GSM BSS
GBSS15.0
AMR Feature Parameter Description
Issue
03
Date
2014-10-27
HUAWEI TECHNOLOGIES CO., LTD.
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All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
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AMR Feature Parameter Description
Contents
Contents
1 About This Document..................................................................................................................1
1.1 Scope..............................................................................................................................................................................1
1.2 Intended Audience..........................................................................................................................................................1
1.3 Change History...............................................................................................................................................................1
2 Overview.........................................................................................................................................5
2.1 Introduction....................................................................................................................................................................5
2.2 NEs Supporting the Feature............................................................................................................................................6
3 Technical Description...................................................................................................................8
3.1 Inband Signaling.............................................................................................................................................................8
3.2 AMR Coding Scheme Adjustment.................................................................................................................................9
3.3 AMR Coding Rate Threshold Adaptive Adjustment...................................................................................................13
3.4 AMR Power Control.....................................................................................................................................................15
3.5 E-Coder.........................................................................................................................................................................15
3.6 AMR Radio Link Timer...............................................................................................................................................16
4 Related Features...........................................................................................................................17
5 Network Impact...........................................................................................................................19
5.1 AMR FR.......................................................................................................................................................................19
5.1.1 System Capacity........................................................................................................................................................19
5.1.2 Network Performance................................................................................................................................................19
5.2 AMR HR.......................................................................................................................................................................19
5.2.1 System Capacity........................................................................................................................................................19
5.2.2 Network Performance................................................................................................................................................19
5.3 AMR Power Control.....................................................................................................................................................19
5.3.1 System Capacity........................................................................................................................................................20
5.3.2 Network Performance................................................................................................................................................20
5.4 AMR Coding Rate Threshold Adaptive Adjustment...................................................................................................20
5.4.1 System Capacity........................................................................................................................................................20
5.4.2 Network Performance................................................................................................................................................20
5.5 AMR Radio Link Timer...............................................................................................................................................20
5.5.1 System Capacity........................................................................................................................................................20
5.5.2 Network Performance................................................................................................................................................20
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AMR Feature Parameter Description
Contents
6 Engineering Guidelines.............................................................................................................22
6.1 When to Use AMR.......................................................................................................................................................22
6.1.1 AMR FR and AMR HR.............................................................................................................................................22
6.1.2 AMR Power Control..................................................................................................................................................22
6.1.3 AMR Coding Rate Threshold Adaptive Adjustment................................................................................................22
6.1.4 AMR Radio Link Timer............................................................................................................................................22
6.2 Required Information...................................................................................................................................................22
6.2.1 AMR FR and AMR HR.............................................................................................................................................23
6.2.2 AMR Power Control..................................................................................................................................................23
6.2.3 AMR Coding Rate Threshold Adaptive Adjustment................................................................................................23
6.2.4 AMR Radio Link Timer............................................................................................................................................23
6.3 Planning........................................................................................................................................................................23
6.3.1 AMR FR and AMR HR.............................................................................................................................................23
6.3.2 AMR Power Control..................................................................................................................................................24
6.3.3 AMR Coding Rate Threshold Adaptive Adjustment................................................................................................24
6.3.4 AMR Radio Link Timer............................................................................................................................................24
6.4 Deploying AMR...........................................................................................................................................................24
6.4.1 Deployment Requirements........................................................................................................................................24
6.4.2 Precautions.................................................................................................................................................................24
6.4.3 Activation..................................................................................................................................................................25
6.4.4 Activation Observation..............................................................................................................................................28
6.4.5 Deactivation...............................................................................................................................................................28
6.5 Deploying AMR Coding Rate Threshold Adaptive Adjustment..................................................................................29
6.5.1 Deployment Requirements........................................................................................................................................29
6.5.2 Activation..................................................................................................................................................................30
6.5.3 Activation Observation..............................................................................................................................................31
6.5.4 Deactivation...............................................................................................................................................................33
6.6 Performance Optimization............................................................................................................................................34
6.6.1 AMR FR and AMR HR.............................................................................................................................................35
6.6.2 AMR Power Control..................................................................................................................................................35
6.6.3 AMR Coding Rate Threshold Adaptive Adjustment................................................................................................35
6.6.4 AMR Radio Link Timer............................................................................................................................................36
7 Parameters.....................................................................................................................................37
8 Counters......................................................................................................................................212
9 Glossary.......................................................................................................................................219
10 Reference Documents.............................................................................................................220
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AMR Feature Parameter Description
1 About This Document
1
About This Document
1.1 Scope
This document describes AMR, including its technical principles, related features, network
impact, and engineering guidelines.
This document covers the following features:
l
GBFD-115501 AMR FR
l
GBFD-115502 AMR HR
l
GBFD-115503 AMR Power Control
l
GBFD-115505 AMR Radio Link Timer
l
GBFD-115506 AMR Coding Rate Threshold Adaptive Adjustment
1.2 Intended Audience
This document is intended for personnel who:
l
Need to understand the features described herein
l
Work with Huawei products
1.3 Change History
This section provides information about the changes in different document versions. There are
two types of changes, which are defined as follows:
l
Feature change
Changes in features of a specific product version
l
Editorial change
Changes in wording or addition of information that was not described in the earlier version
03 (2014-10-27)
This issue includes the following changes.
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AMR Feature Parameter Description
1 About This Document
Change Type
Change Description
Parameter Change
Feature change
None
None
Editorial change
Updated the 3.2 AMR
Coding Scheme
Adjustment.
None
02 (2013-11-15)
This issue includes the following changes.
Issue 03 (2014-10-27)
Change Type
Change Description
Parameter Change
Feature change
None
None
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AMR Feature Parameter Description
1 About This Document
Change Type
Change Description
Parameter Change
Editorial change
Optimized the descriptions in
3.2 AMR Coding Scheme
Adjustment.
Added the following
parameters:
l ACSSETF
(BSC6900,BSC6910)
l ACSSETH
(BSC6900,BSC6910)
l AMRTCHHPRIORALLOW
(BSC6900,BSC6910)
l AMRTCHHPRIORLOA
D(BSC6900,BSC6910)
l DLHYSTF1
(BSC6900,BSC6910)
l DLHYSTF2
(BSC6900,BSC6910)
l DLHYSTF3
(BSC6900,BSC6910)
l DLHYSTH1
(BSC6900,BSC6910)
l DLHYSTH2
(BSC6900,BSC6910)
l DLHYSTH3
(BSC6900,BSC6910)
l DLTHF1
(BSC6900,BSC6910)
l DLTHF2
(BSC6900,BSC6910)
l DLTHF3
(BSC6900,BSC6910)
l DLTHH1
(BSC6900,BSC6910)
l DLTHH2
(BSC6900,BSC6910)
l DLTHH3
(BSC6900,BSC6910)
01 (2013-05-06)
This issue does not include any changes.
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AMR Feature Parameter Description
1 About This Document
Draft A (2013-02-27)
Compared with Issue 03 (2012-11-07) of GBSS14.0, Draft A (2013-02-27) of GBSS15.0
includes the following changes.
Change Type
Change Description
Parameter Change
Feature change
l Added descriptions
about the BSC6910 and
eGBTS. Added2.2 NEs
Supporting the
Feature.
None
l Deleted the
GBFD-115708 Um
Interface Speech Frame
Repairing feature. For
details about this
feature, see the Um
Interface Speech
Frame Repairing
Feature Parameter
Description.
l Deleted the
GBFD-115504 AMR
FR/HR Dynamic
Adjustment Function
feature. For details
about this feature, see
Handover Feature
Parameter Description.
Editorial change
Issue 03 (2014-10-27)
Added 6.4 Deploying
AMRand6.5 Deploying
AMR Coding Rate
Threshold Adaptive
Adjustment.
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AMR Feature Parameter Description
2 Overview
2
Overview
2.1 Introduction
AMR is an adaptive multi-rate voice coding/decoding, which is termed full-rate speech version
3 and half-rate speech version 3 in GSM specifications. AMR enables the BTS and the MS to
automatically select an appropriate coding/decoding rate from the specified ACS according to
the interference level in the radio environment. This enhances the capability and the speech
quality of the wireless communication system.
AMR is classified into AMR FR and AMR HR. AMR specifies eight speech coding rates. Table
2-1 lists the speech coding rates supported by AMR FR and AMR HR. (GBFD-115501 AMR
FR, GBFD-115502 AMR HR)
Table 2-1 AMR speech coding rates
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Coding Rate
AMR FR
AMR HR
4.75 kbit/s
√
√
5.15 kbit/s
√
√
5.90 kbit/s
√
√
6.70 kbit/s
√
√
7.40 kbit/s
√
√
7.95 kbit/s
√
√
10.2 kbit/s
√
×
12.2 kbit/s
√
×
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AMR Feature Parameter Description
2 Overview
Coding Rate
AMR FR
AMR HR
NOTE
l √ indicates that the NE supports this feature. × indicates that the NE does not support this feature.
l When SERVICEMODE(BSC6900,BSC6910) of the BTS is set to IP or HDLC, Huawei BSS supports
the AMR coding rate of 7.95 kbit/s.
l When SERVICEMODE(BSC6900,BSC6910) of the BTS is set to TDM, Huawei BSS does not support
the AMR HR coding rate of 7.95 kbit/s.
As listed in Table 2-1, the coding rates of 12.2 kbit/s and 10.2 kbit/s are supported by only the
AMR FR channel. The other six types of coding rates are supported by both the AMR FR channel
and the AMR HR channel.
Each ACS contains a maximum of four coding schemes. One coding scheme corresponds to one
speech coding rate.
l
For an AMR FR call, the ACS contains a maximum of four speech coding rates of the eight
rates listed in Table 2-1.
l
For an AMR HR call, the ACS contains a maximum of four speech coding rates of the six
rates listed in Table 2-1.
l
When AMR is enabled on the network, the BSC selects an ACS and then a coding scheme
from the ACS during the call establishment or the handover procedure. Meanwhile, the MS
and the BTS continuously measure the receive level, receive quality, and carrier-tointerference ratio (CIR). According to the measurement results, the MS and the BTS
continuously evaluate the interference level in the radio environment. The BTS then adjusts
the speech coding rates of the MS and the BTS according to the evaluated interference level
through the inband signaling.
2.2 NEs Supporting the Feature
Table 2-2 NEs supporting the feature
Issue 03 (2014-10-27)
Feature
BSC6900
BSC6910
GBTS
eGBTS
AMR FR
√
√
√
√
AMR HR
√
√
√
√
AMR Power
Control
√
√
√
√
AMR Radio
Link Timer
√
√
√
√
AMR Coding
Rate Threshold
Adaptive
Adjustment
√
×
√
√
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2 Overview
NOTE
√ indicates that the NE supports this feature. × indicates that the NE does not support this feature.
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AMR Feature Parameter Description
3 Technical Description
3
Technical Description
3.1 Inband Signaling
Inband signaling is a type of signaling through which user data and control information are
transmitted on the same channel. In this document, the inband signaling refers to the AMR
control information such as the CMR and CMI that is transmitted through certain bits in the
header of the transcoder and rate adapter unit (TRAU) frame.
During a call, the MS and the BTS continuously measure the interference level experienced by
the signals and analyze the measurement results. Based on the measurement results, the AMR
control information is then exchanged through the inband signaling to enable the BTS to adjust
the speech coding rate involved in the ongoing speech service.
The AMR control information is transmitted through certain bits in the header of the TRAU
frame. The AMR control information can be classified into the following types:
Downlink Codec Mode Request (DL CMR): The DL CMR occupies two bits in the header of
the TRAU frame. It is used by the MS to send the recommended DL coding scheme to the BTS.
Downlink Codec Mode Indication (DL CMI): The DL CMI occupies two bits in the header of
the TRAU frame. It is used by the BTS to send the current DL coding scheme to the MS.
Uplink Codec Mode Command (UL CMC): The UL CMC occupies two bits in the header of
the TRAU frame. It is used by the BTS to send the UL coding scheme that should be used by
the MS to the MS.
Uplink Codec Mode Indication (UL CMI): The UL CMI occupies two bits in the header of the
TRAU frame. It is used by the MS to send the current UL coding scheme to the BTS.
Uplink Maximum Codec Mode Command (UL Max CMC): The UL Max CMC occupies three
bits in the header of the TRAU frame.
To implement AMR coding scheme adaptation, a Mode Control Entity is used in both the MS
and the BTS, as shown in Figure 3-1.
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3 Technical Description
Figure 3-1 AMR coding scheme adaptation
As shown in Figure 3-1, the AMR coding scheme adaptation procedure is as follows:
l
Uplink direction
– The BTS measures the receive quality of the uplink speech and generates the Uplink
Measurement (UL MEAS).
– The Mode Control Entity of the BTS updates the UL CMC based on the UL MEAS
generated by the BTS.
– The BTS instructs the MS to change the uplink coding scheme through the UL CMC.
– The MS changes the uplink coding scheme as indicated by the UL CMC and then sends
the UL CMI to the BTS to inform the BTS of the new uplink coding scheme.
l
Downlink direction
– The MS measures the receive quality of the downlink speech and generates the
Downlink Measurement (DL MEAS). The Mode Control Entity of the MS converts the
DL MEAS into the recommended downlink coding scheme. Then, the MS sends the
recommended downlink coding scheme to the BTS through the DL CMR.
– The Mode Control Entity of the BTS updates the downlink speech coding scheme based
on the recommended downlink coding scheme sent from the MS.
– The BTS instructs the MS to use the new downlink coding scheme through the DL CMI.
3.2 AMR Coding Scheme Adjustment
AMR coding scheme adjustment is a process in which the AMR coding scheme of a call
frequently changes to adapt to the variations of the interference level in the radio environment.
An ACS is specified by ACSSETF(BSC6900,BSC6910) or ACSSETH(BSC6900,BSC6910) .
If ACSSETF(BSC6900,BSC6910) or ACSSETH(BSC6900,BSC6910) is set to
SINGLEMODE, the ACS is determined by the value of ACTCDSETF(BSC6900,BSC6910)
or ACTCDSETH(BSC6900,BSC6910).
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AMR Feature Parameter Description
3 Technical Description
When an AMR call is set up, the BSC selects an appropriate coding rate according to the
following conditions:
l
If ACSSETF(BSC6900,BSC6910) or ACSSETH(BSC6900,BSC6910) is set to
SINGLEMODE, INITCDMDF(BSC6900,BSC6910) or INITCDMDH
(BSC6900,BSC6910) determines the coding rate to be selected from the ACS specified by
ACTCDSETF(BSC6900,BSC6910) or ACTCDSETH(BSC6900,BSC6910).
l
If the ACS specified by ACSSETF(BSC6900,BSC6910) or ACSSETH
(BSC6900,BSC6910) contains three or fewer coding rates, the lowest coding rate in the
ACS is selected.
l
If the ACS specified by ACSSETF(BSC6900,BSC6910) or ACSSETH
(BSC6900,BSC6910) contains four coding rates, the second lowest coding rate in the ACS
is selected.
Table 3-1 describes the mapping between ACSs and AMR coding rates.
Table 3-1 Mapping between ACSs and AMR coding rates
0
1
2
3
4
5
6
7
8
9
10
12
14
12.2 kbit/s
-
√
-
-
-
-
-
√
-
-
-
-
√
10.2 kbit/s
-
-
-
-
-
-
√
-
-
-
-
√
-
7.95 kbit/s
-
-
-
-
-
√
-
-
-
-
-
-
√
7.4 kbit/s
-
√
-
-
√
-
-
-
-
-
√
-
-
6.7 kbit/s
-
-
-
√
-
-
-
-
-
√
√
√
-
5.9 kbit/s
-
√
√
-
-
-
-
-
√
√
√
√
√
5.15 kbit/s
-
-
-
-
-
-
-
-
-
-
-
-
-
4.75 kbit/s
√
√
-
-
-
-
-
-
√
√
√
√
√
ACS→
AMR
Coding Rate
↓
NOTE
√ indicates that the ACS contains the coding rate.
For AMR HR calls, ACS 1 only consists of 4.75 kbit/s, 5.9 kbit/s, and 7.4 kbit/s.
The RATECTRLSW(BSC6900,BSC6910) parameter specifies whether the AMR coding
scheme is adjusted during an AMR call. The setting of this parameter is described as follows:
l
If this parameter is set to ALG1(Algorithm I), the BSC adjusts the AMR coding scheme
based on the carrier-to-interference ratio (CIR).
l
If this parameter is set to ALG2(Algorithm II), the BSC adjusts the AMR coding scheme
based on the bit error rate (BER). Due to the algorithm's immaturity, inappropriate AMR
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AMR Feature Parameter Description
3 Technical Description
coding scheme adjustment will impair voice quality of AMR calls. Therefore, this algorithm
is not recommended.
l
If this parameter is set to NONE(None), the AMR coding scheme adjustment is disabled.
If the RATECTRLSW(BSC6900,BSC6910) parameter is set to ALG1(Algorithm I), the
AMRRATEADJOPTALG(BSC6900,BSC6910) parameter can be used to determine whether to
use the AMR coding scheme adjustment optimization algorithm. This algorithm provides
optimized CIR estimation, improves accuracy of CIR estimation in different interference
scenarios and of coding scheme usage, and further improves speech performance. The
AMRRATEADJOPTALG(BSC6900,BSC6910) parameter has two values:
l
EACH(Each Interference): The algorithm that applies to scenarios with various
interference is used.
l
MEAN(Mean Interference): The algorithm that applies to scenarios with evenly
distributed interference is used
If the RATECTRLSW(BSC6900,BSC6910) parameter is set to ALG1(Algorithm I) or ALG2
(Algorithm II), the AMR coding scheme adapts to the change of the radio environment during
a call according to the configured threshold and hysteresis.
NOTE
Each AMR coding scheme has an adjustment threshold (THR), which is used to select the coding scheme
that best suits to the CIR or BER of the interference level in the radio environment. To avoid constant
changes of the coding scheme, the hysteresis (HYST) is introduced. The value of THR ranges from 0 to
63. Value 1 indicates 0.5 dB, and value 2 indicates 1 dB. The rest may be deduced by analogy. The value
of HYST ranges from 0 to 15. The HYST value complements the THR. For an ACS, a maximum of three
THRs and three HYSTs are available.
Figure 3-2 shows the principle of AMR coding scheme adjustment.
Figure 3-2 Principle of AMR coding scheme adjustment
THR_N: AMR Coding Rate adj.thN (1 ≤ N
≤ 3).
Issue 03 (2014-10-27)
HYST_N: AMR Coding Rate adj.hystN (1
≤ N ≤ 3).
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3 Technical Description
CODEC_MODE_1: indicates the lowest-bit- CODEC_MODE_2: indicates the coding
rate coding scheme.
scheme whose bit rate is the second highest in
the ACS (assume that there is more than one
coding scheme in the ACS).
CODEC_MODE_3: indicates the coding
scheme whose bit rate is the second highest in
the ACS (assume that there are more than two
coding schemes in the ACS)
CODEC_MODE_4: indicates the coding
scheme whose bit rate is the highest in the
ACS (assume that there are four coding
schemes in the ACS)
Figure 3-3 shows how the BTS adjusts the AMR uplink coding scheme when RATECTRLSW
(BSC6900,BSC6910) is set to ALG1(Algorithm I).
Figure 3-3 Procedure for AMR coding scheme adjustment
ULTHF1: AMR UL Coding Rate adj.th1[F]
ULHYSTF1: AMR UL Coding Rate
adj.hyst1[F]
ULTHF2: AMR UL Coding Rate adj.th2[F]
ULHYSTF2: AMR UL Coding Rate
adj.hyst2[F]
ULTHF3: AMR UL Coding Rate adj.th3[F]
ULHYSTF3: AMR UL Coding Rate
adj.hyst3[F]
As shown in Figure 3-3, assume that coding scheme CODEC_MODE_3 is used:
l
Issue 03 (2014-10-27)
If the CIR is greater than the result of ULTHF3(BSC6900,BSC6910) plus ULHYSTF3
(BSC6900,BSC6910), the MS needs to adjust the coding scheme to CODEC_MODE_4.
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l
If the CIR is less than the value of ULTHF2(BSC6900,BSC6910), the MS needs to adjust
the coding scheme to CODEC_MODE_2.
l
In other cases, the coding scheme remains unchanged.
The same rules apply when another coding scheme is used:
l
Assume that coding scheme CODEC_MODE_1 is used:
– If the CIR is greater than the result of ULTHF1(BSC6900,BSC6910) plus ULHYSTF1
(BSC6900,BSC6910), the MS needs to adjust the coding scheme to CODEC_MODE_2.
– In other cases, the coding scheme remains unchanged.
l
Assume that coding scheme CODEC_MODE_2 is used:
– If the CIR is greater than the result of ULTHF2(BSC6900,BSC6910) plus ULHYSTF2
(BSC6900,BSC6910), the MS needs to adjust the coding scheme to CODEC_MODE_3.
– If the CIR is less than the value of ULTHF1(BSC6900,BSC6910), the MS needs to
adjust the coding scheme to CODEC_MODE_1.
– In other cases, the coding scheme remains unchanged.
l
Assume that coding scheme CODEC_MODE_4 is used:
– If the CIR is less than the value of ULTHF3(BSC6900,BSC6910), the MS needs to
adjust the coding scheme to CODEC_MODE_3.
l
In other cases, the coding scheme remains unchanged.
If the coding scheme is to be adjusted, the BTS sends a UL CMC to the MS. The procedure
for adjusting the uplink coding scheme by the BTS is complete.
The AMR HR calls use the same uplink coding scheme adjustment policy as that used by the
AMR FR calls; however, they use different parameters. The uplink AMR HR coding scheme
involves the following parameters: ULTHH1(BSC6900,BSC6910), ULTHH2
(BSC6900,BSC6910), ULTHH3(BSC6900,BSC6910), ULHYSTH1(BSC6900,BSC6910),
ULHYSTH2(BSC6900,BSC6910), and ULHYSTH3(BSC6900,BSC6910).
The downlink AMR coding scheme adjustment policy is similar to the uplink AMR coding
scheme adjustment policy. The only difference is that they use different parameters.
The downlink AMR FR coding scheme involves the following parameters: DLTHF1
(BSC6900,BSC6910), DLTHF2(BSC6900,BSC6910), DLTHF3(BSC6900,BSC6910),
DLHYSTF1(BSC6900,BSC6910), DLHYSTF2(BSC6900,BSC6910), and DLHYSTF3
(BSC6900,BSC6910).
The downlink AMR HR coding scheme involves the following parameters: DLTHH1
(BSC6900,BSC6910), DLTHH2(BSC6900,BSC6910), DLTHH3(BSC6900,BSC6910),
DLHYSTH1(BSC6900,BSC6910), DLHYSTH2(BSC6900,BSC6910), and DLHYSTH3
(BSC6900,BSC6910).
3.3 AMR Coding Rate Threshold Adaptive Adjustment
Generally, network planning engineers set the ACS, threshold parameters, and hysteresis
parameters for a cell according to the evaluation of the radio channel quality. When the radio
channel quality keeps changing or the quality evaluation is inaccurate, the parameter settings do
not meet the requirements of the speech services in the cell. In this case, the appropriate AMR
coding scheme cannot be selected for a call, and the quality of the speech services is affected.
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AMR Feature Parameter Description
3 Technical Description
The AMR Coding Rate Threshold Adaptive Adjustment feature is introduced for the MS and
BTS to monitor the uplink and downlink speech quality respectively in real time and to set uplink
and downlink target speech quality using the LTFERTGT or DLLTFERTGT parameters,
respectively. When the speech quality over the current radio channel keeps changing or the
quality evaluation is inaccurate, the BSC compares the current speech quality with the target
speech quality to determine whether the threshold is proper. This enables the BSC to adaptively
adjust the threshold and select an appropriate AMR coding scheme for the call, as shown in
Figure 3-4. (GBFD-115506 AMR Coding Rate Threshold Adaptive Adjustment)
Figure 3-4 Adaptive threshold adjustment
The AMR Coding Rate Threshold Adaptive Adjustment feature supports the adaptive
adjustment of the uplink AMR coding rate threshold and that of the downlink AMR coding rate
threshold, both of which have the same working principles.
The AMRUADTHAW parameter specifies whether the adaptive adjustment of the uplink AMR
coding rate threshold is enabled. The LTFERTGT parameter specifies the uplink target speech
quality and must be set to a value larger than that of LTFERLOWTH but smaller than that of
LTFERUPTH. The LTTHADJFA parameter specifies the coefficient or frequency for the
uplink threshold adjustment. A larger value of LTTHADJFA indicates a more frequent threshold
adjustment, but its value does not affect the threshold setting.
The AMRDADTHAW parameter specifies whether the adaptive adjustment of the downlink
AMR coding rate threshold is enabled. The DLLTFERTGT parameter specifies the downlink
target speech quality and must be set to a value larger than that of DLLTFERLOWTH but smaller
than that of DLLTFERUPTH. The DLLTTHADJFA parameter specifies the coefficient or
frequency for the downlink threshold adjustment. A larger value of DLLTTHADJFA indicates
a more frequent threshold adjustment, but its value does not affect the threshold setting.
The AMR Coding Rate Threshold Adaptive Adjustment feature brings the following benefits:
l
AMR speech calls can select a proper coding rate.
l
Speech quality is improved in the AMR speech calls.
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3 Technical Description
3.4 AMR Power Control
The procedure of power control for AMR calls is similar to that for non-AMR calls.
(GBFD-115503 AMR Power Control)
In Huawei II power control algorithm and Huawei III power control algorithm, parameters
related to AMR power control are configured separately from those related to non-AMR power
control. The AMR calls and non-AMR calls can adopt different power control strategies. For
details, see Power Control Feature Parameter Description. The following lists the parameters
related to AMR power control.
l
AMRPCADJPERIOD(BSC6900,BSC6910)
l
AMRULLEVFTLEN(BSC6900,BSC6910)
l
AMRDLLEVFTLEN(BSC6900,BSC6910)
l
AMRULQUAFTLEN(BSC6900,BSC6910)
l
AMRDLQUAFTLEN(BSC6900,BSC6910)
l
AMRMRCOMPREG(BSC6900,BSC6910)
l
AMRULPREDLEND(BSC6900,BSC6910)
l
AMRDLPREDLEND(BSC6900,BSC6910)
l
AMRULSSHTHRED(BSC6900,BSC6910)
l
AMRULSSLTHRED(BSC6900,BSC6910)
l
AMRULQHTHRED(BSC6900,BSC6910)
l
AMRULQLOWTHRED(BSC6900,BSC6910)
l
AMRDLSSHTHRED(BSC6900,BSC6910)
l
AMRDLSSLTHRED(BSC6900,BSC6910)
l
AMRDLQHTHRED(BSC6900,BSC6910)
l
AMRDLQLTHRED(BSC6900,BSC6910)
l
AMRMAXSTEP0(BSC6900,BSC6910)
l
AMRMAXSTEP1(BSC6900,BSC6910)
l
AMRMAXSTEP2(BSC6900,BSC6910)
l
AMRQUALSTEP(BSC6900,BSC6910)
l
AMRMAXVALADJRX(BSC6900,BSC6910)
l
AMRMAXADJPCVAL(BSC6900,BSC6910)
l
AMRULQUALBADTRIG(BSC6900,BSC6910)
l
AMRULQUALBADUPLEV(BSC6900,BSC6910)
l
AMRDLQUALBADTRIG(BSC6900,BSC6910)
l
AMRDLQUALBADUPLEV(BSC6900,BSC6910)
l
AMRBTSPWRNUM(BSC6900,BSC6910)
3.5 E-Coder
Enhanced Coding (E-Coder) optimizes AMR coding modules, therefore improving AMR voice
quality. The emulation results show that E-Coder improves the MOS by 0.05 to 0.12. E-Coder
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AMR Feature Parameter Description
3 Technical Description
is not supported when A over IP and TFO are enabled on the BSC 6900 or the BSC6910 is used.
E-Coder is supported only in the downlink.
To enable the E-Coder function, set EncodeMode to ECODEC(Enhanced code mode).
3.6 AMR Radio Link Timer
AMR calls have stronger robustness than common calls. Therefore, AMR calls maintain good
voice quality at a low rate even if common calls drop due to poor radio link quality. Setting the
radio link timer for AMR calls to the same value as that for common calls will cause unexpected
AMR call drops. This deteriorates user experience.
The Huawei BSC allows users to set radio link timers for AMR calls and common calls
separately. The radio link timers for AMR calls are classified into AMR FR and AMR HR radio
link timers. Setting the radio link timer for AMR calls longer than that for common calls ensures
that AMR calls are maintained for a long time in a poor radio environment. This reduces the call
drop rate.
l
The AMR FR radio link timer is determined by the AFRDSBLCNT
(BSC6900,BSC6910) and AFRSAMULFRM(BSC6900,BSC6910) parameters.
l
The AMR HR radio link timer is determined by theAHRDSBLCNT
(BSC6900,BSC6910) and AHRSAMULFRM(BSC6900,BSC6910) parameters.
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AMR Feature Parameter Description
4 Related Features
4
Related Features
Table 4-1 Related features
Feature
Prerequisite
Feature
Mutually
Exclusive Feature
Impacted Feature
AMR FR
None
None
GBFD-115503
AMR Power Control
NOTE
You are advised to
enable GBFD-115503
AMR Power Control
when this feature is
enabled.
AMR HR
None
None
GBFD-115503
AMR Power Control
NOTE
You are advised to
enable GBFD-115503
AMR Power Control
when this feature is
enabled.
AMR Power Control
GBFD-115501
AMR FR
None
GBFD-115502
AMR HR
GBFD-115501
AMR FR or
GBFD-115502
AMR HR
NOTE
You are advised to
enable this feature
when GBFD-115501
AMR FR or
GBFD-115502 AMR
HR is enabled.
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AMR Feature Parameter Description
4 Related Features
Feature
Prerequisite
Feature
Mutually
Exclusive Feature
Impacted Feature
AMR Coding Rate
Threshold Adaptive
Adjustment
l GBFD-115501
AMR FR,
GBFD-115502
AMR HR, or
GBFD-115507
WB AMR.
l GBFD-118602 A
over IP
None
l For the adaptive
adjustment of the
downlink AMR
coding rate
threshold:
GBFD-117501
Enhanced
Measurement
Report (EMR) in
addition to the
preceding
features.
l GBFD-118622 A
IP over E1/T1
l GBFD-150201 A
over IP Based on
Dynamic Load
Balancing
NOTE
This feature applies
only when the A
interface uses TDM
transmission.
This feature takes
effect only if none of
the following features
successfully apply to a
call.
l GBFD-115701
TFO
l GBFD-117702
BTS Local
Switch
l GBFD-117701
BSC Local
Switch
AMR Radio Link
Timer
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None
None
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AMR Feature Parameter Description
5 Network Impact
5
Network Impact
5.1 AMR FR
5.1.1 System Capacity
The AMR FR feature provides a strong anti-interference capability to calls. This allows tight
frequency reuse and increases system capacity.
With this feature, calls in some weak coverage areas can be maintained. This reduces the
possibility of active hang-ups, increasing the traffic volume.
5.1.2 Network Performance
The voice quality of 12.2 kbit/s AMR FR calls is equivalent to that of EFR calls and is better
than that of FR calls. In areas with weak signals, the voice quality of low-rate AMR FR calls is
much better than that of EFR and FR calls because of strong robustness of AMR FR calls.
5.2 AMR HR
5.2.1 System Capacity
When network capacity is limited, the AMR HR feature increases system capacity and reduces
the network congestion rate while maintaining acceptable voice quality.
5.2.2 Network Performance
The voice quality of 7.4 kbit/s AMR HR calls is better than that of HR calls. In weak coverage
areas, the voice quality of low-rate AMR HR calls is much better than that of HR calls because
of strong robustness of AMR HR calls.
5.3 AMR Power Control
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AMR Feature Parameter Description
5 Network Impact
5.3.1 System Capacity
The AMR Power Control feature improves the anti-interference capability. This allows tight
frequency reuse and increases system capacity.
5.3.2 Network Performance
AMR optimizes the speech codec but not the signaling codec. Therefore, AMR slightly affects
the handover success rate theoretically. AMR can expand the radio network coverage. Therefore,
MSs can make calls even if they are located in weak coverage areas. However, the receive quality
in measurement reports (MRs) is poor, leading to bad quality handovers. When AMR is enabled,
the number of bad quality handovers may increase. When the AMR Power Control feature is
enabled, network interference decreases, and the number of handovers due to interference
decreases.
This feature enhances the anti-interference capability for AMR calls, improving voice quality
experience of subscribers in weak coverage areas.
5.4 AMR Coding Rate Threshold Adaptive Adjustment
5.4.1 System Capacity
None
5.4.2 Network Performance
The AMR Coding Rate Threshold Adaptive Adjustment feature makes AMR coding rate
adjustment thresholds and hysteresis more adaptive to the Um interface quality, improving the
voice quality.
5.5 AMR Radio Link Timer
5.5.1 System Capacity
None
5.5.2 Network Performance
AMR FR improves the robustness of AMR FR speech frames but not the robustness of SACCH
signaling frames. Therefore, AMR FR does not affect the TCH call drop rate theoretically. In
practice, however, when AMR FR is enabled, the TCH call drop rate increases because of the
following causes:
l
For EFR, FR, or HR calls, SACCH signaling frames have the similar robustness to that of
speech frames. Therefore, a subscriber in a weak coverage area may hang up the phone
because of poor conversation quality. Such a hang-up is not counted as a call drop. However,
such a hang-up for an AMR call is counted as a call drop.
l
When AMR FR is enabled, the robustness of AMR FR speech frames is stronger than that
of SACCH signaling frames. Therefore, speech frames area can be correctly decoded in a
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AMR Feature Parameter Description
5 Network Impact
weak coverage, and therefore subscribers will not hang up the phone. SACCH frames,
however, cannot be correctly decoded. Therefore, RLT(BSC6900,BSC6910) expires, and
call drops occur, leading to an increase in the TCH call drop rate.
AMR FR and AMR HR incorporate the following parameters: AFRDSBLCNT
(BSC6900,BSC6910), AHRDSBLCNT(BSC6900,BSC6910), AFRSAMULFRM
(BSC6900,BSC6910), and AHRSAMULFRM(BSC6900,BSC6910). By modifying the settings
of these parameters, you can improve the robustness of SACCH signaling frames and enhance
network coverage performance using AMR to decrease the TCH call drop rate.
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AMR Feature Parameter Description
6 Engineering Guidelines
6
Engineering Guidelines
6.1 When to Use AMR
6.1.1 AMR FR and AMR HR
It is recommended that the AMR FR or AMR HR feature be used in the following scenarios:
l
Capacity-sufficient scenarios: If the number of AMR calls reaches a certain proportion,
enable AMR FR or AMR HR in some cells to improve voice quality and user experience.
l
Capacity-limited scenarios: Based on the strong anti-interference capability of AMR, tight
frequency reuse can be used. Based on the similarity of voice quality between AMR FR
used with AMR HR and AMR FR, some HR channels can be used to improve the network
capacity while maintaining network quality.
6.1.2 AMR Power Control
It is recommended that the AMR Power Control feature be used with AMR FR or AMR HR.
This enhances anti-interference capability, increases network capacity, and improves voice
quality.
6.1.3 AMR Coding Rate Threshold Adaptive Adjustment
It is recommended that the AMR Coding Rate Threshold Adaptive Adjustment feature be used
when radio link quality varies frequently or network planning personnel are difficult to predict
radio quality. With this feature, the BTS adaptively adjusts AMR coding rate thresholds to ensure
AMR performance.
6.1.4 AMR Radio Link Timer
It is recommended that the AMR Radio Link Timer feature be used with AMR FR or AMR HR.
This decreases the call drop rate and improves user experience.
6.2 Required Information
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6 Engineering Guidelines
6.2.1 AMR FR and AMR HR
Before deploying the AMR FR or AMR HR feature, collect the following information: AMRcapable MS penetration rate and Um-interface coverage quality. For AMR HR deployment, you
also need to learn about the network load. If the network is congested, you are advised to enable
AMR HR.
6.2.2 AMR Power Control
None
6.2.3 AMR Coding Rate Threshold Adaptive Adjustment
Before deploying the AMR Coding Rate Threshold Adaptive Adjustment feature, analyze
network interference and determine AMR coding rate adjustment thresholds. This feature
supports the adaptive adjustment of uplink and downlink AMR coding rate thresholds. The
adaptive adjustment of downlink AMR coding rate threshold depends on the Enhanced
Measurement Report (EMR) feature. Before enabling adaptive adjustment of downlink AMR
coding rate threshold, collect the EMR-capable MS penetration rate.
6.2.4 AMR Radio Link Timer
Before deploying the AMR Radio Link Timer feature, collect the AMR FR or AMR HR call
drop rate.
6.3 Planning
6.3.1 AMR FR and AMR HR
RF Planning
According to the impact of AMR on network capacity and quality, RF planning for AMR is as
follows: Compared with FR and EFR, AMR supports a lower CIR with the same voice quality.
In addition, AMR improves network performance in a tight frequency reuse pattern. Therefore,
you can configure some channels on a TRX as AMR HR channels with the same network
frequency planning so that these AMR HR channels are allocated to AMR calls. This increases
system capacity.
Certain MSs do not support AMR. Therefore, you must appropriately plan the network capacity
based on the AMR-capable MS penetration rate and select a proper frequency reuse pattern for
frequency planning. If you perform network planning without considering the MSs that do not
support AMR, the overall network KPIs deteriorate.
Network Planning
N/A
Hardware Planning
N/A
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AMR Feature Parameter Description
6 Engineering Guidelines
6.3.2 AMR Power Control
N/A
6.3.3 AMR Coding Rate Threshold Adaptive Adjustment
N/A
6.3.4 AMR Radio Link Timer
N/A
6.4 Deploying AMR
This section describes how to activate, verify, and deactivate the following optional features:
l
GBFD-115501 AMR FR
l
GBFD-115502 AMR HR
l
GBFD-115503 AMR Power Control
l
GBFD-115505 AMR Radio Link Timer
6.4.1 Deployment Requirements
Table 6-1 Deployment requirements
Aspect
Requirement
Related features
See 4 Related Features.
BSC
None
BTS
The BTS supports AMR speech codecs.
GSM networking
None
MS
MSs support AMR speech codecs.
MSC
The MSC supports AMR speech codecs.
License
The license controlling this feature has been activated. For
details on how to activate the license, see License
Management Feature Parameter Description. For details
about license items, see License Control Item Description.
Others
None
6.4.2 Precautions
l
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The BSC6900 supports the 7.95 kbit/s coding scheme for AMR HR calls only when Service
Type of the Abis interface is IP or HDLC in BM/TC combined mode or A over IP mode.
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6 Engineering Guidelines
The BSC6910 supports the 7.95 kbit/s coding scheme for AMR HR calls only when Service
Type of the Abis interface is IP in A over IP mode.
l
If a BTS supports AMR but its software version does not, configuring AMR fails. In this
case, a BTS software version that supports AMR must be obtained.
6.4.3 Activation
Using MML Commands
On the BSC LMT, perform the following steps:
Step 1 Configure basic AMR parameters.
1.
Run the SET BSCBASIC command with A Interface Tag set to GSM_PHASE_2Plus.
2.
Run the SET GCELLCCACCESS command. In this step, select FULL_RATE_VER1
(Full-rate VER 1) and FULL_RATE_VER3(Full-rate VER 3) under the Speech
Version parameter.
NOTE
For cells that support the half-rate speech codec, you also need to select HALF_RATE_VER3(Half-rate
VER 3) under the Speech Version parameter.
Table 6-2 lists the mapping between codec and speech versions. In the speech versions,
HALF_RATE_VER2(Half-rate VER 2) is reserved and is unavailable to any service.
Table 6-2 Mapping between codec and speech versions
codec
speech version
FR
FULL_RATE_VER1(Full-rate VER 1)
EFR
FULL_RATE_VER2(Full-rate VER 2)
AMR FR
FULL_RATE_VER3(Full-rate VER 3)
AMR WB
FULL_RATE_VER5(Full-rate VER 5)
HR
HALF_RATE_VER1(Half-rate VER 1)
N/A
HALF_RATE_VER2(Half-rate VER 2)
AMR HR
HALF_RATE_VER3(Half-rate VER 3)
Step 2 Configure AMR call processing parameters.
1.
Run the SET GCELLCCBASIC command with AFR SACCH Multi-Frames and AFR
Radio Link Timeout set to appropriate values based on actual conditions.
NOTE
For cells that support half-rate speech versions, you also need to set AHR SACCH Multi-Frames
and AHR Radio Link Timeout to appropriate values.
2.
Issue 03 (2014-10-27)
(Optional) Run the SET GCELLCCAMR command with control parameters for both
AMR FR and AMR HR calls set to appropriate values based on actual conditions.
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6 Engineering Guidelines
NOTE
l AMR ACS[F] takes effect only when AMR ACS Collection (Full Rate) is set to SINGLEMODE.
l AMR ACS[H] takes effect only when AMR ACS Collection (Half Rate) is set to
SINGLEMODE.
l AMR ACS[F] and AMR ACS[H] can contain only one to four types of coding rates, respectively. In
A over IP mode, it is recommended that AMR ACS[F] and AMR ACS[H] settings be consistent with
those on the core network (CN).
l Set AMR Rate Control Switch to enable the BSC to select an appropriate algorithm.
Step 3 (Optional) Configure AMR power control parameters for a cell.
l When Huawei II power control algorithm is used, run the SET GCELLPWR2 command
with AMR power control parameters including AMR PC Interval set to appropriate values.
l When Huawei III power control algorithm is used, run the SET GCELLPWR3 command
with Allow III Power Control For AMR set to ON(Allowed) and AMR control parameters
set to appropriate values based on actual conditions.
Step 4 Configure AMR channel management parameters.
Run the SET GCELLCHMGAD command with AMR TCH/H Prior Allowed and AMR
TCH/H Prior Cell Load Threshold set to appropriate values.
----End
MML Command Examples
SET BSCBASIC: AVer=GSM_PHASE_2Plus;
SET GCELLCCACCESS: IDTYPE=BYID, CELLID=0,
VOICEVER=FULL_RATE_VER1-1&FULL_RATE_VER2-0&FULL_RATE_VER3-1&HA
LF_RATE_VER1-0&HALF_RATE_VER2-0&HALF_RATE_VER3-0&FULL_RATE_VER
5-0;
SET GCELLCCBASIC: IDTYPE=BYID, CELLID=0, AFRSAMULFRM=48,
AHRSAMULFRM=32, AFRDSBLCNT=64_Times, AHRDSBLCNT=52_Times;
SET GCELLCCAMR: IDTYPE=BYID, CELLID=0, RATECTRLSW=ALG1, ACSSETF=
SET1-1, ACSSETH= SET1-1;;
SET GCELLPWR2: IDTYPE=BYID, CELLID=0, AMRPCADJPERIOD=3;
SET GCELLPWR3: IDTYPE=BYID, CELLID=0, AMRCALLPCALLOWED=ON;
SET GCELLCHMGAD: IDTYPE=BYID, CELLID=0, AMRTCHHPRIORALLOW=ON,
AMRTCHHPRIORLOAD=55;
Using the CME
NOTE
When configuring the AMR feature on the CME, you must perform a single configuration first, and then
perform batch modifications if required.
You must perform a single configuration for a parameter before batch modifications of the parameter. You
are advised to perform batch modifications before logging out of the parameter setting interface.
Step 1 Configure a single object on the CME. (CME single configuration)
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Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-3. For the method of performing the CME single configuration, see CME
Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BTSs, GSM cells, TRXs, BSCs, and external GSM cells, in batches,
click the
icon on the CME configuration interface to start the batch modification wizard. For
the method of performing batch modifications through the CME batch modification center, press
F1 on the wizard interface to obtain online help.
----End
Table 6-3 Configuring parameters on the CME
SN
Managed Object
(MO)
NE
Parameter
Name
Paramete
r ID
Configurabl
e in CME
Batch
Modification
Center
1
BSCBASIC
BSC690
0/
BSC691
0
Abis Interface
Tag
Aver
Yes
2
GCELLCCACCESS
BSC690
0/
BSC691
0
Speech Version
VOICEVE
R
Yes
3
GCELLCCBASIC
BSC690
0/
BSC691
0
AFR Radio
Link Timeout
AFRDSBL
CNT
Yes
AFR SACCH
Multi-Frames
AFRSAM
ULFRM
AHR Radio
Link Timeout
AHRDSB
LCNT
AHR SACCH
Multi-Frames
AHRSAM
ULFRM
AMR Rate
Control Switch
RATECT
RLSW
AMR ACS
Collection (Full
Rate)
ACSSETF
AMR ACS
Collection (Half
Rate)
ACSSETH
(Optio
nal) 4
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GCELLCCAMR
BSC690
0/
BSC691
0
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AMR Feature Parameter Description
6 Engineering Guidelines
SN
Managed Object
(MO)
NE
Parameter
Name
Paramete
r ID
Configurabl
e in CME
Batch
Modification
Center
(Optio
nal) 5
GCELLPWR2
BSC690
0/
BSC691
0
AMR PC
Interval
AMRPCA
DJPERIO
D
Yes
BSC690
0/
BSC691
0
Allow III Power
Control For
AMR
AMRCAL
LPCALLO
WED
Yes
BSC690
0/
BSC691
0
AMR TCH/H
Prior Allowed
AMRTCH
HPRIORA
LLOW
Yes
AMR TCH/H
Prior Cell Load
Threshold
AMRTCH
HPRIORL
OAD
NOTE
Configure this MO
when Huawei II power
control algorithm is
used.
GCELLPWR3
NOTE
Configure this MO
when Huawei III
power control
algorithm is used.
6
GCELLCHMGAD
6.4.4 Activation Observation
Step 1 Make a call.
Step 2 On the BSC LMT, run the DSP CALLRES command.
Expected result: The value of Speech version is Full-rate VER 3.
----End
6.4.5 Deactivation
Using MML Commands
On the BSC LMT, run the SET GCELLCCACCESS command. In this step, deselect
FULL_RATE_VER3(Full-rate VER 3) and Half_RATE_VER3(Half-rate VER 3) under
the Speech Version parameter.
MML Command Examples
SET GCELLCCACCESS: IDTYPE=BYID, CELLID=0,
VOICEVER=FULL_RATE_VER1-1&FULL_RATE_VER2-0&FULL_RATE_VER3-0&HA
LF_RATE_VER1-0&HALF_RATE_VER2-0&HALF_RATE_VER3-0&FULL_RATE_VER
5-0;
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Using the CME
NOTE
When configuring the AMR feature on the CME, you must perform a single configuration first, and then
perform batch modifications if required.
You must perform a single configuration for a parameter before batch modifications of the parameter. You
are advised to perform batch modifications before logging out of the parameter setting interface.
Step 1 Configure a single object on the CME. (CME single configuration)
Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-4. For the method of performing the CME single configuration, see CME
Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BTSs, GSM cells, TRXs, BSCs, and external GSM cells, in batches,
icon on the CME configuration interface to start the batch modification wizard. For
click the
the method of performing batch modifications through the CME batch modification center, press
F1 on the wizard interface to obtain online help.
----End
Table 6-4 Configuring the parameter on the CME
SN
MO
NE
Parameter
Name
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
1
GCELLCC
ACCESS
BSC6900/
BSC6910
Speech
Version
VOICEVER
Support
6.5 Deploying AMR Coding Rate Threshold Adaptive
Adjustment
6.5.1 Deployment Requirements
Table 6-5 Deployment requirements
Issue 03 (2014-10-27)
Aspect
Requirement
Related features
See chapter "4 Related Features."
BSC
None
BTS
BTS3006C, BTS3002E, BTS3012, and BTS3012AE do not support this
feature when they use non-optimized DTRUs.
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AMR Feature Parameter Description
6 Engineering Guidelines
Aspect
Requirement
GSM networking
The A interface uses TDM transmission.
MS
None
MSC
None
License
The license controlling this feature has been activated. For details on
how to activate the license, see License Management Feature
Parameter Description. For details about license items, see License
Control Item Description.
Others
The MOS test instrument and the drive test (DT) vehicle are available.
Neighboring cells have been configured for the cell to be tested.
6.5.2 Activation
Using MML Commands
l
Activate the adaptive adjustment of uplink AMR coding rate threshold.
On the BSC6900 LMT, run the SET GCELLCCAMR command with AMR Uplink
Adaptive Threshold Allowed set to YES(Yes).
l
Activate the adaptive adjustment of downlink AMR coding rate threshold.
On the BSC6900 LMT, perform the following steps:
Step 1 Run the SET GCELLCCAMR command with AMR Downlink Adaptive Threshold Allowed
set to YES(Yes) and Is RATSCCH Function Enabled to ENABLE(Enable).
Step 2 Run the SET GCELLCCUTRANSYS command with Measurement Report Type set to
EnhMeasReport(Enhanced Measurement Report).
----End
MML Command Examples
//Activating the adaptive adjustment of uplink AMR coding rate threshold
SET GCELLCCAMR: IDTYPE=BYID, CELLID=0, AMRUADTHAW=YES; //Activating the
adaptive adjustment of downlink AMR coding rate threshold.
SET GCELLCCAMR: IDTYPE=BYID, CELLID=0, AMRDADTHAW=YES;
Using the CME
NOTE
When configuring the AMR Coding Rate Threshold Adaptive Adjustment feature on the CME, you must
perform a single configuration first, and then perform batch modifications if required.
You must perform a single configuration for a parameter before batch modifications of the parameter. You
are advised to perform batch modifications before logging out of the parameter setting interface.
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AMR Feature Parameter Description
6 Engineering Guidelines
Step 1 Configure a single object on the CME. (CME single configuration)
Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-6. For the method of performing the CME single configuration, see CME
Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BTSs, GSM cells, TRXs, BSCs, and external GSM cells, in batches,
click the
icon on the CME configuration interface to start the batch modification wizard. For
the method of performing batch modifications through the CME batch modification center, press
F1 on the wizard interface to obtain online help.
----End
Table 6-6 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
Parameter
ID
1
GCELLCC
AMR
BSC6900
AMR Uplink AMRUADT
Adaptive
HAW
Threshold
Allowed
AMR
Downlink
Adaptive
Threshold
Allowed
AMRDADT
HAW
Is
RATSCCH
Function
Enabled
RATSCCHE
NABLED
Configura
ble in CME
Batch
Modificati
on Center
YES
6.5.3 Activation Observation
l
Verify the adaptive adjustment of uplink AMR coding rate threshold.
Select a BTS that provides continuous coverage for a test cell. In the test cell coverage area,
select a test path where the uplink level ranges from -50 dBm to -110 dBm and is evenly
distributed.
Step 1 On the BSC6900 LMT, run the SET GCELLCCACCESS command. In this step, select
FULL_RATE_VER1(Full-rate VER 1), FULL_RATE_VER3(Full-rate VER 3), and
HALF_RATE_VER3(Half-rate VER 3) under the Speech Version parameter.
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6 Engineering Guidelines
Step 2 Run the SET GCELLCCAMR command with AMR Uplink Adaptive Threshold Allowed
set to YES(Yes).
Step 3 Connect the MOS test instrument to the test MS, use the test MS to make a call, and perform
the DT on the predefined test path.
NOTE
The recommended test scheme is as follows:
l Set the test distance to 1 km to 2 km.
l Set the moving speed of the DT vehicle to 20 km/h.
l Perform the DT three times (three come-and-goes).
l Record the MOSs and calculate the average MOS.
Step 4 On the BSC6900 LMT, run the SET GCELLCCAMR command with AMR Uplink Adaptive
Threshold Allowed set to NO(No).
Step 5 Repeat Step3.
Step 6 Compared the data recorded in Step3 and Step5 to find the difference in the speech quality when
AMR Uplink Adaptive Threshold Allowed is set to YES(Yes) and when it is set to NO
(No).
Expected result: The MOS when AMR Uplink Adaptive Threshold Allowed is set to YES
(Yes) is higher than the MOS when AMR Uplink Adaptive Threshold Allowed is set to NO
(No).
----End
l
Verify the adaptive adjustment of downlink AMR coding rate threshold.
Select a BTS that provides continuous coverage for a test cell. In the test cell coverage area,
select a test path where the downlink level ranges from -50 dBm to -110 dBm and is evenly
distributed.
Step 1 On the BSC6900 LMT, run the SET GCELLCCACCESS command. In this step, select
FULL_RATE_VER1(Full-rate VER 1), FULL_RATE_VER3(Full-rate VER 3), and
HALF_RATE_VER3(Half-rate VER 3) under the Speech Version parameter.
Step 2 Run the SET GCELLCCAMR command with AMR Downlink Adaptive Threshold
Allowed set to YES(Yes).
Step 3 Connect the MOS test instrument to the test MS, use the test MS to make a call, and perform
the DT on the predefined test path.
NOTE
The recommended test scheme is as follows:
l Set the test distance to 1 km to 2 km.
l Set the moving speed of the DT vehicle to 20 km/h.
l Perform the DT three times (three come-and-goes).
l Record the MOSs and calculate the average MOS.
Step 4 On the BSC6900 LMT, run the SET GCELLCCAMR command with AMR Downlink
Adaptive Threshold Allowed set to NO(No).
Step 5 Repeat Step3.
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6 Engineering Guidelines
Step 6 Compared the data recorded in Step3 and Step5 to find the difference in the speech quality when
AMR Downlink Adaptive Threshold Allowed is set to YES(Yes) and when it is set to NO
(No).
Expected result: The MOS when AMR Downlink Adaptive Threshold Allowed is set to YES
(Yes) is higher than the MOS when AMR Downlink Adaptive Threshold Allowed is set to
NO(No).
----End
6.5.4 Deactivation
Using MML Commands
l
Deactivate the adaptive adjustment of uplink AMR coding rate threshold.
On the BSC6900 LMT, perform the following steps:
Step 1 Run the SET GCELLCCAMR command with AMR Uplink Adaptive Threshold Allowed
set to NO(No).
Step 2 Run the LST GCELLCCAMR command to query the value of AMR Uplink Adaptive
Threshold Allowed.
Expected result: The value of AMR Uplink Adaptive Threshold Allowed is No.
----End
l
Deactivate the adaptive adjustment of downlink AMR coding rate threshold.
On the BSC6900 LMT, perform the following steps:
Step 1 Run the SET GCELLCCAMR command with AMR Downlink Adaptive Threshold
Allowed set to NO(No).
Step 2 Run the LST GCELLCCAMR command to query the value of AMR Downlink Adaptive
Threshold Allowed.
Expected result: The value of AMR Downlink Adaptive Threshold Allowed is No.
----End
MML Command Examples
//Deactivating the adaptive adjustment of uplink AMR coding rate threshold.
SET GCELLCCAMR: IDTYPE=BYID, CELLID=0, AMRUADTHAW=NO;
//Deactivating the adaptive adjustment of downlink AMR coding rate threshold.
SET GCELLCCAMR:IDTYPE=BYID, CELLID=0, AMRDADTHAW=NO;
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AMR Feature Parameter Description
6 Engineering Guidelines
Using the CME
NOTE
When configuring the AMR Coding Rate Threshold Adaptive Adjustment feature on the CME, you must
perform a single configuration first, and then perform batch modifications if required.
You must perform a single configuration for a parameter before batch modifications of the parameter. You
are advised to perform batch modifications before logging out of the parameter setting interface.
Step 1 Configure a single object on the CME. (CME single configuration)
Set parameters on the CME configuration interface according to the operation sequence
described in Table 6-7. For the method of performing the CME single configuration, see CME
Single Configuration Operation Guide.
Step 2 (Optional) Modify objects in batches on the CME. (CME batch modification center)
To modify objects, such as BTSs, GSM cells, TRXs, BSCs, and external GSM cells, in batches,
icon on the CME configuration interface to start the batch modification wizard. For
click the
the method of performing batch modifications through the CME batch modification center, press
F1 on the wizard interface to obtain online help.
----End
Table 6-7 Configuring parameters on the CME
SN
MO
NE
Parameter
Name
1
GCELLCC
AMR
BSC6900
AMR Uplink AMRUADT
Adaptive
HAW
Threshold
Allowed
AMR
Downlink
Adaptive
Threshold
Allowed
Parameter
ID
Configura
ble in CME
Batch
Modificati
on Center
Yes
AMRDADT
HAW
6.6 Performance Optimization
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GSM BSS
AMR Feature Parameter Description
6 Engineering Guidelines
6.6.1 AMR FR and AMR HR
Monitoring
You can monitor the counters related to channel usage for the AMR FR and AMR HR traffic in
a cell to determine whether the network performance needs to be optimized. Table 6-8 lists the
related counters.
Table 6-8 Counters related to channel usage for the AMR FR and AMR HR traffic
Counter Description
Counter Name
A0409I:Full Rate AMR TCH Successful Call
Occupancy Times (Service Channel)
CELL.CALL.OCCUPY.SUCC.TCHF.AMR
A0409J:Full Rate AMR TCH Successful
Handover Occupancy Times (Service
Channel)
CELL.CALL.HO.OCCUPY.SUCC.TCHF.
AMR
AR3551C:Traffic Volume on AMR TCHFs
CELL.CHAN.BUSY.NUM.TCHF.AMR.T
RAF.AVE
A0409L:Half Rate AMR TCH Successful
Call Occupancy Times (Service Channel)
CELL.CALL.OCCUPY.SUCC.TCHH.AM
R
A0409M:Half Rate AMR TCH Successful
Handover Occupancy Times (Service
Channel)
CELL.CALL.HO.OCCUPY.SUCC.TCHH.
AMR
AR3552C:Traffic Volume on AMR TCHHs
CELL.CHAN.BUSY.NUM.TCHH.AMR.T
RAF.AVE
Parameter Optimization
If AMRTCHHPRIORALLOW(BSC6900,BSC6910) is set to OFF(Off), use the
TCHBUSYTHRES(BSC6900,BSC6910) parameter to control whether to preferentially allocate
AMR HR channels. To increase the proportion of AMR HR users, set this parameter to a smaller
value. To decrease the proportion of AMR HR users, set this parameter to a larger value.
If AMRTCHHPRIORALLOW(BSC6900,BSC6910) is set to ON(On), use the
AMRTCHHPRIORLOAD(BSC6900,BSC6910) parameter to control whether to preferentially
allocate AMR HR channels. To increase the proportion of AMR HR users, set this parameter to
a smaller value. To decrease the proportion of AMR HR users, set this parameter to a larger
value.
6.6.2 AMR Power Control
N/A
6.6.3 AMR Coding Rate Threshold Adaptive Adjustment
N/A
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GSM BSS
AMR Feature Parameter Description
6 Engineering Guidelines
6.6.4 AMR Radio Link Timer
Monitoring
You can monitor the counters related to AMR FR and AMR HR call drops to determine whether
the network performance needs to be optimized. Table 6-9 lists the related counters.
Table 6-9 Counters related to AMR FR and AMR HR call drops
Counter Description
Counter Name
M0121A:Full Rate AMR Service Channel
Call Drop Times
CELL.CALL.DROP.AMRFR.CAll.FAIL
M0121B:Half Rate AMR Service Channel
Call Drop Times
CELL.CALL.DROP.AMRHR.CAll.FAIL
A0409N:Full Rate AMR Call Drop Rate
CELL.CALL.DROP.CALL.RATE.TCHF.A
MR
A0409P:Half Rate AMR Call Drop Rate
CELL.CALL.DROP.CALL.RATE.TCHH.
AMR
Parameter Optimization
To adjust the effect of the AMR Radio Link Timer feature, run the SET GCELLCCBASIC
command with AFRSAMULFRM(BSC6900,BSC6910), AHRSAMULFRM
(BSC6900,BSC6910), AFRDSBLCNT(BSC6900,BSC6910), and AHRDSBLCNT
(BSC6900,BSC6910) set to appropriate values. The larger the value of this parameter, the lower
the call drop rate, but the more channel resources are wasted. The smaller the value of this
parameter, the fewer channel resources are wasted, but the higher the call drop rate.
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GSM BSS
AMR Feature Parameter Description
7 Parameters
7
Parameters
Table 7-1 Parameter description
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ACSSETF
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Collec
tion of full-rate
Active Coding
Sets (ACSs)
available for
calls. The AMR
is a set of
multiple speech
coding and
decoding rates.
If multiple
ACSs are
configured, the
BSC
preferentially
selects an ACS
with the best
quality and
sends the ACS to
the BTS or MSs.
GUI Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET6,
SET7, SET8,
SET9, SET10,
SET12, SET14,
SINGLEMODE
Unit:None
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Actual Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET6,
SET7, SET8,
SET9, SET10,
SET12, SET14,
SINGLEMODE
Default
Value:SET0-0&
SET1-0&SET20&SET3-0&SE
T4-0&SET5-0&
SET6-0&SET70&SET8-0&SE
T9-0&SET10-0
&SET12-0&SE
T14-0&SINGL
EMODE-1
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ACSSETF
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Collec
tion of full-rate
Active Coding
Sets (ACSs)
available for
calls. The AMR
is a set of
multiple speech
coding and
decoding rates.
If multiple
ACSs are
configured, the
BSC
preferentially
selects an ACS
with the best
quality and
sends the ACS to
the BTS or MSs.
GUI Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET6,
SET7, SET8,
SET9, SET10,
SET12, SET14,
SINGLEMODE
Unit:None
Actual Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET6,
SET7, SET8,
SET9, SET10,
SET12, SET14,
SINGLEMODE
Default
Value:SET0-0&
SET1-0&SET20&SET3-0&SE
T4-0&SET5-0&
SET6-0&SET70&SET8-0&SE
T9-0&SET10-0
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
&SET12-0&SE
T14-0&SINGL
EMODE-1
ACSSETH
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Collec
tion of half-rate
ACSs available
for calls. The
AMR is a set of
multiple speech
coding and
decoding rates.
If multiple
ACSs are
configured, the
BSC
preferentially
selects an ACS
with the best
quality and
sends the ACS to
the BTS or MSs.
GUI Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET8,
SET9, SET10,
SINGLEMODE
Unit:None
Actual Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET8,
SET9, SET10,
SINGLEMODE
Default
Value:SET0-0&
SET1-0&SET20&SET3-0&SE
T4-0&SET5-0&
SET8-0&SET90&SET10-0&SI
NGLEMODE-1
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ACSSETH
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Collec
tion of half-rate
ACSs available
for calls. The
AMR is a set of
multiple speech
coding and
decoding rates.
If multiple
ACSs are
configured, the
BSC
preferentially
selects an ACS
with the best
quality and
sends the ACS to
the BTS or MSs.
GUI Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET8,
SET9, SET10,
SINGLEMODE
Unit:None
Actual Value
Range:SET0,
SET1, SET2,
SET3, SET4,
SET5, SET8,
SET9, SET10,
SINGLEMODE
Default
Value:SET0-0&
SET1-0&SET20&SET3-0&SE
T4-0&SET5-0&
SET8-0&SET90&SET10-0&SI
NGLEMODE-1
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRTCHHP
RIORALLOW
BSC6900
SET
GCELLCHM
GAD
GBFD-113402
Dynamic
Adjustment
Between FR and
HR
Meaning:Wheth
er channels are
assigned and
TCHF-toTCHH handover
decisions are
made on the
basis of the
AMR TCH/H
prior cell load
threshold if
AMR calls are
detected. When
this parameter is
set to ON, the
channel
assignment
algorithm uses
the AMR TCH/
H prior cell load
threshold to
determine
whether to
assign TCHHs
to AMR calls,
and Handover
algorithm
generation 1
uses the AMR
TCH/H prior
cell load
threshold to
determine
whether to hand
over AMR calls
occupying
TCHFs to
TCHHs; When
this parameter is
set to OFF, the
AMR TCH/H
prior cell load
threshold is not
used during
channel
assignment,
Handover
algorithm
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
generation 1
determines
whether to hand
over AMR calls
occupying
TCHFs to
TCHHs without
considering
traffic in the
corresponding
cell.
GUI Value
Range:OFF
(Off), ON(On)
Unit:None
Actual Value
Range:OFF, ON
Default
Value:ON(On)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRTCHHP
RIORALLOW
BSC6910
SET
GCELLCHM
GAD
GBFD-113402
Dynamic
Adjustment
Between FR and
HR
Meaning:Wheth
er channels are
assigned and
TCHF-toTCHH handover
decisions are
made on the
basis of the
AMR TCH/H
prior cell load
threshold if
AMR calls are
detected. When
this parameter is
set to ON, the
channel
assignment
algorithm uses
the AMR TCH/
H prior cell load
threshold to
determine
whether to
assign TCHHs
to AMR calls,
and Handover
algorithm
generation 1
uses the AMR
TCH/H prior
cell load
threshold to
determine
whether to hand
over AMR calls
occupying
TCHFs to
TCHHs; When
this parameter is
set to OFF, the
AMR TCH/H
prior cell load
threshold is not
used during
channel
assignment,
Handover
algorithm
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AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
generation 1
determines
whether to hand
over AMR calls
occupying
TCHFs to
TCHHs without
considering
traffic in the
corresponding
cell.
GUI Value
Range:OFF
(Off), ON(On)
Unit:None
Actual Value
Range:OFF, ON
Default
Value:ON(On)
AMRTCHHP
RIORLOAD
BSC6900
SET
GCELLCHM
GAD
GBFD-113402
Dynamic
Adjustment
Between FR and
HR
Meaning:Load
threshold for
assigning half
rate channels
preferentially. If
the current TCH
seizure ratio of
the cell is greater
than or equal to
this threshold,
AMR half rate
channels are
assigned
preferentially.
GUI Value
Range:0~99
Unit:%
Actual Value
Range:0~99
Default Value:
55
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRTCHHP
RIORLOAD
BSC6910
SET
GCELLCHM
GAD
GBFD-113402
Dynamic
Adjustment
Between FR and
HR
Meaning:Load
threshold for
assigning half
rate channels
preferentially. If
the current TCH
seizure ratio of
the cell is greater
than or equal to
this threshold,
AMR half rate
channels are
assigned
preferentially.
GUI Value
Range:0~99
Unit:%
Actual Value
Range:0~99
Default Value:
55
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTF1
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTF1
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTF2
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
49
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTF2
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
50
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTF3
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
51
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTF3
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
52
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTH1
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
53
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTH1
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
54
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTH2
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
55
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTH2
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
56
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTH3
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
57
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
15
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
58
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLHYSTH3
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
59
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
15
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Copyright © Huawei Technologies Co., Ltd.
60
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHF1
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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61
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
14
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
62
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHF1
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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63
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
14
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64
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHF2
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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65
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
18
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Copyright © Huawei Technologies Co., Ltd.
66
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHF2
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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67
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
18
Issue 03 (2014-10-27)
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Copyright © Huawei Technologies Co., Ltd.
68
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHF3
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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69
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
24
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Copyright © Huawei Technologies Co., Ltd.
70
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHF3
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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71
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
24
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72
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHH1
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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73
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
20
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74
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHH1
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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75
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
20
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76
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHH2
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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77
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
26
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78
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHH2
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
Issue 03 (2014-10-27)
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79
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
26
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80
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHH3
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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81
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
63
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82
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLTHH3
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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83
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
63
SERVICEMO
DE
BSC6900
ADD BTS
GBFD-118601
Abis over IP
MOD BTS
GBFD-118401
Abis
Transmission
Optimization
Meaning:Servic
e type of the
BTS.
TDM:Time
Division
Multiplex
Mode;
HDLC:High
level Data Link
Control Mode;
HDLC_HubBT
S:Hub Base
Transceiver
Station Mode.
This value is
available for
versions earlier
than current
version only. It
is retained here
for
compatibility
concerns only;
IP:Internet
Protocol Mode.
GUI Value
Range:TDM,
HDLC,
HDLC_HubBT
S, IP
Unit:None
Actual Value
Range:TDM,
HDLC,
HubBTS, IP
Default
Value:TDM
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84
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
SERVICEMO
DE
BSC6910
ADD BTS
GBFD-118601
Abis over IP
Meaning:Servic
e type of the
BTS.
TDM:Time
Division
Multiplex
Mode;
IP:Internet
Protocol Mode.
MOD BTS
GUI Value
Range:TDM, IP
Unit:None
Actual Value
Range:TDM, IP
Default
Value:IP
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85
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ACTCDSETF
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115701
TFO
Meaning:Active
coding set
(ACS)[F],
indicates a set of
full-rate coding
rates currently
available for
calls. The AMR
is a set of
multiple speech
coding and
decoding rates.If
an IP based user
plane AInterface is
chosen,
5.15KBIT/S will
not be included
(see 3GPP TS
28.062).
GUI Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S,
10_2KBIT/S,
12_2KBIT/S
Unit:None
Actual Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S,
10_2KBIT/S,
12_2KBIT/S
Default Value:
4_75KBIT/
S-1&5_15KBIT
/
S-0&5_90KBIT
/
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
S-1&6_70KBIT
/
S-0&7_40KBIT
/
S-1&7_95KBIT
/
S-0&10_2KBIT
/
S-0&12_2KBIT
/S-1
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87
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ACTCDSETF
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Active
coding set
(ACS)[F],
indicates a set of
full-rate coding
rates currently
available for
calls. The AMR
is a set of
multiple speech
coding and
decoding rates.If
an IP based user
plane AInterface is
chosen,
5.15KBIT/S will
not be included
(see 3GPP TS
28.062).
GUI Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S,
10_2KBIT/S,
12_2KBIT/S
Unit:None
Actual Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S,
10_2KBIT/S,
12_2KBIT/S
Default Value:
4_75KBIT/
S-1&5_15KBIT
/
S-0&5_90KBIT
/
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
S-1&6_70KBIT
/
S-0&7_40KBIT
/
S-1&7_95KBIT
/
S-0&10_2KBIT
/
S-0&12_2KBIT
/S-1
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ACTCDSETH
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
GBFD-115701
TFO
Meaning:Active
coding set
(ACS)[H],
indicates set of
half-rate coding
rates currently
available for
calls. The AMR
is a set of
multiple speech
coding and
decoding rates.If
an IP based user
plane AInterface is
chosen,
5.15KBIT/S will
not be included
(see 3GPP TS
28.062).
GUI Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S
Unit:None
Actual Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S
Default Value:
4_75KBIT/
S-1&5_15KBIT
/
S-0&5_90KBIT
/
S-1&6_70KBIT
/
S-0&7_40KBIT
/
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
S-1&7_95KBIT
/S-0
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91
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ACTCDSETH
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Active
coding set
(ACS)[H],
indicates set of
half-rate coding
rates currently
available for
calls. The AMR
is a set of
multiple speech
coding and
decoding rates.If
an IP based user
plane AInterface is
chosen,
5.15KBIT/S will
not be included
(see 3GPP TS
28.062).
GUI Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S
Unit:None
Actual Value
Range:
4_75KBIT/S,
5_15KBIT/S,
5_90KBIT/S,
6_70KBIT/S,
7_40KBIT/S,
7_95KBIT/S
Default Value:
4_75KBIT/
S-1&5_15KBIT
/
S-0&5_90KBIT
/
S-1&6_70KBIT
/
S-0&7_40KBIT
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
/
S-1&7_95KBIT
/S-0
INITCDMDF
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Initial
coding mode
used for full rate
AMR calls. The
four values 0, 1,
2, and 3 of this
parameter
respectively
represent the
lowest, low,
high, and
highest coding
rates in the ACS.
This parameter
does not take
effect in A over
IP mode. In A
over IP mode,
the TC is
integrated into
the UMG. The
BSC obtains the
initial coding
mode based on
3GPP TS 45.009
instead of
parameter
configuration.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:1
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
INITCDMDF
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Initial
coding mode
used for full rate
AMR calls. The
four values 0, 1,
2, and 3 of this
parameter
respectively
represent the
lowest, low,
high, and
highest coding
rates in the ACS.
This parameter
does not take
effect in A over
IP mode. In A
over IP mode,
the TC is
integrated into
the UMG. The
BSC obtains the
initial coding
mode based on
3GPP TS 45.009
instead of
parameter
configuration.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:1
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
INITCDMDH
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Initial
coding mode
used for half rate
AMR calls. The
four values 0 to 3
of this parameter
respectively
represent the
lowest, low,
high, and
highest coding
rates in the ACS.
This parameter
does not take
effect in A over
IP mode. In A
over IP mode,
the TC is
integrated into
the UMG. The
BSC obtains the
initial coding
mode based on
3GPP TS 45.009
instead of
parameter
configuration.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:0
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
INITCDMDH
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Initial
coding mode
used for half rate
AMR calls. The
four values 0 to 3
of this parameter
respectively
represent the
lowest, low,
high, and
highest coding
rates in the ACS.
This parameter
does not take
effect in A over
IP mode. In A
over IP mode,
the TC is
integrated into
the UMG. The
BSC obtains the
initial coding
mode based on
3GPP TS 45.009
instead of
parameter
configuration.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:0
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
RATECTRLS
W
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115502
AMR HR
GBFD-115507
WB AMR
Meaning:Switch
for controlling
the AMR rate.
Value ALG1
indicates that C/
I is used to
control the
AMR rate.
Value ALG2
indicates that
BER is used to
control the
AMR rate.
GUI Value
Range:ALG1
(Algorithm I),
ALG2
(Algorithm II),
NONE(None)
Unit:None
Actual Value
Range:ALG1,
ALG2, NONE
Default
Value:ALG1
(Algorithm I)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
RATECTRLS
W
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115502
AMR HR
GBFD-115507
WB AMR
Meaning:Switch
for controlling
the AMR rate.
Value ALG1
indicates that C/
I is used to
control the
AMR rate.
Value ALG2
indicates that
BER is used to
control the
AMR rate.
GUI Value
Range:ALG1
(Algorithm I),
ALG2
(Algorithm II),
NONE(None)
Unit:None
Actual Value
Range:ALG1,
ALG2, NONE
Default
Value:ALG1
(Algorithm I)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRRATEAD
JOPTALG
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115502
AMR HR
Meaning:Algorithm for
optimizing the
adjustment of
ARM rate in
different
scenarios. If this
parameter is set
to MEAN, the
algorithm that
applies to
scenarios with
evenly
distributed
interference is
used. If this
parameter is set
to EACH, the
algorithm that
applies to
scenarios with
various
interference is
used.
GUI Value
Range:EACH
(Each
Interference),
MEAN(Mean
Interference)
Unit:None
Actual Value
Range:EACH,
MEAN
Default
Value:EACH
(Each
Interference)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRRATEAD
JOPTALG
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115502
AMR HR
Meaning:Algorithm for
optimizing the
adjustment of
ARM rate in
different
scenarios. If this
parameter is set
to MEAN, the
algorithm that
applies to
scenarios with
evenly
distributed
interference is
used. If this
parameter is set
to EACH, the
algorithm that
applies to
scenarios with
various
interference is
used.
GUI Value
Range:EACH
(Each
Interference),
MEAN(Mean
Interference)
Unit:None
Actual Value
Range:EACH,
MEAN
Default
Value:EACH
(Each
Interference)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHF3
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115507
WB AMR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
24
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHF3
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115507
WB AMR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
24
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTF3
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTF3
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHF2
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115507
WB AMR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
18
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108
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHF2
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115507
WB AMR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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109
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
18
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110
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHF1
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115507
WB AMR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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111
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
14
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112
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHF1
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
GBFD-115507
WB AMR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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113
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
14
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114
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTF1
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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115
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTF1
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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116
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTF2
BSC6900
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
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117
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTF2
BSC6910
SET
GCELLCCAM
R
GBFD-115501
AMR FR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:3
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118
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHH1
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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119
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
20
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120
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHH1
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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121
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
20
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122
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHH2
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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123
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
26
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124
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHH2
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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125
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
26
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126
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHH3
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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127
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
63
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128
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULTHH3
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~63
Unit:0.5dB
Actual Value
Range:0~31.5
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129
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
63
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130
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTH1
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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131
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTH1
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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132
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTH2
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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133
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTH2
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
Default Value:2
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134
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTH3
BSC6900
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
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135
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
14
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136
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
ULHYSTH3
BSC6910
SET
GCELLCCAM
R
GBFD-115502
AMR HR
Meaning:Based
on the RQI in the
measurement
report or BER
calculated by the
RQI, the BTS
and MS
automatically
adjust the
current speech
coding rate
according to the
related
algorithm. The
coding rate
adjustment
threshold is the
RQI threshold.
The RQI
indicates the
carrier-tointerference
ratio (CIR) of a
call. If RQI
equals 1, the
CIR is 0.5 dB; if
RQI equals 2,
the CIR is 1 dB;
and so forth.
Since there are
multiple coding
rates in the ACS,
there is an
adjustment
threshold and an
adjustment
hysteresis
between the
adjacent coding
rates.
GUI Value
Range:0~15
Unit:0.5dB
Actual Value
Range:0~7.5
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137
GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Default Value:
14
LTFERTGT
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Target
voice quality
value associated
with the
automatic
adjustment of
the uplink
threshold of
AMR handover
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:8
DLLTFERTG
T
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Target
value of the
voice quality
automatically
adjusted through
the downlink
threshold of
AMR handover.
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:8
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138
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRUADTH
AW
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Wheth
er to enable the
adaptive
adjustment
function of
AMR uplink
threshold. After
this function is
enabled, the
BTS estimates
the long-term
voice quality
(indicated by the
long-term FER
(frame erase
ratio)) and
compares the
estimated result
with the
specified target
voice quality. If
the estimated
result does not
conform to the
target voice
quality, it
indicates that the
current AMR
handover
threshold is the
best for the
current radio
conditions. In
this case, the
BSC uses the
relevant
algorithm to
adjust the
adaptive
threshold
according to the
relationship
between the
estimated voice
quality and the
target voice
quality.
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
GUI Value
Range:NO(No),
YES(Yes)
Unit:None
Actual Value
Range:NO, YES
Default
Value:NO(No)
LTFERLOWT
H
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Lower
voice quality
threshold
associated with
the automatic
adjustment of
the AMR
handover uplink
threshold;The
value of this
parameter must
be smaller than
or equal to the
value of Uplink
Long-term FER
Target.
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:2
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
LTFERUPTH
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Upper
voice quality
threshold
associated with
the automatic
adjustment of
the AMR
handover uplink
threshold
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:
60
LTTHADJFA
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Factor
of uplink
threshold
adjustment. It
indicates the
linear relation
between the
threshold
adjustment
value and the
logarithmic
FER.
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:
40
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDADTH
AW
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Wheth
er to enable the
adaptive
adjustment
function of
AMR downlink
threshold. After
this function is
enabled, the
BTS estimates
the long-term
voice quality
(indicated by the
long-term FER
(frame erase
ratio)) and
compares the
estimated result
with the
specified target
voice quality. If
the estimated
result does not
conform to the
target voice
quality, it
indicates that the
current AMR
handover
threshold is not
the best for the
current radio
conditions. In
this case, the
BSC adjusts
threshold
adaptively
according to the
relationship
between the
estimated voice
quality and the
target voice
quality.
GUI Value
Range:NO(No),
YES(Yes)
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AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Unit:None
Actual Value
Range:NO, YES
Default
Value:NO(No)
DLLTFERLO
WTH
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Lower
voice quality
threshold
associated with
the automatic
adjustment of
the AMR
downlink
handover
threshold. The
value of this
parameter must
be smaller than
or equal to the
value of
"Downlink
Long-term FER
Target".
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:2
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
DLLTFERUP
TH
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Upper
voice quality
threshold
associated with
the automatic
adjustment of
the AMR
handover
downlink
threshold.
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:
60
DLLTTHADJ
FA
BSC6900
SET
GCELLCCAM
R
GBFD-115506
AMR Coding
Rate Threshold
Adaptive
Adjustment
Meaning:Factor
of downlink
threshold
adjustment. It
indicates the
linear
relationship
between the
threshold
adjustment
value and the
logarithmic
FER.
GUI Value
Range:2~255
Unit:None
Actual Value
Range:2~255
Default Value:
40
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRPCADJP
ERIOD
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Minim
um interval
between two
consecutive
AMR power
control
commands.
GUI Value
Range:1~15
Unit:480ms
Actual Value
Range:
480~7200
Default Value:3
AMRPCADJP
ERIOD
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Minim
um interval
between two
consecutive
AMR power
control
commands.
GUI Value
Range:1~15
Unit:480ms
Actual Value
Range:
480~7200
Default Value:3
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULLEVF
TLEN
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
uplink AMR
signal strength.
A single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULLEVF
TLEN
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
uplink AMR
signal strength.
A single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLLEVF
TLEN
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
downlink AMR
signal strength.
A single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLLEVF
TLEN
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
downlink AMR
signal strength.
A single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQUAF
TLEN
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
uplink AMR
signal quality. A
single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQUAF
TLEN
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
uplink AMR
signal quality. A
single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQUAF
TLEN
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
downlink AMR
signal quality. A
single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQUAF
TLEN
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of
measurement
reports sampled
for averaging
downlink AMR
signal quality. A
single
measurement
report cannot
reflect the actual
network
situations
accurately.
Therefore, the
BSC needs to
average the
measured values
in several
successive
measurement
reports to reflect
the radio
environment.
GUI Value
Range:1~20
Unit:480ms
Actual Value
Range:
480~9600
Default Value:5
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMRCOM
PREG
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Wheth
er to enable the
compensation of
AMR
measurement
reports in
Huawei power
control
algorithm II. If
this parameter is
set to YES,
Huawei power
control
algorithm II puts
a currently
received
measurement
report into the
measurement
report
compensation
queue. Then, the
algorithm
records the
change in the
transmit power
based on the
MS/BTS power
in the
measurement
report.
According to the
power change,
the algorithm
compensates the
received signal
level in a history
measurement
report after
measurement
report
interpolation.
Before making a
power control
decision, the
BSC samples
and weights the
received signal
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
level and quality
in several
history
measurement
reports. The MS/
BTS transmit
power varies
over these
measurement
reports. To
ensure the
accuracy of the
received signal
level and quality
to be weighted,
the power
control
algorithm needs
to compensate
the received
signal level and
quality in the
history
measurement
reports where
the transmit
power differs
from the current
transmit power.
GUI Value
Range:NO(No),
YES(Yes)
Unit:None
Actual Value
Range:NO, YES
Default
Value:YES
(Yes)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMRCOM
PREG
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Wheth
er to enable the
compensation of
AMR
measurement
reports in
Huawei power
control
algorithm II. If
this parameter is
set to YES,
Huawei power
control
algorithm II puts
a currently
received
measurement
report into the
measurement
report
compensation
queue. Then, the
algorithm
records the
change in the
transmit power
based on the
MS/BTS power
in the
measurement
report.
According to the
power change,
the algorithm
compensates the
received signal
level in a history
measurement
report after
measurement
report
interpolation.
Before making a
power control
decision, the
BSC samples
and weights the
received signal
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
level and quality
in several
history
measurement
reports. The MS/
BTS transmit
power varies
over these
measurement
reports. To
ensure the
accuracy of the
received signal
level and quality
to be weighted,
the power
control
algorithm needs
to compensate
the received
signal level and
quality in the
history
measurement
reports where
the transmit
power differs
from the current
transmit power.
GUI Value
Range:NO(No),
YES(Yes)
Unit:None
Actual Value
Range:NO, YES
Default
Value:YES
(Yes)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULPRED
LEND
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of uplink
AMR
measurement
reports (MRs)
that the BSC
predicts. It takes
a while to
confirm the
power control
effect after the
BSC sends a
command for
power control.
The power
control
algorithm uses
the MR
prediction filter
function to
avoid late power
control.
Specifically, the
BSC samples
multiple
downlink MRs
in a short time
and then weigh
them to predict
future N MRs.
This parameter
specifies the
number N.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:0
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULPRED
LEND
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of uplink
AMR
measurement
reports (MRs)
that the BSC
predicts. It takes
a while to
confirm the
power control
effect after the
BSC sends a
command for
power control.
The power
control
algorithm uses
the MR
prediction filter
function to
avoid late power
control.
Specifically, the
BSC samples
multiple
downlink MRs
in a short time
and then weigh
them to predict
future N MRs.
This parameter
specifies the
number N.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:0
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLPRED
LEND
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of downlink
AMR
measurement
reports that the
BSC predicts.
The BSC takes a
while to confirm
the power
control effect of
a power control
command.
Therefore, the
BSC makes a
power control
decision based
on a
measurement
report that lags
behind the
changes in the
receive level and
quality instead
of reflecting the
real-time radio
environment. As
a result, the
power control is
late. To prevent
late power
control to a
specified
degree, the
power control
algorithm
involves a
measurement
report prediction
filter. The BSC
can sample
several
downlink
measurement
reports in a short
time and filter
them according
to a specific
weight to predict
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
future N
measurement
reports. This
parameter
specifies the
number N.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:0
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLPRED
LEND
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Numb
er of downlink
AMR
measurement
reports that the
BSC predicts.
The BSC takes a
while to confirm
the power
control effect of
a power control
command.
Therefore, the
BSC makes a
power control
decision based
on a
measurement
report that lags
behind the
changes in the
receive level and
quality instead
of reflecting the
real-time radio
environment. As
a result, the
power control is
late. To prevent
late power
control to a
specified
degree, the
power control
algorithm
involves a
measurement
report prediction
filter. The BSC
can sample
several
downlink
measurement
reports in a short
time and filter
them according
to a specific
weight to predict
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
future N
measurement
reports. This
parameter
specifies the
number N.
GUI Value
Range:0~3
Unit:None
Actual Value
Range:0~3
Default Value:0
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULSSHT
HRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Upper
threshold for
uplink AMR
signal strength If
the uplink
received AMR
signal level is
greater than this
threshold, a
power decrease
is calculated.
Then, the actual
step for power
adjustment uses
the minimum
value between
the power
decrease and the
maximum
power
adjustment step
allowed by the
quality zone to
which the
receive quality
belongs. Power
decrease =
uplink received
signal level ("AMR UL
RX_LEV Upper
Threshold" +
"AMR UL
RX_LEV Lower
Threshold")/2
The maximum
power
adjustment step
allowed by the
quality zone is
chosen from
"AMR MAX
Down Adj.
Value Qual.
Zone 0", "AMR
MAX Down
Adj. Value
Qual. Zone 1",
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AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
and "AMR
MAX Down
Adj. Value
Qual. Zone 2"
according to the
quality zone.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
30
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULSSHT
HRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Upper
threshold for
uplink AMR
signal strength If
the uplink
received AMR
signal level is
greater than this
threshold, a
power decrease
is calculated.
Then, the actual
step for power
adjustment uses
the minimum
value between
the power
decrease and the
maximum
power
adjustment step
allowed by the
quality zone to
which the
receive quality
belongs. Power
decrease =
uplink received
signal level ("AMR UL
RX_LEV Upper
Threshold" +
"AMR UL
RX_LEV Lower
Threshold")/2
The maximum
power
adjustment step
allowed by the
quality zone is
chosen from
"AMR MAX
Down Adj.
Value Qual.
Zone 0", "AMR
MAX Down
Adj. Value
Qual. Zone 1",
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AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
and "AMR
MAX Down
Adj. Value
Qual. Zone 2"
according to the
quality zone.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
30
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULSSLT
HRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Lower
threshold for
uplink AMR
signal strength.
If the uplink
received AMR
signal level is
less than this
threshold, a
power increase
is calculated.
Then, the actual
step for power
adjustment uses
the minimum
value between
the power
increase and the
"AMR MAX Up
Adj. PC Value
by RX_LEV".
Power increase
= ("AMR UL
RX_LEV Upper
Threshold" +
"AMR UL
RX_LEV Lower
Threshold")/2 uplink received
signal level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
18
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULSSLT
HRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Lower
threshold for
uplink AMR
signal strength.
If the uplink
received AMR
signal level is
less than this
threshold, a
power increase
is calculated.
Then, the actual
step for power
adjustment uses
the minimum
value between
the power
increase and the
"AMR MAX Up
Adj. PC Value
by RX_LEV".
Power increase
= ("AMR UL
RX_LEV Upper
Threshold" +
"AMR UL
RX_LEV Lower
Threshold")/2 uplink received
signal level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
18
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQHT
HRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for decreasing
the power of an
uplink AMR
call. If the MS
transmits AMR
signals at a
quality level less
than "AMR
ULQual. Upper
Threshold", the
BTS decreases
the power of the
MS. If (uplink
receive level "AMR MAX
Down Adj. PC
Value by Qual.")
< "AMR UL
RX_LEV Lower
Threshold", the
BTS does not
adjust the
transmit power.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:0
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQHT
HRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for decreasing
the power of an
uplink AMR
call. If the MS
transmits AMR
signals at a
quality level less
than "AMR
ULQual. Upper
Threshold", the
BTS decreases
the power of the
MS. If (uplink
receive level "AMR MAX
Down Adj. PC
Value by Qual.")
< "AMR UL
RX_LEV Lower
Threshold", the
BTS does not
adjust the
transmit power.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:0
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQLO
WTHRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for increasing
the power of an
uplink AMR
call. If the MS
transmits AMR
signals at a
quality level
greater than or
equal to "AMR
UL Qual. Lower
Threshold", the
BTS increases
the power of the
MS. If (uplink
receive level +
"AMR MAX Up
Adj. PC Value
by Qual.") >
"AMR UL
RX_LEV Upper
Threshold", the
BSC increases
the power of the
BTS by the step
of ("AMR UL
RX_LEV Upper
Threshold" uplink receive
level).
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:3
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQLO
WTHRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for increasing
the power of an
uplink AMR
call. If the MS
transmits AMR
signals at a
quality level
greater than or
equal to "AMR
UL Qual. Lower
Threshold", the
BTS increases
the power of the
MS. If (uplink
receive level +
"AMR MAX Up
Adj. PC Value
by Qual.") >
"AMR UL
RX_LEV Upper
Threshold", the
BSC increases
the power of the
BTS by the step
of ("AMR UL
RX_LEV Upper
Threshold" uplink receive
level).
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:3
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLSSHT
HRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Upper
threshold for
downlink AMR
signal strength.
If the downlink
received AMR
signal level
exceeds this
threshold, a
power decrease
is calculated.
Then, the power
is decreased by
the least of the
power decrease
and maximum
power
adjustment step
allowed by the
quality zone to
which the
received signal
quality belongs.
Power decrease
= Downlink
received signal
level - ("AMR
DL RX_LEV
Upper
Threshold" +
"AMR DL
RX_LEV Lower
Threshold")/2
The maximum
power
adjustment step
allowed by the
quality zone is
chosen from
"AMR MAX
Down Adj.
Value Qual.
Zone 0", "AMR
MAX Down
Adj. Value
Qual. Zone 1",
and "AMR
MAX Down
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AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Adj. Value
Qual. Zone 2"
according to the
quality zone.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
33
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLSSHT
HRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Upper
threshold for
downlink AMR
signal strength.
If the downlink
received AMR
signal level
exceeds this
threshold, a
power decrease
is calculated.
Then, the power
is decreased by
the least of the
power decrease
and maximum
power
adjustment step
allowed by the
quality zone to
which the
received signal
quality belongs.
Power decrease
= Downlink
received signal
level - ("AMR
DL RX_LEV
Upper
Threshold" +
"AMR DL
RX_LEV Lower
Threshold")/2
The maximum
power
adjustment step
allowed by the
quality zone is
chosen from
"AMR MAX
Down Adj.
Value Qual.
Zone 0", "AMR
MAX Down
Adj. Value
Qual. Zone 1",
and "AMR
MAX Down
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AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
Adj. Value
Qual. Zone 2"
according to the
quality zone.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
33
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLSSLT
HRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Lower
threshold for
downlink AMR
signal strength.
If the downlink
received AMR
signal level is
less than this
threshold, a
power increase
is calculated.
Then, the actual
step for power
adjustment uses
the minimum
value between
the power
increase and the
"AMR MAX Up
Adj. PC Value
by RX_LEV".
Power increase
= ("AMR DL
RX_LEV Upper
Threshold" +
"AMR DL
RX_LEV Lower
Threshold")/2 downlink
received signal
level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
25
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLSSLT
HRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Lower
threshold for
downlink AMR
signal strength.
If the downlink
received AMR
signal level is
less than this
threshold, a
power increase
is calculated.
Then, the actual
step for power
adjustment uses
the minimum
value between
the power
increase and the
"AMR MAX Up
Adj. PC Value
by RX_LEV".
Power increase
= ("AMR DL
RX_LEV Upper
Threshold" +
"AMR DL
RX_LEV Lower
Threshold")/2 downlink
received signal
level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:
25
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQHT
HRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for decreasing
downlink AMR
signal power. If
the BTS
transmits AMR
signals at a
quality level less
than "AMR DL
Qual. Upper
Threshold", the
BSC decreases
the power of the
BTS. If
(downlink
receive level "AMR MAX
Down Adj. PC
Value by Qual.")
< "AMR DL
RX_LEV Lower
Threshold", the
BSC does not
adjust the
transmit power.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:0
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQHT
HRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for decreasing
downlink AMR
signal power. If
the BTS
transmits AMR
signals at a
quality level less
than "AMR DL
Qual. Upper
Threshold", the
BSC decreases
the power of the
BTS. If
(downlink
receive level "AMR MAX
Down Adj. PC
Value by Qual.")
< "AMR DL
RX_LEV Lower
Threshold", the
BSC does not
adjust the
transmit power.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:0
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQLT
HRED
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for increasing
downlink AMR
signal power. If
the BTS
transmits AMR
signals at a
quality level
greater than or
equal to "AMR
DL Qual. Lower
Threshold", the
BSC increases
the power of the
BTS. If
(downlink
receive level +
"AMR MAX Up
Adj. PC Value
by Qual.") >
"AMR DL
RX_LEV Upper
Threshold", the
BSC increases
the power of the
BTS by the step
of ("AMR DL
RX_LEV Upper
Threshold" downlink
receive level).
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:3
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQLT
HRED
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Qualit
y level threshold
for increasing
downlink AMR
signal power. If
the BTS
transmits AMR
signals at a
quality level
greater than or
equal to "AMR
DL Qual. Lower
Threshold", the
BSC increases
the power of the
BTS. If
(downlink
receive level +
"AMR MAX Up
Adj. PC Value
by Qual.") >
"AMR DL
RX_LEV Upper
Threshold", the
BSC increases
the power of the
BTS by the step
of ("AMR DL
RX_LEV Upper
Threshold" downlink
receive level).
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:3
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMAXST
EP0
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
when the
received signal
quality belongs
to quality zone
0. Huawei
power control
algorithm
generation II
classifies the
received signal
quality into
three quality
zones. The
maximum step
by which the
power can be
decreased
according to
signal level
varies according
to the quality
zones.
GUI Value
Range:0~30
Unit:dB
Actual Value
Range:0~30
Default Value:2
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMAXST
EP0
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
when the
received signal
quality belongs
to quality zone
0. Huawei
power control
algorithm
generation II
classifies the
received signal
quality into
three quality
zones. The
maximum step
by which the
power can be
decreased
according to
signal level
varies according
to the quality
zones.
GUI Value
Range:0~30
Unit:dB
Actual Value
Range:0~30
Default Value:2
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMAXST
EP1
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
when the
received signal
quality belongs
to quality zone
1. Huawei
power control
algorithm
generation II
classifies the
received signal
quality into
three quality
zones. The
maximum step
by which the
power can be
decreased
according to
signal level
varies according
to the quality
zones.
GUI Value
Range:0~30
Unit:dB
Actual Value
Range:0~30
Default Value:0
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMAXST
EP1
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
when the
received signal
quality belongs
to quality zone
1. Huawei
power control
algorithm
generation II
classifies the
received signal
quality into
three quality
zones. The
maximum step
by which the
power can be
decreased
according to
signal level
varies according
to the quality
zones.
GUI Value
Range:0~30
Unit:dB
Actual Value
Range:0~30
Default Value:0
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMAXST
EP2
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
when the
received signal
quality belongs
to quality zone
2. Huawei
power control
algorithm
generation II
classifies the
received signal
quality into
three quality
zones. The
maximum step
by which the
power can be
decreased
according to
signal level
varies according
to the quality
zones.
GUI Value
Range:0~30
Unit:dB
Actual Value
Range:0~30
Default Value:0
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMAXST
EP2
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
when the
received signal
quality belongs
to quality zone
2. Huawei
power control
algorithm
generation II
classifies the
received signal
quality into
three quality
zones. The
maximum step
by which the
power can be
decreased
according to
signal level
varies according
to the quality
zones.
GUI Value
Range:0~30
Unit:dB
Actual Value
Range:0~30
Default Value:0
AMRQUALST
EP
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
according to
received signal
quality.
GUI Value
Range:0~4
Unit:dB
Actual Value
Range:0~4
Default Value:4
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AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRQUALST
EP
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be decreased
according to
received signal
quality.
GUI Value
Range:0~4
Unit:dB
Actual Value
Range:0~4
Default Value:4
AMRMAXVA
LADJRX
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be increased
according to
received signal
level.
GUI Value
Range:0~32
Unit:dB
Actual Value
Range:0~32
Default Value:8
AMRMAXVA
LADJRX
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be increased
according to
received signal
level.
GUI Value
Range:0~32
Unit:dB
Actual Value
Range:0~32
Default Value:8
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRMAXAD
JPCVAL
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be increased
according to
received signal
quality.
GUI Value
Range:0~32
Unit:dB
Actual Value
Range:0~32
Default Value:8
AMRMAXAD
JPCVAL
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum step by
which the power
can be increased
according to
received signal
quality.
GUI Value
Range:0~32
Unit:dB
Actual Value
Range:0~32
Default Value:8
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQUA
LBADTRIG
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g uplink power
control, if the
uplink receive
quality level is
equal to or
greater than this
threshold,
"AMR UL
RX_LEV Upper
Threshold" is
increased by
"AMR UL Qual.
Bad
UpLEVDiff" to
further increase
the expected
uplink power
level.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:3
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQUA
LBADTRIG
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g uplink power
control, if the
uplink receive
quality level is
equal to or
greater than this
threshold,
"AMR UL
RX_LEV Upper
Threshold" is
increased by
"AMR UL Qual.
Bad
UpLEVDiff" to
further increase
the expected
uplink power
level.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:3
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQUA
LBADUPLEV
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g uplink power
control, if the
uplink receive
quality level is
equal to or
greater than
"AMR UL Qual.
Bad Trig
Threshold",
"AMR UL
RX_LEV Upper
Threshold" is
increased by
"AMR UL Qual.
Bad
UpLEVDiff" to
further increase
the expected
uplink power
level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:6
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRULQUA
LBADUPLEV
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g uplink power
control, if the
uplink receive
quality level is
equal to or
greater than
"AMR UL Qual.
Bad Trig
Threshold",
"AMR UL
RX_LEV Upper
Threshold" is
increased by
"AMR UL Qual.
Bad
UpLEVDiff" to
further increase
the expected
uplink power
level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:6
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQUA
LBADTRIG
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g downlink
power control, if
the downlink
receive quality
level is equal to
or greater than
this threshold,
"AMR DL
RX_LEV Upper
Threshold" is
increased by
"AMR DL Qual
Bad
UpLEVDiff" to
further increase
the expected
downlink power
level.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:2
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196
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQUA
LBADTRIG
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g downlink
power control, if
the downlink
receive quality
level is equal to
or greater than
this threshold,
"AMR DL
RX_LEV Upper
Threshold" is
increased by
"AMR DL Qual
Bad
UpLEVDiff" to
further increase
the expected
downlink power
level.
GUI Value
Range:0~7
Unit:None
Actual Value
Range:0~7
Default Value:2
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197
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQUA
LBADUPLEV
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g downlink
power control, if
the downlink
receive quality
level is equal to
or greater than
"AMR DL Qual
Bad Trig
Threshold",
"AMR DL
RX_LEV Upper
Threshold" is
increased by
"AMR DL Qual
Bad
UpLEVDiff" to
further increase
the expected
downlink power
level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:8
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198
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRDLQUA
LBADUPLEV
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Durin
g downlink
power control, if
the downlink
receive quality
level is equal to
or greater than
"AMR DL Qual
Bad Trig
Threshold",
"AMR DL
RX_LEV Upper
Threshold" is
increased by
"AMR DL Qual
Bad
UpLEVDiff" to
further increase
the expected
downlink power
level.
GUI Value
Range:0~63
Unit:dB
Actual Value
Range:0~63
Default Value:8
AMRBTSPWR
NUM
BSC6900
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum degree by
which the BSC
can control the
power of the
AMR BTS
dynamically
GUI Value
Range:1~16
Unit:2dB
Actual Value
Range:2~32
Default Value:
16
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199
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AMRBTSPWR
NUM
BSC6910
SET
GCELLPWR2
GBFD-115503
AMR Power
Control
Meaning:Maxi
mum degree by
which the BSC
can control the
power of the
AMR BTS
dynamically
GUI Value
Range:1~16
Unit:2dB
Actual Value
Range:2~32
Default Value:
16
EncodeMode
BSC6900
SET TCPARA
GBFD-115501
AMR FR
GBFD-113301
Enhanced Full
Rate
GBFD-115502
AMR HR
Meaning:Wheth
er to improve the
voice quality of
NBAMR and
EFR services. If
ECODEC mode
is used, the
downlink MOS
of NBAMR and
EFR services is
significantly
improved. This
parameter is
used in A over
TDM.
GUI Value
Range:STAND
ARD(Standard
code mode),
ECODEC
(Enhanced code
mode)
Unit:None
Actual Value
Range:STAND
ARD, ECODEC
Default
Value:STAND
ARD(Standard
code mode)
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AFRDSBLCN
T
BSC6900
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Count
er for radio link
failures during
an AMR full rate
call. See the
description of
"Radio Link
Timeout" in
"SET
GCELLCCBAS
IC".
GUI Value
Range:4_Times,
8_Times,
12_Times,
16_Times,
20_Times,
24_Times,
28_Times,
32_Times,
36_Times,
40_Times,
44_Times,
48_Times,
52_Times,
56_Times,
60_Times,
64_Times
Unit:480ms
Actual Value
Range:
1920~30720
Default Value:
52_Times
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201
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AFRDSBLCN
T
BSC6910
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Count
er for radio link
failures during
an AMR full rate
call. See the
description of
"Radio Link
Timeout" in
"SET
GCELLCCBAS
IC".
GUI Value
Range:4_Times,
8_Times,
12_Times,
16_Times,
20_Times,
24_Times,
28_Times,
32_Times,
36_Times,
40_Times,
44_Times,
48_Times,
52_Times,
56_Times,
60_Times,
64_Times
Unit:480ms
Actual Value
Range:
1920~30720
Default Value:
52_Times
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202
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AFRSAMULF
RM
BSC6900
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Numb
er of SACCH
multiframes
during an AMR
full rate call. See
the description
of "SACCH
Multi-Frames"
in "SET
GCELLCCBAS
IC".
GUI Value
Range:0~63
Unit:480ms
Actual Value
Range:0~30240
Default Value:
48
AFRSAMULF
RM
BSC6910
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Numb
er of SACCH
multiframes
during an AMR
full rate call. See
the description
of "SACCH
Multi-Frames"
in "SET
GCELLCCBAS
IC".
GUI Value
Range:0~63
Unit:480ms
Actual Value
Range:0~30240
Default Value:
48
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203
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AHRDSBLCN
T
BSC6900
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Count
er for radio link
failures during
an AMR half
rate call. See the
description of
"Radio Link
Timeout" in
"SET
GCELLCCBAS
IC".
GUI Value
Range:4_Times,
8_Times,
12_Times,
16_Times,
20_Times,
24_Times,
28_Times,
32_Times,
36_Times,
40_Times,
44_Times,
48_Times,
52_Times,
56_Times,
60_Times,
64_Times
Unit:480ms
Actual Value
Range:
1920~30720
Default Value:
36_Times
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204
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AHRDSBLCN
T
BSC6910
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Count
er for radio link
failures during
an AMR half
rate call. See the
description of
"Radio Link
Timeout" in
"SET
GCELLCCBAS
IC".
GUI Value
Range:4_Times,
8_Times,
12_Times,
16_Times,
20_Times,
24_Times,
28_Times,
32_Times,
36_Times,
40_Times,
44_Times,
48_Times,
52_Times,
56_Times,
60_Times,
64_Times
Unit:480ms
Actual Value
Range:
1920~30720
Default Value:
36_Times
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205
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
AHRSAMULF
RM
BSC6900
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Numb
er of SACCH
multiframes
during an AMR
half rate call.
See the
description of
"SACCH MultiFrames" in "SET
GCELLCCBAS
IC".
GUI Value
Range:0~63
Unit:480ms
Actual Value
Range:0~30240
Default Value:
32
AHRSAMULF
RM
BSC6910
SET
GCELLCCBA
SIC
GBFD-115505
AMR Radio
Link Timer
Meaning:Numb
er of SACCH
multiframes
during an AMR
half rate call.
See the
description of
"SACCH MultiFrames" in "SET
GCELLCCBAS
IC".
GUI Value
Range:0~63
Unit:480ms
Actual Value
Range:0~30240
Default Value:
32
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206
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
RLT
BSC6900
SET
GCELLCCBA
SIC
GBFD-111004
Radio Dedicated
Channel
Management
Meaning:Time
for
disconnecting a
call when the
MS fails to
decode the
SACCH. Once a
dedicated
channel is
assigned to the
MS, the counter
S is enabled and
the initial value
is set to this
parameter value.
Each time an
SACCH
message is not
decoded, the
counter S
decreases by 1.
Each time an
SACCH
message is
correctly
decoded, the
counter S
increases by 2.
When the
counter S is
equal to 0, the
downlink radio
link is
considered as
failed.
Therefore, when
the voice or data
quality is
degraded to an
unacceptable
situation and it
cannot be
improved
through power
control or
channel
handover, the
connection is to
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
be reestablished or
released.
GUI Value
Range:4_Times,
8_Times,
12_Times,
16_Times,
20_Times,
24_Times,
28_Times,
32_Times,
36_Times,
40_Times,
44_Times,
48_Times,
52_Times,
56_Times,
60_Times,
64_Times
Unit:480ms
Actual Value
Range:
1920~30720
Default Value:
36_Times
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208
GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
RLT
BSC6910
SET
GCELLCCBA
SIC
GBFD-111004
Radio Dedicated
Channel
Management
Meaning:Time
for
disconnecting a
call when the
MS fails to
decode the
SACCH. Once a
dedicated
channel is
assigned to the
MS, the counter
S is enabled and
the initial value
is set to this
parameter value.
Each time an
SACCH
message is not
decoded, the
counter S
decreases by 1.
Each time an
SACCH
message is
correctly
decoded, the
counter S
increases by 2.
When the
counter S is
equal to 0, the
downlink radio
link is
considered as
failed.
Therefore, when
the voice or data
quality is
degraded to an
unacceptable
situation and it
cannot be
improved
through power
control or
channel
handover, the
connection is to
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GSM BSS
AMR Feature Parameter Description
Parameter ID
NE
7 Parameters
MML
Command
Feature ID
Feature Name
Description
be reestablished or
released.
GUI Value
Range:4_Times,
8_Times,
12_Times,
16_Times,
20_Times,
24_Times,
28_Times,
32_Times,
36_Times,
40_Times,
44_Times,
48_Times,
52_Times,
56_Times,
60_Times,
64_Times
Unit:480ms
Actual Value
Range:
1920~30720
Default Value:
36_Times
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GSM BSS
AMR Feature Parameter Description
7 Parameters
Parameter ID
NE
MML
Command
Feature ID
Feature Name
Description
TCHBUSYTH
RES
BSC6900
SET
GCELLCHM
GAD
None
None
Meaning:If the
current channel
seizure ratio
reaches or
exceeds this
value, the halfrate TCH is
assigned
preferentially;
otherwise, the
full-rate TCH is
assigned
preferentially.
GUI Value
Range:0~100
Unit:%
Actual Value
Range:0~100
Default Value:
60
TCHBUSYTH
RES
BSC6910
SET
GCELLCHM
GAD
None
None
Meaning:If the
current channel
seizure ratio
reaches or
exceeds this
value, the halfrate TCH is
assigned
preferentially;
otherwise, the
full-rate TCH is
assigned
preferentially.
GUI Value
Range:0~100
Unit:%
Actual Value
Range:0~100
Default Value:
60
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GSM BSS
AMR Feature Parameter Description
8 Counters
8
Counters
Table 8-1 Counter description
Counter ID
Counter Name
Counter
Description
NE
Feature ID
Feature Name
1278076514
CELL.ASS.CM
P.SPEECH.VE
R.
3.DIRECT.RET
RY.DR.TCHF
A3111A:Cell
Assignment
Complete Times
of Speech
Version 3
(Direct Retry)
(TCHF)
BSC6900
GBFD-115501
AMR FR
1278076515
CELL.ASS.CM
P.SPEECH.VE
R.
3.DIRECT.RET
RY.DR.TCHH
A3112A:Cell
Assignment
Complete Times
of Speech
Version 3
(Direct Retry)
(TCHH)
BSC6900
GBFD-115502
AMR HR
1278077528
CELL.INTRAC
ELL.HO.DETE
CT.SPEECH.V
ER.3.TCHF
H3099X:BSC
Intra-cell
Handover
Detection Times
(AMR) (TCHF)
BSC6900
GBFD-115501
AMR FR
1278077529
CELL.INTRAC
ELL.HO.DETE
CT.SPEECH.V
ER.3.TCHH
H3099Y:BSC
Intra-cell
Handover
Detection Times
(AMR) (TCHH)
BSC6900
GBFD-115502
AMR HR
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GSM BSS
AMR Feature Parameter Description
8 Counters
Counter ID
Counter Name
Counter
Description
NE
Feature ID
Feature Name
1278080483
CELL.BSCTO
BSC.INTO.CE
LL.HO.DETEC
T.SPEECH.VE
R.3.TCHF
H3881A:Incomi
ng External
Inter-Cell
Handover
Detection
Messages
Received by
BSC (AMR)
(TCHF)
BSC6900
GBFD-115501
AMR FR
1278080484
CELL.BSCTO
BSC.INTO.CE
LL.HO.DETEC
T.SPEECH.VE
R.3.TCHH
H3882A:Incomi
ng External
Inter-Cell
Handover
Detection
Messages
Received by
BSC (AMR)
(TCHH)
BSC6900
GBFD-115502
AMR HR
1278095417
CELL.CALL.D
ROP.AMRFR.C
All.FAIL
M0121A:Full
Rate AMR
Service Channel
Call Drop Times
BSC6900
GBFD-115501
AMR FR
1278095418
CELL.CALL.D
ROP.AMRHR.
CAll.FAIL
M0121B:Half
Rate AMR
Service Channel
Call Drop Times
BSC6900
GBFD-115502
AMR HR
1278095421
CELL.CALL.S
PEECH.VER.
3.REQ.TCHF
A0401C:Suppor
ts Call Times of
Full Rate
Speech Version
3
BSC6900
GBFD-110501
Call Control
GBFD-115501
AMR FR
1278095424
CELL.CALL.S
PEECH.VER.
3.REQ.TCHH
A0402C:Suppor
ts Call Times of
Half Rate
Speech Version
3
BSC6900
GBFD-115502
AMR HR
1278095433
CELL.CALL.O
CCUPY.SUCC.
TCHF.AMR
A0409I:Full
Rate AMR TCH
Successful Call
Occupancy
Times (Service
Channel)
BSC6900
GBFD-115501
AMR FR
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GSM BSS
AMR Feature Parameter Description
8 Counters
Counter ID
Counter Name
Counter
Description
NE
Feature ID
Feature Name
1278095434
CELL.CALL.H
O.OCCUPY.SU
CC.TCHF.AM
R
A0409J:Full
Rate AMR TCH
Successful
Handover
Occupancy
Times (Service
Channel)
BSC6900
GBFD-115501
AMR FR
1278095436
CELL.CALL.O
CCUPY.SUCC.
TCHH.AMR
A0409L:Half
Rate AMR TCH
Successful Call
Occupancy
Times (Service
Channel)
BSC6900
GBFD-115502
AMR HR
1278095437
CELL.CALL.H
O.OCCUPY.SU
CC.TCHH.AM
R
A0409M:Half
Rate AMR TCH
Successful
Handover
Occupancy
Times (Service
Channel)
BSC6900
GBFD-115502
AMR HR
1278095438
CELL.CALL.D
ROP.CALL.RA
TE.TCHF.AMR
A0409N:Full
Rate AMR Call
Drop Rate
BSC6900
GBFD-115501
AMR FR
1278095439
CELL.CALL.D
ROP.CALL.RA
TE.TCHH.AM
R
A0409P:Half
Rate AMR Call
Drop Rate
BSC6900
GBFD-115502
AMR HR
1278271449
CELL.AMR.M
S.PWR.LEV.A
VE
AS3240A:Aver
age MS Power
Level of AMR
Call
BSC6900
GBFD-115503
GBFD-115502
AMR Power
Control
GBFD-115501
AMR HR
AS3241A:Aver
age BTS Power
Level of AMR
Call
BSC6900
AR3551C:Traff
ic Volume on
AMR TCHFs
BSC6900
1278271450
1278473476
CELL.AMR.BT
S.PWR.LEV.A
VE
CELL.CHAN.B
USY.NUM.TC
HF.AMR.TRAF
.AVE
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AMR FR
GBFD-115503
GBFD-115502
AMR Power
Control
GBFD-115501
AMR HR
AMR FR
GBFD-115501
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AMR FR
214
GSM BSS
AMR Feature Parameter Description
8 Counters
Counter ID
Counter Name
Counter
Description
NE
Feature ID
Feature Name
1278473477
CELL.CHAN.B
USY.NUM.TC
HH.AMR.TRA
F.AVE
AR3552C:Traff
ic Volume on
AMR TCHHs
BSC6900
GBFD-115502
AMR HR
1282423819
CELL.CHAN.B
USY.NUM.TC
HF.AMR.TRAF
.OVERLAY.A
VE
AR3559C:Traff
ic Volume on
AMR TCHFs
(Overlaid
Subcell)
BSC6900
GBFD-115501
AMR FR
GBFD-113201
Concentric Cell
CELL.CHAN.B
USY.NUM.TC
HH.AMR.TRA
F.OVERLAY.A
VE
AR3560C:Traff
ic Volume on
AMR TCHHs
(Overlaid
Subcell)
BSC6900
GBFD-115502
AMR HR
GBFD-113201
Concentric Cell
1278076514
CELL.ASS.CM
P.SPEECH.VE
R.
3.DIRECT.RET
RY.DR.TCHF
A3111A:Cell
Assignment
Complete Times
of Speech
Version 3
(Direct Retry)
(TCHF)
BSC6910
GBFD-115501
AMR FR
1278076515
CELL.ASS.CM
P.SPEECH.VE
R.
3.DIRECT.RET
RY.DR.TCHH
A3112A:Cell
Assignment
Complete Times
of Speech
Version 3
(Direct Retry)
(TCHH)
BSC6910
GBFD-115502
AMR HR
1278077528
CELL.INTRAC
ELL.HO.DETE
CT.SPEECH.V
ER.3.TCHF
H3099X:BSC
Intra-cell
Handover
Detection Times
(AMR) (TCHF)
BSC6910
GBFD-115501
AMR FR
1278077529
CELL.INTRAC
ELL.HO.DETE
CT.SPEECH.V
ER.3.TCHH
H3099Y:BSC
Intra-cell
Handover
Detection Times
(AMR) (TCHH)
BSC6910
GBFD-115502
AMR HR
1282423822
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GSM BSS
AMR Feature Parameter Description
8 Counters
Counter ID
Counter Name
Counter
Description
NE
Feature ID
Feature Name
1278080483
CELL.BSCTO
BSC.INTO.CE
LL.HO.DETEC
T.SPEECH.VE
R.3.TCHF
H3881A:Incomi
ng External
Inter-Cell
Handover
Detection
Messages
Received by
BSC (AMR)
(TCHF)
BSC6910
GBFD-115501
AMR FR
1278080484
CELL.BSCTO
BSC.INTO.CE
LL.HO.DETEC
T.SPEECH.VE
R.3.TCHH
H3882A:Incomi
ng External
Inter-Cell
Handover
Detection
Messages
Received by
BSC (AMR)
(TCHH)
BSC6910
GBFD-115502
AMR HR
1278095417
CELL.CALL.D
ROP.AMRFR.C
All.FAIL
M0121A:Full
Rate AMR
Service Channel
Call Drop Times
BSC6910
GBFD-115501
AMR FR
1278095418
CELL.CALL.D
ROP.AMRHR.
CAll.FAIL
M0121B:Half
Rate AMR
Service Channel
Call Drop Times
BSC6910
GBFD-115502
AMR HR
1278095421
CELL.CALL.S
PEECH.VER.
3.REQ.TCHF
A0401C:Suppor
ts Call Times of
Full Rate
Speech Version
3
BSC6910
GBFD-110501
Call Control
GBFD-115501
AMR FR
1278095424
CELL.CALL.S
PEECH.VER.
3.REQ.TCHH
A0402C:Suppor
ts Call Times of
Half Rate
Speech Version
3
BSC6910
GBFD-115502
AMR HR
1278095433
CELL.CALL.O
CCUPY.SUCC.
TCHF.AMR
A0409I:Full
Rate AMR TCH
Successful Call
Occupancy
Times (Service
Channel)
BSC6910
GBFD-115501
AMR FR
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GSM BSS
AMR Feature Parameter Description
8 Counters
Counter ID
Counter Name
Counter
Description
NE
Feature ID
Feature Name
1278095434
CELL.CALL.H
O.OCCUPY.SU
CC.TCHF.AM
R
A0409J:Full
Rate AMR TCH
Successful
Handover
Occupancy
Times (Service
Channel)
BSC6910
GBFD-115501
AMR FR
1278095436
CELL.CALL.O
CCUPY.SUCC.
TCHH.AMR
A0409L:Half
Rate AMR TCH
Successful Call
Occupancy
Times (Service
Channel)
BSC6910
GBFD-115502
AMR HR
1278095437
CELL.CALL.H
O.OCCUPY.SU
CC.TCHH.AM
R
A0409M:Half
Rate AMR TCH
Successful
Handover
Occupancy
Times (Service
Channel)
BSC6910
GBFD-115502
AMR HR
1278095438
CELL.CALL.D
ROP.CALL.RA
TE.TCHF.AMR
A0409N:Full
Rate AMR Call
Drop Rate
BSC6910
GBFD-115501
AMR FR
1278095439
CELL.CALL.D
ROP.CALL.RA
TE.TCHH.AM
R
A0409P:Half
Rate AMR Call
Drop Rate
BSC6910
GBFD-115502
AMR HR
1278271449
CELL.AMR.M
S.PWR.LEV.A
VE
AS3240A:Aver
age MS Power
Level of AMR
Call
BSC6910
GBFD-115503
GBFD-115502
AMR Power
Control
GBFD-115501
AMR HR
AS3241A:Aver
age BTS Power
Level of AMR
Call
BSC6910
AR3551C:Traff
ic Volume on
AMR TCHFs
BSC6910
1278271450
1278473476
CELL.AMR.BT
S.PWR.LEV.A
VE
CELL.CHAN.B
USY.NUM.TC
HF.AMR.TRAF
.AVE
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AMR FR
GBFD-115503
GBFD-115502
AMR Power
Control
GBFD-115501
AMR HR
AMR FR
GBFD-115501
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AMR FR
217
GSM BSS
AMR Feature Parameter Description
8 Counters
Counter ID
Counter Name
Counter
Description
NE
Feature ID
Feature Name
1278473477
CELL.CHAN.B
USY.NUM.TC
HH.AMR.TRA
F.AVE
AR3552C:Traff
ic Volume on
AMR TCHHs
BSC6910
GBFD-115502
AMR HR
1282423819
CELL.CHAN.B
USY.NUM.TC
HF.AMR.TRAF
.OVERLAY.A
VE
AR3559C:Traff
ic Volume on
AMR TCHFs
(Overlaid
Subcell)
BSC6910
GBFD-115501
AMR FR
GBFD-113201
Concentric Cell
CELL.CHAN.B
USY.NUM.TC
HH.AMR.TRA
F.OVERLAY.A
VE
AR3560C:Traff
ic Volume on
AMR TCHHs
(Overlaid
Subcell)
BSC6910
GBFD-115502
AMR HR
GBFD-113201
Concentric Cell
1282423822
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GSM BSS
AMR Feature Parameter Description
9 Glossary
9
Glossary
For the acronyms, abbreviations, terms, and definitions, see Glossary.
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GSM BSS
AMR Feature Parameter Description
10 Reference Documents
10
Reference Documents
1.
GSM 05.03: "Digital cellular telecommunications system (Phase 2+); Channel coding"
2.
GSM 05.09: "Digital cellular telecommunications system (Phase 2+); Link Adaptation"
3.
GSM 04.08: "Digital cellular telecommunications system (Phase 2+); Mobile radio
interface layer 3 specification"
4.
GSM 06.90: "Digital cellular telecommunications system (Phase 2+); Adaptive Multi-Rate
(AMR) speech transcoding "
5.
GSM 06.91: "Digital cellular telecommunications system (Phase 2+); Substitution and
muting of lost frames for Adaptive Multi Rate (AMR) speech traffic channels "
6.
GSM 06.92: "Digital cellular telecommunications system (Phase 2+); Comfort noise
aspects for Adaptive Multi-Rate (AMR) speech traffic channels "
7.
GSM 06.93: "Digital cellular telecommunications system (Phase 2+); Discontinuous
transmission (DTX) for Adaptive Multi Rate (AMR) speech traffic channels "
8.
GSM 06.94: "Digital cellular telecommunications system (Phase 2+); Voice Activity
Detection (VAD) for Adaptive Multi-Rate speech traffic channels "
9.
GSM 08.08: "Digital cellular telecommunications system (Phase 2+); Mobile-services
Switching Centre - Base Station System (MSC - BSS) interface; Layer 3 specification "
10. GSM 08.58: "Digital cellular telecommunications system (Phase 2+); Base Station
Controller - Base Transceiver Station (BSC - BTS) interface; Layer 3 specification "
11. GSM 08.60: "Digital cellular telecommunications system (Phase 2+); In-band control of
remote transcoders and rate adaptors for full rate traffic channels "
12. GSM 08.61: "Digital cellular telecommunications system (Phase 2+); In-band control of
remote transcoders and rate adaptors for half rate traffic channels "
13. Power Control Feature Parameter Description
14. Discontinuous Transmission and Discontinuous Reception Feature Parameter
Description
15. TFO Feature Parameter Description
16. Handover Feature Parameter Description
17. License Management Feature Parameter Description
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