Rev A
Basic Parameters, Counters and KPIs
Basic Parameters, Counters and KPIs
Contents
1
INTRODUCTION........................................................................................................................................................... 3
2
PARAMETERS............................................................................................................................................................... 3
2.1
POWER CONTROL.................................................................................................................................................... 3
2.2
HANDOVER .............................................................................................................................................................. 5
2.3
CHANNEL SWITCHING ............................................................................................................................................. 7
2.4
CAPACITY MANAGEMENT ....................................................................................................................................... 8
2.4.1 Admission Control ............................................................................................................................................... 8
2.4.2 Congestion Control............................................................................................................................................ 11
2.5
HSDPA .................................................................................................................................................................. 13
2.6
IDLE MODE ............................................................................................................................................................ 15
3
COUNTERS .................................................................................................................................................................. 16
3.1
3.2
3.3
3.4
3.5
3.6
4
ACCESSIBILITY ...................................................................................................................................................... 16
RETAINABILITY ....................................................................................................................................................... 17
INTEGRITY .............................................................................................................................................................. 18
MOBILITY ............................................................................................................................................................... 19
AVAILABILITY ........................................................................................................................................................ 20
SYSTEM UTILIZATION ............................................................................................................................................. 21
KEY PERFORMANCE INDICATORS (KPIS) ........................................................................................................ 22
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
CS VOICE ACCESSIBILITY ....................................................................................................................................... 24
CS VIDEO ACCESSIBILITY ....................................................................................................................................... 24
CS VOICE CALL SETUP TIME .................................................................................................................................. 25
INTER-RADIO ACCESS TECHNOLOGY CELL CHANGE KPIS ..................................................................................... 25
HS IRAT CELL CHANGE SUCCESS RATE ................................................................................................................ 26
PS ACCESSIBILITY.................................................................................................................................................. 26
CS VOICE DROP CALL RATE (DCR/DOR).............................................................................................................. 27
CS VIDEO DROP CALL RATE (DCR/DOR) ............................................................................................................. 28
PS SESSION DROP RATE (SDR).............................................................................................................................. 29
CS VOICE QUALITY DL BLER ............................................................................................................................... 30
CS VIDEO QUALITY BLER ..................................................................................................................................... 30
PS DL/UL CURRENT APPLICATION THROUGHPUT (KBPS) ...................................................................................... 31
HS DL/UL CURRENT APPLICATION THROUGHPUT (KBPS)...................................................................................... 32
PING SUCCESS RATE ............................................................................................................................................... 33
Rev A 2007-11-01
 Ericsson AB 2007
2 (33)
Basic Parameters, Counters and KPIs
1
INTRODUCTION
This document presents information about basic KPI’s (Key Performance Indicators),
RNC Parameters and some Counters for WCDMA radio network revision P5 of
Ericsson implementation, and intends to facilitate and reduce the time spent for
searching this information through databases and serve as a quick guide for learners
and beginners.
Each part has a little introduction and then lists the information, with a little
description and formulas or default values.
2
Parameters
The parameters in the WCDMA RAN serve, basically, to provide control and set the
way the radio network works, such as enabling RABs, setting the time triggers and
thresholds, setting the power control and availability of channels.
Be aware that each network can have a different setting, and the default values are
not necessarily the best or the recommended setting by Ericsson.
2.1
Power Control
Parameter
Default Value
Description
primaryCpichPower
270 (27 dBm)
Power to be used for transmitting the PCPICH.
bchPower
-31 (-3.1 dB)
BCH power is the power to be used for transmitting on the BCH,
relative to the primaryCpichPower value.
primarySchPower
-18 (-1.8 dB)
Primary SCH power, relative to the primaryCpichPower value.
Old name: schPower1
secondarySchPower
-35 (-3.5 dB)
Secondary SCH power, relative to the primaryCpichPower value.
Old name: schPower2
aichPower
-6 (dB)
AICH power, to be used for transmitting on AICH, relative to the
primaryCpichPower value.
The value range is set in a short term to cover both the RRC and
NBAP spec.
Rev A 2007-11-01
 Ericsson AB 2007
3 (33)
Basic Parameters, Counters and KPIs
maxFach1Power
18 (1.8 dB)
Maximum power, to be used for transmitting the first FACH
channel, relative the primaryCpichPower value. The first FACH is
used for logical channels BCCH, CCCH and DCCH, control
signaling.
pchPower
-4 (-0.4 dB)
Maximum power to be used for transmitting the PCH, relative to
the primaryCpichPower value.
pichPower
-7 (dB)
PICH power is the power to be used for transmitting on the
physical channel carrying the paging indicators, relative to the
primaryCpichPower value.
constantValueCprach
-27 (dB)
Constant value used by the UE to calculate the initial power on
PRACH according to the Open loop power control procedure.
powerOffsetP0
3 (dB)
Power step when no acquisition indicator is received.
powerOffsetPpm
-4 (dB)
Power step between preamble and the message part.
preambleRetransMax
8 (# preambles)
Maximum number of preambles in one preamble ramping cycle.
maxPreambleCycle
4 (# cycles)
Maximum number of preamble ramping cycle.
dlInitSirTarget
41 (4.1 dB)
Required DL Initial SIR target for all RABs.
cBackoff
0 (dB)
The purpose of this constant is to back off the open loop power
control estimate to a conservative starting point.
ecNoPcpichDefault
-16 (dB)
The default value to be used in power calculations for Ec divided
by No.
initShoPowerParam
0 (dB)
Correction of initial downlink power at soft handover RL setup.
dlPcMethod
3 (Balancing)
Selects the DL power control method at establishment of the
radio connection.
ulInitSirTargetHigh
82 (8.2 dB)
Required UL Initial SIR target for the RAB having minimum SF
equal to or lower than 16.
ulInitSirTargetLow
49 (4.9 dB)
Required UL Initial SIR target for the RAB having minimum SF
equal to or higher than 32.
ulInitSirTargetSrb
57 (5.7 dB)
Required UL Initial SIR target for stand alone SRB.
cPO
0 (dB)
A constant parameter to set the UL DPCCH power offset to a
conservative level.
ulOuterLoopRegulator
Jump
Regulation type for uplink outer loop power control algorithm.
sirMin
-82 (-8.2 dB)
The minimum allowed SIR target.
sirMax
173 (17.3)
The maximum allowed SIR target.
Rev A 2007-11-01
 Ericsson AB 2007
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Basic Parameters, Counters and KPIs
2.2
Handover
Parameter
Default Value
Description
reportingRange1a
6 (3 dB)
Used by UE functions for intra-frequency measurement
reporting (in CELL_DCH). Threshold used for additionwindow in evaluation criteria for event type 1a.
reportingRange1b
10 (5 dB)
Used by UE functions for intra-frequency measurement
reporting (in CELL_DCH). Threshold used for dropwindow
in evaluation criteria for event 1b.
timeToTrigger1a
9 (200 ms)
Time in milliseconds (ms) between detection of event 1a
and sending of the measurement report.
Used by UE functions for intra-frequency measurement
reporting in CELL_DCH
timeToTrigger1b
9 (200 ms)
Time in milliseconds (ms) between detection of event 1b
and sending of the measurement report.
Used by UE functions for intra-frequency measurement
reporting in CELL_DCH
timeToTrigger1c
9 (200 ms)
Time in milliseconds (ms) between detection of event 1c
and sending of the measurement report.
Used by UE functions for intra-frequency measurement
reporting in CELL_DCH.
timeToTrigger1d
14 (2560 ms)
Time in milliseconds (ms) between detection of event 1d
and sending of the measurement report.
hysteresis1a
0 (dB)
hysteresis1b
0 (dB)
Hysteresis used in addition-window in evaluation criteria
for event 1a to avoid ping pong effects. Used by UE
functions for intra-frequency measurement reporting in
CELL_DCH.
Hysteresis used in the drop window in evaluation criteria
for event type 1b. Used by UE functions for intrafrequency measurement reporting in CELL_DCH.
hysteresis1c
2 (1 dB)
hysteresis1d
15 (7.5 dB)
Rev A 2007-11-01
Used by UE functions for intra-frequency measurement
reporting (in CELL_DCH). Hysteresis used in replacement
threshold in evaluation criteria for event 1c to avoid ping
pong effects.
Used by UE functions for intra-frequency measurement
reporting (in CELL_DCH). Hysteresis used in dropwindow
in evaluation criteria for event type 1d.
 Ericsson AB 2007
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Basic Parameters, Counters and KPIs
individualOffset
0 (dB)
Used in UE function event-reporting. This offset is added
to the measured quantity before the UE evaluates if an
event has occurred.
The parameter is used both for signaling over RRC and
RNSAP.
maxActiveSet
3
Maximum number of cells in active set.
This attribute also controls the reporting deactivation
threshold, used to control intra-frequency measurements
(event 1a).
Reporting deactivation threshold = maxActiveSet-1.
The attribute also controls the replacement activation
threshold, used to control intra-frequency measurements
(event 1c).
Replacement activation threshold = maxActiveSet.
usedFreqThresh2dEcno
-11 (dB)
Threshold for event 2d for the used frequency when the
measurement quantity is Ec/No.
usedFreqThresh2dRscp
-103 (dBm)
Threshold for event 2d for the used frequency when the
measurement quantity is RSCP.
usedFreqRelThresh2fEcno
2 (dB)
Relative threshold for event 2f vs. event 2d for the used
frequency when the measurement quantity is Ec/No.
usedFreqRelThresh2fRscp
2 (dB)
Relative threshold for event 2f vs. event 2d for the used
frequency when the measurement quantity is RSCP.
timeToTrigger3a
6 (100 ms)
Time in milliseconds (ms) between detection of event 3a
and sending of the measurement report.
hysteresis2d
0 (dB)
Hysteresis for event 2d.
hysteresis2f
0 (dB)
Hysteresis for event 2f.
hysteresis3a
0 (dB)
Hysteresis for event 3a.
gsmThresh3a
-104 (dBm)
Threshold for event 3a for GSM. Range is valid for GSM
carrier RSSI.
Rev A 2007-11-01
 Ericsson AB 2007
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Basic Parameters, Counters and KPIs
2.3
Channel Switching
Parameter
Default Value
Description
ulRlcBufUpswitch
256 (bytes)
Uplink threshold for channel switching from FACH/RACH
to dedicated channel.
dlRlcBufUpswitch
500 (bytes)
Downlink threshold for channel switching from
FACH/RACH to dedicated channel.
upswitchPwrMargin
6 (3 dB)
Upswitch (DCH to DCH) power margin.
upswitchTimer
10 (1 s)
Time during which the DL throughput should be higher
than threshold, defined by bandwidthMargin, before an
upswitch is issued.
coverageTimer
10 (1 s)
Time during which the power is allowed to be high before
a downswitch (DCH to DCH) is issued.
downswitchPwrMargin
2 (1 dB)
Margin, in relation to maximum allowed code power,
which indicates a high power usage.
reportHysteresis
6 (3 dB)
Reporting hysteresis for the code power measurements in
the node B.
downswitchTimerThreshold
0 (kbps)
Timer threshold to achieve hysteresis for channel
switching from dedicated channel to FACH/RACH
This value should always be greater than or equal to the
value of downswitchThreshold.
downswitchThreshold
0 (kbps)
Threshold for channel switching from dedicated channel to
FACH/RACH.
This value should always be less than or equal to the
value of downswitchTimerThreshold.
downswitchTimer
10 (s)
Timer for channel switching from dedicated channel to
FACH/RACH
downswitchTimerUp
60 (30 s)
Time, not including data transmission, after which the
packet part of the multi RAB "UDI+8/8" (Cs Data 64 kbps
+ Packet 8kbps) is released.
If this parameter is set to 0, the packet part of the
connection will not be released due to PS inactivity.
Rev A 2007-11-01
 Ericsson AB 2007
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Basic Parameters, Counters and KPIs
ulRlcBufUpswitchMrab
8 (kbps)
Uplink threshold of the RLC buffer load, used to issue an
upswitch request (from "Speech + PS 0/0" to "Speech +
PS 64/64").
dlRlcBufUpswitchMrab
0 (kbps)
Downlink threshold of the RLC buffer load, used to issue
an upswitch request (from "Speech + PS 0/0" to "Speech
+ PS 64/64").
0 is used to indicate that the dlRlcBufUpswitchMrab is not
in use.
inactivityTimer
30 (s)
Time not including data transmission, after which UTRAN
will send IU RELEASE REQUEST message to the CN for
UEs in state CELL_FACH.
hsdschInactivityTimer
10 (s)
Timer for sending of IU RELEASE REQUEST message to
the CN for UE connections in RAB state PS Interactive
64/HS - HS-DSCH.
The value 7200 seconds is used only for testing purposes.
2.4
Capacity Management
2.4.1
Admission Control
Parameter
Default Value
Description
dlCodeAdm
70 (%)
Admission limit used for admission based on DL
channelization code tree usage (percentage of the tree
in use).
The following expression MUST be true:
dlCodeAdm >= beMarginDlCode * 5
beMarginDlCode
2 (10%)
Admission margin for DL code utilization in DL (nonhandover, non-compressed mode RLs only).
The following expression MUST be true:
beMarginDlCode * 5 <= dlCodeAdm
sf8Adm
8
Admission policy for admission on the number of
Spreading Factor = 8 (traffic class=non-guaranteed,
setup type=<all>) simultaneous connections in a cell in
DL (SF histogram).
Default setting is to disable the admission policy.
Rev A 2007-11-01
 Ericsson AB 2007
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Basic Parameters, Counters and KPIs
sf16Adm
16
Admission policy for admission on the number of
Spreading Factor = 16 (traffic class=non-guaranteed,
setup type=<all>) simultaneous connections in a cell in
DL (SF histogram).
Default setting is to disable the admission policy.
sf32Adm
32
Admission policy for admission on the number of
Spreading Factor = 32 (traffic class=non-guaranteed,
setup type=<all>) simultaneous connections in a cell in
DL (SF histogram).
Default setting is to disable the admission policy.
compModeAdm
15 (# RL)
Admission limit for #RL in compressed mode in a cell
sf16gAdm
16
Maximum number of radio links with Spreading Factor
(SF) =16 in DL for which new guaranteed admission
requests will continue to be allowed. Reaching or
exceeding this number of radio links (any service class)
using DL SF = 16 will block setup/adding any more
guaranteed service class radio links requiring additional
DL SF=16 for this cell.
16 means that no blocking of DL SF=16 requests will
occur.
sf4AdmUl
0
Admission limit (traffic class = nonguaranteed/guaranteed-hs, admission class = handover
or other) for number of radio links with UL SF = 4.
pwrAdm
75 (%)
Admission limit for admission on DL cell carrier power.
The following expressions MUST be true:
pwrAdm + pwrAdmOffset + pwrOffset <= 100%
pwrAdm >= beMarginDlPwr
pwrAdmOffset
10 (%)
Relative admission limit on DL cell carrier power.
The following expression MUST be true:
pwrAdm+pwrAdmOffset+pwrOffset <= 100%
beMarginDlPwr
10 (%)
Admission margin for DL power usage (non-guaranteed
requests)
The following expression MUST be true:
beMarginDlPwr <= pwrAdm
maximumTransmissionPower
370 (37 dBm)
Maximum transmission power is maximum power for all
downlink channels added together, that is allowed to be
used simultaneously in a cell
minPwrMax
0 (dB)
Minimum relative power for maximum power mapping.
minPwrRl <= minPwrMax.
minPwrMax <= interPwrMax <= maxPwrMax
Rev A 2007-11-01
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Basic Parameters, Counters and KPIs
interPwrMax
38 (3.8 dB)
Intermediate relative power for maximum power
mapping.
minPwrMax <= interPwrMax <= maxPwrMax
maxPwrMax
48 (4.8 dB)
Maximum relative power for maximum power mapping.
minPwrMax <= interPwrMax <= maxPwrMax
minimumRate
1590 (15.9 kbps)
Minimum rate for maximum power mapping.
minimumRate <= interRate <= maxRate.
interRate
7760 (77.6 kbps)
Intermediate rate for maximum power mapping.
minimumRate <= interRate <= maxRate
maxRate
40690 (406.9
kbps)
Maximum rate for maximum power mapping.
minimumRate <= interRate <= maxRate
beMarginAseUl
20
Relative admission limit for admission on ASE for nonguaranteed bitrate calls (traffic class 'background' or
'interactive') in UL.
The following expression MUST be true:
beMarginAseUl <= aseUlAdm
aseUlAdm
160
Admission limit for admission on ASE in UL.
The following expression MUST be true:
aseUlAdm >= beMarginAseUl
aseUlAdmOffset
40
Relative admission limit for admission on ASE in UL.
beMarginAseDl
100
Relative admission limit for admission on ASE for nonguaranteed bitrate calls (traffic class 'background' or
'interactive') in DL.
The following expression MUST be true:
beMarginAseDl <= aseDlAdm
aseDlAdm
240
Admission limit for admission on max capacity (ASE
level) in DL.
The following expression MUST be true:
aseDlAdm >= beMarginAseDl
Rev A 2007-11-01
 Ericsson AB 2007
10 (33)
Basic Parameters, Counters and KPIs
ulHwAdm
70 (%)
Admission limit on RBS UL HW resource utilisation
applicable to non-handover guaranteed admission
requests. This parameter is also used together with
beMarginUlHw for non-handover non-guaranteed
admission requests.
the UL HW admission policy.
ulHwAdm >= beMarginUlHw
dlHwAdm
70 (%)
Admission limit on RBS DL HW resource utilisation
applicable to non-handover guaranteed admission
requests. This parameter is also used together with
beMarginDlHw for non-handover non-guaranteed
admission requests.
dlHwAdm >= beMarginDlHw
2.4.2
Congestion Control
Parameter
Default Value
Description
pwrAdm
75 (%)
Admission limit for admission on DL cell carrier power.
The following expressions MUST be true:
pwrAdm + pwrAdmOffset + pwrOffset <= 100%
pwrAdm >= beMarginDlPwr
pwrAdmOffset
10 (%)
Relative admission limit on DL cell carrier power.
The following expression MUST be true:
pwrAdm+pwrAdmOffset+pwrOffset <= 100%
pwrOffset
5 (%)
Used by Congestion Control.
The following expression MUST be true:
pwrAdm+pwrAdmOffset+pwrOffset <= 100%
pwrHyst
Rev A 2007-11-01
300 (ms)
Hysterese time setting for detection of congestion in the
DL transmitted carrier power.
Default setting is to avoid false DL cell congestion
detection.
 Ericsson AB 2007
11 (33)
Basic Parameters, Counters and KPIs
iFCong
621 (-49.9 dBm)
Threshold at which UL congestion is detected in the
cell.
Default setting is to disable UL congestion
measurements, in order to prevent problems during
upgrading.
The following expression MUST be true:
IFCong + IFOffset <= 621
iFOffset
0 (dB)
Offset that, together with parameter iFCong, determines
the RTWP measurement level at which UL congestion
is to be resolved.
Default setting is to disable UL congestion
measurements, in order to prevent problems during
upgrading.
The following expression MUST be true:
IFCong + IFOffset <= 621
iFHyst
6000 (ms)
Hysterese time setting for detection of congestion in the
UL RTWP in a cell.
Default setting is to disable UL congestion
measurements, in order to prevent problems during
upgrading
releaseAseDl
1
Amount of ASE in DL to be released with each periodic
congestion resolve action targeting guaranteed traffic
class connections in a cell.
Default setting is a reference case
releaseAseDlNg
3
Amount of ASE in DL to be released with each periodic
congestion resolve action targeting non-guaranteed
traffic class connections in a cell.
Default setting is a reference case setting
tmCongAction
2000 (ms)
Interval between periodic congestion resolve actions on
guaranteed traffic class connections in a cell.
Default setting is a reference case setting
tmCongActionNg
800 (ms)
Interval between periodic congestion resolve actions on
non-guaranteed traffic class connections in a cell.
Default setting is a reference case setting
tmInitialG
3000 (ms)
Minimum time before congestion resolve actions are
initiated on guaranteed traffic class connections in a cell
(after detection of DL cell congestion).
Default setting is a reference case setting
tmInitialG >= tmInitialGhs
Rev A 2007-11-01
 Ericsson AB 2007
12 (33)
Basic Parameters, Counters and KPIs
tmInitialGhs
500 (ms)
Minimum time before congestion resolve actions are
initiated on guaranteed-hs traffic class connections in a
cell (after detection of DL cell congestion).
tmInitialGhs <= tmInitialG
releaseAseDlGhs
0
Amount of ASE in DL to be released with each periodic
congestion resolve action targeting guaranteed-hs
traffic class connections in a cell.
tmCongActionGhs
300 (ms)
Interval betwen periodic congestion resolve actions on
guaranteed-hs traffic class connections in a cell.
Parameter
Default Value
Description
queueSelectAlgorithm
ROUND_ROBIN
Specifies the scheduling algorithm used in the cell.
2.5
HSDPA
Possible values:
• EQUAL_RATE
• MAXIMUM_CQI
• PROPORTIONAL_FAIR_HIGH
• PROPORTIONAL_FAIR_LOW
• PROPORTIONAL_FAIR_MEDIUM
• ROUND_ROBIN
hsCellChangeAllowed
FALSE
Overall On/Off switch for serving HS-DSCH cell change
hsHysteresis1d
10
Sets the Event 1D hysteresis value specific for HS
connections
hsTimeToTrigger1d
640
Sets the Event 1D Time to Trigger value specific for HS
connections
HsQualityEstimate
CPICH_RSCP
Indicates whether it is CPICH Ec/N0 or CPICH RSCP
that should be used for indicating "best cell" for HSDSCH cell selection and HS-DSCH cell change
dlCodeAdm
80
Admission limit used for admission based on DL
channelization code tree usage (percentage of the tree
in use).
he following expression MUST be true:
dlCodeAdm >= beMarginDlCode * 5
Rev A 2007-11-01
 Ericsson AB 2007
13 (33)
Basic Parameters, Counters and KPIs
sf4AdmUl
0
Admission limit (traffic class = nonguaranteed/guaranteed-hs, admission class = handover
or other) for number of radio links with UL SF = 4.
hsdpaUsersAdm
10
Admission limit for the number of users assigned to the
HS-PDSCH/HS-SCCH in the cell.
This limit is applicable both to HSDPA RAB setup and
to channel switching.
releaseAseDlNg
3
Amount of ASE in DL to be released with each periodic
congestion resolve action targeting non-guaranteed
traffic class connections in a cell.
Default setting is a reference case setting
releaseAseDlGhs
0
Amount of ASE in DL to be released with each periodic
congestion resolve action targeting guaranteed-hs
traffic class connections in a cell.
releaseAseDl
1
Amount of ASE in DL to be released with each periodic
congestion resolve action targeting guaranteed traffic
class connections in a cell.
Default setting is a reference case setting
Rev A 2007-11-01
 Ericsson AB 2007
14 (33)
Basic Parameters, Counters and KPIs
2.6
Idle Mode
Parameter
Default Value
Description
interFreqFDDMeasIndicator
FALSE
Inter-frequency FDD measurement indicator.
qQualMin
100
Used in UE functions for cell selection/reselection in
idle mode and connected mode. Minimum required
(acceptable) quality level in the cell (dB). Used to set
cell border between two cells.
100 : Indicates that the minimum quality level has not
been specified by the operator.
qRxLevMin
100
Used in UE functions for cell selection/reselection in
idle mode and connected mode. Minimum required
(acceptable) RX level in the cell. (dBm).
100 : Indicates that the minimum Rx level has not been
specified by the operator.
maxTxPowerUL
100
The maximum UE transmission power on the RACH
when accessing the system. Used in UE functions for
cell selection/reselection in idle mode and connected
mode. Also used by UTRAN to control the maximum TX
power level an UE may use.
100 : Default value
qOffset1sn
7
Signal strength offset between source and target cells.
qOffset2sn
0
Signal strength offset between source and target cells.
Rev A 2007-11-01
 Ericsson AB 2007
15 (33)
Basic Parameters, Counters and KPIs
3
Counters
Counters are mechanisms to measure the radio network performance, collecting and
storing statistics from the network elements, to be used to detect problem areas or to
monitor network behavior daily to facilitate the future growth and optimization.
Some counters may depend of functionalities available in the network.
The performance statistics are generated from the radio and the transport network
live traffic, and data comprises a number of counters predefined by the operator.
3.1
Accessibility
CS
Counter
pmTotNoRrcConnectReqCsSucc
pmTotNoRrcConnectReqCs
pmNoRabEstablishAttemptSpeech
pmNoRabEstablishSuccessSpeech
pmNoLoadSharingRrcConn
pmNoDirRetryAtt
Rev A 2007-11-01
Description
Total number of Successful Conversational
Call (originating and terminating) and
Emergency Call RRC Connection attempt
Total number of Conversational Call RRC
Connection attempts (originating and
terminating) and Emergency Call RRC
Connection attempts
Number of RAB establishments attempts
(Speech) referred to the Best Cell in the
Active Set.
Number of successful RAB establishments
(Speech) referred to the Best Cell in the
Active Set.
Number of Load Sharing diversions when
establishing an RRC connection
Number of attempted outgoing inter-RAT
handover to GSM due to capacity reasons.
 Ericsson AB 2007
16 (33)
Basic Parameters, Counters and KPIs
PS
pmTotNoRrcConnectReqPsSucc
pmTotNoRrcConnectReqPs
pmNoRabEstablishSuccessPacketInteractive
pmNoRabEstablishAttemptPacketInteractive
3.2
Total number of Successful 'Originating
Interactive Call', 'Terminating Interactive
Call', 'Originating Background Call',
'Terminating Background Call', or
'Originating Subscribed Traffic Call' RRC
connection setups.
Total number of 'Originating Interactive Call',
'Terminating Interactive Call', 'Originating
Background Call', 'Terminating Background
Call' or 'Originating Subscribed Traffic Call',
RRC connection attempts.
The number of successful RAB
establishments for PS Interactive RAB
mapped on E-DCH/HSDPA
The number of attempted RAB
establishments for PS Interactive RAB
mapped on HS-DSCH.
Retainability
Speech
Counter
pmNoSystemRabReleaseSpeech
pmNoNormalRabReleaseSpeech
PS
pmNoSystemRabReleasePacket
pmNoNormalRabReleasePacket
HSDPA
pmNoSystemRbReleaseHs
pmNoNormalRbReleaseHs
Rev A 2007-11-01
Description
Number of system speech RAB releases
over Iur (that is, releases of a drifting
speech call), referred to the IurLink
representing the DRNC for the best cell in
the active set.
Number of successful normal RAB releases
(Speech) referred to the Best Cell in the
Active Set.
Number of successful system RAB releases
(PS Streaming) referred to the Best Cell in
the Active Set.
Number of normal PS streaming RAB (all
rates) releases over Iur (that is, normal
releases of a drifting PS stremaing call),
referred to the IurLink representing the
DRNC for the best cell in the active set.
Number of successful system releases of
packet RABs mapped on HS-DSCH in the
Serving HS-DSCH cell.
Number of successful normal releases of
packet RABs mapped on HS-DSCH in the
Serving HS-DSCH cell.
 Ericsson AB 2007
17 (33)
Basic Parameters, Counters and KPIs
3.3
Integrity
Counter
pmFailedDchChSwitch
pmFailedChSwitch
pmChSwitchFachDch
pmChSwitchDch64Fach
pmChSwitchDch128Fach
pmChSwitchDch384Fach
pmChSwitchP384P128
pmChSwitchP128P64
pmChSwitchP128P384
pmChSwitchP64P128
Rev A 2007-11-01
Description
Number of failed channel switches between
dedicated channels except to/from PS
128/128. Stepped for the best cell in the
active set, if this cell belongs to the SRNC.
Number of failed channel type switches (that
is, between CELL_DCH and CELL_FACH)
except to/from PS 128/128. Stepped for the
best cell in the active set, if this cell belongs
to the SRNC.
Number of attempted switches from Packet
Switch-RACH/FACH to Packet Switch-64/64
Number of attempted switches from one
packet data RAB with 64 Kbps data rate on
DCH to common channel (cell_DCH-64/64
and Cell_FACH state) throughput-based
attempts.
Number of attempted switches from a RAB
with 128 Kbps data rate on DCH to common
channel (cell_DCH-64/128 and Cell_FACH
state), throughput-based attempts
Number of attempted switches from one
packet data RAB with 384 Kbps data rate on
DCH to common channel (cell_DCH-64/384
and Cell_FACH state), throughput-based
attempts .
Number of attempted switches from a RAB
with 384 Kbps data rate on DCH to a RAB
with 128 Kbps data rate on DCH, based on
DL transmitted code power measurements
or throughput.
Number of attempted switches from a RAB
with 128 Kbps data rate on DCH to a RAB
with 64 Kbps data rate on DCH, based on
DL transmitted code power measurements
or throughput.
Number of attempted switches from a RAB
with 128 Kbps data rate on DCH to a RAB
with 384 Kbps data rate on DCH, counted
after admission and throughput-based
attempts.
Number of attempted switches from a RAB
with 64 Kbps data rate on DCH to a RAB
with 128 Kbps data rate on DCH, based on
throughput measurements.
 Ericsson AB 2007
18 (33)
Basic Parameters, Counters and KPIs
3.4
Mobility
Counter
pmNoCellUpdAttempt
pmNoCellUpdSuccess
pmNoTimesCellFailAddToActSet
pmNoTimesRlAddToActSet
pmNoSuccessOutIratHoSpeech
pmNoAttOutIratHoSpeech
pmNoFailOutIratHoSpeechUeRejection
pmNoOutIratCcReturnOldCh
pmNoOutIratCcAtt
pmNoFailOutIratHoSpeechReturnOldChPhyChFail
Rev A 2007-11-01
Description
Total number of attempted cell update
procedures (periodic and cell reselection,
RRC Cell Update message received with
Cell Update Cause = Cell Reselection or
Periodic Cell Update)
Total number of successful cell updates
(periodic and cell reselection, RNC Cell
Update procedure for Cell Reselection or
Periodic Cell Update completed
successfully.
Number of times a cell fails to be added to
an active set, also increased at failure at
RL replace
Number of times an RL is added to an
active set, also increased at RL replace
Number of successful outgoing (to GSM)
inter-RAT handover for 'Conversational
speech RAB' for the best cell in the active
set.
Number of attempted outgoing (to GSM)
inter-RAT handover for 'Conversational
speech RAB' for the best cell in the active
set.
Number of failed outgoing (to GSM) interRAT handover, rejected by UE, for
'Conversational speech RAB' for the best
cell in the active set.
Total number of the PS Inter-RATCC
attempts for UE on DCH where the UE
returns to old channel.
Total number of the PS Inter-RATCC
attempts on DCH.
Number of failed outgoing (to GSM) interRAT handover due to physical channel
failure, where the UE returns to the
present Active Set for 'Conversational
speech RAB' for the best cell in the active
set.
 Ericsson AB 2007
19 (33)
Basic Parameters, Counters and KPIs
3.5
Availability
Counter
pmCellDowntimeAuto
pmCellDowntimeMan
pmHsDowntimeAuto
pmHsDowntimeMan
Rev A 2007-11-01
Description
The length of time during which a cell is
unavailable for service because, due to a
fault, the system has set a cell or channel
state to disabled and the cell and/or channel
Administration state = unlocked.
The length of time during which a cell is
unavailable for service because of
Administration state being set to manual
lock.
Amount of time the Hsdsch service in the
cell is unavailable due to that the system
has considered the cell as down, for
example, at least one of the MOs Hsdsch,
UtranCell, Pch, Rach or Fach is disabled
while all are unlocked.
Amount of time the Hsdsch service in the
cell is unavailable due to operation setting,
for example, the operator has locked at
least one of the MOs Hsdsch, UtranCell,
Pch, Rach or Fach.
 Ericsson AB 2007
20 (33)
Basic Parameters, Counters and KPIs
3.6
System Utilization
Counter
pmDlDchTrafficVolumeBeforeSplit
pmDlFachTrafficVolume
pmUlDchTrafficVolumeAfterComb
pmUlRachTrafficVolume
pmSumOfSampAseDl
pmSumOfSampAseUl
pmNoOfSampAseDl
pmNoOfSampAseUl
Rev A 2007-11-01
Description
Traffic volume DL in Kb on dedicated
channels (DCHs) (measured before
diversity splitting).
Traffic volume DL in Kb on common
channels (FACH).
Traffic volume UL in Kb on DCHs
(measured after diversity combination).
Traffic volume UL in Kb on common
channels (RACH).
Total ASE DL (sum of all sample values
recorded)
Total ASE UL (sum of all sample values
recorded)
Number of samples of Air interface Speech
Equivalents (ASE) DL
Number of samples of ASE UL
 Ericsson AB 2007
21 (33)
Basic Parameters, Counters and KPIs
4
Key Performance Indicators (KPIs)
KPIs (Key Performance Indicators) are metrics obtained from calculations with
counters and are an important part of the performance statistics.
The target KPIs are usually fixed by the operator, and should differ for each phase of
implementation of a network.
The implementation of WCDMA850 for AMX in Nicaragua has the following target
KPIs:
Rev A 2007-11-01
 Ericsson AB 2007
22 (33)
Basic Parameters, Counters and KPIs
Target Indoor Sites
KPI
Target Outdoor Sites
Voice Call Setup Success Rate *
CS Conversational –Video Call Setup Success
Rate
Video Call Setup Elapsed Time of M to M < 20s
Inter RAT HO Success Rate (3G to 2G)
Inter RAT HO Success Rate (2G to 3G)
>= 98%
>= 98%
>= 97%
>= 97%
> 95%
>=98%
>=98%
> 95%
>=97%
>=97%
Voice Call Drop Rate *
CS Conversational - Video Call Drop Rate *
Voice Call BLER (uplink and downlink) *
CS Conversational - Video Call BLER (uplink and
downlink)
DL WCDMA User Throughput
<= 1.5%
<= 1.5%
<= 1.5%
<= 1.5%
<= 2%
<= 2%
<= 2%
<= 2%
> 360kbps
> 350kbps
UL WCDMA User Throughput
DL HSDPA User Throughput
UL HSUPA User Throughput
PS RAB Establishment Success *
PS RAB Drop*
> 360kbps
> 85% Max**
> 85% Max
>98%
<1.5%
> 350kbps
> 70% Max**
> 70% Max
>97%
<2%
>98%
>97%
>98%
>97%
>98%
>98%
Multi-RAB Performance
AMR Voice Call setup Success Rate during HSPA
Call
AMR Voice Call setup Success Rate during
Interactive 64/64 call
HSPA Call setup Success Rate during AMR Voice
Call
Interactive 64/64 Setup Success Rate during AMR
Voice call
Ping Tests (32 Bytes)
95% percentile for WCDMA RAB
95% percentile for HSPA
>98%
>97%
< 150ms
< 65 ms
< 160ms
< 70 ms
SMS
SMS Success Rate
> 98%
> 95%
SMS Delivery Time < 40s
> 95%
> 90%
< 2%
> 95%
< 5%
> 90%
> 98%
> 95%
> 95%
> 90%
WAP
WAP Failure Rate
WAP Session Establishment Elapsed Time < 13s
MMS
MMS Success Rate
MMS Delivery Time < 40s
WCDMA Target KPIs for AMX - Nicaragua
Rev A 2007-11-01
 Ericsson AB 2007
23 (33)
Basic Parameters, Counters and KPIs
4.1
CS Voice Accessibility
The following formula is used to derive this drive test based KPI:
# Access Attempts = # Call Start Messages + # Blocked Call Events
Accessibility = # Blocked Call Events / # Access Attempts
Example
Number Call Setups
Number Blocked Calls
Accessibility
4.2
148
5
96.73%
CS Video Accessibility
CS Video Accessibility is defined as the ratio of access failures relative to all access
attempts.
This is currently identified by the following events:
•
Call Attempt Message = "RRC Connection Request"
•
Call Attempt Event = “Call Attempt” and/or “Call Attempt Retry”
•
Call Start Message = "Alerting"
•
Call Start Events = “Call Setup”
•
Access Failures
o Blocked Call Event1 = "Blocked Call"
o Blocked Call Event2 = "RRC Connection Abnormal Release. Blocked
Call"
o Blocked Call Event3 = “RRC Connection Reject. Blocked Call”
o Blocked Call Event4 = “Blocked Call. Call Initialization”
o Blocked Call Event5 = “Blocked Call. Call Initiation”
The following formula is used to derive this drive test based KPI:
Rev A 2007-11-01
 Ericsson AB 2007
24 (33)
Basic Parameters, Counters and KPIs
# Access Attempts = # Call Start Messages + # Blocked Call Events
Accessibility = # Blocked Call Events / # Access Attempts
Example
Number Call Setups
Number Blocked Calls
Accessibility
4.3
148
5
96.73%
CS Voice Call Setup Time
Voice call setup time indicates the network response time to a user for a voice
service.
Voice Call setup time = Time (Call Start Message) – Time (Call Attempt Message)
Example
Average Call Setup Time (s)
95th Percentile Call Setup
Time (s)
4.4
03.06
07.77
Inter-Radio Access Technology Cell Change KPIs
IRAT Cell Change Events are flagged when the following messages are detected:
Rev A 2007-11-01
•
UMTS -> GSM IRAT Attempt = "Cell Change Order From UTRAN
Command-GSM”
•
UMTS -> GSM IRAT Success = "Routing Area Update Accept"
•
GSM -> UMTS IRAT Attempt = "RRC Connection Request"
•
GSM -> UMTS IRAT Success = "Routing Area Update Accept"
 Ericsson AB 2007
25 (33)
Basic Parameters, Counters and KPIs
4.5
HS IRAT Cell Change Success Rate
HS IRAT Cell Change Success Rate is defined as the ratio of cell change successes
to cell change attempts:
HS IRAT Cell Change Success Rate = # IRAT Success / # IRAT Attempts
4.6
PS Accessibility
PS Accessibility is defined as the ratio of access failures relative to all access
attempts.
This is currently identified by the following events:
•
Access Attempt Message = "RRC Connection Request "
•
Access Success Message = "Activate PDP Context Accept"
•
Access Failure Event = " PDP Context Activation Failure"
The following formula is used to derive this drive test based KPI:
# Access Attempts = # Access Success Messages + # Access Failure Events
Accessibility = # Access Failure Events / # Access Attempts
[4]
Example
Number Call Establishments
Number Blocked Calls
Accessibility
Rev A 2007-11-01
26
0
100.00%
 Ericsson AB 2007
26 (33)
Basic Parameters, Counters and KPIs
4.7
CS Voice Drop Call Rate (DCR/DOR)
CS Voice Drop Call Rate is defined as the ratio of abnormal speech disconnections
relative to all speech connections.
This is currently identified by the events:
•
Normal Call Connections
o “Call Established”
o “Call Setup. Call Established”
•
Normal Call Disconnection = “Call End”
•
Abnormal Call Disconnections (Dropped Calls)
o “Dropped Call”
o “RRC Connection Abnormal Release. Dropped Call”
The following formula is used to derive this drive test based KPI:
CS Voice Drop Rate = #Abnormal Call Disconnections / #Normal Call Connections
Example:
Number of Call Establishments
Number of Dropped Calls
Actual Dropout Rate
Rev A 2007-11-01
148
1
0.7%
 Ericsson AB 2007
27 (33)
Basic Parameters, Counters and KPIs
4.8
CS Video Drop Call Rate (DCR/DOR)
CS Video Drop Call Rate is defined as the ratio of abnormal video disconnections
relative to all speech connections.
This is currently identified by the following events:
•
Normal Call Connections
o “Call Established”
o “Call Setup. Call Established”
•
Normal Call Disconnection = “Call End”
•
Abnormal Call Disconnections (Dropped Calls)
o “Dropped Call”
o “RRC Connection Abnormal Release. Dropped Call”
The following formula is used P to derive this drive test based KPI:
CS Video Drop Rate = #Abnormal Call Disconnections / #Normal Call Connections
Example:
Number of Call Establishments
Number of Dropped Calls
Actual Dropout Rate
Rev A 2007-11-01
148
1
0.7%
 Ericsson AB 2007
28 (33)
Basic Parameters, Counters and KPIs
4.9
PS Session Drop Rate (SDR)
PS Session Drop Rate is defined as the ratio of abnormal PSD disconnections
relative to all PSD disconnections (both normal and abnormal).
PS Drop Rate shall be measured after the start of the ftp download. A PS data
session shall be considered as dropped when ftp session is abnormally disconnected
without completing a file transfer due to any reason. User intervention (manual
abortion) is marked as a normal session end.
This is currently identified by the following events:
•
Normal Session Connection = “Session Start”
•
Normal Session Disconnection
o “Session End”
o “Session aborted by user”
•
Abnormal Session Disconnections (Dropped Sessions)
o “Session Error”
o “RRC Connection Abnormal Release. Dropped Call”
The following formula is used to derive this drive test based KPI:
PS Session Drop Rate = #Abnormal Session Disconnections / #Normal Session
Connections
Example:
PS Results
Number of Session Starts
Number of Session Drops
Rev A 2007-11-01
26
6
 Ericsson AB 2007
29 (33)
Basic Parameters, Counters and KPIs
4.10
CS Voice Quality DL BLER
The drive test based DL BLER value shall be collected from the UE during a call
The DL BLER measurements are recorded from the time when the “Connect”
message is received until the time when the call terminates normally or abnormally.
# BLER Measurements
Average DL BLER %
Example
Number BLER Measurements
Average BLER
Percentile BLER
4.11
8013
0.46%
2.30%
CS Video Quality BLER
The drive test based BLER value shall be collected from the UE during a call.
The DL BLER measurements are recorded from the time when the “Connect”
message is received until the time when the call terminates normally or abnormally.
The following events and information elements are used to define Video BLER:
•
Call Start Events
o "Call Established"
o “Call Setup. Call Established”
•
Call End Event = "Call End"
•
Call Drop/Abnormal Release
o Drop Event1 = "Dropped Call"
o Drop Event2 = "RRC Connection Abnormal Release. Dropped Call"
Rev A 2007-11-01
 Ericsson AB 2007
30 (33)
Basic Parameters, Counters and KPIs
The following statistics are provided for DL BLER:
•
# BLER Measurements
•
Average DL BLER %
•
Percentile DL BLER %
Example
Number BLER Measurements
Average BLER
Percentile BLER
4.12
8013
0.46%
2.30%
PS DL/UL Current Application Throughput (kbps)
This KPI represents the Current Application Throughput from UE while is in an FTP
session.
The DL/UL current throughput measurements are recorded from the “Session Start”
event is detected until the time when the session terminates normally or abnormally.
The following events and information elements are used to define dedicated mode:
•
Session Start Event = "Session Start"
•
Session End Event
o "Session End"
o “Session Aborted by User”
•
Session Drop/Abnormal Release
o Drop Event1 = "Session Error"
o Drop Event2 = "RRC Connection Abnormal Release. Dropped Call"
The following statistics are provided for DL/UL Current Throughput:
Rev A 2007-11-01
•
Session Mean Throughput (kbit/s)
•
Session Percentile Throughput
•
Session Max Throughput (kbit/s)
 Ericsson AB 2007
31 (33)
Basic Parameters, Counters and KPIs
Example
Session Mean Throughput (kbit/s)
Session Percentile Throughput
(kbit/s)
Session Max Throughput (kbit/s)
4.13
DL
293.7
UL
0.0
385.4
414.6
0.0
0.3
HS DL/UL Current Application Throughput (kbps)
This KPI represents the Current Application Throughput while the UE is in an FTP
session.
The DL/UL current throughput measurements are recorded from the time when the
“Session Start” event is detected until the time when the session terminates normally
or abnormally.
The following events and information elements are used to define dedicated mode
and the correct Transport Channel ID:
•
Session Start Event = "Session Start"
•
Session End Event = "Session End"
•
Session Drop/Abnormal Release
o Drop Event1 = "Session Error"
o Drop Event2 = "RRC Connection Abnormal Release. Dropped Call"
Example
Session Mean Throughput (kbit/s)
Session Percentile Throughput
(kbit/s)
Session Max Throughput (kbit/s)
Rev A 2007-11-01
DL
293.7
UL
0.0
385.4
414.6
0.0
0.3
 Ericsson AB 2007
32 (33)
Basic Parameters, Counters and KPIs
4.14
Ping Success Rate
This KPI shows the number of successful ping responses during the test.
The following events and information elements are used to define sessions and
pings. Only pings within a session are recorded.
•
Session Start Event = "Session Start" and Eventinfo = “Ping”
•
Session End Event = "Session End"
•
Session Drop/Abnormal Release
o Drop Event1 = "Session Error"
o Drop Event2 = "RRC Connection Abnormal Release. Dropped Call"
•
Successful Ping Event = "Ping Response. Ping Success"
•
Failed Ping Event = "Ping Response. Ping Timeout”
Ping Success Rate = # Successful Ping Events / # Failed Ping Events
Example in Ping output sheet
Data Latency Results
Ping Responses
Ping Timeouts
Ping Success Rate
Rev A 2007-11-01
from idle
1
0
100.00%
 Ericsson AB 2007
from Active
12999
0
100.00%
33 (33)