LTE Radio Access, Rel. LTE
17A, Operating
Documentation, Issue 03
Configuring RF Sharing
DN09172017
Issue 13
Approval Date 2017-11-14
Configuring RF Sharing
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© 2018 Nokia
DN09172017 Issue: 13
Configuring RF Sharing
Table of Contents
This document has 91 pages
Summary of changes..................................................................... 7
1
Concepts of RF sharing and RX diversity sharing....................... 10
2
RF sharing - basic requirements.................................................. 11
3
RF sharing parameter configuration.............................................13
4
4.1
4.2
4.3
RF Sharing deployment scenarios............................................... 14
Installing a new RF sharing site................................................... 14
Adding RF sharing to existing site and activating locally............. 16
Adding RF sharing to existing site and activating locally - Sync
Hub Direct Forward in use .......................................................... 20
Adding RF sharing with locked WCDMA cells............................. 23
4.4
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.3
5.3.1
5.4
Commissioning RF sharing.......................................................... 29
Commissioning WCDMA for RF Sharing..................................... 29
Commissioning LTE for RF Sharing............................................. 36
LTE-GSM RF sharing parameter configuration - NOTEs............. 43
Converting LTE SCF backwards for GSM commissiong for RF
sharing - online mode ..................................................................44
Converting LTE SCF backwards for GSM commissioning for RF
sharing - offline mode...................................................................46
Commissioning GSM for RF Sharing........................................... 49
Sync Hub related BSC MML commands to set right Sync Mode for
GSM BTS..................................................................................... 56
Recommissioning RF Sharing to change particular settings in
Master technology........................................................................57
6
6.1
Reverting RF sharing site to dedicated site................................. 60
Reverting RF sharing site to dedicated GSM site........................ 60
7
7.1
7.2
Rx diversity sharing......................................................................62
Rx diversity sharing requirements................................................62
Commissioning WCDMA or LTE to High Gain MHA or Low Gain
MHA RX diversity configurations..................................................65
Commissioning WCDMA or LTE to Low Gain MHA RX Diversity
configurations only....................................................................... 71
Commissioning GSM to RX diversity sharing.............................. 77
LTE-GSM RF sharing with Rx diversity sharing (P-type
configuration)............................................................................... 80
Commissioning type P configuration in LTE.................................82
Commissioning type P configuration in GSM...............................88
7.3
7.4
7.5
7.5.1
7.5.2
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Configuring RF Sharing
List of Figures
4
Figure 1
Main differences between RF sharing and RX diversity sharing
concepts............................................................................................. 10
Figure 2
RF sharing with locked WCDMA cells concept.................................. 23
Figure 3
Commissioning - reconfiguration, target: BTS....................................25
Figure 4
GSM BTS - alarms at startup............................................................. 26
Figure 5
GSM BTS - selecting shared/dedicated modules...............................27
Figure 6
WCDMA - Enable EIF2 as RP3-01 interface......................................30
Figure 7
WCDMA - BTS Synchronization settings for Sync Hub Master with
GPS-Phase as Sync Source.............................................................. 32
Figure 8
WCDMA - BTS Synchronization settings for Sync Hub Slave............32
Figure 9
WCDMA - Concurrent Mode Settings.................................................33
Figure 10
WCDMA - Local Cell Resources........................................................ 34
Figure 11
WCDMA - Send Parameters.............................................................. 36
Figure 12
LTE - Enable EIF2 as RP3-01 interface............................................. 38
Figure 13
LTE - BTS Synchronization settings for Sync Hub Master with GPSPhase as Sync Source....................................................................... 40
Figure 14
LTE - BTS Synchronization settings for Sync Hub Slave................... 40
Figure 15
LTE - Concurrent Mode Settings for LTE-2G......................................41
Figure 16
LTE - Concurrent Mode Settings for LTE-3G......................................42
Figure 17
Selecting Backup 2G Commissioning File..........................................45
Figure 18
Saving Backup 2G Commissioning File............................................. 46
Figure 19
Creating Commissioning File for LTE-GSM RF sharing - Network
Element Manager offline mode...........................................................47
Figure 20
Saving Commissioning File for LTE-GSM RF Sharing - Network
Element Manager offline mode...........................................................48
Figure 21
GSM - Site Specific Information......................................................... 52
Figure 22
GSM - Module Configuration for Sync Hub Master............................ 53
Figure 23
GSM - Module Configuration for Sync Hub Slave.............................. 54
Figure 24
GSM - Module Configuration for Temporary Sync Master..................54
Figure 25
GSM - Local Sector Settings.............................................................. 55
Figure 26
Rx diversity sharing requirements...................................................... 62
Figure 27
Carrier-TRX spacing rules (pictures not in scale)...............................63
Figure 28
Additional Rx diversity cables connection with optional MHA............ 64
Figure 29
Rx diversity signal paths.....................................................................65
Figure 30
RX diversity sharing: WCDMA - Local Cell Resources...................... 66
Figure 31
RX diversity sharing: WCDMA - Carrier settings................................ 67
Figure 32
RX diversity sharing: WCDMA - Antenna Line Management............. 68
Figure 33
RX diversity sharing: WCDMA - AISG MHA Settings: LNA1..............68
Figure 34
RX diversity sharing: WCDMA - AISG MHA Settings: LNA2..............69
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DN09172017 Issue: 13
Configuring RF Sharing
Figure 35
RX diversity sharing: WCDMA - Antenna Line Settings - RX antenna
modifications.......................................................................................70
Figure 36
WCDMA - Send Parameters.............................................................. 70
Figure 37
RX diversity sharing for Low Gain MHA only: WCDMA - Local Cell
Resources.......................................................................................... 72
Figure 38
RX diversity sharing for Low Gain MHA only: WCDMA - Carrier
settings............................................................................................... 73
Figure 39
RX diversity sharing for Low Gain MHA only: WCDMA - Antenna Line
Management.......................................................................................74
Figure 40
RX diversity sharing for Low Gain MHA only: WCDMA - AISG MHA
Settings: LNA1....................................................................................74
Figure 41
RX diversity sharing: WCDMA - Low Gain AISG MHA Settings: LNA2..
75
Figure 42
RX diversity sharing for Low Gain MHA only: WCDMA - Antenna Line
Settings - RX antenna modifications.................................................. 76
Figure 43
RX diversity sharing for Low Gain MHA only: WCDMA - Send
Parameters......................................................................................... 77
Figure 44
RX diversity sharing: GSM - Antenna Line Settings - TX (example)......
79
Figure 45
RX diversity sharing: GSM - Antenna Line Settings - RX...................79
Figure 46
RX diversity sharing: GSM - Antenna Line Settings - RX - for Flexi
Compact............................................................................................. 80
Figure 47
Cabling instruction for P-type configuration with LTE FSME.............. 81
Figure 48
Cabling instruction for P-type configuration with LTE FSMF.............. 82
Figure 49
P-type LTE - LTE Concurrent Mode Settings......................................83
Figure 50
P-type LTE - Cell Resources (Local cell 1)......................................... 84
Figure 51
P-type LTE - Cell Resources (Local cell 2)......................................... 85
Figure 52
P-type LTE - Cell Resources (Local cell 3)......................................... 86
Figure 53
P-type LTE - LTE Carriers...................................................................87
Figure 54
P-type LTE - Antenna Line Settings................................................... 88
Figure 55
P-type GSM - Local sector 1.............................................................. 89
Figure 56
P-type GSM - Local sector 2.............................................................. 90
Figure 57
P-type GSM - Local sector 3.............................................................. 90
Figure 58
P-type GSM - Antenna line settings................................................... 91
DN09172017 Issue: 13
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Configuring RF Sharing
List of Tables
6
Table 1
RAT releases covered by the document...............................................7
Table 2
FSMr.3 RF sharing SM parameters settings...................................... 13
Table 3
AirScale RF sharing SM parameters settings.....................................13
Table 4
Sample configurations in TRS Priority List in GF............................... 55
Table 5
Clock source (CS) and SENA parameters values for ESMB/C GSM
SM...................................................................................................... 57
Table 6
Clock source (CS) and SENA parameters values for FSMF GSM SM..
57
Table 7
WCDMA/LTE settings forcing the GSM recommissioning.................. 58
Table 8
Example of manual filter tuning (FXDA)............................................. 67
Table 9
Example of manual filter tuning (FXDA)............................................. 73
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DN09172017 Issue: 13
Configuring RF Sharing
Summary of changes
Summary of changes
Changes between document issues are cumulative. Therefore, the latest document
issue contains all changes made to previous issues.
This document is common for Radio Access Technologies (RATs) listed in the below
table.
Table 1
RAT releases covered by the document
Radio Access Technology
(RAT)
Product release
GSM/EDGE (BSS)
GSM 16, GSM 17
WCDMA RAN
WCDMA 16, WCDMA 17, WCDMA 18
Long Term Evolution
FDD-LTE 16, FDD-LTE 16A, FDD-LTE 17A
Changes between issues 12 (2017-06-28) and 13 (2017-11-14)
Converting LTE SCF backwards for GSM commissiong for RF sharing - online
mode
•
•
•
•
Figure Selecting Backup 2G Commissioning File has been added.
Figure Saving Backup 2G Commissioning File has been added.
Section title has been modified.
Step has been updated - NetAct removed.
Converting LTE SCF backwards for GSM commissioning for RF sharing - offline
mode
•
Section has been added.
Changes between issues 11 (2016-12-19) and 12 (2017-06-28)
RF sharing - basic requirements
•
Section has been added.
RF sharing parameter configuration
•
Section has been added.
RF Sharing deployment scenarios
•
•
Title of RF sharing configurations document has been changed.
NOLS directory has been updated.
Adding RF sharing to existing site and activating locally - Sync Hub Direct
Forward in use
•
Section has been added.
Installing a new RF sharing site
•
•
DN09172017 Issue: 13
Title of RF sharing configurations document has been changed.
Reference to AirScale documentation has been added.
© 2018 Nokia
7
Summary of changes
Configuring RF Sharing
•
•
Step Disconnect optical connections between RF Modules and the LTE AirScale
System Module. has been added.
Additional information on WCDMA SW update requirement has been added in step
11.
Adding RF sharing to existing site and activating locally
•
•
Title of RF sharing configurations document has been changed.
References to AirScale and commissioning documentation have been added.
Adding RF sharing with locked WCDMA cells
•
Title of RF sharing configurations document has been changed.
Commissioning WCDMA for RF Sharing
•
•
Note about IP address has been added.
Step Proceed to BTS Synchronization settings has been updated.
LTE-GSM RF sharing parameter configuration - NOTEs
•
Section has been added.
Converting LTE SCF backwards for GSM commissiong for RF sharing - online
mode
•
Section has been added.
Commissioning LTE for RF Sharing
•
•
•
•
Precondition on RFMs/RRHs has been updated.
Note about IP address has been added.
Step Proceed to BTS Synchronization settings has been updated.
Title of RF sharing configurations document has been changed.
Commissioning GSM for RF Sharing
•
•
•
•
Note about GSM RF sharing configuration has been added.
Note about IP address has been added.
Step Proceed to Site Specific Information has been updated.
A precondition about the master technology SCF has been updated.
Rx diversity sharing requirements
•
Additional Rx diversity cables connection with optional MHA has been updated optional MHA added.
Commissioning type P configuration in LTE
•
Post-requisites paragraph has been added.
LTE-GSM RF sharing with Rx diversity sharing (P-type configuration)
•
8
Cabling instruction for P-type configuration with LTE FSME and Cabling instruction
for P-type configurations with LTE FSMF have been updated. Note on internal
antenna connecting added.
© 2018 Nokia
DN09172017 Issue: 13
Configuring RF Sharing
Summary of changes
Changes between issues 10 (2016-10-18) and 11 (2016-12-19)
Commissioning GSM for RF Sharing
•
•
DN09172017 Issue: 13
Step Proceed to Transmission Synchronization Settings has been updated.
Note about GSM RF sharing configuration has been added.
© 2018 Nokia
9
Concepts of RF sharing and RX diversity sharing
Configuring RF Sharing
1 Concepts of RF sharing and RX diversity
sharing
A description and a picture showing the basic differences between RF sharing and RX
diversity sharing.
There are two ways of deploying two technologies at one site with shared resources: RF
sharing and RX diversity sharing (also called antenna sharing). The main difference is
that in RF sharing the technologies work in Master-Slave mode and the same
RFMs/RRHs are used by both technologies, while in RX diversity sharing both
technologies are transmitting independently, using dedicated RFMs. Figure 1: Main
differences between RF sharing and RX diversity sharing concepts presents the main
differences between those deployment cases. Note that the figure is only an example.
Figure 1
Main differences between RF sharing and RX diversity sharing concepts
RFSharing
SyncMaster
RadioMaster
Technology1
SystemModule
SharedRFM/RRH
ALDs
Antennas
ALDs
Antennas
Technology2
SystemModule
RXdiversitysharing
RadioMaster
Technology1
SystemModule
Technology1
dedicatedRFM
RadioMaster
Technology2
SystemModule
10
Technology2
dedicatedRFM
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Configuring RF Sharing
RF sharing - basic requirements
2 RF sharing - basic requirements
System Modules' synchronization settings. RF Module operating in the RF sharing
mode.
WCDMA-LTE RF sharing with RP3-01 sync
WCDMA-LTE RF sharing can be configured only if the shared BTS does or will contain a
WCDMA System Module. If the WCDMA System Module does not exist and the
WCDMA-LTE RF sharing has been configured, LTE BTS will stay in the initializing state
because the WCDMA System Module is always the synchronization master in case of
WCDMA-LTE RF sharing. Initializing state in the LTE BTS SW prevents reconfiguration
commissioning of the LTE BTS by the Network Element Manager.
WCDMA-LTE and LTE-LTE RF sharing with Sync Hub Direct Forward
WCDMA-LTE or LTE-LTE RF sharing can be configured only if the shared BTS does or
will contain another WCDMA/LTE System Module. If the WCDMA/LTE System Module
does not exist and the WCDMA-LTE or LTE-LTE RF sharing has been configured, LTE
BTS will stay in the initializing state when the shared WCDMA/LTE System Module is the
sync hub master or it is disrupting the synchronization chain. Initializing state in the LTE
BTS SW prevents reconfiguration commissioning of the LTE BTS by the Network
Element Manager.
LTE-LTE + LTE-GSM RF sharing with Sync Hub Direct Forward
The LTE sync slave can be configured only if the shared BTS does or will contain
another LTE or GSM System Module that provides sync propagation. If the LTE or GSM
System Module does not exist, the LTE-LTE + LTE-GSM RF sharing has been
configured, and the position of the LTE BTS in the SHDF chain is after a module that
does not exist, that is, forwarded synch not provided, the LTE BTS will stay in the
initializing state. Initializing state in the LTE BTS SW prevents reconfiguration
commissioning of the LTE BTS by the Network Element Manager.
When the RF sharing enabled parameter is activated and LTE-LTE RF sharing is
configured with additional sharing with GSM, the following is the recommended Sync
Hub configuration:
•
•
•
•
1st in chain - LTE
2nd in chain - LTE
3rd in chain - GSM
4th in chain - GSM
When the RF sharing enabled parameter is activated and LTE-LTE RF sharing is
configured without additional sharing with GSM, the Forward synchronization
in co -siting parameter must be activated in one BTS and disactivated in the
other BTS.
g
Note: When AirScale System Module is used, Sync Hub Direct Forward must be used.
RF Module operating in RF sharing mode
When operating in RF sharing mode, a single RF Module is connected to two modules
(System or Baseband Extension) simultaneously.
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11
RF sharing - basic requirements
Configuring RF Sharing
Two technologies are connected to the one and the same Flexi Multiradio RF Module.
The two technologies can be:
•
•
•
•
•
12
Flexi EDGE System Module operating in GSM/EDGE SW with Flexi Multimode
System Module in LTE
Flexi EDGE System Module operating in GSM/EDGE SW with Flexi Baseband
Extension Module in LTE
Flexi Multimode System Module operating in WCDMA SW with Flexi Multimode
System Module in LTE
Flexi Multimode System Module is operating in WCDMA SW with Flexi Baseband
Extension Module in LTE
Flexi Multimode System/Extension Module operating in LTE SW with a Flexi
Multimode System/Extension Module in the peer LTE (LTE-LTE RF sharing)
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Configuring RF Sharing
RF sharing parameter configuration
3 RF sharing parameter configuration
The RF sharing functionality is activated with the RF sharing enabled parameter.
The parameter enables RF sharing with GSM, WCDMA or LTE between BTSs. The
shared RF cannot be chained.
The RF sharing enabled parameter can be set to true only when the Supported
LTE cell technology parameter shows the FDD value.
When the RF sharing enabled parameter is set to true, the following must be set
according to the type of sharing:
Table 2
FSMr.3 RF sharing SM parameters settings
RF sharing type
System Module parameters
WCDMA-LTE
One System Module and one External system module
identifier instance with the Universal terrestrial radio
access network parameter set to true
LTE-GSM
One System Module and one External system module
identifier instance with the GSM EDGE radio access
network parameter set to true
LTE-LTE
One System Module and one External system module
identifier instance with the Evolved universal
terrestrial radio access parameter set to true
LTE-GSM + LTE-GSM
One System Module, one External system module
identifier instance with the Evolved universal
terrestrial radio access parameter set to true, and one
optional External system module identifier instance with
the GSM EDGE radio access network parameter set to true
Table 3
AirScale RF sharing SM parameters settings
RF sharing type
WCDMA-LTE
System Module parameters
One System Module and one or more External system module
identifier instances with the Universal terrestrial radio
access network parameter set to true
If the RF sharing enabled parameter is set to true, there cannot be any instances
of the CPRI-A RF sharing set to SECONDARY.
If the RF sharing enabled parameter is set to true and the RF Module is shared,
there must be two CABLINK objects created with the parameters as follows:
•
•
First endpoint distinguished Name set as the DN of the shared RF
Module, Second enpoint distinuguished name set to the System Module
or the Baseband Unit that is connected to the shared RF Module.
First endpoint distinguished Name set as the DN of the shared RF
Module, Second enpoint distinuguished name set to the secondary
System Module that is sharing the RF Module.
If the RF sharing enabled parameter is set to false, there must be no External
system module identifier instances created for RF sharing purposes.
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13
RF Sharing deployment scenarios
Configuring RF Sharing
4 RF Sharing deployment scenarios
References to available documentation on the possible RF sharing scenarios.
For the supported and recommended HW combinations, the latest SW release
combinations, and the recommended SW upgrade paths, see the following documents:
•
•
•
RF-Sharing Regular Maintenance Newsletter
This RF Sharing Newsletter is published internally and updated monthly. For details,
contact Technical Support.
Classical RF Sharing Released Configurations
Available in NOLS at the following directory: NOLS ► Product Information Center
► Documentation finder ► Radio Network ► Base Stations ► Flexi Multiradio
10 BTS EDGE / Flexi Multiradio BTS EDGE / Flexi Multiradio BTS WCDMA /
Flexi Multiradio BTS LTE/AirScale BTS LTE ► Operating documentation ►
Classical RF Sharing Released Configurations (XLS format)
Compatibility Matrix
Available in NOLS at the following directory: NOLS ► Product Information Center
► Compatibility Matrix ► Compatibility Matrix - Access Networks
4.1 Installing a new RF sharing site
Steps to install a new site with RF sharing: WCDMA-GSM, LTE-GSM, or WCDMA-LTE.
Purpose
The purpose of this scenario is to prepare a new RF sharing site. Both technologies' HW
is installed and activated locally during the site visit. After the site visit both technologies
are On air.
Ensure that you have all the respective instructions to prepare the desired site.
Procedure
Before the site visit
1
Prepare the configurations, depending on which technologies are used:
Sub-steps
a) For GSM: create the site on BSC.
b) For WCDMA: create the site on RNC.
Optional: Prepare Site Configuration Files (SCFs) for both technologies to save the
site visiting time.
14
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RF Sharing deployment scenarios
It is recommended that you store the backup of SCFs for both technologies in NetAct
as soon as the RF sharing site is accepted. This would serve as a reference in the
future troubleshooting and help in faster recovery of sites in HW replacement
scenarios.
2
Install the correct GSM/WCDMA/LTE BTS Site Manager version on your computer(s).
g
3
Note: It is recommended that you have two computers, which allows simultaneous
connection to both technologies' Site Managers.
Check the supported SW for both technologies in Compatibility Matrix, in Classical RF
Sharing Released Configurations, or in RF-sharing Regular Maintenance Newsletter.
For details on these documents, see RF Sharing deployment scenarios section.
4
Optional: Update the System Module SW.
It is recommended that you update the new System Module SW before the site visit
(if possible) to reduce the site visit time.
During the site visit
5
Install the HW, do the cabling, and connect your computer(s) to System Modules via
Local Management Ports (LMPs).
To connect the modules for RF sharing configurations, see Classical RF Sharing
Released Configurations.
For details, see the respective Installing and Cabling Flexi Multiradio or AirScale
documentation.
Ensure that the RFM/RRH has the same SFP type as the System Module - 3 Gbps
or 6 Gbps. In case of LTE, always use 6 Gbps SFPs and optical links, when
supported by the used HW.
6
Power up the Master technology's System Module (WCDMA or LTE).
7
If not done before, update the System Module SW to the desired version.
If Incompatible SW version detected (0023) alarm is raised, update the
SW again.
Ensure that all the installed RFMs/RRHs and ALDs are detected and shown properly
in the BTS Site Manager.
Step result
The HW is now ready for commissioning.
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RF Sharing deployment scenarios
8
Configuring RF Sharing
Commission the Master technology for RF sharing.
9
g
Note: This step is mandatory if the LTE System Module is the AirScale variant.
Disconnect optical connections between RF Modules and the LTE AirScale System
Module.
10 Power up the Slave technology's System Module and update the System Module SW to
the desired version, if not done before.
Step result
The RF Modules can be detected by WCDMA.
11 Commission the Slave technology for RF sharing.
In case GSM is the Slave technology, select "Manual commissioning", then fetch the
SCF from the Master technology's BTS (as a Backup Commissioning File) and use it
as a template in Hardware Configuration.
WCDMA SW update is required in order for RF Modules to download the SW
corresponding to the new Radio Master (WCDMA).
Step result
The site is ready and both technologies are On air.
Postrequisites
Before leaving the site ensure that:
•
•
•
Both technologies are working properly without any unexpected alarms.
Test calls (both voice and data) are successful in each cell/sector.
All unused ports (for example LMP) are secured with IP caps.
4.2 Adding RF sharing to existing site and activating
locally
Procedure of adding one technology HW to an existing site. Creating an RF Sharing site:
WCDMA-GSM, LTE-GSM, or WCDMA-LTE.
Purpose
Typical initial status:
•
•
16
GSM is already on air, WCDMA or LTE is now added as a Master technology.
WCDMA is already on air, LTE is now added as a Slave technology.
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Configuring RF Sharing
RF Sharing deployment scenarios
The purpose of this scenario is to add RF sharing to the site. The other technology's HW
is installed and RF sharing is activated locally during the site visit. After the site visit both
technologies are on air.
Ensure that you have all the respective instructions to prepare the desired site.
Procedure
Before the site visit
1
If possible, prepare the shared configurations, depending on which technologies are
used:
Sub-steps
a) For GSM: create the site on BSC.
b) For WCDMA: create the site on RNC.
Optional: Prepare Site Configuration Files (SCFs) for both technologies to save the
site visiting time.
It is recommended that you store the backup of SCFs for both technologies in NetAct
as soon as the RF sharing site is accepted. This would serve as a reference in the
future troubleshooting and help in faster recovery of sites in HW replacement
scenarios.
2
Install the correct GSM/WCDMA/LTE BTS Site Manager version on your computer(s).
When activating RF sharing in an existing WCDMA site, ensure you have the new
required licences downloaded to your computer.
g
3
Note: It is recommended that you have two computers, which allows simultaneous
connection to both technologies' Site Managers.
Check the supported SW for both technologies in Compatibility Matrix, in Classical RF
Sharing Released Configurations, or in RF-sharing Regular Maintenance Newsletter.
For details on these documents, see the RF Sharing deployment scenarios section.
4
Optional: Update and activate the already deployed technology's System Module SW.
If the SW update is needed for the already deployed technology, update it remotely
to save the site visit time.
5
Optional: Update the new technology's System Module SW.
It is recommended that you update the new technology's System Module SW before
the site visit (if possible). This reduces the site visit time and the eventual downtime
of the already deployed technology's transmission.
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RF Sharing deployment scenarios
g
Configuring RF Sharing
Note: FSMF is delivered with Factory Delivered SW (FDSW). Site Manager does not
detect any RFMs/RRHs and ALDs until the System Module is updated with appropriate
technology SW. For details, see the Technical Support Note: TS-SRAN-HW-0108 and
the FDSW in BTS section in the Nokia BTS Commissioning Overview document.
During the site visit
6
Install the new HW. Do not connect the new System Module to the already deployed
System Module and RFMs/RRHs.
This way does not disturb the already deployed technology transmission.
7
Power up the new technology's System Module. Update and activate the SW, if not done
before.
This ensures that the new System Module is running the correct SW before
proceeding.
8
Power off the already deployed and the new System Modules and finalize the HW
installation for RF sharing.
To connect the modules for RF sharing configurations, see Classical RF Sharing
Released Configurations.
For details, see the respective Flexi Multiradio or AirScale Installing and Cabling
documentation.
Ensure that the RFM/RRH has the same SFP type as the System Module - 3 Gbps
or 6 Gbps. In case of LTE, always use 6 Gbps SFPs and optical links, when
supported by the used HW.
Step result
The already deployed technology's traffic goes down.
9
Recommended (Optional): Switch the RFM/RRH power cables to the Master System
Module.
The Shared RFMs/RRHs can be powered from either Master System Module, Slave
System Module, or an external power supply, depending on the site environment.
If the RFMs/RRHs are powered from the Slave System Module and the Slave
System Module gets a HW reset or a failure occurs, both technologies' traffic goes
down.
g
Note: Exception: in WCDMA-LTE case, if the Slave (LTE) System Module is FSMF with
Power Distribution Sub-module (FPFD), then the System Module reset does not affect
the power supply provided by FPFD.
If the RFMs/RRHs are powered from the Master System Module (as recommended)
and the Slave System Module gets reset or failure occurs, only the Slave technology
traffic goes down.
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RF Sharing deployment scenarios
10 Power up the Master technology's System Module and ensure all the RFMs/RRHs and
ALDs are detected and shown properly.
If Incompatible SW version detected (0023) alarm is raised, update the
SW again.
Step result
The HW is now ready for commissioning.
11 Commission the Master technology (WCDMA or LTE) for RF sharing.
If the SCF was not created before the site visit, save the Master technology's SCF for
later use in the GSM (Slave) technology commissioning. Save the SCF as a Backup
Commissioning File.
Step result
The Master technology cells go on air (in both shared and dedicated RFMs/RRHs).
12 Power up the Slave technology (LTE or GSM) and commission it for RF sharing.
In case of GSM, the commissioning can be conducted with Undo Commissioning
(removes both Hardware Configuration and Transmission Parameters) procedure.
Before performing Undo Commissioning in GSM save the current SCF. It contains
the transmission settings and can be used as a back-up.
To commission GSM, fetch the SCF from the Master technology's BTS (as a Backup
Commissioning File in case of LTE SCF) and use it as a template in Hardware
Configuration.
Step result
The site is ready and both technologies are on air.
Postrequisites
Before leaving the site, ensure that:
•
•
•
•
•
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Neither of the technologies' Site Managers show any unexpected alarms.
Both technologies are transmitting properly (make test calls).
All unused ports (for example LMP) are secured with IP caps.
All cables are routed, connected and tied correctly.
Front and back covers are properly installed, if provided with the module.
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RF Sharing deployment scenarios
Configuring RF Sharing
4.3 Adding RF sharing to existing site and activating
locally - Sync Hub Direct Forward in use
Procedure of adding one technology HW to an existing site with the Sync Hub Direct
Forward functionality activated. Creating an RF Sharing site: WCDMA-GSM, LTE-GSM,
or WCDMA-LTE.
Purpose
Typical initial status:
•
•
GSM is already on air, WCDMA or LTE is now added as a Master technology.
WCDMA is already on air, LTE is now added as a Slave technology.
The purpose of this scenario is to add RF Sharing to the site. The other technology's HW
is installed and RF Sharing is activated locally during the site visit. After the site visit both
technologies are on air.
Ensure that you have all the respective instructions to prepare the desired site.
Procedure
Before the site visit
1
If possible, prepare the shared configurations, depending on which technologies are
used:
Sub-steps
a) For GSM: create the site on BSC.
Modify parameters related to Sync Hub Direct Forward (SHDF) based on
synchronization reference in Sync Hub Master (SHM) and the used GSM HW
(ESMC or FSMF). Use Packet Abis or Legacy Abis as the BTS-BSC interface.
g
Note: In FL17A release the supported GSM System Modules are ESMB and
ESMC only.
b) For WCDMA: create the site on RNC.
Optional: Prepare Site Configuration Files (SCFs) for both technologies to save the
site visiting time.
It is recommended that you store the backup of SCFs for both technologies in NetAct
as soon as the RF sharing site is accepted. This would serve as a reference in the
future troubleshooting and help in faster recovery of sites in HW replacement
scenarios.
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RF Sharing deployment scenarios
Install the correct GSM/WCDMA/LTE BTS Site Manager version on your computer(s).
When activating RF Sharing in an existing WCDMA site, ensure you have the new
required licences downloaded to your computer.
g
3
Note: It is recommended that you have two computers, which allows simultaneous
connection to both technologies' Site Managers.
Check the supported SW for both technologies in Compatibility Matrix, in Flexi Multiradio
BTS RF Sharing Released Configurations, or in RF-sharing Regular Maintenance
Newsletter.
For details on these documents, see the RF Sharing deployment scenarios section.
4
Optional: Update and activate the already deployed technology's System Module
SW.
If the SW update is needed for the already deployed technology, update it remotely
to save the site visit time.
5
Optional: Update the new technology's System Module SW.
It is recommended that you update the new technology's System Module SW before
the site visit (if possible). This reduces the site visit time and the eventual downtime
of the already deployed technology's transmission.
g
6
Note: FSMF is delivered with Factory Delivered SW (FDSW). Site Manager does not
detect any RFMs/RRHs and ALDs until the System Module is updated with appropriate
technology SW. For details, see the Technical Support Note: TS-SRAN-HW-0108.
Optional: Update the new technology's System Module SW.
It is recommended that you update the new technology's System Module SW before
the site visit (if possible). This reduces the site visit time and the eventual downtime
of the already deployed technology's transmission.
g
Note: FSMF is delivered with Factory Delivered SW (FDSW). Site Manager does not
detect any RFMs/RRHs and ALDs until the System Module is updated with appropriate
technology SW. For details, see the Technical Support Note: TS-SRAN-HW-0108.
During the site visit
7
Perform pre-cabling: SHDF (HDMI link) and RP3-01 (optical link).
8
Power off the WCDMA/GSM System Module.
Step result
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Configuring RF Sharing
The already deployed technology's traffic goes down.
9
Finalize the HW installation for RF Sharing.
To connect the modules for RF sharing configurations, see Classical RF Sharing
Released Configurations.
For details, see the respective Flexi Multiradio or AirScale Installing and Cabling
documentation.
Ensure that the RFM/RRH has the same SFP type as the System Module - 3 Gbps
or 6 Gbps. In case of LTE, always use 6 Gbps SFPs and optical links, when
supported by the used HW.
10 Power up the LTE System Module and ensure all the RFMs/RRHs and ALDs are
detected and shown properly.
If Incompatible SW version detected (0023) alarm is raised, update the
SW again.
Step result
The HW is now ready for commissioning.
11 Commission the LTE System Module as the Sync Hub Master and RF Sharing Slave.
Step result
The Master technology cells go on air (in both shared and dedicated RFMs/RRHs).
12 Power up the WCDMA/GSM System Module.
13 Commission the WCDMA/GSM System Module as the Sync Hub Slave and RF Sharing
Master.
In case of GSM, the commissioning can be conducted with Undo Commissioning
(removes both Hardware Configuration and Transmission Parameters) procedure.
Before performing Undo Commissioning in GSM save the current SCF. It contains
the transmission settings and can be used as a back-up.
To commission GSM, fetch the SCF from the Master technology's BTS (as a Backup
Commissioning File in case of LTE SCF) and use it as a template in Hardware
Configuration.
Step result
The site is ready and both technologies are on air.
Postrequisites
Before leaving the site, ensure that:
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•
•
•
•
•
RF Sharing deployment scenarios
Neither of the technologies' Site Managers show any unexpected alarms.
Both technologies are transmitting properly (make test calls).
All unused ports (for example LMP) are secured with IP caps.
All cables are routed, connected and tied correctly.
Front and back covers are properly installed, if provided with the module.
4.4 Adding RF sharing with locked WCDMA cells
Steps to reuse a GSM band for WCDMA-GSM RF sharing in an already existing site
with dedicated WCDMA and GSM.
Purpose
Initial status: WCDMA (on Band A, for example 2100 MHz) and GSM (on Band B, for
example 900 MHz) are already on air, both in dedicated mode. WCDMA Band B
WCEL(s) are created in RNC and kept in locked state.
Figure 2
RF sharing with locked WCDMA cells concept
SyncMaster
WCDMASM
DedicatedRFM
BandA
RadioMaster
SharedRFM
transmitting
onlyGSM
GSMSM
BandB
RadioMaster
RemoteRFSharingactivation
SyncMaster
WCDMASM
DedicatedRFM
BandA
RadioMaster
GSMSM
SharedRFM
transmitting
WCDMA+GSM
BandB
RadioMaster
The purpose of this scenario is to add RF sharing, in which WCDMA and GSM share the
Band B (currently used by GSM). The new optical cabling is done, RF sharing is
prepared locally during the site visit. In a typical scenario, the shared RFMs/RRHs
transmit only the GSM traffic with limited power budget (due to RF sharing), overlapping
the planned WCDMA carrier bandwidth (BW). Later, the overlapping GSM TRXs are
removed and WCDMA cells for RF sharing are activated remotely. Figure 2: RF sharing
with locked WCDMA cells concept presents the deployment case.
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RF Sharing deployment scenarios
Configuring RF Sharing
Ensure that you have all the respective instructions to prepare the desired site.
Use case
This scenario is deployed in cases where the user, for example, has not yet got a legal
license to transmit WCDMA on Band B. The scenario is used when WCDMA
transmission in dedicated mode (on Band A) is needed.
Procedure
Prerequisites
1
Install the correct GSM/WCDMA BTS Site Manager version on your computer(s).
Ensure you have the new required WCDMA licenses downloaded to your computer.
g
2
Note: It is recommended that you have two computers, which allows simultaneous
connection to both technologies' Site Managers.
Optional: Update and activate the System Module SW.
If the SW update is needed for the WCDMA and GSM System Modules, update them
remotely to save the site visit time.
3
Back up the GSM commissioning file.
During the site visit
4
Switch off the WCDMA and GSM System Modules.
Consider blocking/locking the BTS (sector) objects to hand over the ongoing traffic
before powering off the GSM BTS.
Step result
The WCDMA and GSM traffic goes down.
5
Install the new optical cables for RF sharing.
To connect the modules for RF sharing configurations, see Classical RF Sharing
Released Configurations.
For details, see the respective Installing and Cabling Flexi Multiradio documentation.
Ensure that the RFM/RRH has the same SFP type as the System Module - 3 Gbps
or 6 Gbps. In case of LTE, always use 6 Gbps SFPs and optical links, when
supported by the used HW.
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RF Sharing deployment scenarios
Commission WCDMA to RF sharing.
Sub-steps
a) Switch on the WCDMA System Module.
Connect to the System Module using the LMP cable and establish local
connection via BTS Site Manager.
If Incompatible SW version detected (0023) alarm is raised, download the SW
again.
Step result
Band B RFM/RRH is detected.
b) In BTS Site Manager, select reconfiguration, as shown in Figure 3:
Commissioning - reconfiguration, target: BTS, and update the information
regarding the shared Band B RFM(s)/RRH.
Figure 3
Commissioning - reconfiguration, target: BTS
c) Save the commissioning parameters and send them to BTS.
Save the WCDMA BTS SCF for later use in the GSM technology commissioning.
BTS gets reset and is recommissioned to RF sharing mode.
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RF Sharing deployment scenarios
Configuring RF Sharing
Step result
Band A cells are active, Band B cells are inactive (locked in RNC).
7
Commission GSM to RF sharing.
Sub-steps
a) Power up the GSM System Module.
Connect to the System Module locally and run the BTS Site Manager. Two
alarms are activated:
•
•
BCF NOTIFICATION: Shared RF module detected two synchronization
master sources.
TRX FAULTY: TRX object allocation failed in RF module.
Figure 4
GSM BTS - alarms at startup
b) In BTS Site Manager select "Commissioning/Change settings manually".
Proceed to Hardware Configuration page, select Specify from file and use the
WCDMA BTS SCF. Choose RFMs to be shared/dedicated in a pop-up window,
as in Figure 5: GSM BTS - selecting shared/dedicated modules.
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RF Sharing deployment scenarios
If the shared RFMs'/RRHs' climate-control has not been set in WCDMA
commissioning, a window pops up, press Close to ignore it.
Figure 5
GSM BTS - selecting shared/dedicated modules
c) Proceed to Local Sector Settings page and create the GSM configurations again.
g
Note: Make sure that BCCH is outside the planned WCDMA carrier BW. The
other TRXs can overlap the WCDMA carrier BW.
d) Proceed to Transmission Parameters and select "Do not change settings".
e) On the last page, press "Send SCF".
Step result
All TRXs are in working state. At this point, non-blocking alarms for the TRXs which
overlap with WCDMA carrier BW: "TRX OPERATION DEGRADED: TRX object
allocation failed in RF module" (7607) are expected.
Before leaving the site ensure that:
•
•
•
Neither of the technologies' Site Managers shows any unexpected alarms.
Both technologies transmit properly (make test calls).
All unused ports (for example LMP) are secured with IP caps.
After the site visit
Perform the steps only when the legal license to transmit WCDMA on band B is
acquired.
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8
Configuring RF Sharing
Connect to the BSC and perform the TRX removal procedure:
Sub-steps
a) Lock the BCF - command ZEFS
b) Lock the BTSs (sectors) on BSC - command ZEQS
c) Lock all the TCH-TRXs overlapping the WCDMA carrier BW - command ZERS
g
Note: TCH-TRXs have to be allocated at least 2 MHz away from the WCDMA
cell's center frequency. Thus overlapping the edges of WCDMA cell bandwidth is
allowed.
d) Delete the locked TCH-TRXs (command ZERD) or modify their ARFCN
(command ZERM)
e) Unlock the GSM BTS (sector) - command ZEQS
f)
Unlock the BCF - command ZEFS
Step result
The GSM TRXs go on air.
9
Unlock the WCDMA Band B WCELs on RNC.
Step result
The WCDMA Band B cells go on air.
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5 Commissioning RF sharing
List of instructions on how to commission RF sharing.
5.1 Commissioning WCDMA for RF Sharing
Steps to commission WCDMA for RF sharing WCDMA-GSM or WCDMA-LTE.
Purpose
Follow these steps to commission WCDMA (the Master technology) for:
•
•
RF sharing WCDMA-GSM
RF sharing WCDMA-LTE
Make sure that all the appropriate steps in RF Sharing deployment scenarios section
have been completed.
g
Note: The RF sharing is a part of the commissioning procedure. Commissioning
procedures are described in detail in the technology-specific documents. The RF
sharing commissioning steps have to be taken in addition to the technology-specific
steps.
g
Note: In RF sharing configurations, only certain Master-Slave BTS SW combinations,
SW upgrade paths and configurations are tested, recommended and officially
supported. Using any other SW combinations, upgrade path or configuration might
cause unexpected problems.
Preconditions:
•
•
•
•
•
The BTS Site Manager is running and connection to the BTS is established. Always
use the matching BTS Site Manager version, considering the running BTS SW
version.
The running BTS SW in the System Module is the correct version before
commissioning. Upgrade the BTS SW if required.
The RFMs/RRHs and ALDs are correctly detected.
There are no unexpected alarms.
Before launching BTS Site Manager, if the PC is connected to the FSM LMP port,
specify your PC's network settings to match the following settings:
–
RF sharing WCDMA-GSM
•
•
–
IP address: 192.168.255.126 (WCDMA)
IP address: 192.168.255.130 (GSM)
RF sharing WCDMA-LTE
either
•
•
IP address: 192.168.255.130 (WCDMA)
IP address: 192.168.255.126 (LTE)
or
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Commissioning RF sharing
Configuring RF Sharing
•
•
g
IP address: 192.168.255.126 (WCDMA)
IP address: 192.168.255.130 (LTE)
Note: A different IP address for each technology must be used.
Procedure
1
Start commissioning.
In case of FSMF go through the TRS commissioning first and tick the Enable FSM
EIF2 as RP3-01 interface check box.
Figure 6
WCDMA - Enable EIF2 as RP3-01 interface
Select Commissioning, Target: BTS, Commissioning type:
Select from the available options
•
•
if the WCDMA BTS has not been commissioned at all:
Template/Planned/Manual
if the WCDMA BTS has already been commissioned: Reconfiguration
Step result
The BTS Settings page appears. Note that the Slave technology (GSM or LTE)
System Module is not detected yet.
2
Proceed to BTS Synchronization settings.
When Sync Hub Direct Forward is not in use, apply the standard procedure
described in the technology-specific documents.
In order to use RG602339/RAN3001/LTE1710: Sync Hub Direct Forward, apply the
following settings:
•
for Sync Hub Master:
Configure synchronization settings according to the synchronization source to be
used.
–
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–
Select either the Phase synchronization or the Frequency
synchronization according to the desired configuration.
Synchronization input settings
•
•
–
•
–
–
–
g
Synchronization output settings
Select the Forward synchronization in co-siting and the PPS
synchronization output in use in HO mode check boxes if the
synchronization is intended to be forwarded to the next BTS in the chain.
for Sync Hub Slave:
–
g
For Phase Synchronization
Select the External GPS as reference source from the 1PPS
synchronization input source in use drop-down list.
Select the GPS cable length option and provide the correct cable length.
For Frequency Synchronization
Select either the External GPS as reference source from the 1PPS
synchronization input source in use drop-down list or the External
2.048 MHz synchronization in use or the Transmission
synchronization (TDM/SyncE/ToP) in use.
Network synchronization mode
Select the Phase synchronization from the network synchronization
mode drop-down list.
Synchronization input settings
Select the Sync Hub Master BTS as reference source from the 1PPS
synchronization input source in use drop-down list.
Tick the 1PPS source line delay and enter the value; 1PPS source line
delay is calculated based on the following formula:
1PPS source line delay = 5.4 ns per meter cable (which connects the Synch
Hub Master to the Synch Hub Slave) + 8 ns for Sync Out (or 30 ns if GSM
SM is ESMB/C) + 12 ns for Sync In (or 30 ns if GSM SM is ESMB/C)
If there are further elements connected to a synchronization chain after a
Sync Hub Slave, then select the Forward synchronization in co-siting and
the PPS synchronization output in use in HO mode check boxes.
Note: The 1PPS source line delay is applied from the Sync Hub Slave to be configured
up to the Sync Hub Master, which can span over one or more other Sync Hub Slaves in
case they are connected in between. The 1PPS source line delay to be compensated
needs in this case the accumulative value (that is accumulated Cable Length and
adding all Sync Out, Sync In connections in between).
Note: Do not define a secondary sync source for Sync Hub Slaves. Otherwise, Sync
Hub Slave might not be able to maintain its local phase relationship to the Sync Hub
Master anymore, when the Sync Hub Master is losing its reference clock. In this case
the Radio Slave might discontinue services allocated to the shared RF Module.
Figure 7: WCDMA - BTS Synchronization settings for Sync Hub Master with GPSPhase as Sync Source shows exemplary settings for Sync Hub Master.
Figure 8: WCDMA - BTS Synchronization settings for Sync Hub Slave shows
exemplary settings for Sync Hub Slave.
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3
Configuring RF Sharing
Figure 7
WCDMA - BTS Synchronization settings for Sync Hub Master with
GPS-Phase as Sync Source
Figure 8
WCDMA - BTS Synchronization settings for Sync Hub Slave
Proceed to Concurrent Mode Settings.
Tick the RF sharing enabled check box, choose the shared technologies (3G-2G or
3G-LTE), enter the product code and serial number of the Slave System Module, and
choose the shared RFMs/RRHs. The parameter Synchronization master is
configurable from RU50 EP1 onwards. When Sync Hub Direct Forward is in use,
select Synchronization Hub from the Synchronization master drop-down list.
When Sync Hub Direct Forward is not in use, select FSMx 1.
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Figure 9: WCDMA - Concurrent Mode Settings shows exemplary settings for 3G-2G
RF sharing without using Sync Hub Direct Forward.
g
Note: At least one RFM/RRH must be selected as shared.
Figure 9
4
WCDMA - Concurrent Mode Settings
Proceed to Local Cell Resources.
Remember the settings on this page, as they affect the later Slave technology
settings. Figure 10: WCDMA - Local Cell Resources shows exemplary settings for
3G-2G RF sharing.
g
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Note: Make sure that the power sums of both WCDMA carriers and LTE carriers/GSM
TRXs does not exceed the RFM's/RRHs' maximum output power. (Except when
BSS21507: Flexible MCPA TX Power Pooling is activated in GSM.)
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Commissioning RF sharing
Configuring RF Sharing
Figure 10
5
WCDMA - Local Cell Resources
Proceed to WCDMA Carrier Candidates and Local Cell Group Settings.
Enter the UARFCN channel value for each Local Cell (use the same value as
defined in the RNC). These UARFCN values are stored in the SCF and are later
used for the Slave technology commissioning. Thus incorrect values may cause TRX
object allocation issues in GSM.
g
Note: Make sure that all WCDMA carriers along with GSM TRXs/LTE carriers are
within the RFMs'/RRHs' bandwidths.
Note that TCH-TRXs have to be allocated at least 2 MHz away from the WCDMA cell's
center frequency. Thus overlapping the edges of WCDMA cell bandwidth is allowed.
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Commissioning RF sharing
Proceed to Antenna Line Settings.
Antenna settings
In WCDMA-LTE RF sharing for LTE dedicated antenna lines, you can set the
following parameters:
•
•
•
VSWR minor fault
VSWR major fault
Additional RX gain
WCDMA-LTE RF sharing with dedicated power amplifiers is introduced by the
LTE2273: Classical WCDMA-LTE RF-sharing with dedicated Power Amplifiers
feature.
MHA settings
If CWA mode MHAs are used in the configuration, MHA product code and serial
number need to be filled in. Without these parameters, GSM commissioning cannot
be completed.
7
Proceed to Radio Module External Fault and Control Settings.
Every Radio Module external alarm can be commissioned for either or both of the
two technologies. For example, if an alarm is commissioned for WCDMA, it is visible
from the WCDMA side only.
In WCDMA–LTE and WCDMA–GSM RF sharing, Radio Module external controls can
be configured only from WCDMA BTS and in LTE–GSM RF sharing, only from LTE
BTS.
g
8
Note: Radio Module External Faults and Controls are supported from Flexi HW 2.2
onwards.
Proceed to the last page - Send Parameters.
Select the appropriate Send option:
Select from the available options
•
•
if the WCDMA BTS has not been commissioned, select: All parameters
if the WCDMA BTS has been already commissioned, select: Only changes
Click Send Parameters.
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Commissioning RF sharing
Figure 11
Configuring RF Sharing
WCDMA - Send Parameters
Step result
The WCDMA System Module resets and the RF sharing is activated.
Postrequisites
Check the applied settings carefully. If there is an error with the synchronization settings,
a BTS might be unable to synchronize and cause RF Modules to be undetectable. Recommissioning is in this case only possible either remotely via NetAct or by uncommission a BTS first.
In case of WCDMA – GSM RF sharing and if GSM is intended to be Sync Hub Master,
WCDMA BTS cannot be commissioned to Sync Hub Slave without an incoming sync
reference from GSM. GSM, however, will not transmit the sync towards WCDMA until
GSM has been commissioned, therefore, WCDMA SCF is needed at the beginning of
the process. As a result, the WCDMA SCF file must be created in OFFLINE mode or via
NetAct in order to complete GSM commissioning and enable synchronization towards
WCDMA, and to further complete WCDMA commissioning.
5.2 Commissioning LTE for RF Sharing
Steps to commission LTE for RF sharing WCDMA-LTE or LTE-GSM.
Purpose
Follow these steps to commission LTE for:
•
•
RF sharing LTE-GSM
RF sharing WCDMA-LTE
Make sure that all the appropriate steps in the RF Sharing deployment scenarios section
have been completed.
g
36
Note: The RF sharing is a part of the commissioning procedure. Commissioning
procedures are described in detail in the technology-specific documents. The RF
sharing commissioning steps have to be taken in addition to the technology-specific
steps.
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g
Commissioning RF sharing
Note: From RL70 onwards, when RF sharing WCDMA-LTE is activated, LTE System
Module resets itself and changes its IP addresses (local M-plane IP address is changed
from 192.168.255.129 to 192.168.255.127). After the reset the BTS Site Manager
reconnects to the same IP address of the previous session (.129) used prior to the
reset. However, after the reset LTE (Slave technology) is not at the .129 address
anymore, and the connection is actually established to the WCDMA (Master) System
Module. Therefore, the disconnection and the reconnection need to be done again
either using the local connection probing option, which gives the user a selection of
available System Modules, or using the correct local M-plane IP address of LTE System
Module directly.
When RF sharing WCDMA-LTE is setup, the same IP address cannot be shared by
multiple computers.
g
Note: In RF sharing configurations, only certain Master-Slave BTS SW combinations,
SW upgrade paths and configurations are tested, recommended and officially
supported. Using any other SW combinations, upgrade path or configuration might
cause unexpected problems.
g
Note: Configuring and controlling of antenna line is performed from the Master
technology’s BTS Site Manager. Thus, the ALD is not detected at LTE if LTE is Slave
technology and if ALD is connected to shared RFM. ALD is detected only by Master
technology and ALD objects are not shown in LTE BTS Equipment view.
Preconditions:
•
•
•
•
•
•
•
The BTS Site Manager is running and connection to the BTS is established. Always
use the matching BTS Site Manager version, considering the running BTS SW
version.
The running BTS SW in the System Module is the correct version before
commissioning. Upgrade the BTS SW if required.
The RFMs/RRHs are correctly detected if LTE is Master technology or if LTE has
been commissioned earlier.
The ALD is correctly detected at LTE if LTE is Slave technology and if ALD is
connected to LTE dedicated RFM.
The ALD is correctly detected at LTE if LTE is Master technology and if ALD is
connected to shared or LTE dedicated RFM.
There are no unexpected alarms.
Before launching BTS Site Manager, if the PC is connected to the FSM LMP port,
specify your PC's network settings to match the following settings:
–
RF sharing LTE-GSM
•
•
–
IP address: 192.168.255.126 (LTE)
IP address: 192.168.255.130 (GSM)
RF sharing WCDMA-LTE
either
•
•
IP address: 192.168.255.130 (WCDMA)
IP address: 192.168.255.126 (LTE)
or
•
•
DN09172017 Issue: 13
IP address: 192.168.255.126 (WCDMA)
IP address: 192.168.255.130 (LTE)
© 2018 Nokia
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Commissioning RF sharing
g
Configuring RF Sharing
Note: A different IP address for each technology must be used.
Procedure
1
Start commissioning.
In case of FSMF go through the TRS commissioning first and check the "Enable
EIF2 as RP3-01 interface".
Figure 12
LTE - Enable EIF2 as RP3-01 interface
Select Commissioning, Target: BTS, Commissioning type:
Select from the available options
•
•
when the SCF has been prepared before: Template
when there is no SCF file: Manual
Step result
The BTS Settings page appears. Note that the other technology (GSM or WCDMA)
System Module is not detected yet.
2
Proceed to BTS Synchronization settings.
When Sync Hub Direct Forward is not in use, apply the standard procedure
described in the technology-specific documents.
In order to use RG602339/RAN3001/LTE1710: Sync Hub Direct Forward, apply the
following settings:
•
for Sync Hub Master:
Configure synchronization settings according to the synchronization source to be
used.
–
–
Network synchronization mode
Select either the Phase synchronization or the Frequency
synchronization according to the desired configuration.
Synchronization input settings
•
38
For Phase Synchronization
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Configuring RF Sharing
Commissioning RF sharing
•
–
•
–
–
–
g
g
Synchronization output settings
Select the Forward synchronization in co-siting and the PPS
synchronization output in use in HO mode check boxes if the
synchronization is intended to be forwarded to the next BTS in the chain.
for Sync Hub Slave:
–
g
Select the External GPS as reference source from the 1PPS
synchronization input source in use drop-down list.
Select the GPS cable length option and provide the correct cable length.
For Frequency Synchronization
Select either the External GPS as reference source from the 1PPS
synchronization input source in use drop-down list or the External
2.048 MHz synchronization in use or the Transmission
synchronization (TDM/SyncE/ToP) in use.
Network synchronization mode
Select the Phase synchronization from the network synchronization
mode drop-down list.
Synchronization input settings
Select the Sync Hub Master BTS as reference source from the 1PPS
synchronization input source in use drop-down list.
Tick the 1PPS source line delay and enter the value; 1PPS source line
delay is calculated based on the following formula:
1PPS source line delay = 5.4 ns per meter cable (which connects the Synch
Hub Master to the Synch Hub Slave) + 8 ns for Sync Out (or 30 ns if GSM
SM is ESMB/C) + 12 ns for Sync In (or 30 ns if GSM SM is ESMB/C)
If there are further elements connected to a synchronization chain after a
Sync Hub Slave, then select the Forward synchronization in co-siting and
the PPS synchronization output in use in HO mode check boxes.
Note: The 1PPS source line delay is applied from the Sync Hub Slave to be configured
up to the Sync Hub Master, which can span over one or more other Sync Hub Slaves in
case they are connected in between. The 1PPS source line delay to be compensated
needs in this case the accumulative value (that is, accumulated Cable Length and
adding all Sync Out, Sync In connections in between).
Note: Do not define a secondary sync source for Sync Hub Slaves. Otherwise, Sync
Hub Slave might not be able to maintain its local phase relationship to the Sync Hub
Master anymore, when the Sync Hub Master is losing its reference clock. In this case
the radio slave might discontinue services allocated to the shared RF Module.
Note: GSM as Sync Hub Master is not supported with LTE–GSM RF sharing.
LTE is always Sync Hub Master in LTE–GSM RF sharing environment and GSM is
always Sync Hub Slave. LTE can be Sync Hub Slave only in a WCDMA–LTE RF
sharing environment.
Figure 13: LTE - BTS Synchronization settings for Sync Hub Master with GPS-Phase
as Sync Source shows exemplary settings for Sync Hub Master.
Figure 14: LTE - BTS Synchronization settings for Sync Hub Slave shows exemplary
settings for Sync Hub Slave.
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Configuring RF Sharing
Figure 13
LTE - BTS Synchronization settings for Sync Hub Master with GPSPhase as Sync Source
Figure 14
LTE - BTS Synchronization settings for Sync Hub Slave
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Commissioning RF sharing
Proceed to Concurrent Mode Settings.
Tick the RF sharing enabled check box, choose the shared technologies (LTE-2G or
LTE-3G), enter the product code and serial number of the other technology System
Module, and choose the shared RFMs/RRHs. The parameter Synchronization
master is configurable from RL70 onwards. When Sync Hub Direct Forward is in
use, select Synchronization Hub from the Synchronization master drop-down list.
When Sync Hub Direct Forward is not in use, select FSMx 1 for LTE-2G and 3G
system module for LTE-3G. In LTE-3G RF sharing configuration select Optical IF
for 3G System Module from RL70 onwards.
Figure 15: LTE - Concurrent Mode Settings for LTE-2G shows exemplary settings for
LTE-GSM RF sharing without using Sync Hub Direct Forward.
Figure 16: LTE - Concurrent Mode Settings for LTE-3G shows exemplary settings for
WCDMA-LTE RF sharing without using Sync Hub Direct Forward.
g
Note: At least one RFM/RRH must be selected as shared.
Figure 15
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LTE - Concurrent Mode Settings for LTE-2G
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Commissioning RF sharing
Configuring RF Sharing
Figure 16
4
LTE - Concurrent Mode Settings for LTE-3G
Proceed to Cell Resources.
In case of RF sharing LTE-GSM, remember the settings on this page, as they affect
the later settings in GSM.
In case of RF sharing WCDMA-LTE, calculate the available power, taking into
account the values already commissioned to WCDMA.
5
Proceed to LTE Carriers.
Enter the EARFCN channel value for each Local Cell. These EARFCN values are
stored in the SCF and is later used for the GSM commissioning. Select the
appropriate Bandwidth. Ensure the Bandwidth is supported by the used HW
configuration. For details see Classical RF Sharing Released Configurations.
g
6
Note: Make sure that all LTE carriers along with GSM TRXs/WCDMA carriers are
within the RFM's/RRH's UL/DL instantaneous bandwidth, and that they are not
overlapping.
Proceed to Radio Module External Fault and Control Settings.
Every Radio Module alarm can be commissioned for either or both of the two
technologies. For example, if an alarm is commissioned for LTE, it is visible from the
LTE side only.
In WCDMA–LTE and WCDMA–GSM RF sharing, Radio Module external controls can
be configured only from WCDMA BTS and in LTE–GSM RF sharing, only from LTE
BTS.
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Commissioning RF sharing
g
Note: Radio Module External Faults and Controls are supported from Flexi HW 2.2
onwards.
7
Proceed to the last page - Send Parameters.
Select Send: All parameters. Save Parameters, if the SCF is needed for later GSM
commissioning, then Send Parameters.
Step result
The LTE System Module resets and the RF sharing is activated.
Postrequisites
Check the applied settings carefully. If there is an error with the synchronization settings,
a BTS might be unable to synchronize and cause RF Modules to be undetectable. Recommissioning is in this case only possible either remotely via NetAct or by uncommission a BTS first.
5.2.1 LTE-GSM RF sharing parameter configuration - NOTEs
Instances of the Managed Object NOTE must be filled in only when using NetAct and
when there is an RF Module shared between LTE and GSM. When the Network Element
Manager is used, NOTEs are filled in automatically.
Managed Object NOTE - key terms
LTE backward conversion to GSM requires special handling due to incompatible
Managed Object Class (MOC) ID ranges. In order to preserve mappings between the
two info models, the use of the NOTE MOC is required. The parameters within the NOTE
MOC are defined as follows:
•
•
•
attribute.attribName - specific name defined by Nokia to indicate the object
type in GSM
attribute.attrValue - ID to be used in GSM
describedObjDN - LTE object that maps to the GSM as defined in the NOTE
Managed Object NOTE - settings
If the RF sharing enabled parameter is set to true and the GSM EDGE radio
access network parameter is set to true, the following NOTE instances must be
configured:
•
For the GSM System Module:
–
–
–
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attribute.attribName is set to 2G_SMOD.
attribute.attrValue is set to a value within the range of 1 and 3 and does
not overlap with the value of the LTE System module identifier
parameter.
Described object distinguish name is the DN identifier of the
corresponding GSM System Module.
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Commissioning RF sharing
•
For each shared RF Module:
–
–
–
•
–
–
–
–
atrrib.attribName is set to 2G_MHA.
attrib.attrValue is set to a value within the range of 1 and 255 and unique
amongst NOTEs with atrrib.attribName set to 2G_MHA.
Described object distinguish name is the DN identifier of the
corresponding MHA.
For each shared Remote Electrical Tilt (RET):
–
–
–
g
atrrib.attribName is set to 2G_ANTL.
attrib.attrValue is set to a value within the range of 1 and 216 and unique
amongst NOTEs with atrrib.attribName set to 2G_ANTL.
Described object distinguish name is the DN identifier of the
corresponding antenna.
For each shared Mast Head Amplifier (MHA):
–
•
atrrib.attribName is set to 2G_RMOD.
attrib.attrValue is set to a value within the range of 1 and 36 and is unique
amongst NOTEs with atrrib.attribName set to 2G_RMOD.
Described object distinguish name is the DN identifier of the
corresponding RF Module.
For each shared antenna:
–
•
Configuring RF Sharing
atrrib.attribName is set to 2G_RET.
attrib.attrValue is set to a value within the range of 1 and 255 and unique
amongst NOTEs with atrrib.attribName set to 2G_RET.
Described object distinguish name is the DN identifier of the
corresponding RET.
Note: The Described object distinguish name parameter cannot be
referencing a non-shared object, that is a dedicated RF Module, antenna connected to
a dedicated RF Module, or an MHA/RET detected from a dedicated RF Module.
5.2.2 Converting LTE SCF backwards for GSM commissiong for
RF sharing - online mode
Steps for exporting a new GSM backup Site Configuration File (SCF). The procedure is
performed online with Network Element Manager.
Before you start
•
LTE site is working with the latest Service Operations, Administrations and
Maintenance (SOAM) information model software in use.
LTE can previously be sharing RF Modules with one of the following:
–
–
–
–
44
GSM prior to SOAM.
GSM in SOAM but with configuration changes to shared objects yet to be made.
newly created LTE to be shared with GSM.
an existing dedicated LTE with GSM added.
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Configuring RF Sharing
•
Commissioning RF sharing
GSM to be commissioned is a single RAT BTS.
Procedure
1
Start Network Element Manager in an online mode.
2
Activate LTE-GSM BTS RF sharing.
For complete procedure instructions, see Commissioning LTE for RF sharing.
3
Configure the ID mapping between LTE and GSM models.
4
Send the configuration file to the LTE BTS.
Step result
LTE site is successfully commissioned and is on air.
5
Request the LTE-GSM sharing SCF export from the BTS supporting LTE.
6
Generate a new SCF with the Network Element Manager backward conversion tool.
Figure 17
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Selecting Backup 2G Commissioning File
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Commissioning RF sharing
Figure 18
Configuring RF Sharing
Saving Backup 2G Commissioning File
The process is a migration from the current model to legacy GSM compatible format
for required MO and parameters with the use of the model mapping information
configured in the Activate the LTE-GSM BTS RF sharing step.
Step result
Network Element Manager provides configuration files with objects required by GSM
in a legacy Object Model format to the user.
Result
•
•
The operator downloads a file containing objects required by GSM in the legacy
object model RAML 2.1 format as in release FL16A and prior.
The operator is able to upload additional LTE objects to the GSM BTS of sharing
configuration and to successfully configure an RF sharing site.
5.2.3 Converting LTE SCF backwards for GSM commissioning
for RF sharing - offline mode
Steps for exporting a new GSM backup Site Configuration File (SCF). The procedure is
performed offline with NetAct or Network Element Manager.
Before you start
GSM to be commissioned is a single RAT BTS.
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Commissioning RF sharing
Procedure
1
Start NetAct or Network Element Manager in an offline mode.
2
Activate LTE-GSM BTS RF sharing.
For complete procedure instructions, see Commissioning LTE for RF sharing.
3
Configure the ID mapping between LTE and GSM models.
4
Generate the SCF for both LTE and GSM.
Select from the available options
•
When using Network Element Manager: click LTE and GSM in the dialogue
window:
Figure 19
Creating Commissioning File for LTE-GSM RF sharing - Network
Element Manager offline mode
and save the files:
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Commissioning RF sharing
Configuring RF Sharing
Figure 20
Saving Commissioning File for LTE-GSM RF Sharing - Network
Element Manager offline mode
When using NetAct:
•
–
–
Save the LTE SCF in the SOAM format.
Manually generate the 16A format.
5
g
Note: This step is applicable when using NetAct
Apply the SOAM format file to LTE BTS.
Step result
LTE BTS accepts the offline file and the LTE site is On air.
6
g
Note: This step is applicable when using NetAct
Apply the 16A format file to the GSM BTS.
The file contains objects required by GSM in the legacy object model RML 2.1 format
as in release FL16A and prior.
Result
The operator is able to upload additional LTE objects to the GSM BTS of sharing
configuration and to successfully configure an RF sharing site.
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5.3 Commissioning GSM for RF Sharing
Steps to commission GSM for RF sharing WCDMA-GSM or LTE-GSM.
Purpose
Follow these steps to commission GSM (the Slave technology) to:
•
•
RF sharing WCDMA-GSM
RF sharing LTE-GSM
Make sure that all the appropriate steps in the RF Sharing deployment scenarios section
have been completed.
g
g
Note: GSM as Sync Hub Master is only supported with WCDMA-GSM RF sharing.
Note: The RF sharing is a part of the commissioning procedure. Commissioning
procedures are described in detail in the technology-specific documents. The RF
sharing commissioning steps have to be taken in addition to the technology-specific
steps.
g
Note: In RF sharing configurations, only certain Master-Slave BTS SW combinations,
SW upgrade paths and configurations are tested, recommended and officially
supported. Using any other SW combinations, upgrade path or configuration might
cause unexpected problems.
g
Note: In GSM RF sharing configuration, it is mandatory to have a 2G sector on the
shared RFMs.
Preconditions:
•
•
•
•
•
•
•
The BTS Site Manager is running and connection to the BTS is established. Always
use the matching BTS Site Manager version, considering the running BTS SW
version.
Appropriate SW is downloaded.
The running BTS SW in the System Module is the correct version before
commissioning. Upgrade the BTS SW if required.
The RFMs/RRHs and ALDs are correctly detected (if the GSM has been
commissioned earlier).
Master technology SCF is available to complete GSM commissioning in shared
mode. In LTE-GSM RF sharing, the master technology SCF is saved with the
Backup 2G Commissioning File option.
There are no unexpected alarms.
Before launching BTS Site Manager, if the PC is connected to the FSM LMP port,
specify your PC's network settings to match the following settings:
–
RF sharing WCDMA-GSM
•
•
–
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IP address: 192.168.255.126 (WCDMA)
IP address: 192.168.255.130 (GSM)
RF sharing LTE-GSM
© 2018 Nokia
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Commissioning RF sharing
Configuring RF Sharing
•
•
g
IP address: 192.168.255.126 (LTE)
IP address: 192.168.255.130 (GSM)
Note: A different IP address for each technology must be used.
Procedure
1
Start commissioning.
Select Commissioning Wizard, Change settings manually.
2
Proceed to Site Specific Information.
When Sync Hub Direct Forward is not in use, apply the standard procedure
described in the technology-specific documents.
When Sync Hub Direct Forward is in use, apply the following settings:
Select from the available options
•
•
for Sync Hub Master:
Configure synchronization settings as related to the synchronization source to be
used (no special impact due to RF sharing and Sync Hub Direct Forward).
Only Timing over Packet with phase synchronization or a GPS receiver is
supported as synchronization source, when GSM operates as Sync Hub Master.
for Sync Hub Slave:
Sub-steps
a) Select the 1PPS+ToD TSIP format from the BTS Sync Source drop-down list.
b) Enter the Cable propagation delay value.
This value is calculated based on the following formula:
Cable propagation delay = 5.4 ns per meter cable (which connects the Synch
Hub Master to the Synch Hub Slave) + 8 ns for Sync Out (or 30 ns if GSM SM is
ESMB/C) + 12 ns for Sync In (or 30 ns if GSM SM is ESMB/C).
c) Apply the following configurations at BSC:
•
g
g
50
Use command ZEFM:BCF ID:CS,:; to configure a GSM BTS as Sync
Hub Slave.
Note: Do not activate the feature
BSS101563: GSM Synch Recovery with RF Sharing if the Packet Abis is in use
and if GSM SM is ESMB/C, otherwise the BTS resets if 1PPS+ToD loss
happens.
Note: The BSS101563: GSM Synch Recovery with RF Sharing feature for FSMF
GSM SM is supported only together with Sync Hub Direct Forward.
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•
•
•
For CS and SENA parameters, see the tables in the Sync Hub related BSC
MML commands to set right Sync Mode for GSM BTS section.
Use command
ZEXI:LMUA=ID:TRE65535,BCF ID:FNO=0,LTO=0,FMU=T,LTD=0;
to configure phase offsets to 0 and TRE ID to not applicable.
Use command ZEFO to check correct settings.
Example commands for BCF = 167 after entering BCF control command line
with ZEFO command:
BASE CONTROL FUNCTION HANDLING COMMAND <EF_>
<
BCF .... MASTER CLOCK BCF
LMU .... LOCATION MEASUREMENT UNIT
BWLMU... WIDEBAND CODE DIVISION MULTIPLE ACESS LOCATION
MEASUREMENT UNIT
IWLMU... INDEPENDENT WCDMA LMU
LAB .... LMU-ABIS
BSSTOP . BSS TOP PHASE
PCM .... INDEPENDENT MODE BCF
NONE ... REMOVE CLOCK SOURCE
*/
EFM:167:CS=LMU
/*
IDENTIFY BCF PARAMETERS
PARAMETER NAMES:
… */
EFM:167:CS=LMU,:;
EXI:LMUA=167: TRE65535,BCF167:FNO=0,LTO=0,FMU=T,LTD=0;
FlexiBSC XYZ
LMU AREA PARAMETERS:
2015-01-27
13:51:15
LMU AREA IDENTIFICATION................(LMUA)...
167
TRANSMISSION EQUIPMENT..................(TRE)... 65535 (NOT
USED)
BASE CONTROL FUNCTION ID................(BCF)...
167
FRAME NUMBER OFFSET.....................(FNO)...
0
LMU TSL FRAME NUMBER OFFSET.............(LTO)...
0
LMU FNO 26-MULTIPLIER USAGE.............(FMU)...
T
LMU TSL FN DELAY........................(LTD)...
0
COMMAND EXECUTED
EFO:167:;
BASE CONTROL FUNCTION BCF-0167 DATA
…
CLOCK SOURCE .................(CS).... LMU or LAB
SYNCHRONIZATION ENABLED ......(SENA).. T
SYNCHRONIZATION MODE .........(SM).... BSSSYNCH
…
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Configuring RF Sharing
For more details, see Sync Hub related BSC MML commands to set right Sync
Mode for GSM BTS section.
Step example
Exemplary settings for Sync Hub Slave.
Figure 21
3
GSM - Site Specific Information
Proceed to Hardware Configuration.
Select Specify from file and browse for WCDMA/LTE SCF.
If the shared RFMs'/RRHs' climate-control has not been set in WCDMA or LTE
commissioning, a window appears, press Close to ignore it.
In case of WCDMA-GSM RF sharing and if GSM is intended to be Sync Hub Master,
WCDMA BTS cannot be commissioned to Sync Hub Slave without an incoming sync
reference from GSM. GSM, however, will not transmit the sync towards WCDMA until
GSM has been commissioned, therefore, WCDMA SCF is needed at the beginning
of the process. As a result, the WCDMA SCF file must be created in OFFLINE mode
or via NetAct in order to complete GSM commissioning and enable synchronization
towards WCDMA, and to further complete WCDMA commissioning.
4
Proceed to Module Configuration.
The shared modules are shown (taken from the Master technology's SCF). If
necessary, add the GSM-dedicated RFMs/RRHs.
When Sync Hub Direct Forward is in use, select the Sync hub direct forward check
box and tick the 1PPS clock output in holdover check box. In case of a Sync Hub
Slave and further connected elements to the Sync Chain, also select Forward 1PPS
clock.
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Temporary Sync Master role can be enabled on same window, so GSM BTS can
take control on radio if the Radio Master goes down, irrespective GSM is Sync Hub
Master or Slave. Temporary Sync Master option remains disable for non SHDF
configurations since it is supported only together with Sync Hub Direct Forward when
GSM SM is FSMF.
Figure 22: GSM - Module Configuration for Sync Hub Master shows exemplary
settings for Sync Hub Master.
Figure 23: GSM - Module Configuration for Sync Hub Slave shows exemplary
settings for Sync Hub Slave.
Figure 24: GSM - Module Configuration for Temporary Sync Master shows
exemplary settings for Temporary Sync Master in Flexi Multiradio 10 BTS.
Figure 22
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GSM - Module Configuration for Sync Hub Master
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Commissioning RF sharing
5
g
54
Configuring RF Sharing
Figure 23
GSM - Module Configuration for Sync Hub Slave
Figure 24
GSM - Module Configuration for Temporary Sync Master
Proceed to Local Sectors Settings.
Note: “Total max. Capacity” shows a value for both shared technologies.
Figure 25: GSM - Local Sector Settings shows exemplary settings for LTE-2G RF
sharing. In the example, LTE uses 8 W per pipe out of available 60 W - the power left
for GSM is 52 W, which allows for five TRXs with 10 W each.
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Commissioning RF sharing
Figure 25
6
GSM - Local Sector Settings
Proceed to FRM External Alarm and Control Settings.
Every Radio Module alarm can be commissioned for either or both of the two
technologies. For example, if an alarm is commissioned for GSM, it is visible from the
GSM side only.
In WCDMA–LTE and WCDMA–GSM RF sharing, Radio Module external controls can
be configured only from WCDMA BTS and in LTE–GSM RF sharing, only from LTE
BTS.
7
Proceed to Transmission Synchronization Settings.
Transmission-related parameters are commissioned according to the actual
transmission configuration used.
In case of EX, if GSM transmission is IP-based, set Sync Input as synchronization
source from Priority List, otherwise, if GSM transmission is Legacy Abis, select
Synchronization Priority List according to the used transmission sync source (the
most commonly used option with Legacy Abis is RX Clock IF 1 E1/T1 1).
In case of GF, if Transport Clock is available, use it for transport synchronization,
otherwise, use System Clock for transport synchronization. The table below lists the
samples of configurations at Synchronization menu in GF.
Table 4
Sample configurations in TRS Priority List in GF
Mode
TDM/PAoTDM
Sample configurations
Rx Clock
SyncIn
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Commissioning RF sharing
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Table 4
Sample configurations in TRS Priority List in GF (Cont.)
Mode
Sample configurations
Internal Timing
PAoPSN (if Transport Clock SyncE is
available)
SyncE
SyncIn
Internal Timing
PAoPSN (if Transport Clock Rx Clock is
available)
Rx Clock
SyncIn
Internal Timing
PAoPSN Mode (if no Transport Clock is
available)
8
SyncIn
Internal Timing
Proceed to the last page - Site Commissioning File.
Select Send SCF.
Step result
The GSM System Module resets and the RF sharing is activated.
5.3.1 Sync Hub related BSC MML commands to set right Sync
Mode for GSM BTS
Appendix for Sync Hub configurations at BSC.
g
Note: From the BSC perspective the synchronization to a Sync Hub Master is seen as
a kind of GPS sync source.
The following Sync Hub related BSC MML commands can be executed to configure the
right Sync Mode for a GSM BTS (ESMB/C or FSMF):
For the GPS Sync, LMUA must be configured for GSM BTS with the recommended
parameters listed in this section.
ZEXA:LMUA=xxx:TRE65535,BCFXX:FNO=0,LTO=0,FMU=T,LTD=0;
BSC MML command ZEFM (MODIFY BASE CONTROL FUNCTION PARAMETERS):
ZEFM:XXX:CS=
(XXX = BCF ID)
Use SENA command to set right setting for Sync:
ZEFM:XXX:SENA=
56
(XXX = BCF ID)
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Table 5
Commissioning RF sharing
Clock source (CS) and SENA parameters values for ESMB/C GSM SM
GSM ESMB/C (BSC settings)
Sync mode
Parameters = value
GSM SHS (Freq sync in Master)
SENA=F, CS=NONE
GSM SHS (Phase sync in Master) SENA=T, CS=LMU (Packet Abis) or LAB (Legacy Abis)
Also LMU needs to be configured (ZEXA).
GSM SHM, GPS-P
SENA=T, CS=LMU (Packet Abis) or LAB (Legacy Abis)
Also LMU needs to be configured (ZEXA).
GSM SHM, ToP-P
SENA=T, CS=BSSTOP
GSM SHM, ToP Freq
SENA=F, CS=NONE
GSM SHM, PDH Freq
SENA=F, CS=PCM
Table 6
Clock source (CS) and SENA parameters values for FSMF GSM SM
GSM FSMF (BSC settings)
Sync mode
Parameters = value
GSM SHS (Freq sync in Master)
SENA=F, CS=NONE
GSM SHS (Phase sync in Master) SENA=T, CS=BSSTOP
GSM SHM, GPS-P
SENA=T, CS=BSSTOP
GSM SHM, ToP-P
SENA=T, CS=BSSTOP
GSM SHM, ToP Freq
SENA=T, CS=TOP
GSM SHM, PDH Freq
SENA=F, CS=PCM
Use ZEFO command to check right settings.
Example:
VALID SETTINGS FOR GPS PHASE
CLOCK SOURCE .................(CS).... LMU
SYNCHRONIZATION ENABLED ......(SENA).. T
SYNCHRONIZATION MODE .........(SM).... BSSSYNCH
EXTERNAL 1PPS SYNC SOURCE ....(EPPS).. 3 (GPS RECEIVER)
VALID SETTINGS FOR TOP FREQUENCY
CLOCK SOURCE .................(CS).... -SYNCHRONIZATION ENABLED ......(SENA).. F
SYNCHRONIZATION MODE .........(SM).... UNSYNCH
EXTERNAL 1PPS SYNC SOURCE ....(EPPS).. 0 (DISABLED)
5.4 Recommissioning RF Sharing to change particular
settings in Master technology
Steps to recommission RF Sharing WCDMA-GSM or LTE-GSM to change particular
Master technology BTS settings affecting Slave technology BTS.
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Commissioning RF sharing
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Purpose
This section describes the procedure that must be followed when changing any of the
following settings in RF Sharing WCDMA-GSM and LTE-GSM of the Master technology
of already commissioned site. Changes in some of the WCDMA/LTE settings in `Table 7:
WCDMA/LTE settings forcing the GSM recommissioning must always be applied in GSM
via (re)commissioning to ensure correct system level operation. The changes in some
other settings are only needed for maintenance purposes that make it easier to
troubleshoot any problems later on (the corresponding views are grayed out in GSM BTS
Site Manager).
Table 7
WCDMA/LTE settings forcing the GSM recommissioning
WCDMA
LTE
BTS Synchronization Settings
Concurrent Mode Settings
Local Cell Resources - Antenna settings
Local Cell Resources - Carrier Power settings
Local Cell Resources - MIMO settings
WCDMA Carrier Candidates and Local Cell
Group Settings - WCDMA carrier frequency
(UARFCN)**
LTE Carriers - Downlink (Tx) Carriers and LTE
Bandwidth**
Antenna Line Management*
Antenna Line Settings*
MHA settings*
RET settings*
* The corresponding views in GSM BTS Site Manager are grayed out.
**Also frequencies used in BSC should be checked and updated if needed.
Procedure
1
Recommission WCDMA/LTE to change the settings.
Select the target BTS and use the Reconfiguration option in WCMDA/LTE BTS Site
Manager.
2
Click Send Parameters.
Step result
WCDMA/LTE site resets.
3
Save the new WCDMA/LTE BTS SCF file to be used in GSM.
Select File in the menu bar in WCDMA/LTE BTS Site Manager, choose Backup
Commissioning Files... and save the BTS SCF file.
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Commissioning RF sharing
Recommission GSM using the WCDMA/LTE SCF.
Use Change settings manually, go to Hardware Configuration view and browse
the WCDMA/LTE SCF file.
Check the settings in each window and click Send SCF button to complete the
procedure.
Step result
GSM BTS resets.
5
Reset WCDMA/LTE BTS.
Step result
WCDMA/LTE site, GSM site, and all RF Modules reset.
Result
RF Sharing operates again using the new settings.
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Reverting RF sharing site to dedicated site
Configuring RF Sharing
6 Reverting RF sharing site to dedicated site
6.1 Reverting RF sharing site to dedicated GSM site
Steps to revert an existing GSM-WCDMA or GSM-LTE RF sharing site to a dedicated
GSM site.
Purpose
Typical initial status:
•
GSM-WCDMA or GSM-LTE RF sharing site is working and both technologies are on
air.
The purpose of this scenario is to convert the RF sharing site into a dedicated GSM site.
This action must be done locally during the site visit. On completion GSM technology is
on air and WCDMA/LTE is deactivated completely.
Before starting, ensure that you have all the respective instructions to prepare the
desired site.
Procedure
During the site visit
60
1
Lock/block GSM and WCDMA/LTE and then turn off the power.
2
Physically remove the RP3-01 synchronization optical cable between the GSM System
Module and the WCDMA/LTE System Module.
3
Physically remove the optical cables between the shared RFM and both WCDMA/LTE
and GSM System Modules.
4
If RFM PWR cables are connected to the WCDMA/LTE System Module switch them to
the GSM System Module.
5
Turn power ON for GSM and perform Undo commissioning in 2G BTS Site Manager.
6
Connect the optical cables for the new GSM-dedicated configuration.
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7
Reverting RF sharing site to dedicated site
Commission GSM with the new SCF.
Optional: If the site was GSM-dedicated before the RF sharing deployment and, if
you revert it to the original configuration (that is: the same RFMs/RRHs are used)
you can use the old SCF.
Step result
GSM is on air as a dedicated site. WCDMA/LTE power is turned OFF.
Postrequisites
Before leaving the site, ensure that GSM technology is working properly without any
unexpected alarms.
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7 Rx diversity sharing
List of instructions and descriptions of RX diversity sharing.
7.1 Rx diversity sharing requirements
Requirements and detailed information regarding Rx diversity sharing.
The following RF Module (RFM) requirements have to be fulfilled to configure RX
diversity sharing:
•
•
•
Only RFMs with "Rx Out" port can be used.
Both RFMs operate in the same frequency band.
Both GSM and WCDMA/LTE carriers are within the RFM's instantaneous BW.
Figure 26
Rx diversity sharing requirements
3GPP
DLBW
RFMinstantaneousDLBW
WCDMA/
LTEBTS
RFM1
DLfiltercenterfrequency
WCDMA/LTE
carrier
Frequency
2GBTS
RFM2
GSMTRXs
Frequency
Filter Tuning
In case the RFM's instantaneous BW is narrower than the 3GPP band BW, the RF
Module's filter may need a manual shift to meet the Rx diversity sharing requirements. In
WCDMA and LTE BTS Site Manager it is possible to shift the DL filter and in 2G BTS
Site Manager it is possible to shift the UL filter. The DL and UL band filters are coupled,
so they are both shifted simultaneously.
Calculating GSM frequencies
In a typical scenario, a GSM-dedicated BTS already exists on a site. WCDMA or LTE,
with predefined carrier frequencies, is brought to the same site and existing antenna
lines are used for both technologies with Rx diversity sharing. The GSM TRX
frequencies are usually changed to accommodate the WCDMA/LTE carriers in the same
band. Thus the available GSM ARFCNs have to be calculated.
Example: calculating available ARFCNs, when FXDA RF Module (20 MHz Rx filter pass
band BW) is used and the WCDMA uplink (Rx) center frequency is set to 905 MHz.
1. Calculate the lower and the higher Rx filter cutoff frequencies: [Rx center frequency]
-/+ [Rx filter pass band BW]/2
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•
•
lower frequency [MHz]: 905 - 20/2 = 895
higher frequency [MHz]: 905 + 20/2 = 915
2. The available ARFCN channel frequencies have to be greater than 895 MHz and
lower than 915 MHz:
•
•
the lowest ARFCN: 26 (895.2 MHz)
the highest ARFCN: 124 (914.8 MHz)
In case of WCDMA, the GSM TRXs can overlap the edges of the WCDMA carrier BW the carrier frequencies have to be allocated at least 2 MHz away from the WCDMA
carrier's center frequency.
In case of LTE, the GSM TRXs have to be allocated outside the LTE carrier BW. For
example, when LTE carrier BW is 10 MHZ, the GSM carrier frequencies have to be
allocated at least 5.1 MHz away from the LTE carrier's center frequency.
Figure 27
Carrier-TRX spacing rules (pictures not in scale)
≥ 2.0MHz
≥ 2.0MHz
GSMTRX
center
frequency
GSMTRX
center
frequency
Frequency
WCDMAcarrier
WCDMAcarrier
centerfrequency
LTEcarrier
GSMTRX
≥ 0.5*BW+0.1
MHz
≥ 0.5*BW+0.1
MHz
GSMTRX
center
frequency
GSMTRX
center
frequency
Frequency
LTEcarrier
centerfrequency
Rx diversity cabling
Rx diversity sharing requires two additional RF cables for each sector. Those cables
connect the Rx Out port of the first RFM and Ant2/4/6 (Rx) port of the second RFM.
A set of six cables (allowing for three sectors) is delivered in "RDSA Rx Diversity Sharing
Kit 2m", sales code 472454A.
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Rx diversity sharing
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Figure 28
Additional Rx diversity cables connection with optional MHA
PWRIN
ANT 6
Rx
ANT 5
Tx/Rx
ANT 4
Rx
ANT 3
Tx/Rx
ANT 2
Rx
ANT 1
RxOut
ANT 3
RxOut
ANT 5
RxOut
ANT 1
Tx/Rx
OPT 1
EAC
OPT 2 OPT 3
Additional
RXdiversity
cables
ANT
MHA
PWRIN
ANT 6
Rx
ANT 5
Tx/Rx
ANT 5
RxOut
ANT
MHA
ANT 4
Rx
Sector2
ANT 1
Tx/Rx
ANT 1
RxOut
OPT 1
EAC
Sector3
ANT 2
Rx
ANT 3
Tx/Rx
ANT 3
RxOut
OPT 2 OPT 3
Sector1
ANT1/ANT3/ANT5Tx/RxareinternallyconnectedtoANT1/ANT3/ANT5Rxout.
Total uplink gain
The BTS receiver expects a certain fixed total gain in the uplink (UL) path, regardless the
configuration. The total gain at RX Diversity and RX Main have to be approximately
equal (the difference have to be less than few dB).
The internal LNA gain at both RX Main and RX Diversity paths is adjusted by the BTS,
depending on the parameters set during the commissioning. In Rx diversity sharing, both
paths have to be commissioned separately.
•
LNA in the Rx Main path:
–
–
•
When there is no MHA nor other additional gain in the feeder lines: the LNA gain
is set to high, to optimize the Rx sensitivity.
When there is an MHA or other additional gain in the feeder lines: the LNA gain
is adjusted by the BTS SW according to the values set during the commissioning.
LNA in the Rx Diversity path:
The LNA gain is set to low as the signal is already amplified by the other RFM. The
eventual gain of an MHA is also taken into account by the other RFM.
The additional gain seen by the receiving RFM equals +28 dB (+29 dB from Rx Out port
- 1 dB for Rx diversity cable loss).
There are two commissioning options for MHA RX Diversity configurations:
•
64
The first option is used for High Gain MHA or Low Gain MHA RX Diversity
configurations. It is covered in the section Commissioning WCDMA or LTE to High
Gain MHA or Low Gain MHA RX diversity configurations.
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•
Rx diversity sharing
The second option is used for Low Gain MHA RX Diversity configurations only. It is
described in the section Commissioning WCDMA or LTE to Low Gain MHA RX
Diversity configurations only.
Figure 29
Rx diversity signal paths
Antenna
Lowgain
setbyBTS
TotalgainatRXDiversity
andRXMain
isapproximatelythesame
Bias-T
LNA
ANT2
Rx
RX
filter
RXDiversity
ANT1
RxOut
LNA
RF
block
RX
filter
RXMain
Bias-T
VSWR
Det
TXRX
TX
filter
PA
Optional
MHA
MHA
MHA
LNA1 LNA2
ANT1
Tx/Rx
RFM1
Rxdiversitycables
1dBcableloss
NoMHA:HighgainsetbyBTS
MHA:gainadjustedbyBTS
GainatRxOut
is+29dB
Bias-T
LNA
ANT2
Rx
RX
filter
RXDiversity
ANT1
RxOut
LNA
RF
block
RX
filter
RXMain
Bias-T
VSWR
Det
TXRX
PA
TX
filter
ANT1
Tx/Rx
RFM2
7.2 Commissioning WCDMA or LTE to High Gain MHA
or Low Gain MHA RX diversity configurations
Steps to commission WCDMA or LTE to RX diversity sharing for High Gain MHA or Low
Gain MHA configurations.
Initial status
The site is prepared for RX diversity sharing - the cabling is done and BTS Site Manager
connection to the SMs is established.
The commissioning procedure is the same as in the dedicated mode, except for the
additional steps described in this section.
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The pictures in this section show the WCDMA Site Manager, but the same steps are
applicable for LTE as well.
Procedure
1
Start the commissioning.
Select Commissioning, Target: BTS, Commissioning type:
Select from the available options
•
•
2
if the BTS has not been commissioned: Template/Manual
if the BTS has been already commissioned: Reconfiguration
Proceed to Local Cell Resources (WCDMA) or Cell Resources (LTE).
Set three 1TX/2RX sectors.
Figure 30
3
RX diversity sharing: WCDMA - Local Cell Resources
Proceed to WCDMA Carrier Candidates and Local Cell Group Settings (WCDMA) or LTE
Carriers (LTE).
Select the appropriate UARFCN/EARFCN value and Bandwidth (for LTE).
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The RNC automatically sets the RFM's filter position during cell setup process. If the
RFM's instantaneous bandwidth (BW) is narrower than the 3GPP BW, it is
recommended to tick the Override nominal frequency check box and set the center
frequency.
g
Note: The allowed values are calculated (in MHz) as follows:
•
•
The lowest value: 3GPP Band start frequency + 1/2*RFM's UL filter BW
The highest value: 3GPP Band stop frequency - 1/2*RFM's UL filter BW
Example: FXDA (900 MHz) RFM has 20 MHz UL filter BW, the center frequency tuning
range is shown in Table 8: Example of manual filter tuning (FXDA).
Table 8
Example of manual filter tuning (FXDA)
DL start
UL start
DL stop
UL stop
frequency [MHz] frequency [MHz] frequency [MHz] frequency [MHz]
900 MHz band
frequency range
925
880
960
915
Manual tuning
range of FXDA
UL filter center
frequency
935 (925 + 10)
890 (880 + 10)
950 (960 - 10)
905 (915 - 10)
Figure 31
g
RX diversity sharing: WCDMA - Carrier settings
Note: Steps Proceed to Antenna Line Management. and
Proceed to AISG MHA Settings. are required only when WCDMA or LTE provides
power to MHAs and controls them.
4
Proceed to Antenna Line Management.
Tick the DC voltage check box for the antenna ports in which the MHAs are used.
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Figure 32
5
g
RX diversity sharing: WCDMA - Antenna Line Management
Proceed to AISG MHA Settings.
Note: The maximum number of internal MHAs is eight and the maximum number of
external MHAs is eight per RF Module. In BTS Site Manager select This BTS from
Used in box for internal MHA, in case of external MHA select Other BTS.
This limitation is valid for up to WN9.1 SW.
Assign the first LNA to This BTS and the second LNA to Other BTS as it is used by
GSM.
Figure 33
68
RX diversity sharing: WCDMA - AISG MHA Settings: LNA1
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Figure 34
6
RX diversity sharing: WCDMA - AISG MHA Settings: LNA2
Proceed to Antenna Line Settings.
Use regular, site-specific values and settings on TX antenna ports (ANT1, ANT3, and
ANT 5). For RX antenna ports (ANT2, ANT4, and ANT6) use the following
modifications when using RDSA cables:
•
•
•
•
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Set Feeder loss to "0"
Set Additional RX gain to "28"
Set Uplink delay to "10"
RTT measurements are done as usual, based on the site-specific conditions.
There are no special requirements because of RX diversity sharing.
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Rx diversity sharing
Configuring RF Sharing
Figure 35
7
RX diversity sharing: WCDMA - Antenna Line Settings - RX antenna
modifications
Proceed to the last page - Send Parameters.
Select the appropriate Send option:
Select from the available options
•
•
if the WCDMA/LTE BTS has not been commissioned: All parameters
if the WCDMA/LTE BTS has been already commissioned: Only changes
Click Save Parameters, if needed, then Send Parameters.
Figure 36
WCDMA - Send Parameters
In the commissioning report check if the parameters are set correctly. This can also
be checked in Site Information, after the commissioning.
Step result
The SM gets reset and the RX diversity sharing is ready from WCDMA/LTE side.
8
Check the BTS Hardware view (the main Site Manager view)
Ensure there are no unexpected alarms.
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Postrequisites
If WCELs must be kept locked after commissioning due to, for example, missing
operating license (or WCELs are not yet created in RNC), the RFM filters will not tune
into expected positions. This can cause RSSI problems in GSM as it receives Rx Div
signal via WCDMA RFMs. To avoid this problem, select Tests -> Enter BTS Test State
menu item and select test model 2 temporarily to enable RFM filter tuning. This can also
be done remotely provided the O&M link is up and running.
7.3 Commissioning WCDMA or LTE to Low Gain MHA
RX Diversity configurations only
Steps to commission WCDMA or LTE to RX diversity sharing for Low Gain MHA
configurations only.
Initial status
The site is prepared for RX diversity sharing - the cabling is done and BTS Site Manager
connection to the SMs is established.
The commissioning procedure is the same as in the dedicated mode, except for the
additional steps described in this section.
The pictures in this section show the WCDMA Site Manager, but the same steps are
applicable for LTE as well.
Procedure
1
Start the commissioning.
Select Commissioning, Target: BTS, Commissioning type:
Select from the available options
•
•
2
if the BTS has not been commissioned: Template/Manual
if the BTS has been already commissioned: Reconfiguration
Proceed to Local Cell Resources (WCDMA) or Cell Resources (LTE).
Set three 1TX/2RX sectors.
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Figure 37
3
RX diversity sharing for Low Gain MHA only: WCDMA - Local Cell
Resources
Proceed to WCDMA Carrier Candidates and Local Cell Group Settings (WCDMA) or LTE
Carriers (LTE).
Select the appropriate UARFCN/EARFCN value and Bandwidth (for LTE).
The RNC automatically sets the RFM's filter position during cell setup process. If the
RFM's instantaneous bandwidth (BW) is narrower than the 3GPP BW, it is
recommended to tick the Override nominal frequency check box and set the center
frequency.
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g
Rx diversity sharing
Note: The allowed values are calculated (in MHz) as follows:
•
•
The lowest value: 3GPP Band start frequency + 1/2*RFM's UL filter BW
The highest value: 3GPP Band stop frequency - 1/2*RFM's UL filter BW
Example: FXDA (900 MHz) RFM has 20 MHz UL filter BW, the center frequency tuning
range is shown in the below table.
Table 9
Example of manual filter tuning (FXDA)
DL start
UL start
DL stop
UL stop
frequency [MHz] frequency [MHz] frequency [MHz] frequency [MHz]
900 MHz band
frequency range
925
880
960
915
Manual tuning
range of FXDA
UL filter center
frequency
935 (925 + 10)
890 (880 + 10)
950 (960 - 10)
905 (915 - 10)
Figure 38
g
RX diversity sharing for Low Gain MHA only: WCDMA - Carrier settings
Note: Steps Proceed to Antenna Line Management. and
Proceed to AISG MHA Settings. are required only when WCDMA or LTE provides
power to MHAs and controls them.
4
Proceed to Antenna Line Management.
Tick the DC voltage check box for the antenna ports in which the MHAs are used.
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Figure 39
5
g
RX diversity sharing for Low Gain MHA only: WCDMA - Antenna Line
Management
Proceed to AISG MHA Settings.
Note: The maximum number of internal MHAs is eight and the maximum number of
external MHAs is eight per RF Module. In BTS Site Manager select This BTS from
Used in box for internal MHA, in case of external MHA select Other BTS.
This limitation is valid for up to WN9.1 SW.
Assign the first and second LNAs to This BTS.
Figure 40
74
RX diversity sharing for Low Gain MHA only: WCDMA - AISG MHA
Settings: LNA1
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Rx diversity sharing
Figure 41
6
RX diversity sharing: WCDMA - Low Gain AISG MHA Settings: LNA2
Proceed to Antenna Line Settings.
Use regular, site-specific values and settings on TX antenna ports (ANT1, ANT3, and
ANT 5). For RX antenna ports (ANT2, ANT4, and ANT6) use the following
modifications when using RDSA cables:
•
•
Set Feeder loss to "0"
Set Additional RX gain to the value calculated as 28 dB – MHA gain [dB]
–
•
•
DN09172017 Issue: 13
Example: for 12 dB MHA, the additional RX gain = 28 dB – 12 dB = 16 dB
Set Uplink delay to "10"
RTT measurements are done as usual, based on the site-specific conditions.
There are no special requirements because of RX diversity sharing.
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Rx diversity sharing
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Figure 42
7
RX diversity sharing for Low Gain MHA only: WCDMA - Antenna Line
Settings - RX antenna modifications
Proceed to the last page - Send Parameters.
Select the appropriate Send option:
Select from the available options
•
•
if the WCDMA/LTE BTS has not been commissioned: All parameters
if the WCDMA/LTE BTS has been already commissioned: Only changes
Click Save Parameters, if needed, then Send Parameters.
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Figure 43
RX diversity sharing for Low Gain MHA only: WCDMA - Send
Parameters
In the commissioning report check if the parameters are set correctly. This can also
be checked in Site Information, after the commissioning.
Step result
The SM gets reset and the RX diversity sharing is ready from WCDMA/LTE side.
8
Check the BTS Hardware view (the main Site Manager view)
Ensure there are no unexpected alarms.
Postrequisites
If WCELs must be kept locked after commissioning due to, for example, missing
operating license (or WCELs are not yet created in RNC), the RFM filters will not tune
into expected positions. This can cause RSSI problems in GSM as it receives Rx Div
signal via WCDMA RFMs. To avoid this problem, select Tests -> Enter BTS Test State
menu item and select test model 2 temporarily to enable RFM filter tuning. This can also
be done remotely provided the O&M link is up and running.
7.4 Commissioning GSM to RX diversity sharing
Steps to commission GSM to RX diversity sharing
Initial status
The site is prepared for RX diversity sharing - the cabling is done and BTS Site Manager
connection to the SMs is established.
The commissioning procedure is the same as in the dedicated mode, except for the
additional steps described in this section.
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Procedure
1
Start the commissioning.
Select Commissioning Wizard, Change settings manually
2
Proceed to Antenna Settings.
Sub-steps
a) For TX antenna ports (ANT1, ANT3, and ANT5)
Use regular, site-specific values and settings.
If the UL (Rx) bandwidth (BW) of the used RF Module is narrower than 3GPP
BW, it is recommended to tune the filter manually. The filter tuning is done by
setting the "Distance of beginning of filter band from lower frequency" parameter
(in MHz, granularity 0.1) as in Figure 44: RX diversity sharing: GSM - Antenna
Line Settings - TX (example).
g
Note: The UL and DL filters are coupled, thus setting UL filter also shifts the DL
filter. The allowed values (in MHz) are calculated as follows:
•
•
The lowest value: "0.0"
The highest value: 3GPP band UL BW - RFM UL filter BW
Example: FXDA (900 MHz) RFM has 20 MHz UL filter BW, the 900 MHz EGSM
band's BW is 35 MHz. The highest allowed parameter value: 15 MHz (35 MHz 20 MHz).
If an MHA is used (and controlled by the other technology), set the parameters
as listed:
•
•
•
•
•
•
•
78
Feeder voltage - set to "0".
Feeder loss - use site-specific value.
MHA type - select "Non-AISG 2.0 MHA".
Product type - select the correct MHA type, or choose "Other" if your MHA is
not on the list.
Serial number - optional field for entering the MHA's serial number manually.
Gain - set it according to actual MHA gain.
Alarm threshold - enter the MHA's alarm threshold manually.
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Figure 44
RX diversity sharing: GSM - Antenna Line Settings - TX (example)
b) For RX antenna ports (ANT2, ANT4, and ANT6)
Tick the Additional Rx Gain check box and set the value to "28", when using
Nokia RDSA cables.
Figure 45
RX diversity sharing: GSM - Antenna Line Settings - RX
c) For Flexi Compact
g
Note: This step is valid for GFC until GFC1 EP2.
Additional RX gain has to be set as a virtual MHA. When using RDSA cables, set
the parameters as listed:
•
•
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Feeder voltage - set to "0".
Feeder loss - set to "0".
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Rx diversity sharing
Configuring RF Sharing
•
•
•
•
MHA type - select "AISG 2.0 MHA".
Product type - select Other".
Gain - set to "28".
Product code - mandatory field, though you can fill in any value.
Figure 46
3
RX diversity sharing: GSM - Antenna Line Settings - RX - for Flexi
Compact
Proceed to the last page - Site Commissioning File.
Click Send SCF.
Step result
The SM gets reset and the RX diversity sharing is ready from GSM side.
7.5 LTE-GSM RF sharing with Rx diversity sharing (Ptype configuration)
Description of a special configuration (type P) for LTE-GSM.
g
g
g
80
Note: This section is valid for EX5.1 3.1.0 onwards. This SW release allows to
commission either one, two or three cells, the previous SW releases allow to configure
only three cells.
Note: If P-type configuration is used with MHA, it requires LN7.0 1.2 (or later).
Note: Dedicated RFMs are not supported in LTE P-type configuration.
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The configuration allows for up to 1+1+1 LTE 20 MHz MIMO and up to 4+4+4 GSM with
FXEA variant A.203 RF Module.
As FXEA RF Module (RFM) can allocate a total of 20 MHz uplink (UL) LTE signal in each
pipe, it cannot transmit the GSM signal simultaneously. That is why the LTE and GSM
resources have to be assigned to separate pipes. In such case the additional Rx
diversity sharing cables have to be connected, to provide Rx Div signal to the other
technology-dedicated pipes.
In the downlink (DL), full 25 MHz BW can be used to transmit both LTE and GSM
simultaneously in the same pipe.
g
Note: When type P configuration is commissioned:
•
•
GSM cannot support additional GSM-dedicated RFMs.
TRX Tests in 2G cannot be run.
Figure 47
Cabling instruction for P-type configuration with LTE FSME
GSMSM
PWRIN
FPA OPT OPT
OPT OPT LMP
Sync-Out Sync-In
EAC
Q1
ANT 6
Rx
ANT 5
Tx/Rx
PWR
PWR
PWR
PWR
ANT 4
Rx
ANT 3
Tx/Rx
OPT 1
Sector3
ANT 1
Tx/Rx
ANT 1
RxOut
EAC
PWR
ANT 2
Rx
ANT 3
RxOut
ANT 5
RxOut
Sector2
OPT 2 OPT 3
Sector1
LTEFSMESM
PWRIN
ANT 6
Rx
ANT 5
RxOut
EAC
ANT 5
Tx/Rx
ANT 4
Rx
ANT 3
Tx/Rx
ANT 2
Rx
ANT 1
Tx/Rx
ANT 1
RxOut
ANT 3
RxOut
OPT 1
OPT 2 OPT 3
ANT1/ANT3/ANT5Tx/RxareinternallyconnectedtoANT1/ANT3/ANT5Rxout.
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Figure 48
Cabling instruction for P-type configuration with LTE FSMF
GSMSM
PWRIN
FPA OPT OPT
OPT OPT LMP
Sync-Out Sync-In
EAC
Q1
ANT 6
Rx
ANT 5
Tx/Rx
PWR
PWR
PWR
PWR
ANT 4
Rx
ANT 3
Tx/Rx
OPT 1
Sector3
ANT 1
Tx/Rx
ANT 1
RxOut
EAC
PWR
ANT 2
Rx
ANT 3
RxOut
ANT 5
RxOut
OPT 2 OPT 3
Sector1
Sector2
LTEFSMFSM
PWRIN
ANT 6
Rx
ANT 5
RxOut
ANT 5
Tx/Rx
ANT 4
Rx
ANT 3
Tx/Rx
ANT 2
Rx
OPT 1
EAC
ANT 1
Tx/Rx
ANT 1
RxOut
ANT 3
RxOut
OPT 2 OPT 3
ANT1/ANT3/ANT5Tx/RxareinternallyconnectedtoANT1/ANT3/ANT5Rxout.
7.5.1 Commissioning type P configuration in LTE
Steps to commission configuration type P in LTE.
Purpose
g
Note: If P-type configuration is used with MHA, it requires LN7.0 1.2 (or later).
Initial status
The site is prepared for RX diversity sharing - the cabling is done and BTS Site Manager
connection to the System Modules (SM) is established.
The commissioning procedure is the same as in the dedicated mode, except for the
additional steps described in this section.
Procedure
1
Start the commissioning.
Select Commissioning, Target: BTS, Commissioning type:
Select from the available options
•
•
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if the BTS has not been commissioned: Template/Manual
if the BTS has been already commissioned: Reconfiguration
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2
Rx diversity sharing
Proceed to Concurrent Mode Settings.
Tick the RF sharing enabled check box, choose LTE-2G as the shared
technologies, enter the product code and serial number of the GSM SM, and tick
both FXEA RF Modules (RFMs) as shared.
Figure 49
3
P-type LTE - LTE Concurrent Mode Settings
Proceed to Cell Resources.
Configure one, two or three cells and assign the TXs and RXs as shown in the
figures below, select Dynamic Open Loop MIMO and the appropriate Carrier power.
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Figure 50
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P-type LTE - Cell Resources (Local cell 1)
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Figure 51
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P-type LTE - Cell Resources (Local cell 2)
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Figure 52
4
P-type LTE - Cell Resources (Local cell 3)
Proceed to LTE Carriers
Select 20 MHz Bandwidth for each cell.
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Figure 53
5
P-type LTE - LTE Carriers
(Optional) Configure the MHAs appropriately, if they are used
Sub-steps
a) Proceed to Antenna Line Management
Ensure that 3GPP/AISG communication and DC Voltage are enabled for all
antenna ports having the MHAs.
b) Proceed to AISG MHA Settings
Select the appropriate Antenna from the pull-down menu.
6
Proceed to Antenna Line Settings
Use regular, site-specific values and settings on TX antenna ports (ANT1, ANT3, and
ANT 5 on both FXEAs). For the used RX antenna ports (FXEA 1.1.1: ANT2 and
ANT6, FXEA 1.2.1: ANT4) use the following modifications when using Nokia RDSA
cables:
•
•
•
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Set Total loss to 0
Set Additional RX gain to 28
Set Uplink delay to 10
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Figure 54
7
P-type LTE - Antenna Line Settings
Proceed to Send Parameters
Sub-steps
a) Press Send Parameters to finish the commissioning.
b) After commissioning is complete, choose File -> Backup Commissioning Files
menu item and store the BTS SCF on your computer. The SCF is necessary for
later GSM commissioning.
Step result
All the commissioned LTE Cells go On Air with no unexpected alarms.
Postrequisites
Make sure that the configuration has been performed correctly by verifying that Front
End Gain (FEG) shows 1 for the antennas where Additional RX gain was set to 28.
FEG is verified by telnet connection to the RF Module.
7.5.2 Commissioning type P configuration in GSM
Steps to commission configuration type P in GSM.
Purpose
g
Note: This section is valid for EX5.1 3.1.0 onwards.
Initial status
The site is prepared for RX diversity sharing - the cabling is done and BTS Site Manager
connection to the System Modules (SM) is established.
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Rx diversity sharing
The commissioning procedure is the same as in the dedicated mode, except for the
additional steps described in this section.
Procedure
1
Start the commissioning.
Select Commissioning Wizard, Change settings manually
2
Proceed to Hardware Configuration.
Select "Specify from file" and choose the LTE SCF, previously saved after the LTE
commissioning.
3
Proceed to Local Sector Settings.
Configure the sectors as shown in figures.
Figure 55
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P-type GSM - Local sector 1
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Configuring RF Sharing
Figure 56
P-type GSM - Local sector 2
Figure 57
P-type GSM - Local sector 3
Proceed to Antenna line settings.
Tick the check boxes as in figure.
g
90
Note: In this configuration the 29 dB Rx gain is taken into account automatically.
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Figure 58
5
P-type GSM - Antenna line settings
Proceed to the last commissioning page and click Send SCF.
Step result
Both LTE and GSM are On Air with no unexpected alarms.
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