Configuring RF Sharing

LTE Radio Access, Rel. RL70,Operating Documentation,Issue 02, DocumentationChange Delivery 2

Configuring RF Sharing DN09172017Issue 04Approval Date 2015-05-25

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Configuring RF Sharing

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Table of ContentsThis document has 59 pages

Summary of changes..................................................................... 7

1 Concepts and terminology............................................................111.1 Concept of RP3-blocking SW.......................................................111.2 Concepts of RF sharing and RX diversity sharing....................... 12 2 RF Sharing deployment scenarios............................................... 132.1 Installing a new RF sharing site................................................... 132.2 Adding RF Sharing to existing site and activating locally.............142.3 Adding RF Sharing with RP3-blocking SW case 1.......................172.4 Adding RF Sharing with RP3-blocking SW case 2.......................202.5 Adding RF Sharing with locked WCDMA cells.............................22 3 Commissioning RF sharing.......................................................... 283.1 Commissioning WCDMA for 2-RAT RF Sharing.......................... 283.2 Commissioning LTE for 2-RAT RF Sharing..................................313.3 Commissioning GSM for 2-RAT RF Sharing................................353.4 Recommissioning RF Sharing to change particular settings in

Master technology........................................................................36 4 Rx diversity sharing......................................................................384.1 Rx diversity sharing requirements................................................384.2 Commissioning WCDMA or LTE to RX diversity sharing............. 414.3 Commissioning GSM to RX diversity sharing.............................. 464.4 LTE-GSM RF sharing with Rx diversity sharing (P-type

configuration)............................................................................... 484.4.1 Commissioning type P configuration in LTE.................................494.4.2 Commissioning type P configuration in GSM...............................53 5 Troubleshooting RF sharing......................................................... 575.1 Incorrect filter shift in RX diversity sharing................................... 575.2 Incorrect RP3 cabling...................................................................575.3 Missing RF Sharing license..........................................................585.4 Remote connection to the Slave BTS is lost................................ 585.5 TRX Object allocation failed - GSM alarms..................................58


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List of FiguresFigure 1 RP3-blocking SW concept.................................................................. 11Figure 2 Main differences between RF sharing and RX diversity sharing

concepts............................................................................................. 12Figure 3 Downloading SW without activation................................................... 18Figure 4 RF Sharing with locked WCDMA cells concept..................................22Figure 5 Commissioning - reconfiguration, target: BTS....................................24Figure 6 GSM BTS - alarms at startup............................................................. 25Figure 7 GSM BTS - selecting shared/dedicated modules...............................26Figure 8 WCDMA - Concurrent Mode Settings.................................................29Figure 9 WCDMA - Local Cell Resources........................................................ 30Figure 10 WCDMA - Send Parameters.............................................................. 31Figure 11 LTE - Enable EIF2 as RP3-01 interface............................................. 32Figure 12 LTE - Concurrent Mode Settings for LTE-2G......................................33Figure 13 LTE - Concurrent Mode Settings for LTE-3G......................................34Figure 14 GSM - Local Sector Settings.............................................................. 36Figure 15 Rx diversity sharing requirements...................................................... 38Figure 16 Carrier-TRX spacing rules (pictures not in scale)...............................39Figure 17 Additional Rx diversity cables connection.......................................... 40Figure 18 Rx diversity signal paths.....................................................................41Figure 19 RX diversity sharing: WCDMA - Local Cell Resources...................... 42Figure 20 RX diversity sharing: WCDMA - Carrier settings................................ 43Figure 21 RX diversity sharing: WCDMA - Antenna Line Management............. 43Figure 22 RX diversity sharing: WCDMA - AISG MHA Settings: LNA1..............44Figure 23 RX diversity sharing: WCDMA - AISG MHA Settings: LNA2..............44Figure 24 RX diversity sharing: WCDMA - Antenna Line Settings - RX antenna

modifications.......................................................................................45Figure 25 WCDMA - Send Parameters.............................................................. 45Figure 26 RX diversity sharing: GSM - Antenna Line Settings - TX (example)......

47Figure 27 RX diversity sharing: GSM - Antenna Line Settings - RX...................47Figure 28 RX diversity sharing: GSM - Antenna Line Settings - RX - for Flexi

Compact............................................................................................. 48Figure 29 Configuration type P with resource allocation.................................... 49Figure 30 P-type LTE - LTE Concurrent Mode Settings......................................50Figure 31 P-type LTE - Cell Resources.............................................................. 51Figure 32 P-type LTE - LTE Carriers...................................................................52Figure 33 P-type LTE - Antenna Line Settings................................................... 52Figure 34 P-type GSM - Local sector 1.............................................................. 54Figure 35 P-type GSM - Local sector 2.............................................................. 54Figure 36 P-type GSM - Local sector 3.............................................................. 55


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Figure 37 P-type GSM - Antenna line settings................................................... 56


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List of TablesTable 1 RAT releases covered by the document...............................................7Table 2 WCDMA/LTE settings forcing the GSM recommissioning..................37Table 3 Example of manual filter tuning (FXDA)............................................. 43Table 4 Incorrect filter shift.............................................................................. 57Table 5 RFM/RRH cables cross-connected before GSM commissioning....... 57Table 6 Missing RF Sharing license................................................................ 58Table 7 Remote connection to the Slave BTS is lost...................................... 58Table 8 TRX Object allocation failed - GSM alarms........................................ 59


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Summary of changesChanges between document issues are cumulative. Therefore, the latest documentissue contains all changes made to previous issues.

This document is common for Radio Access Technologies (RATs) listed in RAT releasescovered by the document.

Table 1 RAT releases covered by the document

Radio Access Technology (RAT) Product release

GSM/EDGE (BSS) RG30 (BSS), RG40 (BSS)

WCDMA RAN RU40, RU50, RU50 EP1

Long Term Evolution RL50, RL60, RL70, FDD-LTE15A

Changes between issues 03 (2015-02-27) and 04 (2015-05-25)Commissioning WCDMA for 2-RAT RF Sharing

• Note regarding GSM recommission has been removed.

Commissioning LTE for 2-RAT RF Sharing


Commissioning GSM for 2-RAT RF Sharing


Recommissioning RF Sharing to change particular settings in Master technology

• Section has been added.

Commissioning WCDMA or LTE to RX diversity sharing

• Minor changes in center frequency tuning have been made.

Commissioning GSM to RX diversity sharing

• Minor changes in manual filter tuning have been made.

Changes between issues 02 (2014-11-21) and 03 (2015-02-27)Installing a new RF sharing site

• Note in step Power up the Master technology SM (WCDMA or LTE) and ensure allthe RFMs/RRHs and ALDs are detected and shown properly in the BTS SiteManager has been updated.

• Step Commission the Slave technology for RF sharing has been updated

Adding RF Sharing to existing site and activating locally

• Step 1, 7 and 8 have been updated.• Note in step Optional: Update the new technology's SM SW has been updated.

Configuring RF Sharing Summary of changes

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• Step Commission the Master technology (WCDMA or LTE) for RF Sharing has beenupdated

• New post requisites have been added.

Commissioning WCDMA for 2-RAT RF Sharing

• Note regarding SW combinations has been added.• Preconditions have been updated.• Step Proceed to BTS Synchronization settings has been added.• Step Proceed to Concurrent Mode Settings has been updated.• Post requisite has been added.

Commissioning LTE for 2-RAT RF Sharing

• Note regarding IP address change of LTE SM has been added.• Note regarding SW combinations has been added.• Preconditions have been updated.• Step Proceed to BTS Synchronization settings has been added.• Step Proceed to Concurrent Mode Settings has been updated.• Post requisite has been added.

Commissioning GSM for 2-RAT RF Sharing

• Note regarding SW combinations has been added.• Preconditions have been updated.• Step Proceed to Site Specific Information has been added.• Step Proceed to Module Configuration has been updated.


• Step Proceed to WCDMA Carrier Candidates and Local Cell Group Settings(WCDMA) or LTE Carriers (LTE) has been updated.

• Post requisite has been added.


• Sub-step for Flexi Compact has been added to step Proceed to Antenna Settings.

LTE-GSM RF sharing with Rx diversity sharing (P-type configuration)

• Note that this chapter is valid for EX5.1 3.1.0 onwards has been added.

Commissioning type P configuration in LTE

• Step Proceed to Cell Resources has been updated.• Step Proceed to Send Parameters has been updated.

Commissioning type P configuration in GSM

• Note that this chapter is valid for EX5.1 3.1.0 onwards has been added.• Note in step Proceed to Hardware Configuration has been removed.

Summary of changes Configuring RF Sharing

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• Note in step Proceed to the last commissioning page and click Send SCF has beenremoved.

Minor changes have been made in the topics:

• Adding RF Sharing with RP3-blocking SW case 1• Adding RF Sharing with locked WCDMA cells

Changes between issues 01 (2014-06-13) and 02 (2014-11-21)Concept of RP3-blocking SW

• Information on autoconnection has been added.

Adding RF Sharing to existing site and activating locally

• Information regarding FSMF with FPFD has been added to Recommended(Optional): Switch the RFM/RRH power cables to the Master SM.

Commissioning RF sharing

• Note to always keep the Slave SCF up to date with the Master SCF has been added.

Commissioning LTE for RF Sharing

• Instruction to enable EIF2 as RP3-01 port has been added to Start commissioning.• Figure 12: LTE - Concurrent Mode Settings has been updated.

Rx diversity sharing requirements

• Calculating GSM frequencies, Rx diversity cabling, and Total uplink gain has beenadded.


• The title has been changed.


• Information regarding manual filter tuning has been updated.• The title has been changed.• Legacy SW (EX4.2) specific step has been removed.

LTE-GSM RF sharing with Rx diversity sharing (P-type configuration)


Commissioning type P configuration in LTE


Commissioning type P configuration in GSM


Minor changes have been made in the topics:

Configuring RF Sharing Summary of changes

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• Concepts of RF sharing and RX diversity sharing• Installing a new RF sharing site• Adding RF Sharing to existing site and activating locally• Adding RF Sharing with RP3-blocking SW case 1• Commissioning WCDMA for RF Sharing• Commissioning LTE for RF Sharing• Rx diversity sharing requirements• Troubleshooting RF sharing (reordered)

Summary of changes Configuring RF Sharing

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1 Concepts and terminology

1.1 Concept of RP3-blocking SWExplanation on how the RP3-blocking SW works and what is the most typical use case ofthe SW.

The RP3-blocking software is a non-standard WCDMA or LTE build. The SW disables allthe external RP3-01 links, so the System Module (SM) does not detect any RF Modules(RFMs), Remote Radio Heads (RRHs), Antenna Line Devices (ALDs), nor the othertechnology's SM.

The SW is designed to prepare the site for RF Sharing when the user has, for example,no legal license to transmit on the added technology's bands. It prevents the new SMfrom automatically detecting the connected modules and taking over the Sync and RadioMaster roles. RF Sharing is activated later, remotely.

The SW allows for transmission commissioning, which enables a remote connection.The autoconnection feature can be used then.

Figure 1: RP3-blocking SW concept presents the RP3-blocking SW usage in RF Sharingcases. Note that the presented configurations are exemplary, for supportedconfigurations, see Flexi Multiradio BTS RF Sharing Released Configurations.

To order the RP3-blocking SW, refer to Technical Support.

Figure 1 RP3-blocking SW concept

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Configuring RF Sharing Concepts and terminology

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1.2 Concepts of RF sharing and RX diversity sharingA description and a picture showing the basic differences between RF sharing and RXdiversity sharing.

There are two ways of deploying two technologies at one site with shared resources: RFsharing and RX diversity sharing (also called antenna sharing). The main difference isthat in RF sharing the technologies work in Master-Slave mode and the sameRFMs/RRHs are used by both technologies, while in RX diversity sharing bothtechnologies are transmitting independently, using dedicated RFMs. Figure 2: Maindifferences between RF sharing and RX diversity sharing concepts presents the maindifferences between those deployment cases. Note that the figure is only an example.

Figure 2 Main differences between RF sharing and RX diversity sharing concepts

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Concepts and terminology Configuring RF Sharing

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2 RF Sharing deployment scenariosA list the most typical RF sharing deployment scenarios.

2.1 Installing a new RF sharing siteSteps 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' HWis installed and activated locally during the site visit. After the site visit both technologiesare on air.

Ensure that you have all the respective instructions to prepare the desired site.

Before the site visit

1 Prepare the configurations, depending on which technologies are used: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 thesite visiting time.

2 Install the correct GSM/WCDMA/LTE BTS Site Manager version on yourcomputer(s).In case of RF sharing with WCDMA, ensure you have all the required licensesdownloaded on your computer.

g It is recommended that you have two computers, which allows simultaneous connectionto both technologies' Site Managers.

3 Check the supported SW for both technologies in RF sharing CompatibilityMatrix.

4 Optional: Update the SMs' SW.It is recommended that you update the new SMs' 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 SMs via LocalManagement Ports (LMPs).To connect the modules for RF sharing configurations, see Flexi Multiradio BTS RFSharing Released Configurations.For details, see the respective Installing and Cabling Flexi Multiradio documentation.

Configuring RF Sharing RF Sharing deployment scenarios

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Ensure that the RFM/RRH has the same SFP type as the SM - 3 Gbps or 6 Gbps. Incase of LTE, always use 6 Gbps SFPs and optical links, when supported by the usedHW.

6 Power up the Master technology SM (WCDMA or LTE) and ensure all theRFMs/RRHs and ALDs are detected and shown properly in the BTS SiteManager.

g FSMF is delivered with Factory Delivered SW (FDSW). Site Manager does not detectany RFMs/RRHs and ALDs until the SM is updated with appropriate technology SW.For the update procedure instructions, see the Delivery Note, provided in the HWdelivery box.

7 If not done before, update the SM SW to the desired version.If Incompatible SW version detected (0023) alarm is raised, update the SW again.ResultThe HW is now ready for commissioning.

8 Commission the Master technology for RF sharing.

9 Repeat steps 5 and 6 for the Slave technology.

10 Commission the Slave technology for RF sharing.In case GSM is the Slave technology, select "Manual commissioning", then fetch theSCF from the Master technology's BTS (as a Backup Commissioning File in case ofLTE SCF) and use it as a template in Hardware Configuration.ResultThe site is ready and both technologies are on air.

Post requisitesBefore leaving the site ensure that:

• Both technologies are working properly without any unexpected alarms.• Test calls (both voice and data) are succesful in each cell/sector.• All unused ports (for example LMP) are secured with IP caps.

2.2 Adding RF Sharing to existing site and activatinglocallySteps to add one technology HW to an already existing site and create an RF sharingsite: WCDMA-GSM, LTE-GSM, or WCDMA-LTE.

Purpose

Typical initial status:

RF Sharing deployment scenarios Configuring RF Sharing

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• 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 HWis installed and RF Sharing is activated locally during the site visit. After the site visit bothtechnologies are on air.



1 If possible, prepare the configurations, depending on which technologies areused: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 thesite visiting time.

2 Install the correct GSM/WCDMA/LTE BTS Site Manager version on yourcomputer(s).In case of RF Sharing with WCDMA, ensure you have all the required licensesdownloaded on your computer.


3 Check the supported SW for both technologies in RF Sharing CompatibilityMatrix.

4 Optional: Update the already deployed technology's SM SW.If the SW update is needed for the already deployed technology, update it remotelyto save the site visit time.

5 Optional: Update the new technology's SM SW.It is recommended that you update the new technology's SM SW before the site visit(if possible). This reduces the site visit time and the eventual downtime of the alreadydeployed technology's transmission.In case of a WCDMA use download the needed licenses to the WCDMA SM.

g FSMF is delivered with Factory Delivered SW (FDSW). Site Manager does not detectany RFMs/RRHs and ALDs until the SM is updated with appropriate technology SW.For the update procedure instructions, see the Delivery Note, provided in the HWdelivery box.



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6 Install the new HW. Do not connect the new SM to the already deployed SM andRFMs/RRHs.This way does not disturb the already deployed technology transmission.

7 Power up the new technology's SM. Update the SW, if not done before.This ensures that the new SM is running the correct SW before proceeding.

8 Power off the already deployed and the new SMs and finalize the HWinstallation for RF Sharing.To connect the modules for RF Sharing configurations, see Flexi Multiradio BTS RFSharing 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 SM - 3 Gbps or 6 Gbps. Incase of LTE, always use 6 Gbps SFPs and optical links, when supported by the usedHW.ResultThe already deployed technology's traffic goes down.

9 Recommended (Optional): Switch the RFM/RRH power cables to the MasterSM.The Shared RFMs/RRHs can be powered from either Master SM, Slave SM, or anexternal power supply, depending on the site environment.If the RFMs/RRHs are powered from the Slave SM and the Slave SM gets a HWreset or a failure occurs, both technologies' traffic goes down.

g Exception: in WCDMA-LTE case, if the Slave (LTE) SM is FSMF with Power DistributionSub-module (FPFD), then the SM reset does not affect the power supply provided byFPFD.If the RFMs/RRHs are powered from the Master SM (as recommended) and theSlave SM gets reset or failure occurs, only the Slave technology traffic goes down.

10 Power up the Master technology SM and ensure all the RFMs/RRHs and ALDsare detected and shown properly.If Incompatible SW version detected (0023) alarm is raised, update the SW again.

ResultThe 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 forlater use in the GSM (Slave) technology commissioning. Save the LTE SCF as aBackup Commissioning File.

ResultThe Master technology cells go on air (in both shared and dedicated RFMs/RRHs).


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12 Power up the Slave technology (LTE or GSM) and commission it for RFSharing.In case of GSM, the commissioning can be conducted with Undo Commissioning(removes both Hardware Configuration and Transmission Parameters) or ChangeSettings Manually procedures.Before performing Undo Commissioning save the current SCF. It contains thetransmission settings and can be used as a back-up.To commission GSM, fetch the SCF from the Master technology's BTS (as a BackupCommissioning File in case of LTE SCF) and use it as a template in HardwareConfiguration.

ResultThe site is ready and both technologies are on air.

Post requisitesBefore leaving the site ensure that:

• Neither of the technologies' Site Managers shows 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.

2.3 Adding RF Sharing with RP3-blocking SW case 1Steps to add WCDMA or LTE HW to an already existing GSM site and create an RFsharing site: WCDMA-GSM or LTE-GSM.

Case 1: The GSM site is already active. WCDMA or LTE is now added as a Mastertechnology.

The purpose of this scenario is to add RF Sharing with RP3-blocking SW to the site. TheWCDMA or LTE HW is installed, RF Sharing is set locally, and the RP3-blocking SW isdownloaded during the site visit. After the site visit the new technology is off air. GSM istransmitting in dedicated mode with full power and frequency budgets. RF Sharing isactivated later, remotely.


Use case

The case is deployed, for example, when the user has not yet got a legal license totransmit on WCDMA or LTE band. The scenario is adopted when there is no WCDMA orLTE transmission in dedicated mode due to RP3-blocking SW. For details on RP3-blocking SW, see Concept of RP3-blocking SW.



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1 Install the correct GSM/WCDMA/LTE BTS Site Manager version on yourcomputer(s).In case of RF Sharing with WCDMA, ensure you have all the required licensesdownloaded on your computer.


2 Check the supported SW for both technologies in RF Sharing CompatibilityMatrix.

3 Optional: Update the new technology's SM SW.It is recommended that you update the new technology's SM SW before the site visit(if possible). This reduces the site visit time and the eventual downtime of the alreadyactive GSM transmission.

a) Connect to the SM locally via Local Management Port (LMP) and update theSW to the desired version (not the RP3-blocking SW).

b) Download the RP3-blocking SW to the SM; do not activate it.Untick the Activate SW after update tick-box as in Figure 3: Downloading SWwithout activation.

g FSMF is delivered with Factory Delivered SW (FDSW). Site Manager does notdetect any RFMs/RRHs and ALDs until the SM is updated with appropriatetechnology SW. For the update procedure instructions, see the Delivery Note,provided in the HW delivery box.

Figure 3 Downloading SW without activation

c) In case of a WCDMA use download the needed licenses to the WCDMA SM.

d) Commission TRS.On Commissioning page select Target: TRS.



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4 Install the new HW, do the cabling, and connect to SMs via LMPs.To connect the modules for RF Sharing configurations, see Flexi Multiradio BTS RFSharing 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 SM - 3 Gbps or 6 Gbps. Incase of LTE, always use 6 Gbps SFPs and optical links, when supported by the usedHW.

5 Power off GSM SM.

ResultGSM goes off air.

6 Recommended (Optional): Switch the RFM/RRH power cables to the MasterSM.The Shared RFMs/RRHs can be powered from either Master SM, Slave SM, or anexternal power supply, depending on the site environment.If the RFMs/RRHs are powered from the Slave SM and the Slave SM gets reset or afailure occurs, both technologies' traffic goes down.If the RFMs/RRHs are powered from the Master SM (as recommended) and theSlave SM gets reset or failure occurs, only the Slave technology traffic goes down.

7 Power up the Master technology SM and ensure all the RFMs/RRHs and ALDsare detected and shown properly.Update the new technology's SM SW, if not done before.If Incompatible SW version detected (0023) alarm is raised, update the SW again.

ResultThe Master technology's HW is now ready for commissioning.

8 Commission the Master technology (WCDMA or LTE) for RF Sharing.Important: In case of WCDMA, keep the WCELs locked at RNC.Save the Master technology's SCF for later use in the GSM commissioning.

9 Update the Master technology's SM with RP3-blocking SW.

ResultExpected alarm is raised: "Failure in optical RP3 interface (0010)".

10 Power up the GSM SM.

Result

GSM is back on air in dedicated mode. WCDMA or LTE is ready for remoteactivation.

Before leaving the site ensure that:


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• All the cables are working properly (checked in Step 8)• Neither of the technologies' Site Managers shows any unexpected alarms.• GSM is transmitting properly (make test calls).• All unused ports (for example LMP) are secured with IP caps.

After the site visitWhen the legal license to transmit the Master technology is acquired.

11 WCDMA-specific step:Create the 3G configuration plan at RNC.

12 Connect remotely to the Master technology's SM and update the SW to theactive one (not RP3-blocking).Master technology's SM detects the Shared RFMs/RRHs.If Incompatible SW version detected (0023) alarm is raised, update the SW again.

13 Connect remotely to GSM (Slave) SM.a) Optional: update the GSM SM's SW, if needed.

b) Commission GSM to RF Sharing.Fetch the SCF from the Master technology's BTS and use it as a template inHardware Configuration.

ResultGSM gets reset and OMUSIG connection may be lost temporarily, including loss ofthe remote Site Manager connection.

14 Give a reset to the Master technlogy SM.The action resets also the GSM SM. After the reset the OMUSIG and remote SiteManager connection are restored.

2.4 Adding RF Sharing with RP3-blocking SW case 2Steps to add LTE HW to an already existing WCDMA site and create an RF sharing siteWCDMA-LTE.

Case 2: The WCDMA site is already active. LTE is now added as a Slave technology.

The purpose of this scenario is to add LTE with RP3-blocking SW to the site, for later RFSharing activation. The LTE HW is installed and the RP3-blocking SW is downloadedduring the site visit. After the site visit LTE is off air. WCDMA is transmitting in dedicatedmode with full power and frequency budgets. RF Sharing is activated later, remotely.


For details on RP3-blocking SW, see Concept of RP3-blocking SW.

Prerequisites


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1 Install the correct LTE BTS Site Manager version on your computer.

2 Optional: Update the LTE SM with RP3-blocking SW.It is recommended that you update the LTE SM's SW before the site visit (ifpossible). This reduces the site visit time.a) Connect to the SM locally via Local Management Port (LMP) and update the

SW to the RP3-blocking SW.

b) Commission TRS.On the Commissioning page, select Target: TRS.


3 Install the LTE HW and do the cabling.To connect the modules for RF Sharing configurations, see Flexi Multiradio BTS RFSharing 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 SM - 3 Gbps or 6 Gbps. Incase of LTE, always use 6 Gbps SFPs and optical links, when supported by the usedHW.

4 If not done before, update the LTE SM with RP3-blocking SW as described inOptional: Update the LTE SM with RP3-blocking SW.

Result

LTE is ready for remote activation.


• Neither of the technologies' Site Managers shows any unexpected alarms.• WCDMA is transmitting properly (make test calls).• All unused ports (for example LMP) are secured with IP caps.

After the site visit


Issue: 04 DN09172017 21

5 Create the 3G configuration plan at RNC and prepare all the required WCDMAlicenses.

6 Connect remotely to WCDMA SM, commission the RF Sharing, and save thebackup commissioning file.

7 Connect remotely to the LTE SM, update the SW to the active one (not RP3-blocking), and commission the RF Sharing.

2.5 Adding RF Sharing with locked WCDMA cellsSteps to reuse a GSM band for WCDMA-GSM RF sharing in an already existing site withdedicated WCDMA and GSM.

Purpose

Initial status: WCDMA (on Band A, for example 2100 MHz) and GSM (on Band B, forexample 900 MHz) are already on air, both in dedicated mode. WCDMA Band BWCEL(s) are created in RNC and kept in locked state.

Figure 4 RF Sharing with locked WCDMA cells concept


Ban

d�A

Ban

d�B

WCDMA�SM

GSM�SMShared�RFMtransmitting

WCDMA�+�GSM

Dedicated�RFM

Syn

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aste

r

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Radio�Master

Ban

d�A

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GSM�SMShared�RFMtransmitting

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aste

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Radio�Master


22 DN09172017 Issue: 04

The purpose of this scenario is to add RF Sharing, in which WCDMA and GSM share theBand B (currently used by GSM). The new optical cabling is done, RF Sharing isprepared locally during the site visit. After the site visit the shared RFMs/RRHs transmitonly the GSM traffic with limited power budget (due to RF Sharing), overlapping theplanned WCDMA carrier bandwidth (BW). Later, the overlapping GSM TRXs areremoved and WCDMA cells for RF Sharing are activated remotely. Figure 4: RF Sharingwith locked WCDMA cells concept presents the deployment case.


Use case

This scenario is deployed in cases where the user, for example, has not yet got a legallicense to transmit WCDMA on Band B. The scenario is used when WCDMAtransmission in dedicated mode (on Band A) is needed (RP3-blocking SW cannot beused).

Prerequisites

1 Install the correct GSM/WCDMA BTS Site Manager version on yourcomputer(s).Ensure you have all the required WCDMA licenses downloaded on your computer.


2 Optional: Update the SMs' SW.If the SW update is needed for the WCDMA and GSM SMs, update them remotely tosave the site visit time.

3 Back up the GSM commissioning file.


4 Switch off the WCDMA and GSM SMs.

ResultThe WCDMA and GSM traffic goes down.

5 Install the new optical cables for RF Sharing.To connect the modules for RF Sharing configurations, see Flexi Multiradio BTS RFSharing 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 SM - 3 Gbps or 6 Gbps. Incase of LTE, always use 6 Gbps SFPs and optical links, when supported by the usedHW.


Issue: 04 DN09172017 23

6 Commission WCDMA to RF Sharing.a) Switch on the WCDMA SM.

Connect to the SM locally and run the BTS Site Manager.If Incompatible SW version detected (0023) alarm is raised, download the SWagain.

Result

Band B RFM/RRH is detected.

b) In BTS Site Manager, select reconfiguration, as shown in Figure 5:Commissioning - reconfiguration, target: BTS, and update the informationregarding the shared Band B RFM(s)/RRH.

Figure 5 Commissioning - reconfiguration, target: BTS

c) Save the commissioning parameters and send them to BTS.BTS gets reset and is recommissioned to RF Sharing mode.ResultBand A cells are active, Band B cells are inactive (locked in RNC).

7 Commission GSM to RF Sharing.a) Power up the GSM SM.

Connect to the SM locally and run the BTS Site Manager. Two alarms areactivated:


24 DN09172017 Issue: 04

• BCF NOTIFICATION: Shared RF module detected two synchronizationmaster sources.

• TRX FAULTY: TRX object allocation failed in RF module.

Figure 6 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 theWCDMA BTS SCF. Choose RFMs to be shared/dedicated in a pop-up window,as in Figure 7: GSM BTS - selecting shared/dedicated modules.If the shared RFMs'/RRHs' climate-control has not been set in WCDMAcommissioning, a window pops up, press Close to ignore it.


Issue: 04 DN09172017 25

Figure 7 GSM BTS - selecting shared/dedicated modules

c) Proceed to Local Sector Settings page and create the GSM configurationsagain.Important: 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.

Result

All TRXs are in working state. At this point, non-blocking alarms for the TRXs whichoverlap with WCDMA carrier BW: "TRX OPERATION DEGRADED: TRX objectallocation failed in RF module" (7607) are expected.


• 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 visitPerform the steps only when the legal license to transmit WCDMA on band B isacquired.


26 DN09172017 Issue: 04

8 Connect remotely to the BSC and perform the TRX removal procedure: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 - commandZERS

g Note that TCH-TRXs have to be allocated at least 2 MHz away from the WCDMAcell's center frequency. Thus overlapping the edges of WCDMA cell bandwidth isallowed.

d) Delete the locked TCH-TRXs (command ZERP) or modify their ARFCN(command ZERM)

e) Unlock the GSM BTS (sector) - command ZEQS

f) Unlock the BCF - command ZEFS

ResultThe GSM TRXs go on air.

9 Unlock the WCDMA Band B WCELs on RNC.

ResultThe WCDMA Band B cells go on air.


Issue: 04 DN09172017 27

3 Commissioning RF sharingList of instructions on how to commission RF sharing.

3.1 Commissioning WCDMA for 2-RAT RF SharingSteps 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 Deployment scenarios have been completed.

g The RF Sharing is a part of the commissioning procedure. Commissioning proceduresare described in detail in the technology-specific documents. The RF Sharingcommissioning steps have to be taken in addition to the technology-specific steps.

g In RF Sharing configurations, only certain Master-Slave BTS SW combinations, SWupgrade paths and configurations are tested, recommended and officially supported.Using any other SW combinations, upgrade path or configuration might causeunexpected problems.

Preconditions:

• The BTS Site Manager is running and connection to the BTS is established. Alwaysuse the matching BTS Site Manager version, considering the running BTS SWversion.

• Appropriate SW and licenses are downloaded to the BTS.• 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.

1 Start commissioning.Select Commissioning, Target: BTS, Commissioning type:

• if the WCDMA BTS has not been commissioned at all:Template/Planned/Manual

• if the WCDMA BTS has already been commissioned: Reconfiguration

ResultThe BTS Settings page appears. Note that the Slave technology (GSM or LTE)System Module is not detected yet.

2 Proceed to Concurrent Mode Settings.Tick the RF sharing enabled check box, choose the shared technologies (3G-2G or3G-LTE), enter the product code and serial number of the Slave SM, and choose the

Commissioning RF sharing Configuring RF Sharing

28 DN09172017 Issue: 04

shared RFMs/RRHs. The parameter Synchronization master is configurable fromRU50 EP1 onwards. Select FSMx 1 from the Synchronization master dropdown list.Figure 8: WCDMA - Concurrent Mode Settings shows exemplary settings for 3G-2GRF Sharing.

g At least one RFM/RRH must be selected as shared.

Figure 8 WCDMA - Concurrent Mode Settings

3 Proceed to Local Cell Resources.Remember the settings on this page, as they affect the later Slave technologysettings. Figure 9: WCDMA - Local Cell Resources shows exemplary settings for 3G-2G RF Sharing

g Make sure that the power sums of both WCDMA carriers and LTE carriers/GSM TRXsdoes not exceed the RFM's/RRHs' maximum output power. (Except whenBSS21507: Flexible MCPA TX Power Pooling is activated in GSM.)

Configuring RF Sharing Commissioning RF sharing

Issue: 04 DN09172017 29

Figure 9 WCDMA - Local Cell Resources

4 Proceed to WCDMA Carrier Candidates and Local Cell Group Settings.Enter the UARFCN channel value for each Local Cell (use the same value asdefined in the RNC). These UARFCN values are stored in the SCF and are laterused for the Slave technology commissioning. Thus incorrect values may cause TRXobject allocation issues in GSM.

g Make sure that all WCDMA carriers along with GSM TRXs/LTE carriers are within theRFMs'/RRHs' bandwidths.Note that TCH-TRXs have to be allocated at least 2 MHz away from the WCDMA cell'scenter frequency. Thus overlapping the edges of WCDMA cell bandwidth is allowed.


30 DN09172017 Issue: 04

5 Proceed to Radio Module External Fault and Control Settings.Every Radio Module external alarm can be commissioned for either or both of thetwo technologies. For example, if an alarm is commissioned for WCDMA, it is visiblefrom the WCDMA side only.

6 Proceed to the last page - Send Parameters.Select the appropriate Send option:

• 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.Figure 10 WCDMA - Send Parameters

ResultThe WCDMA SM resets and the RF Sharing is activated.

3.2 Commissioning LTE for 2-RAT RF SharingSteps 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




Issue: 04 DN09172017 31

g From RL70 onwards, when RF sharing WCDMA-LTE is activated, LTE SM resets itselfand changes its IP addresses (local M-plane IP address is changed from192.168.255.129 to 192.168.255.127). After the reset the BTS Site Manager reconnectsto 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 theconnection is actually established to the WCDMA (Master) SM . Therefore, thedisconnection and the reconnection need to be done again either using the localconnection probing option, which gives the user a selection of available SystemModules, or using the correct local M-plane IP address of LTE SM directly.

When RF Sharing WCDMA-LTE is setup, the same IP address cannot be shared bymultiple computers.


Preconditions:


• Appropriate SW and licenses are downloaded to the BTS.• 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.

1 Start commissioning.In case of FSMF go through the TRS commissioning first and check the "EnableEIF2 as RP3-01 interface".Figure 11 LTE - Enable EIF2 as RP3-01 interface

Select Commissioning, Target: BTS, Commissioning type:

• when the SCF has been prepared before: Template• when there is no SCF file: Manual

ResultThe BTS Settings page appears. Note that the other technology (GSM or WCDMA)System Module is not detected yet.


32 DN09172017 Issue: 04

2 Proceed to Concurrent Mode Settings.Tick the RF sharing enabled check box, choose the shared technologies (LTE-2G orLTE-3G), enter the product code and serial number of the other technology SM, andchoose the shared RFMs/RRHs. The parameter Synchronization master isconfigurable from RL70 onwards. Select FSMx 1 for LTE-2G and 3G systemmodule for LTE-3G from the Synchronization master dropdown list. In LTE-3G RFSharing configuration select Optical IF for 3G system module from RL70 onwards.Figure 12: LTE - Concurrent Mode Settings for LTE-2G shows exemplary settings forLTE-2G RF Sharing.Figure 13: LTE - Concurrent Mode Settings for LTE-3G shows exemplary settings forLTE-3G RF Sharing.

g At least one RFM/RRH must be selected as shared.

Figure 12 LTE - Concurrent Mode Settings for LTE-2G


Issue: 04 DN09172017 33

Figure 13 LTE - Concurrent Mode Settings for LTE-3G

3 Proceed to Cell Resources.In case of RF Sharing LTE-GSM, remember the settings on this page, as they affectthe later settings in GSM.In case of RF Sharing WCDMA-LTE, calculate the available power, taking intoaccount the values already commissioned to WCDMA.

g Make sure that the power sums of both LTE carriers and WCDMA carriers/GSM TRXsdoes not exceed the RFM's/RRH's maximum output power. (Except whenBSS21507: Flexible MCPA TX Power Pooling is activated in GSM.)

4 Proceed to LTE Carriers.Enter the EARFCN channel value for each Local Cell. These EARFCN values arestored in the SCF and is later used for the GSM commissioning. Select theappropriate Bandwidth. Ensure the Bandwidth is supported by the used HWconfiguration. For details see Flexi Multiradio BTS RF Sharing ReleasedConfigurations.

g Make sure that all LTE carriers along with GSM TRXs/WCDMA carriers are within theRFM's/RRH's UL/DL instantaneous bandwidth, and that they are not overlapping.

5 Proceed to Radio Module External Fault and Control Settings.Every Radio Module alarm can be commissioned for either or both of the twotechnologies. For example, if an alarm is commissioned for LTE, it is visible from theLTE side only.

6 Proceed to the last page - Send Parameters.Select Send: All parameters. Save Parameters, if the SCF is needed for later GSMcommissioning, then Send Parameters


34 DN09172017 Issue: 04

ResultThe LTE SM resets and the RF Sharing is activated.

3.3 Commissioning GSM for 2-RAT RF SharingSteps 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




Preconditions:


• 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).• There are no unexpected alarms.

1 Start commissioning.Select Commissioning Wizard, Change settings manually

2 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 LTEcommissioning, a window pops up, press Close to ignore it.

3 Proceed to Module Configuration.The shared modules are shown (taken from the Master technology's SCF). Ifnecessary, add the GSM-dedicated RFMs/RRHs.


Issue: 04 DN09172017 35

4 Proceed to Local Sectors Settings.

g Note that the “Total max. Capacity” shows a value for both shared technologies.Figure 14: GSM - Local Sector Settings shows exemplary settings for LTE-2G RFSharing. In the example LTE uses 8 W per pipe out of available 60 W - the power leftfor GSM is 52 W, which allows for five TRXs, 10 W each.

Figure 14 GSM - Local Sector Settings

5 Proceed to FRM External Alarm and Control Settings.Every Radio Module alarm can be commissioned for either or both of the twotechnologies. For example, if an alarm is commissioned for GSM, it is visible from theGSM side only.

6 Proceed to the last page - Site Commissioning File.Select Send SCF.ResultThe GSM SM resets and the RF Sharing is activated.

3.4 Recommissioning RF Sharing to change particularsettings in Master technologySteps to recommission RF Sharing WCDMA-GSM or LTE-GSM to change particularsettings (if related to RF Sharing) in Master technology BTS.

PurposeThis section describes the procedure in RF Sharing WCDMA-GSM and LTE-GSM thatneeds to be followed when changing any of the following settings in Master technologyBTS in already commissioned site:


36 DN09172017 Issue: 04

Table 2 WCDMA/LTE settings forcing the GSM recommissioning

WCDMA LTE

Concurrent Mode Settings

Local Cell Resources - Antenna settings

Local Cell Resources - Carrier Power settings

Local Cell Resources - MIMO settings

WCDMA Carrier Candidates and Local CellGroup Settings - WCDMA carrier frequency

(UARFCN)

LTE Carriers - Downlink (Tx) Carriers and LTEBandwidth

Antenna Line Management (AISG communication, DC voltage)

Antenna Line Settings

RET settings

1 Recommission WCDMA/LTE to change the settings.Select BTS target and use Reconfiguration option in WCMDA/LTE BTS SiteManager.

2 Click Send Parameters.

ResultWCDMA/LTE site resets.

3 Save the new WCDMA/LTE BTS SCF file to be used in GSM.Select File in Menu Bar in WCDMA/LTE BTS Site Manager, choose BackupCommissioning Files... and save the BTS SCF file.

4 Recommission GSM using the WCDMA/LTE SCF.Use Change settings manually, go to Hardware Configuration view and browsethe WCDMA/LTE SCF file.Check the settings in each window and click Send SCF button at the end.

ResultGSM BTS resets.

5 Reset WCDMA/LTE BTS.

ResultWCDMA/LTE site, GSM site, and all RF Modules reset.

ResultRF Sharing operates again using the new settings.


Issue: 04 DN09172017 37

4 Rx diversity sharingList of instructions and descriptions of RX diversity sharing.

4.1 Rx diversity sharing requirementsRequirements and detailed information regarding Rx diversity sharing.

The following RF Module (RFM) requirements have to be fulfilled to configure RXdiversity 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 15 Rx diversity sharing requirements

Frequency

Frequency

RFM�1

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Filter TuningIn case the RFM's instantaneous BW is narrower than the 3GPP band BW, the RFModule's filter may need a manual shift to meet the Rx diversity sharing requirements. InWCDMA and LTE BTS Site Manager it is possible to shift the DL filter and in 2G BTSSite 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 frequenciesIn 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 antennalines are used for both technologies with Rx diversity sharing. The GSM TRXfrequencies are usually changed to accommodate the WCDMA/LTE carriers in the sameband. Thus the available GSM ARFCNs have to be calculated.

Example: calculating available ARFCNs, when FXDA RF Module (20 MHz Rx filter passband 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

Rx diversity sharing Configuring RF Sharing

38 DN09172017 Issue: 04

• 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 andlower 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 WCDMAcarrier's center frequency.

In case of LTE, the GSM TRXs have to be allocated outside the LTE carrier BW. Forexample, when LTE carrier BW is 10 MHZ, the GSM carrier frequencies have to beallocated at least 5.1 MHz away from the LTE carrier's center frequency.

Figure 16 Carrier-TRX spacing rules (pictures not in scale)

Frequency

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Rx diversity cablingRx diversity sharing requires two additional RF cables for each sector. Those cablesconnect 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 SharingKit 2m", sales code 472454A.

Configuring RF Sharing Rx diversity sharing

Issue: 04 DN09172017 39

Figure 17 Additional Rx diversity cables connection

PWR�IN ANT 6

Rx

ANT 5

Tx/Rx

ANT 5

Rx�Out

ANT 4

Rx

ANT 3

Tx/Rx

ANT 3

Rx�Out

ANT 2

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EAC OPT 1 OPT 2 OPT 3

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Sector�3 Sector�2 Sector�1

Additional

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cables

Total uplink gainThe BTS receiver expects a certain fixed total gain in the uplink (UL) path, regardless theconfiguration. The total gain at RX Diversity and RX Main have to be approximatelyequal (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, bothpaths 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 gainis set to high, to optimize the Rx sensitivity.

– When there is an MHA or other additional gain in the feeder lines: the LNA gainis 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. Theeventual 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).


40 DN09172017 Issue: 04

Figure 18 Rx diversity signal paths

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Optional

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MHA

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LNA1

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and�RX�Main

is�approximately�the�same

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is�+29�dB

4.2 Commissioning WCDMA or LTE to RX diversitysharingSteps to commission WCDMA or LTE to RX diversity sharing

Initial status

The site is prepared for RX diversity sharing - the cabling is done and BTS Site Managerconnection to the SMs is established.

The commissioning procedure is the same as in the dedicated mode, except for theadditional steps described in this section.

The pictures in this section show the WCDMA Site Manager, but the same steps areapplicable for LTE as well.

1 Start the commissioning.Select Commissioning, Target: BTS, Commissioning type:


Issue: 04 DN09172017 41

• if the BTS has not been commissioned: Template/Manual• if the BTS has been already commissioned: Reconfiguration

2 Proceed to Local Cell Resources (WCDMA) or Cell Resources (LTE).Set three 1TX/2RX sectors.Figure 19 RX diversity sharing: WCDMA - Local Cell Resources

3 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 theRFM's instantaneous bandwidth (BW) is narrower than the 3GPP BW, it isrecommended to tick the Override nominal frequency check box and set the centerfrequency.


42 DN09172017 Issue: 04

g 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 tuningrange is shown in Table 3: Example of manual filter tuning (FXDA).

Table 3 Example of manual filter tuning (FXDA)

DL startfrequency [MHz]

UL startfrequency [MHz]

DL stopfrequency [MHz]

UL stopfrequency [MHz]

900 MHz bandfrequency range 925 880 960 915

Manual tuningrange of FXDAUL filter centerfrequency

935 (925 + 10) 890 (880 + 10) 950 (960 - 10) 905 (915 - 10)

Figure 20 RX diversity sharing: WCDMA - Carrier settings

g Steps Proceed to Antenna Line Management. and Proceed to AISG MHA Settings. arerequired 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.Figure 21 RX diversity sharing: WCDMA - Antenna Line Management


Issue: 04 DN09172017 43

5 Proceed to AISG MHA Settings.Assign the first LNA to This BTS and the second LNA to Other BTS as it is used byGSM.Figure 22 RX diversity sharing: WCDMA - AISG MHA Settings: LNA1

Figure 23 RX diversity sharing: WCDMA - AISG MHA Settings: LNA2


44 DN09172017 Issue: 04

6 Proceed to Antenna Line Settings.Use regular, site-specific values and settings on TX antenna ports (ANT1, ANT3, andANT 5). For RX antenna ports (ANT2, ANT4, and ANT6) use the followingmodifications when using Nokia RDSA cables:

• 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.

Figure 24 RX diversity sharing: WCDMA - Antenna Line Settings - RX antennamodifications

7 Proceed to the last page - Send Parameters.Select the appropriate Send option:

• 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 25 WCDMA - Send Parameters

In the commissioning report check if the parameters are set correctly. This can alsobe checked in Site Information, after the commissioning.

Result


Issue: 04 DN09172017 45

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.

Post requisitesIf WCELs must be kept locked after commissioning due to, for example, missingoperating license (or WCELs are not yet created in RNC), the RFM filters will not tuneinto expected positions. This can cause RSSI problems in GSM as it receives Rx Divsignal via WCDMA RFMs. To avoid this problem, select Tests -> Enter BTS Test Statemenu item and select test model 2 temporarily to enable RFM filter tuning. This can alsobe done remotely provided the O&M link is up and running.

4.3 Commissioning GSM to RX diversity sharingSteps to commission GSM to RX diversity sharing

Initial status

The site is prepared for RX diversity sharing - the cabling is done and BTS Site Managerconnection to the SMs is established.


1 Start the commissioning.Select Commissioning Wizard, Change settings manually

2 Proceed to Antenna Settings.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 3GPPBW, it is recommended to tune the filter manually. The filter tuning is done bysetting the "Distance of beginning of filter band from lower frequency" parameter(in MHz, granularity 0.1) as in Figure 26: RX diversity sharing: GSM - AntennaLine Settings - TX (example).

g 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 EGSMband'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 parametersas listed:


46 DN09172017 Issue: 04

• 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.• Alarm threshold - enter the MHA's alarm threshold manually.

Figure 26 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 usingNokia RDSA cables.

Figure 27 RX diversity sharing: GSM - Antenna Line Settings - RX

c) For Flexi Compact

g This step is valid for GFC until GFC1 EP2.


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Additional RX gain has to be set as a virtual MHA. When using RDSA cables, setthe parameters as listed:

• Feeder voltage - set to "0".• Feeder loss - set to "0".• 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 28 RX diversity sharing: GSM - Antenna Line Settings - RX - for FlexiCompact

3 Proceed to the last page - Site Commissioning File.Click Send SCF.ResultThe SM gets reset and the RX diversity sharing is ready from GSM side.

4.4 LTE-GSM RF sharing with Rx diversity sharing (P-type configuration)Description of a special configuration (type P) for LTE-GSM.

g This section is valid for EX5.1 3.1.0 onwards. This SW release allows to commissioneither one, two or three cells, the previous SW releases allow to configure only threecells.

The configuration allows for up to 1+1+1 LTE 20 MHz MIMO and up to 4+4+4 GSM withFXEA variant A.203 RF Module.


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As FXEA RF Module (RFM) can allocate a total of 20 MHz uplink (UL) LTE signal in eachpipe, it cannot transmit the GSM signal simultaneously. That is why the LTE and GSMresources have to be assigned to separate pipes. In such case the additional Rxdiversity sharing cables have to be connected, to provide Rx Div signal to the othertechnology-dedicated pipes. The configuration with resources allocation is shown inFigure 29: Configuration type P with resource allocation.

In the downlink (DL), full 25 MHz BW can be used to transmit both LTE and GSMsimultaneously in the same pipe.

g Note that when type P configuration is commissioned:

• GSM cannot support additional GSM-dedicated RFMs.• TRX Tests in 2G cannot be run.

Figure 29 Configuration type P with resource allocation

PWR�IN ANT 6Rx

ANT 5Tx/Rx

ANT 5Rx�Out

ANT 4Rx

ANT 3Tx/Rx

ANT 3Rx�Out

ANT 2Rx

ANT 1Tx/Rx

ANT 1Rx�Out


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ANT 5Tx/Rx

ANT 5Rx�Out

ANT 4Rx

ANT 3Tx/Rx

ANT 3Rx�Out

ANT 2Rx

ANT 1Tx/Rx

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FPA Sync-OutOPT OPT LMP Sync-In EAC Q1

PWR PWR PWR PWR PWR

OPT OPT

Pipes

commissioned

to�LTE

Sector�3 Sector�2 Sector�1

Pipes

commissioned

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4.4.1 Commissioning type P configuration in LTE

Steps to commission configuration type P in LTE.

Purpose

Initial status

The site is prepared for RX diversity sharing - the cabling is done and BTS Site Managerconnection to the System Modules (SM) is established.


1 Start the commissioning.Select Commissioning, Target: BTS, Commissioning type:


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• if the BTS has not been commissioned: Template/Manual• if the BTS has been already commissioned: Reconfiguration

2 Proceed to Concurrent Mode Settings.Tick the "RF sharing enabled" check box, choose "LTE-2G" as the sharedtechnologies, enter the product code and serial number of the GSM SM, and tickboth FXEA RF Modules (RFMs) as shared.Figure 30 P-type LTE - LTE Concurrent Mode Settings

3 Proceed to Cell Resources.Configure one, two or three cells and assign the TXs and RXs as shown in#unique_26/unique_26_Connect_42_v101481914, select "Dynamic Open LoopMIMO" and the appropriate Carrier power.


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Figure 31 P-type LTE - Cell Resources

4 Proceed to LTE CarriersSelect 20 MHz Bandwidth for each cell.


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Figure 32 P-type LTE - LTE Carriers

5 (Optional) Configure the MHAs appropriately, if they are useda) Proceed to Antenna Line Management

Ensure that 3GPP/AISG communication and DC Voltage are enabled for allantenna ports having the MHAs.

b) Proceed to AISG MHA SettingsSelect the appropriate Antenna from the pull-down menu.

6 Proceed to Antenna Line SettingsUse regular, site-specific values and settings on TX antenna ports (ANT1, ANT3, andANT 5 on both FXEAs). For the used RX antenna ports (FXEA 1.1.1: ANT2 andANT6, FXEA 1.2.1: ANT4) use the following modifications when using Nokia RDSAcables:

• Set Total loss to "0"• Set Additional RX gain to "28"• Set Uplink delay to "0"

Figure 33 P-type LTE - Antenna Line Settings


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7 Proceed to Send Parametersa) Press Send Parameters to finish the commissioning.

b) After commissioning is complete, choose File -> Backup CommissioningFiles menu item and store the BTS SCF on your computer. The SCF isnecessary for later GSM commissioning.

ResultAll the commissioned LTE Cells go On Air with no unexpected alarms.

4.4.2 Commissioning type P configuration in GSM

Steps to commission configuration type P in GSM.

Purpose

g 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 Managerconnection to the System Modules (SM) is established.


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 LTEcommissioning.

3 Proceed to Local Sector Settings.Configure the sectors as shown in figures.


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Figure 34 P-type GSM - Local sector 1



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4 Proceed to Antenna line settings.Tick the check boxes as in figure.

g In this configuration the 29 dB Rx gain is taken into account automatically.


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Figure 37 P-type GSM - Antenna line settings

5 Proceed to the last commissioning page and click Send SCF.

ResultBoth LTE and GSM are On Air with no unexpected alarms.


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5 Troubleshooting RF sharingList of topics describing the most common problems and solution to them in RF sharing.

5.1 Incorrect filter shift in RX diversity sharingEffects of and solution to incorrect filter shift in RX diversity sharing.

The problem happens when the filter frequency has been shifted manually and the filterexceeds the RFM BW or channel BW.

Table 4 Incorrect filter shift

Effect onWCDMA/LTE

Effect on GSM Solution Result

"Reported fault: RFmodule failure (1840)"

Reported fault:"BTS/TRX FAULTY:TRX object allocationfailed in RF module",diagnostic info: "06"

Recommission theBTS, setting thecorrect filter shiftvalue.

After recommissioningthe alarms are clearedand cells/TRXs go onair.

5.2 Incorrect RP3 cablingEffects of and solution to incorrect RP3 cabling in RF sharing.

WCDMA is commissioned to RF Sharing, GSM is not commissioned yet. RFM/RRHcables are connected incorrectly to the GSM System Module.

• WCDMA (correct connection): The first shared RFM is connected to OPT1, thesecond shared RFM to OPT2.

• GSM (incorrect connection): The first shared RFM is connected to OPT2, the secondshared RFM to OPT1.

Table 5 RFM/RRH cables cross-connected before GSM commissioning

Effect on WCDMA Effect on GSM Solution Result

Cells in the sharedRFM stay on air.

Reported fault:

"Failure in RP3 opticalinterface (4039)"

1. Reported fault:

"TRX/BTS FAULTY:ESMx System Modulehas lost connection toRF Modules"

1. Correct the cableconnections - the firstRFM to OPT1, thesecond RFM to OPT2.

1. The alarm iscleared, GSM is readyfor commissioning.

2. Reported fault:

"BCF NOTIFICATION:Invalid or un-commissioned shared

2. Commission theGSM.

2. Alarm is cleared,GSM TRXs go on air.

Configuring RF Sharing Troubleshooting RF sharing

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Table 5 RFM/RRH cables cross-connected before GSM commissioning (Cont.)


RF module HWconfigurationdetected"

5.3 Missing RF Sharing licenseEffects of and solution to missing RF sharing license.

Table 6 Missing RF Sharing license


WCDMA carriers areoperational; minorfault is reported:"License missing...(1885)"

Shared RFMs areblocked; the"Operational state"indicates "Blocked:dedicated to peer"

The fault: "TRX objectallocation failed in RFmodule" (diagnosticinfo "05") is reported.

Install the WCDMA RFSharing license.

GSM TRXs in theshared RFMs/RRHsgo on air; site reset isnot required

5.4 Remote connection to the Slave BTS is lostEffects of and solution to loss of the Slave BTS remote connection in RF sharing.

Table 7 Remote connection to the Slave BTS is lost

Effect on the Mastertechnology

Effect on the Slavetechnology

Solution Result

No effect. Remote connection isnot possible.

Reset the Mastertechnology BTS. Itresets also the Slavetechnology BTS.

Remote connection isrestored.

Note: when GSM isthe Slave technologyand runs in TemporarySync mode, therecovery method maynot succeed.

5.5 TRX Object allocation failed - GSM alarmsEffects of and solution to "TRX Object allocation failed" alarm in RF sharing.

Troubleshooting RF sharing Configuring RF Sharing

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Table 8 TRX Object allocation failed - GSM alarms


Cells in the sharedRFMs/RRHs stay onair.

Fault is reported: 7606- TRX FAULTY - "TRXobject allocation failed"

See TroubleManagement of FlexiMultiradio BTSGSM/EDGE. Theremay be various rootcauses, theDiagnostic info in 2GBTS Site Managerindicates the possibleroot cause.

Alarms are cleared,GSM TRXs go backon air.

Configuring RF Sharing Troubleshooting RF sharing

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Documents

Configuring RF Sharing