Mop Rf-sharing u900

MOP: U900 Site Implementation Outline 1. What is U900? 2. Why U900? 3. How to Implement? i. 3G BTS with Dedicated 900 RF Module (no association with 2G BTS) ii. Antenna Sharing (2G BTS and 3G BTS share antenna only, with HSAG Cable completing RXDiv between the two BTSs) iii. RF Module Sharing (2G and 3G BTSs share 900 RF module) 4. RF-Sharing i. FSMF, ESMC and FXDB module descriptions ii. Installation iii. Commissioning and Integration procedure 5. Appendix: Troubleshooting i. Problems arising in the process ii. Solution to problems

Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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MOP: U900 Site Implementation 1. What is U900? UMTS 900 (U900) is 3G over 900MHz Frequency band. 900MHz has normally been used for GSM and in this case this band is being used for 3G Let’s assume the Operator has been allocated 10MHz bandwidth on 900 band. To do U900 a continuous bandwidth of 5MHz is freed on this 10MHz bandwidth for 3G and so all TRXs are pushed to the other 5MHz bandwidth. This is called Frequency Refarming U900 Band=5MHz

GSM=5MHz

2. Why U900 U900 has key benefits: i. RF propagation of 900MHz signal is good in Rural and Suburban areas. The cell Radius of 900MHz is more than double of that 2100MHz ii. Better outdoor coverage of 900MHz band provides increased in-building penetraion margin iii. Can co-exist with GSM900

3. U900 Implementation There are 3 basic ways an operator can roll out U900: i. The 3G BTS is given a dedicated 900 RF Module (FXDB) and own antenna. This is Dedicated Mode ii. Antenna Sharing The 3G is given dedicated 900 RF module as in case (i) above and 2G also with its dedicated 900 RF module but they share 1 Antenna. The RXDiv is managed between the 2 BTS using HSAG Cable. This is Dedicated Mode also iii. RF Sharing In this method the 3G BTS shares 1 RF module with 2G BTS. This is Concurrent Mode. In the concurrent mode the 3G ids always Master while 2G/LTE is slave. In this MOP we will go into details of RF-Sharing.


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MOP: U900 Site Implementation 4. RF-Sharing i. Description of BTS Modules used in RF-Sharing a. 2G System Module-ESMC/B

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OPT1,2,3 can take RF modules and in case there are more than 3 RF modules on 2G RF Chaining can be done to take extra modules. OPT4/EXT is used for Syncronization in RF-sharing. Here a short Fiber cable not more than 4m is connected for Syncronization with 3G: FSFL=2m; FSOR=4m


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MOP: U900 Site Implementation b. 3G System Module-FSMF

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EIF2/RF/EXT6 is critical in RF-Sharing as the Syncronization port where the FSFL/FSOR is terminated. This port can also be used for Transport on GE, and 6th RF module port. When used for RF or Sync it is activated for use as RP3 during commissioning (to be shown at commissioning stage). When used for Transport it is activated as FSM2 in commissioning. RF/EXT1-3 are used for RF modules normally


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MOP: U900 Site Implementation c. RF module (FXDB/FXEB/FRGT)

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OPT1-3 are connected to System Modules and also for RF Chaining RX01,3,5 are special QMA port used in Co-Siting for Antenna Sharing


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MOP: U900 Site Implementation ii.

Installation of RF-Sharing Configuration We will look at configuration type where only 1 RF module being shared.

Principles/Rules: • The RF Module being shared must be on First RP3 interface of both 2G and 3G, ie, OPT1 and RF/EXT1. Other modules not being shared can take second level RP3 onwards • The RF module being shared must be same RP3 Level, ie, you cannot use OPT1 on 2G and RF/ET2 port on 3G • 3G is always the Master on RF-Sharing so on the RF being shared 3G is connected to OPT1 of that RF while the Slave, 2G/LET is connected on OPT2 or 3 of that RF Module • EIF2/RF/EXT6 of 3G system module and OPT4/EXT of 2G system Module are used for Synchronization and are interconnected with Fiber not more than 4m in length, FSFL=2m or FSOR=4m.


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MOP: U900 Site Implementation Fiber Cabling arrangment for RF-Sharing

FSMF

2100(FRGT)

FSFL/FSOR

900(FXDB)

ESMC/B

1800(FXEB)


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MOP: U900 Site Implementation iii.

Commsissioning and Integration Procedure for RF-Sharing U900 Requirements: a. All hardware is installed and Fibers run between the Modules but FSFC and FSFL/SOR not terminated at least on one end for RF-Sharing b. Datafill showing NodeB parameters for U900 c. Software for NodeB (WN8.1….) and 2G (EX5.1…) Procedure: Step1 2G and 3G must be already live independently before RF-Sharing. The 2G may be Single-Band 900MHz only or Dualband of 900/1800MHz; 3G is Single-Band of 2100MHz. - 2G System Module ESMC ONLY is currently connected to OPT2 of FXDB - FSFC from 3G system module is terminated on FXDB OPT1 but not yet on RF/EXT1. - Sync Cable(FSFL/FSOR)) is currently connected on EIF2/RF/EXT6 of FSMF but not yet terminated on OPT4/EXT of ESMC Step2 Switch off 2G System Module ESMC Step3 -Terminate FSFC fiber from FXDB OPT1 to RF/EXT1 of FSFM -Terminate FSFL/FSOR from EIF2/RF/EXT6 to OPT4/EXT of ESMC Step4 -Log in to FSFM and back up Commissioning File, see prnt-scrn below -FXDB is now Visible -Update Softaware once FXDB is visble -Now proceed to Commissioning and Reconfigure as shown on prnt-scrns below. The Prn-Scrns show only parts where changes will be made to activate and Inetgrate RF-Sharing


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MOP: U900 Site Implementation

-Save Current Commissioning File (create Folder and Save it there)

Saving this current SFC is critical so that in case of reverting you just reload without stress of re-commissioning from datafill

Update Software Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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MOP: U900 Site Implementation -Once FXDB is visible go to SW update and perform sw update

Go to Commissioning and Select Reconfiguration

Ensure: FXDB is 1.1.1; FRGT is 1.2.1 If not then swap the fibers


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MOP: U900 Site Implementation In next slides only pages where changes are made will be shown:

Check this box to activate EIF2/RF/EXT6 as RP3-01 interface. It can now be used for Synchronization or for RF module

Once EIF2/RF/EXT6 is activated then it can no longer be used as RP3-01; so it greys out


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MOP: U900 Site Implementation Go on next and make changes as per datafill

Check for FXDB, though not mandatory

Add values as per data-fill

Go next to Concurrent Mode Settings where RF-Sharing will be activated Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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Check RF sharing box to enable RF sharing—license already fixed at RNC

Select the shared Technology (3G2G) . Once this is done ESMX appears below FSMF as shown

You can add Part and Serial Numbers of the 2G System Module ESMX, but not mandatory 3G has now taken ownership of FXDB (3G is the Master in any RF-sharing) and wants to know which System Module want to share it with. Activate Shared with 2G

Continue next to configure the Antennas Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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U2100 Cells already configured. Don’t change

Create the U900 Cells with Carrier Power as on data-fill. Notice that cell numbers 4,5,6 are reserved for second Carriers of U2100. See next Slide


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MOP: U900 Site Implementation U2100 with 2 carriers

U2100 Second Carrier Cells for sites with 2 carriers on U2100 configured with carrier power as in data-fill


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MOP: U900 Site Implementation Go on.. to Carrier Candidates and Local Cell Group Seetings

U2100 UARFCN already configured. Don’t change

U900 UARFCN as given on data-fill


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MOP: U900 Site Implementation For Site with 2 Carriers on U2100 configure as below according to data-fill

2nd U2100 URFCN; Here we may separate the Local cell group of U2100 and U900 by checking Local Cell Group in use and lumping all U2100 as Group 1 and U900 as group 2 as per data-fill


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MOP: U900 Site Implementation Go next…and configure as per datafill

Add parameter as per data-fill


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MOP: U900 Site Implementation Go next and go as per datafill


Go next…


….Go next……and Send Paramerters to recomission with RF-Sharing Once Recommissioned fully the BTS Manager reconnects automatically and appears as below. Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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MOP: U900 Site Implementation The U2100 Cells are already on air. If alarm of SW Mismatch, update SW again. Once ok ask for unlock of U900 Cells.

U900 Cells

U2100 Cells

Step 5 Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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MOP: U900 Site Implementation -Back up Commissioning File and then switch off 3G System Module FSMF. -Switch on 2G System Module ESMC and login

This is very critical. Now the SCF contains RF-Sharing. This SCF is going to be used to re-commission 2G System Module in next steps

Save 2G SCF then go to Commissioning Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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Click No to continue

Go next to Hardware Configuration Select Specify from File Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)

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MOP: U900 Site Implementation Browse to open the 3G BTS SCF with RF-Sharing saved in last step above


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When the SCF is opened and next clicked this appears automatically


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Configure the other dedicated RF Modules such as for 900 and 1800 not being shared


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Do not check OPT1 as Radio Master. The warning below will appear


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MOP: U900 Site Implementation …Go next and Configure the Sectors normally giving the required per TRX power settings


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MOP: U900 Site Implementation …Go next…till Transmission. Here you can check either ‘Upload from BTS’ or ‘Do not Change Settings’

…then Go next…till send SCF


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MOP: U900 Site Implementation Finally when 2G is up it appear this way. Switch on 3G System Module now Shared 900 RF Modules

Dedicated RF Modules


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MOP: U900 Site Implementation 5. Appendix: Troubleshooting Alarm1

This occurs when a 2G system module is resetting in a RF shared site

Alarm2 -‘Software Mismatch in Commissioned shared RF module’: always update software whenever this alarm appears Alarm3 -‘Transmission PIU for 2G connection lost’: this occurs when procedure is not followed correctly where FSFL/FSOR is connected to 2G System Module when it is powered on and RF-Sharing is not configured yet. At times the 2G BTS may not allow login when this alarm is active. To clear this problem allow the 2G system module time to update Software by itself to the PIU then it will detect again and allow login. This has potential for serious delay in doing RF-Sharing integration and so always follow the procedure correctly.

WISH YOU THE VERY BEST IN U900 INETRATION


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Mop Rf-sharing u900

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