Download - Mop Rf-sharing u900
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
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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
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 2 of 30
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
Lets 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
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.
U900 Band=5MHz GSM=5MHz
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
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4. RF-Sharing
i. Description of BTS Modules used in RF-Sharing
a. 2G System Module-ESMC/B
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 4 of 30
b. 3G System Module-FSMF
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 5 of 30
c. RF module (FXDB/FXEB/FRGT)
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 6 of 30
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 7 of 30
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 8 of 30
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 Dual-
band 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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 9 of 30
-Save Current Commissioning File (create Folder and Save it there)
Update Software
Saving this current SFC is critical so that in
case of reverting you just reload without
stress of re-commissioning from datafill
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 10 of 30
-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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 11 of 30
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 12 of 30
Go on next and make changes as per datafill
Go next to Concurrent Mode Settings where RF-Sharing will be activated
Add values as per data-fill
Check for FXDB, though
not mandatory
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 13 of 30
Continue next to configure the Antennas
Check RF sharing box to enable RF
sharinglicense already fixed at RNC
Select the shared Technology (3G-
2G) . 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
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 14 of 30
U2100 Cells already
configured. Dont 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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 15 of 30
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 16 of 30
Go on.. to Carrier Candidates and Local Cell Group Seetings
U2100 UARFCN
already configured.
Dont change
U900 UARFCN as
given on data-fill
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 17 of 30
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 18 of 30
Go nextand configure as per datafill
Add parameter as
per data-fill
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 19 of 30
Go next and go as per datafill
Go next
.Go nextand Send Paramerters to recomission with RF-Sharing
Once Recommissioned fully the BTS Manager reconnects automatically and appears as below.
Add parameter as
per data-fill
Add parameter as
per data-fill
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 20 of 30
The U2100 Cells are already on air.
If alarm of SW Mismatch, update SW again. Once ok ask for unlock of U900 Cells.
Step 5
U900
Cells
U2100
Cells
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 21 of 30
-Back up Commissioning File and then switch off 3G System Module FSMF.
-Switch on 2G System Module ESMC and login
Save 2G SCF then go to Commissioning
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
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 22 of 30
Go next to Hardware Configuration Select Specify from File
Click No to
continue
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 23 of 30
Browse to open the 3G BTS SCF with RF-Sharing saved in last step above
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 24 of 30
When the SCF is opened
and next clicked this
appears automatically
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 25 of 30
Configure the other
dedicated RF Modules
such as for 900 and 1800
not being shared
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 26 of 30
Do not check OPT1 as Radio
Master. The warning below
will appear
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 27 of 30
Go next and Configure the Sectors normally giving the required per TRX power settings
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 28 of 30
Go nexttill Transmission. Here you can check either Upload from BTS or Do not Change Settings
then Go nexttill send SCF
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MOP: U900 Site Implementation
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 29 of 30
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
Author: Kenneth Otieno Owuor ([email protected]/[email protected]+254787507093/+254720276207)
Page 30 of 30
5. Appendix: Troubleshooting
Alarm1
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
This occurs when a 2G
system module is
resetting in a RF shared
site