How to change max cell Tx power
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Transcript of How to change max cell Tx power
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Security Level:
Slide title :40-47pt Slide subtitle :26-30pt
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www.huawei.com
How to change max cell Tx power
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Incident Description• Due to power congestion issue at xxx area, my
team leader requested me to increase the max tx power to 478 & cpich power to 380 for these cells [2012-03-06, 15.20].
• As per the request script been prepared for RNC & nodeB Due to last minute & late hours preparation,
typo error occurred where node B set 460 while RNC side set as 478 [2012-03-06, 21.00].
Scrip run by RIC team [2012-03-08 03.30] & unblock status of the cells never been checked
RIC team also never check the 1st hour of the stats for the particular cells.
• On morning BO team only check RIC log performed which was successfully & not the stats [2012-03-08 09.00].
• The site didn’t unblocked after script completed by RIC & only BO team realize after the customer complain [2012-03-08 11:25].
Page 2
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Recover process
• We noticed Max tx power for RNC & node B scripted wrongly from the script that sent to RIC team [2012-03-08 11:50].
• We tried to change the node B max tx power setting to 478 as we plan but failed.
• Noticed the configured license for power set as 46dBm & we increased the power license to 47.8dBm.
• We manage to increase the node B power to 478 & unblock the cells
• All the cells start picking up the traffic [2012-03-08 13:30].
Page 3
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Lesson learned
• We learned the lesson from the mistakes as below Try to avoid last minute & late hours
preparation since this can invent more human error or typo error.
Double/triple check the script before implement RIC team must check the cell’s administrative
state as Unblocked to confirm the cell is up. RIC team must check the early hours of the
performance/traffic of the cells BO team must double confirm the
performance/traffic of the cells once they clock in to office.
Page 4
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Max cell Tx power change Process1. Define available power license & enable
needed power license (Without right license in node B, the cell can’t changed to higher power) Example – For 46dBm license (423/3000) need to
be enable while for 47.8dBm license (0/3000) need to be enable
2. RNC side: block the cell and change maxTxPower
3. Node B side: change maxpwr of LOCELL, must same as RNC side (if the value is not same the site cannot be unblocked)
4. RNC side: unblock the cell5. RNC side & node B side: double confirm the
status of cell is activated6. Monitor the real time stats to double confirm
the cell is up & running. Page 5
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Check the 60W license availability• There are two kinds of power license in VHA
project 40W (46dBm) 60W (47.8dBm)
• The availability of power license can be found in M2000 “License” – “NE License management” - “Node B license management”
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Distribute license to Node B (1/2)• The 60W license need to be distributed to Node
B before change cell max Tx power1. Step 1: Select the Node B2. Step 2: Change the number of license need to be
distributed (1 for each PA)
Page 7
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Distribute license to Node B (2/2)• Step 3: Distribute the license
Please double check the license activated status is True
Page 8
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Script to change cell max Tx power• RNC side: block the cell and change maxTxPower
BLK UCELL:CellId=xxxxx,Priority=HIGH; MOD UCELL: CellId=xxxxx,MaxTxPower=478;
• Node B side: change maxpwr of LOCELL, must same as RNC side MOD LOCELL:
LOCELL=1,SECT=LOCAL_SECTOR,MXPWR=478;• RNC side: unblock the cell
UBL UCELL: CellID=xxxxx;• RNC side & node B side : double confirm the
status of cell is activated DSP UCELL:CellID=xxxxx;
Page 9
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
Top right corner for field-mark, customer or partner logotypes.
---------------- The following nine groups of colors are an example of how our design colors can be used, please take note that you should only use one design color group per slide. For specific usage details, refer to the “Typesetting Standard”.
Double confirm the cell is activated1. RNC side & node B side: double confirm the
status of cell is activated In MML command, command “LST UCELL” will give
“cell administrative state” as Unblocked to confirm the cell is up.
2. Monitor the real time stats to double confirm the cell is up & running. Page 10