HSDPA about Throughput is very low 15kb/s [Archive]

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TEMS

2011-02-02, 06:37 AM

althus14

2011-02-02, 07:26 AM

Hi TEMS,

Who is the Vendor? I can try helping you. What is the initial setup for HSDPA? Number of HS-PDSCH Codes? Allocation Mode? The Vendor SW related to which release?6 Or 7?

Regards,
Althus14

Monaco

2011-02-02, 07:49 AM

Check Scan pilot pollution, no of server,RSCP, EcIo and channel Quality Indicator.

zee86

2011-02-02, 08:37 AM

codes and which coding schem u r using

kevin_h811

2011-02-02, 10:59 AM

I agree with Monaco also check number of users during real time, check also possible stats you can gather, i.e. RTWP,congestion,power,code,CE utils, etc.
From there you can pinpoint the problem.
Last option only, is Power adjustment and antenna adjustment, since it might interfere on neighbors or have coverage holes, so be caution in doing this.

Regards//

TEMS

2011-02-02, 11:52 AM

Hi TEMS,

Who is the Vendor? I can try helping you. What is the initial setup for HSDPA? Number of HS-PDSCH Codes? Allocation Mode? The Vendor SW related to which release?6 Or 7?

Regards,
Althus14

thanks to all try to help me
@althus14 (http://www.finetopix.com/members/althus14.html)
the Vonder is Huawei
Number of HS-PDSCH Codes you can check on log file i attach
@Monaco (http://www.finetopix.com/members/monaco.html)
For this site use single site (SSV)
@kevin_h811 (http://www.finetopix.com/members/kevin_h811.html)
This site just finish installation don't had user use also

Please check it on attach file

Cheers,

miister76

2011-02-02, 04:18 PM

thanks man for this

jukreew

2011-02-02, 04:27 PM

I have troubleshooting Huawei document about HSDPA low tp
please see in attachment file

agenov

2011-02-02, 11:34 PM

Daer evryone,
Please help me solve the problem about HSDPA Throughput is very low 15kb/s

please check it on attach log file and help me to solve this problem

I use TEMS Inv V9.0 and Data card can support 7.2 mb (Sierra Wireless AirCard881u) test it on MS-2

and which one parameter at the RNC we can change it to improve speed for HSDPA

Mellion thanks for help me

Hi,

No big findings.
What can be seen are most of the time is used QPSK and small TB size as DTX around of 50% which is strange taking into account good radio conditions.
I would suggest you following actions:

1) Start downloading and use LMT IMSI trace and Wireshark in parallel.
2) Try the test with another data modem.
3) Use internal server connect directly to the GGSN.
4) Just in case double-check your Iub configuration.

From LMT trace and wireshark you can find probably where the problem comes from.

Wish you success.

Br
Alex

radio_network

2011-02-02, 11:41 PM

3G Huawei:
In some sectors alone the speed is too good 350 KBps comapred to 60 KBps in other sectors. How to pinpoint the problems or deviations from parameters/counters . please any help.

qaqa

2011-02-03, 12:02 AM

Hi

Have you checked HSDPA parameters setting in the RNC? and the PHY channel/scheduling in the NodeB.

agenov

2011-02-03, 12:15 AM

Hi,

No big findings.
What can be seen are most of the time is used QPSK and small TB size as DTX around of 50% which is strange taking into account good radio conditions.
I would suggest you following actions:

1) Start downloading and use LMT IMSI trace and Wireshark in parallel.
2) Try the test with another data modem.
3) Use internal server connect directly to the GGSN.
4) Just in case double-check your Iub configuration.

From LMT trace and wireshark you can find probably where the problem comes from.

Wish you success.

Br
Alex

And something totally apart from your case. I noticed that the cell 616 in your RNC1 use RSCP for reselection. I wouldn't recommend it. In my opinion it should be set to Ec/No but could be operator strategy as well in specific cases...just mention it.

.cellSelectReselectInfo
- . . .cellSelectQualityMeasure:- cpich-RSCP