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Member
Reputation: 54
HSDPA throughput fluctuate?
Dear Expert,
I had a problem in HSDPA throughput, for certain time throughput value is very low it meant it comes to 0 value and after some time the value reaches the maximum throughput 2 to 3 Mbps. For that location CQI is very good value is 21 and we used Dynamic pdscch codes. value is 5 to 10.RSCP for that location is -75 to 80. Ec/Io also very good range is -3 to-6. According to my decision there is no pblm in drive side, Could u help me for this.
Vendor : Huawei
RAN : 11
Modulation : 16QAM
Channel Element :384
Iub interface : there is no conjestion.
This problem is occur in all over the network
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2011-02-03 01:12 AM
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Member
Reputation: 149
Re: HSDPA throughput fluctuate?
See for SGSN setting timer for that
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Re: HSDPA throughput fluctuate?
During this problem, is it move to fach or still in HSDPA ?
And you have to see the RT Power utilization. and check also whether alot unnecessary sho attempt.
br
Originally Posted by
prasath085
Dear Expert,
I had a problem in HSDPA throughput, for certain time throughput value is very low it meant it comes to 0 value and after some time the value reaches the maximum throughput 2 to 3 Mbps. For that location CQI is very good value is 21 and we used Dynamic pdscch codes. value is 5 to 10.RSCP for that location is -75 to 80. Ec/Io also very good range is -3 to-6. According to my decision there is no pblm in drive side, Could u help me for this.
Vendor : Huawei
RAN : 11
Modulation : 16QAM
Channel Element :384
Iub interface : there is no conjestion.
This problem is occur in all over the network
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Member
Reputation: 163
Re: HSDPA throughput fluctuate?
i think for Cell FACH actually not zero but 8kbps or 16 kbps depend on RNC setting. if problem no congestion please also seeing signalling congestion on secondary (SCCCH). After that check your SGSN setting
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Member
Reputation: 141
Re: HSDPA throughput fluctuate?
Originally Posted by
Irna
i think for Cell FACH actually not zero but 8kbps or 16 kbps depend on RNC setting. if problem no congestion please also seeing signalling congestion on secondary (SCCCH). After that check your SGSN setting
how to check SGSN setting ?
please list which setting to check, and what should be the best value ?
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Member
Reputation: 141
Re: HSDPA throughput fluctuate?
Originally Posted by
gprastomo
During this problem, is it move to fach or still in HSDPA ?
And you have to see the RT Power utilization. and check also whether alot unnecessary sho attempt.
br
agree with Gito, its good to have minimum SHO attempt, also minimize active set number. if it is the problem, you can try increase HspaTimerLen to minimize possibility of event 1d
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Member
Reputation: 149
Re: HSDPA throughput fluctuate?
i thinks HSDPA not using SHO ?
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Member
Reputation: 172
Re: HSDPA throughput fluctuate?
Originally Posted by
prasath085
Dear Expert,
I had a problem in HSDPA throughput, for certain time throughput value is very low it meant it comes to 0 value and after some time the value reaches the maximum throughput 2 to 3 Mbps. For that location CQI is very good value is 21 and we used Dynamic pdscch codes. value is 5 to 10.RSCP for that location is -75 to 80. Ec/Io also very good range is -3 to-6. According to my decision there is no pblm in drive side, Could u help me for this.
Vendor : Huawei
RAN : 11
Modulation : 16QAM
Channel Element :384
Iub interface : there is no conjestion.
This problem is occur in all over the network
Hi,
To be honest with you it is quite difficult to be said what might be the reasons for your problem without additional info. If you can provide some more information, drive tests, LMT IMSI trace or .... probably we can help you out.
BR
Alex
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Member
Reputation: 141
Re: HSDPA throughput fluctuate?
Originally Posted by
riyantoyadi
i thinks HSDPA not using SHO ?
everybody knows this..
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Member
Reputation: 218
Re: HSDPA throughput fluctuate?
Originally Posted by
prasath085
Dear Expert,
I had a problem in HSDPA throughput, for certain time throughput value is very low it meant it comes to 0 value and after some time the value reaches the maximum throughput 2 to 3 Mbps. For that location CQI is very good value is 21 and we used Dynamic pdscch codes. value is 5 to 10.RSCP for that location is -75 to 80. Ec/Io also very good range is -3 to-6. According to my decision there is no pblm in drive side, Could u help me for this.
Vendor : Huawei
RAN : 11
Modulation : 16QAM
Channel Element :384
Iub interface : there is no conjestion.
This problem is occur in all over the network
Check the tranmission alarms or make a ping testin the Iub.
If you get 100% success in the ping test so they will be no transmission problem.
Regards,
Walid
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