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Member
Reputation: 80
WCDMA UL problem
Dears,
I just implemented DAS system on the building. But users complain can not receive calls. I checked on site test and analyse KPI. I think there some UL signal problem but not RTWP. Maybe DAS feeder system has some problem. How to improve uplink receiption? We uses Huawei RAN 15 and DBS3900.
BR
magno
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2014-05-30 10:33 AM
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Re: WCDMA UL problem
I think you should disconnect other operators from the POI and test again. If not try to replay POI.
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Member
Reputation: 80
Re: WCDMA UL problem
There is only one operator and no diversity. Any way to improve UL quality in WCDMA system?
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Member
Reputation: 195
Re: WCDMA UL problem
Originally Posted by
magno22
Dears,
I just implemented DAS system on the building. But users complain can not receive calls. I checked on site test and analyse KPI. I think there some UL signal problem but not RTWP. Maybe DAS feeder system has some problem. How to improve uplink receiption? We uses Huawei RAN 15 and DBS3900.
BR
magno
Assuming you made a acceptance of this site before on-airing right? Power threshold might be low. codes and ce can be maxed out. try increasing power/pcpich in that matter and monitor if you still have bad ul.
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Member
Reputation: 176
Re: WCDMA UL problem
Hope your IBS design & prediction with IBwave is OK.
Perform a IBS test (both idle & active) and locate the problem areas & compare power levels with the design. if you have abnormalities there probably there can be issue in the DAS.
Increasing PCPICH & total TX power may not help if the issue is in UL.
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