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mahr
2012-01-31, 10:05 PM
What Should be the softer/soft handover percentage in the WCDMA Network?? and what are the effects if softer/soft handover increase and decrease???

kin12345
2012-01-31, 10:08 PM
What Should be the softer/soft handover percentage in the WCDMA Network?? and what are the effects if softer/soft handover increase and decrease???
1. 35 to 40%
2. pillot pollutions

mahr
2012-01-31, 10:16 PM
hi Kin12345

what you means by pilot pollutions ?

Aljunaibi
2012-02-09, 07:15 PM
SHO factor should be less than 40%.. if its more then you are going to loss your resources.

boring
2012-02-09, 07:33 PM
soft-handover overhead (this means excluding softer-handover overhead) should be much less than 40% (30% is the optimum target)
the higher it goes, the higher the soft-handover overhead, the higher the consumption in radio, transport, spreading codes and most importantly CEs.

softer-handover overhead does not affect at all transport and CE consumption, so for this reason you should exclude it from your KPIs

hope this helps

zloy_qwer
2012-02-09, 09:01 PM
Dear friends, formula for calculation Soft HO can be different.

whnj07
2012-02-10, 07:39 AM
I guess as the SHO ratio comes down, we see more and more call drops?

boring
2012-02-10, 04:38 PM
I guess as the SHO ratio comes down, we see more and more call drops?

SHO must drop well below 10% (which means very little cell overlapping) in order to see call drops

kentck86
2012-04-10, 10:34 AM
Hi Mate,

Any idea how to resolve SHO Overhead issue? As currently we are having all antenna in W850 where pilot pollution cleaning are hardly to be done, any other idea how to deal with SHO overhead?

thank you


soft-handover overhead (this means excluding softer-handover overhead) should be much less than 40% (30% is the optimum target)
the higher it goes, the higher the soft-handover overhead, the higher the consumption in radio, transport, spreading codes and most importantly CEs.

softer-handover overhead does not affect at all transport and CE consumption, so for this reason you should exclude it from your KPIs

hope this helps

magno22
2012-04-10, 10:50 AM
Which measurement indicate this SHO overhead in iManager M2000? (Huawei)

optwcdma
2012-04-10, 01:47 PM
Soft handover Factor
Active Set Size Uu_ActiveSet_Count Percentage(%)
1 4785 0.615
2 2140 0.275
3 853 0.11
SHO Factor= 0.615 * 1+ 0.275*2 + 0.11 *3 = 1.495
1.2 < SHO Factor <1.7 is OK.

boring
2012-04-11, 12:05 AM
Hi Mate,

Any idea how to resolve SHO Overhead issue? As currently we are having all antenna in W850 where pilot pollution cleaning are hardly to be done, any other idea how to deal with SHO overhead?

thank you

hi,
i'm afraid if your network suffers from pilot pollution, it is bound to have SHO problems (based on typical site arrangments and antenna patterns).
downtilting and pilot power reduction are the only ways to reduce pilot pollution which gradually will reduce SHO.

elkador
2012-04-11, 07:46 AM
Electrical Downtilting should be preferred rather than Mechanical DT. You will see better improvement in SHO.
Anyway, the best (and more expensive) way to reduce a footprint is still to lower your antenna by a few meters...