Optimizing for SDCCH Call Drop

**olly** · 2012-07-18, 07:45 PM

Please if any one has experience on how to optimize for SDCCH call drop accross LAC boundary cells and far coverage cells, should please reply. Thanks

**usama0795** · 2012-07-19, 03:35 PM

quickest way to improve SD Drop Rate is to re-map SDCCH to hopping TSLs if equipped on BCCH TSL and vice versa......

**airian** · 2012-07-19, 03:53 PM

What about enabling SDCCH handovers, has anyone tried these on high SDCCH drop rate cells??

**usama0795** · 2012-07-19, 04:11 PM

SDCCH HOs doesnt work tried them once severly degraded HSR since I think MRs are not accurate enough to make decision.....

**airian** · 2012-07-19, 05:07 PM

Originally Posted by usama0795

SDCCH HOs doesnt work tried them once severly degraded HSR since I think MRs are not accurate enough to make decision.....

on which vendor you tried.

**abc123ww** · 2012-07-19, 05:14 PM

Originally Posted by airian

What about enabling SDCCH handovers, has anyone tried these on high SDCCH drop rate cells??

Do you have documents about SDCCH handovers? BRs.

**usama0795** · 2012-07-19, 06:23 PM

Find some extracts from GSR-9 ******** Documentation expaining SDCCH HOs:

Attachment 28736 Attachment 28737 Attachment 28738 Attachment 28739

**usama0795** · 2012-07-19, 06:26 PM

In addition see the below snap as well which shows that first couple of MRs on SDCCH are mostly faulty; therefore in order to activate SDCCH HO there is a give of call setup time as it degrades for the SDCCH HO to work properly......

Attachment 28740