View Full Version : Drive tesing Soft Handover Overhead/Ratio Formula request ??? !!!!
khaldounh
2013-06-10, 10:23 PM
Dear Experts
As I know there are many formulas for SHO overhead/Ratio that can be calculated from drive test data,can any one provide me with this formula please????
Thanks & best regards
Khaldounh
samuraial
2013-06-10, 11:20 PM
From someone,
For optimising the Soft Handover (SHO) usually a parameter "Soft Handover (SHO) Overhead" is measured and tuned. This value is easy to measure. The metric, i.e. measured value of "SHO Overhead" is tuned to a (arbitrary) specific target value. This target value is determined based on uniform traffic distributions and provides decent network performance for such cases. The target for the "SHO Overhead" in the tuning is also often set to a value which is acceptable in terms of the allowedcapacity for the backbone network, e.g. Iub links. The importance of the "Soft Handover Overhead" metric is to make sure that the overhead in terms of the number of connections per cell is not excessive.
Soft Handover Overhead is calculated in two ways. 1) Average Active Set Size – Total Traffic / Primary Traffic. 2) Secondary / Total Traffic
Typical Values are like
1.7 (Avg Active Set Size)
or 35% (Secondary / Total )
Hope it helps.
Regards.
Dear Experts
As I know there are many formulas for SHO overhead/Ratio that can be calculated from drive test data,can any one provide me with this formula please????
Thanks & best regards
Khaldounh
lamhd_bk
2013-06-10, 11:59 PM
we know that SHO Overhead is a ration of resource consumption. This is formular of Nemo
(As_size_1_count + As_size_2_count*2 + As_size_3_count *3)/((As_size_1_count + As_size_2_count + As_size_3_count) -1)*100
RGs
khaldounh
2013-06-11, 05:05 PM
we know that SHO Overhead is a ration of resource consumption. This is formular of Nemo
(As_size_1_count + As_size_2_count*2 + As_size_3_count *3)/((As_size_1_count + As_size_2_count + As_size_3_count) -1)*100
RGs
Bro I'm getting value equal to 110% by using this formula, please advice
br
Khaldounh
lamhd_bk
2013-06-11, 05:09 PM
Bro I'm getting value equal to 110% by using this formula, please advice
br
Khaldounh
Sr, this is formular
((As_size_1_count + As_size_2_count*2 + As_size_3_count *3)/(As_size_1_count + As_size_2_count + As_size_3_count) -1)*100
samuraial
2013-06-11, 05:38 PM
Check this material friend,
http://www.scribd.com/doc/46265448/Soft-and-Softer-Handover-in-WCDMA
Regards.
khaldounh
2013-06-11, 06:08 PM
we know that SHO Overhead is a ration of resource consumption. This is formular of Nemo
(As_size_1_count + As_size_2_count*2 + As_size_3_count *3)/((As_size_1_count + As_size_2_count + As_size_3_count) -1)*100
RGs
Thank you very much, it was my fault, I got correct result
Br
Khaldounh
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