-
Member
Reputation: 119
About SHO factor
Hi Experts;
As you know, SHO factor should be in between 30-40% for whole network. So, in our network, this value is 39% and we have RAB establishment problem, our overall rate is about 86%. And i know that if there are alot of handoff in one cell it produce CE consumption problem and it effects the RAB establishment. When i investigate the some counters i can see that our some cells have low RAB establishment, high handoff attempt(i.e. 132000 per week). If we decrease SHO attempt we can increase our RAB establishment. Am i right? or What kind of solution can we use for this.
BR.
KADIR.
-
2009-12-09 11:26 PM
# ADS
Circuit advertisement
-
Member
Reputation: 50
kadir
have u investigation what is the causeof RAB establishment failure , it would not be just high handoff rate . Do you also know which type of service fail to setup , what is the load on the cell etc.
desi
Originally Posted by
kadir
Hi Experts;
As you know, SHO factor should be in between 30-40% for whole network. So, in our network, this value is 39% and we have RAB establishment problem, our overall rate is about 86%. And i know that if there are alot of handoff in one cell it produce CE consumption problem and it effects the RAB establishment. When i investigate the some counters i can see that our some cells have low RAB establishment, high handoff attempt(i.e. 132000 per week). If we decrease SHO attempt we can increase our RAB establishment. Am i right? or What kind of solution can we use for this.
BR.
KADIR.
-
Member
Reputation: 119
Originally Posted by
desi_larka
kadir
have u investigation what is the causeof RAB establishment failure , it would not be just high handoff rate . Do you also know which type of service fail to setup , what is the load on the cell etc.
desi
Hi friend thank for your reply
i investigated the congestion reasons and i have got;
97.9 % of the RAB Attempts % Not Established(13.8 %) is due to RAB Congestions during Admission control % PS.
what is your suggesiton about that. if it is not only because of high SHO.
br
-
Member
Reputation: 119
and 100 percent of the congestion reason is because of CE consumption.
-
Member
Reputation: 50
check the load on the system
check you bear control , admission control & congestion control thresholds. Also if UE demands high power then also it can happen. I am assuming you have enough HSDPA codes allocated etc..
let me know
Originally Posted by
kadir
Hi friend thank for your reply
i investigated the congestion reasons and i have got;
97.9 % of the RAB Attempts % Not Established(13.8 %) is due to RAB Congestions during Admission control % PS.
what is your suggesiton about that. if it is not only because of high SHO.
br
-
Member
Reputation: 119
and for 100 NodeB, we have;
PS Interactive Type Traffic carried on HS A,DCH excluding SHO=353,46 erlang
AMR voice traffic=27.35
CS Conversational 64 kbps traffic =0.71
PS Interactive Type Traffic carried on R99 DCH (excluding FACH, HS and EUL)=2.77
all these values are for a week.
Bookmarks