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RNO Case Security Level:

Case Title: Improve Radio Resource utilization to improve HSDPA throughputAuthor A00319733Date 3 - 6 - 2015Product &

Version

RAN-17

ProlemDescription

In Country L Project W the customer wanted to increase HSDPA downlinkthroughput.

AlarmIn!ormation

None

HandlingProcess

It was suggested to the operator in that country to decrease the

IuPSel!oA"#mr to reduce DL power unnecessarily reser$ed %or signaling&so that HSDPA users can use it.

I% C! doesn't send I()*LS*AS*)C+,,A!D message& DCH user withoutA" will use the resource %or long time& so we set such protect mechanism-y the timer. I% timer epires& !C will send I()*L*AS*)*/(*S#message to C!.

2016-01-16 HUAWEI Confidential Page1, Total3


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A%ter this change it was %ound that the non0HSPA power decreased and theHSDPA mean channel throughput increased& as shown -elow1

Parameter description:

#imer %or not releasing signaling o$er the Iu0PS inter%ace when no PS A" isset up. A%ter this timer epires& the !C sends a A!AP I( *L*AS**/(*S# message to the C!.

I% the $alue o% this parameter is too large& the radio resource usageincreases and currently it is set to 233s. We suggest reducing the $alue o%this parameter so that more resources -ecome a$aila-le to the users

%aster.

MML Command:

S*# (S#A#*#I,*1 IuPSel!oA"#mr 4536

Root Cause High #CP %or non HSPA ser$ices results to less power a$aila-le %or HSPAser$ices

Solution Proposed modi7cation to decrease IuPSel!oA"#mr %rom 233ms to 53ms

to impro$e resource utilisation



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Result HSDPA throughput and #CP %or non HSPA ser$ices decreased

SuggestionandSummar"

Due to restricted power to the HSDPA ser$ices higher power utili8ation -ynon HSPA ser$ices will cause HSDPA throughput to decrease. +ptimi8ingresource utili8ation can impro$e the accessi-ility& retaina-ility andthroughput

Attachment !(LL

Re!erence


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