tunisiana network kpis vers 2

8/7/2019 Tunisiana Network KPIs vers 2

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Company confidential for internal use only

1 Nokia Siemens Networks Presentation / Author / Date

Tunis

March 09 2010

R4 Tunisiana network KPIs


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Introduction

MSS KPIsNewly added KPIs- are mentioned whenever needed

Action recommended - are mentioned whenever needed

Mostly last 2 weeks data is used


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MSS KPIs

CSSR CallSetupSuccessRateHOSR Handover Success Rate

Location Update Success Rate

Paging Success rate

VLR filling rateTDM signaling Links/route

SMS SR

MSS BHCA


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MSS KPIs: CSSR CallSetupSuccessRate

2nd MGW Rehoming,

-TMD signaling congestion caused problem


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MSS KPIs: HOSR Hanover Success Rate

Handovers are analyzed by dividing it into three types: IntraMSS HO SR

InterMSS HO Outgoing

InterMSS HO Incoming

Moreover HO failure doesnt mean that the call is dropped

Therefore 3 new KPIs are presented here that tell of thedropped calls percentages during HO. They are

IntraMSS HO_DroppedCalls%

InterMSS HO_DroppedCalls_Outgoing%

InterMSS HO_DroppedCalls_Incoming%


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MSS KPIs: HOSR Handover Success RateMSS SRZ


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MSS KPIs: HOSR Handover Success RateMSS SRZ- Dropped Calls %

Dropped%= Dropped/(total HO attempts)


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MSS KPIs: HOSR Handover Success RateMSS4


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MSS KPIs: HOSR Handover Success RateMSS4- Dropped Calls %



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MSS KPIs: HOSR Handover Success RateMSS GBS


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MSS KPIs: HOSR Handover Success RateMSS GBS- Dropped Calls %



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MSS KPIs: Location Update Success Rate%


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MSS KPIs: Paging Success rate%


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MSS KPIs: VLR Filling Rate%

MSS GBS needs additional VLR capacity

Otherwise it will effect service of subs


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MSS KPIs MSS4: TDM signaling link, Rx

Only 2 signaling Links andhighly loaded by traffic henceresults into HLR Mapsignaling failure=> CSSRdegradation

Needed urgently:

Urgent increase in Signaling Links

All SLs must be below 200mEr usage


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MSS KPIs MSS4: TDM signaling link, Tx

Only 2 signaling Links andhighly loaded by traffic henceresults into HLR Mapsignaling=> CSSRdegradation

Needed urgently:

Urgent increase in Signaling Links

All SLs must be below 200mEr usage


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MSS KPIs MSS SRZ: TDM signaling LinkSet, Rx

All cross 200mErl threshold


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MSS KPIs MSS SRZ: TDM signaling LinkSet, Tx

All cross 200mErl threshold


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MSS KPIs: TDM signaling NetworkObservations & Suggestions

Signaling Network is in very bad shape

Tunisiana needs not only to dimension the next hop links but all the linksover all routes to ensure HLR/IN and ISUP etc signaling do not experienceany slight congestion

200mErl rule is not followed at all

Signaling to a NE is done with one path while the from path is different.

Unnecessary loops-complication

Against dimensioning

Eating network bandwidth

Suggestions to Tunisiana Planning Team:

To bring STPs at earliest

Remove loops

Increase Signaling Links

Do dimensioning end-2-end


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MSS KPIs : SMS MT Success Rate %

New formula is introduced that consider Temporary errors as

success primarily it include those reasons of failure that couldbe subscriber dependence e.g. Inbox of the sub is full to receiveany other SMS or absent subs etc.

Onward both i.e. old and the new formula will be presented


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Company confidential for internal use only21 Nokia Siemens Networks Presentation / Author / Date

MSS KPIs : SMS MO Success Rate %

SMS MO success is very low

Detailed analysis is done and the main finding is that Tunisiana network issuffering from virus generated SMSs- detailed results are shared

Mostly over 50% of MO SMSs are virus generated whose B number isdummy number hence it will result into failure per current implementation

Tunisiana is suggested for a possible easy solution: FN1927


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MSSs BHCA


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Thank you

tunisiana network kpis vers 2

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