For internal use only1 © Nokia Siemens Networks

NSN 2011 Optimization Phase 3

(2G Preliminary Audit & Network Performance/Capacity Issues)

For internal use only2 © Nokia Siemens Networks

EXECUTIVE SUMMARY

Objective: To improve the overall performance in the selected Broadband City Areas:

WJ: Bandung, Cirebon, Tasik Bali-Nisura: Denpasar, Mataram, Kupang Makassar: Makassar

Activities, Scope of Work, KPIs & Scoring:

DETAILS V6

For internal use only3 © Nokia Siemens Networks

AREAS COVERED

West Java:a)Bandungb)Cirebonc)Tasik

Bali Nusra:a)Denpasarb)Kupangc)Mataram

Makassar

For internal use only4 © Nokia Siemens Networks

NETWORK PERFORMANCE

For internal use only5 © Nokia Siemens Networks

VOICE TRAFFIC (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only6 © Nokia Siemens Networks

VOICE TRAFFIC (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only7 © Nokia Siemens Networks

VOICE TRAFFIC DISTRIBUTION

The objective is to push traffic on the 1800 band.

For internal use only8 © Nokia Siemens Networks

VOICE TRAFFIC DISTRIBUTION

Most traffic are on the AMR HR. The objective is to push the traffic to AMR FR to have a better quality, SQI and MOS.

For internal use only9 © Nokia Siemens Networks

TRAFFIC

Traffic balancing needs to be performed in order to push the traffic to DCS. Layering shall be performed in all areas. Umbrella HO will be trialed. 2G to 3G ISHO shall be trialed and activated to push the traffic to 3G. Cell Splitting shall be proposed on high traffic areas/spots to have a better frequency loading.

For internal use only10 © Nokia Siemens Networks

VOICE CSSR (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only11 © Nokia Siemens Networks

VOICE CSSR (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only12 © Nokia Siemens Networks

SD DROP FAILURE (DISTRIBUTION)

GSM band contributes to the higher SD failure. Most of the failure are due to Radio.

Possible causes are overshooting, LAC boundary, Poor UL quality, etc..

2nd most contributor is the Aif, wherein in some BSCs it is quite high.

Need to check the clearcodes and do a tracing to find the detail root cause.

For internal use only13 © Nokia Siemens Networks

SD ATTEMPT (DISTRIBUTION)

Several BSCs have higher LU attempts compared with the MOC and MTC. Need to review the LAC Plan/Boundary.

For internal use only14 © Nokia Siemens Networks

CSSR

CSSR comprises of SD Drop, SD Block, TCH Block and TCH assignment Failure. Most contributor for low CSSR are due to blocking. SD Drop improvement shall be performed by doing the following:

Global Frequency retune Physical Antenna Changes Cell Re-select hysteresis TA advance analysis POC adjustment LAC combining and rebordering Parameter Audit

For internal use only15 © Nokia Siemens Networks

TCH BLOCKING (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only16 © Nokia Siemens Networks

TCH BLOCKING (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only17 © Nokia Siemens Networks

SD BLOCKING (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only18 © Nokia Siemens Networks

SD BLOCKING (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only19 © Nokia Siemens Networks

Blocking

TCH Blocking shall be improved by doing the following: Traffic Sharing FR/HR threshold setting review Reduce the Dedicated Data TSL SD TSL reduction if possible Queuing/DR (seems that in Makassar, queuing is not enabled) TRX Expansion Cell Splitting Microcell Proposal Feature such as OSC (Orthogonal SubChannel) Feature available in RU20Note: Data for Siemens needs to be reviewed again.

SD Blocking shall be improved by: Additional SD if possible LAC rebordering Cell reselect hysteresis adjustment CRO adjustment

For internal use only20 © Nokia Siemens Networks

UL INTERFERENCE (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

Siemens: Interference

Band 2

For internal use only21 © Nokia Siemens Networks

UL INTERFERENCE (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

Siemens: Interference

Band 2

For internal use only22 © Nokia Siemens Networks

INTERFERENCE

For Siemens BTS, this will be further be reviewed. Most interference coming on the GSM, interference scanning shall be performed to find the root-cause.

For internal use only23 © Nokia Siemens Networks

VOICE DCR (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only24 © Nokia Siemens Networks

VOICE DCR (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only25 © Nokia Siemens Networks

DCR (DISTRIBUTION)

Top cause of drop call is due to radio, abis and Rf Old. In several BSCs, there are drops due to Aif failures and transcoder failures.

For internal use only26 © Nokia Siemens Networks

DROP CALL

Drop Call can be improved by doing the following: New Handover Strategy New Power Control Strategy Moving of the calls to 1800 band Moving the calls to AMR FR since most of the traffic are in AMR HR Global Frequency Retune (Improving the quality) Clearing of the Aif Failures and transcoder failures Worst Cell Performance improvement New Hopping Strategy (MAL List, MAIO, HSN, etc..) AMR parameter threshold strategy New Feature trial (e.g. robust amr signalling, DFCA, etc..) Parameter and Adjacency Audit

For internal use only27 © Nokia Siemens Networks

HOSR (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only28 © Nokia Siemens Networks

HOSR (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only29 © Nokia Siemens Networks

HO CAUSE (DISTRIBUTION)

Quite noticeably, that in Makassar & Balinusra area, HO due to Power Budget is not dominant. Need to review the settings.

For internal use only30 © Nokia Siemens Networks

HO FAILURE (DISTRIBUTION)

High HO failure in Makassar due to Outgoing (inter-MSC), main cause is “OutMSC HO fail-adj cell err “. Need to check whether some “unknown cells” are still created in the MSC or even on the RAN database.

For internal use only31 © Nokia Siemens Networks

HOSR

HOSR can be improved by doing the following: Adjacency Audit HOC Threshold Parameter Settings Clearing of the MSC HO failure Handover strategy (by having Power Budget the most cause of HO) ADCE parameter adjustment Using the optimizer tool to do automated HO adjacencies

For internal use only32 © Nokia Siemens Networks

UL QUALITY (DCS)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only33 © Nokia Siemens Networks

UL QUALITY (GSM)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only34 © Nokia Siemens Networks

DL QUALITY (DCS)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only35 © Nokia Siemens Networks

DL QUALITY (GSM)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only36 © Nokia Siemens Networks

UL TBF SUCCESS RATE (DCS)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only37 © Nokia Siemens Networks

UL TBF SUCCESS RATE (GSM)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only38 © Nokia Siemens Networks

DL TBF SUCCESS RATE (DCS)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only39 © Nokia Siemens Networks

DL TBF SUCCESS RATE (GSM)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only40 © Nokia Siemens Networks

TBF COMPLETION RATE (DCS)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only41 © Nokia Siemens Networks

TBF COMPLETION RATE (GSM)

BANDUNG

CIREBON TASIK

KUPANG

MAKASSAR

For internal use only42 © Nokia Siemens Networks

GPRS/EDGE

Most of the failures are due to no resource available. Review of the CDED/CDEF parameter should be done. EDAP re-configuration should be performed in order to maximize the abis TSL which are un-used. Power Control shall be reviewed and corrected as per recommendation. PCU Clustering needs to be done in order to reduce the number of inter-pcu cell reselection which causes degradation of the throughput. Feature trials (DTM, NCCR, High Multi Class, etc..)

For internal use only43 © Nokia Siemens Networks

PAGING DELETION (DCS)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only44 © Nokia Siemens Networks

PAGING DELETION (GSM)

BANDUNG

CIREBON TASIK

BALI

MATARAM

KUPANG

MAKASSAR

For internal use only45 © Nokia Siemens Networks

PAGING DELETION

Several areas have high paging deletion due to high paging on the particular LAC Several cells have paging deletion in which the total pages per LAC is still below the threshold. Those needs to be further audited.

For internal use only46 © Nokia Siemens Networks

CAPACITY

For internal use only47 © Nokia Siemens Networks

WEST JAVA

For internal use only48 © Nokia Siemens Networks

WEST JAVA

For internal use only49 © Nokia Siemens Networks

WEST JAVA

For internal use only50 © Nokia Siemens Networks

WEST JAVA

For internal use only51 © Nokia Siemens Networks

WEST JAVA

For internal use only52 © Nokia Siemens Networks

MAKASSAR

For internal use only53 © Nokia Siemens Networks

MAKASSAR

For internal use only54 © Nokia Siemens Networks

MAKASSAR

For internal use only55 © Nokia Siemens Networks

BALI-NUSRA

For internal use only56 © Nokia Siemens Networks

BALI-NUSRA

For internal use only57 © Nokia Siemens Networks

BALI-NUSRA

For internal use only58 © Nokia Siemens Networks

BALI-NUSRA

For internal use only59 © Nokia Siemens Networks

BALI-NUSRA

For internal use only60 © Nokia Siemens Networks

THANK YOU…