Network Benchmarking

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A sample showing benchmarking of networks

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Optimization and Benchmarking:

Optimization and Benchmarking 360Cellutions

Scope:

Scope

PowerPoint Presentation:

Drive testing has regained importance Competitive Benchmarking Location based analysis Closest to customer experience 360Cellutions method of analysis Sample to show Potential, Possibilities Comprehensive, Customer-Centric, Focused

Definitions:

Definitions

Scenario:

Scenario Call Area & Operators Voice: Long Call Data : Downloading, uploading using ftp Timing: D aytime Speed: M oderate < 40Km/h City: Karachi Sharahe Faisal from Airport to Metropole and back DHA Phase 5 and 6 Voice: Mobilink , Telenor, Warid , Zong Data: Mobilink , Telenor Analysis Drive Testing: TEMS Investigation Analysis: Fast Drive Investigation

Criteria:

Criteria GSM Voice GSM Data (GPRS-Edge) Availability: Received Level > -85 dBm Integrity: Receive Quality < 4 Confinement: Timing Advance < 3 Dominance: Server-6 th neighbor < 8 dBm Speech Protection: AMR FR Power Efficiency (UL): MS Tx Power < 19 dBm Mobility: Handover Failures Retainability : Dropped Calls Accessibility: Data Mode is EDGE Integrity: BLER < 10% Throughput RLC : More than 50 Kbps Resource Efficiency: Control %age < 20% Data Efficiency: MCS 6 – MCS9 Capacity: > 2 TS Instability: Idle events vs Reselections Experience: Throughput average

Colours:

Colours

High Level Summary of Results:

High Level Summary of Results

DHA (Voice) Result:

Mobilink (16 points) Warid (14 points) Zong (14 points ) Telenor (12 points) DHA (Voice) Result

DHA (Voice) Result:

DHA (Voice) Result

Shahrahe Faisal (Voice) Result:

Mobilink (16 points) Warid (15 points) Zong (12 points ) Telenor (12 points ) Shahrahe Faisal (Voice) Result

Shahrahe Faisal (Voice) Result:

Shahrahe Faisal (Voice) Result

Shahrahe Faisal (GPRS/EDGE) Result:

Telenor ( 5 points) Mobilink (1 point) Shahrahe Faisal (GPRS/EDGE) Result

Sharahe Faisal (GPRS/Edge) Result:

Sharahe Faisal (GPRS/Edge) Result

Details:

Details DHA Phase 5 and 6

Availability:

Availability Illustrates Receive Level Values better than -85 dBm are good coverage, this eliminates power control affect Poor coverage points will have call quality issues especially in-building Mobilink best; Warid worst Zong has poor coverage in DHA Phase 6 near Misri Shah due absence of sites Warid has poor coverage near Khadda Market due absence of sites Mobilink and Telenor don’t have any major coverage issue Mobilink Telenor Warid Zong

Integrity:

Integrity Illustrates Downlink Received Quality (BER) Low values are better, 0 to 4 is the best range Values more than 4 are call affecting Zong and Mobilink best ; Telenor worst Telenor has one poor quality spot due to poor optimization, although a site nearby Mobilink Telenor Warid Zong

Speech Protection:

Speech Protection Illustrates speech codecs used AMR Full Rate is the best AMR FR provides the best protection against interference and poor quality Warid best, Zong second best; Mobilink worst Mobilink worst probably due to high traffic utilization forcing calls to go on AMR HR Mobilink dimensioning needs to be revisited All operators using AMR throughout which is great Mobilink Telenor Warid Zong

Uplink Power Efficiency:

Uplink Power Efficiency Mobilink best; Telenor close second; Zong and Warid worst The main reason for Zong and Warid poor performance is lack of sites Zong uplink power control needs optimization Illustrates Uplink power level Lower values are good, better PC optimization A way to measure UL performance with drive Mobilink Telenor Warid Zong

Confinement:

Confinement Illustrates the proximity of serving sites with drive samples Low values are good, 0 to indicates the serving cell is within 1 Km High values can indicate lack of sites or poorly optimized areas Mobilink is the best , Warid is the worst along with Zong . Most issues due to poor penetration of sites in Warid and Zong Some issues where nearby sites are not serving due to poor optimization Mobilink Telenor Warid Zong

Dominance:

Dominance Illustrates lack of dominant cells, 6 th neighbour within 8 dB Map thematic shows Rx Level of servers where there was no dominant server Low dominant areas encourage interference, and is a result of poor optimization Mobilink Telenor Warid Zong Warid and Zong the best; Mobilink the worst. Mobilink has not optimized its coverage and too may cells overshooting Warid and Zong are helped by the lack of sites

Details:

Details Sharah -e-Faisal

Availability:

Availability Illustrates Receive Level Values better than -85 dBm are good coverage, this eliminates power control affect Poor coverage points will have call quality issues especially in-building Mobilink Telenor Warid Zong Mobilink the best; Warid the worst Warid has most issues around Base Faisal area, even though there is a site nearby

Integrity:

Integrity Mobilink Telenor Warid Zong Illustrates Downlink Received Quality (BER) Low values are better, 0 to 4 is the best range Values more than 4 are call affecting Mobilink , Zong and Warid best; Telenor the worst. Frequency plan needs optimization

Speech Protection:

Speech Protection Mobilink Telenor Warid Zong Illustrates speech codecs used AMR Full Rate is the best AMR FR provides the best protection against interference and poor quality Warid the best; Mobilink the worst. In case of poor L ink Quality Mobilink customers will feel it the most

Uplink Power Efficiency:

Uplink Power Efficiency Mobilink Telenor Warid Zong Illustrates Uplink power level Lower values are good, better PC optimization A way to measure UL performance with drive Mobilink , Telenor the best; Zong the worst UL window needs optimization and Zong requires a new site in Base Faisal area

Confinement:

Confinement Mobilink and Telenor best; Zong worst Zong has no sites near Base Faisal, which causes far sites to serve Mobilink Telenor Warid Zong Illustrates the proximity of serving sites with drive samples Low values are good, 0 to indicates the serving cell is within 1 Km High values can indicate lack of sites or poorly optimized areas

Dominance:

Dominance Mobilink Telenor Warid Zong Illustrates lack of dominant cells, 6 th neighbour within 8 dB Map thematic shows Rx Level of servers where there was no dominant server Low dominant areas encourage interference, and is a result of poor optimization All similar All networks have significant number of low dominance points due to high number of sites and poor optimization

GPRS:

GPRS Sharah -e-Faisal

Accessibility:

Accessibility Illustrates Edge usage Lack of Edge usage can indicate fault with parameters settings or lack of resources Mobilink DL Telenor DL Mobilink UL Telenor UL Telenor best; Mobilink worst Both networks have GPRS points, which is a concern, it should all be Edge

Throughput (RLC):

Throughput ( RLC) Illustrates Radio Layer Control Throughput Average of than 50 Kbps is deemed good for Edge-GPRS There are various factors that adversely affect RLC Throughput Mobilink DL Telenor DL Mobilink UL Telenor UL Telenor best; Mobilink worst This is the most important factor in Customer experience and Mobilink fails miserably

Data Efficiency:

Data Efficiency Mobilink DL Telenor DL Mobilink UL Telenor UL Telenor best; Mobilink worst Telenor has MCS9 for majority of points which is good, Mobilink has a mixed distribution Illustrates the usage of Coding schemes Average of than 50 Kbps is deemed good for Edge-GPRS There are various factors that adversely affect RLC Throughput

Resource Efficiency:

Resource Efficiency Illustrates Control data percentage, with respect to own data and other data High values indicate an impediment to high throughput Mobilink DL Mobilink DL Telenor DL Telenor best; Mobilink worst Control data utilization is unusually high in Mobilink , which is a major concern Parameters and statistics need to be checked for further investigation Control Data %age 0 – 20 20-50 50-80 80-100

Integrity:

Integrity Illustrates DL Block Error Rate High values indicate poorly optimized network Mobilink DL Telenor DL Mobilink UL Telenor UL Mobilink best; Telenor worst Its misleading for Mobilink since most of the time BLER samples were missing due to high idle mode

Capacity:

Capacity Illustrates number of Timeslots used for data High values are p referred and result in higher throughput Mobilink DL Telenor DL Mobilink UL Telenor UL Mobilink best; Telenor worst If Mobilink can improve other issues it will have better throughput than Telenor

Specific Issues’ Investigation:

Specific Issues’ Investigation

Throughput Analysis:

Throughput Analysis Mobilink Telenor Mobilink DL Throughput (15 Kbps) is extremely poor relative to Telenor (74 Kbps) Two reasons: numerous idle mode (225/39, 94/54) & high %age of control data (13, 49) Statistics analysis and parameter audit required to investigate and solve the problem

Overshoot Warid:

Overshoot Warid High overshooting cells identified with a button click Footprints of two overshooting cells unusually large Redesign required to contain these cells and prevent possible interference

Dropped Call Telenor:

Dropped Call Telenor Servers Neighbour & RxQual Neighbours & Events High overshooting cells identified with a button click Footprints of two overshooting cells unusually large Redesign required to contain these cells and prevent possible interference Missing Neighbour Missing Neighbour

Radio Link Timeout:

Radio Link Timeout Mobilink best; Zong worst Zong has an unusually high value in almost all the points Illustrates the time before a poor quality call drops Values are per half second, i.e. 24 indicates 12 seconds High values indicate poor customer experience Mobilink Telenor Warid Zong

GPRS on Edge Cells Mobilink:

GPRS on Edge Cells Mobilink Some samples on GPRS instead of Edge The same cell has Edge samples so its not a case of Edge disabled Statistics and Parameters investigation required; Congestion on another interface can be a possible reason

High Uplink Power Zong:

High Uplink Power Zong Overview Detailed Most of samples have high UL power Close analysis shows some samples have lower power It takes a long time to reach low power; PC window requires optimization and standardization

Low Coverage Zong :

Low Coverage Zong Overview Detailed Sites not present in a populated area in DHA Sites serve from more than 3 Km away, cause low coverage Site density needs improvement, no logistic issues since commercial area 500m 500m

Zong Timing Advance:

Zong Timing Advance Comparison of TA between Z ong and M obilink is depicted. KRZ1 (BCCH 996 , BSIC 5, LAC 208) is serving strongly resulting in high TA ( approx 2km coverage) High TA for Zong Mobilink Zong Zong

Aggressive power Control:

Aggressive power Control Actual RSSI from KA21253 (BCCH_BSIC: 13_60 ) is between -75 to -80 dBm. Power control decreases power up to -90 to -96 dBm Calls on DCS (preferred layer) but with poor RxQual

Mobilink Warid Handover Comparison:

Mobilink Warid Handover Comparison Many Handovers Far away cells serving MOBILINK WARID

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