north circle network optimization report of gsm new build (region xx cluster xx) v2.0-2015-4-7.pdf

Network Optimization Report of GSM New-build

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Network Optimization Report Template

of GSM Target Network for (Telecom

Circle XX Target Area/Main Cities /Zonal

Town/Main Road/Wereda Towns)

Huawei Technologies Co., Ltd.

December 26, 2015


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Contents 1 Introduction ......................................................................................................................... 5

1.1 Purpose .................................................................................................................................... 5

1.2 Network Optimization Procedure ............................................................................................ 5

1.3 Scope ....................................................................................................................................... 6

1.4 Test protocol ............................................................................................................................ 6

2 Network Topology ............................................................................................................... 7

2.1 BSC distribution (will be customized according to real scenario) .......................................... 7

2.2 Cluster distribution in case of big cities .................................................................................. 8

3 Target Area Information & Drive Test Route ..................................................................... 9

3.1 Target Area and Drive Test Route Drawing ............................................................................ 9

3.2 Target Area Site List................................................................................................................ 9

3.3 Target Area Site Engineering Parameter ............................................................................... 10

4 Drive Test & OSS KPI ...................................................................................................... 11

4.1 Drive Test KPI (threshold value will be same as like ED7 A11a-1a3) ................................. 11

4.2 OSS KPI (the threshold value should be same like ED-7 A16a-1a) ...................................... 13

5 Drive Test Methodology .................................................................................................... 14

5.1 Call Setup Success Rate ........................................................................................................ 14

5.2 Call Setup Time ..................................................................................................................... 14

5.3 Call completion rate............................................................................................................... 14

5.4 Call Drop Rate ....................................................................................................................... 14

5.5 PDP Context Activation Success Rate .................................................................................. 14

5.6 PDP Context Activation Time ............................................................................................... 15

5.7 FTP EDGE Downlink Throughput according to C/I on BCCH TRX ................................... 15

5.8 FTP EDGE Uplink Throughput according to C/I on BCCH TRX ........................................ 15

5.9 PS Session Termination Success Rate ................................................................................... 15

5.10 Round Trip Time ................................................................................................................... 16

5.11 SDCCH_DROP_RATE ......................................................................................................... 16

5.12 SDCCH_SETUP_BLOCKING_RATE ................................................................................. 16

6 Drive Test Plot ................................................................................................................... 17

6.1 Route & Target Area Information ......................................................................................... 17

6.2 Short Call Best Server BCCH Plot ........................................................................................ 18

6.3 RxLev Coverage Plot............................................................................................................. 18

6.4 RxQual Coverage Plot ........................................................................................................... 19

6.5 Download Throughput Plot ................................................................................................... 20

6.6 Upload Throughput Plot ........................................................................................................ 21

7 Optimization Actions Undertaken ..................................................................................... 22

7.1 RF adjustment ........................................................................................................................ 22

7.2 Parameter optimization .......................................................................................................... 23

7.3 Thematic Optimization .......................................................................................................... 23

8 Attachment ........................................................................................................................ 24

8.1 Engineering parameter table and RF tuning record table ...................................................... 24


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8.2 Radio parameter optimization record table ............................................................................ 24

8.3 Frequency optimization record table ..................................................................................... 24

8.4 Neighbor list optimization record table ................................................................................. 24

9 Certificate of Network Optimization Target Area Report ................................................. 25


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Document Version Control and Modification Tracking

Version Editor Modification made Date


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1 Introduction

1.1 Purpose

The scope of work delivered by Huawei RNO Team on the Network Performance Improvement and

Roll-out Project was a successful achievement. The activities that were implemented during the course of

this program are listed below

Frequency Planning for New Sites

Frequency Retune on Worse Cell List

Neighbors Optimization

Radio Parameter Settings

Correction of Inconsistency Data in the network

Worse Cell Optimization

Alarm monitoring and troubleshooting

Swapped feeder Rectification on New Sites

All activities are properly implemented during the Target Area’s roll out and optimization period.

The Target of the Key Performance Indicator (KPI) is to achieve the threshold listed in chapter 4.

Huawei is intended to provide Ethio Telecom a comprehensive view of the subject Target Area

performance and status within the network to which it has been integrated. This document forms the

formal Final Target Area Acceptance deliverable with-respect-to the subject Target Area.

1.2 Network Optimization Procedure

RNP

Detail Design

RNO

Preparation

Optimization of

Traffic Statistics

KPIs

Coverage

Performance

Optimization

Care for VIP

and Hotspot

Areas

Accepta

nce

Site RF Survey Equipment

Installation，Commissioning &

Implementation

RNP

Preparation

RNO

Tuning

Preparation

DT test

Network

Tuning&

troubleshooting

Initial Tuning

Network

Evaluation

Parameters

audit

RF

Troubleshooting

Huawei & Ethio

Telecom

Ethio

Telecom Huawei

Color Indicator of

Responsibility


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Radio network optimization aims to improve network performance and maximize the benefit of the

existing network resources through parameter collection, data analysis, parameter adjustment, and

necessary technical means after site integrated and expansion.

Single site verification

To verify the functionality of sites, for example site installation, basic functions of the cell. SSV were

done from the first Target Area site on air

Target Area RF optimization

To control interference & pilot pollution, and optimize coverage & 3G neighbor lists.

Services test & Para. Optimization, Trouble shooting

The parameter optimization and troubleshooting were done along all the project phase. During the

project some key issues which effect 2G network quality were solved. For example, SDCCH call drop

issue, SDCCH congestion issue, 2G Call drop issue and so on.

The detail test method, optimization action and result are showed in the following report content.

1.3 Scope

This document will show in sections:

i. Target area information & DT Route

ii. DT KPI&OSS KPI

iii. DT Result Plots

iv. Optimization Actions Undertaken

v. Attachments

vi. Certificate of Network Optimization Target Area Report

1.4 Test protocol

i. The test tools should use: Nemo outdoor, Actix.

ii. Total drive test distance depend on each Target Area.

iii. Average speed should not more than 40 km/h for town, 60km/h for high way.

iv. All drive test measurement should be done in car with mobile terminals (Phone and data card).

v. Rx-Level should be tested by idle mode locked on G900. RX_Qual should be based on long call.

vi. Coverage Test:

Nemo and mobile terminals for main cities, main roads and Wereda Towns;

Considering finishing the project as per the PIP, Probe and mobile terminals will be used for

isolated sites. One sample isolated site can be selected by ET per circle to make the

comparison test between Probe and Nemo.


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2 Network Topology

2.1 BSC distribution (will be customized according to real scenario)


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2.2 Cluster distribution in case of big cities


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3 Target Area Information & Drive Test Route

3.1 Target Area and Drive Test Route Drawing

3.2 Target Area Site List

Huawei ID Longitude Latitude Configuration


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3.3 Target Area Site Engineering Parameter

Huawei ID Cell ID BCCH Height Azimuth Tilt(M/E)


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4 Drive Test & OSS KPI

4.1 Drive Test KPI (threshold value will be same as like ED7 A11a-1a3)

Service Items Threshold Optimized

Value Comment

Voice

Call Setup Counter

GSMCallSetupFailRF Counter

Call Setup Success Rate * >98%

Call Setup Time *

MOC90% of successful

calls <5s

MTC90% of successful

calls <5s

Call completion rate * >97.5%

Call Drop Rate for continuous

calls *

2 drops per hour of voice

call or Static <=0.6%

EDGE

PDP Context Activation

Success Rate *

>98%

PDP Context Activation Time

*

<3s

FTP EDGE Downlink

Throughput according to C/I

on BCCH TRX *

> 140 kbps for C/I >20 dB

> 60 kbps for 10 dB < C/I <

20 dB

> 25 kbps for C/I < 10 dB

FTP EDGE Uplink Throughput

according to C/I on BCCH

TRX *

> 70 kbps for C/I >20 dB

> 30 kbps for 10 dB < C/I <

20 dB

> 10 kbps for C/I < 10 dB

PS Session Termination

Success Rate *

>98%

Round Trip Time

1460 Byte Ping: <2500ms ;

5 packet loss

8 Byte Ping: <800ms ; 5

packet loss

Mobility

GSMSDCCHCallDrop

GSMSDCCHAssigned

SDCCH_SETUP_BLOCKING

_RATE *

≤0.5%

SDCCH Drop Rate * ≤0.5%


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2G-3G HO Success Rate for

CS Calls

>98%

2G-3G Reselection Success

Rate for PS Calls

>95%

2G HO Success Rate for CS

Calls *

>98%

Coverage RX_ Level for 95% of samples

*

>-84 dBm for urban,

>-94 dbm for suburban

>-99 dbm for road

>-104 dbm for rural

RX_Qual (for 85% of

samples) *

0 to 4

Note:

1. According to purchased service BoQ, all sites should be Optimized (initial tuning SSV and

optimization).

2. The final optimized value to be evaluated against the above target threshold value.

3. If the optimized value doesn’t reach the threshold value, it should be justified and agreed as per the

justification (e.g. coverage, traffic model, etc.) stated in the “comment column” and accepted by ET.

4. For isolated site if there is a drive test route, optimization will be done in such a way and both SSV and

coverage optimization will be done together. The coverage will be optimized to the maximum possible

coverage/interference for the target area.

5. For isolated site if there is no drive test route, some target area around the site will be selected and

both SSV and coverage optimization will be done together. The coverage will be optimized to the

maximum possible coverage/interference for the target area.

6. The optimization report for isolated sites will be only tested and generated for the coverage test (RX_

Level and RX_Qual). For isolated sites, there is no pass criteria.

7. 2G HO Success Rate for CS Calls is only applicable for Wereda towns.

8. Considering finishing the project as per the PIP, optimization will be done for the above most important

KPIs marked with stars for Wereda Towns. In addition, one Wereda town sample will be selected per

circle to be optimized and tested for all items according to the purchased license.

9. The Wereda Town is the administration center of the Wereda and the list will be provided by ET

regional office and agreed by 2 parties.

10. Considering finishing the project as per the PIP, main cities with site number less than 5, the stationary

test is not applicable.

11. Main Road DT is focused on mobility and connectivity, hot spot stationary test is not applicable.

12. If the main road sites cross the POs, the main road DT will be performed at last PO with all the sites

and only SSV acceptance in the previous PO.


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4.2 OSS KPI (the threshold value should be same like ED-7 A16a-1a)

OSS target KPI should be according to Appendix A16a - 1a - Performance KPIs for

RAN-UTRAN-LTE - Ed7 shown as below (Average of 7 days of 2/12/2014-8/12/2014):

Name

KPIs

Comment Threshold

Day Busy

Hour

(10:00-11:00)

Night Busy

Hour

(21:00-22:00)

CS

K3014:Traffic Volume on TCH(Erl)

2G Call Setup Success Rate_SLA >98%

2G Call completion rate_SLA (>97%) >97%

2G Call Drop Rate for continuous

calls_SLA <=1%

2G SDCCH_

SETUP_BLOCKING_RATE_SLA ≤0.5%

2G SDCCH_DROP_RATE_SLA ≤0.5%

PS

2G Call Setup Success Rate - Data_SLA ≥ 97%

2G Average EDGE throughput per data

TS - DL_SLA ≥38Kbps

2G Average GPRS throughput per data

TS - DL_SLA ≥12Kbps

2G Lost connections Rate – Data_SLA ≤5%

2G PS Session Termination Success

Rate_SLA >98%

Note

1. The OSS KPIs are applicable when the counters are more than 500 in busy hour.

2. If the optimized value doesn’t reach the threshold value, it should be justified and agreed as per the

justification (e.g. coverage, traffic model, etc.) stated in the “comment column” and accepted by ET.

3. Both day busy hour and night busy hour OSS KPI will be put in the above table. The day busy hour is

used for acceptance. The night busy hour is used for optimization reference.

4. If the main road sites cross the POs, the main road OSS KPI will be performed at last PO with all the

sites and only SSV acceptance in the previous PO.


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5 Drive Test Methodology

5.1 Call Setup Success Rate

1. GSM network is in normal operation, relative parameters are well planned and optimized.

2. DT route is predetermined.

3. Set call model parameters: Destination Number = 118, Originate Mode = GSM, Call Type = Call by

Call, Setup Timeout = 30s, Call Duration = 120s, Test/Exceptional Interval = 15s, Call Start Mode = Idle

Mode, Call Mode = Infinite

5.2 Call Setup Time



3. Set call model parameters: Destination Number (call setup time MOC) =118, Destination Number

(call setup time MTC) =MTC Number, Originate Mode = GSM, Call Type = Call by Call, Setup Timeout =

30s, Call Duration = 120s, Test/Exceptional Interval = 15s, Call Start Mode = Idle Mode, Call Mode =

Infinite

5.3 Call completion rate






5.4 Call Drop Rate



3. Set call model parameters: Destination Number = 118, Originate Mode = GSM, Call Type =

Continuous Call, Setup Timeout = 30s, Test/Exceptional Interval = 15s, Call Start Mode = Idle Mode, Call

Mode = Infinite

5.5 PDP Context Activation Success Rate

1. EDGE network is in normal operation, relative parameters are well planned and optimized.


3. SIM card is subscribed to provide 256Kbps or higher download rate.

4. Mobile EDGE Class = Class 10 (up to 4 TS on DL, up to 2 TS on UL)

5. FTP Server predetermined.

6. Set call model parameters: Initiate EDGE PDP context activation (Traffic Class = Background),

Mode = FTP upload & FTP download, Remote File Size: 500k & 2Mb. Initiate EDGE PDP context


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deactivation. Test Interval = 15s.Repeat = Infinite

5.6 PDP Context Activation Time









5.7 FTP EDGE Downlink Throughput according to C/I on BCCH TRX







Download Mode = FTP, Remote File Size: 2Mb. Initiate EDGE PDP context deactivation. Test Interval =

15s.Repeat = Infinite

5.8 FTP EDGE Uplink Throughput according to C/I on BCCH TRX






6. Set call model parameters: Initiate EDGE PDP context activation (Traffic Class = Background/

Interactive Preferable). Upload Mode = FTP, Local File Size: 500kb. Initiate EDGE PDP context

deactivation. Test Interval = 15s, Repeat = Infinite

5.9 PS Session Termination Success Rate










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5.10 Round Trip Time



3. Make sure that the UE supports uplink extended TBF if the network supports this function.

4. Ping IP address predetermined.

5. Hotspots predetermined.

6. Set call model parameters: Initiate EDGE PDP context activation, Packet Size: 8 Byte & 1460 Byte,

Initiate EDGE PDP context deactivation, Test Interval = 1s, Test count = 200

5.11 SDCCH_DROP_RATE






5.12 SDCCH_SETUP_BLOCKING_RATE







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6 Drive Test Plot

6.1 Route & Target Area Information


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6.2 Short Call Best Server BCCH Plot

6.3 RxLev Coverage Plot


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6.4 RxQual Coverage Plot


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6.5 Download Throughput Plot


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6.6 Upload Throughput Plot


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7 Optimization Actions Undertaken

7.1 RF adjustment

Site ID Cell ID Azimuth Mechanical + Electrical Purpose


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7.2 Parameter optimization

BSC/R

NC Cell ID MML Parameter Name

Current

Value

Proposed

Value

Modification

Reason

7.3 Thematic Optimization

Site ID LLD Configuration Current Configuration


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8 Attachment

8.1 Engineering parameter table and RF tuning record table

Engineering parameter table(cluster11).xls

RF tuning record table(cluster11).xls

8.2 Radio parameter optimization record table

Radio parameter optimization record table(Cluster11).xls

8.3 Frequency optimization record table

NONE

8.4 Neighbor list optimization record table

NONE


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9 Certificate of Network Optimization Target Area Report

It is hereby agreed that the Target Area named below meet the specifications, the drive test and OSS

performance criteria with preconditions to be satisfied under “Additional Information”. Ethio Telecom and

Huawei, by signing this paper, confirm that the Target Area has been successfully giving service as per

main contract agreement.

Target Area Name :

Date of Operation : DD/MM/YYYY

Additional Information :

Site List:

Index Site ID Site Name


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On behalf of Huawei

On behalf of Ethio Telecom

Originator：…………………………. Approved by：…………………………..

Signature：………………………….. Signature：………………………………..

Date： ………………………….. Date： ………………………………..

north circle network optimization report of gsm new build (region xx cluster xx) v2.0-2015-4-7.pdf

Documents

drive test oss kpi

drive test methodology

network optimization

drive test kpi threshold

network topology

drive test route drawing

test protocol

target area site list