Huawei Gsm Easy Solutionv1.0(20120215)[1]

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HUAWEI TECHNOLOGIES CO., LTD.

HUAWEI GSM Easy O&M Solution V1.0(20120215)

Author/ Email:liuqiuyun/[email protected]: V1.0(20120215)

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GSM Easy O&M Solution Overview

Quick Troubleshooting Solution

Precise Network Optimization Solution

Simplified Routine Maintenance Solution

Roadmap and Sales Strategy

Contents


GSM O&M Challenges

60% antenna fault do not have alarm, how to identity problem quickly?80% voice fault recurrence depend on dialing test, how to isolate and locate problem quickly

Source: China mobile

Sites and O&M Staff comparison

Sites(ten thousands)O&M staff numbers

2003 2004 2005 2006 2007 2008 2009 2010

Network KPI is enhancing but user perception is declining for KPI designed for old network can not reflect service quality provided now. How to optimize network based on user perception?

Source: China mobile Sites number is increasing year by year while the O&M staff is almost the same.How to improve routine maintenance efficiency

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Trouble Shooting Network Planning Routine Maintenance

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 5

HUAWEI Solution Overview for the Challenges

Quick Trouble Shooting Solution Antenna feeder troubleshooting solution reduce the workload by 80% VSWR detection solution solve more than 95% VSWR fault in engineer phase PIM Interference detection solution reduce the detection cost by 80% Transmission troubleshooting solution find the fault automatically Voice troubleshooting solution improve the work efficiency by more than 80%

Network Planning Based on User Perception User complaint handling solution is aimed to quick response to user

complaint VIP User care solution is aimed to detect user perception fault in

advance Services geographic observation solution is aimed to display network

KPI distribution on geographic map with high precision

Routine Maintenance Efficiency Improvement Network Health Check Solution is aimed to help operators to find

and solve network risk in advance iSStar Routine Maintenance Solution is aimed to simplify routine

network operation and maintenance






Contents


Antenna Feeder Fault Has Been a Big Challenge

Main and diversity feeder &jumper fault

Jumper falling off

feeder physical fault

Crossed pair connection of antennas between cells

Reverse connection of antennas between cells

Connection fault

RF Chunnel fault

Antenna passive intermodulation interference

External interference(such as CDMA and repeater interference ,etc.

interferences

Test item Pass rateThird-order

intermodulation 20.00%

standing wave ratio 87.50%

Antenna performanceDownlink tunnel fault Uplink tunnel fault

UL&DL channel fault

Bad performance

Source: China


RF Channel Troubleshooting Solution

Less requirement on expert and instrument ,Saving the workload by up to 80%

Analyze data with tools at remote end

Generate a list of fault site and fault mode

Go to site to solve the fault according to the list

MR

Handover statistic

Engineering parameters

BTS3012 BTS3900

RXTX

① ②

③

④

Downlinktunnel fault

Downlinktunnel fault

Uplink tunnel fault

Uplink tunnel fault

Antenna fault

between cells

Antenna fault

between cells

③Connection fault between DDPU/DFPU and TRX

Connection fault between antenna and port on the top of BTS cabinet

①②

Connection fault between DDPU/DFCU and TRX

Connection fault between antenna and port on the top of BTS cabinet

Connection fault between RF units

③

①②

④

Crossed pair antenna connection between cells

Reverse antenna connection between cells

①②①②

Analyze fault at remote end based on basic data Comprehensive fault detection


Application of RF Tunnel Troubleshooting(Chengdu Mobile)Case 1:Fault Connection between RF units Case2:Reverse antenna connection between cells

Remote analyze with tools


Collect traffic measurement Collect traffic

measurement Output fault listOutput fault list Confirm onsiteConfirm onsite

Faults can be located automatically with tools at remote end and confirmed quickly on site

Cells with totally different coverage

The main reception level is 12dB greater than that of

diversity for all TRX of one RF unit which indicates that

connection fault between RF units exist



Collect handover statistic &engineering parameters

Collect handover statistic &engineering parameters

Output fault list

Output fault list

Confirm onsite Confirm onsite

Handover happened between cell A and other eight cells ,but the other

eight cell is not neighboring cell of cell A in engineering ,the antenna

feeder of the cell A may be inversely connected

Connection fault between RF units

Cell A


Intermodulation Interference Detect SolutionTraditional solution Huawei Solution

Special RF instrument

+

Onsite troubleshooting with low efficiency and high cost Difficult operation with high requirement on experience and skill to engineer

spectrum detect and analyze at remote end + solve fault on site

High efficiency with 80% cost savingEasy operation with low requirement on the skill to engineer

+

Check the result of the test

Check the result of the test

Perform online inter-modulation

test in LMT

Perform online inter-modulation

test in LMTConfirm on siteConfirm on site

expert working onsite


Application of Intermodulation Detection(Hebei Mobile)Case1 ： In one cell, the ratio of interference band 4 and 5 is more than 50% in BH, maybe it has intermodulation interference

Test result indicates that there is intermodulation interference in the cell

Perform online intermodulation test for the cell

Rectify the problem on site and confirm that the fault was cause by antenna joints aging

case2 ： Perform offline inter-modulation detection to examine antenna performance

Traditional solution, the test can only be performed by experts going to

site with instrument

Undeploy antenna

Experts go to site with special instrument

Connect instrument to the antenna feeder to perform test

Resume the antenna feeder

connection

Intermodulation product

Test result

906MHz （ IM5 ） -89dBm891.4MHz(IM7 ） -98dBm

Intermodulation product

Test result

906MHz （ IM5 ） -89.5dBm

891.4MHz （ IM 7 ） -99dBm

With remote intermodulation detection solution ,the work can be

done at remote end with only software spectrum analyzer

Output resultPerform the test at remote end


VSWR Detection Solution

Reduce the dependence on instrument and onsite workload ,Find and solve 95%problem during engineering stage

The fault can be found by alarm indicating and handled according to its severitiesLess effect on service quality

Remote high-accuracy site VSWR test hierarchical VSWR alarm mechanism

The workload of going to site is huge for VSWR fault

engineering stage

15% VSWR fault left to maintenance phase

Maintenance phase

Challenges

Solution

benefitBenefit

Alarm name and description System auto-handling

Level1 VSWR alarm ： the alarm appears when VSWR

exceeds level 1 VSWR threshold

no

Level 2 VSWR alarm: the alarm

appears when VSWR exceeds level

2 VSWR threshold

BTS disables power amplification 10 minutes

then open power amplification and check VSWR

again, repeating the operation three times, if

the alarm still exist, BTS would out of service


Transmission Troubleshooting Solution

TDM/ATM transmission: comprehensive self test to avoid connection mistake

Abis Crossed Pair DiagnosisThe system detect the fault and generate alarm automatically EI physical loopback self detect The system detect the fault and generate alarm automaticallyTDM TS Fault self detectionThe system detect the abnormal TS automatically

IP transmission: real time performance monitoring and assistant troubleshooting tools

Network quality detect The function can help operator to locate problem by bit error rate detection IP Performance Monitor(IPPM)The function checks the QoS of transmission network and the result is a basis of flow control and alarmTransmission resource measureThe function detect the usage and quality of transmission and show them as a curve in GUL

Real time performance monitoring, high efficiency troubleshooting without any impact on service


Application of Transmission Troubleshooting

Open the function of channel status monitoring , Four channels of the cell are in fault status

Look for the distribution of Abis TS, and found that TS1 on ports 0 of the site is in fault status

BSS report logic channel fault alarm when the fault exceeds the threshold of the alarm

Background: one of 64K timeslot in a BTS is abnormal , BSS blocked the timeslot and reported alarm

Engineer confirmed that the abnormal TS is caused by Dxx across equipment fault, the channel

status resume after the DXX equipment is repaired

Handing process


Voice Troubleshooting Solution

Detailed log record help engineer to locate the fault quickly

The Log records the

information for each

abnormal call including

the IMSI of the call and

RNC/TRX resource

occupied by the call.etc.

The troubleshooting efficiency is improved by more than 80% by voice quality automatic detection and log record.

RF units

Main

control board

Abis Itf

Ater Itf

Ater Itf

A Itf

BTS BM TCBSC

1End to end real-time quality detection and alarm indication

2


Application of Voice Troubleshooting Solution one- way audio occurred 446

times

Log analysis: all the one-way audio fault

happened in the 2TRX of a cell .

Rest hardware to the TRX and the fault is still

exist 。Look up the configuration :the two TRX are

allocated in the same E1,and EI expansion on

the site was done recently maybe the fault

was caused by transmission.

Engineer go to site to check the

transmission and find that the E1 was

loop backed ， the alarm resume after

the re-connection of the E 1

Real-time monitoring alarm +log assistant troubleshooting improve voice troubleshooting efficiency

1

2

3


Signaling Plane Troubleshooting Solution-FARS

Efficiency increase by 40% and cost decreased by 60%

FARS trace signaling within whole network

CNBSCBTSMS

Abis A/Gb

BSSAP signaling SCCP signaling MTP2 /MTP3 signaling

UM

RSL signalingOML signalingLAPD signaling

CS/PS signaling CBC interface signalingCS single user signalingPS single user signaling

FARS(M2000)

Trace/analysis

BSC 2BTS 1 BTS 2

Perform signaling trace inter-network element

Data reporting

M2000/FARS

1 2

BSC 1

call flowchart

MR level and quality curve

FARS analyze the signaling traced and show them in graph format

1 2






Contents


Traditional KPI Can not Reflect User Real Perception

•82% churned users comes from not satisfaction to operator’s product or service and long time to solve their complaint•The dissatisfaction from one user will transmit to other 13 users according to statistic.

Low data rate is slowLow data rate is slow

…………

voice quality is not goodvoice quality is not good

mobile phone signal is weak

mobile phone signal is weak

Network KPI is Perfect Lots of user complaints, bad user perception

Customer service hotline

RBT Download is slowRBT Download is slowPS offline ratePS offline rate

…………

PS setup success rate PS setup success rate Call setup success rateCall setup success rate

Call drop rate Call drop rate

one-way audio ,acoustic echo ,cross talk and noise.etc.

one-way audio ,acoustic echo ,cross talk and noise.etc.

How to response user complaint, locate the fault and solve the problem quickly

Congestion rate Congestion rate


Complaint Handing Solution

BSC record all call information

Analyze call history record(CHR )on Nastar to identify the cause of user complaint

Monitor VIP service quality and solve problems before user find them

User complaint

Customer service

Nastar

Network optimization

engineer

BSC(including SAU)

BTS BTS

Nastar processes CHR data and reports the data to the optimization engineer to realize fast response to the complaint and VIP care

BSC record CHR which is the data resource of complaint analysis and VIP care

NE

VIP user


Engineer find the

record of dropped call

from CHR

Application of Complaint HandlingBackground: one user make a complaint against abnormal call end happened to his mobile phone frequently

Engineer analyze the abnormal signaling

and find that the problem is caused by air

interface.

2

Engineer find the RxLevel of the call is weak

from MR combining with the fault location ,the

fault was caused by weak coverage

3

The complaints handling period is reduced by 70% and the manpower is reduced by more than 60%

Engineer adjust the antenna of the

neighboring site, the problem

disappear

41


VIP User Care Solution

Monitoring VIP service and solving problems before receiving complaints to enhance VIP satisfaction

The KPIs are displayed by VIP user or VIP user group

KPI show by graph

Register the VIP users Check the KPI report of VIPs

Naster Analyze and solve the problems

Naster get data from CHR and show the KPI changing curve trend of VIP user in GUI


Application of VIP Care Solution Background: Engineer find that the call drop rate of a VIP group increased in the passed week in routine VIP KPI analysis

The call drop rate of a VIP group is

far below the standard in the

passed week

1Analyze the call records, engineer find that

the RxLevel is weak which may be caused by

weak coverage

2Engineer Located the cells and find that

the distance between cell 9313 and 9318

is far

3The reason was confirmed by dive test, Problem

disappeared before user detect after adjusting

the angle of antenna

4

Find and Solve the problem before VIP user detecting it to ensure user satisfaction


Abundant MR information + high precision location arithmetic

Challenges Network coverage and KPI verification heavily depend on diving test while most of the information can be gotten from MR.

Traditional KPI only include the information of cell level, when problem happens, it is impossible to find the exact location with traditional KPI

parameters

SolutionDisplaying service KPI on geographic map with high precision help operators to optimize network accurately and locate fault quickly.

Geographic observation item

Network coverage •Service cell•Uplink coverage•Downlink coverage•Uplink low RxLevel with low RxQuality•Downlink low Rxlevel with low RxQuality•Uplink interference•Downlink interference•Area without dominant cell

Network traffic distribution•Voice traffic distribution •Low quality and low traffic distribution

Abnormal network event•Call drop times•Handover failure times

Area with

weak coverage

Less workload on network optimization by displaying network quality on geographic map with higher precision

Services Geographical Observation Solution


Application of Geographical Observation(Turkey VDF) Wireless environment geographical display Network KPI of user perception geographical display

High precise KPI geographic display , Less workload on diver test for network optimization and trouble shooting






Contents


Network Health Check Solution

Check network regularly to improve the network quality and customer satisfaction by proactive maintenance ！

Collect data

Configuration check

Hardware analysis

Network KPI check

Software analysis

Network analysis Generation report for the entire network

Analyze the report and solve problems

Proactive maintenance Find the fault for the network in advance through routine network health care and solve problems before customer complaints


iSStar Routine Maintenance Solution

iSStarplatform

Adjust channel type

automatically

Check board status

regularly

Control user access level

automatically……

Daily maintenance application

Execute routine work automatically and regularly through scripts to improve daily maintenance efficiency

iSStar Server

Mediation

PM/CM/FMDBNE1 NE1 …

M2000 Server

Intelligent Script Star(iSStar)server ,with it

engineers can deploy scripts for applied services and the

scripts can finish routine maintenance work

automatically

Application case

Isstar:A second –deployment platform of Huawei OSS, it is an integrated development environment for script program development, debugging and execution based on the high level script language.Support to analyze network configuration, traffic statics, alarms and other information automatically.Support to generate reports automatically.Support to online modify configuration automatic ally.


A interface CIC checkA interface signaling link checkGBLINK_NSVL checkBSC board state checkCPU load checkBTS state checkPDCH channel state check

Application of iSStar application—Automatic Routine Maintenance

Beijing mobile BSS maintenance criterion asks maintenance engineers check equipments 2 times everyday. The criterion has 7 items which were done manually. This work cost half an hour for each BSC every time.

iSStar SolutionMake iSStar program, The program run automatically, check items by BSC and Output check result, Engineers check result and solve problems.Engineer only need to check the result and lots of time can be solved if there are many BSCs.

Background






Contents


Solution Roadmap and Sales Strategy

Region SolutionRoadmap

sales strategy9.0 12.0 R13.0

Troubleshooting

RF channel troubleshooting solution √ √ √ professional serviceVSWR detection solution √ √ √ basic features

PIM Interference detection solution √ √ ** license and professional service

Transmission troubleshooting solution √ √ √ IPPM license, other features are basicVoice troubleshooting solution √ √ basic featuresVoice troubleshooting solution(FARS) √ √ √ basic featuresFARS √ √ √ basic features. call review feature license

Network planning based on

user perception

User complaint handling solution √ √ √feature license and Nastar tool fee

VIP User care solution √ √ √

Services geographic observation solution √ √ √ professional service

routian maintance

Network Health Check Solution √ √ √ professional serviceiSStar Routine Maintenance Solution √ √ √ iSStar platform license

** Enhancement

Thank youwww.huawei.com

Copyright©2011 Huawei Technologies Co., Ltd. All Rights Reserved.The information in this document may contain predictive statements including, without limitation, statements regarding the future financial and operating results, future product portfolio, new technology, etc. There are a number of factors that could cause actual results and developments to differ materially from those expressed or implied in the predictive statements. Therefore, such information is provided for reference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the information at any time without notice.

Documents

Huawei Gsm Easy Solutionv1.0(20120215)[1]