Huawei Gsm Easy Solutionv1.0(20120215)[1]
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Transcript of 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)
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 2
Please consider to delete this slide before you
present
GSM Easy O&M Solution Overview
Quick Troubleshooting Solution
Precise Network Optimization Solution
Simplified Routine Maintenance Solution
Roadmap and Sales Strategy
Contents
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 4
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
Add Your Title
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
GSM Easy O&M Solution Overview
Quick Troubleshooting Solution
Precise Network Optimization Solution
Simplified Routine Maintenance Solution
Roadmap and Sales Strategy
Contents
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 7
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 8
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 9
Application of RF Tunnel Troubleshooting(Chengdu Mobile)Case 1:Fault Connection between RF units Case2:Reverse antenna connection between cells
Remote analyze with tools
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
Remote analyze with tools
Remote analyze with tools
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 10
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 11
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 12
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 13
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 14
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 15
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 16
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 17
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
GSM Easy O&M Solution Overview
Quick Troubleshooting Solution
Precise Network Optimization Solution
Simplified Routine Maintenance Solution
Roadmap and Sales Strategy
Contents
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 19
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 20
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 21
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 22
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 23
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 24
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 25
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
GSM Easy O&M Solution Overview
Quick Troubleshooting Solution
Precise Network Optimization Solution
Simplified Routine Maintenance Solution
Roadmap and Sales Strategy
Contents
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 27
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
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 28
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.
HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 29
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
GSM Easy O&M Solution Overview
Quick Troubleshooting Solution
Precise Network Optimization Solution
Simplified Routine Maintenance Solution
Roadmap and Sales Strategy
Contents
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 31
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.