0 Introduction to UMTS Radio KPI 3G network planning introduce www.huawei.com Huawei Northwest Africa Region RNP Solution Manage: William.chen [email protected]HUAWEI TECHNOLOGIES CO., LTD. reated with pdfFactory Pro trial version www.pdffactory.com
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Introduction to UMTS Radio KPI 3G network planning introduce
www.huawei.com
Huawei Northwest Africa Region RNP Solution Manage: William.chen [email protected] HUAWEI TECHNOLOGIES CO., LTD.
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Agenda
UMTS Radio KPI overview 3G Network Optimization Case Study of KPI Optimization
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3G KPIs Principle: S.M.A.R.T
the KPI has clear and complete definition and Specific formula, include check point and procedure. KPIs are measurable by given condition, Measurable
measurement equipment and procedure. all the KPIs should be reachable, it is refer to the Attainable
commercial network.
Relevant the KPI can show the subscriber experience
Time-bound the KPI target should be on the base of time-bound
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3G KPIs : Specific
Complete KPI definition include the formula combine with the check point or procedure.
The example: RRC Connection Successful Rate
formula RRCConnect ionSuccess
service RRCS_SR = ×100% Service RRCConnect ionAttempt service
Check point
The number of “RRC Connection Attempt” is A1 or A2?
A2 represent the effective number of “RRC Connection Attempt”.
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3G KPIs : Measurable - Drive Test
Driver test route is based on Field Test -> Drive Test cluster, it is involved about 20
Evaluate the overall network sites in one cluster usually. performance, usually on the network pre-launch phase and initial stage of commercial launch.
Test platform Multiple test model UEs can perform different tests.
Data analysis Probe & Assistant is used
for analyzing test data
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3G KPIs : Measurable - Stationary test
System KPI is suggested to be Field Test ->stationary Test test by stationary:
Evaluate the system / equipment performance. Throughput KPI
Delay KPI
Quality KPI Core Network
Stationary test condition is fixed, NodeB and usually used in indoor test
scenario.
RNC NodeB Radio Network KPI test is
suggested to be test by drive test System performance Radio Network performance Call drop rate
Equipment ability Handover successful rate Radio network Transmission planning
Network construct Special environment …. condition
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3G KPIs : Measurable - Statistic test
Statistic Test Nastar server
Monitoring & analysis center
Recommended for security Essential Optimization team
OM system
Pre-Condition for Statistic Test Subscriber care center
There must be enough statistic sample, that Terminal: ordinary PC or laptop, no distance mean network traffic should be reach high limitation level. Local networks Any corresponding dept.
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Huawei KPI test platform comprehensive analysis of the iManagerTM M2000 performance, configuration, alarm obtaining test data
GENEX Nastar 3G
sharing of analysis results Node B
RNC GENEX Probe
GENEX Assistant AGILENT 3G Node B QUALCOMM HLR/AC
multiple test data HUAWEI RNC
Node B
RNS PSTN GENEX Probe
MSC/SSP/ PLMN WCDMA wireless test data ISDN VLR Node B
RNC GMSC/SSP
CN GENEX U- Node B
Net Node B RNS
network pre-planning/planning
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3G KPIs: Relevant Examples of User Experience (QoE)
completion of a End-to-end response The voice and video download file is fast is Clare
Voice, Video Phone, MMS, WAP, Email, FTP, HTTP… Service Performance
Radio Network KPI AMR12.2, CS64k,PS64k/128k/384k, HSDPA/HSUPA
cause 59.45% 10.02% 7.29% 4.56% 0.68% 0.68% 3% 2.28% 11.94%
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3G KPIs: Attainable 3G KPI is output of combination with investment include technology, HR, cost, competition strategy etc. Cost
Huawei KPI comply principle: Huawei will be responsibility for every complied KPI; le Cooperate with Mobilis to work out a Competitive KPI; t Use the experience from other commercial network;
Technical AttainableCommon target for Mobilis and Huawei
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3G KPIs: Time-bound Mature Network
10 90
80 Drive Test KPIs 70 60
50 Ongoing Optimization 40 30 Stationary test KPIs 20 10
Number of Sites Number of Sites Network Statistics
Network Statistics Commercial Launch Benchmark test Nastar
Probe & Assistant Probe & Assistant
Pre-Launch Probe & Assistant KPI Acceptance
Drive Test KPIs Stationary test KPIs
Network construct Site verification
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Recommend test methodology Test Methodology Pre-launch Acceptance On-going Optimization RRC connection success rate Drive Test -
Call setup success rate Drive Test Statistic Test
PDP activation success rate Drive Test Statistic Test
CS Call drop rate Drive Test Statistic Test
PS Call drop rate Drive Test Statistic Test
CS Call complete rate - Statistic Test
PS Call Complete rate - Statistic Test
HSPA Call drop rate Stationary Stationary
R99 PS Throughput Stationary Stationary
HSPA Throughput Stationary Stationary
Soft handover success rate Drive Test Statistic Test
Inter-RAT handover success Drive Test Statistic Test rate
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Contents
• UMTS Radio KPI overview •3G Radio Network Optimization • Case Study of KPI Optimization
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Optimization throughout Life Cycle
•RF adjustment Drop call
•Para. adjustment Congestion •Maintenance and upgrade
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Contents
• UMTS Radio KPI overview •3G Radio Network Optimization • Case Study of KPI Optimization
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Case study from commercial projects
• Example of Accessibility KPI analysis • Example of Call Drop KPI issue & solution • Example of Throughput KPI issue analysis
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Example of accessibility KPIs issue
Trouble-shooting of RRC setup and RAB assignment Breakdown of CS RAB failure (Counters) problems:
VS.RAB.FailEstCS.I VS.RAB.FailEstabCS. VS.RAB.FailEstPS. • STEP1: Identify the counter with the UB.Band Other.Cell RIPFail
highest number
• STEP2: Identify the Top 10 cells with Breakdown of CS RRC failure (Counters) the same problem
VS.RRC.Rej.R VS.RRC.Rej.Cod VS.RRC.Rej.UL.C RRC.FailConnEstab. Definition of Counters L.Fail e.Cong E.Cong NoReply VS.RAB.FailEstPs.IUB.Band: The number of RABs unsuccessfully established in a cell due to IUB resource congestion causes. • VS.RAB.FailEstabCS.Other.Cell: • VS.RRC.Rej.UL.CE.Cong: RRC
Pre-admission control module reports setup failure due to lack of UL CE a resource congestion. resources
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Analysis
The “worst” sites (cells) that have been found to have both IUB and CE congestion issues:
0109TO (cell id 578/579/580) 0111TO (3882/3883/3884) 0070TO (18641/18642/18643)
NodeB UL CE Occupation Rate Name
2007-02-19 2007-02-20 2007-02-21 2007-02-22
0070TO 120.83% 132.29% 132.29% 171.88%
0109TO 142.71% 175.00% 175.00% 180.21%
0111TO 158.33% 132.29% 132.29% 148.96%
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Suggested solution A comparative analysis shows that, if excluding the problematic sites, the KPI would improve substantially, say, AMR RAB assignment success rate from 97.79% to 98.09%: