Nastar Introduction

Security Level: Internal

Nastar GSM & UMTS Main Slide

www.huawei.com

HUAWEI TECHNOLOGIES CO., LTD.

Huawei Confidential

Contents

ChallengesNastar Solution

Global Application


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Low Efficiency/Accuracy on RF OptimizationMissing Neighbor Coverage Problems Network Interference

Out of Service

Call drop

Access failure

Noise

Low data rate

How to improve the optimization efficiency?

How to improve the accuracy? ?


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Good Network KPI Good User ExperienceTraditional Network KPI Monitoring(Operator U O&M Center 09/10/26-09/11/30)99.00% 98.50% 98.00% 97.50% 97.00% 96.50% 96.00% 95.50%2009-10-26 2009-10-31 2009-11-5 2009-11-10 2009-11-15 2009-11-20 2009-11-25 2009-11-30

User Complaints Monitoring(Operator U Customer Service Center 09/10/26-09/11/30)0.260% 0.240%1050 850 650 450 250 502009-10-26 - 2009-11-04 2009-11-05 - 2009-11-14 2009-11-15 - 2009-11-24 2009-11-25 - 2009-12-04

220 200 180 160 140 120 100 80 60

0.220% 0.200% 0.180% 0.160% 0.140% 0.120% 0.100%

Accessbility Related Complaint Integrity Related Complaint

Retainablity Related Complaint

Call Setup Success Rate

HQI

Call Drop Rate

How to improve the user experience?

How to care the VIP users actively? ?


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Slow Response to User ComplaintTraditional Optimization User Complaint-> Spend long time on DT-> Dissatisfaction and Migration

10:00 am

3:00 pm

4:00 pm

5:00 pm

How to improve the user satisfaction?

How to lower the optimization

difficulty? ?


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Contents

Challenges

Nastar SolutionGlobal Application


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Nastar Solution

Coverage Uplink interference Neighboring CellGSM Frequency

User Complaint Cell Performance Active VIP CareUMTS Pilot Pollution


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Centralized Optimization

BTS

BSC

GSM

Intranet

M2000IntranetNodeB

Client

UMTS

RNC

Intranet

LTE Multi-RAT Access

M2000

Nastar

Multi-M2000 Access

Multi-Client Access


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Complete Optimization ProcedureSAU 3. Pre-process task-related data

8. Export .xml file and import to M2000

2. Start data collection

1. E2E task 4. Return data

RNC

iManager M2000

Nastar

5. Analysis task Test Cell 6. Browse the result 7. Expert analysis


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Comprehensive Coverage Analysis

MR MR MR

Nastar

Single Indicator Analysis

Directly displays coverage status Baded on MR data Through RxLev/RxQual/TA/MS Power/BTS Power, analyze GSM coverage status Through RSCP/EcNo/TP, analyze UMTS coverage status Comprehensive, Accurate, High efficiency, Low costWeak Coverage

Over Coverage

Two Indicators combination analysis

Narmal

Locate the coverage problem


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UMTS Pilot Pollution Analysis

Polluted cell ->Polluter cell

Polluter cell ->Polluted cell


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Intelligent Neighboring Cell Analysis Overview Neighboring Cells Give the feasible suggestions in the Neighboring Cell table Directly display on the chart and GIS CM E

Nastar011000100100101010110

UMTS

GSM

GSM

GSM Neighboring Cell / UMTS Neighboring Cell 2G/3G Neighboring CellPage 12


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Neighboring Cell Analysis Principleoverall score

LegendUndefined Missing Defined Redundant

Missing area Redundant area

recommended number of neighboring cells

recommended priority

The overall score of a neighboring cell is calculated by Ec/Io and the appearance times of the neighboring cell (Y axis) Neighboring cell is sorted in descending order of the overall score (X axis) Missing neighboring cell: recommended priority recommended number of neighboring cellsHuawei Confidential Page 13


Accurate GSM Frequency AnalysisICDM: Co-frequency ICDMMR MR MR

Adj-frequency ICDM

Nastar

Frequency Table Whether to meet the spacing rules Based on the MR data, ICDM (inter cell dependency matrix) is calculated, and is applied in frequency optimization. Interference to the VIP cells

Interference Chart:Directly display interference of each frequency on the histogram and line chart

Accurate, High efficiency, Low cost


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Remote Uplink InterferenceTraditional MethodManual test site by site The time and the type of interference could not be identified

Analysis by Nastar

Remote analysis is based on RTWP data The time and the type of interference are identified according to RTWP trend chart and main-diversity difference chart

Nastar

Accurate, Low cost, Low difficultyPage 15


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Active VIP Care Based on Experience Evaluate the performance of VIP users or VIP groups. Locate and solve the VIP performance

problems. Identify the VIP cells where the VIP users or VIP groups often reside.KPI TypeNetwork (UMTS) CS

Main KPIaccess success rate, handover success rate, access delay access success rate, call drop rate, access delay, SQI (UMTS) , One-Way Audio Rate (GSM), handover success rate,

VIP User

VIP Group

PS (UMTS)

access success rate, call drop rate, access delay, average negotiated final rate BLERNumber of accessesNumber of abnormal accesses, Number of abnormal releases, Number of service exception best cell accesses

Active Cell


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Cell Performance Analysis

Analyze Top N exceptional causes Analyze Top N exceptional subscribers Analyze Top N exceptional cells


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Quick Response to User Complaint Analysis

10:00 am

10:30 am

11:00 am

Cause types Normal Access failure Handover failure Call drop Other exceptions

Call record

Signaling before release

Call information Subscriber Access/release CS service PS service Handover


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Contents

Challenges

Nastar Solution

Global Application


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Nastar Optimization Case in BruneiBackground: Brunei is covered with dense vegetation and has a large population, which results in great difficulty in radio coverage. The investment is limited. The number of sites is insufficient. With poor coverage, the network also contains a great number of missing neighboring cells. The call drop rate ranges from 2% to 3%, which is quite high. The operators in Brunei have little wireless network operation experience. They are also lack of operation and maintenance engineers.

After the Nastar is used: The configuration of co-channel frequency neighboring cells is checked to one hundred percent. Therefore, the problem of missing neighboring cell configuration solved. The problem of high call drop rate is solved while the coverage rate and coverage quality are ensured. All the KPIs reach the requirements. The entire optimization requires three engineers working a day. Compared with the traditional optimization method, the efficiency is improved 20 times.


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Thank youwww.huawei.comCopyright2009 Huawei Technologies Co., Ltd. All Rights Reserved. The information contained in this document is for reference purpose only, and is subject to change or withdrawal according to specific customer requirements and conditions.


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Nastar Introduction

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