3G Sample Cluster DT Report

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Title 3G Cluster Drive Test Report Date xx/xx/xxxx

Signature

Prepared by Checked by(PULSE) Approved by(Operator)

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Table of Contents 1. Introduction ........................................................................................................................................................ 3

2. Cluster Introduction ............................................................................................................................................ 4

3. DT KPI Summary .................................................................................................................................................. 5

4. DT Performance Analysis ..................................................................................................................................... 6

4.1. RSCP Performance Analysis.......................................................................................................................... 6

4.2. Ec/No Performance Analysis ........................................................................................................................ 7

4.3. Best Server Plot (UARFCN XXXX) .................................................................................................................. 8

4.4. Pilot Pollution .............................................................................................................................................. 9

4.5. Speech Quality (SQI-MOS) Analysis ............................................................................................................ 10

4.6. Events........................................................................................................................................................ 11

4.7. HSDPA Application Throughput.................................................................................................................. 12

4.8. BLER variation............................................................................................................................................ 13

4.9. HSDPA Events ............................................................................................................................................ 14

5. Conclusion ........................................................................................................................................................ 15

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1. Introduction

This report shows how the 3G base stations serve in real along with the performance analysis.

Criteria of Drive Test

A drive test system is set up to evaluate the statistical call data. Drive test will be performed along the major roads and the special route where the customer requests also it shall be terminated at the point of RSCP -110 dBm is detected. Events should be included in drive test plots.

• 3G Scanning or Idle mode (Based on the request) • 3G Only dedicated voice call • Dual mode short voice call • HSDPA data session

Drive test and Analysis tools

• Ascom TEMS Investigation 13.1 • Actix Analyzer 4.05 • Ascom TEMS Discovery 3.1.2 • MapInfo 11 • Google Earth

Test Equipment

Items Description Laptop HP probook GPS Receiver Gamin 3G Phones Sony Ericsson W995 HSPA Data device Sony Ericsson W995 Scanner Sony Ericsson W995 AC/DC Power Equipment Standard 350W Inverter

Test Methods and Test Items

Categories Test Item Evaluation Object

Idle Mode

RSCP Cluster Ec/No Cluster Pilot pollution Cluster Reselection issues Cluster

Voice Long Call

RSCP Cluster Ec/No Cluster Block Calls, Drop Calls Cluster Coverage, Quality patches Cluster Handover issues Cluster

Voice short Call Inter frequency HO failure Cluster iRAT Handover Cluster iRAT reselection Cluster

Data Calls App. DL Throughput Cluster

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2. Cluster Introduction

NodeB Name

NodeB ID Cell ID UARFCN PSC PCPICH

Power Alarms Remarks

Cluster Sites Location

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3. DT KPI Summary

Key Performance Indicator KPI Remark Accessibility Voice Call Blocks

Retain ability Voice call drops Data call drops

Mobility Handover failures iRAT HO failures

HSDPA Average DL Throughput (kbps)

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4. DT Performance Analysis

4.1.RSCP Performance Analysis

Active Set (0) CPICH RSCP variation

Analysis & Recommendations

Point 1:

The possible reasons for the RSCP reduction will be analyzed with serving cell’s parameter configurations (PCPICH power, HO threshold, Cell Offset etc.), physically measured TILT, Azimuth along with the Neighbors, Monitored, Detected set’s TEMS measurement results. And based on the analysis the recommendations will be given to improve the RSCP in the area.

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4.2.Ec/No Performance Analysis

Active Set (0) CPICH Ec/No variation


Point 1:

The possible reasons for the poor quality of the network will be analyzed from the TEMS measurements for the SAN group including the MN & Possible over shoots. Also the parameter configurations such as Code allocations will be checked. Based on the analysis the recommendations will be given to improve the Ec/No in the affected area.

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4.3.Best Server Plot (UARFCN XXXX)

Active Set (0) SC


Point 1:

The possible reasons for the issues including serving cell’s physical TILT, Azimuth & parameter configurations (PCPICH Power, Cell Radius, etc) and based on the analysis the recommendations will be given to enhance the serving cell’s range & to rectify the over shootings

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4.4.Pilot Pollution

Pilot Pollution


Point 1:

The possible reasons for the pilot pollution will be analyzed along with physically measured TILT, Azimuth and the parameter configurations (PCPICH power, Cell Radius) and based on the analysis the recommendations will be given to make a primary server in the area.

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4.5.Speech Quality (SQI-MOS) Analysis

SQI – MOS variation


Point 1:

The possible reasons will be analyzed using the TEMS measurements and with the above mention recommendations this issue will be rectified.

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4.6.Events

CS-AMR Call events


Here the following events will be analyzed for their root causes and the recommendations will be given to overcome these issues

a) Blocked Calls b) Dropped Calls c) Handover failures (intra & inter frequencies) d) iRAT Handover failures e) Reselection issues

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4.7.HSDPA Application Throughput

HSDPA Application Throughput


Point 1:

The possible reasons for the lower throughput will be analyzed including the serving cell’s measurement reports from TEMS and the RNC parameter configurations (HS-PDSCH Code allocation, Transmission bandwidth, HSDPA power allocation, etc) and based on the analysis the recommendations will be given to improve the throughput.

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4.8.BLER variation

BLER variation


Point 1:

The possible reasons for the BLER degradation will be analyzed with the TEMS measurements and with the above mentioned recommendations this issue will be rectified.

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4.9.HSDPA Events

HSDPA Events


Here the following events will be analyzed for their root cause and the recommendations will be given to overcome these issues

a) Blocked Service b) Dropped Service c) PDP context activation failure d) Handover failures (intra & inter frequencies)

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5. Conclusion

The report shows the clear picture of the 3G network performance according to the cluster Drive Test carried out.

The above mentioned bad patches and the events were thoroughly analyzed with the drive test logs, OSS KPI and the RNC parameter configurations and the recommendations have been made.

Once you approved the recommendations we will do the necessary modifications and then the DT will be carried out to show the network performance has improved.

Documents

3G Sample Cluster DT Report