tems layer3 messages

5/26/2018 Tems Layer3 Messages

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Asif Haider

Habib Awan


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OPTIMIZATION

Optimization is intended to provide the

best network quality using available

resources as efficiently as possible


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INTRODUCTION TO TEMS

Drive testing is the most common and

maybe the best way to analyze Network

performance.

Drive testing is basically recording

measurement data which can also be

analyzed afterwards.

It gives idea about whats happening with

a subscriber point of view.


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CONTENTS

The information provided by TEMS is displayed

in status windows. This information includes

cell identity, base station identity code, BCCH

carrier ARFCN, mobile country code, mobilenetwork code and the location area code of the

serving cell.

There is also information about RxLev, BSIC

and ARFCN for up to six neighboring cells;


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CONTENTS

channel number(s), timeslot number, channel typehopping channel indication, mobile allocation index offsetand hopping sequence

RxLev, RxQual, FER, DTX down link, TEMS Speech

Quality Index (SQI), timing advance (TA), TX Power,radio link timeout counter and C/A

parameters for the radio environment.

The signal strength, RxQual, C/A, TA, TX Power, TEMS

SQI and FER of the serving cell and signal strength fortwo of the neighboring cells can also be displayedgraphically in a window.


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USING SOFTWARE

Tailored settings

Default tabs

Basic windows Mapsgst

Recording properties

Exporting log files Report generation


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ANALYSIS OF LOG FILES

Analysis is the most important part. Lets

look at some of the cases.

Dropped call - Nbr not defined

Dropped callRL Timer expires

HO Failure


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Lack of Dominant Server

Signals of more than one cell can be

reaching a spot with low level causing ping

pong handovers. This might happen

because the MS is located on the cellborders and there is no any best server to

keep the call.


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Drop Call due to Bad Coverage

Call is dropped because of poor coverage.

The signal level goes down below the

minimum signal level that system could

carry on


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Bad Quality due to Signal

Strength

FER is Bad

FER is good implies no obviuos

interference in the area.


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LAYER 3 MESSAGES


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Layer 3 Messages

SYS INFO

Measurement Reports

Sync Messages

Paging Messages Handover

Call Setup

etc


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IDLE

DEDIC


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Measurement Reports


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SYNC CHANNEL INFO


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Paging Request Message


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QUESTIONS

REFERENCES

TEMS Log File Analysis

ARI-Nortel

Nokia BSS parameters

tems layer3 messages

Documents