UMTS CS Call Drop Analysis Guide Book

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Chunl1
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UMTS CS Call Drop Analysis Guide Book

Postby Chunl1 » 16 Sep 2017, 12:51

This document is compiled to guide the network optimization
engineers to solve the call drop problem, to reduce the call drop
rate, and to improve the quality of the network. It also
introduces ways to evaluate, test, analyze and solve the call
drop problem. In addition, it also includes some typical cases. In
the actual network optimization activities, handover and call
drop are strongly related. In most cases, handover failure would
lead to call drops. For this kind of call drops, you may refer to
the guidebook for call drops caused by handover. This document
mainly focuses on call drops which are not caused by handover
failures.

Chapter 1.........................................................................1
Introduction....................................................................1
Chapter 2.........................................................................3
Definition.........................................................................3
Definition of Call Drop from Drive Test Aspect .....................3
Definition of Call Drop at OMC Side....................................3
Chapter 3.........................................................................5
Call Drop Analysis............................................................5
Call Drop Reasons............................................................5
Call Drops Caused by Poor Coverage.......................................5
Call Drop Caused by Neighbor Cells.........................................6
Call Drop Caused by Interference ...........................................7
Call Failure Caused by Two Cells Using the Same PSC................8
Call Drops Caused by Engineering Causes .............................. 10
Call Drops Caused by 2G/3G Interoperability.......................... 12
Call Drops Caused by the System......................................... 13
Analyzing Call Drops by DT ............................................. 13
Analyzing Call Drops by Traffic Statistics........................... 15
Procedure of KPI Analysis.................................................... 16
Basic Methods to Analyze KPIs ............................................. 17
KPI Analysis Tools.............................................................. 18
Radio Parameters Involved During Optimization ................ 20
Radio Parameters Related with CS Call Drops ......................... 20
Timer and Counter Related with Call Drop.............................. 22
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sapidin123
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Re: UMTS CS Call Drop Analysis Guide Book

Postby sapidin123 » 18 Sep 2017, 11:48

Thankyou so much.



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pemula
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Re: UMTS CS Call Drop Analysis Guide Book

Postby pemula » 10 Oct 2017, 16:48

Thanks Sir




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