ANALYSIS AND OPTIMISATION OF INTER CELL HANDOVER DYNAMICS IN A GSM NETWORK
ANALYSIS AND OPTIMISATION OF INTER CELL HANDOVER DYNAMICS IN A GSM NETWORK
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Date
2014-08
Authors
ABEDNEGO, ANDIRYA GALADIMA
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Abstract
Efficient Handover mechanism in a GSM network is one of the parameters critical to GSM
network service quality (QoS) and customer satisfaction. Handover is the process that transfers
an ongoing call from one cell to another as the users move through the coverage areas of the
cellular systems. This research focuses on analyzing and optimizing intercell handover dynamics
in Airtel Network in Kano. A three months call record sample data was used. Several cells in the
Airtel Network in Kano were investigated by profiling and analysing their performance using
standard mathematical relationships of Handover success rate, Call setup success rate, Blocking
probability, Call drop rate which are relevant Key Performance Indicators. Data was obtained in
Microsoft Excel format. Performance evaluation was carried out using Nigerian Communication
Commission (NCC) QoS standard for Macrocell as benchmark. The evaluation revealed that
seventy two percent (72%) of cells considered performed below NCC targets for Call Setup
Success Rate (CSSR), sixty four (64%) failed to achieve NCC targets for Handover Success
Rate (HSR) and sixty four percent (64%) failed to achieve Standalone Dedicated Control
Channel blocking rates targets, twenty one percent (21%) failed to achieve congestion targets.
Average call drop rate per cell was predicted to be six percent (6%). An optimal solution was
provided using dynamic cutoff priority channel allocation scheme, this improves performance of
handover dynamics when simulated. An object oriented simulation technique was employed
using a JAVA variant NETBEANS 6.1 because of its moderate system resource requirement,
fast and responsive user interface. The result showed that handover failure rate was reduced by
an average of Ninety percent (90%) for varying loads. System validation was achieved by
comparing the real and simulated load characteristics which have similarities. A correlation
coefficient was calculated using MATLAB to be 0.9122
Description
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES,
AHMADU BELLO UNIVERSITY, ZARIA
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD
OF A
MASTERS DEGREE IN ELECTRICAL ENGINEERING
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING,
FACULTY OF ENGINEERING,
AHMADU BELLO UNIVERSITY, ZARIA
NIGERIA
AUGUST, 2014
Keywords
OPTIMISATION,, NTER CELL,, DYNAMICS,, GSM NETWORK