DEVELOPMENT OF A MODIFIED HANDOVER DECISION ALGORITHM IN LONG TERM EVOLUTION ADVANCED NETWORK USING MOBILITY VECTOR PREDICTION TECHNIQUE
No Thumbnail Available
Date
2021-09-28
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ahmadu Bello University Zaria
Abstract
This research is aimed at addressing unnecessary handovers which drops
network quality. And also, to improve network throughput by considering signal to interference
plus noise ratio (SINR). This SINR was to mitigate neighbour cell interference. An angle of
movement of 300 was used to create a shortened candidate list of small cells (SCs) with high
signal strength. This helps in reducing delay in searching for target small cells (SCs) for
handover. And mobility vector prediction technique was incorporated so that low to medium
speed user equipment (UEs) access the same small cell (SC). This helps in reducing the
scanning for different target SCs and accurately execute handover. This research was carried
out using LTE system level model in MATLAB and the performance of the improved
algorithm was compared with the existing work. Probability of Handover was reduced by
33.33%, Probability of Unnecessary handover was also reduced by 44.44%. Network
throughput was improved by 40%. To further improve on the strength of the developed
algorithm; Radio link failure probability was reduced by 46.37% when compared with the
conventional scheme. The results obtained show tremendous improvement in UE call quality.