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Adaptive Techniques for Elimination of Redundant Handovers in Femtocells

Authors:
Zdenek Becvar
Pavel Mach

Keywords: femtocell; handover; Handover Delay Timer; windowing; LTE-A

Abstract:
Dense deployment of femtocells in mobile wireless networks can significantly increase the amount of handover initiations. This paper analyzes new approach to elimination of redundant handovers. The innovative way dynamically updates current value of techniques commonly used for elimination of redundant handovers. The goal is to investigate the efficiency of two handover elimination techniques, i.e., windowing and handover delay timer. Both techniques are modified to enable adaptation of their parameter according to the channel quality related to the users' position in the cell. Furthermore, the impact of proposed modifications on the user’s throughput is examined. All simulations are performed in scenario of 4G networks with femtocells. The results show no benefit of adaptive windowing comparing to conventional one. However, the performance improvement is achieved by adaptation of the handover delay timer.

Pages: 230 to 234

Copyright: Copyright (c) IARIA, 2011

Publication date: January 23, 2011

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-113-7

Location: St. Maarten, The Netherlands Antilles

Dates: from January 23, 2011 to January 28, 2011