Volume 3 Number 4 (Jul. 2014)
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IJCCE 2014 Vol.3(4): 253-258 ISSN: 2010-3743
DOI: 10.7763/IJCCE.2014.V3.331

A New Seamless Handover Mechanism for IEEE 802.16e in WiMAX Networks

R. Bhakthavathsalam and Khurram J. Mohammed
Abstract—In IEEE 802.16e standard, mobility and handover are added as basic capabilities. It defines a framework providing specific methods or algorithm for handover that can be deployed in mobile stations to enable them for switching seamlessly from one base station to another. A mobile subscriber station (MSS) basically conducts hard handover operation when it moves to another base station (BS). Therefore, the MSS is not able to send or receive the data during handover process and these data should be delayed. As a result, real time packet could be dropped by handover delay. In this paper, we evaluate the performance of these handover schemes based on the metrics for delay and throughput. Then we enhance their performance by incorporating the principle of circularity. Circularity is a paradigm that allows the identification of specific groups of packets or events. This new paradigm reduces the collisions among request packets and thereby improves the performance in WiMAX networks. The evaluation and enhancement are performed through extensive simulation studies.

Index Terms—IEEE 802.16e, MAC sublayer, contention resolution, handover ranging, circularity, network simulator 2.

R. Bhakthavathsalam is with the Supercomputer Education and Research Center, Indian Institute of Science, Bangalore-560012, India (e-mail: bhaktha@serc.iisc.ernet.in). Khurram J. Mohammed is with the Ghousia College of Engineering, Ramanagaram-562159, India (e-mail: khurramashrafim@gmail.com).

Cite:R. Bhakthavathsalam and Khurram J. Mohammed, "A New Seamless Handover Mechanism for IEEE 802.16e in WiMAX Networks," International Journal of Computer and Communication Engineering vol. 3, no. 4, pp. 253-258, 2014.

General Information

ISSN: 2010-3743 (Online)
Abbreviated Title: Int. J. Comput. Commun. Eng.
Frequency: Quarterly
Editor-in-Chief: Dr. Maode Ma
Abstracting/ Indexing: INSPEC, CNKI, Google Scholar, Crossref, EBSCO, ProQuest, and Electronic Journals Library
E-mail: ijcce@iap.org
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