Enhanced Seamless Handover Algorithm for WiMAX and LTE Roaming

Advances in Electrical and Computer Engineering. 2014;14(4):9-14 DOI 10.4316/AECE.2014.04002

 

Journal Homepage

Journal Title: Advances in Electrical and Computer Engineering

ISSN: 1582-7445 (Print); 1844-7600 (Online)

Publisher: Stefan cel Mare University of Suceava

LCC Subject Category: Technology: Electrical engineering. Electronics. Nuclear engineering: Electronics: Computer engineering. Computer hardware

Country of publisher: Romania

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS

HINDIA, M. N.
REZA, A. W.
NOORDIN, K. A.
KAUSAR, A. S. M. Z.

EDITORIAL INFORMATION

Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 20 weeks

 

Abstract | Full Text

With the ever evolving mobile communication technology, achieving a high quality seamless mobility access across mobile networks is the present challenge to research and development engineers. Existing algorithms are used to make handover while a mobile station is roaming between cells. Such algorithms have some handover instability due to method of making handover decision. This paper proposes an enhanced handover algorithm that substantially reduces the handover redundancy in vertical and horizontal handovers. Also, it enables users to select the most appropriate target network technology based on their preferences even in the worst case where the mobile station roams between cell boundaries, and has high ability to have efficient performance in the critical area full of interferences. The proposed algorithm uses additional quality of service criteria, such as cost, delay, available bandwidth and network condition with two handover thresholds to achieve a better seamless handover process. After developing and testing this algorithm, the simulation results show a major reduction in the redundant handover, so high accuracy of horizontal and vertical handovers obtained. Moreover, the signal strength is kept at a level higher than the threshold during the whole simulation period, while maintaining low delay and connection cost compared to other two algorithms in both scenarios.