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A new handoff management system for heterogeneous wireless access networks
Author(s) -
Mojtaba Matinkhah S.,
Khorsandi Siavash,
Yarahmadian Shantia
Publication year - 2014
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.2393
Subject(s) - computer science , handover , computer network , base station , heterogeneous network , selection (genetic algorithm) , wireless network , analytic hierarchy process , selection algorithm , access network , heterogeneous wireless network , wireless , radio access technology , bandwidth (computing) , telecommunications , user equipment , operations research , artificial intelligence , engineering
SUMMARY In heterogeneous wireless access networks, each mobile terminal may frequently need to change its base station (BS); this change is called a ‘handoff’. BSs have static parameters, which are related to their radio access technologies (RATs); however, they also contain dynamic parameters such as load and signal quality. Therefore, the problem of handoff decision includes two subproblems of RAT selection and BS selection. In this paper, first a ‘heterogeneous handoff management system’ for gathering all different required parameters is proposed. Second, a RAT Selection algorithm based on analytic hierarchy process and a BS Selection algorithm based on data envelopment analysis are designed. Finally, by means of ‘weight restriction’ technique, we develop a method for studying the impact of RAT Selection parameters on the performance of the network. Simulation results indicate that RAT Selection parameters have significant impact on the bandwidth utilization, energy consumption and the whole satisfaction of the users in heterogeneous wireless access networks.Copyright © 2012 John Wiley & Sons, Ltd.