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(to be completed)

 


ThinkMind // International Journal On Advances in Networks and Services, volume 7, numbers 1 and 2, 2014 // View article netser_v7_n12_2014_10


Enhanced Adaptive Traffic Dependent Handover Decision System for Wireless Mobile Networks

Authors:
Thanachai Thumthawatworn
Anjum Pervez
Pratit Santiprabhob

Keywords: fuzzy logic; handover; traffic dependent; QoS aggregation; wireless mobile

Abstract:
Integrated network architectures have the potential to provide ubiquitous and seamless services over wide areas of mobility, with adequate quality of service and favourable price. To fully exploit such architectures (heterogeneous networking environments) multiple handovers often become necessary. Furthermore, in view of the growing demand for real-time applications, the inclusion of QoS-related parameters in the handover decision process is essential. This requirement inevitably increases the overall number of decision parameters, leading to unacceptably long algorithm execution time for a typical monolithic fuzzy-based handover decision system (MHDS), which employs a single fuzzy decision engine. In this paper, an adaptive traffic dependent fuzzy-based handover decision system (ATDHDS), which employs multiple fuzzy decision engines, each dedicated to a specific traffic type, is presented. The results show that, comparing with the MHDS, the proposed ATDHDS significantly improves the network selection performance and algorithm execution time. The ATDHDS is then enhanced by introducing additional fuzzy engines, which perform a QoS aggregation process, with the aims to further improve the overall network selection performance and to further reduce the algorithm execution time. The simulation results suggest that the enhanced ATDHDS (EATDHDS) successfully achieves both objectives.

Pages: 118 to 129

Copyright: Copyright (c) to authors, 2014. Used with permission.

Publication date: June 30, 2014

Published in: journal

ISSN: 1942-2644

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