Routing with Load-Balancing in Multi-Radio Wireless Mesh Networks

Anh-Ngoc LE  Dong-Won KUM  You-Ze CHO  Chai-Keong TOH  

IEICE TRANSACTIONS on Communications   Vol.E92-B    No.3    pp.700-708
Publication Date: 2009/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.700
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Ad Hoc and Mesh Networking for Next Generation Access Systems)
wireless mesh network,  multi-channel,  multi-radio,  routing metric,  load balancing,  

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This paper addresses the interference and load imbalance problems in multi-radio infrastructure mesh networks where each mesh node is equipped with multiple radio interfaces and a subset of nodes serve as Internet gateways. To provide backbone support, it is necessary to reduce interference and balance load in Wireless Mesh Networks (WMNs). In this paper, we propose a new Load-Aware Routing Metric, called LARM, which captures the differences in transmission rates, packet loss ratio, intra/inter-flow interference and traffic load in multi-radio mesh networks. This metric is incorporated into the proposed load-balancing routing, called LBM, to provide load balancing for multi-radio mesh network. Simulation results show that LARM provides better performance compared to WCETT and hop-count routing metrics in LBM routing protocol.