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Online Channel Assignment in Multi-Radio Wireless Mesh Networks Using Learning Automata  
Ziaeddin Beheshtifard1,Mohammad Reza Meybodi2
*1, Islamic Azad University, Qazvin Branch, Email :
2, Amirkabir University of Technology, Email :
Abstract .In this paper, we look into the problem of channel assignment in multi-channel multi-radio wireless mesh networks. We propose a new learning automata based channel assignment scheme that adaptively improve network overall throughput by expecting channel state. Since the ability of sending packets via upstream links will be evaluation bases for assigning channels to radio interfaces on each node. We use a link capacity function that potentially reflects degree of interferences imposed by selected channels by each node. According to dynamics of system, proposed algorithm assigns channels to radio interface in distributed fashion such that minimize interference in neighborhood of a node. We analyze the stability of the system via appropriate Lyapunov-like trajectory; we show that stability and optimum point of the system is converged.
Keywords : Learning Automata ; Wireless Mesh Networks ; Channel Assignment

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