A Multiple Channel Assignment Algorithm and Routing Protocol Based on Wireless Mesh Networks
Nan Li · Journal of Wuhan University · 2011
This paper proposes a distributed channel assignment algorithm CLBCA(channel load based channel assignment) and a hybrid routing protocol TOIRP(tree-based and on-demand integrated routing protocol) for multi-channel wireless mesh networks.A new routing metric CETTI(cumulative expected transmission time with interference) is proposed for its advantage of quantifying the interference of communication by distinguishing interference into inter-flow interference and intra-flow interference.Both hop-count and delay are taken into consideration to improve the throughput.The channel assignment algorithm is divided into two phases: radio-neighbor binding and channel-radio binding.This channel assignment algorithm seeks the full use of each channel yet avoids the channel-dependency problem which is common in the multi-channel environment.Simulation results show that TOIRP has better throughput and less delay.