Abstract
To reduce inter-link interference and balance networks loads, this paper presents and evaluates a cross-layer algorithm for multi-radio multi-channel wireless mesh networks (WMNs), while conducting routing channel assignments. In channel assignment phase, we propose a greedy algorithm based on a multi-radio multi-channel interference model and select the channel with minimum of interference degree. In the routing phase, a new routing parameter which comprehensively considers interference, delay, load balancing and other factors is proposed. The new algorithm is compared with existing algorithm that is multi-radio multi-channel WMN based on ad hoc on-demand distance vector routing (MRMC-AODV) to illustrate the advantages. When the load reaches 6 Mbps, the throughput exceeds 14% of the MRMC-AODV, with a delay of nearly 80% of the MRMC-AODV latency and it reduces packet loss ratio by about 12%. The simulation results show that this algorithm can effectively improve the network throughput, reduce delay and decrease packet loss ratio.
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