Performance Modeling of Multicast With Network Coding in Multi-Channel Multi-Radio Wireless Mesh Networks

Systems with multiple channels and multiple radios per node have been shown to enhance throughput of Wireless Mesh Networks (WMNs). Recently, network coding has also been proved to be a promising technique for improving network throughput of WMNs. However, the performance of network coding in the context of multicast, a form of one-to-many communication, in Multi-Channel Multi-Radio (MCMR) WMNs is still unknown. In this paper, the authors present analytical models for estimating the average end-to-end delay, throughput and packet delivery ratio of a network-coded multicast session in 802.11- based MCMR WMNs. The proposed models are then validated using numerical analysis and simulations. To the best of their knowledge, their work is the first that studies the performance of network-coded multicast in MCMR WMNs.