Issue No.11 - November (2008 vol.7)
Kai Li , Columbia University, New York
Xiaodong Wang , Columbia University, New York
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TMC.2008.61
We investigate the optimal design of a multihop wireless mesh network equipped with multiple orthogonal wireless channels and multiple radios. Specifically, we focus on solutions that can efficiently utilize the limited resource to support multiple unicast applications by routing and network coding. We propose a cross-layer optimization framework where the broadcasting feature of the wireless environment, which plays an important role in realizing the achievable gain of network coding, is taken into account. Moreover, we propose a network code construction scheme based on linear programming, with which the possible achievable Coding+MAC gain could be significantly increased. Delay constraints are also included in the network code construction formulation so that the possible impact of the extra decoding delay to the TCP/IP performance can be reduced without changing the upper-layer protocols. The proposed network design based on cross-layer optimization results in significant increase in network throughput.
Network planning, mesh network, wireless, backhaul network, cross-layer optimization, Network coding, multiple unicast
Kai Li, Xiaodong Wang, "Cross-Layer Design of Wireless Mesh Networks with Network Coding", IEEE Transactions on Mobile Computing, vol.7, no. 11, pp. 1363-1373, November 2008, doi:10.1109/TMC.2008.61