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Maximizing Aggregate Throughput in 802.11 Mesh Networks With Physical Carrier Sensing and Two-Radio Multi-Channel Clustering

Overview Spatial reuse in a mesh network allows multiple communications to proceed simultaneously, hence proportionally improving the overall network throughput. To maximize spatial reuse, the MAC protocol must enable simultaneous co-channel transmitters to maintain a separation distance that is sufficient to avoid interference. Within that distance, a set of orthogonal channels is employed by different links. This paper demonstrates that physical carrier sensing enhanced with a tunable sensing threshold is effective at avoiding co-channel interference in 802.11 mesh (static + multi-hop) networks. Moreover, for multi-channel mesh networks, an architecture for channel clustering based on two-radio nodes is proposed. Distributed clustering is achieved using the Highest-Connectivity Cluster (HCC) algorithm.

Further White Paper Details
Publisher	University of Washington	File Format	PDF
Date Published	June 2004	Downloads	2
Format	White Papers
Topics	Wi-Fi (802.11), Wireless LAN

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Maximizing Aggregate Throughput in 802.11 Mesh Networks With Physical Carrier Sensing and Two-Radio Multi-Channel Clustering

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