Routing-Aware Channel Selection in Multi-Radio Mesh Networks

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Executive Summary

Efficient channel selection is essential in 802.11 mesh deployments, for minimizing contention and interference among co-channel devices and thereby supporting a plurality of QoS-sensitive applications. In this paper, the authors propose ARACHNE, a routing-aware channel selection protocol for wireless mesh networks. ARACHNE is distributed in nature, and motivated by the measurements on a wireless testbed. The main novelty of the protocol comes from adopting a metric that captures the end-to-end link loads across different routes in the network. ARACHNE prioritizes the assignment of low-interference channels to links that need to serve high-load aggregate traffic and/or already suffer significant levels of contention and interference.

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