Mobility

Achieving End-to-End Fairness in 802.11e Based Wireless Multi-Hop Mesh Networks Without Coordination

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Executive Summary

To mitigate the damaging impacts caused by interference and hidden terminals, it has been proposed to use orthogonal channels in wireless multi-hop mesh networks. The authors demonstrate however that even if these issues are completely eliminated with perfectly assigned channels, gross unfairness can still exist amongst competing flows which traverse multiple hops. They propose the use of 802.11e's TXOP mechanism to restore/enforce fairness. The proposed scheme is simple, implementable using off-the-shelf devices and fully decentralised (requires no message passing).

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