A distributed coordination scheme to improve the performance of IEEE 802.11 in multi-hop networks

Fengji Ye,Haiming Yang,Hua Yang,Biplab Sikdar

IEEE Transactions on Communications（2009）

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摘要

This paper investigates the performance of IEEE 802.11 in multi-hop scenarios and shows how its aggressive behavior can throttle the spatial reuse and reduce bandwidth efficiency. An adaptive, layer-2, distributed coordination scheme for 802.11 using explicit medium access control (MAC) feedback is then proposed to pace the transmissions on adjacent nodes, thereby assisting the MAC protocol to operate around its saturation state while minimizing resource contention. Simulation results show that the proposed scheme outperforms the original 802.11 MAC.

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关键词

bandwidth efficiency,spatial reuse,saturation state,ieee 802.11,resource contention,wireless lan,wireless local area networks,bandwidth efficiency reduction,feedback,mac protocol,medium access control,proposed scheme,aggressive behavior,access protocols,multihop networks,multi-hop scenario,explicit medium access control,mac feedback,multi-hop network,coordination scheme,distributed coordination scheme,adjacent node,throughput,topology,layer 2,adaptive control,spread spectrum communication,bandwidth,pipelines,ieee 802 11,network topology,local area networks,indexing terms

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