Promoting fluidity in the flow of packets of 802.11 wireless mesh networks
CoNEXT '07 Proceedings of the 2007 ACM CoNEXT conference
Model validation through experimental testbed: the fluid flow behavior example
Proceedings of the 4th International Conference on Testbeds and research infrastructures for the development of networks & communities
Gateway-assisted max-min rate allocation for wireless mesh networks
Proceedings of the 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
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The use of multi-hop wireless networks based on 802.11 technology is extensive and growing, owing to their ease of deployment and low cost. However, such networks exhibit poor fairness, starving nodes that are too many hops distant from the gateway. The best current solution to this problem is source rate limiting. While effective in many topologies, this fails to completely address the fairness problem. In this paper we investigate this problem of residual unfairness in multi-hop wireless networks that use source-rate limiting. We identify the five necessary conditions for its occurrence, showing that elimination of any of these conditions is sufficient to remove the remaining unfairness. For cases where the conditions are unavoidable, we present two simple changes that can ameliorate the problem, providing on average 30% improvement for the least-rate flow.