A cross‐layer TCP for providing fairness in wireless mesh networks |
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| Authors: | Jin Ye Jian‐Xin Wang Jia‐Wei Huang |
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| Affiliation: | 1. Key Laboratory of Cognitive Radio and Information Processing (Guilin University of Electronic Technology), Ministry of Education, China;2. Guangxi Key Laboratory of Information and Communication, Guilin 541004, People's Republic of China;3. School of Information Science and Engineering, Central South University, Changsha 410083, People's Republic of China |
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| Abstract: | The fair allocation of resources among different nodes is one of the critical problems in wireless mesh networks. Existing solutions mainly focus on rate‐limitation policies or distributed fair MAC schemes at the potential expense of total network utilization. This paper investigates a special starvation problem among TCP flows that are different hops away from the BS, as well as its recently proposed solution, the ‘Minimum Content Window’ policy based on IEEE 802.11e. It is found that the aggregate throughput degrades sharply because the effect of this policy on the TCP congestion mechanism has been overlooked. This paper proposes a priority‐based congestion control by using ‘Cross‐Layer Explicit Congestion Notification’. Analysis and simulation results demonstrate that our scheme can improve the fairness of TCP flows while the aggregate throughput is at least 20% higher than the ‘Minimum Content Window’ policy. Copyright © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | wireless mesh network cross‐layer design fairness transport control protocol |
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