A cross-layer TCP for providing fairness in wireless mesh networks

作者：Ye, Jin^*; Wang, Jian-Xin; Huang, Jia-Wei

来源：International Journal of Communication Systems, 2011, 24(12): 1611-1626.

DOI：10.1002/dac.1238

• wireless mesh network
• cross-layer design
• fairness
• transport control protocol

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.

• 出版日期2011-12
• 单位中南大学; 桂林电子科技大学