多速率802.11 WLAN中时间公平的主动队列管理算法

Temporal fair active queue management algorithm for multi-rate 802.11 WLAN

提出一种多速率802.11 WLAN中AP上时间公平的主动队列管理(TFRED)算法。TFRED算法依据各流的数据发送速率,为通过AP的单流设置不同的丢包概率,以保证各无线节点占用相等的无线信道时间。分析和仿真实验表明:TFRED算法能保护单流的吞吐率,在保证时间公平的同时,有效地提高了WLAN的总吞吐率。

A temporal fair AQM--TFRED （temporal fair RED） on AP （access point） in multi-rate 802.11 WLAN was proposed. Taking into account the transmission rate of each flow, TFRED set different drop probability for each flow going through the AP to guarantee equal channel usage time for each wireless node. Analysis and simulation results show that, compared with throughput fair AQM algorithms, TFRED achieves temporal fairness, per-flow throughput protection, and increase in total throughput.