Title :
Downlink Temporal Fairness in 802.11 WLAN Adopting the Virtual Queue Management
Author :
Huang, Jiawei ; Wang, Jianxin ; Jia, Weijia
Author_Institution :
Sch. of Inf. Sci. & Eng., Central South Univ., Changsha
Abstract :
In multi-rate 802.11 wireless LAN, when the wireless node with lower data rate dominates shared channel usage time, the throughput experienced by other nodes transmitting at higher data rates will be drastically reduced. While most fair AQM (active queue management) algorithms are based on throughput fairness, we prove that temporal fair AQM algorithm can achieve more total throughput than throughput fair AQM algorithm in multi-rate 802.11 WLAN. The authors propose a temporal fair AQM-TFRED (temporal fair RED) on AP (access point) in multi-rate 802.11 WLAN. Taking into account the transmission rate of each flow, TFRED sets 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 a 40% increase in total throughput.
Keywords :
computer network management; queueing theory; wireless LAN; AQM algorithm; access point; active queue management; downlink temporal fairness; multirate IEEE 802.11 WLAN; temporal fair RED; throughput fairness; virtual queue management; wireless LAN; wireless node; Bandwidth; Degradation; Downlink; Peer to peer computing; Quality of service; Switches; Throughput; Traffic control; Wireless LAN; Wireless networks;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.562