Title :
Dynamic TXOP Assignment for Fairness (DTAF) in IEEE 802.11e WLAN under Heavy Load Conditions
Author :
Guo, Nan ; Chen, Chen ; Pei, Chang-Xing
Author_Institution :
Pei Key Lab. of Comput. Networks & Inf. Security, Xidian Univ., Xi´´an
Abstract :
The IEEE 802.11e is an extension of the IEEE 802.11 to provide quality of service (QoS) for applications requiring real time services. However, when used with the multi-rate scheme, they suffer unfairness problem. On the other hand, the traditional contention window size (CW) update method actually depends on the collision times of the investigated station, which would possibly causes more contentions especially under heavy load conditions. In this paper, we propose a scheme, which utilizes the collision times to estimate contention degree before transmission, turn TXOP, and at the same time, solves the unfairness problem in the IEEE 802.11e networks employing the multi-rate scheme
Keywords :
quality of service; wireless LAN; IEEE 802.11e WLAN; contention degree estimation; dynamic transmission opportunity assignment for fairness; multirate scheme; quality of service; real time services; unfairness problem; Application software; Collision avoidance; Computer networks; Electronic mail; Information security; Laboratories; Multiaccess communication; Proposals; Quality of service; Wireless LAN; EDCA; IEEE 802.11e; WLAN; fairness; heavy load;
Conference_Titel :
Parallel and Distributed Computing, Applications and Technologies, 2006. PDCAT '06. Seventh International Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7695-2736-1
DOI :
10.1109/PDCAT.2006.58
