Title :
An analytical model for IEEE 802.11e EDCA
Author :
Tsai, Tzu-Chieh ; Wu, Ming-Ju
Author_Institution :
Dept. of Comput. Sci., Nat. Chengchi Univ., Taipei, Taiwan
Abstract :
Quality of service (QoS) support in wireless LAN (WLAN) is the main mission of the IEEE 802.11 group e. It uses enhanced distributed channel access (EDCA) to differentiate service of priorities by means of various inter-frame spaces (IFS) and contention windows (CW). In order to efficiently manage QoS for the IEEE 802.11e networks, throughput and MAC delay for several traffic flows from 4 different access categories (AC) should be more accurately estimated. A four-dimensional Markov model is proposed to evaluate these. The correctness of our analysis has been validated via simulation results. Throughout our model, call admission control (CAC) can be easily applied, and thus resource management for QoS support for multimedia applications is well achieved.
Keywords :
IEEE standards; Markov processes; access protocols; computer network management; multimedia communication; quality of service; telecommunication congestion control; telecommunication traffic; wireless LAN; CAC; EDCA; IEEE 802.11e; MAC delay; QoS; WLAN; access categories; call admission control; contention window; enhanced distributed channel access; four-dimensional Markov model; inter-frame space; multimedia applications; quality of service; resource management; throughput; traffic flows; wireless LAN; Analytical models; Call admission control; Communication system traffic control; Computer science; Delay estimation; Quality of service; Resource management; Throughput; Traffic control; Wireless LAN;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1495065
