Title :
An analytical model for the IEEE 802.11e enhanced distributed coordination function
Author :
Tao, Zhifeng ; Panwar, Shivendra
Author_Institution :
Dept. of Electr. & Comput. Eng., Polytech. Univ. Brooklyn, NY, USA
Abstract :
The IEEE 802.11e protocol is designed to enhance the QoS capability of wireless local area networks (WLAN). In this paper, we propose a three dimensional Markov chain model for the 802.11e enhanced distributed coordination function (EDCF) mode and compute the maximum sustainable throughput and service delay distribution for each priority class when under heavy load. This provides an analytical approach to pick the parameter values associated with EDCF to meet the QoS requirements of each priority. This is accomplished by modeling the performance impact of all the major QoS-specific features (i.e. CWMin, CWMax, AIFS, internal collision resolution) of the 802.11e EDCF mode.
Keywords :
Markov processes; protocols; quality of service; wireless LAN; IEEE 802.11e protocol; QoS; WLAN; enhanced distributed coordination function; maximum sustainable throughput; quality of service; service delay distribution; three dimensional Markov chain model; wireless local area network; Access protocols; Analytical models; Delay; Distributed computing; Explosives; Media Access Protocol; Throughput; Traffic control; Wireless LAN; Wireless application protocol;
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
DOI :
10.1109/ICC.2004.1313322