Summary
International Symposium on Antennas and Propagation
2006
Session Number:3B1b
Session:
Number:3B1b-5
An Analytical Model of Multi-rate Channel for IEEE 802.11e EDCAF
Bih-Hwang Lee, Hui-Cheng Lai,
pp.1-5
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
IEEE 802.11e provides the guaranteed quality of service (QoS) by providing different transmission priorities. IEEE 802.11e improves the media access control layer of IEEE 802.11 to satisfy the different QoS requirements by introducing two channel access functions: the enhanced distributed channel access (EDCA) and HCF controlled channel access (HCCA). Therefore, most devices support different transmission rates in wireless network. Generally a station using a lower transmission rate will occupy communication channel for a longer time and degrade system performance, which causes bandwidth waste and unfairness and cannot provide the guaranteed QoS for the stations with higher transmission rates. This paper proposes an multi-rate discrete Markov chain model to analyze the performance of EDCAF.