Performance Analysis of IEEE 802.11e EDCA

Abstract

The main purpose of the IEEE 802.11 group e is to support Quality of Service (QoS) for wireless networks. It uses Enhanced Distributed Channel Access (EDCA) to differentiate service of priorities by means of various Inter-Frame Space (IFS) and Contention Window (CW). In order to further develop efficient QoS management schemes for the IEEE 802.11e networks, we propose an analytical model to evaluate throughput and delay under different multimedia traffic flows, namely, voice, video, and data. The correctness of our analysis has been validated via simulation results. Throughout our model, call admission control (CAC) and resource management can be easily applied, and thus QoS for hybrid requirements is supported.