EURASIP Journal on Wireless Communications and Networking 
Volume 2006 (2006), Article ID 65836, 9 pages
doi:10.1155/WCN/2006/65836

A New MAC Protocol with Pseudo-TDMA Behavior for Supporting Quality of Service in 802.11 Wireless LANs

Georgios S. Paschos,1 Ioannis Papapanagiotou,1 Stavros A. Kotsopoulos,1 and George K. Karagiannidis2

 1Wireless Telecommunications Laboratory, Department of Electrical and Computer Engineering, University of Patras, Kato Kastritsi, Patras 26500, Greece
2Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
Received 21 June 2005; Revised 12 October 2005; Accepted 28 November 2005

Recommended by Bhaskar Krishnamachari

Abstract

A new medium access control (MAC) protocol is proposed for quality-of-service (QoS) support in wireless local area networks (WLAN). The protocol is an alternative to the recent enhancement 802.11e. A new priority policy provides the system with better performance by simulating time division multiple access (TDMA) functionality. Collisions are reduced and starvation of low-priority classes is prevented by a distributed admission control algorithm. The model performance is found analytically extending previous work on this matter. The results show that a better organization of resources is achieved through this scheme. Throughput analysis is verified with OPNET simulations.