Performance study of access control in wireless LANs—IEEE 802.11 DFWMAC and ETSI RES 10 Hiperlan
Mobile Networks and Applications - Special issue on channel access in wireless networks
Distributed fair scheduling in a wireless LAN
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Wireless LAN Standards and Applications
Wireless LAN Standards and Applications
Wireless medium access control protocols
IEEE Communications Surveys & Tutorials
Quality-of-service in ad hoc carrier sense multiple access wireless networks
IEEE Journal on Selected Areas in Communications
HIPERLAN/1 MAC protocol: stability and performance analysis
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
On the service differentiation capabilities of EY-NPMA and 802.11 DCF
WWIC'05 Proceedings of the Third international conference on Wired/Wireless Internet Communications
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The growing penetration of WLANs in the market, as well as the widerspectrum of applications that these kinds of networks are called tosupport, demands the introduction of new methods for efficient mediumaccess. Today, the two dominating paradigms in medium access control arethose of dynamic assignment and contention based ones. EY-NPMA is acontention based scheme that exhibits very low collision rates, whilebeing quality of service aware. In this paper, we propose a solution tothe highly criticised drawback of the EY-NPMA protocol – the increasedoverhead. Towards this end, we propose and evaluate the performance of twomedium access schemes that are based on EY-NPMA and compare them to thebase protocol. The theoretical analysis of the proposed schemes shows thatthey make better utilization of the common medium. It also allows us todetermine the optimal working parameters for each one. Furthermore,extended simulation trials validate these results and confirm the goodcharacteristics of the proposed protocols.