A Distributed Prioritization Scheme between Access Points for Densely Deployed Networks

Random backoff counter based contention schemes have some drawbacks. They are basically unfair in short periods and unable to provide differentiated services between participants. Since these drawbacks are more serious when the participants are access points rather than mobile nodes, we propose a prioritization scheme to enhance the short-term fairness and to give different priorities between them. Our proposed scheme consists of two parts: assigning higher priority to a long waiting access point and probabilistically giving one level higher priority to some access points for differentiation. Through analysis and simulation, we verify that our prioritization scheme enhances the short-term fairness and achieves the priority differentiation between participants.