Adaptive scheduling mechanism to enhance QoS guarantee
Jiao Yue-li · Jisuanji gongcheng yu sheji · 2010
IEEE802.11 media access control layer QoS support technology is researched.Based on wireless local area network MAC layer two kind of backoff mechanism DCF and EDCF,an enhanced adaptive slow decrease EASDCF scheme is proposed,and based on this union the idea of service classification of IEEE802.11e,through the different of largest contention window and retry limit different priorities is distinguished,and different services is provided for each priority.Simulation results show the classification strategy adopted by EASDCF mechanism improve the throughput of delay sensitive service,and also makes packet drop rate sensitive data service to be a reliable guarantee.It prove that the algorithm effectively enhance the network QoS and improve the entire network performance.