The Analysis of Multichannel Dual Clock Probability Detection CSMA Random Multiple Access

Abstract

Carrier Sense Multiple Access (CSMA) is a very important network communication protocol. According to the different ways of service agreement can be divided into: No-Persistent CSMA, 1-Persistent CSMA, P-Persistent CSMA. Although these protocols can improve the system throughput, but there are also some shortcomings, they are not fully utilized in the channel idle period, cannot provide the corresponding needs for various services. Therefore, from the point of view of improving the Quality of Service (QoS) of wireless communication network and utilization of channel resource. the Multichannel Dual Clock Probability Detection CSMA Random Multiple Access was proposed. In the protocol, the discrete continuous clock strategy was used to improve the QoS of each service in the wireless communication network. Based on the mathematical model, the throughput of the system and priority is obtained; Finally, the simulation shows that the new protocol can make use of the idle time of the channel, and achieve the system load balance by controlling the arrival rate of the priority, which ensures the QoS requirements of the high priority service.