无线传感网络竞争类MAC协议研究

A Survey of Competitive MAC Protocols for Wireless Sensing Network

介质访问控制(Medium Access Control,MAC)协议位于无线传感网络(Wireless Sensor Network,WSN)体系中的数据链路层,负责调配网络中节点的信道接入,保障了网络的高效通信。与调度类MAC协议和混合类MAC协议相比,竞争类MAC协议的复杂度低,可扩展性好,在低负载的网络环境中性能表现优异。首先概述了WSN中MAC协议的设计要点及分类;其次重点分析了经典的竞争类MAC协议及国内外最新的研究进展,并从协议的运行机制、性能等方面,进一步研究并总结出各协议的不足之处;最后提出了竞争类MAC协议未来重点的研究方向,为该领域的研究人员提供参考。

The MAC(Media Access Control)protocol is located at the data link layer of the WSN(Wireless Sensing Network)system,which is responsible for configuring the channel access of nodes in the network and ensuring efficient communication of the network.Compared with the scheduling MAC protocol and the hybrid MAC protocol,the competitive MAC protocol has low complexity,good scalability and excellent performance in low-load network environments.First,this paper summarizes the design points and classification of MAC protocols in WSN.Then,it focuses on analyzing the classic competitive MAC protocols and the latest research progress at home and abroad,and further studies and summarizes the disadvantages of each protocol from the aspects of the operation mechanism and performance of the protocol.Finally,it proposes the key research directions of future competitive MAC-like protocols,which provides a reference for researchers in this field.