异构无线传感器网络跨层MAC协议研究现状

Review on Cross-Layer MAC Protocol of Heterogeneous Wireless Sensor Networks

在异构无线传感器网络(HWSN)中,节点异构性、链路异构性和网络协议异构性使得介质访问控制协议(简称MAC协议)的研究备受关注.为提升HWSN整体性能,跨层协议设计理论及方法应运而生.但目前关于HWSN跨层MAC协议的研究仍处于起步阶段,实际应用于HWSN的跨层MAC协议尚不成熟.针对当前HWSN中主要的跨层MAC协议进行了总结、分类和比较,并从信道访问策略和跨涉层次等方面选取了较典型的协议进行详细分析,旨在为HWSN跨层MAC协议的进一步研究提供参考,并为相关研究工作提供一定的借鉴.

In heterogeneous wireless sensor networks （HWSN）, nodes, links and protocol are all heterogeneity, which has aroused much attention to the research on media access control protocol （MAC Protocol） of HWSN. In order to improve the overall network performance, the relevant theory and methodology for the cross -layer design emerged. But the research of cross - layer MAC protocol for HWSN is just at the initial stage and the practical ap- plication of cross - layer MAC protocol for HWSN is still immature. In this paper, the current cross - layer MAC protocol of HWSN was summarized, classified and compared, and the typical protocol selected from the channel access strategy and related layers were analyzed in detail. Moreover, the possible development and existing problems of the cross - layer MAC protocol design were discussed to provide reference for future research.