无线传感器网络DMD-MAC协议的研究  

Research of DMD-MAC Protocol in Wireless Sensor Network

作　　者：黄景武[1] 邹传云[1] 陈瑞鑫[1] 

机构地区：[1]西南科技大学,四川绵阳621010

出　　处：《现代电子技术》2009年第23期68-70,73,共4页Modern Electronics Technique

基　　金：国家自然基金项目冲击无线电新调制方法研究(60472092);四川省教育厅科技项目超宽带无线网络吞吐率最大化研究(2006A096)

摘　　要：无线传感器网络是一项新兴的无线网络技术,而媒体访问控制(MAC)协议是无线传感器网络协议的重要组成部分,它的性能好坏直接关系到无线信道的利用率和整个网络的性能。介绍了DMD协议的工作原理,由于DMD协议没有数据冲突与串扰避免措施,容易造成数据冲突,数据传输质量无法得到保证,时延也比较大。针对DMD协议存在的问题,运用握手机制和数据分割的方法提出了一种改进型的DMD协议。从理论上证明,改进后的协议使网络平均任务周期大大降低,因此节点的能耗降低;此外,在节点冲突与串音避免,以及数据传递方面都有明显提高。Medium Access Control（MAC） protocol is an important part in Wireless Sensor Network（WSN）. The performance of whole network and the efficiency of wireless channels utilization mostly lie on the performance of MAC protocol. The working principle of DMD protocol is introduced. Data is not available as a result of an agreement to avoid conflict and crosstalk measures,easily lead to data conflicts, the quality of data transmission can not be guaranteed, also relatively large time delay in DMD protocol. An improved protocol is put forward, this paper to shake hands with the mechanism and method of data partitioning. Theory shows that the improved agreement significantly reduced the average task cycle and node energy consumption. Besides, the improved agreement to avoid conflict and crosstalk,as well as the data transmission has been greatly increased.

关 键 词：无线传感器网络 EDMD协议 节点 能耗 

分 类 号：TN92[电子电信—通信与信息系统]