基于预约和反馈的无线传感器网络MAC协议研究  

Research on MAC protocols for wireless sensor networks based on reservation and feedback

作　　者：李曼[1] 熊庆宇[1,2] 石为人[1] 冀文娟[1] 

机构地区：[1]重庆大学自动化学院,重庆400030 [2]重庆大学软件学院,重庆400030

出　　处：《传感器与微系统》2012年第3期46-49,共4页Transducer and Microsystem Technologies

基　　金：国家水体污染控制与治理科技重大专项基金资助项目(2009ZX07528-003);重庆市重大科技专项基金资助项目(CSCT;2010AA2036;CSCT;2008AB6115)

摘　　要：针对无线传感器网络中对通信实时性要求较高的应用环境,引入信道预约机制和反馈机制到S-MAC协议,提出了一种低时延的RF-MAC协议。该协议在有数据需要发送时先预约信道,各节点根据预约时间表进行数据传输。采用在数据传输过程中向源节点发送反馈信息的方法,实现后续数据的提前发送。通过仿真实验表明:RF-MAC协议有效地降低了数据传输的时延,同时改善了丢包率和网络吞吐量。Aiming at the high requirement of real-time communication application environment of wireless sensor networks, a low-latency reservation-feedback MAC（RF-MAC） protocol, which is based on channel reservation and feedback is proposed. In this MAC protocol, when a node is needed to send a data, a channel reservation message is firstly transmitted. Each node dispatches its data according to the reserved time list. The following data＇ s transmission is realized by using the method of sending feedback information to the source node during this process. Simulation results show that RF-MAC protocol has a good effect in reducing the data＇ s transmission latency of wireless sensor networks, and it also imnroves the nackels＇ loss ratin and the thrnughnut nf the notwork

关 键 词：无线传感器网络 MAC协议 信道预约 反馈 低时延 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]