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
出处
《传感器与微系统》
CSCD
北大核心
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)
关键词
无线传感器网络
MAC协议
信道预约
反馈
低时延
wireless sensor networks（WSNs） MAC protocol channel reservation feedback low-latency
