接收方发起发送方主导的无线传感器网络MAC协议设计

Receiver-initiated Sender-dominated MAC Protocol Design in Wireless Sensor Networks

在异步的由接收方发起的无线传感器网络媒体接入控制协议设计中,传统协议采用了接收方主导的唤醒方式,延长了发送节点持续侦听信道的时间,导致传输时延和能耗的增加。分析了节点唤醒方式对传输时延的影响,提出一个发送方主导唤醒的RISD-MAC协议,使接收方能够根据发送方的唤醒调度动态调整自己的唤醒时间,以与发送节点的数据发送相适应,从而提升传输效率。仿真结果表明,与RI-MAC协议相比,RISD-MAC协议能够在保证分组投递率的情况下获得更少的传输时延以及更低的占空比。

In the design of asynchronous receiver-initiated wireless sensor network medium access control protocols,conventional protocols adopt receiver-dominated wakeup manner,which prolongs the period for persistent channel detection of upstream sender,thus increasing both delivery latency and energy consumption.The impact of different wakeup methods on delivery delay is studied and a novel receiver-initiated sender-dominated medium access control(RISDMAC)protocol is thus proposed to adjust the wakeup time of the intended receiver adaptively based on the wakeup schedule of its upstream sender,which guarantees the rendezvous of data delivery of both sides to achieve communication efficiency.The simulation results show that compared with RI-MAC,a state-of-the-art medium access control protocol in wireless sensor networks,RISD-MAC achieves less delivery latency and lower duty cycle while maintaining comparable packet delivery ratio.