摘要
在无线传感器网络(WSN)中,对于涉及到异常事件的监测应用,例如水情监测中的灾害预警等,涉及到报警信号和普通信号的区别处理。如何保障报警信号的高实时性,同时平衡报警信号和普通信号的传输质量,少有研究。首先分析了WSN数据链路层的CSMA/CA协议,继而提出了一种基于加权公平队列思想的改进协议。仿真结果证实了改进协议在队列延时和网络能耗性能上的优越性。
In wireless sensor network when emergency events monitoring application are involved, for the mountain torrent disaster warning in regime monitoring application, the alarm signal and the ordinary signal should be dealed with diffierently how to guarantee the high real-time of important warning signal,and how to balance alarm signal and ordinary signal transmission quality, there is little research on them. After the analysis of the existing widely applied CSMA/CA protoca[ in wireless sensor network data link layer, this article proposed a improved-protocol based on weighted fair queue thought. At last, simulation results prove the superiority of improved protocol from average queue time delay and energy consumption.
出处
《电脑开发与应用》
2012年第4期24-26,共3页
Computer Development & Applications
