摘要
针对节点数量增加时无线传感器网络会产生数据包冲突增加和饱和吞吐量下降等问题,提出一种新的适用于低速无线传感器网络的LR-MAC机制.该法采取当站点成功发送数据后,先进行一段时间的退避再参与信道竞争的措施来对L-MAC机制进行改进.仿真结果表明,当网络规模发生变化时,LR-MAC在性能上明显优于L-MAC.
Aiming at the problem that the increasing of the node in the wireless sensor networks may cause the lower saturation throughput and the higher packet collision. A novel channel access control mechanism for WSN, i. e. Lowe-rate MAC （LR-MAC） was proposed that the site firstly backoff for a moment after the site successfully send the data. The simulation results demonstrated that when the network size varies, LR-MAC performs much better than the L-MAC does.
出处
《郑州轻工业学院学报（自然科学版）》
CAS
2012年第6期101-104,共4页
Journal of Zhengzhou University of Light Industry:Natural Science
基金
国家自然科学基金项目(60673185)
关键词
无线传感器网络
饱和吞吐量
分组丢弃概率
马尔可夫链模型
wireless sensor network （ WSN ）
saturation throughput
packet dropping probability
Markov chain model
