摘要
文章提出了一种无线传感器网络性能评价及优化方法,以单位能耗所支持的平均数据速率为量度,分析了路由策略、接入机制及物理层传输技术对网络性能的综合影响.在讨论单跳分组成功传输概率、时延的基础上,将问题拓展至多跳网络,对网络端到端分组成功传输概率、耗时、耗能进行了统计分析,导出了单位能耗所支持的平均数据速率的表达式,并依此对网络性能进行了仿真研究.结果表明:网络性能可以通过优化分组发送概率和编码纠错能力的方法得到较大改进.
The paper proposes a novel optimization approach of performance for WSN.The end-to-end data rate per the unit of energy is introduced such that the integrated effects of the routing algorithm,the access control protocol and the transmission technologies on the performance of WSN are discussed.The packet success ratio and delay per hop were derived,based on which the end-to-end packet success ratio,delay and energy cost were deduced.Finally,the expression of the average end-to-end data rate was derived and the performance of WSN was analyzed.The simulation results demonstrate that the performance of WSN can be enhanced greatly by optimizing the transmission probability of packet and error correcting capability.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2010年第4期882-886,共5页
Acta Electronica Sinica
基金
国家自然科学基金(No.60503049)
关键词
无线传感器网络
优化
能量效率
路由策略
时延
wireless sensor networks
optimization
energy efficiency
routing strategy
delay
