摘要
本文考虑了n个传感节点和一个Sink组成的跳时脉冲无线电超宽带(TH-IR UWB)传感网,其中n个传感节点按照Poisson点过程分布在正方形上.推导结果表明密集分簇TH-IR UWB传感网的生存期界随着节点数的增加而增加;而扩展网络的生存期界随着节点数的增加而减小.研究也表明分簇网络的生存期界远大于非分簇网络的生存期上下界,因此分簇能极大地提高网络生存期.并且节点服从Poisson分布的分簇网络生存期界与节点服从均匀分布的分簇网络生存期界不同,因此节点的分布方式会显著影响网络的生存期界.
Considering time hopping impulse radio ultra wide band（TH-IR UWB） sensor networks composed n sensor nodes which are placed according to a Poisson point process on a square and a Sink.The results demonstrate that the bounds on the lifetime of dense network increase with the increase of the number of nodes n,and that of extended network decrease with the increase of the number of nodes n.The results also indicate the bounds on the lifetime of clustering sensor networks is far more than that of non-clustering network,thus clustering can evidently improve network lifetime.Furthermore,the bounds on the lifetime of clustering TH-IR UWB sensor network which the nodes are distributed according to a Poisson point process are different from that of clustering network which the nodes are placed according to uniform distribution,thus the behavior of nodes deploying can remarkably affect the lifetime bound.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2011年第10期2263-2268,2281,共7页
Acta Electronica Sinica
基金
国家自然科学基金(No.90818023
No.61003222)
国家973重点基础研究发展计划(No.2010CB328101
No.2011CB302804)
国家863高技术研究发展计划(No.2008BAH37B09)
长江学者和教育部创新团队
上海市科技创新计划(No.10DJ1400300
No.08GG08
No.09510701300)
教育部新教师基金(No.20090072120048)
中国博士后科学基金(No.20100480623)
关键词
无线传感网
超宽带
生存期
分簇
能量消耗
wireless sensor network
ultra wide band
lifetime
clustering
energy dissipation
