Analysis of coverage problem under border effects in wireless sensor networks  

作　　者：金岩 

机构地区：[1]School of Computer Science,Harbin Institute of Technology,Harbin 150001,P.R.China

出　　处：《High Technology Letters》2008年第1期61-66,共6页高技术通讯（英文版）

基　　金：the National Natural Science Foundation of China(No.60473001,60572037)

摘　　要：Wireless sensor networks can be used to monitor the interested region by deploying dense sensor nodes. Coverage is a primary metric to evaluate the capacity of monitoring. In this paper, we focus on the coverage problem under border effects, where the sensor nodes are distributed in a circle-shaped region randomly. Under this scenario, we derive the expected coverage of the sensor node and the total network coverage provided by n sensor nodes accurately by probability. These findings are useful to determine the related parameters （sensing range, number of sensor nodes and radius of monitored region） for a specific network coverage ratio. Simulation results demonstrate that our analysis is correct and effective.Wireless sensor networks can be used to monitor the interested region by deploying dense sensornodes.Coverage is a primary metric to evaluate the capacity of monitoring.In this paper,we focus on thecoverage problem under border effects,where the sensor nodes are distributed in a circle-shaped regionrandomly.Under this scenario,we derive the expected coverage of the sensor node and the total networkcoverage provided by n sensor nodes accurately by probability.These findings are useftd to determine therelated parameters(sensing range,number of sensor nodes and radius of monitored region)for a specificnetwork coverage ratio.Simulation results demonstrate that our analysis is correct and effective.

关 键 词：wireless sensor networks COVERAGE border effects 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TN929.5[自动化与计算机技术—控制科学与工程]