摘要
现有的覆盖协议大多数都依赖于GPS、有向天线等基础设施或者定位机制,使节点获得其物理位置,这不仅成本高、能耗大,而且存在准确定位的问题·提出了一个分布的、高效节能、与节点位置无关的传感器网络覆盖协议(DELIC)·在DELIC协议中,节点与邻居交换信息并通过能量大小竞选工作节点,其他未竞选成功的节点关闭通信设备·模拟实验结果表明,DELIC协议不仅可以提供高质量的覆盖性能,而且具有良好的节能性能·DELIC协议性能超过OGDC,PEAS,GAF-like,Sponsor Area协议·
One of the major challenges in constructing WSNs is to maintain long network lifetime as well as sufficient sensing area. In this paper, the broad problems of coverage in WSNs are discussed, and coverage protocols dependent on infrastructures （e. g., GPS, directional antennas, etc） or some localization schemes in the existing solutions are identified. To eliminate the reliance on infrastructure, a distributed energyefficient location-independent coverage protocol （DELIC） is proposed, which aims to preserve coverage based on the local neighborhood information. Comparing its residual energy with its neighborhood, one node can independently make its decision to compete for becoming a working node. The simulation and analysis study demonstrate that the DELIC not only provides the high quality of area coverage and good scalability, but also provides better performance in the energy efficiency. The DELIC outperforms the PEAS, the GAF-like, the sponsor area and OGDC algorithm with respect to the quality of area coverage, total energy-consumption and energy-consumption balance.
出处
《计算机研究与发展》
EI
CSCD
北大核心
2006年第2期187-195,共9页
Journal of Computer Research and Development
基金
国家"八六三"高技术研究发展计划基金项目(2004AA112090)
国家"九七三"重点基础研究发展规划基金项目(2002CB312002)
国家自然科学基金项目(60573106)
江苏省自然科学基金创新人才项目(BK2005411)~~
关键词
无线传感器网络
覆盖
节能
状态调度
wireless sensor network
coverage
energy-efficiency
node state scheduling
