综合覆盖调度的无线传感器网络跨层路由研究

Cross-Layer Design of Routing and Coverage-Preserving Scheduling in Wireless Sensor Networks

无线传感器网络由大量微小的传感器节点构成,各节点协作完成环境现象的分布式感知。覆盖控制作为无线传感器网络中的一个基本问题,反映了网络所能提供的"感知"服务质量。基于现有的集中式计算覆盖集合算法MLMC,通过改变计算覆盖集合条件,结合能量不均衡消耗的I-RDDD协议,观察了网络生存期的变化。仿真结果和分析表明,基于能量考虑和单组覆盖集合轮询的工作方式能获得更长的网络生存期。

Wireless sensor networks, consisting of thousands of small sensor nodes, can coordinate to perform distributed sensing of environmental phenomena. One of the most fundamental problems in wireless sensor networks is the coverage control problem, which reflects how well a region is apperceived. We adopted centralized coverage algorithm called Most-Constrained Least-Constraining（MCLC）, combining the Inverse-Return Delay based Directed Diffusion（I-RDDD） without good performance on trade-off of energy consumption, observed variety of network lifetime by modifying the condition of calculating coverage set. Simulation results and analysis show that the working which consider node energy and adopt only one coverage set Round Robin make network lifetime longer.