WSN中基于跨层策略的低能耗/高可靠通信问题研究

Research of Energy Conservation and Reliable Communication Based on Cross-layer Strategy in WSN

可靠通信、低能耗是无线传感器网络的热点研究性能指标。为了提升网络的整体性能,首先在物理层、路由层上分别提出功率反馈控制算法与一种路由量度;其次分析了上述两种性能指标内在的矛盾,并在此基础之上设计一种以可靠通信为前提,节约能量的跨层优化算法。研究结果发现,现有的跨层优化算法可以在一定程度上提升网络性能,但是存在局限性;从性能指标内在矛盾出发,合理设计算法才可以在众多矛盾之中找到最优解。

Recently, many researches of wireless sensor networks focus on reliable communication and energy conservation. For advancing the networks＇ whole capability, a feedback power control method and a router metric were put forward; secondly, many researches were operated on analyzing the contradictions among the two capabilities, and a cross-layer arithmetic which could conserve energy in condition of reliable communication was put forward. The result shows that, the existing cross-layer arithmetic can advance the network＇s capability, but it has its shortage; the best solution can be got from the contradictions only by researching the capabilities＇ contradictions.