无线传感器网络SMAC协议的节能改进

分析SMAC协议的工作过程以及自适应侦听的原理，针对该机制存在的无谓侦听问题提出改进方案。在协议中引入上下节点表，使节点自行判断是否应当被唤醒，避免无谓侦听，减少能量损耗，同时对该改进方案进行仿真。实验结果表明，该方案是有效的。

Energy-saving Improvement for SMAC Protocol in WSN

This paper analyzes the work process of SMAC protocol and the principle of adaptive listening.Aiming at the problem of useless listening existed in this mechanism,an improved scheme is proposed.By introducing the up and down nodes table into this protocol,the nodes can decide whether they are waked up by themselves,which avoids useless listening,and reduces the energy consumption.The scheme is also simulated and experimental results show this improved scheme is effective.