基于功率控制的无线传感器网络MAC协议研究

无线传感器网络是21世纪新兴的网络技术,它的出现使网络的发展进入一个新的阶段.近年来,对无线传感器网络介质访问控制协议的研究也越来越多.总结了近年来的研究成果,并针对S-MAC,T-MAC和D-MAC等几种典型的MAC协议进行了对比分析.研究出将功率控制机制引入到MAC协议中可以进一步减少能耗,给出了一种基于发射功率控制思想的MAC协议.PCSMAC协议.功率控制可以从直接的降低发送能量和间接的减少碰撞两个角度节约能耗,是一种有效的节能机制.仿真实验表明,引入功率控制后可以节约能耗达50%--96%左右.

Research on energy-efficient wireless sensor network MAC protocols

Wireless sensor network is an emerging network technology in the 21st century.Its emergence brings a new phase in the de-velopment of network.Lately,there are more and more investigations on wireless sensor network MAC protocols.The research results on MAC protocols is summarized,some typical MAC protocols are analyzed,such as S-MAC,T-MAC,D-MAC,and etc.The power control to modify the MAC protocols to reduce energy consumption is introduced,a new power controlled sensor MAC protocol(PSCMAC) is introduced for wireless sensor networks,which can provide an effective mechanism for improving energy efficiencies by decreasing the transmitting power directly or avoiding collision.The simulation results show that energy can be saved up to 50%~ 96% by it.