An Efficient MAC Scheme Based on Localization for WSN
Yang Quan-sheng · Computer Technology and Development · 2009
S-MAC is one of the most efficient Media Access Control(MAC) protocols which influence the energy efficiency of WSN significantly.But there is no global synchronization of the schedules in S-MAC.Nodes form clusters,in which the nodes synchronize locally.The energy of boundary nodes between clusters is depleted faster than that of the inner nodes.An improved scheme making full use of RSSI which is available for localization is presented to solve the problem.The global synchronization is achieved,the clusters incorporate and the boundary nodes disappear.The energy efficiency in MAC and the connectivity of networks are improved.