An Efficient MAC Scheme for Wireless Sensor Networks
Huimin Zhang · Radio Engineering of China · 2007
Media Access Control(MAC) protocols influence the energy efficiency of Wireless Sensor Networks(WSNs) significantly,and SMAC is a typical scheme.There is no global synchronization of the schedules in SMAC.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 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.Simulations show the efficiency and scalability of the scheme.The scheme also fulfills the requirements of distribution and economy in WSNs.