Abstract: In order to solve the problem of energy consumption is too large and efficiency is not high in Wireless Sensor Network(WSN), this paper presents a protocol with Power control and multi-rate adaptation Medium Access Control(PR-MAC). The protocol uses the power control and multi-rate adaptation technology to reduce the power consumption and improve the network throughput greatly. To avoid the conflict, the protocol uses the random backoff strategy of the node residual energy and froms the base station hops to improve network efficiency greatly, in choosing which node to send data, the protocol fully considers the factors of node residual energy and froms the base station hops, and so on. So it effectively balances the energy of WSN.
Wireless Sensor Network(WSN),