摘要： 为解决无线传感器网络能耗过大和效率不高的问题，提出一种功率控制和多速率自适应的PR-MAC协议。该协议采用功率控制和多速率自适应技术，在降低能耗的同时提高网络的吞吐量。仿真实验结果表明，该协议采用基于节点剩余能量和距离基站跳数的随机退避策略可提高网络效率，在选择节点发送数据上考虑节点的剩余能量和距离基站跳数等因素，能有效地平衡无线传感器网络的能量。

关键词: 无线传感器网络, 功率控制, 多速率自适应, 随机退避, 冲突避免

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.

Key words: Wireless Sensor Network(WSN), power control, multi-rate adaptation, random backoff, conflict avoiding

中图分类号: 

• TP393