分布式多信道媒体访问控制协议在无线传感器网络中的应用研究

为了能够实时检测输油管道的运行状态，降低无线传感器网络（WSN）节点间的干扰，提高网络的吞吐量。提出了适用于节点链型分布的2种多信道WSN模型，讨论了单路径和双路径2种网络模型的信道分配方法和吞吐量，并且提出了相应的分布式MAC协议。根据机场输油管道的现场实验表明，单路径多信道WSN能够在降低能耗的情况下提高网络的吞吐量，双路径多信道WSN虽然需要较高的能耗，但具有一定的容错能力，而且网络吞吐量有很大提高。

Study on Application of Distributed Multi-channel MAC Protocols in WSN

In order to detect the running state of oil pipeline in real time,reduce the interference between nodes of wireless sensor network(WSN) and improve network throughput,two multi-channel WSN models for the nodes distributed in a line were proposed;the models of channel assignment for single path and dual path network and their network throughputs were are discussed;the corresponding distributed MAC protocol was presented also.Field experiment results show that the single-path channel wireless sensor network not only reduces the energy consumption but also increases the network throughput;the dual path channel wireless sensor network has some fault tolerance and improves network throughput greatly,although it requires higher energy consumption.