一种改进的无线传感器网络的通信调度机制研究

Research of novel traffic scheduling for wireless sensor networks

在基于IEEE 802.15.4协议的网络中使用能量有效性通信调度(EETS)机制,可以得到良好的超帧参数配置,但是由于EETS机制优先采用长帧传输数据,在低带宽要求的无线传感器网络中性能不太理想。考虑采用长帧和短帧传输数据两种情况,提出了一种改进的能量有效性通信调度(E-EETS)机制,仿真结果表明E-EETS机制提高了网络的吞吐量,进而可以优化超帧参数配置,因此能更高效地利用能量,带宽等网络资源。

Optimal parameters regarding the superframe in the IEEE 802.15.4 based networks can be obtained by using energy-efficient traffic scheduling scheme.But due to its preference to the long frames when trans-miting data,the performance of EETS in the situation of wireless sensor networks is not good.To overcome the limitation,an Improved Energy-Efficient Traffic Scheduling（I-EETS） scheme was proposed by consider-ing both short and long frames.Simulation results show that I-EETS can improve throughput of the network,thus can optimize the parameters of superframe,so it provides a way to use network resources including energy and bandwidth more efficiently.