基于发布/订阅模型的WSN设计

Design of WSN Based on Publish/Subscribe Model

为降低通信频率对节点能耗的影响同时提高大规模节点下传感器网络的连通率,设计了一种以发布/订阅模型作为应用层数据交互方式的无线传感器网络。该网络利用6Lo WPAN技术实现组网,并以Contiki操作系统为平台完成了基于发布/订阅模型的MQTT-S应用层协议设计。测试结果表明,该设计能够有效降低节点的通信流量,实现对节点功耗以及网络通信优化,并能与互联网实现无缝连接减少开发成本,对大规模传感器网络的设计与应用具有重要意义。

To reduce the influence of traffic on the energy consumption of nodes and improve the connectivity of sen-sor networks in large scale nodes,a wireless sensor network has been designsed utilizing publish/subscribe model. This network uses 6LoWPAN networking technology combined with the Contiki operating system to achieve the MQTT-S that is an application layer protocol for wireless sensor networks. The test results show that the design can effectively realization of node power consumption and network communication optimization,which is of great signifi-cance for the design and application on a large scale sensor networks.