基于OPNET的无线传感器网络节点跨层设计

无线传感器网络是一类由大量位置相对固定的节点所组成的无线通信网络，其节点能量、计算和通信能力都非常有限，因此，传统网络的层次设计和网络协议都难以应用到无线传感器网络中。为解决这些问题，该文在传统网络层次设计思想的基础上，提出了适用于无线传感器网络节点的跨层网络模型，基于OPNET网络仿真工具实现了节点的跨层网络模型设计，在此基础上实现了无线传感器网络中路由选择和数据汇聚等典型应用的仿真。结果表明，新的跨层网络模型能够很好地描述节点各个层次的功能，便于网络协议的综合设计和集中优化。

Cross-layer Design in Wireless Sensor Networks Based on OPNET

Wireless sensor networks (WSN) are a kind of wireless communication network made by a plenty of fixed nodes which have limited energy store and restricted computing and communication ability. Hence, traditional network layer design and network protocol aren’t applicable in WSN. Based on the spirit of traditional network layer design, a new cross-layer network model is proposed. The new model is realized in OPNET in which typical applications of route selection and data collection are simulated. The result shows that new cross-layer model can well describe the function of each layer and make network protocol design more concentrative and synthetical.