面向农田复杂时变环境的无线传感器网络高效传输与虚拟化关键技术研究

项目名称： 面向农田复杂时变环境的无线传感器网络高效传输与虚拟化关键技术研究

项目编号： No.61471067

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 温志刚

作者单位： 北京邮电大学

项目金额： 80万元

中文摘要： 在农田复杂时变环境下无线传感器网络监测中，存在监测面积广、网络规模大、节点分布不均、多级异构以及作物生长引进的信道环境复杂多变等特点，网络节点间拓扑连接关系动态变化，对网络连通覆盖性影响巨大。由于汇聚节点周边的节点需承担大量数据转发任务，形成能耗热点，存在数据冗余。现有垂直网络协议架构，不同角度的优化方案难以实现有机整合，且规模化网络控制算法的复杂度受限于节点计算资源。针对以上问题，研究农田复杂时变环境网络拓扑预测反馈调度机制，为网络连通覆盖与可靠高效地数据传输提供保证；考虑结合移动节点的数据传输控制策略，有助于提高网络连通覆盖性能与数据传输效率；研究动态环境下的感知融合策略，减少数据传输量，提高传输有效性；建立基于软件定义网络的农田无线传感器新型网络架构，实现传感网络的控制与转发解藕合，建立虚拟平台层为农田多源环境因子监测与自动化生产控制提供服务和参考，为实现农业数字化生产提供有力支撑。

中文关键词： 传感器网；软件定义网络；拓扑控制；精准农业；农田环境监测

英文摘要： In time-varying agricultural wireless sensor network (WSN) monitoring application, there are many characteristics, such as wide monitoring area, large scale network, random distribution, heterogeneous nodes, complex time-varying signal environment and varying network topology, which has a tremendous impact on coverage and network connectivity. Since the nodes around of sink have many data to transmit, energy hot spots have been formed. There are some overlap between nodes in both time and space, which causes data redundancy. In the current study, there are some problems including optimization complexity and limited computing ability of nodes .In order to resolve these problems, network topology control mechanism based on prediction and feedback scheduling will be studied. In this study, data transmission and control method based on mobile node would be researched, which could improve efficiency of data communication and network coverage. We will propose a new farmland wireless sensor network architecture based on software defined networking (SDN). In one word, our study will benefit the efficiently communication of WSN for complex time-varying environment of farmland.

英文关键词： Wireless Sensor Networks;Software Defined Networking;Topology Control;Precision Agriculture;Farmland Environment Monitoring