绿色无线汇聚传感器网络的聚合拓扑与传输研究

项目名称： 绿色无线汇聚传感器网络的聚合拓扑与传输研究

项目编号： No.61301083

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 徐桢

作者单位： 北京航空航天大学

项目金额： 24万元

中文摘要： 为了实现无线汇聚传输的绿色化，在本研究中，针对无线汇聚网络带来的挑战，将从网络结构、信息传输、和节点控制等三个方面着手研究，从网络级、链路级、节点级等三个层次，实现满足数据传输需求下的能量效率、频谱效率和电磁污染的联合优化。数据汇聚型的传感器网络以数据收集为主要工作任务，节点周期性的采集并产生具有时空相关性的含有有用信息的原始数据，本课题将在网络层面上构建避免多层干扰的具有动态聚合标准的聚合拓扑并分析其网络性能，在节点层面上研究基于混合接入控制的多层次动态节点睡眠调度和接入方法，在链路层面上研究结合网络编码和HARQ技术的协作传输方法，来降低传输功率，减少传输碰撞，提高信道利用率，综合实现绿色无线汇聚传感器网络。

中文关键词： 传感器网；网络协议；网络拓扑；跨层设计；协同传输

英文摘要： In the project, face to the challenges of green data gathering sensor networks, such as constrained battery, wireless losses and collisions, we will do some research in the fields of network topology, sensor access control, and cooperative communication techniques. The combined optimization methods on energy efficiency, frequency efficiency, and inference alignment will be developed from the view networks, links, and nodes, respectively. The main objective of data gathering networks is to collect raw datum from sensors, and relay them to the sink. In general, the sensors generate the data periodically from the snapshots. The data in the network are correlated either in time domain or in space domain. We will develop a tree-based interference-free data gathering topology considering the data aggregation/fusion operations for the whole networks, which is the base of the project, and we also will investigate the capacity of the tree-structure in the interference model. We will design a cross layer hybrid access control and nodal sleep scheme, which is to utilize the frequency resource efficiently. We also will propose a cooperative communication approach combining network coding and HARQ techniques. These techniques can minimize the power consumption for data transmission, reduce the probability of transmission col

英文关键词： sensor networks；network protocol；network topology；crosslayer design；cooperative transmission