WiFi干扰环境下传感器节点新型信道接入方式研究

项目名称： WiFi干扰环境下传感器节点新型信道接入方式研究

项目编号： No.61272053

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 郭鹏

作者单位： 华中科技大学

项目金额： 85万元

中文摘要： 申请人承担的青年基金项目，通过研究传感器节点在初始随机部署环境下信道接入问题，实现节点间初始有效通信链路的建立及自组网任务。课题现接近尾声，取得的成绩包括：发表国际权威期刊论文5篇(第一作者3篇)、国际期刊论文1篇(第一作者)，国际著名会议论文5篇(第一作者或第一作者为申请人学生)。相关成果在申请人SenSys’09及''10的demos上得到应用。 基于该课题，申请人拟针对实际传感器节点通信链路被日益增多的同频段WiFi严重干扰现象，继续研究传感器节点抗WiFi干扰的信道接入技术，并在理论上优化链路吞吐量。申请人跳出前人基于机会式接入的干扰避免思想，有望取得突破性进展。其思路可概括为：利用信道短时相关预测的“干扰度”——而非传统仅考虑信道完全空闲时段，基于干扰恢复思想——而非传统干扰避免思想，提出自适应编码增益和包长优化的新型无线信道接入方式，有望显著提升节点链路吞吐量。

中文关键词： 传感器节点；无线局域网；干扰；信道接入；自适应传输

英文摘要： The applicant’s Young Scientists Fund studies the medium access problem for the newly randomly deployed sensor nodes, so as to establish effective communication links between the initial nodes to implement the self-organize duty. Now, the project is going to be completed. The main achievements include: 5 papers published by international authoritative journals (as the first author for 3 of them), 1 paper published by international journal (as the first author), and 5 papers published by famous international conferences (as the first author or the first authors are the applicant’s students). The key techniques proposed in the project are applied in the applicant’s demos accepted by SenSys 2009 and 2010. Based on the research work of the project above, the applicant considers the phenomena that sensor nodes in practice are usually seriously interfered by WiFi in the same frequency band, and proposes to further studies the media access techniques for sensor nodes to withstand the interference of WiFi. Moreover, the applicant will theoretically optimize the link throughput between sensor nodes under the WiFi environment. The applicant gets out of the restriction of the traditional opportunistic access idea and can achieve significant progress. The novel idea can be summarized as follows. Based on the collision rec

英文关键词： Sensor nodes；WiFi；Interference；Media access control；Adaptive communication