多接口车联网可变带宽信道分配算法研究

项目名称： 多接口车联网可变带宽信道分配算法研究

项目编号： No.61300039

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 自动化技术、计算机技术

项目作者： 彭鑫

作者单位： 湖南理工学院

项目金额： 24万元

中文摘要： 满足交通环境应用要求的可变带宽信道分配技术是车联网(VANET: Vehicular ad hoc networks)成功部署的关键一环。本研究针对车辆运动速度快、拓扑随路网分布的实际情况，提出满足车联网动态拓扑特性的可变带宽信道分配方案。首先，研究多接口车联网逻辑拓扑描述方法和冲突图构建策略。根据动态拓扑和连通性等要素间的制约关系，研究链路无冲突并行传输问题及半定规划链路调度方法。通过挖掘城市交通车辆运动特点，提出车联网地理成簇策略，并在此基础上构建基于车辆位置装箱的离线信道分配机制，以降低拓扑动态特性对信道分配的影响。在确定带宽分配优化目标的基础上研究网络初始数据流分配方法，并针对路由与网络负载之间的耦合关系研究链路负载感知的地理路由策略，尽量维持优化的网络负载分布。最后，构建车联网可变带宽信道分配技术的评价策略和仿真验证平台，对提出的方案进行评估，促进在车联网中的可靠部署。

中文关键词： 车联网；信道分配；数据分发；定位；跨层优化

英文摘要： This project focuses on the critical technologies for vehicular ad hoc networks(VANETs), which have emerged as an essentially new paradigm for the design of communication protocols, mobility models, and a variety of new services. This technology has its roots in on-board embedded sensors, wireless interface, embedded computers and protocols or algorithms for mobile ad hoc networks(MANETs), which enable vehicle-to-vehicle communications without communication infrastructure (e.g., wireless basestations). A fundamental yet open issue is addressed: how to promote the parallel transmission capability of wireless links and overall throughput in VANETs? To address the unique challenges presented by mobility-induced dynamic topology problem, a complimentary approach to variable bandwidth channel allocation technology in complicated transportation environment is employed. The project focuses on following issues: (1) Aiming at topological dynamics of multi-radio VANETs, to research descriptive approach of logical topology and construction method of link conflict graph. (2) Exploring the relationship of the high-speed mobility of vehicles and network connectivity, to research collision-free parallel transmission of links and semi-definite programing based link scheduling problem. (3) In order to lower the impact of topol

英文关键词： Vehicular ad hoc networks；Channel allocation；Data delivery；Localization；Cross-layer optimization