Exploitation of Opportunistic Spectrum for Vehicular Communication Systems

车辆通信系统(VCS)是一种新兴的信息和通信技术，旨在改善道路安全，支持智能交通，并为道路上的用户提供信息娱乐服务。近年来，为了技术的发展，全球各地都在开展各种研发活动。该研究项目旨在利用蜂窝网络、WiFi和专用短距离通信(DSRC)等异质无线网络技术，研究和开发高效提供各种车载通信服务，特别是车载互联网接入中高速率大容量数据传输的新型工程解决方案。特别是，该项目将开发(I)从蜂窝网络到WiFi/DSRC网络的智能数据流量分流方案，(Ii)蜂窝网络和WiFi/DSRC网络之间的互通框架，以在VCS中无缝提供服务，以及(Iii)利用车辆运动轨迹受限于道路几何的特性，在可用电视无线电频谱上动态接入以在车辆环境中传输数据。

Vehicular communication systems (VCS) are an emerging information and communication technology aimed to improve road safety, support intelligent transportation, and provide infotainment services to users on roads. Various R&D activities around the globe have been carrying out in recent years for the technology development. This research project is to investigate and develop novel engineering solutions for efficiently providing various vehicular communication services, especially for high-rate large-volume data transfer in in-vehicle Internet access, by taking advantage of heterogeneous wireless networking technologies including cellular networks, WiFi, and the dedicated short-range communications (DSRC). In particular, this project will develop (i) an intelligent data traffic offloading scheme from cellular networks to WiFi/DSRC networks, (ii) an inter-working framework between cellular networks and WiFi/DSRC networks for seamless service delivery in VCS, and (iii) dynamic access on available TV radio spectrum for data transfer in a vehicular environment, making use of the property that vehicle movement trajectories are limited to road geometry.