Exploitation of Opportunistic Spectrum for Vehicular Communication Systems

车载通信系统（VCS）是一种新兴的信息通信技术，旨在提高道路安全，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，在全球范围内开展了各种研发活动，以促进技术的发展。本研究项目旨在通过利用蜂窝网络、WiFi和专用短程通信（DSRC）等异构无线网络技术，研究和开发新的工程解决方案，以有效地提供各种车载通信服务，特别是在车载互联网接入中进行高速大容量数据传输。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卸载方案，（ii）蜂窝网络和WiFi/DSRC网络之间的互通框架，以便在VCS中实现无缝服务交付，以及（iii）利用车辆运动轨迹受道路几何形状限制的特性，动态访问可用的电视无线电频谱，以便在车辆环境中进行数据传输。

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.