NeTS: Small: Information Dissemination in Vehicular Networks for Reducing Traffic Congestion

该项目的目标是开发解决方案，以减少城市地区的拥堵问题。在不久的将来，每辆车都将配备全球定位系统和专用短程通信能力。在拥挤的城市地区，部署了路侧单元（RSU）和中继节点（RN）。进入这些区域的每个车辆将报告其轨迹（即，到目的地的选择性路径）经由RSU到控制中心。RSU可以监控经过的车辆，并协助控制中心与车辆或车辆到RSU之间的数据传输。控制中心将负责根据当前的交通负荷决定如何通过调整某些车辆的轨迹或向某些区域的车辆发送警告信息来平滑交通。本计画将探讨此基础设施之可行性及三个相关研究议题。要解决的研究问题是：1）如何在给定的路线图中经济有效地部署最少数量的RSU和RN，以保证在这样的基础设施中数据分发的延迟和性能？2)如何有效地将数据从车辆传递到RSU，以及从RSU传递到车辆？3)如何及时有效地向可能受到特定交通事故影响的车辆发布与交通有关的警告信息？预计该项目将把对车对车和车对基础设施通信的理解提高到一个更高的水平。此外，该项目对社会产生了重大影响。不仅可以缩短每个人的通勤时间，而且总的能源节约及其相关的环境影响可能是巨大的。

The goal of this project is to develop solutions to reduce congestion problem in urban area. Each vehicle will be equipped with GPS and dedicated short-range communications (DSRC) capability in the near future. In congested urban areas, Road Side Units (RSUs) and Relay Nodes (RNs) are deployed. Each vehicle entering these areas will report its trajectory (i.e., a selective path to a destination) based on GPS to a Control Center via an RSU. RSUs can monitor the vehicles passing by and assist the data delivery between Control Center and vehicle or vehicle to RSUs. The Control Center will be responsible for deciding how to smooth the traffic based on the current traffic load by adjusting the trajectories of some vehicles or sending warning message to vehicles in certain areas. This project is to investigate the feasibility and three associated research issues of such an infrastructure. The research issues to be addressed are 1) How to cost effectively deploy the minimum numbers of RSUs and RNs in a given roadmap to guarantee the delay and performance of data dissemination in such an infrastructure? 2) How to effectively deliver data from vehicles to RSU and from RSU to vehicles? 3) How to disseminate traffic related warning messages to vehicles that may be affected by a given traffic incidence in a timely and effective manner? This project is expected to advance the understanding of vehicle-to-vehicle and vehicle-to-infrastructure communications to a higher level. Moreover, this project has a substantial impact to the society. Not only can the commute of each person be shortened, but also the total energy saving and its associated environmental impact can be huge.