NeTS: Small: A Timing Perspective on Information Dissemination in Vehicular Adhoc Networks

NetS：小型：车载自组织网络中信息传播的时序视角

• 批准号: 1018447
• 负责人: Wenye Wang
• 金额: $ 40万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1018447&HistoricalAwards=false
• 关键词: NeTS; Small; Timing; Perspective; Information

This project focuses on the theoretical foundations for vehicular ad hoc networks (VANETs), which have emerged as a radically new paradigm for the design of networking protocols, mobility models, and a variety of new applications. This technology has its roots in on-board sensors in vehicles, global position systems (GPS) receivers, and algorithms/protocols for ad hoc networks, which enable vehicle-to-vehicle communications without infrastructure equipment (e.g., base stations in cellular systems). A fundamental yet open issue is addressed: how rapidly and efficiently can information be disseminated in a vehicular ad hoc network? To address the unique challenges presented by mobility-induced time dynamics, a complimentary approach of networking analysis and physical channel exploitation is employed. The project focuses on three issues: (1) Development and analysis of new measures of connection times among vehicles in percolated VANETs, in contrast to traditional measures of network connectivity. (2) Exploration of the impact of fading-induced channel variation on network performance and development of new fading prediction-aided routing mechanisms that integrate adaptive transmission techniques, e.g. rate and relay selection. (3) Identification of the theoretical time limits of information dissemination and capacity-delay trade-offs when nodes move at high speeds and in highly dynamic vehicular networks. As vehicular communications advance large-scale and social networks, this project addresses an acute and timely demand for exploring fundamental principles of mobility-induced channels and network dynamics, which have not been studied systematically, but have tremendous impact on routing protocol designs, optimization techniques for performance analysis and estimation, and modeling of network architecture and topology.

该项目的重点是车载自组织网络（VANESTA）的理论基础，这已经成为一个全新的模式，设计网络协议，移动模型，和各种新的应用程序。该技术的根源在于车辆中的车载传感器、全球定位系统（GPS）接收器和用于自组织网络的算法/协议，其使得能够在没有基础设施设备（例如，蜂窝系统中的基站）。一个基本而开放的问题是：如何快速和有效地传播信息的车辆自组织网络？为了解决由移动性引起的时间动态所带来的独特挑战，采用了网络分析和物理信道开发的互补方法。 该项目重点关注三个问题：（1）开发和分析与传统的网络连接性测量相比，在VANGAN中车辆之间连接时间的新测量方法。(2)探索衰落引起的信道变化对网络性能的影响，并开发新的衰落预测辅助路由机制，该机制集成了自适应传输技术，例如速率和中继选择。(3)当节点高速移动和在高度动态的车辆网络中时，识别信息传播和容量延迟权衡的理论时间限制。随着车辆通信推进大规模和社交网络，该项目解决了一个急性和及时的需求，探索移动性引起的信道和网络动态的基本原理，这还没有被系统地研究，但有巨大的影响路由协议设计，优化技术的性能分析和估计，网络架构和拓扑结构的建模。