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有读书笔记Going realistic and optimal: A distributed multi-hop broadcast algorithm for vehicular safety

唐唐 添加于 2011-7-20 20:22 | 3081 次阅读 | 0 个评论
  •  作 者

    Amoroso A, Marfia G, Roccetti M
  •  摘 要

    A subject of great interest and important investments by governments, navigation system companies and street management authorities is highway safety. In this context, an important role is played by applications designed to warn drivers of upcoming dangers. An example is vehicular accident warning systems, which advertise accident events to approaching vehicles. The effectiveness of currently in use vehicular accident warning systems can be jeopardized by their: (a) inability to provide an accident warning to the closest approaching vehicles; and, (b) high delays in advertising an event. In fact, such systems are unable to reach the vehicles that are closest to an accident site due to the absence of any deployed automatic detection and broadcast mechanisms. The future deployment of Vehicular Ad hoc Networks (VANETs) can fill this gap. By leveraging on the distributed nature of ad hoc networks, accident warning systems can rapidly alert the vehicles which most risk their involvement in a crash. To reach this goal, VANET-based accident warning systems require the design of efficient broadcast algorithms. A number of solutions have been proposed in the past few years. However, no such proposals, to the best of our knowledge, assume realistic wireless propagation scenarios. The scope of this paper is to present an optimal distributed algorithm, working at the application layer, for the broadcast of safety messages in VANETs. Optimality, in terms of delay, is achieved in unidimensional highway scenarios and under realistic wireless propagation assumptions. This is the only algorithm, to this date, capable of reaching all vehicles with the minimum number of transmissions within a realistic setting.
  •  详细资料

    • 文献种类: Journal Article
    • 期刊名称: Computer Networks
    • 期刊缩写: Computer Networks
    • 期卷页: 2011  55 10 2504-2519
    • ISBN: 1389-1286
  • 学科领域 信息系统 » 自动化控制

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    信息科学综合  
  • 相关链接 DOI URL 

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