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Overlay token ring protocol for vehicular communication networks.

机译：车载通信网络的覆盖令牌环协议。

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摘要

Vehicular communication has been an emerging topic among current wireless research. The vehicular communication can be classified to Inter-Vehicle Communication (IVC) and Road-to-Vehicle Communication (RVC). IVC and RVC support applications mainly on two aspects: safety applications aiming to reduce dangers on the road, and data applications aiming to provide information and entertainment to people on traveling. Vehicles nearby form Vehicular Ad hoc Networks (VANETs) without any fixed infrastructures. Due to the characteristics of vehicular networks such as quickly changing and unstable network topology, IVC has special requirements to the network protocols. Several MAC protocols have been appeared or improved based on previous work for IVC. But these protocols are designed either for QoS guaranteed data service or for reliable message broadcast. There is not a protocol including both application requirements and inexpensive to implement as well. MAC protocol for vehicular communication hasn't been finalized.; In this thesis, an overlay token ring protocol (OTRP) is proposed which can work on MAC layer with broadcast function and taking into the IVC features into consideration. In OTRP, vehicles are grouped to overlapped rings with a token passed in each ring as the sole right for transmission. The ring is dynamically updated in a distributed manner based on smart algorithm at each node. OTRP provides bounded delay by assigning maximum token holding time for each node. It also reduces collisions by decreasing the number of contention nodes by times of ring size. Fair and high throughput is obtained as well. Furthermore, it provides reliable and prompt broadcast of emergency messages by pre-emptively transmitting while applying the token as an acknowledgement. The time nodes reliably receive the message is within limit. Theoretical analysis is provided and simulation results are given to evaluate the performance of OTRP under saturated traffic conditions both in safety and data applications.
机译：车辆通信已经成为当前无线研究中的新兴话题。车辆通信可以分类为车间通信（IVC）和路对车通信（RVC）。 IVC和RVC主要在两个方面支持应用程序：旨在减少道路上的危险的安全应用程序，以及旨在为旅行中的人们提供信息和娱乐的数据应用程序。附近的车辆形成了车载自组织网络（VANET），而没有任何固定的基础设施。由于车辆网络的特性，例如快速变化和不稳定的网络拓扑，IVC对网络协议有特殊要求。基于IVC的先前工作，已经出现或改进了几种MAC协议。但是这些协议是为QoS保证的数据服务或可靠的消息广播而设计的。没有协议既包含应用程序需求，又没有实现成本。用于车辆通信的MAC协议尚未完成。本文提出了一种覆盖令牌环协议（OTRP），该协议可以在具有广播功能的MAC层上工作，并考虑了IVC特性。在OTRP中，车辆被分组到重叠的环中，并且在每个环中传递的令牌是唯一的传输权。环基于每个节点的智能算法以分布式方式动态更新。 OTRP通过为每个节点分配最大令牌保持时间来提供有限的延迟。它还通过将争用节点的数量减少了环大小的倍数来减少冲突。也获得了公平和高吞吐量。此外，它通过在将令牌用作确认的同时进行抢先传输来提供紧急消息的可靠，迅速的广播。节点可靠接收消息的时间在限制范围内。在安全和数据应用中，提供了理论分析并给出了仿真结果，以评估OTRP在饱和交通条件下的性能。

著录项

  • 作者

    Zhang, Jingqiu.;

  • 作者单位

    University of Waterloo (Canada).;

  • 授予单位 University of Waterloo (Canada).;
  • 学科 Engineering Automotive.; Engineering Electronics and Electrical.
  • 学位 M.A.Sc.
  • 年度 2007
  • 页码 72 p.
  • 总页数 72
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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