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Assignment of dynamic transmission range based on estimation of vehicle density

Published: 02 September 2005 Publication History

Abstract

Vehicular Ad Hoc Networks (VANET) have several characteristics that distinguish them from other ad hoc networks. Among those is the rapid change in topology due to traffic jams, which also disturbs the homogenous distribution of vehicles on the road. For this reason, a dynamic transmission range is more effective in maintaining connectivity while minimizing the adverse effects of a high transmission power.We provide a relationship that allows vehicles to estimate the local density and distinguish between two phases of traffic, free-flow and congested traffic. The density estimate is used to develop an algorithm that sets a vehicle transmission range dynamically according to local traffic conditions.Simulations of various road configurations show that the algorithm is successful in maintaining connectivity in highly dynamic networks.

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      cover image ACM Conferences
      VANET '05: Proceedings of the 2nd ACM international workshop on Vehicular ad hoc networks
      September 2005
      106 pages
      ISBN:1595931414
      DOI:10.1145/1080754
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 02 September 2005

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      Author Tags

      1. VANET
      2. ad hoc networks
      3. connectivity
      4. density estimation
      5. inter-vehicle communications
      6. transmission range

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      Vanet05: Vehicular Ad-hoc Networks Workshop 2005
      September 2, 2005
      Cologne, Germany

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