A Bandwidth-Efficient Dissemination Scheme of Non-Safety Information in Urban VANETs Articles uri icon

publication date

  • June 2016

issue

  • 7

volume

  • 16

International Standard Serial Number (ISSN)

  • 1424-8220

abstract

  • The recent release of standards for vehicular communications will hasten the development of smart cities in the following years. Many applications for vehicular networks, such as blocked road warnings or advertising, will require multi-hop dissemination of information to all vehicles in a region of interest. However, these networks present special features and difficulties that may require special measures. The dissemination of information may cause broadcast storms. Urban scenarios are especially sensitive to broadcast storms because of the high density of vehicles in downtown areas. They also present numerous crossroads and signal blocking due to buildings, which make dissemination more difficult than in open, almost straight interurban roadways. In this article, we discuss several options to avoid the broadcast storm problem while trying to achieve the maximum coverage of the region of interest. Specifically, we evaluate through simulations different ways to detect and take advantage of intersections and a strategy based on store-carry-forward to overcome short disconnections between groups of vehicles. Our conclusions are varied, and we propose two different solutions, depending on the requirements of the application.

keywords

  • VANETs
    dissemination
    urban scenarios
    broadcast suppression scheme
    store-carry-forward
    vehicular broadcast protocol
    networks
    cast