DMRC: dissemination of multimedia in vehicular networks using rateless codes

  • Authors:

  • Mohsen Sardari;Faramarz Hendessi;Faramarz Fekri

  • Affiliations:

  • School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA;Department of Electrical and Computer Engineering, Isfahan University of Technology, Isfahan, Iran;School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA

  • Venue:
  • INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

In this paper, we address the problem of delivering multimedia content to a sparse vehicular network from roadside infostations, using efficient vehicle-to-vehicle collaboration. Due to the highly dynamic nature of the underlying vehicular network topology, we depart from architectures requiring centralized coordination, reliable MAC scheduling, or global network state knowledge, and instead adopt a distributed paradigm with simple protocols. In other words, we investigate the problem of reliable dissemination from multiple sources when each node in the network shares a limited amount of its resources for cooperating with others. By using rateless coding at the Road Side Unit (RSU) and using vehicles as data carriers, we describe an efficient way to achieve reliable dissemination to all nodes (even disconnected clusters in the network). In the nutshell, we explore vehicles as mobile storage devices. We then develop a method to keep the density of the rateless coded packets as a function of distance from the RSU at the desired level set for the target decoding distance. We investigate various tradeoffs involving buffer size, maximum capacity, and the mobility parameter of the vehicles.