Robust position-based routing in wireless Ad Hoc networks with unstable transmission ranges

  • Authors:
  • Lali Barriére;Pierre Fraigniaud;Lata Narayanan

  • Affiliations:
  • Departament de Matemàtica, Aplicada i Telemàtica, Univ. Politècnica de Catalunya, Barcelona, Spain;CNRS, Laboratoire de, Recherche en Informatique, Université Paris-Sud, Orsay, France;Department of Computer Science, Concordia University, Montreal, Canada

  • Venue:
  • DIALM '01 Proceedings of the 5th international workshop on Discrete algorithms and methods for mobile computing and communications
  • Year:
  • 2001

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Abstract

Several papers showed how to perform routing in ad hoc wireless networks based on the positions of the mobile hosts. However, all these protocols are likely to fail if the transmission ranges of the mobile hosts vary due to natural or man-made obstacles or weather conditions. These protocols may fail because in routing either some connections are not considered which effectively results in disconnecting the network, or the use of some connections causes livelocks. In this paper, we describe a robust routing protocol that tolerates up to roughly 40% of variation in the transmission ranges of the mobile hosts. More precisely, our protocol guarantees message delivery in a connected adhoc network whenever the ratio of the maximum transmission range to the minimum transmission range is at most √2.