Optimal fault-tolerant broadcasting in wireless mesh networks

  • Authors:

  • Qin Xin;Yan Zhang;Laurence T. Yang

  • Affiliations:

  • Networks and Distributed Systems Group, Simula Research Laboratory, Oslo, Norway;Networks and Distributed Systems Group, Simula Research Laboratory, Oslo, Norway;Department of Computer Science, St. Francis Xavier University, Antigonish, NS, Canada

  • Venue:
  • Wireless Communications & Mobile Computing
  • Year:
  • 2011

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Abstract

Wireless mesh networks (WMNs) is an emerging communication paradigm to enable resilient, cost-efficient and reliable services for the future-generation wireless networks. In this paper, we study the broadcasting (one-to-all communication) in WMNs with known topology, i.e. where for each primitive the schedule of transmissions is pre-computed based on full knowledge about the size and the topology of the network. We show that broadcasting can complete in D + O(log n) time units in the WMN with size n and diameter D. Moreover, we also propose an optimal O(D)-time deterministic energy efficient broadcasting scheduling, under which each node in the WMN is only allowed to transmit at most once. Furthermore, we explore the fault-tolerant broadcasting in the WMN. We show an O(n)-time deterministic broadcasting schedule with large number of link failures. This is an optimal schedule in the sense that there exists a network topology in which the broadcasting cannot complete in less than Ω(n) units of time. Copyright © 2009 John Wiley & Sons, Ltd.