Science China Information Sciences

, Volume 56, Issue 7, pp 1–9

A topology control algorithm based on D-region fault tolerance

Authors

    • Department of Electronic EngineeringTsinghua University
    • Deparment of Applied MathematicsHarbin University of Science and Technology
  • Yue Wang
    • Department of Electronic EngineeringTsinghua University
  • Jian Yuan
    • Department of Electronic EngineeringTsinghua University
  • XiuMing Shan
    • Department of Electronic EngineeringTsinghua University
  • Yong Ren
    • Department of Electronic EngineeringTsinghua University
Research Paper

DOI: 10.1007/s11432-012-4652-1

Cite this article as:
Sun, R., Wang, Y., Yuan, J. et al. Sci. China Inf. Sci. (2013) 56: 1. doi:10.1007/s11432-012-4652-1

Abstract

In a wireless network, node failure due to either natural disasters or human intervention can cause network partitioning and other communication problems. For this reason, a wireless network should be fault tolerant. At present, most researchers use k-connectivity to measure fault tolerance, which requires the network to be connected after the failure of any up to k-1 nodes. However, wireless network node failures are usually spatially related, and particularly in military applications, nodes from the same limited area can fail together. As a metric of fault-tolerance, k-connectivity fails to capture the spatial relativity of faults and hardly satisfies the fault tolerance requirements of a wireless network design. In this paper, a new metric of fault-tolerance, termed D-region fault tolerance, is introduced to measure wireless network fault tolerance. A D-region fault tolerant network means that even after all the nodes have failed in a circular region with diameter D, it still remains connected. Based on D-region fault tolerance, we propose two fault-tolerant topology control algorithms—the global region fault tolerance algorithm (GRFT) and the localized region fault tolerance algorithm (LRFT). It is theoretically proven that both algorithms are able to generate a network with D-region fault tolerance. Simulation results indicate that with the same fault tolerance capabilities, networks based on both GRFT and LRFT algorithms have a lower transmission radius and lower logical degree.

Keywords

fault toleranceconnectivityspatial relativitytopology control
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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2012