On the construction of 2-connected virtual backbone in wireless networks

Feng Wang, My T. Thai, Ding Zhu Du

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


Virtual backbone has been proposed as the routing infrastructure to alleviate the broadcasting storm problem in ad hoc networks. Since the nodes in the virtual backbone need to carry other node's traffic, and node and link failure are inherent in wireless networks, it is desirable that the virtual backbone is fault tolerant. In this paper, we propose a new algorithm called Connecting Dominating Set Augmentation (CDSA) to construct a 2-connected virtual backbone which can resist the failure of one wireless node. We show that CDSA has guaranteed quality by proving that the size of the CDSA constructed 2-connected backbone is within a constant factor of the optimal 2-connected virtual backbone size. Through extensive simulations, we demonstrate that in practice, CDSA can build a 2-connected virtual backbone with only small overhead.

Original languageEnglish (US)
Article number4801476
Pages (from-to)1230-1237
Number of pages8
JournalIEEE Transactions on Wireless Communications
Issue number3
StatePublished - Mar 2009


  • Dominating set
  • Fault tolerance
  • K-connectivity
  • Virtual backbone

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


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