Approximation Algorithm for Minimum Weight (k, m)-CDS Problem in Unit Disk Graph

  title={Approximation Algorithm for Minimum Weight (k, m)-CDS Problem in Unit Disk Graph},
  author={Yishuo Shi and Zhao Zhang and Dingzhu Du},
In a wireless sensor network, the virtual backbone plays an important role. Due to accidental damage or energy depletion, it is desirable that the virtual backbone is fault-tolerant. A fault-tolerant virtual backbone can be modeled as a k-connected m-fold dominating set ((k,m)-CDS for short). In this paper, we present a constant approximation algorithm for the minimum weight (k,m)-CDS problem in unit disk graph under the assumption thatm ≥ k. Prior to this work, constant approximation… CONTINUE READING


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