Ant-based distributed constrained steiner tree algorithm for jointly conserving energy and bounding delay in ad hoc multicast routing

  • Authors:
  • Chien-Chung Shen;Ke Li;Chaiporn Jaikaeo;Vinay Sridhara

  • Affiliations:
  • University of Delaware, Newark, DE;University of Delaware, Newark, DE;Kasetsart University, Bangkok, Thailand;Qualcomm, San Diego, CA

  • Venue:
  • ACM Transactions on Autonomous and Adaptive Systems (TAAS)
  • Year:
  • 2008

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Abstract

The minimum-energy multicast tree problem aims to construct a multicast tree rooted at the source node and spanning all the destination nodes such that the sum of transmission power at non-leaf nodes is minimized. However, aggressive power assignment at non-leaf nodes, although conserving more energy, results in multicast trees that suffer from higher hop count and jeopardizes delay-sensitive applications, signifying a clear tradeoff between energy efficiency and delay. This article formulates these issues as a constrained Steiner tree problem, and describes a distributed constrained Steiner tree algorithm, which jointly conserves energy and bounds delay for multicast routing in ad hoc networks. In particular, the proposed algorithm concurrently constructs a constrained Steiner tree, performs transmission power assignment at non-leaf nodes, and strives to minimize the sum of transmission power of non-leaf nodes, subject to the given maximum hop count constraint. Simulation results validate the effectiveness and reveal the characteristics of the proposed algorithm.