Multicast routing with minimum energy cost and minimum delay in wireless sensor networks

  • Authors:
  • Zhao Li;Wei Zhang;Hengchang Liu;Baohua Zhao;Yugui Qu

  • Affiliations:
  • Department of Computer Science, Laboratory of Computer Science Institute of Software Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui, China;Department of Computer Science, Laboratory of Computer Science Institute of Software Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui, China;Department of Computer Science, Laboratory of Computer Science Institute of Software Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui, China;Department of Computer Science, Laboratory of Computer Science Institute of Software Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui, China;Department of Computer Science, Laboratory of Computer Science Institute of Software Chinese Academy of Sciences, University of Science and Technology of China, Hefei, Anhui, China

  • Venue:
  • EUC'05 Proceedings of the 2005 international conference on Embedded and Ubiquitous Computing
  • Year:
  • 2005

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Abstract

In this paper, we consider the multicast routing with minimum energy cost and minimum delay (MEMD) in wireless sensor networks under the access control scheme of Spatial Time Division Multiple Access (STDMA). We formulate and explore both MEMD multicast and ME multicast, and show that the latter is just the Maximum Leaf Spanning Tree (MLST) problem, which is NP-complete. A 2-approximation algorithm is proposed for the MLST problem through improving a known one. Based on this algorithm, an approximation algorithm is obtained for the MEMD multicast problem. To further improve the delay result, we provide another approximation algorithm for our main problem using a different approach. These algorithms are all near linear in the size of the network graph, and also are shown to have good performance by simulation results.