An optimization based distributed algorithm for mobile data gathering in wireless sensor networks

  • Authors:
  • Miao Zhao;Yuanyuan Yang

  • Affiliations:
  • Department of Electrical and Computer Engineering, New York State Center of Excellence in Wireless and Information Technology, Stony Brook University, Stony Brook, NY;Department of Electrical and Computer Engineering, New York State Center of Excellence in Wireless and Information Technology, Stony Brook University, Stony Brook, NY

  • Venue:
  • INFOCOM'10 Proceedings of the 29th conference on Information communications
  • Year:
  • 2010

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Abstract

Recent advances have shown a great potential of anchor based mobile data gathering in wireless sensor networks. In such a scheme, during each periodic data gathering tour, the mobile collector stays at each anchor point for a period of sojourn time and collects data from nearby sensors via multi-hop communications. We provide an optimization based distributed algorithm for such data gathering in this paper. We adopt network utility, which is a properly defined function, to characterize the data gathering performance, and formalize the problem as a network utility maximization problem under the constraint of guaranteed network lifetime. To efficiently solve the problem, we decompose it into two sets of subproblems and solve them in a distributed manner, which facilitates the scalable implementations. Finally, we provide numerical results to demonstrate the convergence of the proposed distributed algorithm.