Adaptive location updates for mobile sinks in wireless sensor networks

  • Authors:
  • Guojun Wang;Tian Wang;Weijia Jia;Minyi Guo;Jie Li

  • Affiliations:
  • School of Information Science and Engineering, Central South University, Changsha, China 410083;Department of Computer Science, City University of Hong Kong, Kowloon, Hong Kong;Department of Computer Science, City University of Hong Kong, Kowloon, Hong Kong;Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai, China 200030;Graduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba Science City, Japan Ibaraki 305-8573

  • Venue:
  • The Journal of Supercomputing
  • Year:
  • 2009

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Abstract

Mobile sinks can be used to balance energy consumption for sensor nodes in Wireless Sensor Networks (WSNs). Mobile sinks are required to inform sensor nodes about their new location information whenever necessary. However, frequent location updates from mobile sinks can lead to both rapid energy consumption of sensor nodes and increased collisions in wireless transmissions. We propose a new solution with adaptive location updates for mobile sinks to resolve this problem. When a sink moves, it only needs to broadcast its location information within a local area other than among the entire network. Both theoretical analysis and simulation studies show that this solution consumes less energy in each sensor node and also decreases collisions in wireless transmissions, which can be used in large-scale WSNs.