Band-based geocasting for mobile sink groups in wireless sensor networks

  • Authors:

  • Soochang Park;Seungmin Oh;Jinho Kim;Euisin Lee;Sang-Ha Kim

  • Affiliations:

  • Rutgers Center for Operations Research, Rutgers University, NJ, USA 08854;Department of Computer Engineering, Chungnam National University, Daejeon, Korea 305768;Department of Industrial and Systems Engineering, Rutgers University, NJ, USA 08854;The Department of Computer Science, University of California at Los Angeles (UCLA), CA, USA 90095;Department of Computer Engineering, Chungnam National University, Daejeon, Korea 305768

  • Venue:
  • Wireless Networks
  • Year:
  • 2013

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Abstract

This paper studies on delivery-guaranteed and effective data dissemination for mobile sink groups in wireless sensor networks. A mobile sink group denotes a set of tightly coupled mobile sinks for team collaborations such as a team of firefighters and a group of solders. The mobile sinks have a group movement feature. They thus randomly move in personal spaces as well as collectively move together as a single entity. To support such group mobility, previous studies provide circle-based protocols determining successive circular areas of a group continuously moving, and then propagate data in the areas by flooding. However, since a group is still moving during decision of each circle, they may cause asynchrony between circles and actual group positions. Eventually, it could harm reachability and energy-efficiency. We therefore propose a novel data dissemination protocol using motion properties of a mobile sink group: slowly varying and streamlike movement. By the slowly varying constraint, the protocol predictively and effectively delivers data to a group through a band of sensor nodes located in front of the streamlike trajectory of the group.