HDA: A hierarchical data aggregation scheme for sensor networks

  • Authors:
  • Bin Zhou;Lek Heng Ngoh;Bu Sung Lee;Cheng Peng Fu

  • Affiliations:
  • School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore;Networking Department, Institute for Infocomm Research, Singapore 119613, Singapore;School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore;School of Computer Engineering, Nanyang Technological University, Singapore 639798, Singapore

  • Venue:
  • Computer Communications
  • Year:
  • 2006

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Abstract

Sensor networks are wireless networks that can obtain and process physical world information from scattered sensor devices. Due to the limited power, slow processor, and less memory in each device, routing protocols of sensor networks must be designed carefully. Recently, a data-centric scheme called directed diffusion has been proposed to provide efficient data transmission over sensor networks. In this paper, we enhance this scheme by a hierarchical data aggregation technique (HDA). Experiments demonstrate that our enhanced scheme can save transmission energy up to 50% over directed diffusion, without any reliability or delivery efficiency being compromised. At the same time, our scheme can facilitate greater data-level aggregation in data-centric routing.