Extending mobility to publish/subscribe systems using a pro-active caching approach

  • Authors:

  • Abdulbaset Gaddah;Thomas Kunz

  • Affiliations:

  • Department of Systems and Computer Engineering, Carleton University, Ottawa, Canada;(Correspd. Tel.: +1 613 520 3573/ Fax: +1 613 520 5727/ E-mail: tkunz@sce.carleton.ca) Department of Systems and Computer Engineering, Carleton University, Ottawa, Canada

  • Venue:
  • Mobile Information Systems
  • Year:
  • 2010

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Abstract

The publish/subscribe communication paradigm has many characteristics that lend themselves well to mobile wireless networks. Our research investigates the extension of current publish/subscribe systems to support subscriber mobility in such networks. We present a novel mobility management scheme based on a pro-active caching approach to overcome the challenges and the performance concerns of disconnected operations in publish/subscribe systems. We discuss the mechanism of our proposed scheme and present a comprehensive experimental evaluation of our approach and alternative state-of-the-art solutions based on reactive approaches and durable subscriptions. The obtained results illustrate significant performance benefits of our proposed scheme across a range of scenarios. We conclude our work by discussing a modeling approach that can be used to extrapolate the performance of our approach in a near-size environment (in terms of broker network and/or subscriber population) to our experimental testbed.