Cost based data dissemination in satellite networks

  • Authors:
  • Bo Xu;Ouri Wolfson;Sam Chamberlain;Naphtali Rishe

  • Affiliations:
  • University of Illinois, Chicago;University of Illinois, Chicago;Army Research Laboratory;Florida International University, University Park, Miami, FL

  • Venue:
  • Mobile Networks and Applications
  • Year:
  • 2002

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Abstract

We consider the problem of data dissemination in a broadcast network. In contrast to previously studied models, broadcasting is among peers, rather than client server. Such a model represents, for example, satellite communication among widely distributed nodes, sensor networks, and mobile ad hoc networks. We introduce a cost model for data dissemination in peer to peer broadcast networks. The model quantifies the tradeoff between the inconsistency of the data, and its transmission cost; the transmission cost may be given in terms of dollars, energy, or bandwidth. Using the model we first determine the parameters for which eager (i.e. consistent) replication has a lower cost than lazy (i.e. inconsistent) replication. Then we introduce a lazy broadcast policy and compare it with several naive or traditional approaches to solving the problem.