QEM: A Scheduling Method for Wireless Broadcast Data

  • Authors:
  • Yon Dohn Chung;Myoung-Ho Kim

  • Affiliations:
  • -;-

  • Venue:
  • DASFAA '99 Proceedings of the Sixth International Conference on Database Systems for Advanced Applications
  • Year:
  • 1999

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Abstract

In mobile distributed systems the data on air can be accessed by a large number of clients. This paper describes the way clients access the wireless broadcast data in short latency. We define and analyze the problem of wireless data scheduling. And we propose a measure, named QueryDistance(QD), which represents the degree of coherence for the data set accessed by a query. We give a practically usable method named QEM which constructs the broadcast schedule by expanding each query's data set in greedy way. We also evaluate the performance of our method by experiments.