Design and performance evaluation of broadcast algorithms for time-constrained data retrieval

Yu Chi Chung, Chiang Lee

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


We refer “time-constrained services” to those requests that have to be replied to within a certain client-expected time duration. If the answer cannot reach the client within this expected time, the value of the information may seriously degrade or even become useless. On-demand channels may not be able to handle all time-constrained services without degrading the performance. How to handle these services in broadcast channels becomes crucial to balance the load of wireless systems. In this paper, we study this problem and find the minimum number of broadcast channels required for such a task. Also, we propose solutions for this problem when the available channels are insufficient. Our performance result reveals that only a moderate number of channels is required to promote these time-constrained services.

Original languageEnglish
Pages (from-to)1526-1543
Number of pages18
JournalIEEE Transactions on Knowledge and Data Engineering
Issue number11
Publication statusPublished - 2006 Nov

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Science Applications
  • Computational Theory and Mathematics


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