Collaborative Multimedia Presentations in Mobile Environments

  • Authors:

  • B. Prabhakaran

  • Affiliations:

  • Department of Computer Science, School of Computing, National University of Singapore, Singapore 119260. prabha@comp.nus.edu.sg

  • Venue:
  • Multimedia Tools and Applications
  • Year:
  • 1999

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Abstract

Distributed multimedia documents systems, distributed videoservers are examples of multimedia presentations involving collaborationamong multiple information sources. In such applications, objects have tobe retrieved from their sources and presented to users according tospecified temporal relationships. Objects retrieval in these collaborativeapplications is influenced by their presentation times, durations, andnetwork throughput available to their sources. Replication of objectsamongst the set of collaborating systems gives a choice for objectretrieval. Client going through a multimedia presentation can be in amobile environment. Here, object retrievals from collaborating servers arecarried out by base stations to which the client is attached. Mobileclient then downloads objects from the base station.In this paper, we present a graph-search based algorithm forcomputing and negotiating throughput requirements of collaboratingmultimedia presentations with replicated objects in a mobile environment.This algorithm maximizes the number of cached objects (that have alreadybeen played) for handling operations such as reverse presentation.