Dynamic Resource Allocation for Multimedia Document Retrieval over High Speed LANs

  • Authors:

  • Husni Fahmi;Shahab Baqai;Ahmed Bashandy;Arif Ghafoor

  • Affiliations:

  • Distributed Multimedia Systems Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907;Distributed Multimedia Systems Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907. Email: baqai@ecn.purdue.edu;Distributed Multimedia Systems Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907;Distributed Multimedia Systems Laboratory, School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907. Email: ghafoor@ecn.purdue.edu

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

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Abstract

The emergence of gigabit local area networks (G-LANs) hasspurred a tremendous interest in supporting networked multimediaapplications over a LAN. In this paper, we propose a mechanism fordynamically allocating network resources in asynchronous LANs.Presentation of multimedia objects with required play-out qualityrequires Quality of Service (QoS) guarantees by the underlyingnetworking infrastructure. Existing asynchronous LANs, such asEthernet, do not support the notion of QoS due to their asynchronousmedia access protocol. For such networks, we propose a dynamicbandwidth management scheme that uses the concept of Time DivisionMultiple Access (TDMA). Significant performance improvement isobserved through experimental results. In particular, thetransmission rates for multimedia hosts improve significantly withlow jitter variations in media streams. We also propose a frameworkfor graceful degradation of play-out quality of multimedia objects incase the LAN‘s total capacity is not sufficient to meet the overalldemand.