Cross-layer quality of service for video wireless multimedia delivery: some challenges and principles

  • Authors:
  • Zoran Bojkovic;Dragorad Milovanovic

  • Affiliations:
  • Faculty of Transport and Traffic Engineering, University of Belgrade, Belgrade;Faculty of Electrical Engineering, University of Belgrade, Belgrade, Serbia

  • Venue:
  • DNCOCO'06 Proceedings of the 5th WSEAS international conference on Data networks, communications and computers
  • Year:
  • 2006

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Abstract

Providing cross-layer quality of service (QoS) for wireless multimedia delivery is challenging task which has attracted intensive research over the years. A fundamental problem in this area is how to map QoS criterion at different layers and optimum QoS across the layers. We present end-to-end QoS architecture for multimedia delivery as well as QoS metrics over wireless links together with channel model and QoS evolution. Then, we invoke a cross-layer design for multimedia scheduling at the data link layer, with each user employing adaptive modulation and coding (AMC) at the physical layer. The cross layer design provides low-complexity implementation and analysis as well as service isolation and scalability. Also, the QoS of a certain user in terms of its throughput, packet bit rate and average delay for a given bandwidth allocation is provided.