Adaptive and qos downlink multimedia packet scheduling for broadband wireless systems

  • Authors:
  • Seungwan Ryu;Byunghan Ryu;Hyunhwa Seo

  • Affiliations:
  • ,Deaprtment of Information Systems, Chung-Ang University, Kyungki-Do, Korea;Broadband Mobile MAC team, ETRI, Taejon, Korea;Broadband Mobile MAC team, ETRI, Taejon, Korea

  • Venue:
  • PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
  • Year:
  • 2005

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Abstract

In this paper, we propose an adaptive urgency and efficiency based packet scheduling (A-UEPS) algorithm that is to designed to maximize throughput of non-real-time (NRT) traffics as long as QoS requirements of real-time (RT) traffics such as the packet delay and the loss rate requirements are satisfied. In addition, the A-UEPS algorithm provides trade-off between performance objectives of RT and NRT traffics adaptively by adjusting scheduling precedence of packets of RT and NRT traffics in accordance with the time-varying traffic situations such as the offered traffic load and traffic mix. Simulation study shows that A-UEPS algorithm results in efficient and adaptive scheduling performance under various traffic situations.