On achieving short-term QoS and long-term fairness in high speed networks

  • Authors:

  • Myoung-Hun Kim;Hong-Shik Park

  • Affiliations:

  • -;Information and Communications University, 58-4, Hwaam-Dong, Yuseong-gu, Daejeon 305-732, Korea Tel.: +82 42 866 6170/ Fax: +82 42 866 6110/ E-mail: {fiaa, hspark}@icu.ac.kr

  • Venue:
  • Journal of High Speed Networks
  • Year:
  • 2004

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Abstract

We address the problem of short term QoS, caused by unexpected nature of traffic and expectation of high utilization, by using measurement based adaptive bandwidth control. We develop a short term QoS guaranteed scheduler, called short term QoS Deficit Round Robin (SQ-DRR), which adapts the allocated bandwidth to guarantee delay constraints. The major appealing aspect of the scheduler is that it guarantees delay constraint for short term aggregate burst traffic violating pre-contracted descriptors at the same time without losing long term fairness. We then evaluate the scheduler performance with and without admission control scheme under non-stationary long-range dependence traffic. The simulation results indicate that the SQ-DRR performs well in single-hop and multi-hop network under dynamic burst traffic conditions.