A strict priority scheme for quality-of-service provisioning in optical burst switching networks Conference Paper uri icon

abstract

  • Classical approaches to quality-of-service (QoS) provisioning in IP networks are difficult to apply in all-optical networks. This is mainly because there is no optical counterpart to the store-and-forward model that mandates the use of buffers for queuing packets during contention for bandwidth in electronic packet switches. Since plain IP assumes a best effort service model, there is a need to devise mechanisms for QoS provisioning in IP over wavelength-division-multiplexing, or IP-over-WDM, networks. In this paper, we propose a new scheme; called preemptive prioritized just enough time (PPJET), for QoS provisioning in buffer-less optical burst switching (OBS) networks. PPJET provides strict priority for high priority traffic by dropping reservations belonging to lower priority traffic using a new channel scheduling algorithm called preemptive latest available unused channel with void filling (PLAUC-VF). Furthermore, we study the performance of PPJET through simulation experiments, and we show that PPJET outperforms prioritized just enough time (PJET) in terms of dropping probability and end-to-end delay. 2003 IEEE.

name of conference

  • Proceedings of the Eighth IEEE Symposium on Computers and Communications. ISCC 2003

published proceedings

  • EIGHTH IEEE INTERNATIONAL SYMPOSIUM ON COMPUTERS AND COMMUNICATION, VOLS I AND II, PROCEEDINGS

author list (cited authors)

  • Kaheel, A., & Alnuweiri, H.

citation count

  • 22

complete list of authors

  • Kaheel, A||Alnuweiri, H

publication date

  • January 2003