Title | A strict priority scheme for quality-of-service provisioning in optical burst switching networks |
Publication Type | Conference Paper |
Year of Publication | 2003 |
Authors | Kaheel, A., and H. Alnuweiri |
Conference Name | Computers and Communication, 2003. (ISCC 2003). Proceedings. 8th IEEE International Symposium on |
Pagination | 16 - 21 vol.1 |
Date Published | jun. |
Keywords | buffer-less optical burst switching networks, channel scheduling, dropping probability, end-to-end delay, IP networks, IP-over-WDM networks, optical fibre networks, preemptive latest available unused channel, preemptive prioritized just enough time, priority scheme, QoS provisioning, quality of service, quality-of-service, reservation protocol, signaling protocol, switching networks, transport protocols, void filling, wavelength division multiplexing |
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. |
URL | http://dx.doi.org/10.1109/ISCC.2003.1214095 |
DOI | 10.1109/ISCC.2003.1214095 |