Optical burst switching (OBS) - a new paradigm for an optical Internet
Journal of High Speed Networks - Special issue on optical networking
Dynamic Class Selection: From Relative Differentiation to Absolute QoS
ICNP '01 Proceedings of the Ninth International Conference on Network Protocols
Packet optical networks for high-speed TCP-IP backbones
IEEE Communications Magazine
Quality-of-service mechanisms in IP-over-WDM networks
IEEE Communications Magazine
Proportional differentiation: a scalable QoS approach
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
Lightpath (wavelength) routing in large WDM networks
IEEE Journal on Selected Areas in Communications
Control architecture in optical burst-switched WDM networks
IEEE Journal on Selected Areas in Communications
An in-band signaling protocol for optical packet switching networks
IEEE Journal on Selected Areas in Communications
QoS performance of optical burst switching in IP-over-WDM networks
IEEE Journal on Selected Areas in Communications
A case for relative differentiated services and the proportional differentiation model
IEEE Network: The Magazine of Global Internetworking
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Optical Burst Switching (OBS) has been proposed as a promising switching technology for the next generation of optical transport networks. In this paper, we address the issue of how to provide proportional differentiated services in OBS networks. Firstly, a Dynamic Wavelength Selection (DWS) scheme is introduced to provide proportional differentiated services in bufferless OBS networks by dynamically assigning more and longer periods of wavelengths to high priority classes. This scheme can also utilize wavelengths efficiently because the wavelengths are shared among different classes. Next, a Delayed Burst Assignment (DBA) scheme is introduced, by which bursts of the high priority class are given a higher probability for reserving wavelengths by scheduling the bursts of the low priority class with a delay to provide quality of service (QoS) in OBS networks. The integration of these two schemes provides proportional differentiated services and improves the burst loss performance by giving the burst head packet (BHP) two opportunities of scheduling its data burst (DB).