Paper Info
Title
Preemption window mechanism for efficient QoS support in E-OBS network architecture
Abstract
This paper focuses on the problem of quality of service (QoS) provisioning in optical burst switching (OBS) networks. OBS is a promising photonic network technology aiming at efficient transport of IP traffic by means of statistical multiplexing. The lack of optical memories, however, makes this operation quite complicated. Problems such as unfairness in access to the shared transmission resources, facility in adopting alternative and backup routing, scheduling complexity and so on arise in the conventional OBS architecture. In this paper we proposed the offset-time emulated OBS (E-OBS) architecture, which overcomes all these drawbacks by means of distributed provisioning of the offset time in core nodes. Nonetheless it is still difficult to guarantee a certain level of service quality. Burst preemption mechanism, which, alongside with offset-time differentiation, was proven to be the most effective technique for QoS provisioning in OBS networks. The general drawback of any burst preemption-based mechanism is that, in case of successful preemption, either the resources reserved for the preempted bursts on outgoing path are wasted or an additional signaling procedure should be carried out in order to release them. In order to avoid wasted resources reservation, we also proposed the preemption Window (PW) mechanism which enhances the E-OBS for efficient QoS support. In this paper we evaluate exhaustively the performance of the resulting architecture showing all its advantageous with respect to other solutions.
Year
DOI
Venue
2008
10.1109/BROADNETS.2008.4769057
BROADNETS
Keywords
Field
DocType
IP networks,optical burst switching,optical fibre networks,quality of service,scheduling,statistical multiplexing,telecommunication network routing,telecommunication traffic,IP traffic,QoS support,emulated optical burst switching,network routing,offset-time E-OBS network architecture,photonic network technology,preemption window mechanism,quality-of-service,scheduling,signaling procedure,statistical multiplexing
Preemption,Optical burst switching,Computer science,Scheduling (computing),Network architecture,Quality of service,Computer network,Provisioning,Statistical time division multiplexing,Internet traffic,Distributed computing
Conference
ISBN
Citations 
PageRank 
978-1-4244-2392-7
0
0.34
References 
Authors
5
3
Name
Order
Citations
PageRank
Davide Careglio141844.52
Miroslaw Klinkowski221023.76
Josep Solé-pareta343658.67