Title :
Quality of service strategy in an optical packet network with multi-class frame-based scheduling
Author :
Careglio, D. ; Rafel, A. ; Pareta, J. Solé ; Spadaro, S. ; Hill, A.M. ; Junyent, G.
Author_Institution :
Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
We propose and test a novel distributed strategy for providing QoS differentiation in an optical packet metro-network with star topology, which represents a compromise between simplicity and performance. In particular, two traffic classes are considered, namely high quality, for loss-sensitive and limited delay applications, and best effort. A frame-based scheduling algorithm has been adapted to handle the two classes of traffic and is applied to arbitrate packets in a non-conflicting manner. QoS provision is delivered by a centralised scheduling algorithm and by handling switching request opportunities in the network edge nodes. A real scale network is evaluated by simulation in order to assess the merits of our solution.
Keywords :
network topology; optical fibre networks; quality of service; scheduling; telecommunication traffic; QoS differentiation; best effort; metro-network; multi-class frame-based scheduling; multi-class scheduling; optical network; optical packet network; quality of service; star topology; switching request; traffic classes; Arrayed waveguide gratings; Intelligent networks; Optical buffering; Optical fiber networks; Optical wavelength conversion; Passive optical networks; Quality of service; Scheduling algorithm; Telecommunication traffic; Traffic control;
Conference_Titel :
High Performance Switching and Routing, 2003, HPSR. Workshop on
Print_ISBN :
0-7803-7710-9
DOI :
10.1109/HPSR.2003.1226692