Title :
Performance Evaluation of Light-Tree Schemes in Flexgrid Optical Networks
Author :
Ruiz, M. ; Velasco, L.
Author_Institution :
Opt. Commun. Group (GCO), Univ. Politec. de Catalunya (UPC), Barcelona, Spain
Abstract :
New applications require conveying huge bitrate from a source node to multiple destinations. As a result, point-to-multipoint (P2MP) connections need to be established on the optical layer. In this paper, the P2MP routing and spectrum allocation (RSA) problem is formally stated and modelled as an Integer Linear Program (ILP). Exhaustive numerical results show that creating several transparent sub-trees noticeably improves the performance obtained by serving the demand using one single tree. Moreover, cost savings from exploiting traffic asymmetry can be obtained by installing directed optical transponders consisting of one single module.
Keywords :
integer programming; linear programming; optical fibre networks; performance evaluation; telecommunication network routing; telecommunication traffic; P2MP connections; P2MP routing; flexgrid optical networks; integer linear program; light-tree schemes; multiple destinations; optical transponders; performance evaluation; point-to-multipoint; spectrum allocation; traffic asymmetry; Frequency conversion; Indexes; Optical fiber networks; Optimized production technology; Resource management; Routing; Topology; Light-trees; P2MP-RSA; SBVT; flexgrid networks;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2014.2352641
