Scalable hybrid path computation procedure for PCE-based multi-domain WSON networks

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Title:	Scalable hybrid path computation procedure for PCE-based multi-domain WSON networks
Author:	Hernández Sola, Guillem; Perelló Muntan, Jordi; Agraz Bujan, Fernando; Spadaro, Salvatore; Comellas Colomé, Jaume; Junyent Giralt, Gabriel
Other authors:	Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla; Universitat Politècnica de Catalunya. GCO - Grup de Comunicacions Òptiques
Abstract:	In the Hierarchical Path Computation Element (H-PCE) architecture, an optimum end-to-end path is computed using a hierarchical relationship among PCEs. An H-PCE-based path computation procedure provides low network blocking probability meanwhile it results on a great amount of control overhead messages. In this paper we propose a hybrid path computation procedure based on the H-PCE architecture and the Backward Recursive PCE-Based Computation (BRPC). Extensive simulation results show that the proposed approach performs better than H-PCE in terms of network control overhead.
Abstract:	Peer Reviewed
Subject(s):	-Optical fiber communication -WSON Networks -Xarxes òptiques
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Document type:	Article - Published version Conference Object
Published by:	IEEE
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