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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.
CitationHernández-Sola, G. [et al.]. Scalable hybrid path computation procedure for PCE-based multi-domain WSON networks. A: International Conference on Transparent Optical Networks. "2011 13th International Conference on Transparent Optical Networks". Stockholm: IEEE, 2011, p. 1-4.
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