Title :
Optical signal-to-noise ratio restoration algorithm applied to optical network resilience to node failures
Author :
De Freitas, Rodrigo C. ; Martins-Filho, Joaquim F. ; Chaves, Daniel A R ; Silva, Rodrigo C L ; Bastos-Filho, Carmelo J A ; Pereira, Helder A. ; Leitao, Edluce Dos S
Author_Institution :
Dept. of Electron. & Syst., Fed. Univ. of Pernambuco (UFPE), Recife, Brazil
Abstract :
In this paper we propose a novel algorithm to restore calls upon node failure in all-optical networks. Our proposal aims to restore the maximum of lightpaths disrupted by each node failure. The algorithm performs a path restoration looking for the route that presents the higher optical signal-to-noise ratio (OSNR). We compared our proposal to three other well known approaches in the literature. We observed that our proposal obtained lower failure rates in the restoration process for three different studied scenarios considering several physical layer impairments.
Keywords :
optical fibre networks; telecommunication network reliability; telecommunication network routing; all optical network; node failures; optical network resilience; optical signal-to-noise ratio restoration algorithm; path restoration; physical layer impairment; All-optical networks; Optical noise; Physical layer; Proposals; Signal to noise ratio; Topology;
Conference_Titel :
Communications (LATINCOM), 2011 IEEE Latin-American Conference on
Conference_Location :
Belem do Para
Print_ISBN :
978-1-4673-0277-7
DOI :
10.1109/LatinCOM.2011.6107408
