DocumentCode :
3183635
Title :
Design of tunnel-based protection schemes in multigranularity optical cross-connect networks
Author :
Lo, Tse Yu ; Chen, Chien ; Chen, Ying Yu
Author_Institution :
Dept. of Comput. & Inf. Sci., Nat. Chiao Tung Univ., Taiwan
fYear :
2005
fDate :
3-7 Oct. 2005
Firstpage :
313
Abstract :
As the technology advances to increase the number of wavelengths in fiber links, multigranularity optical cross-connects (MG-OXCs) have emerged as a solution to reduce the manufacturing cost of the traditional optical cross-connects (OXCs). In this paper, we aim to provide an efficient fault-recovery protection scheme for the lightpaths in the MG-OXC networks. A segment-based protection scheme, called tunnel based segment protection (TSP) is proposed to recover the communications interrupted by a fiber cut. TSP first allocates all the tunnels off-line according to the historical traffic matrix and then starts to serve the incoming requests. When allocating a tunnel, a backup tunnel is always allocated as well. Consequently, a lightpath is naturally divided into segments according to the switching types along the path. Therefore, after a working path is found for a connection request, only a shared backup path for those segments in the corresponding wavelength-switching layers need to be found. In addition, TSP utilizes wavelength-switching ports efficiently since working and backup tunnels can share the same wavelength-switching ports at two ends of the tunnel. Simulation results show that the network performance is improved comparing to adapt a straightforward path protection scheme for MG-OXC networks.
Keywords :
failure analysis; matrix algebra; optical fibre networks; photonic switching systems; telecommunication traffic; MG-OXC network; TSP; connection request; fault-recovery protection scheme; multigranularity optical cross-connect; optical fibre link; optical lightpath; traffic matrix; tunnel based segment protection; wavelength-switching port; Computer aided manufacturing; Costs; Intelligent networks; Optical design; Optical fiber networks; Optical network units; Protection; Switches; Telecommunication traffic; Wavelength division multiplexing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Broadband Networks, 2005. BroadNets 2005. 2nd International Conference on
Print_ISBN :
0-7803-9276-0
Type :
conf
DOI :
10.1109/ICBN.2005.1589631
Filename :
1589631
Link To Document :
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