Design of tunnel-based protection schemes in multigranularity optical cross-connect networks

Tse Yu Lo*, Chien Chen, Ying Yu Chen

*Corresponding author for this work

Research output: Contribution to conferencePaper

Abstract

As the technology advances to increase the number of wavelengths in fiber links, multigranulariry 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.

Original languageEnglish
Pages336-338
Number of pages3
DOIs
StatePublished - 1 Dec 2005
Event2nd International Conference on Broadband Networks, BROADNETS 2005 - Boston, MA, United States
Duration: 3 Oct 20057 Oct 2005

Conference

Conference2nd International Conference on Broadband Networks, BROADNETS 2005
CountryUnited States
CityBoston, MA
Period3/10/057/10/05

Keywords

  • Fault-recovery
  • Multigranularity optical cross-connect (MG-OXC)
  • Optical cross-connect (OXC)
  • Protection
  • Tunnel

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    Lo, T. Y., Chen, C., & Chen, Y. Y. (2005). Design of tunnel-based protection schemes in multigranularity optical cross-connect networks. 336-338. Paper presented at 2nd International Conference on Broadband Networks, BROADNETS 2005, Boston, MA, United States. https://doi.org/10.1109/ICBN.2005.1589631