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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 27, Iss. 19 — Oct. 1, 2009
  • pp: 4338–4347

Accounting for Shared Regenerators in GMPLS-Controlled Translucent Optical Networks

Nicola Sambo, Alessio Giorgetti, Filippo Cugini, Nicola Andriolli, Luca Valcarenghi, and Piero Castoldi

Journal of Lightwave Technology, Vol. 27, Issue 19, pp. 4338-4347 (2009)

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In translucent optical networks, the usage of sparse opto-electronic regenerators permits to overcome optical signal quality degradations. In dynamic translucent optical networks, where lightpaths are established upon request, regenerators can be effectively time shared. However, the current generalized multiprotocol label switching (GMPLS) protocol suite does not consider how to dynamically reserve and release shared regenerators and how to distribute regenerator availability information to network nodes. In this paper, four Translucent Lightpath Dynamic Provisioning (TLDP) schemes are proposed to establish lightpaths in dynamic distributed translucent optical networks. TLDP schemes differently combine the utilization of specific open shortest path first-traffic engineering (OSPF-TE) or resource reservation protocol-traffic engineering (RSVP-TE) extensions and shared regenerator availability information. Simulation results show that TLDP scheme based on OSPF-TE extensions obtains lower lightpath setup time, but higher control plane load than TLDP schemes based on RSVP-TE extensions. Moreover, schemes based on RSVP-TE extensions or on OSPF-TE extensions obtain the same lowest blocking probability.

© 2009 IEEE

Nicola Sambo, Alessio Giorgetti, Filippo Cugini, Nicola Andriolli, Luca Valcarenghi, and Piero Castoldi, "Accounting for Shared Regenerators in GMPLS-Controlled Translucent Optical Networks," J. Lightwave Technol. 27, 4338-4347 (2009)

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