QoT-guaranteed protection: Survivability under physical layer impairments

Sun Il Kim, Nnamdi Nwanze, Xiaolan J. Zhang, Steven Sam Lumetta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As physical layer impairments play a large role in determining the ultimate performance of all-optical networks, it has attracted much attention. However, traditional survivability schemes have been designed and utilized without considering the quality of transmission at the physical layer. Recently, a few studies on QoT-aware (quality of transmission) protection were initiated to meet the reliability needs of future communications infrastructures. In this paper, we present a study of how transmission impairments caused by non-ideal characteristics of network components (such as amplifier spontaneous emission noise and crosstalk) affect the survivability under various QoT-aware protection schemes. We present heuristic QoT-guaranteed protection RWA for dynamic provisioning that forgoes multiple bit-error-rate calculations, and quantify the performance of various QoT-aware schemes. We also evaluate the tradeoff between using crosstalkfree Banyan switches and utilizing switch plane selection with non-crosstalk-free designs. It is expensive to provide QoT-guaranteed protection, but the usefulness of QoT-aware (nonguaranteed) schemes, while cost-effective, depends on the topology. Our results also show that QoT-unaware algorithms, while performing significantly worse in terms of blocking, can have slightly better post-failure performance.

Original languageEnglish (US)
Title of host publication5th International Conference on Broadband Communications, Networks, and Systems, BROADNETS 2008
Pages619-626
Number of pages8
DOIs
StatePublished - Dec 1 2008
Event5th International Conference on Broadband Communications, Networks, and Systems, BROADNETS 2008 - London, United Kingdom
Duration: Sep 8 2008Sep 11 2008

Publication series

Name5th International Conference on Broadband Communications, Networks, and Systems, BROADNETS 2008

Other

Other5th International Conference on Broadband Communications, Networks, and Systems, BROADNETS 2008
CountryUnited Kingdom
CityLondon
Period9/8/089/11/08

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Communication

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  • Cite this

    Kim, S. I., Nwanze, N., Zhang, X. J., & Lumetta, S. S. (2008). QoT-guaranteed protection: Survivability under physical layer impairments. In 5th International Conference on Broadband Communications, Networks, and Systems, BROADNETS 2008 (pp. 619-626). [4769152] (5th International Conference on Broadband Communications, Networks, and Systems, BROADNETS 2008). https://doi.org/10.1109/BROADNETS.2008.4769152