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An optimization framework for traffic restoration in optical wireless networks with partial link failures

Fouquet, Yoann; Nace, Dritan; Pióro, Michał LU and Poss, Michael (2017) In Optical Switching and Networking 23. p.108-117
Abstract

In the paper we introduce an optimization framework for traffic restoration in optical wireless networks. As such networks experience multiple partial link failures, we introduce a generic extension of restoration strategies developed for wired networks (that assume total link failures) which enables handling partial link failures as well. The particular traffic restoration strategy studied in the paper combines a known rerouting method for total link failures (Restricted Restoration – RR) and a recently developed restoration method for partial failures (Flow Thinning – FT). The paper presents a generic optimization model for link dimensioning for arbitrary sets of failure states, and its specific version that assumes the above... (More)

In the paper we introduce an optimization framework for traffic restoration in optical wireless networks. As such networks experience multiple partial link failures, we introduce a generic extension of restoration strategies developed for wired networks (that assume total link failures) which enables handling partial link failures as well. The particular traffic restoration strategy studied in the paper combines a known rerouting method for total link failures (Restricted Restoration – RR) and a recently developed restoration method for partial failures (Flow Thinning – FT). The paper presents a generic optimization model for link dimensioning for arbitrary sets of failure states, and its specific version that assumes the above described RR/FT strategy. For the RR/FT case, an exact solution method based on path generation is described, together with numerical results illustrating its efficiency. Next, the paper describes how the generic optimization model can be used for the FSO networks. The specific features of the failures observed in such networks (FSO is highly sensitive to atmospheric conditions) imply the necessity of treating the dimensioning problem in its chance constrained programming version which is NP-hard by its very nature. For that we have developed an iterative heuristic scheme that makes use of the exact solution method developed for the generic case. Numerical results illustrating the so-obtained robust solutions of the dimensioning problem are also reported.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Fiber wireless networks, Partial link failures, Survivability, Traffic restoration
in
Optical Switching and Networking
volume
23
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:84979662866
  • wos:000390966900004
ISSN
1573-4277
DOI
10.1016/j.osn.2016.06.006
language
English
LU publication?
yes
id
a398cdad-d212-441e-aa50-ad06de237eb1
date added to LUP
2017-02-13 15:21:18
date last changed
2018-03-12 20:56:46
@article{a398cdad-d212-441e-aa50-ad06de237eb1,
  abstract     = {<p>In the paper we introduce an optimization framework for traffic restoration in optical wireless networks. As such networks experience multiple partial link failures, we introduce a generic extension of restoration strategies developed for wired networks (that assume total link failures) which enables handling partial link failures as well. The particular traffic restoration strategy studied in the paper combines a known rerouting method for total link failures (Restricted Restoration – RR) and a recently developed restoration method for partial failures (Flow Thinning – FT). The paper presents a generic optimization model for link dimensioning for arbitrary sets of failure states, and its specific version that assumes the above described RR/FT strategy. For the RR/FT case, an exact solution method based on path generation is described, together with numerical results illustrating its efficiency. Next, the paper describes how the generic optimization model can be used for the FSO networks. The specific features of the failures observed in such networks (FSO is highly sensitive to atmospheric conditions) imply the necessity of treating the dimensioning problem in its chance constrained programming version which is NP-hard by its very nature. For that we have developed an iterative heuristic scheme that makes use of the exact solution method developed for the generic case. Numerical results illustrating the so-obtained robust solutions of the dimensioning problem are also reported.</p>},
  author       = {Fouquet, Yoann and Nace, Dritan and Pióro, Michał and Poss, Michael},
  issn         = {1573-4277},
  keyword      = {Fiber wireless networks,Partial link failures,Survivability,Traffic restoration},
  language     = {eng},
  month        = {01},
  pages        = {108--117},
  publisher    = {Elsevier},
  series       = {Optical Switching and Networking},
  title        = {An optimization framework for traffic restoration in optical wireless networks with partial link failures},
  url          = {http://dx.doi.org/10.1016/j.osn.2016.06.006},
  volume       = {23},
  year         = {2017},
}