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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editor: Richard A. Linke
  • Vol. 4, Iss. 7 — Jul. 1, 2005
  • pp: 391–399

Availability-differentiated service provisioning in free-space optical access networks

Xi Yang  »View Author Affiliations

Journal of Optical Networking, Vol. 4, Issue 7, pp. 391-399 (2005)

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Feature Issue on Optical Wireless Communications (OWC)

Weather conditions have a significant impact on availability of free-space optical (FSO) access networks. Under fair weather conditions, such networks can use long-range FSO links that span over 1 km. Under severe weather conditions, e.g., dense fog, only the short-range FSO links in the range of 200–400m remain operational. We propose an availability-differentiated networking scheme that supports two classes of service availability in an FSO network consisting of both long-range and short-range FSO links. Under severe weather conditions, the network topology is reconfigured to use only the short-range FSO links. Owing to the reduced network capacity in the reconfigured network, lower-availability services (LAS) will be preempted by higher-availability services (HAS). LAS and HAS have different revenue values. Given a set of hybrid LAS and HAS requests, we maximize the total revenue of LAS + HAS by selectively provisioning a portion of the service requests in the FSO access network. We formulate the problem into a common terminal multicommodity problem and develop an optimal algorithm to solve this problem in polynomial time.

© 2005 Optical Society of America

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Optical Wireless Communications

Original Manuscript: February 1, 2005
Revised Manuscript: February 1, 2005
Published: June 29, 2005

Virtual Issues
Optical Wireless Communications (2005) Journal of Optical Networking

Xi Yang, "Availability-differentiated service provisioning in free-space optical access networks," J. Opt. Netw. 4, 391-399 (2005)

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