Abstract

<p><a href="http://www.osa-jon.org/features/OWC_2005.html">Feature Issue on Optical Wireless Communications (OWC)</a></p>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

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  1. S. Bloom, E. Korevaar, J. Schuster, and H.Willebrand, “Understanding the performance of freespace optics,” J. Opt. Netw. 2, 178–200 (2003), <a href="http://www.osa-jon.org/abstract. cfm?URI=JON-2-6-178">http://www.osa-jon.org/abstract. cfm?URI=JON-2-6-178</a>.
  2. H. Willebrand and B. Ghuman, "Fiber optics without fiber," IEEE Spectrum 38, 40-45 (2001).
  3. E. J. Korevaar, I. I. Kim, and B. McArthur, "Atmospheric propagation characteristics of highest importance to commercial free-space optics (invited paper)," Proc. SPIE 4976, 1-12 (2003).
  4. C. Davis, I. Smolyaninov, and S. Milner, "Flexible optical wireless links and networks," IEEE Commun. Mag. 41, 51-57 (2003).
  5. A. Kashyap, S. Khuller, and M. Shayman, "Topology control and routing over wireless optical backbone networks," presented at the 38th Annual Conference on Information Sciences and Systems, Princeton, N.J., March 2004.
  6. F. Sun and M. Shayman, "Minimum interference algorithm for integrated topology control and routing in wireless optical backbone networks," in Proceedings of IEEE International Conference on Communications (ICC'04) (IEEE, 2004).
  7. R. K. Ahuja, T. L. Magnanti, and J. B. Orlin, Network Flows: Theory, Algorithms, and Applications (Prentice Hall, 1993).
  8. B. Rothfarb, N. Shein, and I. Frisch, "Common terminal multicommodity flow," Oper. Res. 16, 202-205 (1998).
  9. Z.-H. Ho, S. D. Milner, and C. C. Davis, "Fully optical real-time pointing, acquisition and tracking system for free space optical link," in Proceedings of SPIE Photonics West, Proc. SPIE 5712, 81-92 (2005).

EEE Commun. Mag. (1)

C. Davis, I. Smolyaninov, and S. Milner, "Flexible optical wireless links and networks," IEEE Commun. Mag. 41, 51-57 (2003).

IEEE Spectrum (1)

H. Willebrand and B. Ghuman, "Fiber optics without fiber," IEEE Spectrum 38, 40-45 (2001).

J. Opt. Netw. (1)

S. Bloom, E. Korevaar, J. Schuster, and H.Willebrand, “Understanding the performance of freespace optics,” J. Opt. Netw. 2, 178–200 (2003), <a href="http://www.osa-jon.org/abstract. cfm?URI=JON-2-6-178">http://www.osa-jon.org/abstract. cfm?URI=JON-2-6-178</a>.

Oper. Res. (1)

B. Rothfarb, N. Shein, and I. Frisch, "Common terminal multicommodity flow," Oper. Res. 16, 202-205 (1998).

Proc. SPIE (1)

E. J. Korevaar, I. I. Kim, and B. McArthur, "Atmospheric propagation characteristics of highest importance to commercial free-space optics (invited paper)," Proc. SPIE 4976, 1-12 (2003).

SPIE (1)

Z.-H. Ho, S. D. Milner, and C. C. Davis, "Fully optical real-time pointing, acquisition and tracking system for free space optical link," in Proceedings of SPIE Photonics West, Proc. SPIE 5712, 81-92 (2005).

Other (3)

A. Kashyap, S. Khuller, and M. Shayman, "Topology control and routing over wireless optical backbone networks," presented at the 38th Annual Conference on Information Sciences and Systems, Princeton, N.J., March 2004.

F. Sun and M. Shayman, "Minimum interference algorithm for integrated topology control and routing in wireless optical backbone networks," in Proceedings of IEEE International Conference on Communications (ICC'04) (IEEE, 2004).

R. K. Ahuja, T. L. Magnanti, and J. B. Orlin, Network Flows: Theory, Algorithms, and Applications (Prentice Hall, 1993).

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