Abstract
As opposed to current SONET/SDH solutions that provide static tributary signals, modem access and metro networks require bandwidth-dynamic architectures that can efficiently handle the transmission of users’ data bursts. This paper presents the LightRing, a bandwidth-efficient multi-wavelength ring architecture that allows user to set up and tear down optical circuits on-demand. A unique distributed multi-token reservation mechanism is used in the LightRing to set up optical circuits in a contention-free manner. i.e., once initiated the reservation is always completed successfully. A tell-and-go approach is therefore possible whereby data transmission is initiated while the circuit is being set up. The LightRing’s distributed control yields fast set-up times that are below the ring round trip propagation time, fair blocking probability and high bandwidth utilization even in presence of relatively short optical bursts of data.
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© 2002 IFIP International Federation for Information Processing
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Cai, J., Fumagalli, A. (2002). Lightring: A Distributed and Contention-Free Bandwidth on-Demand Architecture. In: Jukan, A. (eds) Towards an Optical Internet. ONDM 2001. IFIP Advances in Information and Communication Technology, vol 76. Springer, New York, NY. https://doi.org/10.1007/978-0-387-35491-0_26
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DOI: https://doi.org/10.1007/978-0-387-35491-0_26
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