Distributed slot synchronization (DSS): a network-wide slot synchronization technique for packet-switched optical networks

Distributed slot synchronization (DSS) is a network-wide packet synchronization technique which coordinates node transmissions so that packets arrive aligned to one another at a reference point in the network, independent of propagation delays. DSS was developed for use in the contention resolution...

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Bibliographic Details
Published in:Journal of lightwave technology 1998-12, Vol.16 (12), p.2109-2116
Main Authors: Hofmeister, R.T., Chung-Li Lu, Min-Chen Ho, Poggiolini, P., Kazovsky, L.G.
Format: Article
Language:English
Subjects:
Control systems
Decision support systems
Logic
Optical fiber networks
Optical noise
Optical packet switching
Propagation delay
Testing
Wavelength division multiplexing
WDM networks
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Summary:Distributed slot synchronization (DSS) is a network-wide packet synchronization technique which coordinates node transmissions so that packets arrive aligned to one another at a reference point in the network, independent of propagation delays. DSS was developed for use in the contention resolution with delay-lines (CORD) project, a DARPA-funded 2.5 Gb/s//spl lambda/, wavelength division multiplexer (WDM) optical packet-switched network testbed. In this implementation, it was experimentally demonstrated that the DSS system, operating with 80 MHz control logic, achieves a packet arrival jitter of less than 13 ns with 12 km node spacings. DSS was also shown to be robust against noise and node failure or fiber breaks. The technique is data rate and format independent and can be used in other star, extended ring, or tree-and-branch network architectures for metropolitan area network (MAN) and access applications.
ISSN:0733-8724
1558-2213
DOI:10.1109/50.736579