| US 7,616,891 B2 | ||
| System and method for transmission and reception of traffic in optical light-trails | ||
| Paparao Palacharla, Richardson, Tex. (US); Ashwin Anil Gumaste, Dallas, Tex. (US); and Susumu Kinoshita, Plano, Tex. (US) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Mar. 30, 2005, as Appl. No. 11/95,246. | ||
| Prior Publication US 2006/0228112 A1, Oct. 12, 2006 | ||
| Int. Cl. H04J 14/02 (2006.01) | ||
| U.S. Cl. 398—68 [398/31] | 33 Claims |
| 1. An optical network operable to carry optical traffic in a plurality of multiplexed wavelengths between a plurality of nodes,
the optical network comprising:
at least one light-trail established in the optical network between a convener node and an end node, wherein the light-trail
couples the convener node, one or more intervening nodes, and the end node and is associated with one of the plurality of
wavelengths;
an out-of-band control channel associated with a different wavelength than the wavelength associated with the at least one
light-trail, the control channel being used to communicate one or more control messages to establish the light-trail and to
allocate use of the light-trail by the convener node and the intervening nodes; and
wherein each of the convener node and the intervening nodes comprises a burstponder operable to:
receive data traffic from one or more client devices of the associated node to be communicated over the light-trail;
buffer the received data traffic in one or more queues and assemble the data traffic into an optical payload;
report the queue status of the one or more queues to a bandwidth controller associated with the out-of-band control channel
such that the bandwidth controller can allocate use of the light-trail using, as least in part, the queue status; and
transmit the optical payload over the light-trail as optical traffic using a burst mode transmitter during a time period in
which the associated node is allocated use of the light-trail.
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