Rate-controlled optical burst switching

Multiplex communications – Diagnostic testing – Of a switching system

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C370S230000

Reexamination Certificate

active

10054512

ABSTRACT:
A method and apparatus are provided for low latency loss-free burst switching. Burst schedules are initiated by controllers of bufferless core nodes and distributed to respective edge nodes. In a composite-star network, the burst schedules are initiated by any of a plurality of bufferless core nodes and distributed to respective edge nodes. Burst formation takes place at source nodes and a burst size is determined according to an allocated bitrate of a burst stream to which the burst belongs. An allocated bitrate of a burst stream may be modified according to observed usage of scheduled bursts of a burst stream. A method of control-burst exchange between each of a plurality of edge nodes and each of a plurality of bufferless core nodes enables burst scheduling, time coordination, and loss-free burst switching. Both the payload bursts and control bursts are carried by optical channels connecting the edge nodes and the core nodes. A method and a circuit are provided for generating burst descriptors wherein each burst is associated with a burst stream and each burst stream is allocated a service bitrate. The generated burst descriptors are used in each master controller in each core node to create the burst schedules. In a conventional burst-scheduling process, the burst queues at a master controller of an optical switch receives burst descriptors from the source nodes and schedules the burst switching times. In a distinct departure, according to the present invention, the burst descriptors are generated by a master controller of an optical switch in a core node, the switching times of the corresponding bursts are scheduled, and the schedules are distributed to the respective edge nodes. The burst-descriptor generation is based on burst-stream bitrate-allocation defined by the source nodes.

REFERENCES:
patent: 5966346 (1999-10-01), Arai
patent: 6118762 (2000-09-01), Nomura et al.
patent: 6226327 (2001-05-01), Igarashi et al.
patent: 6405257 (2002-06-01), Gersht et al.
patent: 6529571 (2003-03-01), Gaudet
patent: 6671256 (2003-12-01), Xiong et al.
patent: 6721271 (2004-04-01), Beshai et al.
patent: 6907002 (2005-06-01), Beshai et al.
patent: 6963654 (2005-11-01), Sotme et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Rate-controlled optical burst switching does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rate-controlled optical burst switching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rate-controlled optical burst switching will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3741466

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.