Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2008-01-15
2008-01-15
Vu, Huy D. (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C370S222000, C370S223000, C370S225000, C370S221000, C370S351000
Reexamination Certificate
active
09812419
ABSTRACT:
A method for controlling switching in a bidirectional line-switched ring network configured by a plurality of optical fibers and a plurality of nodes, (i) having a first node receive as input an LP-S (or having the first node detect an SF-P) and having a second node adjacent to the first node across a span receive the LP-S (or receive the SF-P), and (ii) having the second node send an SF-R switch request to another node when the second node further detects an SF-R on said span under the above state (i), whereby a method for controlling switching in a bidirectional line-switched ring under conditions where ring switch and LP-S cannot co-exist, but ring switch and SF-P can, is realized, as a whole, in the ring network.
REFERENCES:
patent: 5479608 (1995-12-01), Richardson
patent: 5550805 (1996-08-01), Takatori et al.
patent: 6122250 (2000-09-01), Taniguchi
patent: 6144633 (2000-11-01), Ikeda et al.
patent: 6256292 (2001-07-01), Ellis et al.
patent: 6269452 (2001-07-01), Daruwalla et al.
patent: 6349092 (2002-02-01), Bisson et al.
patent: 6430700 (2002-08-01), Daruwalla et al.
patent: 6456587 (2002-09-01), Taniguchi
patent: 6615362 (2003-09-01), Daruwalla et al.
patent: 6625115 (2003-09-01), Ikeda et al.
patent: 6643041 (2003-11-01), Ikeda et al.
patent: 6735171 (2004-05-01), Takeguchi
patent: 6820210 (2004-11-01), Daruwalla et al.
patent: 2002/0009091 (2002-01-01), Taniguchi
patent: 0 996 309 (2000-04-01), None
patent: 09-18419 (1997-01-01), None
patent: 2000-69067 (2000-03-01), None
patent: 2000-134244 (2000-05-01), None
Notice of Reasons for Rejection dated Sep. 13, 2005 from corresponding Japanese Application 2000-300620 with translation.
Notice of Reasons for Rejection dated Sep. 13, 2005 from corresponding Japanese Application 2000-300620 with translation.
Honda Takashi
Ishii Yusuke
Ho Chuong
Katten Muchin & Rosenman LLP
Vu Huy D.
LandOfFree
Method for controlling switching in bidirectional... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for controlling switching in bidirectional..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for controlling switching in bidirectional... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3959959