Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate
2005-07-05
2005-07-05
Ho, Duc (Department: 2665)
Multiplex communications
Fault recovery
Bypass an inoperative station
C370S216000
Reexamination Certificate
active
06914880
ABSTRACT:
A method of configuring a node in an IP network by creating a set of router table entries which form a set of virtually preconfigured cyclical routes, or p-cycles, within the IP network. This set of p-cycles is virtual in the sense that the only resources which they normally consume are routing table entries. No transmission capacity is required for them, unless/until they are used to carry packets (traffic.) These p-cycles sit idle and unused until a failure takes place. The routers surrounding the failure then use these p-cycles to route packets, which normally would be lost, around the failure. A router having an entry in its router table identifying the p-cycle, together with an associated port, is also disclosed, and also a data packet that may use a p-cycle to get to its destination.
REFERENCES:
patent: 4679189 (1987-07-01), Olson et al.
patent: 4769815 (1988-09-01), Hinch et al.
patent: 5751696 (1998-05-01), Bechtel et al.
patent: 5850505 (1998-12-01), Grover et al.
patent: 5884017 (1999-03-01), Fee
patent: 6147968 (2000-11-01), De Moer et al.
patent: 6331905 (2001-12-01), Ellinas et al.
patent: 6404734 (2002-06-01), Stamatelakis et al.
patent: 6421349 (2002-07-01), Grover
patent: WO 96/21236 (1996-07-01), None
patent: WO 98/33287 (1998-07-01), None
Canadian Patent Application No. 2,161,847, published May 1, 1997, corresponding to U.S. 5,850,505, Grover et al.
Canadian Patent Application No. 2,210,207, published Jan. 11, 1999, corresponding to U.S. 6,421,349, Grover et al.
Cycle-Oriented Distributed Preconfiguration: Ring-like Speed with Mesh-like Capacity for Self-planning Network Restoration, Wayne D. Grover, Demetrios Stamatelakis, Jun. 1998, Proc. ICC'98, 7 pages.
Self-Organizing Closed Path Configruation of Restoration Capacity in Broadband Mesh Transport Networks, Wayne D. Grover, Demetrios Stamatelakis, Jun. 1998, Proc. CCBR'98, 12 pages.
Theory and Algorithms for Preconfiguration of Spare Capacity In Mesh Restorable Networks, Thesis by Demetrios Stamatelakis, Master of Science Degree, University of Alberta, Catalogued Nov., 1997, 173 pages in total.
Candian Intellectual Property Office, Examination Report for App. No. 2,269,649, Feb. 2003.
Grover Wayne D.
Stamatelakis Demetrios
Ho Duc
Telecommunications Research Laboratories
Tran Thien D
LandOfFree
Protection of routers in a telecommunications network does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protection of routers in a telecommunications network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protection of routers in a telecommunications network will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3372804