Coordination of control operations in an optical network

Details Coordination of control operations in an optical network Coordination of control operations in an optical network

2006-09-28

2010-10-26

Phan, Hanh (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S083000, C398S033000, C398S177000, C398S181000, C398S160000

Reexamination Certificate

active

07822341

ABSTRACT:
In one embodiment, a control method, according to which a cascade of control messages is propagated between nodes of an optically transparent network, with each message being sent from a node to an adjacent downstream node to inform the latter about a control operation scheduled to be performed at the message-sending node and/or an upstream node that impacts an optical communication signal received at that downstream node. The cascade of control messages effectively creates an ad hoc control domain, in which control operations performed at various nodes of that domain can be coordinated to reduce unfavorable interactions between those control operations. By repeatedly propagating appropriate cascades of control messages through the network, control domains can be changed dynamically and adaptively to reflect any changes to the network topology, equipment, and/or traffic distribution.

REFERENCES:
patent: 5440418 (1995-08-01), Ishimura et al.
patent: 6023366 (2000-02-01), Kinoshita
patent: 6151148 (2000-11-01), Harano et al.
patent: 6313940 (2001-11-01), Bode et al.
patent: 6392769 (2002-05-01), Ford et al.
patent: 2006/0110159 (2006-05-01), Hurt et al.

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