Patent
Method and apparatus for capacity-efficient restoration in an optical communication system
TLDR
In this article, a method and system for capacity-efficient restoration within an optical fiber communication system is proposed, where each optical fiber connection between nodes includes at least three channel groups with different priority levels for restoration switching in response to a connection failure.Abstract:
A method and system provide capacity-efficient restoration within an optical fiber communication system. The system includes a plurality of nodes each interconnected by optical fibers. Each optical fiber connection between nodes includes at least three channel groups with different priority levels for restoration switching in response to a connection failure. The system maintains and restores full-capacity communication services by switching at least a portion of the channel groups from a first optical fiber connection to a second optical fiber connection system based on the priority levels assigned to the channel groups. Service reliability is effectively maintained without incurring additional costs for dedicated spare optical fiber equipment by improving idle capacity utilization.read more
Citations
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Patent
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Patent
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TL;DR: In this article, methods and apparatuses for multiple redundancy schemes in an optical network are described in one embodiment, an exemplary method includes receiving a demand for allocating a first protection path that meets a first set of disjointness constraints with respect to a first working path according to the first protection scheme having a first priority.
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TL;DR: In this article, a plurality of gateway nodes are coupled to the optical ring at a boundary between neighboring subnets and operable to selectively pass and terminate wavelengths between subnets to allow wavelength reuse in the subnets, and to provide protection switching.
References
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Patent
Ring network communication structure on an optical carrier and reconfigurable node for said structure
TL;DR: In this article, the authors propose a WDM-based ring communication structure for communication on an optical carrier (3A, 3B), where a plurality of nodes (2A,..., 2E) are interconnected by means of connections comprising at least a first and a second (3B) optical carrier, such as an optical fibre.
Patent
Method and apparatus for restoring a network
TL;DR: In this article, the failure of a link is detected, with the failed link connecting an originating node with a terminating node, and an alternate path through the network is determined for the information signals using restoration and idle signals sent over the restoration channels.
Patent
System for an optical domain
TL;DR: In this paper, a transmission-based restoration system and method restoring a failure of an optical pipe within an optical domain is presented. Restoration occurs in the same domain in which the failed optical pipe is located.
Patent
Method and apparatus for over-the-air activation of neighborhood cordless-type services
TL;DR: In this paper, a method for providing local cordless service comprises the steps of receiving subscriber neighborhood zone selection input so that a mobile telephone equipped subscriber may place or receive calls for a fixed rate, for example, per month without having to pay radio frequency air time charges any time they are located within their selected subscribed-to zones.
Patent
Method and system for optical restoration tributary switching in a fiber network
TL;DR: In this article, a method and system for restoration of a fiber communication network through optical tributary switching is proposed, which is implemented in a variety of all-optical core network architectures including separate disjoint path, linkbased mesh, and path-based mesh configurations.