Restoration protection in communication networks

H - Electricity – 04 – J

Patent

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Details

H04J 3/08 (2006.01) H04J 3/14 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2446441

Restoration of a failed link on a network is achieved by reserving a portion of the transmission bandwidth for at least some of the links connecting nodes of the network. The reserved portion of the transmission bandwidth is used for the transmission of traffic diverted from a failed link to provide a restoration path for that diverted traffic thereby enabling a protection path to be determined dynamically. The reserved portion is preferably configured in a block so that contiguous concatenated payloads can be transmitted across the protection bandwidth.

Selon l'invention, le rétablissement d'un lien défectueux sur un réseau est réalisé par réservation d'une section de la largeur de bande de transmission pour au moins une partie des liens connectant des noeuds du réseau. La section réservée de la largeur de bande de transmission sert à la transmission de trafic dévié à partir d'un lien défectueux afin de créer un trajet de rétablissement pour le trafic dévié, un trajet de protection pouvant ainsi être déterminé dynamiquement. Ladite section réservée est de préférence configurée dans un bloc de manière que des charges utiles enchaînées adjacentes peuvent être transmises au travers de la largeur de bande de protection.

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