H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 1/16 (2006.01) H04B 7/212 (2006.01) H04J 3/08 (2006.01) H04L 12/28 (2006.01) H04L 12/43 (2006.01) H04L 12/437 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2327069
The dynamic synchronous transfer mode dual ring topology has two rings (12, 14) with opposite fiber directions (H1, H2). The dual rings may have a plurality of common nodes (A-F). A first channel (K) may be established in a first segment extending between the first and second nodes. Tokens associated with the first channel (K) may be provided. In this way, time slots may be transmitted in the first channel (K) from the first node to the second node. If a fiber failure (U) occurs in the first segment, the second node is likely to first detect the fiber failure (U) and transmit a fiber failure message. It is then determined if the first channel (K) extends across the fiber failure (U). If the first channel is affected by the fiber failure (U) then a channel failure message is transmitted and the first channel (K) is terminated and all the tokens associated with the first segment are removed. If the first channel (K) is not affected then time slots are continued to be transmitted on the first channel (K).
La topologie en anneau double à mode de transfert synchrone dynamique a deux anneaux (12, 14) aux directions de fibres opposées (H¿1?, H¿2?). Les anneaux doubles peuvent avoir une pluralité de noeuds communs (A-F). Un premier canal (K) peut être établi dans un premier segment qui s'étend entre le premier et le deuxième noeuds. Les jetons associés au premier canal (K) peuvent être fournis. Ainsi, des créneaux temporels peuvent être transmis dans le premier canal (K) du premier au deuxième noeud. Si une défaillance de fibre (U) apparaît dans le premier segment, le deuxième noeud risque de d'abord détecter la défaillance de fibre (U) et de transmettre un message de défaillance de fibre. Ensuite, il est déterminé si le premier canal (K) s'étend à travers la défaillance de fibre (U). Si le premier canal est affecté par la défaillance de fibre (U), un message de défaillance de canal est alors transmis et le premier canal (K) est terminé et tous les jetons associés au premier segment sont enlevés. Si le premier canal (K) n'est pas affecté, alors les créneaux temporels continuent à être transmis sur le premier canal (K).
Hidell Lars Markus
Ramfelt Lars Hakan
Dennison Associates
Dynarc Inc. Doing Business As Dynamic Network Architecture Inc. In Ca
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