Structure and method for combining pcm and common control...

G - Physics – 06 – F

Patent

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G06F 13/42 (2006.01) H04J 3/16 (2006.01)

Patent

CA 2102439

A method for transporting common control data on a backplane bus under the SONET standard uses the section and line overhead bytes. A unit is assigned a predefined number of time slots in the STS-1 synchronous payload envelope to assert a data transmission request on a request/acknowledge bus. Each unit keeps queue and count-down counters for monitoring, respectively, the total number of pending packets in the system and the number of packets ahead of the unit's own queued transmission. This method is implemented on a PCM bus using a transmission circuit and a receiving circuit.

L'invention est une méthode de transmission de données de contrôle communes sur un bus de fond de panier selon la norme SONET qui utilise les octets de section et de surdébit. Un nombre prédéterminé de tranches de temps est affecté à une unité de l'enveloppe de charge utile synchrone STS-1 pour soutenir une demande de transmission de données sur un bus d'accusé de réception de demande. Chaque unité utilise des compteurs de file d'attente et de comptage régressif pour surveiller respectivement le nombre total des paquets en attente dans le système et le nombre de paquets en aval dans sa file d'attente de transmission. Cette méthode est réalisée sur un bus MIC utilisant un circuit d'émission et un circuit de réception.

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