System and method for identifying a port

G - Physics – 06 – F

Patent

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Details

G06F 15/173 (2006.01) H04L 12/28 (2006.01) H04L 29/06 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2450906

Signal frames are formatted to include a port identifier (28) for identifying sources and/or intended recipients in a point to multi-point system. In one embodiment, a port identifier (28) is appended to the data portion of the frame (12), e.g., the protocol data unit (PDU) (30) portion of a frame (12). In another embodiment, the port identifier (28) is appended to the header portion of the frame. The system and method are particularly applicable to communications between a cable modem and cable modem (CM) termination system (CMTS) conforming to the data over cable service interface specification (DOCSIS).

Selon la présente invention, des trames de signaux sont formatées pour incorporer un identificateur de ports (28) permettant d'identifier des sources et/ou des destinataires déterminés dans un système point à multipoint. Dans un mode de réalisation, un identificateur de ports (28) est annexé à la portion de données de la trame (12), par exemple, à la portion de l'unité de données de protocole (PDU) (30) d'une trame (12). Dans un autre mode de réalisation, l'identificateur de ports (18) est annexé à la portion d'en-tête de la trame. Ce système et ce procédé sont notamment destinés aux communications entre un modem câble et un système de terminaison de modem câble s'adaptant aux données par spécification d'interface de service de communication par câble (DOCSIS).

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