Message piggybacking during transport medium congestion

H - Electricity – 04 – Q

Patent

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Details

H04Q 11/04 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2385470

A computer (30(1)) detects congestion (50, 80) on a network transport medium (32) and in response thereto refrains from sending any packets containing messages. These to be transmitted messages are instead stored (56, 84) by the computer in memory (40). In one embodiment, each message addressed to the same destination addressee computer is stored (84) in a common buffer (38), with a different buffer being allocated to each identified destination addressee computer (30(2) and 30(3)) for the to be transmitted messages. In another embodiment, each such message is encapsulated (54) into a single packet (36) that is stored (56) in the reserved portion. When the congestion condition on the transport medium subsides (58, 86), the one or more messages stored within a given buffer are retrieved from memory and encapsulated (104) within a single packet (36) addressed to the destination addressee computer associated with that given buffer. Alternatively, the stored single packet is retrieved from memory. That single packet is then sent (76, 106) over the transport medium to the identified destination addressee computer.

Un ordinateur (30(1)) détecte une congestion (50, 80) dans un support de transport du réseau (32) et, en réponse à la congestion, s'abstient d'envoyer des paquets contenant des messages. Les messages à transmettre sont stockés (56, 84) par l'ordinateur dans la mémoire (40). Dans un mode de réalisation, chaque message adressé au même ordinateur destinataire est stocké (84) dans un tampon commun (38), et un tampon différent est attribué à chaque ordinateur destinataire à destination identifiée (30(2) et 30(3)) pour les messages à transmettre. Dans un autre mode de réalisation, chacun de ces messages est encapsulé (54) dans un paquet isolé (36), qui est stocké (56) dans la partie réservée. Si la congestion (58, 86) dans un support de transport persiste, le ou les messages stockés dans un tampon donné sont récupérés dans la mémoire et encapsulés (104) dans un paquet isolé (36) adressé à l'ordinateur destinataire associé à ce tampon. En variante, le paquet isolé stocké est récupéré depuis la mémoire puis envoyé (47, 106) au moyen du support de transport à l'ordinateur destinataire identifié.

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