Arq protocol with packet-based reliability level setting

H - Electricity – 04 – L

Patent

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H04L 1/18 (2006.01) H04L 1/00 (2006.01) H04L 1/16 (2006.01)

Patent

CA 2347183

A communication device and method is provided, for which, when having implementations of first protocol that specifies different reliability levels for sending PDUs of a second protocol, where the second protocol specifies segmentation of PDUs of a third, higher layer protocol, a capability is introduced for setting the reliability level of second protocol (L2_ARQ) PDUs differently for second protocol PDUs belonging to a defined data structure containing such second protocol (L2_ARQ) data units. The defined data structure can be a higher layer protocol data unit or the send window. Thereby the delay caused by retransmission of second protocol data units can be reduced significantly.

L'invention porte sur un procédé et sur un dispositif de communication, pour lequel, lorsqu'on a à faire à des mises en oeuvre d'un premier protocole qui détermine différents niveaux de fiabilité pour envoyer des unités de données de protocole (UDP) d'un second protocole, ce second protocole déterminant une segmentation des UDP d'un troisième protocole à couche supérieure, on introduit une capacité afin d'établir le niveau de fiabilité des UDP du second protocole (L2 ARQ), ce second protocole appartenant à une structure de données définie contenant des données du second protocole (L2 ARQ). La structure de données définie peut être une unité de données de protocole à couche supérieure ou la fenêtre d'envoi. Le retard dû à la retransmission du second protocole peut être ainsi considérablement réduit.

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