A method and nodes for providing adaptive segmentation

H - Electricity – 04 – L

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H04L 1/00 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2636011

A method and nodes for providing adaptive segmentation in a higher protocol layer interacting with a lower protocol layer. An adaptable segmentation limit (200, 204), defining a threshold of a largest Protocol Data Unit (PDU) that is to be submitted to a lower protocol layer, is deployed at a higher protocol layer interacting with the lower protocol layer. For each Service Data Unit (SDU; 201, 203) arriving at the higher protocol layer, it is determined if the respective SDU can fit into the segmentation limit or not. Each SDU that do not fit into the segmentation limit is segmented into PDUs (205, 206) which are smaller than or equal to the segmentation limit, while no segmentation is performed on SDUs that fit into the segmentation limit.

Procédé et noeuds servant à élaborer une segmentation adaptative dans une couche de protocole supérieure interagissant avec une couche de protocole inférieure. Une limite de segmentation adaptable (200, 204) définissant un seuil d'unité de données de protocole la plus importante (PDU: Protocol Data Unit) devant être soumise à une couche de protocole inférieure, est déployée au niveau d'une couche de protocole supérieure interagissant avec la couche de protocole inférieure. Pour chaque unité de données de service (SDU: Service Data Unit (201, 203), on détermine si la SDU respective peut s'intégrer dans la limite de segmentation ou non. Chaque SDU ne s'intégrant pas dans la limite de segmentation est segmentée en PDUs (205, 206) égales ou inférieures à la limite de segmentation, alors qu'aucune segmentation n'est effectuée sur les SDUs s'intégrant dans la limite de segmentation.

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