H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 29/06 (2006.01) H04Q 7/38 (2006.01) H04Q 7/22 (2006.01)
Patent
CA 2408993
The invention relates to a method for transferring a tunnel from a first operating node (SGSN1) of a mobile radio communication system, especially a GPRS system, to a second operating node (SGSN2). The mobile radio communication system comprises operating nodes (SGSN1, SGSN2) and a gateway node (GGSN), at least one of these nodes being a node according to version 0 of the GTP protocol, and others being nodes according to version 1 of the GTP protocol. When the first operating node (SGSN1) is the node according to version 0, the request to adapt the context contains IMSI and NSAPI information of the tunnel concerned in order to correctly transfer said tunnel. If the second operating node (SGSN2) or the gateway node (GGSN) is a node according to version 0, the first operating node (SGSN1) allocates a flow label to the context, and the second operating node (SGSN2) sends the request to adapt the context of the tunnel concerned along with said allocated flow label.
L'invention concerne un procédé de transfert d un tunnel d'un premier noeud de commande (SGSN1) d'un système de radiocommunication mobile, notamment d'un système GPRS, à un deuxième noeud de commande (SGSN2). Le système de radiocommunication mobile présente des noeuds de commande (SGSN1, SGSN2) et un noeud passerelle (GGSN), au moins un noeud étant un noeud d'après la version 0 du protocole GTP et d'autres noeud étant des noeuds d'après la version 1 du protocole GTP. Pour obtenir, en l'occurrence, un transfert correct du tunnel, le premier noeud de commande (SGSN1) est le noeud d'après la version 0 et l'exigence d'adaptation du contexte est une indication de IMSI et de NSAPI du tunnel concerné. Lorsque le deuxième noeud de commande (SGSN2) ou le noeud passerelle (GGSN) est un noeud d'après la version 0, le premier noeud de commande (SGSN1) affecte au contexte une étiquette de flux, et le deuxième noeud de commande (SGSN2) envoie l'exigence d'adaptation du contexte relatif au tunnel avec ajout de cette étiquette de flux affectée.
Aktiengesellschaft Siemens
Nokia Siemens Networks Gmbh & Co. Kg
Sim & Mcburney
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