INTERWORKING MANAGEMENT METHOD FOR TRANSFERRING MULTIPLE SERVICE SESSIONS BETWEEN A MOBILE NETWORK AND A WIRELESS LOCAL NETWORK, AND CORRESPONDING EQUIPMENT

摘要

A method is dedicated to managing the interworking between a WLAN and a mobile network connected to a core network comprising at least two GGSN nodes (G1, G2) respectively connected to service networks, an SGSN node (NS) connected to the mobile network and the GGSN nodes, and at least two TTG gateways (T1, T2) connected to the WLAN and to the GGSN nodes. This method consists, in the case of generation by a mobile station (MS), having established communication sessions via tunnels between the gateways (T1, T2) and the GGSN nodes (G1, G2), of a message signaling a transfer. communication sessions from the wireless LAN to the mobile network, i) to determine gateway communication identifiers (T1, T2), ii) to use an interface equipment (ED), connected to the gateways (T1, T2 ) and at the SGSN (NS) to retrieve SGSN contexts from the mobile station (MS) transfer to the identified gateways (T1, T2), and iii) to perform at the GGSN nodes (G1, G2) identified by the contexts SGSN transfer received a service PDP update to remove and / or modify tunnels, and to establish new tunnels between the mobile station (MS) and the GGSN nodes (G1, G2), through the SGSN node (NS), to ensure continuity of service during the transfer of communication sessions.