Method of managing interworking for the transfer of multiple service between a mobile network and a wireless local area network, and the corresponding equipment

摘要

A method is dedicated to managing interworking between a WLAN network and a mobile network both connected to a core network comprising at least two GGSN nodes (G1, G2) connected to respective service networks, an SGSN node (NS) connected to the mobile network and to the GGSN nodes, and at least two tunnel termination gateways (T1, T2) connected to the WLAN network and to the GGSN nodes. In case of generation by a mobile station (MS), having set up communication sessions via tunnels between the gateways (T1, T2) and the GGSN nodes (G1, G2), of a message reporting a transfer of the communication sessions from the wireless local area network to the mobile network, the method consists in i) determining communication identifiers of the gateways (T1, T2), ii) using an interface equipment (ED), connected to the gateways (T1, T2) and to the SGSN node (NS) to recover transfer SGSN contexts of the mobile station (MS) from the identified gateways (T1, T2), and iii) at the GGSN nodes (G1, G2) identified by the received transfer SGSN contexts, updating service PDP contexts intended to eliminate an/or modify the tunnels, and establishing new tunnels between the mobile station (MS) and the GGSN nodes (G1, G2) via the SGSN node (NS), to assure continuity of service during the transfer of the communication sessions.