Ggsn proxy for one tunnel solution

A service support node for roaming between Public Land Mobile Networks (PLMN) in a wireless mobile communication network protocol, wherein the service support node is located in a current PLMN and arranged with a processing unit operable to:

• send a context request to a first service support node in another PLMN for a user equipment;
• receive a context response from the first service support node;
• send a context acknowledgement to the first service support node;
• send a relocate PDP context request to a second proxy gateway support node in the current PLMN;
• receive a relocate PDP context response from the second proxy gateway support node;
• send an update location message to a home location register of the user equipment;
• and
• receive an update location acknowledgement message from the home location register.

A proxy gateway support node for roaming between Public Land Mobile Network (PLMN) areas in a mobile wireless communication network, wherein the proxy support node is arranged with a processing unit operable to:

• receive a relocate Packet Data Protocol (PDP) context request from a second service support node;
• send an update PDP context request to a home gateway support node;
• receive an update PDP context response from the home gateway support node;
• and
• send a relocate PDP context response to the second service support node.

A mobile communication infrastructure network arranged to handle roaming between different Public Land Mobile Network (PLMN) areas, comprising

• at least one service support node;
• at least one gateway support node;
• and
• at least one proxy gateway support node wherein the proxy gateway support node is located between the gateway support node and the service support node and wherein the proxy gateway support node is operable to receive a relocate Packet Data Protocol (PDP) context request from a second service support node, send an update PDP context request to a home gateway support node, receive an update PDP context response from the home gateway support node, and send a relocate PDP context response to the second service support node.