Patent ID: 8385290

Claim:
A method of handling a Local Break Out (LBO) session taking place in a first network between a corresponding node and a user equipment, when said user equipment is roaming from the first network to a second network, wherein the first network includes at least a first node that allocates an IP address in form of a Local Home Address (LHoA) for said user equipment, and where downlink packets are being sent from the corresponding node to the user equipment and uplink packets are being sent from the user equipment to the corresponding node, the method comprises the steps of: converting, in a conversion node in the first or the second network, the destination IP address of the downlink packets from an LHoA to a Global Home Address (GHoA); routing, from the first node, directly or indirectly to a second node in the second network, any downlink packets being sent from the corresponding node; converting, in the conversion node in the first or the second network, the source IP address of the uplink packets from a GHoA to an LHoA, wherein said step(-s) of converting the IP address(-es) of the uplink and/or downlink packets always is/are performed in a node in the network most recently entered by the user equipment provided that the node is provided with functionality for allocating an IP address in form of a Local Home Address (LHoA) for said user equipment such that the routing can be performed directly between the first and the second nodes; and routing, from the second node, directly or indirectly to the first node, any uplink packets being sent from the user equipment, wherein the new path for the local break out session takes place via at least the first node in the first network and the second node in the second network.