Abstract: The invention relates to a method for handling a handover of a call at a mobile entity from a WiFi network to a mobile communications network, comprising the following steps. A connection request is transmitted to a radio access network of the mobile communications network, the connection request comprising a first indicator indicating that the connection request is for a handover of an ongoing call currently handled by the WiFi network. A service request is transmitted to set up a connection to a call control node of the mobile communications network, the service request comprising a second indicator indicating that the service request is for the ongoing call currently handled by the WiFi network.

Abstract: Methods, nodes, computer programs and a mobile network for handling a terminating circuit switched signaling service to a terminal in a mobile network are described. A method of handling a terminating circuit switched signaling service to a terminal in a mobile network is described. The signaling service is distinct from a call. The mobile network comprises a first control node and a second control node. The method is performed by the first control node. The method comprises receiving signaling information for terminating the circuit switched signaling service to the terminal, subsequent to the step of receiving, detecting that the terminal has requested a location update from a second control node of the mobile network, and, based on the step of detecting, forwarding the received signaling information to the second control node.

Abstract: The invention relates to a method for handling a handover of a call at a mobile entity from a WiFi network to a mobile communications network, comprising the following steps. A connection request is transmitted to a radio access network of the mobile communications network, the connection request comprising a first indicator indicating that the connection request is for a handover of an ongoing call currently handled by the WiFi network. A service request is transmitted to set up a connection to a call control node of the mobile communications network, the service request comprising a second indicator indicating that the service request is for the ongoing call currently handled by the WiFi network.

Abstract: A method (30) is provided for a first network node (22) of ensuring validity of a service request. The method (30) comprises receiving (31), from a second network node (13), a first piece of information relating to a destination identifier of the service request; receiving (32), from a communication device (12), a request for the service, the request comprising a second piece of information relating to the destination identifier; and determining (33) the service request to be valid if establishing a correspondence of the first piece of information with the second piece of information, else determining the service request to be invalid. Methods in a second network node (13) and in a communications device (12) are also provided and corresponding devices.

Abstract: A method (30) is provided for a first network node (22) of ensuring validity of a service request. The method (30) comprises receiving (31), from a second network node (13), a first piece of information relating to a destination identifier of the service request; receiving (32), from a communication device (12), a request for the service, the request comprising a second piece of information relating to the destination identifier; and determining (33) the service request to be valid if establishing a correspondence of the first piece of information with the second piece of information, else determining the service request to be invalid. Methods in a second network node (13) and in a communications device (12) are also provided and corresponding devices.

Abstract: A mobile communications network includes a first switching control node supporting a Circuit Switched Fallback (CSFB) functionality and a second switching control node not supporting the CSFB functionality. The proxy includes an interface to receive a message containing an Circuit Switched Fallback Mobile Originated (CSMO) call indicator or a Circuit Switched Fallback Mobile Terminated (CSMT), call indicator from the mobile user entity. The proxy includes a control unit to determine whether the CSMO call indicator or the CSMT call indicator is set in the received message. The control unit initiates routing of the received message to the first switching control node based on the CSMO call indicator or the CSMT call indicator being set. The control unit initiates routing of the received message to the second switching control node based on neither the CSMO call indicator nor the CSMT call indicator being set.

Abstract: Methods, nodes, computer programs and a mobile network for handling a terminating circuit switched signaling service to a terminal in a mobile network are described. A method of handling a terminating circuit switched signaling service to a terminal in a mobile network is described. The signaling service is distinct from a call. The mobile network comprises a first control node and a second control node. The method is performed by the first control node. The method comprises receiving signaling information for terminating the circuit switched signaling service to the terminal, subsequent to the step of receiving, detecting that the terminal has requested a location update from a second control node of the mobile network, and, based on the step of detecting, forwarding the received signaling information to the second control node.

Abstract: The present invention relates to proxy handling messages of a mobile user entity in a mobile communications network comprising a first switching control node supporting Circuit Switched Fallback (CSFB) functionality and a second switching control node not supporting the CSFB functionality. The proxy comprises an interface configured to receive a message containing Circuit Switched Fallback Mobile Originated (CSMO) call indicator or a Circuit Switched Fallback Mobile Terminated (CSMT) call indicator from the mobile user entity. A proxy control unit is configured: to determine whether the CSMO call indicator or the CSMT call indicator is set in the received message, initiate routing of the received message to the first switching control node if the CSMO call indicator or the CSMT call indicator is set, and initiate routing of the received message to the second switching control node if neither the CSMO call indicator nor the CSMT call indicator is set.

Abstract: In accordance with embodiments of the present invention, a list of preferred Public Land Mobile Networks (PLMNs) is used by a radio access network (RAN) node for distributing subscriber registrations to respective core network (CN) nodes and, notably, is expanded to also include the Mobile Subscriber Identity Number (MSIN) of subscribers. At least one bit of the MSIN, starting from the most significant bit, is interpreted to indicate the CN node to which a subscriber registration is to be routed. In this way the granularity of the preferred PLMN list is increased and it is thereby possible to steer subscriber registrations to specific core network nodes (e.g., Mobile Switching Centers and/or Serving GPRS Support Nodes) within one CN network operator.