Abstract: A method for facilitating a handover of a communication device (202) active on a first radio access network (210) to a second radio access network (206) comprises whilst the communication device is active on the first radio access network (210), detecting (502) a target access node (216) in the second radio access network for communication with the communication device, deciding (540) to handover the communication device from the first radio access network to the detected target access node, in response to a decision to handover and prior to handing over, initiating (506) by the communication device an access control process to authenticate and authorise the communication device for access to the second radio access network, including sending by the communication device a handover request message via the first radio access network to an application server (222) communicably coupled to the first and second radio access networks to initiate the access control process, and after the communication device is authe

Abstract: A method (500) of indicating a process to be implemented in support of a mobility transfer operation and a method (600) of responding to a mobility transfer operation being initiated. A session initiation protocol (SIP) request (120, 124, 128, 220, 226, 228) can be generated. The SIP request can indicate a mobility transfer type that corresponds to the mobility transfer operation. The SIP request can be sent from a first device (102, 106) participating in the mobility transfer operation to at least a second device (106, 102) participating in the mobility transfer operation.

Abstract: The present invention provides a device and a method in a device for authenticating the device for use in a network. The method includes requesting a first security context for use in securing a first type of communication, where as part of requesting the first security context, a second security context is jointly requested for use in securing a second type of communication. The first security context is then received and used to provide secure access and communication via the first type of communication. The second security context is then received and used to provide secure access and communication via the second type of communication.

Abstract: A method for routing a plurality of calls to a single endpoint of a plurality of endpoints at a common destination is disclosed. The method comprising the steps of: initiating (202) a call over a first network (118) having a first network type, the call being directed to a destination (106) that has a plurality of endpoints 108, 110, 112, 114. Establishing (204) the call over the first network with a first final endpoint (108) of the plurality of endpoints. Receiving (206) a temporary endpoint identifier. Initiating (208) a second call to the destination by sending a request message for a second call of a second network (120), having a second network type, the request message including the temporary endpoint identifier. Establishing (210) the second call, simultaneously with the first call, over the second network with the same final endpoint.

Abstract: A system and method in which a notification is received of a call from a first device to a second device in a first domain. A context is created for the first type of call. A notification is received of initiation of a call from the second device to the first device in a second domain. The call context is utilized to notify the first device of the initiation of the call from the second device to the first device.

Abstract: In order to facilitate a handoff of a communication session between a legacy circuit switched network and a packet data network such as a 3GPP LTE, 3GPP2 UMB, or WiMAX network, which communication session is anchored in an IMS Voice Call Continuity Application Server (VCC AS), a Circuit Switched Proxy (CS Proxy) is provided in the packet data network that communicates with a Mobile Switching Center (MSC) of the circuit switched network. The CS Proxy allows the packet data network to communicate with the VCC AS, the MSC to communicate with the packet data network, and the MSC to communicate with the VCC AS via the packet data network, thereby allowing an exchange of handoff-related information between the packet data network and the VCC AS, the packet data network and the circuit switched network, and the circuit switched network and the VCC AS via the packet data network.

Abstract: In order to facilitate a handoff of a communication session between a legacy circuit switched network and a packet data network such as a 3GPP LTE, 3GPP2 UMB, or WiMAX network, which communication session is anchored in an IMS Voice Call Continuity Application Server (VCC AS), a Circuit Switched Proxy (CS Proxy) is provided in the packet data network that communicates with a Mobile Switching Center (MSC) of the circuit switched network. The CS Proxy allows the packet data network to communicate with the VCC AS, the MSC to communicate with the packet data network, and the MSC to communicate with the VCC AS via the packet data network, thereby allowing an exchange of handoff-related information between the packet data network and the VCC AS, the packet data network and the circuit switched network, and the circuit switched network and the VCC AS via the packet data network.

Abstract: A method of updating core domain information for use by a communication device (4) for routing a service for the communication device in a communication environment (2) including a core network (8) having a plurality of core domains (9, 11), and a plurality of radio access networks (6), each of the plurality of radio access networks being associated with at least one of the plurality of core domains, comprises generating (304) by the core network network information. The network information includes information identifying a preferred core domain for the communication device and a preferred radio access network and being based on network based parameters provided by the core network and connectivity information received from the communication device identifying the radio access networks of the plurality of radio access networks which are available to the communication device for communication.

Abstract: Changing access points for a mobile node (106) in a wireless access network (100), for example a wireless local area network (WLAN), includes the mobile node (106) communicating content data on an initial channel (214) via an initial access point (104) of the wireless access network (100); the mobile node (106) sending a handover request on a new channel (215) to a new access point (105) of the wireless access network (100); the mobile node (106) resuming communication of content data on the initial channel (214) via the initial access point (104); the initial access point (104) and the new access point (105) performing handover steps while the mobile node (106) resumes communication of content; and when the handover steps are completed, the mobile node (106) communicating content data on the new channel (215) via the new access point (105).

Abstract: A system and method in which a notification is received of a call from a first device to a second device in a first domain. A context is created for the first type of call. A notification is received of initiation of a call from the second device to the first device in a second domain. The call context is utilized to notify the first device of the initiation of the call from the second device to the first device.

Abstract: A method for routing a plurality of calls to a single endpoint of a plurality of endpoints at a common destination is disclosed. The method comprising the steps of: initiating (202) a call over a first network (118) having a first network type, the call being directed to a destination (106) that has a plurality of endpoints 108, 110, 112, 114. Establishing (204) the call over the first network with a first final endpoint (108) of the plurality of endpoints. Receiving (206) a temporary endpoint identifier. Initiating (208) a second call to the destination by sending a request message for a second call of a second network (120), having a second network type, the request message including the temporary endpoint identifier. Establishing (210) the second call, simultaneously with the first call, over the second network with the same final endpoint.

Abstract: The present invention provides a communication system and a method for redirecting a call to a call destination between multiple different operating modes. An attempt to establish a communication connection with the call destination is made via a first operating mode. Upon receipt of a rejection of the attempt to establish a communication connection, a determination is made as to a second operating mode, which is different from the first operating mode, that is capable of supporting a communication with the call destination via a communication connection. A type of call data for the call is then converted from a type corresponding to the first operating mode to a type corresponding to the second operating mode, and the call data of the call having the converted type corresponding to the second operating mode is communicated using a communication connection established with the call destination via the second operating mode.

Abstract: A capability update during a voice call between a first mobile device and a second mobile device. A communications link is configured between the first mobile device and the second mobile device to allow the first mobile device and the second mobile device to exchange a first type of data. The communications link is reconfigured to allow the first mobile device and the second mobile device to exchange concurrently both the first type of data and a second type of data.