Abstract: A method includes obtaining, by an HSS, information related to a user subscribed IMS communication service identifier, and sending information of a user subscribed IMS communication service identifier to a SID-requiring network entity according to the information related to the user subscribed IMS communication service identifier.

Abstract: A method for establishing association-control relations includes these steps: An access adapting unit acquires subscription information of the user through a mobile application part (MAP) message, an SH interface message, or a Cx interface message; and acquires information indicating that the user is an ICS user from the subscription information of the user. A system, an access adapting unit, and an IMS CS control function (ICCF) for establishing association-control relations are also provided. In embodiments of the present invention, an access adapting unit such as a local-CS access adaptation function-network (L-CAAF-n) may know whether a user is an IMS centralized service (ICS) user and acquire the ICCF address information so that association-control relations may be established between the L-CAAF-n and the ICCF.

Abstract: A CS domain call terminating system, includes a routing-controlled determination module that determines a call which has been subject to routing control in accordance with information carried in a received call initiation message. The routing-controlled determination module sends routing-controlled information of the call to a subsequent call flow control module, and the subsequent call flow control module determines and executes a subsequent call flow of the call in accordance with the received routing-controlled information. A network entity can obtain the routing-controlled information of the call during CS domain call termination of the invention, thereby avoiding repeated routing control and an indefinite subsequent call flow in the CS domain call terminating flow.

Abstract: A system, method, and apparatus for providing multimedia session continuity such that support is provided for a handover of a multimedia session at a multi-mode terminal between bearers of different access modes. The system includes: a remote UE; an MCC UE, adapted to initiate a handover request of the multimedia session between a combination bearer and a multimedia bearer; an MCC, adapted to generate a multimedia handover indication and send it to a DTF according to the handover context information; and the DTF, adapted to carry out a media negotiation with the remote UE based on the multimedia handover indication, and thus the multimedia session between the MCC and the DTF is handed over between different access modes.

Abstract: A method for making a terminating network domain selection, applied in a network system including a CS network and an IMS. The method includes: receiving an IMS service request destined to a served user; judging whether the service request is appropriate to be delivered to the CS network according to a service category of the IMS service request, making a terminating network domain selection according to terminating network domain selection related factors and performing subsequent delivering processes according to the determination of the terminating network domain selection if determining that the IMS service request is appropriate to be delivered to the CS network. The present disclosure also discloses a communication apparatus and a network system.

Abstract: The present invention provides a system and apparatus for a mobile CS user to access an IMS network and a registration method for accessing. The network under the present invention comprises an IMS network for providing IMS services and a CS access network. The network contains a Register Proxy Function (RPF) entity, which comprises a first interface for communicating with the IMS network and a second interface for communicating with the CS access network. The RPF entity is adapted to map a CS registration event which is originated by the mobile CS user through the second interface to an IMS registration event, and initiate registration to the IMS network through the first interface on behalf of the mobile CS user. The technical solution under the present invention enables a mobile CS user to be registered to an IMS network practicably so that the CS user can enjoy rich IMS services.

Abstract: A method, system, and device for converting session control signaling are provided. The method includes at least one of the following steps: a first adaptation unit converts a session control signaling message of a circuit switched (CS) session leg into a session control signaling message of an IP multimedia subsystem (IMS) session leg; or the first adaptation unit converts a session control signaling message of an IMS session leg into a session control signaling message of a CS session leg. In embodiments of the present invention, an adaptation unit intercepts a CS signaling message after an inter-mobile switching center (MSC) handover, and converts CS signaling messages to IMS signaling messages and vice versa, so that the IMS domain may continue to control a session after the inter-MSC handover.

Abstract: A method includes obtaining, by an HSS, information related to a user subscribed IMS communication service identifier, and sending information of a user subscribed IMS communication service identifier to a SID-requiring network entity according to the information related to the user subscribed IMS communication service identifier.

Abstract: An interworking network element, an interworking system between the CSI terminal and the IMS terminal and the method thereof, which relate to the communication technology, enable the CSI terminal and the IMS terminal to interwork and the effective bearing link to be established according to the actual requirement. The interworking network element CSI-IW is added at the network of the called side between the CSI terminal and the IMS terminal.

Abstract: A method, system and apparatus for using an IMS communication service identifier is provided. The method includes getting, by an HSS, arrival of information related to a user subscribed IMS communication service identifier, and sending information of a user subscribed IMS communication service identifier to a SID-requiring network entity according to the information related to the user subscribed IMS communication service.

Abstract: The present disclosure provides an apparatus, system and method for short message routing control for delivering the short message when multiple paths exist. The apparatus for short message routing control includes an short message intelligent decision query unit and a Network Domain selection entity (NeDs) connected with each other; the short message intelligent decision query unit is configure to query the NeDs for a routing decision of a short message upon receiving the short message; and the NeDs is configured to determine the routing decision of the short message according to routing decision information stored in the NeDs, and return the determined routing decision to the short message intelligent decision query unit.

Abstract: The present invention provides a method for session changing. The method for session changing is designed for session changing during interworking between a first UE and a second UE in a packet network, and includes: reserving, during setup of an initial session between the first UE and the second UE, an interworking control function for logically controlling the interworking on a path of the initial session; and performing, when the interworking control function receives a subsequent session change request, the corresponding session changing operation according to contents of the subsequent session change request. The invention further provides a device for session changing and a packet network system with session changing function.

Abstract: A method of domain selection for routing control, applied to a communication system including a Circuit Switched (CS) network and an IP Multimedia Subsystem (IMS) includes: obtaining call status(es) of a user in any one or both of the CS network and the IMS; selecting a domain via which an incoming call is to be delivered according to the call status(es) upon receiving a routing decision query request from a routing decision query entity, and indicating the routing decision query entity to deliver the incoming call via the CS network or the IMS selected. The method provided by embodiments of the present invention selects the domain according to the call status(es) of the user in any one or both of the CS network and the IMS. Therefore, the problem that two calls are respectively delivered via the CS network and the IMS at the same time may be avoided.

Abstract: A method, system and apparatus for providing access mode selection to multimode terminal are disclosed. After selecting an access mode according to a certain policy, a routing decision entity correspondingly instructs a routing execution entity to perform a call connection in the selected access mode. The method for providing access mode selection to multimode terminal includes the following steps: (1) when establishing a registration connection, a terminal notifies related information of a current access network type to a network side; and (2) when performing a call connection to a called party, a routing decision entity on the network side selects the access mode and correspondingly instructs a routing execution entity to perform the call connection according to the related information and the selected access mode.

Abstract: The present invention discloses a method and a system for implementing communication for a CSI terminal, the system includes: an IP Multimedia Subsystem Terminal Module (IMS TM), a Circuit Switched Terminal Module (CS TM), a CS/IMS interworking gateway. The method includes: the IMS IM indicates the CS TM to establish a CS/IMS interworking call connection from the CS TM to the IMS TM, and establish a CS bearer between the CS TM and CS/IMS interworking gateway, the IMS TM correlated controls the two sessions respectively with the CS/IMS interworking gateway and the peer side, so as to make the media components it exchanged with the peer side be exchanged between the peer side and the CS/IMS interworking gateway via IP bearer, and then be exchanged between the CS/IMS interworking gateway and the CSI terminal through the established CS bearer. Thus the present invention ensures the communication of the CSI terminal.

Abstract: The present invention discloses a method for providing an online-charging to solve a problem that a related charging can not be processed correctly for a service involving simultaneously a CS domain and an IMS. The method includes: not invoking an online charging for the user in the CS domain when the user, who subscribes for the service involving simultaneously the CS domain and the IMS and the online charging service, originates or terminates a call in the CS domain; and performing the credit control in the CS domain and/or the IMS for the user in the IMS when the call of the user is processed through the IMS. The present invention also discloses a device and a system for an online credit control.

Abstract: A method for authenticating a terminal subscriber identity module in an IM domain includes: sending an AV request to an HSS by the S-CSCF; sending a request message for acquiring the AV to a home device of the UE upon receiving the AV request by the HSS; allocating an SQN for the UE upon receiving the request message, generating an AV based on the SQN, and sending the AV to the HSS by the HLR; sending the AV to the S-CSCF by the HSS; and authenticating the terminal subscriber identity module of the UE according to the AV by the S-CSCF. A system for authenticating a terminal subscriber identity module in an IM domain includes: UE, an S-CSCF, a home device of the UE and an HSS. The invention enables a USIM subscriber to use IM services without changing the USIM card.

Abstract: A method, a system, a security device, a service control device, and a communication terminal for providing a Multimedia Broadcast/Multicast Service (MBMS) service are provided. The method includes the following steps: A service control module in an IP Multimedia Subsystem (IMS) system carries out service authorization according to a service authorization request, and obtains an authorization-passed result. The service control module sends the authorization-passed result to a security module. The security module obtains the authorization-passed result and then sends a service decryption code of the MBMS service to UEs. In the present invention, a controlling capacity of an IMS and a bearer capacity of an MBMS are multiplexed based on an IMS system and an MBMS system to achieve IPTV services, so as to achieve the uniform authorization and uniform network management.

Abstract: A method, system, and device for providing a service in the field of communications technologies are provided. The method includes the following steps. A terminal acquires a network instruction. The terminal initiates a call in a Circuit Switched (CS) domain according to the network instruction. The CS domain provides a service according to the received call from the terminal. The system includes a delivery device, user equipment (UE), and a device for providing a service. The UE includes an acquisition module and a processing module. By providing a network entity with enhanced functions (for example, an enhanced Visit Mobile Switch Center (VMSC) and an enhanced Proxy Call Session Control Function (P-CSCF)), the terminal is capable of providing an emergency call service and a monitoring service for a terminal user when a session is established by using an Internet Protocol (IP) Multimeda Subsystem (IMS) CS Control Protocol (ICCP) signaling.

Abstract: A method, a system, and an apparatus for creating a Content-on-Demand (CoD) service are disclosed herein. The method includes receiving a Session Initiation Protocol (SIP) service request sent by a User Equipment (UE); converting the SIP service request into a Real-Time Streaming Protocol (RTSP) service request, and sending the RTSP service request to a server; receiving an RTSP service response sent by the server; and converting the RTSP service response into a SIP service response, and sending the SIP service response to the UE to create the CoD service between the UE and the server.