WO2008064575A1 - Procédé, système et appareil permettant la mise en place de service de partage vidéo - Google Patents

Procédé, système et appareil permettant la mise en place de service de partage vidéo Download PDF

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Publication number
WO2008064575A1
WO2008064575A1 PCT/CN2007/003390 CN2007003390W WO2008064575A1 WO 2008064575 A1 WO2008064575 A1 WO 2008064575A1 CN 2007003390 W CN2007003390 W CN 2007003390W WO 2008064575 A1 WO2008064575 A1 WO 2008064575A1
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WO
WIPO (PCT)
Prior art keywords
user terminal
called
application server
called user
video sharing
Prior art date
Application number
PCT/CN2007/003390
Other languages
English (en)
French (fr)
Inventor
Sanyang Ke
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP07845753A priority Critical patent/EP1962521A4/en
Priority to CN200780000608.2A priority patent/CN101326838A/zh
Publication of WO2008064575A1 publication Critical patent/WO2008064575A1/zh
Priority to US12/140,625 priority patent/US7730127B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/401—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
    • H04L65/4015—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference where at least one of the additional parallel sessions is real time or time sensitive, e.g. white board sharing, collaboration or spawning of a subconference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
    • H04N21/4788—Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6581—Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]

Definitions

  • the present invention relates to the field of communication technologies, and more particularly to a method, system and apparatus for implementing a video sharing service. Background technique
  • a video sharing service refers to a user terminal sharing local video information with one or more other user terminals.
  • the video information shared by the user terminal includes videos captured by the camera, local video files, pictures, music, animations, and the like.
  • the signaling control of the video sharing service is based on the Session Initiation Protocol (SIP).
  • SIP Session Initiation Protocol
  • the calling user terminal and the called user terminal need to register in the IMS core network before performing video sharing.
  • Video sharing can be performed between a broadband mobile network and a non-broadband mobile network, or between non-broadband mobile networks.
  • Broadband mobile networks include: Third Generation Partnership Project Release 5 (3GPPR5) and mobile networks after 3GPP R5, all calls in 3GPP R5 and subsequent mobile networks are carried over IP.
  • Non-broadband mobile networks include: 2.5 generation mobile communication system (2.5G), third generation partnership program version 99 (3GPPR99), third generation partner program version 4 (3GPP R4), in a non-broadband mobile network, basic calls are carried over a Circuit Switch (CS) domain, and data services are carried by a General Packet Radio Service (GPRS).
  • 2.5G 2.5 generation mobile communication system
  • 3GPPR99 third generation partnership program version 99
  • 3GPP R4 third generation partner program version 4
  • CS Circuit Switch
  • GPRS General Packet Radio Service
  • the calling user terminal communicates with the calling application server through the calling IMS core network
  • the calling application server communicates with the called application server through the calling IMS core network and the called IMS core network
  • the called application server passes the
  • the IMS core network is used to communicate with the called user terminal.
  • the video sharing service in the prior art includes the following steps:
  • Steps 101 to 106 the calling user terminal and the called user terminal perform media negotiation based on the SIP protocol.
  • the calling user terminal sends a video sharing invitation to the called user terminal through the calling application server (Application Server, AS), the called application server, and the called user terminal through the called application server, the calling application server, and the The calling user terminal sends the result of the media negotiation.
  • AS Application Server
  • Steps 107-130 the calling user terminal establishes temporary communication with the called user terminal.
  • the calling user terminal sends a temporary response confirmation (PRACK) to the called user terminal through the calling application server and the called application server; the called user terminal sends the called user terminal to the calling user terminal through the called application server and the calling application server.
  • Confirmation message the calling user terminal sends an update (UPDATE) message to the called user terminal through the calling application server and the called application server; the called user terminal sends the vibration to the calling user terminal through the called application server and the calling application server.
  • Ringing message the calling user terminal sends a temporary response confirmation (PRACK) message to the called user terminal through the calling application server and the called application server; the called user terminal sends the calling application terminal to the calling user terminal through the called application server and the calling application server.
  • PRACK temporary response confirmation
  • RTP Real-time Transport Protocol
  • the calling user terminal establishes an RTP link with the called user terminal; the called user terminal sends a receiver report to the calling user terminal; the calling user terminal sends a sender report to the called user terminal; the calling user terminal and the calling user terminal
  • the called user terminal performs video sharing through the RTP link.
  • Step naked 135 ⁇ 141 the called user terminal terminates the sharing, the calling user terminal and the called user terminal release the communication link, and the video sharing ends.
  • the called user terminal sends a release RTP link message to the calling user terminal; the called user terminal sends a release message to the calling user terminal through the called application server and the calling application server; the calling user terminal passes the calling application.
  • the server and the called application server send a release confirmation message to the called user terminal.
  • the GPRS connection needs to be activated and registered in the IMS core network, and the user terminal in the broadband mobile network is automatically registered in the IMS core network when the device is powered on.
  • User terminals in any one network cannot share video information with user terminals in other networks before registering with the IMS core network.
  • the two parties first conduct connection and media negotiation through the SIP protocol, and then perform the transmission of the shared media according to the result of the media negotiation.
  • the control signal of the calling user terminal in the broadband mobile network cannot be correctly routed to the called user terminal. If the correct routing of the control signaling is required, the user terminal of the non-broadband mobile network is required to be in the GPRS activation and IMS registration state, which not only occupies a large amount of resources of the packet domain, but also maintains the activation state of the GPRS, which increases the energy consumption of the user terminal. The standby time of the user terminal is usually shortened.
  • FIG. 1 is a schematic diagram of a method for implementing video sharing services between a calling terminal and a user terminal of a non-broadband mobile network in the prior art.
  • the calling user terminal communicates with the calling application server through the calling IMS core network
  • the calling application server communicates with the called application server through the calling IMS core network and the called IMS core network
  • the called application server passes the Call IMS core network and called
  • the user terminal communicates.
  • the following is a description of the method.
  • the method for implementing the method is described by using only the calling user terminal, the calling application server, the called application server, and the called user terminal. Referring to Figure 2, the method includes the following steps:
  • Step 201 The calling user terminal establishes a voice call with the called user terminal.
  • Steps 202 - 213 The calling user terminal and the called user terminal mutually query whether the other party has the video sharing capability.
  • the calling user terminal sends a query message to the called user terminal through the calling application server and the called application server; the called user terminal sends a query confirmation message to the calling user terminal through the called application server and the calling application server; The called user terminal sends a query message to the calling user terminal through the called application server and the calling application server.
  • the calling user terminal sends a query confirmation message 200 to the called user terminal through the calling application server and the called application server.
  • Steps 214 ⁇ 219, the calling user terminal and the called user terminal perform media negotiation based on the SIP protocol.
  • the calling user terminal sends a video sharing request to the called user terminal through the calling application server and the called application server; the called user terminal sends the media negotiation to the calling user terminal through the called application server and the calling application server.
  • the calling user terminal sends a PRACK message to the called user terminal through the calling application server and the called application server; the called user terminal sends a confirmation message to the calling user terminal through the called application server and the calling application server;
  • the calling user terminal sends an UPDATE message to the called user terminal through the calling application server and the called application server; the called user terminal sends a ringing message to the calling user terminal through the called application server and the calling application server;
  • the calling user terminal Sending a PRACK message to the called user terminal through the calling application server and the called application server;
  • the called user terminal sends an acknowledgement message to the calling user terminal through the called application server and the calling application server;
  • the called user terminal passes the called application
  • the server and the calling application server send a video sharing request confirmation message to the calling user terminal.
  • the calling user terminal sends a response confirmation message to the called user terminal through the calling application server and the called application server. Steps 247-250, the calling user terminal establishes an RTP link with the called user terminal, and
  • the calling user terminal establishes an RTP link with the called user terminal; the called user terminal sends a receiver to the calling user terminal; the calling user terminal sends a sender report to the called user terminal; the calling user The terminal and the called user terminal perform video sharing through the RTP link;
  • Step 251 257 The called user terminal terminates the sharing, and the user terminal 1 and the user terminal 2 release the communication link, and the video sharing ends.
  • the called user terminal sends a #t RTP link message to the calling user terminal; the called user terminal sends a release message to the calling user terminal through the called application server and the calling application server; the calling user terminal passes the calling party.
  • the application server and the called application server send a release confirmation message to the called user terminal.
  • Step 258 The calling user terminal and the called user terminal resume the voice call state of the circuit switched domain.
  • the calling user terminal and the called user terminal first establish a voice call through the circuit switched domain. After the voice call is established, the calling user terminal and the called user terminal automatically activate the GPRS connection, and register to After the IMS core network, video sharing can be implemented between the calling user terminal and the called user terminal.
  • the video sharing must first perform circuit switching. Voice calls in the domain impose a certain degree of restrictions on the use of video sharing services. Users may abandon sharing because of the cost of voice calls. Second, in fact, most users' voice calls are just making calls, and video sharing is not necessarily required.
  • the present invention provides a method, a system, and a device for implementing a video sharing service, which are used to solve the problem that video sharing cannot be performed if the user terminals do not establish voice intercommunication between the prior art.
  • the calling user terminal sends a video sharing request containing the called user identifier to the application server; the application server determines that the called user terminal is not registered in the IP multimedia subsystem, and notifies the called user terminal to register, the called party The user terminal activates the GPRS connection and registers with the IMS core network of the called home network;
  • the calling user terminal performs video sharing with the called user terminal.
  • the IMS is configured to forward a message between the user terminal and the application server, and provide a video sharing service after the calling user terminal and the called user terminal are registered;
  • An application server configured to notify the called user terminal to register after determining that the called user terminal is not registered in the IMS after receiving the video sharing request with the called user identity from the calling user terminal;
  • a calling user terminal configured to send a video sharing request containing the called user identifier to the application server, and establish a sharing session with the called user terminal after the called user terminal registers;
  • the called user terminal is configured to: after receiving the video sharing request, if not registered to the IMS core network of the called home network, activate the GPRS connection and register in the IMS core network of the called home network, and Establish a sharing session with the calling user terminal.
  • the application server After receiving the video sharing request with the called user identifier, the application server notifies the called user terminal to register if it is determined that the called user terminal is not registered to the IMS;
  • An application server provided by an embodiment of the present invention includes: a registration determining unit, configured to determine, after the verification of the called user identifier included in the video sharing request, whether the called user terminal is registered in the IMS;
  • a registration notification unit configured to send a notification of registration to the IMS to the called user terminal by using a short message when determining that the called user terminal is not registered
  • a video sharing requesting unit configured to send a video sharing request to the called user terminal after determining that the called user terminal registers with the IMS.
  • the calling user terminal when the calling user terminal needs to perform video sharing, the calling user terminal sends a video sharing request including the called user identifier to the application server, where the application server determines that the called user terminal is not registered.
  • the called user terminal After the IMS core network of the called home network is registered, the called user terminal is notified to register with the IMS core network of the called home network, and the called user terminal activates the GPRS connection and is in the IMS core network of the called home network.
  • the registration is performed, and the video sharing service is implemented with the calling user terminal after the called user terminal registers.
  • FIG. 1 is a schematic diagram of a signaling flow for implementing a video sharing service between a user terminal of a broadband mobile network as a calling party and a user terminal of a non-broadband mobile network as a called party;
  • FIG. 2 is a schematic diagram of a signaling flow for implementing a video sharing service between a calling terminal and a user terminal of a non-broadband mobile network in the prior art
  • FIG. 3 is a schematic diagram of a main structure of a system for implementing a video sharing service according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a main structure of a first embodiment of a system for implementing a video sharing service according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a main structure of a second embodiment of a system for implementing a video sharing service according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a main structure of a third embodiment of a system for implementing a video sharing service according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a main structure of an application server according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a main signaling flow of a method for implementing a video sharing service in an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a main process of a method for implementing a video sharing service according to an embodiment of the present invention.
  • the application server in the dynamic network notifies the called user terminal to register to the IMS core network, for example, sends a short message to the called user terminal, and implements a video with the calling user terminal after the called user terminal registers with the IMS core network. Sharing business.
  • the system for implementing video sharing services mainly includes: a calling user terminal 31, an IMS core network 32, an application server 33, and a called user terminal 34.
  • the IMS core network 32 which is connected to the user terminals, is used to forward the message between the user terminal and the application server 33. After the calling user terminal 31 and the called user terminal 34 are registered, the video sharing service is provided.
  • the application server 33 is configured in the application system, and after receiving the video sharing request containing the called user identifier from the autonomous calling user terminal 31, if it is determined that the called user terminal 34 is not in the IMS core network of the called home network Registering, notifying the called user terminal 34 to register with the IMS core network of the called home network;
  • a calling user terminal 31 configured to send a video sharing request containing the called user identifier to the application server 33;
  • the called user terminal 34 is configured to: after receiving the video sharing request, if not registered to the IMS core network of the called home network, activate the GPRS connection and register in the IMS core network of the called home network.
  • the application server includes a calling application server and a called application server
  • the IMS core network includes an IMS core network and a called home network. Called the IMS core network of the home network.
  • the IMS core network of the calling home network sends the video sharing request to the calling application server after receiving the video sharing request containing the called user identity from the calling user terminal.
  • the video sharing request is sent to the IMS core network of the calling home network, and the IMS core network of the calling home network sets the video.
  • the sharing request is sent to the IMS core network of the called home network.
  • the IMS core network of the called home network sends the video sharing request to the called application server.
  • the called application server determines whether the called user terminal is registered in the IMS core network of the called home network, and if not registered, notifies the called user terminal to register to the IMS core network of the called home network, the called party
  • the user terminal activates the GPRS connection and registers with the IMS core network of the called home network.
  • the called application server forwards the video sharing request of the calling user terminal to the called user terminal.
  • the called application server determines whether the allowed video sharing notification from the called user terminal is received, and if yes, the IMS core network of the called home network, the IMS core network of the calling home network, The calling application server sends a permission video sharing notification, and the calling application server sends a permission video sharing notification to the calling user terminal through the IMS core network of the calling home network, where the calling user terminal and the called user are Calling the user terminal to perform video sharing; otherwise, sending, by the IMS core network of the called home network, the IMS core network of the calling home network, a rejection video sharing notification to the calling application server, the calling application server The rejected video sharing notification is sent to the calling user terminal through the IMS core network of the calling home network.
  • the called application server includes: a registration determining unit 41, a registration notifying unit 42, and a video sharing requesting unit 43.
  • the registration determining unit 41 is configured to determine, after the verification of the called user identifier included in the video sharing request, whether the called user terminal is in the IMS core network of the called home network.
  • a registration notification unit 42 configured to: when the registration determining unit 41 determines that the called user terminal is not registered, querying from the IMS core network of the called home network according to the called user identifier included in the video sharing request Obtaining a phone uniform resource identifier of the called user terminal, and sending, to the called user terminal, a notification that is registered to the IMS core network of the called home network according to the phone uniform resource identifier; the video sharing requesting unit 43 is configured to perform the registration The determining unit 41 determines that the called user terminal sends a video sharing request to the called user terminal after registering with the IMS core network of the called home network.
  • the called application server further includes: a verification unit 44, configured to verify the called user identifier included in the video sharing request, and send the verification result to the registration determining unit 41.
  • the IMS core network of the called home network includes: a data storage unit 51, a query unit 52, and a terminal status unit 53.
  • the data storage unit 51 is configured to save a correspondence between the user terminal and the phone uniform resource identifier.
  • the query unit 52 is configured to obtain the called user by using the correspondence relationship saved by the data storage unit 51. And identifying a phone uniform resource identifier of the corresponding called user terminal.
  • the terminal status unit 53 is configured to send a third party registration request to the online state entity after receiving the registration request of the called user terminal.
  • the registration notification unit 42 can send a query notification to the query unit 52, including the called user identification contained in the video sharing request.
  • system may further include: an online state entity, configured to save online status information of the called user terminal in the IMS core network of the called home network, such that the registration determining unit 41 may be based on the online status entity.
  • the online status information determines whether the called user terminal is registered in the IMS core network of the called home network.
  • the video sharing request unit 43 sends a video sharing request to the called user terminal.
  • the registration notification unit 42 utilizes the called user identifier included in the video sharing request.
  • the IMS core network of the called home network obtains the telephone uniform resource identifier of the called user terminal.
  • the registration notification unit 42 When the registration notification unit 42 does not obtain the telephone uniform resource identifier of the called user terminal from the IMS core network of the called home network, the registration notification unit The IMS core network of the called home network and the IMS core network of the calling home network notify the calling application server that the called user terminal cannot be reached; the calling application server notifies the calling user terminal through the IMS core network of the calling home network. , the called user terminal cannot be reached.
  • system may further include: a short message center, where the registration notification unit 42 is configured to: when the registration determining unit 41 determines that the called user terminal is not registered to the IMS core network of the called home network, according to the slave
  • the called user terminal phone unified resource identifier obtained by the IMS core network of the home network is sent to the short message center as a trigger signaling.
  • the short message center is configured to send the short message to the called user terminal after receiving the short message, and notify the called user terminal to register to the IMS core network of the called home network.
  • the called user terminal is configured to: after receiving the short message, activate a GPRS connection according to the service identifier included in the short message and register in the IMS core network of the called home network.
  • the terminal status unit 53 after receiving the registration request of the called user terminal, sends a third party registration request to the online status entity.
  • the called user terminal registration notification is sent to the online state entity, and the online state entity sends the called user terminal status information to the called application server.
  • the video sharing request unit 43 sends the called user terminal to the called user terminal. Send the video sharing request.
  • the online state entity in the embodiment of the present invention includes: a terminal registration unit 61.
  • the terminal registration unit 61 is configured to record status information of the called user terminal on the IMS core network.
  • the registration determining unit 41 can determine whether the called user terminal is registered in the IMS core network of the called home network according to the status information of the called user terminal in the IMS core network in the terminal registration unit 61.
  • the application server provided by the embodiment of the present invention mainly includes: a registration determination unit 71, a registration notification unit 72, and a video sharing request unit 73.
  • the registration determining unit 71 is configured to determine, after the verification of the called user identifier included in the video sharing request, whether the called user terminal is registered in the IMS core network of the called home network.
  • the registration notification unit 72 is configured to, when determining that the called user terminal is not registered, obtain the telephone unified resource identifier of the called user terminal from the IMS core network of the called home network, and according to the unified resource identifier of the telephone Calling the user terminal to send a notification registered to the IMS core network of the called home network;
  • the video sharing requesting unit 73 is configured to send a video sharing request to the called user terminal after determining that the called user terminal registers with the IMS core network of the called home network;
  • the application server further includes: a verification unit 74, configured to verify the called user identifier included in the video sharing request, and send the verification result to the registration determining unit 71.
  • the signaling process for implementing the video sharing service includes:
  • Steps 801 to 802 the calling user terminal sends a video sharing request to the called application server through the calling application server.
  • the called application server sends a subscription status information request to the online status entity; the online status entity sends a request confirmation message to the called application server; the online status entity sends status information to the called application server; and the called application server sends the status status entity to the online status entity.
  • Step 807 The called application server queries the phone uniform resource identifier of the called user terminal. Specifically, the called application server queries the called user's telephone uniform resource identification message locally or to an entity such as a home subscriber server (HSS) or an E.164 number entity (ENUM) according to the SIP U I of the called user terminal.
  • HSS home subscriber server
  • ENUM E.164 number entity
  • Steps 808 ⁇ 813 the called application server sends a short message to the called user terminal through the short message center.
  • the called application server sends a short message through the short message center; the short message center sends an acknowledgement message to the called application server; the short message center sends a short message to the called user terminal; and the called user terminal sends an acknowledgement message to the short message center. ; called application server through calling application service Transmitting a temporary response message to the calling user terminal;
  • Step 814 817 third party registration of the IMS core network.
  • the method includes: after receiving the short message, the called user terminal sends a third party registration request to the called home IMS core network; after receiving the registration request, the IMS core network sends the third party registration request to the online state entity; Sending a registration confirmation message to the IMS core network; the online state entity sends a called user terminal registration notification to the called application server; the called application server sends the called user terminal registration notification response message to the called user terminal through the online state entity.
  • Step 818 The called application server forwards the video sharing notification to the called user terminal.
  • Steps 819 ⁇ 848 the calling user terminal establishes temporary communication with the called user terminal.
  • the called user terminal sends an acknowledgement message to the calling user terminal through the called application server and the calling application server; the calling user terminal sends an update (UPDATE) to the called user terminal through the calling application server and the called application server.
  • the called user terminal sends a ringing message to the calling user terminal through the called application server and the calling application server; the calling user terminal sends a PRACK message to the called user terminal through the calling application server and the called application server; Calling the user terminal to send a confirmation message to the calling user terminal through the called application server and the calling application server; the called user terminal sends a video sharing request confirmation message to the calling user terminal through the called application server and the calling application server;
  • the user terminal sends a response confirmation message to the called user terminal through the calling application server and the called application server;
  • Steps 849 ⁇ 852 the calling user terminal establishes an RTP link with the called user terminal, and performs video sharing.
  • the calling user terminal establishes an RTP link with the called user terminal; the called user terminal sends a receiver report to the calling user terminal; the calling user terminal sends a sender report to the called user terminal; the calling user terminal and the calling user terminal
  • the called user terminal performs video sharing through the RTP link;
  • Steps 853 ⁇ 859 the called user terminal terminates the sharing, the calling user terminal and the called user terminal release the communication link, and the video sharing ends.
  • the called user terminal sends a release RTP link message to the calling user terminal;
  • the called user terminal sends a release cancellation message to the calling user terminal through the called application server and the calling application server.
  • the calling user terminal sends a release confirmation message to the called user terminal through the calling application server and the called application server;
  • Steps 860 ⁇ 863, the online state entity and the IMS core network are unregistered.
  • the called application server sends an unsubscribing status information request to the online status entity; the online status entity sends an unsubscribe confirmation message to the called application server; the IMS core network sends a deregistration request to the online status entity; the online status entity to the IMS core The network sends a cancellation registration confirmation message.
  • the method for implementing a video sharing service includes the following steps:
  • Step 901 The calling user terminal sends a video sharing request to the called application server by using the calling application server, and after receiving the received application, the called application server sends a subscription status information request to the online state entity.
  • Step 902 After receiving the subscription status information request from the called application server, the online state entity sends the status information to the called application server.
  • Step 903 The called application server determines, according to the status information sent by the online status entity, whether the called user terminal is registered to the IMS core network. If yes, step 911 is performed; otherwise, step 904 is performed.
  • Step 904 The called application server queries the called home network for the telephone number of the called user terminal.
  • Step 905 The called application server determines whether the phone number of the called user terminal is queried, and if yes, step 906 is performed, otherwise, step 907 is performed.
  • Step 906 The called application server directly or notifies other functional entities to send a short message to the called user terminal according to the telephone number through the short message center, and step 908 is performed.
  • Step 907 The called application server sends a called user terminal to the calling user terminal to notify the calling user terminal that the called terminal cannot respond to the notification, and step 914 is performed.
  • Step 908 After receiving the short message from the short message center, the called user terminal registers with the IMS core network.
  • Step 909 The IMS core network initiates third-party registration to the online state entity, and the IMS core network registers. After the ⁇ , the called user terminal registration notification is sent to the online state entity.
  • Step 910 After receiving the registration request of the called user terminal from the IMS core network, the online state entity sends a notification of the called user terminal registration to the called application server.
  • Step 911 The called application server forwards the calling user terminal video sharing request to the called user terminal.
  • Step 912 The called application server determines whether the allowed video sharing notification from the called user terminal is received. If yes, go to step 915. Otherwise, go to step 913.
  • Step 913 The called application server sends a rejection video sharing notification to the calling user terminal through the calling application server.
  • Step 914 After receiving the notification that the called user terminal sent by the calling application server cannot respond to the notification, the calling user terminal cancels the video sharing request.
  • Step 915 The calling user terminal performs video sharing with the called user terminal.
  • Step 916 After the calling user terminal and the called user terminal end video sharing, the called application server notifies the online state entity to cancel the subscription of the called user terminal status information, and the called user terminal notifies the IMS core network to cancel the registration, and ends the process.
  • the called application server After the calling user terminal sends a video sharing request to the called application server through the calling application server, the called application server needs to determine whether the called user terminal is registered to the IMS core network, and the called application server is online to the called home network.
  • the status entity sends a subscription to the called user terminal status information request. Since the online state entity is configured to record the registration status of the called user terminal in the IMS core network, after receiving the request sent by the called application server, the online state entity sends the status information of the called user terminal to the called application server. Notice.
  • the called application server After receiving the status information of the called user terminal from the online state entity, the called application server determines whether the called user terminal is registered to the IMS core network, and if the called application server determines that the called user terminal has registered to the IMS core network, Forward the video sharing request to the called user terminal. After receiving the received user terminal, the called user terminal performs media negotiation and resource reservation with the calling user terminal, and performs video sharing through the RTP link established between the calling user terminal and the called user terminal.
  • the called application server determines that the called user terminal is not registered to the IMS core network, the called application server is called Querying the telephone uniform resource identifier of the called user terminal in the local database, the HSS or the entity of the home network, and if the called application server determines to query the telephone uniform resource identifier of the called user terminal, parsing out the unified resource identifier from the phone Calling the telephone number of the user terminal, the called application server can directly or notify the calling home network and other functional entities in the called home network to send a short message to the called user terminal through the short message center, and the called user terminal receives the short message. Then register to the IMS core network. If the called application server determines that the telephone uniform resource identifier of the called user terminal is not queried, it replies with a response that the called user terminal cannot reach, and after the calling user terminal receives, cancels the video sharing request.
  • the IMS core network After the called user terminal registers with the IMS core network, the IMS core network sends a third-party registration request to the online state entity, and the online state entity receives the third-party registration request, and sends the called user terminal online notification to the called application server, or The called user terminal directly sends an online notification to the called application server, and the online notification indicates that the called user terminal has been registered.
  • the called application server After receiving the online notification sent by the online state entity or the called user terminal, the called application server forwards the video sharing request of the calling user terminal to the called user terminal, and after receiving the media, the called user terminal performs media with the calling user terminal.
  • negotiation and resource reservation video sharing is performed through an RTP link established between the calling user terminal and the called user terminal.
  • the called application server After the calling user terminal and the called user terminal end the video sharing, the called application server notifies the online state entity to cancel the subscription of the called user terminal status information, and the called user terminal notifies the IMS core network to cancel the registration.
  • the application server When there is no online state entity in the mobile network, the application server does not need to obtain the state information of the called user terminal from the online state entity.
  • the called application server determines whether the called user terminal is registered according to the offline response of the called user terminal from the IMS core network.
  • the IMS core network To the IMS core network, if the called user terminal has already registered to the IMS core network, the calling user terminal and the called user terminal perform video sharing. If the called user terminal is not registered to the IMS core network, the application server directly or notifies the system.
  • the other functional entity sends a short message to the called user terminal through the short message center, and the called user terminal registers with the IMS core network after receiving the short message, and the called user After the terminal is successfully registered, the video sharing service is implemented with the calling user terminal.
  • the video sharing service is implemented between the user terminals by using the method, the system and the device of the embodiment of the present invention, it is not necessary to first establish a voice call in the circuit switched domain, which is beneficial to the implementation of the video sharing service between the user terminals; It is not necessary to establish a voice call and register to the IMS core network every time, which saves GPRS resources; whether the user terminal registers with the IMS core network, the application server only needs to notify the called user terminal to register with the IMS core network of the called home network, After the called user terminal is registered to the IMS core network of the called home network, the video sharing service is implemented between the user terminals, and the video sharing service cannot be realized by establishing a voice call of the circuit switched domain between the user terminals.

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Description

一种实现视频共享业务的方法、 系统及装置
技术领域
本发明涉及通信技术领域， 更具体的说， 是一种实现视频共享业务的方 法、 系统及装置。 背景技术
随着移动通讯技术的发展， 人们不再满足于单一的语音通信方式， 而需 要全新的多媒体通信方式， 这种多媒体通信不仅仅是简单的视音频通信， 还 包括即时消息、 协同工作、 流媒体等等业务， 特别是新通信方式和传统语音 融合的业务。 基于互联网和电信网络融合的趋势， 各标准化组织提出了下一 代网络的概念 , 第三代伙伴计划（ Third Generation Partnership Project, 3 GPP ) 在分组承载网基础上引入的全互联网协议（Internet Protocol, IP )业务网络架 构的 IP多媒体子系统（ IP Multimedia Subsystem, IMS )核心网， 目标是按照 个性化用户数据， 屏蔽用户接入方式， 控制业务能力的开放程度， 提供多媒 体的通信体验。 视频共享业务是指一个用户终端将本地的视频信息与其它一 个或多个用户终端共享。 其中， 用户终端共享的视频信息包括摄像头拍摄的 视频、 本地视频文件、 图片、 音乐和动画等。
视频共享业务的信令控制基于会话发起协议（ Session Initiation Protocol, SIP ), 主叫用户终端和被叫用户终端在进行视频共享前， 需要在 IMS核心网 中注册。 视频共享可以在宽带移动网络和非宽带移动网络之间进行， 也可以 在非宽带移动网络之间进行。 宽带移动网络包括： 第三代伙伴计划版本 5 ( 3GPPR5 )以及 3GPPR5之后的移动网络， 在 3GPPR5及其之后的移动网络 中所有的呼叫都是通过 IP承载。 非宽带移动网絡包括： 2.5代移动通信系统 ( 2.5G )、 第三代伙伴计划版本 99(3GPPR99)、 笫三代伙伴计划版本 4(3GPPR4),在非宽带移动网絡中基本呼叫通过电路交换（Circuit Switch, CS ) 域承载， 数据业务通过通用分组无线业务（General Packet Radio Service, GPRS )承载。
图 1 为现有技术中作为主叫的宽带移动网络的用户终端与作为被叫的非 宽带移动网络中的用户终端实现视频共享业务的方法。 其中， 主叫用户终端 通过主叫 IMS核心网与主叫应用服务器进行通信， 主叫应用服务器通过主叫 IMS核心网、 被叫 IMS核心网与被叫应用服务器进行通信， 被叫应用服务器 通过被叫 IMS核心网与被叫用户终端进行通信， 以下为描述方便， 仅使用主 叫用户终端、 主叫应用服务器、 被叫应用服务器、 被叫用户终端对本方法的 实现方式进行描述。
参阅图 1所示， 现有技术中实现视频共享业务包括以下步骤：
步骤 101 ~ 106、 主叫用户终端与被叫用户终端基于 SIP协议进行媒体协 商。
具体包括： 主叫用户终端通过主叫应用服务器（Application Server, AS )、 被叫应用服务器、 向被叫用户终端发送视频共享邀请； 被叫用户终端通过被 叫应用服务器、 主叫应用服务器、 向主叫用户终端发送媒体协商的结果。
步骤 107 ~ 130、 主叫用户终端与被叫用户终端建立临时通信。
具体包括： 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫 用户终端发送临时响应确认（PRACK ); 被叫用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送确认消息； 主叫用户终端通过主叫应用 服务器、 被叫应用服务器向被叫用户终端发送更新 ( UPDATE )消息； 被叫用 户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送振铃消息； 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫用户终端发送临 时响应确认（PRACK ) 消息； 被叫用户终端通过被叫应用服务器、 主叫应用 服务器向主叫用户终端发送确认消息； 被叫用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送视频共享请求确认消息； 主叫用户终端 通过主叫应用服务器、 被叫应用服务器向被叫用户终端发送响应确认消息。 步骤 131 ~ 134、 主叫用户终端与被叫用户终端建立实时传输协议 ( Real-time Transport Protocol, RTP )链路， 进行视频共享。
具体包括： 主叫用户终端与被叫用户终端建立 RTP链路； 被叫用户终端 向主叫用户终端发送接收者报告； 主叫用户终端向被叫用户终端发送发送者 报告； 主叫用户终端与被叫用户终端通过 RTP链路进行视频共享。
步裸 135 ~ 141、 被叫用户终端终止共享， 主叫用户终端以及被叫用户终 端释放通信链路， 视频共享结束。
具体包括： 被叫用户终端向主叫用户终端发送释放 RTP链路消息； 被叫 用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送释放消 息； 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫用户终端发 送释放确认消息。
图 1 所示的现有技术中， 在非宽带移动网络中的用户终端开机后需要激 活 GPRS连接， 并注册到 IMS核心网中， 宽带移动网络中的用户终端开机时 自动注册到 IMS核心网中， 任何一个网络中的用户终端在注册到 IMS核心网 之前不能与其他网络中的用户终端共享视频信息。 注册完成后， 双方首先通 过 SIP协议进行连接和媒体协商， 然后根据媒体协商的结果进行共享媒体的 传输。
当被叫用户终端处于非宽带移动网络中时， 由于被叫用户终端的 GPRS 连接通常处于非激活状态， 所以造成宽带移动网络中主叫用户终端的控制信 令无法正确路由到被叫用户终端。 如果为保证控制信令的正确路由， 要求非 宽带移动网络的用户终端始终处于 GPRS激活和 IMS注册状态， 不但会大量 占用分组域的资源， 而且保持 GPRS 的激活状态会增加用户终端的能耗， 通 常会缩短用户终端的待机时间。
图 1为现有技术中主叫以及被叫均为非宽带移动网络的用户终端之间实 现视频共享业务的方法。 其中， 主叫用户终端通过主叫 IMS核心网与主叫应 用服务器进行通信， 主叫应用服务器通过主叫 IMS核心网、 被叫 IMS核心网 与被叫应用服务器进行通信， 被叫应用服务器通过被叫 IMS核心网与被叫用 户终端进行通信， 以下为描述方便， 仅使用主叫用户终端、 主叫应用服务器、 被叫应用服务器、 被叫用户终端对本方法的实现方式进行描述。 参阅图 2所 示， 该方法包括以下步骤：
步骤 201、 主叫用户终端与被叫用户终端建立语音通话；
步骤 202 - 213、 主叫用户终端与被叫用户终端相互查询对方是否具备视 频共享能力。
具体包括： 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫 用户终端发送查询消息； 被叫用户终端通过被叫应用服务器、 主叫应用服务 器向主叫用户终端发送查询确认消息； 被叫用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送查询消息； 主叫用户终端通过主叫应用 服务器、 被叫应用服务器向被叫用户终端发送查询确认消息 200。
步骤 214 ~ 219、 主叫用户终端与被叫用户终端基于 SIP协议进行媒体协 商。
具体包括： 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫 用户终端发送视频共享请求； 被叫用户终端通过被叫应用服务器、 主叫应用 服务器向主叫用户终端发送媒体协商的结果；
步骤 220 ~ 246、 主叫用户终端与被叫用户终端建立临时通信。
具体包括： 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫 用户终端发送 PRACK消息； 被叫用户终端通过被叫应用服务器、主叫应用服 务器向主叫用户终端发送确认消息； 主叫用户终端通过主叫应用服务器、 被 叫应用服务器向被叫用户终端发送 UPDATE消息； 被叫用户终端通过被叫应 用服务器、 主叫应用服务器向主叫用户终端发送振铃消息； 主叫用户终端通 过主叫应用服务器、被叫应用服务器向被叫用户终端发送 PRACK消息；被叫 用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送确认消 息； 被叫用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发 送视频共享请求确认消息； 主叫用户终端通过主叫应用服务器、 被叫应用服 务器向被叫用户终端发送响应确认消息。 步骤 247 ~ 250、 主叫用户终端与被叫用户终端建立 RTP链路， 进行视频 共享。
具体包括： 主叫用户终端与被叫用户终端建立 RTP链路； 被叫用户终端 向主叫用户终端发送接收者^艮告； 主叫用户终端向被叫用户终端发送发送者 报告； 主叫用户终端与被叫用户终端通过 RTP链路进行视频共享；
步骤 251 257、 被叫用户终端终止共享， 用户终端 1以及用户终端 2释 放通信链路， 视频共享结束。
具体包括： 被叫用户终端向主叫用户终端发送 # t RTP链路消息； 被叫 用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送释放消 息； 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫用户终端发 送释放确认消息。
步骤 258、主叫用户终端与被叫用户终端恢复到电路交换域的语音通话状 态。
图 2所示的现有技术中， 主叫用户终端与被叫用户终端首先通过电路交 换域建立语音通话， 语音通话建立后， 主叫用户终端以及被叫用户终端自动 激活 GPRS连接， 并注册到 IMS核心网， 此后主叫用户终端与被叫用户终端 之间可以实现视频共享。
由于被叫用户终端不需要始终保持 GPRS激活以及 IMS注册状态， 所以解决 了用户终端能耗以及用户终端占用大量分组域资源的问题， 但依然存在一些 缺点： 第一， 视频共享必须首先进行电路交换域的语音呼叫， 对使用视频共 享业务造成一定程度的限制， 使用者可能因为语音呼叫的成本而放弃共享； 第二， 实际上大部分用户的语音呼叫只是拨打电话， 并不一定需要进行视频 共享， 而每次语音呼叫时激活分组域连接， 并且注册到 IMS核心网中， 会造成 GPRS资源的浪费； 第三， 无论主叫用户终端以及被叫用户终端是否注册到 IMS 核心网， 在用户终端之间如果没有建立语音互通， 就无法进行视频共享。 发明内容 本发明提供一种实现视频共享业务的方法、 系统及装置， 用于解决现有 技术中用户终端之间如果没有建立语音互通， 就无法进行视频共享的问题。
本发明实施例提供的一种实现视频共享业务的方法， 该方法包括以下步 骤：
主叫用户终端将含有被叫用户标识的视频共享请求发送给应用服务器； 所述应用服务器确定被叫用户终端没有在 IP多媒体子系统注册， 则通知 所述被叫用户终端注册， 所述被叫用户终端激活 GPRS连接并在所述被叫归 属网络的 IMS核心网进行注册；
主叫用户终端与被叫用户终端进行视频共享。
本发明实施例提供的一种实现视频共享的系统包括：
IMS, 用于转发用户终端与应用服务器之间的消息； 在主叫用户终端和被 叫用户终端注册后， 提供视频共享业务；
应用服务器， 用于在接收到来自主叫用户终端的含有被叫用户标识的视 频共享请求后， 如果确定被叫用户终端在 IMS没有注册， 通知被叫用户终端 注册；
主叫用户终端， 用于将含有被叫用户标识的视频共享请求发送给应用服 务器， 并在被叫用户终端注册后， 与被叫用户终端间建立共享会话；
被叫用户终端， 用于在接收到所述视频共享请求后， 如果没有注册到被 叫归属网络的 IMS核心网， 则激活 GPRS连接并在所述被叫归属网络的 IMS 核心网进行注册， 以及与主叫用户终端建立共享会话。
本发明实施例提供的一种实现视频共享业务的方法包括：
应用服务器收到含有被叫用户标识的视频共享请求后， 如果确定被叫用 户终端没有注册到 IMS, 则通知所述被叫用户终端注册；
在被叫用户终端激活 GPRS连接并在 IMS注册， 并且， 主叫用户终端和 已注册的被叫用户终端通过应用服务器建立共享会话后， 应用服务器向主叫 用户终端与被叫用户终端提供视频共享业务。 本发明实施例提供的一种应用 服务器包括： 注册判断单元， 用于在对所述视频共享请求中含有的被叫用户标识验证 通过后， 确定被叫用户终端在 IMS是否注册；
注册通知单元， 用于在确定被叫用户终端没有注册时， 通过短消息向被 叫用户终端发送注册到 IMS的通知；
视频共享请求单元， 用于在确定被叫用户终端在所述 IMS注册后， 向所 述被叫用户终端发送视频共享请求。 通过使用本发明实施例的方法、 系统及 装置， 可以在用户终端之间进行独立的视频共享， 不强制用户终端必须进行 语音呼叫在用户终端之间实现视频共享业务时， 便于用户终端之间实现视频 共享业务； 被叫用户终端在接收到被叫应用 ^良务器的注册通知后， 激活 GPRS 注册到 IMS核心网， 减少了 GPRS网络资源的空耗率。 在本发明实施例中当 主叫用户终端需要进行视频共享时， 由主叫用户终端将含有被叫用户标识的 视频共享请求发送给应用服务器， 在所述应用服务器确定被叫用户终端没有 注册到被叫归属网络的 IMS核心网注册后， 通知所述被叫用户终端注册到被 叫归属网络的 IMS核心网， 所述被叫用户终端激活 GPRS连接并在所述被叫 归属网络的 IMS核心网进行注册， 在被叫用户终端注册后与主叫用户终端实 现视频共享业务。 附图说明
图 1 为现有技术中作为主叫的宽带移动网络的用户终端与作为被叫的非 宽带移动网络的用户终端实现视频共享业务的信令流程示意图；
图 2为现有技术中主叫以及被叫均为非宽带移动网络的用户终端之间实 现视频共享业务的信令流程示意图；
图 3为本发明实施例中实现视频共享业务的系统的主要结构示意图； 图 4为本发明实施例中实现视频共享业务的系统的具体实施例一的主要 结构示意图；
图 5 为本发明实施例中实现视频共享业务的系统的具体实施例二的主要 结构示意图； 图 6为本发明实施例中实现视频共享业务的系统的具体实施例三的主要 结构示意图；
图 7为本发明实施例中应用服务器的主要结构示意图；
图 8 为实现本发明实施例中实现视频共享业务的方法的主要信令流程示 意图；
图 9为本发明实施例中实现视频共享业务的方法的主要流程示意图。 具体实施方式 动网络中的应用服务器通知被叫用户终端注册到 IMS核心网， 例如向被叫用 户终端发送短消息的方式， 在被叫用户终端注册到 IMS核心网后与主叫用户 终端实现视频共享业务。
下面结合附图对本发明的具体实施方式进行说明。
参见图 3所示， 本发明实施例提供的实现视频共享业务的系统主要包括: 主叫用户终端 31、 IMS核心网 32、 应用服务器 33、 被叫用户终端 34。
其中， 连接多个用户终端的 IMS核心网 32, 用于转发用户终端与应用服 务器 33之间的消息； 在主叫用户终端 31和被叫用户终端 34注册后， 提供视 频共享业务；
应用服务器 33 , 设置在应用系统中， 用于在接收到来自主叫用户终端 31 的含有被叫用户标识的视频共享请求后， 如果确定被叫用户终端 34在被叫归 属网络的 IMS核心网没有注册，通知被叫用户终端 34注册到被叫归属网络的 IMS核心网；
主叫用户终端 31 , 用于将含有被叫用户标识的视频共享请求发送给应用 服务器 33;
被叫用户终端 34, 用于在接收到所述视频共享请求后， 如果没有注册到 被叫归属网络的 IMS核心网，则激活 GPRS连接并在所述被叫归属网络的 IMS 核心网进行注册。 参见图 4所示， 当主叫用户终端和被叫用户终端属于不同网络时， 所述 应用服务器包括主叫应用服务器和被叫应用服务器， IMS 核心网包括主叫归 属网络的 IMS核心网和被叫归属网络的 IMS核心网。 所述主叫归属网络的 IMS核心网在接收到来自主叫用户终端的含有被叫用户标识的视频共享请求 后， 将所述视频共享请求发送给主叫应用服务器。 所述主叫应用服务器对所 述主叫用户终端验证通过后， 将所述视频共享请求发送给所述主叫归属网络 的 IMS核心网， 所述主叫归属网络的 IMS核心网将所述视频共享请求发送给 所述被叫归属网络的 IMS核心网。 所述被叫归属网络的 IMS核心网将所述视 频共享请求发送给被叫应用服务器。
所述被叫应用服务器确定被叫用户终端是否在被叫归属网络的 IMS核心 网注册，如果没有注册，则通知所述被叫用户终端注册到被叫归属网络的 IMS 核心网， 所述被叫用户终端激活 GPRS连接并在所述被叫归属网絡的 IMS核 心网进行注册。 在被叫应用服务器确定被叫用户终端注册到所述被叫归属网 络的 IMS核心网后， 所述被叫应用服务器向被叫用户终端转发主叫用户终端 的视频共享请求。 所述被叫应用服务器判断是否接收到来自被叫用户终端的 允许视频共享通知， 如果是， 则通过所述被叫归属网络的 IMS核心网、 所述 主叫归属网络的 IMS核心网向所述主叫应用服务器发送允许视频共享通知， 所述主叫应用服务器通过所述主叫归属网络的 IMS核心网向所述主叫用户终 端发送允许视频共享通知， 所述主叫用户终端与所述被叫用户终端进行视频 共享；否则，通过所述被叫归属网络的 IMS核心网、所述主叫归属网络的 IMS 核心网向所述主叫应用服务器发送拒绝视频共享通知， 所述主叫应用服务器 通过所述主叫归属网络的 IMS 核心网向主叫用户终端发送拒绝视频共享通 知。
所述被叫应用服务器包括： 注册判断单元 41、 注册通知单元 42、 视频共 享请求单元 43。
其中， 所述注册判断单元 41 , 用于在对所述视频共享请求中含有的被叫 用户标识验证通过后， 确定被叫用户终端在被叫归属网络的 IMS核心网是否 注册； 注册通知单元 42, 用于在所述注册判断单元 41确定被叫用户终端没有 注册时， 根据所述视频共享请求含有的被叫用户标识， 从所述被叫归属网络 的 IMS核心网查询获得被叫用户终端的电话统一资源标识， 根据该电话统一 资源标识向被叫用户终端发送注册到被叫归属网络的 IMS核心网的通知； 所 述视频共享请求单元 43，用于在所述注册判断单元 41确定被叫用户终端在被 叫归属网络的 IMS核心网注册后， 向被叫用户终端发送视频共享请求。
另外， 所述被叫应用服务器还包括： 验证单元 44, 用于验证所述视频共 享请求中含有的被叫用户标识， 并将验证结果发送给所述注册判断单元 41。
参见图 5所示，所述被叫归属网络的 IMS核心网包括：数据存储单元 51、 查询单元 52、 终端状态单元 53。 其中， 所述数据存储单元 51 , 用于保存用户 终端和电话统一资源标识的对应关系； 所述查询单元 52, 用于利用从所述数 据存储单元 51保存的所述对应关系中获得被叫用户标识对应的被叫用户终端 的电话统一资源标识； 终端状态单元 53, 用于在接收到被叫用户终端的注册 请求后， 向所述在线状态实体发送第三方注册请求。 所述注册通知单元 42可 以发送查询通知给查询单元 52, 其中包括视频共享请求中含有的被叫用户标 识。
当然， 该系统还可以进一步包括： 在线状态实体， 用于保存所述被叫用 户终端在被叫归属网络的 IMS核心网的在线状态信息， 这样， 所述注册判断 单元 41 , 可以根据在线状态实体中所述在线状态信息， 确定被叫用户终端在 被叫归属网络的 IMS核心网是否注册。
当所述注册判断单元 41根据所述状态信息确定被叫用户终端在被叫归属 网络的 IMS核心网注册时，所述视频共享请求单元 43向被叫用户终端发送视 频共享请求。 当所述注册判断单元 41根据所述状态信息确定被叫用户终端在 被叫归属网络的 IMS核心网没有注册时，所述注册通知单元 42利用所述视频 共享请求中含有的被叫用户标识从被叫归属网络的 IMS核心网获得被叫用户 终端的电话统一资源标识。 当所述注册通知单元 42没有从所述被叫归属网络 的 IMS核心网获得被叫用户终端的电话统一资源标识时， 所述注册通知单元 42通过被叫归属网络的 IMS核心网、主叫归属网络的 IMS核心网通知主叫应 用服务器，无法到达被叫用户终端；主叫应用服务器通过主叫归属网络的 IMS 核心网通知主叫用户终端， 无法到达被叫用户终端。
另外， 该系统还可以进一步包括： 短消息中心， 所述注册通知单元 42, 用于在所述注册判断单元 41 确定被叫用户终端没有注册到被叫归属网络的 IMS核心网时， 根据从被叫归属网络的 IMS核心网获得的被叫用户终端电话 统一资源标识， 将包含业务标识的短消息作为触发信令发送给短消息中心。 所述短消息中心， 用于在接收到所述短消息后， 向被叫用户终端发送该短消 · 息， 通知被叫用户终端注册到被叫归属网络的 IMS核心网。
所述被叫用户终端， 用于在接收到所述短消息后， 根据所述短消息中包 含的业务标识激活 GPRS连接并在被叫归属网络的 IMS核心网进行注册。 所 述终端状态单元 53， 在接收到被叫用户终端的注册请求后， 向所述在线状态 实体发送第三方注册请求。 当所述被叫归属网络的 IMS核心网注册成功后， 将被叫用户终端注册通知发送给所述在线状态实体， 所述在线状态实体将被 叫用户终端状态信息发送给所述被叫应用服务器， 这样， 当所述注册判断单 元 41根据所述状态信息确定所述被叫用户终端在所述被叫归属网络的 IMS核 心网注册时， 所述视频共享请求单元 43向所述被叫用户终端发送所述视频共 享请求。
参见图 6所示， 本发明实施例中的在线状态实体包括： 终端注册单元 61。 其中，终端注册单元 61用于记录被叫用户终端在 IMS核心网的状态信息。这 样， 所述注册判断单元 41 ,可以根据终端注册单元 61中被叫用户终端在 IMS 核心网的状态信息， 确定被叫用户终端在被叫归属网络的 IMS核心网是否注 册。
参见图 7所示， 本发明实施例提供的应用服务器主要包括： 注册判断单 元 71、 注册通知单元 72、 视频共享请求单元 73。
其中， 所述注册判断单元 71 , 用于在对视频共享请求中含有的被叫用户 标识验证通过后，确定被叫用户终端在被叫归属网络的 IMS核心网是否注册； 所述注册通知单元 72, 用于在确定被叫用户终端没有注册时， 从所述被 叫归属网络的 IMS核心网查询获得被叫用户终端的电话统一资源标识， 根据 该电话统一资源标识向被叫用户终端发送注册到被叫归属网络的 IMS核心网 的通知；
所述视频共享请求单元 73 , 用于在确定被叫用户终端在所述被叫归属网 络的 IMS核心网注册后 , 向所述被叫用户终端发送视频共享请求；
所述应用服务器还包括： 驗证单元 74， 用于验证所述视频共享请求中含 有的被叫用户标识， 并将验证结果发送给所述注册判断单元 71。
参见图 8所示， 实现本发明实施例提供的实现视频共享业务的信令流程 包括：
步骤 801 ~ 802、 主叫用户终端通过主叫应用服务器向被叫应用服务器发 送视频共享请求。
步驟 803 ~ 806、 被叫应用服务器查询被叫用户终端的在线状态。
具体包括： 被叫应用服务器向在线状态实体发送订阅状态信息请求； 在 线状态实体向被叫应用服务器发送请求确认消息； 在线状态实体向被叫应用 服务器发送状态信息； 被叫应用服务器向在线状态实体发送接收确认消息； 被叫应用服务器判断被叫用户终端是否注册到 IMS核心网， 如果是， 则执行 步骤 818, 否则执行步骤 807;
步驟 807、 被叫应用服务器查询被叫用户终端的电话统一资源标识。 具体包括： 被叫应用服务器根据被叫用户终端的 SIP U I, 在本地或向归 属用户服务器（HSS )、 E.164号码实体（ENUM )等实体查询被叫用户的电话 统一资源标识消息；
步骤 808 ~ 813、 被叫应用服务器通过短消息中心向被叫用户终端发送短 消息。
具体包括： 被叫应用服务器通过短消息中心发送短消息； 短消息中心向 被叫应用服务器发送确认消息； 短消息中心向被叫用户终端发送短消息； 被 叫用户终端向短消息中心发送确认消息； 被叫应用服务器通过主叫应用服务 器向主叫用户终端发送临时响应消息；
步骤 814 817、 IMS核心网第三方注册。
具体包括： 被叫用户终端收到短消息后， 向被叫归属 IMS核心网发送第 三方注册请求； IMS 核心网收到该注册请求后， 将第三方注册请求发送给在 线状态实体； 在线状态实体向 IMS核心网发送注册确认消息； 在线状态实体 向被叫应用服务器发送被叫用户终端注册通知； 被叫应用服务器通过在线状 态实体向被叫用户终端发送被叫用户终端注册通知响应消息。
步骤 818、 被叫应用服务器向被叫用户终端转发视频共享通知。
步驟 819 ~ 848、 主叫用户终端与被叫用户终端建立临时通信。
具体包括： 被叫用户终端通过被叫应用服务器、 主叫应用服务器向主叫 用户终端发送确认消息； 主叫用户终端通过主叫应用服务器、 被叫应用服务 器向被叫用户终端发送更新（UPDATE )消息； 被叫用户终端通过被叫应用服 务器、 主叫应用服务器向主叫用户终端发送振铃消息； 主叫用户终端通过主 叫应用服务器、被叫应用服务器向被叫用户终端发送 PRACK消息；被叫用户 终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送确认消息； 被叫用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送视 频共享请求确认消息； 主叫用户终端通过主叫应用服务器、 被叫应用服务器 向被叫用户终端发送响应确认消息；
步骤 849 ~ 852、 主叫用户终端与被叫用户终端建立 RTP链路， 进行视频 共享。
具体包括： 主叫用户终端与被叫用户终端建立 RTP链路； 被叫用户终端 向主叫用户终端发送接收者报告； 主叫用户终端向被叫用户终端发送发送者 报告； 主叫用户终端与被叫用户终端通过 RTP链路进行视频共享；
步骤 853 ~ 859、 被叫用户终端终止共享， 主叫用户终端以及被叫用户终 端释放通信链路， 视频共享结束。
具体包括： 被叫用户终端向主叫用户终端发送释放 RTP链路消息； 被叫 用户终端通过被叫应用服务器、 主叫应用服务器向主叫用户终端发送释放消 息； 主叫用户终端通过主叫应用服务器、 被叫应用服务器向被叫用户终端发 送释放确认消息；
步骤 860 ~ 863、 在线状态实体与 IMS核心网取消注册。
具体包括： 被叫应用服务器向在线状态实体发送取消订阅状态信息请求； 在线状态实体向被叫应用服务器发送取消订阅确认消息； IMS 核心网向在线 状态实体发送取消注册请求； 在线状态实体向 IMS核心网发送取消注册确认 消息。
参见图 9所示， 实现本发明实施例提供的实现视频共享业务的方法包括 如下步骤：
步骤 901、主叫用户终端通过主叫应用服务器向被叫应用服务器发送视频 共享请求， 被叫应用服务器收到后， 向在线状态实体发送订阅状态信息请求。
步骤 902、 在线状态实体收到来自被叫应用服务器的订阅状态信息请求 后， 向被叫应用服务器发送状态信息。
步骤 903、被叫应用服务器根据在线状态实体发送的状态信息判断被叫用 户终端是否注册到 IMS核心网， 如果是， 则执行步骤 911 , 否则， 执行步驟 904。
步骤 904、被叫应用服务器在被叫归属网络中查询被叫用户终端的电话号 码。
步骤 905、被叫应用服务器判断是否查询到被叫用户终端的电话号码， 如 果是， 执行步骤 906, 否则， 执行步骤 907。
步骤 906、被叫应用服务器直接或通知其他功能实体通过短消息中心按照 电话号码向被叫用户终端发送短消息， 执行步骤 908。
步骤 907、被叫应用服务器通过主叫应用服务器向主叫用户终端发送被叫 用户终端无法响应通知， 执行步骤 914。
步骤 908、 被叫用户终端收到来自短消息中心的短消息后， 注册到 IMS 核心网。
步骤 909、 IMS核心网向在线状态实体发起第三方注册， IMS核心网注册 成^后， 向在线状态实体发送被叫用户终端注册通知。
步驟 910、 在线状态实体接收到来自 IMS核心网的被叫用户终端注册通 知后， 向被叫应用服务器发送被叫用户终端注册通知。
步驟 911、被叫应用服务器向被叫用户终端转发主叫用户终端视频共享请 求。
步骤 912、被叫应用服务器判断是否接收到来自被叫用户终端的允许视频 共享通知， 如果是， 执行步骤 915, 否则， 执行步骤 913。
步骤 913、被叫应用服务器通过主叫应用服务器向主叫用户终端发送拒绝 视频共享通知。
步驟 914、主叫用户终端接收到主叫应用服务器发送的被叫用户终端无法 响应通知后， 取消视频共享请求。
步骤 915、 主叫用户终端与被叫用户终端进行视频共享。
步骤 916、 主叫用户终端与被叫用户终端结束视频共享后，被叫应用服务 器通知在线状态实体取消订阅被叫用户终端状态信息，被叫用户终端通知 IMS 核心网取消注册， 结束本流程。
主叫用户终端通过主叫应用服务器向被叫应用服务器发送视频共享请求 后， 被叫应用服务器需要判断被叫用户终端是否已注册到 IMS核心网， 被叫 应用服务器向被叫归属网络中的在线状态实体发送订阅被叫用户终端状态信 息请求。 由于在线状态实体用于记录被叫用户终端在 IMS核心网中的注册状 态， 在收到被叫应用服务器发送的请求后， 在线状态实体向被叫应用服务器 发送包含被叫用户终端的状态信息的通知。
被叫应用服务器在接收到来自在线状态实体的被叫用户终端状态信息 后， 判断被叫用户终端是否注册到 IMS核心网， 如果被叫应用服务器判断被 叫用户终端已注册到 IMS核心网， 则将视频共享请求转发给被叫用户终端。 被叫用户终端收到后， 与主叫用户终端进行媒体协商以及资源预留， 通过主 叫用户终端与被叫用户终端之间建立的 RTP链路进行视频共享。 如果被叫应 用服务器判断被叫用户终端未注册到 IMS核心网， 则被叫应用服务器在被叫 归属网络的本地数据库、 HSS或 ΕΝΌΜ实体中查询被叫用户终端的电话统一 资源标识， 如果被叫应用服务器判断查询到被叫用户终端的电话统一资源标 识， 则从电话统一资源标识中解析出被叫用户终端的电话号码， 被叫应用服 务器可以直接或通知主叫归属网络以及被叫归属网络中的其他功能实体通过 短消息中心向被叫用户终端发送短消息， 被叫用户终端收到短消息后注册到 IMS核心网。 如果被叫应用服务器判断未查询到被叫用户终端的电话统一资 源标识， 则回复被叫用户终端无法到达的响应， 主叫用户终端收到后， 取消 视频共享请求。
被叫用户终端注册到 IMS核心网后， IMS核心网向在线状态实体发送第 三方注册请求， 在线状态实体收到第三方注册请求， 将被叫用户终端上线通 知发送至被叫应用服务器， 或由被叫用户终端向被叫应用服务器直接发送上 线通知， 上线通知表明被叫用户终端已经注册。 被叫应用服务器收到在线状 态实体或被叫用户终端发送的上线通知后， 向被叫用户终端转发主叫用户终 端的视频共享请求， 被叫用户终端收到后， 与主叫用户终端进行媒体协商以 及资源预留， 通过主叫用户终端与被叫用户终端之间建立的 RTP链路进行视 频共享。 ·
主叫用户终端与被叫用户终端结束视频共享后， 被叫应用服务器通知在 线状态实体取消订阅被叫用户终端状态信息， 被叫用户终端通知 IMS核心网 取消注册。
当移动网络中不存在在线状态实体时， 应用服务器不需要从在线状态实 体处获取被叫用户终端的状态信息。 当主叫用户终端通过主叫应用服务器以 及被叫应用服务器向被叫用户终端发送视频共享请求后， 被叫应用服务器根 据来自 IMS核心网的被叫用户终端离线响应， 判断被叫用户终端是否注册到 IMS核心网， 如果被叫用户终端已经注册到 IMS核心网， 则主叫用户终端与 被叫用户终端进行视频共享， 如果被叫用户终端未注册到 IMS核心网， 则应 用服务器直接或通知系统中的其他功能实体通过短消息中心向被叫用户终端 发送短消息， 被叫用户终端接收到短消息后， 注册到 IMS核心网， 被叫用户 终端注册成功后与主叫用户终端实现视频共享业务。
通过使用本发明实施例的方法、 系统及装置， 在用户终端之间实现视频 共享业务时， 不必首先建立电路交换域的语音呼叫， 有利于用户终端之间视 频共享业务的实现； 用户终端之间不必每次建立语音呼叫并注册到 IMS核心 网， 节约了 GPRS资源； 无论用户终端是否注册到 IMS核心网， 只需由应用 服务器通知被叫用户终端注册到被叫归属网络的 IMS核心网， 在被叫用户终 端注册到所述被叫归属网络的 IMS核心网后， 用户终端之间实现视频共享业 务， 而不需要通过在用户终端之间建立电路交换域的语音呼叫才能够实现视 频共享业务。
显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种实现视频共享业务的方法， 其特征在于， 该方法包括以下步骤： 主叫用户终端将含有被叫用户标识的视频共享请求发送给应用服务器； 所述应用服务器确定被叫用户终端没有在 IP多媒体子系统注册， 通知所 述被叫用户终端注册， 所述被叫用户终端激活通用分组无线业务 GPRS连接 并进行 IMS注册；
主叫用户终端与被叫用户终端进行视频共享。
2、 根据权利要求 1所述的方法， 其特征在于， 所述主叫用户终端将含有 被叫用户标识的视频共享请求发送给应用服务器的步驟包括：
所述主叫用户终端将含有被叫用户标识的视频共享请求发送给被叫归属 网络的 IMS核心网;
所述被叫归属网络的 IMS核心网将该视频共享请求发送给被叫应用服务 器；
并且， 由所述被叫应用服务器确定所述被叫用户终端在所述 IMS是否注 册。
3、 根据权利要求 2所述的方法， 其特征在于， 所述主叫用户终端将含有 被叫用户标识的视频共享请求发送给被叫归属网络的 IMS核心网包括：
所述主叫用户终端将含有被叫用户标识的视频共享请求发送给主叫应用 服务器；
主叫应用服务器对主叫用户终端验证通过后， 将含有被叫用户标识的视 频共享请求发送给被叫归属网络的 IMS核心网。
4、 根据权利要求 2所述的方法， 其特征在于， 所述通知所述被叫用户终 端注册的步骤包括：
所述被叫应用服务器利用所述被叫用户标识从被叫归属网络获得所述被 叫用户终端的电话统一资源标识； 所述被叫应用服务器按照所述被叫用户终端的电话统一资源标识通过短 消息中心向被叫用户终端发送包含业务标识的短消息， 通知该被叫用户终端 注册到被叫归属网络的 IMS核心网。
5、 根据权利要求 4所述的方法， 其特征在于， 所述被叫应用服务器是利 用所述被叫用户标识从被叫归属网络的本地数据库中查询获得被叫用户终端 的电话统一资源标识， 或从被叫归属网络的 IMS核心网中归属用户服务器或 E.164号码实体中查询获得该被叫用户终端的电话统一资源标识。
6、 根据权利要求 4所述的方法， 其特征在于， 如果所述被叫应用服务器 确定被叫用户终端没有注册到 IMS, 且无法成功通知所述被叫用户终端注册 到 IMS, 则该方法进一步包括：
所述被叫应用服务器通过被叫归属网络的 IMS核心网、 主叫归属网络的 IMS核心网通知所述主叫用户终端， 无法到达该被叫用户终端。
7、 才艮据权利要求 4 所述的方法， 其特征在于， 所述被叫用户终端激活 GPRS连接包括：
所述被叫用户终端向 GPRS 网络发送注册请求， 当所述被叫用户终端收 到所述 GPRS网络发送的完成注册响应后， 确定激活 GPRS连接。
8、根据权利要求 4所述的方法， 其特征在于， 所述进行 IMS注册的步骤 包括：
所述被叫用户终端收到包含业务标识的短消息后， 通过 GPRS 网络向被 叫归属网络的 IMS核心网发送注册请求；
所述被叫归属网络的 IMS核心网收到该注册请求后， 对所述被叫用户终 端进行注册。
9、 根据权利要求 2所述的方法， 其特征在于， 在进行 IMS注册后， 该方 法进一步包括：
所述被叫归属网络的 IMS核心网通知所述被叫应用服务器被叫用户已经 注册到 IMS。
10、根据权利要求 9所述的方法，其特征在于， 所述被叫归属网络的 IMS 核心网通知所述被叫应用服务器被叫用户已经注册到 IMS, 包括： 所述被叫 归属网络的 IMS核心网向在线状态实体发送第三方注册请求； 所述在线状态 实体收到该第三方注册请求后， 向所述被叫应用服务器发送被叫用户终端注 册的通知； 或，
所述被叫归属网络的 IMS核心网向所述被叫应用服务器发送被叫用户终 端上线通知。
11、 根据权利要求 2所述的方法， 其特征在于， 所述被叫应用服务器是 根据如下步骤确定被叫用户终端是否注册：
所述被叫应用服务器向在线状态实体发送订阅状态信息请求；
所述在线状态实体收到该订阅状态信息请求后， 向所述被叫应用服务器 提供自身保存的该被叫用户终端的状态信息；
所述被叫应用服务器根据所述在线状态实体提供的所述状态信息， 确定 被叫用户终端是否在所述被叫归属 IMS核心网注册。
12、 根据权利要求 2所述的方法， 其特征在于， 所述被叫应用服务器收 到被叫用户终端通过被叫归属 IMS核心网发送的上线通知后， 记录所述被叫 用户终端已注册， 则所述被叫应用服务器是根据自身所记录的信息确定被叫 用户终端是否注册。
13、 根据权利要求 2所述的方法， 其特征在于， 所述主叫用户终端与被 叫用户终端进行视频共享包括：
所述被叫应用服务器向被叫用户终端发送主叫用户终端的视频共享请 求；
所述被叫应用服务器判断是否接收到来自被叫用户终端的允许视频共享 通知， 如果是， 则向所述主叫用户终端发送允许视频共享通知， 所述主叫用 户终端与所述被叫用户终端实现视频共享； 否则， 向所迷主叫用户终端发送 拒绝视频共享通知。
14、 一种实现视频共享业务的方法， 其特征在于， 该方法包括以下步骤： 应用服务器收到含有被叫用户标识的视频共享请求后 , 如果确定被叫用 户终端没有注册到 IMS, 则通知所述被叫用户终端注册；
在被叫用户终端激活 GPRS连接并在 IMS注册， 并且， 主叫用户终端和 已注册的被叫用户终端通过应用服务器建立共享会话后 , 应用服务器向主叫 用户终端与被叫用户终端提供视频共享业务。
15、 根据权利要求 14所述的方法， 其特征在于， 所述通知所述被叫用户 终端注册的步骤包括：
所述应用服务器利用所述被叫用户标识从被叫归属网絡获得所述被叫用 户终端的电话统一资源标识；
所述应用服务器按照所述被叫用户终端的电话统一资源标识通过短消息 中心向被叫用户终端发送包含业务标识的短消息， 通知该被叫用户终端注册 到被叫 IMS。
16、 一种实现视频共享的系统， 其特征在于， 该系统包括：
IMS, 用于转发用户终端与应用服务器之间的消息； 在主叫用户终端和被 叫用户终端注册后， 提供视频共享业务；
应用服务器， 用于在接收到来自主叫用户终端的含有被叫用户标识的视 频共享请求后， 如果确定被叫用户终端在 IMS没有注册， 通知被叫用户终端 注册；
主叫用户终端， 用于将含有被叫用户标识的视频共享请求发送给应用服 务器；
被叫用户终端，用于在接收到所述视频共享请求后，如果没有注册到 IMS， 则激活 GPRS连接并在 IMS进行注册。
17、 根据权利要求 16所述的系统， 其特征在于， 所述应用服务器包括主 叫应用服务器和被叫应用服务器， 所述 IMS包括主叫归属网络的 IMS核心网 和被叫归属网络的 IMS核心网，
所述主叫归属网络的 IMS核心网， 用于在接收到来自主叫用户终端的视 频共享请求后， 将所述视频共享请求发送给主叫应用服务器； 在所述主叫应 用服务器对视频共享请求中含有的被叫用户标识验证通过后 , 将视频共享请 求发送给被叫归属网络的 IMS核心网；
所述主叫应用服务器， 用于对所述视频共享请求中含有的被叫用户标识 验证通过后 , 将所述视频共享请求发送给主叫归属网络的 IMS核心网；
所述被叫归属网络的 IMS核心网, 用于将所述视频共享请求发送给被叫 应用服务器； 在被叫应用服务器对视频共享请求中含有的被叫用户标识验证 通过后， 将所述视频共享请求发送给被叫用户终端； 根据收到的被叫用户终 端的注册请求， 对被叫用户终端进行注册；
所述被叫应用服务器， 用于在对所述视频共享请求中含有的被叫用户标 识验证通过后， 如果被叫用户终端在被叫归属网络的 IMS核心网没有注册， 向被叫用户终端发送注册到被叫归属网络的 IMS核心网的通知； 在确定被叫 用户终端在被叫归属网络的 IMS核心网注册后， 向被叫用户终端发送视频共 享请求。
18、 根据权利要求 17所述的系统， 其特征在于， 所述被叫应用服务器包 括：
注册判断单元， 用于在对所述视频共享请求中含有的被叫用户标识验证 通过后， 确定被叫用户终端在被叫归属网絡的 IMS核心网是否注册；
注册通知单元， 用于在确定被叫用户终端没有注册时， 从所述被叫归属 网络的 IMS核心网查询获得被叫用户终端的电话统一资源标识， 根据该电话 统一资源标识向被叫用户终端发送注册到被叫归属网络的 IMS 核心网的通 知；
视频共享请求单元，用于在确定被叫用户终端在所述被叫归属网络的 IMS 核心网注册后， 向所述被叫用户终端发送视频共享请求。
19、 根据权利要求 18所述的系统， 其特征在于， 所述被叫应用服务器还 包括：
验证单元， 用于验证所述视频共享请求中含有的被叫用户标识， 并将验 证结果发送给所述注册判断单元。
20、 根据权利要求 18所述的系统， 其特征在于， 该系统进一步包括： 在线状态实体， 用于保存并用于提供给所述注册判断单元的所述被叫用 户终端在被叫归属网络的 IMS核心网中的状态信息。
21、 根据权利要求 18所述的系统， 其特征在于， 该系统进一步包括： 短 消息中心， 用于向所述被叫用户终端发送含有业务标识的短消息， 以转发所 述注册通知单元向被叫用户终端发送注册到被叫归属网络的 IMS核心网的通 知。
22、 一种应用服务器， 其特征在于， 包括：
注册判断单元， 用于在对视频共享请求中含有的被叫用户标识验证通过 后， 确定被叫用户终端在 IMS核是否注册；
注册通知单元， 用于在确定被叫用户终端没有注册时， 向被叫用户终端 发送注册到 IMS的通知；
视频共享请求单元， 用于在确定被叫用户终端在 IMS注册后， 向所述被 叫用户终端发送视频共享请求。
23、 根据权利要求 22所述的应用服务器， 其特征在于， 所述应用服务器 还包括：
验证单元， 用于验证所述视频共享请求中含有的被叫用户标识， 并将验 证结果发送给所述注册判断单元。
24、 根据权利要求 22所述的应用服务器， 其特征在于， 所述通知为含有 业务标识的短消息。
PCT/CN2007/003390 2006-12-01 2007-11-30 Procédé, système et appareil permettant la mise en place de service de partage vidéo WO2008064575A1 (fr)

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