WO2009049531A1 - Procédé, dispositif de commande de passerelle réseau multimédia et serveur d'application pour mettre en œuvre l'intercommunication des tonalités de retour d'appel personnalisées - Google Patents

Procédé, dispositif de commande de passerelle réseau multimédia et serveur d'application pour mettre en œuvre l'intercommunication des tonalités de retour d'appel personnalisées Download PDF

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Publication number
WO2009049531A1
WO2009049531A1 PCT/CN2008/072617 CN2008072617W WO2009049531A1 WO 2009049531 A1 WO2009049531 A1 WO 2009049531A1 CN 2008072617 W CN2008072617 W CN 2008072617W WO 2009049531 A1 WO2009049531 A1 WO 2009049531A1
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WO
WIPO (PCT)
Prior art keywords
signaling
video
crbt
multimedia
ring back
Prior art date
Application number
PCT/CN2008/072617
Other languages
English (en)
French (fr)
Inventor
Haopeng Zhu
Jianmin Liu
Yichu Zheng
Yu Sun
Haoyu Wang
Lingyan Wu
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 AT08839043T priority Critical patent/ATE552707T1/de
Priority to EP08839043A priority patent/EP2131613B1/en
Priority to CN200880001439.9A priority patent/CN101647296B/zh
Publication of WO2009049531A1 publication Critical patent/WO2009049531A1/zh
Priority to US12/622,631 priority patent/US8553869B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/102Gateways
    • H04L65/1043Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/42017Customized ring-back tones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2201/00Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/50Telephonic communication in combination with video communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Arrangements for interconnection between switching centres
    • H04M7/12Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1225Details of core network interconnection arrangements
    • H04M7/123Details of core network interconnection arrangements where the packet-switched network is an Internet Protocol Multimedia System-type network

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a method for implementing CRBT interworking, a multimedia gateway control device, and a multimedia CRBT application server.
  • the CRBT service is a multimedia service, which is a service in which a mobile phone user and a fixed-line user (including a fixed-line telephone and a wireless fixed-line subscriber) customize a special ring-back tone to replace the traditional ring-back tone displayed to the user who dials the call.
  • a mobile phone user and a fixed-line user including a fixed-line telephone and a wireless fixed-line subscriber
  • customize a special ring-back tone to replace the traditional ring-back tone displayed to the user who dials the call.
  • different product names may be used to identify the service.
  • the existing system and method for the Multimedia Ring Back Tone implements a 3G CS domain (Circuit Switched domain) CRBT function and a 3G PS domain (Packet Switched domain) CRBT function (including IMS). Domain (IP Multimedia Subsystem, Internet Protocol Multimedia Subsystem) ring tones).
  • 3G CS domain Circuit Switched domain
  • 3G PS domain Packet Switched domain
  • IMS Internet Protocol Multimedia Subsystem
  • the circuit domain user calls the IMS domain user (video call) the calling terminal
  • the mobile switching center the MSC Server, Mobile Service Switching Center-Server
  • the embodiment of the present invention provides a method for implementing CRBT intercommunication, a multimedia gateway control device, and an application server, to solve the problem of playing a video ring back tone when a CS domain user calls an IMS domain user during network interworking. question.
  • an embodiment of the present invention provides a method for implementing color ring back tone communication.
  • the multimedia color ring back tone service is triggered.
  • the method includes the steps of: receiving a message sent by the multimedia color ring back tone application server.
  • the signaling includes video ring back tone information. If it is determined according to the signaling that the video ring back tone is played to the calling terminal, the mobile switching center to which the calling terminal belongs is notified to connect to the calling terminal.
  • the embodiment of the invention further provides a multimedia gateway control device, including:
  • a receiving unit configured to receive signaling sent by a multimedia CRBT application server, where the signaling includes video ring back tone information
  • a determining unit configured to determine, according to the signaling received by the receiving unit, whether to play a video ring back tone to the calling terminal, and send the determination result;
  • the notifying unit is configured to notify the mobile switching center to which the calling terminal belongs to connect to the calling terminal when receiving the judgment result of the determining unit.
  • the embodiment of the present invention further provides a multimedia CRBT application server, where the mode applied to the CRBT is a gateway mode, including:
  • a receiving unit configured to receive a call request sent by the multimedia gateway control entity when the circuit domain user initiates a call to the multimedia ring back tone user of the multimedia subsystem
  • a determining unit configured to determine whether the call request is a call request sent by the multimedia gateway control entity, further determine whether the video call request is from the 3G CS domain, and send the determination result;
  • the added or connected unit is configured to receive
  • the CRBT service identifier is added to the signaling for transmitting the CRBT early media, or the signaling indicating the establishment of the communication link is sent to the multimedia gateway control entity to instruct the multimedia gateway control entity to notify the mobile switching center.
  • the calling terminal is connected.
  • the indication signaling may be sent after receiving the called ringing signal.
  • the multimedia CRBT service when the circuit domain user initiates a call to the multimedia CRBT user of the multimedia subsystem, the multimedia CRBT service is triggered, and the multimedia CRBT server sends signaling to the multimedia gateway control server, where the The order includes video ring tones information, and then according to the The signaling determines whether to play the video ring back tone to the calling terminal, and if so, notifies the mobile switching center to which the calling terminal belongs to connect to the calling terminal.
  • the embodiment of the present invention can implement the interworking between the CS domain CRBT and the IMS CRBT.
  • the IMS domain user calls the IMS user (video call)
  • the IMS video CRBT can be played to the calling party, which improves the user experience.
  • FIG. 1 is a schematic diagram of reference points and network elements related to an IMS domain involved in a CRBT interworking according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for implementing CRBT interworking according to an embodiment of the present invention
  • FIG. 3 is a specific signaling flowchart of a method for implementing CRBT interworking according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for implementing CRBT interworking in a server mode according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for implementing CRBT interworking in a gateway mode according to an embodiment of the present invention
  • FIG. 6 is a flow chart of an inter-communication command using a gateway mode according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of another inter-communication command using a gateway mode according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a mutual communication order using a server mode according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a multimedia control device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a multimedia CRBT application server according to an embodiment of the present invention.
  • the reference points and network elements related to the IMS domain involved in the CRBT interworking are introduced. As shown in FIG. 1, the reference points (ie, interfaces) specifically included are:
  • ISC used for IMS domain CRBT service server and service call session control function (S-CSCF,
  • Mr Used for message interaction between the Multimedia Resource Function Controller (MRFC) and the S-CSCF, used when playing the IMS domain ring back tone.
  • MRFC Multimedia Resource Function Controller
  • BGCF Multimedia Gateway Control
  • S-CSCF Breakout Gateway Control Function
  • Mw is the interface between the CSCFs, used for message interaction between CSCFs, and used by the CS domain to play back ring tones for IMS users.
  • Mg The Media Gateway Control Function (MGCF) converts the Integrated Service Data Network User Part (ISUP) signaling into SIP signaling and forwards it to the Inquiring Call Session Control Function (I-CSCF). , Interrogating- Call Session Control Function ).
  • ISUP Integrated Service Data Network User Part
  • Mj Used for message interaction between the BGCF and the MGCF in the same IMS network.
  • Mb Used for media interaction between the Multimedia Resource Function Processor (MRFP) and the User Plane Entity IP Multimedia Gateway Function (IM-MGW, Internet Protocol multimedia-Media GateWay).
  • MRFP Multimedia Resource Function Processor
  • IM-MGW Internet Protocol Multimedia Gateway Function
  • the MGCF is a gateway that enables communication between an IMS user and a CS user. All call control signaling from the CS user points to the MGCF, which is responsible for protocol conversion between ISUP/Bearer Independent Call Control (BICC) and SIP.
  • BICC Bill Cipheral Call Control
  • the IM-MGW provides a user plane link between the CS network and the IMS that terminates the bearer channel and media stream from the CS network and performs the transition between these terminations.
  • VIG Video Interworking Gateway
  • the VIG function can be built in the network device such as MGCF, or a dedicated video interworking network element can be used to process the video. Interoperability.
  • the VIG function built in the MGCF/IM-MGW is taken as an example for detailed description.
  • the MGCF/IM-MGW and the BGCF form an interworking network element to support the interworking of the circuit domain videophone and the multimedia ring back tone.
  • the MRS which is a multimedia resource server of the IMS domain, serves as a ring back tone server to provide voice and video ring tones for IMS users.
  • FIG. 2 is a flowchart of a method for implementing a CRBT interworking according to an embodiment of the present invention.
  • the method includes: Step 201: Receive signaling of the call sent by a multimedia CRBT application server, where the signaling includes video ring back tone information;
  • Step 202 Determine, according to the signaling, whether to play a video ring back tone to the calling terminal, and if yes, notify the mobile switching center to which the calling terminal belongs to connect to the calling terminal;
  • Step 203 Control to establish a communication link with the calling terminal to play the video ring back tone.
  • step 203 is an optional step.
  • the executor of the embodiment of the present invention may be a multimedia control function entity, such as an MGCF or the like, or may be a VIG, but the executor of the embodiment of the present invention takes the MGCF as an example.
  • the MSC Server to which the calling terminal belongs can obtain information about whether to play the video ring back tone to the calling party, and can receive the called ringing signal. Determine whether the caller needs to be connected, so as to play the IMS video ring back tone to the circuit domain user.
  • MGCF parses the signaling sent by the CRBT application server (AS, Application Server) (such as 183 (Session Progress) signaling carrying the early media), according to the information carried in the signaling
  • the information determines whether to play the video ring back tone to the calling party, and if yes, sends a notification to the calling MSC Server (can be sent by Call Progression CPG (Call ProGress) signaling or ringing signaling, or can be sent by other signaling, the present invention
  • the calling MSC Server is instructed to connect to the calling party, and establish a communication link with the calling terminal to play the video ring back tone.
  • the implementation process is shown in Figure 3, specifically:
  • Step 301 The MRBTAS sends a signaling to the MGCF, where the signaling carries the video ring back tone information, that is, if the video ring back tone is to be played to the calling party, the video ring back tone information is carried in the sent signaling, and the specific signaling may be 183.
  • the video ring back tone information refers to information that can be used to determine whether to play a video ring back tone to the calling party, such as a video session description protocol (SDP Session Description Protocol) in the early ringtone media, early ring tones Media service identification, signaling related Header domain (such as the early media header field P-Early-Media or CRBT service logo, etc.);
  • Step 302 After receiving the signaling, the MGCF determines whether to play the video ring back tone to the calling party, and if the process assumes that the determination result is “Yes”, step 303 is performed;
  • Step 303 After receiving the ringing signal of the called party, the MGCF sends a notification to the calling MSC Server, informing the calling MSC Server to connect to the calling terminal, and not charging;
  • Step 304 The calling MSC Server sends a connection command to the calling terminal to connect the calling party.
  • the MGCF controls the IM-MGW to establish a communication link with the calling terminal
  • Step 306 The media channel is established, and the MRBT AS instructs the MRS to play the ring back tone to the calling party.
  • early media server mode early media gateway mode
  • the first embodiment CRBT interworking in the early media server mode:
  • FIG. 4 it is a flowchart of a method for implementing CRBT interworking in a server mode according to an embodiment of the present invention, where the method specifically includes:
  • Step 401 The calling MSC Server (indicated by the calling MSC in the figure) sends a call request to the MGCF.
  • Step 402 The MGCF forwards the received call request to the MRBT AS.
  • Step 403 The MRBT AS uniformly processes the call sent by the MGCF and the received IMS call, that is, it does not need to identify whether the MGCF sends the invitation (Invite) sent by the IMS user terminal, and if the current call is a video call and is called a CRBT user,
  • the MRBT AS carries the CRBT early media including the video SDP in the reply signaling.
  • the method may further include: the MRBT AS identifies, in the signaling, whether the early media carried in the signaling is the CRBT early media.
  • the CRBT service identifier can be carried by adding a SIP header field, extending the value of a header field, or extending the SDP, indicating that the signaling carries the early ringtone media.
  • Service-Type represents a generic or business type.
  • Step 404 After receiving the signaling that is sent by the MRBT AS, the MGCF determines whether the signaling carries the early media including the video SDP, and if yes, determines that the video CRBT is to be played to the calling terminal.
  • the method may further include: MGCF
  • the early media carried in the signaling is determined by the CRBT service identifier carried in the signaling as the early ringtone media. That is, the MGCF determines to play the video ring back tone to the calling party according to the CRBT service identifier and the video SDP.
  • Step 405 The MGCF determines that the video ring back tone needs to be played to the calling user, and sends a notification to the calling party after receiving the ringing signal of the called party (for example, by using a CPG, etc.), instructing the calling MSC Server to connect to the calling terminal.
  • FIG. 5 is a schematic flowchart of a method for implementing a CRBT interworking in a gateway mode according to an embodiment of the present invention, where the method specifically includes:
  • Step 501 The calling MSC Server (represented by the calling MSC in the figure) sends a call request to the MGCF, where the call request is a video call request of the 3G CS domain;
  • Step 502 The MGCF forwards the received call request to the MRBT AS.
  • the MGCF can add a 3G CS video call identity to the forwarded call request, indicating that this is a video call request from the 3G CS domain.
  • Step 503 The MRBT AS determines whether the received video call request is a video call request sent by the MGCF, and if yes, adds a CRBT service identifier to the 183 signaling that carries the CRBT media, indicating that the signaling carries the CRBT media, and It is sent to the MGCF.
  • the method may further include: Step 504: Carrying video ring back tone information in the signaling sent by the MRBT AS to the MGCF, specifically, by adding a SIP header field, extending a certain header field value, or The SDP is extended to carry the CRBT service identifier, but is not limited thereto.
  • the MRBT AS may additionally send indication signaling (by 183 signaling, update signaling, etc., but not limited to this) to instruct the MGCF to notify the MSC Server to connect to the calling party.
  • indication signaling by 183 signaling, update signaling, etc., but not limited to this
  • step 503 may also be omitted. That is, in step 502, the MGCF does not need to add a 3G CS video call identifier to the forwarded call request, and the MRBT AS uniformly processes the call sent by the MGCF and receives the call.
  • the IMS call that is, the MVCF or the IMS user terminal sends an invitation (Invite). If the current call is a video call and is called a CRBT user, the MRBT AS carries the video SDP in the reply signaling. CRBT media, and P-Early-Media header fields used to indicate early media direction attributes.
  • Step 505 After receiving the signaling sent by the MRBT AS, the MGCF determines whether the signaling carries the CRBT media including the video SDP or determines whether the signaling is indication signaling, and if yes, determines that the video CRBT is to be played to the calling terminal. ;
  • Step 506 If the MGCF determines that the video ring back tone is to be played to the calling terminal, after receiving the called ringing signal, the MGCF sends a notification to the calling party (such as by CPG signaling), instructing the calling MSC Server to connect to the calling terminal.
  • the calling party such as by CPG signaling
  • FIG. 6 is a flowchart of a mutual communication command in a gateway mode according to an embodiment of the present invention, which includes: a circuit domain calling user calling an IMS user, and playing an IMS video ring back tone.
  • the signaling interaction between the calling MSC Server and the GMSC, the GMSC and the MGCF, and the signaling forwarding through the core network (S-CSCF, P-CSCF) and the service triggering process are also omitted.
  • the CS user calls the IMS user, and the call signaling is converted by the MGCF, and then routed to the S-CSCF to trigger the IMS domain CRBT service AS.
  • the specific signaling process includes: Step 601 ⁇ Step 603:
  • the calling terminal initiates a Setup Setup message, which is routed to the MGCF via the MSC Server and the GMSC Server (omitted from the figure).
  • the MGCF After receiving the IAM (BICC), the MGCF converts the Invite (sdp-mgw) to the IMS domain CRBT service, and the Invite signaling carries the CS domain video call identifier.
  • Step 604 ?? Step 610 The MRBTAS parses the video call request from the MGCF according to the identifier carried in the signaling, and initiates a session request to the MRS and the called terminal to perform media negotiation.
  • the specific negotiation process is as shown in the figure. Show
  • the MGCF controls the IM-MGW to establish a media connection with the MRS;
  • the MRBT AS sends a 180 reliable response to the MGCF, which is converted into Ringing Signaling ACM (Address Complete Message) (BICC) by the MGCF. Calling the end office to send a ringing signal (Alerting) to the calling terminal;
  • ACM Address Complete Message
  • Step 618 to step 620 The MRBT AS sends a special update (Update) signaling to the MGCF, where the update command carries the information of "playing a video ringback to the calling party", and the MGCF determines that it wants to play to the calling party according to the received Update command.
  • the calling terminal and the MGCF/IM-MGW perform H.245 capability negotiation to establish a media connection, for example, the MGCF controls the IM-MGW to establish a media connection with the calling terminal;
  • the H.245 is a multimedia communication control signaling protocol, which is used to solve The call media type problem, and before the call is established, the protocol needs to be used to establish the media stream while managing the call after the call is established.
  • rack temporary reliable response
  • the MRS plays the ring back tone to the calling terminal.
  • Step 625 The called terminal answers and returns 200 to the MRBT AS.
  • Step 626 to step 627 The MRBTAS uses the steps S606 to 609 to negotiate the SDP with the called terminal and the MGCF to perform the redirect redirection.
  • the MGCF controls the IM-MGW to establish a media connection with the called terminal.
  • ANM response signaling ANM
  • Step 633 After receiving the Ack sent by the MGCF, the MRBT AS instructs the MRS to remove the connection.
  • the call between the calling terminal and the called terminal is established.
  • FIG. 7 is a flowchart of another inter-communication command in a gateway mode according to an embodiment of the present invention, which specifically includes: a calling party in a circuit domain calls an IMS user, and plays an IMS video ring back tone.
  • the signaling interaction between the calling MSC Server and the GMSC, the GMSC and the MGCF, and the signaling forwarding and service triggering process through the core network are also omitted.
  • the CS user calls the IMS user, and the call signaling is converted by the MGCF, and then routed to the S-CSCF to trigger the IMS domain CRBT service AS.
  • the specific signaling process includes:
  • Step 701 ?? Step 703 The calling terminal initiates a Setup call setup message, which is routed to the MGCF via the MSC Server and the GMSC Server (omitted from the figure).
  • the MGCF After receiving the IAM (BICC), the MGCF converts to Invite (SIP) and triggers the IMS domain CRBT service MRBTAS;
  • Step 704 ⁇ Step 710 The MRBT AS initiates a session request to the MRS and the called terminal to perform media negotiation, and the specific negotiation process is as shown in the figure;
  • Steps 711 to 713 The MRBTAS sends a 183 reliable response to the MGCF, and carries the SDP after the MRS negotiation, and the signaling includes the CRBT service identifier, indicating that the SDP is the CRBT early media SDP.
  • the MGCF controls the IM-MGW to establish a media connection with the MRS, and the MGCF parses the received 183 signaling to determine whether to play the video ring back tone to the calling party (this process assumes YES, that is, the 183 carries
  • the SDP is the CRBT early media SDP and the SDP includes video media information
  • the MRBT AS sends a 180 reliable response to the MGCF, and after the MGCF converts to the ringing signaling ACM (BICC), the calling end station sends an Alerting to the calling terminal;
  • BICC ringing signaling ACM
  • H.245 capability negotiation establishing a media connection, for example: MGCF controls IM-MGW to establish a media connection with the calling terminal;
  • steps 718-719 may also be omitted.
  • the ACM (BICC) ringing signaling in step 716 indicates that the MSC Server is connected to the calling terminal, and the calling terminal and the MGCF/IM-MGW perform H.245.
  • Ability negotiation, establish media connection for example: MGCF controls IM-MGW to establish media connection with calling terminal;
  • Step 720 to step 723 The MRBT AS receives the temporary reliable response sent by the MGCF, and then instructs the MRS to play, and the MGCF controls the IM-MGW to complete the conversion of the media streams on both sides.
  • the MRS plays the ring back tone to the calling terminal.
  • Step 724 The called party answers, and the called terminal returns 200 to the MRBT AS.
  • Step 725 to step 726 The MRBT AS uses the steps S706 and 709 to negotiate the SDP and the MGCF to negotiate with the called terminal, and the MGCF controls the IM-MGW to establish a media connection with the called terminal.
  • Step 727 The MRBT AS returns to the called terminal to Ack.
  • ANM response signaling ANM
  • Step 732 After receiving the Ack sent by the MGCF, the MRBT AS instructs the MRS to remove the connection.
  • FIG. 8 is a flowchart of a cross-communication command in a server mode according to an embodiment of the present invention, which includes: a circuit domain calling a call IMS user, and playing an IMS video ring back tone.
  • the figure also omits the signaling interaction between the calling MSC Server and the GMSC, the GMSC and the MGCF, and the signaling forwarding and service triggering process through the core network (S-CSCF, P-CSCF).
  • S-CSCF the core network
  • P-CSCF the core network
  • Step 801 ?? Step 803 The calling terminal initiates a Setup call setup message, which is routed to the MGCF via the MSC Server and the GMSC Server (omitted from the figure).
  • the MGCF After receiving the IAM (BICC), the MGCF converts to Invite (SIP) and triggers the IMS domain CRBT service MRBT AS;
  • the MRBT AS initiates a call request to the MRS, and the MRS returns a 200 response to the MRBT AS, where the signaling carries an early media request (sdp-mrbt) for playing the CRBT.
  • sdp-mrbt early media request
  • the negotiated SDP (sdp-mrbt) may include a CRBT service identifier, indicating that the carried sdp-mrbt is the early ringtone media.
  • the MGCF determines that the caller wants to play the video ringback according to sdp-mrbt.
  • Step 811 to step 813 The MGCF/IM-MGW performs the CRBT early media negotiation according to its own capability, and sends the negotiated CRBT early media (sdp-mrbt') to the MRBT AS through the prack signaling, and the MRBTAS uses the ACK to sdp-mrbt. , sent to the MRS and returned 200 signaling to the MGCF.
  • MGCF controls IM-MGW to establish media connection with MRS
  • the MRBT AS sends a 180 reliable response to the MGCF, and after the MGCF converts to the ringing signaling ACM (BICC), the calling end station sends an Alerting to the calling terminal;
  • BICC ringing signaling ACM
  • the server connects to the calling terminal, and no charging is performed at this time.
  • the calling terminal and the MGCF/IM-MGW perform H.245 capability negotiation to establish a media connection, for example: MGCF controls the IM-MGW and the calling terminal to establish Media connection
  • steps 818-819 may also be omitted.
  • the ACM (BICC) ringing signaling in step 816 indicates that the MSC Server is connected to the calling terminal, and the calling terminal and the MGCF/IM-MGW perform the H.245 capability.
  • Negotiate, establish a media connection for example: MGCF controls the IM-MGW to establish a media connection with the calling terminal;
  • Step 824 ⁇ Step 829 The called party answers, the called terminal returns 200 to MRBTAS, and the MRBTAS returns Ack to the called terminal and sends a 200 response to the MGCF, and the MGCF converts to the response signaling ANM (BICC) and then the calling party is directed to the main Call the terminal to send Connect
  • Step 830 After receiving the Ack sent by the MGCF, the MRBT AS instructs the MRS to remove the connection.
  • the call between the calling terminal and the called terminal is established.
  • the embodiment of the present invention further provides a multimedia control device, and a schematic structural diagram thereof is shown in FIG. 9.
  • the device includes: a receiving unit 91, a determining unit 92, and a notifying unit 93.
  • the receiving unit 91 is configured to receive signaling for sending a call by the multimedia CRBT application server, where the signaling includes video ring back tone information, and specifically includes: a video session description protocol in the early ringtone media; or a video in the early ringtone media a session description protocol and a color ring service identifier;
  • the determining unit 92 configured to determine, according to the signaling received by the receiving unit, whether to play a video ring back tone to the calling terminal, and send a determination result;
  • the notification unit 93 configured to Upon receiving the judgment result of the judgment unit, the mobile switching center of the calling terminal is notified to turn on the calling terminal.
  • the embodiment of the present invention further provides a multimedia CRBT application server, where the mode for the CRBT is the gateway mode, and the structure is as shown in FIG. 10, the device includes: a receiving unit 101, a judging unit 102, and adding or receiving Passing unit 103.
  • the receiving unit 101 is configured to: when the circuit domain user initiates a call to the multimedia CRBT user of the multimedia subsystem, the multimedia gateway controls the call request sent by the entity; the determining unit 102 is configured to determine whether the call request is a multimedia The gateway controls the call request sent by the entity, and sends a judgment result; the adding or turning on the unit 103, When receiving the judgment result of the transmission of the judging unit 102, adding a CRBT service identifier to the signaling for transmitting the CRBT early media, or sending the signaling indication multimedia to the multimedia gateway control entity after receiving the called ringing signal The gateway control entity notifies the calling MSC Server to connect to the calling terminal.
  • the beneficial effects of the embodiments of the present invention are as follows:
  • the interworking between the CS domain CRBT and the IMS CRBT can be implemented.
  • the IMS user calls the IMS user (video call)
  • the IMS video ringtone can be played to the calling party, which improves the user experience.
  • the CRBT AS and the media resource server MRS are deployed as two different network entities, and may be the same network entity when implemented.
  • the MRS Media Resource Function - Controller Part
  • the control section) and the MRFP are the preferred embodiments of the present invention, and it should be noted that those skilled in the art can not deviate from the present invention.
  • the MRFP Media Resource Function - Process Part

Description

实现彩铃互通的方法、 多媒体网关控制设备及应用服务器 本申请要求于 2007 年 10 月 12 日提交中国专利局、 申请号为 200710163578.9、 发明名称为"实现彩铃互通的方法、 多媒体网关控制设备及 应用服务器"的中国专利申请的优先权,其全部内容通过引用结合在本申请中。 技术领域
本发明涉及移动通信技术,特别是涉及一种实现彩铃互通的方法、多媒体 网关控制设备及多媒体彩铃应用服务器。
背景技术
彩铃业务是一种多媒体业务,是一种移动电话用户和固定电话用户(包括 有线固定电话和无线固话)定制特别回铃音来替代传统回铃音展示给拨打自己 电话的用户的业务,在不同运营商的网络中,可能会使用不同的商品名称来标 识该业务。
现有的多媒体彩铃业务(MRBT, Multimedia Ring Back Tone ) 的系统及 方法实现了 3G CS域(Circuit Switched domain,电路域)彩铃功能和 3G PS域 (Packet Switched domain,分组域)彩铃功能(包括 IMS域(IP Multimedia Subsystem, 网际协议多媒体子系统)彩铃)。
然而, 发明人在研究过程中却发现现有技术只提供了分组核心网中的主叫 用户终端听来自传统电路域网络的被叫信号音的功能 ,并没有提供电路域网络 的主叫用户终端听来自分组核心网被叫用户的多媒体彩铃的功能,而这一现有 技术中没有提供的功能在实现时存在如下技术问题: 当电路域用户呼叫 IMS 域用户时(视频呼叫) , 主叫终端归属的移动交换中心 (主叫 MSC Server, Mobile Services switching Center- Server )无法跨域查询被叫是否订购了 多媒体彩铃业务,且在收到被叫振铃信号后无法判断是否需要接通主叫,从而 无法实现向 CS域用户播放 IMS视频彩铃。 发明内容
本发明实施例提供一种实现彩铃互通的方法、多媒体网关控制设备及应用 服务器, 以解决在网络互通时, CS域用户呼叫 IMS域用户时播放视频彩铃的问 题。
为此,本发明实施例提供一种实现彩铃互通的方法, 当电路域用户向多媒 体子系统的多媒体彩铃用户发起呼叫时,触发多媒体彩铃业务,该方法包括步 骤: 接收多媒体彩铃应用服务器发送的信令, 所述信令包括视频彩铃信息; 若根据所述信令确定向主叫终端播放视频彩铃,则通知主叫终端归属的移 动交换中心接通主叫终端。
本发明实施例还提供一种多媒体网关控制设备, 包括:
接收单元, 用于接收多媒体彩铃应用服务器发送的信令, 所述信令包括视 频彩铃信息;
判断单元,用于根据所述接收单元接收到的信令判断是否向主叫终端播放 视频彩铃, 并发送判断结果;
通知单元, 用于在接收到判断单元的是的判断结果时,通知主叫终端归属 的移动交换中心接通主叫终端。
本发明实施例还提供一种多媒体彩铃应用服务器,适用于彩铃的模式为网 关模式, 包括:
接收单元 ,用于在电路域用户向多媒体子系统的多媒体彩铃用户发起呼叫 时, 接收多媒体网关控制实体发送的呼叫请求;
判断单元,用于判断所述呼叫请求是否为多媒体网关控制实体发送的呼叫 请求, 进一步判断是否为来自 3G CS域的视频呼叫请求, 并发送判断结果; 添加或者接通的单元, 用于在接收到判断单元的发送是的判断结果时,在 发出携带彩铃早期媒体的信令中添加彩铃业务标识,或者向多媒体网关控制实 体发送指示建立通信链路的信令指示多媒体网关控制实体通知移动交换中心 接通主叫终端, 优选地, 可以在收到被叫振铃信号后发送所述指示信令。
由上述技术方案可知,本发明实施例中, 当电路域用户向多媒体子系统的 多媒体彩铃用户发起呼叫时,触发多媒体彩铃业务, 所述多媒体彩铃服务器向 多媒体网关控制服务器发送信令, 所述信令包括视频彩铃信息, 然后根据所述 信令判断是否向主叫终端播放视频彩铃, 若是, 则通知主叫终端归属的移动交 换中心接通主叫终端。 由此可见,本发明实施例可以实现 CS域彩铃与 IMS彩 铃的互通, CS域用户呼叫 IMS用户时(视频呼叫 )可以向主叫播放 IMS视频 彩铃, 提升了用户体验。
附图说明
图 1为本发明实施例中彩铃互通所涉及 IMS域相关的参考点及网元的示 意图;
图 2为本发明实施例实现彩铃互通的方法的流程图;
图 3为本发明实施例实现彩铃互通的方法的具体信令流程图;
图 4为本发明实施例采用服务器模式实现彩铃互通的方法流程图; 图 5为本发明实施例采用网关模式实现彩铃互通的方法流程图;
图 6为本发明实施例采用网关模式的一种互通信令流程图;
图 7为本发明实施例采用网关模式的另一种互通信令流程图;
图 8为本发明实施例采用服务器模式的互通信令流程图;
图 9为本发明实施例多媒体控制设备的结构示意图;
图 10为本发明实施例多媒体彩铃应用服务器的结构示意图。
具体实施方式
在说明本发明之前, 先介绍彩铃互通所涉及 IMS域相关的参考点及网元, 如图 1所示, 具体包括的参考点 (即接口)为:
ISC: 用于 IMS域彩铃业务服务器和服务呼叫会话控制功能(S-CSCF,
Serving - Call Session Control Function )之间的消息交换。
Mr: 用于多媒体资源功能控制 (MRFC, Multimedia Resource Function Controller )和 S-CSCF之间的消息交互, 播放 IMS域彩铃时使用。
Mi: 用于多媒体网关控制 ( BGCF, Breakout Gateway Control Function ) 和 S-CSCF之间的消息交互, IMS发起到 CS域的会话中使用。
Mw: 为 CSCF之间的接口, 用于 CSCF之间的消息交互, CS域向 IMS 用户的彩铃播放时使用。 Mg: 媒体网关控制功能(MGCF, Media Gateway Control Function )将综 合业务数据网用户部分 ( ISUP, Integrated Service Data Network User Part )信 令转换成 SIP信令后转发给查询呼叫会话控制功能( I-CSCF, Interrogating- Call Session Control Function )。
Mj: 用于同一 IMS网络中的 BGCF和 MGCF之间的消息交互。
Mb: 用于多媒体资源功能控制处理器 ( MRFP , Multimedia Resource Function Processor)和用户平面实体 IP 多媒体网关功能( IM-MGW, Internet Protocol multimedia-Media GateWay )之间媒体:巟交互。
包括的各网元及其功能描述为:
MGCF/ IM-MGW:
所述 MGCF是使 IMS用户和 CS用户之间可以进行通信的网关。 所有来 自 CS用户的呼叫控制信令都指向 MGCF, 它负责 ISUP/承载无关的呼叫控制 ( BICC, Bearer Independent Call Control )与 SIP协议之间的协议转换。
所有 IMS发起的到 CS用户的会话也经由 MGCF, 所述 MGCF控制与其 关联的 IM-MGW中的媒体通道。 参考点 Mn。
所述 IM-MGW提供 CS网络和 IMS之间的用户平面链路,它终结来自 CS 网络的承载信道和媒体流, 执行这些终结之间的转换。
为了支持视频互通, 需要实现支持信令转换和媒体协商的视频互通网关 VIG(Video Interworking Gateway )功能,具体可以在 MGCF等网络设备中内置 VIG功能, 也可以分设专门的视频互通网元来处理视频的互通。
在本发明实施例中,以在 MGCF/IM-MGW内置 VIG功能为例加以详细阐 述。
MGCF/IM-MGW和 BGCF—起组成互通网元, 以支持电路域可视电话和 多媒体彩铃的互通。
需要说明的是, 下述实施例中, 如果用 MGCF表示, 则只涉及到该实体 的功能;如果用 MGCF/IM-MGW表示,则涉及到 MGCF和 IM-MGW的功能, 下述不再说明。 MRS, 是 IMS域的多媒体资源服务器, 做为彩铃服务器为 IMS用户提供 语音、 视频彩铃。
下面结合附图及实施例对本发明作详细的说明。
请参阅图 2,为本发明实施例实现彩铃互通的方法的流程图,该方法包括: 步骤 201 : 接收多媒体彩铃应用服务器发送的所述呼叫的信令, 所述信令 包括视频彩铃信息;
步骤 202: 根据所述信令判断是否向主叫终端播放视频彩铃, 若是, 则通 知主叫终端归属的移动交换中心接通主叫终端;
步骤 203: 控制与主叫终端建立通信链路播放视频彩铃。
在本发明实施例中, 步骤 203为可选步骤。对本发明实施例来说控制的执 行主体可以是多媒体控制功能实体, 比如 MGCF等, 也可以是 VIG, 但本发 明实施例的执行主体以 MGCF为例。
在理解上述概念后, 本发明实施例在电路域用户呼叫 IMS域用户时, 主 叫终端归属的 MSC Server能够获取是否要向主叫播放视频彩铃的信息, 并且 在收到被叫振铃信号能够判断是否需要接通主叫,从而实现向电路域用户播放 IMS视频彩铃。本发明实施例提供的技术方案为: MGCF解析彩铃应用服务器 ( AS, Application Server )发出的信令(如携带早期媒体的 183(Session Progress, ^舌进展)信令), 根据信令中携带的信息判断是否向主叫播放视频彩铃, 如果 是, 则向主叫 MSC Server发送通知 (可以通过呼叫进展 CPG(Call ProGress)信 令或者振铃信令发送, 也可以通过其它信令发送, 本发明实施例不作限制), 指示主叫 MSC Server接通主叫, 并与主叫终端建立通信链路,播放视频彩铃。 其实现过程如图 3所示, 具体为:
步骤 301、 MRBTAS向 MGCF发送信令, 该信令中携带视频彩铃信息, 也就是说,如果要向主叫播放视频彩铃,则在发送的信令中携带视频彩铃信息, 具体信令可以是 183信令、 Update信令等, 所述视频彩铃信息指的是可以据 此判断是否要向主叫播放视频彩铃的信息,如彩铃早期媒体中的视频会话描述 协议 ( SDP Session Description Protocol ), 彩铃早期媒体业务标识、 信令相关 头域(如早期媒体头域 P-Early-Media或者彩铃业务标识等);
步骤 302、 MGCF收到信令后判断是否要向主叫播放视频彩铃, 本流程假 定判断结果为"是", 则执行步骤 303;
步骤 303、 MGCF在收到被叫的振铃信号后向主叫 MSC Server发送通知, 通知主叫 MSC Server接通主叫终端, 且不计费;
步骤 304、 主叫 MSC Server向主叫终端发送连接命令接通主叫; 步骤 305、 建立主叫终端与 MGCF/IM-MGW之间的通信链路, (具体为
MGCF控制 IM-MGW与主叫终端建立通信链路);
步骤 306、 媒体通道建立, MRBT AS指示 MRS向主叫播放彩铃。
为了便于本领域技术人员的理解, 下面针对目前彩铃的两种模式: 早期媒 体服务器模式和早期媒体网关模式 , 分别进行说明:
第一实施例: 早期媒体服务器模式下的彩铃互通:
请参阅图 4, 为本发明实施例采用服务器模式实现彩铃互通的方法流程 图, 所述方法具体包括:
步骤 401、 主叫 MSC Server (图中以主叫 MSC来表示)向 MGCF发送呼 叫请求,
步骤 402、 MGCF将接收到的呼叫请求转发给 MRBT AS;
步骤 403、 MRBT AS统一处理 MGCF发送的呼叫和接收到的 IMS呼叫 , 即不需要识别是 MGCF发送的还是 IMS用户终端发送的邀请 ( Invite ), 如果 当前呼叫为视频呼叫且被叫为彩铃用户, MRBT AS在回复的信令中携带包括 视频 SDP的彩铃早期媒体。
所述方法进一步还可以包括: MRBT AS在信令中标识出该信令中携带的 早期媒体是否为彩铃早期媒体。 可以通过新增 SIP头域、 扩展某一头域的取值 或扩展 SDP来携带彩铃业务标识, 表明该信令中携带的为彩铃早期媒体。 也可 以在早期媒体 SDP中添加彩铃业务标识(或设置相应的媒体属性标记), 如可 以扩展早期媒体 SDP中会话级的属性行 a行描述媒体类型为 "彩铃早期媒体" , 具体的示例如下: a=Service-Type: MRBT
其中, Service-Type, 表示通用式或业务类型。
步骤 404、 MGCF接收到 MRBT AS反馈的信令后, 判断该信令中是否携 带包括视频 SDP的早期媒体, 若是, 则确定要向主叫终端播放视频彩铃; 所述方法进一步还可以包括: MGCF根据信令中携带的彩铃业务标识判断 出信令中携带的早期媒体为彩铃早期媒体。 即 MGCF根据彩铃业务标识和视 频 SDP确定要向主叫播放视频彩铃。
步骤 405、 MGCF判断出需要向主叫用户播放视频彩铃, 则在收到被叫振 铃信号后向主叫发送通知(比如通过 CPG等), 指示主叫 MSC Server接通主 叫终端。
第二实施例: 早期媒体网关模式的彩铃:
还请参阅图 5, 为本发明实施例采用网关模式实现彩铃互通的方法流程 图, 所述方法具体包括:
步骤 501、 主叫 MSC Server (图中以主叫 MSC来表示 )向 MGCF发送呼 叫请求, 所述呼叫请求为 3G CS域的视频呼叫请求;
步骤 502、 MGCF将接收到的呼叫请求转发给 MRBT AS;
MGCF可以在转发的呼叫请求中添加 3G CS视频呼叫标识, 表明这是来 自 3G CS域的视频呼叫请求。
步骤 503、 MRBT AS判断接收到的视频呼叫请求是否是 MGCF发送的视 频呼叫请求, 若是, 则在携带彩铃媒体的 183信令中添加彩铃业务标识, 指明 信令中携带的是彩铃媒体, 并将其发送给 MGCF。
优选的, 所述方法还可以包括步骤 504: 在 MRBT AS发送给 MGCF的信 令中携带视频彩铃信息, 其具体为, 通过在该信令中新增 SIP头域、 扩展某一 头域取值或扩展 SDP 来携带彩铃业务标识, 但并不限于此。 也可以在接触 ( Contact )头域中设置一业务标识, 如在 Contact的配置( schemes )值中增或 添" MRBT",或在彩铃媒体 SDP中添加彩铃业务标识, 比如可以扩展 a行描述 媒体类型为"彩铃媒体", 示例如下: a=Service-Type: MRBT
可选地, MRBT AS可以另外发送指示信令(通过 183信令、 update信令 等 sip信令, 但并不限于此 )指示 MGCF通知 MSC Server接通主叫。
一种优选的实施例中, 步骤 503也可以省略, 也就是说, 在步骤 502中, MGCF不需要在转发的呼叫请求中添加 3G CS视频呼叫标识, MRBT AS统一 处理 MGCF发送的呼叫和接收到的 IMS呼叫,即不需要识别是 MGCF发送的 还是 IMS用户终端发送的邀请(Invite ),如果当前呼叫为视频呼叫且被叫为彩 铃用户, 则 MRBT AS在回复的信令中携带包括视频 SDP的彩铃媒体, 和用 于指示早期媒体方向属性的 P-Early-Media头域。
步骤 505、 MGCF接收到 MRBT AS发送的信令后, 判断该信令中是否携 带包括视频 SDP的彩铃媒体或判断该信令是否为指示信令, 若是, 则确定要 向主叫终端播放视频彩铃;
步骤 506、如果 MGCF判断出要向主叫终端播放视频彩铃,则在收到被叫 振铃信号后向主叫发送通知(如通过 CPG信令), 指示主叫 MSC Server接通 主叫终端。
还请参阅图 6, 为本发明实施例采用网关模式的一种互通信令流程图, 具 体包括: 电路域主叫用户呼叫 IMS用户, 播放 IMS视频彩铃。
需要说明的是:
a)本图中为了突出彩铃呼叫的特殊流程, 本图简化了 MSC Server与终端 用户之间的消息交互。
b)本图中为了突出彩铃信令流程,略去了 MGCF与 IM-MGW之间媒体控 制过程。 MGCF和 IM-MGW之间采用标准的 H.248网关控制协议。
c ) 另外, 本图中还省略了主叫 MSC Server与 GMSC、 GMSC与 MGCF 之间的信令交互以及通过核心网 (S-CSCF、 P-CSCF ) 的信令转发、 业务触发 过程等。 CS用户呼叫 IMS用户, 呼叫信令经 MGCF转换后 , 路由到 S-CSCF 触发 IMS域彩铃业务 AS。
其具体的信令流程包括: 步骤 601 ~步骤 603: 主叫终端发起建立( Setup )呼叫建立消息, 经 MSC Server和 GMSC Server (图中省略了)路由到 MGCF。 MGCF收到 IAM( BICC ) 后 , 转换为邀请 Invite ( sdp-mgw )触发到 IMS域彩铃业务 MRBT AS, Invite 信令中携带有 CS域视频呼叫标识;
步骤 604 ~步骤 610: MRBTAS根据信令中携带的标识解析出该呼叫请求 是来自于 MGCF的视频呼叫请求, 向 MRS、 被叫终端发起会话请求, 进行媒 体协商, 其具体的协商过程如图所示;
步骤 611 ~步骤 613: MRBTAS向 MGCF发送 183可靠响应, 携带 MRS 协商后的 SDP ( sdp-mrbt )。 MGCF控制 IM-MGW与 MRS建立媒体连接; 步骤 614 ~步骤 617: MRBT AS向 MGCF发送 180可靠响应, 经 MGCF 转换为振铃信令 ACM(Address Complete Message, 地址全消息) ( BICC )后经 主叫端局向主叫终端发送振铃信号(Alerting );
步骤 618 ~步骤 620: MRBT AS向 MGCF发送特殊的更新 ( Update )信 令, 该更新命令中携带"向主叫播放视频彩铃 "的信息, MGCF根据接收到的 Update命令判断出要向主叫播放视频彩铃, 发送 CPG指示主叫 MSC Server 接通主叫终端 , 此时不进行计费。 主叫终端和 MGCF/IM-MGW进行 H.245能 力协商,建立媒体连接,比如 MGCF控制 IM-MGW与主叫终端建立媒体连接; 所述 H.245是多媒体通信控制信令协议, 用来解决呼叫媒介类型问题, 并 且在呼叫建立之前,该协议需要用来建立媒介流, 同时在呼叫建立之后对呼叫 进行管理。
步骤 621 ~步骤 624: MRBTAS收到 MGCF发送的临时可靠响应( prack ) 后指示 MRS放音, MGCF控制 IM-MGW完成两侧媒体流的转换;
MRS向主叫终端播放彩铃。
步骤 625: 被叫终端接听, 并回 200至 MRBT AS。
步骤 626 ~步骤 627: MRBTAS使用步骤 606 ~步骤 609与被叫终端协商 后的 SDP与 MGCF做 Update改向, MGCF控制 IM-MGW与被叫终端建立媒 体连接。 步骤 628: MRBTAS向被叫终端回 Ack。
步骤 629 ~步骤 632: MRBT AS向 MGCF发送 200应答, MGCF转换为 应答信令 ANM ( BICC )后经主叫端局向主叫终端发送 Connect
步骤 633 ~步骤 634: MRBT AS收到 MGCF发送的 Ack后, 指示 MRS 拆除连接。
主叫终端与被叫终端的通话建立。
还请参阅图 7, 为本发明实施例采用网关模式的另一种互通信令流程图, 具体包括: 电路域主叫用户呼叫 IMS用户, 播放 IMS视频彩铃 。
需要说明的是:
a)本图中为了突出彩铃呼叫的特殊流程, 本图简化了 MSC Server与终端 用户之间的消息交互。
b)本图中为了突出彩铃信令流程,略去了 MGCF与 IM-MGW之间媒体控 制过程。 MGCF和 IM-MGW之间采用标准的 H.248网关控制协议。
c ) 另外, 本图中还省略了主叫 MSC Server与 GMSC、 GMSC与 MGCF 之间的信令交互以及通过核心网 (S-CSCF、 P-CSCF ) 的信令转发、 业务触发 过程。 CS用户呼叫 IMS用户, 呼叫信令经 MGCF转换后, 路由到 S-CSCF触 发 IMS域彩铃业务 AS。
具体的信令流程包括:
步骤 701 ~步骤 703: 主叫终端发起 Setup呼叫建立消息, 经 MSC Server 和 GMSC Server (图中省略了)路由到 MGCF。 MGCF收到 IAM ( BICC )后 , 转换为 Invite ( SIP )触发到 IMS域彩铃业务 MRBTAS;
步骤 704 ~步骤 710: MRBT AS向 MRS、 被叫终端发起会话请求, 进行 媒体协商, 其具体的协商过程如图所示;
步骤 711 ~步骤 713: MRBTAS向 MGCF发送 183可靠响应, 携带 MRS 协商后的 SDP ,且信令中包括彩铃业务标识,表明该 SDP为彩铃早期媒体 SDP。 MGCF控制 IM-MGW与 MRS建立媒体连接, 同时 MGCF解析收到的 183信 令, 判断是否要向主叫播放视频彩铃(本流程假定为是, 即判断出 183中携带 的 SDP为彩铃早期媒体 SDP且该 SDP中包括视频媒体信息);
步骤 714 ~步骤 717: MRBT AS向 MGCF发送 180可靠响应, 经 MGCF 转换为振铃信令 ACM ( BICC )后经主叫端局向主叫终端发送 Alerting;
步骤 718 ~步骤 719: MGCF根据之前的判断结果发送 CPG指示主叫 MSC Server接通主叫终端, 此时不进行计费。 主叫终端和 MGCF/IM-MGW进行
H.245能力协商, 建立媒体连接, 比如: MGCF控制 IM-MGW与主叫终端建 立媒体连接;
一种优选的实施例中, 也可以省略步骤 718〜719, 通过步骤 716 的 ACM(BICC)振铃信令指示 MSC Server 接通主叫终端, 主叫终端和 MGCF/IM-MGW进行 H.245 能力协商, 建立媒体连接, 比如: MGCF控制 IM-MGW与主叫终端建立媒体连接;
步骤 720 ~步骤 723: MRBT AS收到 MGCF发送的临时可靠响应 prack 后指示 MRS放音, MGCF控制 IM-MGW完成两侧媒体流的转换;
MRS向主叫终端播放彩铃。
步骤 724 : 被叫接听 , 被叫终端回 200至 MRBT AS。
步骤 725 ~步骤 726: MRBT AS使用步骤 706 ~步骤 709步与被叫终端协 商后的 SDP与 MGCF做 Update改向, MGCF控制 IM-MGW与被叫终端建立 媒体连接。
步骤 727: MRBT AS向被叫终端回 Ack。
步骤 728 ~步骤 731 : MRBT AS向 MGCF发送 200应答, MGCF转换为 应答信令 ANM ( BICC )后经主叫端局向主叫终端发送 Connect
步骤 732 ~步骤 733: MRBT AS收到 MGCF发送的 Ack后, 指示 MRS 拆除连接。
再请参阅图 8, 为本发明实施例采用服务器模式的互通信令流程图, 具体 包括: 电路域主叫呼叫 IMS用户, 播放 IMS视频彩铃 。
需要说明的是:
a)本图为了突出彩铃呼叫的特殊流程, 本图简化了 MSC Server与终端用 户之间的消息交互。
b)本图中为了突出彩铃信令流程,略去了 MGCF与 IM-MGW之间媒体控 制过程。 MGCF和 IM-MGW之间采用标准的 H.248网关控制协议。
c ) 另外, 本图还省略了主叫 MSC Server与 GMSC、 GMSC与 MGCF之 间的信令交互以及通过核心网 (S-CSCF、 P-CSCF )的信令转发、 业务触发过 程。 CS用户呼叫 IMS用户, 呼叫信令经 MGCF转换后, 路由到 S-CSCF触发
IMS域彩铃业务 AS。
具体的信令流程描述:
步骤 801 ~步骤 803: 主叫终端发起 Setup呼叫建立消息, 经 MSC Server 和 GMSC Server (图中省略了)路由到 MGCF。 MGCF收到 IAM ( BICC )后, 转换为 Invite ( SIP )触发到 IMS域彩铃业务 MRBT AS;
步骤 804 ~步骤 805: MRBT AS向 MRS发起呼叫请求, MRS向 MRBT AS 返回 200响应, 信令中携带用于播放彩铃的早期媒体请求(sdp-mrbt );
步骤 806 ~步骤 809: MRBTAS被叫发起会话请求, 进行正常媒体协商; 步骤 810: MRBTAS向 MGCF发送 183可靠响应, 携带协商后的正常媒 体 SDP ( sdp-mgw' )和 MRS的用于彩铃早期媒体协商的 SDP ( sdp-mrbt ), 信 令中可能包括彩铃业务标识, 表明携带的 sdp-mrbt为彩铃早期媒体, MGCF 收到后根据 sdp-mrbt判断出要想主叫播放视频彩铃;
步骤 811 ~步骤 813: MGCF/IM-MGW根据自身能力进行彩铃早期媒体 协商, 并通过 prack信令将协商后的彩铃早期媒体 ( sdp-mrbt' )发送给 MRBT AS, MRBTAS利用 ACK将 sdp-mrbt,发送给 MRS并向 MGCF返回 200信令。 MGCF控制 IM-MGW与 MRS建立媒体连接
步骤 814 ~步骤 817: MRBT AS向 MGCF发送 180可靠响应, 经 MGCF 转换为振铃信令 ACM ( BICC )后经主叫端局向主叫终端发送 Alerting;
步骤 818 ~步骤 819: MGCF根据之前的判断结果发送 CPG指示主叫 MSC
Server接通主叫终端, 此时不进行计费。 主叫终端和 MGCF/IM-MGW进行 H.245能力协商, 建立媒体连接, 比如: MGCF控制 IM-MGW与主叫终端建 立媒体连接;
一种优选的实施例 ,也可以省略步骤 818〜819,通过步骤 816的 ACM(BICC) 振铃信令指示 MSC Server接通主叫终端, 主叫终端和 MGCF/IM-MGW进行 H.245能力协商, 建立媒体连接, 比如: MGCF控制 IM-MGW与主叫终端建 立媒体连接;
步骤 820 ~步骤 823: MRBT AS收到 MGCF发送的临时可靠响应 prack 后指示 MRS放音, MGCF控制 IM-MGW完成两侧媒体流的转换;
步骤 824 ~步骤 829:被叫接听,被叫终端回 200至 MRBTAS, MRBTAS 向被叫终端回 Ack并向 MGCF发送 200应答, MGCF转换为应答信令 ANM ( BICC )后经主叫端局向主叫终端发送 Connect
步骤 830 ~步骤 831 : MRBT AS收到 MGCF发送的 Ack后, 指示 MRS 拆除连接。
主叫终端与被叫终端的通话建立。
相应的, 本发明实施例还提供一种多媒体控制设备, 其结构示意图如图 9 所示, 所述设备包括: 接收单元 91、 判断单元 92和通知单元 93。 其中, 所述 接收单元 91 , 用于接收多媒体彩铃应用服务器发送呼叫的信令; 所述信令包 括视频彩铃信息, 具体包括: 彩铃早期媒体中的视频会话描述协议; 或者彩铃 早期媒体中的视频会话描述协议和彩铃业务标识; 所述判断单元 92, 用于根 据所述接收单元接收到的信令判断是否向主叫终端播放视频彩铃,并发送判断 结果; 所述通知单元 93 , 用于在接收到判断单元的是的判断结果时, 通知主 叫终端的移动交换中心接通主叫终端。
此外,本发明实施例再提供一种多媒体彩铃应用服务器,适用于彩铃的模 式为网关模式, 其结构示意图如图 10所示, 所述设备包括: 接收单元 101、 判断单元以 102及添加或接通单元 103。 其中, 所述接收单元 101, 用于电路 域用户向多媒体子系统的多媒体彩铃用户发起呼叫时,多媒体网关控制实体发 送的呼叫请求; 所述判断单元 102, 用于判断所述呼叫请求是否为多媒体网关 控制实体发送的呼叫请求, 并发送判断结果; 所述添加或者接通单元 103 , 用 于在接收到判断单元 102的发送是的判断结果时,在发出携带彩铃早期媒体的 信令中添加彩铃业务标识,或者在收到被叫振铃信号后向多媒体网关控制实体 发送信令指示多媒体网关控制实体通知主叫 MSC Server接通主叫终端。
由此可见,本发明实施例的有益效果为: 可以实现 CS域彩铃与 IMS彩铃 的互通, CS域用户呼叫 IMS用户时(视频呼叫 )可以向主叫播放 IMS视频彩 铃, 提升了用户体验。
在本发明实施例中, 彩铃应用服务器 MRBT AS和媒体资源服务器 MRS 部署为两个不同的网络实体, 具体实现时也可以为同一网络实体; 另外, MRS ( Media Resource Function - Controller Part, 多媒体资源功能控制部分)和 MRFP ( Media Resource Function - Process Part, 多媒体资源功能处理部分), 以上该仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技 术人员来说, 在不脱离本发明原理的前提下, 还可以作出若干改进和润饰, 这 些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1、 一种彩铃互通的方法, 其特征在于, 当电路域用户向多媒体子系统的 多媒体彩铃用户发起呼叫时, 触发多媒体彩铃业务, 包括:
接收多媒体彩铃应用服务器发送的信令;
若根据所述信令确定向主叫终端播放视频彩铃,则通知移动交换中心接通 主叫终端。
2、 根据权利要求 1所述的方法, 其特征在于, 所述方法还包括: 控制与主叫终端建立通信链路播放视频彩铃。
3、 根据权利要求 1所述的方法, 其特征在于, 所述通知移动交换中心接 通主叫终端的方式为:通过向所述移动交换中心发送呼叫进展信令或者振铃信 令通知所述移动交换中心接通主叫终端。
4、 根据权利要求 1所述的方法, 其特征在于, 所述根据信令确定向主叫 终端播放视频彩铃的具体过程为:根据所述信令中包括的视频彩铃信息来确定 向主叫终端播放视频彩铃。
5、 根据权利要求 4所述的方法, 其特征在于, 若彩铃的模式为应用服务 器模式, 所述视频彩铃信息包括: 彩铃早期媒体中的视频^舌描述协议。
6、根据权利要求 4所述的方法, 其特征在于, 若彩铃的模式为网关模式, 所述视频彩铃信息包括:彩铃早期媒体中的视频会话描述协议和彩铃业务标识 或者彩铃早期媒体中的视频会话描述协议和早期媒体头域 P-Ear ly-Media。
7、 根据权利要求 6所述的方法, 其特征在于, 所述彩铃业务标识包括: 早期媒体业务标识和 /或信令头域中的业务标识。
8、根据权利要求 1所述的方法, 其特征在于, 若彩铃的模式为网关模式, 则所述方法还包括:
若多媒体彩铃应用服务器确定接收到的呼叫请求为来自电路域的视频呼 叫请求; 则在发出携带彩铃早期媒体的信令中添加彩铃业务标识。
9、 根据权利要求 1所述的方法, 其特征在于, 所述根据信令确定向主叫 终端播放视频彩铃的具体过程为: 若所述信令为指示建立通信链路的信令, 则 确定向主叫终端播放视频彩铃。
10、根据权利要求 9所述的方法,其特征在于,若彩铃的模式为网关模式, 则所述方法还包括:
若多媒体彩铃应用服务器确定接收到的呼叫请求为来自电路域的视频呼 叫请求; 则向多媒体网关控制实体发送信令,指示多媒体网关控制实体通知所 述移动交换中心接通主叫终端。
11、 根据权利要求 8或 10所述的方法, 其特征在于, 确定接收到的呼叫 请求为来自电路域的视频呼叫请求的条件为:通过判断呼叫请求中是否携带电 路域视频呼叫标识来确定。
12、 一种多媒体网关控制设备, 其特征在于, 包括:
接收单元 , 用于接收多媒体彩铃应用服务器发送的信令;
判断单元,用于根据所述接收单元接收到的信令判断是否向主叫终端播放 视频彩铃;
通知单元, 用于在接收到判断单元发送是的判断结果时,通知主叫终端归 属的移动交换中心接通主叫终端。
13、根据权利要求 12所述的多媒体网关控制设备, 其特征在于, 还包括: 控制单元, 用于控制与主叫终端建立通信链路播放视频彩铃。
14、根据权利要求 12或 13所述的多媒体网关控制设备, 其特征在于, 所 述判断单元至少包括下述一种,
视频彩铃信息判断子单元,用于判断所述接收到的信令中是否包括视频彩 铃信息, 并向通知单元发送是的判断结果;
指示建立通信链路子单元,用于判断所述信令是否为指示建立通信链路的 信令, 并向通知单元发送是的判断结果。
15、一种多媒体彩铃应用服务器, 适用于彩铃的模式为网关模式, 其特征 在于, 包括:
接收单元 ,用于在电路域用户向多媒体子系统的多媒体彩铃用户发起呼叫 时, 接收多媒体网关控制实体发送的呼叫请求; 判断单元, 用于判断所述呼叫请求是否为来自电路域的视频呼叫请求, 并 发送判断结果;
添加或者接通单元, 用于在接收到判断单元的发送是的判断结果时,在发 出携带彩铃早期媒体的信令中添加彩铃业务标识,或者向多媒体网关控制实体 发送信令指示多媒体网关控制实体通知所述移动交换中心接通主叫终端。
PCT/CN2008/072617 2007-10-12 2008-10-08 Procédé, dispositif de commande de passerelle réseau multimédia et serveur d'application pour mettre en œuvre l'intercommunication des tonalités de retour d'appel personnalisées WO2009049531A1 (fr)

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