WO2023098873A1 - 媒体功能的交互方法及设备 - Google Patents

媒体功能的交互方法及设备 Download PDF

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Publication number
WO2023098873A1
WO2023098873A1 PCT/CN2022/136195 CN2022136195W WO2023098873A1 WO 2023098873 A1 WO2023098873 A1 WO 2023098873A1 CN 2022136195 W CN2022136195 W CN 2022136195W WO 2023098873 A1 WO2023098873 A1 WO 2023098873A1
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Prior art keywords
media
network element
media function
information
target
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PCT/CN2022/136195
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English (en)
French (fr)
Inventor
白雪茜
姜怡
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中国移动通信有限公司研究院
中国移动通信集团有限公司
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Publication of WO2023098873A1 publication Critical patent/WO2023098873A1/zh

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    • 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
    • H04L65/1066Session management
    • 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
    • H04L65/1066Session management
    • H04L65/1101Session protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/25Maintenance of established connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20Transfer of user or subscriber data

Definitions

  • the present application relates to the technical field of mobile communication, and specifically relates to a media function interaction method and device.
  • IMS IP Multimedia Subsystem
  • TrGW Transition Gateway
  • IP Multimedia Gateway IP Multimedia Media Gateway, IM-MGW: used to realize the intercommunication of media functions between IMS network and other non-IP networks.
  • non-IP networks include traditional 3G networks, public switched telephone networks (Public Switched Telephone Network, PSTN), etc.;
  • IMS-AGW IMS Access Gateway
  • NAT Network Address Translation
  • MRFP Media Resource Function Controller
  • the existing IMS network interface adopts the H.248 protocol, which has poor scalability. It is difficult to decouple the media control network elements and media bearer network elements between different manufacturers, and it is very difficult to deploy between different manufacturers.
  • At least one embodiment of the present application provides a method and device for interacting with media functions, which are used to solve the problem in the prior art that it is difficult to associate service-side and network-side user identifiers.
  • an embodiment of the present application provides a method for interacting with a media function of an IMS network, including:
  • the media control server sends a media function discovery request message for querying the target media function to the second network element;
  • the media control server receives a media function discovery request response message sent by the second network element, where the media function discovery request response message is used to feed back information about at least one candidate media function instance that matches the target media function;
  • the media control server selects a target media function instance from the at least one candidate media function instance to provide the target media function.
  • the media function discovery request message carries at least one of the following information:
  • Target media capability information where the target media capability information includes at least one of the following: codec capability, playback capability, conference capability, data channel media capability, and topology hiding capability.
  • the media function discovery request response message carries at least one of the following information:
  • the address of the candidate media function instance includes a fully qualified domain name (Fully Qualified Domain Name, FQDN) address and/or an Internet Protocol (Internet Protocol, IP) address;
  • FQDN Fully Qualified Domain Name
  • IP Internet Protocol
  • the media service capability information that the candidate media function instance can provide
  • the location information of the candidate media function instance is the location information of the candidate media function instance.
  • it also includes:
  • the media control server selects a target media function instance from the at least one candidate media function instance, including:
  • the media control server selects a target media function instance from the at least one candidate media function instance according to the information carried in the media function discovery request response message and a preconfigured media function selection mechanism.
  • the selecting a target media function instance from the at least one candidate media function instance includes at least one of the following:
  • the at least one candidate media function instance includes only one media function instance, selecting the candidate media function instance as a target media function instance;
  • a target media function instance is selected according to a preconfigured media function selection mechanism.
  • selecting a target media function instance according to a pre-configured media function selection mechanism includes:
  • a target media function instance is selected from the at least two media function instances based on a random algorithm
  • the media function selection mechanism is a priority mechanism, select a target media function instance from the at least two media function instances according to the order of matching priority;
  • a target media function instance is selected from the at least two media function instances according to the selection mechanism of the media control server.
  • the selection mechanism of the media control server includes at least one of the following:
  • the selection is made based on the load information of the media function instance.
  • the media control server sends the media function discovery request message to the second network element when receiving the media session-related request sent by the requesting party.
  • the request related to the media session includes at least one of the following:
  • Session initialization Protocol Session initialization Protocol, SIP
  • it also includes:
  • the media control server sends a subscription request message for subscribing to the state information of the first media function instance to the second network element, where the subscription request message carries a receiving address of the state information of the first media function instance;
  • the media control server receives a subscription request response message sent by the second network element of the network, where the subscription request response message is used to indicate whether the status information of the first media function instance is successfully subscribed.
  • the subscription request message also carries indication information of desired subscribed media capabilities.
  • it also includes:
  • the media control server receives the media status update message sent by the second network element, where the media status update message carries status update information of the first media function instance.
  • it also includes:
  • the media control server sends a media session establishment request to the target third network element, the media session establishment request is used for negotiation between the media control server and the third network element to establish a target media resource, and the target third network element is the The third network element where the target media function instance is located;
  • the media control server receives a media session establishment request response message returned by the target third network element, where the media session establishment request response message carries information about the target media resource;
  • the media control server sends the relevant information of the target media resource to the requester that triggered the media function discovery request message.
  • it also includes:
  • the media control server sends a media session update request to the target third network element, where the media session update request carries update indication information of the target media resource;
  • the media control server receives the media session update request response message returned by the target third network element.
  • it also includes:
  • the media control server sends a media session removal request to the target third network element, and the media session removal request includes a session removal indication and media resource information requested to be removed;
  • the media control server receives the media session removal request response message returned by the target third network element.
  • the media control server communicates with the second network element and the media function instance by using a Service Based Interface (Service Based Interface, SBI).
  • SBI Service Based Interface
  • the embodiment of the present application provides a method for interacting with media functions of an IMS network, including:
  • the second network element receives the media function discovery request message sent by the media control server for querying the target media function
  • the second network element determines at least one candidate media function instance that matches the target media function, and sends a media function discovery request response message to the media control server, where the media function discovery request response message is used to feed back the Information about at least one candidate media function instance.
  • the media function discovery request message carries at least one of the following information:
  • Target media capability information where the target media capability information includes at least one of the following: codec capability, playback capability, conference capability, data channel media capability, and topology hiding capability.
  • the media function discovery request response message carries at least one of the following information:
  • the address of the candidate media function instance includes a FQDN address and/or an IP address;
  • the media service capability information that the candidate media function instance can provide
  • the location information of the candidate media function instance is the location information of the candidate media function instance.
  • it also includes:
  • the second network element receives the media capability registration request information sent by the third network element, where the media function registration request information is used to register the media capability of the media function instance of the third network element;
  • the second network element saves the correspondence between the media function instance and the media capability according to the media function registration request information, and sends media function registration request response information to the third network element.
  • the media capability registration request information carries at least one of the following information: the type of media function, the identifier of the media function instance, the address of the media function instance, and the media service capability information that the media function instance can provide .
  • it also includes:
  • the second network element receives a subscription request message sent by the media control server for subscribing to the state information of the first media function instance, where the subscription request message carries a receiving address of the state information of the first media function instance ;
  • the second network element sends a subscription request response message to the media control server, where the subscription request response message is used to indicate whether the status information of the first media function instance has been successfully subscribed.
  • it also includes:
  • the second network element When the status of the first media function instance is updated, the second network element sends a media status subscription message to the media control server, the media status subscription message carrying the status of the first media function instance Status update information.
  • the second network element communicates with the media control server and the media function instance by using a service-based interface SBI.
  • the embodiment of the present application provides a method for interacting with media functions of an IMS network, including:
  • the third network element receives a media session establishment request sent by the media control server, and the media session establishment request is used for negotiation between the media control server and the third network element to establish a target media resource;
  • the media function instance sends a media session establishment request response message to the media control server in response to the media session establishment request, and the media session establishment request response message carries information about the target media resource.
  • it also includes:
  • the third network element receives a media session update request sent by the media control server, where the media session update request carries update indication information of the target media resource;
  • the media control service updates the target media resource according to the update indication information, and sends a media session update request response message to the media control server after the update is completed.
  • it also includes:
  • the third network element receives a media session removal request sent by the media control server, where the media session removal request includes a session removal indication and media resource information requested to be removed;
  • the media control service removes the corresponding media session, releases the corresponding media resources, and sends a media session removal request response message to the media control server.
  • it also includes:
  • the third network element sends media capability registration request information to the second network element, where the media capability registration request information is used to register the media capability of the media function instance of the third network element;
  • the third network element receives the media function registration request response information sent by the second network element.
  • multiple media function instances are aggregated in the third network element, and the multiple media function instances include at least one of the following:
  • TrGW function example
  • the third network element communicates with the media control server and the second network element by using a service-based interface SBI.
  • the embodiment of the present application provides a media control server, including a processor and a transceiver, wherein:
  • the transceiver is configured to send a media function discovery request message for querying a target media function to a second network element; and receive a media function discovery request response message sent by the second network element, the media function discovery request The response message is used to feed back information about at least one candidate media function instance matching the target media function;
  • the processor is configured to select a target media function instance from the at least one candidate media function instance to provide the target media function.
  • the embodiment of the present application provides a media control server, including: a processor, a memory, and a program stored on the memory and operable on the processor, and the program is executed by the processor When implementing the steps of the method described in any one of the first aspect.
  • the embodiment of the present application provides a second network element, including a processor and a transceiver, where:
  • the transceiver is configured to receive a media function discovery request message sent by a media control server for querying target media functions;
  • the processor is configured to determine at least one candidate media function instance that matches the target media function, and send a media function discovery request response message to the media control server, where the media function discovery request response message is used to feed back the Information about at least one candidate media function instance.
  • the embodiment of the present application provides a second network element, including: a processor, a memory, and a program stored in the memory and operable on the processor, and the program is executed by the processor When executed, the steps of the method according to any one of the second aspect are realized.
  • the embodiment of the present application provides a third network element, including a processor and a transceiver, where:
  • the transceiver is configured to receive a media session establishment request sent by a media control server, and the media session establishment request is used for negotiation between the media control server and a third network element to establish a target media resource;
  • the processor is configured to send a media session establishment request response message to the media control server in response to the media session establishment request, where the media session establishment request response message carries information about the target media resource.
  • the embodiment of the present application provides a third network element, including: a processor, a memory, and a program stored in the memory and operable on the processor, and the program is executed by the processor When executed, the steps of the method described in any one of the third aspect are realized.
  • the embodiment of the present application provides a computer-readable storage medium, where a program is stored on the computer-readable storage medium, and when the program is executed by a processor, the steps of the above method are implemented.
  • the media function interaction method and device provided by the embodiment of the present application can solve the problem in the prior art that it is difficult to associate the service side with the network side user ID.
  • the embodiment of the present application adopts the media function aggregation method and the SBI-based interaction method, which can greatly simplify the information interaction process between media functions, improve the efficiency of information interaction, and facilitate the intercommunication of network elements of different manufacturers.
  • Figure 1 of the present application is a simplified structural diagram of an SBI-based aggregated media function and related interfaces provided by the embodiment of the present application;
  • FIG. 2 is another structural diagram of an SBI-based aggregated media function and related interfaces provided by an embodiment of the present application
  • FIG. 3 is a flowchart of a media function interaction method provided by an embodiment of the present application.
  • FIG. 4 is another flow chart of a media function interaction method provided by an embodiment of the present application.
  • FIG. 5 is a flow chart of establishing a media session provided by an embodiment of the present application.
  • FIG. 6 is a flow chart of media session update provided by the embodiment of the present application.
  • FIG. 7 is a flow chart of removing a media session provided by an embodiment of the present application.
  • FIG. 8 is a flow chart of media function subscription provided by the embodiment of the present application.
  • FIG. 9 is another flow chart of a media function interaction method provided by an embodiment of the present application.
  • FIG. 10 is a flow chart of media function registration provided by the embodiment of the present application.
  • FIG. 11 is another flow chart of a media function interaction method provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a first network element according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a first network element according to another embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a second network element according to an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a second network element according to another embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a third network element according to an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a third network element according to another embodiment of the present application.
  • FIG. 18 is a schematic structural diagram of a first network element according to another embodiment of the present application.
  • FIG. 19 is a schematic structural diagram of a second network element according to another embodiment of the present application.
  • FIG. 20 is a schematic structural diagram of a third network element according to another embodiment of the present application.
  • the technology described herein is not limited to the NR system and the evolution (LTE-Advanced, LTE-A) system of the Long Time Evolution (Long Time Evolution, LTE)/LTE, and can also be used in various wireless communication systems, such as Code Division Multiple Access (Code Division Multiple Access, CDMA), Time Division Multiple Access (Time Division Multiple Access, TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems.
  • CDMA Code Division Multiple Access
  • Time Division Multiple Access Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • the CDMA system can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA) and the like.
  • UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants.
  • a TDMA system implements a radio technology such as Global System for Mobile Communication (GSM).
  • GSM Global System for Mobile Communication
  • OFDMA system can realize such as Ultra Mobile Broadband (UltraMobile Broadband, UMB), Evolution-UTRA (Evolution-UTRA, E-UTRA), IEEE 802.21 (Wi-Fi), IEEE802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. radio technology.
  • UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and LTE-Advanced (like LTE-A) are new UMTS releases that use E-UTRA.
  • UMTS Universal Mobile Telecommunications System
  • UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2" (3GPP2).
  • the techniques described herein may be used for the systems and radio technologies mentioned above as well as other systems and radio technologies.
  • the following description describes NR systems for example purposes, and NR terminology is used in much of the following description, although the techniques are applicable to applications other than NR system applications as well.
  • the present application provides a media function interaction method of an IMS network, which is used to realize the unified call and interaction mechanism of the media network elements in the IMS network, and solve the problem of using the H.248 protocol for media interaction call in the prior art brought about disadvantages.
  • SBI Service Based Interface
  • the embodiment of the present application also defines an SBI-based media function module, which may be called a centralized media function (Centralized Media Function, CMF) or a unified media function (Unified Media Function, UMF): the media function
  • the module can contain all or part of IMS network media functions, including but not limited to TrGW, IM-MGW, IMS-AGW, MRFP and data channel media functions, etc. These media functions can be discovered and selected by the corresponding media control server through the SBI.
  • the embodiment of the present application also defines an SBI-based media function invocation network architecture.
  • FIG. 1 a simplified structural diagram of an SBI-based aggregated media function and related interfaces provided by the embodiment of the present application.
  • the aggregated media function in FIG. 1 may also be referred to as an aggregated media function module, a unified media function, or a unified media function module. in:
  • the first network element is a server responsible for controlling media resources in the IMS network.
  • the first network element may be one of the following:
  • Media Control Server Media Control Server (Media Control Server, MCS);
  • DCCF Data Channel Control Function
  • Data Channel Server Data Channel Server, DCS
  • DC Service Controller Data Channel Server-Controller, DCS-C
  • DCSF Data Channel Signaling Function
  • CCF Centralized Control Function
  • Application Server Application Server, AS
  • MGCF Media Gateway Control Function
  • IBCF Inter-connect Boarder Control Function
  • NRS Network Repository Server
  • MRF Media Repository Function
  • Media Resource Control Function Media Resource Control Function (Media Resource Control Function, MRCF);
  • the second network element is responsible for the management and discovery of media functions.
  • the second network element may be one of the following:
  • Network Repository Function or Network Repository Function (NRF);
  • MCS Media Repository Server
  • NRS Network Repository Server
  • Media Storage Function Media Repository Function
  • the third network element may include all or part of the IMS network media functions, including but not limited to TrGW, IM-MGW, IMS-AGW, MRFP, data channel media functions, and so on. These media functions can be discovered and selected by the corresponding first network element (such as the media control server) through the SBI.
  • TrGW TrGW
  • IM-MGW IMS-AGW
  • MRFP data channel media functions
  • the third network element may be one of the following:
  • Media Function Server Media Function Server (Media Function Server, MFS);
  • CMF Centralized Media Function
  • DCMF Data Channel Media Functionality
  • Data Channel Media Data Channel Media, DCM
  • DCS-M Data Channel Server-Media
  • MRF Media Resource Function
  • MRFP Media Resource Function Processor
  • IMS IMS media functions or other 5th Generation Mobile Communication Technology Core (5GC) media functions.
  • 5GC 5th Generation Mobile Communication Technology Core
  • IMS media functions or other 5GC media functions refer to IMS media functions or 5GC media functions different from IMS-AGW, MRFP, IM-MGw, TrGW, and User Plane Function (UPF).
  • IMS-AGW IMS-AGW
  • MRFP Magnetic MRFP
  • IM-MGw IMS-MGw
  • TrGW User Plane Function
  • UPF User Plane Function
  • FIG. 2 provides a more detailed structural diagram of the SBI-based aggregated media function modules and interfaces. in:
  • UMF Converged Media Function Module or Unified Media Function Module.
  • This functional module can uniformly include all or part of the IMS network media functions, including but not limited to TrGW, IM-MGW, IMS-AGW, MRFP, data channel media functions, etc. These media functions can be invoked by the corresponding media control server through the SBI.
  • the media control server in Fig. 2 includes AS, MGCF, IBCF and data channel server and so on.
  • the media storage server is mainly responsible for the storage, calling, registration, discovery and subscription of media functions and capabilities.
  • each media control server and the aggregated media function module (unified media function module)
  • the interface between each media control server and the media storage server is called IF2.
  • FIG. 2 also includes the following network elements:
  • AS Application Server: Indicates the application server in the IMS network, responsible for functions such as Service Centralization and Continuity Application Server (Server Centralization and Continuity Application Server, SCC-AS) and Multimedia Telephony (MultiMedia Telephony, MMTEL).
  • Service Centralization and Continuity Application Server Server Centralization and Continuity Application Server, SCC-AS
  • Multimedia Telephony MultiMedia Telephony, MMTEL.
  • the MGCF is responsible for controlling the control module of the IM-MGw, and is responsible for the interaction between the IMS and the CS network.
  • IBCF responsible for controlling the TrGW, and completing the function of border interworking between IMS networks of different operators or between IMS networks and other networks (such as CS networks).
  • P-CSCF Proxy-Call Session Control Function (Proxy-Call Session Control Function), responsible for controlling IMS-AGW, media resource control and codec negotiation.
  • the data channel server or Data Channel Control Function is responsible for controlling the data channel establishment and media resource negotiation server.
  • a media control server a media storage server, and a media function server are sometimes used as specific implementations of the first, second, and third network elements. It should be pointed out that the foregoing server is only an implementation form of the corresponding network element, and this embodiment of the present application is not limited thereto.
  • the media control server, media storage server and media function server may also be replaced by the first, second and third network elements respectively.
  • FIGS. 3 to 4. A media function interaction method provided by an embodiment of the present application is applied to the media control server side.
  • the first network element is used as the media control server and the second network element respectively
  • the element is a media storage server as an example for illustration.
  • the above server in FIG. 4 may also be replaced with a corresponding network element.
  • the method includes:
  • Step 31 the first network element sends a media function discovery request message for querying the target media function to the second network element.
  • the media control server may determine the target media function corresponding to the first request after receiving the first request related to the media session sent by the requesting party, and then send the above-mentioned step 31 to the media storage server.
  • Media Capabilities Discovery Request message That is, a certain requester triggers the media control server to send the above media function discovery request message, thereby triggering subsequent media resource negotiation.
  • the request related to the media session includes at least one of the following: 1) a call request that needs to establish an IMS session; 2) a playback request; 3) a meeting request; 5) a codec negotiation request; 6) establishing a different SIP network session; 7) data channel session request, etc.
  • this embodiment of the present application may also be other media session-related requests, which will not be described here one by one.
  • a certain requesting party when a certain requesting party needs the service of a certain media session, it sends the first request to the media control server, and the first request indicates the service of the media session that the requesting party expects to obtain, so as to trigger the media control server to initiate The above media capability discovery request.
  • the media control server After receiving the first request sent by the requesting party, the media control server sends the above media function discovery request message to the media storage server, so as to query the media function instance that can provide the target media function.
  • the media function discovery request message may carry at least one of the following information:
  • the media function discovery request message may also carry target media capability information, and the target media capability information includes at least one of the following: codec capability, playback capability, conference capability, data channel media capability, Topological hiding ability.
  • Step 32 the first network element receives the media function discovery request response message sent by the second network element, and the media function discovery request response message is used to feed back at least one candidate media function that matches the target media function instance information.
  • the media function discovery request response message may carry at least one of the following information:
  • the address of the candidate media function instance where the address includes an FQDN address and/or an IP address;
  • the media function discovery request response message also carries at least one of the following information: the matching priority of the candidate media function instance; the load information of the candidate media function instance; the candidate media function instance The location information of the function instance.
  • Step 33 the first network element selects a target media function instance from the at least one candidate media function instance to provide the target media function.
  • the embodiment of the present application realizes the discovery of media functions, and then can provide corresponding media resources for the requesting party.
  • the media control server and the media storage server use SBI to communicate with each other, that is, in the above steps, the media control server sends the media storage server for querying the target media function to the media storage server through the SBI.
  • a function discovery request message ; and, through the SBI, receiving the media function discovery request response message sent by the media storage server.
  • the embodiment of the present application adopts the above-mentioned SBI-based media function discovery and selection mechanism. Compared with the H.248/Megaco protocol-based interaction and negotiation of media capabilities and resources in the prior art, the embodiment of the present application can solve the problems in the prior art.
  • the IMS network interface adopts the H.248 protocol, which leads to poor protocol scalability, and it is difficult to decouple and deploy network elements from different manufacturers.
  • the media control server may select a target media function instance from the at least one candidate media function instance according to the information carried in the media function discovery request response message and the preconfigured media function selection mechanism.
  • selecting an implementation manner of the target media function instance from the at least one candidate media function instance includes at least one of the following:
  • the at least one candidate media function instance includes at least two media function instances, select a target media function instance according to a preconfigured media function selection mechanism. For example:
  • the media function selection mechanism is a random mechanism, selecting a target media function instance from the at least two media function instances based on a random algorithm
  • the media function selection mechanism is a priority mechanism, select a target media function instance from the at least two media function instances according to the order of matching priority;
  • the media function selection mechanism is a localized mechanism, select a target media function instance from the at least two media function instances according to the selection mechanism of the media control server.
  • the selection mechanism of the media control server may include at least one of the following: i) select according to the location information of the user terminal and the location information of the media function instance; ii) select according to the codec capability of the user terminal and the location information of the media function instance The codec capability is selected; iii) the selection is made according to the load information of the media function instance.
  • the embodiment of the present application also provides a media session establishment mechanism, specifically, as shown in Figure 5, including:
  • Step 51 the media control server sends a media session establishment request to the target media function server, the media session establishment request is used for negotiation between the media control server and the media function server to establish a target media resource, and the target media function server is the The media function server where the target media function instance resides.
  • Step 52 the media control server receives a media session establishment request response message returned by the target media function server, and the media session establishment request response message carries relevant information of the target media resource.
  • the media control server may send the relevant information of the target media resource to the requester that triggered the media function discovery request message, so as to realize the establishment of the media session.
  • the requester here is the requester that sends the first request related to the media session above.
  • the target media resource it may also be necessary to update the target media resource.
  • it also includes:
  • Step 61 the media control server sends a media session update request to the target media function server, and the media session update request carries update indication information of the target media resource to instruct the media function server how to update the media resource.
  • Step 62 the media control server receives the media session update request response message returned by the target media function server.
  • the media function server After the media function server receives the media session update request in the above step 61, it updates the target media resource according to the update instruction information, and sends the media session update request to the media control server after the update is completed.
  • Step 71 the media control server sends a media session removal request to the target media function server, and the media session removal request includes a session removal indication and media resource information requested to be removed.
  • Step 72 the media control server receives the media session removal request response message returned by the target media function server.
  • the media control service removes the corresponding media session according to the media session removal request, releases the corresponding media resources, and sends the media session removal request response message to the media control server.
  • the media control server may also acquire the state information of the media function instance in time through a subscription mechanism. As shown in Figure 8, the above method also includes:
  • Step 81 the media control server sends a subscription request message for subscribing to the state information of the first media function instance to the media storage server, and the subscription request message carries a receiving address of the state information of the first media function instance.
  • the subscription request message may also carry indication information of desired subscribed media capabilities.
  • Step 82 The media control server receives a subscription request response message sent by the media storage server, where the subscription request response message is used to indicate whether the status information of the first media function instance has been successfully subscribed.
  • the media storage server judges whether to allow the subscription, and when the subscription is allowed, performs subscription authorization, establishes and maintains a related subscription relationship.
  • the media control server may subsequently receive a media status update message sent by the media storage server, the media status update message carrying the first media function instance Status update information for a media function instance.
  • the embodiment of the present application aggregates multiple media function instances into the same media function server (such as an aggregated media function server or a unified media function server), and the multiple media function instances Including at least one of the following: data channel media function instance; conversion gateway TrGW function instance; IM-MGW function instance; IMS-AGW function instance; media resource processing function instance (such as playback, conference media processing, etc.).
  • the embodiment of the present application can greatly simplify the information interaction process between media functions, improve the efficiency of information interaction, and facilitate the intercommunication of network elements of different manufacturers.
  • a method for interacting with media functions of an IMS network provided by an embodiment of the present application, when applied to a media storage server, includes:
  • Step 91 the second network element receives a media function discovery request message sent by the first network element for querying the target media function.
  • the media function discovery request message may carry at least one of the following information:
  • the media function discovery request message may also carry target media capability information, and the target media capability information includes at least one of the following: codec capability, 5) playback capability, conference capability, data channel media Ability, topological hiding ability.
  • Step 92 The second network element determines at least one candidate media function instance that matches the target media function, and sends a media function discovery request response message to the first network element, and the media function discovery request response message uses Feedback the information of the at least one candidate media function instance.
  • the media function discovery request response message may carry at least one of the following information:
  • the media function discovery request response message also carries at least one of the following information: the matching priority of the candidate media function instance; the load information of the candidate media function instance; the candidate media function instance The location information of the function instance.
  • the discovery of the media function is realized, and then the corresponding media resources can be provided for the requesting party.
  • the embodiment of the present application also includes:
  • Step 101 the media storage server receives media capability registration request information sent by a media function server, where the media function registration request information is used to register the media capability of a media function instance of the media function server.
  • the media capability registration request information may specifically carry at least one of the following information: the type of media function, the identifier of the media function instance, the address of the media function instance, and the media service capability information that the media function instance can provide.
  • a media function may include one or more media capabilities, that is, one or more media capabilities are used to implement related media functions.
  • Step 102 The media storage server saves the correspondence between the media function instance and the media capability according to the media function registration request information, and sends media function registration request response information to the media function server.
  • the media storage server may also receive a subscription request message sent by the media control server for subscribing to the state information of the first media function instance, the The subscription request message carries the receiving address of the status information of the first media function instance; then, the media storage server judges whether to allow the subscription, and when the subscription is allowed, authorizes the subscription, establishes and maintains the relevant subscription relationship. Then, the media storage server sends a subscription request response message to the media control server, where the subscription request response message is used to indicate whether the status information of the first media function instance has been successfully subscribed.
  • the media storage server may send the media state to the media control server A subscription message, where the media status subscription message carries status update information of the first media function instance.
  • the related request and response messages among the media storage server, the media control server and the media function server can all interact through the SBI.
  • a method for interacting with a media function of an IMS network provided by an embodiment of the present application, when applied to a media function server, includes:
  • Step 111 the third network element receives a media session establishment request sent by the first network element, and the media session establishment request is used for negotiation between the first network element and the third network element to establish a target media resource.
  • Step 112 the media function instance sends a media session establishment request response message to the first network element in response to the media session establishment request, and the media session establishment request response message carries information about the target media resource .
  • the media function server may also receive the media session update request sent by the media control server, and the media session update request carries the target media An update indication for the resource. Then, the media control service updates the target media resource according to the update indication information, and sends a media session update request response message to the media control server after the update is completed.
  • the media function server may also receive the media session removal request sent by the media control server, and the media session removal request includes session removal Indication and information about the property whose removal is requested. Then, the media control service removes the corresponding media session according to the media session removal request, releases the corresponding media resources, and sends a media session removal request response message to the media control server.
  • the media function service may also send media capability registration request information to the media storage server, and the media capability registration request information is used to register the media function server The media capability of the mediacapability instance. Then, the media function server receives the media function registration request response information sent by the media storage server.
  • first network element 1200 including:
  • the first sending module 1201 is configured to send a media function discovery request message for querying the target media function to the second network element;
  • the first receiving module 1202 is configured to receive a media function discovery request response message sent by the second network element, where the media function discovery request response message is used to feed back at least one candidate media function instance matching the target media function Information;
  • the first selecting module 1203 is configured to select a target media function instance from the at least one candidate media function instance to provide the target media function.
  • the first selection module is further configured to select a target from the at least one candidate media function instance according to the information carried in the media function discovery request response message and the pre-configured media function selection mechanism Media function instance.
  • the first selection module is further configured to select the target media function instance from the at least one candidate media function instance, including at least one of the following:
  • the at least one candidate media function instance includes only one media function instance, selecting the candidate media function instance as a target media function instance;
  • a target media function instance is selected according to a preconfigured media function selection mechanism.
  • the first selection module is further configured to, when selecting a target media function instance according to a pre-configured media function selection mechanism, include:
  • a target media function instance is selected from the at least two media function instances based on a random algorithm
  • the media function selection mechanism is a priority mechanism, select a target media function instance from the at least two media function instances according to the order of matching priority;
  • a target media function instance is selected from the at least two media function instances according to the selection mechanism of the first network element.
  • the first sending module is further configured to send the media function discovery request message to the second network element when receiving a media session-related request sent by the requesting party.
  • the first network element further includes:
  • the subscription processing module is configured to send a subscription request message for subscribing to the state information of the first media function instance to the second network element, the subscription request message carrying the receiving address of the state information of the first media function instance; receiving A subscription request response message sent by the second network element of the network, where the subscription request response message is used to indicate whether the status information of the first media function instance has been successfully subscribed.
  • the first network element further includes:
  • the second receiving module is configured to receive a media status update message sent by the second network element, where the media status update message carries status update information of the first media function instance.
  • the first network element further includes:
  • the second sending module is configured to send a media session establishment request to a target third network element, and the media session establishment request is used for negotiation between the first network element and the third network element to establish a target media resource, and the target third network element
  • the element is the third network element where the target media function instance is located;
  • a third receiving module configured to receive a media session establishment request response message returned by the target third network element, where the media session establishment request response message carries information about the target media resource;
  • the third sending module is configured to send the relevant information of the target media resource to the requester that triggered the media function discovery request message.
  • the first network element further includes:
  • the fourth sending module is configured to send a media session update request to a target third network element, where the media session update request carries update indication information of the target media resource;
  • the fourth receiving module is configured to receive a media session update request response message returned by the target third network element.
  • the first network element further includes:
  • the fifth sending module is configured to send a media session removal request to a target third network element, where the media session removal request includes a session removal indication and media resource information requested to be removed;
  • the fifth receiving module is configured to receive a media session removal request response message returned by the target third network element.
  • the first network element communicates with the second network element and the media function instance by using a service-based interface SBI.
  • a service-based interface SBI For example, each of the above receiving and sending modules communicates with the second network element and the media function instance based on the service interface SBI.
  • the first network element in this embodiment is the first network element corresponding to the methods shown in the above-mentioned Figures 3-8, and the implementation methods in the above-mentioned embodiments are applicable to the implementation of the first network element In the example, the same technical effect can also be achieved.
  • the above-mentioned first network element provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and the same parts and benefits as the method embodiment in this embodiment will not be discussed here. The effect is described in detail.
  • the embodiment of the present application also provides a first network element 1300, including: a transceiver 1301 and a processor 1302;
  • the transceiver 1301 is configured to send a media function discovery request message for querying a target media function to a second network element; receive a media function discovery request response message sent by the second network element, and the media function discovery request response message The message is used to feed back information about at least one candidate media function instance matching the target media function;
  • the processor 1302 is configured to select a target media function instance from the at least one candidate media function instance to provide the target media function.
  • the transceiver is further configured to select a target media function from the at least one candidate media function instance according to the information carried in the media function discovery request response message and the pre-configured media function selection mechanism instance.
  • the transceiver is further configured to select the target media function instance from the at least one candidate media function instance, including at least one of the following:
  • the at least one candidate media function instance includes only one media function instance, selecting the candidate media function instance as a target media function instance;
  • a target media function instance is selected according to a preconfigured media function selection mechanism.
  • the transceiver is further configured to select a target media function instance according to a pre-configured media function selection mechanism, including:
  • a target media function instance is selected from the at least two media function instances based on a random algorithm
  • the media function selection mechanism is a priority mechanism, select a target media function instance from the at least two media function instances according to the order of matching priority;
  • a target media function instance is selected from the at least two media function instances according to the selection mechanism of the first network element.
  • the transceiver is further configured to send the media function discovery request message to the second network element when receiving a media session-related request sent by the requesting party.
  • the transceiver is further configured to send a subscription request message for subscribing to the state information of the first media function instance to the second network element, the subscription request message carrying the first media function instance The receiving address of the status information; receiving the subscription request response message sent by the second network element of the network, where the subscription request response message is used to indicate whether the status information of the first media function instance is successfully subscribed.
  • the transceiver is further configured to receive a media status update message sent by the second network element, where the media status update message carries status update information of the first media function instance.
  • the transceiver is further configured to send a media session establishment request to a target third network element, and the media session establishment request is used for negotiation between the first network element and the third network element to establish a target media resource , the target third network element is the third network element where the target media function instance is located; receiving a media session establishment request response message returned by the target third network element, the media session establishment request response message carrying related information of the target media resource; and sending the related information of the target media resource to the requester that triggered the media function discovery request message.
  • the transceiver is further configured to send a media session update request to a target third network element, where the media session update request carries update instruction information of the target media resource; and receives the target third network element The media session update request response message returned by the three network elements.
  • the transceiver is further configured to send a media session removal request to a target third network element, where the media session removal request includes a session removal indication and media resource information that is requested to be removed; receiving The media session removal request response message returned by the target third network element.
  • the first network element communicates with the second network element and the media function instance by using a service-based interface SBI. That is, the transceiver uses a service-based interface SBI to communicate with the second network element and the media function instance.
  • the first network element in this embodiment is the first network element corresponding to the methods shown in the above-mentioned Figures 3-8, and the implementation methods in the above-mentioned embodiments are applicable to the implementation of the first network element In the example, the same technical effect can also be achieved.
  • the above-mentioned first network element provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and the same parts and benefits as the method embodiment in this embodiment will not be discussed here. The effect is described in detail.
  • this embodiment of the present application also provides a second network element 1400, including:
  • the first receiving module 1401 is configured to receive a media function discovery request message sent by the first network element for querying the target media function;
  • the first sending module 1402 is configured to determine at least one candidate media function instance that matches the target media function, and send a media function discovery request response message to the first network element, where the media function discovery request response message is used for The information of the at least one candidate media function instance is fed back.
  • the second network element further includes:
  • the second receiving module is configured to receive media capability registration request information sent by a third network element, where the media capability registration request information is used to register the media capability of the media function instance of the third network element;
  • the second sending module is configured to save the corresponding relationship between the media function instance and the media capability according to the media function registration request information, and send media function registration request response information to the third network element.
  • the second network element further includes:
  • the third receiving module is configured to receive a subscription request message sent by the first network element for subscribing to the status information of the first media function instance, the subscription request message carrying the status information of the first media function instance receiving address;
  • the third sending module is configured to send a subscription request response message to the first network element, where the subscription request response message is used to indicate whether the status information of the first media function instance has been successfully subscribed.
  • the second network element further includes:
  • the fourth sending module is configured to send a media state subscription message to the first network element by the second network element when the state of the first media function instance is updated, and the media state subscription message carries Status update information of the first media function instance.
  • the second network element communicates with the first network element and the media function instance by using a service-based interface SBI. That is, each of the above receiving and sending modules uses a service-based interface SBI to communicate with the first network element and the media function instance
  • the second network element in this embodiment is the second network element corresponding to the method shown in FIG. achieve the same technical effect.
  • the above-mentioned second network element provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and it is no longer beneficial to the parts and methods in this embodiment that are the same as those in the method embodiment. The effect is described in detail.
  • the embodiment of the present application also provides a second network element 1500, including: a transceiver 1501 and a processor 1502;
  • the transceiver 1501 is configured to receive a media function discovery request message sent by the first network element for querying the target media function;
  • the processor 1502 is configured to determine at least one candidate media function instance that matches the target media function
  • the transceiver 1501 is further configured to send a media function discovery request response message to the first network element, where the media function discovery request response message is used to feed back the information of the at least one candidate media function instance.
  • the transceiver is further configured to receive media capability registration request information sent by a third network element, where the media capability registration request information is used to register the media capability of the media function instance of the third network element ;
  • the processor is further configured to save the correspondence between the media function instance and the media capability according to the media function registration request information
  • the transceiver is further configured to send media function registration request response information to the third network element.
  • the transceiver is further configured to receive a subscription request message sent by the first network element for subscribing to the state information of the first media function instance, the subscription request message carrying the first A receiving address of the status information of the media function instance; sending a subscription request response message to the first network element, where the subscription request response message is used to indicate whether the status information of the first media function instance has been successfully subscribed.
  • the transceiver is further configured to send a media status subscription message to the first network element when the status of the first media function instance is updated, and the media status subscription message carries There is status update information for the first media function instance.
  • the second network element communicates with the first network element and the media function instance by using a service-based interface SBI. That is, the above transceiver uses a service-based interface (SBI) to communicate with the first network element and the media function instance.
  • SBI service-based interface
  • the second network element in this embodiment is the second network element corresponding to the method shown in FIG. achieve the same technical effect.
  • the above-mentioned second network element provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and it is no longer beneficial to the parts and methods in this embodiment that are the same as those in the method embodiment. The effect is described in detail.
  • this embodiment of the present application also provides a third network element 1600, including:
  • the first receiving module 1601 is configured to receive a media session establishment request sent by the first network element, and the media session establishment request is used for negotiation between the first network element and the third network element to establish a target media resource;
  • the first sending module 1602 is configured to send a media session establishment request response message to the first network element in response to the media session establishment request, where the media session establishment request response message carries information about the target media resource .
  • the third network element further includes:
  • the second receiving module is configured to receive a media session update request sent by the first network element, where the media session update request carries update indication information of the target media resource;
  • the second sending module is configured to update the target media resource according to the update indication information, and send a media session update request response message to the first network element after the update is completed.
  • the third network element further includes:
  • the third receiving module is configured to receive a media session removal request sent by the first network element, where the media session removal request includes a session removal indication and media resource information requested to be removed;
  • the third sending module is configured to, according to the media session removal request, remove the corresponding media session, release the corresponding media resource, and send a media session removal request response message to the first network element.
  • the third network element further includes:
  • the fourth sending module is configured to send media capability registration request information to the second network element, where the media capability registration request information is used to register the media capability of the media function instance of the third network element;
  • the fourth receiving module is configured to receive the media function registration request response information sent by the second network element.
  • multiple media function instances are aggregated in the third network element, and the multiple media function instances include at least one of the following:
  • the third network element communicates with the first network element and the second network element by using a service-based interface SBI. That is, each of the above receiving and sending modules uses a service-based interface SBI to communicate with the first network element and the second network element.
  • the third network element in this embodiment is the third network element corresponding to the method shown in FIG. achieve the same technical effect.
  • the above-mentioned third network element provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and it is no longer beneficial to the same part as the method embodiment in this embodiment. The effect is described in detail.
  • the embodiment of the present application also provides a third network element 1700, including: a transceiver 1701 and a processor 1702;
  • the transceiver 1701 is configured to receive a media session establishment request sent by a first network element, and the media session establishment request is used for negotiation between the first network element and a third network element to establish a target media resource; in response to the media A session establishment request, sending a media session establishment request response message to the first network element, where the media session establishment request response message carries information about the target media resource.
  • the transceiver is further configured to receive a media session update request sent by the first network element, where the media session update request carries update indication information of the target media resource; according to the The indication information is updated, the target media resource is updated, and after the update is completed, a media session update request response message is sent to the first network element.
  • the transceiver is further configured to receive a media session removal request sent by the first network element, the media session removal request includes a session removal indication and media resource information requested to be removed ; According to the media session removal request, remove the corresponding media session, release the corresponding media resources, and send a media session removal request response message to the first network element.
  • the transceiver is further configured to send media capability registration request information to the second network element, where the media capability registration request information is used to register the media capability of the media function instance of the third network element ; Receive the media function registration request response information sent by the second network element.
  • multiple media function instances are aggregated in the third network element, and the multiple media function instances include at least one of the following:
  • the third network element communicates with the first network element and the second network element by using a service-based interface SBI. That is, the above transceiver uses the service-based interface SBI to communicate with the first network element and the second network element.
  • the third network element in this embodiment is the third network element corresponding to the method shown in FIG. achieve the same technical effect.
  • the above-mentioned third network element provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and it is no longer beneficial to the same part as the method embodiment in this embodiment. The effect is described in detail.
  • the embodiment of the present application also provides a first network element 1800, including a processor 1801, a memory 1802, and a computer program stored in the memory 1802 and operable on the processor 1801, the computer program being When executed, the processor 1801 implements each process of the embodiment of the interaction method for the media function performed by the first network element, and can achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a second network element 1900, including a processor 1901, a memory 1902, and a computer program stored in the memory 1902 and operable on the processor 1901, the computer program being When executed, the processor 1901 realizes each process of the embodiment of the interaction method for the media function performed by the second network element, and can achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a third network element 2000, including a processor 2001, a memory 2002, and a computer program stored in the memory 2002 and operable on the processor 2001, the computer program being When executed, the processor 2001 realizes each process of the embodiment of the interaction method for the media function performed by the third network element, and can achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, each process of the above-mentioned interaction method embodiment of the media function is realized, and can To achieve the same technical effect, in order to avoid repetition, no more details are given here.
  • the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of a software product in essence or the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in various embodiments of the present application.
  • a terminal which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本申请公开了一种媒体功能的交互方法及设备,该方法包括:第一网元向第二网元发送用于查询目标媒体功能的媒体功能发现请求消息;所述第一网元接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息。本申请实施例提供的媒体功能的交互方法及设备,通过采用媒体功能聚合的方式以及基于SBI的交互方式,能够大大简化媒体功能之间的信息交互流程,提高信息交互效率,并且有利于异厂家的网元互通。

Description

媒体功能的交互方法及设备
相关申请的交叉引用
本申请基于申请号为202111457809.3,申请日为2021年12月02日的中国专利申请提出,并要求上述中国专利申请的优先权,上述中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请移动通信技术领域,具体涉及一种媒体功能的交互方法及设备。
背景技术
目前,IP多媒体子系统(IP Multimedia Subsystem,IMS)网络中媒体相关功能需要分解到多个不同的媒体网元来实现:
转换网关(Transition Gateway,TrGW):用于实现运营商其他IP网络互通的媒体转换功能;
IP多媒体网关(IP Multimedia Media Gateway,IM-MGW):用于实现IMS网络和其他非IP网络的媒体功能的互通,其中,非IP网络包括传统3G网络,公共交换电话网络(Public Switched Telephone Network,PSTN)等;
IMS接入网关(IMS Access Gateway,IMS-AGW):具有网络地址转换(Network Address Translation,NAT)能力,用于实现信令和媒体在不同IP类型(IPv4,IPv6)地址的转换;
媒体资源功能处理器(Media Resource Function Controller,MRFP):用于负责媒体业务资源的处理,即在媒体资源功能控制器(Media Resource Function Controller,MRFC)的控制下,完成对应用服务器(Application Server,AS)下发的媒体业务资源进行处理,如对用户进行放音、收号、召开会议或录音等处理。
现有技术中的IMS网络中至少存在以下问题:
1)现有IMS网络接口采用H.248协议,扩展性差,不同厂家之间的媒体控制网元与媒体承载网元之间难以解耦,异厂家部署非常困难。
2)现有IMS技术将不同媒体功能分散部署在不同的媒体网元上,这给控制这些媒体带来了不便,并且使不同媒体网元之间的互联互通变得复杂。
发明内容
本申请的至少一个实施例提供了一种媒体功能的交互方法及设备,用于解决现有技术中难以将业务侧与网络侧用户标识关联的问题。
为了解决上述技术问题,本申请是这样实现的:
第一方面,本申请实施例提供了一种IMS网络的媒体功能的交互方法,包括:
媒体控制服务器向第二网元发送用于查询目标媒体功能的媒体功能发现请求消 息;
所述媒体控制服务器接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息;
所述媒体控制服务器从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,以提供所述目标媒体功能。
在一实施例中,所述媒体功能发现请求消息携带有以下信息中的至少一项:
所述目标媒体功能的名称;
所述目标媒体功能的类型;
触发媒体功能发现请求的请求方的类型;
目标媒体能力信息,所述目标媒体能力信息包括以下至少一种:编解码能力、放音能力、会议能力、数据通道媒体能力、拓扑隐藏能力。
在一实施例中,所述媒体功能发现请求响应消息携带有以下信息中的至少一种:
所述候选媒体功能实例的类型;
所述候选媒体功能实例的标识;
所述候选媒体功能实例的地址,所述地址包括全限定域名(Fully Qualified Domain Name,FQDN)地址和/或网际协议(Internet Protocol,IP)地址;
所述候选媒体功能实例能够提供的媒体服务能力信息;
所述候选媒体功能实例的匹配优先级;
所述候选媒体功能实例的负载信息;
所述候选媒体功能实例的位置信息。
在一实施例中,还包括:
所述媒体控制服务器从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,包括:
所述媒体控制服务器根据所述媒体功能发现请求响应消息中携带的信息以及预配置的媒体功能选择机制,从所述至少一个候选媒体功能实例中选择目标媒体功能实例。
在一实施例中,所述从所述至少一个候选媒体功能实例中选择出目标媒体功能实例,包括以下至少一种:
在所述至少一个候选媒体功能实例仅包括一个媒体功能实例的情况下,选择所述候选媒体功能实例作为目标媒体功能实例;
在所述至少一个候选媒体功能实例包括至少两个媒体功能实例的情况下,根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例。
在一实施例中,所述根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例,包括:
在所述媒体功能选择机制为随机random机制时,基于random算法从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
在所述媒体功能选择机制为优先级priority机制时,按照匹配优先级的高低顺序,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
在所述媒体功能选择机制为本地化localized机制时,根据所述媒体控制服务器的选择机制,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例。
在一实施例中,所述媒体控制服务器的选择机制包括以下至少一种:
根据用户终端的位置信息与媒体功能实例的位置信息进行选择;
根据用户终端的编解码能力与媒体功能实例的编解码能力进行选择;
根据媒体功能实例的负载信息进行选择。
在一实施例中,所述媒体控制服务器在接收到请求方发送的与媒体会话相关的请求的情况下,向第二网元发送所述媒体功能发现请求消息。
在一实施例中,所述与媒体会话相关的请求包括以下至少一种:
需要建立IMS会话的呼叫请求;
放音请求;
会议请求;
编解码协商请求;
建立不同会话初始协议(Session initialization Protocol,SIP)网络会话;
数据通道会话请求。
在一实施例中,还包括:
媒体控制服务器向第二网元发送用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;
所述媒体控制服务器接收所述网络第二网元发送的订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
在一实施例中,所述订阅请求消息还携带有期望订阅的媒体能力的指示信息。
在一实施例中,还包括:
所述媒体控制服务器接收所述第二网元发送的媒体状态更新消息,所述媒体状态更新消息携带有所述第一媒体功能实例的状态更新信息。
在一实施例中,还包括:
所述媒体控制服务器向目标第三网元发送媒体会话建立请求,所述媒体会话建立请求用于媒体控制服务器与第三网元之间协商建立目标媒体资源,所述目标第三网元为所述目标媒体功能实例所在的第三网元;
所述媒体控制服务器接收所述目标第三网元返回的媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息;
所述媒体控制服务器将所述目标媒体资源的相关信息发送给触发所述媒体功能发现请求消息的请求方。
在一实施例中,还包括:
所述媒体控制服务器向目标第三网元发送媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;
所述媒体控制服务器接收所述目标第三网元返回的媒体会话更新请求响应消息。
在一实施例中,还包括:
所述媒体控制服务器向目标第三网元发送媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;
所述媒体控制服务器接收所述目标第三网元返回的媒体会话移除请求响应消息。
在一实施例中,所述媒体控制服务器采用基于服务的接口(Service Based Interface,SBI),与所述第二网元及媒体功能实例进行通信。
第二方面,本申请实施例提供了一种IMS网络的媒体功能的交互方法,包括:
第二网元接收媒体控制服务器发送的用于查询目标媒体功能的媒体功能发现请求消息;
所述第二网元确定与所述目标媒体功能相匹配的至少一个候选媒体功能实例,向所述媒体控制服务器发送媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈所述至少一个候选媒体功能实例的信息。
在一实施例中,所述媒体功能发现请求消息携带有以下信息中的至少一种:
所述目标媒体功能的名称;
所述目标媒体功能的类型;
触发媒体功能发现请求的请求方的类型;
目标媒体能力信息,所述目标媒体能力信息包括以下至少一项:编解码能力、放音能力、会议能力、数据通道媒体能力、拓扑隐藏能力。
在一实施例中,所述媒体功能发现请求响应消息携带有以下信息中的至少一种:
所述候选媒体功能实例的类型;
所述候选媒体功能实例的标识;
所述候选媒体功能实例的地址,所述地址包括FQDN地址和/或IP地址;
所述候选媒体功能实例能够提供的媒体服务能力信息;
所述候选媒体功能实例的匹配优先级;
所述候选媒体功能实例的负载信息;
所述候选媒体功能实例的位置信息。
在一实施例中,还包括:
所述第二网元接收第三网元发送的媒体能力注册请求信息,所述媒体功能注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;
所述第二网元根据所述媒体功能注册请求信息,保存所述媒体功能实例与媒体能力之间的对应关系,并向所述第三网元发送媒体功能注册请求响应信息。
在一实施例中,所述媒体能力注册请求信息携带有以下信息中的至少一种:媒体功能的类型、媒体功能实例的标识、媒体功能实例的地址、媒体功能实例能够提供的媒体服务能力信息。
在一实施例中,还包括:
所述第二网元接收所述媒体控制服务器发送的用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;
所述第二网元向所述媒体控制服务器发送订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
在一实施例中,还包括:
在所述第一媒体功能实例的状态发生更新的情况下,所述第二网元向所述媒体控制服务器发送媒体状态订阅消息,所述媒体状态订阅消息携带有所述第一媒体功能实例的状态更新信息。
在一实施例中,所述第二网元采用基于服务的接口SBI,与所述媒体控制服务器及媒体功能实例进行通信。
第三方面,本申请实施例提供了一种IMS网络的媒体功能的交互方法,包括:
第三网元接收媒体控制服务器发送的媒体会话建立请求,所述媒体会话建立请求用于媒体控制服务器与第三网元之间协商建立目标媒体资源;
所述媒体功能实例响应于所述媒体会话建立请求,向所述媒体控制服务器发送媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
在一实施例中,还包括:
所述第三网元接收所述媒体控制服务器发送的媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;
所述媒体控制服务根据所述更新指示信息,进行目标媒体资源的更新,并在更新完成后,向媒体控制服务器发送媒体会话更新请求响应消息。
在一实施例中,还包括:
所述第三网元接收所述媒体控制服务器发送的媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;
所述媒体控制服务根据所述媒体会话移除请求,移除相应的媒体会话,释放相应的媒体资源,并向媒体控制服务器发送媒体会话移除请求响应消息。
在一实施例中,还包括:
所述第三网元向第二网元发送媒体能力注注册请求信息,所述媒体能力注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;
所述第三网元接收所述第二网元发送的媒体功能注册请求响应信息。
在一实施例中,多种媒体功能实例聚合于所述第三网元中,所述多种媒体功能实例包括以下至少一种:
数据通道媒体功能实例;
TrGW功能实例;
IM-MGW功能实例;
IMS-AGW功能实例;
媒体资源处理功能实例。
在一实施例中,所述第三网元采用基于服务的接口SBI,与所述媒体控制服务器及第二网元进行通信。
第四方面,本申请实施例提供了一种媒体控制服务器,包括处理器和收发机,其中:
所述收发机,配置为向第二网元发送用于查询目标媒体功能的媒体功能发现请求消息;以及,接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息;
所述处理器,配置为从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,以提供所述目标媒体功能。
第五方面,本申请实施例提供了一种媒体控制服务器,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如第一方面任一项所述的方法的步骤。
第六方面,本申请实施例提供了一种第二网元,包括处理器和收发机,其中:
所述收发机,配置为接收媒体控制服务器发送的用于查询目标媒体功能的媒体功能发现请求消息;
所述处理器,配置为确定与所述目标媒体功能相匹配的至少一个候选媒体功能实例,向所述媒体控制服务器发送媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈所述至少一个候选媒体功能实例的信息。
第七方面,本申请实施例提供了一种第二网元,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如第二方面任一项所述的方法的步骤。
第八方面,本申请实施例提供了一种第三网元,包括处理器和收发机,其中:
所述收发机,配置为接收媒体控制服务器发送的媒体会话建立请求,所述媒体会话建立请求用于媒体控制服务器与第三网元之间协商建立目标媒体资源;
所述处理器,配置为响应于所述媒体会话建立请求,向所述媒体控制服务器发送媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
第九方面,本申请实施例提供了一种第三网元,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如第三方面任一项所述的方法的步骤。
第十方面,本申请实施例提供了一种计算机可读存储介质,所述计算机可读存储介质上存储有程序,所述程序被处理器执行时,实现如上所述的方法的步骤。
与现有技术相比,本申请实施例提供的媒体功能的交互方法及设备,能够解决现有技术中难以将业务侧与网络侧用户标识关联的问题。本申请实施例通过采用媒体功能聚合的方式以及基于SBI的交互方式,能够大大简化媒体功能之间的信息交互流程,提高信息交互效率,并且有利于异厂家的网元互通。
附图说明
本申请图1为本申请实施例提供的一种基于SBI的聚合媒体功能与相关接口的简化结构图;
图2为本申请实施例提供的一种基于SBI的聚合媒体功能与相关接口的另一结构图;
图3为本申请实施例提供的媒体功能的交互方法的一种流程图;
图4为本申请实施例提供的媒体功能的交互方法的另一种流程图;
图5为本申请实施例提供的媒体会话建立的一种流程图;
图6为本申请实施例提供的媒体会话更新的一种流程图;
图7为本申请实施例提供的媒体会话移除的一种流程图;
图8为本申请实施例提供的媒体功能订阅的一种流程图;
图9为本申请实施例提供的媒体功能的交互方法的另一种流程图;
图10为本申请实施例提供的媒体功能注册的一种流程图;
图11为本申请实施例提供的媒体功能的交互方法的另一种流程图;
图12为本申请一实施例的第一网元的结构示意图;
图13为本申请另一实施例的第一网元的结构示意图;
图14为本申请一实施例的第二网元的结构示意图;
图15为本申请另一实施例的第二网元的结构示意图;
图16为本申请一实施例的第三网元的结构示意图;
图17为本申请另一实施例的第三网元的结构示意图;
图18为本申请又一实施例的第一网元的结构示意图;
图19为本申请又一实施例的第二网元的结构示意图;
图20为本申请又一实施例的第三网元的结构示意图。
具体实施方式
下面将参照附图更详细地描述本申请的示例性实施例。虽然附图中显示了本申请的示例性实施例,然而应当理解,可以以各种形式实现本申请而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本申请,并且能够将本申请的范围完整的传达给本领域的技术人员。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺 序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。说明书以及权利要求中“和/或”表示所连接对象的至少其中之一。
本文所描述的技术不限于NR系统以及长期演进型(Long Time Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,并且也可用于各种无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)和其他系统。术语“系统”和“网络”常被可互换地使用。CDMA系统可实现诸如CDMA2000、通用地面无线电接入(Universal Terrestrial Radio Access,UTRA)等无线电技术。UTRA包括宽带CDMA(Wideband Code Division Multiple Access,WCDMA)和其他CDMA变体。TDMA系统可实现诸如全球移动通信系统(Global System for Mobile Communication,GSM)之类的无线电技术。OFDMA系统可实现诸如超移动宽带(UltraMobile Broadband,UMB)、演进型UTRA(Evolution-UTRA,E-UTRA)、IEEE 802.21(Wi-Fi)、IEEE802.16(WiMAX)、IEEE 802.20、Flash-OFDM等无线电技术。UTRA和E-UTRA是通用移动电信系统(Universal Mobile Telecommunications System,UMTS)的部分。LTE和更高级的LTE(如LTE-A)是使用E-UTRA的新UMTS版本。UTRA、E-UTRA、UMTS、LTE、LTE-A以及GSM在来自名为“第三代伙伴项目”(3rd Generation Partnership Project,3GPP)的组织的文献中描述。CDMA2000和UMB在来自名为“第三代伙伴项目2”(3GPP2)的组织的文献中描述。本文所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。然而,以下描述出于示例目的描述了NR系统,并且在以下大部分描述中使用NR术语,尽管这些技术也可应用于NR系统应用以外的应用。
以下描述提供示例而并非限定权利要求中阐述的范围、适用性或者配置。可以对所讨论的要素的功能和布置作出改变而不会脱离本公开的精神和范围。各种示例可恰适地省略、替代、或添加各种规程或组件。例如,可以按不同于所描述的次序来执行所描述的方法,并且可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
如背景技术所述的,现有技术中的IMS网络中存在着异厂家之间的媒体控制网元与媒体承载网元之间互通困难,媒体功能的控制实现存在不便等问题,为了解决以上问题中的至少一种,本申请提供了一种IMS网络的媒体功能的交互方法,用于实现IMS网络中媒体网元统一调用和交互机制,解决现有技术采用H.248协议进行媒体交互调用方式带来的弊端。
本申请实施例提出了一种基于SBI的媒体功能模块、网络架构以及媒体功能发现和选择机制,这里,SBI是指基于服务化的接口(Service Based Interface,SBI)。具体的:
1)通过在媒体资源交互机制中引入SBI机制,实现IMS网络对媒体模块功能的发现和选择。该实现机制使不同厂家之间媒体控制模块与媒体功能模块之间得以解耦,相关功能模块的部署变得更加灵活。
2)本申请实施例还定义了基于SBI的媒体功能模块,该媒体聚合功能模块可以称作聚合媒体功能(Centralized Media Function,CMF)或统一化媒体功能(Unified Media Function,UMF):该媒体功能模块可以包含全部或部分IMS网络媒体功能,包括但不 限于TrGW,IM-MGW,IMS-AGW,MRFP和数据通道媒体功能等。这些媒体功能可以通过SBI被相应的媒体控制服务器发现和选择。
3)本申请实施例还定义了基于SBI的媒体功能调用网络架构。
如图1所示,本申请实施例提供的一种基于SBI的聚合媒体功能与相关接口的简化结构图。其中,图1中的聚合媒体功能也可以称作为聚合媒体功能模块、统一化媒体功能或统一化媒体功能模块等。其中:
第一网元是IMS网络中负责控制媒体资源的服务器。
在一实施例中,第一网元可以为以下之一:
媒体控制服务器(Media Control Server,MCS);
数据通道控制功能(Data Channel Control Function,DCCF);
数据通道服务器(Data Channel Server,DCS);
DC服务控制器(Data Channel Server-Controller,DCS-C);
数据通道信令功能(Data Channel Signaling Function,DCSF);
统一控制功能(Unified Control Function,UCF);
集中控制功能(Centralized Control Function,CCF);
应用服务器(Application Server,AS);
媒体网关控制功能(Media Gateway Control Function,MGCF);
互联边界控制功能(Inter-connect Boarder Control Function,IBCF);
网络存储服务器(Network Repository Server,NRS);
媒体存储功能(Media Repository Function,MRF);
媒体资源控制功能(Media Resource Control Function,MRCF);
IMS网元;
IMS网络功能。
第二网元负责媒体功能的管理和发现等。
在一实施例中,第二网元可以为以下之一:
网络存储库功能或网络存储功能(Network Repository Function,NRF);
媒体存储服务器(Media Repository Server,MRS);
网络存储服务器(Network Repository Server,NRS);
媒体存储功能(Media Repository Function,MRF)。
第三网元可包含全部或部分IMS网络媒体功能,包括但不限于TrGW,IM-MGW,IMS-AGW,MRFP,数据通道媒体功能,等。这些媒体功能可以通过SBI被相应的第一网元(如媒体控制服务器)发现和选择。
在一实施例中,第三网元可以为以下之一:
媒体功能服务器(Media Function Server,MFS);
统一媒体功能(Unified Media Function,UMF);
集中媒体功能(Centralized Media Function,CMF);
数据通道媒体功能(Data Channel Media Functionality,DCMF);
数据通道媒体(Data Channel Media,DCM);
DC网络功能实例;
DC媒体网络功能实例;
DC媒体服务;
数据通道媒体服务器(Data Channel Server-Media,DCS-M);
媒体资源功能(Media Resource Function,MRF);
媒体资源功能处理器(Media Resource Function Processor,MRFP);
IMS-AGW;
IM-MGW;
TrGW;
其他IMS媒体功能或其他第五代移动通信技术核心网(5th Generation Mobile Communication Technology Core,5GC)媒体功能。
其中,其他IMS媒体功能或其他5GC媒体功能是指不同于IMS-AGW、MRFP、IM-MGw、TrGW、用户面功能(User Plane Function,UPF)的IMS媒体功能或5GC媒体功能。
图2提供了基于SBI的聚合媒体功能模块与接口的一种更为详细的结构图。其中:
UMF(CMF)表示聚合媒体功能模块或统一化媒体功能模块。该功能模块统一可以包含全部或部分IMS网络媒体功能,包括但不限于TrGW,IM-MGW,IMS-AGW,MRFP,数据通道媒体功能等。这些媒体功能可以通过SBI被相应的媒体控制服务器调用。图2中的媒体控制服务器包括AS、MGCF、IBCF和数据通道服务器等。媒体存储服务器,主要负责媒体功能与能力的存储,调用,注册,发现与订阅等。
图2中,各个媒体控制服务器与聚合媒体功能模块(统一化媒体功能模块)之间的接口称作IF1,各个媒体控制服务器与媒体存储服务器之间的接口称作IF2。
图2中还包括以下网元:
AS(应用服务器):表示IMS网络中的应用服务器,负责服务集中和连续性应用服务器(Server Centralization and Continuity Application Server,SCC-AS)与多媒体电话(MultiMedia Telephony,MMTEL)等功能。
MGCF,负责控制IM-MGw的控制模块,负责IMS与CS网络之间的交互。
IBCF:负责控制TrGW,并完成不同运营商IMS网络之间或IMS网络与其他网络(如CS网络)之间边界互通的功能。
P-CSCF:表示代理呼叫会话控制功能(Proxy-Call Session Control Funtion),负责控制IMS-AGW,进行媒体资源控制与编解码协商。
数据通道服务器或Data Channel Control Function,负责控制数据通道建立与媒体资源协商的服务器。
下文中,有时候也使用媒体控制服务器、媒体存储服务器和媒体功能服务器,作为所述第一、第二、第三网元的具体实现。需要指出的是,上述服务器仅是对应网元的一种实现形式,本申请实施例并不局限于此。例如,在下文以及图4~图8、图10中,所述媒体控制服务器、媒体存储服务器和媒体功能服务器,也可以分别使用第一、第二、第三网元来替换。
请参照图3~图4,本申请实施例提供的一种媒体功能的交互方法,在应用于媒体控制服务器侧时,其中,图4中分别以第一网元为媒体控制服务器、第二网元为媒体存储服务器为例进行说明,当然,图4中的上述服务器也可以替换为对应的网元。如图3所示,该方法包括:
步骤31,第一网元向第二网元发送用于查询目标媒体功能的媒体功能发现请求消息。
这里,所述媒体控制服务器可以在接收到请求方发送的与媒体会话相关的第一请求后,确定所述第一请求对应的目标媒体功能,然后向媒体存储服务器发送上述步骤31中所述的媒体功能发现请求消息。即,由某个请求方触发媒体控制服务器发送上述媒体功能发现请求消息,进而触发后续的媒体资源协商。
这里,所述与媒体会话相关的请求包括以下至少一种:1)需要建立IMS会话的呼叫请求;2)放音请求;3)会议请求;5)编解码协商请求;6)建立不同SIP网络会话; 7)数据通道会话请求等。当然,本申请实施例还可以是其他的与媒体会话相关的请求,此处不再一一举例说明。
例如,某个请求方在需要某个媒体会话的服务时,向媒体控制服务器发送所述第一请求,所述第一请求指示了请求方期望获得的媒体会话的服务,以触发媒体控制服务器发起上述媒体功能发现请求。媒体控制服务器在接收到该请求方发送的第一请求后,向所述媒体存储服务器发送上述媒体功能发现请求消息,以查询能够提供所述目标媒体功能的媒体功能实例。
具体的,所述媒体功能发现请求消息可以携带有以下信息中的至少一项:
1)所述目标媒体功能的名称;
2)所述目标媒体功能的类型;
3)触发媒体功能发现请求的请求方的类型。
在一实施例中,所述媒体功能发现请求消息还可以携带有目标媒体能力信息,所述目标媒体能力信息包括以下至少一项:编解码能力、放音能力、会议能力、数据通道媒体能力、拓扑隐藏能力。
步骤32,所述第一网元接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息。
这里,所述媒体功能发现请求响应消息可以携带有以下信息中的至少一项:
1)所述候选媒体功能实例的类型,这里,候选媒体功能实例的类型通常与所述目标媒体功能的类型相匹配;
2)所述候选媒体功能实例的标识;
3)所述候选媒体功能实例的地址,所述地址包括FQDN地址和/或IP地址;
4)所述候选媒体功能实例能够提供的媒体服务能力信息。
在一实施例中,所述媒体功能发现请求响应消息还携带有以下信息中的至少一项:所述候选媒体功能实例的匹配优先级;所述候选媒体功能实例的负载信息;所述候选媒体功能实例的位置信息。
步骤33,所述第一网元从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,以提供所述目标媒体功能。
通过以上步骤,本申请实施例实现了媒体功能的发现,进而能够为请求方提供相应的媒体资源。
需要说明的是,本申请实施例媒体控制服务器与媒体存储服务器之间采用SBI进行通信,也就是说,以上步骤中,媒体控制服务器通过SBI,向媒体存储服务器发送用于查询目标媒体功能的媒体功能发现请求消息;以及,通过SBI,接收所述媒体存储服务器发送的所述媒体功能发现请求响应消息。本申请实施例采用上述基于SBI的媒体功能发现与选择机制,相对于现有技术的基于H.248/Megaco协议进行媒体能力与资源的交互与协商方式,本申请实施例能够解决现有技术中IMS网络接口采用H.248协议导致的协议扩展性差,异厂家网元之间难以解耦和部署的问题。
在上述步骤33中,所述媒体控制服务器可以根据所述媒体功能发现请求响应消息中携带的信息以及预配置的媒体功能选择机制,从所述至少一个候选媒体功能实例中选择目标媒体功能实例。
具体的,从所述至少一个候选媒体功能实例中选择出所述目标媒体功能实例的实现方式,包括以下至少一种:
1)在所述至少一个候选媒体功能实例仅包括一个媒体功能实例的情况下,选择所述候选媒体功能实例作为目标媒体功能实例。
2)在所述至少一个候选媒体功能实例包括至少两个媒体功能实例的情况下,根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例。例如:
2a)在所述媒体功能选择机制为随机random机制时,基于random算法从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
2b)在所述媒体功能选择机制为优先级priority机制时,按照匹配优先级的高低顺序,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
2c)在所述媒体功能选择机制为本地化localized机制时,根据所述媒体控制服务器的选择机制,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例。这里,所述媒体控制服务器的选择机制又可以包括以下至少一种:i)根据用户终端的位置信息与媒体功能实例的位置信息进行选择;ii)根据用户终端的编解码能力与媒体功能实例的编解码能力进行选择;iii)根据媒体功能实例的负载信息进行选择。
在上述步骤32之后,本申请实施例还提供了媒体会话建立机制,具体的,如图5所示,包括:
步骤51,所述媒体控制服务器向目标媒体功能服务器发送媒体会话建立请求,所述媒体会话建立请求用于媒体控制服务器与媒体功能服务器之间协商建立目标媒体资源,所述目标媒体功能服务器为所述目标媒体功能实例所在的媒体功能服务器。
步骤52,所述媒体控制服务器接收所述目标媒体功能服务器返回的媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
后续,所述媒体控制服务器可以将所述目标媒体资源的相关信息发送给触发所述媒体功能发现请求消息的请求方,从而实现媒体会话的建立。这里的请求方,即上文中发送所述与媒体会话相关的第一请求的请求方。
本申请实施例中,还可能需要对目标媒体资源进行更新,此时,如图6所示,还包括:
步骤61,所述媒体控制服务器向目标媒体功能服务器发送媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息,以指示媒体功能服务器如何进行媒体资源更新。
步骤62,所述媒体控制服务器接收所述目标媒体功能服务器返回的媒体会话更新请求响应消息。
这里,所述媒体功能服务器接收到上述步骤61中的媒体会话更新请求后,根据所述更新指示信息,进行目标媒体资源的更新,并在更新完成后,向媒体控制服务器发送的媒体会话更新请求响应消息,以指示具体的更新结果,如,更新成功或更新失败等信息。
如图7所示,在请求方不再需要所述媒体会话等情况下,还包括:
步骤71,所述媒体控制服务器向目标媒体功能服务器发送媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息。
步骤72,所述媒体控制服务器接收所述目标媒体功能服务器返回的媒体会话移除请求响应消息。
这里,所述媒体控制服务根据所述媒体会话移除请求,移除相应的媒体会话,释放相应的媒体资源,并向媒体控制服务器发送所述媒体会话移除请求响应消息。
本申请实施例中,媒体控制服务器还可以通过订阅机制,来及时获取媒体功能实例的状态信息。如图8所示,以上方法还包括:
步骤81,所述媒体控制服务器向媒体存储服务器发送用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址。
这里,所述订阅请求消息还可以携带有期望订阅的媒体能力的指示信息。
步骤82,所述媒体控制服务器接收所述媒体存储服务器发送的订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
这里,所述媒体存储服务器接收到所述订阅请求消息后,判断是否允许所述订阅,在允许订阅时,进行订阅授权,建立并维护相关的订阅关系。
这样,在成功订阅了所述第一媒体功能实例的状态信息之后,后续所述媒体控制服务器还可以接收所述媒体存储服务器发送的媒体状态更新消息,所述媒体状态更新消息携带有所述第一媒体功能实例的状态更新信息。
本申请实施例中,图4~图8中涉及的相关请求及响应消息,都可以通过SBI进行交互。
另外,为了便于对各个媒体功能进行管理,本申请实施例将多种媒体功能实例聚合于同一个媒体功能服务器(如聚合媒体功能服务器或统一化媒体功能服务器)中,所述多种媒体功能实例包括以下至少一种:数据通道媒体功能实例;转换网关TrGW功能实例;IM-MGW功能实例;IMS-AGW功能实例;媒体资源处理功能实例(如放音,会议媒体处理等)。
通过采用上述聚合方式以及基于SBI的交互方式,本申请实施例能够大大简化媒体功能之间的信息交互流程,提高信息交互效率,并且有利于异厂家的网元互通。
请参照图9并请结合前文的图4,本申请实施例提供的一种IMS网络的媒体功能的交互方法,在应用于媒体存储服务器时,包括:
步骤91,第二网元接收第一网元发送的用于查询目标媒体功能的媒体功能发现请求消息。
这里,所述媒体功能发现请求消息可以携带有以下信息中的至少一项:
1)所述目标媒体功能的名称;
2)所述目标媒体功能的类型;
3)触发媒体功能发现请求的请求方的类型。
在一实施例中,所述媒体功能发现请求消息还可以携带有目标媒体能力信息,所述目标媒体能力信息包括以下至少一项:编解码能力、5)放音能力、会议能力、数据通道媒体能力、拓扑隐藏能力。
步骤92,所述第二网元确定与所述目标媒体功能相匹配的至少一个候选媒体功能实例,向所述第一网元发送媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈所述至少一个候选媒体功能实例的信息。
具体的,所述媒体功能发现请求响应消息可以携带有以下信息中的至少一项:
1)所述候选媒体功能实例的类型,这里,候选媒体功能实例的类型通常与所述目标媒体功能的类型相匹配;
2)所述候选媒体功能实例的标识;
3)所述候选媒体功能实例的地址,所述地址包括FQDN和/或IP地址;
4)所述候选媒体功能实例能够提供的媒体服务能力信息。
在一实施例中,所述媒体功能发现请求响应消息还携带有以下信息中的至少一项:所述候选媒体功能实例的匹配优先级;所述候选媒体功能实例的负载信息;所述候选媒体功能实例的位置信息。
通过以上步骤实现了媒体功能的发现,进而能够为请求方提供相应的媒体资源。
请参照图10,本申请实施例在上述步骤91之前,还包括:
步骤101,所述媒体存储服务器接收媒体功能服务器发送的媒体能力注册请求信息,所述媒体功能注册请求信息用于注册所述媒体功能服务器的媒体功能实例的媒体能力。
这里,所述媒体能力注册请求信息具体可以携带有以下信息中的至少一种:媒体功能的类型、媒体功能实例的标识、媒体功能实例的地址、媒体功能实例能够提供的媒体服务能力信息。媒体功能可以包括一种或多种媒体能力,即通过一种或多种媒体能力实现相关的媒体功能。
步骤102,所述媒体存储服务器根据所述媒体功能注册请求信息,保存所述媒体功能实例与媒体能力之间的对应关系,并向所述媒体功能服务器发送媒体功能注册请求响应信息。
如前文的图8所示,本申请实施例的以上方法中,所述媒体存储服务器还可以接收所述媒体控制服务器发送的用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;然后,所述媒体存储服务器判断是否允许所述订阅,在允许订阅时,进行订阅授权,建立并维护相关的订阅关系。然后,所述媒体存储服务器向所述媒体控制服务器发送订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
这样,在成功订阅了所述第一媒体功能实例的状态信息之后,后续在所述第一媒体功能实例的状态发生更新的情况下,所述媒体存储服务器可以向所述媒体控制服务器发送媒体状态订阅消息,所述媒体状态订阅消息携带有所述第一媒体功能实例的状态更新信息。
类似的,本申请实施例中,媒体存储服务器、媒体控制服务器以及媒体功能服务器之间的相关请求及响应消息,都可以通过SBI进行交互。
请参照图11并请结合前文的图5,本申请实施例提供的一种IMS网络的媒体功能的交互方法,在应用于媒体功能服务器时,包括:
步骤111,第三网元接收第一网元发送的媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源。
步骤112,所述媒体功能实例响应于所述媒体会话建立请求,向所述第一网元发送媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
如前文的图6所示,本申请实施例的以上方法中,所述媒体功能服务器还可以接收所述媒体控制服务器发送的媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息。然后,所述媒体控制服务根据所述更新指示信息,进行目标媒体资源的更新,并在更新完成后,向媒体控制服务器发送媒体会话更新请求响应消息。
如前文的图7所示,本申请实施例的以上方法中,所述媒体功能服务器还可以接收所述媒体控制服务器发送的媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息。然后,所述媒体控制服务根据所述媒体会话移除请求,移除相应的媒体会话,释放相应的媒体资源,并向媒体控制服务器发送媒体会话移除请求响应消息。
如前文的图10所示,本申请实施例的以上方法中,所述媒体功能服务还可以向媒体存储服务器发送媒体能力注册请求信息,所述媒体能力注册请求信息用于注册所述媒体功能服务器的媒体功能实例的媒体能力。然后,所述媒体功能服务器接收所述媒体存储服务器发送的媒体功能注册请求响应信息。
以上介绍了本申请实施例的各种方法。下面将进一步提供实施上述方法的设备。
请参考图12,本申请实施例还提供一种第一网元1200,包括:
第一发送模块1201,配置为向第二网元发送用于查询目标媒体功能的媒体功能发现请求消息;
第一接收模块1202,配置为接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息;
第一选择模块1203,配置为从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,以提供所述目标媒体功能。
在一实施例中,所述第一选择模块,还配置为根据所述媒体功能发现请求响应消息中携带的信息以及预配置的媒体功能选择机制,从所述至少一个候选媒体功能实例中选择目标媒体功能实例。
具体的,所述第一选择模块,还配置为在从所述至少一个候选媒体功能实例中选择出所述目标媒体功能实例,包括以下至少一种:
在所述至少一个候选媒体功能实例仅包括一个媒体功能实例的情况下,选择所述候选媒体功能实例作为目标媒体功能实例;
在所述至少一个候选媒体功能实例包括至少两个媒体功能实例的情况下,根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例。
在一实施例中,所述第一选择模块,还配置为在根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例时,包括:
在所述媒体功能选择机制为随机random机制时,基于random算法从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
在所述媒体功能选择机制为优先级priority机制时,按照匹配优先级的高低顺序,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
在所述媒体功能选择机制为本地化localized机制时,根据所述第一网元的选择机制,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例。
在一实施例中,所述第一发送模块,还配置为在接收到请求方发送的与媒体会话相关的请求的情况下,向第二网元发送所述媒体功能发现请求消息。
在一实施例中,所述第一网元还包括:
订阅处理模块,配置为向第二网元发送用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;接收所述网络第二网元发送的订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
在一实施例中,所述第一网元还包括:
第二接收模块,配置为接收所述第二网元发送的媒体状态更新消息,所述媒体状态更新消息携带有所述第一媒体功能实例的状态更新信息。
在一实施例中,所述第一网元还包括:
第二发送模块,配置为向目标第三网元发送媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源,所述目标第三网元为所述目标媒体功能实例所在的第三网元;
第三接收模块,配置为接收所述目标第三网元返回的媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息;
第三发送模块,配置为将所述目标媒体资源的相关信息发送给触发所述媒体功能发现请求消息的请求方。
在一实施例中,所述第一网元还包括:
第四发送模块,配置为向目标第三网元发送媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;
第四接收模块,配置为接收所述目标第三网元返回的媒体会话更新请求响应消息。
在一实施例中,所述第一网元还包括:
第五发送模块,配置为向目标第三网元发送媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;
第五接收模块,配置为接收所述目标第三网元返回的媒体会话移除请求响应消息。
在一实施例中,所述第一网元采用基于服务的接口SBI,与所述第二网元及媒体功能实例进行通信。如,以上各个接收、发送模块,均基于服务的接口SBI,与所述第二网元及媒体功能实例进行通信。
需要说明的是,该实施例中的第一网元是与上述图3~8所示的方法对应的第一网元,上述各实施例中的实现方式均适用于该第一网元的实施例中,也能达到相同的技术效果。本申请实施例提供的上述第一网元,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
请参考图13,本申请实施例还提供一种第一网元1300,包括:收发机1301和处理器1302;
所述收发机1301,配置为向第二网元发送用于查询目标媒体功能的媒体功能发现请求消息;接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息;
所述处理器1302,配置为从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,以提供所述目标媒体功能。
在一实施例中,所述收发机,还配置为根据所述媒体功能发现请求响应消息中携带的信息以及预配置的媒体功能选择机制,从所述至少一个候选媒体功能实例中选择目标媒体功能实例。
在一实施例中,所述收发机,还配置为从所述至少一个候选媒体功能实例中选择出所述目标媒体功能实例,包括以下至少一种:
在所述至少一个候选媒体功能实例仅包括一个媒体功能实例的情况下,选择所述候选媒体功能实例作为目标媒体功能实例;
在所述至少一个候选媒体功能实例包括至少两个媒体功能实例的情况下,根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例。
在一实施例中,所述收发机,还配置为根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例,包括:
在所述媒体功能选择机制为随机random机制时,基于random算法从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
在所述媒体功能选择机制为优先级priority机制时,按照匹配优先级的高低顺序,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
在所述媒体功能选择机制为本地化localized机制时,根据所述第一网元的选择机制,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例。
在一实施例中,所述收发机,还配置为在接收到请求方发送的与媒体会话相关的请求的情况下,向第二网元发送所述媒体功能发现请求消息。
在一实施例中,所述收发机,还配置为向第二网元发送用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;接收所述网络第二网元发送的订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
在一实施例中,所述收发机,还配置为接收所述第二网元发送的媒体状态更新消息,所述媒体状态更新消息携带有所述第一媒体功能实例的状态更新信息。
在一实施例中,所述收发机,还配置为向目标第三网元发送媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源,所述目标第三网元为所述目标媒体功能实例所在的第三网元;接收所述目标第三网元返回的媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息;将所述目标媒体资源的相关信息发送给触发所述媒体功能发现请求消息的请求方。
在一实施例中,所述收发机,还配置为向目标第三网元发送媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;接收所述目标第三网元返回的媒体会话更新请求响应消息。
在一实施例中,所述收发机,还配置为向目标第三网元发送媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;接收所述目标第三网元返回的媒体会话移除请求响应消息。
在一实施例中,所述第一网元采用基于服务的接口SBI,与所述第二网元及媒体功能实例进行通信。即,所述收发机,采用基于服务的接口SBI,与所述第二网元及媒体功能实例进行通信。
需要说明的是,该实施例中的第一网元是与上述图3~8所示的方法对应的第一网元,上述各实施例中的实现方式均适用于该第一网元的实施例中,也能达到相同的技术效果。本申请实施例提供的上述第一网元,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
请参考图14,本申请实施例还提供一种第二网元1400,包括:
第一接收模块1401,配置为接收第一网元发送的用于查询目标媒体功能的媒体功能发现请求消息;
第一发送模块1402,配置为确定与所述目标媒体功能相匹配的至少一个候选媒体功能实例,向所述第一网元发送媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈所述至少一个候选媒体功能实例的信息。
在一实施例中,所述第二网元还包括:
第二接收模块,配置为接收第三网元发送的媒体能力注册请求信息,所述媒体功能注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;
第二发送模块,配置为根据所述媒体功能注册请求信息,保存所述媒体功能实例与媒体能力之间的对应关系,并向所述第三网元发送媒体功能注册请求响应信息。
在一实施例中,所述第二网元还包括:
第三接收模块,配置为接收所述第一网元发送的用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;
第三发送模块,配置为向所述第一网元发送订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
在一实施例中,所述第二网元还包括:
第四发送模块,配置为在所述第一媒体功能实例的状态发生更新的情况下,所述第二网元向所述第一网元发送媒体状态订阅消息,所述媒体状态订阅消息携带有所述第一媒体功能实例的状态更新信息。
在一实施例中,所述第二网元采用基于服务的接口SBI,与所述第一网元及媒体功能实例进行通信。即以上的各个接收、发送模块,采用基于服务的接口SBI,与所述第一网元及媒体功能实例进行通信
需要说明的是,该实施例中的第二网元是与上述图9所示的方法对应的第二网元,上述各实施例中的实现方式均适用于该设备的实施例中,也能达到相同的技术效果。本申请实施例提供的上述第二网元,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
请参考图15,本申请实施例还提供一种第二网元1500,包括:收发机1501和处理器1502;
所述收发机1501,配置为接收第一网元发送的用于查询目标媒体功能的媒体功能发现请求消息;
所述处理器1502,配置为确定与所述目标媒体功能相匹配的至少一个候选媒体功能实例;
所述收发机1501,还配置为向所述第一网元发送媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈所述至少一个候选媒体功能实例的信息。
在一实施例中,所述收发机,还配置为接收第三网元发送的媒体能力注册请求信息,所述媒体功能注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;
所述处理器,还配置为根据所述媒体功能注册请求信息,保存所述媒体功能实例与媒体能力之间的对应关系;
所述收发机,还配置为向所述第三网元发送媒体功能注册请求响应信息。
在一实施例中,所述收发机,还配置为接收所述第一网元发送的用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;向所述第一网元发送订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
在一实施例中,所述收发机,还配置为在所述第一媒体功能实例的状态发生更新的情况下,向所述第一网元发送媒体状态订阅消息,所述媒体状态订阅消息携带有所述第一媒体功能实例的状态更新信息。
在一实施例中,所述第二网元采用基于服务的接口SBI,与所述第一网元及媒体功能实例进行通信。即以上收发机,采用基于服务的接口SBI,与所述第一网元及媒体功能实例进行通信。
需要说明的是,该实施例中的第二网元是与上述图9所示的方法对应的第二网元,上述各实施例中的实现方式均适用于该设备的实施例中,也能达到相同的技术效果。本申请实施例提供的上述第二网元,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
请参考图16,本申请实施例还提供一种第三网元1600,包括:
第一接收模块1601,配置为接收第一网元发送的媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源;
第一发送模块1602,配置为响应于所述媒体会话建立请求,向所述第一网元发送媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
在一实施例中,所述第三网元还包括:
第二接收模块,配置为接收所述第一网元发送的媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;
第二发送模块,配置为根据所述更新指示信息,进行目标媒体资源的更新,并在更新完成后,向第一网元发送媒体会话更新请求响应消息。
在一实施例中,所述第三网元还包括:
第三接收模块,配置为接收所述第一网元发送的媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;
第三发送模块,配置为根据所述媒体会话移除请求,移除相应的媒体会话,释放相应的媒体资源,并向第一网元发送媒体会话移除请求响应消息。
在一实施例中,所述第三网元还包括:
第四发送模块,配置为向第二网元发送媒体能力注注册请求信息,所述媒体能力注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;
第四接收模块,配置为接收所述第二网元发送的媒体功能注册请求响应信息。
在一实施例中,多种媒体功能实例聚合于所述第三网元中,所述多种媒体功能实例包括以下至少一种:
数据通道媒体功能实例;
TrGW功能实例;
IM-MGW功能实例;
IMS-AGW功能实例;
媒体资源处理功能实例。
在一实施例中,所述第三网元采用基于服务的接口SBI,与所述第一网元及第二网元进行通信。即,以上各个接收、发送模块,均采用基于服务的接口SBI,与所述第一网元及第二网元进行通信。
需要说明的是,该实施例中的第三网元是与上述图11所示的方法对应的第三网元,上述各实施例中的实现方式均适用于该设备的实施例中,也能达到相同的技术效果。本申请实施例提供的上述第三网元,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
请参考图17,本申请实施例还提供一种第三网元1700,包括:收发机1701和处理器1702;
所述收发机1701,配置为接收第一网元发送的媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源;响应于所述媒体会话建立请求,向所述第一网元发送媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
在一实施例中,所述收发机,还配置为接收所述第一网元发送的媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;根据所述更新指示信息,进行目标媒体资源的更新,并在更新完成后,向第一网元发送媒体会话更新请求响应消息。
在一实施例中,所述收发机,还配置为接收所述第一网元发送的媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;根据所述媒体会话移除请求,移除相应的媒体会话,释放相应的媒体资源,并向第一网元发送媒体会话移除请求响应消息。
在一实施例中,所述收发机,还配置为向第二网元发送媒体能力注注册请求信息,所述媒体能力注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;接收所述第二网元发送的媒体功能注册请求响应信息。
在一实施例中,多种媒体功能实例聚合于所述第三网元中,所述多种媒体功能实例包括以下至少一种:
数据通道媒体功能实例;
TrGW功能实例;
IM-MGW功能实例;
IMS-AGW功能实例;
媒体资源处理功能实例。
在一实施例中,所述第三网元采用基于服务的接口SBI,与所述第一网元及第二网元进行通信。即,以上收发机,采用基于服务的接口SBI,与所述第一网元及第二网元进行通信。
需要说明的是,该实施例中的第三网元是与上述图11所示的方法对应的第三网元,上述各实施例中的实现方式均适用于该设备的实施例中,也能达到相同的技术效果。本申请实施例提供的上述第三网元,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
请参考图18,本申请实施例还提供一种第一网元1800,包括处理器1801,存储器1802,存储在存储器1802上并可在所述处理器1801上运行的计算机程序,该计算机程序被处理器1801执行时实现上述由第一网元执行的媒体功能的交互方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
请参考图19,本申请实施例还提供一种第二网元1900,包括处理器1901,存储器1902,存储在存储器1902上并可在所述处理器1901上运行的计算机程序,该计算机程序被处理器1901执行时实现上述由第二网元执行的媒体功能的交互方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
请参考图20,本申请实施例还提供一种第三网元2000,包括处理器2001,存储器2002,存储在存储器2002上并可在所述处理器2001上运行的计算机程序,该计算机程序被处理器2001执行时实现上述由第三网元执行的媒体功能的交互方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种计算机可读存储介质,所述计算机可读存储介质上存储计算机程序,所述计算机程序被处理器执行时实现上述媒体功能的交互方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。其中,所述的计算机可读存储介质,如只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等。
需要说明的是,在本文中,术语“包括”、“中包含”或者其任何其他变体意在涵盖非排他性的中包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (37)

  1. 一种IP多媒体子系统IMS网络的媒体功能的交互方法,包括:
    第一网元向第二网元发送用于查询目标媒体功能的媒体功能发现请求消息;
    所述第一网元接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息;
    所述第一网元从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,以提供所述目标媒体功能。
  2. 如权利要求1所述的方法,其中,所述媒体功能发现请求消息携带有以下信息中的至少一项:
    所述目标媒体功能的名称;
    所述目标媒体功能的类型;
    触发媒体功能发现请求的请求方的类型;
    目标媒体能力信息,所述目标媒体能力信息包括以下至少一种:编解码能力、放音能力、会议能力、数据通道媒体能力、拓扑隐藏能力。
  3. 如权利要求1所述的方法,其中,所述媒体功能发现请求响应消息携带有以下信息中的至少一种:
    所述候选媒体功能实例的类型;
    所述候选媒体功能实例的标识;
    所述候选媒体功能实例的地址,所述地址包括全限定域名FQDN地址和/或网际协议IP地址;
    所述候选媒体功能实例能够提供的媒体服务能力信息;
    所述候选媒体功能实例的匹配优先级;
    所述候选媒体功能实例的负载信息;
    所述候选媒体功能实例的位置信息。
  4. 如权利要求1至3任一项所述的方法,其中,所述第一网元从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,包括:
    所述第一网元根据所述媒体功能发现请求响应消息中携带的信息以及预配置的媒体功能选择机制,从所述至少一个候选媒体功能实例中选择目标媒体功能实例。
  5. 如权利要求4所述的方法,其中,所述从所述至少一个候选媒体功能实例中选择出目标媒体功能实例,包括以下至少一种:
    在所述至少一个候选媒体功能实例仅包括一个媒体功能实例的情况下,选择所述候选媒体功能实例作为目标媒体功能实例;
    在所述至少一个候选媒体功能实例包括至少两个媒体功能实例的情况下,根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例。
  6. 如权利要求5所述的方法,其中,所述根据预配置的媒体功能选择机制,选择出一个目标媒体功能实例,包括:
    在所述媒体功能选择机制为随机random机制时,基于random算法从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
    在所述媒体功能选择机制为优先级priority机制时,按照匹配优先级的高低顺序,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例;
    在所述媒体功能选择机制为本地化localized机制时,根据所述第一网元的选择机 制,从所述至少两个媒体功能实例中选择出一个目标媒体功能实例。
  7. 如权利要求6所述的方法,其中,所述第一网元的选择机制包括以下至少一种:
    根据用户终端的位置信息与媒体功能实例的位置信息进行选择;
    根据用户终端的编解码能力与媒体功能实例的编解码能力进行选择;
    根据媒体功能实例的负载信息进行选择。
  8. 如权利要求1所述的方法,其中,所述第一网元在接收到请求方发送的与媒体会话相关的请求的情况下,向第二网元发送所述媒体功能发现请求消息。
  9. 如权利要求8所述的方法,其中,所述与媒体会话相关的请求包括以下至少一种:
    需要建立IMS会话的呼叫请求;
    放音请求;
    会议请求;
    编解码协商请求;
    建立不同会话初始协议SIP网络会话;
    数据通道会话请求。
  10. 如权利要求1所述的方法,其中,还包括:
    第一网元向第二网元发送用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;
    所述第一网元接收所述网络第二网元发送的订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
  11. 如权利要求10所述的方法,其中,所述订阅请求消息还携带有期望订阅的媒体能力的指示信息。
  12. 如权利要求10所述的方法,其中,还包括:
    所述第一网元接收所述第二网元发送的媒体状态更新消息,所述媒体状态更新消息携带有所述第一媒体功能实例的状态更新信息。
  13. 如权利要求4所述的方法,其中,还包括:
    所述第一网元向目标第三网元发送媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源,所述目标第三网元为所述目标媒体功能实例所在的第三网元;
    所述第一网元接收所述目标第三网元返回的媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息;
    所述第一网元将所述目标媒体资源的相关信息发送给触发所述媒体功能发现请求消息的请求方。
  14. 如权利要求13所述的方法,其中,还包括:
    所述第一网元向目标第三网元发送媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;
    所述第一网元接收所述目标第三网元返回的媒体会话更新请求响应消息。
  15. 如权利要求13所述的方法,其中,还包括:
    所述第一网元向目标第三网元发送媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;
    所述第一网元接收所述目标第三网元返回的媒体会话移除请求响应消息。
  16. 如权利要求1所述的方法,其中,
    所述第一网元采用基于服务的接口SBI,与所述第二网元及媒体功能实例进行通 信。
  17. 一种IMS网络的媒体功能的交互方法,包括:
    第二网元接收第一网元发送的用于查询目标媒体功能的媒体功能发现请求消息;
    所述第二网元确定与所述目标媒体功能相匹配的至少一个候选媒体功能实例,向所述第一网元发送媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈所述至少一个候选媒体功能实例的信息。
  18. 如权利要求17所述的方法,其中,所述媒体功能发现请求消息携带有以下信息中的至少一种:
    所述目标媒体功能的名称;
    所述目标媒体功能的类型;
    触发媒体功能发现请求的请求方的类型;
    目标媒体能力信息,所述目标媒体能力信息包括以下至少一项:编解码能力、放音能力、会议能力、数据通道媒体能力、拓扑隐藏能力。
  19. 如权利要求17所述的方法,其中,所述媒体功能发现请求响应消息携带有以下信息中的至少一种:
    所述候选媒体功能实例的类型;
    所述候选媒体功能实例的标识;
    所述候选媒体功能实例的地址,所述地址包括FQDN地址和/或IP地址;
    所述候选媒体功能实例能够提供的媒体服务能力信息;
    所述候选媒体功能实例的匹配优先级;
    所述候选媒体功能实例的负载信息;
    所述候选媒体功能实例的位置信息。
  20. 如权利要求17所述的方法,其中,还包括:
    所述第二网元接收第三网元发送的媒体能力注册请求信息,所述媒体功能注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;
    所述第二网元根据所述媒体功能注册请求信息,保存所述媒体功能实例与媒体能力之间的对应关系,并向所述第三网元发送媒体功能注册请求响应信息。
  21. 如权利要求20所述的方法,其中,所述媒体能力注册请求信息携带有以下信息中的至少一种:媒体功能的类型、媒体功能实例的标识、媒体功能实例的地址、媒体功能实例能够提供的媒体服务能力信息。
  22. 如权利要求17所述的方法,其中,还包括:
    所述第二网元接收所述第一网元发送的用于订阅第一媒体功能实例的状态信息的订阅请求消息,所述订阅请求消息携带有所述第一媒体功能实例的状态信息的接收地址;
    所述第二网元向所述第一网元发送订阅请求响应消息,所述订阅请求响应消息用于指示是否成功订阅了所述第一媒体功能实例的状态信息。
  23. 如权利要求22所述的方法,其中,还包括:
    在所述第一媒体功能实例的状态发生更新的情况下,所述第二网元向所述第一网元发送媒体状态订阅消息,所述媒体状态订阅消息携带有所述第一媒体功能实例的状态更新信息。
  24. 如权利要求17所述的方法,其中,
    所述第二网元采用基于服务的接口SBI,与所述第一网元及媒体功能实例进行通信。
  25. 一种IMS网络的媒体功能的交互方法,包括:
    第三网元接收第一网元发送的媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源;
    所述媒体功能实例响应于所述媒体会话建立请求,向所述第一网元发送媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
  26. 如权利要求25所述的方法,其中,还包括:
    所述第三网元接收所述第一网元发送的媒体会话更新请求,所述媒体会话更新请求中携带有所述目标媒体资源的更新指示信息;
    所述媒体控制服务根据所述更新指示信息,进行目标媒体资源的更新,并在更新完成后,向第一网元发送媒体会话更新请求响应消息。
  27. 如权利要求25所述的方法,其中,还包括:
    所述第三网元接收所述第一网元发送的媒体会话移除请求,所述媒体会话移除请求包含有会话移除指示以及请求移除的媒体资源信息;
    所述媒体控制服务根据所述媒体会话移除请求,移除相应的媒体会话,释放相应的媒体资源,并向第一网元发送媒体会话移除请求响应消息。
  28. 如权利要求25所述的方法,其中,还包括:
    所述第三网元向第二网元发送媒体能力注注册请求信息,所述媒体能力注册请求信息用于注册所述第三网元的媒体功能实例的媒体能力;
    所述第三网元接收所述第二网元发送的媒体功能注册请求响应信息。
  29. 如权利要求25所述的方法,其中,
    多种媒体功能实例聚合于所述第三网元中,所述多种媒体功能实例包括以下至少一种:
    数据通道媒体功能实例;
    转换网关TrGW功能实例;
    IP多媒体网关IM-MGW功能实例;
    IMS接入网关IMS-AGW功能实例;
    媒体资源处理功能实例。
  30. 如权利要求25所述的方法,其中,
    所述第三网元采用基于服务的接口SBI,与所述第一网元及第二网元进行通信。
  31. 一种第一网元,包括处理器和收发机,其中:
    所述收发机,配置为向第二网元发送用于查询目标媒体功能的媒体功能发现请求消息;以及,接收所述第二网元发送的媒体功能发现请求响应消息,所述媒体功能发现请求响应消息用于反馈与所述目标媒体功能相匹配的至少一个候选媒体功能实例的信息;
    所述处理器,配置为从所述至少一个候选媒体功能实例中选择出一个目标媒体功能实例,以提供所述目标媒体功能。
  32. 一种第一网元,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如权利要求1至16任一项所述的方法的步骤。
  33. 一种第二网元,包括处理器和收发机,其中:
    所述收发机,配置为接收第一网元发送的用于查询目标媒体功能的媒体功能发现请求消息;
    所述处理器,配置为确定与所述目标媒体功能相匹配的至少一个候选媒体功能实例,向所述第一网元发送媒体功能发现请求响应消息,所述媒体功能发现请求响应消 息用于反馈所述至少一个候选媒体功能实例的信息。
  34. 一种第二网元,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如权利要求17至24任一项所述的方法的步骤。
  35. 一种第三网元,包括处理器和收发机,其中:
    所述收发机,配置为接收第一网元发送的媒体会话建立请求,所述媒体会话建立请求用于第一网元与第三网元之间协商建立目标媒体资源;
    所述处理器,配置为响应于所述媒体会话建立请求,向所述第一网元发送媒体会话建立请求响应消息,所述媒体会话建立请求响应消息携带有所述目标媒体资源的相关信息。
  36. 一种第三网元,包括:处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序,所述程序被所述处理器执行时实现如权利要求25至30任一项所述的方法的步骤。
  37. 一种计算机可读存储介质,所述计算机可读存储介质上存储有计算机程序,所述计算机程序被处理器执行时实现如权利要求1至30任一项所述的方法的步骤。
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