WO2024051627A1 - 一种通信建立方法、装置、终端设备及网络侧设备 - Google Patents

一种通信建立方法、装置、终端设备及网络侧设备 Download PDF

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Publication number
WO2024051627A1
WO2024051627A1 PCT/CN2023/116666 CN2023116666W WO2024051627A1 WO 2024051627 A1 WO2024051627 A1 WO 2024051627A1 CN 2023116666 W CN2023116666 W CN 2023116666W WO 2024051627 A1 WO2024051627 A1 WO 2024051627A1
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Prior art keywords
terminal device
data channel
request
network side
information
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PCT/CN2023/116666
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English (en)
French (fr)
Inventor
程思涵
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维沃移动通信有限公司
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Publication of WO2024051627A1 publication Critical patent/WO2024051627A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a communication establishment method, device, terminal equipment and network side equipment.
  • the 3GPP (3rd Generation Partnership Project) standard introduces a mechanism to establish a DC (Data Channel) during a call. Through the DC, additional services can be performed during the call, such as screen sharing. Location sharing, file transfer, etc., thus giving users a better experience.
  • DC Data Channel
  • the DC application can be dynamically downloaded to the terminal during the call. It does not require the terminal to be installed in advance, making it convenient for users to use.
  • DC application will be referred to as APP below.
  • both communicating parties enable an APP, they need to first dynamically download the APP from the DC Server (DC Server) and establish a corresponding application DC (application data channel) for the APP.
  • DC Server DC Server
  • application DC application data channel
  • Different APPs have different QoS (Quality of Service, Quality of Service) requirements. For example, AR applications require low latency and high throughput, screen sharing applications require good real-time performance, etc.
  • QoS Quality of Service
  • AR applications require low latency and high throughput
  • screen sharing applications require good real-time performance, etc.
  • each APP needs to establish its own corresponding application DC.
  • each UE can support different DC characteristics.
  • the DC characteristics are not supported at all, or only certain DC characteristics are supported.
  • it can be processed by network side equipment, such as DCMF (Data Channel Media Function).
  • DCMF Data Channel Media Function
  • UE-A supports the screen sharing feature, and UE-B does not support DC or does not support it. Screen sharing feature, at this time, UE-A can send UE-A's screen information to DCMF through DC, and DCMF plays it to UE-B in the form of video.
  • the application scenario is relatively limited and the user experience is poor.
  • UE-A and UE-B are required to establish a video call before using the DC service.
  • DCMF will share the screen through the video call channel between UE-B and UE-A.
  • the video stream is sent to UE-B. If there is no video call between UE-A and UE-B, the screen sharing feature cannot be used, affecting the user experience of UE-A.
  • Embodiments of the present application provide a communication establishment method, device, terminal equipment and network-side equipment, which can solve the problem that data channel applications cannot be used normally when two terminal equipments supporting a session have different DC capabilities.
  • a communication establishment method applied to a first terminal device, and the method includes:
  • the first terminal device sends a first request, the first request is used to establish a video call with the second terminal device;
  • the sending conditions of the first request include:
  • the first terminal device determines to trigger the target data channel application, and the second terminal device cannot use the target data channel application.
  • a communication establishment method applied to a first network side device, and the method includes:
  • the first network side device sends a third request to the second terminal device, the third request is used to establish a video streaming transmission connection between the second terminal device and the second network side device;
  • the sending conditions of the third request include at least one of the following:
  • the first network side device receives the first information sent by the third network side device, and the first information is used to indicate establishing a video streaming transmission connection between the second terminal device and the second network side device; Alternatively, the first information is used to indicate anchoring the video streaming connection of the second terminal device to the second network side device;
  • the first network side device receives a first request sent by the first terminal device, the first request is used to establish a data channel, and the data channel corresponds to a target data channel application.
  • an information generation method which method includes:
  • the second terminal device When receiving the first request, the second terminal device generates and displays prompt information
  • the first request is used to establish a video call between the first terminal device and the second terminal device, and the first request carries information for instructing only sending, and/or is used for instructing to play the video.
  • Information for instructing only sending, and/or is used for instructing to play the video.
  • the prompt information is used to remind the user to only receive video calls and not send video calls;
  • the prompt information is used to remind the user to play the video.
  • a communication establishment device applied to a first terminal device, and the method includes:
  • a first request sending module configured to send a first request, the first request being used to establish a video call with the second terminal device
  • the sending conditions of the first request include:
  • the first terminal device determines to trigger the target data channel application, and the second terminal device cannot use the target data channel application.
  • a communication establishment device applied to a first network side device, and the device includes:
  • a third request sending module configured to send a third request to the second terminal device, where the third request is used to establish a video stream transmission connection between the second terminal device and the second network side device;
  • the sending conditions of the third request include at least one of the following:
  • the first network side device receives the first information sent by the third network side device, the first information is used to indicate establishing a video streaming transmission connection between the second terminal device and the second network side device; or, The first information is used to indicate anchoring the video streaming connection of the second terminal device to the second network side device;
  • the first network side device receives a first request sent by the first terminal device, the first request is used to establish a data channel, and the data channel corresponds to a target data channel application.
  • a terminal device in a sixth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following is implemented: The steps of the communication establishment method of the first aspect or the information generation method of the third aspect.
  • a network side device including a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following is implemented: The steps of the communication establishment method described in the second aspect.
  • a communication establishment system including: a terminal device and a network side device.
  • the terminal device can be used to perform the steps of the communication establishment method as described in the first aspect.
  • the network side device can be used to perform The steps of the communication establishment method described in the second aspect above.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the communication establishment method as described in the first or second aspect is implemented. The steps, or the steps of implementing the information generation method as described in the third aspect.
  • a chip in a tenth aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the first aspect or the second aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the first aspect or the second aspect.
  • a transmission device/device which includes the device/device (configured to) perform steps to implement the communication establishment method as described in the first or second aspect, or The steps of implementing the information generation method as described in the third aspect.
  • the first terminal device when the first terminal device determines that the target data channel application is triggered and the second terminal device cannot use the target data channel application, it can send a first request to establish communication with the second terminal. video call of the device, so that when the second terminal device cannot use the target data channel application, the data of the target data channel application is transmitted to the second terminal device through the newly added video call, which is conducive to improving the DC business between the two terminal devices.
  • the usage success rate expands application scenarios and improves user experience.
  • Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic flow chart of establishing a data channel in related technologies
  • Figure 3 is a flow chart of a communication establishment method in an embodiment of the present application.
  • Figure 4 is a schematic flowchart of establishing a data channel in an embodiment of the present application.
  • Figure 5 is a schematic flowchart of another method of establishing a data channel in an embodiment of the present application.
  • Figure 6 is a flow chart of another communication establishment method in an embodiment of the present application.
  • Figure 7 is a schematic flowchart of another method of establishing a data channel in an embodiment of the present application.
  • Figure 8 is a structural block diagram of a communication establishment device in an embodiment of the present application.
  • Figure 9 is a structural block diagram of another communication establishment device in an embodiment of the present application.
  • Figure 10 is a structural block diagram of a communication device in an embodiment of the present application.
  • Figure 11 is a structural block diagram of a terminal device in an embodiment of the present application.
  • Figure 12 is a structural block diagram of a network side device in an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/” generally indicates that the related objects are in an "or” relationship.
  • instruction in the description and claims of this application can be either an explicit instruction or an implicit instruction.
  • explicit instructions can be understood as the sender clearly informs the receiver of the operations or request results that need to be performed in the instructions sent; implicit instructions can be understood as the receiver makes judgments based on the instructions sent by the sender, and based on the judgment The result determines the action that needs to be performed or the result of the request.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal device 11 and a network side device 12.
  • the terminal device 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC Ultra-mobile personal computer
  • UMPC mobile Internet device
  • Mobile Internet Device MID
  • augmented reality augmented reality
  • VR virtual reality
  • robots wearable devices
  • VUE vehicle-mounted equipment
  • PUE pedestrian terminals
  • smart home home equipment with wireless communication functions, such as Terminal devices such as refrigerators, TVs, washing machines or furniture, etc.
  • PCs personal computers
  • teller machines or self-service machines include: smart watches, smart bracelets, smart headphones, smart glasses, Smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the terminal equipment 11 may also be a chip within the terminal, such as a modem chip or a system on chip (SoC). It should be noted that the embodiment of the present application does not limit the specific type of the terminal device 11.
  • the network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless access network unit.
  • Access network equipment may include base stations, WLAN access points or WiFi nodes, etc.
  • the base stations may be called Node B, Evolved Node B (eNB), Access Point, Base Transceiver Station (BTS), Radio Base Station , radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home B-Node, Home Evolved B-Node, Transmitting Receiving Point (TRP) or the above
  • eNB Evolved Node B
  • BTS Base Transceiver Station
  • ESS Extended Service Set
  • Home B-Node Home Evolved B-Node
  • TRP Transmitting Receiving Point
  • the core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), application function (Application Function, AF), etc.
  • MME mobility management entity
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • DC can be divided into two types: Bootstrap DC (initialization data channel) and Application DC (application data channel).
  • Bootstrap DC is the data channel between the terminal device and the DC server, used for downloading APP.
  • Application DC is a data channel between terminal devices or between terminal devices and DC servers, used to transmit data corresponding to APPs.
  • a Bootstrap DC is first established and the APP is downloaded, and then the Application DC corresponding to the APP is established based on the needs of the APP, such as QoS requirements.
  • UE-A is a DCMTSI (DataChannel Multimedia Telephony Service for IMS) terminal, that is, UE-A supports DC's IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) multimedia phone service
  • UE-B is an MTSI (Multimedia Telephony Service for IMS, IMS multimedia telephony service) terminal, that is, UE-B supports IMS multimedia telephony service.
  • IMS IP Multimedia Subsystem
  • MTSI Multimedia Telephony Service for IMS, IMS multimedia telephony service
  • UE-A needs to use an APP during a call, it establishes the Application DC corresponding to the APP.
  • the specific establishment process is as follows:
  • UE-A initiates a SIP re-INTITE request to UE-B.
  • This request is used to establish an Application DC.
  • the two Application DCs include a first data channel and a second data channel.
  • the stream ID of the first data channel can be 1000.
  • RTP Real-time Transport Protocol, Real-time Transport Protocol
  • the stream identifier of the second data channel can be 1001, RTCP (RTP Control Protocol, RTP Control Protocol) used to transmit video stream data )data pack.
  • the flow ID is used to identify the data channel. Normally, 0-999 is used to identify the Bootstrap DC, and the flow ID greater than or equal to 1000 is used to identify the Application DC.
  • AS Application Server, application server
  • AS sends a Media Event Report to DCSF (Data Channel Signaling Function) based on the Application DC-related content contained in the received SIP re-INTITE request.
  • this media event report is used to request the establishment of Application DC, including relevant content of the two Application DCs requested by UE-A.
  • AS and DCSF are both network-side devices of the network where UE-A is located.
  • the AS may be the MMTel AS (Multi Media Telephony Application Server, MMTel Application Server) shown in Figure 2, or it may be other AS, such as TAS (Telephony Application Server, Telephone Application Server), which is not limited in this application.
  • DCSF generates policy information, which is used to indicate the policy for establishing the DC. For example, DCSF can determine whether UE-B supports the data channel, determine whether the network where UE-B is located supports the data channel, and determine whether UE-B supports the requested Application based on the information of the APP corresponding to the Application DC requested to be established. DC corresponding APP. If UE-B meets the first condition, DCSF generates first policy information, which is used to instruct the establishment of a data channel between UE-A and DCMF (Data Channel Media Function, Data Channel Media Function), and uses Instructs to anchor the video stream (video media streams or video streams) transmission connection of UE-B to DCMF.
  • DCMF Data Channel Media Function, Data Channel Media Function
  • the first condition may include at least one of the following: UE-B does not support the data channel; the network where UE-B is located does not support the data channel; UE-B does not support the APP corresponding to the Application DC requested to be established. It can be understood that if UE-B does not meet the first condition, that is, UE-B supports the data channel, the network where UE-B is located supports the data channel, and UE-B supports the APP corresponding to the Application DC requested to be established, DSCF generates Second policy information, the second policy information is used to indicate the establishment of UE-A and UE-B data channel between UE-A and UE-B, thereby directly transmitting APP data through the data channel between UE-A and UE-B.
  • DCSF sends policy information, namely DC Control, to AS.
  • the policy information may be the first policy information or the second policy information.
  • AS sends Media Resource Management information to DCMF.
  • the media resource management information is used to request the allocation of DCMF resources.
  • the DCMF resources requested to be allocated are used to establish a data channel between UE-A and DCMF, and are also used to establish a video stream connection between DCMF and UE-B.
  • the condition for the AS to send the media resource management information to the DCMF is: the AS receives the first policy information sent by the DCSF. If the AS receives the second policy information sent by the DCSF, it can directly trigger the establishment of a data channel between UE-A and UE-B without requesting the allocation of DCMF resources.
  • AS sends a SIP re-INVITE request to UE-B.
  • the SIP re-INVITE request is used to establish the application data channel corresponding to the APP.
  • the SIP re-INVITE request contains the first request information to set the peer of UE-B's video streaming connection to DCMF.
  • the first request information includes the IP address and port number of DCMF, which is used to trigger UE-B to establish a video streaming connection with DCMF.
  • the video streaming connection includes an RTP connection.
  • the first request information may be Session Description Protocol request (Session Description Protocol offer, SDP offer) information, that is, the SDP offer of anchoring video in Figure 2 is included in the SDP offer.
  • DCMF Session Description Protocol request
  • the SIP re-INVITE request contains second request information for establishing a data channel between UE-A and UE-B, and the second request contains The IP address and port number of UE-A are used to trigger the data channel between UE-B and UE-A.
  • the SIP re-INVITE request sent by AS to UE-B is sent to UE-B through the IMS Core (IMS core network) that provides services for UE-B.
  • the second request information may be SDP offer information, that is, the SDP offer of anchoring video in Figure 2.
  • the SDP offer includes the IP address and port number of UE-A.
  • the response message may include Session Description Protocol answer (SDP answer) SDP answer information, that is, the Session Description Protocol answer of anchoring video (SDP answer of anchoring video) in Figure 2.
  • SDP answer Session Description Protocol answer
  • the SDP answer message contains the IP address and port number of UE-B.
  • the confirmation message can be an ACK message (ACK for re-INVITE).
  • the AS sends a response message to UE-A according to the response message sent by UE-B.
  • the response message can also be a 200OK message (200OK for re-INVITE), which is used to notify UE-A that the data channel is successfully established.
  • the confirmation message can also be an ACK message (ACK for re-INVITE).
  • UE-A When UE-A needs to use the APP during a call with UE-B, if at least one of the following situations exists: UE-B does not support the data channel; the network where UE-B is located does not support the data channel; UE-B does not support the data channel.
  • APP used by UE-A Through the above process, the data channel between UE-A and DCMF is established, and the data channel between UE-B and DCMF is established.
  • the APP in UE-A can send the APP data to DCMF through the established data channel, and DCMF will send the APP data to UE-B through the video streaming connection with UE-B.
  • two terminal devices trigger the DC application after establishing a video call, which results in limited application scenarios and poor user experience.
  • UE-A and UE-B are required to establish a video call before using the DC service, that is, before using the APP.
  • DCMF will use the video call channel between UE-B and UE-A.
  • the video stream data of APP is sent to UE-B. If there is no video call between UE-A and UE-B, the APP cannot be used, which affects the user experience of UE-A; if there is a video call between UE-A and UE-B, UE-A sends the APP's message to UE-B.
  • the user of UE-B cannot see the video of the user of UE-A, which affects the experience of the UE-B user.
  • this application provides a communication establishment method, which can establish a communication connection between the first terminal device and the second terminal device when the second terminal does not support the DC service, thereby improving the DC between the two terminal devices.
  • Business usage success rate
  • FIG. 3 a flow chart of a communication establishment method provided by an embodiment of the present application is shown.
  • the method is applied to the first terminal device, as shown in Figure 3.
  • the method may specifically include:
  • Step 301 The first terminal device sends a first request, where the first request is used to establish a video call with the second terminal device.
  • the sending conditions of the first request include:
  • the first terminal device determines to trigger the target data channel application, and the second terminal device cannot use the target data channel application.
  • the first terminal device and the second terminal device may be the terminal device 11 in FIG. 1 .
  • the terminal device 11 For description of the terminal device 11 , reference may be made to the relevant descriptions above, and details will not be described again here.
  • the call has been established between the first terminal device and the second terminal device.
  • the call may be a voice call and/or a video call, and is mainly used to implement conventional call services.
  • the first terminal device When it is determined that the target data channel application is triggered, and it is determined that the second terminal device cannot use the target data channel application, the first terminal device sends a first request, and the first request is used to establish a video connection with the second terminal device.
  • the video call is mainly used to implement DC services, such as transmitting data of the APP used in the first terminal device.
  • the first terminal device may determine to trigger the target data channel application.
  • the triggering operation may include but is not limited to: the user's click operation on the target data channel application icon displayed in the display interface of the second terminal device, the user's click operation on a certain function control of the target data channel application, the user's click operation on the target data channel application. Voice activation commands issued by the app, etc.
  • the first terminal device can receive the user's trigger operation after establishing an IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) session with the second terminal device.
  • IMS IP Multimedia Subsystem, IP Multimedia Subsystem
  • the IMS session may include a voice session and/or a video session.
  • the target data channel application is a data channel application selected or used by the user, and the target data channel application Can include but are not limited to: screen sharing applications, AR rendering applications, and video special effects applications.
  • the first terminal device detects the user's usage operation for the target data channel application. For example, the first terminal device detects the user's usage operation for any data channel application in the application list. Select the operation and/or download operation to determine the data channel application as the target data channel application.
  • the application list contains attribute information of each data channel application.
  • the attribute information includes but is not limited to: data channel characteristics required by the data channel application, terminal equipment that supports the data channel application, and whether the network side device supports the data channel application. The data is transformed, etc.
  • the first terminal device determines that the second terminal device cannot use the target data channel application.
  • the preset conditions include at least one of the following:
  • the second terminal device does not support data channels
  • the network where the second terminal device is located does not support data channels
  • the second terminal device does not support the target data channel application.
  • the first terminal device can use the attribute information of the target data channel application in the application list and the related information of the second terminal device, such as the data channel characteristics supported by the second terminal device, the network where the second terminal device is located supports Data channel characteristics, etc., to determine whether the second terminal device meets the preset conditions. If the second terminal device meets the preset conditions, it can be determined that the second terminal device cannot use the target data channel application.
  • FIG. 4 a schematic flowchart of establishing a data channel according to an embodiment of the present application is shown.
  • the first terminal device determines that the second terminal device meets the preset conditions, it sends a first request to the AS, where the first request is used to establish a video call with the second terminal device.
  • AS is the first network side device in the embodiment of this application.
  • the first request carries session description information of the new video call.
  • the description information of the video call established by the request can be added on the basis of the historical session description information carried in the first request.
  • the description information can include the m line and the a line of the video call, where the m line is used to specify the call.
  • the type of multimedia information flow is video call, port number for sending video call, transmission protocol, encoding format and other information.
  • Line a is used to describe other properties of the video call.
  • the session description information can be an SDP offer.
  • the first request carries information for instructing only sending; and/or information for instructing to play the video.
  • the attribute information of the video call may be carried in the a line of the session description information of the newly added video call, which may specifically include information for instructing only sending; and/or information for instructing to play the video.
  • the information used to indicate sending only is used to notify the second terminal device that it only needs to receive video calls without sending video calls.
  • the information used to indicate sending only can be "send only" information.
  • the information used to instruct the video to be played is used to notify the second terminal device to play the video stream data of the video call.
  • the first terminal device can notify the second terminal device to only receive the video call, and/or play the video stream data of the video call, which can effectively avoid holding the second terminal device.
  • the user rejects the first request sent by the first terminal device because he does not want to send a video call, which is beneficial to improving video calls. establishment success rate.
  • the method also includes:
  • the first terminal device determines that the video call is successfully established, it initiates a second request.
  • the second request is used to establish a data channel, and the data channel corresponds to the target data channel application.
  • the first terminal when the first terminal receives the 200 OK response message, it is determined that the video call is successfully established; or when the first terminal receives the SDP answer, it is determined that the video call is successfully established.
  • the second request may be a SIP re-INTITE request for establishing a data channel.
  • the second request carries instruction information to establish two Application DCs.
  • the two Application DCs include a first data channel and a second data channel, where the stream ID of the first data channel can be 1000, RTP (Real-time Transport Protocol, Real-time Transport Protocol) data packets used to transmit video stream data; the stream identifier of the second data channel can be 1001, RTCP (RTP Control Protocol, RTP Control Protocol) used to transmit video stream data data pack.
  • the second request is initiated, including:
  • the first response message carries description information used to instruct the second terminal device to accept the video call.
  • the first terminal device may determine whether the video call is successfully established based on receiving a first response message from the second terminal device in response to the first request. Specifically, if the first response message received by the first terminal device carries description information indicating that the video call is successfully established, it may be determined that the video call is successfully established. On the contrary, if the response message received by the first terminal device carries description information indicating that the video call establishment fails, it may be determined that the video call establishment fails.
  • the response message usually carries session description information, and the session description information may be SDP answer.
  • the description information used to indicate the successful establishment of the video call may be that the port number in line m in the session description corresponding to the new video call remains unchanged; the description information used to indicate the failure to establish the video call may be the session description corresponding to the new video call.
  • the port number in line m in the information is set to 0.
  • the first request is also used to establish a data channel, and the data channel corresponds to the target data channel application.
  • the correspondence between the data channel and the target data channel application can be understood as: the data channel is used to transmit data of the target data channel application, or the data channel is for using the target data channel application. Built specifically for communication.
  • the first terminal device when it determines to trigger the target data channel application and determines that the second terminal device cannot use the target data channel application, it can send a message for establishing the communication with the third terminal device.
  • the first terminal device may also initiate a video call for establishing a video call with the second terminal device and a data channel establishment when it is determined that the target data channel application is triggered and the second terminal device is unable to use the target data channel application.
  • First request when the first terminal device determines to trigger the target data channel application and determines that the second terminal device cannot use the target data channel application, it can send a message for establishing the communication with the third terminal device.
  • the first terminal device may also initiate a
  • FIG. 5 another schematic flowchart of establishing a data channel according to the present application is shown.
  • the first request may be SIP re -INTITE request.
  • the first request carries session description information for the new video call, and also carries instruction information for establishing two Application DCs.
  • These two Application DCs include a first data channel and a second data channel, where the first
  • the stream ID of the data channel can be 1000, which is used to transmit RTP (Real-time Transport Protocol) packets of video stream data; the stream ID of the second data channel can be 1001, which is used to transmit video.
  • RTCP RTP Control Protocol, RTP control protocol
  • the sending conditions of the first request also include:
  • the second network side device supports interworking processing of the target data channel application.
  • the second network side device is DCMF.
  • the second network side device supports interoperability processing of the target data channel application, including:
  • the second network side device supports converting the data of the target data channel application sent by the first terminal device through the data channel into video stream data and sends it to the second terminal device.
  • the video stream data is usually a video stream data packet that complies with the RTP protocol.
  • the sending conditions of the first request also include:
  • the first terminal device supports interoperability processing of the target data channel application.
  • the first terminal device supports interoperability processing of the target data channel application, including:
  • the first terminal device supports sending data of the target data channel application to the second network side device through the data channel.
  • the sending condition of the first request may also include A2.
  • the sending condition may also include A1, A2, and A3.
  • the second network side device supports different ways of interoperating with the target data channel application.
  • the first terminal device does not support interoperability processing of the target data channel application, and the first terminal device directly sends the data of the target data channel application to the second network side through the data channel. equipment.
  • the second network side device can encapsulate the received data of the target data channel application into a data packet of the RTP protocol, and then send the encapsulated data packet to the second terminal device, thereby realizing the target data Interop handling of channel applications.
  • the first terminal device supports interoperability processing of the target data channel application. Specifically, the first terminal device can first encapsulate the data of the target data channel application into RTP. The data packet of the protocol is then encapsulated into the data channel and sent to the second network side device. In this application scenario, after receiving the encapsulated DC data packet, the second network side device can directly remove the header of the DC data packet and send the RTP data packet in the DC data packet to the second terminal device, thereby realizing Interoperability processing of target data channel applications.
  • the method further includes:
  • the first terminal device receives a second response message, where the second response message carries description information indicating that the data channel is successfully established.
  • the method further includes:
  • the first terminal device receives a third response message, where the third response message carries description information indicating failure to establish the data channel.
  • the first network side device AS will send a response message, that is, 200OK for re-INVITE, to the first terminal device UE-A, see step 9 in Figure 5.
  • the response message includes two situations: a second response message used to indicate the success of the data channel establishment, or a third response message used to indicate the failure of the data channel establishment.
  • the first network side device determines that the second terminal device accepts the video call; and/or, the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device is established.
  • the first terminal device will receive a second response message, where the second response message carries description information indicating that the data channel is successfully established. For example, the session description information carried in the second response message still carries row a of the data channel corresponding to the target data channel application.
  • the first network side device determines that the second terminal device rejects the video call; and/or, the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device If the establishment fails, the first terminal device will receive a third response message, where the third response message carries description information indicating that the data channel establishment fails. For example, the session description information carried in the third response message does not carry the a line corresponding to the target data channel application.
  • all data channel applications of the terminal device share a common m line in the session description information. If the port number of the m line is set to 0, it means that the terminal device does not support data channels. Each APP in the data channel corresponds to an a line. If the third response message received by the first terminal device does not carry the a line corresponding to the target data channel application, it means that the second terminal device rejects the target data channel application.
  • instruction in the description and claims of this application can be either an explicit instruction or an implicit instruction.
  • the a line that does not carry the data channel corresponding to the target data channel application can be understood as an implicit indication, that is, the second terminal device is instructed to refuse to establish the target data channel application through the a line that does not carry the data channel corresponding to the target data channel application. The corresponding data channel.
  • the first terminal device needs to determine whether the data channel is successfully established based on the session description information carried in the response message.
  • the first terminal device when the first terminal device determines that the target data channel application is triggered and the second terminal device cannot use the target data channel application, it can send a first request to establish the communication with The video call of the second terminal device, so that when the second terminal device cannot use the target data channel application, the data of the target data channel application is transmitted to the second terminal device through the newly added video call, which is beneficial to improving the communication between the two terminal devices. Success rate of using DC services.
  • FIG. 6 a flow chart of another communication establishment method provided by an embodiment of the present application is shown.
  • the method is applied to the first network side device, as shown in Figure 6.
  • the method may specifically include:
  • Step 601 The first network side device sends a third request to the second terminal device, where the third request is used to establish a video streaming transmission connection between the second terminal device and the second network side device;
  • the sending conditions of the third request include at least one of the following:
  • the first network side device receives the first information sent by the third network side device.
  • the first information is used to instruct the establishment of video streaming transmission between the second terminal device and the second network side device. connection; or, the first information is used to indicate anchoring the video streaming connection of the second terminal device to the second network side device;
  • the first network side device receives the first request sent by the first terminal device.
  • the first request is used to establish a data channel, and the data channel corresponds to the target data channel application.
  • the first network side device, the second network side device and the third network side device may be core network devices in Figure 1.
  • the first network side device may For MMTel AS
  • the second network side device may be DCMF
  • the third network side device may be DCSF.
  • the first information is generated by the third network side device when it is determined that the second terminal device cannot use the target data channel application.
  • preset conditions include at least one of the following:
  • the second terminal device does not support data channels
  • the network where the second terminal device is located does not support data channels
  • the second terminal device does not support the target data channel application.
  • the conditions for generating the first information include, in addition to determining that the second terminal device cannot use the target data channel application, also include: determining that the second network side device supports interoperability with the target data channel application. deal with.
  • the conditions for generating the first information also include: the first terminal device supports interoperability processing of the target data channel application.
  • FIG. 7 another schematic flowchart of establishing a data channel according to the present application is shown.
  • steps 1-5 in Figure 7 are the same as steps 1-5 in Figure 2.
  • the first request may be a SIP re-INTITE request for establishing a data channel.
  • DCSF can determine whether UE-B supports the data channel, determine whether the network where UE-B is located supports the data channel, and determine based on the information of the target data channel application corresponding to the requested data channel. Whether UE-B supports the target data channel application.
  • the first information is generated.
  • the first information is used to indicate the establishment of video streaming between the second terminal device and the second network side device. input connection.
  • the first request sent by the first terminal device is used to establish a video call with the second terminal device.
  • DCSF may also generate the first information when it is determined that UE-B meets at least one of the above preset conditions C1-C3.
  • the first information is used to indicate anchoring the video streaming connection of the second terminal device to the second network side device.
  • anchoring the video streaming connection of the second terminal device to the second network side device includes: setting the opposite end of the video streaming connection of the second terminal device to the Second network side device.
  • the first request is also used to establish a video call between the first terminal device and the second terminal device.
  • the first request is used to establish a data channel and is also used to establish a video call between the first terminal device and the second terminal device.
  • DCSF may also generate the first information when it is determined that UE-B meets at least one of the above preset conditions C1-C3. The first information is used to indicate establishing a video streaming connection between the second terminal device and the second network side device.
  • the first network side device in the data channel establishment process shown in any one of Figures 4, 5, and 7, will send a third request to the second terminal device to establish the connection between the second terminal device and the third terminal device.
  • the first request sent by the first terminal device is different, and the first information generated by the third network side device is also different.
  • the first request carries information for instructing only sending; and/or information for instructing to play the video.
  • the first request sent by the first terminal device can be used to establish a video call with the second terminal device. Therefore, in the establishment of these two data channels
  • the first request may include attribute information of the video call, and the attribute information may specifically include information for instructing to send only; and/or information for instructing to play the video.
  • the above attribute information can be carried in line a of the session description information of the newly added video call.
  • the information used to indicate sending only in the attribute information is used to notify the second terminal device that it only needs to receive video calls and does not need to send video calls.
  • the information used to indicate sending only can be "send only" information.
  • the information used to instruct the video to be played in the attribute information is used to notify the second terminal device to play the video stream data of the video call.
  • the third request includes request information for adding a video streaming connection corresponding to the second terminal device.
  • the third request sent by the first network side device includes request information for adding a video stream transmission connection corresponding to the second terminal device, which is used to newly establish the third request.
  • the request information may be an SDP offer, that is, the SDP offer of video in Figure 5 or Figure 7.
  • the request information includes the IP address and port number of the second network side device, and is sent to the third network side device through the third request.
  • the second terminal device enables the second terminal device to establish a video streaming connection with the second network side device.
  • the video streaming connection may be an RTP connection.
  • the third request includes request information for anchoring the video stream transmission connection of the second terminal device to the second network side device. Specifically, it may include requesting that the video streaming connection of the second terminal device be anchored to the second network side device. The opposite end of the video streaming connection is set to the request information of the second network side device. Similarly, the request information may include the IP address and port number of the second network side device, so that the second terminal device changes the peer end of the video transmission connection from the first terminal device to the second network side device.
  • the method also includes:
  • the first network side device sends a second response message to the first terminal device, where the second response message carries description information indicating that the data channel is successfully established;
  • the sending conditions of the second response message include at least one of the following:
  • the first network side device determines that the second terminal device accepts the video call
  • the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device is established.
  • the method also includes:
  • the first network side device sends a third response message to the first terminal device, where the third response message carries description information indicating failure to establish the data channel;
  • the sending conditions of the third response message include at least one of the following:
  • the first network side device determines that the second terminal device rejects the video call
  • the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device fails to be established.
  • the first network side device AS will send a response message to the first terminal device UE-A, that is, 200OK for re-INVITE, see Figure 5 or Figure 7 Step 9.
  • the response message includes two situations: a second response message used to indicate the success of the data channel establishment, or a third response message used to indicate the failure of the data channel establishment.
  • the first network side device determines that the second terminal device accepts the video call; and/or, the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device is established.
  • the first network side device will send a second response message to the first terminal device, where the second response message carries description information indicating that the data channel is successfully established. For example, the session description information carried in the second response message still carries row a of the data channel corresponding to the target data channel application.
  • the first network side device determines that the second terminal device rejects the video call; and/or, the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device If the establishment fails, the first network side device will send a third response message to the first terminal device, where the third response message carries description information indicating that the data channel establishment fails. For example, the session description information carried in the third response message does not carry the a line corresponding to the target data channel application.
  • the first network side device can send a third request to establish a video stream transmission connection between the second terminal device and the second network side device when the sending conditions are met, so that the third network side device can
  • the second network side device sends the video stream data of the target data channel application forwarded by the first terminal device through the data channel to the second terminal device through the video stream transmission connection with the second terminal device, which is beneficial to improving the communication between the two terminal devices.
  • the success rate of using DC services can be used to send a third request to establish a video stream transmission connection between the second terminal device and the second network side device when the sending conditions are met.
  • the second network side device sends the video stream data of the target data channel application forwarded by the first terminal device through the data channel to the second terminal device through the video stream transmission connection with the second terminal device, which is beneficial to improving the communication between the two terminal devices.
  • the success rate of using DC services is beneficial to improving the communication between the two terminal devices.
  • the execution subject may be a communication establishment device.
  • the communication establishment apparatus provided by the embodiment of the present application is described by taking the communication establishment apparatus executing the communication establishment method of the first aspect or the second aspect as an example.
  • embodiments of the present application provide an information generation method, which method is applied to the second terminal device and may specifically include:
  • the second terminal device When receiving the first request, the second terminal device generates prompt information and displays it.
  • the first request is used to establish a video call between the first terminal device and the second terminal device, and the first request carries information for instructing only sending, and/or is used for instructing to play the video. Information.
  • the prompt information is used to remind the user to only receive video calls and not send video calls;
  • the prompt information is used to remind the user to play the video stream data of the video call.
  • the second terminal device When receiving the first request to establish a video call between the first terminal device and the second terminal device, the second terminal device generates prompt information to remind the user to only receive the video call and not send the video call, and/or play
  • the video stream data of the video call can effectively prevent the user holding the second terminal device from rejecting the first request sent by the first terminal device because he does not want to send a video call, which is beneficial to improving the success rate of establishing a video call.
  • embodiments of the present application provide a communication establishment device, which can be applied to a first terminal device.
  • a structural block diagram of a communication establishment device provided by an embodiment of the present application is shown.
  • the device 80 may specifically include:
  • the first request sending module 801 is used to send a first request, the first request is used to establish a video call with the second terminal device;
  • the sending conditions of the first request include:
  • the first terminal device determines to trigger the target data channel application, and the second terminal device cannot use the target data channel application.
  • the device also includes:
  • the second request sending module is configured to send a second request when it is determined that the video call is successfully established.
  • the second request is used to establish a data channel, and the data channel corresponds to the target data channel application.
  • the first request is also used to establish a data channel, and the data channel corresponds to the target data channel application.
  • the first terminal device determines that the second terminal device cannot use the target data channel application, and the preset conditions include at least one of the following:
  • the second terminal device does not support data channels
  • the network where the second terminal device is located does not support data channels
  • the second terminal device does not support the target data channel application.
  • the first request carries information for instructing only sending; and/or information for instructing to play the video.
  • the sending conditions of the first request also include:
  • the second network side device supports interoperability processing of the target data channel application.
  • the sending conditions of the first request also include:
  • the first terminal device supports interoperability processing of the target data channel application.
  • the second network side device supports interoperability processing of the target data channel application, including:
  • the second network side device supports converting the data of the target data channel application sent by the first terminal device through the data channel into video stream data and sends it to the second terminal device.
  • the first terminal device supports interoperability processing of the target data channel application, including:
  • the first terminal device supports sending data of the target data channel application to the second network side device through the data channel.
  • the second request sending module includes:
  • the second request sending submodule is used to send the second request when receiving the first response message
  • the first response message carries description information used to instruct the second terminal device to accept the video call.
  • the device also includes:
  • a second response message receiving module is configured to receive a second response message, where the second response message carries description information indicating that the data channel is successfully established.
  • the device also includes:
  • a third response message receiving module is configured to receive a third response message, where the third response message carries description information indicating failure to establish the data channel.
  • embodiments of the present application provide another communication establishment device, which can be applied to the first network side device.
  • a structural block diagram of a communication establishment device provided by an embodiment of the present application is shown.
  • the device 90 may specifically include:
  • the third request sending module 901 is configured to send a third request to the second terminal device, where the third request is used to establish a video stream transmission connection between the second terminal device and the second network side device;
  • the sending conditions of the third request include at least one of the following:
  • the first network side device receives the first information sent by the third network side device, the first information is used to indicate establishing a video streaming transmission connection between the second terminal device and the second network side device; or, The first information is used to indicate anchoring the video streaming connection of the second terminal device to the second network side device;
  • the first network side device receives a first request sent by the first terminal device, the first request is used to establish a data channel, and the data channel corresponds to a target data channel application.
  • the first request is also used to establish a video call between the first terminal device and the second terminal device.
  • the first request carries information for instructing only sending; and/or information for instructing to play the video.
  • the third request includes request information for adding a video streaming connection corresponding to the second terminal device.
  • the first information is used to indicate anchoring the video streaming connection of the second terminal device to the second network side device, including:
  • the first information is used to indicate that the opposite end of the video streaming connection of the second terminal device is set as the second network side device.
  • the device also includes:
  • a second response message sending module configured to send a second response message to the first terminal device, where the second response message carries description information indicating that the data channel is successfully established;
  • the sending conditions of the second response message include at least one of the following:
  • the first network side device determines that the second terminal device accepts the video call
  • the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device is established.
  • the device also includes:
  • a third response message sending module configured to send a third response message to the first terminal device, where the third response message carries description information indicating failure to establish the data channel;
  • the sending conditions of the third response message include at least one of the following:
  • the first network side device determines that the second terminal device rejects the video call
  • the first network side device determines that the video streaming transmission connection between the second terminal device and the second network side device fails to be established.
  • the first network side device includes an application server in the network where the first terminal device is located.
  • the second network side device includes a data channel media function in the network where the first terminal device is located.
  • the third network side device includes a data channel signaling function in the network where the first terminal device is located.
  • the communication establishment device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • the terminal may include but is not limited to the types of terminal devices 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • NAS Network Attached Storage
  • the communication establishment device provided by the embodiment of the present application can implement each process implemented by the method embodiments of Figures 3 and 6. process and achieve the same technical effect. To avoid repetition, we will not repeat it here.
  • this embodiment of the present application also provides a communication device 1000, which includes a processor 1001 and a memory 1002.
  • the memory 1002 stores programs or instructions that can be run on the processor 1001, such as , when the communication device 1000 is a terminal device, when the program or instruction is executed by the processor 1001, each step of the communication establishment method embodiment described in the first aspect is implemented, and the same technical effect can be achieved.
  • the communication device 1000 is a network-side device, when the program or instruction is executed by the processor 1001, each step of the communication establishment method embodiment described in the second aspect is implemented, and the same technical effect can be achieved. To avoid duplication, here No longer.
  • This embodiment of the present application also provides a terminal device, as shown in Figure 11, which is a structural block diagram of a terminal device that implements the embodiment of the present application.
  • the terminal device 1100 includes but is not limited to: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, processor 1110, etc. at least some parts of it.
  • the terminal device 1100 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 1110 through a power management system, thereby managing charging, discharging, and function through the power management system. Consumption management and other functions.
  • the structure of the terminal device shown in Figure 11 does not constitute a limitation on the terminal device.
  • the terminal device may include more or fewer components than shown in the figure, or combine certain components, or arrange different components, which will not be described again here. .
  • the input unit 1104 may include a graphics processing unit (Graphics Processing Unit, GPU) 11041 and a microphone 11042.
  • the graphics processor 11041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072 .
  • Touch panel 11 071 also known as touch screen.
  • the touch panel 11071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 11072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 1101 after receiving downlink data from the network side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network side device.
  • the radio frequency unit 1101 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 1109 may be used to store software programs or instructions as well as various data.
  • the memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 1109 may include volatile memory or nonvolatile memory, or memory 1109 may include both volatile and nonvolatile memory.
  • the non-volatile memory can be a read-only memory (Read-Onl12Memor12, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable memory.
  • Read-Onl12Memor12 ROM
  • PROM programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM erasable programmable read-only memory
  • electrically erasable memory In addition to programmable read-only memory (Electricall12EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memor12, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (D12namic RAM, DRAM), synchronous dynamic random access memory (S12nchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (S12nch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • Memory 1109 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
  • the processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 1110.
  • the radio frequency unit 1101 when the processor determines that the sending condition is met, the radio frequency unit 1101 is configured to send a first request, and the first request is used to establish a video call with the second terminal device;
  • the sending conditions of the first request include:
  • the first terminal device determines to trigger the target data channel application, and the second terminal device cannot use the target data channel application.
  • the radio frequency unit 1101 is configured to send a second request, where the second request is used to establish a data channel, and the data channel corresponds to the target data channel application.
  • the first request is also used to establish a data channel, and the data channel corresponds to the target data channel application.
  • the processor determines that the second terminal device cannot use the target data channel application, and the preset conditions include at least one of the following:
  • the second terminal device does not support data channels
  • the network where the second terminal device is located does not support data channels
  • the second terminal device does not support the target data channel application.
  • the first request carries information for instructing only sending; and/or information for instructing to play the video.
  • the sending conditions of the first request also include:
  • the second network side device supports interoperability processing of the target data channel application.
  • the sending conditions of the first request also include:
  • the first terminal device supports interoperability processing of the target data channel application.
  • the second network side device supports interoperability processing of the target data channel application, including:
  • the second network side device supports converting the data of the target data channel application sent by the first terminal device through the data channel into video stream data and sends it to the second terminal device.
  • the first terminal device supports interoperability processing of the target data channel application, including:
  • the first terminal device supports sending data of the target data channel application to the second network side device through the data channel.
  • the radio frequency unit 1101 sends a second request, specifically for:
  • the first response message carries description information used to instruct the second terminal device to accept the video call.
  • the radio frequency unit 1101 is also configured to receive a second response message, where the second response message carries description information indicating that the data channel is successfully established.
  • the radio frequency unit 1101 is also configured to receive a third response message, where the third response message carries description information indicating failure to establish the data channel.
  • the processor determines that the data channel application is the target data channel application.
  • the network side device 1200 includes: an antenna 121, a radio frequency device 122, a baseband device 123, a processor 124, and a memory 125.
  • the antenna 121 is connected to the radio frequency device 122 .
  • the radio frequency device 122 receives information through the antenna 121 and sends the received information to the baseband device 123 for processing.
  • the baseband device 123 processes the information to be sent and sends it to the radio frequency device 122.
  • the radio frequency device 122 processes the received information and then sends it out through the antenna 121.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 123, which includes a baseband processor.
  • the baseband device 123 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 126, which is, for example, a common public radio interface (CPRI).
  • a network interface 126 which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 1200 in this embodiment of the present application also includes: instructions or programs stored in the memory 125 and executable on the processor 124.
  • the processor 124 calls the instructions or programs in the memory 125 to execute the instructions shown in Figure 6 method and achieve the same technical effect. To avoid repetition, we will not repeat it here.
  • the embodiment of the present application also provides a network side device.
  • the network side device 1200 includes: a processor 1201, a network interface 1202, and a memory 1203.
  • the network interface 1202 is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 1200 in the embodiment of the present application also includes: instructions or programs stored in the memory 1203 and executable on the processor 1201.
  • the processor 1201 calls the instructions or programs in the memory 1203 to execute the instructions shown in Figure 1111. method and achieve the same technical effect. To avoid repetition, we will not repeat it here.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • the program or instructions are executed by a processor, each of the above communication establishment method embodiments or information generation method embodiments is implemented. This process can achieve the same technical effect. To avoid repetition, it will not be described again here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above communication establishment method embodiment or Each process of the information generation method embodiment can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above communication establishment method embodiment. Or each process of the information generation method embodiment, and can achieve the same technical effect, so to avoid repetition, they will not be described again here.
  • Embodiments of the present application also provide a communication establishment system, including: a terminal device and a network side device.
  • the terminal device can be used to perform the steps of the communication establishment method described in the first aspect.
  • the network side device can be used to Execute the steps of the communication establishment method described in the second aspect above.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented 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 computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请涉及一种通信建立方法、装置、终端设备及网络侧设备，属于通信技术领域，本申请实施例的通信建立方法包括：第一终端设备发送第一请求，所述第一请求用于建立与第二终端设备的视频通话；所述第一请求的发送条件包括：所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。

Description

一种通信建立方法、装置、终端设备及网络侧设备
相关申请的交叉引用
本申请要求在2022年09月09日提交中国专利局、申请号为202211103203.4、名称为“一种通信建立方法、装置、终端设备及网络侧设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于通信技术领域，具体涉及一种通信建立方法、装置、终端设备及网络侧设备。
背景技术
3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)标准引入了在通话过程中建立DC(Data Channel，数据通道)的机制，通过DC可以在通话过程中进行额外的业务，例如进行屏幕共享，位置共享，文件传输等，从而给用户带来更好的体验。
不同的业务对应不同的DC application(数据通道应用)，该DC application可以在通话过程中动态下载到终端，不需要终端提前安装，方便用户使用。为了方便描述，下文将DC application简称为APP。
通信双方若启用某个APP，需要首先从DC Server(DC服务器)动态下载该APP，并为该APP建立对应的application DC(应用数据通道)。不同的APP有不同的QoS(Quality of Service，服务质量)需求，例如AR application要求低时延高吞吐，屏幕共享application要求实时性好等。通常每个APP都需要建立自己对应的application DC。
相关技术中，每个UE能够支持的DC特性不一样，例如，完全不支持DC特性，或，仅支持某些DC特性。当通信双方的DC特性不匹配时，可以由网络侧设备，例如DCMF(Data Channel Media Function，数据通道媒体功能)进行处理，例如UE-A支持屏幕共享特性，UE-B不支持DC或不支持屏幕共享特性，此时，UE-A可以通过DC将UE-A的屏幕信息发送给DCMF，DCMF以视频的形式向UE-B播放。
然而，目前两个终端在建立视频通话之后，再触发DC application，应用场景较为局限，用户体验较差。例如，要求UE-A与UE-B在使用DC业务前就建立视频通话，当UE-A需要使用屏幕共享特性时，DCMF通过UE-B与UE-A间的视频通话的通道将屏幕共享的视频流发送给UE-B。若UE-A与UE-B间无视频通话，就无法使用屏幕共享特性，影响UE-A用户的体验。
发明内容
本申请实施例提供一种通信建立方法、装置、终端设备及网络侧设备，能够解决建立会话的两个终端设备支持的DC能力不一样时，无法正常使用数据通道应用的问题。
第一方面，提供了一种通信建立方法，应用于第一终端设备，该方法包括：
第一终端设备发送第一请求，所述第一请求用于建立与所述第二终端设备的视频通话；
所述第一请求的发送条件包括：
所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。
第二方面，提供了一种通信建立方法，应用于第一网络侧设备，该方法包括：
第一网络侧设备向第二终端设备发送第三请求，所述第三请求用于建立所述第二终端设备与第二网络侧设备之间的视频流传输连接；
所述第三请求的发送条件包括以下至少一项：
所述第一网络侧设备接收到第三网络侧设备发送的第一信息，所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传输连接；或者，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备；
所述第一网络侧设备接收到第一终端设备发送的第一请求，所述第一请求用于建立数据通道，所述数据通道与目标数据通道应用对应。
第三方面，提供了一种信息生成方法，该方法包括：
第二终端设备在接收到第一请求的情况下，生成提示信息并显示；
其中，所述第一请求用于建立第一终端设备与所述第二终端设备的视频通话，且所述第一请求中携带用于指示仅发送的信息，和/或，用于指示播放视频的信息；
若所述第一请求中携带用于指示仅发送的信息，则所述提示信息用于提醒用户仅接收视频通话，不发送视频通话；
若所述第一请求中携带用于指示播放视频的信息，则所述提示信息用于提醒用户播放视频。
第四方面，提供了一种通信建立装置，应用于第一终端设备，该方法包括：
第一请求发送模块，用于发送第一请求，所述第一请求用于建立与所述第二终端设备的视频通话；
所述第一请求的发送条件包括：
所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。
第五方面，提供了一种通信建立装置，应用于第一网络侧设备，该装置包括：
第三请求发送模块，用于向第二终端设备发送第三请求，所述第三请求用于建立所述第二终端设备与第二网络侧设备之间的视频流传输连接；
所述第三请求的发送条件包括以下至少一项：
第一网络侧设备接收到第三网络侧设备发送的第一信息，所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传输连接；或者，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备；
所述第一网络侧设备接收到第一终端设备发送的第一请求，所述第一请求用于建立数据通道，所述数据通道与目标数据通道应用对应。
第六方面，提供了一种终端设备，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的通信建立方法或第三方面的信息生成方法的步骤。
第七方面，提供了一种网络侧设备，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第二方面所述的通信建立方法的步骤。
第八方面，提供了一种通信建立系统，包括：终端设备和网络侧设备，所述终端设备可用于执行如上述第一方面所述的通信建立方法的步骤，所述网络侧设备可用于执行如上述第二方面所述的通信建立方法的步骤。
第九方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面或第二方面所述的通信建立方法的步骤，或者实现如第三方面所述的信息生成方法的步骤。
第十方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面或第二方面所述的通信建立方法，或实现如第三方面所述的信息生成方法。
第十一方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面或者第二方面所述的通信建立方法的步骤，或实现如第三方面所述的信息生成方法的步骤。
第十二方面，提供了一种传输装置/设备，其中，包括所述装置/设备(被配置成)用于执行以实现如第一方面或者第二方面所述的通信建立方法的步骤，或实现如第三方面所述的信息生成方法的步骤。
本申请实施例提供的通信建立方法，第一终端设备可以在确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用的情况下，发送第一请求，建立与第二终端设备的视频通话，从而在第二终端设备无法使用目标数据通道应用时，通过新增的视频通话向第二终端设备传输目标数据通道应用的数据，有利于提高两个终端设备之间DC业务的使用成功率，且扩大了应用场景，提高用户体验。
附图说明
图1是本申请实施例可应用的一种无线通信系统的框图；
图2是相关技术中建立数据通道的流程示意图；
图3是本申请实施例中的一种通信建立方法的流程图
图4是本申请实施例中的一种建立数据通道的流程示意图；
图5是本申请实施例中的另一种建立数据通道的流程示意图；
图6是本申请实施例中的另一种通信建立方法的流程图；
图7是本申请实施例中的又一种建立数据通道的流程示意图；
图8是本申请实施例中的一种通信建立装置的结构框图；
图9是本申请实施例中的另一种通信建立装置的结构框图；
图10是本申请实施例中的一种通信设备的结构框图；
图11是本申请实施例中的一种终端设备的结构框图；
图12是本申请实施例中的一种网络侧设备的结构框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
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，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，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，字符“/”一般表示前后关联对象是一种“或”的关系。本申请的说明书和权利要求书中的术语“指示”既可以是一个明确的指示，也可以是一个隐含的指示。其中，明确的指示可以理解为，发送方在发送的指示中明确告知了接收方需要执行的操作或请求结果；隐含的指示可以理解为，接收方根据发送方发送的指示进行判断，根据判断结果确定需要执行的操作或请求结果。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，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。本申请实施例中的术语“系统”和“网络”常被可互换地使用，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。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端设备11和网络侧设备12。其中，终端设备11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented  reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。除了上述终端设备，终端设备11也可以是终端内的芯片，例如调制解调器(Modem)芯片，系统级芯片(System on Chip,SoC)。需要说明的是，在本申请实施例并不限定终端设备11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。核心网设备可以包含但不限于如下至少一项：核心网节点、核心网功能、移动管理实体(Mobility Management Entity，MME)、接入移动管理功能(Access and Mobility Management Function，AMF)、会话管理功能(Session Management Function，SMF)、用户平面功能(User Plane Function，UPF)、策略控制功能(Policy Control Function，PCF)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function，EASDF)、统一数据管理(Unified Data Management，UDM)，统一数据仓储(Unified Data Repository，UDR)、归属用户服务器(Home Subscriber Server，HSS)、集中式网络配置(Centralized network configuration，CNC)、网络存储功能(Network Repository Function，NRF)，网络开放功能(Network Exposure Function，NEF)、本地NEF(Local NEF，或L-NEF)、绑定支持功能(Binding Support Function，BSF)、应用功能(Application Function，AF)等。需要说明的是，在本申请实施例中仅以NR系统中的核心网设备为例进行介绍，并不限定核心网设备的具体类型。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的通信建立进行详细地说明。
在相关技术中，当通信双方启用某个APP(DC application，数据通道应用)时，需要首先从DC服务器中动态下载该APP，并为该APP建立对应的Application DC。需要说明的是，DC可以分为两种：Bootstrap DC(初始化数据通道)和Application DC(应用数据通道)。其中，Bootstrap DC是终端设备与DC服务器之间的数据通道，用于下载 APP。Application DC是终端设备与终端设备之间，或者终端设备与DC服务器之间的数据通道，用于传输APP对应的数据。通常情况下，先建立Bootstrap DC并下载APP，然后再根据APP的需求，如QoS需求，建立APP对应的Application DC。
参照图2，示出了相关技术中建立数据通道的流程示意图。如图2所示，终端A(UE-A)与终端B(UE-B)之间已经建立了语音通话和视频通话。其中，UE-A为DCMTSI(DataChannel Multimedia Telephony Service for IMS)终端，也即UE-A支持DC的IMS(IP Multimedia Subsystem，IP多媒体子系统)多媒体电话服务；UE-B为MTSI(Multimedia Telephony Service for IMS，IMS多媒体电话服务)终端，也即UE-B支持IMS多媒体电话服务。UE-A在通话过程中需要使用APP时，建立APP对应的Application DC，具体的建立流程如下：
1、UE-A向UE-B发起SIP re-INTITE请求，该请求用于建立Application DC。可以理解的是，该请求中包含建立2个Application DC的指示信息，这2个Application DC包括第一数据通道和第二数据通道，其中，第一数据通道的流标识(stream ID)可以为1000，用于传输视频流数据的RTP(Real-time Transport Protocol，实时传输协议)数据包；第二数据通道的流标识可以为1001，用于传输视频流数据的RTCP(RTP Control Protocol，RTP控制协议)数据包。需要说明的是，流标识用于标识数据通道，通常情况下，0-999用于标识Bootstrap DC，大于或等于1000的流标识用于标识Application DC。
2、AS(Application Server，应用服务器)根据接收到的SIP re-INTITE请求中包含的Application DC相关的内容，向DCSF(Data Channel Signaling Function，数据通道信令功能)发送Media Event Report(媒体事件报道)，该媒体事件报道用于请求建立Application DC，包含UE-A请求建立的2个Application DC的相关内容。其中，AS和DCSF都是UE-A所在网络的网络侧设备。AS可以是图2中示出的MMTel AS(Multi Media Telephony Application Server，MMTel应用服务器)，也可以是其他的AS，例如TAS(Telephony Application Server,电话应用服务器)，本申请对此不做限定。
3、DCSF生成策略信息，该策略信息用于指示建立DC的策略。示例性地，DCSF可以根据请求建立的Application DC对应的APP的信息，判断UE-B是否支持数据通道、判断UE-B所在的网络是否支持数据通道，以及判断UE-B是否支持请求建立的Application DC对应的APP。如果UE-B满足第一条件，DCSF生成第一策略信息，所述第一策略信息用于指示建立UE-A与DCMF(Data Channel Media Function，数据通道媒体功能)之间的数据通道，以及用于指示将UE-B的视频流(video media streams或video streams)传输连接锚定(anchor)到DCMF。其中，所述第一条件可以包括以下至少一项：UE-B不支持数据通道；UE-B所在的网络不支持数据通道；UE-B不支持请求建立的Application DC对应的APP。可以理解的是，如果UE-B不满足第一条件，也即UE-B支持数据通道、UE-B所在的网络支持数据通道，并且UE-B支持请求建立的Application DC对应的APP，DSCF生成第二策略信息，所述第二策略信息用于指示建立UE-A与UE-B 之间的数据通道，从而直接通过UE-A与UE-B之间的数据通道传输APP的数据。
4、DCSF向AS发送策略信息，也即DC Control。该策略信息可能是第一策略信息，也有可能是第二策略信息。
5、AS向DCMF发送Media Resource Management(媒体资源管理)信息，该媒体资源管理信息用于请求分配DCMF资源。请求分配的DCMF资源用于建立UE-A与DCMF之间的数据通道，还用于建立DCMF与UE-B之间的视频流连接。可以理解的是，AS向DCMF发送媒体资源管理信息的条件为：AS接收到DCSF发送的第一策略信息。如果AS接收到DCSF发送的第二策略信息，可以直接触发建立UE-A和UE-B之间的数据通道，无需请求分配DCMF资源。
6、AS向UE-B发送SIP re-INVITE请求，该SIP re-INVITE请求用于建立APP对应的应用数据通道。
可以理解的是，如果AS从DCSF接收到的策略信息为第一策略信息，则该SIP re-INVITE请求中包含将UE-B的视频流传输连接的对端设置为DCMF的第一请求信息。具体地，所述第一请求信息中包含DCMF的IP地址和端口号，用于触发UE-B与DCMF建立视频流传输连接。可选地，所述视频流传输连接包括RTP连接。可选地，该第一请求信息可以是会话描述协议请求(Session Description Protocol offer,SDP offer)信息，也即图2中的SDP提供锚定视频(SDP offer of anchoring video)，在SDP offer中包含DCMF的IP地址和端口号。
如果AS从DCSF接收到的策略信息为第二策略信息，则该SIP re-INVITE请求中包含建立UE-A与UE-B之间的数据通道的第二请求信息，所述第二请求中包含UE-A的IP地址和端口号，用于触发UE-B与UE-A之间的数据通道。需要说明的是，AS向UE-B发送的SIP re-INVITE请求，通过为UE-B提供服务的IMS Core(IMS核心网)发送给UE-B。可选地，该第二请求信息可以是SDP offer信息，也即图2中的SDP offer of anchoring video，在SDP offer中包含UE-A的IP地址和端口号。
7、UE-B回复响应消息，该响应消息可以为200OK消息。在响应消息中可以包括会话描述协议应答(Session Description Protocol answer,SDP answer)SDP answer信息，也即图2中的锚定视频的会话描述协议应答(SDP answer of anchoring video)。在SDP answer消息中包含UE-B的IP地址和端口号。
8、AS向UE-B回复确认消息，该确认消息可以为ACK消息(ACK for re-INVITE)。
9、AS根据UE-B发送的响应消息，向UE-A发送响应消息。该响应消息也可以为200OK消息(200OK for re-INVITE)，用于通知UE-A数据通道建立成功。
10、UE-A向AS回复确认消息，该确定消息也可以为ACK消息(ACK for re-INVITE)。
当UE-A在与UE-B通话的过程中需要使用APP时，如果存在以下至少一种情况：UE-B不支持数据通道；UE-B所在的网络不支持数据通道；UE-B不支持UE-A使用的APP。通过上述流程，建立UE-A与DCMF之间的数据通道，并建立UE-B与DCMF之 间的视频流传输连接，UE-A中的APP可以通过建立的数据通道将APP的数据发送给DCMF，由DCMF将APP的数据通过与UE-B的视频流传输连接发送给UE-B。
然而，相关技中两个终端设备在建立视频通话之后，再触发DC application，应用场景较为局限，用户体验较差。例如，要求UE-A与UE-B在使用DC业务，也即使用APP之前就建立视频通话，当UE-A需要使用APP时，DCMF通过UE-B与UE-A间的视频通话的通道将APP的视频流数据发送给UE-B。若UE-A与UE-B间无视频通话，就无法使用APP，影响UE-A用户的体验；若UE-A与UE-B间存在视频通话，则UE-A向UE-B发送APP的视频流数据后，UE-B的用户无法看到UE-A的用户的视频，影响UE-B用户的体验。
为了解决上述问题，本申请提供了一种通信建立方法，可以在第二终端不支持DC业务时，建立第一终端设备与第二终端设备之间的通信连接，提高两个终端设备之间DC业务的使用成功率。
第一方面，参照图3，示出了本申请实施例所提供的一种通信建立方法的流程图。该方法应用于第一终端设备，如图3所述，该方法具体可以包括：
步骤301、第一终端设备发送第一请求，所述第一请求用于建立与所述第二终端设备的视频通话。
所述第一请求的发送条件包括：
A1、所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。
在本申请实施例中，第一终端设备与第二终端设备可以是图1中的终端设备11，其中，对于终端设备11的说明可以参见前文的相关描述，在此不再赘述。
需要说明的是，第一终端设备与第二终端设备之间已经建立了通话，所述通话可以是语音通话和/或视频通话，主要用于实现常规的通话业务。
在确定触发目标数据通道应用，且确定第二终端设备无法使用所述目标数据通道应用的情况下，第一终端设备发送第一请求，所述第一请求用于建立与第二终端设备的视频通话，所述视频通话主要用于实现DC业务，如传输第一终端设备中使用的APP的数据。
其中，第一终端设备如果检测到用户针对目标数据通道应用的触发操作，则可以确定触发目标数据通道应用。所述触发操作可以包括但不限于：用户针对第二终端设备的显示界面中显示的目标数据通道应用图标的点击操作、对目标数据通道应用的某个功能控件的点击操作、用户针对目标数据通道应用发出的语音启动指令，等等。
第一终端设备可以在建立与第二终端设备的IMS(IP Multimedia Subsystem，IP多媒体子系统)会话后，接收用户的触发操作。其中，所述IMS会话可以包括语音会话，和/或，视频会话。
所述目标数据通道应用为用户选择或使用的数据通道应用，所述目标数据通道应用 可以包括但不限于：屏幕共享应用、AR渲染应用、视频特效应用。在本申请实施例的一种可能的应用场景中，第一终端设备检测到用户针对目标数据通道应用的使用操作，例如，第一终端设备检测到用户针对应用列表中的任一数据通道应用的选择操作和/或下载操作，则可以确定该数据通道应用为目标数据通道应用。所述应用列表中包含各个数据通道应用的属性信息，所述属性信息包括但不限于：数据通道应用所需的数据通道特性、支持数据通道应用的终端设备、网络侧设备是否支持对数据通道应用的数据进行转化，等等。
在满足预设条件的情况下，所述第一终端设备确定所述第二终端设备无法使用所述目标数据通道应用，所述预设条件包括以下至少一项：
所述第二终端设备不支持数据通道；
所述第二终端设备所在的网络不支持数据通道；
所述第二终端设备不支持目标数据通道应用。
作为一种示例，第一终端设备可以根据应用列表中目标数据通道应用的属性信息，以及第二终端设备的相关信息，如第二终端设备支持的数据通道特性、第二终端设备所在的网络支持的数据通道特性等，判断第二终端设备是否符合预设条件，如果第二终端设备符合预设条件，则可以确定第二终端设备无法使用目标数据通道应用。
参照图4，示出了本申请实施例的一种建立数据通道的流程示意图。如图4所示，第一终端设备在确定第二终端设备符合预设条件的情况下，向AS发送第一请求，所述第一请求用于建立与第二终端设备的视频通话。其中，AS为本申请实施例中的第一网络侧设备。
需要说明的是，所述第一请求中携带有新增视频通话的会话描述信息。具体地，可以在第一请求携带的历史会话描述信息的基础上增加请求建立的视频通话的描述信息，该描述信息可以包括视频通话的m行和a行，其中，m行用于指定通话的多媒体信息流类型为视频通话、发送视频通话的端口号、传输协议、编码格式等信息。a行用于描述视频通话的其他属性。该会话描述信息可以是SDP offer。
可选地，所述第一请求中携带用于指示仅发送的信息；和/或，用于指示播放视频的信息。
需要说明的是，可以在新增视频通话的会话描述信息的a行中携带该视频通话的属性信息，具体可以包括用于指示仅发送的信息；和/或，用于指示播放视频的信息。所述用于指示仅发送的信息，用于通知第二终端设备仅需要接收视频通话，无需发送视频通话，所述用于指示仅发送的信息可以为“send only”信息。所述用于指示播放视频的信息，用于通知第二终端设备播放视频通话的视频流数据。
第一终端设备通过在发送的第一请求中携带上述属性信息，可以通知第二终端设备仅接收视频通话，和/或，播放视频通话的视频流数据，能够有效避免持有第二终端设备的用户因不想发送视频通话而拒绝第一终端设备发送的第一请求，有利于提升视频通话 的建立成功率。
可选地，所述方法还包括：
所述第一终端设备确定所述视频通话建立成功时，发起第二请求，所述第二请求用于建立数据通道，所述数据通道与所述目标数据通道应用对应。
可选地，当第一终端收到200OK响应消息时，确定所述视频通话建立成功；或者，当第一终端收到SDP answer时，确定所述视频通话建立成功。
如图4所示，第一终端设备确定视频通话建立成功后，发起第二请求，所述第二请求可以为SIP re-INTITE请求，用于建立数据通道。所述第二请求中携带有建立2个Application DC的指示信息，这2个Application DC包括第一数据通道和第二数据通道，其中，第一数据通道的流标识(stream ID)可以为1000，用于传输视频流数据的RTP(Real-time Transport Protocol，实时传输协议)数据包；第二数据通道的流标识可以为1001，用于传输视频流数据的RTCP(RTP Control Protocol，RTP控制协议)数据包。
可选地，所述当所述第一终端设备确定所述视频通话建立成功时，发起第二请求，包括：
当所述第一终端设备接收到第一响应消息时，发起第二请求；
其中，所述第一响应消息中携带用于指示所述第二终端设备接受所述视频通话的描述信息。
第一终端设备可以根据接收到第二终端设备针对第一请求回复的第一响应消息，判断视频通话是否建立成功。具体地，若第一终端设备接收到的第一响应消息中携带用于指示视频通话建立成功的描述信息，则可以确定视频通话建立成功。反之，若第一终端设备接收到的响应消息中携带用于指示视频通话建立失败的描述信息，则可以确定视频通话建立失败。其中，响应消息中通常携带有会话描述信息，该会话描述信息可以是SDP answer。用于指示视频通话建立成功的描述信息可以是新增视频通话对应的会话描述中m行的端口号保持不变；用于指示视频通话建立失败的描述信息可以是新增视频通话对应的会话描述信息中m行的端口号置0。
需要说明的是，在图4所示的建立数据通道的处理流程中，仅对第一终端设备进行了改进，第一终端设备发送第二请求之后的处理流程，包括各个网络侧设备的处理流程，都与图2所示的处理流程相同，本申请实施例在此不再赘述。
在本申请的一种可选实施例中，所述第一请求还用于建立数据通道，所述数据通道与目标数据通道应用对应。
可选地，所述数据通道与目标数据通道应用对应可以理解为：所述数据通道用于传输所述目标数据通道应用的数据，或者，所述数据通道是为了使用所述目标数据通道应用进行通信而专门建立的。
本申请提供的通信建立方法，第一终端设备可以如图4所示，在确定触发目标数据通道应用，且确定第二终端设备无法使用所述目标数据通道应用时，发送用于建立与第 二终端设备的视频通话的第一请求，并且在确定视频通话建立成功后，再发送用于建立数据通道的第二请求。第一终端设备也可以在确定触发目标数据通道应用，且确定第二终端设备无法使用所述目标数据通道应用时，发起用于建立与第二终端设备的视频通话，以及用于建立数据通道的第一请求。
参照图5，示出了本申请的另一种建立数据通道的流程示意图。如图5所示，第一终端设备在确定触发目标数据通道应用，且确定第二终端设备无法使用所述目标数据通道应用的情况下，发起第一请求，所述第一请求可以为SIP re-INTITE请求。所述第一请求中携带有新增视频通话的会话描述信息，同时还携带有建立2个Application DC的指示信息，这2个Application DC包括第一数据通道和第二数据通道，其中，第一数据通道的流标识(stream ID)可以为1000，用于传输视频流数据的RTP(Real-time Transport Protocol，实时传输协议)数据包；第二数据通道的流标识可以为1001，用于传输视频流数据的RTCP(RTP Control Protocol，RTP控制协议)数据包。
可选地，所述第一请求的发送条件还包括：
A2、第二网络侧设备支持对所述目标数据通道应用进行互操作(interworking)处理。
其中，所述第二网络侧设备为DCMF。可选地，所述第二网络侧设备支持对所述目标数据通道应用进行互操作处理，包括：
第二网络侧设备支持将所述第一终端设备通过数据通道发送的目标数据通道应用的数据转化成视频流数据发送给所述第二终端设备。
其中，所述视频流数据通常为符合RTP协议的视频流数据包。
可选地，所述第一请求的发送条件还包括：
A3、所述第一终端设备支持对所述目标数据通道应用进行互操作处理。
可选地，所述第一终端设备支持对所述目标数据通道应用进行互操作处理，包括：
所述第一终端设备支持将目标数据通道应用的数据通过数据通道发送给第二网络侧设备。
在本申请实施例中，第一请求的发送条件除了可以包括A1，还可以包括A2，进一步地，所述发送条件还可以包括A1、A2和A3。
需要说明的是，针对不同的应用场景，第二网络侧设备支持对目标数据通道应用进行互操作处理的方式也不同。
在本申请实施例一种可能的应用场景中，第一终端设备不支持对目标数据通道应用进行互操作处理，第一终端设备直接将目标数据通道应用的数据通过数据通道发送给第二网络侧设备。在这种应用场景下，第二网络侧设备可以将接收到的目标数据通道应用的数据封装成RTP协议的数据包，然后将封装后的数据包发送给第二终端设备，从而实现对目标数据通道应用的互操作处理。
在本申请实施例另一种可能的应用场景中，第一终端设备支持对目标数据通道应用进行互操作处理，具体地，第一终端设备可以先将目标数据通道应用的数据封装成RTP 协议的数据包，然后再封装到数据通道中发送给第二网络侧设备。在这种应用场景下，第二网络侧设备接收到封装后的DC数据包后，可以直接去掉DC数据包的包头，将DC数据包中的RTP数据包发送给第二终端设备，从而实现对目标数据通道应用的互操作处理。
在本申请的一种可能的应用场景中，所述方法还包括：
所述第一终端设备接收第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息。
在本申请的另一种可能的应用场景中，所述方法还包括：
所述第一终端设备接收第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息。
在图5所示的数据通道的建立流程中，第一网络侧设备AS会向第一终端设备UE-A发送响应消息，也即200OK for re-INVITE，参见图5中的步骤9。需要说明的是，该响应消息包括两种情况：用于指示数据通道建立成功的第二响应消息，或者，用于指示数据通道建立失败的第三响应消息。
如果第一网络侧设备确定所述第二终端设备接受所述视频通话；和/或，第一网络侧设备确定所述第二终端设备与第二网络侧设备之间的视频流传输连接建立完成，第一终端设备就会接收到第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息。例如，所述第二响应消息中携带的会话描述信息中，仍然携带目标数据通道应用对应的数据通道的a行。
反之，如果第一网络侧设备确定所述第二终端设备拒绝所述视频通话；和/或，第一网络侧设备确定所述第二终端设备与第二网络侧设备之间的视频流传输连接建立失败，第一终端设备就会接收到第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息。例如，所述第三响应消息中携带的会话描述信息中，未携带目标数据通道应用对应的a行。
需要说明的是，终端设备的所有数据通道应用在会话描述信息中公用一个m行，若该m行的端口号置0，说明该终端设备不支持数据通道。数据通道中的每个APP对应一个a行，若第一终端设备接收到的第三响应消息中不携带目标数据通道应用对应的a行，说明第二终端设备拒绝该目标数据通道应用。
本申请的说明书和权利要求书中的术语“指示”，既可以是一个明确的指示也可以是一个隐含的指示。这里未携带目标数据通道应用对应的数据通道的a行可以理解为一个隐含的指示，即通过未携带目标数据通道应用对应的数据通道的a行，指示第二终端设备拒绝建立目标数据通道应用对应的数据通道。此时，需要第一终端设备根据响应消息中携带的会话描述信息判断数据通道是否建立成功。
本申请实施例提供的通信建立方法，第一终端设备可以在确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用的情况下，发送第一请求，建立与 第二终端设备的视频通话，从而在第二终端设备无法使用目标数据通道应用时，通过新增的视频通话向第二终端设备传输目标数据通道应用的数据，有利于提高两个终端设备之间DC业务的使用成功率。
第二方面，参照图6，示出了本申请实施例提供的另一种通信建立方法的流程图。该方法应用于第一网络侧设备，如图6所示，该方法具体可以包括：
步骤601、第一网络侧设备向第二终端设备发送第三请求，所述第三请求用于建立所述第二终端设备与第二网络侧设备之间的视频流传输连接；
所述第三请求的发送条件包括以下至少一项：
B1、所述第一网络侧设备接收到第三网络侧设备发送的第一信息，所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传输连接；或者，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备；
B2、所述第一网络侧设备接收到第一终端设备发送的第一请求，所述第一请求用于建立数据通道，所述数据通道与目标数据通道应用对应。
在本申请实施例中，所述第一网络侧设备、所述第二网络侧设备和所述第三网络侧设备可以是图1中的核心网设备，例如，所述第一网络侧设备可以为MMTel AS，所述第二网络侧设备可以为DCMF，所述第三网络侧设备可以为DCSF。
其中，所述第一信息是第三网络侧设备在确定第二终端设备无法使用所述目标数据通道应用的情况下生成的，在满足预设条件的情况下，可以确定所述第二终端设备无法使用所述目标数据通道应用，所述预设条件包括以下至少一项：
C1、所述第二终端设备不支持数据通道；
C2、所述第二终端设备所在的网络不支持数据通道；
C3、所述第二终端设备不支持目标数据通道应用。
可选地，所述第一信息的生成条件，除了包括：确定第二终端设备无法使用所述目标数据通道应用，还包括：确定第二网络侧设备支持对所述目标数据通道应用进行互操作处理。
可选地，所述第一信息的生成条件还包括：所述第一终端设备支持对所述目标数据通道应用进行互操作处理。
参照图7，示出了本申请的又一种建立数据通道的流程示意图。其中，图7中的步骤1-5同图2中的步骤1-5，具体说明可以参照前述图2的相关描述，本申请在此不再赘述。如图7所示，第一终端设备UE-A发起第一请求，所述第一请求可以为SIP re-INTITE请求，用于建立数据通道。在图7所示的步骤3中，DCSF可以根据请求建立的数据通道对应的目标数据通道应用的信息，判断UE-B是否支持数据通道、判断UE-B所在的网络是否支持数据通道，以及判断UE-B是否支持目标数据通道应用。当DCSF确定UE-B满足上述预设条件C1-C3中的至少一项时，生成第一信息。在图7所示的数据通道建立流程中，所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传 输连接。
在图4所示的数据通道建立流程中，第一终端设备发送的第一请求用于建立与第二终端设备的视频通话。在图4所示的步骤3中，DCSF同样可以在确定UE-B满足上述预设条件C1-C3中的至少一项时，生成第一信息。所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定(anchoring)到所述第二网络侧设备。可选地，所述将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备，包括：将所述第二终端设备的视频流传输连接的对端设置为所述第二网络侧设备。
可选地，所述第一请求还用于建立所述第一终端设备与所述第二终端设备的视频通话。
在图5所示的数据通道建立流程中，所述第一请求用于建立数据通道，还用于建立所述第一终端设备与所述第二终端设备的视频通话。在图5所示的步骤3中，DCSF同样可以在确定UE-B满足上述预设条件C1-C3中的至少一项时，生成第一信息。所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传输连接。
在本申请实施例中，在图4、5、7任一项所示的数据通道建立流程中，第一网络侧设备都会向第二终端设备发送第三请求，以建立第二终端设备与第二网络侧设备之间的视频流传输连接，具体可以参照图4、5、7中的步骤6。在不同的数据通道建立流程中，第一终端设备发送的第一请求不同，第三网络侧设备生成的第一信息也不同。
可选地，所述第一请求中携带用于指示仅发送的信息；和/或，用于指示播放视频的信息。
需要说明的是，在图4或图5所示的数据通道建立流程中，第一终端设备发送的第一请求均可用于建立与第二终端设备的视频通话，因此在这两种数据通道建立方式中，第一请求中均可以包含该视频通话的属性信息，所述属性信息具体可以包括用于指示仅发送的信息；和/或，用于指示播放视频的信息。
作为一种示例，可以在新增视频通话的会话描述信息的a行中携带上述属性信息。所述属性信息中用于指示仅发送的信息，用于通知第二终端设备仅需要接收视频通话，无需发送视频通话，所述用于指示仅发送的信息可以为“send only”信息。所述属性信息中用于指示播放视频的信息，用于通知第二终端设备播放视频通话的视频流数据。
可选地，所述第三请求中包含新增所述第二终端设备对应的视频流传输连接的请求信息。
在图5或图7所示的数据通道建立流程中，第一网络侧设备发送的第三请求中包含新增所述第二终端设备对应的视频流传输连接的请求信息，用于新建立第二终端设备与第二网络侧设备之间的视频流传输连接。其中，所述请求信息中可以为SDP offer，也即图5或图7中的SDP offer of video，该请求信息中包括第二网络侧设备的IP地址和端口号，通过第三请求发送给第二终端设备，从而使得第二终端设备建立与第二网络侧设备之间的视频流传输连接，所述视频流传输连接可以是RTP连接。
在图4所示的数据通道建立流程中，所述第三请求中包含将第二终端设备的视频流传输连接锚定到第二网络侧设备的请求信息，具体可以包含将第二终端设备的视频流传输连接的对端设置为第二网络侧设备的请求信息。同样地，所述请求信息中可以包括第二网络侧设备的IP地址和端口号，以使第二终端设备将视频传输连接的对端从第一终端设备修改为第二网络侧设备。
可选地，所述方法还包括：
所述第一网络侧设备向所述第一终端设备发送第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息；
其中，所述第二响应消息的发送条件包括以下至少一项：
所述第一网络侧设备确定所述第二终端设备接受所述视频通话；
所述第一网络侧设备确定所述第二终端设备与所述第二网络侧设备之间的视频流传输连接建立完成。
可选地，所述方法还包括：
所述第一网络侧设备向所述第一终端设备发送第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息；
其中，所述第三响应消息的发送条件包括以下至少一项：
所述第一网络侧设备确定所述第二终端设备拒绝所述视频通话；
所述第一网络侧设备确定所述第二终端设备与所述第二网络侧设备之间的视频流传输连接建立失败。
在图5或图7所示的数据通道建立流程中，第一网络侧设备AS会向第一终端设备UE-A发送响应消息，也即200OK for re-INVITE，参见图5或图7中的步骤9。需要说明的是，该响应消息包括两种情况：用于指示数据通道建立成功的第二响应消息，或者，用于指示数据通道建立失败的第三响应消息。
如果第一网络侧设备确定所述第二终端设备接受所述视频通话；和/或，第一网络侧设备确定所述第二终端设备与第二网络侧设备之间的视频流传输连接建立完成，第一网络侧设备就会向第一终端设备发送第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息。例如，所述第二响应消息中携带的会话描述信息中，仍然携带目标数据通道应用对应的数据通道的a行。
反之，如果第一网络侧设备确定所述第二终端设备拒绝所述视频通话；和/或，第一网络侧设备确定所述第二终端设备与第二网络侧设备之间的视频流传输连接建立失败，第第一网络侧设备就会向第一终端设备发送第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息。例如，所述第三响应消息中携带的会话描述信息中，未携带目标数据通道应用对应的a行。
本申请实施例提供的通信建立方法，第一网络侧设备可以在满足发送条件时，发送第三请求，以建立第二终端设备与第二网络侧设备之间的视频流传输连接，从而使得第 二网络侧设备通过与第二终端设备之间的视频流传输连接，向第二终端设备发送第一终端设备通过数据通道转发的目标数据通道应用的视频流数据，有利于提高两个终端设备之间DC业务的使用成功率。
本申请实施例提供的通信建立方法，执行主体可以为一种通信建立装置。本申请实施例中以通信建立装置执行前述第一方面或第二方面的通信建立方法为例，说明本申请实施例提供的通信建立装置。
第三方面，本申请实施例提供了一种信息生成方法，该方法应用于第二终端设备，具体可以包括：
第二终端设备在接收到第一请求的情况下，生成提示信息并显示。
其中，所述第一请求用于建立第一终端设备与所述第二终端设备的视频通话，且所述第一请求中携带用于指示仅发送的信息，和/或，用于指示播放视频的信息。
若所述第一请求中携带用于指示仅发送的信息，则所述提示信息用于提醒用户仅接收视频通话，不发送视频通话；
若所述第一请求中携带用于指示播放视频的信息，则所述提示信息用于提醒用户播放视频通话的视频流数据。
第二终端设备在接收到建立第一终端设备与所述第二终端设备的视频通话的第一请求时，通过生成提示信息，提醒用户仅接收视频通话，不发送视频通话，和/或，播放视频通话的视频流数据，能够有效避免持有第二终端设备的用户因不想发送视频通话而拒绝第一终端设备发送的第一请求，有利于提升视频通话的建立成功率。
第四方面，本申请实施例提供了一种通信建立装置，该装置可以应用于第一终端设备。参照图8，示出了本申请实施例提供的一种通信建立装置的结构框图，如图8所示，该装置80具体可以包括：
第一请求发送模块801，用于发送第一请求，所述第一请求用于建立与所述第二终端设备的视频通话；
所述第一请求的发送条件包括：
所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。
可选地，所述装置还包括：
第二请求发送模块，用于确定所述视频通话建立成功时，发送第二请求，所述第二请求用于建立数据通道，所述数据通道与所述目标数据通道应用对应。
可选地，所述第一请求还用于建立数据通道，所述数据通道与目标数据通道应用对应。
可选地，在满足预设条件的情况下，所述第一终端设备确定所述第二终端设备无法使用所述目标数据通道应用，所述预设条件包括以下至少一项：
所述第二终端设备不支持数据通道；
所述第二终端设备所在的网络不支持数据通道；
所述第二终端设备不支持目标数据通道应用。
可选地，所述第一请求中携带用于指示仅发送的信息；和/或，用于指示播放视频的信息。
可选地，所述第一请求的发送条件还包括：
第二网络侧设备支持对所述目标数据通道应用进行互操作处理。
可选地，所述第一请求的发送条件还包括：
所述第一终端设备支持对所述目标数据通道应用进行互操作处理。
可选地，所述第二网络侧设备支持对所述目标数据通道应用进行互操作处理，包括：
第二网络侧设备支持将所述第一终端设备通过数据通道发送的目标数据通道应用的数据转化成视频流数据发送给所述第二终端设备。
可选地，所述第一终端设备支持对所述目标数据通道应用进行互操作处理，包括：
所述第一终端设备支持将目标数据通道应用的数据通过数据通道发送给第二网络侧设备。
可选地，所述第二请求发送模块，包括：
第二请求发送子模块，用于接收到第一响应消息时，发送第二请求；
其中，所述第一响应消息中携带用于指示所述第二终端设备接受所述视频通话的描述信息。
可选地，所述装置还包括：
第二响应消息接收模块，用于接收第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息。
可选地，所述装置还包括：
第三响应消息接收模块，用于接收第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息。
第五方面，本申请实施例提供了另一种通信建立装置，该装置可应用于第一网络侧设备。参照图9，示出了本申请实施例提供的一种通信建立装置的结构框图，如图9所示，该装置90具体可以包括：
第三请求发送模块901，用于向第二终端设备发送第三请求，所述第三请求用于建立所述第二终端设备与第二网络侧设备之间的视频流传输连接；
所述第三请求的发送条件包括以下至少一项：
第一网络侧设备接收到第三网络侧设备发送的第一信息，所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传输连接；或者，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备；
所述第一网络侧设备接收到第一终端设备发送的第一请求，所述第一请求用于建立数据通道，所述数据通道与目标数据通道应用对应。
可选地，所述第一请求还用于建立所述第一终端设备与所述第二终端设备的视频通话。
可选地，所述第一请求中携带用于指示仅发送的信息；和/或，用于指示播放视频的信息。
可选地，所述第三请求中包含新增所述第二终端设备对应的视频流传输连接的请求信息。
可选地，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备，包括：
所述第一信息用于指示将所述第二终端设备的视频流传输连接的对端设置为所述第二网络侧设备。
可选地，所述装置还包括：
第二响应消息发送模块，用于向所述第一终端设备发送第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息；
其中，所述第二响应消息的发送条件包括以下至少一项：
所述第一网络侧设备确定所述第二终端设备接受所述视频通话；
所述第一网络侧设备确定所述第二终端设备与所述第二网络侧设备之间的视频流传输连接建立完成。
可选地，所述装置还包括：
第三响应消息发送模块，用于向所述第一终端设备发送第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息；
其中，所述第三响应消息的发送条件包括以下至少一项：
所述第一网络侧设备确定所述第二终端设备拒绝所述视频通话；
所述第一网络侧设备确定所述第二终端设备与所述第二网络侧设备之间的视频流传输连接建立失败。
可选地，所述第一网络侧设备包括所述第一终端设备所在网络中的应用服务器。
可选地，所述第二网络侧设备包括所述第一终端设备所在网络中的数据通道媒体功能。
可选地，所述第三网络侧设备包括所述第一终端设备所在网络中的数据通道信令功能。
本申请实施例中的通信建立装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端设备11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的通信建立装置能够实现图3、图6的方法实施例实现的各个过 程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选地，如图10所示，本申请实施例还提供一种通信设备1000，包括处理器1001和存储器1002，存储器1002上存储有可在所述处理器1001上运行的程序或指令，例如，该通信设备1000为终端设备时，该程序或指令被处理器1001执行时实现上述第一方面所述的通信建立方法实施例的各个步骤，且能达到相同的技术效果。该通信设备1000为网络侧设备时，该程序或指令被处理器1001执行时实现上述第二方面所述的通信建立方法实施例的各个步骤，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终端设备，如图11所示，为实现本申请实施例的一种终端设备的结构框图。
该终端设备1100包括但不限于：射频单元1101、网络模块1102、音频输出单元1103、输入单元1104、传感器1105、显示单元1106、用户输入单元1107、接口单元1108、存储器1109以及处理器1110等中的至少部分部件。
本领域技术人员可以理解，终端设备1100还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1110逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图11中示出的终端设备结构并不构成对终端设备的限定，终端设备可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1104可以包括图形处理单元(Graphics Processing Unit，GPU)11041和麦克风11042，图形处理器11041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1106可包括显示面板11061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板11061。用户输入单元1107包括触控面板11071以及其他输入设备11072中的至少一种。触控面板11 071，也称为触摸屏。触控面板11071可包括触摸检测装置和触摸控制器两个部分。其他输入设备11072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1101接收来自网络侧设备的下行数据后，可以传输给处理器1110进行处理；另外，射频单元1101可以向网络侧设备发送上行数据。通常，射频单元1101包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1109可用于存储软件程序或指令以及各种数据。存储器1109可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1109可以包括易失性存储器或非易失性存储器，或者，存储器1109可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Onl12Memor12，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electricall12EPROM， EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memor12，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(D12namic RAM，DRAM)、同步动态随机存取存储器(S12nchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(S12nch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器1109包括但不限于这些和任意其它适合类型的存储器。
处理器1110可包括一个或多个处理单元；可选的，处理器1110集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1110中。
在本申请的一种可选实施例中，当处理器确定满足发送条件时，射频单元1101用于发送第一请求，所述第一请求用于建立与所述第二终端设备的视频通话；
所述第一请求的发送条件包括：
所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。
可选地，当处理器确定所述视频通话建立成功时，射频单元1101用于发送第二请求，所述第二请求用于建立数据通道，所述数据通道与所述目标数据通道应用对应。
可选地，所述第一请求还用于建立数据通道，所述数据通道与目标数据通道应用对应。
可选地，在满足预设条件的情况下，所述处理器确定第二终端设备无法使用所述目标数据通道应用，所述预设条件包括以下至少一项：
所述第二终端设备不支持数据通道；
所述第二终端设备所在的网络不支持数据通道；
所述第二终端设备不支持目标数据通道应用。
可选地，所述第一请求中携带用于指示仅发送的信息；和/或，用于指示播放视频的信息。
可选地，所述第一请求的发送条件还包括：
第二网络侧设备支持对所述目标数据通道应用进行互操作处理。
可选地，所述第一请求的发送条件还包括：
所述第一终端设备支持对所述目标数据通道应用进行互操作处理。
可选地，所述第二网络侧设备支持对所述目标数据通道应用进行互操作处理，包括：
第二网络侧设备支持将所述第一终端设备通过数据通道发送的目标数据通道应用的数据转化成视频流数据发送给所述第二终端设备。
可选地，所述第一终端设备支持对所述目标数据通道应用进行互操作处理，包括：
所述第一终端设备支持将目标数据通道应用的数据通过数据通道发送给第二网络侧设备。
可选地，射频单元1101发送第二请求，具体用于：
在接收到第一响应消息时，发送第二请求；
其中，所述第一响应消息中携带用于指示所述第二终端设备接受所述视频通话的描述信息。
可选地，射频单元1101还用于接收第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息。
可选地，射频单元1101还用于接收第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息。
可选地，处理器在检测到用户针对应用列表中的任一数据通道应用的选择操作和/或下载操作的情况下，确定所述数据通道应用为目标数据通道应用。
本申请实施例还提供一种网络侧设备，如图12所示，该网络侧设备1200包括：天线121、射频装置122、基带装置123、处理器124和存储器125。天线121与射频装置122连接。在上行方向上，射频装置122通过天线121接收信息，将接收的信息发送给基带装置123进行处理。在下行方向上，基带装置123对要发送的信息进行处理，并发送给射频装置122，射频装置122对收到的信息进行处理后经过天线121发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置123中实现，该基带装置123包括基带处理器。
基带装置123例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图12所示，其中一个芯片例如为基带处理器，通过总线接口与存储器125连接，以调用存储器125中的程序，执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口126，该接口例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本申请实施例的网络侧设备1200还包括：存储在存储器125上并可在处理器124上运行的指令或程序，处理器124调用存储器125中的指令或程序执行图6所示的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
具体地，本申请实施例还提供了一种网络侧设备。如图12所示，该网络侧设备1200包括：处理器1201、网络接口1202和存储器1203。其中，网络接口1202例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本申请实施例的网络侧设备1200还包括：存储在存储器1203上并可在处理器1201上运行的指令或程序，处理器1201调用存储器1203中的指令或程序执行图1111所示的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述通信建立方法实施例或信息生成方法实施例的各 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，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述通信建立方法实施例或信息生成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。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述通信建立方法实施例或信息生成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了一种通信建立系统，包括：终端设备及网络侧设备，所述终端设备可用于执行如上述第一方面所述的通信建立方法的步骤，所述网络侧设备可用于执行如上述第二方面所述的通信建立方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，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。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、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。
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计算机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 (29)

  1. 一种通信建立方法，其中，所述方法包括：
    第一终端设备发送第一请求，所述第一请求用于建立与所述第二终端设备的视频通话；
    所述第一请求的发送条件包括：
    所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述第一终端设备确定所述视频通话建立成功时，发送第二请求，所述第二请求用于建立数据通道，所述数据通道与所述目标数据通道应用对应。
  3. 根据权利要求1所述的方法，其中，所述第一请求还用于建立数据通道，所述数据通道与目标数据通道应用对应。
  4. 根据权利要求1至3任一项所述的方法，其中，在满足预设条件的情况下，所述第一终端设备确定所述第二终端设备无法使用所述目标数据通道应用，所述预设条件包括以下至少一项：
    所述第二终端设备不支持数据通道；
    所述第二终端设备所在的网络不支持数据通道；
    所述第二终端设备不支持目标数据通道应用。
  5. 根据权利要求1至4任一项所述的方法，其中，所述第一请求中携带用于指示仅发送的信息；和/或，用于指示播放视频的信息。
  6. 根据权利要求1至5任一项所述的方法，其中，所述第一请求的发送条件还包括：
    第二网络侧设备支持对所述目标数据通道应用进行互操作处理。
  7. 根据权利要求6所述的方法，其中，所述第一请求的发送条件还包括：
    所述第一终端设备支持对所述目标数据通道应用进行互操作处理。
  8. 根据权利要求6所述的方法，其中，所述第二网络侧设备支持对所述目标数据通道应用进行互操作处理，包括：
    第二网络侧设备支持将所述第一终端设备通过数据通道发送的目标数据通道应用的数据转化成视频流数据发送给所述第二终端设备。
  9. 根据权利要求7所述的方法，其中，所述第一终端设备支持对所述目标数据通道应用进行互操作处理，包括：
    所述第一终端设备支持将目标数据通道应用的数据通过数据通道发送给第二网络侧设备。
  10. 根据权利要求2所述的方法，其中，所述第一终端设备确定所述视频通话建立成功时，发送第二请求，包括：
    所述第一终端设备在接收到第一响应消息的情况下，发送第二请求；
    其中，所述第一响应消息中携带用于指示所述第二终端设备接受所述视频通话的描述信息。
  11. 根据权利要求3至9任一项所述的方法，其中，所述方法还包括：
    所述第一终端设备接收第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息。
  12. 根据权利要求3至9任一项所述的方法，其中，所述方法还包括：
    所述第一终端设备接收第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息。
  13. 根据权利要求1至12任一项所述的方法，其中，所述方法还包括：
    所述第一终端设备在检测到用户针对应用列表中的任一数据通道应用的选择操作和/或下载操作的情况下，确定所述数据通道应用为目标数据通道应用。
  14. 一种通信建立方法，其中，所述方法包括：
    第一网络侧设备向第二终端设备发送第三请求，所述第三请求用于建立所述第二终端设备与第二网络侧设备之间的视频流传输连接；
    所述第三请求的发送条件包括以下至少一项：
    所述第一网络侧设备接收到第三网络侧设备发送的第一信息，所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传输连接；或者，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备；
    所述第一网络侧设备接收到第一终端设备发送的第一请求，所述第一请求用于建立数据通道，所述数据通道与目标数据通道应用对应。
  15. 根据权利要求14所述的方法，其中，所述第一请求还用于建立所述第一终端设备与所述第二终端设备的视频通话。
  16. 根据权利要求15所述的方法，其中，所述第一请求中携带用于指示仅发送的信息；和/或，用于指示播放视频的信息。
  17. 根据权利要求14至16任一项所述的方法，其中，所述第三请求中包含新增所述第二终端设备对应的视频流传输连接的请求信息。
  18. 根据权利要求14至16任一项所述的方法，其中，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备，包括：
    所述第一信息用于指示将所述第二终端设备的视频流传输连接的对端设置为所述第二网络侧设备。
  19. 根据权利要求14至18任一项所述的方法，其中，所述方法还包括：
    所述第一网络侧设备向所述第一终端设备发送第二响应消息，所述第二响应消息中携带用于指示所述数据通道建立成功的描述信息；
    其中，所述第二响应消息的发送条件包括以下至少一项：
    所述第一网络侧设备确定所述第二终端设备接受所述视频通话；
    所述第一网络侧设备确定所述第二终端设备与所述第二网络侧设备之间的视频流传输连接建立完成。
  20. 根据权利要求14至18任一项所述的方法，其中，所述方法还包括：
    所述第一网络侧设备向所述第一终端设备发送第三响应消息，所述第三响应消息中携带用于指示所述数据通道建立失败的描述信息；
    其中，所述第三响应消息的发送条件包括以下至少一项：
    所述第一网络侧设备确定所述第二终端设备拒绝所述视频通话；
    所述第一网络侧设备确定所述第二终端设备与所述第二网络侧设备之间的视频流传输连接建立失败。
  21. 根据权利要求14至20任一项所述的方法，其中，所述第一网络侧设备包括所述第一终端设备所在网络中的应用服务器。
  22. 根据权利要求14至21任一项所述的方法，其中，所述第二网络侧设备包括所述第一终端设备所在网络中的数据通道媒体功能。
  23. 根据权利要求14至22任一项所述的方法，其中，所述第三网络侧设备包括所述第一终端设备所在网络中的数据通道信令功能。
  24. 一种信息生成方法，其中，所述方法包括：
    第二终端设备在接收到第一请求的情况下，生成提示信息并显示；
    其中，所述第一请求用于建立第一终端设备与所述第二终端设备的视频通话，且所述第一请求中携带用于指示仅发送的信息，和/或，用于指示播放视频的信息；
    若所述第一请求中携带用于指示仅发送的信息，则所述提示信息用于提醒用户仅接收视频通话，不发送视频通话；
    若所述第一请求中携带用于指示播放视频的信息，则所述提示信息用于提醒用户播放视频通话的视频流数据。
  25. 一种通信建立装置，其中，所述装置包括：
    第一请求发送模块，用于发送第一请求，所述第一请求用于建立与所述第二终端设备的视频通话；
    所述第一请求的发送条件包括：
    所述第一终端设备确定触发目标数据通道应用，且第二终端设备无法使用所述目标数据通道应用。
  26. 一种通信建立装置，其中，所述装置包括：
    第三请求发送模块，用于向第二终端设备发送第三请求，所述第三请求用于建立所述第二终端设备与第二网络侧设备之间的视频流传输连接；
    所述第三请求的发送条件包括以下至少一项：
    第一网络侧设备接收到第三网络侧设备发送的第一信息，所述第一信息用于指示建立所述第二终端设备与所述第二网络侧设备间的视频流传输连接；或者，所述第一信息用于指示将所述第二终端设备的视频流传输连接锚定到所述第二网络侧设备；
    所述第一网络侧设备接收到第一终端设备发送的第一请求，所述第一请求用于建立数据通道，所述数据通道与目标数据通道应用对应。
  27. 一种终端设备，其中，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至13任一项所述的通信建立方法或者如权利要求24所述的信息生成方法的步骤。
  28. 一种网络侧设备，其中，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求14至23任一项所述的通信建立方法的步骤。
  29. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至13或14至23任一项所述的通信建立方法，或者实现如权利要求24所述的信息生成方法的步骤。
PCT/CN2023/116666 2022-09-09 2023-09-04 一种通信建立方法、装置、终端设备及网络侧设备 WO2024051627A1 (zh)

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