WO2022111316A1 - 通信方法、装置及设备 - Google Patents

通信方法、装置及设备 Download PDF

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Publication number
WO2022111316A1
WO2022111316A1 PCT/CN2021/130466 CN2021130466W WO2022111316A1 WO 2022111316 A1 WO2022111316 A1 WO 2022111316A1 CN 2021130466 W CN2021130466 W CN 2021130466W WO 2022111316 A1 WO2022111316 A1 WO 2022111316A1
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WO
WIPO (PCT)
Prior art keywords
dedicated bearer
network
terminal device
tau
voice
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PCT/CN2021/130466
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English (en)
French (fr)
Inventor
李馥馨
马逸扬
包蕾
Original Assignee
北京紫光展锐通信技术有限公司
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Publication of WO2022111316A1 publication Critical patent/WO2022111316A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method, apparatus, and device.
  • a terminal device for example, a mobile phone, a tablet computer, etc.
  • a new radio new radio, NR
  • long term evolution long term evolution, LTE
  • the terminal device When the terminal device is on the NR network, if the terminal device has a demand for voice services, the terminal device can fall back from the NR network to the LTE network and perform voice services on the LTE network. When the terminal device falls back from the NR network to the LTE network, the terminal device needs to perform a tracking area update (TAU). During the TAU process, the terminal device cannot create a dedicated voice bearer under the LTE network, making voice calls failure, resulting in poor communication reliability.
  • TAU tracking area update
  • Embodiments of the present application provide a communication method, apparatus, and device. Improve the probability of telephone calls, thereby improving the reliability of communication.
  • an embodiment of the present application provides a communication method, including:
  • the terminal device receives a dedicated bearer establishment request sent by the network device through the second network, and the TAU process is used for the terminal device to fall back from the first network to the second network;
  • the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request, where the voice dedicated bearer is used for the terminal device to perform a voice service in the second network.
  • the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request, including:
  • the terminal device sends a dedicated bearer accept message to the network device according to the dedicated bearer establishment request, where the dedicated bearer accept message is used to complete the establishment of the voice dedicated bearer.
  • the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request, including:
  • the terminal device After the TAU is completed, the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request; or,
  • the terminal device Before the TAU is completed, the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request.
  • the terminal device After the TAU is completed, the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request, including:
  • the terminal device stores the dedicated bearer establishment request in a preset storage space
  • the terminal device executes the TAU
  • the terminal device After the TAU is completed, the terminal device acquires the dedicated bearer establishment request in the preset storage space, and establishes a voice dedicated bearer according to the dedicated bearer establishment request.
  • the terminal device before the TAU is completed, the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request, including:
  • the terminal device executes the TAU in parallel, and establishes a voice dedicated bearer according to the dedicated bearer establishment request; or,
  • the terminal device establishes a voice dedicated bearer according to the dedicated bearer establishment request, and executes the TAU after the establishment of the voice dedicated bearer is completed.
  • the terminal device receives the dedicated bearer establishment request sent by the network device through the second network, including:
  • the terminal device Before the terminal device sends the TAU completion message to the network device, the terminal device receives the dedicated bearer establishment request sent by the network device through the second network.
  • the method further includes:
  • the terminal device After the TAU is completed and the establishment of the voice dedicated bearer is completed, the terminal device performs a voice service through the voice dedicated bearer in the second network.
  • the first network is a new air interface NR network
  • the second network is a Long Term Evolution LTE network.
  • an embodiment of the present application provides a communication device, including: a receiving module and a processing module, wherein,
  • the receiving module is used for, in the tracking area update TAU process, the terminal device receives the dedicated bearer establishment request sent by the network device through the second network, and the TAU process is used for the terminal device to fall back from the first network to the the second network;
  • the processing module is configured to establish a voice dedicated bearer according to the dedicated bearer establishment request, where the voice dedicated bearer is used for the terminal device to perform a voice service in the second network.
  • the apparatus further includes a sending module, wherein,
  • the sending module is configured to, according to the dedicated bearer establishment request, send a dedicated bearer accept message to the network device, where the dedicated bearer accept message is used to complete the establishment of the voice dedicated bearer.
  • the processing module is specifically used for:
  • a voice dedicated bearer is established according to the dedicated bearer establishment request.
  • the processing module is specifically used for:
  • the dedicated bearer establishment request is acquired in the preset storage space, and a voice dedicated bearer is established according to the dedicated bearer establishment request.
  • the processing module is specifically used for:
  • a voice dedicated bearer is established according to the dedicated bearer establishment request, and after the establishment of the voice dedicated bearer is completed, the TAU is executed.
  • the sending module is further configured to send a TAU request message to the network device;
  • the receiving module is further configured to, before the sending module sends a TAU completion message to the network device, receive a dedicated bearer establishment request sent by the network device through the second network.
  • the processing module is further used for:
  • a voice service is performed in the second network through the voice dedicated bearer.
  • the first network is a new air interface NR network
  • the second network is a Long Term Evolution LTE network.
  • an embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the first aspects.
  • an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any one of the first aspect The communication method described in item.
  • an embodiment of the present application provides a computer program product, the computer program product can be executed by a processor, and when the computer program product is executed, the above communication method can be implemented.
  • the network device when the terminal device is located in the first network, if the terminal device has a voice call requirement, the network device can control the terminal device to fall back to the second network, and perform voice calls in the EPS fallback manner. call.
  • the terminal device In the process of the terminal device falling back from the first network to the second network, the terminal device needs to perform the TAU process.
  • the establishment request establishes a voice dedicated bearer, so that after switching to the second network, the terminal device can perform voice services according to the voice dedicated bearer, thereby improving the probability of a call through, thereby improving the reliability of communication.
  • FIG. 1 is a schematic diagram of a system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • Terminal equipment It is a device with wireless transceiver function. Terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, industrial control ( Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security Wireless terminal equipment in (transportation safety), wireless terminal equipment in smart city, wireless terminal equipment in smart home (smart home), wearable terminal equipment, etc.
  • a virtual reality virtual reality
  • AR augmented reality
  • industrial control Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security Wireless terminal equipment in (transportation safety), wireless terminal equipment in smart city, wireless terminal equipment in smart home (smart home), wearable terminal equipment, etc.
  • the terminal equipment involved in the embodiments of this application may also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, and remote station , remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE proxy or UE device, etc.
  • Terminal devices can also be stationary or mobile.
  • the network equipment refers to core network equipment, for example, the network equipment may be a mobility management entity (mobility management entity, MME).
  • MME mobility management entity
  • FIG. 1 is a schematic diagram of a system architecture provided by an embodiment of the present application. Please refer to FIG. 1 , including a terminal device 101 , a base station 102 and a base station 103 .
  • the base station 102 may provide the terminal device 101 with the NR network
  • the base station 103 may provide the terminal device 101 with the LTE network.
  • the terminal device 101 When the terminal device 101 is located in the NR network, if the terminal device 101 has a demand for a voice call, the terminal device 101 can fall back from the NR network to the LTE network to perform a voice call.
  • the terminal device in the process of the terminal device falling back from the NR network to the LTE network, the terminal device needs to perform TAU. During the TAU process, the terminal device cannot create a dedicated voice bearer under the LTE network, so that the voice call fails, and further This results in poor communication reliability.
  • an embodiment of the present application proposes a communication method, so that even in the TAU process, a dedicated voice bearer can be established under the LTE network, and further voice calls can be made under the LTE network, which improves the communication efficiency. reliability.
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application. Referring to Figure 2, the method can include:
  • the network device sends a dedicated bearer establishment request to the terminal device through the second network.
  • the terminal device is located in the first network.
  • the first network may be an NR network
  • the second network may be an LTE network.
  • the terminal device is currently in the first network.
  • the terminal device can send a voice call request to the network device.
  • the network device can control the terminal device to perform inter-system switching or perform a redirection process, so that the terminal device switches from the first network to the second network.
  • EPS evolved packet system
  • the terminal device In the process of switching the terminal device from the first network to the second network, the terminal device needs to perform a TAU process, and the TAU process is used to make the terminal device fall back from the first network to the second network.
  • the TAU process includes at least the following steps: the terminal device sends a TAU request message to the network device, the network device sends a TAU response message to the terminal device, and the terminal device sends a TAU completion message to the network device.
  • the terminal device sends a TAU request message to the network device
  • the network device sends a TAU response message to the terminal device
  • the terminal device sends a TAU completion message to the network device.
  • the TAU process it means that the first step in the TAU process has started, and the last step in the TAU process has not been completed.
  • the network device can send a dedicated bearer establishment request to the terminal device through the second network, and the dedicated bearer establishment request is used to request the establishment of a voice dedicated bearer under the second network.
  • the dedicated voice bearer is used to enable the terminal device to perform voice services under the second network.
  • the terminal device establishes a dedicated bearer for voice according to the dedicated bearer establishment request.
  • the terminal device does not process EPS session management (EPS session management, ESM) messages in the TAU process.
  • ESM EPS session management
  • the current protocol has the following provisions: in addition to the additional procedure and the service request procedure, in the EPS mobility management (EPS mobility management, EMM) process, the MME should suspend the transmission of the ESM message. During the service request process, the MME may suspend the transmission of ESM messages.
  • the terminal device after the terminal device receives the dedicated bearer establishment request in the TAU process, the terminal device discards the dedicated bearer establishment request, thereby causing the voice dedicated bearer establishment to fail.
  • the terminal device after the terminal device receives the dedicated bearer establishment request, even if the terminal device is in the TAU process, the terminal device still processes the dedicated bearer establishment request, and then successfully establishes the voice dedicated bearer. After the end of the TAU process, the terminal device can switch to the second network, and perform the voice service in the second network according to the dedicated voice bearer.
  • the terminal device sends a dedicated bearer accept message to the network device according to the dedicated bearer establishment request to complete the establishment of the voice dedicated bearer.
  • the dedicated bearer accept message may be an activate dedicated EPS bearer context accept (activate dedicated EPS bearer context accept) message.
  • the terminal device Before a terminal device performs voice services, the terminal device needs to complete the TAU process and establish a dedicated voice bearer.
  • the terminal device can complete the TAU process and establish a dedicated voice bearer in the following two ways:
  • the first way after the completion of the TAU, the terminal device establishes the voice dedicated bearer according to the dedicated bearer establishment request.
  • the terminal device after the terminal device receives the dedicated bearer establishment request, the terminal device first stores the dedicated bearer establishment request in the preset storage space, the terminal device continues to perform TAU, and after the TAU is completed, the terminal device stores the dedicated bearer establishment request in the The dedicated bearer establishment request is obtained from the preset storage space, and the voice dedicated bearer is established according to the dedicated bearer establishment request.
  • the terminal device After the TAU is completed, the terminal device establishes a voice-specific bearer, so that the influence of the voice-specific bearer on the TAU process can be avoided, so that the terminal device can quickly complete the TAU process, so that the terminal device can quickly switch To the LTE network, the terminal device can quickly perform voice services after establishing a dedicated voice bearer, reduce the user's waiting time, and improve the user's call experience.
  • the terminal device before the completion of the TAU, the terminal device establishes the voice dedicated bearer according to the dedicated bearer establishment request.
  • the terminal device may execute TAU in parallel, and establish a voice dedicated bearer according to the dedicated bearer establishment request.
  • executing TAU in parallel and establishing the voice dedicated bearer according to the dedicated bearer establishment request can enable the terminal device to quickly complete the establishment of the TAU and the voice dedicated bearer, thereby enabling the terminal device to perform voice services more quickly. Reduce the user's waiting time, thereby improving the user's call experience.
  • the terminal device may establish a voice dedicated bearer according to the dedicated bearer establishment request, and execute TAU after the establishment of the voice dedicated bearer is completed.
  • the network device when the terminal device is located in the first network, if the terminal device has a voice call requirement, the network device can control the terminal device to fall back to the second network, and perform a voice call in an EPS fallback manner. In the process of the terminal device falling back from the first network to the second network, the terminal device needs to perform the TAU process.
  • the establishment request establishes a voice dedicated bearer, so that after switching to the second network, the terminal device can perform voice services according to the voice dedicated bearer, thereby improving the probability of a call through, thereby improving the reliability of communication.
  • the terminal device may establish the voice dedicated bearer after the TAU is completed, or the terminal device may also establish the voice dedicated bearer before the TAU is completed. Establish a voice dedicated bearer.
  • the above communication process will be described in detail below by taking the first network as an NR network and the second network as an LTE network as an example by using the embodiments shown in FIG. 3 to FIG. 4 .
  • FIG. 3 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the terminal device establishes a dedicated voice bearer after the TAU is completed.
  • the method can include:
  • the terminal device sends an internet protocol (internet protocol multimedia subsystem, IMS) signaling to a network device.
  • IMS internet protocol multimedia subsystem
  • the terminal device is located in the NR network.
  • the terminal device After the terminal device has a telephone demand, the terminal device sends IMS signaling to the network device to request a voice call.
  • the terminal device is provided with a modem (modem) and an application processor (application processor, AP).
  • modem modem
  • application processor application processor
  • AP application processor
  • the user can operate on the dial interface of the terminal device (for example, enter the phone number and make a call ), after the AP receives the operation input by the user on the terminal device, the AP sends an instruction to the modem, so that the terminal device sends IMS signaling to the network device through the modem.
  • the network device sends a first message to the terminal device.
  • the network device If the network device expects the terminal device to make a voice call through EPS fallback, the network device sends the first message to the terminal device.
  • the first message is used to instruct the terminal device to switch from the NR network to the LTE network.
  • the first message may be at least one of the following: a connection state switching message or a release message.
  • the connected state handover message is used to make the terminal device perform a packet service handover (PSHO) process.
  • PSHO packet service handover
  • the connected state handover message may be a Mobility From NR Command (Mobility From NR Command) from the NR network.
  • Mobility From NR Command Mobility From NR Command
  • the release message is used to cause the terminal device to perform the redirection process.
  • the terminal device sends a TAU request message to the network device according to the first message.
  • the TAU process starts after the terminal device sends the TAU request message to the network device. Before the terminal device sends a TAU completion message to the network device, the terminal device is in the TAU process.
  • the network device sends a dedicated bearer establishment request to the terminal device through the LTE network.
  • the terminal device stores the dedicated bearer establishment request in a preset storage space.
  • the preset storage space may be a preset cache.
  • the network device sends a TAU response message to the terminal device according to the TAU request message.
  • the network device may send a dedicated bearer establishment request to the terminal device after sending the TAU response message to the terminal device. That is, S306 can also be executed first, and then S304-S305 can be executed.
  • the terminal device sends a TAU completion message to the network device according to the TAU response message.
  • the terminal device can access the LTE network.
  • S308 The terminal device obtains a dedicated bearer establishment request in a preset storage space.
  • the terminal device sends an activation dedicated EPS bearer context accept message to the network device according to the dedicated bearer establishment request.
  • the terminal device performs a voice service.
  • the network device can control the terminal device to fall back to the LTE network, and perform a voice call in an EPS fallback manner.
  • the terminal device needs to perform the TAU process. If the terminal device receives the dedicated bearer establishment request sent by the network device in the TAU process, the terminal device can set up the dedicated bearer. Request Store it in the preset storage space, and continue to perform the TAU process. After the TAU is completed, the terminal device can obtain a dedicated bearer establishment request from the preset storage space, and establish a voice dedicated bearer according to the dedicated bearer establishment request. After the completion, the terminal device can access the LTE network, and perform voice services according to the voice dedicated bearer, which improves the probability of calling through, thereby improving the reliability of communication.
  • FIG. 4 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the terminal device establishes a dedicated voice bearer after the TAU is completed.
  • the method can include:
  • the terminal device sends an internet protocol (internet protocol multimedia subsystem, IMS) signaling to a network device.
  • IMS internet protocol multimedia subsystem
  • the network device sends a first message to the terminal device.
  • the first message is used to instruct the terminal device to switch from the NR network to the LTE network.
  • the terminal device sends a TAU request message to the network device according to the first message.
  • the TAU process starts after the terminal device sends the TAU request message to the network device. Before the terminal device sends a TAU completion message to the network device, the terminal device is in the TAU process.
  • the network device sends a dedicated bearer establishment request to the terminal device through the LTE network.
  • the terminal device sends an activation dedicated EPS bearer context accept message to the network device according to the dedicated bearer establishment request.
  • the network device sends a TAU response message to the terminal device according to the TAU request message.
  • the network device may send a dedicated bearer establishment request to the terminal device after sending the TAU response message to the terminal device. That is, S406 can also be executed first, and then S404-S405 can be executed.
  • the terminal device sends a TAU completion message to the network device according to the TAU response message.
  • the terminal device can access the LTE network.
  • S405 and S406-S407 may be executed in parallel, or may be executed sequentially.
  • the terminal device may execute S405 and S406-S407 at the same time, or may execute S405 first, and then execute S406-S407 after executing S405.
  • the terminal device performs a voice service.
  • the network device can control the terminal device to fall back to the LTE network, and perform a voice call in an EPS fallback manner.
  • the terminal device needs to perform the TAU process. If the terminal device receives the dedicated bearer establishment request sent by the network device in the TAU process, the terminal device can establish the request according to the dedicated bearer establishment request. Establish a dedicated voice bearer and continue to perform TAU. After the TAU is completed, the terminal device can access the LTE network and perform voice services according to the dedicated voice bearer, which improves the probability of phone calls and improves the reliability of communication.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication device 10 may be provided in a terminal device.
  • the communication device 10 may include: a receiving module 11 and a processing module 12, wherein,
  • the receiving module 11 is used for, in the tracking area update TAU process, the terminal device receives the dedicated bearer establishment request sent by the network device through the second network, and the TAU process is used for the terminal device to fall back from the first network to the destination device. the second network;
  • the processing module 12 is configured to establish a voice dedicated bearer according to the dedicated bearer establishment request, where the voice dedicated bearer is used for the terminal device to perform a voice service in the second network.
  • the communication apparatus shown in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and details are not repeated here.
  • FIG. 6 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
  • the communication device 10 further includes a sending module 13 , wherein:
  • the sending module 13 is configured to, according to the dedicated bearer establishment request, send a dedicated bearer accept message to the network device, where the dedicated bearer accept message is used to complete the establishment of the voice dedicated bearer.
  • processing module 12 is specifically used for:
  • a voice dedicated bearer is established according to the dedicated bearer establishment request.
  • processing module 12 is specifically used for:
  • the dedicated bearer establishment request is acquired in the preset storage space, and a voice dedicated bearer is established according to the dedicated bearer establishment request.
  • processing module 12 is specifically used for:
  • a voice dedicated bearer is established according to the dedicated bearer establishment request, and after the establishment of the voice dedicated bearer is completed, the TAU is executed.
  • the sending module 13 is further configured to send a TAU request message to the network device;
  • the receiving module 11 is further configured to, before the sending module 13 sends a TAU completion message to the network device, receive a dedicated bearer establishment request sent by the network device through the second network.
  • processing module 12 is further configured to:
  • a voice service is performed in the second network through the voice dedicated bearer.
  • the first network is a new air interface NR network
  • the second network is a Long Term Evolution LTE network.
  • the communication apparatus shown in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and details are not repeated here.
  • FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 20 may include: a transceiver 21 , a memory 22 , and a processor 23 .
  • the transceiver 21 may include: a transmitter and/or a receiver.
  • the transmitter may also be referred to as a transmitter, transmitter, transmit port, or transmit interface, or the like, and the receiver may be referred to as a receiver, receiver, receive port, or receive interface, or the like.
  • the transceiver 21 , the memory 22 , and the processor 23 are connected to each other through a bus 24 .
  • memory 22 for storing program instructions
  • the processor 23 is configured to execute the program instructions stored in the memory, so as to cause the terminal device 20 to execute any one of the communication methods shown above.
  • the terminal device shown in the embodiment of FIG. 7 may execute the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, which will not be repeated here.
  • An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the above communication method.
  • Embodiments of the present application may further provide a computer program product, where the computer program product can be executed by a processor, and when the computer program product is executed, the above communication method can be implemented.
  • the aforementioned program can be stored in a readable memory.
  • the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
  • the term “comprising” and its variants may mean non-limiting inclusion; the term “or” and its variants may mean “and/or”.
  • the terms “first”, “second” and the like in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
  • “plurality” means two or more.
  • “And/or”, which describes the association relationship of the associated objects means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.
  • the character “/" generally indicates that the associated objects are an "or” relationship.

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Abstract

本申请实施例提供一种通信方法、装置及设备，该方法包括：在跟踪区更新TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，所述TAU流程用于所述终端设备从第一网络回落至所述第二网络；所述终端设备根据所述专有承载建立请求建立语音专有承载，所述语音专有承载用于所述终端设备在所述第二网络中进行语音业务。

Description

通信方法、装置及设备
本申请要求于2020年11月26日提交中国专利局、申请号为202011348905.X、申请名称为“通信方法、装置及设备”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
本申请实施例涉及通信技术领域，尤其涉及一种通信方法、装置及设备。
背景技术
终端设备(例如，手机、平板电脑等)可以接入新空口(new radio，NR)网络，也可以接入长期演进(long term evolution，LTE)网络。
在终端设备在NR网络的时，若终端设备具有语音业务的需求，则终端设备可以从NR网络回落至LTE网络，并在LTE网络下进行语音业务。终端设备从NR网络回落至LTE网络的过程中，终端设备需要进行跟踪区更新(tracking area update，TAU)，在TAU流程中，终端设备无法创建在LTE网络下的语音专有承载，使得语音通话失败，进而导致通信的可靠性较差。
发明内容
本申请实施例提供一种通信方法、装置及设备。提高电话呼通的概率，进而提高了通信的可靠性。
第一方面，本申请实施例提供一种通信方法，包括：
在跟踪区更新TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，所述TAU流程用于所述终端设备从第一网络回落至所述第二网络；
所述终端设备根据所述专有承载建立请求建立语音专有承载，所述语音专有承载用于所述终端设备在所述第二网络中进行语音业务。
在一种可能的实施方式中，所述终端设备根据所述专有承载建立请求建立语音专有承载，包括：
所述终端设备根据所述专有承载建立请求，向所述网络设备发送专有承载接受消息，所述专有承载接受消息用于完成建立所述语音专有承载。
在一种可能的实施方式中，所述终端设备根据所述专有承载建立请求建立语音专有承载，包括：
在所述TAU完成之后，所述终端设备根据所述专有承载建立请求建立语音专有承载；或者，
在所述TAU完成之前，所述终端设备根据所述专有承载建立请求建立语音专有承载。
在一种可能的实施方式中，在所述TAU完成之后，所述终端设备根据所述专有承 载建立请求建立语音专有承载，包括：
所述终端设备在预设存储空间中存储所述专有承载建立请求；
所述终端设备执行所述TAU；
所述终端设备在所述TAU完成之后，在所述预设存储空间中获取所述专有承载建立请求，并根据所述专有承载建立请求建立语音专有承载。
在一种可能的实施方式中，在所述TAU完成之前，所述终端设备根据所述专有承载建立请求建立语音专有承载，包括：
所述终端设备并行执行所述TAU、以及根据所述专有承载建立请求建立语音专有承载；或者，
所述终端设备根据所述专有承载建立请求建立语音专有承载，并在所述语音专有承载建立完成之后，执行所述TAU。
在一种可能的实施方式中，在TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，包括：
所述终端设备向所述网络设备发送TAU请求消息；
在所述终端设备向所述网络设备发送TAU完成消息之前，终端设备通过第二网络接收网络设备发送的专有承载建立请求。
在一种可能的实施方式中，所述方法还包括：
在所述TAU完成、以及所述语音专有承载建立完成之后，所述终端设备在所述第二网络中通过所述语音专有承载进行语音业务。
在一种可能的实施方式中，所述第一网络为新空口NR网络，所述第二网络为长期演进LTE网络。
第二方面，本申请实施例提供一种通信装置，包括：接收模块和处理模块，其中，
所述接收模块用于，在跟踪区更新TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，所述TAU流程用于所述终端设备从第一网络回落至所述第二网络；
所述处理模块用于，根据所述专有承载建立请求建立语音专有承载，所述语音专有承载用于所述终端设备在所述第二网络中进行语音业务。
在一种可能的实施方式中，所述装置还包括发送模块，其中，
所述发送模块用于，根据所述专有承载建立请求，向所述网络设备发送专有承载接受消息，所述专有承载接受消息用于完成建立所述语音专有承载。
在一种可能的实施方式中，所述处理模块具体用于：
在所述TAU完成之后，根据所述专有承载建立请求建立语音专有承载；或者，
在所述TAU完成之前，根据所述专有承载建立请求建立语音专有承载。
在一种可能的实施方式中，所述处理模块具体用于：
在预设存储空间中存储所述专有承载建立请求；
执行所述TAU；
在所述TAU完成之后，在所述预设存储空间中获取所述专有承载建立请求，并根据所述专有承载建立请求建立语音专有承载。
在一种可能的实施方式中，所述处理模块具体用于：
并行执行所述TAU、以及根据所述专有承载建立请求建立语音专有承载；或者，
根据所述专有承载建立请求建立语音专有承载，并在所述语音专有承载建立完成之后，执行所述TAU。
在一种可能的实施方式中，所述发送模块还用于，向所述网络设备发送TAU请求消息；
所述接收模块还用于，在所述发送模块向所述网络设备发送TAU完成消息之前，通过第二网络接收网络设备发送的专有承载建立请求。
在一种可能的实施方式中，所述处理模块还用于：
在所述TAU完成、以及所述语音专有承载建立完成之后，在所述第二网络中通过所述语音专有承载进行语音业务。
在一种可能的实施方式中，所述第一网络为新空口NR网络，所述第二网络为长期演进LTE网络。
第三方面，本申请实施例提供一种终端设备，包括：收发器、处理器、存储器；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如第一方面任一项所述的通信方法。
第四方面，本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现第一方面任一项所述的通信方法。
第五方面，本申请实施例提供一种计算机程序产品，该计算机程序产品可以由处理器执行，在计算机程序产品被执行时，可实现上述通信方法。
本申请实施例提供的通信方法、装置及设备，在终端设备位于第一网络时，若终端设备具有语音通话需求，网络设备可以控制终端设备回落至第二网络，并以EPS回落的方式进行语音通话。在终端设备从第一网络回落至第二网络的过程中，终端设备需要进行TAU流程，若终端设备在TAU流程中接收到网络设备发送的专有承载建立请求，则终端设备根据该专有承载建立请求建立语音专有承载，这样，终端设备在切换至第二网络之后，可以根据该语音专有承载进行语音业务，提高电话呼通的概率，进而提高了通信的可靠性。
附图说明
图1为本申请实施例提供的一种系统架构的示意图；
图2为本申请实施例提供的一种通信方法的流程示意图；
图3为本申请实施例提供的另一种通信方法的流程示意图；
图4为本申请实施例提供的另一种通信方法的流程示意图；
图5为本申请实施例提供的一种通信装置的结构示意图；
图6为本申请实施例提供的另一种通信装置的结构示意图；
图7为本申请实施例提供的一种终端设备的结构示意图。
具体实施方式
为了便于理解，首先对本申请实施例所涉及的概念进行说明。
终端设备：是一种具有无线收发功能的设备。终端设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、车载终端设备、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备、可穿戴终端设备等。本申请实施例所涉及的终端设备还可以称为终端、用户设备(user equipment，UE)、接入终端设备、车载终端、工业控制终端、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、无线通信设备、UE代理或UE装置等。终端设备也可以是固定的或者移动的。
网络设备：网络设备是指核心网设备，例如，网络设备可以为移动性管理网元(mobil ity management entity，MME)。
下面，结合图1，对本申请实施例所适用的系统架构进行说明。
图1为本申请实施例提供的一种系统架构的示意图。请参见图1，包括终端设备101、基站102和基站103。基站102可以向终端设备101提供NR网络，基站103可以向终端设备101提供LTE网络。
当终端设备101位于NR网络时，若终端设备101具有语音通话的需求，则终端设备101可以从NR网络回落至LTE网络进行语音通话。
在相关技术中，在终端设备从NR网络回落至LTE网络的过程中，终端设备需要进行TAU，在TAU流程中，终端设备无法创建在LTE网络下的语音专有承载，使得语音通话失败，进而导致通信的可靠性较差。
为了解决该技术问题，本申请实施例提出一种通信方法，使得即使在TAU流程中，也可以实现在LTE网络下建立语音专有承载，进而实现在LTE网络下进行语音通话，提高了通信的可靠性。
下面，通过具体实施例对本申请所示的技术方案进行详细说明。需要说明的是，下面几个实施例可以单独存在，也可以相互结合，对于相同或相似的内容，在不同的实施例中不再重复说明。
图2为本申请实施例提供的一种通信方法的流程示意图。请参见图2，该方法可以包括：
S201、在TAU流程中，网络设备通过第二网络向终端设备发送专有承载建立请求。
在当前时刻，终端设备位于第一网络。第一网络可以为NR网络，第二网络可以为LTE网络。
终端设备当前处于第一网络中，在终端设备具有语音通话需求时，终端设备可以向网络设备发送语音通话请求，若网络设备希望终端设备通过演进的分组系统(evolved packet system，EPS)回落(fallback)的方式进行语音通话，则网络设 备可以控制终端设备进行异系统切换或者执行重定向流程，以使终端设备从第一网络切换至第二网络。网络设备可以是指
在终端设备从第一网络切换至第二网络的过程中，终端设备需要进行TAU流程，TAU流程用于使得终端设备从第一网络回落至第二网络。TAU流程至少包括如下步骤：终端设备向网络设备发送TAU请求消息，网络设备向终端设备发送TAU响应消息，终端设备向网络设备发送TAU完成消息。其中，在TAU流程中是指，TAU流程中的第一个步骤已经开始，且TAU流程中的最后一个步骤未完成。
由于网络设备希望终端设备以EPS回落的方式进行语音通话，网络设备可以通过第二网络向终端设备发送专有承载建立请求，专有承载建立请求用于请求建立第二网络下的语音专有承载，语音专有承载用于使得终端设备在第二网络下进行语音业务。
S202、终端设备根据专有承载建立请求建立语音专有承载。
在相关协议中规定，终端设备在TAU流程中，不处理EPS会话管理(EPS session management，ESM)消息。例如，目前协议有如下规定：除附加程序和服务请求程序外，在EPS移动性管理(EPS mobility management，EMM)过程中，MME应暂停ESM消息的传输。在服务请求过程中，MME可以暂停ESM消息的传输。
因此，在相关技术中，终端设备在TAU流程中接收到专有承载建立请求之后，终端设备丢弃该专有承载建立请求，进而导致语音专有承载建立失败。
在本申请实施例中，在终端设备接收到专有承载建立请求之后，即使终端设备在TAU流程中，终端设备依然对专有承载建立请求进行处理，进而成功建立语音专有承载，这样，在TAU流程结束之后，终端设备可以切换至第二网络，并在第二网络中根据语音专有承载进行语音业务。终端设备根据专有承载建立请求，向网络设备发送专有承载接受消息，以完成建立语音专有承载。专有承载接受消息可以为激活专用EPS承载上下文接受(activate dedicated EPS bearer context accept)消息。
在终端设备进行语音业务之前，终端设备需要完成TAU流程，以及建立语音专有承载，终端设备可以通过如下两种方式完成TAU流程以及建立语音专有承载：
第一种方式：在TAU完成之后，终端设备根据专有承载建立请求建立语音专有承载。
在该种方式中，终端设备在接收到专有承载建立请求之后，终端设备先在预设存储空间中存储该专有承载建立请求，终端设备继续进行TAU，并在TAU完成之后，终端设备在预设存储空间中获取该专有承载建立请求，并根据该专有承载建立请求建立语音专有承载。
在该种方式中，在TAU完成之后，终端设备再建立语音专有承载，这样，可以避免语音专有承载对TAU流程的影响，使得终端设备可以快速完成TAU流程，以使终端设备可以快速切换至LTE网络，进而使得终端设备在建立完语音专有承载之后，可以较快的进行语音业务，减少用户的等待时间，进而提高用户的通话体验。
第二种方式：在TAU完成之前，终端设备根据专有承载建立请求建立语音专有承载。
可选的，终端设备可以并行执行TAU、以及根据专有承载建立请求建立语音专有承载。
在该种方式中，并行执行TAU、以及根据专有承载建立请求建立语音专有承载，可以使得终端设备快速完成TAU以及语音专有承载的建立，进而使得终端设备可以较快的进行语音业务，减少用户的等待时间，进而提高用户的通话体验。
可选的，终端设备可以根据专有承载建立请求建立语音专有承载，并在语音专有承载建立完成之后，再执行TAU。
本申请实施例提供的通信方法，在终端设备位于第一网络时，若终端设备具有语音通话需求，网络设备可以控制终端设备回落至第二网络，并以EPS回落的方式进行语音通话。在终端设备从第一网络回落至第二网络的过程中，终端设备需要进行TAU流程，若终端设备在TAU流程中接收到网络设备发送的专有承载建立请求，则终端设备根据该专有承载建立请求建立语音专有承载，这样，终端设备在切换至第二网络之后，可以根据该语音专有承载进行语音业务，提高电话呼通的概率，进而提高了通信的可靠性。
在上述任意一个实施例的基础上，终端设备在TAU流程中接收到专有承载建立请求之后，终端设备可以在TAU完成之后，再建立语音专有承载，或者，终端设备也可以在TAU完成之前建立语音专有承载。下面，通过图3-图4所示的实施例，以第一网络为NR网络，第二网络为LTE网络为例，对上述通信过程进行详细说明。
图3为本申请实施例提供的另一种通信方法的流程示意图。在图3所示的实施例中，终端设备在TAU完成之后，再建立语音专有承载。请参见图3，该方法可以包括：
S301、终端设备向网络设备发送互联网协议(internet protocol multimedia subsystem，IMS)信令。
在当前时刻，终端设备位于NR网络中。
终端设备在具有电话需求之后，终端设备向网络设备发送IMS信令，以请求进行语音通话。
终端设备中设置有调制解调器(modem)和应用处理器(application processor，AP)，当用户需要通过终端设备拨打电话时，用户可以在终端设备的拨号界面进行操作(例如，输入电话号码，并拨打电话)，AP接收到用户在终端设备输入的操作之后，AP向调制解调器发送指令，以使终端设备通过调制解调器向网络设备发送IMS信令。
S302、网络设备向终端设备发送第一消息。
网络设备期望终端设备通过EPS回落方式进行语音通话，则网络设备向终端设备发送第一消息。
第一消息用于指示终端设备从NR网络切换至LTE网络。第一消息可以为如下至少一种：连接态切换消息或者释放(release)消息。
连接态切换消息用于使得终端设备执行分组业务切换(packet service handover，PSHO)流程，例如，连接态切换消息可以为从NR网络的移动指令(Mobility From NR Command)。
释放消息用于使得终端设备执行重定向流程。
S303、终端设备根据第一消息，向网络设备发送TAU请求消息。
需要说明的是，在终端设备向网络设备发送TAU请求消息之后，TAU流程开始。在终端设备向网络设备发送TAU完成消息之前，终端设备均处于TAU流程中。
S304、网络设备通过LTE网络向终端设备发送专有承载建立请求。
S305、终端设备在预设存储空间中存储专有承载建立请求。
例如，预设存储空间可以为预设缓存。
S306、网络设备根据TAU请求消息，向终端设备发送TAU响应消息。
可选的，网络设备可以向终端设备发送TAU响应消息之后，再向终端设备发送专有承载建立请求。即，还可以先执行S306，再执行S304-S305。
S307、终端设备根据TAU响应消息，向网络设备发送TAU完成消息。
需要说明的是，通过S303、S306-S307所示的步骤，TAU完成，在TAU完成之后，终端设备可以接入LTE网络。
S308、终端设备在预设存储空间中获取专有承载建立请求。
S309、终端设备根据专有承载建立请求，向网络设备发送激活专用EPS承载上下文接受消息。
S310、终端设备进行语音业务。
在图3所示的实施例中，在终端设备位于NR网络时，若终端设备具有语音通话需求，网络设备可以控制终端设备回落至LTE网络，并以EPS回落的方式进行语音通话。在终端设备从NR网络回落至LTE网络的过程中，终端设备需要进行TAU流程，若终端设备在TAU流程中接收到网络设备发送的专有承载建立请求，终端设备可以将该专有承载建立请求存储至预设存储空间，并继续执行TAU流程，在TAU完成之后，终端设备可以从预设存储空间中获取专有承载建立请求，并根据该专有承载建立请求建立语音专有承载，在TAU完成之后，终端设备可以接入LTE网络，并根据语音专有承载进行语音业务，提高电话呼通的概率，进而提高了通信的可靠性。
图4为本申请实施例提供的另一种通信方法的流程示意图。在图4所示的实施例中，终端设备在TAU完成之后，再建立语音专有承载。请参见图4，该方法可以包括：
S401、终端设备向网络设备发送互联网协议(internet protocol multimedia subsystem，IMS)信令。
S402、网络设备向终端设备发送第一消息。
第一消息用于指示终端设备从NR网络切换至LTE网络。
S403、终端设备根据第一消息，向网络设备发送TAU请求消息。
需要说明的是，在终端设备向网络设备发送TAU请求消息之后，TAU流程开始。在终端设备向网络设备发送TAU完成消息之前，终端设备均处于TAU流程中。
S404、网络设备通过LTE网络向终端设备发送专有承载建立请求。
需要说明的是，S401-S404的执行过程可以参见S301-S304的执行过程，此处不再进行赘述。
S405、终端设备根据专有承载建立请求，向网络设备发送激活专用EPS承载上下文接受消息。
S406、网络设备根据TAU请求消息，向终端设备发送TAU响应消息。
可选的，网络设备可以向终端设备发送TAU响应消息之后，再向终端设备发送专有承载建立请求。即，还可以先执行S406，再执行S404-S405。
S407、终端设备根据TAU响应消息，向网络设备发送TAU完成消息。
需要说明的是，通过S403、S406-S407所示的步骤，TAU完成，在TAU完成之后，终端设备可以接入LTE网络。
需要说明的是，S405与S406-S407可以并行执行，也可以顺序执行。例如，终端设备可以同时执行S405与S406-S407，也可以先执行S405，在执行完S405之后，再执行S406-S407。
S408、终端设备进行语音业务。
在图4所示的实施例中，在终端设备位于NR网络时，若终端设备具有语音通话需求，网络设备可以控制终端设备回落至LTE网络，并以EPS回落的方式进行语音通话。在终端设备从NR网络回落至LTE网络的过程中，终端设备需要进行TAU流程，若终端设备在TAU流程中接收到网络设备发送的专有承载建立请求，终端设备可以根据该专有承载建立请求建立语音专有承载，并继续执行TAU，在TAU完成之后，终端设备可以接入LTE网络，并根据语音专有承载进行语音业务，提高电话呼通的概率，进而提高了通信的可靠性。
图5为本申请实施例提供的一种通信装置的结构示意图。该通信装置10可以设置在终端设备中。请参见图5，该通信装置10可以包括：接收模块11和处理模块12，其中，
所述接收模块11用于，在跟踪区更新TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，所述TAU流程用于所述终端设备从第一网络回落至所述第二网络；
所述处理模块12用于，根据所述专有承载建立请求建立语音专有承载，所述语音专有承载用于所述终端设备在所述第二网络中进行语音业务。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图6为本申请实施例提供的另一种通信装置的结构示意图。在图5所示实施例的基础上，请参见图6，通信装置10还包括发送模块13，其中，
所述发送模块13用于，根据所述专有承载建立请求，向所述网络设备发送专有承载接受消息，所述专有承载接受消息用于完成建立所述语音专有承载。
在一种可能的实施方式中，所述处理模块12具体用于：
在所述TAU完成之后，根据所述专有承载建立请求建立语音专有承载；或者，
在所述TAU完成之前，根据所述专有承载建立请求建立语音专有承载。
在一种可能的实施方式中，所述处理模块12具体用于：
在预设存储空间中存储所述专有承载建立请求；
执行所述TAU；
在所述TAU完成之后，在所述预设存储空间中获取所述专有承载建立请求，并根据所述专有承载建立请求建立语音专有承载。
在一种可能的实施方式中，所述处理模块12具体用于：
并行执行所述TAU、以及根据所述专有承载建立请求建立语音专有承载；或者，
根据所述专有承载建立请求建立语音专有承载，并在所述语音专有承载建立完成之后，执行所述TAU。
在一种可能的实施方式中，所述发送模块13还用于，向所述网络设备发送TAU请求消息；
所述接收模块11还用于，在所述发送模块13向所述网络设备发送TAU完成消息之前，通过第二网络接收网络设备发送的专有承载建立请求。
在一种可能的实施方式中，所述处理模块12还用于：
在所述TAU完成、以及所述语音专有承载建立完成之后，在所述第二网络中通过所述语音专有承载进行语音业务。
在一种可能的实施方式中，所述第一网络为新空口NR网络，所述第二网络为长期演进LTE网络。
本申请实施例所示的通信装置可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
图7为本申请实施例提供的一种终端设备的结构示意图。请参见图7，终端设备20可以包括：收发器21、存储器22、处理器23。收发器21可包括：发射器和/或接收器。该发射器还可称为发送器、发射机、发送端口或发送接口等类似描述，接收器还可称为接收器、接收机、接收端口或接收接口等类似描述。示例性地，收发器21、存储器22、处理器23，各部分之间通过总线24相互连接。
存储器22用于存储程序指令；
处理器23用于执行该存储器所存储的程序指令，用以使得终端设备20执行上述任一所示的通信方法。
图7实施例所示的终端设备可以执行上述方法实施例所示的技术方案，其实现原理以及有益效果类似，此处不再进行赘述。
本申请实施例提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现上述通信方法。
本申请实施例还可提供一种计算机程序产品，该计算机程序产品可以由处理器执行，在计算机程序产品被执行时，可实现上述通信方法。
实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一可读取存储器中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储器(存储介质)包括：只读存储器(英文：read-only memory，缩写：ROM)、RAM、快闪存储器、硬盘、固态硬盘、磁带(英文：magnetic tape)、软盘(英文：floppy disk)、光盘(英文：optical disc)及其任意组合。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理单元执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括 指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。
在本申请中，术语“包括”及其变形可以指非限制性的包括；术语“或”及其变形可以指“和/或”。本本申请中术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。本申请中，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。

Claims (18)

  1. 一种通信方法，其特征在于，包括：
    在跟踪区更新TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，所述TAU流程用于所述终端设备从第一网络回落至所述第二网络；
    所述终端设备根据所述专有承载建立请求建立语音专有承载，所述语音专有承载用于所述终端设备在所述第二网络中进行语音业务。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备根据所述专有承载建立请求建立语音专有承载，包括：
    所述终端设备根据所述专有承载建立请求，向所述网络设备发送专有承载接受消息，所述专有承载接受消息用于完成建立所述语音专有承载。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备根据所述专有承载建立请求建立语音专有承载，包括：
    在所述TAU完成之后，所述终端设备根据所述专有承载建立请求建立语音专有承载；或者，
    在所述TAU完成之前，所述终端设备根据所述专有承载建立请求建立语音专有承载。
  4. 根据权利要求3所述的方法，其特征在于，在所述TAU完成之后，所述终端设备根据所述专有承载建立请求建立语音专有承载，包括：
    所述终端设备在预设存储空间中存储所述专有承载建立请求；
    所述终端设备执行所述TAU；
    所述终端设备在所述TAU完成之后，在所述预设存储空间中获取所述专有承载建立请求，并根据所述专有承载建立请求建立语音专有承载。
  5. 根据权利要求3所述的方法，其特征在于，在所述TAU完成之前，所述终端设备根据所述专有承载建立请求建立语音专有承载，包括：
    所述终端设备并行执行所述TAU、以及根据所述专有承载建立请求建立语音专有承载；或者，
    所述终端设备根据所述专有承载建立请求建立语音专有承载，并在所述语音专有承载建立完成之后，执行所述TAU。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，在TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，包括：
    所述终端设备向所述网络设备发送TAU请求消息；
    在所述终端设备向所述网络设备发送TAU完成消息之前，终端设备通过第二网络接收网络设备发送的专有承载建立请求。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述方法还包括：
    在所述TAU完成、以及所述语音专有承载建立完成之后，所述终端设备在所述第二网络中通过所述语音专有承载进行语音业务。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述第一网络为新空口NR网络，所述第二网络为长期演进LTE网络。
  9. 一种通信装置，其特征在于，包括：接收模块和处理模块，其中，
    所述接收模块用于，在跟踪区更新TAU流程中，终端设备通过第二网络接收网络设备发送的专有承载建立请求，所述TAU流程用于所述终端设备从第一网络回落至所述第二网络；
    所述处理模块用于，根据所述专有承载建立请求建立语音专有承载，所述语音专 有承载用于所述终端设备在所述第二网络中进行语音业务。
  10. 根据权利要求9所述的装置，其特征在于，所述装置还包括发送模块，其中，
    所述发送模块用于，根据所述专有承载建立请求，向所述网络设备发送专有承载接受消息，所述专有承载接受消息用于完成建立所述语音专有承载。
  11. 根据权利要求9或10所述的装置，其特征在于，所述处理模块具体用于：
    在所述TAU完成之后，根据所述专有承载建立请求建立语音专有承载；或者，
    在所述TAU完成之前，根据所述专有承载建立请求建立语音专有承载。
  12. 根据权利要求11所述的装置，其特征在于，所述处理模块具体用于：
    在预设存储空间中存储所述专有承载建立请求；
    执行所述TAU；
    在所述TAU完成之后，在所述预设存储空间中获取所述专有承载建立请求，并根据所述专有承载建立请求建立语音专有承载。
  13. 根据权利要求11所述的装置，其特征在于，所述处理模块具体用于：
    并行执行所述TAU、以及根据所述专有承载建立请求建立语音专有承载；或者，
    根据所述专有承载建立请求建立语音专有承载，并在所述语音专有承载建立完成之后，执行所述TAU。
  14. 根据权利要求9-13任一项所述的装置，其特征在于，
    所述发送模块还用于，向所述网络设备发送TAU请求消息；
    所述接收模块还用于，在所述发送模块向所述网络设备发送TAU完成消息之前，通过第二网络接收网络设备发送的专有承载建立请求。
  15. 根据权利要求9-14任一项所述的装置，其特征在于，所述处理模块还用于：
    在所述TAU完成、以及所述语音专有承载建立完成之后，在所述第二网络中通过所述语音专有承载进行语音业务。
  16. 根据权利要求9-15任一项所述的装置，其特征在于，所述第一网络为新空口NR网络，所述第二网络为长期演进LTE网络。
  17. 一种终端设备，其特征在于，包括：收发器、处理器、存储器；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求1至8任一项所述的通信方法。
  18. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现权利要求1至8任一项所述的通信方法。
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