CN114615635A - Voice service method and device based on different network roaming - Google Patents

Voice service method and device based on different network roaming Download PDF

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Publication number
CN114615635A
CN114615635A CN202210364889.6A CN202210364889A CN114615635A CN 114615635 A CN114615635 A CN 114615635A CN 202210364889 A CN202210364889 A CN 202210364889A CN 114615635 A CN114615635 A CN 114615635A
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China
Prior art keywords
terminal
network
voice service
roaming
home
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Inventor
于金杨
毛聪杰
李鹏
胡春雷
谢伟良
赵勇
林平平
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN202210364889.6A priority Critical patent/CN114615635A/en
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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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • 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
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosure relates to a voice service method and device based on different network roaming and a computer storage medium, and relates to the technical field of communication. The voice service method based on the different network roaming is executed by the visiting 5G network and comprises the following steps: responding to the access or switching of a 5G terminal into the visit 5G network, and judging whether the 5G terminal belongs to a flooding terminal; under the condition that the 5G terminal belongs to the flooding terminal, judging whether the 5G terminal supports a new air interface voice service (VoNR); and controlling the 5G terminal to access a home 4G network under the condition that the 5G terminal does not support the VoNR so that the 5G terminal obtains voice service in a roaming area. According to the method and the device, the 5G terminal which does not support VoNR can obtain voice service in the roaming area, and the voice service quality in the different network roaming scene is improved.

Description

Voice service method and device based on different network roaming
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for voice service based on heterogeneous roaming, and a computer-readable storage medium.
Background
In the related art, in a heterogeneous roaming scenario, VoNR (Voice Over New Radio) is used as a solution for Voice services in a 5G network.
Disclosure of Invention
In the related art, some 5G terminals do not support VoNR, and when the 5G terminals in the stock are in a roaming area, voice service cannot be obtained on a visited 5G network corresponding to the roaming area.
In view of the above technical problems, the present disclosure provides a solution, which enables a 5G terminal that does not support VoNR to obtain voice service in a roaming area, and improves voice service quality in a heterogeneous roaming scenario.
According to a first aspect of the present disclosure, there is provided a method for a voice service based on heterogeneous roaming, performed by a visited 5G network, the method including: responding to the access or switching of a 5G terminal into the visit 5G network, and judging whether the 5G terminal belongs to a flooding terminal; under the condition that the 5G terminal belongs to the flooding terminal, judging whether the 5G terminal supports a new air interface voice service (VoNR); and controlling the 5G terminal to access a home 4G network under the condition that the 5G terminal does not support the VoNR so that the 5G terminal obtains voice service in a roaming area.
In some embodiments, the determining whether the 5G terminal belongs to the roaming terminal comprises: acquiring a public land mobile network PLMN selected by the 5G terminal; and judging whether the 5G terminal belongs to the flooding terminal or not according to the PLMN selected by the 5G terminal.
In some embodiments, obtaining the public land mobile network PLMN selected by the 5G terminal comprises: and under the condition that the 5G terminal is randomly accessed to the visit 5G network, acquiring the PLMN selected by the 5G terminal according to a message which is sent by the 5G terminal in the random access process and indicates that the radio resource control step is completed.
In some embodiments, the obtaining the PLMN selected by the 5G terminal according to the message indicating that the radio resource control step is completed and sent by the 5G terminal in the random access process includes: and acquiring the PLMN selected by the 5G terminal according to the field indicating the selected PLMN in the message indicating the completion of the radio resource control step.
In some embodiments, obtaining the public land mobile network PLMN selected by the 5G terminal comprises: and under the condition that the 5G terminal is switched from a home 5G network to the visit 5G network, acquiring the PLMN selected by the 5G terminal according to a switching request message sent by an AMF network element corresponding to the visit 5G network.
In some embodiments, acquiring the PLMN selected by the 5G terminal according to the handover request message sent by the AMF network element corresponding to the visited 5G network includes: and acquiring the PLMN selected by the 5G terminal according to a PLMN service field in the switching request message.
In some embodiments, the determining whether the 5G terminal supports a voice service over new air interface VoNR includes: acquiring terminal capability information of the 5G terminal; and judging whether the 5G terminal supports VoNR or not according to the terminal capability information of the 5G terminal.
In some embodiments, the obtaining the terminal capability information of the 5G terminal includes: and under the condition that the 5G terminal randomly accesses the visit 5G network, receiving the terminal capability information reported by the 5G terminal in the random access process.
In some embodiments, the obtaining the terminal capability information of the 5G terminal includes: receiving terminal capability information of the 5G terminal transferred by a home 5G network in case that the 5G terminal is switched from the home 5G network to the visited 5G network.
In some embodiments, determining whether the 5G terminal supports VoNR comprises: judging whether the 5G terminal supports VoNR according to a field indicating whether the 5G terminal supports VoNR in the terminal capability information, wherein the 5G terminal supports VoNR under the condition that the field indicating whether the 5G terminal supports VoNR is a first value; and in the case that the field indicating whether the VoNR is supported is the second value, the 5G terminal does not support VoNR.
In some embodiments, controlling the 5G terminal to access the home 4G network comprises: and under the condition that the 5G terminal randomly accesses the visit 5G network, sending the frequency point information of the attributive 4G network to the 5G terminal, wherein the frequency point information of the attributive 4G network is used for triggering the terminal to be redirected to the attributive 4G network.
In some embodiments, controlling the 5G terminal to access the home 4G network comprises: allowing the 5G terminal to switch into the visited 5G network when the 5G terminal is switched from a home 5G network to the visited 5G network; and under the condition that the 5G terminal is successfully switched into the visit 5G, sending frequency point information of an attributive 4G network to the 5G terminal, wherein the frequency point information of the attributive 4G network is used for triggering the 5G terminal to be redirected to the attributive 4G network.
In some embodiments, sending the frequency point information of the home 4G network to the 5G terminal includes: and sending the frequency point information of the attributive 4G network to the 5G terminal through a message for releasing Radio Resource Control (RRC) connection or suspending the RRC connection.
In some embodiments, controlling the 5G terminal to access the home 4G network comprises: under the condition that the 5G terminal is switched to the visit 5G network from a home 5G network, refusing the 5G terminal to switch into the visit 5G network; acquiring a home 4G neighboring cell corresponding to a home 5G cell from a home 5G network; and controlling the 5G terminal to be switched to the attributive 4G adjacent area.
According to a second aspect of the present disclosure, there is provided a voice service apparatus based on heterogeneous roaming, deployed in a visited 5G network, including: the first judging module is configured to respond to the access or switching of a 5G terminal into the visit 5G network and judge whether the 5G terminal belongs to a flooding terminal; the second judging module is configured to judge whether the 5G terminal supports a voice service VoNR of a new air interface or not under the condition that the 5G terminal belongs to an roaming terminal; a control module configured to control the 5G terminal to access a home 4G network so that the 5G terminal obtains a voice service in a roaming area, in case that the 5G terminal does not support the VoNR.
According to a third aspect of the present disclosure, there is provided a voice service apparatus based on heterogeneous roaming, including: a memory; and a processor coupled to the memory, the processor configured to execute the method for voice services based on heterogeneous roaming according to any of the above embodiments based on the instructions stored in the memory.
According to a fourth aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method for voice services based on heterogeneous roaming according to any of the above embodiments.
In the embodiment, the 5G terminal which does not support the VoNR can obtain the voice service in the roaming area, so that the voice service quality in the heterogeneous network roaming scenario is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
fig. 1 is a flowchart illustrating a voice service method based on heterogeneous roaming according to some embodiments of the present disclosure;
fig. 2 is a schematic diagram illustrating network coverage in a home region and a roaming region in accordance with some embodiments of the present disclosure;
fig. 3 is a block diagram illustrating a voice service apparatus based on heterogeneous roaming according to some embodiments of the present disclosure;
fig. 4 is a block diagram illustrating a voice service apparatus based on heterogeneous roaming according to further embodiments of the present disclosure;
FIG. 5 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a flowchart illustrating a voice service method based on heterogeneous roaming according to some embodiments of the present disclosure.
As shown in fig. 1, the voice service method based on the heterogeneous roaming includes steps S110 to S130. The voice service method is performed by the visited 5G network. In some embodiments, the voice service method is performed by a visited 5G network base station in a visited 5G network.
In step S110, in response to the 5G terminal accessing or switching into the visited 5G network, it is determined whether the 5G terminal belongs to the roaming terminal.
In some embodiments, the step S110 may be implemented as follows.
First, a PLMN (Public Land Mobile Network) selected by the 5G terminal is acquired.
In some embodiments, in a case where the 5G terminal randomly accesses the visited 5G network, the PLMN selected by the 5G terminal is acquired according to a message indicating that the radio resource control step is completed, which is sent by the 5G terminal in a random access process. For example, the message indicating that the radio resource control procedure is completed is an RRCSetupComplete message.
In some embodiments, the PLMN selected by the 5G terminal may be acquired according to a field indicating the selected PLMN in the message indicating that the radio resource control step is completed. For example, the field indicating the selected PLMN is a selected PLMN-Identity field.
In other embodiments, in a case where the 5G terminal is switched from the home 5G network to the visited 5G network, the PLMN selected by the 5G terminal is acquired according to a handover request message sent by an AMF network element corresponding to the visited 5G network. For example, the Handover Request message is a Handover Request message.
In some embodiments, the PLMN selected by the 5G terminal may be obtained according to a PLMN service field in the handover request message. For example, the PLMN service field is a serving PLMN field. In some embodiments, the serving PLMN field is contained in the Mobility recovery List field.
And then, judging whether the 5G terminal belongs to the roaming terminal or not according to the PLMN selected by the 5G terminal.
In some embodiments, in the case that the 5G terminal does not belong to the flooding terminal, the 5G terminal accesses or switches into the visited 5G network.
In step S120, in the case where the 5G terminal belongs to the flooding terminal, it is determined whether the 5G terminal supports VoNR.
In some embodiments, step S120 may be implemented as follows.
First, terminal capability information of the 5G terminal is acquired.
In some embodiments, in the case that the 5G terminal randomly accesses the visited 5G network, the terminal capability information reported by the 5G terminal in the random access process is received.
In further embodiments, terminal capability information of the 5G terminal communicated by the home 5G network is received in the event of a handover of the 5G terminal from the home 5G network to the visited 5G network. For example, the home 5G network side transmits the terminal capability information to the core network of the visited 5G network side through the core network of the home 5G network side, and further, the terminal capability information is transmitted to the base station of the visited 5G network by the core network of the visited 5G network side.
And then, judging whether the 5G terminal supports VoNR or not according to the terminal capability information of the 5G terminal.
In some embodiments, whether the 5G terminal supports VoNR is determined according to a field in the terminal capability information indicating whether VoNR is supported. In the case where the field indicating whether or not VoNR is supported is a first value, the 5G terminal supports VoNR. And in the case that the field indicating whether or not the VoNR is supported is the second value, the 5G terminal does not support the VoNR. For example, the field indicating whether or not VoNR is supported is the voiceOverNR field. In some embodiments, the voiceOverNR field is located in the IMS-parameters frx-Diff field.
In some embodiments, the first value is "supported" (also referred to as "supported") and the second value is "not supported".
In some embodiments, in the case where the 5G terminal supports VoNR, the 5G terminal accesses or switches into the visited 5G network.
In step S130, in case that the 5G terminal does not support VoNR, the 5G terminal is controlled to access the home 4G network so that the 5G terminal obtains a voice service in the roaming area. That is, voice and data services of the 5G terminal in the roaming area are directly provided by the home 4G network.
In some embodiments, the base station of the visited 5G network informs the base station of the home 4G network that the 5G terminal is allowed access.
In some embodiments, in the case that the 5G terminal randomly accesses the visited 5G network, the frequency point information of the home 4G network is sent to the 5G terminal. And the frequency point information of the home 4G network is used for triggering the terminal to be redirected to the home 4G network.
In other embodiments, in the case that the 5G terminal is handed over from the home 5G network to the visited 5G network, the 5G terminal is allowed to hand in to the visited 5G network; and under the condition that the 5G terminal is successfully switched into the visit 5G, transmitting the frequency point information of the attributive 4G network to the 5G terminal. And the frequency point information of the home 4G network is used for triggering the 5G terminal to redirect to the home 4G network.
The related heterogeneous roaming scheme is only to share the 5G network, and thus the terminal is switched from the home area to the roaming area into two types. One is to switch the visited 5G network from the home 4G network and the other is to switch from the home 5G network to the visited 5G network. Since the related art does not support the N26 interface between the home 4G core network and the visited 5G core network, the mobility between the home 4G network and the visited 5G network only supports redirection and does not support handover, while the visited 5G network in redirection can be attributed to the former random access scenario. Thus, the present disclosure refers to a handover scenario being a handover from a home 5G network to a visited 5G network. In addition, the protocol provides that the Xn port handover does not support handover across AMF network elements, and the home network and the roaming network are different AMFs, so that the handover from the home 5G network to the visited 5G network can only be based on Ng port handover.
In the above embodiment, the frequency point information of the home 4G network may be sent to the 5G terminal through a message for releasing RRC (Radio Resource Control) connection or suspending RRC connection. For example, the message for releasing the radio resource control RRC connection or suspending the RRC connection is an rrcreelease message.
In some embodiments, the frequency point information for the home 4G network is stored in the eutrarefequency field in the directedcarrierinfo-EUTRA field.
In still other embodiments, in the event that the 5G terminal switches from the home 5G network to the visited 5G network, the 5G terminal is denied switching in to the visited 5G network; acquiring a home 4G adjacent cell corresponding to the home 5G cell from the home 5G network; and controlling the 5G terminal to switch to the attribution 4G adjacent cell. The 4G network basically realizes full coverage, and in general, a home 5G cell is configured with a home 4G neighboring cell adjacent to the home 5G cell.
Currently, the heterogeneous network roaming scheme discussed by the four operators in the courtyard is a VoNR-5G voice solution, which does not support an N26 interface between a visited 5GC (5G Core, 5G Core network) and a home 4G EPC (4G Evolved Packet Core, 4G Packet Core network), and thus does not support a voice scheme of dropping (Fallback) from a visited 5G base station EPS (Evolved Packet System) to a home 4G base station. Therefore, the visited 5G network in the roaming area cannot provide the roaming 5G terminal which does not support the VoNR with the voice service, and cannot allow the part of the terminal to fall back to the home 4G network when the voice call is established.
In the above embodiment of the present disclosure, when the 5G terminal accesses or switches into the visited 5G network, the visited 5G network adds a step of determining whether the 5G terminal is an roaming terminal and whether VoNR is supported, and controls the 5G terminal to access the home 4G network when it is determined that the 5G terminal is an roaming terminal and VoNR is not supported, so that the 5G terminal can obtain a voice service provided by the home 4G network in a roaming area, and the voice service quality in a heterogeneous roaming scenario is improved. In this way, user complaints can be reduced, and user experience can be improved.
In addition, the above embodiments provide corresponding solutions for two scenarios, namely, random access and handover, respectively, and can further improve the voice service quality in the heterogeneous roaming scenario.
For an understanding of the home region, roaming region, home 5G network, visited 5G network and home 4G network, reference may be made to fig. 2.
Fig. 2 is a schematic diagram illustrating network coverage in a home region and a roaming region in accordance with some embodiments of the present disclosure.
As shown in fig. 2, the home area and the roaming area both cover the home 4G network, the home area also covers the home 5G network, and the roaming area also covers the visited 5G network. When the user terminal of the home 5G network enters the roaming area from the home area, the visited 5G network is accessed or switched in. For example, the home 5G network is a network of a first operator and the visited 5G network is a network of a second operator.
Fig. 3 is a block diagram illustrating a voice service apparatus based on heterogeneous roaming according to some embodiments of the present disclosure.
As shown in fig. 3, the voice service apparatus 3 based on the heterogeneous roaming includes a first determining module 31, a second determining module 32 and a control module 33. The voice service device 3 based on the heterogeneous network roaming is deployed in the visiting 5G network.
The first determining module 31 is configured to determine whether the 5G terminal belongs to a flooding terminal in response to the 5G terminal accessing or switching into the visited 5G network, for example, to execute step S110 shown in fig. 1.
The second determining module 32 is configured to determine whether the 5G terminal supports a voice service VoNR of a new air interface, for example, to execute step S120 shown in fig. 1, if the 5G terminal belongs to a flooding terminal.
The control module 33 is configured to control the 5G terminal to access to a home 4G network in case that the 5G terminal does not support the VoNR, so that the 5G terminal obtains a voice service in a roaming area, for example, perform step S130 shown in fig. 1.
Fig. 4 is a block diagram illustrating a voice service apparatus based on heterogeneous roaming according to further embodiments of the present disclosure.
As shown in fig. 4, the voice service apparatus 4 based on the heterogeneous roaming includes a memory 41; and a processor 42 coupled to the memory 41. The memory 41 is used for storing instructions for executing a corresponding embodiment of the voice service method based on the heterogeneous network roaming. The processor 42 is configured to execute the voice over foreign network roaming service method in any of the embodiments of the present disclosure based on instructions stored in the memory 41. The voice service device 4 based on the different network roaming is deployed in the visiting 5G network.
FIG. 5 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.
As shown in FIG. 5, the computer system 50 may take the form of a general purpose computing device. Computer system 50 includes a memory 510, a processor 520, and a bus 500 that connects the various system components.
The memory 510 may include, for example, system memory, non-volatile storage media, and the like. The system memory stores, for example, an operating system, an application program, a Boot Loader (Boot Loader), and other programs. The system memory may include volatile storage media such as Random Access Memory (RAM) and/or cache memory. The non-volatile storage medium stores, for instance, instructions to perform corresponding embodiments of at least one of the voice service methods based on heterogeneous roaming. Non-volatile storage media include, but are not limited to, magnetic disk storage, optical storage, flash memory, and the like.
The processor 520 may be implemented as discrete hardware components, such as a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gates or transistors, or the like. Accordingly, each of the modules, such as the judging module and the determining module, may be implemented by a Central Processing Unit (CPU) executing instructions in a memory for performing the corresponding step, or may be implemented by a dedicated circuit for performing the corresponding step.
Bus 500 may use any of a variety of bus architectures. For example, bus structures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, and Peripheral Component Interconnect (PCI) bus.
Computer system 50 may also include input-output interface 530, network interface 540, storage interface 550, and the like. These interfaces 530, 540, 550 and the memory 510 and the processor 520 may be connected by a bus 500. The input/output interface 530 may provide a connection interface for an input/output device such as a display, a mouse, and a keyboard. The network interface 540 provides a connection interface for various networking devices. The storage interface 550 provides a connection interface for external storage devices such as a floppy disk, a usb disk, and an SD card.
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable apparatus to produce a machine, such that the execution of the instructions by the processor results in an apparatus that implements the functions specified in the flowchart and/or block diagram block or blocks.
These computer-readable program instructions may also be stored in a computer-readable memory that can direct a computer to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart and/or block diagram block or blocks.
The present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
Through the voice service method and device based on the different-network roaming and the computer-storable medium in the embodiment, the 5G terminal which does not support the VoNR can obtain the voice service in the roaming area, and the voice service quality under the different-network roaming scene is improved.
So far, the method and apparatus for a voice service based on heterogeneous roaming, and a computer-readable storage medium according to the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Claims (17)

1. A voice service method based on heterogeneous network roaming is executed by a visiting 5G network and comprises the following steps:
responding to the access or switching of a 5G terminal into the visit 5G network, and judging whether the 5G terminal belongs to a flooding terminal;
under the condition that the 5G terminal belongs to the flooding terminal, judging whether the 5G terminal supports a new air interface voice service (VoNR);
and under the condition that the 5G terminal does not support the VoNR, controlling the 5G terminal to access a home 4G network so that the 5G terminal obtains voice service in a roaming area.
2. The method for the voice service based on the heterogeneous network roaming of claim 1, wherein the determining whether the 5G terminal belongs to a flooding terminal comprises:
acquiring a public land mobile network PLMN selected by the 5G terminal;
and judging whether the 5G terminal belongs to the flooding terminal or not according to the PLMN selected by the 5G terminal.
3. The method for the voice service based on the heterogeneous network roaming of claim 2, wherein the acquiring the Public Land Mobile Network (PLMN) selected by the 5G terminal comprises:
and under the condition that the 5G terminal is randomly accessed to the visit 5G network, acquiring the PLMN selected by the 5G terminal according to a message which is sent by the 5G terminal in the random access process and indicates that the radio resource control step is completed.
4. The method of claim 3, wherein the acquiring the PLMN selected by the 5G terminal according to the message indicating that the radio resource control procedure is completed and sent by the 5G terminal in the random access process comprises:
and acquiring the PLMN selected by the 5G terminal according to the field indicating the selected PLMN in the message indicating the completion of the radio resource control step.
5. The method for the voice service based on the heterogeneous network roaming of claim 2, wherein the acquiring the Public Land Mobile Network (PLMN) selected by the 5G terminal comprises:
and under the condition that the 5G terminal is switched from a home 5G network to the visit 5G network, acquiring the PLMN selected by the 5G terminal according to a switching request message sent by an AMF network element corresponding to the visit 5G network.
6. The voice service method based on the heterogeneous roaming service according to claim 5, wherein the obtaining the PLMN selected by the 5G terminal according to the handover request message sent by the AMF network element corresponding to the visited 5G network comprises:
and acquiring the PLMN selected by the 5G terminal according to the PLMN service field in the switching request message.
7. The method of claim 1, wherein the determining whether the 5G terminal supports a new air interface voice service VoNR comprises:
acquiring terminal capability information of the 5G terminal;
and judging whether the 5G terminal supports VoNR or not according to the terminal capability information of the 5G terminal.
8. The method for the voice service based on the heterogeneous network roaming of claim 7, wherein the acquiring of the terminal capability information of the 5G terminal comprises:
and under the condition that the 5G terminal randomly accesses the visit 5G network, receiving the terminal capability information reported by the 5G terminal in the random access process.
9. The method for the voice service based on the heterogeneous network roaming of claim 7, wherein the acquiring of the terminal capability information of the 5G terminal comprises:
receiving terminal capability information of the 5G terminal transferred by a home 5G network in case that the 5G terminal is switched from the home 5G network to the visited 5G network.
10. The method for the voice service based on the heterogeneous network roaming according to claim 8 or 9, wherein the determining whether the 5G terminal supports VoNR comprises:
judging whether the 5G terminal supports VoNR according to a field indicating whether the terminal capability information supports VoNR, wherein,
in the case that the field indicating whether or not VoNR is supported is a first value, the 5G terminal supports VoNR;
and in the case that the field indicating whether the VoNR is supported is the second value, the 5G terminal does not support VoNR.
11. The method for the voice service based on the heterogeneous network roaming of claim 1, wherein the controlling the 5G terminal to access to a home 4G network comprises:
and under the condition that the 5G terminal is randomly accessed to the visit 5G network, sending frequency point information of an attributive 4G network to the 5G terminal, wherein the frequency point information of the attributive 4G network is used for triggering the terminal to be redirected to the attributive 4G network.
12. The method for the voice service based on the heterogeneous network roaming of claim 1, wherein the controlling the 5G terminal to access to a home 4G network comprises:
allowing the 5G terminal to switch into the visited 5G network when the 5G terminal is switched from a home 5G network to the visited 5G network;
and under the condition that the 5G terminal is successfully switched into the visit 5G, sending frequency point information of an attributive 4G network to the 5G terminal, wherein the frequency point information of the attributive 4G network is used for triggering the 5G terminal to be redirected to the attributive 4G network.
13. The method for the voice service based on the heterogeneous network roaming according to claim 11 or 12, wherein the sending of the frequency point information of the home 4G network to the 5G terminal comprises:
and sending the frequency point information of the attributive 4G network to the 5G terminal through a message for releasing Radio Resource Control (RRC) connection or suspending the RRC connection.
14. The method for the voice service based on the heterogeneous network roaming of claim 1, wherein the controlling the 5G terminal to access to a home 4G network comprises:
under the condition that the 5G terminal is switched from a home 5G network to the visit 5G network, refusing the 5G terminal to switch into the visit 5G network;
acquiring a home 4G neighboring cell corresponding to a home 5G cell from a home 5G network;
and controlling the 5G terminal to be switched to the attributive 4G adjacent area.
15. A voice service device based on heterogeneous network roaming is deployed in a visited 5G network, and comprises:
the first judging module is configured to respond to the access or switching of a 5G terminal into the visit 5G network and judge whether the 5G terminal belongs to a flooding terminal;
the second judging module is configured to judge whether the 5G terminal supports a new air interface voice service VoNR or not under the condition that the 5G terminal belongs to a flooding terminal;
a control module configured to control the 5G terminal to access a home 4G network so that the 5G terminal obtains a voice service in a roaming area, in case that the 5G terminal does not support the VoNR.
16. A voice service device based on heterogeneous network roaming is deployed in a visited 5G network, and comprises:
a memory; and
a processor coupled to the memory, the processor configured to execute the method for voice services over heterogeneous roaming according to any one of claims 1 to 14 based on instructions stored in the memory.
17. A computer-storable medium having stored thereon computer program instructions which, when executed by a processor, implement the method for a voice service based on heterogeneous roaming according to any one of claims 1 to 14.
CN202210364889.6A 2022-04-08 2022-04-08 Voice service method and device based on different network roaming Pending CN114615635A (en)

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