CN114286301B

CN114286301B - Voice service control method and device, storage medium and terminal equipment

Info

Publication number: CN114286301B
Application number: CN202111680039.9A
Authority: CN
Inventors: 祝定静; 金逸
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-09-22
Anticipated expiration: 2041-12-31
Also published as: CN114286301A

Abstract

A voice service control method and device, a storage medium and a terminal device, the voice service control method comprises the following steps: when returning to the new wireless network from the traditional communication network, executing the reestablishment flow of the IMS PDU; and initiating an IMS registration process and synchronizing the state of the IMS with the new wireless network. The technical scheme of the application can ensure the normal operation of the voice service and the data service when the terminal equipment is switched between different communication networks.

Description

Voice service control method and device, storage medium and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and apparatus for controlling a voice service, a storage medium, and a terminal device.

Background

A terminal device (UE) is registered on a fifth generation mobile communication technology (5th generation mobile networks or 5th generation wireless systems,5G) network, when a User initiates a telephone service or receives a telephone page, if the UE does not support a new radio-based voice service (Voice over New Radio, VONR) or the current 5G network does not support VONR, the UE will fall back to a fourth generation mobile communication technology (4th generation mobile networks or 4th generation wireless systems,4G) network through an evolved packet system (Evolved Packet System, EPS) Fallback (Fallback) or network selection, and other modes for performing the telephone service.

In the case that the current 4G network is not available or the signal of the 4G network is poor, such as the case of voice service continuity (Single Radio Voice Call Continuity, SRVCC), the UE will eventually fall back to the 2/3G network for telephone service. If the UE does not register in a Packet Switching domain (PS) in the 2/3G network, and then directly returns to the 5G network registration without going through the 4G network after the 2/3G network finishes the telephone service, the UE may perform mobility registration according to a protocol in this scenario.

However, the mobility registration of the UE is normal in the real network, but the state of the IP multimedia subsystem (IP Multimedia Subsystem, IMS) is abnormal, the telephone service of the UE in the 5G network is abnormal, the network cannot initiate EPS Fallback, and both the calling party and the called party fail.

Disclosure of Invention

The technical problem solved by the application is how to ensure the normal operation of voice service and data service when terminal equipment is switched between different communication networks.

In order to solve the above technical problems, in a first aspect, an embodiment of the present application provides a voice service control method, where the voice service control method includes: when returning to the new wireless network from the traditional communication network, executing the reestablishment flow of the IMS PDU; and initiating an IMS registration process and synchronizing the state of the IMS with the new wireless network.

Optionally, the performing the reestablishment procedure of the IMS PDU includes: detecting the state of IMS PDU; and executing the reestablishment flow of the IMS PDU according to the state of the IMS PDU.

Optionally, the executing the reestablishment procedure of the IMS PDU according to the state of the IMS PDU includes: if the state of the IMS PDU is the active state, initiating an IMS PDU session release procedure to release the current IMS PDU session; a reestablishment procedure of IMS PDUs is initiated to establish a new IMS PDU session.

Optionally, the performing the reestablishment procedure of the IMS PDU includes: determining whether circuit domain traffic is performed at the legacy communication network and no packet switched domain registration is performed at the legacy network; if yes, executing the reestablishment flow of the IMS PDU.

Optionally, the legacy communication network is a 2G network or a 3G network, the new wireless network is a 5G network, and the performing the reestablishment procedure of the IMS PDU includes: determining that the circuit domain service is executed in the 2G network or the 3G network, the packet switched domain registration is not executed in the 2G network or the 3G network, and executing the reestablishment flow of the IMS PDU when the packet switched domain registration is not executed in the 4G network in the process of returning to the 5G network.

Optionally, before the performing the reestablishment procedure of the IMS PDU, the method further includes: registering in the new wireless network, and establishing IMS PDU session and data service session; fall back to the legacy communication network and initiate circuit domain registration or circuit domain traffic.

Optionally, the dropping back to the legacy communication network includes: directly from the new wireless network back to the legacy communication network.

Optionally, the conventional communication network is a 2G network or a 3G network, and the fallback to the conventional communication network includes: fall back to the 4G network and perform tracking area update in the 4G network; fall back to the 2G network or 3G network.

Optionally, before the performing the reestablishment procedure of the IMS PDU, the method further includes: mobility registration is performed at the new wireless network.

In a second aspect, the embodiment of the present application also discloses a voice service control device, where the voice service control device includes: the reestablishment module is used for executing the reestablishment flow of the IMS PDU when the traditional communication network returns to the new wireless network; and the registration module is used for initiating an IMS registration process and synchronizing the state of the IMS with the new wireless network.

In a third aspect, the embodiment of the present application further discloses a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, performs the steps of the voice service control method.

In a fourth aspect, the embodiment of the present application further discloses a terminal device, including a memory and a processor, where the memory stores a computer program capable of running on the processor, and the processor executes the steps of the voice service control method when running the computer program.

Compared with the prior art, the technical scheme of the embodiment of the application has the following beneficial effects:

in the technical scheme of the application, when the traditional communication network of the terminal equipment returns to the new wireless network, the reestablishment flow of the IMS PDU can be executed, and the IMS registration flow can be restarted. By reestablishing IMS PDU session and re-carrying out IMS registration, abnormal voice telephone service can be avoided, and smooth development of voice service is ensured; in addition, since the session of the data service remains in a normal state, the data service can also continue in the new wireless network.

Drawings

Fig. 1 is a flowchart of a voice service control method according to an embodiment of the present application;

fig. 2 is a specific flowchart of a voice service control method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a voice service control device according to an embodiment of the present application.

Detailed Description

The new wireless network to which the embodiments of the present application are applicable includes, but is not limited to, a fifth generation (5 th-generation, 5G) system, an NR system, and a future evolution system or a plurality of communication convergence systems. The 5G system may be a non-independent Networking (NSA) 5G system or an independent networking (SA) 5G system. The technical scheme of the application is also suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-evaluation architecture and the like.

The present application relates generally to communication between a terminal device and a network device. Wherein:

the network device in the embodiment of the present application may also be referred to as an access network device, for example, may be a Base Station (BS) (also referred to as a base station device), where the network device is a device deployed in a radio access network (Radio Access Network, RAN) to provide a wireless communication function. For example, the device for providing base station functionality in the second generation (2 nd-generation, 2G) network comprises a base radio transceiver station (base transceiver station, BTS), the device for providing base station functionality in the third generation (3 rd-generation, 3G) network comprises a node B (NodeB), the device for providing base station functionality in the fourth generation (4 th-generation, 4G) network comprises an evolved node B (eNB), the device for providing base station functionality in the wireless local area network (wireless local area networks, WLAN) is an Access Point (AP), the next generation base station node (next generation node base station, gNB) in the NR is an Access Point (AP), and the node B (ng-eNB) continues to evolve, wherein the communication between the gNB and the terminal device is performed using NR technology, and the communication between the ng-eNB and the terminal device is performed using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology, both the gNB and the ng-eNB may be connected to the 5G core network. The network device in the embodiment of the present application further includes a device for providing a base station function in a new communication system in the future, and the like.

The terminal device (terminal equipment) in embodiments of the present application may refer to various forms of access terminals, subscriber units, subscriber stations, mobile Stations (MSs), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user equipment. The terminal device may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc., as embodiments of the present application are not limited in this regard. The terminal device may also be referred to as a User Equipment (UE), a terminal, etc.

As described in the background art, the mobility registration of the UE is normal under the real network, but the network state of the IP multimedia subsystem (IP Multimedia Subsystem, IMS) is abnormal, the telephone service of the UE is abnormal under the 5G network, the network cannot initiate EPS Fallback, and both the calling party and the called party fail.

In order to solve the problem of abnormal telephone service, the prior art has the method that after the UE finishes the telephone call in the 2/3G network, even if PS domain registration does not occur, the UE returns to the 5G network and then directly performs 5G initial registration so as to recover the communication between the UE and the 5G network.

However, the prior art scheme has a disadvantage that after the UE returns to the 5G network, the user may not use the data service for a period of time, and the user experience is poor.

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

Fig. 1 is a flowchart of a voice service control method according to an embodiment of the present application.

The voice service control method can be used in the terminal equipment, namely, the terminal equipment can execute the steps of the method, and the chip in the terminal equipment can also execute the steps of the method.

Specifically, the voice service control method may include the steps of:

step 101: when returning to the new wireless network from the traditional communication network, executing the reestablishment flow of the IMS PDU;

step 102: and initiating an IMS registration process and synchronizing the state of the IMS with the new wireless network.

It should be noted that the serial numbers of the steps in the present embodiment do not represent a limitation on the execution sequence of the steps.

It will be appreciated that in a specific implementation, the voice service control method may be implemented in a software program, where the software program runs on a processor integrated within a chip or a chip module. The method may also be implemented by combining software with hardware, and the application is not limited.

The conventional communication network in the embodiment of the present application may be a second generation (2 nd-generation, 2G) network, or may be a third generation (3 rd-generation, 3G) network.

In a specific implementation of step 101, the terminal device may perform a reestablishment procedure of an IMS Packet Data Unit (PDU) to reestablish an IMS PDU session (session).

Specifically, the reestablishing procedure of the IMS PDU may be that the terminal device initiates a PDU session establishment request to the network device, and the network device returns a PDU session establishment acceptance in response to the PDU session establishment request.

It should be noted that, for the specific implementation of the reestablishment procedure of the IMS PDU (for example, parameters carried by the terminal device in the establishment request, parameters returned by the network device, etc.), reference may be made to the prior art, which is not described herein.

After re-establishing the IMS PDU session, the terminal device may initiate a flow of IMS registration in a specific implementation of step 102 to synchronize the terminal device with the state of the IMS with the new wireless network.

Compared with the prior art that 5G initial registration is directly carried out, the embodiment of the application can ensure the normal operation of telephone service through IMS registration. In addition, in the prior art, the local data service PDU session is released by directly performing the 5G initial registration, and a certain time is required for establishing the data service PDU session, for example, after the PDU session is released, the terminal device re-initiates to establish the data connection, which has a waiting time, usually 5-10 s, so that the user cannot use the data service for a period of time. The embodiment of the application executes IMS registration, and PDU session of the data service is reserved, thereby ensuring normal development of the data service and improving user experience.

In one non-limiting embodiment, step 101 may include the steps of: the terminal device can detect the state of the IMS PDU; and executing the reestablishment flow of the IMS PDU according to the state of the IMS PDU.

In this embodiment, when the terminal device returns from the conventional communication network to the new wireless network, the state of the IMS PDU may be an active state or an inactive state. The state of the IMS PDU is different, and the terminal device may also perform the re-establishment procedure of the IMS PDU.

Further, if the state of the IMS PDU is an active state, initiating an IMS PDU session release procedure to release the current IMS PDU session; a reestablishment procedure of IMS PDUs is initiated to establish a new IMS PDU session.

In this embodiment, for an IMS PDU session in an active state, the terminal device needs to release the current IMS PDU session first to initiate a reestablishment procedure of the IMS PDU.

Further, if the state of the IMS PDU is inactive, the terminal device may directly initiate a reestablishment procedure of the IMS PDU.

In one non-limiting embodiment, the terminal device determines whether to perform circuit-switched domain traffic on the legacy communication network and does not perform packet-switched domain registration on the legacy network; if yes, executing the reestablishment flow of the IMS PDU.

In the embodiment of the application, the terminal equipment can detect the service execution condition and the registration condition of the terminal equipment in the traditional network according to the history record and determine whether to execute the reestablishment flow of the IMS PDU. The terminal device performs the circuit domain service in the legacy communication network, and performs the re-establishment procedure of the IMS PDU without performing the packet switched domain registration in the legacy network.

In a specific embodiment, the legacy communication network is a 2G network or a 3G network and the new wireless network is a 5G network. The terminal device determines that the circuit domain service is executed in the 2G network or the 3G network, the packet switched domain registration is not performed in the 2G network or the 3G network, and the reestablishment flow of the IMS PDU is executed when the packet switched domain registration is not performed in the 4G network in the process of returning to the 5G network.

In one non-limiting embodiment, prior to step 101 of fig. 1, the terminal device registers with the new wireless network and establishes an IMS PDU session and a data service session; the terminal device falls back to the traditional communication network and initiates circuit domain registration or circuit domain service. In this case, a return of the terminal device from the legacy communication network to the new wireless network occurs.

In particular, the reason why the terminal device does not perform packet switched domain registration in the 2/3G network may be one or more of the following, which the embodiments of the present application do not limit:

1. executing circuit domain service under 2G network, and can not register packet switched domain at the same time;

2. the 2/3G network indicates that packet switched domain services are not supported;

3. the 2/3G network may be a restricted resident network, such as an emergency call placed in a restricted network.

In a specific embodiment, referring to fig. 2, fig. 2 shows a specific flow of a voice service control method. In the embodiment of the application, the traditional communication network is a 2/3G network, and the new wireless network is a 5G network.

Those skilled in the art will appreciate that the legacy communication network and the new wireless network may be any other network system that may be implemented, and embodiments of the present application are not limited in this regard.

In step 201, the terminal device performs initial registration with the 5G network. The terminal equipment establishes IMS PDU session and data service PDU session with the 5G network, and the terminal equipment performs voice service and data service with the 5G network.

In step 202, the terminal device falls back to the 2/3G network for CS services. Specifically, the terminal device may fall back to the 2/3G network and initiate CS domain registration or CS domain services (CS services include all services for which CS domain connection is established, such as telephony, sms, supplementary services, etc.).

The fallback of the terminal device from the 5G network to the 2/3G network may include the following two ways:

a. the terminal equipment firstly falls back to the 4G network, the tracking area update (Tracking Area Update, TAU) is executed in the 4G network, and then falls back to the 2/3G network;

b. the UE drops directly from the 5G network back to the 2/3G network.

Specifically, the fallback of the terminal device to the 2/3G network may be triggered by a CS service, such as a telephone service, where the terminal device selects fallback according to priority, or the signal weakness of the 4G network occurs SRVCC, etc.; non-CS service triggers such as 5G network information fluctuation drop to 2/3G network, etc. are also possible, and the embodiment of the application is not limited in this respect.

In step 203, the terminal device returns to the 5G network, and performs mobility registration.

Specifically, the terminal equipment ends the service in the CS domain of the 2/3G network, and then directly returns to 5G. If the terminal device drops back to the 2/3G network in step 202 through the scenario described in mode a, the terminal device performs mobility registration in the 5G network and the registration is successful. If the terminal device drops back to the 2/3G network in step 202 by way of the scenario described in way b, the terminal device does not need to perform mobility registration.

In step 204, the terminal device initiates IMS PDU session release.

Specifically, the terminal device detects that CS service is performed in the 2/3G network, but PS domain registration is not performed, and does not register in the 4G network before returning to the 5G network. If the IMS PDU session of the terminal equipment is still in an activated state at this time, the terminal equipment initiates a PDU session release (session release) process to actively release the IMS PDU session.

More specifically, the PDU session release procedure includes the steps of:

4.1, the terminal equipment sends PDU conversation release request (PDU SESSION RELEASE REQUEST);

4.2, 5G network device returns PDU session release command (PDU SESSION RELEASE COMMAND);

4.3, the terminal device releases the PDU session and returns a PDU session release complete to the 5G network (PDU SESSION RELEASE COMPLETE).

In step 205, the terminal device initiates IMS PDU session establishment.

Specifically, the PDU session establishment procedure includes the following steps:

5.1, the terminal equipment sends PDU conversation to set up the request (PDU SESSION ESTABLISHMENT REQUEST);

the 5.2, 5G network device returns a PDU session establishment acceptance (PDU SESSION ESTABLISHMENT ACCEPT).

In step 206, the terminal device re-performs IMS registration.

According to the embodiment of the application, the IMS state is re-synchronized with the network in a mode of re-establishing the IMS PDU session and re-carrying out IMS registration so as to avoid abnormal telephone service; because the data service PDU session keeps in a normal state, after the terminal equipment returns to the 5G network from the 2/3G network, the data service can still be continued in the 5G network, and the user experience is improved.

Referring to fig. 3, the embodiment of the application also discloses a voice service control device. The voice service control apparatus 30 may include:

a reestablishment module 301, configured to execute a reestablishment procedure of the IMS PDU when returning from the legacy communication network to the new wireless network;

a registration module 302, configured to initiate an IMS registration procedure and synchronize the state of the IMS with the new wireless network.

Further, the reconstruction module 301 may include: a detection unit, configured to detect a state of an IMS PDU; and the reestablishment unit is used for executing the reestablishment flow of the IMS PDU according to the state of the IMS PDU.

Further, when the state of the IMS PDU is an active state, the reestablishment module 301 initiates an IMS PDU session release procedure to release the current IMS PDU session; a reestablishment procedure of IMS PDUs is initiated to establish a new IMS PDU session.

For more details of the working principle and the working manner of the voice service control device 30, reference may be made to the related descriptions in fig. 1 to fig. 2, which are not repeated here.

In a specific implementation, the above-mentioned voice service control device may correspond to a Chip having a voice service control function in a terminal device, for example, an SOC (System-On-a-Chip), a baseband Chip, etc.; or the terminal equipment comprises a chip module with a voice service control function; or corresponds to a chip module having a chip with a data processing function or corresponds to a terminal device.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal, each module/unit included in the device, product, or application may be implemented by using hardware such as a circuit, different modules/units may be located in the same component (for example, a chip, a circuit module, or the like) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) part of the modules/units may be implemented by using hardware such as a circuit.

The embodiment of the application also discloses a storage medium which is a computer readable storage medium and is stored with a computer program, and the computer program can execute the steps of the method when running. The storage medium may include ROM, RAM, magnetic or optical disks, and the like. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory memory (non-transitory) or the like.

The embodiment of the application also discloses an automatic device, and the terminal device can comprise a memory and a processor, wherein the memory stores a computer program capable of running on the processor. The processor may perform the steps of the aforementioned method when running the computer program. The terminal equipment comprises, but is not limited to, mobile phones, computers, tablet computers and the like.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments of the present application means two or more.

The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order is used, nor is the number of the devices in the embodiments of the present application limited, and no limitation on the embodiments of the present application should be construed.

The "connection" in the embodiment of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in the embodiment of the present application.

It should be appreciated that in the embodiment of the present application, the processor may be a central processing unit (central processing unit, abbreviated as CPU), and the processor may also be other general purpose processors, digital signal processors (digital signal processor, abbreviated as DSP), application specific integrated circuits (application specific integrated circuit, abbreviated as ASIC), off-the-shelf programmable gate arrays (field programmable gate array, abbreviated as FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically erasable ROM (electrically EPROM, EEPROM), or a flash memory. The volatile memory may be a random access memory (random access memory, RAM for short) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, abbreviated as RAM) are available, such as static random access memory (static RAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, abbreviated as DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus random access memory (direct rambus RAM, abbreviated as DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method according to the embodiments of the present application.

Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the application, and the scope of the application should be assessed accordingly to that of the appended claims.

Claims

1. A voice service control method, comprising:

when returning to the new wireless network NR from the traditional communication network, executing the reestablishment flow of the IMS PDU, wherein the traditional communication network is a 2G network or a 3G network;

and initiating an IMS registration process and synchronizing the state of the IMS with the new wireless network.

2. The voice service control method according to claim 1, wherein the performing a reestablishment procedure of the IMS PDU includes:

detecting the state of IMS PDU;

and executing the reestablishment flow of the IMS PDU according to the state of the IMS PDU.

3. The voice service control method according to claim 2, wherein the performing a reestablishment procedure of the IMS PDU according to the state of the IMS PDU comprises:

if the state of the IMS PDU is the active state, initiating an IMS PDU session release procedure to release the current IMS PDU session;

a reestablishment procedure of IMS PDUs is initiated to establish a new IMS PDU session.

4. The voice service control method according to claim 1, wherein the performing a reestablishment procedure of the IMS PDU includes:

determining whether circuit domain traffic is performed at the legacy communication network and no packet switched domain registration is performed at the legacy communication network;

if yes, executing the reestablishment flow of the IMS PDU.

5. The voice service control method according to claim 1, wherein the legacy communication network is a 2G network or a 3G network, the new wireless network is a 5G network, and the performing the reestablishment procedure of the IMS PDU includes:

determining that the circuit domain service is executed in the 2G network or the 3G network, the packet switched domain registration is not executed in the 2G network or the 3G network, and executing the reestablishment flow of the IMS PDU when the packet switched domain registration is not executed in the 4G network in the process of returning to the 5G network.

6. The voice service control method according to claim 1, wherein before the performing the reestablishment procedure of the IMS PDU, further comprises:

registering in the new wireless network, and establishing IMS PDU session and data service session;

fall back to the legacy communication network and initiate circuit domain registration or circuit domain traffic.

7. The voice traffic control method according to claim 6, wherein said fallback to said legacy communication network comprises:

directly from the new wireless network back to the legacy communication network.

8. The voice traffic control method according to claim 6, wherein the legacy communication network is a 2G network or a 3G network, and the fallback to the legacy communication network comprises:

fall back to the 4G network and perform tracking area update in the 4G network;

fall back to the 2G network or 3G network.

9. The voice service control method according to claim 8, wherein before the performing the reestablishment procedure of the IMS PDU, further comprises:

mobility registration is performed at the new wireless network.

10. A voice service control apparatus, comprising:

the reestablishment module is used for executing the reestablishment flow of the IMS PDU when returning to the new wireless network NR from the traditional communication network, wherein the traditional communication network is a 2G network or a 3G network;

and the registration module is used for initiating an IMS registration process and synchronizing the state of the IMS with the new wireless network.

11. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when run by a processor performs the steps of the voice service control method according to any of claims 1 to 9.

12. A terminal device comprising a memory and a processor, said memory having stored thereon a computer program executable on said processor, characterized in that said processor executes the steps of the voice traffic control method according to any of claims 1 to 9 when said computer program is executed.