CN110324171B

CN110324171B - Internet protocol multimedia system IMS parameter obtaining method, device and system

Info

Publication number: CN110324171B
Application number: CN201810502486.7A
Authority: CN
Inventors: 窦凤辉; 段小嫣; 金辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-03-29
Filing date: 2018-05-23
Publication date: 2020-11-17
Anticipated expiration: 2038-05-23
Also published as: CN110324171A

Abstract

The embodiment of the application provides a method, a device and a system for obtaining IMS parameters of an Internet protocol multimedia system, which relate to the technical field of communication, wherein the method comprises the following steps: the method comprises the steps that a terminal device sends a first message to a first core network device, wherein the first message carries first information, the first information is used for enabling the first core network device to send first IMS parameters to the terminal device, the terminal device receives a second message sent by the first core network device, the second message carries the first IMS parameters, and the terminal device stores the first IMS parameters. By the method and the device, the efficiency of configuring the IMS parameters can be improved.

Description

Internet protocol multimedia system IMS parameter obtaining method, device and system

The present application claims the benefit of priority from the chinese patent application entitled "a method of parameter configuration" filed on 29/03/2018, application No. 201810271646.1, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for acquiring an internet protocol multimedia system IMS parameter.

Background

With the development of communication technology, an internet protocol multimedia system (IMS) can provide a personalized converged communication service for a user, and meet the requirements of the user on a series of communications such as voice communications, data communications, and multimedia communications.

In practice, a technician may pre-configure IMS parameters, such as a Mobile Country Code (MCC), a Mobile Network Code (MNC), and the like, on a terminal device (User Equipment). When the terminal device needs to use the IMS service, the terminal device may perform flows such as IMS registration and IMS session according to the IMS parameters.

Based on the prior art, the number of terminal devices is usually large, and technicians need to configure IMS parameters on each terminal device, which results in low efficiency of configuring IMS parameters.

Disclosure of Invention

The embodiment of the application provides an IMS parameter obtaining method, device and system, and the IMS parameter obtaining method, device and system can improve the efficiency of configuring IMS parameters. The technical scheme is as follows:

in a first aspect, an IMS parameter obtaining method is provided, including: first, a terminal device sends a first message to a first core network device. The first message carries first information, and the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device. Then, the terminal device receives a second message sent by the first core network device. The second message carries the first IMS parameters. And finally, the terminal equipment stores the first IMS parameter.

In the embodiment of the application, the terminal device sends a first message carrying first information to the first core network device. And the terminal equipment receives the second message sent by the first core network equipment and stores the first IMS parameter. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

In one possible implementation manner, the method further includes: and the terminal equipment receives the third message sent by the first core network equipment. The third message carries the second IMS parameters. And the terminal equipment modifies the first IMS parameter into a second IMS parameter.

In the embodiment of the application, the terminal device receives a third message which is sent by the first core network device and carries the second IMS parameter, and modifies the first IMS parameter into the second IMS parameter. In this way, the terminal device can realize the update of the IMS parameters.

In one possible implementation, when the first core network device has the access and mobility management function, the first information includes at least one of voice domain preference information, information of a slice, IMS indication information, and IMS capability information.

In the embodiment of the present application, when the first core network device has the access and mobility management functions, the terminal device may send first information including at least one of voice domain preference information, slice information, IMS indication information, and IMS capability information to the first core network device, so that the first core network device sends the first IMS parameter to the terminal device.

In a possible implementation manner, when the first core network device has a session management function, the first information includes at least one of a data network name and information of a slice.

In this embodiment of the application, when the first core network device has a session management function, the terminal device may send first information including at least one of a data network name and slice information to the first core network device, so that the first core network device sends the first IMS parameter to the terminal device.

In one possible implementation, when the first information includes information of a slice of an IMS type, the first IMS parameter is an IMS parameter corresponding to the slice.

In a possible implementation manner, when the first information includes at least one of IMS indication information and IMS capability information, the first information is used to enable the first core network device to send the first IMS parameter to the terminal device; or

When the first information comprises voice domain preference information and the voice domain preference information indicates that the IMS preferentially or only supports the IMS, the first information is used for enabling the first core network equipment to send first IMS parameters to the terminal equipment; or

When the first information includes information of a slice and the type of the slice is IMS, the first information is used to enable the first core network device to send the first IMS parameter to the terminal device.

In a possible implementation manner, when the first information includes a data network name and the data network name is IMS, the first information is used to enable the first core network device to send a first IMS parameter to the terminal device; or

In a second aspect, an IMS parameter obtaining method is provided, including: first, a first core network device receives a first message sent by a terminal device. The first message carries first information. And if the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment, the first core network equipment acquires the first IMS parameters. Then, the first core network device sends a second message to the terminal device. The second message carries the first IMS parameters.

In the embodiment of the application, after receiving a first message carrying first information sent by a terminal device, a first core network device obtains a first IMS parameter, and sends the first IMS parameter to the terminal device through a second message. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

In a possible implementation manner, the acquiring, by the first core network device, the first IMS parameter includes: first, the first core network device sends a fourth message to the second core network device. The fourth message carries second information, the second information is used for requesting the first IMS parameter, so that the second core network device obtains the first IMS parameter from the IMS device, and sends a fifth message to the first core network device, and the fifth message carries the first IMS parameter. Then, the first core network device receives a fifth message sent by the second core network device.

In one possible implementation manner, the method further includes: and the first core network equipment receives a sixth message sent by the second core network equipment. The sixth message carries the second IMS parameters. Then, the first core network device sends a third message to the terminal device. The third message carries the second IMS parameter, so that the terminal device performs update processing according to the second IMS parameter.

In the embodiment of the application, after receiving a sixth message carrying the second IMS parameter sent by the second core network device, the first core network device sends a third message carrying the second IMS parameter to the terminal device. In this way, the terminal device can realize the update of the IMS parameters.

In one possible implementation manner, the method further includes: if the first information comprises at least one of IMS indication information and IMS capability information, the first core network equipment determines that the first information is used for enabling the first core network equipment to send first IMS parameters to the terminal equipment; or

If the first information comprises voice domain preference information, and the voice domain preference information indicates that the IMS preferentially or only supports the IMS, the first core network equipment determines that the first information is used for enabling the first core network equipment to send first IMS parameters to the terminal equipment; or

If the first information comprises the sliced information and the type of the slice is IMS, the first core network device determines that the first information is used for enabling the first core network device to send the first IMS parameters to the terminal device.

In one possible implementation manner, the method further includes: if the first information comprises a data network name and the data network name is IMS, the first core network equipment determines that the first information is used for enabling the first core network equipment to send first IMS parameters to the terminal equipment; or

In a possible implementation manner, when the first information includes information of a slice of an IMS type, the fourth message also carries the information of the slice, so that the second core network device obtains the first IMS parameter corresponding to the slice from the IMS device.

In a third aspect, an IMS parameter obtaining method is provided, including: first, the IMS device acquires a first IMS parameter stored in advance. Then, the IMS device sends the first IMS parameters to the second core network device.

In the embodiment of the application, the IMS device acquires a first IMS parameter stored in advance, and sends the first IMS parameter to the first core network device through the second core network device. Subsequently, the first core network device may send the first IMS parameter to the terminal device. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

In one possible implementation manner, the method further includes: and when detecting that the first IMS parameter is updated to the second IMS parameter, the IMS equipment sends the second IMS parameter to the second core network equipment.

In the embodiment of the present application, when detecting that the first IMS parameter is updated to the second IMS parameter, the IMS device sends the second IMS parameter to the second core network device. Subsequently, the first core network device may send the second IMS parameter to the terminal device. In this way, the terminal device can realize the update of the IMS parameters.

In one possible implementation manner, the obtaining, by the IMS device, the first IMS parameter stored in advance includes: the IMS equipment acquires a first IMS parameter corresponding to the slice from the pre-stored corresponding relation between the slice information and the IMS parameters.

In a fourth aspect, a terminal device is provided, which includes: first, a first message is sent to a first core network device through a sending module. The first message carries first information, and the first information is used for enabling the first core network device to send the IMS parameters to the terminal device. Then, a second message sent by the first core network device is received through the receiving module. The second message carries the first IMS parameters. And finally, saving the first IMS parameters through a saving module.

In the embodiment of the application, the terminal device sends a first message carrying first information to the first core network device through the sending module. And then, receiving a second message sent by the first core network equipment through a receiving module, and storing the first IMS parameter through a storing module. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

In a possible implementation manner, the receiving module receives a third message sent by the first core network device. The third message carries the second IMS parameters. The modification module then modifies the first IMS parameter to a second IMS parameter.

In the embodiment of the application, the terminal device receives, through the receiving module, a third message carrying the second IMS parameter and sent by the first core network device, and modifies, through the modifying module, the first IMS parameter to the second IMS parameter. In this way, the terminal device can realize the update of the IMS parameters.

In a fifth aspect, a first core network device is provided, including: first, a receiving module receives a first message sent by a terminal device. The first message carries first information. Then, the sending module determines that the first IMS parameter is obtained if the first information is used to enable the first core network device to send the IMS parameter to the terminal device. And finally, the sending module sends a second message to the terminal equipment. The second message carries the first IMS parameters.

In the embodiment of the application, after receiving a first message carrying first information sent by a terminal device through a receiving module, a first core network device obtains a first IMS parameter through a sending module, and sends the first IMS parameter to the terminal device through a second message. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

In a possible implementation manner, the sending module is specifically configured to: first, a fourth message is sent to a second core network device, the fourth message carries second information, the second information is used for requesting a first IMS parameter, so that the second core network device obtains the first IMS parameter from the IMS device, and a fifth message is sent to the first core network device, and the fifth message carries the first IMS parameter. Then, a fifth message sent by the second core network device is received.

In a possible implementation manner, first, the receiving module receives a sixth message sent by the second core network device. The sixth message carries the second IMS parameters. Then, the sending module sends a third message to the terminal device. The third message carries the second IMS parameter, so that the terminal device performs update processing according to the second IMS parameter.

In the embodiment of the application, after receiving, by the first core network device, the sixth message carrying the second IMS parameter and sent by the second core network device through the receiving module, the first core network device sends, to the terminal device, the third message carrying the second IMS parameter through the sending module. In this way, the terminal device can realize the update of the IMS parameters.

In one possible implementation manner, the method further includes: a first determining module, configured to determine, by the first core network device, that the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device, if the first information includes at least one of IMS indication information and IMS capability information; or

In one possible implementation manner, the method further includes: the second determining module is used for determining that the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment if the first information comprises a data network name and the data network name is IMS; or

In a sixth aspect, an internet protocol multimedia system IMS device is provided, comprising: the acquisition module acquires pre-stored IMS parameters. Then, the sending module sends the first IMS parameter to the second core network device.

In the embodiment of the application, the IMS device acquires the first IMS parameter stored in advance through the acquisition module, and sends the first IMS parameter to the second core network device through the sending module. Subsequently, the second core network device sends the first IMS parameter to the first core network device. The first core network device may send the first IMS parameter to the terminal device. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

In a possible implementation manner, when detecting that the first IMS parameter is updated to the second IMS parameter, the sending module sends the second IMS parameter to the second core network device.

In the embodiment of the present application, when detecting that the first IMS parameter is updated to the second IMS parameter, the sending module of the IMS device sends the second IMS parameter to the second core network device. Subsequently, the first core network device may send the second IMS parameter to the terminal device. In this way, the terminal device can realize the update of the IMS parameters.

In a possible implementation manner, the obtaining module is specifically configured to: and acquiring a first IMS parameter corresponding to the slice from the pre-stored corresponding relation between the slice information and the IMS parameter.

A seventh aspect provides a system for acquiring IMS parameters, including a terminal device, a first core network device, and an IMS device, where: a terminal device as described in the first aspect. A first core network device, such as the first core network device of the second aspect. The IMS device, as described in the third aspect.

In the embodiment of the application, first, a terminal device sends a first message to a first core network device, where the first message carries first information, and the first information is used for enabling the first core network device to send a first IMS parameter to the terminal device. And then, the first core network equipment acquires the first IMS parameters from the IMS equipment according to the first information and sends a second message to the terminal equipment, wherein the second message carries the first IMS parameters. And the terminal equipment receives the second message sent by the first core network equipment and stores the first IMS parameter. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

In an eighth aspect, there is provided a terminal device, comprising a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that the terminal device performs the method of the first aspect.

In a ninth aspect, there is provided a computer-readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect.

In a tenth aspect, a first core network device is provided, which includes a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that the first core network device executes the method of the second aspect.

In an eleventh aspect, there is provided a computer-readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of the second aspect.

In a twelfth aspect, an IMS device is provided, which includes a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that the IMS device performs the method of the third aspect.

In a thirteenth aspect, there is provided a computer-readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of the third aspect.

The embodiment of the application provides an IMS parameter obtaining method, and firstly, a terminal device sends a first message to a first core network device, wherein the first message carries first information, and the first information is used for enabling the first core network device to send a first IMS parameter to the terminal device. And then, the first core network equipment acquires the first IMS parameters according to the first information and sends a second message to the terminal equipment, wherein the second message carries the first IMS parameters. And the terminal equipment receives the second message sent by the first core network equipment and stores the first IMS parameter. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

Drawings

Fig. 1 is an architecture diagram of a communication network provided by an embodiment of the present application;

fig. 2 is a flowchart of an IMS parameter obtaining method according to an embodiment of the present disclosure;

fig. 3 is a flowchart of an update method of IMS parameters according to an embodiment of the present application;

fig. 4 is a flowchart of an example one of an IMS parameter obtaining method according to an embodiment of the present application;

fig. 5 is a flowchart of an example one of a method for updating IMS parameters according to an embodiment of the present application;

fig. 6 is a flowchart of an example two of an IMS parameter obtaining method according to an embodiment of the present application;

fig. 7 is a flowchart of an example two of an IMS parameter updating method according to an embodiment of the present application;

fig. 8 is a schematic structure of a terminal device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a first core network device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a first core network device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a first core network device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of an IMS device according to an embodiment of the present application;

fig. 14 is a schematic structure of a terminal device provided in an embodiment of the present application;

fig. 15 is a schematic structural diagram of a first core network device according to an embodiment of the present application;

fig. 16 is a structural schematic diagram of an IMS device according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides an IMS parameter acquisition method in a wireless communication network. As shown in fig. 1, an architecture diagram of a communication network provided in an embodiment of the present application, as shown in fig. 1, the communication network includes a terminal device 10, and a first core network device 20, a second core network device 30, and an IMS device 40 that are disposed in a core network. The terminal device 10, the first core network device 20, the second core network device 30, and the IMS device 40 communicate with each other. When the terminal device 10 acquires the IMS parameters, a first message is sent to the first core network device 20. The first message carries first information, and the first information is used for the first core network device 20 to send the first IMS parameter to the terminal device 10. After receiving the first message, the first core network device 20 sends a second message to the second core network device 30. The second message carries second information, and the second information is used for requesting IMS parameters. The second core network device 30 acquires the first IMS parameter from the IMS device 40, and sends a third message to the first core network device 20. The third message carries the first IMS parameter. After receiving the third message, the first core network device 20 sends a fourth message to the terminal device 10. The fourth message carries the first IMS parameter. The terminal device 10 automatically acquires the IMS parameters, thereby improving the efficiency of configuring the IMS parameters.

It should be noted that the communication network may be a communication network supporting a fourth generation (4G) access technology, for example, a Long Term Evolution (LTE) access technology; alternatively, the communication network may be a communication network supporting a fifth generation (5G) access technology, for example, a New Radio (NR) access technology; alternatively, the communication network may be a communication network supporting a third Generation (3G) access technology, such as universal mobile telecommunications network (UMTS) access technology, third Generation Partnership Project (3rd Generation Partnership Project, 3 GPP); or the communication network may also be a communication network of a second generation (2G) access technology, such as a global system for mobile communications (GSM) access technology; alternatively, the communication network may also be a communication network supporting a plurality of wireless technologies, such as a communication network supporting LTE technology and NR technology. In addition, the communication network may also be adapted for future oriented communication technologies.

The terminal Equipment 10 may be User Equipment (UE). The first core network device 20 may be an Access and Mobility Management Function (AMF) or a Session Management Function (SMF). The second core network device 30 may be a Positioning Calculation Function (PCF). The IMS device may be a Proxy-Call Session Control Function (P-CSCF), an IMS configuration server, an IMS application server, or the like.

The IMS parameters may include: voice over Long Term Evolution (VoLTE) based parameters and/or Voice over wireless Fidelity (VoWiFi) based parameters. Wherein, the VoLTE parameter may include: mobile Country Code (MCC), Mobile Network Code (MNC), IMS Access Point Name (APN) parameters (such as APN Name and APN internet protocol type), security parameters, Single Radio Voice Call Continuity (SRVCC) parameters, User Interface (UI) parameters (such as High Definition (HD) images), and the like. The VoWiFi parameters may include MCC, MNC, Internet Key Exchange (IKE) parameters, handover parameters, UI parameters (such as VoWiFi images), other feature parameters, APN, and the like.

The embodiment of the present application is introduced by taking a 3GPP communication network as an example, and other types of communication networks are similar to the 3GPP communication network, which is not described in detail herein. The embodiment of the application provides an IMS parameter obtaining method, which improves the efficiency of configuring IMS parameters, and as shown in fig. 2, the specific method flow is as follows:

step 201, the terminal device sends a first message to the first core network device.

The first message carries first information, and the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device.

Specifically, when the terminal device acquires the IMS parameter, a first message is sent to the first core network device. The first message carries first information, and the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device.

In order to be compatible with the flow of the existing 3GPP communication network, the terminal device obtains IMS parameters through a registration flow and a Protocol Data Unit (PDU) session establishment flow of the 3GPP communication network. The specific method comprises the following steps:

in the first mode, the terminal device obtains the IMS parameters through a registration procedure in the 3GPP communication network. At this time, the first core network device has access and mobility management functions. The first information includes at least one of voice domain preference information, information of a slice, IMS indication information, and IMS capability information.

Specifically, when the terminal device obtains the IMS parameters through the registration procedure of the 3GPP communication network, the first core network device needs to have access and mobility management functions. The first message is a message in a registration flow. The first information is information in a registration process. For example, the first core network device is an Access and Mobility Management Function (AMF) in the 3GPP communication network. The first message may be a registration request message. The first information may include at least one of voice domain preference information, information of a slice, IMS indication information, and IMS capability information.

Optionally, the parameters carried by the first information specifically include the following situations:

in a first case, when the first information includes at least one of IMS indication information and IMS capability information, the first information is used to enable the first core network device to send the first IMS parameters to the terminal device.

Specifically, the first information sent by the terminal device to the first core network device includes at least one of IMS indication information and IMS capability information. After the first core network equipment obtains the first information, the first information is determined to be used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment, and the first IMS parameters are obtained.

In the second case, when the first information includes voice domain preference information indicating that IMS prioritizes or only supports IMS, the first information is used to enable the first core network device to send the first IMS parameters to the terminal device.

Specifically, the first information sent by the terminal device to the first core network device includes voice domain preference information, and the voice domain preference information is set to be IMS-preferred or only support IMS. After the first core network equipment obtains the first information, the first information is determined to be used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment, and the first IMS parameters are obtained.

In a third case, when the first information includes information of a slice and the type of the slice is IMS, the first information is used to enable the first core network device to send the first IMS parameter to the terminal device.

Specifically, the first information sent by the terminal device to the first core network device includes information of a slice, and the type of the slice is set to be the IMS type. After the first core network equipment obtains the first information, the first information is determined to be used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment, and the first IMS parameters are obtained.

And in the second mode, the terminal equipment acquires the IMS parameters through a PDU session establishment flow of the 3GPP communication network. At this time, the first core network device has a session management function. The first information includes at least one of a data network name and information of the slice.

Specifically, when the terminal device obtains the IMS parameter through a PDU session establishment procedure of the 3GPP communication network, the first core network device needs to have a session management function. The first message is a message in the PDU session establishment flow. The first information is information in a PDU session establishment flow. For example, the first core network device may be a Session Management Function (SMF) in the 3GPP communication network; the first message may be a PDU session setup request message, and the first information may include at least one of information of a data network name and a slice.

Optionally, the parameters carried by the first information may specifically include the following situations:

in a first case, when the first information includes a data network name and the data network name is IMS, the first information is used to enable the first core network device to send the first IMS parameter to the terminal device.

Specifically, the first information sent by the terminal device to the first core network device includes a data network name, and the data network name is set to be IMS. After the first core network device obtains the first information, the first information is determined to be used for enabling the first core network device to send the first IMS parameters to the terminal device, and the first IMS parameters are obtained.

In the second case, when the first information includes information of a slice and the type of the slice is IMS, the first information is used to enable the first core network device to send the first IMS parameter to the terminal device.

Specifically, the first information sent by the terminal device to the first core network device includes information of a slice, and the type of the slice is set to be the IMS type. After the first core network device obtains the first information, the first information is determined to be used for enabling the first core network device to send the first IMS parameters to the terminal device, and the first IMS parameters are obtained.

Step 202, the first core network device receives a first message sent by the terminal device.

Wherein, the first information is carried in the first message.

Specifically, the first core network device receives a first message sent by the terminal device, and analyzes the first message to obtain first information carried in the first message.

Step 203, the first core network device determines whether the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device.

Specifically, after the first core network device obtains the first information, it is further determined whether the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device. If so, it indicates that the first core network device needs to acquire the first IMS parameter, and the specific method flow is detailed in step 204, which is not described herein again. Otherwise, the first core network device continues to execute other processing flows of the 3GPP communication network.

For the first mode in step 202, the first core network device has access and mobility management functions. The first information includes at least one of voice domain preference information, information of a slice, IMS indication information, and IMS capability information. When the parameters carried by the first information are different, the first core network device determines that the first information is used for making the first core network device send the first IMS parameters to the terminal device in a different manner, and the specific method flow is as follows:

for the first case in the first mode of step 202, the first information includes at least one of IMS indication information and IMS capability information. The first core network equipment determines that the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment.

Specifically, if the first information includes at least one of IMS indication information and IMS capability information, the first core network device determines that the first information is used to enable the first core network device to send the first IMS parameter to the terminal device, and further obtains the first IMS parameter.

For the second case in the first manner of step 202, the first information includes voice domain preference information, and the voice domain preference information indicates that IMS is preferred or only IMS is supported. The first core network equipment determines that the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment.

Specifically, if the first information includes voice domain preference information and the voice domain preference information is set to be IMS-preferred or only IMS-supported, the first core network device determines that the first information is used to enable the first core network device to send the first IMS parameter to the terminal device, and obtains the first IMS parameter.

For the third case in the first manner of step 202, the first information includes information of a slice, and the type of the slice is IMS. The first core network equipment determines that the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment.

Specifically, if the first information includes information of a slice, and the type of the slice is set to the IMS type. The first core network equipment determines first information used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment and obtains the first IMS parameters.

As to the second mode in step 202, the first core network device has a session management function, and the first information includes at least one of a data network name and slice information. When the parameters carried by the first information are different, the first core network device determines that the first information is used for making the first core network device send the first IMS parameters to the terminal device in a different manner, and the specific method flow is as follows:

for the first case in the second mode of step 202, the first information includes a data network name, and the data network name is IMS. The first core network equipment determines that the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment.

Specifically, if the first information includes a data network name and the data network name is set to be IMS. The first core network equipment determines first information used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment and obtains the first IMS parameters.

For the second case in the second mode of step 202, the first information includes information of a slice, and the type of the slice is IMS. The first core network equipment determines that the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment.

Step 204, the first core network device obtains the first IMS parameter.

In implementation, the first core network device determines that the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device, and then may obtain the first IMS parameter. The specific method comprises the following steps:

step one, the first core network device sends a fourth message to the second core network device.

And the fourth message carries second information, and the second information is used for requesting the first IMS parameter.

Specifically, the first core network device determines that the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device, and then further sends a fourth message to the second core network device. The fourth message carries second information, and the second information is used for requesting the first IMS parameter from the second core network device.

For the registration procedure and the PDU session establishment procedure in the 3GPP communication network, the fourth message may be a policy acquisition message, and the second message may be an IMS parameter request indication (IMS parameter request indication).

Optionally, when the first information includes information of a slice of an IMS type, the fourth message also carries the information of the slice, so that the second core network device obtains the first IMS parameter corresponding to the slice from the IMS device.

Specifically, if the first information includes information of a slice of an IMS type, the first core network device acquires a first IMS parameter corresponding to the slice. Therefore, when the first core network device sends the fourth message to the second core network device, the fourth message may carry information of the slice (for example, an identifier of the slice and an identifier of a tenant to which the slice belongs), so that the second core network device obtains the first IMS parameter corresponding to the slice from the IMS device according to the information of the slice.

And step two, the IMS equipment acquires the first IMS parameters stored in advance.

In implementation, the IMS device may store the first IMS parameter in advance. And after the second core network equipment obtains the second information, calling the IMS equipment to obtain the prestored first IMS parameters.

Optionally, when the first information includes information of a slice of an IMS type, the first IMS parameter is an IMS parameter corresponding to the slice, and the second method flow of the step is: the IMS equipment acquires a first IMS parameter corresponding to the slice from the pre-stored corresponding relation between the slice information and the IMS parameters.

Further, the IMS device may also store a correspondence between the IMS parameter and the slice information in advance. If the fourth message carries the information of the slice, the second core network device calls the IMS device to inquire the first IMS parameter corresponding to the slice in the corresponding relation according to the information of the slice.

And step three, the IMS equipment sends the first IMS parameters to the second core network equipment.

In implementation, after acquiring the first IMS parameter, the IMS device sends the first IMS parameter to the second core network device.

And step four, the second core network equipment sends a fifth message to the first core network equipment.

And the fifth message carries the first IMS parameter.

Specifically, the second core network device sends the fifth message to the first core network device after obtaining the first IMS parameter. The fifth message may carry the first IMS parameter.

The fifth message may be a policy acquisition response message for a registration procedure and a PDU session setup procedure of the 3GPP communication network.

It should be noted that, for the registration procedure of the 3GPP communication network, the second core network device may encapsulate the first IMS parameter into a PCF container (PCF container), and send the PCF container to the first core network device through the policy acquisition response message.

In addition, if the second core network device does not acquire the first IMS parameter or the 3GPP communication network does not support IMS, the fifth message sent by the second core network device to the first core network device may not carry the first IMS parameter or may carry third information, where the third information is used to indicate that the 3GPP communication network does not support IMS.

And step five, the first core network equipment receives a fifth message sent by the second core network equipment.

In implementation, the first core network device receives the fifth message sent by the second core network device, and may parse the fifth message to obtain the first IMS parameter.

Step 205, the first core network device sends a second message to the terminal device.

Wherein, the second message carries the first IMS parameter.

In implementation, after obtaining the first IMS parameter, the first core network device may send a second message to the terminal device. Wherein, the second message carries the first IMS parameter.

For a registration procedure in a 3GPP communication network, the second message may be a registration accept message. And after the first core network equipment obtains the first IMS parameter, the first core network equipment sends the first IMS parameter to the terminal equipment through the registration acceptance message. If the fifth message carries the PCF container, the first core network device may send the registration acceptance message to the terminal device, and then send the PCF container to the terminal device through a downlink non-Access Stratum Transport (downlink-Access-Stratum Transport) message.

For the PDU session establishment procedure in the 3GPP communication network, the second message may be a PDU session establishment accept message. After obtaining the first IMS parameter, the first core network device encapsulates the first IMS parameter into a Protocol Configuration Option (PCO) or an Enhanced Protocol Configuration Option (EPCO), and sends a PDU session establishment acceptance message to the terminal device.

Optionally, when the first information includes information of a slice of an IMS type, the first IMS parameter is an IMS parameter corresponding to the slice.

Specifically, when the first information sent by the terminal device to the first core network device includes information of a slice of an IMS type, the first IMS parameter carried in the second message sent by the first core network device to the terminal device is an IMS parameter corresponding to the slice.

It should be noted that, if the fifth message sent by the second core network device does not carry the first IMS parameter, the second message sent by the first core network device to the terminal device does not carry the first IMS parameter either; and if the fifth message sent by the second core network equipment carries the third information, the second message sent by the first core network equipment to the terminal equipment carries the third information.

In step 206, the terminal device receives the second message sent by the first core network device.

Wherein, the second message carries the first IMS parameter.

In implementation, the terminal device receives a second message sent by the first core network device, and analyzes the second message to obtain the first IMS parameter.

Step 207, the terminal device saves the first IMS parameter.

In implementation, after the terminal device obtains the first IMS parameter, the terminal device may store the first IMS parameter in a local storage device, so as to perform flows such as IMS registration and IMS session according to the IMS parameter.

It should be noted that, if the second message sent by the first core network device carries the first IMS parameter or the third information, the terminal device does not initiate flows such as IMS registration and IMS session.

The embodiment of the application provides an IMS parameter obtaining method, wherein a terminal device sends a first message to a first core network device, the first message carries first information, and the first information is used for enabling the first core network device to send a first IMS parameter to the terminal device. And then, the first core network equipment acquires the first IMS parameters according to the first information and sends a second message to the terminal equipment, wherein the second message carries the first IMS parameters. And the terminal equipment receives a second message sent by the first core network equipment and stores the first IMS parameter. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

The embodiment of the application also provides an IMS parameter updating method. As shown in fig. 3, the specific processing flow is as follows:

step 301, when detecting that the first IMS parameter is updated to the second IMS parameter, the IMS device sends the second IMS parameter to the second core network device.

In an implementation, when the IMS device detects that the first IMS parameter is updated to the second IMS parameter, the second IMS parameter may be sent to the second core network device.

Step 302, the second core network device sends a sixth message to the first core network device.

Wherein, the sixth message carries the second IMS parameter.

In implementation, after receiving the second IMS parameter, the second core network device may send a sixth message to the first core network device. Wherein, the sixth message carries the second IMS parameter.

In order to be compatible with the procedures of the existing 3GPP communication network, the terminal device may update the IMS parameters in the configuration update procedure and the PDU session modification procedure in the 3GPP communication network.

For a configuration update procedure in a 3GPP communication network, the sixth message may be a policy update message. The second core network device may encapsulate the second IMS parameter in the PCF container, and send the PCF container to the first core network device through the policy update message.

For a PDU session modification procedure in a 3GPP communication network, the sixth message may be a PDU session management policy modification message.

Step 303, the first core network device receives a sixth message sent by the second core network device.

And the sixth message carries the second IMS parameter.

In implementation, the first core network device receives a sixth message sent by the second core network device, and analyzes the sixth message to obtain the second IMS parameter.

Step 304, the first core network device sends a third message to the terminal device.

And the third message carries the second IMS parameter, so that the terminal equipment performs updating processing according to the second IMS parameter.

In implementation, after receiving the second IMS parameter, the first core network device may send a third message to the terminal device. And the third message carries the second IMS parameter.

For a configuration update procedure in a 3GPP communication network, the third message may be a configuration update command message. If the sixth message carries the PCF container, the first core network device may send the PCF container to the terminal device via a downlink non-access stratum transmission message after sending the configuration update command message to the terminal device.

For the PDU session modification procedure in the 3GPP communication network, the third message is a PDU session modification command message. After the first core network device obtains the second IMS parameter, the second IMS parameter is encapsulated to a Protocol Configuration Option (PCO) or an Enhanced Protocol Configuration Option (EPCO), and is sent to the terminal device through a PDU session modification command message.

Step 305, the terminal device receives a third message sent by the first core network device.

And the third message carries the second IMS parameter.

Specifically, the terminal device receives a third message sent by the first core network device, and analyzes the third message to obtain that the third message carries the second IMS parameter.

Step 306, the terminal device modifies the first IMS parameter into the second IMS parameter.

Specifically, after the terminal device obtains the second IMS parameter, the terminal device modifies the first IMS parameter into the second IMS parameter. The terminal device may perform the IMS registration, the IMS session, and the like according to the second IMS parameter.

It should be noted that, after updating the first IMS parameter, the terminal device sends an update completion message to the first core network device, after receiving the update completion message, the first core network device sends a policy update completion message to the second core network device, and when receiving the policy update completion message, the second core network device confirms that the terminal device is updated, and ends the update process.

The embodiment of the application provides an IMS parameter updating method. And when the IMS equipment detects that the first IMS parameter is updated to the second IMS parameter, the second IMS parameter is sent to the first core network equipment through the second core network equipment. And the first core network equipment forwards the second IMS parameters to the terminal equipment. And after receiving the second IMS parameter sent by the first core network equipment, the terminal equipment modifies the first IMS parameter into the second IMS parameter. The terminal equipment can update the IMS parameters in real time.

Fig. 4 is a flowchart of an example one of an IMS parameter obtaining method according to an embodiment of the present application. In this first example, a first IMS parameter corresponding to a slice is obtained by a terminal device through a registration procedure of a 3GPP communication network. The terminal device may be a UE, the first core network device may be an AMF, the second core network device may be a PCF, and the IMS device may be a P-CSCF. The 3GPP communication network further includes an Authentication service Function (AUSF) and a Unified Data Management entity (UDM). The specific method comprises the following steps:

in step 401, the UE sends a registration request message to the AMF.

The registration request message carries first information, wherein the first information comprises information of a slice and at least one of voice domain preference information, IMS indication information and IMS capability information.

Specifically, the UE sends a registration request message to the AMF through AN Access Network (AN).

Step 402, the UE performs authentication and security authentication with AMF, AUSF and UDM.

In step 403, the UDM registers and signs up with the AMF.

In step 404, the AMF determines whether the first information is used for the AMF to send the first IMS parameter to the UE.

In step 405, the AMF sends a policy acquisition message to the PCF.

The policy acquisition message carries an IMS parameter request indication and slicing information.

In step 406, the PFC obtains the first IMS parameter corresponding to the slice from the P-CSCF.

In step 407, the PCF sends a policy acquisition response message to the AMF.

And the strategy acquisition response message carries the first IMS parameter.

In step 408, the AMF sends a registration acceptance message to the UE.

The registration acceptance message carries the first IMS parameter.

Specifically, the AMF transmits a registration acceptance message to the UE through the AN.

In step 409, the UE saves the first IMS parameter.

The specific method flow from step 401 to step 409 is detailed in the specific method flow from step 201 to step 207, and is not described in detail herein.

Fig. 5 is a flowchart of an example one of a method for updating IMS parameters according to an embodiment of the present application. In this first example, the IMS device updates the first IMS parameter through a configuration update procedure of the 3GPP communication network. The terminal device may be a UE, the first core network device may be an AMF, the second core network device may be a PCF, and the IMS device may be a P-CSCF. The specific method comprises the following steps:

in step 501, the P-CSCF sends the second IMS parameters to the PCF.

At step 502, the PCF sends a policy update message to the AMF.

And the strategy updating message carries the second IMS parameter.

In step 503, the AMF sends a configuration update command message to the UE.

And the configuration updating command message carries the second IMS parameters.

Specifically, the AMF sends a configuration update command message to the UE through the AN.

In step 504, the UE modifies the first IMS parameter to a second IMS parameter.

In step 505, the UE sends a configuration update complete message to the AMF.

Specifically, the UE sends a configuration update complete message to the AMF through the AN.

At step 506, the AMF sends a policy update complete message to the PCF.

The specific method flow from step 501 to step 506 is detailed in the specific method flow from step 301 to step 305, and is not described in detail herein.

Fig. 6 is a flowchart of an example two of an IMS parameter obtaining method according to an embodiment of the present application. In the second example, the first IMS parameter corresponding to the slice is obtained by the terminal device through the PDU session establishment procedure of the 3GPP communication network. The terminal device may be a UE, the first core network device may be an SMF, the second core network device may be a PCF, and the IMS device may be a P-CSCF. The 3GPP communication network also includes a UDM and a User Plane Function (UPF). The specific method comprises the following steps:

in step 601, the UE sends a PDU session setup request message to the SMF.

The PDU session establishment request message carries first information, and the first information comprises slice information and a data network name.

Specifically, the UE sends a PDU session setup request message to the SMF through the AN and the AMF.

In step 602, the SMF registers and signs up with the UDM.

Step 603, the UE performs PDU session authentication and authorization with the SMF, UDM and UPF.

In step 604, the SMF determines whether the first information is used for the SMF to send the first IMS parameter to the UE.

In step 605, the SMF sends a policy acquisition message to the PCF.

Step 606, the PFC acquires the first IMS parameter corresponding to the slice from the P-CSCF.

In step 607, the PCF sends a policy acquisition response message to the SMF.

And the strategy acquisition response message carries the first IMS parameter.

At step 608, the SMF establishes a session with the UPF.

In step 609, the SMF sends a PDU session setup accept message to the UE.

And the PDU session establishment acceptance message carries the first IMS parameter.

Specifically, the SMF sends a PDU session establishment acceptance message to the UE through the AMF and the AN.

Step 6010, the UE saves the first IMS parameter.

The specific method flow from step 601 to step 6010 is detailed in the specific method flow from step 201 to step 207, and is not described in detail herein.

Fig. 7 is a flowchart of an example two of an update method of IMS parameters according to an embodiment of the present application. In the second example, the IMS device updates the first IMS parameter through the PDU session modification procedure of the 3GPP communication network. The terminal device may be a UE, the first core network device may be an SMF, the second core network device may be a PCF, and the IMS device may be a P-CSCF. The specific method comprises the following steps:

in step 701, the P-CSCF sends the second IMS parameters to the PCF.

At step 702, the PCF sends a session management policy modification message to the SMF.

And the session management strategy modification message carries a second IMS parameter.

In step 703, the SMF sends a PDU session modify command message to the UE.

And the PDU session modification command message carries a second IMS parameter.

Specifically, the SMF sends a PDU session modification command message to the UE through the AMF and the AN.

Step 704, the UE modifies the first IMS parameter to a second IMS parameter.

Step 705, the UE sends a PDU session modification command acknowledge message to the SMF.

Specifically, the UE sends a PDU session modification command acknowledge message to the SMF through the AN and the AMF.

At step 706, the SMF sends a PDU session management policy modification message to the PCF.

The specific method flow from step 701 to step 706 is detailed in the specific method flow from step 301 to step 305, and is not described in detail herein.

Based on the same technical concept, an embodiment of the present application further provides a terminal device, as shown in fig. 8, the terminal device includes:

a sending module 810, configured to send a first message to a first core network device, where the first message carries first information, and the first information is used to enable the first core network device to send a first internet protocol multimedia system IMS parameter to a terminal device;

a receiving module 820, configured to receive a second message sent by the first core network device, where the second message carries the first IMS parameter;

a saving module 830, configured to save the first IMS parameter.

In a possible implementation manner, the receiving module 820 is further configured to receive a third message sent by the first core network device, where the third message carries the second IMS parameter;

as shown in fig. 9, the terminal device further includes:

a modifying module 840 for modifying the first IMS parameter to the second IMS parameter.

In a possible implementation manner, when the first information includes at least one of IMS indication information and IMS capability information, the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device; or

It should be noted that the sending module 810 may be implemented by a plurality of other modules together to implement the method performed by the sending module, and similarly, the receiving module 820 may be implemented by a plurality of other modules together to implement the method performed by the receiving module.

Based on the same technical concept, an embodiment of the present application further provides a first core network device, as shown in fig. 10, where the first core network device includes:

a receiving module 1010, configured to receive a first message sent by a terminal device, where the first message carries first information;

a sending module 1020, configured to obtain a first internet protocol multimedia system IMS parameter if the first information is used to enable the first core network device to send the first IMS parameter to the terminal device;

the sending module 1020 is further configured to send a second message to the terminal device, where the second message carries the first IMS parameter.

In a possible implementation manner, the sending module 1020 is specifically configured to:

sending a fourth message to the second core network device, wherein the fourth message carries second information, and the second information is used for requesting the first IMS parameter, so that the second core network device acquires the first IMS parameter from the IMS device, and sends a fifth message to the first core network device, wherein the fifth message carries the first IMS parameter;

and receiving a fifth message sent by the second core network device.

In a possible implementation manner, the receiving module 1010 is further configured to receive a sixth message sent by the second core network device, where the sixth message carries the second IMS parameter;

the sending module 1020 is further configured to send a third message to the terminal device, where the third message carries the second IMS parameter, so that the terminal device performs update processing according to the second IMS parameter.

In a possible implementation manner, as shown in fig. 11, the first core network device further includes:

a first determining module 1030, configured to determine, by the first core network device, that the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device, if the first information includes at least one of IMS indication information and IMS capability information; or

In a possible implementation manner, as shown in fig. 12, the first core network device further includes:

the second determining module 1040 is further configured to, if the first information includes a data network name and the data network name is IMS, determine, by the first core network device, that the first information is used to enable the first core network device to send the first IMS parameter to the terminal device; or

It should be noted that the receiving module 1010 may be implemented by a plurality of other modules together to implement the method performed by the receiving module, and similarly, the sending module 1020 may be implemented by a plurality of other modules together to implement the method performed by the sending module.

In addition, the above methods performed by the first determining module 1030 and the second determining module 1040 may be implemented by any one of the first determining module 1030 and the second determining module 1040 separately.

Based on the same technical concept, an embodiment of the present application further provides an IMS device, as shown in fig. 13, where the IMS device includes:

an obtaining module 1310, configured to obtain a prestored first internet protocol multimedia system IMS parameter;

a sending module 1320, configured to send the first IMS parameter to a second core network device.

In a possible implementation manner, the sending module 1320 is further configured to send the second IMS parameter to a second core network device when it is detected that the first IMS parameter is updated to the second IMS parameter.

In a possible implementation manner, the obtaining module 1310 is specifically configured to:

and acquiring a first IMS parameter corresponding to the slice from a pre-stored corresponding relation between the slice information and the IMS parameter.

In the embodiment of the application, the terminal device sends a first message to the first core network device, where the first message carries first information, and the first information is used for enabling the first core network device to send the first IMS parameter to the terminal device. And then, the first core network equipment acquires the first IMS parameters according to the first information and sends a second message to the terminal equipment, wherein the second message carries the first IMS parameters. And the terminal equipment receives the second message sent by the first core network equipment and stores the first IMS parameter. Therefore, the terminal equipment can automatically acquire the IMS parameters without the need of technical personnel for configuration, and the efficiency of configuring the IMS parameters is improved.

It should be noted that the sending module 1320 may be implemented by a plurality of other modules together to implement the above-mentioned method executed by the sending module.

Based on the same technical concept, an embodiment of the present application further provides a system for acquiring IMS parameters, where the system includes a terminal device, a first core network device, and an IMS device, where:

the terminal equipment is the terminal equipment in the embodiment;

the first core network device is the first core network device in the above embodiment;

the IMS device is the IMS device in the above embodiment.

Based on the same technical concept, the embodiment of the present application further provides a terminal device, as shown in fig. 14, the terminal device includes a memory 1401 and a processor 1402, the memory 1401 is used for storing a computer program, and the processor 1402 is used for calling and running the computer program from the memory 1401, so that the terminal device executes the method executed by the terminal device.

Based on the same technical concept, embodiments of the present application also provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method performed by the terminal device.

Based on the same technical concept, the embodiment of the present application further provides a first core network device, as shown in fig. 15, the first core network device includes a memory 1501 and a processor 1502, the memory 1501 is used for storing a computer program, and the processor 1502 is used for calling and running the computer program from the memory 1501, so that the first core network device executes the method executed by the first core network device.

Based on the same technical concept, embodiments of the present application further provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method performed by the first core network device.

Based on the same technical concept, the embodiment of the present application further provides an IMS device, as shown in fig. 16, the IMS device includes a memory 1601 and a processor 1602, the memory 1601 is used for storing a computer program, and the processor 1602 is used for calling and running the computer program from the memory 1601, so that the IMS device executes the method executed by the IMS device.

Based on the same technical concept, embodiments of the present application also provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method performed by the IMS apparatus as described above.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An internet protocol multimedia system (IMS) parameter obtaining method is characterized by comprising the following steps:

a terminal device sends a first message to a first core network device, wherein the first message carries first information, and the first information is used for enabling the first core network device to send a first IMS parameter to the terminal device;

the terminal equipment receives a second message sent by the first core network equipment, wherein the second message carries the first IMS parameter;

the terminal equipment stores the first IMS parameter;

when the first core network device has access and mobility management functions, the first information includes at least one of voice domain preference information, slice information, IMS indication information, and IMS capability information, and the first message is a message sent by the terminal device to the first core network device in a registration procedure of a communication network; or

When the first core network device has a session management function, the first information includes at least one of a data network name and slice information, and the first message is a message sent by the terminal device to the first core network device in a protocol data unit PDU session establishment procedure.

2. The method of claim 1, further comprising:

the terminal equipment receives a third message sent by the first core network equipment, wherein the third message carries a second IMS parameter;

and the terminal equipment modifies the first IMS parameter into the second IMS parameter.

3. The method of claim 1, wherein when the first information comprises information of a slice of an IMS type, the first IMS parameter is an IMS parameter corresponding to the slice.

4. The method of claim 1,

when the first information includes at least one of the IMS indication information and the IMS capability information, the first information is used to enable the first core network device to send first IMS parameters to the terminal device; or

When the first information comprises the voice domain preference information and the voice domain preference information indicates that the IMS preferentially or only supports the IMS, the first information is used for enabling the first core network equipment to send first IMS parameters to the terminal equipment; or

And when the first information comprises the information of the slice and the type of the slice is IMS, the first information is used for enabling the first core network device to send first IMS parameters to the terminal device.

5. The method of claim 1,

when the first information includes the data network name and the data network name is IMS, the first information is used to enable the first core network device to send first IMS parameters to the terminal device; or

6. An internet protocol multimedia system (IMS) parameter obtaining method is characterized by comprising the following steps:

a first core network device receives a first message sent by a terminal device, wherein the first message carries first information; if the first information is used for enabling the first core network equipment to send the first IMS parameters to the terminal equipment, the first core network equipment acquires the first IMS parameters;

the first core network equipment sends a second message to the terminal equipment, wherein the second message carries the first IMS parameter;

7. The method of claim 6, wherein the obtaining, by the first core network device, the first IMS parameter comprises:

the first core network device sends a fourth message to a second core network device, wherein the fourth message carries second information, the second information is used for requesting the first IMS parameter, so that the second core network device obtains the first IMS parameter from the IMS device and sends a fifth message to the first core network device, and the fifth message carries the first IMS parameter;

and the first core network equipment receives a fifth message sent by the second core network equipment.

8. The method of claim 6, further comprising:

the first core network equipment receives a sixth message sent by the second core network equipment, wherein the sixth message carries a second IMS parameter;

and the first core network equipment sends a third message to the terminal equipment, wherein the third message carries the second IMS parameter, so that the terminal equipment performs updating processing according to the second IMS parameter.

9. The method of claim 6, further comprising:

if the first information comprises at least one of the IMS indication information and the IMS capability information, the first core network device determines that the first information is used for enabling the first core network device to send first IMS parameters to the terminal device; or

If the first information comprises the voice domain preference information, and the voice domain preference information indicates that the IMS preferentially or only supports the IMS, the first core network device determines that the first information is used for enabling the first core network device to send first IMS parameters to the terminal device; or

If the first information includes the information of the slice and the type of the slice is IMS, the first core network device determines that the first information is used for enabling the first core network device to send a first IMS parameter to the terminal device.

10. The method of claim 6, further comprising:

if the first information comprises the data network name and the data network name is IMS, the first core network device determines that the first information is used for enabling the first core network device to send first IMS parameters to the terminal device; or

11. The method of claim 6, wherein when the first information comprises information of a slice of an IMS type, the first IMS parameter is an IMS parameter corresponding to the slice.

12. The method according to claim 7, wherein when the first information includes information of a slice of an IMS type, the fourth message further carries the information of the slice, so that the second core network device obtains the first IMS parameter corresponding to the slice from an IMS device.

13. An internet protocol multimedia system (IMS) parameter obtaining method is characterized by comprising the following steps:

the method comprises the steps that IMS equipment obtains a first IMS parameter corresponding to a slice from a corresponding relation between pre-stored slice information and IMS parameters;

and the IMS equipment sends the first IMS parameters to second core network equipment.

14. The method of claim 13, further comprising:

and when detecting that the first IMS parameter is updated to a second IMS parameter, the IMS equipment sends the second IMS parameter to second core network equipment.

15. A terminal device, characterized in that the terminal device comprises:

a sending module, configured to send a first message to a first core network device, where the first message carries first information, and the first information is used to enable the first core network device to send a first internet protocol multimedia system IMS parameter to a terminal device;

a receiving module, configured to receive a second message sent by the first core network device, where the second message carries the first IMS parameter;

a saving module, configured to save the first IMS parameter;

16. The terminal device of claim 15, wherein the receiving module is further configured to receive a third message sent by the first core network device, where the third message carries a second IMS parameter;

the terminal device further includes:

a modification module for modifying the first IMS parameter to the second IMS parameter.

17. The terminal device according to claim 15, wherein when the first information includes information of a slice of an IMS type, the first IMS parameter is an IMS parameter corresponding to the slice.

18. The terminal device of claim 15,

19. The terminal device of claim 15,

20. A first core network device, wherein the first core network device comprises:

the receiving module is used for receiving a first message sent by a terminal device, wherein the first message carries first information;

a sending module, configured to obtain a first internet protocol multimedia system IMS parameter if the first information is used to enable the first core network device to send the first IMS parameter to the terminal device;

the sending module is further configured to send a second message to the terminal device, where the second message carries the first IMS parameter;

21. The first core network device of claim 20, wherein the sending module is specifically configured to:

sending a fourth message to a second core network device, where the fourth message carries second information, and the second information is used to request the first IMS parameter, so that the second core network device obtains the first IMS parameter from the IMS device, and sends a fifth message to the first core network device, where the fifth message carries the first IMS parameter;

and receiving a fifth message sent by the second core network device.

22. The first core network device of claim 20, wherein the receiving module is further configured to receive a sixth message sent by a second core network device, where the sixth message carries a second IMS parameter;

the sending module is further configured to send a third message to the terminal device, where the third message carries the second IMS parameter, so that the terminal device performs update processing according to the second IMS parameter.

23. The first core network device of claim 20, wherein the first core network device further comprises:

a first determining module, configured to determine, if the first information includes at least one of the IMS indication information and the IMS capability information, that the first information is used for enabling the first core network device to send a first IMS parameter to the terminal device; or

24. The first core network device of claim 20, wherein the first core network device further comprises:

a second determining module, configured to determine, if the first information includes the data network name and the data network name is IMS, that the first information is used to enable the first core network device to send a first IMS parameter to the terminal device; or

25. The first core network device according to claim 20, wherein when the first information includes information of a slice of an IMS type, the first IMS parameter is an IMS parameter corresponding to the slice.

26. The first core network device of claim 21, wherein when the first information includes information of a slice of an IMS type, the fourth message further carries the information of the slice, so that the second core network device obtains the first IMS parameter corresponding to the slice from an IMS device.

27. An internet protocol multimedia system, IMS, device, the IMS device comprising:

the acquisition module is used for acquiring a first IMS parameter corresponding to a slice from a corresponding relation between pre-stored slice information and IMS parameters;

and the sending module is used for sending the first IMS parameter to second core network equipment.

28. The IMS device of claim 27, wherein the sending module is further configured to send the second IMS parameter to a second core network device when it is detected that the first IMS parameter is updated to the second IMS parameter.

29. A system for obtaining Internet protocol multimedia system IMS parameters is characterized in that the system comprises a terminal device, a first core network device and an Internet protocol multimedia system IMS device, wherein:

the terminal device, the terminal device of any one of the claims 1-5;

the first core network device, the first core network device of any of the claims 6-12;

the IMS device, the IMS device of any one of claims 13 to 14.

30. A terminal device, comprising a memory for storing a computer program and a processor for retrieving from the memory and executing the computer program, such that the terminal device performs the method of any one of claims 1 to 5.

31. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1-5.

32. A first core network device, comprising a memory for storing a computer program and a processor for retrieving and running the computer program from the memory, such that the first core network device performs the method of any of claims 6-12.

33. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 6-12.

34. An internet protocol multimedia system, IMS, device comprising a memory for storing a computer program and a processor for invoking and running the computer program from the memory such that the IMS device performs the method of any of claims 13-14.

35. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 13-14.