CN110166537B - PDU session establishment method, network equipment and user terminal - Google Patents
PDU session establishment method, network equipment and user terminal Download PDFInfo
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- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
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Abstract
The application discloses a PDU session establishment method, network equipment and a user terminal, relates to the technical field of communication, and is used for reducing network time delay. The method comprises the following steps: the network equipment receives a registration request message from a user terminal, wherein the registration request message contains indication information, and the indication information is used for indicating an application scene of the user terminal; and the network equipment determines whether to trigger a PDU session establishment process with the user terminal according to the application scene. The embodiment of the application is applied to the establishment of the PDU session.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a protocol data unit PDU session establishment method, a network device, and a user terminal.
Background
In a fourth generation (4th generation, 4G) network, when a user terminal is attached to the network, a core network automatically initiates a bearer establishment request to establish a default bearer between the user terminal and a data network, and when service transmission is required between the user terminal and the data network, data interaction can be directly performed through the default bearer, so that the response speed of the service is increased, and the time delay of the network is reduced.
In the 5th generation (5G) network, because of the addition of multiple service scenarios, it cannot establish a bearer similar to 4G when a user registers in the network, for example, in a massive machine type of communication (mtc) scenario, because the number of connected users is huge and the requirement on delay is not high, if all users establish a bearer similar to 4G when registering in the network, the signaling overhead is huge and the occupation of network resources is also large, so when defining the registration flow of 5G, the international organization for standardization third generation partnership project (3 GPP) does not directly establish a default bearer as in the 4G network. Therefore, in a common 5G registration scenario, the network side does not directly establish a Protocol Data Unit (PDU) session for data transmission for the user, and only when the user or the network side needs, an additional PDU session establishment procedure is initiated. This causes that in the actual network service interaction, the user needs to complete the registration first, then initiates the PDU session request by himself when there is a service, and after the PDU session is established, the user can perform the service interaction, which has a certain influence on the network delay.
Disclosure of Invention
Embodiments of the present application provide a PDU session establishment method, a network device, and a user terminal, which are used to solve the effect of separately establishing a PDU session in a 5G network on the network delay, and reduce the network delay.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, an embodiment of the present application provides a PDU session establishment method, where the method includes:
the network equipment receives a registration request message from a user terminal, wherein the registration request message contains indication information, and the indication information is used for indicating an application scene of the user terminal;
and the network equipment determines whether to trigger a PDU session establishment process with the user terminal according to the application scene.
In a second aspect, an embodiment of the present application provides a PDU session establishment method, where the method includes:
the method comprises the steps that a user terminal determines indication information, wherein the indication information is used for indicating an application scene of the user terminal;
and the user terminal sends a registration request message to network equipment, wherein the registration request message comprises the indication information.
In a third aspect, an embodiment of the present application provides a network device, configured to execute the PDU session establishment method according to the first aspect, where the network device includes:
a transceiver module, configured to receive a registration request message from a user side, where the registration request message includes indication information, and the indication information is used to indicate an application scenario of the user terminal;
and the processing module is used for determining whether to trigger a PDU session establishment process with the user terminal according to the application scene.
In a fourth aspect, an embodiment of the present application provides a user equipment, configured to perform the PDU session establishment method according to the second aspect, where the user equipment includes:
the processing module is used for determining indication information, wherein the indication information is used for indicating an application scene of the user terminal;
a transceiver module, configured to send a registration request message to a network device, where the registration request message includes the indication information determined by the processing module.
In a fifth aspect, there is provided a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the PDU session establishment method according to the first or second aspect.
A sixth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a PDU session establishment method as described in the first or second aspect.
In a seventh aspect, a network device is provided, including: the processor and the memory, the memory is used for storing programs, and the processor calls the programs stored in the memory to execute the PDU session establishment method described in the first aspect.
In an eighth aspect, there is provided a user terminal comprising: and the processor calls the program stored in the memory to execute the PDU session establishment method according to the second aspect.
According to the PDU session establishment method, the network equipment and the user terminal, when the user terminal registers to the network equipment, the indication information indicating the application scene of the user terminal is added into the registration request message, and the network equipment determines whether to trigger the PDU session establishment process with the user terminal or not by identifying the value of the indication information. By the method, whether the PDU session is established for the user terminal when the user terminal is registered is determined according to the application scene of the user terminal, so that the influence of the 5G user on the network delay caused by the fact that the PDU session can be initiated only when a service occurs is avoided, and the network delay is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic hardware structure diagram of a network device according to an embodiment of the present application;
fig. 3 is a schematic hardware structure diagram of a user terminal according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a user terminal according to an embodiment of the present application;
fig. 6 is a first flowchart illustrating a PDU session establishment method according to an embodiment of the present application;
fig. 7 is a content diagram of a registration type of a 5G system provided in an embodiment of the present application;
fig. 8 is a flowchart illustrating a PDU session establishment method according to an embodiment of the present application;
fig. 9 is a third flowchart illustrating a PDU session establishment method according to an embodiment of the present application.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present application provides a communication system. The system comprises a network device 10 and a user terminal 20. The network device 10 may be an access and mobility management function (AMF), and the user terminal 20 may be a mobile phone, a notebook computer, a personal digital assistant, a wearable mobile electronic device, and smart furniture.
The network device 10 may be connected to the user terminal 20 by wireless. The client 20 can send a registration request message to the network device 10 through a wireless network or the like, and after receiving the registration request message, the network device 10 identifies a cell therein to execute a Protocol Data Unit (PDU) session establishment method.
As shown in fig. 2, an embodiment of the present application provides a hardware structure diagram of the network device. The network device 10 includes one or more processors 101, memory 102, a communication interface 103, and a communication bus 104.
The processor 101 is configured to execute computer-executable instructions stored in the memory 102, so as to implement the steps or actions of the PDU session establishment method in the following embodiments of the present application. The memory 102 is used for storing computer-executable instructions for performing the present solution and is controlled by the processor 101 for execution. The communication interface 103 is used for performing message interaction with a Radio Access Network (RAN) and a Session Management Function (SMF). Communication bus 104 is used to transfer information between the various components of network device 10.
As shown in fig. 3, the structure of the user terminal will be described by taking a terminal device as an example.
The user terminal 20 may include: radio Frequency (RF) circuit 210, memory 220, input unit 230, display unit 240, sensor 250, audio circuit 260, wireless fidelity (Wi-Fi) module 270, processor 280, bluetooth module 281, and power supply 290.
The RF circuit 210 may be used for receiving and transmitting signals during information transmission and reception or during a call, and may receive downlink data of a base station and then send the downlink data to the processor 280 for processing; the uplink data may be transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
Memory 220 may be used to store software programs and data. The processor 280 performs various functions of the user terminal 20 and data processing by executing software programs or data stored in the memory 220. The memory 220 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. The memory 220 stores an operating system enabling the user terminal 20 to operate, such as appleDeveloped by a company
Operating System, developed by Google
Open source operating system, developed by Microsoft corporation
An operating system, etc. The memory 220 may store an operating system and various application programs, and may also store codes for performing the methods according to the embodiments of the present application.
The input unit 230, such as a touch screen, may be used to receive input numeric or character information, generate signal inputs related to user settings and function control of the user terminal 20. Specifically, the input unit 230 may include a touch screen 231 disposed on the front surface of the user terminal 20, and may collect a touch operation by the user thereon or nearby.
The display unit 240 (i.e., a display screen) may be used to display information input by or provided to the user and a Graphical User Interface (GUI) of various menus of the user terminal 20. The display unit 240 may include a display screen 241 disposed on the front surface of the user terminal 20. The display 241 may be configured in the form of a liquid crystal display, a light emitting diode, or the like. The display unit 240 may be used to display various graphical user interfaces described herein. The touch screen 231 may be covered on the display screen 241, or the touch screen 231 and the display screen 241 may be integrated to implement the input and output functions of the user terminal 20, and after the integration, the touch screen may be referred to as a touch display screen for short.
The user terminal 20 may also include at least one sensor 250, such as a light sensor, a motion sensor. The terminal device 105 may also be configured with other sensors such as a gyroscope, barometer, hygrometer, thermometer, infrared sensor, and the like.
The audio circuitry 260, speaker 261, and microphone 262 may provide an audio interface between a user and the user terminal 20. The audio circuit 260 may transmit the electrical signal converted from the received audio data to the speaker 261, and convert the electrical signal into a sound signal by the speaker 261 and output the sound signal; on the other hand, the microphone 262 converts the collected sound signals into electrical signals, which are received by the audio circuit 260 and converted into audio data, which are then output to the RF circuit 210 for transmission to, for example, another terminal, or output to the memory 220 for further processing.
Wi-Fi is a short-range wireless transmission technology, and the user terminal 20 may help a user to send and receive e-mails, browse web pages, access streaming media, etc. through the Wi-Fi module 270, which provides a wireless broadband internet access for the user.
The processor 280 is a control center of the user terminal 20, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the user terminal 20 and processes data by running or executing software programs stored in the memory 220 and calling data stored in the memory 220. Processor 280 may refer to one or more processors herein, and processor 280 may include one or more processing units; the processor 280 may also integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a baseband processor, which primarily handles wireless communications. It will be appreciated that the baseband processor described above may not be integrated into the processor 280. The processor 280 may run an operating system, an application program, a user interface display, and a touch response, as well as the methods described in the embodiments of the present application.
And the bluetooth module 281 is used for performing information interaction with other bluetooth devices having the bluetooth module through a bluetooth protocol. For example, the user terminal 20 may establish a bluetooth connection with a wearable electronic device (e.g., a smart watch) having a bluetooth module through the bluetooth module 281, so as to perform data interaction.
The user terminal 20 also includes a power supply 290 (such as a battery) for powering the various components. The power supply may be logically coupled to the processor 280 through a power management system to manage charging, discharging, and power consumption functions through the power management system.
As shown in fig. 4, an embodiment of the present application provides a schematic structural diagram of the foregoing network device, where the network device 10 includes: a transceiver module 11 and a processing module 12.
Specifically, the transceiver module 11 may implement a transmitting and/or receiving function through the communication interface 103 in the network device 10 shown in fig. 2, and the processing module 12 may invoke a computer execution instruction stored in the memory 102 through the processor 101 in the network device 10 shown in fig. 2 to implement the PDU session establishment method according to the following embodiment of the present application.
As shown in fig. 5, an embodiment of the present application provides a schematic structural diagram of the user terminal, where the user terminal 20 includes: a transceiver module 21 and a processing module 22.
Specifically, the transceiver module 21 may implement the transmitting and/or receiving function through the RF circuit 210 of the user terminal 20 shown in fig. 3, and the processing module 12 may invoke the computer-executable instructions stored in the memory 220 through the processor 280 in the user terminal 20 shown in fig. 3 to implement the PDU session establishment method according to the following embodiment of the present application.
Examples 1,
Fig. 6 is a flowchart illustrating a PDU session establishment method according to an embodiment of the present application, which is applied to the communication system shown in fig. 1. The PDU session establishment method specifically comprises the following steps:
s401, the user terminal determines the indication information.
Specifically, the processing module 22 of the user terminal 20 determines indication information, where the indication information is used to indicate an application scenario of the user terminal 20.
The application scenario of the 5G user terminal 20 defined on the conference of 3GPP includes: enhanced mobile broadband (eMBB), ultra-high reliable and ultra-low latency communication (uRLLC), and massive machine type communication (mMTC).
The application scenario of the user terminal 20 is indicated by the indication information to distinguish different application scenarios, and the network device 10 may determine whether to establish the PDU session for the user terminal 20 at the time of registration according to the indication information.
S402, the user terminal sends a registration request message to the network equipment.
Specifically, the transceiver module 21 of the user terminal 20 sends a registration request message to the network device. Wherein the registration request message includes indication information.
Illustratively, the indication information may be indicated in two ways:
in one mode, the indication information may be carried by a slice/service type (SST) cell in a single-network slice selection assistance information (S-NSSAI) that requests a network slice selection assistance information (requested NSSAI) in a registration request message. According to the 3GPP specifications, SST takes values as shown in table 1:
TABLE 1
| Slice/service type | Value taking | Characteristics of |
| Enhanced |
1 | Slice suitable for 5G enhanced mobile broadband processing |
| Ultra-high reliability ultra-low |
2 | Slicing suitable for ultra-reliable low-delay communication processing |
| Large-scale internet of |
3 | Section suitable for processing large-scale internet of things |
The requested NSSAI is specified as an optional item in 3GPP, and telecom operators and equipment manufacturers can define the requested NSSAI in the registration request message as a necessary item according to needs, thereby achieving the purpose of indicating application scenes.
In another way, as shown in fig. 7, according to the requirement of the 3GPP specification, a 5G system registration type (5GS registration type) must be included in the registration request message of the ue to indicate the registration type, where the registration type includes a 5G system registration type information element identifier (5G-system registration type information identifier), a 5G system registration type content length (5G-system registration type contents), two spare bits of 0, a radio access network radio capability update (NG-RAN-radio-capability update), a subsequent request (follow-on request), a short message service request (short message service request), and a value of the 5G system registration type (5G-system registration type). Wherein, the definition of the value of 5GS registration type is specified as table 2:
TABLE 2
Wherein, there are 3 kinds of values undefined except 111: 000. 101, 110. At present, the network side identifies the three values according to 001, and defines and modifies the three values, for example, 000 is defined as eMBB, 101 is defined as uRLLC, and 110 is defined as mMTC, so as to achieve the purpose of indicating an application scene.
Illustratively, the user terminal 20 may send a registration request message to the AMF through the RAN, where the registration request message carries a 5GS registration type information element, and the 5GS registration type information element is indication information.
S403, the network device receives a registration request message from the user terminal.
Specifically, the transceiver module 11 of the network device 10 receives a registration request message from the user terminal 20. The registration request message includes indication information indicating an application scenario of the user terminal 20.
S404, the network equipment determines whether to trigger a PDU session establishment process with the user terminal according to the application scene.
Specifically, the processing module 12 of the network device 10 determines whether to trigger a PDU session establishment procedure with the user terminal 20 according to the application scenario.
The network device 10 may store a processing policy corresponding to the value of the indication information, and is configured to determine whether to trigger a PDU session establishment request with the user terminal 20 after identifying the value of the indication information.
Optionally, when the application scenario is eMBB or urrllc, the network device 10 determines to trigger a PDU session establishment procedure with the user terminal 20.
Optionally, when the application scenario is mtc, the network device 10 determines not to trigger a PDU session establishment procedure with the user terminal 20.
For example, when the value of the indication information 5GS registration type in the registration request message is 000, the network device 10 may determine that the corresponding application scenario is eMBB according to the indication information, and determine to trigger a PDU session establishment procedure with the user terminal 20.
In an application scenario of the eMBB or the urrllc, a user is sensitive to a network delay, and therefore, in this case, a PDU session establishment procedure with the user terminal 20 may be triggered when the user terminal 20 registers through the network device 10, so as to further reduce the network delay and improve user experience. In the application scenario of mtc, because the number of connected users is huge, but the requirement on the network delay is not high, it is not necessary for the network device 10 to establish a PDU session for the user terminal 20 when the user terminal 20 registers, and the user terminal 20 may establish a PDU session with the network device 10 according to the existing flow when necessary.
Illustratively, the network device 10 may process according to the following policies: when the value of the SST is 1 or 2, the network device 10 triggers a PDU session establishment procedure with the user terminal 20, and when the value of the SST is 3, the network device 10 does not trigger the PDU session establishment procedure with the user terminal 20; when the value of the 5GS registration type is 000 or 101, the network device 10 triggers a PDU session establishment procedure with the user terminal 20, and when the value of the 5GS registration type is 110, the network device 10 does not trigger the PDU session establishment procedure with the user terminal 20.
According to the PDU session establishment method provided by the embodiment of the application, when the user terminal registers to the network equipment, the indication information indicating the application scene of the user terminal is added into the registration request message, and the network equipment determines whether to trigger the PDU session establishment process with the user terminal or not by identifying the value of the indication information. By the method, whether the PDU session is established for the user terminal when the user terminal is registered is determined according to the application scene of the user terminal, so that the influence of the 5G user on the network delay caused by the fact that the PDU session can be initiated only when a service occurs is avoided, and the network delay is reduced.
Optionally, as shown in fig. 8, S405-S407 is further included after S404, and is configured to, when the application scenario is eMBB or urrllc, establish a PDU session between the network device 10 and the user terminal 20:
s405, the network equipment sends a session establishment request to the user terminal.
Specifically, the transceiver module 11 of the network device 10 sends a session establishment request to the user terminal 20. Wherein the session establishment request is used to instruct the user terminal 20 to initiate a PDU session establishment procedure to the network device 10.
For example, when the application scenario of the user terminal 20 is eMBB, the AMF may send a device trigger request (device trigger request) to the user terminal 20 through the RAN after completing corresponding steps of a conventional registration procedure of the user terminal 20, so as to instruct the user terminal 20 to initiate a PDU session establishment procedure to the network device 10 through the RAN.
S406, the user terminal receives a session establishment request from the network device.
Specifically, the transceiver module 21 of the user terminal 20 receives a session establishment request from the network device 10. Wherein the session establishment request is used to instruct the user terminal 20 to initiate a PDU session establishment procedure to the network device 10.
S407, the user terminal initiates a PDU session establishment flow to the network device according to the session establishment request.
Specifically, the processing module 22 of the user terminal 20 initiates a PDU session establishment procedure to the network device 10 according to the session establishment request.
After the network device 10 sends a session establishment request to the user terminal 20, the user terminal 20 initiates a PDU session establishment procedure to the network device 10, and the relevant signaling messages used in this way are possessed by the current 3GPP specifications, the mechanism thereof is also closer to the current 3GPP specifications, and the difficulty in network modification is small.
Optionally, as shown in fig. 9, after S404, S408-S410 are further included, configured to, when the application scenario is eMBB or urrllc, establish a PDU session between the network device 10 and the user terminal 20:
s408, the network equipment initiates a PDU session establishment flow.
Specifically, the processing module 12 of the network device 10 initiates a PDU session establishment procedure.
For example, when the application scenario of the ue 20 is eMBB, the AMF may select a suitable SMF, send an Nsmf _ pdussion _ CreateSMContext Request message to the SMF, the SMF returns an Nsmf _ pdussion _ CreateSMContext Response message in Response to the message, and after completing the corresponding steps of the conventional registration procedure of the ue 20, the AMF and the SMF perform the corresponding steps of the PDU session establishment procedure.
S409, after the network equipment completes the PDU session establishment process, the related information of the PDU session is sent to the user terminal.
Specifically, after the processing module 12 completes the PDU session establishment procedure, the transceiver module 11 of the network device 10 sends the PDU session related information to the user terminal 20.
Illustratively, after the AMF and the SMF complete the corresponding steps of the PDU session Establishment procedure of the user terminal 20, the AMF notifies the user terminal 20 of the PDU session related information through the RAN using a PDU session _ update access message.
S410, the user terminal receives the related information of the PDU conversation from the network equipment.
Specifically, the transceiver module 21 of the user terminal 20 receives the information related to the PDU session from the network device 10.
The network device 10 initiates a PDU session establishment procedure according to the application scenario of the user terminal 20, and sends related information of the PDU session to the user terminal 20 after the PDU session establishment procedure is completed. This approach requires the network device 10 to have the capability of initiating the PDU session establishment, which is not provided in the existing 3GPP specification, and requires a great modification to the network, and the user terminal 20 also needs to have a corresponding function mechanism. The operator can decide what way to establish the PDU session according to the actual situation.
Embodiments of the present application provide a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform a PDU session setup method as described in fig. 6, fig. 8, and fig. 9.
Embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform a PDU session establishment method as described in fig. 6, fig. 8 and fig. 9.
An embodiment of the present application provides a network device, including: a processor and a memory, the memory for storing a program, the processor calling the program stored in the memory to perform the PDU session setup method as described in fig. 6, fig. 8 and fig. 9.
An embodiment of the present application provides a user terminal, including: a processor and a memory, the memory for storing a program, the processor calling the program stored in the memory to perform the PDU session setup method as described in fig. 6, fig. 8 and fig. 9.
Since the PDU session establishment apparatus, the computer-readable storage medium, and the computer program product in the embodiments of the present application may be applied to the PDU session establishment method, the technical effect obtained by the PDU session establishment apparatus may also refer to the embodiments of the method, and the embodiments of the present application are not described herein again.
The above units may be individually configured processors, or may be implemented by being integrated into one of the processors of the controller, or may be stored in a memory of the controller in the form of program codes, and the functions of the above units may be called and executed by one of the processors of the controller. The processor described herein may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present Application.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Claims (10)
1. A Protocol Data Unit (PDU) session establishment method, comprising:
the network equipment receives a registration request message from a user terminal, wherein the registration request message contains indication information, and the indication information is used for indicating an application scene of the user terminal;
the application scene comprises the following steps: the method comprises the steps of enhancing mobile broadband eMBB, ultra-high reliability ultra-low time delay communication uRLLC and large-scale Internet of things mMTC;
and the network equipment determines whether to trigger a PDU session establishment process with the user terminal according to the application scene.
2. The PDU session setup method of claim 1, wherein when the application scenario is enhanced mobile broadband eMBB or ultra-high reliability ultra-low latency communication urrllc, the network device determines whether to trigger a PDU session setup procedure with the ue according to the application scenario, and the method comprises:
and the network equipment determines to trigger a PDU session establishment process with the user terminal.
3. The PDU session establishment method of claim 1, wherein when the application scenario is a large-scale internet of things mtc, the network device determines whether to trigger a PDU session establishment procedure with the user equipment according to the application scenario, including:
and the network equipment determines not to trigger a PDU session establishment process with the user terminal.
4. The PDU session setup method of claim 2, further comprising:
and the network equipment sends a session establishment request to the user terminal, wherein the session establishment request is used for indicating the user terminal to initiate a PDU session establishment process to the network equipment.
5. The PDU session setup method of claim 2, further comprising:
the network equipment initiates a PDU session establishment flow;
and after the network equipment completes the PDU session establishment process, transmitting the related information of the PDU session to the user terminal.
6. A Protocol Data Unit (PDU) session establishment method, comprising:
the method comprises the steps that a user terminal determines indication information, wherein the indication information is used for indicating an application scene of the user terminal;
the application scene comprises the following steps: the method comprises the steps of enhancing mobile broadband eMBB, ultra-high reliability ultra-low time delay communication uRLLC and large-scale Internet of things mMTC;
and the user terminal sends a registration request message to network equipment, wherein the registration request message comprises the indication information.
7. The method for PDU session setup according to claim 6, wherein when the application scenario is enhanced mobile broadband eMBB or ultra-high reliable ultra-low latency communication urrllc, the method for PDU session setup further comprises:
the user terminal receives a session establishment request from the network equipment, wherein the session establishment request is used for indicating the user terminal to initiate a PDU session establishment process to the network equipment;
and the user terminal initiates a PDU session establishment flow to the network equipment according to the session establishment request.
8. The method for PDU session setup according to claim 6, wherein when the application scenario is enhanced mobile broadband eMBB or ultra-high reliable ultra-low latency communication urrllc, the method for PDU session setup further comprises:
and the user terminal receives the related information of the PDU session from the network equipment.
9. A network device configured to perform the protocol data unit, PDU, session establishment method according to any one of claims 1-5, comprising:
a transceiver module, configured to receive a registration request message from a user side, where the registration request message includes indication information, and the indication information is used to indicate an application scenario of the user terminal;
and the processing module is used for determining whether to trigger a PDU session establishment process with the user terminal according to the application scene.
10. A user terminal for performing the protocol data unit, PDU, session establishment method according to any one of claims 6-8, comprising:
the processing module is used for determining indication information, wherein the indication information is used for indicating an application scene of the user terminal;
a transceiver module, configured to send a registration request message to a network device, where the registration request message includes the indication information determined by the processing module.
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