CN117136627A - User plane connection establishment method and device - Google Patents

Abstract

The disclosure provides a method and a device for establishing user plane connection, wherein the method comprises the following steps: a first network element receives a session establishment request sent by a terminal, wherein the session establishment request is used for requesting to establish a protocol data unit PDU session of a first service; the first network element determines that the terminal needs to establish user plane connection with a second network element; the second network element is configured to provide the first service; the first network element selects a target second network element, wherein the target second network element is: a second network element for providing the first service for the terminal; and the first network element sends a first message to the terminal, wherein the first message is used for indicating the target second network element. The present disclosure provides a method for implementing a first service (e.g., a perceived service) between a 5GCN and a terminal through a user plane connection, thereby improving service efficiency.

Description

User plane connection establishment method and device

Technical field

The present disclosure relates to the field of communication technologies, and in particular to methods and devices for establishing user plane connections.

Background technique

In the communication system, 5G wireless sensing technology is introduced to use the 5G Core Network (5G Core Network, 5GCN) to provide sensing services to terminals. For example, in 5G wireless sensing technology, the 5GS function provides “the use of new wireless technology (New Radio, NR) radio frequency (RF) signals to obtain characteristic information (such as shape, shape, etc.) of the environment and/or objects in the environment. size, direction, speed, position, distance or relative motion between objects, etc.)" ability. In some cases, predefined information in the Evolved Packet Core (EPC) and/or the Evolved Universal Terrestrial Radio Access (E-UTRA) may also be used. Obtain characteristic information about the environment and/or objects in the environment.

Contents of the invention

The present disclosure proposes a user plane connection establishment method and device.

According to the first aspect of the embodiment of the present disclosure, a user plane connection establishment method is proposed, including:

The first network element receives a session establishment request sent by the terminal, where the session establishment request is used to request the establishment of a protocol data unit PDU session of the first service;

The first network element determines that the terminal needs to establish a user plane connection with the second network element; the second network element is used to provide the first service;

The first network element selects a target second network element, and the target second network element is: a second network element that provides the first service for the terminal;

The first network element sends a first message to the terminal, where the first message is used to indicate the target second network element.

According to the second aspect of the embodiment of the present disclosure, a user plane connection establishment method is proposed, including:

The terminal sends a session establishment request to the first network element, where the session establishment request is used to request the establishment of a PDU session of the first service;

The terminal receives a first message sent by a first network element, where the first message is used to indicate a target second network element, where the target second network element is: a second network element that provides a first service for the terminal;

The terminal implements the first service by interacting with the target second network element.

According to a third aspect of the embodiments of the present disclosure, a user plane connection establishment method is proposed. The communication system includes a terminal and a first network element. The method includes at least one of the following:

The terminal sends a session establishment request to the first network element, where the session establishment request is used to request the establishment of a PDU session of the first service;

The first network element receives the session establishment request sent by the terminal;

The first network element determines that the terminal needs to establish a user plane connection with the second network element; the second network element is used to provide the first service;

The first network element selects a target second network element, and the target second network element is: a second network element that provides the first service for the terminal;

The first network element sends a first message to the terminal, where the first message is used to indicate the target second network element;

The terminal receives the first message sent by the first network element;

The terminal implements the first service by interacting with the target second network element.

According to the fourth aspect of the embodiment of the present disclosure, a network device is proposed, used as a first network element, including:

A receiving module configured to receive a session establishment request sent by the terminal, where the session establishment request is used to request the establishment of a protocol data unit PDU session of the first service;

A processing module, used to determine that the terminal needs to establish a user plane connection with a second network element; the second network element is used to provide the first service;

The processing module is also used for the first network element to select a target second network element, where the target second network element is: a second network element that provides the first service for the terminal;

A sending module, configured for the first network element to send a first message to the terminal, where the first message is used to indicate the target second network element.

According to a fifth aspect of the embodiment of the present disclosure, a terminal is proposed, including:

A sending module, configured to send a session establishment request to the first network element, where the session establishment request is used to request the establishment of a PDU session of the first service;

A receiving module configured to receive a first message sent by a first network element. The first message is used to indicate a target second network element. The target second network element is: a second network element that provides a first service for the terminal. network element;

A processing module configured to implement the first service by interacting with the target second network element.

According to a sixth aspect of the embodiment of the present disclosure, a communication device is provided, including:

one or more processors;

Wherein, the processor is configured to call instructions to cause the communication device to execute the user plane connection establishment method described in the first aspect or the second aspect.

According to the seventh aspect of the embodiment of the present disclosure, a communication system is proposed, which is characterized by including a terminal and a network device, wherein the terminal is configured to implement the user plane connection establishment method described in the first aspect, and the The network device is configured to implement the user plane connection establishment method described in the first aspect or the second aspect.

According to an eighth aspect of the embodiments of the present disclosure, a storage medium is proposed, the storage medium stores instructions, and the characteristic is that when the instructions are run on a communication device, the communication device is caused to perform the first aspect as described in the first aspect. Or the user plane connection establishment method described in the second aspect.

Description of the drawings

The above and/or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

Figure 1A is a schematic architectural diagram of some communication systems provided by embodiments of the present disclosure;

Figure 1B is a flow chart of a method of "positioning through user plane connection between 5GCN and terminal" provided by an embodiment of the present disclosure;

Figure 2A is an interactive schematic diagram of a user plane connection establishment method provided by an embodiment of the present disclosure;

3A-3B is a schematic flowchart of a user plane connection establishment method provided by yet another embodiment of the present disclosure;

Figure 4A is a schematic flowchart of a user plane connection establishment method provided by yet another embodiment of the present disclosure;

5A-5B is a schematic flowchart of a user plane connection establishment method provided by yet another embodiment of the present disclosure;

Figure 6A is a schematic structural diagram of a network device provided by an embodiment of the present disclosure;

Figure 6B is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

Figure 7A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

FIG. 7B is a schematic structural diagram of a chip provided by an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure provide user plane connection establishment methods and devices, equipment, systems and computer storage media

In a first aspect, embodiments of the present disclosure provide a method for establishing a user plane connection. The method includes:

The first network element receives a session establishment request sent by the terminal, where the session establishment request is used to request the establishment of a protocol data unit PDU session of the first service;

The first network element determines that the terminal needs to establish a user plane connection with the second network element; the second network element is used to provide the first service;

The first network element selects a target second network element, and the target second network element is: a second network element that provides the first service for the terminal;

The first network element sends a first message to the terminal, where the first message is used to indicate the target second network element.

In the above embodiment, the first network element can select the target second network element that "provides the first service for the terminal" based on the session establishment request, and indicates the target second network element to the terminal, so that the terminal can communicate with the terminal. The target second network element establishes a user plane connection and implements the first service by interacting with the target second network element. Among them, the first network element and the target second network element are both core network elements. From this, it can be seen that the present disclosure provides a method for realizing the first service through user plane connection between 5GCN and the terminal, which improves the service Efficiency, the first service may be a sensing service, for example. Moreover, in the above embodiment, after the first network element selects the target second network element, it will indicate the target second network element to the terminal, so that the terminal can clearly know which network element it wants to establish a user plane connection with. , thus ensuring that the target second network element selected by the first network element to provide the first service to the terminal and the target second network element known by the terminal to establish a user plane connection are the same network element, thus avoiding " The target second network element selected by the first network element to provide the first service to the terminal is inconsistent with the target second network element known by the terminal to establish a user plane connection, thereby ensuring the accurate execution of the first service .

With reference to some embodiments of the first aspect, in some embodiments, the session establishment request includes at least one of the following:

The data network name DNN corresponding to the first business;

Single network slice selection auxiliary information S-NSSAI corresponding to the first service;

The terminal identifier of the terminal.

In the above embodiment, the session establishment request includes the terminal identification of the terminal that initiates the PDU session, so that the first network element knows which terminal initiated the PDU session, thereby facilitating the subsequent establishment of a user connection with the 5GCN for the terminal. plane connection, and provide the first service to the terminal through the user plane to improve business efficiency. And, optionally, the DNN corresponding to the first service is used to indicate a data network dedicated to the first service, and the S-NSSAI corresponding to the first service is used to indicate a single network slice dedicated to the first service, then by The session establishment request includes the DNN corresponding to the first service and/or the S-NSSAI corresponding to the first service, so that the subsequent DNN corresponding to the first service and/or the S-NSSAI corresponding to the first service can be used in the first service exclusive A PDU session connected through the user plane is established in the data network and/or a single network slice dedicated to the first service to successfully provide the first service to the terminal. Optionally, the first service can be deployed on the same data network and/or a single network slice as other services. In this case, the DNN/S-NSSAI in the session establishment request corresponds to the data network where the first service pair is deployed. .

With reference to some embodiments of the first aspect, in some embodiments, after the first network element receives the session establishment request sent by the terminal, the method further includes:

Query the subscription data of the terminal based on the terminal identification; wherein the subscription data includes at least one of a first indication and a network element identification of the target second network element, and the first indication is used to indicate: The terminal needs to establish a user plane connection with the second network element.

With reference to some embodiments of the first aspect, in some embodiments, querying the subscription data of the terminal based on the terminal identifier includes:

Query the subscription data of the terminal from a third network element based on the terminal identifier; wherein the third network element is used to provide a unified data management function.

In the above embodiment, the first network element can look up the subscription data of the terminal, and can determine the network element identifier of the second network element that is the target of "providing the first service for the terminal" from the subscription data of the terminal, so that the first network element can The network element can select which second network element to use to provide the first service to the terminal based on the network element identifier, and indicate the selected target second network element to the terminal, and then the terminal can establish a connection with the target second network element. Connect to successfully implement first business and improve business efficiency. Alternatively, the first network element may determine from the terminal's subscription data whether the terminal requires the second network element to provide the first service, and when it is determined that the terminal requires the second network element to provide the first service, the first network element may select out the target second network element, and indicates the target second network element to the terminal, so that the terminal can establish a connection with the target second network element, thereby successfully realizing the first service and improving service efficiency.

With reference to some embodiments of the first aspect, in some embodiments, the first network element determines that the terminal needs to establish a user plane connection with the second network element, including at least one of the following:

Determine that the terminal needs to establish a connection with the second network element based on the preset policy;

Determine that the terminal needs to establish a connection with the second network element based on the contract data;

It is determined that the terminal needs to establish a connection with the second network element according to the received dynamic policy information sent by the seventh network element, where the seventh network element is used to provide a policy control function.

In the above embodiment, a method is provided for how the first network element determines whether the terminal needs to establish a user plane connection with the second network element, so that when the first network element determines that the terminal needs the second network element to establish a user plane connection, The selected target second network element can be instructed to the terminal, and the terminal can establish a connection with the target second network element, thereby successfully realizing the first service and improving service efficiency.

With reference to some embodiments of the first aspect, in some embodiments, the first network element selects a target second network element, including at least one of the following:

Select the target second network element from at least one second network element registered on a fourth network element, where the fourth network element is used to provide a network storage function;

Select the target second network element based on the network element identifier and/or the first indication of the target second network element in the subscription data.

With reference to some embodiments of the first aspect, in some embodiments, selecting the target second network element from at least one second network element registered on the fourth network element includes:

Send a second message to the fourth network element, where the second message is used to request at least one second network element registered on the fourth network element;

Receive a third message sent by the fourth network element, the third message indicating at least one second network element registered on the fourth network element;

Select the target second network element from at least one second network element registered on the fourth network element.

With reference to some embodiments of the first aspect, in some embodiments, the first network element selects a target second network element, including:

If the second network element stored by the first network element is unavailable, the first network element performs second network element reselection to select the target second network element.

In the above embodiment, a method for how a first network element selects a target second network element is provided, so that the first network element can successfully select the target second network element and then indicate it to the terminal, and then the terminal can communicate with the target second network element. The second network element establishes a connection, thereby successfully realizing the first service and improving service efficiency.

Combined with some embodiments of the first aspect, in some embodiments, the method further includes:

The first network element establishes an N4 session with a fifth network element, and the fifth network element is used to provide user plane functions.

In the above embodiment, the first network element also establishes an N4 session with the fifth network element, and the fifth network element is used to provide user plane functions. Optionally, the fifth network element is also used to implement user plane connection between the terminal and the target second network element. Optionally, in the embodiment of the present disclosure, an N4 session is established between the first network element and the fifth network element, so that the first network element can control and/or manage the fifth network element to establish a terminal through the N4 session. User plane connection with the target second network element.

With reference to some embodiments of the first aspect, in some embodiments, the first message is a PDU session establishment accept message.

With reference to some embodiments of the first aspect, in some embodiments, the first service is a sensing service.

In the second aspect, embodiments of the present disclosure provide a method for establishing a user plane connection. The method includes:

The terminal sends a session establishment request to the first network element, where the session establishment request is used to request the establishment of a PDU session of the first service;

The terminal receives a first message sent by a first network element, where the first message is used to indicate a target second network element, where the target second network element is: a second network element that provides a first service for the terminal;

The terminal implements the first service by interacting with the target second network element.

In the above embodiment, the first network element selects the target second network element that "provides the first service to the terminal" and indicates the target second network element to the terminal so that the terminal can communicate with the target second network element. Establish a user plane connection, and implement the first service through user plane interaction with the target second network element. Among them, the first network element and the target second network element are both core network elements. From this, it can be seen that the present disclosure provides a method for realizing the first service through user plane connection between 5GCN and the terminal, which improves the service Efficiency, the first service may be a sensing service, for example. Moreover, in the above embodiment, after the first network element selects the target second network element, it will indicate the target second network element to the terminal, so that the terminal can clearly know which network element it wants to establish a user plane connection with. , thus ensuring that the target second network element selected by the first network element to provide the first service to the terminal and the target second network element known by the terminal to establish a user plane connection are the same network element, thus avoiding " The target second network element selected by the first network element to provide the first service to the terminal is inconsistent with the target second network element known by the terminal to establish a user plane connection, thereby ensuring the accurate execution of the first service .

Combined with some embodiments of the second aspect, in some embodiments, the method further includes:

Establish a user plane connection with the target second network element.

Combined with some embodiments of the second aspect, in some embodiments, the session establishment request includes at least one of the following:

DNN corresponding to the first business;

S-NSSAI corresponding to the first service;

The terminal identifier of the terminal.

With reference to some embodiments of the second aspect, in some embodiments, the relevant parameters of the session establishment request for accessing the PDU session of the first service are configured by the terminal based on local data, or are configured by the terminal based on User equipment routing policy URSP rule configuration. The relevant parameters may be, for example, DNN/S-NSSAI and other parameters.

With reference to some embodiments of the second aspect, in some embodiments, implementing the first service by interacting with the target second network element includes at least one of the following:

Receive the service result corresponding to the first service sent by the target second network element;

Send the obtained service data corresponding to the first service to the target second network element, and receive the service result corresponding to the first service sent by the target second network element;

Receive the service data corresponding to the first service sent by the target second network element, and determine the service result corresponding to the first service based on the service data corresponding to the first service;

Wherein, the service result corresponding to the first service sent by the target second network element is determined by the target second network element based on the service data corresponding to the first service obtained from the terminal and/or the radio access network RAN.

With reference to some embodiments of the second aspect, in some embodiments, the first service is a sensing service;

The business data corresponding to the first business is sensing data;

The business result corresponding to the first business is the perception result.

In a third aspect, embodiments of the present disclosure provide a user plane connection establishment method for use in a communication system. The communication system includes a terminal and a first network element. The method includes at least one of the following:

The terminal sends a session establishment request to the first network element, where the session establishment request is used to request the establishment of a PDU session of the first service;

The first network element receives the session establishment request sent by the terminal;

The first network element determines that the terminal needs to establish a user plane connection with the second network element; the second network element is used to provide the first service;

The first network element selects a target second network element, and the target second network element is: a second network element that provides the first service for the terminal;

The first network element sends a first message to the terminal, where the first message is used to indicate the target second network element;

The terminal receives the first message sent by the first network element;

The terminal implements the first service by interacting with the target second network element.

In the fourth aspect, an embodiment of the present disclosure provides a network device used as a first network element, including:

A receiving module configured to receive a session establishment request sent by the terminal, where the session establishment request is used to request the establishment of a protocol data unit PDU session of the first service;

A processing module, used to determine that the terminal needs to establish a user plane connection with a second network element; the second network element is used to provide the first service;

The processing module is also used for the first network element to select a target second network element, where the target second network element is: a second network element that provides the first service for the terminal;

A sending module, configured for the first network element to send a first message to the terminal, where the first message is used to indicate the target second network element.

Combined with some embodiments of the fourth aspect, in some embodiments, the session establishment request includes at least one of the following:

The data network name DNN corresponding to the first business;

Single network slice selection auxiliary information S-NSSAI corresponding to the first service;

The terminal identifier of the terminal.

With reference to some embodiments of the fourth aspect, in some embodiments, after the first network element receives the session establishment request sent by the terminal, the device is further configured to:

Query the subscription data of the terminal based on the terminal identification; wherein the subscription data includes at least one of a first indication and a network element identification of the target second network element, and the first indication is used to indicate: The terminal needs to establish a user plane connection with the second network element.

Combined with some embodiments of the fourth aspect, in some embodiments, the device is also used for:

Query the subscription data of the terminal from a third network element based on the terminal identifier; wherein the third network element is used to provide a unified data management function.

Combined with some embodiments of the fourth aspect, in some embodiments, the processing module is also used for at least one of the following:

Determine that the terminal needs to establish a connection with the second network element based on the preset policy;

Determine that the terminal needs to establish a connection with the second network element based on the contract data;

It is determined that the terminal needs to establish a connection with the second network element according to the received dynamic policy information sent by the seventh network element, where the seventh network element is used to provide a policy control function.

Combined with some embodiments of the fourth aspect, in some embodiments, the processing module is also used for at least one of the following:

Select the target second network element from at least one second network element registered on a fourth network element, where the fourth network element is used to provide a network storage function;

Select the target second network element based on the network element identifier and/or the first indication of the target second network element in the subscription data.

Combined with some embodiments of the fourth aspect, in some embodiments, the processing module is also used to:

Send a second message to the fourth network element, where the second message is used to request at least one second network element registered on the fourth network element;

Receive a third message sent by the fourth network element, the third message indicating at least one second network element registered on the fourth network element;

Select the target second network element from at least one second network element registered on the fourth network element.

Combined with some embodiments of the fourth aspect, in some embodiments, the processing module is also used to:

If the second network element stored by the first network element is unavailable, the first network element performs second network element reselection to select the target second network element.

Combined with some embodiments of the fourth aspect, in some embodiments, the device is also used for:

The first network element establishes an N4 session with a fifth network element, and the fifth network element is used to provide user plane functions.

With reference to some embodiments of the fourth aspect, in some embodiments, the first message is a PDU session establishment accept message.

With reference to some embodiments of the fourth aspect, in some embodiments, the first service is a sensing service.

In a fifth aspect, embodiments of the present disclosure provide a terminal, including:

A sending module, configured to send a session establishment request to the first network element, where the session establishment request is used to request the establishment of a PDU session of the first service;

A receiving module configured to receive a first message sent by a first network element. The first message is used to indicate a target second network element. The target second network element is: a second network element that provides a first service for the terminal. network element;

A processing module configured to implement the first service by interacting with the target second network element.

Combined with some embodiments of the fifth aspect, in some embodiments, the device is also used for:

Establish a user plane connection with the target second network element.

Combined with some embodiments of the fifth aspect, in some embodiments, the session establishment request includes at least one of the following:

DNN corresponding to the first business;

S-NSSAI corresponding to the first service;

The terminal identifier of the terminal.

With reference to some embodiments of the fifth aspect, in some embodiments, the relevant parameters in the session establishment request for accessing the PDU session of the first service are configured by the terminal based on local data, or by the terminal URSP rule configuration based on user equipment routing policy.

Combined with some embodiments of the fifth aspect, in some embodiments, the processing module is also used for at least one of the following:

Receive the service result corresponding to the first service sent by the target second network element;

Send the obtained service data corresponding to the first service to the target second network element, and receive the service result corresponding to the first service sent by the target second network element;

Receive the service data corresponding to the first service sent by the target second network element, and determine the service result corresponding to the first service based on the service data corresponding to the first service;

Wherein, the service result corresponding to the first service sent by the target second network element is determined by the target second network element based on the service data corresponding to the first service obtained from the terminal and/or the radio access network RAN.

With reference to some embodiments of the fifth aspect, in some embodiments, the first service is a sensing service;

The business data corresponding to the first business is sensing data;

The business result corresponding to the first business is the perception result.

In a sixth aspect, embodiments of the present disclosure provide a communication device. The communication device includes: one or more processors; one or more memories used to store instructions; wherein the above-mentioned processor is used to call the above-mentioned instructions so that the above-mentioned communication device The user plane connection establishment method described in the first aspect, the optional implementation manner of the first aspect, the second aspect, and the optional implementation manner of the second aspect is executed.

In a seventh aspect, embodiments of the present disclosure provide a communication system. The communication system includes: a terminal and a network device; wherein the terminal is configured to perform the method described in the first aspect and the optional implementation of the first aspect. The above-mentioned The network device is configured to perform the method as described in the second aspect and optional implementations of the second aspect.

In an eighth aspect, embodiments of the present disclosure provide a storage medium. The storage medium stores instructions. When the instructions are run on a communication device, the communication device causes the communication device to perform the following tasks: the first aspect, the optional implementation of the first aspect, and the third aspect. Second aspect, the method described in the optional implementation of the second aspect.

In a ninth aspect, embodiments of the present disclosure provide a program product. When the program product is executed by a communication device, the communication device causes the communication device to execute the first aspect, the optional implementation of the first aspect, the second aspect, and the possible implementation of the second aspect. Choose the method described in the implementation.

In a tenth aspect, embodiments of the present disclosure provide a computer program that, when run on a computer, causes the computer to execute the first aspect, optional implementations of the first aspect, the second aspect, and optional implementations of the second aspect. method described.

It can be understood that the above-mentioned terminals, network devices, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects it can achieve can be referred to the beneficial effects in the corresponding methods, and will not be described again here.

The embodiments of this disclosure propose an inventive title. In some embodiments, terms such as sending method and receiving method, information sending method, and information receiving method may be replaced with each other, terms such as communication device and information processing device, information sending device, and information receiving device may be replaced with each other. Information processing system, The terms communication system, information sending system, and information receiving system are interchangeable.

The embodiments of this disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to specifically limit the scope of protection of this disclosure. If there is no contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution in which some steps are removed from a certain embodiment can also be used. It is implemented as an independent embodiment, and the order of each step in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, various embodiments can be arbitrarily combined, for example , some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with optional implementations of other embodiments.

In each embodiment of the present disclosure, if there is no special explanation or logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be used according to their inherent logical relationships. Combined to form new embodiments.

The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure.

In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforesaid", "this" etc., can mean "one and only one", "one or more", "at least one", etc. For example, when articles (articles) such as "a", "an", and "the" in English are used in translation, the noun after the article can be understood as a singular expression or a plural expression. .

In the embodiment of the present disclosure, "plurality" refers to two or more.

In some embodiments, "at least one of", "at least one of", "at least one of", "one or more" ”, “a plurality of”, “multiple” and other terms may be interchanged.

In the embodiments of the present disclosure, descriptions such as "at least one of A, B, C...", "A and/or B and/or C..." include any of A, B, C... A situation that exists alone also includes any combination of any multiple of A, B, C..., and each situation can exist alone; for example, "at least one of A, B, C" includes A, B, C... alone. B alone, C alone, combination of A and B, combination of A and C, combination of B and C, combination of A and B and C; for example, A and/or B includes A alone, B alone, combination of A and B Condition.

In some embodiments, "in one situation A, in another situation B", "in response to one situation A, in response to another situation B" and other description methods, according to the situation, the following technical solutions may be included: irrelevant to B A is performed independently, that is, in some embodiments, A; B is performed independently of A, that is, in some embodiments, B; A and B are selectively performed, that is, in some embodiments, selected from A and B. Execution; both A and B are executed, i.e., A and B in some embodiments. It is similar to the above when there are more branches such as A, B, C, etc.

The prefixes such as "first" and "second" in the embodiments of this disclosure are only used to distinguish different description objects and do not limit the position, order, priority, quantity or content of the description objects. See the description of the context in the claims or embodiments, and the use of prefixes should not constitute unnecessary limitations. For example, if the description object is "field", then the ordinal word before "field" in "first field" and "second field" does not limit the position or order between "fields". "First" and "Second field" " does not limit whether the "fields" it modifies are in the same message, nor does it limit the order of the "first field" and "second field". For another example, if the description object is "level", then the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the number of description objects is not limited by ordinal numbers, and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. ; For another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

In some embodiments, "includes A", "includes A", "is used to indicate A", and "carries A" can be interpreted as directly carrying A, or as indirectly indicating A.

In some embodiments, "in response to...", "in response to determining...", "in the case of...", "when...", "when...", "if...", Terms such as "if..." are interchangeable.

In some embodiments, "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to" , "not less than", "above" and other terms can be interchanged, "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", " Terms such as "less than", "less than or equal to", "no higher than" and "below" may be used interchangeably.

In some embodiments, devices can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments, such as "device", "equipment", "device" ”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity” , "subject" and other terms can be interchanged.

In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

In some embodiments, "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "wireless "radio base station", "fixed station", "node", "access point", "transmission point (TP)", "reception point" point, RP)", "transmission/reception point (TRP)", "panel", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell (cell)" ”, “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group” Terms such as "(cell group)", "carrier", "component carrier" and "bandwidth part (BWP)" can be interchanged.

In some embodiments, "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)" )", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device ( mobiledevice, wireless device, wirelesscommunication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal Terms such as wireless terminal, remote terminal, handset, user agent, mobile client and client can be interchanged.

In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may be configured to have all or part of the functions of the terminal.

In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the location is located.

In some embodiments, data, information, etc. may be obtained with user consent.

In addition, each element, each row, or each column in the table in the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any element, any row, and any column can also be implemented as an independent embodiment.

The corresponding relationships shown in each table in this disclosure can be configured or predefined. The values of the information in each table are only examples and can be configured as other values, which is not limited by this disclosure. When configuring the correspondence between information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, in the table in this disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.

Predefinition in this disclosure may be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

FIG. 1A is an architectural schematic diagram of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1A , the communication system 100 may include a terminal 101 and a core network device 102 . It should be noted that FIG. 1A is only an example, and the communication system 100 may also include more devices than the terminal 101 and the core network device 102, such as the access network device 103 and so on. In some examples, access network equipment and core network equipment 102 may be collectively referred to as network equipment.

In some embodiments, the terminal 101 may include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication functions, a smart car, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality ( virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control (industrial control), wireless terminal equipment in self-driving (self-driving), remote surgery (remote medical) Wireless terminal equipment in surgery, wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, and smart home At least one of the wireless terminal devices, but is not limited to this.

In some embodiments, the core network device 102 includes a first network element 1021, a second network element 1022, a third network element 1023, a fourth network element 1024, a fifth network element 1025, and so on. Network elements can be virtual or physical. The core network includes, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC). It should be noted that the number of core network devices 102 may be one or more.

In some embodiments, the first network element 1021 is used to provide a session management function, such as a session management function (Session Management Function, SMF).

In some embodiments, the second network element 1022 is used to provide sensing services, such as a sensing network element (Sensing Function, SF). The name is not limited to this. The second network element may also be a network element within the core network that provides other services, such as a location management function (LMF) for positioning services, other network elements that provide new services in the core network, etc.

In some embodiments, the third network element 1023 is used to provide a unified data management function, such as a unified data management function (Unified Data Management, UDM) network element.

In some embodiments, the fourth network element 1024 is used to provide a network storage function, such as a network storage function (Network Repository Function, NRF).

In some embodiments, the fifth network element 1025 is used to provide user plane functions, such as user plane functions (UserPlane Function, UPF).

In some embodiments, the terminal 101 and the core network device 102 may be connected through an access network device. Optionally, the access network device is, for example, a node or device that connects the terminal to a wireless network. The access network device It may include evolved NodeB (eNB), next generation eNB (ng-eNB), next generation NodeB (gNB), node B (node B, NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul equipment, radio network controller (RNC), base station controller , BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in 6G communication system, open base station (Open RAN), cloud base station (Cloud RAN) , at least one of a base station in other communication systems and an access node in a wireless fidelity (WiFi) system, but is not limited to this.

It can be understood that the communication system described in the embodiments of the present disclosure is to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. Those of ordinary skill in the art will know that, With the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG. 1A or part of the main body, but are not limited thereto. The subjects shown in Figure 1A are examples. The communication system may include all or part of the subjects in Figure 1A , or other subjects other than Figure 1A . The number and form of each subject is arbitrary, and the connection relationship between the subjects is an example. , each subject may not be connected or connected, and the connection may be in any way, it may be a direct connection or an indirect connection, it may be a wired connection or a wireless connection.

Each embodiment of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, and fourth-generation mobile communication systems ( 4th generation mobile communication system (4G),), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), new wireless Access technology (New-Radio Access Technology, RAT), New Radio (NR), New radio access (NX), Futuregeneration radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra-wideband (Ultra-WideBand, UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, machine-to-machine (Machine to Machine, M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), systems utilizing other user plane connection establishment methods, and next-generation systems expanded based on them wait. In addition, a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G, etc.) can also be applied.

In some technical solutions, as shown in Figure 1B, Figure 1B is a flow chart of a method of "implementing positioning through user plane connection between 5GCN and the terminal" provided by an embodiment of the present disclosure. As shown in Figure 1B, the Methods can include the following steps:

1. The terminal sends an uplink non-access stratum (UL NAS TRANSPORT) message to the Access and Mobility Management Function (AMF). The UL NAS TRANSPORT message is used to request Start user plane (UP) positioning (Positioning). The above terminal may also be called user equipment (User Equipment, UE).

2.AMF selects the LMF used for positioning.

3.AMF sends Nlmf_Location_UPConfig request to the selected LMF.

4. LMF sends the Namf_Communication_N1N2MessageTransfer message to AMF, which may include user plane information (User Plane Information).

5. The AMF sends a downlink non-access stratum (DLNAS TRANSPORT) message to the terminal. The DL NAS TRANSPORT message includes the user plane information of the LMF that provides the positioning service.

6. The terminal discovers the LMF through domain name server (DNS) analysis based on the user plane information of the LMF, and establishes a secure UP connection with the discovered LMF.

7. LMF sends Nlmf_Location_UPConfig response to AMF.

8. LMF stores the Location Service (LCS) UP connection context.

9. Implement positioning services via user plane connections.

It can be seen from the above method that the LMF will act as an application server in the user plane positioning process to achieve positioning. Optionally, the LMF will perform the above step 2 to select the AMF, and the AMF will send the user related to the selected LMF to the terminal. face information. Optionally, the terminal will perform the above step 6 to discover the LMF through DNS resolution based on the user plane information, and establish a user plane connection with the discovered LMF. It can be seen from this that in the above-mentioned method of "positioning through user plane connection between 5GCN and terminals", the AMF and the terminal will use two different logics to determine the LMF, which may lead to misalignment. For example, the LMF selected by the AMF may be different from the LMF resolved by the terminal through DNS, which may lead to errors in positioning. Therefore, the method of "locating through the user plane connection between 5GCN and the terminal" does not transmit data through the user plane. There will be the above-mentioned defects. In addition, because LMF does not support perception processing, this method cannot be used to provide perception services.

Therefore, a method for providing sensing services through user plane connections is urgently needed.

FIG. 2A is an interactive schematic diagram of a user plane connection establishment method according to an embodiment of the present disclosure. As shown in Figure 2A, the embodiment of the present disclosure relates to a user plane connection establishment method, which is used in the communication system 100. The above method includes:

Step 2101: The terminal sends a session establishment request to the first network element.

In some embodiments, the session establishment request may be used to request the establishment of a Protocol Data Unit (PDU) session of the first service. For example, the session establishment request may be, for example, a PDU Session Establishment request (PDU Session Establishment Request), optionally, this PDU session can be used for the first service. Optionally, the first service may be any service. For example, the first service may be a sensing service, or other services other than the sensing service, which is not limited in this disclosure.

In some embodiments, the terminal may send the session establishment request to the first network element, and the first network element may receive the session establishment request. The first network element is used to provide session management functions. For example, the first network element can be an SMF. In some embodiments, the terminal may send a session establishment request to the first network element through the sixth network element. The sixth network element may be an AMF, for example. When the terminal sends the session establishment request through the sixth network element, the terminal may first send the session establishment request to the sixth network element, and then the sixth network element may call the Nsmf_PDUSession_CreateSMContext Request service (Nsmf_PDU session establishment context request service) to the first The network element sends the session establishment request. It should be noted that when the sixth network element calls the Nsmf_PDUSession_CreateSMContext Request service to send the session establishment request to the first network element, the first network element can call the Nsmf_PDUSession_CreateSMContext Response service (Nsmf_PDU session establishment context response service) to send the session establishment request to the sixth network element. In response to the above Nsmf_PDUSession_CreateSMContext Request service, for example, when the first network element decides to perform subsequent processing based on the session establishment request, it calls the Nsmf_PDUSession_CreateSMContext Response service to the sixth network element.

In some embodiments, the session establishment request may include at least one of the following:

Data Network Name (DNN) corresponding to the first service;

Single Network Slice Selection Assistance Information (S-NSSAI) corresponding to the first service;

The terminal identifier of the terminal.

In some embodiments, the above-mentioned "DNN corresponding to the first service" may be: a DNN dedicated to the first service.

In some embodiments, the above-mentioned "S-NSSAI corresponding to the first service" may be: S-NSSAI dedicated to the first service.

In some embodiments, the above-mentioned terminal identifier may be, for example: User Permanent Identifier (SUbscriptionPermanent Identifier, SUPI).

Optionally, the first service can be deployed on the same data network and/or a single network slice as other services. In this case, the DNN/S-NSSAI in the session establishment request is the corresponding data of the first service pair deployed. network.

In some embodiments, the session establishment request may be sent by the terminal when the terminal needs to establish a user plane connection with the second network element to implement the first service. Optionally, the second network element may be used to provide the above-mentioned first service. For example, when the above-mentioned first service is a sensing service, the second network element may be an SF network element. The second network element may also be a network element within the core network that provides other services, such as a location management function (LMF) for positioning services, other network elements that provide new services in the core network, etc.

In some embodiments, the method for a terminal to send a session establishment request may include at least one of the following:

The terminal independently determines that the terminal needs to establish a connection with the second network element. For example, when the terminal independently determines that the terminal needs to establish a user plane connection or a control plane connection with the second network element, it sends the session establishment request;

When the terminal receives the second instruction sent by the core network (Core Network, CN), it sends the session establishment request; optionally, the second instruction can be used to indicate that the terminal needs to establish a connection with the second network element, for example, the second The indication may be used to instruct the terminal to establish a user plane connection or a control plane connection with the second network element;

The terminal receives the second instruction sent by the application function (AF) triggering the core network and sends the session establishment request;

The terminal receives the second instruction sent by the sensing application (Application) and sends the session establishment request.

In some embodiments, the session can be used to provide services between the terminal and the second network element through the user plane or control plane.

In some embodiments, the relevant parameters in the session establishment request may be configured by the terminal based on local data. For example, the relevant parameters may be: DNN/S-NSSSAI and other parameters, or the session establishment request may be configured by the terminal. Configured based on User Equipment Routing Selection Policy (UE Routing Selection Policy, URSP) rules. Optionally, the URSP rules may be configured to the terminal by the core network and/or the radio access network (radio access network, RAN).

Step 2102: The first network element queries the third network element for the terminal's subscription data.

In some embodiments, the third network element may be used to provide a unified data management function. For example, the third network element may be a unified data management function (Unified Data Management, UDM) network element.

In some embodiments, the first network element may query the terminal's subscription data from the third network element based on the terminal identifier.

In some embodiments, the subscription data may include at least one of a first indication and a network element identifier of the target second network element. Optionally, the first indication may be used to indicate that the terminal requires the second network element to provide the first service. The target second network element may be: a network element that provides the first service for the terminal. The network element identifier may be, for example, a network element identifier (Identity, ID). For example, when the target second network element is an SF network element, the network element identifier may be an SF ID.

In some embodiments, the above step 2102 may be an optional step. In some embodiments, when the terminal's subscription data does not exist in the first network element, the first network element will query the third network element. When the subscription data of the terminal exists in the first network element, there is no need to perform step 2102 and step 2103 is performed directly.

Step 2103: The first network element determines that the terminal needs to establish a user plane connection with the second network element.

In some embodiments, the method for the first network element to determine that the terminal needs to establish a user plane connection with the second network element may include at least one of the following:

Method 1: Determine that the terminal needs to establish a user plane connection with the second network element based on a preset policy.

Optionally, the preset policy may be, for example: when the session establishment request requested by the first network element is for a specific service, directly determine that the terminal needs to establish a user plane connection with the second network element, Optionally, the specific service may be, for example, a perception service; or the specific service may be, for example, a perception service type specified in the perception service, and the perception service of the specified perception service type requires a large amount of data transmission; or the specific service may be It is a business other than sensing business; there is no limitation here. It should be understood that the above-mentioned preset strategies are only exemplary introductions, and other similar strategies are also within the protection scope of the present disclosure.

Method 2: Determine that the terminal needs to establish a user plane connection with the second network element based on the contract data.

Optionally, the subscription data may include: the specific service subscribed by the user requires a user plane connection for data transmission. Optionally, the specific service may be, for example, a perception service; or the specific service may be, for example, a specified service in the perception service. Sensing service type, the sensing service of the specified sensing service type requires a large amount of data transmission; or, the specific service can be other services besides the sensing service;

Method 3: Determine that the terminal needs to establish a user plane connection with the second network element based on the dynamic policy information.

Optionally, for example, the first network element can obtain dynamic policy information from a Policy Control Function (PCF). Optionally, the dynamic policy information can specify a specific service to select user plane interaction data or control plane interaction data. Judgment principle. Based on this judgment principle, it can be judged which services require user plane connection for data transmission and which services require control plane connection for data transmission, so that the first network element can determine whether the terminal is based on the service currently requested by the terminal and the judgment principle. A user plane connection needs to be established with the second network element.

Step 2104: The first network element selects the target second network element.

In some embodiments, the method for the first network element to select the target second network element may include at least one of the following:

The first method is to select the target second network element based on the network element identifier in the contract data.

Optionally, the network element indicated by the network element identifier in the subscription data may be selected as the target second network element.

Second, select the target second network element from at least one second network element registered on the fourth network element.

In some embodiments, the fourth network element may be used to provide a network storage function. For example, the fourth network element may be a Network Repository Function (NRF) network element.

Optionally, the above method of "selecting a target second network element from at least one second network element registered on the fourth network element" may include the following steps:

Step a. Send a second message to the fourth network element. The second message may be used to request at least one second network element registered on the fourth network element.

In some embodiments, the first network element may send the second message to the NRF by calling the network function discovery service (Nnrf_NFDiscovery service) of the NRF.

In some embodiments, the second message may carry information used to select the second network element, for example, it may carry: quality of service (QoS) requirements, service type, terminal location information, etc.

Step b: Receive a third message sent by the fourth network element. The third message may indicate at least one second network element registered on the fourth network element.

Optionally, the second network element indicated by the third message may be the second network element selected by the fourth network element based on the "information for selecting the second network element" carried in the above-mentioned second message.

Step c: Select the target second network element from at least one second network element registered on the fourth network element.

In some embodiments, the method for the first network element to select the target second network element from at least one second network element registered on the fourth network element may include at least one of the following:

Determine any one of the at least one second network element registered on the fourth network element as the target second network element;

Determine the second network element with the best performance among at least one second network element registered on the fourth network element as the target second network element;

The most recently used second network element among the at least one second network element registered on the fourth network element is determined as the target second network element.

It should be understood that the above method of selecting the target second network element is only an exemplary introduction, and other similar methods are also within the protection scope of the present disclosure.

Step 2105: The first network element establishes or modifies an N4 session with the fifth network element.

In some embodiments, the fifth network element may be used to provide user plane functions. For example, the fifth network element may be a UPF network element.

In some embodiments, the reason why the first network element establishes an N4 session with the fifth network element is introduced below:

Optionally, since the fifth network element is used to establish a user plane connection between the terminal and the second network element, an N4 session is established between the first network element and the fifth network element so that the The first network element can control and/or manage the fifth network element to establish a user plane connection between the terminal and the target second network element through the N4 session, thereby greatly improving the efficiency of the first service.

In some embodiments, when establishing or modifying the N4 session between the first network element and the fifth network element, the N4 session can be established or modified based on the relevant information of the target second network element, thereby realizing the connection between the terminal and the second network element. The user plane connection is realized through the fifth network element.

Step 2106: The first network element sends the first message to the terminal.

In some embodiments, the first message may be used to indicate the target second network element. In some embodiments, the first network element may send the first message to the terminal. For example, the first network element may send the first message to the terminal through the above-mentioned sixth network element. Optionally, the first message may be, for example, a PDU Session Establishment Accept message. Optionally, the terminal may receive the first message.

Step 2107: The terminal establishes a user plane connection with the target second network element.

Step 2108: The terminal implements the first service by interacting with the target second network element.

In some embodiments, the method for the terminal to implement the first service by interacting with the target second network element may include at least one of the following:

Receive the service result corresponding to the first service sent by the target second network element;

Send the obtained service data corresponding to the first service to the target second network element, and receive the service result corresponding to the first service sent by the target second network element;

Receive service data corresponding to the first service sent by the target second network element, and determine a service result corresponding to the first service based on the service data corresponding to the first service.

Optionally, the service result corresponding to the first service sent by the target second network element may be determined by the target second network element based on the service data corresponding to the first service obtained from the terminal and/or RAN.

Optionally, the service data corresponding to the first service obtained by the terminal may be obtained by the terminal from at least one of other terminals, the sensing target, the RAN, and the target second network element.

Optionally, when the first service is a sensing service, the service data corresponding to the first service may be sensing data, and the service result corresponding to the first service may be a sensing result. Among them, the sensing data can be used to calculate sensing results.

The user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2108. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, and step S2103 can be implemented as an independent embodiment, but is not limited thereto.

Optionally, the above-mentioned step 2102 is an optional step, which may be optionally executed or not executed.

In this implementation mode or example, if there is no contradiction, each step can be independent, combined or exchanged in any order. Optional methods or optional examples can be combined arbitrarily, and can be combined with any other implementation modes or other embodiments. Make any combination between steps.

In some embodiments, before executing the above steps 2103 and 2104, the first network element may have stored relevant information of the second network element, such as the second network element stored in the local configuration or previously selected and stored during related services. Optionally, the terminal may also have established a connection with the second network element that has been stored in the first network element. For example, the terminal may have established a connection with the second network element that has been stored in the first network element. A control plane connection or user plane connection is established. Based on this, when the above step 2103 is executed, that is: the first network element determines that the terminal needs to establish a user plane connection with the second network element, the first network element can first determine whether the second network element it has stored is available. When the stored second network element is available, for example: when the terminal has established or can establish a user plane connection with the stored second network element and the user plane connection is available, then the first network element performs the above In step 2104, the stored second network element can be directly determined as the above-mentioned target second network element. After that, optionally, when the first network element performs the above step 2106, when the stored second network element has not been indicated to the terminal, the first network element needs to perform step 2106 to store the stored second network element. The network element is indicated to the terminal, or when the stored second network element has been indicated to the terminal, the first network element may optionally perform step 2106, that is, the first network element may not perform step 2106, or , the first network element can perform step 2106 to re-indicate the stored second network element to the terminal for the first service. Optionally, after performing step 2106, if the terminal does not establish a user plane connection with the stored second network element, then the above steps 2107 and 2108 can be performed to implement the first service; if the terminal has established a user plane connection with the stored second network element, The user plane connection has been established with the second network element, the terminal no longer needs to perform the above step 2107, but can directly perform step 2108 to implement the second network element based on the user plane connection that has been established with the stored second network element. One business.

In some embodiments, if the above-mentioned stored second network element is unavailable, for example, there is no user plane connection between the terminal and the stored second network element or the stored second network element does not satisfy the current request. When the first business requirement or service scope is required, the first network element can perform the above step 2104 to reselect the second network element, select the target second network element in the above step 2104, and then perform subsequent steps 2105-2108. , so that the terminal successfully establishes a user plane connection with the target second network element and realizes the first service.

Optionally, in other embodiments, before executing the above steps 2103 and 2104, the second network element may not be stored in the first network element. At this time, when the above step 2103 is executed, that is: When a network element determines that the terminal needs to establish a user plane connection with the second network element, the first network element can then perform the above step 2104 to select the target second network element in the above step 2104, and perform the target second network element selection. At this time, additional consideration is given to whether the user plane connection is supported to provide the first service. After that, subsequent steps 2105-2108 can be performed so that the terminal successfully establishes a user plane connection with the target second network element and implements the first service.

FIG. 3A is an interactive schematic diagram of a user plane connection establishment method according to an embodiment of the present disclosure. As shown in Figure 3A, the embodiment of the present disclosure relates to a user plane connection establishment method for the first network element 1021. The above method includes:

Step 3101: The first network element receives the session establishment request sent by the terminal.

Step 3102: The first network element queries the terminal's contract data;

Step 3103: The first network element determines that the terminal needs to establish a user plane connection with the second network element;

Step 3104: The first network element selects the target second network element.

Step 3105: The first network element sends the first message to the terminal.

Step 3106: The first network element establishes an N4 session with the fifth network element.

For detailed introduction to steps 3101-3106, please refer to the description of the above embodiment.

The user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3106. For example, step S3101 can be implemented as an independent embodiment, and step S3102 can be implemented as an independent embodiment, but is not limited thereto.

Optionally, the above-mentioned step 3102 may be an optional step and may be optionally performed, for example, it may be performed or not performed.

In this implementation mode or example, if there is no contradiction, each step can be independent, combined or exchanged in any order. Optional methods or optional examples can be combined arbitrarily, and can be combined with any other implementation modes or other embodiments. Make any combination between steps.

FIG. 3B is an interactive schematic diagram of a user plane connection establishment method according to an embodiment of the present disclosure. As shown in Figure 3B, the embodiment of the present disclosure relates to a user plane connection establishment method for terminal 101. The above method includes:

Step 3201: The first network element receives the session establishment request sent by the terminal.

Step 3202: The first network element determines that the terminal needs to establish a user plane connection with the second network element;

Step 3203: The first network element selects the target second network element.

Step 3204: The first network element sends the first message to the terminal.

Optionally, the session establishment request is used to request the establishment of a protocol data unit PDU session of the first service;

Optionally, the second network element is used to provide the first service;

Optionally, the target second network element is: a second network element that provides the first service for the terminal;

Optionally, the first message is used to indicate the target second network element.

Optionally, the session establishment request includes at least one of the following:

The data network name DNN corresponding to the first business;

Single network slice selection auxiliary information S-NSSAI corresponding to the first service;

The terminal identifier of the terminal.

Optionally, after the first network element receives the session establishment request sent by the terminal, the method further includes:

Query the subscription data of the terminal based on the terminal identification; wherein the subscription data includes at least one of a first indication and a network element identification of the target second network element, and the first indication is used to indicate: The terminal needs to establish a user plane connection with the second network element.

Optionally, querying the subscription data of the terminal based on the terminal identifier includes:

Query the subscription data of the terminal from a third network element based on the terminal identifier; wherein the third network element is used to provide a unified data management function.

Optionally, the first network element determines that the terminal needs to establish a user plane connection with the second network element, including at least one of the following:

Determine that the terminal needs to establish a user plane connection with the second network element based on the preset policy;

It is determined in the contract data that the terminal needs to establish a user plane connection with the second network element;

It is determined that the terminal needs to establish a connection with the second network element according to the received dynamic policy information sent by the seventh network element, where the seventh network element is used to provide a policy control function.

Optionally, the first network element selects a target second network element, including at least one of the following:

Select the target second network element from at least one second network element registered on a fourth network element, where the fourth network element is used to provide a network storage function;

Select the target second network element based on the network element identifier and/or the first indication of the target second network element in the subscription data.

Optionally, selecting the target second network element from at least one second network element registered on the fourth network element includes:

Send a second message to the fourth network element, which may carry information for selecting the second network element, such as QoS requirements, service type, terminal location information, etc., and the second message is used to request all the information on the fourth network element. At least one registered second network element;

Receive a third message sent by the fourth network element, the third message indicating at least one second network element registered on the fourth network element;

Select the target second network element from at least one second network element registered on the fourth network element.

Optionally, the first network element selects a target second network element, including:

If the second network element stored by the first network element is unavailable, the first network element performs second network element reselection to select the target second network element.

Optionally, the method also includes:

The first network element establishes an N4 session with a fifth network element, and the fifth network element is used to provide user plane functions.

Optionally, the first message is a PDU session establishment accept message.

Optionally, the first service is a sensing service.

For detailed introduction to steps 3201-3205, please refer to the description of the above embodiment.

The user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3205. For example, step S3201 can be implemented as an independent embodiment, and step S3202 can be implemented as an independent embodiment, but is not limited thereto.

Optionally, the above-mentioned step 3206 may be an optional step and may be optionally performed, for example, it may be performed or not performed.

In this implementation mode or example, if there is no contradiction, each step can be independent, combined or exchanged in any order. Optional methods or optional examples can be combined arbitrarily, and can be combined with any other implementation modes or other embodiments. Make any combination between steps.

FIG. 4A is an interactive schematic diagram of a user plane connection establishment method according to an embodiment of the present disclosure. As shown in Figure 4A, the embodiment of the present disclosure relates to a user plane connection establishment method for network device 102. The above method includes:

Step 4101: The terminal sends a session establishment request to the first network element.

Step 4102: The terminal receives the first message sent by the first network element.

Step 4103: The terminal implements the first service by interacting with the target second network element.

Optionally, the method also includes:

Establish a user plane connection with the target second network element.

Optionally, the session establishment request is used to request the establishment of a PDU session of the first service;

Optionally, the first message is used to indicate a target second network element, and the target second network element is: a second network element that provides the first service for the terminal;

Optionally, the session establishment request includes at least one of the following:

DNN corresponding to the first business;

S-NSSAI corresponding to the first service;

The terminal identifier of the terminal.

Optionally, the relevant parameters in the session establishment request for accessing the PDU session of the first service are configured by the terminal based on local data, or configured by the terminal based on user equipment routing policy URSP rules. The relevant parameters may be, for example, DNN/S-NSSAI and other parameters;

Optionally, the interaction with the target second network element to implement the first service includes at least one of the following:

Receive the service result corresponding to the first service sent by the target second network element;

Send the obtained service data corresponding to the first service to the target second network element, and receive the service result corresponding to the first service sent by the target second network element;

Receive the service data corresponding to the first service sent by the target second network element, and determine the service result corresponding to the first service based on the service data corresponding to the first service;

Wherein, the service result corresponding to the first service sent by the target second network element is determined by the target second network element based on the service data corresponding to the first service obtained from the terminal and/or the radio access network RAN.

Optionally, the first service is a sensing service;

The business data corresponding to the first business is sensing data;

The business result corresponding to the first business is the perception result.

For detailed introduction to steps 4101-4103, please refer to the above embodiment description.

The user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of steps S4101 to S4103. For example, step S4101 can be implemented as an independent embodiment, and step S4102 can be implemented as an independent embodiment, but is not limited thereto.

In this implementation mode or example, if there is no contradiction, each step can be independent, combined or exchanged in any order. Optional methods or optional examples can be combined arbitrarily, and can be combined with any other implementation modes or other embodiments. Make any combination between steps.

FIG. 5A is a schematic flowchart of a user plane connection establishment method according to an embodiment of the present disclosure. As shown in Figure 5A, the embodiment of the present disclosure relates to a user plane connection establishment method for use in a communication system. The above method includes at least one of the following:

Step 5101: The terminal sends a session establishment request, which is used to request the establishment of a PDU session of the first service;

Step 5102: The first network element receives the session establishment request;

Step 5103: The first network element determines that the terminal needs to establish a user plane connection with the second network element; the second network element is used to provide the first service.

Step 5104: The first network element selects a target second network element, and the target second network element is: a second network element that provides the first service for the terminal.

Step 5105: The first network element sends a first message, where the first message is used to indicate the target second network element.

Step 5106: The terminal receives the first message.

Step 5107: The terminal implements the first service by interacting with the target second network element.

For optional implementation methods of steps 5101 to 5107, please refer to the description of the above embodiments.

In some embodiments, the above method may include the method of the above embodiments on the communication system side, terminal side, network terminal side, etc., which will not be described again here.

The user plane connection establishment method involved in the embodiment of the present disclosure may include at least one of steps S5101 to S5107. For example, step S5101 can be implemented as an independent embodiment, and step S5102 can be implemented as an independent embodiment, but is not limited thereto.

In this implementation mode or example, if there is no contradiction, each step can be independent, combined or exchanged in any order. Optional methods or optional examples can be combined arbitrarily, and can be combined with any other implementation modes or other embodiments. Make any combination between steps.

The following is an exemplary introduction to the above methods.

Embodiments of the present disclosure provide a method for supporting sensing services through the user plane, including:

- A PDU session for the awareness service is established and the SMF selects a NF that supports the awareness function (SF).

- Establish user plane connection between UE and SF.

Sensing information is exchanged between UE and SF.

Assume that the NF supporting the sensing function in 5GC is SF, and the sensing service is initiated by the UE. Sensing information processing can be completed in the UE or SF. The sensing information may be collected by the SF from the RAN or the UE, or the sensing information may be collected by the UE from other UEs or objects or the RAN. Aware services can be triggered by UE or network or AF.

In this embodiment, dedicated DNN/S-NSSAI is deployed for sensing services.

Figure 5B is a schematic flowchart of a user plane connection establishment method according to an embodiment of the present disclosure. As shown in Figure 5B, the method may include the following steps:

0. The sensing service is triggered by the UE/CN/AF. The UE determines or obtains an indication from the CN or application indicating that data exchange needs to be carried out between the UE and the SF through the user plane or that a session needs to be established between the UE and the SF for data exchange. Among them, step 0 is not shown in Figure 5B.

1. The UE initiates a PDU Session Establishment Request (PDU SessionEstablishment Request) to the DNN/S-NSSAI dedicated to sensing services. This request can be configured locally or through URSP rules.

2. AMF calls the Nsmf_PDU Session_CreateSMContext request service to send a PDU session establishment request to smf.

3. SMF calls Nsmf_PDU session_CreateSMContext response service.

4. SMF retrieves its session management subscription data. The SF selection information may be included in the subscription data. The SF selection information may be an indication that SF is required, and/or SF ID (The SMF retrieves Session ManagementSubscription data for corresponding SUPI, DNN and S-NSSAI if it is notavailable. The SF selection information may be included in the Subscriptiondata, the SF selection information can be the indication that SF is required, and/or the SF ID).

5. The SMF determines the user plane connection required to the SF based on the policy defined for the sensing service, such as the policy for the UE to access the DNN/S-NSSAI corresponding to the sensing service and/or the subscription data received in step 3.

6. The SMF determines the SF via the NRF or based on the subscription data received in step 3. If the SF is determined through NRF, then the SF should be registered with NRF and SMF calls the Nnrf_NFDiscovery service for SF discovery.

7. N4 session is established/modified to establish user plane connection within 5GC for connecting SF through user plane.

8. The SMF sends the PDU Session Establishment Accept (PDUSession Establishment Accept) with the SF information determined in step 6 to the UE via the AMF.

9. The user plane connection establishment between the UE and the SF is completed, including other steps in the existing PDU session establishment process.

10. Sensing service requests with sensing parameters exchanged between UE and SF through the user plane. The sensing parameter can be the aforementioned sensing data;

11. The SF collects sensing information from the RAN, and the sensing information can be the aforementioned sensing data.

12. If the sensing information is processed in the SF, after processing the sensing information, the output of the sensing service is delivered to the UE, otherwise, the sensing information can be sent to the UE. If the UE collects sensing information, the sensing information is sent from the UE to the SF if necessary.

Embodiments of the present disclosure also provide a device for implementing any of the above methods. For example, a device is provided. The device includes units or modules for implementing each step performed by a terminal in any of the above methods. As another example, another device is also proposed, including units or modules for implementing each step performed by the network device in any of the above methods. The network equipment includes access network equipment, core network functional nodes, core network equipment, etc.

It should be understood that the division of each unit or module in the above device is only a division of logical functions. In actual implementation, it can be fully or partially integrated into a physical entity, or it can also be physically separated. In addition, the units or modules in the device can be implemented in the form of the processor calling software: for example, the device includes a processor, the processor is connected to a memory, instructions are stored in the memory, and the processor calls the instructions stored in the memory to implement any of the above. Method or implement the functions of each unit or module of the above device, where the processor is, for example, a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and some or all of the functions of the units or modules can be implemented through the design of the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in a In one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and through the design of the logical relationship of the components in the circuit, the functions of some or all of the above units or modules are realized; for another example, in another implementation Among them, the above hardware circuit can be implemented by a programmable logic device (PLD). Taking Field Programmable Gate Array (FPGA) as an example, it can include a large number of logic gate circuits and can be configured through configuration files. Configure the connection relationship between logic gate circuits to realize the functions of some or all of the above units or modules. All units or modules of the above device may be fully implemented by the processor calling software, or may be fully implemented by hardware circuits, or part of the units or modules may be implemented by the processor calling software, and the remaining part may be implemented by hardware circuits.

In the embodiment of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor may be a circuit with instruction reading and execution capabilities, such as a central processing unit (Central Processing Unit, CPU), microprocessor, etc. Processor, graphics processing unit (GPU) (can be understood as a microprocessor), or digital signal processor (DSP), etc.; in another implementation, the processor can be configured through a hardware circuit Logical relationships realize certain functions. The logical relationships of the above-mentioned hardware circuits are fixed or can be reconstructed. For example, the processor is implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD). Hardware circuits, such as FPGA. In a reconfigurable hardware circuit, the process of the processor loading the configuration file and realizing the hardware circuit configuration can be understood as the process of the processor loading instructions to realize the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (Neural Network Processing Unit, NPU), tensor processing unit (Tensor Processing Unit, TPU), deep learning processing unit ( Deep learning Processing Unit (DPU), etc.

FIG. 6A is a schematic structural diagram of a terminal proposed by an embodiment of the present disclosure. As shown in Figure 6A, it includes: a receiving module, used to receive a session establishment request. The session establishment request is used to request the establishment of a protocol data unit PDU session of the first service. The PDU session is initiated and established by the terminal; a processing module, with In order to determine that the terminal needs to establish a user plane connection with the second network element; the second network element is used to provide the first service; the processing module is also used for the first network element to select a target second network element, the target second network element is: a second network element that provides the first service for the terminal; a sending module is used for the first network element to send a first message, and the first message is used to indicate that the Describe the target second network element. Optionally, the above-mentioned receiving module is used to perform the steps related to "receiving" performed in any of the above methods, the above-mentioned processing module is used to perform the steps related to "processing" performed in any of the above methods, and the above-mentioned sending module is used. The steps related to "sending" performed in any of the above methods will not be described again here.

FIG. 6B is a schematic structural diagram of a network device proposed by an embodiment of the present disclosure. As shown in Figure 6B, it includes: a sending module, configured to send a session establishment request, where the session establishment request is used to request the establishment of a PDU session of the first service;

a receiving module, configured to receive a first message, where the first message is used to indicate a target second network element, where the target second network element is: a second network element that provides a first service for the terminal; a processing module, Used to implement the first service by interacting with the target second network element. Optionally, the above-mentioned sending module is used to perform the steps related to "sending" performed in any of the above methods, the above-mentioned receiving module is used to perform the steps related to "receiving" performed in any of the above methods, and the above-mentioned processing module is used The steps related to "processing" performed in any of the above methods will not be described again here.

Figure 7A is a schematic structural diagram of a communication device 7100 proposed by an embodiment of the present disclosure. The communication device 7100 may be a network device (such as access network equipment, core network equipment, etc.), a terminal (such as user equipment, etc.), or a chip, chip system, or process that supports network equipment to implement any of the above methods. It can also be a chip, chip system, or processor that supports the terminal to implement any of the above methods. The communication device 7100 may be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.

As shown in Figure 7A, communications device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a special-purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute programs. Handler data. The processor 7101 is used to call instructions to cause the communication device 7100 to execute any of the above methods.

In some embodiments, communications device 7100 also includes one or more memories 7102 for storing instructions. Optionally, all or part of memory 7102 may also be external to communication device 7100.

In some embodiments, communication device 7100 also includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and other steps are performed by the processor 7101.

In some embodiments, the transceiver may include a receiver and a transmitter, and the receiver and transmitter may be separate or integrated together. Optionally, terms such as transceiver, transceiver unit, transceiver, and transceiver circuit may be interchanged with each other, terms such as transmitter, transmitting unit, transmitter, transmitting circuit may be interchanged with each other, and terms such as receiver, receiving unit, receiver, receiving circuit, etc. The terms are interchangeable.

Optionally, the communication device 7100 also includes one or more interface circuits 7104. The interface circuit 7104 is connected to the memory 7102. The interface circuit 7104 can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, interface circuit 7104 may read instructions stored in memory 7102 and send the instructions to processor 7101.

The communication device 7100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, a chip, or a chip system or a subsystem; (2) a collection of one or more ICs. Optionally, the above-mentioned IC collection may also include Storage components for storing data and programs; (3) ASIC, such as modem; (4) Modules that can be embedded in other devices; (5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment , handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.; (6) Others, etc.

FIG. 7B is a schematic structural diagram of a chip 7200 proposed by an embodiment of the present disclosure. For the case where the communication device 7100 may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip 7200 shown in FIG. 7B , but is not limited thereto.

The chip 7200 includes one or more processors 7201, and the processor 7201 is used to call instructions to cause the chip 7200 to perform any of the above methods.

In some embodiments, the chip 7200 also includes one or more interface circuits 7202. The interface circuit 7202 is connected to the memory 7203. The interface circuit 7202 can be used to receive signals from the memory 7203 or other devices. The interface circuit 7202 can be used to send signals to the memory 7203 or other devices. Other devices send signals. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201. Optionally, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

In some embodiments, chip 7200 also includes one or more memories 7203 for storing instructions. Alternatively, all or part of memory 7203 may be external to chip 7200.

The present disclosure also proposes a storage medium, and instructions are stored on the storage medium. When the instructions are run on the communication device 7100, the communication device 7100 is caused to perform any of the above methods. Optionally, the above storage medium is an electronic storage medium. Optionally, the above-mentioned storage medium is a computer-readable storage medium, but is not limited thereto. It may also be a storage medium readable by other devices. Optionally, the above storage medium may be a non-transitory storage medium, but is not limited thereto, it may also be a transitory storage medium.

The present disclosure also proposes a program product, which, when executed by the communication device 7100, causes the communication device 7100 to execute any of the above methods. Optionally, the above program product is a computer program product.

The present disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it 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 programs. When the computer program is loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present disclosure are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, high-density digital video disc (DVD)), or semiconductor media (eg, solid state disk, SSD)) etc.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered to be beyond the scope of this disclosure.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure. should be covered by the protection scope of this disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims (23)

1. A method for establishing a user plane connection, the method comprising:

a first network element receives a session establishment request sent by a terminal, wherein the session establishment request is used for requesting to establish a protocol data unit PDU session of a first service;

the first network element determines that the terminal needs to establish user plane connection with a second network element; the second network element is configured to provide the first service;

the first network element selects a target second network element, wherein the target second network element is: a second network element for providing the first service for the terminal;

and the first network element sends a first message to the terminal, wherein the first message is used for indicating the target second network element.

2. The method of claim 1, wherein the session establishment request comprises at least one of:

a data network name DNN corresponding to the first service;

selecting auxiliary information S-NSSAI by a single network slice corresponding to a first service;

and the terminal identification of the terminal.

3. The method of claim 2, wherein after the first network element receives the session establishment request sent by the terminal, the method further comprises:

inquiring subscription data of the terminal based on the terminal identification; wherein the subscription data includes at least one of a first indication and a network element identifier of the target second network element, where the first indication is used to indicate: the terminal needs to establish user plane connection with the second network element.

4. The method of claim 3, wherein the querying the subscription data of the terminal based on the terminal identification comprises:

inquiring subscription data of the terminal from a third network element based on the terminal identifier; wherein the third network element is configured to provide a unified data management function.

5. The method according to claim 3 or 4, wherein the first network element determining that the terminal needs to establish a user plane connection with a second network element comprises at least one of:

determining that the terminal needs to establish connection with a second network element based on a preset strategy;

determining that the terminal needs to establish connection with a second network element based on the subscription data;

and determining that the terminal needs to establish connection with the second network element according to the received dynamic policy information sent by the seventh network element, wherein the seventh network element is used for providing a policy control function.

6. The method according to any of claims 3-5, wherein the first network element selects a target second network element comprising at least one of:

selecting the target second network element from at least one second network element registered on a fourth network element, wherein the fourth network element is used for providing a network storage function;

and selecting the target second network element based on the network element identification and/or the first indication of the target second network element in the subscription data.

7. The method of claim 6, wherein the selecting the target second network element from at least one second network element registered on a fourth network element comprises:

sending a second message to a fourth network element, wherein the second message is used for requesting at least one second network element registered on the fourth network element;

receiving a third message sent by the fourth network element, wherein the third message indicates at least one second network element registered on the fourth network element;

and selecting the target second network element from at least one second network element registered on the fourth network element.

8. The method according to any of claims 1-7, wherein the first network element selecting a target second network element comprises:

the second network element stored in the first network element is unavailable, and the first network element performs second network element reselection to select the target second network element

9. The method of any one of claims 1-8, wherein the method further comprises:

and the first network element establishes an N4 session with a fifth network element, and the fifth network element is used for providing a user plane function.

10. The method according to any of claims 1-9, wherein the first message is a PDU session establishment accept message.

11. The method according to any of claims 1-10, wherein the first traffic is perceived traffic.

12. A method for establishing a user plane connection, the method comprising:

the terminal sends a session establishment request to a first network element, wherein the session establishment request is used for requesting to establish a PDU session of a first service;

the terminal receives a first message sent by a first network element, wherein the first message is used for indicating a target second network element, and the target second network element is: a second network element for providing the first service for the terminal;

and the terminal interacts with the target second network element to realize the first service.

13. The method of claim 12, wherein the method further comprises:

and the terminal establishes user plane connection with the target second network element.

14. The method of claim 12 or 13, wherein the session establishment request comprises at least one of:

DNN corresponding to the first service;

S-NSSAI corresponding to the first service;

and the terminal identification of the terminal.

15. A method according to any of claims 12-14, characterized in that the relevant parameters in the session establishment request for the PDU session for access to the first service are configured by the terminal based on local data or by the terminal based on user equipment routing policy, urs p, rules.

16. The method according to any of claims 12-15, wherein said implementing said first service by interacting with said target second network element comprises at least one of:

receiving a service result corresponding to a first service sent by the target second network element;

the service data corresponding to the acquired first service is sent to the target second network element, and a service result corresponding to the first service sent by the target second network element is received;

receiving service data corresponding to a first service sent by the target second network element, and determining a service result corresponding to the first service based on the service data corresponding to the first service;

and the service result corresponding to the first service, which is sent by the target second network element, is determined by the target second network element based on the service data corresponding to the first service, which is acquired from the terminal and/or the Radio Access Network (RAN).

17. The method according to any of claims 15-16, wherein the first traffic is perceived traffic;

the service data corresponding to the first service is sensing data;

the service result corresponding to the first service is a perception result.

18. A method of user plane connection establishment, characterized by being used in a communication system comprising a terminal and a first network element, the method comprising at least one of:

The terminal sends a session establishment request to a first network element, wherein the session establishment request is used for requesting to establish a PDU session of a first service;

the first network element receives a session establishment request sent by a terminal;

the first network element determines that the terminal needs to establish user plane connection with a second network element; the second network element is configured to provide the first service;

the first network element selects a target second network element, wherein the target second network element is: a second network element for providing the first service for the terminal;

the first network element sends a first message to the terminal, wherein the first message is used for indicating the target second network element;

the terminal receives a first message sent by a first network element;

the terminal interacts with the target second network element to realize the first service.

19. A network device for use as a first network element, comprising:

the receiving module is used for receiving a session establishment request sent by the terminal, wherein the session establishment request is used for requesting to establish a protocol data unit PDU session of a first service;

the processing module is used for determining that the terminal needs to establish user plane connection with a second network element; the second network element is configured to provide the first service;

The processing module is further configured to select a target second network element from the first network element, where the target second network element is: a second network element for providing the first service for the terminal;

the sending module is used for sending a first message to the terminal by the first network element, wherein the first message is used for indicating the target second network element.

20. A terminal, comprising:

a sending module, configured to send a session establishment request to a first network element, where the session establishment request is used to request to establish a PDU session of a first service;

the receiving module is configured to receive a first message sent by a first network element, where the first message is used to indicate a target second network element, and the target second network element is: a second network element for providing the first service for the terminal;

and the processing module is used for realizing the first service by interacting with the target second network element.

21. A communication device, comprising:

one or more processors;

wherein the processor is configured to invoke instructions to cause the communication device to perform the user plane connection establishment method of any of claims 1-11, 12-17.

22. A communication system comprising a terminal configured to implement the user plane connection establishment method of any of claims 1-11, a network device configured to implement the user plane connection establishment method of any of claims 12-17.

23. A storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the user plane connection establishment method of any one of claims 1-11, 12-17.