WO2022257133A1

WO2022257133A1 - Method and apparatus for establishing shared pdu session among multiple terminals, communication device, and storage medium

Info

Publication number: WO2022257133A1
Application number: PCT/CN2021/099822
Authority: WO
Inventors: 江小威; 洪伟; 于磊; 李艳华
Original assignee: 北京小米移动软件有限公司
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-12-15
Also published as: CN115918168A

Abstract

Embodiments of the present application provide a method for establishing a shared packet data unit (PDU) session among multiple terminals. The method is performed by a terminal, and the method comprises: sending, to a base station, a request message used for requesting to establish a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with a data network (DN).

Description

Method, device, communication device and storage medium for sharing PDU session among multiple terminals

technical field

The present disclosure relates to the technical field of wireless communication but is not limited to the technical field of wireless communication, and in particular relates to a method, device, communication device and storage medium for sharing a PDU session among multiple terminals.

Background technique

With the rapid development of mobile network communication technology, the era of Internet of Everything is coming. Due to the limited capability of a single terminal, complex requirements and tasks cannot be completed, and multiple terminals need to cooperate with each other to complete. A packet data unit (PDU, Packet Data Unit) session is a session between a terminal and a data network (DN, Data Network) to provide PDU connectivity services. The PDU connectivity service refers to the service that provides PDU exchange between the terminal and the DN determined by the data network name (DNN, Data Network Name). In related technologies, how to establish a PDU session is a problem that needs to be considered in an application scenario where multiple terminals jointly complete a task.

Contents of the invention

The embodiment of the present disclosure discloses a method, a device, a communication device and a storage medium for sharing a PDU session among multiple terminals.

According to the first aspect of an embodiment of the present disclosure, a method for sharing a PDU session between multiple terminals is provided, wherein the method is performed by a terminal, and the method includes:

Sending a request message for requesting establishment of a shared packet data unit PDU session to the base station;

Wherein, the shared PDU session is used for multiple terminals to communicate with the data network DN.

In one embodiment, the terminal is a terminal for performing specified tasks.

In one embodiment, the method also includes:

receiving a response message sent by the base station in response to the request message, where the response message is used to indicate that the shared PDU session has been established.

In one embodiment, the response message carries a session identifier indicating the shared PDU session.

In one embodiment, the request message carries a session identifier indicating the shared PDU session.

In one embodiment, before sending the request message to the base station for requesting establishment of the shared packet data unit PDU session, it further includes:

receiving indication information sent by the base station to trigger establishment of the shared PDU session.

In one embodiment, the indication information carries the session identifier.

In one embodiment, the request message carries request identification information for requesting to generate the shared PDU session.

According to a second aspect of an embodiment of the present disclosure, a method for sharing a PDU session between multiple terminals is provided, wherein the method is performed by a base station, and the method includes:

receiving a request message sent by the terminal requesting to establish a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with the DN;

Send the request message to the core network device.

In one embodiment, the terminal is a terminal for performing specified tasks.

In one embodiment, the method also includes:

receiving a response message sent by the core network device in response to the request message, where the response message is used to indicate that the shared PDU session has been established;

Send the response message to the terminal.

In one embodiment, before receiving the request message sent by the terminal to request to establish a shared PDU session, it further includes:

receiving indication information sent by the core network device to trigger establishment of the shared PDU session;

Send the indication information to the terminal.

In one embodiment, the indication information carries the session identifier.

According to a third aspect of an embodiment of the present disclosure, a method for sharing a PDU session between multiple terminals is provided, wherein the method is performed by a core network device, and the method includes:

receiving a request message from the base station to request establishment of a shared PDU session;

Wherein, the shared PDU session is used for multiple terminals to communicate with the DN.

In one embodiment, the terminal is a terminal for performing specified tasks.

In one embodiment, the method also includes:

determining that the request message is received;

The shared PDU session is established.

In one embodiment, the method also includes:

sending a response message indicating that the PDU session has been established to the base station.

In one embodiment, before receiving the request message sent by the base station to request the establishment of the shared PDU session, it further includes:

Sending instruction information triggering establishment of the shared PDU session to the base station.

In one embodiment, the indication information carries the session identifier.

In one embodiment, the establishment of the shared PDU session includes:

Generate a session identifier of the shared PDU session based on the request identifier information.

According to a fourth aspect of the embodiments of the present disclosure, an apparatus for sharing a PDU session among multiple terminals is provided, wherein the apparatus includes a sending module, wherein,

The sending module is configured to send a request message requesting to establish a shared packet data unit PDU session to the base station;

Wherein, the shared PDU session is used for multiple terminals to communicate with the application server DN.

According to a fifth aspect of an embodiment of the present disclosure, an apparatus for sharing a PDU session among multiple terminals is provided, wherein the apparatus includes a receiving module and a sending module, wherein,

The receiving module is configured to receive a request message sent by a terminal requesting to establish a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with the application server DN;

The sending module is configured to send the request message to the core network equipment.

According to a sixth aspect of an embodiment of the present disclosure, an apparatus for sharing a PDU session among multiple terminals is provided, wherein the apparatus includes a receiving module; wherein,

The receiving module is configured to receive a request message sent by the base station to request establishment of a shared PDU session;

According to a seventh aspect of the embodiments of the present disclosure, a communication device is provided, and the communication device includes:

processor;

memory for storing said processor-executable instructions;

Wherein, the processor is configured to implement the method described in any embodiment of the present disclosure when running the executable instruction.

According to an eighth aspect of the embodiments of the present disclosure, a computer storage medium is provided, the computer storage medium stores a computer executable program, and when the executable program is executed by a processor, the method described in any embodiment of the present disclosure is implemented.

In an embodiment of the present disclosure, a request message requesting establishment of a shared packet data unit PDU session is sent to the base station; wherein the shared PDU session is used for multiple terminals to communicate with the data network DN. Here, the terminal may request to establish a shared PDU session for multiple terminals to communicate with the DN, compared to the terminal that can only request the establishment of a PDU session for a single terminal to communicate with the DN, and each All terminals need to establish a PDU session. The shared PDU session can be used by multiple terminals to communicate with the DN. In this way, signaling interaction can be reduced, network resource utilization can be improved, and a good user experience can be brought.

Description of drawings

Fig. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment.

Fig. 2 is a schematic flowchart of a method for sharing a PDU session among multiple terminals according to an exemplary embodiment.

Fig. 3 is a schematic flowchart of a method for sharing a PDU session among multiple terminals according to an exemplary embodiment.

Fig. 4 is a schematic flowchart of a method for sharing a PDU session among multiple terminals according to an exemplary embodiment.

Fig. 5 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 6 is a schematic flowchart of a method for sharing a PDU session among multiple terminals according to an exemplary embodiment.

Fig. 7 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 8 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 9 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 10 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 11 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 12 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 13 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 14 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 15 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 16 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 17 is a schematic flowchart of a method for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 18 is a schematic diagram of an apparatus for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 19 is a schematic diagram of an apparatus for sharing a PDU session among multiple terminals according to an exemplary embodiment.

Fig. 20 is a schematic diagram of an apparatus for sharing a PDU session between multiple terminals according to an exemplary embodiment.

Fig. 21 is a schematic structural diagram of a terminal according to an exemplary embodiment.

Fig. 22 is a block diagram of a base station according to an exemplary embodiment.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the disclosed embodiments as recited in the appended claims.

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 embodiments of the present disclosure. As used in the examples of this disclosure and the appended claims, the singular forms "a" and "the" are also intended to include the plural unless the context clearly dictates otherwise. It should also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the embodiments of the present disclosure may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "at" or "when" or "in response to a determination."

For the purpose of brevity and ease of understanding, the term "greater than" or "less than" is used herein when characterizing a size relationship. However, those skilled in the art can understand that the term "greater than" also covers the meaning of "greater than or equal to", and "less than" also covers the meaning of "less than or equal to".

Please refer to FIG. 1 , which shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure. As shown in FIG. 1 , the wireless communication system is a communication system based on mobile communication technology, and the wireless communication system may include: several user equipments 110 and several base stations 120 .

Wherein, the user equipment 110 may be a device that provides voice and/or data connectivity to the user. The user equipment 110 can communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the user equipment 110 can be an Internet of Things user equipment, such as a sensor device, a mobile phone, and a computer with an Internet of Things user equipment , for example, may be a fixed, portable, pocket, hand-held, computer built-in, or vehicle-mounted device. For example, Station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote user equipment (remote terminal), access user equipment (access terminal), user device (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment). Alternatively, the user equipment 110 may also be equipment of an unmanned aerial vehicle. Alternatively, the user equipment 110 may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless user device connected externally to the trip computer. Alternatively, the user equipment 110 may also be a roadside device, for example, may be a street lamp, a signal lamp, or other roadside devices with a wireless communication function.

The base station 120 may be a network side device in a wireless communication system. Wherein, the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication, 4G) system, also known as a Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as new air interface system or 5G NR system. Alternatively, the wireless communication system may also be a next-generation system of the 5G system. Among them, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).

Wherein, the base station 120 may be an evolved base station (eNB) adopted in a 4G system. Alternatively, the base station 120 may also be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 120 adopts a centralized distributed architecture, it generally includes a centralized unit (central unit, CU) and at least two distributed units (distributed unit, DU). The centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link layer control protocol (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer protocol stack; A physical (Physical, PHY) layer protocol stack is set in the unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 120 .

A wireless connection may be established between the base station 120 and the user equipment 110 through a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as The wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a technical standard of a next-generation mobile communication network based on 5G.

In some embodiments, an E2E (End to End, end-to-end) connection may also be established between user equipment 110. For example, V2V (vehicle to vehicle, vehicle-to-vehicle) communication, V2I (vehicle to Infrastructure, vehicle-to-roadside equipment) communication and V2P (vehicle to pedestrian, vehicle-to-person) communication in vehicle to everything (V2X) communication Wait for the scene.

Here, the above user equipment may be regarded as the terminal equipment in the following embodiments.

In some embodiments, the foregoing wireless communication system may further include a network management device 130 .

Several base stations 120 are connected to the network management device 130 respectively. Wherein, the network management device 130 may be a core network device in a wireless communication system, for example, the network management device 130 may be a Mobility Management Entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC), MME). Alternatively, the network management device can also be other core network devices, such as Serving GateWay (SGW), Public Data Network Gateway (Public Data Network GateWay, PGW), policy and charging rule functional unit (Policy and Charging Rules Function, PCRF) or Home Subscriber Server (Home Subscriber Server, HSS), etc. The implementation form of the network management device 130 is not limited in this embodiment of the present disclosure.

In order to facilitate the understanding of those skilled in the art, the embodiments of the present disclosure list a plurality of implementation manners to clearly illustrate the technical solutions of the embodiments of the present disclosure. Of course, those skilled in the art can understand that the multiple embodiments provided by the embodiments of the present disclosure can be executed independently, or combined with the methods of other embodiments in the embodiments of the present disclosure, and can also be executed alone or in combination It is then executed together with some methods in other related technologies; this is not limited in the embodiment of the present disclosure.

In order to better understand the technical solutions disclosed in the embodiments of the present disclosure, the application scenarios of wireless network communication are described below:

In some embodiments, related procedures such as mobility management and session management are formulated for a single terminal. When the network manages the terminal and allocates resources to the terminal, it is aimed at a single terminal. In some application scenarios, complex requirements and tasks cannot be completed due to the limited capabilities of a single terminal. Need multiple terminals to cooperate with each other to complete. For example, in industrial scenarios, terminals such as robots, monitors, and controllers on the production line need to cooperate with each other to complete production tasks. For another example, terminals such as cameras, microphones, background processing servers, consoles, and audio equipment on a smart stage need to work together to present a perfect stage effect.

In one embodiment, different terminals perform the same task, respectively establishing separate PDU sessions to transmit data to an application server (AS, Application Server) of the data network. At this time, the network side cannot perceive multiple terminals performing the same task, so optimization and enhancement cannot be performed on the network side. For example, because the base station cannot schedule data of multiple terminals at the same time, the time difference between the services of multiple terminals reaching the application server is relatively large, and the service experience is relatively poor. For another example, a smart center needs to input multiple high-definition image sources at the same time to provide high-definition services. If the image of one of the multiple channels is not clear enough, it will provide the image quality with the worst definition. At this time, the network cannot reduce The image definition of other channels can save network resources and realize multi-channel coordination. Therefore, when multiple terminals perform the same task and there is a strong correlation between the services transmitted by multiple terminals, a session shared by multiple terminals can be established to simplify the session management process of establishing multiple terminals and optimize network resources. Allocate and improve the overall performance of multiple terminal services.

As shown in FIG. 2, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by the terminal, and the method includes:

Step 21, sending a request message requesting to establish a shared packet data unit PDU session to the base station;

Here, the terminal may be, but not limited to, a mobile phone, a wearable device, a vehicle-mounted terminal, a road side unit (RSU, Road Side Unit), a smart home terminal, an industrial sensing device or a medical device, etc. Here, the shared PDU session may be used for multiple terminals performing specified tasks to communicate with the data network DN. The multiple terminals performing specified tasks may be multiple terminals that need to cooperate with each other in order to complete a certain specified task. For example, a production line needs to complete product production tasks, and terminals such as robots, monitors, and controllers on the production line need to cooperate with each other to complete production tasks, so multiple terminals that perform specified tasks can include terminals such as robots, monitors, and controllers. Another example is that the stage needs to achieve good sound and light effects. The cameras, microphones, background processing servers, consoles, audio equipment and other terminals on the stage need to work together to achieve good sound and light effects. Multiple terminals performing specified tasks It can include terminals such as cameras, microphones, background processing servers, consoles, and audio equipment. Here, the DN communicating with the terminal includes at least one application server AS. Here, it should be noted that the terminal may communicate with the AS corresponding to the terminal, or multiple terminals may communicate with the same AS.

Here, the base station may be various types of base stations, for example, a base station of a third-generation mobile communication (3G) network, a base station of a fourth-generation mobile communication (4G) network, a base station of a fifth-generation mobile communication (5G) network, or other Evolved base station.

The core network equipment involved in the embodiments of the present disclosure may include an access and mobility management function (AMF, Access and Mobility Management Function) entity, a session management function (SMF, Session Management Function) entity and a user plane function (UPF, User Plane Function) one or more entities.

Here, the shared PDU session may be a session for multiple terminals performing specified tasks in the terminal group to communicate with the DN.

In an embodiment, a request message may be sent to the base station to request establishment of a shared PDU session, wherein the shared PDU session may be used for multiple terminals performing specified tasks in the terminal group to communicate with the DN. Here, the terminals included in the terminal group may be terminals associated with a specified task. For example, a production line needs to complete product production tasks, and terminals such as robots, monitors, and controllers on the production line need to cooperate with each other to complete production tasks. The terminals included in the terminal group can include terminals such as robots, monitors, and controllers. The terminals included in the terminal group may also be terminals associated with a certain service of a specified task. For example, a meeting needs to be held in a conference room, and the terminals involved in the meeting include multimedia service terminals (including audio terminals and video terminals) and attendance service terminals, and the terminals included in the terminal group can be audio terminals and video terminals for multimedia services. Here, it should be noted that the shared PDU session may also be described as a group PDU session or a group session in this embodiment.

In one embodiment, in response to multiple terminals needing to perform specified tasks, a request message requesting establishment of a shared packet data unit PDU session is sent to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Respond to the message. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In another embodiment, the terminal will receive the indication information sent by the core network through the base station to indicate the establishment of the shared PDU session; after receiving the indication information, the terminal will send a request message to the base station to request the establishment of the shared packet data unit PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Respond to the message. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In an embodiment, the multiple terminals communicate with the DN based on the shared PDU session may be multiple terminals communicate with the DN based on the same resource of the shared PDU session. For example, if the resource of the shared PDU session is A resource, the first terminal and the second terminal among the multiple terminals can use the A resource to perform data transmission between the terminal and the DN. It should be noted that the resources may be time domain resources and/or frequency domain resources, storage resources, or computing power resources.

In one embodiment, when multiple terminals communicating with the DN based on the shared PDU session perform data transmission, resource coordination among the terminals may be performed. For example, a first terminal among the multiple terminals uses B resources to perform data transmission between the first terminal and the DN, and a second terminal among the multiple terminals uses C resources to perform data transmission between the second terminal and the DN, When the B resource is insufficient, part of the C resource may be allocated to the first terminal for use.

In one embodiment, when multiple terminals communicating with the DN based on the shared PDU session perform data transmission, cross-terminal service flow scheduling can be performed. For example, the service flow for communication between the first terminal and DN is service flow A, and the service flow for communication between the second terminal and DN is service flow B. When the communication quality between the first terminal and DN is greater than the quality threshold , part of the service flow B may be allocated to the first terminal.

In one embodiment, multiple terminals communicating with the DN based on the shared PDU session may perform cross-terminal service flow switching when performing data transmission. For example, the service flow that the first terminal communicates with the DN is service flow A, and the service flow that the second terminal communicates with the DN is service flow B, where A is greater than B; when the first terminal communicates with the DN When the communication quality of is less than the quality threshold and the communication quality of the communication between the first terminal and the DN is greater than the quality threshold, service flow B may be allocated to the first terminal and service flow A may be allocated to the second terminal.

In an embodiment of the present disclosure, a request message requesting establishment of a shared packet data unit PDU session is sent to the base station; wherein, the shared PDU session is used for multiple terminals to communicate with the data network DN. Here, the terminal can request to establish a shared PDU session for multiple terminals to communicate with the DN, compared to the terminal can only request the establishment of a PDU session for a single terminal to communicate with the DN and each terminal needs to establish a PDU In the session mode, the shared PDU session can allow multiple terminals to communicate with the DN, thus reducing signaling interaction, improving network resource utilization, and bringing a good user experience.

It should be noted that those skilled in the art can understand that the methods provided in the embodiments of the present disclosure may be executed independently, or together with some methods in the embodiments of the present disclosure or some methods in related technologies.

As shown in Figure 3, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by the terminal, and the method includes:

Step 31: Receive a response message sent by the base station in response to the request message, where the response message is used to indicate that the shared PDU session has been established.

In one embodiment, the terminal sends a request message to the base station requesting to establish a shared packet data unit PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Respond to the message. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In an embodiment, the response message carries a session identifier indicating a shared PDU session.

In one embodiment, the request message carries a session identifier indicating the shared PDU session. It may be that the terminal sends a request message carrying the session identifier to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Response message carrying session ID. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

In another embodiment, the terminal may send a request message to the base station, where the request message carries request identification information for requesting to generate the shared PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating a session identifier for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the session identifier to the terminal through the base station. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

Here, it should be noted that, in response to the terminal receiving the response message carrying the session identifier, it is determined that the shared PDU session is established successfully. At this point, the terminal can communicate with the DN based on the established shared PDU session.

As shown in FIG. 4, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by the terminal, and the method includes:

Step 41: Receive the indication information that triggers the establishment of the shared PDU session sent by the base station.

Here, the indication information may be sent by the core network to the base station.

In one embodiment, in response to receiving the indication information sent by the base station to trigger establishment of the shared PDU session, a request message requesting establishment of the shared packet data unit PDU session is sent to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Respond to the message. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In one embodiment, in response to receiving the indication information sent by the base station to trigger establishment of the shared PDU session, the terminal sends a request message to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating a session identifier for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the session identifier to the terminal through the base station. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

In an embodiment, the terminal receives the instruction information sent by the base station to trigger establishment of the shared PDU session, where the instruction information carries a session identifier indicating the shared PDU session. The terminal sends a request message carrying the session identifier to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Response message carrying session ID. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

In one embodiment, the request message carries request identification information for requesting to generate a shared PDU session.

In an embodiment, the terminal sends a request message to the base station to request establishment of a shared packet data unit PDU session, where the request message carries request identification information for requesting to generate a shared PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating identification information for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the identification information to the terminal through the base station. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In an embodiment, in response to receiving the indication information sent by the base station to trigger establishment of the shared PDU session, the terminal sends a request message to the base station, where the request message carries request identification information for requesting to generate the shared PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating a session identifier for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the session identifier to the terminal through the base station. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

As shown in Figure 5, a method for sharing a PDU session between multiple terminals is provided in this embodiment, wherein the method is performed by a base station, and the method includes:

Step 51, receiving a request message sent by the terminal requesting to establish a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with the DN;

Step 52, sending a request message to the core network device.

Here, the terminal may be, but not limited to, a mobile phone, a wearable device, a vehicle-mounted terminal, a road side unit (RSU, Road Side Unit), a smart home terminal, an industrial sensing device or a medical device, etc. Here, the shared PDU session can be used for multiple terminals performing specified tasks to communicate with the DN. The multiple terminals performing specified tasks may be multiple terminals that need to cooperate with each other in order to complete a certain specified task. For example, a production line needs to complete product production tasks, and terminals such as robots, monitors, and controllers on the production line need to cooperate with each other to complete production tasks, so multiple terminals that perform specified tasks can include terminals such as robots, monitors, and controllers. Another example is that the stage needs to achieve good sound and light effects. The cameras, microphones, background processing servers, consoles, audio equipment and other terminals on the stage need to work together to achieve good sound and light effects. Multiple terminals performing specified tasks It can include terminals such as cameras, microphones, background processing servers, consoles, and audio equipment. Here, the DN communicating with the terminal includes at least one application server AS. Here, it should be noted that the terminal may communicate with the AS corresponding to the terminal, or multiple terminals may communicate with the same AS.

In an embodiment, it may be a request message sent by a receiving terminal requesting establishment of a shared PDU session, wherein the shared PDU session may be used for multiple terminals performing specified tasks in the terminal group to communicate with the DN. Here, the terminals included in the terminal group may be terminals associated with a specified task. For example, a production line needs to complete product production tasks, and terminals such as robots, monitors, and controllers on the production line need to cooperate with each other to complete production tasks. The terminals included in the terminal group can include terminals such as robots, monitors, and controllers. The terminals included in the terminal group may also be terminals associated with a certain service of a specified task. For example, a meeting needs to be held in a conference room, and the terminals involved in the meeting include multimedia service terminals (including audio terminals and video terminals) and attendance service terminals, and the terminals included in the terminal group can be audio terminals and video terminals for multimedia services. Here, it should be noted that the shared PDU session may also be described as a group PDU session or a group session in this embodiment.

In one embodiment, in response to multiple terminals needing to perform a designated task, the terminal sends a request message to the base station requesting to establish a shared packet data unit PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Respond to the message. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

As shown in FIG. 6, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by a base station, and the method includes:

Step 61, receiving a response message sent by the core network device in response to the request message, wherein the response message is used to indicate that the shared PDU session has been established;

Step 62, sending a response message to the terminal.

As shown in FIG. 7, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by a base station, and the method includes:

Step 71, receiving the instruction information sent by the core network device to trigger the establishment of the shared PDU session;

Step 72: Send indication information to the terminal.

In one embodiment, in response to the terminal receiving the indication information sent by the base station to trigger establishment of the shared PDU session, the terminal sends a request message requesting establishment of the shared packet data unit PDU session to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Respond to the message. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In one embodiment, in response to the terminal receiving the indication information sent by the base station to trigger establishment of the shared PDU session, the terminal sends a request message requesting establishment of the shared packet data unit PDU session to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating a session identifier for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the session identifier to the terminal through the base station. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

In one embodiment, in response to the terminal receiving the indication information sent by the base station to trigger the establishment of the shared PDU session, the terminal sends a request message to the base station, wherein the request message carries request identification information for requesting to generate the shared PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating a session identifier for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the session identifier to the terminal through the base station. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

As shown in FIG. 8, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by a core network device, and the method includes:

Step 81, receiving a request message from the base station for requesting establishment of a shared PDU session;

Here, the terminal may be, but not limited to, a mobile phone, a wearable device, a vehicle-mounted terminal, a road side unit (RSU, Road Side Unit), a smart home terminal, an industrial sensing device or a medical device, etc. Here, the shared PDU session may be used for multiple terminals performing specified tasks to communicate with the DN. The multiple terminals performing specified tasks may be multiple terminals that need to cooperate with each other in order to complete a certain specified task. For example, a production line needs to complete product production tasks, and terminals such as robots, monitors, and controllers on the production line need to cooperate with each other to complete production tasks, so multiple terminals that perform specified tasks can include terminals such as robots, monitors, and controllers. Another example is that the stage needs to achieve good sound and light effects. The cameras, microphones, background processing servers, consoles, audio equipment and other terminals on the stage need to work together to achieve good sound and light effects. Multiple terminals performing specified tasks It can include terminals such as cameras, microphones, background processing servers, consoles, and audio equipment. Here, the DN communicating with the terminal includes at least one application server AS. Here, it should be noted that the terminal may communicate with the AS corresponding to the terminal, or multiple terminals may communicate with the same AS.

In one embodiment, the terminal may send a request message to the base station to request establishment of a shared PDU session, wherein the shared PDU session may be used for multiple terminals performing specified tasks in the terminal group to communicate with the DN. Here, the terminals included in the terminal group may be terminals associated with a specified task. For example, a production line needs to complete product production tasks, and terminals such as robots, monitors, and controllers on the production line need to cooperate with each other to complete production tasks. The terminals included in the terminal group can include terminals such as robots, monitors, and controllers. The terminals included in the terminal group may also be terminals associated with a certain service of a specified task. For example, a meeting needs to be held in a conference room, and the terminals involved in the meeting include multimedia service terminals (including audio terminals and video terminals) and attendance service terminals, and the terminals included in the terminal group can be audio terminals and video terminals for multimedia services. Here, it should be noted that the shared PDU session may also be described as a group PDU session or a group session in this embodiment.

In one embodiment, when multiple terminals communicating with the DN based on the shared PDU session perform data transmission, cross-terminal service flow scheduling may be performed. For example, the service flow for communication between the first terminal and DN is service flow A, and the service flow for communication between the second terminal and DN is service flow B. When the communication quality between the first terminal and DN is greater than the quality threshold , part of the service flow B may be allocated to the first terminal.

As shown in FIG. 9, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by a core network device, and the method includes:

Step 91, determine that the request message is received;

Step 92, establishing a shared PDU session.

In one embodiment, the shared PDU session is established in response to receiving the request message.

In one embodiment, the core network device will establish a shared PDU session after receiving the request message. Here, establishing the shared PDU session includes generating a session identifier for the shared PDU session; The terminal sends a response message carrying the session identifier. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

As shown in FIG. 10, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by a core network device, and the method includes:

Step 101: Send a response message indicating that a PDU session has been established to the base station.

In another embodiment, the terminal may send the request message to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating a session identifier for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the session identifier to the terminal through the base station. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

As shown in FIG. 11 , this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by a core network device, and the method includes:

Step 111 , sending instruction information triggering establishment of a shared PDU session to the base station.

In one embodiment, the base station sends the indication information to the terminal; in response to receiving the indication information sent by the base station to trigger establishment of a shared PDU session, the terminal sends a request message to the base station to request establishment of a shared packet data unit PDU session. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Respond to the message. After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In one embodiment, the base station sends the indication information to the terminal; in response to receiving the indication information sent by the base station to trigger establishment of a shared PDU session, the terminal sends a request message to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message, where establishing a shared PDU session includes generating a session identifier for the shared PDU session; After the core network device establishes the shared PDU session, it will send a response message carrying the session identifier to the terminal through the base station. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

In an embodiment, the base station sends the indication information to the terminal; the terminal receives the indication information sent by the base station to trigger establishment of the shared PDU session, where the indication information carries a session identifier indicating the shared PDU session. The terminal sends a request message carrying the session identifier to the base station. The base station will send the request message to the core network device after receiving the request message; the core network device will establish a shared PDU session after receiving the request message; the core network device will send the request message to the terminal through the base station after establishing the shared PDU session Response message carrying session ID. After the terminal receives the response message carrying the session identifier, multiple terminals will communicate with the DN based on the established shared PDU session.

As shown in FIG. 12, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method is performed by a core network device, and the method includes:

Step 121, generate a session identifier of a shared PDU session based on the request identifier information.

As shown in FIG. 13, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method includes:

Step 131, the terminal sends a request message to the base station requesting to establish a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with the data network DN;

Step 132, after receiving the request message, the base station sends the request message to the core network device;

Step 133, the core network device will establish a shared PDU session after receiving the request message;

Step 134, the core network device sends a response message to the terminal through the base station after establishing the shared PDU session;

Step 135, after the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

Here, it should be noted that the embodiments of the present disclosure can be executed alone, or can be executed in combination with the methods of the above-mentioned other embodiments in the embodiments of the present disclosure, and can also be executed alone or in combination with some methods in other related technologies are executed together; this is not limited by the embodiment of the present disclosure. The specific details of the steps in the above embodiments can be referred to the description of the previous embodiments, and will not be repeated here. Of course, the above-mentioned embodiments are only for illustration, and it does not mean that the aforementioned steps must be executed in this order or coordinated in this manner.

As shown in FIG. 14, this embodiment provides a method for multiple terminals to share a PDU session, wherein the method includes:

Step 141, the core network sends instruction information triggering the establishment of a shared PDU session to the terminal through the base station; wherein, the shared PDU session is used for multiple terminals to communicate with the data network DN;

Step 142, in response to receiving the indication information sent by the base station to trigger the establishment of the shared PDU session, the terminal sends a request message requesting the establishment of the shared PDU session to the base station;

Step 143, after receiving the request message, the base station sends the request message to the core network device;

Step 144, the core network device will establish a shared PDU session after receiving the request message;

Step 145, the core network device sends a response message to the terminal through the base station after establishing the shared PDU session;

Step 146: After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

As shown in FIG. 15, this embodiment provides a method for sharing a PDU session between multiple terminals, wherein the method includes:

Step 151, the base station sends instruction information triggering the establishment of a shared PDU session to the terminal; wherein, the shared PDU session is used for multiple terminals to communicate with the data network DN;

Step 152, in response to receiving the indication information sent by the base station to trigger the establishment of the shared PDU session, the terminal sends a request message requesting the establishment of the shared PDU session to the base station;

Step 153, after receiving the request message, the base station sends the request message to the core network device;

Step 154, the core network device will establish a shared PDU session after receiving the request message;

Step 155, the core network device sends a response message to the terminal through the base station after establishing the shared PDU session;

Step 156: After the terminal receives the response message, multiple terminals communicate with the DN based on the established shared PDU session.

In order to better understand the embodiments of the present disclosure, the technical solution of the present disclosure is further described through an exemplary embodiment below:

Example 1

Please refer to Figure 16, the wireless communication system includes terminals UE1, UE2 and UE3, and the network side includes radio access network RAN, AMF

, SMF, UPF and application server AS-1.

Please refer to FIG. 17. In this embodiment, a method for sharing a PDU session between multiple terminals is provided, wherein the method includes:

Step 1. The terminal sends a request message to the base station requesting to establish a shared packet data unit PDU session. Wherein, the shared PDU session is used for multiple terminals to communicate with the data network DN. Here, the shared PDU session is a type of PDU session, which means that multiple terminals share the information of the PDU session (for example, share the same SMF, UPF and/or DNN). Here, the request message carries a session identifier indicating the shared PDU session. Or the request message carries request identification information;

Step 2, the base station sends a request message to the AMF;

Step 3, AMF sends a request message to SMF;

Step 4: After receiving the request message, the SMF establishes a shared PDU session. The process of establishing a PDU session includes establishing an N4 session. If the request message carries request identification information, a session identification is generated.

Step 5, SMF sends a response message to the AMF for the request message, where the response message carries the session identifier;

Step 6, AMF sends a response message to the base station;

Step 7, the base station sends a response message to the terminal.

As shown in FIG. 18, this embodiment provides an apparatus for sharing a PDU session between multiple terminals, wherein the apparatus includes a sending module 151, wherein,

A sending module 181, configured to send a request message to the base station requesting to establish a shared packet data unit PDU session;

As shown in FIG. 19, this embodiment provides an apparatus for sharing a PDU session between multiple terminals, wherein the apparatus includes a receiving module 161 and a sending module 192, wherein,

The receiving module 191 is configured to receive a request message sent by a terminal to request establishment of a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with the DN;

The sending module 192 is configured to send the request message to the core network device.

As shown in FIG. 20, this embodiment provides an apparatus for sharing a PDU session between multiple terminals, wherein the apparatus includes a receiving module 171; wherein,

The receiving module 201 is configured to receive a request message sent by the base station to request establishment of a shared PDU session;

An embodiment of the present disclosure provides a communication device, which includes:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to implement the method applied to any embodiment of the present disclosure when executing the executable instructions.

Wherein, the processor may include various types of storage media, which are non-transitory computer storage media, and can continue to memorize and store information thereon after the communication device is powered off.

The processor can be connected to the memory through a bus or the like, and is used to read the executable program stored in the memory.

An embodiment of the present disclosure further provides a computer storage medium, wherein the computer storage medium stores a computer executable program, and when the executable program is executed by a processor, the method of any embodiment of the present disclosure is implemented.

Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

As shown in FIG. 21 , an embodiment of the present disclosure provides a terminal structure.

Referring to the terminal 800 shown in FIG. 21, this embodiment provides a terminal 800, which specifically can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc. .

Referring to FIG. 21 , the terminal 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and communication component 816 .

The processing component 802 generally controls the overall operations of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 802 may include one or more modules that facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802 .

The memory 804 is configured to store various types of data to support operations at the device 800 . Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phonebook data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 806 provides power to various components of the terminal 800 . Power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for terminal 800 .

The multimedia component 808 includes a screen providing an output interface between the terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or a swipe action, but also detect duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC), which is configured to receive an external audio signal when the terminal 800 is in an operation mode, such as a call mode, a recording mode and a voice recognition mode. Received audio signals may be further stored in memory 804 or sent via communication component 816 . In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

The sensor component 814 includes one or more sensors for providing various aspects of a state assessment of the terminal 800 . For example, the sensor component 814 can detect the open/closed state of the device 800, the relative positioning of components, such as the display and the keypad of the terminal 800, the sensor component 814 can also detect the terminal 800 or a change in the position of a component of the terminal 800, and the user The presence or absence of contact with the terminal 800, the terminal 800 orientation or acceleration/deceleration and the temperature change of the terminal 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 and other devices. The terminal 800 can access a wireless network based on communication standards, such as Wi-Fi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, terminal 800 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, which can be executed by the processor 820 of the terminal 800 to complete the above method. For example, the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

As shown in FIG. 22 , an embodiment of the present disclosure shows a structure of a base station. For example, the base station 900 may be provided as a network side device. Referring to FIG. 22 , base station 900 includes processing component 922 , which further includes one or more processors, and a memory resource represented by memory 932 for storing instructions executable by processing component 922 , such as application programs. The application program stored in memory 932 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 922 is configured to execute instructions, so as to perform any of the aforementioned methods applied to the base station.

Base station 900 may also include a power component 926 configured to perform power management of base station 900, a wired or wireless network interface 950 configured to connect base station 900 to a network, and an input-output (I/O) interface 958. The base station 900 can operate based on an operating system stored in the memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or similar.

Other embodiments of the invention will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any modification, use or adaptation of the present invention, these modifications, uses or adaptations follow the general principles of the present invention and include common knowledge or conventional technical means in the technical field not disclosed in this disclosure . The specification and examples are to be considered exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It should be understood that the present invention is not limited to the precise constructions which have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

A method for multiple terminals to share a PDU session, wherein the method is performed by a terminal, and the method includes:

Sending a request message for requesting establishment of a shared packet data unit PDU session to the base station;

Wherein, the shared PDU session is used for multiple terminals to communicate with the data network DN.
The method according to claim 1, wherein the terminal is a terminal performing a specified task.
The method according to claim 1, wherein the method further comprises:

receiving a response message sent by the base station in response to the request message, where the response message is used to indicate that the shared PDU session has been established.
The method according to claim 3, wherein the response message carries a session identifier indicating the shared PDU session.
The method according to claim 1, wherein the request message carries a session identifier indicating the shared PDU session.
The method according to claim 5, wherein, before sending the request message to the base station for requesting establishment of a shared packet data unit PDU session, further comprising:

receiving indication information sent by the base station to trigger establishment of the shared PDU session.
The method according to claim 6, wherein the indication information carries the session identifier.
The method according to claim 1, wherein the request message carries request identification information for requesting to generate the shared PDU session.
A method for multiple terminals to share a PDU session, wherein the method is performed by a base station, and the method includes:

receiving a request message sent by the terminal requesting to establish a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with the DN;

Send the request message to the core network device.
The method according to claim 1, wherein the terminal is a terminal performing a specified task.
The method according to claim 9, wherein the method further comprises:

receiving a response message sent by the core network device in response to the request message, where the response message is used to indicate that the shared PDU session has been established;

Send the response message to the terminal.
The method according to claim 11, wherein the response message carries a session identifier indicating the shared PDU session.
The method according to claim 9, wherein the request message carries a session identifier indicating the shared PDU session.
The method according to claim 13, wherein, before the request message sent by the receiving terminal to request establishment of a shared PDU session, further comprising:

receiving indication information sent by the core network device to trigger establishment of the shared PDU session;

Send the indication information to the terminal.
The method according to claim 14, wherein the indication information carries the session identifier.
The method according to claim 11, wherein the request message carries request identification information for requesting to generate the shared PDU session.
A method for multiple terminals to share a PDU session, wherein the method is performed by a core network device, and the method includes:

receiving a request message from the base station to request establishment of a shared PDU session;

Wherein, the shared PDU session is used for multiple terminals to communicate with the DN.
The method according to claim 17, wherein the terminal is a terminal performing a specified task.
The method according to claim 17, wherein said method further comprises:

determining that the request message is received;

The shared PDU session is established.
The method according to claim 19, wherein said method further comprises:

sending a response message indicating that the PDU session has been established to the base station.
The method according to claim 20, wherein the response message carries a session identifier indicating the shared PDU session.
The method according to claim 17, wherein the request message carries a session identifier indicating the shared PDU session.
The method according to claim 22, wherein, before receiving the request message sent by the base station for requesting establishment of a shared PDU session, further comprising:

Sending instruction information triggering establishment of the shared PDU session to the base station.
The method according to claim 23, wherein the indication information carries the session identifier.
The method according to claim 17, wherein the request message carries request identification information for requesting to generate the shared PDU session.
The method according to claim 24, wherein said establishing said shared PDU session comprises:

Generate a session identifier of the shared PDU session based on the request identifier information.
A device for sharing a PDU session between multiple terminals, wherein the device includes a sending module, wherein,

The sending module is configured to send a request message requesting to establish a shared packet data unit PDU session to the base station;

Wherein, the shared PDU session is used for multiple terminals to communicate with the DN.
A device for sharing a PDU session between multiple terminals, wherein the device includes a receiving module and a sending module, wherein,

The receiving module is configured to receive a request message sent by a terminal requesting to establish a shared PDU session, wherein the shared PDU session is used for multiple terminals to communicate with the DN;

The sending module is configured to send the request message to the core network equipment.
A device for sharing a PDU session between multiple terminals, wherein the device includes a receiving module; wherein,

The receiving module is configured to receive a request message sent by the base station to request establishment of a shared PDU session;

Wherein, the shared PDU session is used for multiple terminals to communicate with the DN.
A communication device, comprising:

memory;

The processor, connected to the memory, is configured to implement the method according to any one of claims 1-8, 9-16 or 17-26 by executing computer-executable instructions stored in the memory.
A computer storage medium, the computer storage medium stores computer-executable instructions, and the computer-executable instructions can implement the method described in any one of claims 1 to 8, 9 to 16, or 17 to 26 after being executed by a processor. method.