Service distribution processing method and device and storage medium

Abstract

The invention discloses a service shunting processing method and device and a storage medium, relates to the technical field of communication, and is used for realizing the purpose of shunting a service flow for a user terminal. The method comprises the following steps: receiving first shunting rule request information from an AMF; the first shunting rule request information comprises a first TAC of the user terminal and an access network type of the user terminal; the first shunting rule request information is used for requesting a shunting rule; determining a target shunting UPF based on the first shunting rule request information; the target offload UPF comprises a first offload UPF or a second offload UPF, the first offload UPF is used for offload private network services, and the second offload UPF is used for offload public network services; sending the target shunting rule to the target shunting UPF; the target shunting rule is determined by the PCF based on the first shunting rule request information. The method and the device are used in a user terminal service shunting process.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a service traffic splitting processing method, apparatus, and storage medium. Background Art

[0002] With the continuous emergence of industrial Internet services, Internet of Things application services, and digital services, the demand for private networks (i.e., private networks) in large enterprise parks (private network parks) is gradually increasing. Customers in fields such as manufacturing, logistics, ports, power, and chemical industries are in urgent need of private network solutions for the 5th Generation Mobile Communication Technology (5G) industry.

[0003] In related technologies, the networks received by the user terminal inside and outside the private network park are different, and there are also obvious differences in the traffic splitting rules inside and outside the private network park. Therefore, how to achieve traffic splitting for the service flow of the user terminal is still a technical problem to be solved. Summary of the Invention

[0004] This application provides a service traffic splitting processing method, apparatus, and storage medium, which are used to achieve the purpose of traffic splitting for the service flow of the user terminal.

[0005] To achieve the above object, this application adopts the following technical solutions:

[0006] In a first aspect, this application provides a service traffic splitting processing method, which is applied to the session management function SMF of the large network and includes: receiving first traffic splitting rule request information from the access and mobility management function AMF; the first traffic splitting rule request information includes: the first tracking area code TAC of the user terminal and the access network type of the user terminal; the first traffic splitting rule request information is used to request a traffic splitting rule; based on the first traffic splitting rule request information, determining a target traffic splitting user plane function UPF; the target traffic splitting UPF includes: a first traffic splitting UPF or a second traffic splitting UPF, the first traffic splitting UPF is used to split private network services, and the second traffic splitting UPF is used to split public network services; sending a target traffic splitting rule to the target traffic splitting UPF; the target traffic splitting rule is determined by the policy control function PCF based on the first traffic splitting rule request information.

[0007] In a possible implementation, obtaining the second TAC to which the private network park belongs; the private network park is used to provide private network services; in the case where the second TAC includes the first TAC and the access network type of the user terminal is a 5th generation communication 5G network, determining the first traffic splitting UPF as the target traffic splitting UPF.

[0008] In a possible implementation, sending a first target traffic splitting rule to the first traffic splitting UPF; the first target traffic splitting rule is used to split private network services.

[0009] In a possible implementation, receive second traffic splitting rule request information from the AMF; the second traffic splitting rule request information includes: the third TAC of the user terminal and the second access network type of the user terminal; in the case that the second TAC does not include the third TAC and / or the access network type of the user terminal is a non-5G network, determine the second traffic splitting UPF as the target traffic splitting UPF; send a second target traffic splitting rule to the second traffic splitting UPF; the second target traffic splitting rule is used to split public network services.

[0010] In a possible implementation, obtain the second TAC to which the private network park belongs; the private network park is used to provide private network services; in the case that the second TAC does not include the first TAC and / or the access network type of the user terminal is a non-5G network, determine the second traffic splitting UPF as the target traffic splitting UPF.

[0011] In a possible implementation, send a second target traffic splitting rule to the second traffic splitting UPF; the second target traffic splitting rule is used to split public network services.

[0012] In a possible implementation, receive third traffic splitting rule request information from the AMF; the third traffic splitting rule request information includes: the fourth TAC of the user terminal and the third access network type of the user terminal; in the case that the second TAC includes the fourth TAC and the access network type of the user terminal is a 5G network, determine the first traffic splitting UPF as the target traffic splitting UPF; send a first target traffic splitting rule to the first traffic splitting UPF; the first target traffic splitting rule is used to split private network services.

[0013] In a possible implementation, send a traffic splitting rule request message to the PCF, the traffic splitting rule request message includes a first event or a second event; the first event is that the TAC of the user terminal belongs to the second TAC to which the private network park belongs and the access network type of the user terminal is a 5G network; the second event is that the TAC of the user terminal does not belong to the second TAC to which the private network park belongs and / or the access network type of the user terminal is a non-5G network; receive the target traffic splitting rule from the PCF.

[0014] In a second aspect, the present application provides a service traffic splitting processing device, including: a communication unit and a processing unit; the communication unit is configured to receive first traffic splitting rule request information from the AMF; the first traffic splitting rule request information includes: a first tracking area code (TAC) of the user terminal and the access network type of the user terminal; the first traffic splitting rule request information is used to request a traffic splitting rule; the processing unit is configured to determine a target traffic splitting user plane function (UPF) based on the first traffic splitting rule request information; the target traffic splitting UPF includes: a first traffic splitting UPF or a second traffic splitting UPF, the first traffic splitting UPF is used to split private network services, and the second traffic splitting UPF is used to split public network services; the communication unit is further configured to send a target traffic splitting rule to the target traffic splitting UPF; the target traffic splitting rule is determined by the PCF based on the first traffic splitting rule request information.

[0015] In a possible implementation, the processing unit is configured to obtain a second TAC to which the private network park belongs; the private network park is used to provide private network services; in the case where the second TAC includes the first TAC and the access network type of the user terminal is a fifth-generation communication (5G) network, determine the first traffic splitting UPF as the target traffic splitting UPF.

[0016] In a possible implementation, the communication unit is configured to send a first target traffic splitting rule to the first traffic splitting UPF; the first target traffic splitting rule is used to split private network services.

[0017] In a possible implementation, the communication unit is configured to receive second traffic splitting rule request information from the AMF; the second traffic splitting rule request information includes: a third TAC of the user terminal and a second access network type of the user terminal; the processing unit is configured to determine the second traffic splitting UPF as the target traffic splitting UPF in the case where the second TAC does not include the third TAC and / or the access network type of the user terminal is a fourth-generation communication non-5G network; the communication unit is configured to send a second target traffic splitting rule to the second traffic splitting UPF; the second target traffic splitting rule is used to split public network services.

[0018] In a possible implementation, the processing unit is configured to obtain a second TAC to which the private network park belongs; the private network park is used to provide private network services; in the case where the second TAC does not include the first TAC and / or the access network type of the user terminal is a non-5G network, determine the second traffic splitting UPF as the target traffic splitting UPF.

[0019] In a possible implementation, the communication unit is configured to send a second target traffic splitting rule to the second traffic splitting UPF; the second target traffic splitting rule is used to split public network services.

[0020] In a possible implementation, a communication unit is configured to receive third traffic splitting rule request information from the AMF; the third traffic splitting rule request information includes: a fourth TAC of the user terminal and a third access network type of the user terminal; a processing unit is configured to determine a first traffic splitting UPF as the target traffic splitting UPF when the second TAC includes the fourth TAC and the access network type of the user terminal is a 5G network; the communication unit is configured to send a first target traffic splitting rule to the first traffic splitting UPF; the first target traffic splitting rule is used for splitting private network services.

[0021] In a possible implementation, the communication unit is further configured to: send a traffic splitting rule request message to the PCF, the traffic splitting rule request message includes a first event or a second event; the first event is that the TAC of the user terminal belongs to the second TAC to which the private network park belongs and the access network type of the user terminal is a 5G network; the second event is that the TAC of the user terminal does not belong to the second TAC to which the private network park belongs, and / or the access network type of the user terminal is a non-5G network; receive a target traffic splitting rule from the PCF.

[0022] In a third aspect, the present application provides a service traffic splitting processing device, the service traffic splitting processing device includes: a processor and a memory; wherein, the memory is used to store computer execution instructions, when the service traffic splitting processing device runs, the processor executes the computer execution instructions stored in the memory, so that the service traffic splitting processing device executes the service traffic splitting processing method described in the first aspect and any possible implementation manner of the first aspect.

[0023] In a fourth aspect, the present application provides a computer-readable storage medium, instructions are stored in the computer-readable storage medium, when the instructions in the computer-readable storage medium are executed by the processor of the service traffic splitting processing device, the service traffic splitting processing device can execute the service traffic splitting processing method described in the first aspect and any possible implementation manner of the first aspect.

[0024] In a fifth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a computer program or instructions to implement the service traffic splitting processing method described in the first aspect and any possible implementation manner of the first aspect.

[0025] In a sixth aspect, a computer program product containing instructions is provided, when it runs on a computer, it enables the computer to execute the service traffic splitting processing method described in the first aspect and any possible implementation manner of the first aspect.

[0026] These aspects or other aspects of the present application will be more clearly understood in the following description.

[0027] The above solution brings at least the following beneficial effects: The embodiment of the present application provides a service splitting processing method. The large network SMF receives a first splitting rule request message from the AMF, which includes the first TAC of the user terminal and the access network type of the user terminal. Since the private network park can only provide private network services for user terminals with 5G service flows within the park, the large network SMF can determine the UPF for splitting private network services or the UPF for splitting public network services as the target splitting UPF based on the first splitting rule request message. In this way, the large network SMF can send the target splitting rule to the target splitting UPF, enabling the target splitting UPF to split the service flow. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a private network networking architecture diagram provided by the embodiment of the present application;

[0030] Figure 2 It is a structural schematic diagram of a service splitting processing device provided by the embodiment of the present application;

[0031] Figure 3 It is a flowchart of a service splitting processing method provided by the embodiment of the present application;

[0032] Figure 4 It is a flowchart of a service splitting processing method provided by the embodiment of the present application;

[0033] Figure 5 It is a flowchart of a service splitting processing method provided by the embodiment of the present application;

[0034] Figure 6 It is a flowchart of a service splitting processing method provided by the embodiment of the present application;

[0035] Figure 7 It is a flowchart of a service splitting processing method provided by the embodiment of the present application;

[0036] Figure 8 It is a flowchart of a service splitting processing method provided by the embodiment of the present application;

[0037] Figure 9 It is a flowchart of a service splitting processing method provided by the embodiment of the present application;

[0038] Figure 10Flowchart of a service traffic splitting and processing method provided by an embodiment of the present application;

[0039] Figure 11 Flowchart of a service traffic splitting and processing method provided by an embodiment of the present application;

[0040] Figure 12 Flowchart of a service traffic splitting and processing method provided by an embodiment of the present application;

[0041] Figure 13 Flowchart of a service traffic splitting and processing method provided by an embodiment of the present application;

[0042] Figure 14 Flowchart of a service traffic splitting and processing method provided by an embodiment of the present application;

[0043] Figure 15 Structural schematic diagram of a service traffic splitting and processing device provided by an embodiment of the present application. Detailed implementation manners

[0044] The term "and / or" in this document is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone.

[0045] Terms such as "first" and "second" in the description and drawings of the present application are used to distinguish different objects or different processes for the same object, rather than to describe the specific order of the objects.

[0046] In addition, the terms "including" and "having" and any variations thereof mentioned in the description of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include other unlisted steps or units, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0047] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0048] In the description of the present application, unless otherwise specified, the meaning of "a plurality" refers to two or more.

[0049] With the continuous emergence of industrial Internet services, Internet of Things application services, and digitalization services, the demand for private networks (i.e., private networks) in large enterprise parks (private network parks) is gradually increasing. Customers in fields such as manufacturing, logistics, ports, power, and chemicals are in urgent need of private network solutions for the 5G industry.

[0050] In related technologies, the networks received by the user terminal inside and outside the private network park are different, and there are also obvious differences in the traffic splitting rules inside and outside the private network park. Therefore, how to achieve traffic splitting for the service flow of the user terminal is a technical problem that still needs to be solved.

[0051] To solve the technical problems existing in related technologies, an embodiment of the present application provides a service traffic splitting processing method. The large network SMF receives a first traffic splitting rule request message from the AMF, which includes the first TAC of the user terminal and the access network type of the user terminal. Since the private network park can only provide private network services for user terminals with 5G service flows within the park, the large network SMF can determine a UPF for splitting private network services or a UPF for splitting public network services as the target traffic splitting UPF based on the first traffic splitting rule request message. In this way, the large network SMF can send the target traffic splitting rule to the target traffic splitting UPF, enabling the target traffic splitting UPF to split the service flow.

[0052] The embodiment of the present application is applied to a private network networking architecture, such as Figure 1 , the private network networking architecture includes: Policy Control Function (PCF), large network Session Management Function (SMF) / GW-C, park SMF / GW-C, first traffic splitting User Plane Function (UPF) / GW-U, second traffic splitting UPF / GW-U, park server, public network server, base station. Within the scope of an SMF Pool of an operator, in actual network deployment, a pair of dedicated large network SMF and UPF (park SMF and first traffic splitting UPF in the figure) may be deployed to divert private network services. Considering the need for relative isolation between private network services and public network services for network security, the park UPF usually does not configure a public network exit. In this way, the first traffic splitting UPF cannot directly divert Internet services and can only divert private network services. The base stations within the park and the large network base stations are both connected to the first traffic splitting UPF and the second traffic splitting UPF.

[0053] Whether the user terminal is inside or outside the park, the user terminal creates an initial session using a common DNN, so the user terminal will select the large network SMF. The user terminal obtains the traffic splitting policy from the PCF through the large network SMF.

[0054] It should be noted that considering device disaster recovery, the large network SMF / GW-C, campus SMF / GW-C, first shunting UPF / GW-U, and second shunting UPF / GW-U all have backup devices. The backup devices are fully interconnected with the primary devices, and at the same time, the connection methods with the surrounding network elements are the same as those of the primary devices. When the user terminal is always within the campus service range, the large network SMF / GW-C and the campus SMF / GW-C are the same device.

[0055] It should be explained that the private network networking architecture is applicable to 4G access scenarios. When the user terminal accesses the network via 4G, the core network adopts the converged network elements of the 4th-Generation Mobile Communication Technology (4G) and the 5th-Generation Mobile Communication Technology (5G), that is, the SMF is integrated with the GW-C, and the UPF is integrated with the GW-U. The integration of 4G and 5G network elements includes two cases: the 4G and 5G converged network elements do not retain the functions of the 4G network elements, and the 4G and 5G converged network elements retain the functions of the 4G network elements.

[0056] The following separately introduces the shunting processes when the 4G and 5G converged network elements do not retain the functions of the 4G network elements.

[0057] Shunting process 1: After the user terminal enters the private network campus, whether accessing via 4G or 5G, the first UPF is used as the shunting point, and the shunting rules within the campus are used. For example, private network services 1, 2, and 3 can be used, and the shunting point shunts services 1, 2, and 3 to the campus server.

[0058] Shunting process 2: When the user terminal accesses the network outside the campus, the second UPF is used as the shunting point. Since service 3 is highly sensitive and is not allowed to be used by the user terminal outside the campus, at this time, only services 1 and 2 may be available, and the shunting point shunts services 1 and 2 to the campus Server.

[0059] The following separately introduces the shunting processes when the 4G and 5G converged network elements retain the functions of the 4G network elements.

[0060] Shunting process 3: When accessing via 4G within the campus, the second UPF is used for shunting to achieve downward compatibility; when the user terminal is within the campus and accesses via 5G, the shunting rules within the campus are used.

[0061] The technical solution of the embodiment of the present application can be applied to various communication systems. The communication system can be a third generation partnership project (3GPP) communication system, for example, a long term evolution (LTE) system, or a 5G mobile communication system, an NR system, a new radio vehicle to everything (NR V2X) system. It can also be applied to a system with hybrid networking of LTE and 5G, or a device-to-device (D2D) communication system, a machine to machine (M2M) communication system, an Internet of Things (IoT), and other next-generation communication systems. It can also be a non-3GPP communication system, without limitation.

[0062] The technical solution of the embodiment of the present application can be applied to various communication scenarios. For example, it can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra reliable low latency communication (URLLC), machine type communication (MTC), massive machine type communications (mMTC), SA, D2D, V2X, and IoT and other communication scenarios.

[0063] Among them, the above-mentioned communication systems and communication scenarios applicable to the present application are only illustrative examples. The communication systems and communication scenarios applicable to the present application are not limited to this. It is uniformly stated here and will not be repeated below.

[0064] In some embodiments, the terminal device involved in the present application may be a device for implementing communication functions. The terminal device may also be referred to as a user equipment (UE), a terminal, an access terminal, a user unit, a user station, a mobile station (MS), a remote station, a remote terminal, a mobile terminal (MT), a user terminal, a wireless communication device, a user agent, or a user device, etc. The terminal device may be, for example, a wireless terminal or a wired terminal in IoT, V2X, D2D, M2M, 5G network, or a future evolved PLMN. A wireless terminal may refer to a device with wireless transceiver functions, which can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on water (such as a ship, etc.); it can also be deployed in the air (such as an airplane, a balloon, a satellite, etc.).

[0065] Exemplarily, the terminal device may be a drone, an IoT device (for example, a sensor, a water meter, an electricity meter, etc.), a V2X device, a station (ST) in wireless local area networks (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication functions, a computing device or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device (which may also be referred to as a wearable intelligent device), a tablet computer or a computer with wireless transceiver functions, a virtual reality (VR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a vehicle-mounted terminal, a vehicle with vehicle-to-vehicle (V2V) communication capabilities, a connected vehicle, a drone with unmanned aerial vehicle to unmanned aerial vehicle (U2U) communication capabilities, and so on. The terminal may be mobile or fixed, and the present application does not make specific limitations thereon.

[0066] To implement the service traffic splitting processing method provided by the embodiments of the present application, the embodiments of the present application provide a service traffic splitting processing device for executing the service traffic splitting processing method provided by the embodiments of the present application. Figure 2 It is a schematic structural diagram of a service traffic splitting processing device provided by the embodiments of the present application. As Figure 2 shown, the service traffic splitting processing device 200 includes at least one processor 201, a communication line 202, and at least one communication interface 204, and may further include a memory 203. Among them, the processor 201, the memory 203, and the communication interface 204 can be connected through the communication line 202.

[0067] The processor 201 can be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, for example: one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs).

[0068] The communication line 202 may include a path for transmitting information between the above components.

[0069] The communication interface 204 is used to communicate with other devices or communication networks and can use any device such as a transceiver, such as Ethernet, radio access network (RAN), WLAN, etc.

[0070] The memory 203 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or any other medium that can be used to include or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0071] In a possible design, the memory 203 can exist independently of the processor 201, that is, the memory 203 can be an external memory of the processor 201. At this time, the memory 203 can be connected to the processor 201 through the communication line 202, used to store execution instructions or application program codes, and be controlled by the processor 201 to execute, so as to implement the service traffic splitting processing method provided in the following embodiments of the present application. In another possible design, the memory 203 can also be integrated with the processor 201, that is, the memory 203 can be an internal memory of the processor 201. For example, this memory 203 is a cache, which can be used to temporarily store some data and instruction information, etc.

[0072] As an implementable manner, the processor 201 can include one or more CPUs, such as Figure 2 CPU0 and CPU1 in Figure 2 . As another implementable manner, the service traffic splitting processing device 200 can include multiple processors, such as

[0073] the processor 201 and the processor 207 in Figure 3 . As yet another implementable manner, the service traffic splitting processing device 200 can also include an output device 205 and an input device 206. Figure 3 Shown as follows, this service traffic splitting processing method includes: S301 - S303.

[0074] S301. The large network SMF receives the first traffic splitting rule request information from the core access and mobility management function (AMF).

[0075] Among them, the first traffic splitting rule request information includes: the first tracking area code (TAC) of the user terminal and the access network type of the user terminal; the first traffic splitting rule request information is used to request a traffic splitting rule.

[0076] S302. The large network SMF determines the target traffic splitting UPF based on the first traffic splitting rule request information.

[0077] Among them, the target traffic splitting UPF includes: the first traffic splitting UPF or the second traffic splitting UPF. The first traffic splitting UPF is used to split private network services, and the second traffic splitting UPF is used to split public network services.

[0078] Optionally, the second traffic splitting UPF is used to split the IP address of the user terminal to the private network and allocate public network service rules to the public network.

[0079] In a possible implementation, the PCF determines the target traffic splitting UPF based on the first TAC of the user terminal and the access network type of the user terminal.

[0080] Optionally, the access network type includes: non-5G network or 5G network. The non-5G network includes at least one of the following: 4G network, 3th-Generation Mobile Communication Technology (3G) network, and 2th-Generation Mobile Communication Technology (2G) network.

[0081] S303. The large network SMF sends the target traffic splitting rule to the target traffic splitting UPF.

[0082] Among them, the target traffic splitting rule is determined by the PCF based on the first traffic splitting rule request information.

[0083] In a possible implementation, before the large network SMF sends the target traffic splitting rule to the target traffic splitting UPF, it sends a traffic splitting rule request message to the PCF. The traffic splitting rule request message includes the first event or the second event; it receives a traffic splitting rule response message from the PCF, and the traffic splitting rule response message includes the target traffic splitting rule.

[0084] Optionally, the first event is that the TAC of the user terminal belongs to the second TAC to which the private network park belongs, and the access network type of the user terminal is a 5G network; the second event is that the TAC of the user terminal does not belong to the second TAC to which the private network park belongs, and / or the access network type of the user terminal is a non-5G network.

[0085] It should be noted that after the PCF receives the shunting rule request message sent by the large network SMF, it determines the target shunting rule based on the event in the shunting rule request message and the shunting UPF mapping table. The target shunting rule includes an uplink classifier UPF (Uplink Classifier, ULCL) rule.

[0086] Optionally, the shunting UPF mapping table includes the first event, the shunting rule corresponding to the first event, the second event, and the shunting rule corresponding to the second event. It should be noted that each target shunting UPF corresponds to a unique shunting rule.

[0087] The above solution has at least the following beneficial effects: In the embodiment of the present application, a service shunting processing method is provided. The PCF receives the first shunting rule request information including the first tracking area code TAC and the access network type of the user terminal from the large network SMF. Since the private network park can only provide private network services for the user terminals with 5G service flows within the park, the PCF can determine the target shunting UPF based on the first shunting rule request information to perform shunting processing on the services of the user terminal. Also, since the target shunting UPF includes: the UPF for shunting private network services or the UPF for shunting public network services, the PCF can determine the target shunting rule based on the type of the target shunting UPF. In this way, the PCF can instruct the large network SMF to configure the target shunting UPF based on the target shunting rule, achieving the purpose of shunting the service flow of the user terminal.

[0088] In a possible implementation, in combination with Figure 3 , as Figure 4 shown, the process of the large network SMF determining the target shunting UPF based on the first shunting rule request information can be specifically implemented through the following S401 - S402.

[0089] S401. The large network SMF obtains the second TAC to which the private network park belongs.

[0090] Among them, the private network park is used to provide private network services.

[0091] In a possible implementation, the large network SMF sends the first request information to the enterprise intranet. The first request information is used to request to obtain the second TAC to which the private network park belongs. The large network SMF receives the first request response information sent by the enterprise intranet. The first request response information includes the second TAC.

[0092] Optionally, the second TAC includes at least one target TAC information.

[0093] S402. When the second TAC includes the first TAC and the access network type of the user terminal is a 5G network, the core network SMF determines the first split UPF as the target split UPF.

[0094] In a possible implementation, when the core network SMF detects the first event, it determines the first split UPF as the target split UPF.

[0095] Optionally, before the core network SMF determines the first split UPF as the target split UPF, the core network SMF compares the first TAC with the target TAC information in the second TAC to detect whether the first TAC is the same as at least one target TAC information. When the first TAC is the same as at least one target TAC information, the core network SMF determines that the second TAC includes the first TAC; when the first TAC is not the same as any target TAC information, the core network SMF determines that the second TAC does not include the first TAC.

[0096] It should be noted that before the core network SMF determines the first split UPF as the target split UPF, the core network SMF determines the access network type of the user terminal based on the service flow information received from the terminal device.

[0097] Optionally, the access network type of the user terminal includes a non-5G network or a 5G network.

[0098] The above solution has at least the following beneficial effects: In the embodiments of the present application, the core network SMF can quickly and accurately determine the type of the target split UPF based on the relationship between the second TAC to which the first TAC private network park belongs and the access network type of the user terminal.

[0099] In a possible implementation, combined with Figure 4 , as Figure 5 shown, S303. The process of the core network SMF sending the target split rule to the target split UPF can be specifically implemented by the following S501.

[0100] S501. The core network SMF sends the first target split rule to the target split UPF.

[0101] Among them, the first target split rule is used to split the private network service.

[0102] In a possible implementation, the core network SMF sends the first target split rule to the target split UPF. The first target split rule includes the first identification information, and the first identification is used to activate the preset private network split rule in the first split UPF. The preset private network split rule is used to split the private network service.

[0103] Exemplarily, the first target traffic splitting rule is: split the traffic of services with the destination address of IP1, and the maximum bandwidth is 5M; split the traffic of services with the destination address of IP2, and the bandwidth is 10M.

[0104] In another possible implementation, the core network SMF sends a first ULCL rule to the target traffic splitting UPF; the first ULCL rule includes first identification information and dedicated data network name (DNN) information.

[0105] It should be noted that the first traffic splitting UPF stores a preset private network traffic splitting rule.

[0106] Optionally, before the core network SMF sends the first target traffic splitting rule to the first traffic splitting UPF, it sends a traffic splitting rule request message to the PCF. The traffic splitting rule request message includes a first event; it receives a traffic splitting rule response message from the PCF, and the traffic splitting rule response message includes the first target traffic splitting rule.

[0107] The above solution has at least the following beneficial effects: In the embodiment of the present application, the core network SMF sends the first target traffic splitting rule to the target traffic splitting UPF. In this way, the target traffic splitting UPF can split the private network services based on the first target traffic splitting rule.

[0108] In a possible implementation, combined with Figure 5 , as Figure 6 shown, after the core network SMF sends the target traffic splitting rule to the target traffic splitting UPF in S303, the core network SMF reconfigures the target traffic splitting rule. The process of the core network SMF reconfiguring the target traffic splitting rule can be specifically implemented through the following S601 - S603.

[0109] S601. The AMF sends second traffic splitting rule request information to the core network SMF. Correspondingly, the core network SMF receives the second traffic splitting rule request information from the AMF.

[0110] Among them, the second traffic splitting rule request information includes: the third TAC of the user terminal and the second access network type of the user terminal.

[0111] In a possible implementation, the AMF sends the second traffic splitting rule request information to the core network SMF in real time.

[0112] In another possible implementation, when the AMF receives the first information from the user terminal device, the AMF sends the second traffic splitting rule request information to the core network SMF. The first information is used to indicate that the user terminal moves out of the private network park.

[0113] S602. When the second TAC to which the private network park belongs does not include the third TAC and / or the access network type of the user terminal is a non-5G network, the large network SMF determines the second diversion UPF as the target diversion UPF.

[0114] In one possible implementation, when the second TAC to which the private network park belongs does not include the third TAC and / or the access network type of the user terminal is a non-5G network, the large network SMF determines the second diversion UPF as the target diversion UPF and notifies the park SMF to delete the N4 session.

[0115] In another possible implementation, when the large network SMF detects the second event, the large network SMF determines the second diversion UPF as the target diversion UPF, and notifies the campus SMF to delete the N4 session.

[0116] It should be explained that before the big network SMF notifies the campus SMF to delete the N4 session, the big network SMF sends the private network DNN information to the Network Repository Function (NRF). NRF determines the campus SMF based on the private network DNN information and sends the identification information of the campus SMF to the big network SMF. The big network SMF establishes a communication connection with the campus SMF based on the identification information of the campus SMF.

[0117] S603. The large network SMF sends the second target diversion rule to the second diversion UPF.

[0118] Among them, the second target diversion rule is used to divert public network services.

[0119] In one possible implementation, before the large network SMF sends the second target diversion rule to the second diversion UPF, it sends a diversion rule request message to the PCF, and the diversion rule request message includes the second event; and receives a diversion rule response message from the PCF, and the diversion rule response message includes the second target diversion rule.

[0120] It should be explained that the embodiments of the present application provide methods for redetermining the diversion UPF in two scenarios.

[0121] Scenario 1:

[0122] For example, Figure 7 As shown, the method for processing a service flow when a user terminal creates a session in a park and moves the session to outside the park includes: S701-S723.

[0123] S701. The user terminal sends a PDU session establishment request message to the AMF.

[0124] In one possible implementation, the user terminal sends a PDU session establishment request message to the AMF through the RAN.

[0125] Among them, the user terminal is within the park.

[0126] S702. The AMF forwards the PDU session establishment request message to the core network SMF.

[0127] S703. The core network SMF obtains the target traffic splitting rule.

[0128] In a possible implementation, the core network SMF sends a traffic splitting rule request message to the PCF. The traffic splitting rule request message includes a first event; and receives a traffic splitting rule response message from the PCF. The traffic splitting rule response message includes a first target traffic splitting rule.

[0129] Optionally, the first event is: the first TAC belongs to the second TAC to which the private network park belongs, and the access network type of the user terminal is a 5G network.

[0130] It should be noted that after receiving the traffic splitting rule request message sent by the core network SMF, the PCF determines the first target traffic splitting rule based on the first event in the traffic splitting rule request message. The first target traffic splitting rule includes a ULCL rule.

[0131] In another possible implementation, the core network SMF sends a first traffic splitting rule request message to the PCF. When the second TAC includes the first TAC and the access network type of the user terminal is a 5G network, the PCF sends the first target traffic splitting rule to the core network SMF.

[0132] Among them, the first traffic splitting rule request message includes: the first TAC of the user terminal and the access network type of the user terminal; the first traffic splitting rule request message is used to request a traffic splitting rule. The target traffic splitting rule includes: the first target traffic splitting rule.

[0133] S704. The core network SMF establishes a general DNN with the second traffic splitting UPF.

[0134] In a possible implementation, the core network SMF determines the first traffic splitting PUF as the target traffic splitting UPF based on the first event. The core network SMF does not install the target traffic splitting rule to the second traffic splitting UPF for the time being, allocates N9 tunnel information to the second traffic splitting UPF, and does not allocate N3 tunnel information to the second traffic splitting UPF for the time being.

[0135] S705. The core network SMF sends a session establishment response to the AMF.

[0136] S706. The AMF sends a session establishment response to the user terminal.

[0137] S707. The core network SMF establishes a session with the park SMF.

[0138] In a possible implementation, the core network SMF sends the private network DNN information in the target traffic splitting rule to the PRF, and receives response information from the PRF. The response information includes the identification information of the campus SMF. The core network SMF establishes an N4 session with the campus SMF based on the identification information of the campus SMF.

[0139] Optionally, the core network SMF sends second indication information to the campus SMF based on the identification information of the campus SMF. The second indication information is used to instruct the campus SMF to select the first traffic splitting UPF.

[0140] S708. The campus SMF selects the first traffic splitting UPF.

[0141] In a possible implementation, the campus SMF selects the first traffic splitting UPF from at least one UPF controlled by the campus SMF based on the private network DNN information.

[0142] Optionally, the campus SMF obtains the N9 tunnel information of the first traffic splitting UPF and sends the N9 tunnel information of the first traffic splitting UPF to the core network SMF.

[0143] S709. The core network SMF sends the first target traffic splitting rule to the first traffic splitting UPF.

[0144] In a possible implementation, the core network SMF obtains the N9 tunnel information of the first traffic splitting UPF, queries the instance information of the campus SMF, and obtains the N4 information of the campus SMF. The core network SMF sends the first target traffic splitting rule to the first traffic splitting UPF through the N4 interface.

[0145] Optionally, the instance information of the campus SMF includes the identification information of the UPF.

[0146] Exemplarily, the instance information of the campus SMF includes the UPF ID.

[0147] In another possible implementation, when there is no connection between the core network SMF and the first traffic splitting UPF, the core network SMF sends the first target traffic splitting rule to the campus SMF through the N16a interface; the campus SMF forwards the first target traffic splitting rule to the first traffic splitting UPF based on the N4 interface.

[0148] S710. The core network SMF updates the private network session to the campus SMF.

[0149] In a possible implementation, the core network SMF sends the N9 tunnel information of the second traffic splitting UPF to the campus SMF.

[0150] S711. The campus SMF updates the private network session.

[0151] In a possible implementation, the campus SMF sends the downlink N9 tunnel information of the second traffic splitting UPF to the first traffic splitting UPF.

[0152] S712. The core network SMF updates the uplink N9 tunnel information.

[0153] In a possible implementation, the core network SMF updates the N9 tunnel information of the first traffic splitting UPF to the second traffic splitting UPF.

[0154] S713. The core network SMF sends a session update request to the user terminal.

[0155] In a possible implementation, the core network SMF sends a session update request to the user terminal through the AMF.

[0156] Wherein, the session update request includes the N3 tunnel information of the campus SMF.

[0157] S714. When the user terminal moves outside the private network campus, the user terminal sends a handover request message to the AMF.

[0158] Optionally, the handover request message includes a second traffic splitting rule request message, and the second traffic splitting rule request message includes: the third TAC of the user terminal and the second access network type of the user terminal.

[0159] S715. The AMF forwards the handover request message to the core network SMF.

[0160] S716. The core network SMF sends a traffic splitting rule request message to the PCF.

[0161] Wherein, the traffic splitting rule request message includes: a second event; the second event is: the TAC of the user terminal does not belong to the second TAC to which the private network campus belongs, and / or, the access network type of the user terminal is a non-5G network.

[0162] S717. The PCF sends a traffic splitting rule response message to the core network SMF.

[0163] In a possible implementation, the PCF sends a traffic splitting rule response message to the core network SMF based on the second event, and the traffic splitting rule response message includes a second target traffic splitting rule.

[0164] S718. The core network SMF selects the second traffic splitting UPF as the target traffic splitting UPF.

[0165] Optionally, the core network SMF sends the second target traffic splitting rule to the second traffic splitting UPF.

[0166] It should be noted that based on the traffic splitting strategy, the SMF selects the second traffic splitting UPF as the new traffic splitting point and installs a new traffic splitting rule. At the same time, the second traffic splitting UPF can reallocate the uplink N9 tunnel information and inform the core network SMF.

[0167] S719. The core network SMF updates the private network session to the campus SMF.

[0168] S720. The campus SMF notifies the first traffic splitting UPF to update the uplink N9 tunnel information.

[0169] It should be noted that the first traffic splitting UPF can also reallocate the downlink N9 tunnel information, inform the campus SMF, and then inform the core network SMF.

[0170] S721. The core network SMF sends a handover response message to the AMF.

[0171] Among them, the handover response message includes the N3 tunnel information.

[0172] S722. The AMF sends the handover response message to the user terminal.

[0173] S723. The core network SMF instructs the first traffic splitting UPF to delete the original traffic splitting point.

[0174] Scenario 2:

[0175] Exemplarily, as Figure 8 shown, the method for the user terminal to switch from 5G session establishment to non-5G network service flow processing within the campus includes: S801 - S827.

[0176] S801. The user terminal sends a 5G session establishment request message to the AMF.

[0177] In a possible implementation, the user terminal sends a 5G session establishment request message to the AMF through the RAN.

[0178] Among them, the user terminal is within the campus.

[0179] S802. The AMF forwards the 5G session establishment request message to the core network SMF.

[0180] S803. The core network SMF obtains the target traffic splitting rule.

[0181] In a possible implementation, the core network SMF sends a traffic splitting rule request message to the PCF. The traffic splitting rule request message includes the first event; receives a traffic splitting rule response message from the PCF, and the traffic splitting rule response message includes the first target traffic splitting rule.

[0182] Optionally, the first event is that the TAC of the user terminal belongs to the second TAC to which the private network park belongs, and the access network type of the user terminal is a 5G network.

[0183] It should be noted that after receiving the shunting rule request message sent by the large network SMF, the PCF determines the first target shunting rule based on the first event in the shunting rule request message. The first target shunting rule includes the ULCL rule.

[0184] In another possible implementation, the large network SMF sends the first shunting rule request information to the PCF. When the second TAC includes the first TAC and the access network type of the user terminal is a 5G network, the PCF sends the first target shunting rule to the large network SMF.

[0185] Among them, the first shunting rule request information includes: the first TAC of the user terminal and the access network type of the user terminal; the first shunting rule request information is used to request a shunting rule. The target shunting rule includes: the first target shunting rule.

[0186] S804. The large network SMF establishes a general DNN with the second shunting UPF.

[0187] In one possible implementation, the large network SMF determines the first shunting PUF as the target shunting UPF based on the first event. The large network SMF does not install the target shunting rule on the second shunting UPF for the time being, allocates N9 tunnel information to the second shunting UPF, and does not allocate N3 tunnel information to the second shunting UPF for the time being.

[0188] S805. The large network SMF sends a 5G session establishment response to the AMF.

[0189] S806. The AMF sends a 5G session establishment response to the user terminal.

[0190] S807. The large network SMF establishes a 5G private network session with the park SMF.

[0191] In one possible implementation, the large network SMF sends the private network DNN information in the target shunting rule to the PRF, receives the response information from the PRF, and the response information includes the identification information of the park SMF; the large network SMF establishes an N4 session with the park SMF based on the identification information of the park SMF.

[0192] Optionally, the large network SMF sends the second indication information to the park SMF based on the identification information of the park SMF, and the second indication information is used to instruct the park SMF to select the first shunting UPF.

[0193] S808. The park SMF selects the first shunting UPF.

[0194] In one possible implementation, the campus SMF selects a first traffic splitting UPF from at least one UPF controlled by the campus SMF based on the private network DNN information.

[0195] Optionally, the campus SMF obtains the N9 tunnel information of the first traffic splitting UPF and sends the N9 tunnel information of the first traffic splitting UPF to the public network SMF.

[0196] S809. The public network SMF sends a first target traffic splitting rule to the first traffic splitting UPF.

[0197] In one possible implementation, the public network SMF queries the instance information of the campus SMF based on the N9 tunnel information of the first traffic splitting UPF, and obtains the N4 information of the campus SMF. The public network SMF sends a first target traffic splitting rule to the first traffic splitting UPF through the N4 interface.

[0198] Optionally, the instance information of the campus SMF includes the identification information of the UPF.

[0199] Exemplarily, the instance information of the campus SMF includes the UPF ID.

[0200] In another possible implementation, when there is no connection between the public network SMF and the first traffic splitting UPF, the public network SMF sends the first target traffic splitting rule to the campus SMF through the N16a interface; the campus SMF forwards the first target traffic splitting rule to the first traffic splitting UPF based on the N4 interface.

[0201] S810. The public network SMF updates the private network session to the campus SMF.

[0202] In one possible implementation, the public network SMF sends the N9 tunnel information of the second traffic splitting UPF to the campus SMF.

[0203] S811. The campus SMF updates the private network session.

[0204] In one possible implementation, the campus SMF sends the downlink N9 tunnel information of the second traffic splitting UPF to the first traffic splitting UPF.

[0205] S812. The public network SMF updates the uplink N9 tunnel information.

[0206] In one possible implementation, the public network SMF updates the N9 tunnel information of the first traffic splitting UPF to the second traffic splitting UPF.

[0207] S813. The public network SMF sends a session update request to the user terminal.

[0208] In one possible implementation, the public network SMF sends a session update request to the user terminal through the AMF.

[0209] Among them, the session update request includes the N3 tunnel information of the campus SMF.

[0210] S814. When the access network type of the user terminal changes, the user terminal sends a handover request message to the AMF.

[0211] Optionally, the handover request message includes a second traffic splitting rule request message, and the second traffic splitting rule request message includes: the third TAC of the user terminal and the second access network type of the user terminal.

[0212] S815. The AMF forwards the handover request message to the core network SMF.

[0213] S816. The core network SMF sends a traffic splitting rule request message to the PCF.

[0214] Among them, the traffic splitting rule request message includes: a second event; the second event is: the TAC of the user terminal does not belong to the second TAC to which the private network campus belongs, and / or the access network type of the user terminal is a non-5G network.

[0215] S817. The PCF sends a traffic splitting rule response message to the core network SMF.

[0216] In a possible implementation, the PCF sends a traffic splitting rule response message to the core network SMF based on the second event, and the traffic splitting rule response message includes a second target traffic splitting rule.

[0217] S818. The core network SMF determines the second traffic splitting UPF as the target traffic splitting UPF.

[0218] S819. The core network SMF sends a non-5G session establishment response to the AMF.

[0219] S820. The AMF sends a non-5G session establishment response to the user terminal.

[0220] S821. The user terminal sends a session update request message to the AMF.

[0221] S822. The AMF sends the session update request message to the core network SMF.

[0222] S823. The core network SMF updates the downlink S1-U tunnel to the second traffic splitting UPF.

[0223] S824. The core network SMF updates the private network session to the campus SMF.

[0224] S825. The campus SMF updates the private network session to the first traffic splitting UPF.

[0225] S826. The core network SMF sends a handover response message to the AMF.

[0226] S827. The macro network SMF instructs the first split UPF to delete the original split point.

[0227] The above solution has at least the following beneficial effects: In the embodiment of the present application, when the location of the user terminal or the access network type of the user terminal changes, the AMF can timely send a handover request to the macro network SMF, so that the macro network SMF can timely update the split point and improve the accuracy of service splitting.

[0228] In a possible implementation manner, in combination with Figure 3 , such as Figure 9 shown, the process of the macro network SMF determining the target split UPF based on the first split rule request information can be specifically implemented through the following S901-S902.

[0229] S901. The macro network SMF obtains the second TAC to which the private network park belongs.

[0230] Among them, the private network park is used to provide private network services.

[0231] In a possible implementation manner, the macro network SMF sends the first request information to the enterprise intranet. The first request information is used to request to obtain the second TAC to which the private network park belongs. The macro network SMF receives the first request response information sent by the enterprise intranet. The first request response information includes the second TAC.

[0232] Optionally, the second TAC includes at least one target TAC information.

[0233] S902. In the case where the second TAC does not include the first TAC and / or the access network type of the user terminal is a non-5G network, the macro network SMF determines the second split UPF as the target split UPF.

[0234] In a possible implementation manner, when the macro network SMF detects the second event, it determines the second split UPF as the target split UPF.

[0235] Optionally, before the macro network SMF determines the second split UPF as the target split UPF, the macro network SMF compares the first TAC with the target TAC information in the second TAC to detect whether the first TAC is the same as at least one target TAC information. When the first TAC is the same as at least one target TAC information, the macro network SMF determines that the second TAC includes the first TAC; when the first TAC is not the same as any target TAC information, the macro network SMF determines that the second TAC does not include the first TAC.

[0236] It should be noted that before the macro network SMF determines the second split UPF as the target split UPF, the macro network SMF determines the access network type of the user terminal based on the received service flow information of the terminal device.

[0237] Optionally, the access network type of the user terminal includes a non-5G network or a 5G network.

[0238] The above solution has at least the following beneficial effects: In the embodiment of the present application, the large network SMF can quickly and accurately determine the type of the target splitting UPF based on the relationship between the second TAC to which the first TAC private network park belongs and the access network type of the user terminal.

[0239] In a possible implementation, in combination with Figure 9 , such as Figure 10 shown, the process of the large network SMF sending the target splitting rule to the target splitting UPF in S303 can be specifically implemented by the following S1001.

[0240] S1001: The large network SMF sends a second target splitting rule to the target splitting UPF.

[0241] Among them, the second target splitting rule is used to split public network services.

[0242] In a possible implementation, the large network SMF sends a second target splitting rule to the second splitting UPF.

[0243] In a possible implementation, before the large network SMF sends the second target splitting rule to the second splitting UPF, the large network SMF sends a second event to the PCF to obtain the second target splitting rule.

[0244] Exemplarily, the second target splitting rule is: split the service with the destination address of IP1 and prohibit its use; split the service with the destination address of IP2 with a bandwidth of 5M.

[0245] The above solution has at least the following beneficial effects: In the embodiment of the present application, the large network SMF sends the second target splitting rule to the target splitting UPF. In this way, the target splitting UPF can split the public network services based on the second target splitting rule.

[0246] In a possible implementation, in combination with Figure 10 , such as Figure 11 shown, after the large network SMF sends the target splitting rule to the target splitting UPF in S303, the large network SMF reconfigures the target splitting rule. The process of the large network SMF reconfiguring the target splitting rule can be specifically implemented by the following S1101 - S1103.

[0247] S1101: The AMF sends a third splitting rule request message to the large network SMF. Correspondingly, the large network SMF receives the third splitting rule request message from the AMF.

[0248] The third diversion rule request information includes: the fourth TAC of the user terminal and the second access network type of the user terminal.

[0249] In one possible implementation, AMF sends the third diversion rule request information to the large network SMF in real time.

[0250] In another possible implementation, when the AMF receives the second information from the user terminal device, the AMF sends a third diversion rule request information to the large network SMF. The third information is used to characterize that the user terminal moves into the private network park.

[0251] S1102. When the second TAC includes the fourth TAC and the access network type of the user terminal is a 5G network, the large network SMF determines the first diversion UPF as the target diversion UPF.

[0252] In one possible implementation, when the second TAC includes the fourth TAC and the access network type of the user terminal is a 5G network, the large network SMF determines the first diversion UPF as the target diversion UPF and notifies the campus SMF to create an N4 session.

[0253] In another possible implementation, when the large network SMF detects the first event, the large network SMF determines the first diversion UPF as the target diversion UPF, and notifies the campus SMF to create an N4 session.

[0254] It should be explained that before the big network SMF notifies the campus SMF to create an N4 session, the big network SMF sends the private network DNN information to the NRF. The NRF determines the campus SMF based on the private network DNN information and sends the identification information of the campus SMF to the big network SMF. The big network SMF establishes a communication connection with the campus SMF based on the identification information of the campus SMF.

[0255] S1103. The large network SMF sends the first target diversion rule to the first diversion UPF.

[0256] Among them, the second target diversion rule is used to divert public network services.

[0257] In one possible implementation, before the large network SMF sends the first target diversion rule to the first diversion UPF, it sends a diversion rule request message to the PCF, and the diversion rule request message includes the second event; and receives a diversion rule response message from the PCF, and the diversion rule response message includes the first target diversion rule.

[0258] It should be explained that the embodiments of the present application provide methods for redetermining the diversion UPF in two scenarios.

[0259] Scenario 3:

[0260] For example,Figure 12 As shown, the method for processing the service flow when the user terminal creates a session within the park and moves outside the park includes: S1201 - S1222.

[0261] S1201. The user terminal sends a PDU session establishment request message to the AMF.

[0262] In a possible implementation, the user terminal sends a PDU session establishment request message to the AMF through the RAN.

[0263] Among them, the user terminal is within the park.

[0264] S1202. The AMF forwards the PDU session establishment request message to the core network SMF.

[0265] S1203. The core network SMF obtains the target traffic splitting rule.

[0266] In a possible implementation, the core network SMF sends a traffic splitting rule request message to the PCF. The traffic splitting rule request message includes a second event; it receives a traffic splitting rule response message from the PCF, and the traffic splitting rule response message includes a first target traffic splitting rule.

[0267] Optionally, the second event is: the TAC of the user terminal belongs to a second TAC that the private network park does not belong to, and / or the access network type of the user terminal is a 5G network.

[0268] It should be explained that after the PCF receives the traffic splitting rule request message sent by the core network SMF, it determines the second target traffic splitting rule based on the second event in the traffic splitting rule request message.

[0269] In another possible implementation, the core network SMF sends a first traffic splitting rule request message to the PCF. When the first TAC belongs to a second TAC that the private network park does not belong to, and / or the access network type of the user terminal is a 5G network, the PCF sends a second target traffic splitting rule to the core network SMF.

[0270] Among them, the first traffic splitting rule request message includes: the first TAC of the user terminal and the access network type of the user terminal; the first traffic splitting rule request message is used to request a traffic splitting rule. The target traffic splitting rule includes: the second target traffic splitting rule.

[0271] S1204. The core network SMF establishes a general DNN with the second traffic splitting UPF.

[0272] In a possible implementation, the core network SMF determines the second traffic splitting PUF as the target traffic splitting UPF based on the second event. The core network SMF allocates N3 tunnel information to the second traffic splitting UPF.

[0273] S1205. The core network SMF sends a session establishment response to the AMF.

[0274] S1206. The AMF sends a session establishment response to the user terminal.

[0275] S1207. The core network SMF selects the second traffic splitting UPF as the target traffic splitting UPF.

[0276] In a possible implementation, the core network SMF selects the second traffic splitting UPF as the target traffic splitting UPF from at least one UPF controlled by the core network SMF based on the public DNN.

[0277] S1208. The core network SMF establishes a session with the campus SMF.

[0278] In a possible implementation, the core network SMF sends the private network DNN information in the target traffic splitting rule to the PRF, receives the response information from the PRF, and the response information includes the identification information of the campus SMF; the core network SMF establishes an N4 session with the campus SMF based on the identification information of the campus SMF.

[0279] Optionally, the core network SMF sends the second indication information to the campus SMF based on the identification information of the campus SMF, and the second indication information is used to instruct the campus SMF to select the first traffic splitting UPF.

[0280] S1209. The campus SMF selects the first traffic splitting UPF.

[0281] In a possible implementation, the campus SMF selects the first traffic splitting UPF from at least one UPF controlled by the campus SMF based on the private network DNN information.

[0282] Optionally, the campus SMF obtains the N9 tunnel information of the first traffic splitting UPF and sends the N9 tunnel information of the first traffic splitting UPF to the core network SMF.

[0283] S1210. The core network SMF updates the downlink N9 tunnel information to the second traffic splitting UPF.

[0284] In a possible implementation, the core network SMF updates the N9 tunnel information of the first traffic splitting UPF to the second traffic splitting UPF.

[0285] S1211. When the user terminal moves outside the private network campus, the user terminal sends a handover request message to the AMF.

[0286] Optionally, the handover request message includes a third traffic splitting rule request message, and the third traffic splitting rule request message includes: the fourth TAC of the user terminal and the second access network type of the user terminal.

[0287] S1212. The AMF forwards the handover request message to the core network SMF.

[0288] S1213. The macro network SMF sends a traffic splitting rule request message to the PCF.

[0289] Among them, the traffic splitting rule request message includes: a first event; the first event is that the TAC of the user terminal belongs to the second TAC to which the private network park belongs, and the access network type of the user terminal is a 5G network.

[0290] S1214. The PCF sends a traffic splitting rule response message to the macro network SMF.

[0291] In a possible implementation, the PCF sends a traffic splitting rule response message to the macro network SMF based on the first event, and the traffic splitting rule response message includes a second target traffic splitting rule.

[0292] S1215. The macro network SMF obtains the N9 tunnel information of the second traffic splitting UPF.

[0293] S1216. The macro network SMF sends the second target traffic splitting rule to the second traffic splitting UPF.

[0294] In a possible implementation, the macro network SMF queries the instance information of the park SMF based on the N9 tunnel information of the first traffic splitting UPF, and obtains the N4 information of the park SMF. The macro network SMF sends the first target traffic splitting rule to the first traffic splitting UPF through the N4 interface.

[0295] Optionally, the instance information of the park SMF includes the identification information of the UPF.

[0296] Exemplarily, the instance information of the park SMF includes the UPF ID.

[0297] In another possible implementation, when there is no connection between the macro network SMF and the first traffic splitting UPF, the macro network SMF sends the first target traffic splitting rule to the park SMF through the N16a interface; the park SMF forwards the first target traffic splitting rule to the first traffic splitting UPF based on the N4 interface.

[0298] S1217. The macro network SMF updates the private network session to the park SMF.

[0299] In a possible implementation, the macro network SMF sends the N9 tunnel information of the second traffic splitting UPF to the park SMF.

[0300] S1218. The park SMF updates the private network session.

[0301] In a possible implementation, the park SMF sends the downlink N9 tunnel information of the second traffic splitting UPF to the first traffic splitting UPF.

[0302] It needs to be explained that the first split UPF can reallocate the uplink N9 tunnel information.

[0303] S1219, the large network SMF updates the upstream N9 tunnel information.

[0304] In one possible implementation, the large network SMF updates the N9 tunnel information of the first diversion UPF to the second diversion UPF.

[0305] S1220. The large network SMF sends a switching response message to the AMF.

[0306] The switching response information includes N3 tunnel information.

[0307] S1221. AMF sends a switching response message to the user terminal.

[0308] S1222. The large network SMF instructs the second diversion UPF to delete the original diversion point.

[0309] Scenario 4:

[0310] For example, Figure 13 As shown, the method for a user terminal to switch from 5G session creation to service flow processing of a non-5G network within a campus includes: S1301-S1324.

[0311] S1301. The user terminal sends a non-5G session establishment request message to the AMF.

[0312] In one possible implementation, the user terminal sends a non-5G session establishment request message to the AMF through the RAN.

[0313] Among them, the user terminal is located in the park.

[0314] S1302. AMF forwards the non-5G session establishment request message to the large network SMF.

[0315] S1303. The large network SMF obtains target diversion rules.

[0316] In a possible implementation, the large network SMF sends a diversion rule request message to the PCF, where the diversion rule request message includes the second event; and receives a diversion rule response message from the PCF, where the diversion rule response message includes the first target diversion rule.

[0317] Optionally, the second event is: the TAC of the user terminal belongs to a second TAC to which the private network park does not belong, and / or the access network type of the user terminal is a 5G network.

[0318] It needs to be explained that after the PCF receives the diversion rule request message sent by the large network SMF, it determines the second target diversion rule based on the second event in the diversion rule request message.

[0319] In another possible implementation, the large network SMF sends a first diversion rule request message to the PCF. When the first TAC belongs to a second TAC to which the private network park does not belong, and / or the access network type of the user terminal is a 5G network, the PCF sends a second target diversion rule to the large network SMF.

[0320] The first diversion rule request information includes: the first TAC of the user terminal and the access network type of the user terminal; the first diversion rule request information is used to request the diversion rule. The target diversion rule includes: the second target diversion rule.

[0321] S1304, the large network SMF and the second diversion UPF establish a common DNN.

[0322] In a possible implementation, the large network SMF determines the second offload PUF as the target offload UPF based on the second event, and allocates N3 tunnel information to the second offload UPF.

[0323] S1305. The large network SMF sends a non-5G session establishment response to the AMF.

[0324] S1306. AMF sends a non-5G session establishment response to the user terminal.

[0325] S1307. The large network SMF selects the second diversion UPF as the target diversion UPF.

[0326] In one possible implementation, the large network SMF selects a second diversion UPF as a target diversion UPF from at least one UPF controlled by the large network SMF based on a common DNN.

[0327] S1308, the large network SMF and the campus SMF establish a 5G private network session.

[0328] In one possible implementation, the large network SMF sends the private network DNN information in the target diversion rule to the PRF, and receives response information from the PRF, the response information includes the identification information of the campus SMF; the large network SMF establishes an N4 session with the campus SMF based on the identification information of the campus SMF.

[0329] Optionally, the large network SMF sends a second indication message to the park SMF based on the identification information of the park SMF, and the second indication message is used to instruct the park SMF to select the first diversion UPF.

[0330] S1309, the park SMF selects the first diversion UPF.

[0331] In one possible implementation, the campus SMF selects a first traffic splitting UPF from at least one UPF controlled by the campus SMF based on the private network DNN information.

[0332] Optionally, the campus SMF obtains the N9 tunnel information of the first traffic splitting UPF and sends the N9 tunnel information of the first traffic splitting UPF to the public network SMF.

[0333] S1310. The public network SMF updates the downlink N9 tunnel information to the second traffic splitting UPF.

[0334] In one possible implementation, the public network SMF updates the N9 tunnel information of the first traffic splitting UPF to the second traffic splitting UPF.

[0335] S1311. When the user terminal moves outside the private network campus, the user terminal sends a handover request message to the AMF.

[0336] Optionally, the handover request message includes a third traffic splitting rule request message, and the third traffic splitting rule request message includes: the fourth TAC of the user terminal and the second access network type of the user terminal.

[0337] S1312. The AMF forwards the handover request message to the public network SMF.

[0338] S1313. The public network SMF sends a traffic splitting rule request message to the PCF.

[0339] Among them, the traffic splitting rule request message includes: a first event; the first event is that the TAC of the user terminal belongs to the second TAC to which the private network campus belongs, and the access network type of the user terminal is a 5G network.

[0340] S1314. The PCF sends a traffic splitting rule response message to the public network SMF.

[0341] In one possible implementation, the PCF sends a traffic splitting rule response message to the public network SMF based on a second event, and the traffic splitting rule response message includes a second target traffic splitting rule.

[0342] S1315. The public network SMF obtains the N9 tunnel information of the second traffic splitting UPF.

[0343] S1316. The public network SMF sends the second target traffic splitting rule to the second traffic splitting UPF.

[0344] In one possible implementation, the public network SMF queries the instance information of the campus SMF based on the N9 tunnel information of the first traffic splitting UPF, obtains the N4 information of the campus SMF. The public network SMF sends a first target traffic splitting rule to the first traffic splitting UPF through the N4 interface.

[0345] Optionally, the instance information of the campus SMF includes identification information of the UPF.

[0346] Exemplarily, the instance information of the campus SMF includes the UPF ID.

[0347] In another possible implementation, when there is no connection between the large network SMF and the first diversion UPF, the large network SMF sends the first target diversion rule to the campus SMF through the N16a interface; the campus SMF forwards the first target diversion rule to the first diversion UPF based on the N4 interface.

[0348] S1317, the large network SMF sends a 5G session establishment response to AMF.

[0349] S1318. AMF sends a 5G session establishment response to the user terminal.

[0350] S1319. The user terminal sends a 5G session update request to AMF.

[0351] S1320. AMF sends a 5G session update request to the large network SMF.

[0352] S1321. The large network SMF updates the upstream N9 tunnel information.

[0353] In one possible implementation, the large network SMF updates the N9 tunnel information of the first diversion UPF to the second diversion UPF.

[0354] S1322. The large network SMF updates the 5G private network session to the campus SMF.

[0355] In one possible implementation, the large network SMF sends the N9 tunnel information of the second diversion UPF to the campus SMF.

[0356] S1323. The campus SMF updates the private network session.

[0357] In one possible implementation, the campus SMF sends the downlink N9 tunnel information of the second diversion UPF to the first diversion UPF.

[0358] S1324. The large network SMF instructs the second diversion UPF to delete the original diversion point.

[0359] The above scheme brings at least the following beneficial effects: In the embodiment of the present application, when the location of the user terminal or the access network type of the user terminal changes, the AMF can promptly send a switching request to the large network SMF so that the large network SMF can promptly update the diversion point and improve the accuracy of service diversion.

[0360] In one possible implementation, combining Figure 3 ,like Figure 14As shown in the figure, before the core network SMF sends the target traffic steering rule to the target traffic steering UPF in S303, the core network SMF receives the target traffic steering rule from the PCF. The process by which the core network SMF receives the target traffic steering rule from the PCF can be specifically implemented through the following S1401-S1402.

[0361] S1401. The core network SMF sends a traffic steering rule request message to the PCF.

[0362] Among them, the traffic steering rule request message includes a first event or a second event; the first event is that the TAC of the user terminal belongs to the second TAC to which the private network park belongs, and the access network type of the user terminal is a 5G network; the second event is that the TAC of the user terminal does not belong to the second TAC to which the private network park belongs, and / or the access network type of the user terminal is a non-5G network.

[0363] S1402. The core network SMF receives the target traffic steering rule from the PCF.

[0364] It should be explained that when the core network SMF receives the traffic steering rule request message, it determines whether the traffic steering rule request message is a first event or a second event. When the traffic steering rule request message is the first event, the PCF sends the first target traffic steering rule to the core network SMF; when the traffic steering rule request message is the second event, the PCF sends the second target traffic steering rule to the core network SMF.

[0365] The above solution has at least the following beneficial effects: In the embodiment of the present application, the core network SMF reports the first event or the second event to the PCF in order to obtain the target traffic steering rule.

[0366] In the embodiment of the present application, the functional modules of the service traffic steering processing device can be divided according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. Optionally, the division of modules in the embodiment of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

[0367] As Figure 15 shown, it is a schematic structural diagram of a service traffic steering processing device 150 provided by an embodiment of the present application. The service traffic steering processing device 150 includes: a communication unit 1501 and a processing unit 1502.

[0368] A communication unit 1501, configured to receive first split rule request information from an AMF; the first split rule request information includes: a first tracking area code (TAC) of a user terminal and an access network type of the user terminal; the first split rule request information is used to request a split rule; a processing unit 1502, configured to determine a target split user plane function (UPF) based on the first split rule request information; the target split UPF includes: a first split UPF or a second split UPF, the first split UPF is used to split private network services, and the second split UPF is used to split public network services; the communication unit 1501 is further configured to send a target split rule to the target split UPF; the target split rule is determined by a PCF based on the first split rule request information.

[0369] Optionally, the processing unit 1502 is configured to obtain a second TAC to which a private network park belongs; the private network park is used to provide private network services; in a case where the second TAC includes the first TAC and the access network type of the user terminal is a fifth-generation communication (5G) network, determine the first split UPF as the target split UPF.

[0370] Optionally, the communication unit 1501 is configured to send a first target split rule to the first split UPF; the first target split rule is used to split private network services.

[0371] Optionally, the communication unit 1501 is configured to receive second split rule request information from the AMF; the second split rule request information includes: a third TAC of the user terminal and a second access network type of the user terminal; the processing unit 1502 is configured to determine the second split UPF as the target split UPF in a case where the second TAC does not include the third TAC and / or the access network type of the user terminal is a fourth-generation communication non-5G network; the communication unit 1501 is configured to send a second target split rule to the second split UPF; the second target split rule is used to split public network services.

[0372] Optionally, the processing unit 1502 is configured to obtain a second TAC to which a private network park belongs; the private network park is used to provide private network services; in a case where the second TAC does not include the first TAC and / or the access network type of the user terminal is a non-5G network, determine the second split UPF as the target split UPF.

[0373] Optionally, it is configured to send a second target split rule to the second split UPF; the second target split rule is used to split public network services.

[0374] Optionally, the processing unit 1502 and the communication unit 1501 are configured to receive third traffic splitting rule request information from the AMF; the third traffic splitting rule request information includes: the fourth TAC of the user terminal and the third access network type of the user terminal; the processing unit 1502 is configured to determine the first traffic splitting UPF as the target traffic splitting UPF when the second TAC includes the fourth TAC and the access network type of the user terminal is a 5G network; the communication unit 1501 is configured to send a first target traffic splitting rule to the first traffic splitting UPF; the first target traffic splitting rule is used to split private network services.

[0375] Optionally, the communication unit 1501 is further configured to: send a traffic splitting rule request message to the PCF, where the traffic splitting rule request message includes a first event or a second event; the first event is that the TAC of the user terminal belongs to the second TAC to which the private network park belongs and the access network type of the user terminal is a 5G network; the second event is that the TAC of the user terminal does not belong to the second TAC to which the private network park belongs, and / or the access network type of the user terminal is not a 5G network; receive a target traffic splitting rule from the PCF.

[0376] Among them, the processing unit 1502 may be a processor or a controller. It may implement or execute various exemplary logic blocks, modules, and circuits described in connection with the disclosure of the present application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The communication unit may be a transceiver circuit or a communication interface, etc. The storage module may be a memory. When the processing unit 1502 is a processor, the communication unit 1501 is a communication interface, and the storage module is a memory, the service traffic splitting processing device involved in the embodiments of the present application may be Figure 2 the service traffic splitting processing device shown.

[0377] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of description, only the above division of each functional module is used as an example. In actual applications, the above functions may be allocated to different functional modules according to needs, that is, the internal structure of the network node is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the system, module, and network node described above may refer to the corresponding processes in the foregoing method embodiments and will not be repeated here.

[0378] The embodiments of the present application further provide a computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When a computer executes the instructions, the computer executes each step in the method flow shown in the above method embodiments. The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a computer program or instructions to implement the service traffic splitting processing method in the above method embodiments.

[0379] The embodiments of the present application provide a computer program product containing instructions. When the instructions run on a computer, the computer is enabled to execute the service traffic splitting processing method in the above method embodiments.

[0380] Among them, the computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the computer-readable storage medium include: an electrical connection with one or more wires, a portable computer disk, a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), registers, hard disks, optical fibers, portable compact disc read-only memory (Compact Disc Read-Only Memory, CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above, or any other form of computer-readable storage medium known in the art. An exemplary storage medium is coupled to the processor, enabling the processor to read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an Application Specific Integrated Circuit (ASIC). In the embodiments of the present invention, the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or combined with an instruction execution system, apparatus, or device.

[0381] Since the devices, equipment, computer-readable storage medium, and computer program product in the embodiments of the present invention can be applied to the above method, the technical effects that can be obtained can also refer to the above method embodiments, and the embodiments of the present application will not be elaborated here.

[0382] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A service diversion processing method, characterized in that, applied to the Session Management Function (SMF) of the core network, the method includes: Receiving first diversion rule request information from the Access and Mobility Management Function (AMF); the first diversion rule request information includes: the first Tracking Area Code (TAC) of the user terminal and the access network type of the user terminal; the first diversion rule request information is used to request a diversion rule; Based on the first diversion rule request information, determining a target diversion User Plane Function (UPF); the target diversion UPF includes: a first diversion UPF or a second diversion UPF, the first diversion UPF is used to divert private network services, and the second diversion UPF is used to divert public network services; Sending a target diversion rule to the target diversion UPF; the target diversion rule is determined by the Policy Control Function (PCF) based on the first diversion rule request information.

2. The method according to claim 1, characterized in that, The determining a target diversion User Plane Function (UPF) based on the first diversion rule request information specifically includes: Obtaining a second TAC to which the private network park belongs; the private network park is used to provide the private network service; In the case that the second TAC includes the first TAC and the access network type of the user terminal is a 5G network, determining the first diversion UPF as the target diversion UPF.

3. The method according to claim 2, characterized in that, The sending a target diversion rule to the target diversion UPF specifically includes: Sending a first target diversion rule to the first diversion UPF; the first target diversion rule is used to divert the private network service.

4. The method according to claim 3, characterized in that, After sending the first target diversion rule to the first diversion UPF, the method further includes: Receiving second diversion rule request information from the AMF; the second diversion rule request information includes: the third TAC of the user terminal and the second access network type of the user terminal; In the case that the second TAC does not include the third TAC and / or the access network type of the user terminal is a non-5G network, determining the second diversion UPF as the target diversion UPF; Sending a second target diversion rule to the second diversion UPF; the second target diversion rule is used to divert the public network service.

5. The method according to claim 1, characterized in that, The determining a target diversion UPF based on the first diversion rule request information specifically includes: Obtaining a second TAC to which the private network park belongs; the private network park is used to provide the private network service; In the case that the second TAC does not include the first TAC and / or the access network type of the user terminal is a non-5G network, determining the second diversion UPF as the target diversion UPF.

6. The method according to claim 5, characterized in that, The sending a target diversion rule to the target diversion UPF specifically includes: Sending a second target diversion rule to the second diversion UPF; the second target diversion rule is used to divert the public network service.

7. The method according to claim 6, wherein, after sending the second target traffic splitting rule to the second traffic splitting UPF, the method further includes: receiving third traffic splitting rule request information from the AMF; the third traffic splitting rule request information includes: the fourth TAC of the user terminal and the third access network type of the user terminal; when the second TAC includes the fourth TAC and the access network type of the user terminal is a 5G network, determining the first traffic splitting UPF as the target traffic splitting UPF; sending a first target traffic splitting rule to the first traffic splitting UPF; the first target traffic splitting rule is used to split the private network service.

8. The method according to any one of claims 1-7, wherein, before sending the target traffic splitting rule to the target traffic splitting UPF, the method further includes: sending a traffic splitting rule request message to the PCF, the traffic splitting rule request message includes a first event or a second event; the first event is: the TAC of the user terminal belongs to the second TAC to which the private network park belongs, and the access network type of the user terminal is a 5G network; the second event is: the TAC of the user terminal does not belong to the second TAC to which the private network park belongs, and / or, the access network type of the user terminal is a non-5G network; receiving the target traffic splitting rule from the PCF.

9. An apparatus for service traffic splitting processing, wherein, the apparatus includes: a communication unit and a processing unit; the communication unit is configured to receive first traffic splitting rule request information from a core access and mobility management function AMF; the first traffic splitting rule request information includes: the first tracking area code TAC of the user terminal and the access network type of the user terminal; the first traffic splitting rule request information is used to request a traffic splitting rule; the processing unit is configured to determine a target traffic splitting user plane function UPF based on the first traffic splitting rule request information; the target traffic splitting UPF includes: a first traffic splitting UPF or a second traffic splitting UPF, the first traffic splitting UPF is used to split private network services, and the second traffic splitting UPF is used to split public network services; the communication unit is further configured to send a target traffic splitting rule to the target traffic splitting UPF; the target traffic splitting rule is determined by a policy control function PCF based on the first traffic splitting rule request information.

10. An apparatus for service traffic splitting processing, wherein, includes: a processor and a memory; wherein, the memory is used to store computer execution instructions, when the service traffic splitting processing apparatus runs, the processor executes the computer execution instructions stored in the memory, so that the service traffic splitting processing apparatus executes the service traffic splitting processing method according to any one of claims 1-8.

11. A computer-readable storage medium, wherein, the computer-readable storage medium includes instructions, and when the instructions are executed by a service traffic splitting processing apparatus, the computer is caused to execute the service traffic splitting processing method according to any one of claims 1-8.

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