CN115396865A

CN115396865A - Terminal roaming data processing method and network equipment

Info

Publication number: CN115396865A
Application number: CN202211072520.4A
Authority: CN
Inventors: 谢涵; 王丹
Original assignee: Guangzhou Aipu Road Network Technology Co Ltd
Current assignee: Guangzhou Aipu Road Network Technology Co Ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2022-11-25
Anticipated expiration: 2042-09-02
Also published as: CN115396865B

Abstract

The invention provides a terminal roaming data processing method and network equipment, and relates to the technical field of communication. The method comprises the following steps: receiving a strategy updating notification request sent by a visited strategy control function entity V-PCF; sending a session updating request to a home session management function entity H-SMF, wherein the session updating request is used for enabling the H-SMF to acquire an updated session management policy from a home policy control function entity H-PCF according to session information; receiving a session update response sent by the H-SMF; and sending the updated session management strategy to the visited user plane function V-UPF, so that the V-UPF performs management operation on the session according to the updated session management strategy. The method and the device realize that the access place acquires the updated session management strategy of the home place, and the session can be managed on the basis of the updated session management strategy at the access place.

Description

Terminal roaming data processing method and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for processing terminal roaming data and a network device.

Background

With the popularization of 5G (5 th Generation Mobile Communication Technology, fifth Generation Mobile Communication Technology), various explosive Mobile quantity traffic increases, massive device connections, new services and application scenes are emerging continuously, and managing sessions also becomes a research hotspot.

When the terminal device is located in the service area registered and logged by the terminal device, the session of the terminal device can be managed through the management strategy on the network device near the terminal device, and the service corresponding to the management strategy is provided. Roaming means that the terminal device leaves a service area registered by itself and moves to another service area.

However, in the related art, when the terminal device is in a roaming state, the visited network device cannot manage the session of the terminal device by using the management policy of the home location.

Disclosure of Invention

The present invention aims to provide a terminal roaming data processing method and a network device, so as to solve the problem in the related art that when a terminal device is in a roaming state, a visited network device cannot manage a session of the terminal device by using a home management policy.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, an embodiment of the present invention provides a method for processing terminal roaming data, where the method is applied to a visited session management function entity V-SMF of a terminal device, and includes:

receiving a policy update notification request sent by a visited policy control function entity (V-PCF), wherein the policy update notification request comprises: session information;

sending a session update request to a home session management function (H-SMF), wherein the session update request comprises: the session information and the session updating request are used for enabling the H-SMF to acquire an updated session management policy from a home policy control function entity (H-PCF) according to the session information;

receiving a session update response sent by the H-SMF, wherein the session update response comprises: the updated session management policy;

and sending the updated session management strategy to a visited user plane function V-UPF, so that the V-UPF performs management operation on the session according to the updated session management strategy after establishing the session for the terminal equipment according to the session information.

Optionally, the V-UPF includes: an upstream data classifier entity ULCL and a visited session anchor entity V-PSA, said sending said updated policy to a visited user plane function V-UPF, comprising:

sending the updated policy to the ULCL such that the ULCL sends the updated policy to the V-PSA.

Optionally, the method further includes:

and sending the updated strategy to the visited base station V-RAN.

Optionally, the policy update notification request is: the V-PCF sends a strategy updating request to the H-PCF and receives the request sent after a strategy updating response returned by the H-PCF;

the policy update request is used to enable the H-PCF to generate the updated session management policy.

In a second aspect, an embodiment of the present invention further provides a method for processing terminal roaming data, which is applied to a home policy control function entity H-PCF of a terminal device, and includes:

responding to a request instruction of a home session management function entity H-SMF, sending an updated session management policy to the home session management function entity H-SMF so that the H-SMF sends a session update response to a visited session management function entity V-SMF, wherein the session update response comprises: the updated session management policy;

wherein, the H-SMF requests the updated session management policy to the H-PCF according to the session information in the session update request sent by the V-SMF, the session update request is sent by the V-SMF to the H-SMF after receiving the policy update notification request sent by the visited policy control function entity V-PCF, and the policy update notification request and the session update request both include: the session information;

and the V-SMF is used for sending the updated session management strategy to a visited user plane function V-UPF, so that the V-UPF establishes a session for the terminal equipment according to the session information and then manages the session according to the updated session management strategy.

Optionally, before the responding to the request instruction of the home session management function entity H-SMF and sending the updated session management policy to the home session management function entity H-SMF, the method further includes:

receiving a strategy updating request sent by the V-PCF;

generating the updated session management policy according to the policy update request;

and sending a policy update response to the V-PCF, so that the V-PCF sends the policy update notification request to the V-SMF after receiving the policy update response.

Optionally, the generating the updated session management policy according to the policy update request includes:

and generating the updated session management strategy according to the service quality parameters and the service quality monitoring information in the strategy updating request.

In a third aspect, an embodiment of the present invention further provides a method for processing terminal roaming data, which is applied to a visited user plane function V-UPF of a terminal device, and includes:

receiving an updated session management policy sent by a visited session management function entity V-SMF, wherein the updated session management policy is obtained by the V-SMF by adopting any one of the first aspects;

dividing the session flow of the terminal equipment into a first session flow and a second session flow by adopting the updated session management strategy;

sending the first session flow to an edge server, so that the first session flow is provided with a low-latency service through the edge server;

sending the second session flow to a home data network, H-DN, to enable session communication between the H-DN and the terminal device.

Optionally, the method further includes:

and adding a first time and a second time to a data packet in the session flow according to the updated session management policy, wherein the first time is used for indicating the time when the V-UPF receives the data packet, and the second time is used for indicating the time when the V-UPF sends the data packet.

In a fourth aspect, an embodiment of the present invention further provides a network device, where the network device includes: a transmitter, a receiver and a processor, wherein the transmitter and the receiver are connected to the processor, and the processor is configured to cooperate with the transmitter and the receiver to perform the method according to any one of the first, second and third aspects.

In a fifth aspect, an embodiment of the present invention provides a terminal roaming data processing apparatus, which is applied to a visited session management function entity V-SMF of a terminal device, and includes:

a first receiving module, configured to receive a policy update notification request sent by a visited policy control function entity V-PCF, where the policy update notification request includes: session information;

a first sending module, configured to send a session update request to a home session management function entity H-SMF, where the session update request includes: the session information and the session updating request are used for enabling the H-SMF to acquire an updated session management policy from a home policy control function entity (H-PCF) according to the session information;

a second receiving module, configured to receive a session update response sent by the H-SMF, where the session update response includes: the updated session management policy;

and the second sending module is used for sending the updated session management strategy to a visited user plane function V-UPF, so that the V-UPF establishes a session for the terminal equipment according to the session information and then manages the session according to the updated session management strategy.

Optionally, the V-UPF includes: an uplink data classifier entity ULCL and a visited session anchor entity V-PSA; the second sending module is specifically configured to send the updated policy to the ULCL, so that the ULCL sends the updated policy to the V-PSA.

Optionally, the apparatus further comprises:

and a third sending module, configured to send the updated policy to a visited base station V-RAN.

In a sixth aspect, an embodiment of the present invention further provides a terminal roaming data processing apparatus, which is applied to a home policy control function entity H-PCF of a terminal device, and includes:

a sending module, configured to send, in response to a request instruction of a home session management function entity H-SMF, an updated session management policy to the home session management function entity H-SMF, so that the H-SMF sends a session update response to a visited session management function entity V-SMF, where the session update response includes: the updated session management policy;

Optionally, the apparatus further comprises:

a receiving module, configured to receive a policy update request sent by the V-PCF;

a generating module, configured to generate the updated session management policy according to the policy update request;

a first sending module, configured to send a policy update response to the V-PCF, so that after receiving the policy update response, the V-PCF sends the policy update notification request to the V-SMF.

Optionally, the generating module is specifically configured to generate the updated session management policy according to the quality of service parameter and the quality of service monitoring information in the policy update request.

In a seventh aspect, an embodiment of the present invention further provides a terminal roaming data processing apparatus, which is applied to a visited user plane function V-UPF of a terminal device, and includes:

a receiving module, configured to receive an updated session management policy sent by a visited session management function entity V-SMF, where the updated session management policy is an updated policy obtained by the V-SMF using any one of the foregoing first aspects;

a dividing module, configured to divide a session flow of a terminal device into a first session flow and a second session flow by using the updated session management policy;

a sending module, configured to send the first session stream to an edge server, so that the edge server provides a low-latency service for the first session stream; and sending the second session flow to a home data network (H-DN) so that the H-DN and the terminal equipment carry out session communication.

Optionally, the apparatus further comprises:

and the adding module is used for adding a first time and a second time to the data packet in the session flow according to the updated session management strategy, wherein the first time is used for indicating the time when the V-UPF receives the data packet, and the second time is used for indicating the time when the V-UPF sends the data packet.

In an eighth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where the storage medium stores a computer program, and when the computer program is read and executed, the computer program implements the method described in any one of the first, second, and third aspects.

The invention has the beneficial effects that: the embodiment of the application provides a method for processing terminal roaming data, which is applied to a visited session management function entity V-SMF of terminal equipment and comprises the following steps: receiving a policy update notification request sent by a visited policy control function entity V-PCF, wherein the policy update notification request comprises: session information; sending a session update request to a home session management function (H-SMF), wherein the session update request comprises: the session updating request is used for enabling the H-SMF to obtain an updated session management strategy from a home policy control function entity (H-PCF) according to the session information; receiving a session update response sent by the H-SMF, wherein the session update response comprises: an updated session management policy; and sending the updated session management strategy to the visited user plane function V-UPF, so that the V-UPF performs management operation on the session according to the updated session management strategy after establishing the session for the terminal equipment according to the session information. The updated session management policy is acquired by the V-SMF from the H-PCF through the H-SMF, so that the fact that the visited place acquires the updated session management policy of the home place is achieved, and after the terminal equipment establishes the session, the visited place can manage the session based on the updated session management policy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a method for processing roaming data of a terminal according to an embodiment of the present disclosure;

fig. 3 is a flowchart illustrating a method for processing roaming data of a terminal according to an embodiment of the present disclosure;

fig. 4 is an interaction flow diagram of a method for processing roaming data of a terminal according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating a method for processing roaming data of a terminal according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a terminal roaming data processing apparatus according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a terminal roaming data processing apparatus according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that if the terms "upper", "lower", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the application is used, the description is only for convenience of describing the application and simplifying the description, but the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, and thus, cannot be understood as the limitation of the application.

Furthermore, the terms "first," "second," and the like in the description and in the claims, as well as in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

In the related art, when the terminal device is located in a service area registered and logged by the terminal device, a session of the terminal device may be managed by a management policy on a network device in the vicinity of the terminal device, and a service corresponding to the management policy is provided. Roaming means that the terminal device leaves a service area where it registers for registration and moves to another service area. However, in the related art, when the terminal device is in a roaming state, the visited network device cannot manage the session of the terminal device by using the management policy of the home location.

In view of the above technical problems in the related art, an embodiment of the present application provides a method for processing terminal roaming data, where a session update response sent by an H-SMF is received by a V-SMF, and an updated session management policy is sent to a V-UPF, so that the V-UPF performs a management operation on a session according to the updated session management policy, where the updated session management policy is obtained by the V-SMF from the H-PCF through the H-SMF, so that an access location obtains the updated session management policy of an attribution, and after a terminal device establishes the session, the access location can perform a management operation on the session based on the updated session management policy.

The mobile communication network applied in the technical solution of the present application is mainly various 5G communication networks, and certainly may also be applied to a new radio access technology (NR) in the future, which is not limited in the present application. Referring to fig. 1, a schematic diagram of a network architecture is shown in fig. 1, where the network architecture of the 5G communication network in the present application may specifically include the following network elements:

1. terminal Equipment (User Equipment, UE): and may also be referred to as user equipment, a terminal, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or user equipment.

2. Session Management Function (SMF) entity: the SM (session management) message termination point is mainly used for NAS (Non-Access Stratum) messages, and is used for establishing, modifying and releasing a session (session); user equipment IP allocation management, selection and control of UPF for a session, charging data collection and support of charging interfaces, downstream data indication, etc.

3. User Plane Function (UPF) entity: i.e. a data plane gateway. Can be used for packet routing and forwarding, or quality of service (QoS) processing of user plane data, etc.

4. Access and mobility management function (AMF) entity: the present invention is mainly used for mobility management, access management, and the like, and may be used to implement other functions, such as functions of lawful interception, or access authorization (or authentication), and the like, in addition to session management in Mobility Management Entity (MME) functions.

5. Policy Control Function (PCF) entity: and a unified policy framework is supported to manage network behaviors, policy rules are provided for a network entity to implement execution, and subscription information of a unified data warehouse is accessed.

6. Uplink Classifier (ULCL) entity: the UPF supports the function of transferring and shunting according to the flow matching rule provided by the SMF.

7. Edge Application Server (Edge Application Server, EAS)

9. Data Network (DN): such as operator services, the internet or third party service data networks.

8. Session Anchor (PDU Session Anchor, PDU) PSA entity: a PDU (Protocol Data Unit) session anchor point refers to a UPF that has a DN exit.

10. A Radio Access Network (RAN) entity: also known as base stations, i.e., networks.

It should be understood that the network architecture applied to the embodiments of the present application is only an exemplary network architecture described in terms of a conventional point-to-point architecture and a service architecture, and the network architecture to which the embodiments of the present application are applied is not limited thereto, and any network architecture capable of implementing the functions of the network elements described above is applicable to the embodiments of the present application. It should be understood that the above network elements may communicate with each other through a preset interface, which is not described herein again. It should also be understood that SMF entity, UPF entity, AMF entity, PCF entity, ULCL entity, PSA entity, RAN entity can be understood as network elements for implementing different functions, e.g. can be combined into network slices as required. The core network elements may be independent devices, or may be integrated in the same device to implement different functions, which is not limited in this application.

In the embodiment of the present application, a Visited Public Land Mobile Network (VPLMN) may be referred to as "V" for short, and a Home Public Land Mobile Network (HPLMN) may be referred to as "H" for short.

Wherein, the V-UPF is a visiting place user plane functional entity, and the H-UPF is a home place user plane functional entity; V-SMF is a visited session management function entity, and H-SMF is a home session management function entity; the V-PCF is a visited place strategy control functional entity, and the H-PCF is a home place strategy control functional entity; the V-AMF is a visiting place access and mobile management function entity, and the V-ULCL is a visiting place uplink data classifier entity.

The embodiment of the present application provides a method for processing terminal roaming data, which is applied to a visited session management function entity V-SMF of a terminal device, and the following explains the method for processing terminal roaming data provided in the embodiment of the present application.

Fig. 2 is a flowchart illustrating a method for processing roaming data of a terminal according to an embodiment of the present disclosure, where as shown in fig. 2, the method may include:

s201, receiving a strategy updating notification request sent by a visited strategy control function entity V-PCF.

Wherein, the strategy updating notification request comprises: and (4) session information.

It should be noted that after the V-PCF determines the policy update in the H-PCF, the V-PCF may send a policy update notification request to the V-SMF, and the V-SMF may receive the policy update notification request.

S202, sending a session update request to a home session management function entity H-SMF.

Wherein, the session update request includes: and the session updating request is used for enabling the H-SMF to acquire the updated session management policy from the home policy control function entity H-PCF according to the session information.

And S203, receiving a session update response sent by the H-SMF.

Wherein the session update response comprises: an updated session management policy.

In some embodiments, the V-SMF may send a session update request to the H-SMF, the H-SMF receives the session update request, the H-SMF performs session management policy association update with the H-PCF, the H-SMF acquires the updated session management policy from the H-PCF according to the session information, the H-SMF may send a session update response to the V-SMF, and the V-SMF may receive the session update response.

In addition, after the process of S203 is executed, the V-SMF may acquire the updated session management policy.

S204, sending the updated session management strategy to the visited user plane function V-UPF, so that the V-UPF performs management operation on the session according to the updated session management strategy after establishing the session for the terminal equipment according to the session information.

In some embodiments, the V-SMF sends an updated session management policy to the V-UPF, the V-UPF receives the updated session management policy, the V-SMF may initiate an N4 session modification to the V-UPF based on the updated session management policy, the V-UPF may identify an N4 session context that needs to be modified, and update parameters of the N4 session context based on a parameter list in the updated session management policy.

It should be noted that N4 is a communication interface between the V-SMF and the V-UPF.

In addition, after S204, the V-SMF may send a policy update complete message to the V-PCF, which may receive the policy update complete message.

To sum up, an embodiment of the present application provides a method for processing terminal roaming data, which is applied to a visited session management function entity V-SMF of a terminal device, and includes: receiving a policy update notification request sent by a visited policy control function entity V-PCF, wherein the policy update notification request comprises: session information; sending a session update request to a home session management function (H-SMF), wherein the session update request comprises: the session updating request is used for enabling the H-SMF to obtain an updated session management strategy from a home policy control function entity (H-PCF) according to the session information; receiving a session update response sent by the H-SMF, wherein the session update response comprises: an updated session management policy; and sending the updated session management strategy to the visited user plane function V-UPF, so that the V-UPF performs management operation on the session according to the updated session management strategy after establishing the session for the terminal equipment according to the session information. The updated session management policy is acquired by the V-SMF from the H-PCF through the H-SMF, so that the fact that the visited place acquires the updated session management policy of the home place is achieved, and after the terminal equipment establishes the session, the visited place can manage the session based on the updated session management policy.

Optionally, as shown in fig. 1, the V-UPF includes: an upstream data classifier entity ULCL and a visited session anchor entity V-PSA.

The process of sending the updated policy to the visited user plane function V-UPF in S204 may include:

the updated policy is sent to the ULCL such that the ULCL sends the updated policy to the V-PSA.

In some embodiments, the V-SMF may send the updated policy to the ULCL, which receives the updated policy; the ULCL may also send the updated policy to the V-PSA, which receives the updated policy. Updated strategies may be deployed on both ULCL and V-PSA.

It should be noted that V-SMF may initiate N4 session modification to the ULCL and V-PSA according to the updated session management policy, the ULCL and V-PSA may identify the N4 session context that needs to be modified, and update the parameters of the N4 session context according to the parameter list in the updated session management policy.

Optionally, the method further includes:

and sending the updated strategy to the visited base station V-RAN.

In the application embodiment, the V-SMF may send the updated policy to the V-AMF, the V-AMF may receive the updated policy, the V-AMF may also send the updated policy to the V-RAN, and the V-RAN may receive the updated policy.

Wherein, the updated policy can be deployed on the V-RAN.

wherein the policy update request is used for enabling the H-PCF to generate an updated session management policy.

In some embodiments, the V-PCF may send a policy update request to the H-PCF, the H-PCF may receive the policy update request, the H-PCF may generate an updated session management policy according to the policy update request and send a policy update response to the V-PCF, the V-PCF receives the policy update response and sends a policy update notification request to the V-SMF, and the V-SMF may perform the processes of S201 to S204 described above.

In the embodiment of the application, EAS can send a Policy update request to V-PCF, the V-PCF receives the Policy update request, compares the Policy update request with QoS constraints provided by VPLMN, if the Policy update request of EAS can be satisfied, the Policy update request is forwarded to H-PCF, and the H-PCF is requested to update PCC (Policy Control and Charging) rules; otherwise, the V-PCF returns a request failure response.

Wherein, the policy update request may include: qoS (Quality of Service) parameters and QoS monitoring information.

In practical application, the terminal device may be a UE terminal of a URLLC (Ultra Reliable & Low Latency Communication, ultra Reliable and Ultra Low Latency Communication) service such as an internet connected automobile, an unmanned aerial vehicle, and the like, and when a VPLMN provides a service for the mobile HPLMN outside a service area thereof, the URLLC service cannot be guaranteed in the prior art. In order to ensure the URLLC service, the EAS may send a policy update request to the V-PCF, and then execute the method for processing terminal roaming data provided in the embodiment of the present application, so as to ensure the URLLC service when the VPLMN provides service to the VPLMN.

It should be noted that, edge computing enables an operator and a third-party service to migrate a computing task to a network edge server near the UE and sink computing power to an edge computing node, thereby reducing congestion on a core network, reducing time delay and load of end-to-end transmission on a transmission network, saving network bandwidth resources, achieving low time delay and high bandwidth, further improving data processing efficiency in the world of everything interconnection, quickly responding to a user request, improving service quality, and improving user experience.

The embodiment of the present application provides a method for processing terminal roaming data, which is applied to a home policy control function entity H-PCF of a terminal device, and the following explains the method for processing terminal roaming data provided in the embodiment of the present application.

And responding to the request instruction of the home session management function entity H-SMF, and sending the updated session management policy to the home session management function entity H-SMF so that the H-SMF sends a session update response to the visited session management function entity V-SMF, wherein the session update response comprises: an updated session management policy;

the H-SMF requests an updated session management policy to the H-PCF according to session information in a session update request sent by the V-SMF, wherein the session update request is sent to the H-SMF by the V-SMF after receiving a policy update notification request sent by a visited policy control function entity V-PCF, and the policy update notification request and the session update request both comprise: session information;

and the V-SMF is used for sending the updated session management strategy to the visited user plane function V-UPF, so that the V-UPF establishes a session for the terminal equipment according to the session information and then manages the session according to the updated session management strategy.

In some embodiments, after the V-PCF determines that the policy in the H-PCF is updated, the V-PCF may send a policy update notification request to the V-SMF, and the V-SMF receives the policy update notification request and sends a session update request to the H-SMF; H-SMF receives a session update request, H-PCF responds to a request instruction of H-SMF and sends an updated session management strategy to H-SMF, the H-SMF and H-PCF realize session management strategy association update, H-SMF acquires the updated session management strategy from H-PCF according to session information, H-SMF can send a session update response to V-SMF, and V-SMF can receive the session update response.

In addition, the V-SMF sends an updated session management strategy to the V-UPF, the V-UPF receives the updated session management strategy, the V-SMF can initiate N4 session modification to the V-UPF according to the updated session management strategy, the V-UPF can identify the N4 session context needing to be modified, and the parameters of the N4 session context are updated according to a parameter list in the updated session management strategy; the V-SMF may send a policy update complete message to the V-PCF, which may receive the policy update complete message. Wherein N4 is a communication interface between the V-SMF and the V-UPF.

In the embodiment of the application, the V-UPF comprises: an upstream data classifier entity ULCL and a visitor session anchor entity V-PSA; updated strategies may be deployed on both ULCL and V-PSA. V-SMF may initiate N4 session modification to ULCL and V-PSA according to the updated session management policy, ULCL and V-PSA may identify N4 session context that needs to be modified, and update parameters of N4 session context according to the parameter list in the updated session management policy.

In addition, the V-SMF can also send the updated strategy to the visited base station V-RAN through the V-AMF.

Optionally, fig. 3 is a flowchart illustrating a method for processing roaming data of a terminal according to an embodiment of the present application, where as shown in fig. 3, before the process of sending an updated session management policy to an H-SMF in response to a request instruction of the H-SMF, the method may include:

s301, receiving a strategy updating request sent by the V-PCF.

S302, generating an updated session management strategy according to the strategy updating request.

S303, sending a strategy updating response to the V-PCF, so that the V-PCF sends a strategy updating notification request to the V-SMF after receiving the strategy updating response.

In some embodiments, the EAS may send a policy update request to the V-PCF, the V-PCF may receive the policy update request and compare the policy update request with constraints provided by the VPLMN, if the policy update request of the EAS is satisfied, the V-PCF may send the policy update request to the H-PCF, the H-PCF may receive the policy update request, the H-PCF may generate an updated session management policy according to the policy update request and send a policy update response to the V-PCF, after receiving the policy update response, sends a policy update notification request to the V-SMF, and the V-SMF receives the policy update notification request.

Optionally, the process of generating the updated session management policy according to the policy update request in S302 above may include:

and generating an updated session management strategy according to the service quality parameters and the service quality monitoring information in the strategy updating request.

The QoS parameter may be a QoS parameter, and the QoS detection information may be QoS monitoring information.

In practical application, the terminal device may be a UE terminal for URLLC (Ultra Reliable & Low Latency Communication, ultra Reliable and Ultra Low Latency Communication) services such as internet connected vehicles, unmanned aerial vehicles, etc., and when a VPLMN provides services for the mobile HPLMN outside its service area, the prior art cannot guarantee the URLLC services. In order to ensure the URLLC service, the EAS may send a policy update request to the V-PCF, and then execute the method for processing terminal roaming data provided in the embodiment of the present application, so as to ensure the URLLC service when the VPLMN provides service to the VPLMN.

Optionally, fig. 4 is an interaction flow diagram of a method for processing roaming data of a terminal according to an embodiment of the present application, and as shown in fig. 4, the method may include:

s401, the EAS sends a strategy updating request to the V-PCF.

S402, the V-PCF compares the strategy updating request with the constraint provided by the VPLMN;

s403, if the constraint meets the policy updating request, the V-PCF sends the policy updating request to the H-PCF;

s404, the H-PCF generates an updated session management strategy according to the service quality parameters and the service quality monitoring information in the strategy updating request;

s405, the H-PCF sends a strategy updating response to the V-PCF;

s406, the V-PCF sends a strategy updating notification request to the V-SMF;

s407, the V-SMF sends a session updating request to the H-SMF;

s408, updating the session management strategy association between the H-SMF and the H-PCF;

s409, the H-SMF sends a session update response to the V-SMF;

s410, the V-SMF sends a strategy updating completion message to the V-PCF;

s411, the V-PCF sends a strategy updating completion message to the EAS.

Optionally, fig. 5 is a schematic flowchart of a method for processing roaming data of a terminal according to an embodiment of the present application, as shown in fig. 5, the method is applied to a visitor plane function V-UPF of a terminal device, and the method may include:

s501, receiving the updated session management strategy sent by the visited session management function entity V-SMF.

Wherein the updated session management policy is an updated policy obtained by the V-SMF by using any one of the foregoing fig. 2 to 4.

S502, dividing the session flow of the terminal equipment into a first session flow and a second session flow by adopting the updated session management strategy.

In some embodiments, the V-UPF receives an updated session management policy sent by the V-SMF, wherein the V-UPF comprises: ULCL and V-PSA; updated session management policies are deployed on both the ULCL and the V-PSA; the ULCL is employed to divide a session flow of a terminal device into a first session flow and a second session flow.

S503, the first session stream is sent to the edge server, so that the edge server provides a low-delay service for the first session stream.

The ULCL sends a first session flow to the edge server through the V-PSA, and the edge server sinks the computing capacity to an edge computing node, so that the congestion on a core network is reduced, the end-to-end transmission delay and load on a transmission network are reduced, the network bandwidth resource is saved, and the low-delay service is provided for the first session flow through the edge server with low delay and high bandwidth.

And S504, sending a second session flow to the home data network H-DN so that the H-DN and the terminal equipment carry out session communication.

In an embodiment of the application, the ULCL sends a second session flow to the home data network H-DN through the H-UPF, and session communication is performed between the H-DN and the terminal device.

To sum up, an embodiment of the present application provides a method for processing roaming data of a terminal, including: receiving an updated session management strategy sent by a visited session management function entity V-SMF; dividing the session flow of the terminal equipment into a first session flow and a second session flow by adopting the updated session management strategy; sending the first session stream to the edge server, so that the first session stream is provided with a low-latency service through the edge server; and sending the second session flow to the home data network H-DN so that the H-DN and the terminal equipment carry out session communication. The updated session management policy is acquired by the V-SMF from the H-PCF through the H-SMF, so that the fact that the visited place acquires the updated session management policy of the home place is achieved, and after the terminal equipment establishes the session, the visited place can manage the session based on the updated session management policy.

Optionally, the method may further include:

and adding the first time and the second time to the data packet in the session flow according to the updated session management policy.

The first time is used for indicating the time when the V-UPF receives the data packet, and the second time is used for indicating the time when the V-UPF sends the data packet.

In some embodiments, when the V-PSA is sending DL packets (downlink packets), QFI (QoS Flow Identifier), QMP (QoS Monitoring Packet) indication and time t1 are encapsulated in a GTP-U (User Plane Part of GTP, GPRS User Plane Part) header; when receiving a DL data packet sent by the V-PSA, the ULCL records the time t2 of receiving the DL data packet in a GTP-U header, and when forwarding the DL data packet to the RAN, the ULCL adds the forwarding time t3 to the GTP-U header; when receiving the DL data packet forwarded via the UC CL, the RAN records the time t4 of receiving the DL data packet in the GTP-U header.

In other embodiments, when receiving the UL (uplink packet) packet of QFI from the UE, or when the RAN sends a dummy UL packet as a monitoring response, i.e., there is no UL packet for UL packet delay monitoring, the RAN encapsulates QMP, t1, t2, t3, t4 and time t5 of sending the UL packet in a GTP-U header; when the UL data packet sent by the RAN is received by the ULCL, the receiving time t6 is recorded in a GTP-U header, and when the UL data packet is forwarded to the V-PSA through the UL CL, the forwarding time t7 is added into the GTP-U header; the V-PSA adds time t8 at the time of reception to the GTP-U header when receiving the UL packet shunted via the UL CL.

The monitored information is as follows:

in summary, the updated session management policy is obtained by the V-SMF from the H-PCF through the H-SMF, so that the updated session management policy that the visited place obtains the home location is realized, and after the terminal device establishes the session, the visited place can perform a management operation on the session based on the updated session management policy.

The following describes a terminal roaming data processing apparatus, a network device, and a storage medium for executing the terminal roaming data processing method provided in the present application, and for specific implementation processes and technical effects thereof, reference is made to the relevant contents of the terminal roaming data processing method, which are not described in detail below.

Fig. 6 is a schematic structural diagram of a terminal roaming data processing apparatus according to an embodiment of the present application, and as shown in fig. 6, the apparatus may include:

a first receiving module 701, configured to receive a policy update notification request sent by a visited policy control function entity V-PCF, where the policy update notification request includes: session information;

a first sending module 702, configured to send a session update request to a home session management function entity, H-SMF, where the session update request includes: the session information and the session updating request are used for enabling the H-SMF to acquire an updated session management policy from a home policy control function entity (H-PCF) according to the session information;

a second receiving module 703, configured to receive a session update response sent by the H-SMF, where the session update response includes: the updated session management policy;

a second sending module 704, configured to send the updated session management policy to a visited user plane function V-UPF, so that after the V-UPF establishes a session for the terminal device according to the session information, the V-UPF performs a management operation on the session according to the updated session management policy.

Optionally, the V-UPF includes: an upstream data classifier entity ULCL and a visitor session anchor entity V-PSA; the second sending module is specifically configured to send the updated policy to the ULCL, so that the ULCL sends the updated policy to the V-PSA.

Optionally, the apparatus further comprises:

The embodiment of the invention also provides a terminal roaming data processing device, which is applied to the home policy control function entity H-PCF of the terminal equipment, and comprises the following components:

Optionally, the apparatus further comprises:

Optionally, fig. 7 is a schematic structural diagram of a terminal roaming data processing apparatus provided in an embodiment of the present application, and as shown in fig. 7, a visitor plane function V-UPF applied to a terminal device includes:

a receiving module 801, configured to receive an updated session management policy sent by a visited session management function entity V-SMF, where the updated session management policy is an updated policy obtained by the V-SMF by using any of the foregoing first aspects;

a dividing module 802, configured to divide the session stream of the terminal device into a first session stream and a second session stream by using the updated session management policy;

a sending module 803, configured to send the first session stream to an edge server, so that the edge server provides a low-latency service for the first session stream; sending the second session flow to a home data network, H-DN, to enable session communication between the H-DN and the terminal device.

Optionally, the apparatus further comprises:

The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.

These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. As another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application, where the network device includes: a transmitter 901, a receiver 902 and a processor 903, wherein the transmitter 901 and the receiver 902 are connected to the processor 903, and the processor 903 is used for cooperating with the transmitter 901 and the receiver 902 to execute the method.

Optionally, the invention also provides a program product, for example a computer-readable storage medium, comprising a program which, when being executed by a processor, is adapted to carry out the above-mentioned method embodiments.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (in english: processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A terminal roaming data processing method is characterized in that a visited session management function entity V-SMF applied to a terminal device comprises the following steps:

receiving a policy update notification request sent by a visited policy control function entity V-PCF, wherein the policy update notification request comprises: session information;

sending a session update request to a home session management function entity H-SMF, wherein the session update request comprises: the session information and the session updating request are used for enabling the H-SMF to obtain an updated session management policy from a home policy control function entity (H-PCF) according to the session information;

2. The method of claim 1, wherein the V-UPF comprises: an upstream data classifier entity ULCL and a visited session anchor entity V-PSA, said sending said updated policy to a visited user plane function V-UPF comprising:

3. The method of claim 2, further comprising:

and sending the updated strategy to the visited base station V-RAN.

4. The method of claim 1, wherein the policy update notification request is: the V-PCF sends a strategy updating request to the H-PCF and receives the request sent after a strategy updating response returned by the H-PCF;

5. A terminal roaming data processing method is characterized in that a home policy control function entity H-PCF applied to a terminal device comprises the following steps:

6. The method of claim 5, wherein before sending the updated session management policy to the home session management function entity H-SMF in response to the home session management function entity H-SMF request command, the method further comprises:

receiving a strategy updating request sent by the V-PCF;

and sending a strategy updating response to the V-PCF, so that the V-PCF sends the strategy updating notification request to the V-SMF after receiving the strategy updating response.

7. The method of claim 6, wherein generating the updated session management policy according to the policy update request comprises:

8. A terminal roaming data processing method is characterized in that a visited user plane function V-UPF applied to a terminal device comprises the following steps:

receiving an updated session management policy sent by a visited session management function entity (V-SMF), wherein the updated session management policy is obtained by the V-SMF by adopting any one of the claims 1 to 4;

and sending the second session flow to a home data network (H-DN) so that the H-DN and the terminal equipment carry out session communication.

9. The method of claim 8, further comprising:

10. A network device, characterized in that the network device comprises: a transmitter, a receiver, and a processor, the transmitter and the receiver each being connected to the processor, the processor being configured to cooperate with the transmitter and the receiver to perform the method of any of the preceding claims 1-9.