CN115396865B

CN115396865B - Terminal roaming data processing method and network equipment

Info

Publication number: CN115396865B
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: 2023-06-16
Anticipated expiration: 2042-09-02
Also published as: CN115396865A

Abstract

The invention provides a terminal roaming data processing method and network equipment, and relates to the technical field of communication. Comprising the following steps: receiving a policy update notification request sent by a visiting place policy control function entity V-PCF; transmitting a session update request to a home session management function entity H-SMF, wherein the session update 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 policy to the visiting place user plane function V-UPF so that the V-UPF can manage the session according to the updated session management policy. The updated session management policy of the home location is obtained at the access location, and the session can be managed and operated at the access location based on the updated session management policy.

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 terminal roaming data processing method and a network device.

Background

With the popularization of 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology) technology, various explosive mobile quantity flows are increased, mass equipment connection, new services and application scenes are continuously emerging, and session management is also a research hot spot.

When the terminal equipment is positioned in the service area which is registered and logged in by the terminal equipment, the session of the terminal equipment can be managed through the management strategy on the network equipment nearby the terminal equipment, and the service corresponding to the management strategy is provided. Roaming means that the terminal device leaves the service area where it registered to log in 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 use a home management policy to manage the session of the terminal device.

Disclosure of Invention

The invention aims to provide a terminal roaming data processing method and network equipment aiming at the defects in the prior art, so as to solve the problem that the visiting network equipment cannot adopt a home location management strategy to manage the session of the terminal equipment when the terminal equipment is in a roaming state in the related art.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the invention is as follows:

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

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;

Transmitting a session update request to a home session management function entity (H-SMF), wherein the session update request comprises: the session information, the session update request is used for enabling the H-SMF to obtain updated session management policies 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 policy to the visiting place user plane function V-UPF, so that the V-UPF establishes a session for the terminal equipment according to the session information, and then carries out 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 visited session anchor entity V-PSA, said sending said updated policy to a visited user plane function V-UPF, comprising:

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

Optionally, the method further comprises:

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

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

the policy update request is for causing 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 roaming data of a terminal, which is applied to a home policy control function entity H-PCF of a terminal device, including:

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 visiting session management function entity (V-SMF), wherein the session update response comprises: the updated session management policy;

the method comprises the steps that the H-SMF requests the updated session management policy to the H-PCF according to session information in a session update request sent by the V-SMF, the session update request is sent to the H-SMF after receiving a policy update notification request sent by a visiting policy control function entity V-PCF, and the policy update notification request and the session update request comprise: the session information;

The V-SMF is used for sending the updated session management policy to the visiting place user plane function V-UPF so that the V-UPF can manage the session according to the updated session management policy after establishing the session for the terminal equipment according to the session information.

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 policy update request sent by the V-PCF;

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

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

Receiving an updated session management policy sent by a visiting place 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 above first aspects;

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

transmitting the first session stream to an edge server such that low latency services are provided to the first session stream by the edge server;

and sending the second session stream to a home data network H-DN so that the H-DN and the terminal equipment perform session communication.

Optionally, the method further comprises:

and adding a first time and a second time for the data packet in the session stream according to the updated session management strategy, wherein the first time is used for indicating the time when the data packet is received by the V-UPF, and the second time is used for indicating the time when the data packet is sent by the V-UPF.

In a fourth aspect, an embodiment of the present invention further provides a network device, where the network device includes: the method comprises the steps of a transmitter, a receiver and a processor, wherein the transmitter and the receiver are connected with the processor, and the processor is used for executing the method in any one of the first aspect, the second aspect and the third aspect in cooperation with the transmitter and the receiver.

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, including:

the first receiving module is 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, the session update request is used for enabling the H-SMF to obtain updated session management policies from a home policy control function entity H-PCF according to the session information;

the second receiving module is 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 policy to the visiting place user plane function V-UPF so that the V-UPF can perform management operation on the session according to the updated session management policy 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 an access point 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 includes:

and the third sending module is used for sending the updated strategy to the visiting 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, including:

the sending module is configured to respond to a request instruction of a home session management function entity H-SMF, and send 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 visitor session management function entity V-SMF, where the session update response includes: the updated session management policy;

Optionally, the apparatus further includes:

the receiving module is used for receiving the strategy updating request sent by the V-PCF;

the generation module is used for generating the updated session management strategy according to the strategy updating request;

and the first sending module is used for 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.

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 visitor location user plane function V-UPF of a terminal device, including:

a receiving module, configured to receive an updated session management policy sent by an 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 first aspects;

the dividing module is used for dividing the session stream of the terminal equipment into a first session stream and a second session stream by adopting the updated session management strategy;

a sending module, configured to send the first session stream to an edge server, so that a low-latency service is provided for the first session stream by the edge server; and sending the second session stream to a home data network H-DN so that the H-DN and the terminal equipment perform session communication.

Optionally, the apparatus further includes:

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

In an eighth aspect, an embodiment of the present invention further provides a computer readable storage medium, where a computer program is stored, where the computer program is read and executed to implement the method according to any one of the first, second, and third aspects.

The beneficial effects of the invention are as follows: the embodiment of the application provides a terminal roaming data processing method, which is applied to a visiting place 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; transmitting a session update request to the home session management function entity H-SMF, the session update request comprising: the session information and the session update request are used for enabling the H-SMF to acquire updated session management policies from the 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: updated session management policies; and sending the updated session management policy to the visiting place user plane function V-UPF so that the V-UPF can perform management operation on the session according to the updated session management policy after establishing the session for the terminal equipment according to the session information. The updated session management policy is obtained from the H-PCF by the V-SMF through the H-SMF, so that the updated session management policy of the attribution is obtained from the visiting place, and after the terminal equipment establishes the session, the visiting place can perform management operation on 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 that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a flow chart of a method for processing roaming data of a terminal according to an embodiment of the present application;

fig. 3 is a flow chart of a method for processing roaming data of a terminal according to an embodiment of the present application;

fig. 4 is an interaction flow diagram of a terminal roaming data processing method provided in an embodiment of the present application;

fig. 5 is a flow chart of a method for processing roaming data of a terminal according to an embodiment of the present application;

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

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

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

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present application, it should be noted that, if the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or the positional relationship that is commonly put when the product of the application is used, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application.

Furthermore, the terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, 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, without conflict, features in embodiments of the present application may be combined with each other.

In the related art, when a terminal device is located in a service area where the terminal device registers and logs in, a session of the terminal device can be managed by a management policy on a network device near the terminal device, and a service corresponding to the management policy is provided. Roaming means that the terminal device leaves the service area where it registered to log in 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 use a home management policy to manage the session of the terminal device.

In view of the above technical problems in the related art, the embodiments of the present application provide a terminal roaming data processing method, where a V-SMF receives a session update response sent by an H-SMF, and sends an updated session management policy 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 updated session management policy of a visited place to a home place is obtained, and after a session is established by a terminal device, after the session is established, the visited place may perform a management operation on the session based on the updated session management policy.

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

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

2. Session management function (Session Management Function, SMF) entity: the method is mainly used for the establishment, modification and release of SM (session) message end points of NAS (Non-Access layer) messages; allocation management of user equipment IP, selecting and controlling UPF for a session, charging data is collecting and supporting charging interfaces, downlink data indication, etc.

3. User plane function (User Plane Function, UPF) entity: i.e. a data plane gateway. Quality of service (quality of service, qoS) handling, etc. for packet routing and forwarding, or user plane data.

4. Access and mobility management function (access and mobility management function, AMF) entity: the method is mainly used for mobility management, access management and the like, and can be used for realizing other functions besides session management in the functions of a mobility management entity (mobility management entity, MME), such as legal interception, access authorization (or authentication) and the like.

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

6. An upstream data classifier (Uplink Classifier, ULCL) entity: is a function that the UPF supports transfer splitting according to the flow matching rules 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: the PDU (Protocol Data Unit ) session anchor refers to the UPF where there is a DN egress.

10. Radio access network (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 merely an exemplary network architecture described from the perspective of a conventional point-to-point architecture and a service architecture, and the network architecture to which the embodiments of the present application are applicable is not limited thereto, and any network architecture capable of implementing the functions of the respective network elements described above is applicable to the embodiments of the present application. It should be understood that the foregoing network elements may communicate through a preset interface, which is not described herein. It should also be understood that the SMF entity, UPF entity, AMF entity, PCF entity, ul cl entity, PSA entity, RAN entity may be understood as network elements for implementing different functions, e.g. may 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 embodiments of the present application, the visited public land mobile network (Visit Public Land Mobile Network, VPLMN) may be simply referred to as "V", and the home public land mobile network (Home Public Land Mobile Network, HPLMN) may be simply referred to as "H".

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

The embodiment of the application provides a terminal roaming data processing method, which is applied to a visiting place session management function entity V-SMF of terminal equipment, and the terminal roaming data processing method provided by the embodiment of the application is explained below.

Fig. 2 is a flow chart of a method for processing roaming data of a terminal according to an embodiment of the present application, as shown in fig. 2, the method may include:

s201, receiving a policy update notification request sent by a visiting place policy control function entity V-PCF.

The policy update notification request includes: session information.

After determining 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, a session update request is sent to a home session management function entity H-SMF.

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

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

Wherein the session update response includes: updated session management policies.

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 associates the session management policy with the H-PCF for updating, and the H-SMF obtains 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 above-described process of S203 is performed, the V-SMF may acquire the updated session management policy.

S204, the updated session management policy is sent to the visiting place user plane function V-UPF, so that after the V-UPF establishes a session for the terminal equipment according to the session information, the session is managed according to the updated session management policy.

In some embodiments, the V-SMF sends the 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 according to 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 according to a list of parameters in the updated session management policy.

Note that N4 is a communication interface between V-SMF and 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.

In summary, 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 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; transmitting a session update request to the home session management function entity H-SMF, the session update request comprising: the session information and the session update request are used for enabling the H-SMF to acquire updated session management policies from the 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: updated session management policies; and sending the updated session management policy to the visiting place user plane function V-UPF so that the V-UPF can perform management operation on the session according to the updated session management policy after establishing the session for the terminal equipment according to the session information. The updated session management policy is obtained from the H-PCF by the V-SMF through the H-SMF, so that the updated session management policy of the attribution is obtained from the visiting place, and after the terminal equipment establishes the session, the visiting place can perform management operation on the session based on the updated session management policy.

Alternatively, as shown in FIG. 1, the V-UPF includes: the upstream data classifier entity ULCL and the visited session anchor entity V-PSA.

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

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

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

It should be noted that, the V-SMF may initiate N4 session modification to the ULCL and the V-PSA according to the updated session management policy, and the ULCL and the 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 comprises:

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

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

Wherein the updated policies may be deployed on the V-RAN.

wherein the policy update request is used to cause 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, send a policy update response to the V-PCF, and after receiving the policy update response, send 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, the EAS can send a policy update request to the V-PCF, the V-PCF receives the policy update request and compares the policy update request with QoS constraints provided by the VPLMN according to the policy update request, if the policy update request of the EAS can be satisfied, the policy update request is forwarded to the H-PCF, and the H-PCF is requested to update the 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 the ullc (Ultra Reliable & Low Latency Communication, ultra-high Reliable and Ultra-low latency) service such as a network-connected automobile or an unmanned aerial vehicle, and when the VPLMN provides services for the mobile HPLMN outside the service area, the ullc service cannot be guaranteed in the prior art. In order to ensure that the URLLC service is required to be accessed to the ESA, the EAS can send a policy update request to the V-PCF, and then the terminal roaming data processing method provided by the embodiment of the application is executed, so that the URLLC service can be ensured when the VPLMN provides service for the terminal roaming data processing method.

It should be noted that, edge computing enables operators and third party services to migrate computing tasks to a network edge server near the UE, and sink computing power to edge computing nodes, so as to reduce congestion on the core network, reduce delay and load of end-to-end transmission on the transmission network, save network bandwidth resources, realize low delay and high bandwidth, further improve data processing efficiency in the universal interconnection era, quickly respond to user requests, improve service quality, and improve user experience.

The embodiment of the application provides a terminal roaming data processing method, which is applied to a home policy control function entity H-PCF of terminal equipment, and is explained below.

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 visiting session management function entity (V-SMF), wherein the session update response comprises: updated session management policies;

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 to the H-SMF after the V-SMF receives the policy update notification request sent by the visiting policy control function entity V-PCF, and the policy update notification request and the session update request both comprise: session information;

In some embodiments, after determining a policy update in the H-PCF, the V-PCF may send a policy update notification request to the V-SMF, which receives the policy update notification request and sends a session update request to the H-SMF; the H-SMF receives the session updating request, the H-PCF responds to the request instruction of the H-SMF, the H-SMF sends updated session management strategies to the H-SMF, the H-SMF and the H-PCF realize the associated updating of the session management strategies, the H-SMF acquires the updated session management strategies from the H-PCF according to the session information, the H-SMF can send session updating responses to the V-SMF, and the V-SMF can receive the session updating responses.

In addition, 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 can initiate N4 session modification to the V-UPF according to the updated session management policy, the V-UPF can identify the N4 session context to be modified, and the parameters of the N4 session context are updated according to a parameter list in the updated session management policy; 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 an embodiment of the present application, the V-UPF includes: an upstream data classifier entity ULCL and an access point session anchor entity V-PSA; updated policies can be deployed on both ULCL and V-PSA. The V-SMF can initiate N4 session modification to the ULCL and the V-PSA according to the updated session management policy, the ULCL and the V-PSA can identify the N4 session context needing to be modified, and the parameters of the N4 session context are updated according to the parameter list in the updated session management policy.

In addition, the V-SMF may also send the updated policy to the visited base station V-RAN via the V-AMF.

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

S301, receiving a policy update request sent by the V-PCF.

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

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

In some embodiments, the EAS may send a policy update request to the V-PCF, the V-PCF receives the policy update request and compares the policy update request with the constraints provided by the VPLMN according to the policy update request, if the policy update request of the EAS can be 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 a session management policy after the policy update request, 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 receives the policy update notification request.

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

and generating an updated session management strategy according to the service quality parameter 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.

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, as shown in fig. 4, where the method may include:

s401, the EAS sends a policy update request to the V-PCF.

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

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

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

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

S406, the V-PCF sends a strategy update notification request to the V-SMF;

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

s408, the session management policy association update of the H-SMF and the H-PCF is carried out;

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

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

s411, the V-PCF sends a policy update complete message to the EAS.

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

s501, receiving updated session management policies sent by the visiting place session management function entity V-SMF.

The updated session management policy is that V-SMF adopts the updated policy obtained by any one of the above-mentioned fig. 2-4.

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

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

S503, the first session stream is sent to the edge server, so that the first session stream is provided with low-delay service through the edge server.

The ULCL sends the first session stream to the edge server through the V-PSA, and the edge server sinks the computing capacity to the edge computing node, so that congestion on the core network is reduced, delay and load of end-to-end transmission on the transmission network are reduced, network bandwidth resources are saved, and low-delay and high-bandwidth service is realized for the first session stream through the edge server.

S504, sending a second session stream to the home data network H-DN to enable the H-DN to perform session communication with the terminal equipment.

In the 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 carried out between the H-DN and the terminal equipment.

In summary, the embodiment of the present application provides a method for processing roaming data of a terminal, including: receiving updated session management policies sent by the visiting place session management function entity V-SMF; dividing a session stream of the terminal equipment into a first session stream and a second session stream by adopting an updated session management strategy; transmitting the first session stream to the edge server such that the first session stream is provided with a low latency service by the edge server; and sending a second session stream to the home data network H-DN to enable the H-DN to communicate with the terminal device. The updated session management policy is obtained from the H-PCF by the V-SMF through the H-SMF, so that the updated session management policy of the attribution is obtained from the visiting place, and after the terminal equipment establishes the session, the visiting place can perform management operation on the session based on the updated session management policy.

Optionally, the method may further include:

and adding a first time and a second time for the data packet in the session stream according to the updated session management strategy.

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, qoS flow identification), 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 for receiving the DL data packet in the GTP-U header, and when the ULCL forwards the DL data packet to the RAN, the ULCL adds the forwarding time t3 into the GTP-U header; the RAN records the time t4 of receipt of the DL packet in the GTP-U header upon receipt of the DL packet forwarded via the UC CL.

In other embodiments, when receiving the UL (uplink data packet) data packet of the QFI from the UE, or when the RAN transmits a virtual UL data packet as a monitoring response, i.e., no UL data packet for UL packet delay monitoring, the RAN encapsulates QMP, t1, t2, t3, t4 and time t5 of transmitting the UL data packet in the GTP-U header; when ULCL receives the UL data packet sent by RAN, recording the receiving time t6 in GTP-U head, when the UL data packet is forwarded to V-PSA via UL CL, adding the forwarding time t7 into GTP-U head; the V-PSA adds time t8 at the time of reception to the GTP-U header when receiving the UL packet branched via the UL CL.

The information monitored is as follows:

in summary, the updated session management policy is obtained from the H-PCF by the V-SMF through the H-SMF, so that the updated session management policy of the home location is obtained by the visited location, and after the session is established by the terminal device, the session can be managed by the visited location based on the updated session management policy.

The following describes a terminal roaming data processing device, a network device, a storage medium, etc. for executing the terminal roaming data processing method provided in the present application, and specific implementation processes and technical effects thereof refer to 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 device according to an embodiment of the present application, and as shown in fig. 6, the device 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, the session update request is used for enabling the H-SMF to obtain updated session management policies 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;

and 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 session is managed according to the updated session management policy.

Optionally, the apparatus further includes:

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:

Optionally, the apparatus further includes:

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

a receiving module 801, configured to receive an updated session management policy sent by an 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 first aspects;

a dividing module 802, configured to divide a session flow of the terminal device into a first session flow and a second session flow 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 first session stream is provided with a low latency service by the edge server; and sending the second session stream to a home data network H-DN so that the H-DN and the terminal equipment perform session communication.

Optionally, the apparatus further includes:

The foregoing apparatus is used for executing the method provided in the foregoing embodiment, and its implementation principle and technical effects are similar, and are not described herein again.

The above modules may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), or one or more microprocessors (digital singnal processor, abbreviated as DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, abbreviated as FPGA), or the like. For another example, when a module above 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 (Central Processing Unit, CPU) or other processor that may invoke the program code. For another example, the 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: the transmitter 901, the receiver 902 and the processor 903, wherein the transmitter 901 and the receiver 902 are connected with 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 present invention also provides a program product, such as a computer readable storage medium, comprising a program for performing the above-described method embodiments when being executed by a processor.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (english: processor) to perform some of the steps of the methods according to the embodiments of the invention. And the aforementioned storage medium includes: u disk, mobile hard disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. 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, characterized in that it is applied to a visiting place session management function entity V-SMF of a terminal device, comprising:

and sending the updated session management policy to a visiting place user plane function V-UPF, so that after the V-UPF establishes a session for the terminal equipment according to the session information, dividing the session flow of the terminal equipment into a first session flow and a second session flow by adopting the updated session management policy, and sending the first session flow to an edge server, so that the edge server provides a low-delay service for the first session flow, and sending the second session flow to a home place H-DN, so that the H-DN communicates with the terminal equipment.

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 according to claim 2, wherein the method further comprises:

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

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

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

the V-SMF is configured to send the updated session management policy to a visiting place user plane function V-UPF, so that after the V-UPF establishes a session for the terminal device according to the session information, divide a session flow of the terminal device into a first session flow and a second session flow by using the updated session management policy, and send the first session flow to an edge server, so that the edge server provides a low-latency service for the first session flow, and send the second session flow to a home place H-DN, so that the H-DN communicates with the terminal device.

6. The method of claim 5, wherein before the responding to the request instruction of the home session management function H-SMF sends the updated session management policy to the home session management function H-SMF, the method further comprises:

Receiving a policy update request sent by the V-PCF;

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

8. A terminal roaming data processing method, characterized in that it is applied to a visitor location user plane function V-UPF of a terminal device, comprising:

receiving an updated session management policy sent by a visiting place 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 claims 1-4;

9. The method of claim 8, wherein the method further comprises:

10. A network device, the network device comprising: 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 of any of the preceding claims 1-9.