WO2020164567A1

WO2020164567A1 - Method and apparatus for receiving instruction information, and storage medium

Info

Publication number: WO2020164567A1
Application number: PCT/CN2020/075202
Authority: WO
Inventors: 严晓健
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-02-14
Filing date: 2020-02-14
Publication date: 2020-08-20
Also published as: CN111565429A

Abstract

Disclosed are a method and apparatus for receiving instruction information, and a storage medium. The method comprises: receiving at least one of the following instruction information: first instruction information carried by a policy control function (PCF) in a policy request response message; and second instruction information carried by the PCF in a policy delivery message, wherein the first instruction information is used for notifying a UE to receive a UE route selection policy (URSP) rule; the second instruction information is used for informing the UE of the completed delivery of the URSP rule. The application of the technical solution solves the problems in the prior art such as the inappropriate creation or selection of a PDU session caused by the direct creation of the PDU session or selection of an existing session for a service flow before the UE receives the URSP rule or fails to complete receiving the URSP rule.

Description

Method, device and storage medium for receiving instruction information

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 201910114875.7 on February 14, 2019. The entire content of this application is incorporated into this application by reference.

Technical field

This application relates to the field of communications, for example, to a method and device for receiving indication information, and a storage medium.

Background technique

User equipment (User Equipment, referred to as UE) registration process: UE initiates registration with Access and Mobility Management Function (referred to as AMF), AMF returns a registration acceptance response, and at the same time to the policy control function) Policy Control Function (referred to as PCF for short) requests the UE policy.

The UE policy issued by the PCF includes UE Route Selection Policy (URSP) rules. The UE selects a suitable PDU session for the service flow according to the URSP rule. If there is no suitable PDU session, a new PDU session is created.

The following application scenarios exist in the related technology: (1) The UE initiates the creation of a PDU session before obtaining the URSP rule issued by the PCF.

In the UE registration process, the AMF requests the PCF for the UE policy while returning the registration acceptance response. As soon as the UE receives the registration acceptance response from the AMF, it immediately initiates the creation of a PDU session, and then the UE receives the URSP rule issued by the PCF, and finds that the newly created PDU session does not meet the requirements of the URSP rule, so the UE has to release the PDU again Session and re-create the session according to URSP rules.

(2) The UE selects an activated PDU session or a new PDU session for the service flow before the URSP rule is issued by the PCF.

The PCF has issued multiple URSP rules for the same service flow with different priorities. If the UE first receives a URSP rule with a lower priority, selects a PDU session or creates a new PDU session for the service flow according to the URSP rule, and then receives a URSP rule with a higher priority, the UE has to perform the service according to the URSP rule The flow re-selects a PDU session or creates a new PDU session.

In related technologies, the UE directly establishes a PDU session or selects an existing session for the service flow before receiving the URSP rules or receiving all the URSP rules, which leads to problems such as inappropriate PDU sessions established or selected. Propose effective technical solutions.

Summary of the invention

The embodiment of the present invention provides a method and device for receiving indication information, and a storage medium to at least solve the problem that the UE in the related art directly establishes a PDU session or a service flow before receiving the URSP rules or before receiving all the URSP rules. Selecting an existing session will lead to problems such as an inappropriate PDU session established or selected.

According to an embodiment of the present invention, there is provided a method for receiving indication information, including:

Receive at least one of the following indication information: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuance message, where the first indication information is used for The UE is notified to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued is complete.

In the embodiment of the present invention, the method further includes: in the UE registration process, receiving the access and mobility management function AMF after receiving the policy response message sent by the PCF, and then the registration acceptance message sent by the AMF.

In the embodiment of the present invention, the method further includes: if the received registration acceptance message carries the first indication information, not initiating a protocol data unit PDU session within a predetermined period of time, or selecting an existing PDU Conversation.

In the embodiment of the present invention, after receiving the second indication information carried by the PCF in the policy issuance message, the method further includes: matching the service flow with the received URSP rule, and performing one of the following according to the matching result : Select an activated PDU session and create a PDU session.

In the embodiment of the present invention, the first indication information carried in the policy request response message includes: carrying the URSP flag in the policy request response message, and the URSP flag is set to true.

In the embodiment of the present invention, the second indication information carried in the policy issuing message includes: carrying the last URSP flag in the policy issuing message, and the last URSP flag is set to true.

According to another embodiment of the present invention, there is also provided an indication information receiving device, including: a receiving module, further configured to receive at least one of the following indication information: the policy control function PCF carried in the policy request response message One indication information; the second indication information carried in the policy issuance message by the PCF, where the first indication information is used to notify the UE to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE of the The URSP rules are issued.

In the embodiment of the present invention, the receiving module is further configured to receive the registration acceptance message sent by the AMF after the access and mobility management function AMF receives the policy response message sent by the PCF during the UE registration process.

According to another embodiment of the present invention, there is also provided a storage medium in which a computer program is stored, wherein the computer program is configured to execute the method described in any of the above items when running.

Through this application, at least one of the following indication information is received: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuance message, wherein the first indication information The indication information is used to notify the UE to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued is completed, which solves the problem that the UE has not received the URSP rule or has not received all Before the URSP rule, a PDU session is directly established for the service flow or an existing session is selected, which leads to problems such as an inappropriate PDU session established or selected.

Figure overview

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation of the application. In the attached picture:

Fig. 1 is a flowchart of a method for receiving indication information according to an embodiment of the present invention;

Fig. 2 is a structural block diagram of a device for receiving indication information according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a flow in which a UE initiates PDU session creation according to the preferred embodiment 1 of the present invention;

Fig. 4 is a schematic diagram of a flow of UE initiating PDU session creation according to preferred embodiment 2 of the present invention;

Fig. 5 is a schematic flowchart of a PCF initiatively initiating a policy update process according to the preferred embodiment 2 of the present invention.

detailed description

Hereinafter, the application will be described in detail with reference to the drawings and in conjunction with embodiments. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict.

It should be noted that the terms “first” and “second” in the specification and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence.

Example 1

The embodiment of the present invention provides a method for receiving indication information. FIG. 1 is a flowchart of the method for receiving indication information according to an embodiment of the present invention. As shown in FIG. 1, the method includes:

Step S102, receiving at least one of the following indication information: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuance message, wherein the first indication The information is used to notify the UE to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued.

Through the above steps, at least one of the following indication information is received: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuance message, wherein the first indication information The indication information is used to notify the UE to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued is completed, which solves the problem that the UE has not received the URSP rule or has not received all Before the URSP rule, a PDU session is directly established for the service flow or an existing session is selected, which leads to problems such as an inappropriate PDU session established or selected.

In the embodiment of the present invention, the method further includes: if the received registration acceptance message carries the first indication information, not initiating a protocol data unit PDU session within a predetermined period of time, or selecting an existing PDU Session, where the UE registration process is divided into two types: initial registration process and update registration process. In the initial registration process, since there is no PDU session, only a new PDU session is created. In the update registration process, there will be an existing PDU session, so either create a new PDU session for the service flow or select an existing PDU session for it. .

The following describes the above technical solution with an example. In related technologies, the UE hastily made a non-optimal decision for the service flow before obtaining the URSP rules or not all the URSP rules, for example, selecting a PDU session or Create a PDU session. This application example proposes the following technical solutions to address the above-mentioned problems: PCF notices that UE will issue URSP rules in advance, and informs UE when the URSP rules are issued, so that the UE can wait until all URSP rules are obtained, and then combine the service flow with URSP rules match and make the best decision based on the matching result.

In the embodiment of the present invention, the PCF carries the URSP rule indication in the policy request response message to inform the UE that the URSP rule is about to be issued; the PCF carries the URSP rule sending completion indication in the policy issuance message to inform the UE that the URSP rule has been issued. .

In the embodiment of the present invention, in the UE registration process, AMF delays sending the registration acceptance message to the UE, triggers the AMF to request the PCF to advance the UE policy control process, and then sends the registration acceptance message to the UE after receiving the UE policy response message from the PCF ; The UE receives the registration acceptance message, if it carries the URSP rule indication, it will not initiate the creation of the PDU session temporarily; the UE receives the URSP rule delivery message, and the UE will send the service flow and the URSP rule after receiving the URSP rule delivery instruction Perform matching, and select an activated PDU session or trigger the creation of a PDU session according to the matching result.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes a number of instructions to enable a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method of each embodiment of the present application.

Example 2

In this embodiment, a device for receiving indication information is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementations, and those that have been explained will not be repeated. As used below, the term "module" can implement a combination of software and/or hardware with predetermined functions. Although the devices described in the following embodiments are preferably implemented by software, hardware or a combination of software and hardware is also possible and conceived.

Fig. 2 is a structural block diagram of a device for receiving indication information according to an embodiment of the present invention. As shown in Fig. 2, the device includes:

The receiving module 20 is further configured to receive at least one of the following indication information: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuing message, where The first indication information is used to notify the UE to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued is complete.

In the embodiment of the present invention, in the UE registration process, after receiving the policy response message sent by the PCF, the access and mobility management function AMF receives the registration acceptance message sent by the AMF.

In the embodiment of the present invention, if the received registration acceptance message carries the first indication information, no protocol data unit PDU session is initiated within a predetermined period of time.

In the embodiment of the present invention, after receiving the second indication information carried by the PCF in the policy issuance message, the service flow is matched with the received URSP rule, and one of the following is performed according to the matching result: select the activated PDU Session, create a PDU session.

It should be noted that the technical solutions of Embodiment 1 to Embodiment 2 described above can be used in combination or used alone, which is not limited in the embodiment of the present invention.

The above technical solutions are described below in conjunction with preferred embodiments, but they are not used to limit the technical solutions of the embodiments of the present invention.

Preferred embodiment 1

The initial registration of the UE triggers the AMF to request the PCF for UE policy control.

Fig. 3 is a schematic diagram of a flow of UE initiating PDU session creation according to preferred embodiment 1 of the present invention, as shown in Fig. 3, including:

In step S501, the UE powers on and initiates an initial registration request to the AMF.

Step S503, the AMF sends a UE policy control request to the PCF.

In steps S505 and S507, the PCF makes a policy decision. If it decides that there is a URSP rule to be issued, it carries the URSP flag in the response to the AMF and is set to true, otherwise the URSP flag is set to false or does not carry the URSP flag.

In step S509, the AMF sends a registration acceptance message to the UE, carrying the URSP flag received in S04 as it is.

In step S511, the PCF issues the UE policy to the UE via the AMF. If it is the last UE policy delivery message containing the URSP rule, the PCF carries the last URSP flag in the message and is set to true, otherwise the last URSP flag is set to false, or Does not carry the last URSP flag.

Step S513, the UE returns a success message to the PCF via the AMF.

Steps S515 and S517, until the last URSP flag in S511 is true, the UE will match the service flow with the URSP rule, and create a corresponding PDU session according to the matching result.

Preferred embodiment 2

UE mobility update registration triggers AMF to request UE policy update from PCF

Fig. 4 is a schematic diagram of the flow of UE initiating PDU session creation according to preferred embodiment 2 of the present invention, as shown in Fig. 4, including:

In step S601, the UE moves its position and initiates a mobility update registration request to the AMF.

Step S603: The AMF sends a UE policy control update request to the PCF.

In steps S605 and S607, the PCF makes a policy decision. If it decides that there is a URSP rule to be issued, it carries the URSP flag in the response to the AMF and is set to true, otherwise the URSP flag is set to false, or the URSP flag is not carried.

In step S609, the AMF sends a registration acceptance message to the UE, carrying the URSP flag received in S04 as it is.

Step S611: The PCF issues the UE policy to the UE via the AMF. If it is the last UE policy delivery message containing the URSP rule, the PCF carries the last URSP flag in the message and is set to true, otherwise the last URSP flag is set to false, or Does not carry the last URSP flag.

In step S613, the UE returns a success message to the PCF via the AMF.

Steps S615 and S617, until the last URSP flag in S611 is true, the UE matches the service flow with the URSP rule, and selects the matched PDU session for service flow transmission. If there is no matching PDU session, initiates the creation of a PDU session .

Preferred embodiment 3

Fig. 5 is a schematic flowchart of a PCF initiatively initiating a policy update process according to the preferred embodiment 2 of the present invention, as shown in Fig. 5, including:

In step S701, the PCF detects that the UE policy is updated, and sends a UE policy update notification to the AMF.

In step S703, the AMF returns a response message to the PCF.

Step S705: The PCF issues the UE policy to the UE via the AMF. If it is the last UE policy delivery message containing the URSP rule, the PCF carries the last URSP flag in the message and is set to true, otherwise the last URSP flag is set to false, or Does not carry the last URSP flag.

Step S707, the UE returns a success message to the PCF via the AMF.

Steps S709 and S711, after the last URSP flag is true in step S705, the UE matches the service flow with the URSP rule, and selects the matched PDU session for service flow transmission. If there is no matching PDU session, it initiates the PDU session create.

Example 3

An embodiment of the present invention also provides a storage medium, the storage medium including a stored program, wherein the above-mentioned program executes any of the above-mentioned methods when the program is running.

Optionally, in this embodiment, the foregoing storage medium may be configured to store program code for executing the following steps:

S1. Receive at least one of the following indication information: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuance message, where the first indication information It is used to notify the UE to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued is complete.

Optionally, in this embodiment, the foregoing storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (Random Access Memory, RAM for short), Various media that can store program codes, such as mobile hard disks, magnetic disks, or optical disks.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the above-mentioned embodiments and optional implementation manners, and details are not described herein again in this embodiment.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of this application can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Above, alternatively, they can be implemented with program codes executable by a computing device, so that they can be stored in a storage device for execution by the computing device, and in some cases, can be executed in a different order than here. Perform the steps shown or described, or fabricate them into individual integrated circuit modules, or fabricate multiple modules or steps of them into a single integrated circuit module to achieve. In this way, this application is not limited to any specific hardware and software combination.

The above descriptions are only preferred embodiments of the application, and are not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the principles of this application shall be included in the protection scope of this application.

Claims

A method for receiving indication information includes:

Receive at least one of the following indication information: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuing message, where the first indication information is used for The UE is notified to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued is complete.
The method according to claim 1, further comprising:

In the UE registration process, after receiving the policy response message sent by the PCF, the access and mobility management function AMF receives the registration acceptance message sent by the AMF.
The method according to claim 2, further comprising:

In the case that the received registration acceptance message carries the first indication information, no protocol data unit PDU session is initiated within a predetermined period of time, or an existing PDU session is selected.
The method according to claim 1, after receiving the second indication information carried by the PCF in the policy issuing message, the method further comprises:

Match the service flow with the received URSP rule, and perform one of the following according to the matching result: select an activated PDU session, and create a PDU session.
The method according to any one of claims 1-4, wherein the first indication information carried in the policy request response message includes: the URSP flag carried in the policy request response message, and the URSP flag is set to true .
The method according to any one of claims 1 to 4, wherein the second indication information carried in the policy issuance message includes: last URSP flag carried in the policy issuance message, and the last URSP flag is set Is true.
A receiving device for indication information, including:

The receiving module is configured to receive at least one of the following indication information: the first indication information carried by the policy control function PCF in the policy request response message; the second indication information carried by the PCF in the policy issuing message, wherein the first indication information One indication information is used to notify the UE to receive the UE routing policy URSP rule, and the second indication information is used to notify the UE that the URSP rule is issued is complete.
The device according to claim 7, wherein the receiving module is further configured to:

In the UE registration process, after receiving the policy response message sent by the PCF, the access and mobility management function AMF receives the registration acceptance message sent by the AMF.
The device according to claim 7 or 8, wherein the first indication information carried in the policy request response message includes: the URSP flag carried in the policy request response message, and the URSP flag is set to true.
The device according to claim 7 or 8, wherein the second indication information carried in the policy issuance message includes: last URSP flag carried in the policy issuance message, and the last URSP flag is set to true.
A storage medium, wherein a computer program is stored in the storage medium, and the computer program is configured to execute the method described in any one of claims 1 to 6 when the computer program is run.