CN111565429A - Method and device for receiving indication information, and storage medium - Google Patents

Abstract

The invention provides a method and a device for receiving indication information and a storage medium, wherein the method comprises the following steps: receiving indication information of at least one of: the policy control function PCF carries first indication information in the policy request response message; the technical scheme is adopted to solve the problems that in the related technology, before the UE does not receive the URSP rule or completely receives the URSP rule, the PDU session is directly established or the existing session is selected for the service flow, and the established or selected PDU session is not appropriate.

Description

Method and device for receiving indication information, and storage medium

technical field

The present invention relates to the field of communications, and in particular, 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 to the Access and Mobility Management Function (AMF), AMF returns a registration acceptance response, and at the same time to the Policy Control function) Policy Control Function, abbreviated as PCF) to request UE policy.

The UE policy issued by the PCF includes the UE Route Selection Policy (URSP) rule. 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 art: (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 rules issued by the PCF and finds that the newly created PDU session does not meet the requirements of the URSP rules, so the UE has to release the PDU again. session, and recreate it according to URSP rules.

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

The PCF delivers multiple URSP rules for the same service flow with different priorities. If the UE first receives a URSP rule with a lower priority, and 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 must use the URSP rule for the service again. The flow reselects a PDU session or creates a new PDU session.

In the related art, the UE directly establishes a PDU session or selects an existing session for a service flow before receiving the URSP rules or before all the URSP rules are received, thereby causing the established or selected PDU session to be inappropriate. Propose effective technical solutions.

SUMMARY OF THE INVENTION

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

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

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 delivery 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 delivery of the URSP rule is completed.

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

In the embodiment of the present invention, the method further includes: if the received registration accept 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.

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

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

According to another embodiment of the present invention, an apparatus for receiving indication information is further provided, including: a receiving module, further configured to receive indication information of at least one of the following: the first information carried in the policy request response message by the policy control function PCF One indication information; the second indication information carried in the policy delivery message by the PCF, wherein 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 a 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.

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

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 one of the above when run.

According to the present invention, 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 issuing message, wherein the first indication information The indication information is used to notify the UE to receive the URSP rule of the UE routing policy, and the second indication information is used to notify the UE that the URSP rule has been issued, which solves the problem in the related art that the UE has not received the URSP rule or has not received all the URSP rules. Before the URSP rules, a PDU session is directly established for the service flow or an existing session is selected, which leads to problems such as the inappropriateness of the established or selected PDU session.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

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

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

3 is a schematic flowchart of a UE initiating PDU session creation according to the preferred embodiment 1 of the present invention;

4 is a schematic flowchart of a UE initiating a PDU session creation according to a preferred embodiment 2 of the present invention;

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

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.

Example 1

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

Step S102: 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 delivery 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 delivery of the URSP rule is completed.

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 issuing message, wherein the first indication information The indication information is used to notify the UE to receive the URSP rule of the UE routing policy, and the second indication information is used to notify the UE that the URSP rule has been issued, which solves the problem in the related art that the UE has not received the URSP rule or has not received all the URSP rules. Before the URSP rules, a PDU session is directly established for the service flow or an existing session is selected, which leads to problems such as the inappropriateness of the established or selected PDU session.

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

In the embodiment of the present invention, the method further includes: if the received registration accept 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, among which, the registration process of the UE is divided into two categories: initial registration process and update registration process. In the initial registration process, since there is no PDU session, only a new PDU session will be created. In the update registration process, there will be existing PDU sessions, so either create a new PDU session for the service flow or select an existing PDU session for it. .

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

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

The above technical solution is described below with an example. In the related art, the UE hastily made a non-optimal decision for the service flow before obtaining the URSP rules or all the URSP rules, for example, selecting a PDU session or Create a PDU session. In view of the above problems, the example of the present invention proposes the following technical solutions: PCF informs the UE in advance that URSP rules will be issued, and informs the UE when the URSP rules are issued, so that the UE can wait until all URSP rules are obtained, and then transfer the service flow to the UE. URSP rules are used for matching, and the optimal decision is made according to the matching results.

In the embodiment of the present invention, the PCF carries the URSP rule indication in the policy request response message, which predicts that the UE is about to issue the URSP rule; the PCF carries the URSP rule sending completion indication in the policy delivery message to inform the UE that the URSP rule delivery is completed. .

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

From 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 a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods of the various embodiments of the present invention.

Example 2

In this embodiment, an apparatus for receiving indication information is also provided, and the apparatus is used to implement the above-mentioned embodiments and preferred implementation manners, which have been described and will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, implementations in hardware, or a combination of software and hardware, are also possible and contemplated.

FIG. 2 is a structural block diagram of an apparatus for receiving indication information according to an embodiment of the present invention. As shown in FIG. 2 , the apparatus 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 delivery message, wherein the 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 delivery of the URSP rule is completed.

According to the present invention, 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 issuing message, wherein the first indication information The indication information is used to notify the UE to receive the URSP rule of the UE routing policy, and the second indication information is used to notify the UE that the URSP rule has been issued, which solves the problem in the related art that the UE has not received the URSP rule or has not received all the URSP rules. Before the URSP rules, a PDU session is directly established for the service flow or an existing session is selected, which leads to problems such as the inappropriateness of the established or selected PDU session.

In the embodiment of the present invention, the receiving module is further configured to receive a 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.

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

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

In this embodiment of the present invention, if the received registration accept message carries the first indication information, the protocol data unit PDU session is not initiated within a predetermined time period.

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

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

The above technical solutions are described below with reference to the preferred embodiments, but are not intended 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 flowchart of a UE initiating PDU session creation according to the preferred embodiment 1 of the present invention, as shown in FIG. 3 , including:

In step S501, the UE is powered 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 is decided that there is a URSP rule that needs to be issued, the URSP flag is carried in the response to the AMF and set to true, otherwise the URSP flag is set to false, or does not carry the URSP flag.

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

Step S511, the PCF sends the UE policy to the UE via the AMF, if it is the last UE policy sending 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.

In steps S515 and S517, when the last URSP flag is true in S511, the UE matches the service flow with the URSP rule, and creates 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 flowchart of a UE initiating PDU session creation according to the preferred embodiment 2 of the present invention, as shown in FIG. 4 , including:

Step S601, the UE moves in 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 is determined that there is a URSP rule that needs to be issued, the URSP flag is carried in the response to the AMF and set to true, otherwise the URSP flag is set to false, or does not carry the URSP flag.

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 sends the UE policy to the UE via the AMF, if it is the last UE policy sending 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 S613, the UE returns a success message to the PCF via the AMF.

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

Preferred Embodiment 3

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

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

Step S703, the AMF returns a response message to the PCF.

Step S705, the PCF sends the UE policy to the UE via the AMF, if it is the last UE policy sending 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.

Step S709 and step S711, until 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, the PDU session is initiated. create.

Example 3

An embodiment of the present invention further provides a storage medium, where the storage medium includes a stored program, wherein the above-mentioned program executes any one of the above-mentioned methods when running.

Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes 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 delivery message, wherein the first indication information The second 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 has been issued.

Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (Read-Only Memory, referred to as ROM), a random access memory (Random Access Memory, referred to as RAM), Various media that can store program codes, such as removable hard disks, magnetic disks, or optical disks.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the foregoing 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 the present invention can be implemented by a general-purpose computing device, which can be centralized on a single computing device, or distributed in a network composed of multiple computing devices Alternatively, they may be implemented in program code executable by a computing device, such that they may be stored in a storage device and executed by the computing device, and in some cases, in a different order than here The steps shown or described are performed either by fabricating them separately into individual integrated circuit modules, or by fabricating multiple modules or steps of them into a single integrated circuit module. As such, the present invention is not limited to any particular combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. A method for receiving indication information, comprising:

receiving indication information of at least one of: the policy control function PCF carries first indication information in the policy request response message; and the PCF carries second indication information in the strategy issuing message, wherein the first indication information is used for informing the UE to receive the URSP rule of the UE routing strategy, and the second indication information is used for informing the UE that the issuing of the URSP rule is completed.

2. The method of claim 1, further comprising:

in the UE registration process, after receiving a strategy response message sent by a PCF (PCF) by an access and mobility management function (AMF), the AMF sends a registration acceptance message.

3. The method of claim 2, further comprising:

if the received registration acceptance message carries the first indication information, a Protocol Data Unit (PDU) session is not initiated in a preset time period, or an existing PDU session is selected.

4. The method of claim 1, wherein after receiving the second indication information carried in the policy delivery message by the PCF, the method further comprises:

matching the service flow with the received URSP rule, and executing one of the following according to a matching result: and selecting the activated PDU session to create the PDU session.

5. The method according to any one of claims 1 to 4, wherein the first indication information carried in the policy request response message includes: and carrying a URSP flag in the strategy request response message, and setting the URSP flag to be true.

6. The method according to any one of claims 1 to 4, wherein the second indication information carried in the policy delivery message includes: and carrying a last URSP flag in the strategy issuing message, and setting the last URSP flag to be true.

7. An apparatus for receiving indication information, comprising:

the receiving module is further configured to receive indication information of at least one of the following: the policy control function PCF carries first indication information in the policy request response message; and the PCF carries second indication information in the strategy issuing message, wherein the first indication information is used for informing the UE to receive the URSP rule of the UE routing strategy, and the second indication information is used for informing the UE that the issuing of the URSP rule is completed.

8. The apparatus of claim 7, wherein the receiving module is further configured to receive, during UE registration, a registration accept message sent by an access and mobility management function AMF after receiving the policy response message sent by the PCF.

9. The apparatus according to claim 7 or 8, wherein the first indication information carried in the policy request response message includes: and carrying a URSP flag in the strategy request response message, and setting the URSP flag to be true.

10. The apparatus according to claim 7 or 8, wherein the second indication information carried in the policy delivery message includes: and carrying a last URSP flag in the strategy issuing message, and setting the last URSP flag to be true.

11. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 6 when executed.

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