Method and device for receiving indication information, and storage medium

Abstract

The present invention provides a method and device for receiving indication information, and a storage medium, wherein the method comprises: receiving at least one of the following indication information: first indication information carried by a policy control function PCF in a policy request response message; second indication information carried by the PCF in a policy delivery message, wherein the first indication information is used to notify the UE to receive a UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the delivery of the URSP rule is complete. The above technical solution is adopted to solve the problem in the related technology that the UE directly establishes a PDU session or selects an existing session for a service flow before receiving the URSP rule or not receiving all the URSP rules, thereby causing the established or selected PDU session to be inappropriate.

Description

Technical Field

[0001] 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 Art

[0002] User Equipment (UE) registration process: UE initiates registration with the Access and Mobility Management Function (AMF), AMF returns a registration acceptance response, and requests UE policy from the Policy Control Function (PCF).

[0003] The UE policy sent 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 rules. If there is no suitable PDU session, a new PDU session is created.

[0004] The related art has the following application scenarios: (1) The UE initiates the creation of a PDU session before obtaining the URSP rules sent by the PCF.

[0005] During the UE registration process, AMF returns the registration acceptance response and requests the PCF for UE policy. As soon as the UE receives the registration acceptance response from the AMF, it immediately initiates the creation of a PDU session. 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. Therefore, the UE has to release the PDU session and recreate the session according to the URSP rules.

[0006] (2) Before the UE obtains all URSP rules sent by the PCF, it selects an activated PDU session or creates a new PDU session for the service flow.

[0007] PCF issues multiple URSP rules for the same service flow with different priorities. If the UE first receives a low-priority URSP rule and selects a PDU session or creates a new PDU session for the service flow based on the URSP rule, and then receives a high-priority URSP rule, the UE must reselect a PDU session or create a new PDU session for the service flow based on the URSP rule.

[0008] Regarding the related technology, the UE directly establishes a PDU session or selects an existing session for a service flow before receiving the URSP rule or receiving all the URSP rules, which leads to the problem that the established or selected PDU session is inappropriate. No effective technical solution has been proposed yet. Summary of the invention

[0009] 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 the UE directly establishes a PDU session for the service flow or selects an existing session before receiving the URSP rule or receiving all the URSP rules, thereby causing the established or selected PDU session to be inappropriate.

[0010] According to an embodiment of the present invention, a method for receiving indication information is provided, comprising:

[0011] Receive at least one of the following indication information: first indication information carried by the policy control function PCF in a policy request response message; second indication information carried by the PCF in a policy delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the URSP rule delivery is completed.

[0012] In an embodiment of the present invention, the method further includes: during the UE registration process, receiving a registration acceptance message sent by the access and mobility management function AMF after receiving a policy response message sent by the PCF.

[0013] In the embodiment of the present invention, the method further includes: if the received registration acceptance message carries the first indication information, then not initiating a protocol data unit PDU session within a predetermined time period, or selecting an existing PDU session.

[0014] In an 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 performing one of the following according to the matching result: selecting an activated PDU session and creating a PDU session.

[0015] 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.

[0016] In the embodiment of the present invention, the second indication information carried in the policy delivery message includes: carrying a last URSP flag in the policy delivery message, and the last URSP flag is set to true.

[0017] According to another embodiment of the present invention, a device for receiving indication information is also provided, including: a receiving module, which is also used to receive at least one of the following indication information: first indication information carried by the policy control function PCF in a policy request response message; second indication information carried by the PCF in a policy delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the delivery of the URSP rule is completed.

[0018] In an embodiment of the present invention, the receiving module is also used to receive a registration acceptance message sent by the access and mobility management function AMF after the AMF receives a policy response message sent by the PCF during the UE registration process.

[0019] 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.

[0020] In the embodiment of the present invention, the second indication information carried in the policy delivery message includes: carrying a last URSP flag in the policy delivery message, and the last URSP flag is set to true.

[0021] According to another embodiment of the present invention, a storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute any of the above methods when running.

[0022] Through the present invention, at least one of the following indication information is received: first indication information carried by the policy control function PCF in a policy request response message; second indication information carried by the PCF in a policy delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the delivery of the URSP rule is completed, thereby solving the problem in the related art that the UE directly establishes a PDU session for the service flow or selects an existing session before receiving the URSP rule or not receiving all the URSP rules, thereby causing the established or selected PDU session to be inappropriate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this 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 drawings:

[0024] Figure 1 is a flowchart of a method for receiving indication information according to an embodiment of the present invention;

[0025] Figure 2 is a structural block diagram of a device for receiving indication information according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of a process of UE initiating PDU session creation according to a preferred embodiment 1 of the present invention;

[0027] Figure 4 A schematic diagram of a process of initiating a PDU session creation by a UE according to a preferred embodiment 2 of the present invention;

[0028] Figure 5 It is a flowchart of a PCF actively initiating a policy update process according to a preferred embodiment 2 of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] Example 1

[0032] The embodiment of the present invention provides a method for receiving indication information. Figure 1 is a flow chart of a method for receiving indication information according to an embodiment of the present invention. Figure 1 As shown, including:

[0033] Step S102, receiving at least one of the following indication information: first indication information carried by the policy control function PCF in the policy request response message; second indication information carried by the PCF in the policy delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the URSP rule delivery is completed.

[0034] 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 delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the delivery of the URSP rule is completed, which solves the problem in the related art that the UE directly establishes a PDU session for the service flow or selects an existing session before receiving the URSP rule or not receiving all the URSP rules, thereby causing the established or selected PDU session to be inappropriate.

[0035] In an embodiment of the present invention, the method further includes: during the UE registration process, receiving a registration acceptance message sent by the access and mobility management function AMF after receiving a policy response message sent by the PCF.

[0036] In an embodiment of the present invention, the method further includes: if the received registration acceptance message carries the first indication information, then a protocol data unit PDU session is not initiated within a predetermined time period, or an existing PDU session is selected, wherein the UE registration process is divided into two categories: an initial registration process and an 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 an existing PDU session, so either a new PDU session is created for the service flow, or an existing PDU session is selected for it. .

[0037] In an 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 performing one of the following according to the matching result: selecting an activated PDU session and creating a PDU session.

[0038] 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.

[0039] In the embodiment of the present invention, the second indication information carried in the policy delivery message includes: carrying a last URSP flag in the policy delivery message, and the last URSP flag is set to true.

[0040] The above technical solution is explained below with reference to an example. In the related art, the UE hastily makes a non-optimal decision for the service flow, such as selecting a PDU session or creating a PDU session, before obtaining the URSP rules or obtaining all the URSP rules. In view of the above problem, the example of the present invention proposes the following technical solution: the PCF notifies the UE in advance that the URSP rules will be issued, and informs the UE when the URSP rules are issued, so that the UE can wait until all the URSP rules are obtained, match the service flow with the URSP rules, and make the optimal decision based on the matching result.

[0041] In the embodiment of the present invention, the PCF carries a URSP rule indication in the policy request response message to inform the UE that URSP rules will be issued soon; the PCF carries a URSP rule sending completion indication in the policy issuing message to tell the UE that its URSP rules have been issued.

[0042] In an embodiment of the present invention, in the UE registration process, the AMF postpones sending a registration acceptance message to the UE, advances the AMF triggering request to the PCF for the UE policy control process, and waits for the UE policy response message from the PCF to send a registration acceptance message to the UE; the UE receives the registration acceptance message, and if it carries a URSP rule indication, the creation of a PDU session is not initiated for the time being; the UE receives the URSP rule sending message, and waits for the URSP rule sending completion indication to be received before the UE matches the service flow and the URSP rule, and selects the activated PDU session or triggers the creation of a PDU session according to the matching result.

[0043] Through the description of the above implementation methods, 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 a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods of various embodiments of the present invention.

[0044] Example 2

[0045] In this embodiment, a receiving device for indication information is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made are not repeated here. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0046] Figure 2 is a structural block diagram of a device for receiving indication information according to an embodiment of the present invention. Figure 2 As shown, the device comprises:

[0047] The receiving module 20 is also used to receive at least one of the following indication information: first indication information carried by the policy control function PCF in the policy request response message; second indication information carried by the PCF in the policy delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the URSP rule delivery is completed.

[0048] Through the present invention, at least one of the following indication information is received: first indication information carried by the policy control function PCF in a policy request response message; second indication information carried by the PCF in a policy delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the delivery of the URSP rule is completed, thereby solving the problem in the related art that the UE directly establishes a PDU session for the service flow or selects an existing session before receiving the URSP rule or not receiving all the URSP rules, thereby causing the established or selected PDU session to be inappropriate.

[0049] In an embodiment of the present invention, the receiving module is also used to receive a registration acceptance message sent by the access and mobility management function AMF after the AMF receives a policy response message sent by the PCF during the UE registration process.

[0050] 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.

[0051] In the embodiment of the present invention, the second indication information carried in the policy delivery message includes: carrying a last URSP flag in the policy delivery message, and the last URSP flag is set to true.

[0052] In an embodiment of the present invention, during the UE registration process, the access and mobility management function AMF receives the registration acceptance message sent by the PCF after receiving the policy response message sent by the PCF.

[0053] In the embodiment of the present invention, if the received registration acceptance message carries the first indication information, a protocol data unit PDU session is not initiated within a predetermined time period.

[0054] 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: selecting an activated PDU session and creating a PDU session.

[0055] It should be noted that the technical solutions of the above-mentioned Embodiments 1 and 2 can be used in combination or separately, and the embodiments of the present invention are not limited to this.

[0056] The above technical solution is described below in conjunction with a preferred embodiment, but is not intended to limit the technical solution of the embodiment of the present invention.

[0057] Preferred embodiment 1

[0058] UE initial registration triggers AMF to request UE policy control from PCF

[0059] Figure 3 A schematic diagram of a process of initiating a PDU session creation by a UE according to a preferred embodiment 1 of the present invention, as shown in FIG. Figure 3 As shown, including:

[0060] Step S501: UE turns on and initiates an initial registration request to AMF.

[0061] Step S503: AMF sends a UE policy control request to PCF.

[0062] In step S505 and step S507, the PCF makes a policy decision. If it is decided that a URSP rule needs to be issued, the PCF carries the URSP flag in the response to the AMF and sets it to true. Otherwise, the URSP flag is set to false, or the URSP flag is not carried.

[0063] Step S509: AMF sends a registration accept message to the UE, carrying the URSP flag received in S04 as is.

[0064] Step S511: The PCF sends 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 sets it to true; otherwise, the last URSP flag is set to false, or the last URSP flag is not carried.

[0065] Step S513: The UE returns a success message to the PCF via the AMF.

[0066] In step S515 and step S517, when the last URSP flag in S511 is true, the UE matches the service flow with the URSP rule and creates a corresponding PDU session according to the matching result.

[0067] Preferred embodiment 2

[0068] UE mobility update registration triggers AMF to request UE policy update from PCF

[0069] Figure 4 A schematic diagram of a process of initiating a PDU session creation by a UE according to a preferred embodiment 2 of the present invention, as shown in FIG. Figure 4 As shown, including:

[0070] Step S601: The UE moves and initiates a mobility update registration request to the AMF.

[0071] Step S603: AMF sends a UE policy control update request to PCF.

[0072] In step S605 and step S607, the PCF makes a policy decision. If it is decided that a URSP rule needs to be issued, the PCF carries the URSP flag in the response to the AMF and sets it to true. Otherwise, the URSP flag is set to false, or the URSP flag is not carried.

[0073] Step S609: AMF sends a registration accept message to the UE, carrying the URSP flag received in S04 as is.

[0074] Step S611: The PCF sends 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 sets it to true; otherwise, the last URSP flag is set to false, or the last URSP flag is not carried.

[0075] Step S613: The UE returns a success message to the PCF via the AMF.

[0076] In step S615 and step S617, when the last URSP flag in S611 is true, the UE matches the service flow with the URSP rule and selects the matching PDU session for service flow transmission. If there is no matching PDU session, the creation of a PDU session is initiated.

[0077] Preferred embodiment 3

[0078] Figure 5 FIG. 1 is a flow chart of a PCF actively initiating a policy update process according to a preferred embodiment 2 of the present invention. Figure 5 As shown, including:

[0079] Step S701: PCF detects that the UE policy is updated and sends a UE policy update notification to AMF.

[0080] Step S703: AMF returns a response message to PCF.

[0081] Step S705: The PCF sends 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 sets it to true; otherwise, the last URSP flag is set to false, or the last URSP flag is not carried.

[0082] Step S707: The UE returns a success message to the PCF via the AMF.

[0083] In step S709 and step S711, when the last URSP flag is true in step S705, the UE matches the service flow with the URSP rule and selects the matching PDU session for service flow transmission. If there is no matching PDU session, the creation of a PDU session is initiated.

[0084] Example 3

[0085] An embodiment of the present invention further provides a storage medium, which includes a stored program, wherein the program executes any of the above methods when it is run.

[0086] Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the following steps:

[0087] S1, receiving at least one of the following indication information: first indication information carried by the policy control function PCF in a policy request response message; second indication information carried by the PCF in a policy delivery message, wherein the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule, and the second indication information is used to notify the UE that the URSP rule delivery is completed.

[0088] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0089] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0090] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for receiving indication information, characterized in that: include: During the UE registration process, receiving a registration acceptance message sent by an access and mobility management function AMF, if the received registration acceptance message carries the first indication information, not initiating a protocol data unit PDU session within a predetermined time period, or not selecting an existing PDU session; The registration acceptance message is sent by the AMF after receiving the policy request response message sent by the policy control function PCF, and the policy request response message sent by the PCF to the AMF carries the first indication information, and the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule; The method further includes: after receiving the registration acceptance message sent by the AMF, further receiving second indication information sent by the AMF, wherein the second indication information is forwarded by the AMF after receiving the policy delivery message sent by the PCF, and the policy delivery message sent by the PCF to the AMF carries the second indication information, and the second indication information is used to notify the UE that the URSP rule delivery is completed; Among them, after receiving the second indication information sent by the AMF, the method also includes: matching the service flow with the received URSP rule, and performing one of the following according to the matching result: selecting an activated PDU session and creating a PDU session.

2. The method according to claim 1, characterized in that The PCF carries the first indication information in the policy request response message in the following manner: the PCF carries a URSP flag in the policy request response message, and the URSP flag is set to true.

3. The method according to claim 1, characterized in that The PCF carries the second indication information in the policy delivery message in the following manner: the PCF carries the last URSP flag in the policy delivery message, and the last URSP flag is set to true.

4. A device for receiving indication information, characterized in that: include: A receiving module, configured to receive a registration acceptance message sent by an access and mobility management function AMF during a UE registration process, and if the received registration acceptance message carries first indication information, not initiating a protocol data unit PDU session within a predetermined time period, or not selecting an existing PDU session; The registration acceptance message is sent by the AMF after receiving the policy request response message sent by the policy control function PCF, and the policy request response message sent by the PCF to the AMF carries the first indication information, and the first indication information is used to notify the UE to receive the UE routing selection policy URSP rule; The device is further used to receive, after receiving the registration acceptance message sent by the AMF, second indication information sent by the AMF, wherein the second indication information is forwarded by the AMF after receiving the policy delivery message sent by the PCF, and the policy delivery message sent by the PCF to the AMF carries the second indication information, and the second indication information is used to notify the UE that the URSP rule delivery is completed; The device is also used to match the service flow with the received URSP rule after receiving the second indication information sent by the AMF, and perform one of the following according to the matching result: select an activated PDU session and create a PDU session.

5. The device according to claim 4, characterized in that The PCF carries the first indication information in the policy request response message in the following manner: the PCF carries a URSP flag in the policy request response message, and the URSP flag is set to true.

6. The device according to claim 4, characterized in that The PCF carries the second indication information in the policy delivery message in the following manner: the PCF carries the last URSP flag in the policy delivery message, and the last URSP flag is set to true.

7. A storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method according to any one of claims 1 to 3 when executed.

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