CN111565429A

CN111565429A - Method and device for receiving indication information and storage medium

Info

Publication number: CN111565429A
Application number: CN201910114875.7A
Authority: CN
Inventors: 严晓健
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-02-14
Filing date: 2019-02-14
Publication date: 2020-08-21
Also published as: WO2020164567A1

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 an apparatus for receiving indication information, and a storage medium.

Background

A User Equipment (UE) registration procedure: the UE initiates registration to an Access and Mobility Management Function (AMF), and the AMF returns a registration acceptance response and requests a Policy Control Function (Policy Control Function) Policy Control Function (PCF), for short) to request a UE Policy.

The UE Policy issued by the PCF includes a UE routing Policy (URSP) rule, the UE selects a proper PDU session for the service flow according to the URSP rule, and if there is no proper PDU session, a new PDU session is created.

The following application scenarios exist in the related art: (1) before the UE does not receive the URSP rule sent by the PCF, the UE initiates the establishment of the PDU session.

In the UE registration process, the AMF returns a registration acceptance response and simultaneously requests a UE policy from the PCF. When receiving the registration acceptance response of the AMF, the UE immediately initiates the creation of the PDU session, and then the UE receives the URSP rule sent by the PCF again, finds that the PDU session just created does not meet the requirement of the URSP rule, and then the UE releases the PDU session again and recreates the session according to the URSP rule.

(2) Before the PCF is not completely taken to issue the URSP rule, the UE selects an activated PDU session or a newly-established PDU session for the service flow.

The PCF issues multiple URSP rules for the same traffic flow, with different priorities. If the UE receives the URSP rule with low priority first, selects the PDU session or newly establishes the PDU session for the service flow according to the URSP rule, and then receives the URSP rule with high priority, the UE can reselect the PDU session or newly establish the PDU session for the service flow according to the URSP rule.

In the related art, an effective technical scheme is not provided for the problem that the established or selected PDU session is not appropriate and the like because the UE directly establishes the PDU session or selects the existing session for the service flow before the UE does not receive the URSP rule or completely receives the URSP rule.

Disclosure of Invention

The embodiment of the invention provides a method and a device for receiving indication information and a storage medium, which are used for at least solving the problems that in the related technology, before a UE does not receive a URSP rule or completely receives the URSP rule, the PDU session is directly established or the existing session is selected for a service flow, and the established or selected PDU session is not appropriate.

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

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.

In an embodiment of the present invention, the method further comprises: 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.

In an embodiment of the present invention, the method further comprises: 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.

In this embodiment of the present invention, after receiving the second indication information carried in the policy delivery message by the PCF, the method further includes: 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.

In this embodiment of the present invention, 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.

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

According to another embodiment of the present invention, there is also provided an apparatus for receiving indication information, including: 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.

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

According to another embodiment of the invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the method of any of the above when executed.

By the invention, indication information of at least one of the following is received: 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 UE routing strategy URSP rule, and the second indication information is used for informing the UE that the URSP rule issuing is completed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

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

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

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

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

fig. 5 is a flowchart illustrating a policy update procedure actively initiated by a PCF according to a preferred embodiment 2 of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

An embodiment of the present invention provides a method for receiving indication information, and fig. 1 is a flowchart of the method for receiving indication information according to the embodiment of the present invention, as shown in fig. 1, including:

step S102, receiving 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.

Through the steps, receiving 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 UE routing strategy URSP rule, and the second indication information is used for informing the UE that the URSP rule issuing is completed.

In an embodiment of the present invention, the method further comprises: 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, wherein the registration process of the UE is divided into an initial registration process and an updating registration process, and in the initial registration process, the PDU session is only newly established because the PDU session does not exist. In the update registration process, there is an existing PDU session, so that either a new PDU session is created for the service flow or an existing PDU session is selected for the service flow. .

The above technical solution is described below with reference to an example, and in the related art, before the UE does not take the URSP rule or does not take all the URSP rules, the UE may prompt a non-optimal decision for the traffic flow, for example, selecting a PDU session or creating a PDU session. In order to solve the above problems, the present invention provides the following technical solutions: PCF predicts UE issuing URSP rule in advance, and informs UE when URSP rule issuing is finished, so UE can match service flow with URSP rule after obtaining all URSP rules, and makes optimal decision according to matching result.

In the embodiment of the invention, PCF carries URSP rule indication in the strategy request response message, and forenotices UE that URSP rule is about to be issued; PCF carries URSP rule sending finish indication in the strategy sending message, tells UE that the URSP rule sending is finished.

In the embodiment of the invention, in the UE registration process, the AMF postpones sending the registration acceptance message to the UE, the AMF triggers to request the PCF for the UE strategy control process to be advanced, and the UE strategy response message of the PCF is received and then the registration acceptance message is sent to the UE; UE receives the register acceptance message, if carrying URSP rule indication, then does not initiate PDU conversation establishment; and the UE receives the URSP rule issuing message, matches the service flow with the URSP rule after receiving the URSP rule sending finishing indication, and selects the activated PDU session or triggers the creation of the PDU session according to the matching result.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

Example 2

In this embodiment, a device for receiving indication information is further provided, where the device is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 2 is a block diagram of a receiving apparatus of indication information according to an embodiment of the present invention, as shown in fig. 2, the apparatus including:

the receiving module 20 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.

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

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

In the embodiment of the invention, after receiving the second indication information carried in the policy issuing message of the PCF, the service flow is matched with the received URSP rule, and one of the following is executed according to the matching result: and selecting the activated PDU session to create the PDU session.

It should be noted that the technical solutions of the above embodiments 1 to 2 may be used in combination or alone, and the embodiments of the present invention are not limited thereto.

The technical solutions described above are described below with reference to preferred embodiments, but are not intended to limit the technical solutions of the embodiments of the present invention.

Preferred embodiment 1

UE initial registration, triggering AMF to request UE policy control from PCF

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

step S501, the UE is started up and initiates an initial registration request to the AMF.

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

And step S505 and step S507, the PCF carries out policy decision, if the URSP rule is decided to be issued, the response to the AMF carries a URSP flag 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 accept message to the UE, and the registration accept message carries the URSP flag received in S04 as it is.

Step S511, PCF sends down UE strategy to UE through AMF, if it is the last UE strategy sending down message containing URSP rule, PCF carries last URSP flag in message and sets it as true, otherwise, last URSP flag is set as false or not.

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

Step S515 and step S517, when last URSP flag is true in step 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, triggering AMF to request UE policy update from PCF

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

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

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

And step S605 and step S607, the PCF makes a policy decision, if the URSP rule is decided to be issued, the response to the AMF carries a URSP flag and is set to true, otherwise, the URSP flag is set to false or does not carry the URSP flag.

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

Step S611, PCF sends down UE strategy to UE through AMF, if it is the last UE strategy sending down message containing URSP rule, PCF carries last URSP flag and sets it to true, otherwise, last URSP flag is set to false or not.

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

Step S615 and step S617, until last URSP flag is true in S611, the UE matches the service flow with the URSP rule, and selects the PDU session on the match for service flow transmission, and initiates the creation of the PDU session if there is no PDU session on the match.

Preferred embodiment 3

Fig. 5 is a schematic flowchart of a policy update procedure actively initiated by a PCF according to a preferred embodiment 2 of the present invention, as shown in fig. 5, including:

step S701, PCF detects that UE strategy is updated, and sends UE strategy updating notice to AMF.

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

Step S705, PCF sends down UE strategy to UE through AMF, if it is the last UE strategy sending down message containing URSP rule, PCF carries last URSP flag and sets it as true, otherwise, last URSP flag is set as false or not.

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

Step S709 and step S711, until last URSP flag is true in step S705, the UE matches the service flow with the URSP rule, and selects the PDU session on the match for service flow transmission, and initiates the creation of the PDU session if there is no PDU session on the match.

Example 3

An embodiment of the present invention further provides a storage medium including a stored program, wherein the program executes any one of the methods described above.

Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

s1, receiving 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.

Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

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

Claims

1. A method for receiving indication information, comprising:

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.