CN117528642A - Method for controlling reflection QoS, UPF entity, communication system and storage medium - Google Patents

Abstract

The present disclosure provides a method for controlling reflection QoS, a UPF entity, a communication system, and a storage medium, relating to the field of communication. The method for controlling the reflection QoS comprises the following steps: extracting first indication information and a parameter value p of a periodic reflection parameter from first QoS execution rule QER information which is sent by a session management function SMF entity and is associated with a preset service data flow SDF; in each transmission period, p downlink data packets to be transmitted, which belong to the SDF, are transmitted to the radio access network device, wherein first indication information is added for the 1 st downlink data packet to be transmitted in the p downlink data packets to be transmitted.

Description

Method for controlling reflection QoS, UPF entity, communication system and storage medium

Technical Field

The present disclosure relates to the field of communications, and in particular to a method, UPF (User Plane Function ) entity, communication system and storage medium for controlling reflected QoS (Quality of Service ).

Background

Currently, when a reflection (Reflective) QoS is required for a certain SDF (Service Data Flow ) by the 5GC (5 g core,5g core network), a QER (QoS Enforcement Rule ) needs to be sent to a UPF entity, where a RQI (Reflective QoS Indication, reflective QoS indicator) field in the QER is set to "1", and after the UPF entity receives this information, when forwarding all downlink data packets belonging to the SDF, the information "rqi=1" is added to a packet header of the downlink data packet and sent to a RAN (Radio Access Network ) device and a UE (User Equipment) so that the RAN and the UE perform continuous Reflective QoS guarantee on the downlink data packets belonging to the SDF.

Disclosure of Invention

The inventors noted that in the related art, in order to enable the RAN and the UE to continuously perform the reflection QoS guarantee on the downstream data packets belonging to the specified SDF, RQI information needs to be added to each downstream data packet belonging to the specified SDF, so that more transmission resources are occupied.

Accordingly, the present disclosure provides a reflection QoS control scheme, which does not need to implement continuous reflection QoS guarantee under the condition that RQI information is added to each downlink data packet belonging to a specified SDF, thereby effectively reducing signaling overhead and improving transmission efficiency of a network.

According to a first aspect of embodiments of the present disclosure, there is provided a method for controlling reflection QoS, performed by a user plane function, UPF, entity, comprising: extracting first indication information and a parameter value p of a periodic reflection parameter from first QoS execution rule QER information which is sent by a session management function SMF entity and is associated with a preset service data flow SDF; and in each transmission period, transmitting p downlink data packets to be transmitted, which belong to the SDF, to wireless access network equipment, wherein first indication information is added for the 1 st downlink data packet to be transmitted in the p downlink data packets to be transmitted.

In some embodiments, the first indication information is a reflective QoS indicator RQI with a value of 1.

In some embodiments, extracting the first indication information and the parameter value p of the periodic reflection parameter from the first QoS execution rule QER information associated with the preset service data flow SDF sent by the session management function SMF entity includes: and after receiving the first QER information sent by the SMF entity through a first signaling through a preset interface, extracting the first indication information and the parameter value p of the periodic reflection parameter from the first QER information.

In some embodiments, the first signaling includes packet forwarding control protocol, PFCP, creation signaling or PFCP modification signaling.

In some embodiments, second indication information is extracted from second QER information associated with the SDF sent by the SMF entity; adding the second indication information for the downlink data packet to be sent, which belongs to the SDF; and sending the downlink data packet added with the second indication information to wireless access network equipment.

In some embodiments, adding the second indication information for the downstream data packet to be sent belonging to the SDF includes: and adding the second indication information for the downlink data packet to be sent currently belonging to the SDF.

In some embodiments, adding the second indication information for the downstream data packet to be sent belonging to the SDF includes: and adding the second indication information to the 1 st downlink data packet to be transmitted in the next transmission period.

In some embodiments, the second indication information is a reflective QoS indicator RQI with a value of 0.

In some embodiments, extracting the second indication information from the second QER information associated with the SDF sent by the SMF entity comprises: and after receiving the second QER information sent by the SMF entity through a second signaling through a preset interface, extracting the second indication information from the second QER information.

In some embodiments, the second signaling includes PFCP modification signaling.

In some embodiments, the preset interface is an N4 interface disposed between the SMF entity and the UPF entity.

According to a second aspect of embodiments of the present disclosure, there is provided a user plane function, UPF, entity comprising: the first processing module is configured to extract first indication information and a parameter value p of a periodic reflection parameter from first QoS execution rule QER information which is sent by a session management function SMF entity and is associated with a preset service data flow SDF; and the second processing module is configured to send p downlink data packets to be sent, which belong to the SDF, to the wireless access network equipment in each sending period, wherein first indication information is added for the 1 st downlink data packet to be sent in the p downlink data packets to be sent.

According to a third aspect of embodiments of the present disclosure, there is provided a user plane function, UPF, entity comprising: a memory configured to store instructions; a processor coupled to the memory, the processor configured to perform a method according to any of the embodiments described above based on instructions stored in the memory.

According to a fourth aspect of embodiments of the present disclosure, there is provided a communication system comprising: a UPF entity as in any of the embodiments above; the SMF entity is configured to configure a parameter value p of a periodic reflection parameter for a preset service data flow SDF and send first QER information associated with the SDF to the UPF entity under the condition that periodic reflection QoS service is required, wherein the first QER information comprises first indication information and the parameter value p of the periodic reflection parameter; and the wireless access network equipment is configured to perform QoS guarantee on the downlink data if the downlink data packet belongs to the SDF and the first indication information is added after receiving the downlink data packet sent by the UPF entity, and perform reflection QoS guarantee on the downlink data packet which belongs to the SDF and is received subsequently under the condition that the first indication information is not added to the downlink data packet which belongs to the SDF.

In some embodiments, the first indication information is a reflective QoS indicator RQI with a value of 1.

In some embodiments, the SMF entity is configured to send the first QER information to the UPF entity using first signaling over a preset interface.

In some embodiments, the first signaling includes packet forwarding control protocol, PFCP, creation signaling or PFCP modification signaling.

In some embodiments, the SMF entity is configured to send second QER information associated with the SDF to the UPF entity if termination of periodic reflected QoS traffic is required, wherein the second QER information includes second indication information; and after receiving the downlink data packet sent by the UPF entity, if the downlink data packet belongs to the SDF and the second indication information is added, stopping QoS guarantee on the downlink data packet, and stopping reflection QoS guarantee on the downlink data packet which is received subsequently and belongs to the SDF.

In some embodiments, the second indication information is a reflective QoS indicator RQI with a value of 0.

In some embodiments, the SMF entity is configured to send the second QER information to the UPF entity using second signaling over a preset interface.

In some embodiments, the second signaling includes PFCP modification signaling.

In some embodiments, the above system further comprises a user terminal, wherein the radio access network device is configured to send the received downlink data packet to the corresponding user terminal; and the user terminal is configured to, after receiving the downlink data packet sent by the radio access network device, perform QoS guarantee on the downlink data packet if the downlink data packet belongs to the SDF and the first indication information is added, and perform reflection QoS guarantee on the downlink data packet which belongs to the SDF and is subsequently received if the first indication information is not added to the downlink data packet which belongs to the SDF.

In some embodiments, the ue is configured to stop QoS guarantee for the downlink data packet and stop reflective QoS guarantee for a subsequently received downlink data packet belonging to the SDF if the downlink data packet belongs to the SDF and the second indication information is added.

In some embodiments, the preset interface is an N4 interface disposed between the SMF entity and the UPF entity.

According to a fifth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium, wherein the computer readable storage medium stores computer instructions which, when executed by a processor, implement a method as in any of the embodiments described above.

Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a flow diagram of a method for controlling reflected QoS according to one embodiment of the present disclosure;

FIG. 2 is a schematic diagram of QER information of one embodiment of the present disclosure;

FIG. 3 is a flow diagram of a method for controlling reflected QoS in accordance with another embodiment of the present disclosure;

FIG. 4 is a schematic diagram of QER information of another embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a UPF entity of one embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a UPF entity in accordance with another embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a communication system according to another embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a communication system according to still another embodiment of the present disclosure.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Fig. 1 is a flow diagram of a method for controlling reflected QoS according to one embodiment of the present disclosure. In some embodiments, the following method for controlling reflected QoS is performed by a UPF entity.

In step 101, first indication information and a parameter value p of the periodic reflection parameter are extracted from first QER information associated with a preset SDF sent by an SMF (Session Management Function ) entity.

For example, the first QER information is as shown in fig. 2.

In some embodiments, after receiving the first QER information sent by the SMF entity through the first signaling through the preset interface, the first indication information and the parameter value p of the periodic reflection parameter are extracted from the first QER information.

The preset interface is, for example, an N4 interface provided between the SMF entity and the UPF entity.

For example, the first signaling includes PFCP (Packet Forwarding Control Protocol ) creation signaling or PFCP modification signaling.

In some embodiments, the first indication information is RQI with a value of 1, i.e. rqi=1.

For example, the value of the parameter p is 5.

In step 102, in each transmission period, p downlink data packets to be transmitted belonging to the SDF are transmitted to the radio access network device, where first indication information is added for the 1 st downlink data packet to be transmitted in the p downlink data packets to be transmitted.

That is, each transmission period includes p downlink data packets to be transmitted, which belong to the SDF, wherein the 1 st downlink data packet to be transmitted adds the first indication information. Namely, among a plurality of downlink data packets to be transmitted belonging to the SDF, the 1 st downlink data packet, the 1+p th downlink data packet, the 1+2p downlink data packet, the …, and the 1+np downlink data packet add the first indication information, n is a natural number, and the other downlink data packets do not add the first indication information. Therefore, after receiving the downlink data packet added with the first indication information, the wireless access network equipment performs reflection QoS guarantee on the subsequently received downlink data packet belonging to the SDF. Therefore, continuous reflection QoS guarantee is not required to be realized under the condition that RQI information is added to each downlink data packet belonging to the specified SDF, so that signaling overhead is effectively reduced, and the transmission efficiency of a network is improved.

Fig. 3 is a flow diagram of a method for controlling reflected QoS according to another embodiment of the present disclosure. In some embodiments, the following method for controlling reflected QoS is performed by a UPF entity.

In step 301, second indication information is extracted from second QER information associated with the SDF sent by the SMF entity.

For example, the second QER information is as shown in fig. 4.

In some embodiments, the second indication information is extracted from the second QER information after receiving the second QER information sent by the SMF entity through the second signaling through the preset interface.

The preset interface is, for example, an N4 interface provided between the SMF entity and the UPF entity.

For example, the second signaling includes PFCP modification signaling.

In some embodiments, the second indication information is that the value of the reflective QoS indicator RQI is 0, i.e. rqi=0.

In step 302, second indication information is added for downstream data packets to be sent belonging to the SDF.

In some embodiments, the second indication information is added for the currently to be sent downstream packet belonging to the SDF.

That is, if the downlink packet to be currently transmitted is the kth downlink packet in the jth transmission period after receiving the second QER information, the second indication information is directly added to the downlink packet k.

In some embodiments, the 1 st downstream data packet to be transmitted in the next transmission period adds the second indication information.

That is, if the downlink data packet to be transmitted currently is the kth downlink data packet in the jth transmission period after receiving the second QER information, the kth downlink data packet and other downlink data packets in the jth transmission period are transmitted in a normal manner. In the j+1th transmission period, second indication information is added for the 1 st downlink data packet to be transmitted.

In step 303, the downlink data packet to which the second indication information is added is sent to the radio access network device, so that the radio access network device stops performing the reflective QoS guarantee on the downlink data packet belonging to the SDF.

Fig. 5 is a schematic diagram of a UPF entity of one embodiment of the present disclosure. As shown in fig. 5, the UPF entity includes a first processing module 51 and a second processing module 52.

The first processing module 51 is configured to extract the first indication information and the parameter value p of the periodic reflection parameter from the first QER information associated with the preset SDF sent by the SMF entity.

For example, the first QER information is as shown in fig. 2.

In some embodiments, the first processing module 51 extracts the first indication information and the parameter value p of the periodic reflection parameter from the first QER information after receiving the first QER information sent by the SMF entity through the first signaling through the preset interface.

The preset interface is, for example, an N4 interface provided between the SMF entity and the UPF entity.

For example, the first signaling includes PFCP (Packet Forwarding Control Protocol ) creation signaling or PFCP modification signaling.

In some embodiments, the first indication information is RQI with a value of 1, i.e. rqi=1.

For example, the value of the parameter p is 5.

The second processing module 52 is configured to send p downlink data packets to be sent, which belong to the SDF, to the radio access network device in each sending period, where the first indication information is added for the 1 st downlink data packet to be sent of the p downlink data packets to be sent.

Therefore, after receiving the downlink data packet added with the first indication information, the wireless access network equipment performs reflection QoS guarantee on the subsequently received downlink data packet belonging to the SDF. Therefore, continuous reflection QoS guarantee is not required to be realized under the condition that RQI information is added to each downlink data packet belonging to the specified SDF, so that signaling overhead is effectively reduced, and the transmission efficiency of a network is improved.

In some embodiments, the first processing module 51 extracts the second indication information from the second QER information associated with the SDF sent by the SMF entity.

For example, the second QER information is as shown in fig. 4.

In some embodiments, the first processing module 51 extracts the second indication information from the second QER information after receiving the second QER information sent by the SMF entity through the second signaling through the preset interface.

The preset interface is, for example, an N4 interface provided between the SMF entity and the UPF entity.

For example, the second signaling includes PFCP modification signaling.

In some embodiments, the second indication information is that the value of the reflective QoS indicator RQI is 0, i.e. rqi=0.

The second processing module 52 adds second indication information to the downlink data packet to be sent belonging to the SDF, and sends the downlink data packet to which the second indication information is added to the radio access network device, so that the radio access network device stops performing the reflective QoS guarantee on the downlink data packet belonging to the SDF.

In some embodiments, the second processing module 52 adds second indication information for the currently to be sent downstream packet belonging to the SDF.

In some embodiments, the second processing module 52 adds second indication information for the 1 st downstream data packet to be transmitted in the next transmission cycle.

Fig. 6 is a schematic diagram of a UPF entity according to another embodiment of the present disclosure. As shown in fig. 6, the UPF entity includes a memory 61 and a processor 62.

The memory 61 is for storing instructions and the processor 62 is coupled to the memory 61, the processor 62 being configured to perform a method as referred to in any of the embodiments of fig. 1 or 3 based on the instructions stored by the memory.

As shown in fig. 6, the UPF entity also includes a communication interface 63 for information interaction with other devices. Meanwhile, the UPF entity further includes a bus 64, and the processor 62, the communication interface 63, and the memory 61 communicate with each other via the bus 34.

The memory 61 may comprise a high-speed RAM memory or may further comprise a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 61 may also be a memory array. The memory 61 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules.

Further, the processor 62 may be a central processing unit CPU, or may be an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present disclosure.

The present disclosure also relates to a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement a method as referred to in any of the embodiments of fig. 1 or 3.

Fig. 7 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. As shown in fig. 7, the communication system includes an SMF entity 71, a UPF entity 72, and a RAN device 73. The UPF entity 72 is a UPF entity involved in any of the embodiments of fig. 5 or 6.

The SMF entity 71 is configured to configure a parameter value p of a periodic reflection parameter for a preset SDF in case periodic reflection QoS traffic is required, and send first QER information associated with the SDF to the UPF entity 72, wherein the first QER information includes first indication information and the parameter value p of the periodic reflection parameter.

In some embodiments, the first indication information is that the value of the reflective QoS indicator RQI is 1, i.e. rqi=1.

In some embodiments, the SMF entity is configured to send the first QER information to the UPF entity using the first signaling over the preset interface.

For example, the first signaling includes packet forwarding control protocol, PFCP, creation signaling or PFCP modification signaling.

The preset interface is, for example, an N4 interface provided between the SMF entity and the UPF entity.

The RAN device 73 is configured to, after receiving the downlink data packet sent by the UPF entity, perform QoS guarantee on the downlink data packet if the downlink data packet belongs to the SDF and the first indication information is added, and perform reflection QoS guarantee on the downlink data packet that belongs to the SDF and is received subsequently if the first indication information is not added to the downlink data packet that belongs to the SDF.

In some embodiments, the SMF entity 71 sends second QER information associated with the SDF to the UPF entity 72 in the event that termination of periodic reflected QoS traffic is required, wherein the second QER information includes second indication information.

In some embodiments, the second indication information is that the value of the reflective QoS indicator RQI is 0, i.e. rqi=0.

In some embodiments, the SMF entity 71 sends the second QER information to the UPF entity 72 via a preset interface using second signaling.

For example, the second signaling includes PFCP modification signaling.

The preset interface is, for example, an N4 interface provided between the SMF entity and the UPF entity.

The RAN device 73 is configured to, after receiving the downlink data packet sent by the UPF entity, stop QoS guarantee on the downlink data packet if the downlink data packet belongs to the SDF and adds the second indication information, and stop reflection QoS guarantee on the downlink data packet that belongs to the SDF and is subsequently received.

Fig. 8 is a schematic structural diagram of a communication system according to another embodiment of the present disclosure. Fig. 8 differs from fig. 7 in that in the embodiment shown in fig. 8 the communication system further comprises a user terminal 74.

The RAN device 73 is configured to send the received downlink data packet to the corresponding user terminal 74.

The user terminal 74 is configured to, after receiving the downlink data packet sent by the RAN device 73, perform QoS guarantee on the downlink data packet if the downlink data packet belongs to the SDF and the first indication information is added, and perform reflection QoS guarantee on the downlink data packet that belongs to the SDF and is received subsequently if the first indication information is not added to the downlink data packet that belongs to the SDF.

In some embodiments, the user terminal 74 is configured to stop QoS securing the downstream data packet and stop reflecting QoS securing the downstream data packet that is received subsequently and belongs to the SDF if the downstream data packet belongs to the SDF and the second indication information is added.

Fig. 9 is a schematic structural diagram of a communication system according to still another embodiment of the present disclosure. One specific implementation scenario of the present disclosure is given in fig. 9, where DN is a data network and AMF entity is an access and mobility management entity.

Example 1

1) Under the condition that periodic reflection QoS service is required, the SMF entity configures a parameter value p of a periodic reflection parameter for a preset SDF, and sends first QER information associated with the SDF to the UPF entity, wherein the first QER information comprises first indication information and the parameter value p of the periodic reflection parameter.

2) The UPF entity extracts the first indication information and the parameter value p of the periodic reflection parameter from the first QER information.

3) And the UPF entity transmits p downlink data packets to be transmitted, which belong to the SDF, to the RAN equipment in each transmission period, wherein first indication information is added for the 1 st downlink data packet to be transmitted in the p downlink data packets to be transmitted.

Namely, among a plurality of downlink data packets to be transmitted belonging to the SDF, the 1 st downlink data packet, the 1+p th downlink data packet, the 1+2p downlink data packet, the …, and the 1+np downlink data packet add the first indication information, n is a natural number, and the other downlink data packets do not add the first indication information. .

4) And the RAN equipment transmits the received downlink data packet to the corresponding user terminal.

After receiving the downlink data packet, if the downlink data packet belongs to the SDF and adds the first indication information, the RAN device and the user terminal perform QoS guarantee on the downlink data, and if the subsequently received downlink data packet belonging to the SDF does not add the first indication information, the RAN device and the user terminal perform reflection QoS guarantee on the subsequently received downlink data packet belonging to the SDF.

Example 2

1) The SMF entity sends second QER information associated with the SDF to the UPF entity in the event that the periodic reflection QoS traffic needs to be terminated. The second QER information includes second indication information.

2) The UPF entity extracts the second indication information from the second QER information.

3) The UPF entity adds second indication information for the downlink data packet to be sent belonging to the SDF, and sends the downlink data packet added with the second indication information to the RAN equipment.

In some embodiments, the UPF entity adds second indication information for the currently to be sent downstream packet belonging to the SDF.

In some embodiments, the UPF entity adds the second indication information to the 1 st downstream packet to be transmitted in the next transmission cycle.

4) And the RAN equipment transmits the received downlink data packet to the corresponding user terminal.

After receiving the downlink data packet, if the downlink data packet belongs to the SDF and the second indication information is added, the RAN device and the user terminal stop performing QoS guarantee on the downlink data packet, and stop performing reflective QoS guarantee on the downlink data packet which belongs to the SDF and is subsequently received.

In some embodiments, the functional units described above may be implemented as general-purpose processors, programmable logic controllers (Programmable Logic Controller, abbreviated as PLCs), digital signal processors (Digital Signal Processor, abbreviated as DSPs), application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASICs), field programmable gate arrays (Field-Programmable Gate Array, abbreviated as FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof for performing the functions described in the present disclosure.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (25)

1. A method for controlling reflected QoS, performed by a user plane function, UPF, entity, comprising:

extracting first indication information and a parameter value p of a periodic reflection parameter from first QoS execution rule QER information which is sent by a session management function SMF entity and is associated with a preset service data flow SDF;

and in each transmission period, transmitting p downlink data packets to be transmitted, which belong to the SDF, to wireless access network equipment, wherein first indication information is added for the 1 st downlink data packet to be transmitted in the p downlink data packets to be transmitted.

2. The method of claim 1, wherein,

the first indication information is that the value of the reflection QoS indicator RQI is 1.

3. The method of claim 1, wherein extracting the first indication information and the parameter value p of the periodic reflection parameter from the first QoS execution rule QER information associated with the preset service data flow SDF sent by the session management function SMF entity comprises:

and after receiving the first QER information sent by the SMF entity through a first signaling through a preset interface, extracting the first indication information and the parameter value p of the periodic reflection parameter from the first QER information.

4. The method of claim 3, wherein,

the first signaling includes Packet Forwarding Control Protocol (PFCP) creation signaling or PFCP modification signaling.

5. The method of claim 1, further comprising:

extracting second indication information from second QER information associated with the SDF sent by the SMF entity;

adding the second indication information for the downlink data packet to be sent, which belongs to the SDF;

and sending the downlink data packet added with the second indication information to wireless access network equipment.

6. The method of claim 5, wherein adding the second indication information for the downstream data packet to be sent belonging to the SDF comprises:

and adding the second indication information for the downlink data packet to be sent currently belonging to the SDF.

7. The method of claim 5, wherein adding the second indication information for the downstream data packet to be sent belonging to the SDF comprises:

and adding the second indication information to the 1 st downlink data packet to be transmitted in the next transmission period.

8. The method of claim 5, wherein,

the second indication information is that the value of the reflection QoS indicator RQI is 0.

9. The method of claim 5, wherein extracting second indication information from second QER information associated with the SDF sent by the SMF entity comprises:

and after receiving the second QER information sent by the SMF entity through a second signaling through a preset interface, extracting the second indication information from the second QER information.

10. The method of claim 9, wherein,

the second signaling includes PFCP modification signaling.

11. The method according to claim 3 or 9, wherein,

the preset interface is an N4 interface arranged between the SMF entity and the UPF entity.

12. A user plane function, UPF, entity comprising:

the first processing module is configured to extract first indication information and a parameter value p of a periodic reflection parameter from first QoS execution rule QER information which is sent by a session management function SMF entity and is associated with a preset service data flow SDF;

and the second processing module is configured to send p downlink data packets to be sent, which belong to the SDF, to the wireless access network equipment in each sending period, wherein first indication information is added for the 1 st downlink data packet to be sent in the p downlink data packets to be sent.

13. A user plane function, UPF, entity comprising:

a memory configured to store instructions;

a processor coupled to the memory, the processor configured to perform the method of any of claims 1-11 based on instructions stored by the memory.

14. A communication system, comprising:

the UPF entity of claim 12 or 13;

the SMF entity is configured to configure a parameter value p of a periodic reflection parameter for a preset service data flow SDF and send first QER information associated with the SDF to the UPF entity under the condition that periodic reflection QoS service is required, wherein the first QER information comprises first indication information and the parameter value p of the periodic reflection parameter;

and the wireless access network equipment is configured to perform QoS guarantee on the downlink data if the downlink data packet belongs to the SDF and the first indication information is added after receiving the downlink data packet sent by the UPF entity, and perform reflection QoS guarantee on the downlink data packet which belongs to the SDF and is received subsequently under the condition that the first indication information is not added to the downlink data packet which belongs to the SDF.

15. The system of claim 14, wherein,

the first indication information is that the value of the reflection QoS indicator RQI is 1.

16. The system of claim 14, wherein,

the SMF entity is configured to send the first QER information to the UPF entity using a first signaling over a preset interface.

17. The system of claim 15, wherein,

the first signaling includes Packet Forwarding Control Protocol (PFCP) creation signaling or PFCP modification signaling.

18. The system of claim 14, wherein,

the SMF entity is configured to send second QER information associated with the SDF to the UPF entity if termination of periodic reflective QoS traffic is required, wherein the second QER information includes second indication information;

and after receiving the downlink data packet sent by the UPF entity, if the downlink data packet belongs to the SDF and the second indication information is added, stopping QoS guarantee on the downlink data packet, and stopping reflection QoS guarantee on the downlink data packet which is received subsequently and belongs to the SDF.

19. The system of claim 18, wherein,

the second indication information is that the value of the reflection QoS indicator RQI is 0.

20. The system of claim 18, wherein,

the SMF entity is configured to send the second QER information to the UPF entity using second signaling over a preset interface.

21. The system of claim 20, wherein,

the second signaling includes PFCP modification signaling.

22. The system of claim 14, further comprising a user terminal, wherein,

the wireless access network device is configured to send the received downlink data packet to the corresponding user terminal;

and the user terminal is configured to, after receiving the downlink data packet sent by the radio access network device, perform QoS guarantee on the downlink data packet if the downlink data packet belongs to the SDF and the first indication information is added, and perform reflection QoS guarantee on the downlink data packet which belongs to the SDF and is subsequently received if the first indication information is not added to the downlink data packet which belongs to the SDF.

23. The system of claim 22, wherein,

and if the downlink data packet belongs to the SDF and the second indication information is added, the user terminal is configured to stop QoS guarantee on the downlink data packet and stop reflection QoS guarantee on the downlink data packet which is received subsequently and belongs to the SDF.

24. The system of claim 16 or 20, wherein,

the preset interface is an N4 interface arranged between the SMF entity and the UPF entity.

25. A non-transitory computer readable storage medium storing computer instructions which, when executed by a processor, implement the method of any one of claims 1-11.