WO2018068622A1 - Method and apparatus for changing qos of ip flow - Google Patents

Abstract

Provided in the present disclosure are a method and an apparatus for changing QoS of an IP flow. The method comprises: a control plane function receiving a first message sent by a wireless access network; the control plane function being capable of determining whether to change QoS of an IP flow according to the first message.

Description

Method and device for changing QoS of IP flow

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201610884215.3, filed on Oct. 10, 2016, the entire content of

Technical field

The present disclosure relates to the field of communications technologies, and in particular, to a method and apparatus for changing QoS (Quality of Service) of an IP flow.

Background technique

In the flow-based QoS control mechanism, the Flow Priority Indicator (FPI) indicates that the user plane function and the access network function handle the priority of one stream. The corresponding scheduling priority also includes information such as the guaranteed bit rate and/or the maximum bit rate of the IP stream, the packet delay and the packet error rate.

The flow-based QoS control mechanism is shown in Figure 1.

Step 1. The process of establishing a PDU session between the UE and the data network.

Step 2: The control plane function (control plane function) receives a QoS request from an AF (application function), a UP function (user plane function), or a UE.

Step 2a: The AF function sends an AF QoS request to the CP function, where the message includes a stream descriptor and a stream bit rate.

Step 2b: The UP function monitors a new flow that requires specific QoS processing, and sends a QoS request to the CP function, where the message carries the flow descriptor and the application identifier.

Step 2c: The UE sends a UE QoS request to the CP function, where the message includes the flow descriptor and the QoS requested by the UE.

Step 3: The CP function determines the authorized QoS according to the operator's requirement, and sends the authorized QoS to the UP function. The authorized QoS includes uplink and downlink descriptors, flow priority hints, downlink maximum stream bit rate, downlink session bit rate, and reflected QoS hints.

Step 4: The CP function sends the authorized QoS to the AN, including uplink and downlink descriptors, and the flow priority Level hint, stream priority, uplink maximum stream bit rate, uplink and downlink guarantee stream bit rate, uplink session bit rate.

Step 5: The network may send the authorized QoS information to the UE, including an uplink descriptor, a stream priority prompt, and an uplink guarantees a stream bit rate.

Step 6. The AN sends an authorization QoS confirmation message to the CP function.

Step 7. The UP function sends an authorization QoS confirmation message to the CP function.

In the related art method, once the FPI of the IP flow is determined, the quality of service provided for the IP flow cannot be dynamically adjusted according to the condition of the network (eg, the load status of the wireless access network, the degree of congestion of the gateway).

Summary of the invention

In view of the above technical problem, some embodiments of the present disclosure provide a method and apparatus for changing QoS of an IP flow, and after the FPI of the IP flow is determined in the related art, the QoS provided for the IP flow cannot be dynamically adjusted according to the condition of the network. The problem.

According to some embodiments of the present disclosure, there is also provided a method for changing QoS of an IP flow, comprising:

The control plane function receives the first message sent by the radio access network;

The control plane function determines whether to change the QoS of the IP flow according to the first message.

Optionally, the first message is sent by the radio access network to the control plane function when the radio access network determines to change the QoS of the IP flow according to the network condition.

Optionally, the first message includes information about an IP flow and/or status information of a wireless access network.

Optionally, if the control plane function allows to change the QoS of the IP flow, the method further includes:

The control plane function obtains the QoS of the updated IP flow according to the message parameter and/or the subscription information corresponding to the first message; or

The control plane function interacts with the policy control plane function to obtain the QoS of the updated IP flow, and the QoS of the updated IP flow is determined by the policy control plane function according to the message parameter corresponding to the first message and/or Or sign up for information.

Optionally, the method further includes:

The control plane function sends the QoS of the updated IP flow to the user plane function, the radio access network, or the UE.

Optionally, if the control plane function refuses to change the QoS of the IP flow, the method further includes:

The control plane function returns a second message, the second message including a reject parameter.

According to some embodiments of the present disclosure, there is also provided a method for changing QoS of an IP flow, comprising:

When the radio access network determines to change the QoS of the IP flow according to the network condition, the radio access network sends a third message to the control plane function;

The radio access network receives a fourth message returned by the control plane function, and the fourth message is obtained by the control plane function determining, according to the third message, whether the QoS of the IP flow needs to be changed.

Optionally, if the fourth message includes the QoS of the updated IP stream, the method further includes:

The radio access network sends the QoS of the updated IP flow to the UE or user plane function.

According to some embodiments of the present disclosure, there is also provided an apparatus for changing a QoS of an IP flow, comprising:

a first receiving module, configured to receive a first message sent by the radio access network;

And a determining module, configured to determine, according to the first message, whether to change a QoS of the IP flow.

Optionally, the first message is sent by the radio access network to the control plane function when the radio access network determines to change the QoS of the IP flow according to the network condition.

Optionally, the first message includes information about an IP flow and/or status information of a wireless access network.

Optionally, the device further includes:

a first acquiring module, configured to obtain, according to a message parameter and/or subscription information corresponding to the first message, a QoS of the updated IP stream; or

a second acquiring module, configured to interact with a policy control plane function to obtain a QoS of the updated IP flow, where the QoS of the updated IP flow is determined by the policy control plane function according to a message parameter corresponding to the first message And/or signing information obtained.

Optionally, the device further includes:

The first sending module is configured to send the QoS of the updated IP stream to the user plane function, the radio access network, or the UE.

Optionally, the device further includes:

And a rejecting module, configured to return a second message if the control plane function refuses to change the QoS of the IP flow, where the second message includes a reject parameter.

According to some embodiments of the present disclosure, there is also provided an apparatus for changing a QoS of an IP flow, comprising:

a second sending module, configured to send a third message to the control plane function when the radio access network determines to change the QoS of the IP flow according to the network condition;

a second receiving module, configured to receive a fourth message returned by the control plane function, where the fourth message is a control The surface function is determined according to the third message whether it is necessary to change the QoS of the IP stream.

Optionally, if the fourth message includes the QoS of the updated IP stream, the device further includes:

The third sending module is configured to send the QoS of the updated IP flow to the UE or the user plane function.

According to some embodiments of the present disclosure, there is also provided an apparatus for changing a QoS of an IP flow, including a processor, a transceiver, and a memory;

The processor is configured to read a program in the memory and perform the following process:

Receiving a first message sent by the radio access network;

Determining whether to change the QoS of the IP flow according to the first message;

The transceiver is configured to receive and transmit data;

The memory is used to store data used by the processor to perform operations.

According to some embodiments of the present disclosure, there is also provided an apparatus for changing a QoS of an IP flow, including a processor, a transceiver, and a memory;

The processor is configured to read a program in the memory and perform the following process:

Sending a third message to the control plane function when determining the QoS of changing the IP flow according to the network condition;

Receiving a fourth message returned by the control plane function, where the fourth message is obtained by the control plane function determining, according to the third message, whether the QoS of the IP flow needs to be changed;

The transceiver is configured to receive and transmit data;

The memory is used to store data used by the processor to perform operations.

One technical solution in the foregoing technical solution has the following advantages or advantages: the control plane function can determine whether to change the QoS of the IP flow according to the request of the radio access network, and dynamically change the QoS of the IP flow under the request of the radio access network. It is avoided that once the FPI of the IP flow is determined in the related art, the problem of QoS provided for the IP flow cannot be dynamically adjusted according to the condition of the network (for example, the load status of the radio access network and the degree of congestion of the gateway).

DRAWINGS

1 is a schematic diagram of a flow-based QoS control mechanism in the related art;

2 is a flow chart of a method of changing QoS of an IP flow in some embodiments of the present disclosure;

3 is a flow chart of a method of changing QoS of an IP flow in some embodiments of the present disclosure;

4 is a flow diagram of a wireless access network requesting a change to a QoS provided by a user in some embodiments of the present disclosure;

5 is a flow chart of a UE requesting a network to change a QoS of an application in some embodiments of the present disclosure.

6 is a flowchart of a control plane function interacting with a wireless access network to acquire state information according to some embodiments of the present disclosure;

7 is a flowchart of obtaining a QoS of an updated IP flow by interacting with a control plane function and a policy control plane function in some embodiments of the present disclosure;

8 is a flow diagram of a radio access network requesting a change to a QoS provided by a user in some embodiments of the present disclosure.

9 is an apparatus for changing QoS of an IP flow in some embodiments of the present disclosure;

Figure 10 is an apparatus for changing the QoS of an IP flow in some embodiments of the present disclosure.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

Those skilled in the art will appreciate that embodiments of the present disclosure may be implemented as a system, apparatus, device, method, or computer program product. Thus, embodiments of the present disclosure may be embodied in the form of full hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

Referring to FIG. 2, a flow of a method for changing the QoS of an IP flow is shown. The specific steps are as follows:

Step 201: The control plane function receives a first message sent by the radio access network.

It should be noted that the above control plane functions may also be referred to as a control plane function entity, a control plane network function, and a control plane network function entity.

The above-mentioned radio access network specifically refers to a radio access device to which the UE is connected, such as an eNB, a 5G new radio access device, and the like.

Step 202: The control plane function determines, according to the first message, whether to change the QoS of the IP flow.

In some embodiments of the present disclosure, optionally, the first message is that the radio access network (also referred to as a RAN) determines to change the QoS of the IP flow according to the network condition, and the radio access network is located by the radio access network. The control plane function transmission, that is, the RAN makes a decision to change the QoS according to the network condition, sends related information (such as network status, etc.) to the control plane function, and the control plane function makes a QoS decision and returns to the RAN; The QoS of the updated IP flow may be sent to the UE or the UP GW (or called the user plane function), wherein the UP GW may send a QoS Update Confirm message to the control plane function, and the control plane function returns an acknowledgement message to the UP GW. For example, if the value of the FPI (Flow Priority Indicator) of an IP flow of the UE is 1, the RAN discovery can provide a higher quality of service for the UE, because the data transmission of some users ends, and the load of the RAN is reduced. The RAN decides to increase the FPI value of the above IP flow of the UE to 2 according to the current load status. The RAN initiates the process of QoS change. In some embodiments of the present disclosure, the FPI value 1 represents a low scheduling priority, and the FPI value 2 represents a medium scheduling priority. Of course, it should be noted that the specific value of the FPI value is not limited in some embodiments of the present disclosure. .

In some embodiments of the present disclosure, optionally, the first message includes information of an IP flow and/or status information of a wireless access network. Further, the first message may further include information of a data transmission path, such as a radio bearer identifier.

Further, in some embodiments of the present disclosure, optionally, if the control plane function allows to change the QoS of the IP flow, the method further includes:

The control plane function obtains the QoS of the updated IP flow according to the message parameter and/or the subscription information corresponding to the first message; or

The control plane function interacts with the policy control plane function to obtain the QoS of the updated IP flow, and the QoS of the updated IP flow is determined by the policy control plane function according to the message parameter corresponding to the first message and/or Or sign up for information.

Further, in some embodiments of the present disclosure, optionally, the method further includes:

The control plane function sends the QoS of the updated IP flow to the user plane function, the radio access network, or the UE. That is, after receiving the request message, the control plane network function formulates a new QoS according to the message parameters and the subscription information, and then delivers the QoS to the user plane entity (for example, the user plane gateway, the access device in the radio access network) and the UE. The user plane entity provides new QoS guarantees for the user's data stream based on the new QoS.

Further, in some embodiments of the present disclosure, optionally, if the control plane function refuses to change the QoS of the IP flow, the method further includes:

The control plane function returns a second message, the second message including a reject parameter.

In some embodiments of the present disclosure, the control plane function may determine whether to change the QoS of the IP flow according to the request of the radio access network, and dynamically change the QoS of the IP flow under the request of the radio access network, so as to avoid determining once the related technology After the FPI of the IP stream, the problem of QoS provided for the IP stream cannot be dynamically adjusted according to the condition of the network (for example, the load status of the radio access network and the degree of congestion of the gateway).

Referring to FIG. 3, a flow of a method for changing the QoS of an IP flow is shown. The specific steps are as follows:

Step 301: When the radio access network determines to change the QoS of the IP flow according to the network condition, the radio access network sends a third message to the control plane function.

In some embodiments of the present disclosure, optionally, the third message includes information of an IP flow and/or status information of the wireless access network. Further, the third message may further include information of a data transmission path, such as a radio bearer identifier.

Step 302: The radio access network receives a fourth message returned by the control plane function, where the fourth message is obtained by the control plane function determining, according to the third message, whether the QoS of the IP flow needs to be changed.

In some embodiments of the present disclosure, optionally, the fourth message may include a QoS of the updated IP flow or a rejection parameter that refuses to change the QoS of the IP flow, and is of course not limited thereto.

Further, in some embodiments of the present disclosure, optionally, if the fourth message includes the QoS of the updated IP stream, the method further includes:

The radio access network sends the QoS of the updated IP flow to the UE or user plane function.

In some embodiments of the present disclosure, a radio access network (also referred to as a RAN) may make a decision to change QoS according to network conditions, send related information (eg, network status, etc.) to a control plane function, and control plane functions to make QoS Deciding to return to the RAN; then the RAN may send the QoS of the updated IP flow to the UE or the UP GW (or called the user plane function), wherein the UP GW may send a QoS update confirmation message to the control plane function, and the control plane function is The UP GW returns a confirmation message.

In some embodiments of the present disclosure, the QoS of the IP flow is dynamically changed at the request of the radio access network, and the related information cannot be determined according to the condition of the network (for example, the radio access network) The load status and the degree of congestion of the gateway are dynamically adjusted to the problem of QoS provided by the IP flow.

In some embodiments of the present disclosure, the wireless access network requests a change to the QoS provided by the user.

A suitable scenario may be: when the wireless access network discovers that the load status of the access network changes, for example, the load reduction may provide better QoS for the existing user's data flow, and the wireless access network requests to change the QoS of the data flow. Referring to Figure 4, the specific steps are as follows:

Step 401: The radio access network determines to change certain QoS according to the network status, and the radio access network sends a first QoS update request message to the control plane function.

Optionally, the first QoS update request message includes a load status of the radio access network, and further, the first QoS update request message may further include information of the IP flow, such as a quintuple, an ID of the IP stream, and the like.

Step 402: The control plane function adjusts the QoS provided by the IP flow according to the load status of the radio access network and the subscription information of the user.

For example: change the guaranteed stream bit rate in the stream priority hint.

In some embodiments of the present disclosure, the control plane function may interact with the policy control plane function to obtain the QoS of the updated IP flow (or QoS information called the updated IP flow) from the policy control plane function. The control plane function returns a QoS update reply message to the radio access network, and the QoS update reply message carries the QoS of the updated IP flow.

Step 403: The control plane function sends a second QoS update request message to the user plane function.

The above user plane function may also be referred to as a user plane network function.

Optionally, the second QoS update request message carries the information of the IP flow and the QoS of the updated IP flow.

Step 404: The user plane function updates the QoS after receiving the second QoS update request message, and returns a QoS update confirmation.

In some embodiments of the present disclosure, the UE requests the network to change the QoS of the application.

A suitable scenario may be that the user wishes to view a higher definition video and the application layer requests to change the QoS of the application. See Figure 5, the specific steps are as follows:

Step 501: The UE sends a first QoS update request message to the control plane function.

Optionally, the first QoS update request message carries information about the IP flow (such as a quintuple, an ID of the IP flow, and the like). Further, the first QoS update request message may further carry an QoS request of the application.

Step 502: The control plane function updates the QoS according to the request of the UE and the subscription information of the UE.

For example: increase/decrease the guaranteed bit rate of IP flows.

In some embodiments of the present disclosure, the control plane function may interact with the policy control plane function to obtain the QoS of the updated IP flow from the policy control plane function. The control plane function sends a second QoS update request message to the radio access network, where the second QoS update request message carries the information of the IP flow and the QoS of the updated IP flow.

Step 503: The radio access network updates the QoS, and returns a first QoS update confirmation message to the control plane function.

Step 504: The control plane function sends a third QoS update request message to the user plane function.

Optionally, the third QoS update request message carries the information of the IP flow and the QoS of the updated IP flow.

Step 505: The user plane function returns a second QoS update confirmation message to the control plane function.

Step 506: The control plane function sends a QoS update reply message to the UE.

In some embodiments of the present disclosure, if the change in QoS is caused by an application server or subscription change, the first QoS update request message is issued by the application server or the subscription database.

The control plane function receives the QoS update request message. If the QoS update request message does not include the status information of the radio access network, the control plane function interacts with the radio access network to obtain the status information.

See Figure 6, the specific steps are as follows:

Step 601: The control plane function sends a status request message to the radio access network.

Step 602: The radio access network returns a status reply message to the control plane function, where the status reply message carries status information of the radio access network, such as a load status.

It should be noted that some technical solutions for adjusting QoS in some embodiments of the present disclosure may refer to some embodiments of the present disclosure in addition to the foregoing steps 601 and 602, and are not described herein.

If the policy control plane function is deployed in the network, it is responsible for making QoS decisions. When the control plane function receives the request to update the QoS, it interacts with the policy control plane function to obtain the QoS of the updated IP flow.

See Figure 7, the specific steps are as follows:

Step 701: The control plane function sends a QoS update request message to the policy control plane function, where the message carries the information of the IP flow, the state of the radio access network, or the QoS requested by the UE.

The policy control plane function may be formulated according to information such as the subscription information of the user or the information provided by the third party, and sent to the policy execution entity, where the policy execution entity monitors and/or controls the traffic of the UE according to the policy, and of course Not limited to this.

Step 702: The policy control plane function obtains the updated QoS according to the message parameter in the request message and the subscription information of the user, and returns the QoS of the updated IP flow to the control plane function by using the QoS update confirmation message.

In some embodiments of the present disclosure, the wireless access network requests a change to the QoS provided by the user.

A suitable scenario may be: when the wireless access network discovers that the load status of the access network changes, for example, the load reduction may provide better QoS for the existing user's data flow, and the wireless access network requests to change the QoS of the data flow.

See Figure 8, the specific steps are as follows:

Step 801: The RAN makes a decision to change the QoS according to the network condition, and sends related information to the control plane function.

The above related information may include network conditions and the like.

Step 802, the control plane function makes a QoS decision, and returns to the RAN;

The QoS decision made by the control plane function includes allowing the QoS of the IP flow to be changed or refusing to change the QoS of the IP flow. If the control plane function allows changing the QoS of the IP flow, the control plane function is based on the message parameter corresponding to the first message and / Or the subscription information obtains the QoS of the updated IP flow; or the control plane function interacts with the policy control plane function to obtain the QoS of the updated IP flow, and the QoS of the updated IP flow is determined by the policy control plane function The message parameters and/or subscription information corresponding to the first message are obtained.

Step 803: The RAN sends the QoS of the updated IP flow to the UE.

Step 804: The RAN sends the QoS of the updated IP flow to the UP GW (user plane gateway).

Step 805: The UP GW sends a QoS update confirmation message to the control plane function.

Step 806: The control plane function returns an acknowledgement message to the UP GW.

In some embodiments of the present disclosure, it is assumed that the FPI (Flow Priority Indicator) value of one IP flow of the UE is 1, and the RAN discovery may be UE due to the end of data transmission of some users. To provide higher quality of service, the RAN decides to increase the FPI value of the above IP flow of the UE to 2 according to the current load status. The RAN initiates the process of QoS change. In some embodiments of the present disclosure, the FPI value 1 represents a low scheduling priority, and the FPI value 2 represents a medium scheduling priority. Of course, it should be noted that the specific value of the FPI value is not limited in some embodiments of the present disclosure. .

Referring to Figure 9, there is shown an apparatus for changing the QoS of an IP flow, the apparatus 900 comprising:

The first receiving module 901 is configured to be used by the radio access network to send the first message.

The determining module 902 is configured to determine, according to the first message, whether to change the QoS of the IP flow.

In some embodiments of the present disclosure, optionally, the first message is sent by the radio access network to the control plane function when the radio access network determines to change the QoS of the IP flow according to the network condition.

In some embodiments of the present disclosure, optionally, the first message includes information of an IP flow and/or status information of a wireless access network.

In some embodiments of the present disclosure, optionally, the device further includes:

a first acquiring module, configured to obtain, according to a message parameter and/or subscription information corresponding to the first message, a QoS of the updated IP stream; or

a second acquiring module, configured to interact with a policy control plane function to obtain a QoS of the updated IP flow, where the QoS of the updated IP flow is determined by the policy control plane function according to a message parameter corresponding to the first message And/or signing information obtained.

In some embodiments of the present disclosure, optionally, the device further includes:

The first sending module is configured to send the QoS of the updated IP stream to the user plane function, the radio access network, or the UE.

In some embodiments of the present disclosure, optionally, the device further includes:

And a rejecting module, configured to return a second message if the control plane function refuses to change the QoS of the IP flow, where the second message includes a reject parameter.

In some embodiments of the present disclosure, the control plane function may determine whether to change the QoS of the IP flow according to the request of the radio access network, and dynamically change the QoS of the IP flow under the request of the radio access network, so as to avoid determining once the related technology After the FPI of the IP stream, the problem of QoS provided for the IP stream cannot be dynamically adjusted according to the condition of the network (for example, the load status of the radio access network and the degree of congestion of the gateway).

Referring to Figure 10, there is shown an apparatus for changing the QoS of an IP flow, the apparatus 1000 comprising:

The second sending module 1001 is configured to: when the radio access network determines to change the QoS of the IP flow according to the network condition, send a third message to the control plane function;

The second receiving module 1002 is configured to receive a fourth message returned by the control plane function, where the fourth message is obtained by the control plane function determining, according to the third message, whether the QoS of the IP flow needs to be changed.

In some embodiments of the present disclosure, optionally, if the fourth message includes QoS of the updated IP stream, the apparatus further includes:

The third sending module is configured to send the QoS of the updated IP flow to the UE or the user plane function.

In some embodiments of the present disclosure, the QoS of the IP flow is dynamically changed at the request of the radio access network, and the related information cannot be determined according to the condition of the network (for example, the radio access network) The load status and the degree of congestion of the gateway are dynamically adjusted to the problem of QoS provided by the IP flow.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" or "an" Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present disclosure. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are used interchangeably herein.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined from A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

The above is a description of some embodiments of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and refinements without departing from the principles of the present disclosure. Within the scope of protection of the present disclosure.

Claims (18)

A method of changing the QoS of an IP flow, including: The control plane function receives the first message sent by the radio access network; The control plane function determines whether to change the QoS of the IP flow according to the first message. The method of claim 1, wherein the first message is sent by the wireless access network to the control plane function when the radio access network determines to change the QoS of the IP flow according to the network condition. The method of claim 2, wherein the first message includes information of an IP flow and/or status information of a wireless access network. The method of claim 1, wherein if the control plane function allows changing the QoS of the IP flow, the method further comprises: The control plane function obtains the QoS of the updated IP flow according to the message parameter and/or the subscription information corresponding to the first message; or The control plane function interacts with the policy control plane function to obtain the QoS of the updated IP flow, and the QoS of the updated IP flow is determined by the policy control plane function according to the message parameter corresponding to the first message and/or Or sign up for information. The method of claim 4 further comprising: The control plane function sends the QoS of the updated IP flow to the user plane function, the radio access network, or the UE. The method of claim 1, wherein if the control plane function refuses to change the QoS of the IP flow, the method further comprises: The control plane function returns a second message, the second message including a reject parameter. A method of changing the QoS of an IP flow, including: When the radio access network determines to change the QoS of the IP flow according to the network condition, the radio access network sends a third message to the control plane function; The radio access network receives a fourth message returned by the control plane function, and the fourth message is obtained by the control plane function determining, according to the third message, whether the QoS of the IP flow needs to be changed. The method of claim 7, wherein if the fourth message includes QoS of the updated IP stream, the method further comprises: The radio access network sends the QoS of the updated IP flow to the UE or user plane function. A device for changing the QoS of an IP flow, comprising: a first receiving module, configured to receive a first message sent by the radio access network; And a determining module, configured to determine, according to the first message, whether to change a QoS of the IP flow. The apparatus according to claim 9, wherein the first message is that the radio access network determines to change the QoS of the IP stream according to the network condition, and is sent by the radio access network to the control plane function. The apparatus of claim 10, wherein the first message includes information of an IP flow and/or status information of a wireless access network. The apparatus of claim 9 further comprising: a first acquiring module, configured to obtain, according to a message parameter and/or subscription information corresponding to the first message, a QoS of the updated IP stream; or a second acquiring module, configured to interact with a policy control plane function to obtain a QoS of the updated IP flow, where the QoS of the updated IP flow is determined by the policy control plane function according to a message parameter corresponding to the first message And/or signing information obtained. The apparatus of claim 9 further comprising: The first sending module is configured to send the QoS of the updated IP stream to the user plane function, the radio access network, or the UE. The apparatus of claim 9 further comprising: The reject module is configured to return a second message if the control plane function refuses to change the QoS of the IP flow, and the second message includes a reject parameter. A device for changing the QoS of an IP flow, comprising: a second sending module, configured to send a third message to the control plane function when the radio access network determines to change the QoS of the IP flow according to the network condition; The second receiving module is configured to receive a fourth message returned by the control plane function, where the fourth message is obtained by the control plane function determining, according to the third message, whether the QoS of the IP flow needs to be changed. The apparatus of claim 15, wherein if the fourth message includes QoS of the updated IP stream, the apparatus further comprises: The third sending module is configured to send the QoS of the updated IP flow to the UE or the user plane function. An apparatus for changing QoS of an IP flow, including a processor, a transceiver, and a memory; The processor is configured to read a program in the memory and perform the following process: Receiving a first message sent by the radio access network; Determining whether to change the QoS of the IP flow according to the first message; The transceiver is configured to receive and transmit data; The memory is used to store data used by the processor to perform operations. An apparatus for changing QoS of an IP flow, including a processor, a transceiver, and a memory; The processor is configured to read a program in the memory and perform the following process: Sending a third message to the control plane function when determining the QoS of changing the IP flow according to the network condition; Receiving a fourth message returned by the control plane function, where the fourth message is obtained by the control plane function determining, according to the third message, whether the QoS of the IP flow needs to be changed; The transceiver is configured to receive and transmit data; The memory is used to store data used by the processor to perform operations.

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