CN115190541A

CN115190541A - Method and device for controlling service quality

Info

Publication number: CN115190541A
Application number: CN202110362696.2A
Authority: CN
Inventors: 邢玮俊; 丁辉; 吴问付
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2022-10-14

Abstract

The application provides a method for controlling service quality, which comprises the following steps: the method comprises the steps that an N3IWF receives notification control QNC information corresponding to a first QoS (quality of service) flow from a first session management network element, the first QNC information is used for indicating that notification information is sent when the QoS of the first QoS flow does not meet the QoS requirement, the first QoS flow is used for transmitting data of a first service between a first terminal device and a data network, and the first session management network element provides service for the first terminal device; and the N3IWF sends sixth QNC information to the second session management network element, wherein the sixth QNC information is used for indicating that the notification information is sent when the service quality of the first QoS flow does not meet the service quality requirement. And the N3IWF sends QNC information to a second session management network element, so that the access network equipment monitors whether the QoS meets the QoS requirement or not, and the QoS requirement of the first terminal equipment for accessing the data network is ensured.

Description

Method and device for controlling service quality

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for controlling quality of service.

Background

In order to improve the utilization rate of radio spectrum and provide cellular network services for terminals out of coverage of the cellular network, the cellular communication network introduces proximity-based services (ProSe) communication in which a User Equipment (UE) in close proximity can directly establish a communication link without forwarding the communication through a base station. In the UE-to-Network Relay architecture, a remote UE (remote UE) may establish a connection with a Radio Access Network (RAN) through a Relay device.

When a remote UE is connected to a core Network through a relay device to perform Data Network (DN) access, two communication links exist, that is, a communication link between the remote UE and the relay device and a communication link between the relay device and a RAN, where Data streams of the two links are transmitted based on quality of service (QoS) streams, currently, the RAN may monitor the communication quality of the communication link between the relay device and the RAN, and when the RAN monitors that a Uu port cannot meet a transmission requirement, the RAN may report the condition to the core Network, so that a Network element of the core Network makes an adjustment according to the condition, where the RAN relays the device communication through the Uu port. However, the RAN cannot monitor the quality of service between the remote UE and the relay device, and thus cannot guarantee the QoS requirement from the remote UE to the core network.

Disclosure of Invention

A first terminal device (remote UE) or a non-3GPP interworking function (non-3 GPP interworking function, N3 IWF) configures QoS Notification Control (QNC) information to an access network device, so that the access network device sends the condition to a session management network element of the first terminal device through different flows under the condition that the service quality requirement is found not to be met, and the session management network element of the first terminal device adjusts corresponding QoS parameters according to the condition, thereby ensuring the QoS requirement of the first terminal device for accessing a data network.

In a first aspect, a method for controlling quality of service is provided, where the method includes: the method comprises the steps that an N3IWF receives first QoS notification control QNC information corresponding to a first QoS flow from a first session management network element, wherein the first QNC information is used for indicating that notification information is sent when the QoS of the first QoS flow does not meet QoS requirements, the first QoS flow is used for transmitting data of a first service between first terminal equipment and a data network, and the first session management network element provides services for the first terminal equipment; and the N3IWF sends second QNC information to the first terminal equipment through the relay equipment, wherein the second QNC information is used for indicating that notification information is sent when the service quality of the first QoS flow does not meet the service quality requirement.

It will be appreciated that the first terminal device may be a remote UE/remote terminal which is connected to the N3IWF network element via the relay device and then performs access to the data network. The relay device may be a UE, or may also be a wireless access device, such as an access device deployed by an operator and similar to a router, which is not limited in this application.

It should also be understood that the first terminal device may use different services in one of the sessions established with the data network. Different services require different QoS parameters, for example, video services require high bandwidth, while voice communications require reliable low latency. A session management network element providing services for a first terminal device may establish different QoS flows for QoS requirements of different services according to a communication requirement of the first terminal device, that is, the first QoS flow is data of a certain service transmitted between the first terminal device and a data network.

In the method for controlling quality of service according to the embodiment of the present application, the N3IWF may send the QNC information to the first terminal device, so that the first terminal device reports the condition to the N3IWF when the quality of service of the first QoS stream does not meet the quality of service requirement, so that the core network element adjusts the corresponding QoS parameter according to the condition, thereby ensuring the quality of service requirement on the link from the first terminal device to the core network.

It should be noted that the quality of service requirement may be a bandwidth requirement, a packet loss rate, a time delay, and the like, which is not limited in this application. When the QoS of the first QoS flow does not satisfy the QoS requirement, notification information may be sent, which may be sent to a session management network element of the first terminal to make an adjustment of the QoS parameter in time.

With reference to the first aspect, in certain implementations of the first aspect, the first QNC information includes an identification of the first QoS flow; the second QNC information includes an identifier of the first QoS flow and first flow description information, where the first flow description information includes an address of the N3IWF and a Security Parameter Index (SPI) corresponding to the first QoS flow.

It should be understood that the first QNC information may further include other parameters, such as a time delay, a packet loss rate, and the like, and the present application is not limited thereto.

With reference to the first aspect, in certain implementations of the first aspect, the N3IWF receives first notification information from the first terminal device, where the first notification information is used to notify that the quality of service of the first QoS flow does not meet a quality of service requirement; and the N3IWF sends the first notification information to the first session management network element.

In this embodiment of the present application, the N3IWF receives a notification that the QoS of the first QoS stream from the first terminal device does not satisfy the QoS requirement, and then reports the condition to the first session management network element, so that the first session management network element adjusts the corresponding QoS parameter according to the condition, so as to ensure the QoS requirement for the first terminal device to access the data network.

With reference to the first aspect, in some implementations of the first aspect, the N3IWF receives, through an SPI corresponding to a first Uu port QoS flow, second notification information from the relay device, a second session management network element, or an access network device, where the second notification information is used to notify that a quality of service of the first Uu port QoS flow does not meet a quality of service requirement, the first Uu port QoS flow is used between the relay device and the access network device to transmit data of the first service for the first terminal device, the first Uu port QoS flow is a Uu port QoS flow corresponding to the first QoS flow, and the second session management network element provides a service for the relay device; and the N3IWF sends third notification information to the first session management network element according to the second notification information and the corresponding relation between the SPI and the first QoS flow, wherein the third notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

In the embodiment of the application, the N3IWF receives a notification that the QoS of the Uu port QoS stream corresponding to the first QoS stream does not satisfy the QoS requirement, determines that the QoS of the first QoS stream does not satisfy the QoS requirement according to the notification, and reports the condition to the first session management network element, so that the first session management network element adjusts the corresponding QoS parameter according to the condition to ensure the QoS requirement from the first terminal device to the data network.

In a second aspect, a method for controlling quality of service is provided, the method comprising: the first terminal equipment receives second quality of service (QoS) notification control (QNC) information from a non-3GPP interworking function (N3 IWF), wherein the second QNC information is used for indicating that notification information is sent when the QoS of a first QoS flow does not meet the QoS requirement, and the first QoS flow is used for transmitting data of a first service between the first terminal equipment and a data network; the first terminal equipment sends third QNC information to relay equipment according to the second QNC information and a first PC5 port QoS flow corresponding to the first QoS flow, wherein the third QNC information is used for indicating that notification information is sent when the service quality of a Uu port QoS flow corresponding to the first PC5 port QoS flow does not meet the service quality requirement; the first PC5 port QoS flow is used to transmit the data of the first service between the first terminal device and the relay device, and the Uu port QoS flow corresponding to the first PC5 port QoS flow is used to transmit the data of the first service between the relay device and the access network device.

It should be understood that the first PC5 port QoS flow is for data of the first service transmitted between the first terminal device and the relay device through the PC5 interface.

By the implementation method, the first terminal device maps the first QoS flow to the Uu port QoS flow through the mapping (or corresponding) relationship between the first QoS flow and the first PC5 port QoS flow and the mapping relationship between the first PC5 port QoS flow and the Uu port QoS flow, so as to judge whether the service quality of the first QoS meets the service quality requirement or not according to the service quality of the Uu port QoS flow.

With reference to the second aspect, in certain implementations of the second aspect, the second QNC information includes an identifier of the first QoS flow and second flow description information, where the second flow description information includes an address of the N3IWF and an SPI corresponding to the first QoS flow; the third QNC information includes the identifier of the first PC5 port QoS flow and third flow description information, where the third flow description information includes the address of the N3IWF and the SPI corresponding to the first PC5 port QoS flow.

It should be understood that the second QNC information and the third QNC information may further include other parameters, such as a time delay, a packet loss rate, and the like, and the present application is not limited thereto.

With reference to the second aspect, in some implementation manners of the second aspect, the first terminal device receives fourth notification information from the relay device, where the fourth notification information is used to notify that the quality of service of the Uu port QoS stream corresponding to the first PC5 port QoS stream does not meet a quality of service requirement; and the first terminal equipment sends first notification information to the N3IWF according to the fourth notification information, wherein the first notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

With reference to the second aspect, in some implementations of the second aspect, the sending, by the first terminal device, the first notification information to the N3IWF according to the fourth notification information includes: the first terminal equipment sends the first notification information to the N3IWF according to the fourth notification information and the corresponding relation between the first PC5 port QoS flow and the first QoS flow; or, the first terminal device sends the first notification information to the N3IWF through the SPI corresponding to the first QoS flow according to the fourth notification information.

Through the implementation mode, the first terminal equipment judges that the service quality of the first QoS does not meet the service quality requirement according to the message for informing that the service quality of the Uu port QoS flow does not meet the service quality requirement and the mapping relation between the first QoS flow and the Uu port QoS flow, and then reports the condition to the session management network element through the N3IWF so as to adjust the QoS parameters according to the condition and ensure the QoS requirement that the first terminal equipment accesses the data network.

With reference to the second aspect, in some implementations of the second aspect, when the first terminal device detects that the quality of service of the first PC5 port QoS stream does not meet a quality of service requirement, the first terminal device sends the first notification information to the N3 IWF; or the first terminal equipment sends fifth notification information from the relay equipment, the first terminal equipment sends the first notification information to the N3IWF according to the fifth notification information, and the fifth notification information is used for notifying that the service quality of the QoS stream of the first PC5 port does not meet the service quality requirement; wherein the first notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

By the implementation, the first terminal device may detect whether the QoS of the QoS stream of the first PC5 port corresponding to the first QoS stream meets the QoS requirement according to the first QNC information, determine that the QoS of the first QoS stream does not meet the QoS requirement if the QoS of the first QoS stream is not met, and report the condition to the session management network element through the N3IWF so as to adjust the QoS parameter according to the condition, thereby ensuring the QoS requirement of the first terminal device for accessing the data network.

With reference to the second aspect, in some implementations of the second aspect, the sending, by the first terminal device, the first notification information to the N3IWF according to the fifth notification information includes: the first terminal equipment sends the first notification information to the N3IWF according to the fifth notification information and the corresponding relation between the first PC5 port QoS flow and the first QoS flow; or the first terminal equipment sends the first notification information to the N3IWF through the SPI corresponding to the first QoS flow according to the fifth notification information.

In a third aspect, a method for controlling quality of service is provided, where the method includes: the relay equipment receives third QNC information from first terminal equipment, wherein the third QNC information is used for indicating that notification information is sent when the service quality of a Uu port QoS flow corresponding to a first PC5 port QoS flow does not meet the service quality requirement, and the first PC5 port QoS flow is used for transmitting data of a first service between the relay equipment and the first terminal equipment; and the relay equipment sends fourth QNC information to a second session management network element according to the third QNC information and the Uu port QoS flow corresponding to the first PC5 port QoS flow, where the fourth QNC information is used to indicate that notification information is sent when the quality of service of the first Uu port QoS flow does not meet the quality of service requirement, the second session management network element provides service for the relay equipment, the first Uu port QoS flow is the Uu port QoS flow corresponding to the first PC5 port QoS flow, and the first Uu port QoS flow is used to transmit data of the first service for the first terminal equipment between the relay equipment and an access network.

Through the implementation manner, when the relay device receives the third QNC information, the information is sent to the session management network element of the relay device, so that the session management network element of the relay device creates or modifies the configuration information of the QoS stream of the first Uu port to support a QoS notification control scenario.

With reference to the third aspect, in certain implementation manners of the third aspect, the third QNC information includes an identifier of the first PC5 port QoS flow and third flow description information, where the third flow description information includes an address of an N3IWF and an SPI corresponding to the first PC5 port QoS flow; the fourth QNC information includes fourth flow description information, the fourth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow, and the N3IWF is configured to transmit data of the first service to the first terminal device.

With reference to the third aspect, in some implementations of the third aspect, the third QNC information is carried in a session modification request message.

With reference to the third aspect, in certain implementations of the third aspect, the relay device receives sixth notification information from the second session management network element or an access network device, where the sixth notification information is used to notify that the quality of service of the first Uu port QoS flow does not meet a quality of service requirement; the relay device sends fourth notification information to the first terminal device according to the sixth notification information and the corresponding relationship between the identifier of the first Uu port QoS flow and the identifier of the first PC5 port QoS flow, wherein the fourth notification information is used for notifying that the service quality of the Uu port QoS flow corresponding to the first PC5 port QoS flow does not meet the service quality requirement; or the relay device sends second notification information to the N3IWF through the SPI corresponding to the first Uu port QoS stream according to the sixth notification information, where the second notification information is used to notify that the QoS of the first Uu port QoS stream does not meet the QoS requirement, and the N3IWF is used to transmit the data of the first service to the first terminal device.

In a fourth aspect, a method for controlling quality of service is provided, the method comprising: a second session management network element receives fourth QoS Notification Control (QNC) information from a relay device, wherein the fourth QNC information is used for indicating that notification information is sent when the QoS of a first Uu port QoS flow does not meet the QoS requirement, the first Uu port QoS flow is used for transmitting data of a first service for a first terminal device between the relay device and an access network device, and the second session management network element provides service for the relay device; and the second session management network element sends fifth QNC information to the access network device, where the fifth QNC information is used to indicate that notification information is sent when the QoS of the first Uu port QoS flow does not meet the QoS requirement.

With reference to the fourth aspect, in some implementations of the fourth aspect, the fourth QNC information includes fourth flow description information, and the fourth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow; the fifth QNC information includes an identifier of the first Uu port QoS flow and/or fifth flow description information, the fifth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow, and the N3IWF is configured to transmit data of the first service to the first terminal device.

Illustratively, when receiving the fourth QNC information, the second session management network element binds the fourth flow description information with the Uu port QoS flow, then configures the QNC parameter for the Uu port QoS flow, and then sends the binding relationship and the QoS configuration to the access network device, so that the access network device reports the situation according to the flow description information when detecting that the QoS of the Uu port QoS flow does not meet the QoS requirement.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second session management network element receives sixth notification information from the access network device, where the sixth notification information is used to notify that the QoS of the first Uu port QoS stream does not meet a QoS requirement; the second session management network element sends the sixth notification information to the relay device; or the second session management network element sends the second notification information to the N3IWF through the SPI corresponding to the first Uu port QoS stream according to the sixth notification information, where the second notification information is used to notify that the service quality of the first Uu port QoS stream does not meet the service quality requirement.

In a fifth aspect, a method for controlling quality of service is provided, the method including:

the access network equipment receives fifth QoS notification control QNC information from a second session management network element, wherein the fifth QNC information is used for indicating that notification information is sent when the QoS of a first Uu port QoS flow does not meet the QoS requirement, the first Uu port QoS flow is used for transmitting data of a first service for first terminal equipment between relay equipment and the access network equipment, and the second session management network element provides service for the relay equipment; when the service quality of the first Uu port QoS flow does not meet the service quality requirement, the access network device sends sixth notification information to the second session management network element or the relay device, where the sixth notification information is used to notify that the service quality of the first Uu port QoS flow does not meet the service quality requirement; or when the service quality of the first Uu port QoS flow does not meet the service quality requirement, the access network equipment sends second notification information to an N3IWF through an SPI corresponding to the first Uu port QoS, the second notification information is used for notifying that the service quality of the first Uu port QoS flow does not meet the service quality requirement, and the N3IWF is used for transmitting the data of the first service for the first terminal equipment.

Through the embodiment, the access network equipment detects the service quality of the first Uu port QoS flow, judges the service quality of the first QoS flow according to the channel quality between the access network equipment and the relay equipment, and reports the condition to different network elements or equipment when the service quality is not met, so that other network elements or equipment can process the condition in different modes.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the fifth QNC information includes an identifier of the first Uu port QoS flow and/or fifth flow description information, and the fifth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow.

In a sixth aspect, a method for controlling quality of service is provided, the method comprising: the method comprises the steps that an N3IWF receives notification control QNC information corresponding to a first QoS (quality of service) flow from a first session management network element, wherein the first QNC information is used for indicating that notification information is sent when the QoS of the first QoS flow does not meet the QoS requirement, the first QoS flow is used for transmitting data of a first service between first terminal equipment and a data network, and the first session management network element provides service for the first terminal equipment; and the N3IWF sends sixth QNC information to a second session management network element, wherein the sixth QNC information is used for indicating that notification information is sent when the service quality of a first Uu port QoS flow borne by the data of the first service does not meet the service quality requirement, and the first Uu port QoS flow is the QoS flow which is distributed by the second session management network element and used for bearing the data of the first service.

Through the implementation mode, the N3IWF sends the QNC information to the session management network element of the relay equipment connected with the first terminal equipment, so that the session management network element sends the notification information to the N3IWF when the QoS of the QoS flow carried by the first service flow does not meet the QoS, the QoS notification control scene is supported, and the QoS requirement of the first terminal equipment for accessing the data network is ensured.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the first QNC information includes an identification of the first QoS flow; the sixth QNC information includes sixth flow description information, and the sixth flow description information includes an address of the N3IWF and an SPI corresponding to the first QoS flow.

With reference to the sixth aspect, in some implementations of the sixth aspect, the sending, by the N3IWF, sixth QNC information to the second session management network element includes: the N3IWF directly sends sixth QNC information to the second session management network element; or sending the sixth QNC information to the second session management network element through the PCF and/or the NEF; or the N3IWF sends the sixth QNC information to the second session management network element through UPF; wherein the PCF and the UPF provide service for the relay device.

With reference to the sixth aspect, in some implementations of the sixth aspect, the N3IWF receives seventh notification information from the second session management network element, where the seventh notification information is used to notify that a quality of service of a first Uu port QoS flow does not meet a quality of service requirement, and the first Uu port QoS flow is used to transmit data of the first service for the first terminal device between a relay device and an access network device; the seventh notification message is received through an SPI corresponding to the first QoS flow; or the seventh notification message includes the SPI corresponding to the first QoS flow; and the N3IWF sends eighth notification information to the first session management network element according to the seventh notification information and the corresponding relationship between the SPI and the identifier of the first QoS flow, wherein the eighth notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

In a seventh aspect, a method for controlling quality of service is provided, where the method includes: a second session management network element receives sixth QoS notification control QNC information from an N3IWF, wherein the sixth QNC information is used for indicating that notification information is sent when the QoS of a first Uu port QoS flow borne by data of a first service does not meet the QoS requirement, and the first Uu port QoS flow is a QoS flow which is distributed by the second session management network element and is used for bearing the data of the first service; and the second session management network element sends seventh QNC information to the access network device according to the sixth QNC information, where the seventh QNC information is used to indicate that notification information is sent when the quality of service of a first Uu port QoS flow does not meet a quality of service requirement, the first Uu port QoS flow is a Uu port QoS flow corresponding to the first QoS flow, the first QoS flow is used to transmit data of a first service for the first terminal device between the first terminal device and the data network, the first Uu port QoS flow is used to transmit data of the first service for the first terminal device between the relay device and the access network device, and the second session management network element provides services for the relay device.

With reference to the seventh aspect, in some implementations of the seventh aspect, the sixth QNC information includes sixth flow description information, where the sixth flow description information includes an address of the N3IWF and an SPI corresponding to the first QoS flow; the seventh QNC information includes an identification of the first Uu port QoS flow.

With reference to the seventh aspect, in some implementations of the seventh aspect, the second session management network element receives ninth notification information from the access network device, where the ninth communication information is used to notify that the quality of service of the first Uu port QoS flow does not meet a quality of service requirement; the second session management network element sends seventh notification information to the N3IWF according to the ninth notification information, where the seventh notification information is used to notify that the QoS of the first Uu port QoS stream does not meet the QoS requirement; the seventh notification information is sent through the SPI corresponding to the first QoS flow; or the seventh notification information includes an SPI corresponding to the first QoS flow.

With this embodiment, the second session management network element (serving the relay device) binds the flow description information with the Uu port QoS flow, configures a QNC for the Uu port QoS flow, and sends the binding relationship and the QoS configuration to the access network device, so as to report the situation through the flow description information when the QoS of the Uu port QoS flow does not meet the QoS requirement.

With reference to the seventh aspect, in some implementations of the seventh aspect, the sending, by the second session management network element, seventh notification information to the N3IWF includes: the second session management network element directly sends seventh notification information to the N3 IWF; or the second session management network element sends seventh notification information to the N3IWF through PCF and/or NEF; or the second session management network element sends seventh notification information to the N3IWF through UPF; wherein the PCF and the UPF provide service for the relay device.

In an eighth aspect, a control device for quality of service is provided, the control device comprising a processor for implementing the function of the N3IWF in the method described in the first aspect.

The control device of the service quality comprises:

a transceiving unit, configured to receive first QNC information from a first session management network element, where the first QNC information is used to indicate that notification information is sent when the quality of service of the first QoS flow does not meet a quality of service requirement, the first QoS flow is used for transmitting data of a first service between a first terminal device and a data network, and the first session management network element provides a service for the first terminal device;

the transceiving unit is further configured to send, to the first terminal device, second QNC information through a relay device, where the second QNC information is used to instruct sending of notification information when the quality of service of the first QoS flow does not satisfy a quality of service requirement.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the first QNC information includes an identification of the first QoS flow; the second QNC information comprises the identification of the first QoS flow and first flow description information, and the first flow description information comprises the address of the N3IWF and the SPI corresponding to the first QoS flow.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the transceiver unit is further configured to receive first notification information from the first terminal device, where the first notification information is used to notify that the quality of service of the first QoS flow does not meet a quality of service requirement;

the transceiver unit is further configured to send the first notification information to the first session management network element.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the transceiver unit is further configured to receive, through an SPI corresponding to a first Uu port QoS flow, second notification information from the relay device, a second session management network element, or an access network device, where the second notification information is used to notify that a quality of service of the first Uu port QoS flow does not meet a quality of service requirement, the first Uu port QoS flow is used to transmit data of the first service for the first terminal device between the relay device and the access network device, the first Uu port QoS flow is a Uu port QoS flow corresponding to the first QoS flow, and the second session management network element provides a service for the relay device;

the control device further comprises a processing unit, wherein the processing unit is used for judging that the service quality of the first QoS flow does not meet the service quality requirement according to the second notification information and the corresponding relation between the SPI and the first QoS flow;

the transceiving unit is further configured to send third notification information to the first session management network element, where the third notification information is used to notify that the QoS of the first QoS flow does not meet a QoS requirement.

Optionally, the apparatus for controlling quality of service may further comprise a memory coupled to the processor, and the processor is configured to implement the function of the N3IWF in the method described in the first aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the processor, and the processor may call and execute the program instructions stored in the memory for implementing the functions of the N3IWF in the method described in the first aspect above.

Optionally, the apparatus for transmitting data may further include a communication interface for the control apparatus of the quality of service to communicate with other devices. When the control device of the service quality is N3IWF, the communication interface may be a transceiver, an input/output interface, or a circuit, etc.

In one possible design, the quality of service control device includes: a processor and a communication interface, wherein the processor is connected with the communication interface,

the processor communicates with the outside by using the communication interface;

the processor is configured to run a computer program to cause the quality of service control apparatus to implement any of the methods described in the first aspect above.

It will be appreciated that the external portion may be an object other than a processor, or an object other than the apparatus.

In another possible design, the quality of service control device is a chip or a system of chips. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or system of chips, etc. The processor may also be embodied as a processing circuit or a logic circuit.

In a ninth aspect, a control device for quality of service is provided, where the control device includes a processor, and is configured to implement the function of the first terminal device in the method described in the first aspect.

The control device of the service quality comprises:

a transceiving unit, configured to receive second QoS notification control QNC information from a non-3GPP interworking function N3IWF, the second QNC information being used to indicate that notification information is sent when the quality of service of the first QoS flow used for communication between the first terminal device and a data network does not meet a quality of service requirement;

the processing unit is used for binding the first PC5 port QoS with the second QNC information according to the second QNC information and the first PC5 port QoS flow corresponding to the first QoS flow;

the transceiving unit is further configured to send third QNC information to the relay device, where the third QNC information is used to indicate that notification information is sent when the QoS of the Uu port QoS stream corresponding to the first PC5 port QoS stream does not meet the QoS requirement;

the first PC5 port QoS flow is used for communication between the first terminal equipment and the relay equipment, and the Uu port QoS flow corresponding to the first PC5 port QoS flow is used for communication between the relay equipment and the access network equipment.

With reference to the ninth aspect, in some implementations of the ninth aspect, the second QNC information includes an identification of the first QoS flow and second flow description information, and the second flow description information includes an address of the N3IWF and an SPI corresponding to the first QoS flow; the third QNC information includes the identifier of the first PC5 port QoS flow and third flow description information, where the third flow description information includes the address of the N3IWF and the SPI corresponding to the first PC5 port QoS flow.

With reference to the ninth aspect, in certain implementations of the ninth aspect,

the transceiver unit is further configured to receive fourth notification information from the relay device, where the fourth notification information is used to notify that the QoS of the Uu port QoS stream corresponding to the first PC5 port QoS stream does not meet the QoS requirement;

the transceiving unit is further configured to send first notification information to the N3IWF according to the fourth notification information, where the first notification information is used to notify that the QoS of the first QoS flow does not meet a QoS requirement.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the processing unit is further configured to determine that the quality of service of the first QoS flow does not satisfy a quality of service requirement according to the fourth notification information and a corresponding relationship between the first PC5 port QoS flow and the first QoS flow; the transceiver unit is further configured to send the first notification information to the N3 IWF; or

The transceiving unit is further configured to send the first notification information to the N3IWF through the SPI corresponding to the first QoS flow.

With reference to the ninth aspect, in some implementations of the ninth aspect, the processing unit is further configured to detect whether a quality of service of the QoS flow of the first PC5 port meets a quality of service requirement; the transceiving unit is further configured to send the first notification information to the N3IWF when detecting that the quality of service of the first PC5 port QoS stream does not meet a quality of service requirement; or

The transceiver unit is further configured to receive fifth notification information from the relay device, where the fifth notification information is used to notify that the QoS of the QoS stream of the first PC5 port does not meet the QoS requirement; the transceiving unit is further configured to send the first notification information to the N3IWF, where the first notification information is used to notify that the QoS of the first QoS stream does not meet QoS requirements.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the processing unit is further configured to determine that the QoS of the first QoS flow does not meet the QoS requirement according to the fifth notification message and the corresponding relationship between the first PC5 port QoS flow and the first QoS flow; the transceiver unit is further configured to send the first notification information to the N3 IWF; or

The processing unit is further configured to determine, according to the fifth notification information, that the QoS of the first QoS flow does not satisfy a QoS requirement; the transceiving unit is further configured to send the first notification information to the N3IWF through the SPI corresponding to the first QoS flow.

Optionally, the apparatus for controlling quality of service may further include a memory coupled to the processor, and the processor is configured to implement the function of the first terminal device in the method described in the second aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the processor, and the processor can call and execute the program instructions stored in the memory, so as to implement the functions of the first terminal device in the method described in the second aspect.

Optionally, the apparatus for transmitting data may further include a communication interface for the control apparatus of quality of service to communicate with other devices. When the control device of the quality of service is the first terminal device, the communication interface may be a transceiver, an input/output interface, or a circuit, etc.

the processor is configured to run a computer program to cause the quality of service control apparatus to implement any one of the methods described in the second aspect.

It will be appreciated that the external may be an object other than a processor, or an object other than the apparatus.

In another possible design, the control device for the quality of service is a chip or a system of chips. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit, etc. on the chip or system of chips. The processor may also be embodied as a processing circuit or a logic circuit.

In a tenth aspect, a control apparatus for quality of service is provided, the control apparatus includes a processor, and is configured to implement the function of the relay device in the method described in the first aspect.

The control device of the service quality comprises:

a transceiving unit, configured to receive third QoS notification control QNC information from a first terminal device, where the third QNC information is used to indicate that notification information is sent when the QoS of a Uu port QoS flow corresponding to a first PC5 port QoS flow does not meet a QoS requirement, and the first PC5 port QoS flow is used to transmit data of a first service between the relay device and the first terminal device;

the transceiving unit is further configured to send fourth QNC information to a second session management network element according to the third QNC information and the Uu port QoS flow corresponding to the first PC5 port QoS flow, where the fourth QNC information is used to indicate that notification information is sent when the quality of service of the first Uu port QoS flow does not meet a quality of service requirement, the second session management network element provides service for the relay device, the first Uu port QoS flow is a Uu port QoS flow corresponding to the first PC5 port QoS flow, and the first Uu port QoS flow is used to transmit data of the first service for the first terminal device between the relay device and an access network.

With reference to the tenth aspect, in some implementations of the tenth aspect, the third QNC information includes an identifier of the first PC5 port QoS flow and third flow description information, where the third flow description information includes an address of a non-3GPP interworking function N3IWF and a security parameter index SPI corresponding to the first PC5 port QoS flow; the fourth QNC information includes fourth flow description information, the fourth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow, and the N3IWF is configured to transmit the data of the first service to the first terminal device.

With reference to the tenth aspect, in some implementations of the tenth aspect, the third QNC information is carried in a session modification request message.

With reference to the tenth aspect, in certain implementations of the tenth aspect, the apparatus further includes a processing unit;

the transceiver unit is further configured to receive sixth notification information from the second session management network element or the access network device, where the sixth notification information is used to notify that the quality of service of the first Uu port QoS flow does not meet a quality of service requirement;

the processing unit is configured to determine, according to the sixth notification information and a correspondence between the identifier of the first Uu port QoS flow and the identifier of the first PC5 port QoS flow, that the QoS of the Uu port QoS flow corresponding to the first PC5 port QoS flow does not satisfy the QoS requirement, and the transceiver unit is further configured to send fourth notification information to the first terminal device, where the fourth notification information is used to notify that the QoS of the Uu port QoS flow corresponding to the first PC5 port QoS flow does not satisfy the QoS requirement; or

The processing unit is further configured to determine, according to the sixth notification information, that the QoS of the first Uu port QoS flow does not meet the QoS requirement through an SPI corresponding to the first Uu port QoS flow; the transceiving unit is further configured to send second notification information to the N3IWF, where the second notification information is used to notify that the QoS of the first Uu port QoS stream does not meet a QoS requirement, and the N3IWF is used to transmit the data of the first service to the first terminal device.

Optionally, the apparatus for controlling quality of service may further include a memory coupled to the processor, and the processor is configured to implement the function of the relay device in the method described in the third aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the processor, and the processor can call and execute the program instructions stored in the memory, so as to implement the functions of the relay device in the method described in the third aspect.

Optionally, the apparatus for transmitting data may further include a communication interface for the control apparatus of the quality of service to communicate with other devices. When the control device of the quality of service is a relay device, the communication interface may be a transceiver, an input/output interface, or a circuit or the like.

the processor is configured to run a computer program to cause the quality of service control apparatus to implement any one of the methods described in the third aspect.

In an eleventh aspect, a control device for quality of service is provided, where the control device includes a processor and is configured to implement the function of the second session management network element in the method described in the first aspect.

The control device of the service quality comprises:

a transceiving unit, configured to receive fourth QoS notification control QNC information from a relay device, where the fourth QNC information is used to indicate that notification information is sent when the QoS of a first Uu port QoS stream does not meet a QoS requirement, the first Uu port QoS stream is used to transmit data of a first service for a first terminal device between the relay device and an access network device, and the second session management network element provides a service for the relay device;

the transceiving unit is further configured to send fifth QNC information to the access network device, where the fifth QNC information is used to indicate that notification information is sent when the QoS of the first Uu port QoS flow does not meet QoS requirements.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the fourth flow description information includes an address of a non-3GPP interworking function N3IWF and a security parameter index SPI corresponding to the first Uu port QoS flow; the fifth QNC information includes an identifier of the first Uu port QoS flow and/or fifth flow description information, the fifth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow, and the N3IWF is configured to transmit data of the first service to the first terminal device.

With reference to the eleventh aspect, in certain implementations of the eleventh aspect, the apparatus further includes a processing device;

the transceiver unit is further configured to receive sixth notification information from the access network device, where the sixth notification information is used to notify that the QoS of the first Uu port QoS flow does not meet a QoS requirement;

the transceiver unit is further configured to send the sixth notification information to the relay device; or

The processing unit is configured to determine, according to the sixth notification information, that the QoS of the first Uu port QoS flow does not satisfy the QoS requirement through the SPI corresponding to the first Uu port QoS flow, and the transceiver unit is further configured to send the second notification information to the N3IWF, where the second notification information is used to notify that the QoS of the first Uu port QoS flow does not satisfy the QoS requirement.

Optionally, the apparatus for controlling quality of service may further include a memory, coupled to the processor, and the processor is configured to implement the function of the second session management network element in the method described in the fourth aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the processor, and the processor can call and execute the program instructions stored in the memory, so as to implement the functions of the second session management network element in the method described in the fourth aspect.

Optionally, the apparatus for transmitting data may further include a communication interface for the control apparatus of quality of service to communicate with other devices. When the control device of the service quality is the second session management network element, the communication interface may be a transceiver, an input/output interface, or a circuit.

the processor is configured to run a computer program to enable the quality of service control apparatus to implement any one of the methods described in the fourth aspect.

In a twelfth aspect, a control device for quality of service is provided, where the control device includes a processor, and is configured to implement the function of the access network device in the method described in the first aspect.

The control device of the service quality comprises:

a transceiving unit, configured to receive fifth QoS notification control QNC information from a second session management network element, where the fifth QNC information is used to indicate that notification information is sent when the quality of service of a first Uu port QoS stream does not meet a quality of service requirement, the first Uu port QoS stream is used to transmit data of a first service for a first terminal device between a relay device and an access network device, and the second session management network element provides a service for the relay device;

the processing unit is used for detecting whether the service quality of the QoS flow of the first Uu port meets the service quality requirement or not;

the transceiving unit is further configured to send sixth notification information to the second session management network element or the relay device when the quality of service of the first Uu port QoS stream does not meet a quality of service requirement, where the sixth notification information is used to notify that the quality of service of the first Uu port QoS stream does not meet the quality of service requirement;

the transceiving unit is further configured to send second notification information to a non-3GPP interworking function N3IWF through a security parameter index SPI corresponding to the first Uu port QoS, where the second notification information is used to notify that the QoS of the first Uu port QoS stream does not meet a QoS requirement, and the N3IWF is used to transmit the data of the first service to the first terminal device.

With reference to the twelfth aspect, in certain implementations of the twelfth aspect, the fifth QNC information includes an identifier of the first Uu port QoS flow and/or fifth flow description information, and the fifth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow.

Optionally, the apparatus for controlling quality of service may further include a memory coupled to the processor, and the processor is configured to implement the function of the access network device in the method described in the fifth aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the processor, and the processor can call and execute the program instructions stored in the memory, so as to implement the functions of the access network device in the method described in the fifth aspect.

Optionally, the apparatus for transmitting data may further include a communication interface for the control apparatus of the quality of service to communicate with other devices. When the quality of service control device is an access network device, the communication interface may be a transceiver, an input/output interface, or a circuit, etc.

the processor is configured to run a computer program to cause the quality of service control apparatus to implement any one of the methods described in the fifth aspect.

In another possible design, the quality of service control device is a chip or a system of chips. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit, etc. on the chip or system of chips. The processor may also be embodied as a processing circuit or a logic circuit.

In a thirteenth aspect, a control device for quality of service is provided, the control device comprising a processor for implementing the function of the N3IWF in the method described in the first aspect.

The control device of the service quality comprises:

a transceiver unit, configured to receive notification control QNC information corresponding to a first quality of service QoS flow from a first session management network element, where the first QNC information is used to indicate that notification information is sent when the quality of service of the first QoS flow does not meet a quality of service requirement, the first QoS flow is used to transmit data of a first service between the first terminal device and a data network, and the first session management network element provides a service for the first terminal device;

the transceiving unit is further configured to send sixth QNC information to a second session management network element, where the sixth QNC information is used to indicate that notification information is sent when the QoS of a first Uu port QoS flow carried by the data of the first service does not meet a QoS requirement, and the first Uu port QoS flow is a QoS flow allocated by the second session management network element and used for carrying the data of the first service.

With reference to the thirteenth aspect, in certain implementations of the thirteenth aspect, the first QNC information includes an identification of the first QoS flow; the sixth QNC information includes sixth flow description information, where the sixth flow description information includes an address of the N3IWF and a security parameter index SPI corresponding to the first QoS flow.

With reference to the thirteenth aspect, in some implementations of the thirteenth aspect, the sending and receiving unit sends sixth QNC information to the second session management network element, including: transmitting the sixth QNC information to the second session management network element through PCF; or the sixth QNC information is sent to the second session management network element through UPF; wherein the PCF and the UPF provide service for the relay device.

With reference to the thirteenth aspect, in certain implementations of the thirteenth aspect, the apparatus further includes a processing unit;

the transceiver unit is further configured to receive seventh notification information from the second session management network element, where the seventh notification information is used to notify that the QoS of a first Uu port QoS flow does not meet a QoS requirement, and the first Uu port QoS flow is used to transmit data of the first service for the first terminal device between the relay device and the access network device; the seventh notification message is received through an SPI corresponding to the first QoS flow; or the seventh notification message includes the SPI corresponding to the first QoS flow;

the processing unit is configured to determine, according to the seventh notification information and a corresponding relationship between the SPI and the identifier of the first QoS flow, that the quality of service of the first QoS flow does not satisfy a quality of service requirement;

the transceiving unit is further configured to send eighth notification information to the first session management network element, where the eighth notification information is used to notify that the QoS of the first QoS stream does not meet the QoS requirement.

Optionally, the apparatus for controlling qos may further include a memory, coupled to the processor, and the processor is configured to implement the function of the N3IWF in the method described in the sixth aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the processor, and the processor may call and execute the program instructions stored in the memory, for implementing the functions of the N3IWF in the method described in the above sixth aspect.

Optionally, the apparatus for transmitting data may further include a communication interface for the control apparatus of quality of service to communicate with other devices. When the control device of the service quality is N3IWF, the communication interface may be a transceiver, an input/output interface, or a circuit, etc.

the processor is configured to run a computer program to cause the control device of quality of service to implement any one of the methods described in the sixth aspect above.

In another possible design, the control device for the quality of service is a chip or a system of chips. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or system of chips, etc. The processor may also be embodied as a processing circuit or a logic circuit.

In a fourteenth aspect, a control device for quality of service is provided, where the control device includes a processor and is configured to implement the function of the second session management network element in the method described in the first aspect.

The control device of the service quality comprises:

a transceiving unit, configured to receive sixth QoS notification control QNC information from a non-3GPP interworking function N3IWF, where the sixth QNC information is used to indicate that notification information is sent when the QoS of a first Uu port QoS flow carried by data of a first service does not meet a QoS requirement, and the first Uu port QoS flow is a QoS flow allocated by the second session management network element and used for carrying the data of the first service; and sending seventh QNC information to the access network device according to the sixth QNC information, where the seventh QNC information is used to indicate that notification information is sent when the QoS of a first Uu port QoS flow does not meet the QoS requirement, the first Uu port QoS flow is a Uu port QoS flow corresponding to a first QoS flow, the first QoS flow is used to transmit data of a first service for the first terminal device between the first terminal device and a data network, the first Uu port QoS flow is used to transmit data of the first service for the first terminal device between a relay device and the access network device, and the second session management network element provides service for the relay device.

With reference to the fourteenth aspect, in certain implementations of the fourteenth aspect, the sixth QNC information includes sixth flow description information, where the sixth flow description information includes an address of the N3IWF and a security parameter index SPI corresponding to the first QoS flow; the seventh QNC information includes an identification of the first Uu port QoS flow.

With reference to the fourteenth aspect, in certain implementations of the fourteenth aspect, the transceiver unit is further configured to receive ninth notification information from the access network device, where the ninth communication information is used to notify that the quality of service of the first Uu port QoS flow does not meet a quality of service requirement;

the device further comprises a processing unit, wherein the processing unit is used for judging that the service quality of the first Uu port QoS flow does not meet the service quality requirement according to the ninth notification information;

the transceiving unit is further configured to send seventh notification information to the N3IWF, where the seventh notification information is used to notify that the QoS of the first Uu port QoS stream does not meet the QoS requirement; the seventh notification information is sent through the SPI corresponding to the first QoS flow; or the seventh notification information includes the SPI corresponding to the first QoS flow.

With reference to the fourteenth aspect, in some implementations of the fourteenth aspect, the sending and receiving unit sends seventh notification information to the N3IWF, including: sending a seventh notification message to the N3IWF through the PCF; or sending seventh notification information to the N3IWF through UPF; wherein the PCF and the UPF provide service for the relay device.

Optionally, the apparatus for controlling quality of service may further include a memory, coupled to the processor, and the processor is configured to implement the function of the second session management network element in the method described in the seventh aspect.

In one possible implementation, the memory is used to store program instructions and data. The memory is coupled to the processor, and the processor can call and execute the program instructions stored in the memory, so as to implement the functions of the second session management network element in the method described in the seventh aspect.

Optionally, the apparatus for transmitting data may further include a communication interface for the control apparatus of quality of service to communicate with other devices. When the control device of the quality of service is the second session management network element, the communication interface may be a transceiver, an input/output interface, or a circuit.

the processor is configured to run a computer program to enable the quality of service control apparatus to implement any one of the methods described in the seventh aspect.

In a fifteenth aspect, the present application provides a computer-readable storage medium having instructions stored thereon which, when executed on a computer, cause the computer to perform the method of the above-described aspects.

In a sixteenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above-described aspects.

A seventeenth aspect provides a communication system including the control apparatus of quality of service shown in the eighth aspect, the control apparatus of quality of service shown in the ninth aspect, the control apparatus of quality of service shown in the tenth aspect, the control apparatus of quality of service shown in the eleventh aspect, the control apparatus of quality of service shown in the twelfth aspect, the control apparatus of quality of service shown in the thirteenth aspect, and the control apparatus of quality of service shown in the fourteenth aspect.

Eighteenth aspect provides a chip apparatus, which includes a processing circuit, and the processing circuit is configured to call and run a program from a memory, so that a communication device on which the chip apparatus is installed executes the method in any one of the first to seventh possible implementation manners.

The QoS control apparatus, the communication system, the computer-readable storage medium, the computer program product, and the chip apparatus provided in the present application configure the QNC parameter to the access network device through the first terminal device, the relay device, and the second session management network element, so that when the access network device detects that the QoS of the first Uu port QoS stream corresponding to the first QoS stream does not meet the QoS requirement, the access network device reports the QoS to the N3IWF through different paths, so that a core network element connected to the N3IWF timely adjusts the QoS parameter, and guarantees the QoS requirement of the first QoS stream corresponding to the first service stream.

Drawings

Fig. 1 is an architectural diagram of a 5G ProSe communication;

fig. 2 is an N3IWF based relay access architecture;

fig. 3 is a schematic diagram of a user plane protocol stack using layer 3 relay based on N3IWF in UE-to-Network scenario;

FIG. 4 is a schematic diagram of a quality of service control method according to an embodiment of the present application;

fig. 5 is a schematic diagram of another method for controlling quality of service according to an embodiment of the present application;

fig. 6 is a schematic diagram of another qos control method according to an embodiment of the present application;

fig. 7 is a schematic diagram of another method for controlling quality of service according to an embodiment of the present application;

FIG. 8 is a schematic diagram of another control method for monitoring quality of service according to an embodiment of the present application;

fig. 9 is a schematic diagram of another qos control method according to an embodiment of the present application.

Fig. 10 is a schematic diagram of a quality of service control apparatus according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a quality of service control device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) systems, general Packet Radio Service (GPRS), long term evolution (long term evolution, LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), worldwide Interoperability for Microwave Access (WiMAX) communication systems, fifth generation (5 g) systems or new radio systems (NR), and future evolution systems.

Terminal equipment in the embodiments of the present application may refer to user equipment, access terminals, subscriber units, subscriber stations, mobile stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user devices. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which is not limited in this embodiment of the present application.

The network device in this embodiment may be a device for communicating with a terminal device, where the network device may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, may also be a base station (nodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, may also be an evolved node b (eNB, or eNodeB) in an LTE system, may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network, or a network device in a PLMN network for future evolution, and the like, and the present embodiment is not limited.

In order to improve the utilization of wireless spectrum and provide cellular network services for terminals out of the coverage of the cellular network, the cellular communication network introduces proximity-based services (ProSe) communication in which terminal devices located in close proximity can directly establish a communication link without forwarding the communication through a base station. Fig. 1 shows a schematic diagram of a 5G ProSe communication architecture, where the network architecture includes a terminal device, an access network device, an access management network element, a session management network element, a user plane network element, a policy control network element, a network slice selection network element, a network warehouse function network element, a network data analysis network element, a unified data management network element, a unified data storage network element, an authentication service function network element, a network capability open network element, an application function network element, and a Data Network (DN) connected to an operator network. The terminal equipment can send service data to the data network through the access network equipment and the user plane network element, and receive the service data from the data network.

An access network device is a device in a network for accessing a terminal device to a wireless network. The access network device may be a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). The network device may include an evolved base station (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), such as a conventional macro base station eNB and a micro base station eNB in a heterogeneous network scenario, or may also include a next generation Node B (gNB) in a fifth generation mobile communication technology (5 g) New Radio (NR) system, or may also include a radio network controller (radio network controller, RNC), a Node B (NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a transmission point (transmission point, TRP), a home base station (e.g., a base station, or home base station), a base station (base station B, base transceiver station, BTS), a transmission point (transmission point, TRP), a base station (base station, access point, AP), a radio Access Point (AP), a radio network Access Point (AP), a radio network, etc., or a distributed Access Point (AP), or a wireless access point (AP, etc. In a scenario of separate deployment of an access network device including a CU and a DU, the CU supports Radio Resource Control (RRC), packet Data Convergence Protocol (PDCP), service Data Adaptation Protocol (SDAP), and other protocols; the DU mainly supports a Radio Link Control (RLC), a Medium Access Control (MAC) and a physical layer protocol.

An access management network element, which is mainly used for the attachment of a terminal in a mobile network, mobility management, and tracking area update processes, terminates a Non Access Stratum (NAS) message, completes registration management, connection management, reachability management, tracking area list (TA list) allocation, mobility management, and the like, and transparently routes a Session Management (SM) message to a session management network element. In the fifth generation (5G) communication system, the access management element may be an access and mobility management function (AMF), and in a future communication system (such as a 6G communication system), the mobility management element may still be an AMF element, or may also have other names, which is not limited in this application.

The session management network element is mainly used for session management in a mobile network, such as session establishment, modification and release. The specific functions include allocating an Internet Protocol (IP) address to the terminal, selecting a user plane network element providing a message forwarding function, and the like. In the 5G communication system, the session management network element may be a Session Management Function (SMF), and in a future communication system (e.g. a 6G communication system), the session management network element may still be an SMF network element, or may also have another name, which is not limited in this application.

The user plane network element is mainly used for processing user messages, such as forwarding, charging, legal monitoring and the like. The user plane network element may also be referred to as a Protocol Data Unit (PDU) session anchor (PSA). In a 5G communication system, the user plane network element may be a User Plane Function (UPF), and in a future communication system (e.g., a 6G communication system), the user plane network element may still be a UPF network element, or may also have other names, which is not limited in this application.

The policy control network element includes a user subscription data management function, a policy control function, a charging policy control function, quality of service (QoS) control, and the like. In a 5G communication system, the policy control network element may be a Policy Control Function (PCF), and in a future communication system (e.g. a 6G communication system), the policy control network element may still be a PCF network element, or may also have other names, which is not limited in this application.

The network slice selection function network element is mainly used for selecting a proper network slice for the service of the terminal equipment. In the 5G communication system, the network slice selection network element may be a Network Slice Selection Function (NSSF) network element, and in a future communication system (e.g., a 6G communication system), the network slice selection network element may still be an NSSF network element, or may also have other names, which is not limited in this application.

The network warehouse function network element is mainly used for providing registration and discovery functions of the network element or services provided by the network element. In the 5G communication system, the network warehouse function network element may be a network warehouse function (NRF), and in a future communication system (for example, a 6G communication system), the network warehouse function network element may still be an NRF network element, or may also have another name, which is not limited in this application.

The network data analysis network element may collect data from various Network Functions (NF), such as a policy control network element, a session management network element, a user plane network element, an access management network element, and an application function network element (through a network capability open function network element), and perform analysis and prediction. In a 5G communication system, the network data analysis network element may be a network data analysis function (NWDAF), and in a future communication system (for example, a 6G communication system), the network data analysis network element may still be an NWDAF network element, or may also have another name, which is not limited in this application.

And the unified data management network element is mainly used for managing the subscription information of the terminal equipment. In the 5G communication system, the unified data management network element may be a Unified Data Management (UDM), and in a future communication system (e.g. a 6G communication system), the unified data management network element may still be a UDM network element, or may also have other names, which is not limited in this application.

The unified data storage network element is mainly used for storing structured data information, wherein the structured data information comprises subscription information, strategy information and network data or service data defined by a standard format. In the 5G communication system, the unified data storage network element may be a unified data storage (UDR), and in a future communication system (e.g. a 6G communication system), the unified data storage network element may still be a UDR network element, or may also have other names, which is not limited in this application.

And the authentication service function network element is mainly used for carrying out security authentication on the terminal equipment. In the 5G communication system, the authentication service function network element may be an authentication server function (AUSF), and in a future communication system (e.g., a 6G communication system), the authentication service function network element may still be an AUSF network element, or may also have other names, which is not limited in this application.

The network capability is opened, and part of the functions of the network can be exposed to the application in a controlled manner. In the 5G communication system, the network element with an open network capability may be a network capability open function (NEF), and in a future communication system (e.g., a 6G communication system), the network element with an open network capability may still be an NEF network element, or may also have another name, which is not limited in this application.

The application function network element may provide service data of various applications to a control plane network element of a communication network of an operator, or obtain data information and control information of the network from the control plane network element of the communication network. In the 5G communication system, the application function network element may be an Application Function (AF), and in a future communication system (e.g. a 6G communication system), the application function network element may still be an AF network element, or may also have other names, which is not limited in this application.

The data network is mainly used for providing data transmission service for the terminal equipment. The data network may be a private network, such as a local area network, a Public Data Network (PDN) network, such as the Internet (Internet), or a private network co-deployed by an operator, such as an IP multimedia network subsystem (IMS) service.

It should be understood that the above network elements or functions may be network elements in a hardware device, or may be software functions running on dedicated hardware, or virtualization functions instantiated on a platform (e.g., a cloud platform). Optionally, the network element or the function may be implemented by one device, or may be implemented by multiple devices together, or may be a functional module in one device, which is not specifically limited in this embodiment of the present application.

As shown in the schematic diagram of the 5G Prose communication architecture shown in fig. 1, communication among UE a, UE B, and NG-RAN may be regarded as communication connection under the architecture of UE-to-Network Relay, and a remote UE (i.e., UE B) may establish connection with a next generation radio access Network (NG-RAN) through a Relay device (i.e., UE a), where UE a and NG-RAN forward respective signaling and data for both through a Uu interface; and respective signaling and data are forwarded between the UE B and the UE A through a PC5 interface.

Typically, data for one UE needs to be transmitted through both the radio access network and the core network when it needs to be connected to the DN over the radio network. Fig. 2 shows an architecture diagram of 3 UE bs connected to the DN through a wireless network, which includes three access modes.

In the first mode, the UE B directly accesses the core network through the RAN, the transmission between the UE B and the RAN is access network transmission, and the transmission from the RAN to the DN is internal transmission of the core network. Specifically, UE B employs 3GPP access, and a PDU session for carrying UE B to DN is transmitted over an air interface between UE B and RAN (i.e., access network transmission), and is transmitted inside a core network from RAN to DN (i.e., core network transmission), so as to complete an access process from UE B to DN.

And in the second mode, the UE B accesses the core network through the non-3GPP access equipment and the N3IWF. The transmission between the UE B and the N3IWF is access network transmission, and the transmission from the N3IWF to the DN is core network internal transmission. Specifically, UE B employs non-3GPP access, and at this time, a PDU session for carrying UE B to DN is connected to UE B and N3IWF through non-3GPP access equipment via UE B), and core network internal transmission from N3IWF to DN completes the entire service communication. In the second scheme, compared to the first scheme, the PDU session of the UE B is different in the link that the UE B passes through before entering the core network in the second scheme.

And thirdly, when the UE B serving as the remote UE accesses the core network by adopting a relay connection mode based on the N3IWF, the communication with the core network is realized through the UE A (relay UE), the RAN and the N3IWF. As shown in fig. 2, first, the remote UE and the relay UE perform data transmission using the PC5 interface. Secondly, the relay UE uses its PDU session to send the remote UE data received from the PC5 interface to the RAN over the Uu interface and finally sends the data packet to the N3IWF over UPF forwarding. Finally, the PDU session of UE B enters the core network of UE B through N3IWF to connect to DN. When the connection method of the third method is adopted, the communication link from the UE B to the DN is split into three links, that is, a PC5 link (referred to as link one) from the remote UE (UE B) to the relay UE (UE a), a link (PDU session connection of the relay UE, that is, transmission between the access Network and the core Network of the relay UE, referred to as link two) from the relay UE to the N3IWF, and a link (PDU session connection of the remote UE, referred to as link three) from the N3IWF to the Data Network (DN) that the remote UE needs to visit. In the third mode, compared with the first and second modes, the traffic (data) of the remote UE is transmitted in a similar manner inside the core network, but the traffic (data) is transmitted in a different manner by the access network. Specifically, the PC5 link (link one) between UE B and UE a is similar to the link between UE B and the non-3GPP access device in the second mode, and the PDU session connection of the relay UE (i.e., relay UE to RAN, and then to N3IWF through the core network of the relay UE, link two) completes the functions assumed by the link from the non-3GPP access device to the N3IWF in the second mode. The combination of link one and link two together completes the access network transport portion of the PDU session for the remote UE.

In the above relay communication method based on N3IWF (method three), fig. 3 shows a user plane protocol stack of PDU session transmission from a remote UE to a network for relay access based on N3IWF. The remote UE and the relay use the PC5-U interface for data transmission. After receiving the data packet of the remote UE, the relay decodes the bottom layer of the data packet until the data packet is decoded to the IP layer (the data content in the IP layer is not decoded). And then, the relay uses a protocol stack of the Uu interface to perform layer 2 and layer 1 packing operation on the IP data packet of the remote UE, the Uu interface is used for sending the data packet to the UPF through the access network equipment, and the UPF sends the data packet to a corresponding application server according to the routing information indicated by the data packet. In this process, the gNB does not perceive that the relay forwards the data of the remote UE, and can be understood as only providing the conventional Uu interface cellular service for the relay.

In ProSe relay communication, a remote UE may use different applications (or services) in one PDU session, and quality of service (QoS) parameters required by different applications (or services) are different, for example, video service requires high bandwidth, while voice communication requires low latency to ensure reliability. Therefore, the SMF of the remote UE may establish different QoS flows for QoS requirements of different services according to the communication requirements of the remote UE, and each QoS flow is identified by a QoS Flow Identifier (QFI). QoS requirements corresponding to the same QoS flow are the same, and these requirements may be quantified by QoS parameters, such as delay, bandwidth, packet loss rate, and the like. In order to facilitate the representation of QoS parameters, the 3GPP standard combines the indicators of delay, packet loss rate, packet processing priority, etc. with a standardized Identifier, i.e. 5QI (5G QoS Identifier). In addition to the QoS parameters indicated in the 5QI, the QoS parameters corresponding to each QoS flow further include Allocation and Retention Priority (ARP), flow bit rate (QoS flow for Guaranteed Bandwidth (GBR), including guaranteed rate and maximum rate), flow sum rate (QoS flow for which no guarantee is required for bandwidth) (Non-GBR), and so on according to the service requirement.

In the above description, for the session management network element SMF that manages the PDU session of the remote UE, in practical applications, it is often necessary to acquire link quality information when the access network transmits, for example, the SMF needs the access network device to monitor whether air interface resources can meet QoS target requirements, so as to adjust QoS parameters of QoS flows that need QoS guarantee in the PDU session in time, so that the service of the UE can be performed smoothly. However, as a core network element defined by 3GPP, SMF can only signal with 3GPP access network elements (i.e., RAN). Because the existing 3GPP standard does not provide a relevant definition for monitoring the air interface quality of the non-3GPP access device, for the non-3GPP access mode of the mode two, the non-3GPP access device is not controlled by the 3GPP standard. Different from the second method, although the third method also adopts the N3IWF network element to provide the access service for the remote UE, the relay PDU session providing the connection service for the remote UE and the N3IWF is carried by the 3GPP access network element device. Therefore, there is a possible scheme that enables the 3GPP access network device connected to the relay UE to provide a corresponding air interface resource monitoring service for a QoS flow requiring QoS guarantee in a PDU session of the remote UE.

However, according to the current 3GPP standard, it is not yet possible to make the core network element SMF of the remote UE know the link quality between the remote UE and the N3IWF (including the link one and the link two described above). Therefore, when the link quality of the link one and/or the link two cannot meet the GBR QoS requirement, the core network element of the remote UE cannot adjust the QoS parameter of the corresponding service, and thus the bandwidth requirement of the remote UE cannot be met or the end-to-end QoS requirement cannot be met.

The application provides a method for controlling the service quality, which enables the relay access method based on the N3IWF to determine whether the air interface resources of the access network side meet the QoS target requirement, namely when the communication link between the remote terminal and the N3IWF can not meet the QoS requirement, the condition is reported to the SMF of the remote terminal so as to adjust the corresponding QoS parameters, thereby ensuring the service quality requirement from the remote terminal to the core network.

Fig. 4 shows a schematic flow chart of a method 200 for controlling the quality of service of the N3 IWF-based relay access according to the embodiment of the present application. The following description will be made by taking fig. 4 as an example. The first terminal device in the following figures is a remote terminal.

S210, the first terminal device establishes an internet protocol security (IPsec) tunnel with the N3IWF through the relay device.

Specifically, the first terminal device connects to the N3IWF through a PDU session of the multiplexing relay device, and then accesses the DN by establishing the PDU session at the core network of the remote UE.

S211, as an optional implementation manner, the PCF of the first terminal device sends policy and charging control rule (PCC) to the first SMF. Accordingly, the first SMF receives the PCC rule from the PCF of the remote terminal.

It should be noted that the PCC rule is used to indicate QoS or charging related policy information that needs to be executed for a certain service, and is used here for PDU session rule configuration of the first terminal device.

It should be further noted that, for the GBR QoS flow, the PCC rule further includes parameters: qoS Notification Control (QNC) is used to indicate that the quality of air interface on RAN side cannot meet QoS requirement, and report this to core network, so as to adjust corresponding QoS parameter to guarantee end-to-end communication.

Optionally, the QNC may be an indication, for example, to indicate that the RAN needs to report the situation to the SMF when the air interface resource cannot guarantee the QoS requirement (the QoS requirement is a QoS parameter corresponding to the GBR QoS flow, such as GFBR, packet loss rate or delay, etc.). Meanwhile, when the channel quality between the first terminal device and the RAN satisfies the QoS requirement again, the RAN reports the condition that the QoS requirement can be satisfied again to the SMF.

Optionally, the QNC may also include an optional QoS profile (AQP). Wherein, the optional QoS configuration means that the RAN can provide multiple sets of corresponding QoS parameters for the same GBR QoS flow. For example, for the GRB QoS flow QFI 1, the corresponding QoS parameters are AQP 1= {5qi =1, gfbr =10mbps }, AQP 2= {5qi =1, gfbr =8mbps }, AQP 3= {5qi =2, gfbr =5mbps }, and the like. Among them, 5QI (5G QoS identifier,5G QoS indicator) is a standardized QoS parameter set, and is composed of QoS parameters such as packet delay overhead (PDB), packet Error Rate (PER), and the like. For example, when 5qi =1, the QoS parameters therein are represented as: the default priority is 20, PDB is 100ms, PER is 0.01, and the default average window is 2000ms. When the SMF sends an AQP to the radio access equipment, it indicates the current or default QoS parameter set to use, e.g. indicates that the AQP is AQP 1 by default. When the RAN monitors that the air interface rate or bandwidth cannot meet the QoS parameters of the current AQP (for example, GFBR =10Mbps indicated by AQP 1), but can meet the QoS parameters of AQP 2, the RAN sends an N2 message to the SMF, where the N2 message includes QFI and AQP information that can be met (for example, AQP 2).

The present application mainly discusses the case where the QoS parameters include QNC, so in the following PCC rules, QNC is included.

S212, the first session managing network element SMF sends the first QNC information to the N3IWF. Accordingly, the N3IWF receives information from the first QNC. The first QNC information is used to indicate that the notification information is transmitted when the quality of service of the first QoS flow does not meet the quality of service requirement.

It should be noted that the first QoS flow is used to transmit data of the first service between the first terminal device and the data network, and the first SMF provides a service for the first terminal device, which may be a remote UE.

In an embodiment of the present application, the first QNC information further includes an identifier QFI and a parameter QNC of the first QoS flow, and the QNC is configured to send the notification information when the QoS of the first QoS flow does not meet the QoS requirement.

Optionally, the first QNC information may further include other parameters, such as a GFBR, a Maximum Flow Bit Rate (MFBR), and the like, a delay, a packet loss rate, and the like, which are used to indicate a specific QoS parameter type for monitoring or a corresponding threshold, and this is not limited in this application. If no additional parameters are carried, the QNC may indicate by default that certain QoS parameters are to be monitored, such as GFBR values, which may be implemented according to standard definitions or equipment vendor specific deployment.

Optionally, the first session management network element SMF may carry the first QNC information when sending the QoS configuration information to the N3IWF.

In an optional implementation manner, the configuring, by the first SMF, the PDU session of the first terminal device according to the PCC rule obtained from the PCF includes mapping the service flow to a corresponding QoS flow, for example, a first QoS flow, and generating corresponding QoS configuration information for the corresponding QoS flow according to a QoS parameter (such as a QNC) in the PCC rule, for example, the QoS parameter corresponding to the first QoS flow includes the QNC.

In another optional embodiment, the first SMF configures the PDU session of the first terminal device according to the locally configured PCC, and the configuration mode may refer to a configuration mode according to a PCC rule, which is not described herein again for brevity.

S213, the N3IWF sends the second QNC information to the first terminal device. Accordingly, the first terminal device receives the second QNC information from the N3IWF and transmits feedback information to the N3IWF. Wherein the second QNC information is used for indicating that the notification information is sent when the service quality of the first QoS flow does not meet the service quality requirement.

In this embodiment of the present application, the second QNC information includes first QFI and first flow description information, where the flow description information includes an address of the N3IWF and an SPI corresponding to the first QoS flow, and the SPI is a port number of a secure connection corresponding to an IPSec tunnel established by the first terminal device and the N3IWF.

Optionally, the second QNC information may further include other parameters, such as ARP, guaranteed flow rate, and the like, which are not limited in this application.

In this embodiment, the first terminal device maps the first QoS flow to a first PC5 port QoS flow based on the received second QNC information, and then configures QNC parameters for the first PC5 port QoS flow, where the first PC5 port QoS flow is used to transmit data of the first service between the first terminal device and the relay device.

S214, the first terminal device sends a PC5 link change request to the relay device. Accordingly, the relay device receives the PC5 link change request from the first terminal device. The PC5 link change request includes third QNC information for indicating that the notification information is transmitted when the QoS of the Uu port QoS flow corresponding to the first PC5 port QoS flow does not satisfy the QoS requirement.

It should be noted that the Uu port QoS flow corresponding to the first PC5 port QoS flow is used for transmitting the data of the first service for the first terminal device between the relay device and the access network device.

In this embodiment of the application, the third QNC information includes an identifier of the QoS stream of the first PC5 port and third stream description information, where the third stream description information includes an address of the N3IWF and an SPI corresponding to the QoS stream of the first PC5 port, and the third stream description information is used to send notification information through the third stream description information when the QoS of the QoS stream of the Uu port does not meet the QoS requirement.

Where QoS requirements may be understood as a rate less than or equal to the QoS parameters, e.g. the QoS requirements is a 5Mbps rate, but the QoS parameters are 7Mbps. The QoS flow established by the relay device only needs to satisfy the QoS requirement of the first terminal device. Or, the first terminal device obtains the QoS parameter from the N3IWF and then sends the QoS parameter to the relay device, and the relay device may interpret the QoS parameter as a QoS requirement, that is, the relay device only needs to establish a QoS flow that can satisfy the QoS parameter.

S215, the relay device sends a PDU session modification request to the second SMF. Accordingly, the second SMF receives a PDU session modification request from the relay device, the PDU session modification request including fourth QNC information for indicating that the notification information is transmitted when the quality of service of the first Uu port QoS flow does not meet the quality of service requirement.

It should be noted that the second SMF serves the relay device.

In this embodiment of the present application, the fourth QNC information includes fourth flow description information, where the fourth flow description information includes an address of an N3IWF and an SPI corresponding to the first Uu port QoS flow, where the N3IWF is used to transmit data of the first service for the first terminal device.

In this embodiment of the present application, after receiving the fourth QNC information, the second SMF binds the fourth flow description information with the first Uu port QoS flow, and then configures a QNC parameter for the first Uu port QoS flow, where the QNC parameter is used to send notification information when the QoS does not meet the QoS requirement. And sending the binding relation and the configured QoS parameters to the access network equipment.

Optionally, the PDU session modification request further includes other parameters, such as a PDU session ID.

S216, the second SMF sends the updated QoS configuration information to the access network device. Accordingly, the access network device accepts the updated QoS configuration information. The updated QoS configuration information includes fifth QNC information for indicating that notification information is transmitted when the quality of service of the first Uu port QoS flow does not satisfy the quality of service requirement.

In this embodiment of the application, the second SMF binds the fourth flow description information thereof with the first Uu port QoS flow based on the received fourth QNC information, then configures a QNC parameter for the first Uu port QoS flow, where the QNC parameter is used to send notification information when the QoS does not meet the QoS requirement, and then sends the binding relationship and the configured QoS parameter to the access network device through the fifth QNC information.

In the embodiment of the present application, the fifth QNC information includes an identifier of the first Uu port QoS flow and/or fifth flow description information, where the fifth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow, and the N3IWF is configured to transmit data of the first service to the first terminal device.

S217, the second SMF sends a PDU session modification response to the relay device.

Specifically, the second SMF sends updated QoS configuration information to the relay device with a PDU session modification response.

S218, the relay device sends a PC5 link feedback message to the first terminal device.

Steps S219 to S226 are executed to trigger a process of sending a notification (QNC indication) when the access network device finds that the QoS of the first Uu port QoS flow does not satisfy the QoS requirement.

S219, the access network device sends a QNC indication to the second SMF. Accordingly, the second SMF receives the QNC indication. The QNC indicates that the QoS for the QoS flow for the first Uu port is not satisfied with the QoS requirement.

In an optional implementation manner, when the access network device detects that the quality of service of the first Uu port QoS flow does not meet the quality of service requirement, an N2 message (N2 SM message) is sent to the SMF of the relay device, where the N2 SM message includes an identifier of the first Uu port QoS flow and a QNC indication. For example, when a QoS parameter corresponding to a QoS flow in QoS configuration is GFBR =5Mbps and includes QNC, GFBR =5Mbps is a QoS target requirement, and when the RAN side monitors that an air interface cannot support a minimum rate of 5Mbps, the situation needs to be reported to the SMF.

Optionally, when the access network device determines that the QoS of the Uu port QoS flow can satisfy the QoS target requirement again, the access network device sends an N2 message to the second SMF, where the N2 SM message includes an identifier of the first Uu port QoS flow and an indication that the QoS target requirement of the QoS flow can be satisfied again. For example, in the example described in the above paragraph, when the access network device can support the rate of 5Mbps again, the access network device may report the condition that the QoS target requirement is satisfied again to the second SMF.

Optionally, when the QoS target requirement cannot be achieved, the N2 SM message instructs the access network device to check whether there is a QoS configuration that can be satisfied among other QoS configurations. For example, when a QoS flow in a QoS configuration includes multiple AQPs, e.g., AQP 1: GFBR =5mbps, aqp 2: GFBR =8Mbps. The QoS of the current QoS flow is configured as AQP 2, and the QoS of the Uu port QoS flow of the access network device can only support a rate of 6Mbps, that is, can support the QoS target requirement of AQP 1, then the N2 SM information that the access network device can report to the second SMF may be that AQP 2 cannot meet, and AQP 1 can meet.

And S220, the second SMF sends a QNC instruction to the first terminal equipment through the relay equipment.

In an optional embodiment, the second SMF sends a NAS message to the relay device via the AMF, where the NAS message includes a first QNC indication, and the first QNC indication indicates that the QoS of the first Uu port QoS flow does not meet the QoS requirement. Wherein the first QNC indication includes an identification of a first Uu port QoS flow. The relay equipment judges that the service quality of the QoS flow of the first PC5 port does not meet the service quality requirement according to the corresponding relation between the QoS flow of the first Uu port and the QoS flow of the first PC5 port, and then sends a PC5 signaling message to the first terminal equipment, wherein the PC5 signaling message comprises a second QNC instruction, and the QNC is used for indicating that the service quality of the QoS flow of the first PC5 port does not meet the service quality requirement. The QNC information also includes an identification of the first PC5 port QoS flow. And the first terminal equipment judges that the service quality of the first QoS does not meet the service quality requirement according to the corresponding relation between the QoS flow of the first PC5 port and the first QoS flow.

In an optional embodiment, the second SMF sends a NAS message to the relay device via the AMF, where the NAS message includes a first QNC indication, and the first QNC indication indicates that the QoS of the first Uu port QoS flow does not meet the QoS requirement. The first QNC indication includes the N3IWF address and the SPI corresponding to the first Uu port QoS flow. And the relay equipment sends a PC5 signaling message to the first terminal equipment through the corresponding relation between the SPI and the QoS of the first PC5 port, wherein the PC5 signaling message comprises a second QNC instruction. The second QNC indicates that the quality of service for the QoS flow for the first PC5 port does not satisfy the quality of service requirement. The QNC information further comprises an N3IWF address and an SPI corresponding to the QoS flow of the first PC5 port, and the first terminal equipment judges that the service quality of the first QoS flow does not meet the service quality requirement according to the corresponding relation between the SPI and the first QoS flow.

In another optional embodiment, the second SMF sends a NAS message to the relay device through the AMF, where the NAS message includes a first QNC indication, and the first QNC indication is used to indicate that the QoS of the first Uu port QoS flow does not meet the QoS requirement. The first QNC indication comprises an identifier of the first Uu port QoS flow, an N3IWF address and an SPI corresponding to the first Uu port QoS flow, and the relay equipment sends second QNC information to the first terminal equipment through any one of the two implementation modes.

And S221, the first terminal equipment sends a QNC instruction to the N3IWF through the relay equipment, wherein the QNC instruction is used for indicating that the service quality of the first QoS flow does not meet the service quality requirement.

As an optional implementation manner, the first terminal device encapsulates the identifier of the first QoS flow and the QNC indication, and encapsulates the identifier of the first QoS flow and the QNC indication together, so that the identifier of the first QoS flow explicitly received by a core network element (e.g., the first SMF) of the first terminal device corresponds to the QNC indication, and after encapsulation, the network element that forwards this encapsulated information may send the encapsulated information to the corresponding network element, and the network element that performs forwarding may not or cannot view the specific information content in the container. The relay device then sends the container to the N3IWF.

S222, the N3IWF forwards, to the first SMF, a QNC indication obtained from the first terminal device, where the QNC information is used to indicate that the quality of service of the first QoS flow does not meet the quality of service requirement.

It should be noted that the first SMF provides a service for the first terminal device.

As an alternative implementation, if the first terminal device puts the first QoS flow identifier and the QNC indication in a container and sends them to the N3IWF, the N3IWF may send the container directly to the AMF through the N2 interface, and then the AMF forwards the container to the first SMF. In this case, the N3IWF does not need to know the specific content in the container, but only performs the forwarding operation, and S222 and S223 in fig. 4 may be the same step, i.e. a straight line with an arrow.

S223, in an optional implementation manner, if the PCF subscribes to the SMF at S223 to report the event indicated by the QNC, the first SMF reports the event to the PCF.

S224, the SMF initiates a PDU conversation change process of the first terminal device.

Optionally, the PCF may also initiate a PDU session change procedure of the first terminal device.

S225, the first terminal equipment initiates a corresponding PC5 link modification flow according to the changed PDU session information.

S226, the relay equipment initiates a corresponding PDU session change flow according to the PC5 link modification request initiated by the first terminal equipment.

The foregoing embodiment provides a method for how an access network device connected to a relay device acquires a QNC parameter, and when the access network device finds that the QoS of a first Uu port QoS stream cannot meet a QoS target requirement, obtains, according to a series of mapping relationships between the first Uu port QoS and the first QoS stream, for example, a mapping relationship between the first Uu port QoS stream and a first PC5 port QoS stream, and a mapping relationship between the first PC5 port QoS stream and the first QoS stream, that the QoS of the first QoS stream cannot meet the QoS requirement, and sends a QNC indication to a first SMF through a second SMF, the relay device, the first terminal device, and an N3IWF network element, so that the first SMF adjusts the QoS parameter according to the condition, and guarantees the QoS requirement for the first terminal device to access to a DN. In addition, the relay access QoS control method based on the N3IWF also can support a QOS notification control scene.

Fig. 5 is another flowchart of a method 300 for controlling quality of service of N3 IWF-based relay access according to the embodiment of the present application. As shown in fig. 5, the difference from the application embodiment in fig. 4 is that in the embodiment of the present application, after receiving the QNC instruction sent by the access network device, the second SMF directly sends the QNC instruction to the N3IWF, so that forwarding through the terminal (including the relay device and the first terminal device) is avoided. As shown in fig. 5:

s310 to S319 are the same as S210 to S219 in fig. 4, and redundant description is not repeated in this embodiment of the present application.

And S320, after acquiring the QNC instruction from the access network equipment side, the second SMF sends the QNC instruction to the N3IWF, wherein the QNC instruction indicates that the service quality of the first Uu port QoS flow does not meet the service quality requirement.

As an optional implementation manner, the access network device sends the N2 SM information to the second SMF, where the N2 SM information includes the QNC indication, and the QNC indication includes the QoS flow identifier of the first Uu port and/or the SPI corresponding to the address of the N3IWF and the QoS flow of the first Uu port. And the second SMF sends the QNC instruction to the N3IWF through the N3IWF address and the SPI corresponding to the QoS flow identification of the first Uu port or the SPI acquired from the access network equipment.

In an alternative embodiment, a tunnel is established between the SMF and the N3IWF through the UPF for transmitting the QNC indication, the message may be sent to the N3IWF by using the N3IWF address and the SPI as destination address information of the message, and the source address information may not be limited and may be address information of the first terminal device or the relay device. The tunnel may be that in step S315 or step S316, after the second SMF acquires the fourth or fifth flow description information (the N3IWF address and the SPI), and completes the QoS configuration of the PDU session of the first terminal device, a separate communication tunnel is established with the N3IWF.

S321, the N3IWF sends a QNC indication to the SMF of the first terminal device, where the QNC indication indicates that the quality of service of the first QoS flow does not meet the quality of service requirement.

Specifically, the N3IWF receives a QNC instruction from the second SMF through an SPI corresponding to the first Uu port QoS flow, the QNC instruction indicates that the service quality of the first Uu port QoS flow does not meet the service quality requirement, and the N3IWF sends the QNC instruction to the first SMF according to the corresponding relation between the SPI and the first QoS flow, and the QNC instruction indicates that the service quality of the first QoS flow does not meet the service quality requirement.

In an optional embodiment, the N3IWF sends a NAS message to the SMF of the first terminal device, where the NAS message includes a PDU session ID of the first terminal device and an N1 session management container, and the N1 session management container includes a QNC indication that the QoS of the first QoS flow does not satisfy the QoS requirement. The N1 session management container may also include a PDU session ID and/or a first QoS flow identification.

In another alternative embodiment, the N3IWF sends an N2 message to the first SMF, where the N2 message includes a PDU session ID and N2 SM information of the first terminal device, and the N2 SM information includes a QNC indication that the QoS of the first QoS flow does not satisfy the QoS requirement. The N2 SM information may also include a PDU session ID and/or a first QoS flow identification.

S322-S325 are the same as S224-S227 in FIG. 4, and are not described herein again.

The foregoing embodiment provides another method for how an access network device connected to a relay device acquires QNC information, and when the access network device finds that the QoS of a first Uu port QoS flow cannot meet a QoS target requirement, the QNC instruction may be sent to the N3IWF by using a second SMF, and the N3IWF determines, according to an association relationship between the first QoS flow and an SPI corresponding to the first Uu port QoS flow, that the QoS of the first QoS flow cannot meet the QoS target requirement, and then sends the QNC instruction to the first SMF, where the QNC instruction indicates that the QoS of the first QoS flow cannot meet the QoS requirement, so that the first SMF adjusts a QoS parameter according to the situation, and guarantees the QoS requirement for the first terminal device to access the DN. In addition, the method can also support a QOS notification control scene based on the relay access QoS control method of the N3IWF.

Fig. 6 is a schematic flowchart of an N3 IWF-based relay access method 400 according to still another embodiment of the present application. As shown in fig. 6, the difference from the application embodiment in fig. 4 is that, in the application embodiment, after receiving the QNC instruction, the access network device does not need to forward the QNC instruction to the N3IWF through the core network element (second SMF) of the relay device, but forwards the QNC instruction through the first terminal device, so that the influence on the core network element of the relay device is reduced.

S410 to S415 are the same as S210 to S215 in fig. 4, and redundant description is not repeated in this embodiment.

S416, the second SMF sends the updated QoS configuration information and the indication information to the access network device.

In this embodiment of the present application, when sending the updated QoS configuration information to the access network device, the second SMF also carries an indication information, which is used to indicate that the access network device sends the notification information when detecting that the QoS of the Uu port QoS stream does not meet the QoS requirement.

S417 to S418 are the same as S217 to S218 in fig. 4, and redundant description is not repeated in this embodiment.

S419, when finding that the QoS of the first Uu port QoS flow can not meet the QoS requirement, the access network equipment sends a QNC instruction to the first terminal equipment through the relay equipment, wherein the QNC information is used for indicating that the QoS of the first Uu port QoS flow can not meet the QoS requirement.

Specifically, the access network device sends the QNC indication to the relay device through an RRC message, where the RRC message carries the first QNC indication. The first QNC indication indicates that the quality of service of the first Uu port QoS flow does not satisfy the quality of service requirement. Wherein the first QNC indication includes an identification of a first Uu port QoS flow. The relay equipment judges that the service quality of the QoS flow of the first PC5 port cannot meet the service quality requirement due to the fact that the service quality of the QoS flow of the first Uu port does not meet the service quality requirement according to the corresponding relation between the QoS flow of the first Uu port and the QoS flow of the first PC5 port, and then sends a PC5 signaling message to the first terminal equipment, wherein the PC5 signaling message comprises a second QNC indication, and the QNC is used for indicating that the service quality of the QoS flow of the first PC5 port does not meet the service quality requirement. The QNC information also includes an identification of the first PC5 port QoS flow. And the first terminal equipment judges that the service quality of the first QoS does not meet the service quality requirement according to the corresponding relation between the QoS flow of the first PC5 port and the first QoS flow.

S420-S425 are the same as S222-S227 in FIG. 4 and are not described in detail here.

The foregoing embodiment provides a method for how an access network device connected to another relay device acquires a QNC parameter, and when the access network device finds that the QOS of a Uu port QOS stream cannot meet a QOS target requirement, the access network device may send a QNC instruction to an SMF of a first terminal device through the relay device and the first terminal device, and a relay access QOS control method based on an N3IWF can support a QOS notification control scenario.

Fig. 7 is a flowchart illustrating a method 500 for controlling quality of service of N3 IWF-based relay access according to an embodiment of the present application. As shown in fig. 7, the difference from the embodiment of the application in fig. 4 is that in the embodiment of the application, the access network device may directly send the QNC indication to the N3IWF, which reduces the process of signaling interaction.

S510 to S515 are the same as S210 to S215 in fig. 4, and redundant description is not repeated in this embodiment.

S516, the second SMF sends the updated QoS configuration information and the indication information to the access network device.

In this embodiment of the present application, when the SMF of the relay device sends the QoS configuration information to the access network device, the SMF further carries an indication information, which is used to indicate that the access network device sends the notification information to the N3IWF when detecting that the QoS of the first Uu port QoS flow does not meet the QoS requirement, and the indication information further carries flow description information (i.e., an SPI corresponding to an address of the N3IWF and the first QoS flow).

S517 to S518 are the same as S217 to S218 in fig. 4, and redundant description is not repeated in this embodiment of the present application.

S519, the access network equipment sends a QNC instruction to the N3IWF. Accordingly, the N3IWF receives the QNC indication sent by the access network equipment of the relay equipment.

In the embodiment of the application, the access network equipment sends a QNC indication to the N3IWF through the UPF via the N3 interface, where the QNC indication indicates that the QoS of the first Uu port QoS flow does not meet the QoS requirement. Specifically, the access network device may add additional information, that is, the N3IWF address, the SPI, and the QNC indication, to the uplink packet between the relay device and the UPF according to the SPI or N3IWF address corresponding to the first Uu port QoS flow. Or the access network equipment constructs a data packet and sends the data packet to the UPF, the destination address of the data packet is the N3IWF address and the SPI, and the QNC instruction is carried in the data packet or the packet header. The QNC indication is then sent by the UPF to the N3IWF address through the SPI.

In addition, the access network equipment can send a QNC instruction to the N3IWF through the relay terminal. Specifically, the access network device may send, through an RRC message, a QNC indication to the relay terminal, where the QNC indication is used to indicate that the QoS of the first Uu port QoS flow does not meet QoS requirements. The QNC indication message may carry the first Uu port QoS flow id, or the N3IWF address and SPI. The relay terminal may construct a message to send a QNC indication to the N3IWF with the N3IWF address and SPI as destination addresses, the indication indicating that the quality of service of the first Uu port QoS flow does not meet the quality of service requirement.

S520, the N3IWF sends a QNC directive to the SMF of the first terminal device, where the QNC directive indicates that the QoS of the first QoS flow does not meet the QoS requirement.

And the N3IWF judges that the service quality of the first QoS flow does not meet the service quality requirement according to the corresponding relation between the SPI and the first QoS flow, and then sends a QNC instruction to the first SMF, wherein the QNC instruction indicates that the service quality of the first QoS flow does not meet the service quality requirement.

S521-S524 are the same as S224-S227 in FIG. 4, and are not described herein again.

The foregoing embodiment provides a method for how an access network device connected to another relay device acquires QNC information, and when the access network device finds that the QoS of a first Uu port QoS flow cannot meet the QoS target requirement, directly reports this situation to the N3IWF through the SPI of the first Uu port QoS flow. And the N3IWF sends a QNC instruction to the first SMF according to the corresponding relation between the SPI and the first QoS flow, wherein the QNC instruction indicates that the QoS of the first QoS flow cannot meet the QoS requirement, so that the first SMF adjusts the QoS parameters according to the condition and the QoS requirement of the first terminal equipment for accessing the DN is ensured. In addition, the relay access QoS control method based on the N3IWF also can support a QOS notification control scene.

Fig. 8 is a flowchart illustrating a method 600 for controlling a quality of service of an N3 IWF-based relay access according to an embodiment of the present application. As shown in fig. 8, the difference from the embodiment of the application in fig. 4 is that in the embodiment of the application, the first terminal device or the relay device monitors the quality of service of the QoS flow of the first PC5 port corresponding to the first QoS flow, and when the quality of service does not meet the quality of service requirement, a flow of sending the QNC indication is triggered, which reduces the modification to the existing network.

S610 to S618 are the same as S210 to S218 in fig. 4, and redundant description is not repeated in this embodiment of the present application

S614, the first terminal device sends a PC5 link change request to the relay terminal. Accordingly, the relay terminal receives the PC5 link change request from the first terminal device.

In an alternative embodiment, the PC5 link change request includes third QNC information for instructing transmission of the notification information when the quality of service of the first PC5 port QoS flow does not satisfy the quality of service requirement. At this time, S615-S618 are the same as S215-S218 in fig. 4, and redundant description is not repeated in the embodiment of the present application.

In an alternative implementation, the PC5 link change request does not include the QNC parameter, and in this case, reference may be made to the prior art in S615-S618, which is not described in this embodiment in too much detail.

In an alternative embodiment, the PC5 link change request message sent by the first terminal device to the relay device does not include QNC information, and the first terminal device may monitor the PC5 link according to the QNC information, in which case S615-S618 are the same as those in the prior art.

Specifically, the first terminal may determine, according to a pre-configuration or a corresponding relationship between a signal strength configured by a network element (e.g., PCF, etc.) on a network side or a network element on an access side and a transmission rate that can be supported, whether the signal strength currently received from the relay device can meet a requirement of a bandwidth (transmission rate). Or directly through the received data packet, it may be counted whether the current rate, delay, or packet loss rate meets the QoS requirement of the first QoS stream within a certain time. This enables monitoring of the PC5 link.

S619, in an optional implementation manner, the relay device sends a QNC instruction to the first terminal device.

In the embodiment of the application, when monitoring that the service quality of the QoS stream of the first PC5 port does not meet the service quality requirement, the relay device sends a QNC indication to the first terminal device, where the indication indicates that the service quality of the QoS stream of the first PC5 port does not meet the service quality requirement. The relay device may use the same monitoring method as that of the first terminal described in S618 for monitoring the QoS flow of the PC5 port.

S620, the first terminal equipment sends a QNC instruction to the N3IWF through the relay equipment, and the instruction indicates that the service quality of the first QoS does not meet the service quality requirement.

In the embodiment of the application, the first terminal device determines that the quality of service of the first QoS flow does not satisfy the quality of service requirement according to the corresponding relationship between the QoS of the first PC5 port and the first QoS flow, and sends a QNC indication through the relay device, where the indication is that the quality of service of the first QoS does not satisfy the quality of service requirement.

Optionally, in S614, if the PC5 link change request includes third QNC information, the third QNC information is used to indicate that the notification information is sent when the QoS of the Uu port QoS flow corresponding to the first PC5 port QoS flow does not meet the QoS requirement. The third QNC information includes an identifier of the first PC5 port QoS flow and third flow description information, where the third flow description information includes an address of the N3IWF and an SPI corresponding to the first PC5 port QoS flow. The first terminal equipment detects that the service quality of a first PC5 port QoS flow does not meet the service quality requirement, judges that the service quality of the first QoS flow does not meet the service quality requirement according to the corresponding relation between the first PC5 port QoS and the first QoS flow or the corresponding relation between the first QoS flow and the SPI, and sends a QNC indication to the N3IWF, wherein the QNC indication indicates that the service quality of the first QoS flow does not meet the service quality requirement.

S621 to S625 are the same as S223 to S227 in fig. 4, and are not described again.

The above embodiment provides how the first terminal device acquires the QNC, and when it is found that the QoS of the QoS stream of the first PC5 port does not satisfy the QoS requirement, the QNC instruction is sent to the first terminal device, the first terminal device determines, according to different corresponding manners, that the QoS of the first QoS stream does not satisfy the QoS requirement, and then the QNC instruction is sent to the first SMF by the N3IWF network element, so that the first SMF adjusts the QoS parameter according to the condition, and the QoS requirement of the first terminal device for accessing the DN is ensured. In addition, the relay access QoS control method based on the N3IWF also can support a QOS notification control scene.

Fig. 9 is a flowchart illustrating a method 700 for controlling quality of service of N3 IWF-based relay access according to an embodiment of the present application.

Reference is made to the foregoing descriptions for S711-S712, which are not repeated herein.

S713, the N3IWF sends QoS configuration information to the first terminal device, where the configuration information includes an identifier of the first QoS flow and QoS parameters corresponding to the first QoS flow.

S714, the first terminal device sends a PC5 link change request to the relay device.

S715, the relay device sends a PDU session modification request to the second SMF.

S716, the second SMF sends the updated QoS configuration information to the access network device.

S716-S718 refer to the above description, and the embodiments of the present application are not described herein again

S719, the N3IWF sends a QoS demand (parameter) creation or update message to the second SMF, the update message including sixth QNC information for indicating that notification information is sent when the quality of service of the first QoS flow does not satisfy the quality of service demand.

It should be noted that the first QoS flow is used for transmitting data of the first service (i.e. the first QoS flow) between the first terminal device and the data network. The sixth QNC information includes sixth flow description information, and the sixth flow description information includes an address of the N3IWF and an SPI corresponding to the first QoS flow.

In an alternative embodiment, the N3IWF sends a QoS requirement (parameter) update message to the second SMF directly or through the NEF. When the N3IWF acquires the identifier and/or address information of the second SMF, for example, when the identifier and/or address information of the SMF is queried through a Binding Support Function (BSF), a QoS requirement (parameter) update message may be sent to the second SMF directly or through the NEF.

In another alternative embodiment, the N3IWF sends a QoS requirement (parameter) update message to the second SMF via the PCF of the relay device.

Specifically, the N3IWF may send address information of the first terminal device to the BSF through the NEF or directly, for querying the PCF of the relay device to which the first terminal device is connected. If the N3IWF can directly confirm serving the PCF corresponding to the identifier or address information of the current relay terminal or the first terminal device, the above procedure may not be executed.

Then, the N3IWF sends a QoS change request message to the PCF of the relay device through the NEF or directly, and carries with the message an identifier (e.g., a General Public Subscription Identifier (GPSI) or a user permanent identifier (SUPI)) and/or address information (e.g., an IP address, a port number, etc.) of the first terminal device or the relay device, and sixth QNC information. Specifically, the implementation manner of the sixth QNC information may be sixth flow description information and QNC information, where the sixth flow description information includes an address of the N3IWF and an SPI corresponding to the first QoS flow, and the QNC information may be a cell or an indicator, and the implementation manner is not limited in the present invention.

In another alternative embodiment, the N3IWF sends a QoS requirement (parameter) update message to the second SMF via the UPF of the relay device. Specifically, the N3IWF sends a QoS parameter change message to the UPF connected to the SPI thereof, and carries with the message an identifier (e.g., a General Public Subscription Identifier (GPSI) or a user permanent identifier (SUPI)) and/or address information (e.g., an IP address, a port number, etc.) of the first terminal device or the relay device, and sixth QNC information. The message may also carry an indication or use a specific message name or the like to indicate to the UPF that the message needs to be sent to the second SMF. And the UPF finds the second SMF according to the identification and/or address information of the first terminal equipment or the relay equipment, and sends a QoS requirement (parameter) updating message of the N3IWF to the SMF, wherein the identification or address information of the relay equipment or the first terminal and the sixth QNC information are carried with the message.

It should be noted that, the N3IWF sends the QoS change message to the second SMF, and first sends the QoS change message to the NEF by invoking the service of the NEF (e.g., a message such as Nnef _ AFsessionWithQoS _ Update request, or Nnef _ parameterprovisionjcredit/Update request, or Nnef _ evendexposessubscriber). The NEF may then need to perform authorization authentication on the N3IWF to determine whether the N3IWF is a legitimate network element and is allowed to send a message to the network element of the relay terminal, and after verification, the NEF may invoke the service of the PCF (e.g., npcf _ PolicyAuthorization _ update request message) to send a QoS change message to the PCF. If the N3IWF is itself a trusted network element, the QoS update message is sent to the PCF without the need to invoke the PCF's services (e.g., npcf _ PolicyAuthorization _ update request message) directly through the NEF. The PCF then initiates an SM policy update to the SMF, e.g. sending a QoS change message to the SMF via an Npcf _ SMPolicyControl _ updaterequest message.

It should be understood that in the later technical development, the names of the messages used in the above procedures may be continued or may be different, and the present application does not limit the names.

S720, the second SMF sends updated QoS configuration information to the access network device, where the updated QoS configuration information includes seventh QNC information, and the seventh QNC information is used to indicate that the notification information is sent when the QoS of the first Uu port QoS flow does not meet the QoS requirement.

It should be noted that the first Uu port QoS flow is a Uu port QoS flow corresponding to the first QoS flow, and the first Uu port QoS flow is used for transmitting data of the first service for the first terminal device between the relay device and the access network device.

S721, when the access network device detects that the QoS of the first Uu port QoS flow does not satisfy the QoS requirement, it sends a QNC indication to the second SMF, where the QNC indication indicates that the QoS of the first Uu port QoS flow does not satisfy the QoS requirement.

S722, the second SMF sends a QNC indication to the N3IWF.

In an alternative embodiment, the second SMF sends a QNC indication to the N3IWF, which indicates that the QoS of the first Uu port QoS flow does not meet the QoS requirement.

Optionally, the QNC sends the N3IWF through the SPI corresponding to the first QoS flow, or the SPI corresponding to the first QoS flow may be included in the QNC indication.

In particular, the second SMF may send the QNC notification to the N3IWF either directly through the servitization interface or through the NEF.

Or, the second SMF may send a QNC notification to the N3IWF through the PCF, where the sixth flow description information and the QNC notification are carried with the message. And the PCF sends a QNC notification to the N3IWF according to the sixth flow description information. The PCF may send this message directly to the N3IWF or via the NEF, in particular in concert with S719.

Specifically, the SMF may initiate an SM policy Update to the PCF, e.g., send a QNC indication to the PCF via an Npcf _ SMPolicyControl _ Update message. The PCF then sends a QNC indication to the N3IWF via an Npcf _ PolicyAuthorization _ Notify message, or sends a QNC message to the N3IWF via a naff _ EventExposure _ Notify message of the NEF.

Or, the second SMF may send a QNC notification to the N3IWF address and the SPI through the UPF, which is implemented in a manner similar to S320.

S723, the N3IWF sends a QNC indication to the first SMF, where the indication is that the quality of service of the first link does not meet the quality of service requirement.

Specifically, the N3IWF receives a QNC instruction through the SPI, the N3IWF judges that the service quality of the first QoS does not meet the service quality requirement according to the corresponding relation between the SPI and the first QFI, and sends the QNC instruction to the first SMF, wherein the QNC instruction indicates that the service quality of the first QoS does not meet the service quality requirement.

S724-S727 are the same as S224-S227 in FIG. 4, and the embodiment of the present application is not described herein again.

The foregoing embodiment provides that the N3IWF directly interacts with a core network element of the relay UE according to the mapping relationship between the first QoS flow and the SPI, and sends the QNC information to the SMF of the relay UE, so that the SMF of the relay UE may further instruct the access network device to monitor the quality of air interface radio resources. And after the second SMF acquires the QNC instruction of the access network device, the second SMF may also send the QNC instruction to the N3IWF directly through a core network element (PCF or UPF) of the relay device. Therefore, the influence on the first terminal equipment and the relay equipment is reduced, and the method is easy to implement.

Fig. 10 is a schematic block diagram of a service quality control apparatus 800 according to an embodiment of the present application. As shown, the apparatus 800 may include: a transceiving unit 810 and a processing unit 820.

In one possible design, the communication apparatus 800 may be the N3IWF in the above method embodiment, or may be a chip for implementing the functions of the N3IWF in the above method embodiment.

It should be understood that the apparatus 800 may correspond to the N3IWF of the methods 200-700 according to embodiments of the present application, and that the apparatus 800 may include means for performing the methods performed by the N3IWF of the methods 200-300 in fig. 4, 300 in fig. 5, 400 in fig. 6, 500 in fig. 7, 600 in fig. 8, and 900 in fig. 9. Also, the units and other operations and/or functions described above in the apparatus 800 are respectively for implementing corresponding flows of the method 200 in fig. 4, the method 300 in fig. 5, the method 400 in fig. 6, the method 500 in fig. 7, the method 600 in fig. 8, and the method 900 in fig. 9. It should be understood that, the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and are not described herein again for brevity.

In another possible design, the apparatus 800 may be the first terminal device in the foregoing method embodiment, and may also be a chip for implementing the function of the first terminal device in the foregoing method embodiment.

It is to be understood that the apparatus 800 may correspond to the first terminal device in the methods 200 to 700 according to embodiments of the present application, and that the apparatus 800 may include means for performing the methods performed by the first terminal device in the methods 200 in fig. 4, 300 in fig. 5, 400 in fig. 6, 500 in fig. 7, 600 in fig. 8, and 900 in fig. 9. Also, the units and other operations and/or functions described above in the apparatus 800 are respectively for implementing corresponding flows of the method 200 in fig. 4, the method 300 in fig. 5, the method 400 in fig. 6, the method 500 in fig. 7, the method 600 in fig. 8, and the method 900 in fig. 9. It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

In another possible design, the apparatus 800 may be a relay device in the foregoing method embodiment, and may also be a chip for implementing the function of the relay device in the foregoing method embodiment.

It should be understood that the apparatus 800 may correspond to the relay device in the methods 200 to 700 according to the embodiments of the present application, and that the apparatus 800 may include means for performing the methods performed by the relay device in the methods 200 in fig. 4, 300 in fig. 5, 400 in fig. 6, 500 in fig. 7, 600 in fig. 8, and 900 in fig. 9. Also, the units and other operations and/or functions described above in the apparatus 800 are respectively for implementing the corresponding flows of the method 200 in fig. 4, the method 300 in fig. 5, the method 400 in fig. 6, the method 500 in fig. 7, the method 600 in fig. 8, and the method 900 in fig. 9. It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

In another possible design, the apparatus 800 may be an access network device in the foregoing method embodiment, and may also be a chip for implementing the functions of the access network device in the foregoing method embodiment.

It should be understood that the apparatus 800 may correspond to the access network device in the methods 200 to 700 according to the embodiments of the present application, and the apparatus 800 may include means for performing the methods performed by the access network device in the method 200 in fig. 4, the method 300 in fig. 5, the method 400 in fig. 6, the method 500 in fig. 7, the method 600 in fig. 8, and the method 900 in fig. 9. Also, the units and other operations and/or functions described above in the apparatus 800 are respectively for implementing corresponding flows of the method 200 in fig. 4, the method 300 in fig. 5, the method 400 in fig. 6, the method 500 in fig. 7, the method 600 in fig. 8, and the method 900 in fig. 9. It should be understood that, the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and are not described herein again for brevity.

In another possible design, the apparatus 800 may be the second session management network element in the foregoing embodiment, or may be a chip for implementing the function of the second session management network element in the foregoing embodiment.

It should be understood that the apparatus 800 may correspond to the second session management network element in the methods 200 to 700 according to the embodiments of the present application, and the apparatus 800 may include means for performing the methods performed by the second session management network element in the method 200 in fig. 4, the method 300 in fig. 5, the method 400 in fig. 6, the method 500 in fig. 7, the method 600 in fig. 8, and the method 900 in fig. 9. Also, the units and other operations and/or functions described above in the apparatus 800 are respectively for implementing corresponding flows of the method 200 in fig. 4, the method 300 in fig. 5, the method 400 in fig. 6, the method 500 in fig. 7, the method 600 in fig. 8, and the method 900 in fig. 9. It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

It is further understood that the transceiving unit 810 in the apparatus 800 may correspond to the transceiver 920 in the device 900 shown in fig. 11, and the processing unit 820 in the apparatus 800 may correspond to the processor 910 in the device 900 shown in fig. 11.

It is also understood that when the apparatus 800 is a chip, the chip includes a transceiver unit and a processing unit. The transceiving unit can be an input/output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

The transceiving unit 810 is used for implementing transceiving operation of signals of the apparatus 800, and the processing unit 820 is used for implementing processing operation of signals of the apparatus 800.

Optionally, the apparatus 800 further comprises a storage unit 830, the storage unit 830 being configured to store the indication.

Fig. 11 is a schematic block diagram of a control device 900 for quality of service provided in an embodiment of the present application. As shown, the apparatus 900 includes: at least one processor 910 and a transceiver 920. The processor 910 is coupled to the memory for executing the instructions stored in the memory to control the transceiver 920 to transmit signals and/or receive signals. Optionally, the device 900 further comprises a memory 930 for storing the indication.

It will be appreciated that the processor 910 and the memory 930 may be combined into a single processing device, and that the processor 910 may be configured to execute program code stored in the memory 930 to implement the functions described above. In particular implementations, the memory 930 may be integrated with the processor 910 or may be separate from the processor 910.

It is also understood that the transceiver 920 may include a receiver (or, alternatively referred to as a receiver) and a transmitter (or, alternatively referred to as a transmitter). The transceiver 920 may further include one or more antennas. The transceiver 920 may be a communication interface or interface circuit.

When the device 900 is a chip, the chip includes a transceiver unit and a processing unit. The transceiving unit can be an input/output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. The embodiment of the application further provides a processing device which comprises a processor and an interface. The processor may be adapted to perform the method of the above-described method embodiments.

It should be understood that the processing means may be a chip. For example, the processing device may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

An embodiment of the present application further provides a communication system, which includes the aforementioned N3IWF, the first terminal device, the relay device, the access network device, and the first session management network element.

The present application also provides a computer-readable storage medium having stored therein instructions, which when executed on a computer, cause the computer to perform the steps performed by the N3IWF in the method described above and illustrated in fig. 4-9.

The present application further provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to perform the steps performed by the first terminal device in the method as shown in fig. 4-9.

The present application also provides a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to perform the steps performed by the relay device in the above-described method as shown in fig. 4-9.

The present application further provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to perform the steps performed by the session management network element of the relay device in the method as shown in fig. 4 to 9.

The present application further provides a computer-readable storage medium having instructions stored therein, which when executed on a computer, cause the computer to perform the steps performed by the access network device in the methods as described above in fig. 4-9.

The present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the steps performed by the N3IWF in the method as shown in fig. 4-9.

The present application also provides a computer program product comprising instructions for causing a computer to perform the steps performed by the first terminal device in the method as shown in fig. 4-9, when the computer program product runs on the computer.

The present application also provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the steps performed by the relay device in the method as shown in fig. 4-9.

The present application also provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the steps performed by the session management network element of the relay device in the method as shown in fig. 4-9.

The present application also provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the steps performed by the access network device in the method as shown in fig. 4-9.

The application also provides a chip comprising a processor. The processor is configured to read and execute the computer program stored in the memory to perform corresponding operations and/or processes performed by the N3IWF in the method for transmitting data provided by the present application. Optionally, the chip further comprises a memory, the memory is connected with the processor through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory. Further optionally, the chip further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, etc. The processor may also be embodied as a processing circuit or a logic circuit.

The application also provides a chip comprising a processor. The processor is configured to read and execute the computer program stored in the memory to perform corresponding operations and/or procedures performed by the first terminal device in the method for transmitting data provided by the present application. Optionally, the chip further comprises a memory, the memory is connected with the processor through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory. Further optionally, the chip further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, etc. The processor may also be embodied as a processing circuit or a logic circuit.

The application also provides a chip comprising a processor. The processor is configured to read and execute the computer program stored in the memory to perform corresponding operations and/or procedures performed by the relay device in the method for transmitting data provided by the present application. Optionally, the chip further comprises a memory, the memory is connected with the processor through a circuit or an electric wire, and the processor is used for reading and executing the computer program in the memory. Further optionally, the chip further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving the processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, etc. The processor may also be embodied as a processing circuit or a logic circuit.

The application also provides a chip comprising a processor. The processor is configured to read and execute the computer program stored in the memory to perform corresponding operations and/or procedures performed by the session management network element of the relay device in the method for transmitting data provided by the present application. Optionally, the chip further comprises a memory, the memory is connected with the processor through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory. Further optionally, the chip further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving the processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, etc. The processor may also be embodied as a processing circuit or a logic circuit.

The application also provides a chip comprising a processor. The processor is configured to read and execute the computer program stored in the memory to perform corresponding operations and/or procedures performed by the access network device in the method for transmitting data provided by the present application. Optionally, the chip further comprises a memory, the memory is connected with the processor through a circuit or a wire, and the processor is used for reading and executing the computer program in the memory. Further optionally, the chip further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving the processed data and/or information, and the processor acquires the data and/or information from the communication interface and processes the data and/or information. The communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, etc. The processor may also be embodied as a processing circuit or a logic circuit.

The chip can be replaced by a chip system, which is not described herein again.

The terms "comprises," "comprising," and "having," and any variations thereof, in this application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual conditions to achieve the purpose of the scheme of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium, which includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

In addition, the term "and/or" in the present application is only one kind of association relationship describing the associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship; the term "at least one" in this application may mean "one" and "two or more", e.g. at least one of a, B and C may mean: a exists alone, B exists alone, C exists alone, A and B exist together, A and C exist together, C and B exist together, A and B exist together, and A, B and C exist together, which are seven cases.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for controlling quality of service, comprising:

a non-3GPP interworking function N3IWF receives first QoS notification control QNC information corresponding to a first QoS flow from a first session management network element, wherein the first QNC information is used for indicating that notification information is sent when the service quality of the first QoS flow does not meet the service quality requirement, the first QoS flow is used for transmitting data of a first service between first terminal equipment and a data network, and the first session management network element provides service for the first terminal equipment;

and the N3IWF sends second QNC information to the first terminal equipment through the relay equipment, wherein the second QNC information is used for indicating that notification information is sent when the service quality of the first QoS flow does not meet the service quality requirement.

2. The method of claim 1, wherein the first QNC information comprises an identification of the first QoS flow; the second QNC information comprises the identification of the first QoS flow and first flow description information, and the first flow description information comprises the address of the N3IWF and a security parameter index SPI corresponding to the first QoS flow.

3. The method of claim 1 or 2, further comprising:

the N3IWF receives first notification information from the first terminal equipment, wherein the first notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement;

and the N3IWF sends the first notification information to the first session management network element.

4. The method according to claim 1 or 2, characterized in that the method further comprises:

the N3IWF receives second notification information from the relay device, a second session management network element or an access network device through an SPI corresponding to a first Uu port QoS flow, wherein the second notification information is used for notifying that the service quality of the first Uu port QoS flow does not meet the service quality requirement, the first Uu port QoS flow is used for transmitting data of the first service for the first terminal device between the relay device and the access network device, the first Uu port QoS flow is the Uu port QoS flow corresponding to the first QoS flow, and the second session management network element provides service for the relay device;

and the N3IWF sends third notification information to the first session management network element according to the second notification information and the corresponding relation between the SPI and the first QoS flow, wherein the third notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

5. A method for controlling quality of service, comprising:

the first terminal equipment receives second quality of service (QoS) notification control (QNC) information from a non-3GPP interworking function (N3 IWF), wherein the second QNC information is used for indicating that notification information is sent when the service quality of the first QoS flow does not meet the service quality requirement, and the first QoS flow is used for transmitting data of a first service between the first terminal equipment and a data network;

the first terminal equipment sends third QNC information to relay equipment according to the second QNC information and a first PC5 port QoS flow corresponding to the first QoS flow, wherein the third QNC information is used for indicating that notification information is sent when the service quality of a Uu port QoS flow corresponding to the first PC5 port QoS flow does not meet the service quality requirement;

the first PC5 port QoS flow is configured to transmit data of the first service between the first terminal device and the relay device, and the Uu port QoS flow corresponding to the first PC5 port QoS flow is configured to transmit data of the first service for the first terminal device between the relay device and the access network device.

6. The method of claim 5, wherein the second QNC information comprises an identifier of the first QoS flow and second flow description information, and wherein the second flow description information comprises an address of the N3IWF and a Security Parameter Index (SPI) corresponding to the first QoS flow; the third QNC information includes an identifier of the first PC5 port QoS flow and third flow description information, where the third flow description information includes an address of the N3IWF and an SPI corresponding to the first PC5 port QoS flow.

7. The method of claim 5 or 6, further comprising:

the first terminal device receives fourth notification information from the relay device, wherein the fourth notification information is used for notifying that the service quality of the Uu port QoS stream corresponding to the first PC5 port QoS stream does not meet the service quality requirement;

and the first terminal equipment sends first notification information to the N3IWF according to the fourth notification information, wherein the first notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

8. The method of claim 7, wherein the first terminal device sends the first notification information to the N3IWF according to the fourth notification information, comprising:

the first terminal equipment sends the first notification information to the N3IWF according to the fourth notification information and the corresponding relation between the first PC5 port QoS flow and the first QoS flow; or the like, or a combination thereof,

and the first terminal equipment sends the first notification information to the N3IWF through the SPI corresponding to the first QoS flow according to the fourth notification information.

9. The method of claim 5 or 6, further comprising:

when the first terminal equipment detects that the service quality of the QoS flow of the first PC5 port does not meet the service quality requirement, the first terminal equipment sends the first notification information to the N3 IWF; or

The first terminal equipment receives fifth notification information from the relay equipment, the first terminal equipment sends the first notification information to the N3IWF according to the fifth notification information, and the fifth notification information is used for notifying that the service quality of the QoS flow of the first PC5 port does not meet the service quality requirement;

the first notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

10. The method of claim 9, wherein the first terminal device sends the first notification information to the N3IWF according to the fifth notification information, comprising:

the first terminal equipment sends the first notification information to the N3IWF according to the fifth notification information and the corresponding relation between the first PC5 port QoS flow and the first QoS flow; or

And the first terminal equipment sends the first notification information to the N3IWF through the SPI corresponding to the first QoS flow according to the fifth notification information.

11. A method for controlling quality of service, comprising:

the relay equipment receives third QNC information from first terminal equipment, wherein the third QNC information is used for indicating that notification information is sent when the service quality of a Uu port QoS flow corresponding to a first PC5 port QoS flow does not meet the service quality requirement, and the first PC5 port QoS flow is used for transmitting data of a first service between the relay equipment and the first terminal equipment;

and the relay equipment sends fourth QNC information to a second session management network element according to the third QNC information and the Uu port QoS flow corresponding to the first PC5 port QoS flow, where the fourth QNC information is used to indicate that notification information is sent when the quality of service of the first Uu port QoS flow does not meet the quality of service requirement, the second session management network element provides service for the relay equipment, the first Uu port QoS flow is the Uu port QoS flow corresponding to the first PC5 port QoS flow, and the first Uu port QoS flow is used to transmit data of the first service for the first terminal equipment between the relay equipment and an access network.

12. The method according to claim 11, wherein the third QNC information includes an identifier of the first PC5 QoS flow and third flow description information, and the third flow description information includes an address of a non-3GPP interworking function N3IWF and a security parameter index SPI corresponding to the first PC5 QoS flow; the fourth QNC information includes fourth flow description information, the fourth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow, and the N3IWF is configured to transmit the data of the first service to the first terminal device.

13. The method of claim 11 or 12, wherein the third QNC information is carried in a session modification request message.

14. The method of claim 12, further comprising:

the relay device receives sixth notification information from the second session management network element or the access network device, where the sixth notification information is used to notify that the quality of service of the first Uu port QoS flow does not meet a quality of service requirement;

the relay device sends fourth notification information to the first terminal device according to the sixth notification information and the corresponding relationship between the identifier of the first Uu port QoS flow and the identifier of the first PC5 port QoS flow, wherein the fourth notification information is used for notifying that the service quality of the Uu port QoS flow corresponding to the first PC5 port QoS flow does not meet the service quality requirement; or

And the relay equipment sends second notification information to the N3IWF through the SPI corresponding to the QoS flow of the first Uu port according to the sixth notification information, wherein the second notification information is used for notifying that the QoS flow of the first Uu port does not meet the QoS requirement, and the N3IWF is used for transmitting the data of the first service to the first terminal equipment.

15. A method for controlling quality of service, comprising:

a second session management network element receives fourth QoS Notification Control (QNC) information from a relay device, wherein the fourth QNC information is used for indicating that notification information is sent when the QoS of a first Uu port QoS flow does not meet the QoS requirement, the first Uu port QoS flow is used for transmitting data of a first service for a first terminal device between the relay device and an access network device, and the second session management network element provides service for the relay device;

and the second session management network element sends fifth QNC information to the access network device, where the fifth QNC information is used to indicate that notification information is sent when the QoS of the first Uu port QoS flow does not meet QoS requirements.

16. The method of claim 15, wherein the fourth QNC information comprises fourth flow description information, and wherein the fourth flow description information comprises an address of a non-3GPP interworking function N3IWF and a security parameter index SPI corresponding to the first Uu port QoS flow; the fifth QNC information includes an identifier of the first Uu port QoS flow and/or fifth flow description information, where the fifth flow description information includes an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow, and the N3IWF is configured to transmit data of the first service to the first terminal device.

17. The method of claim 16, further comprising:

the second session management network element receives sixth notification information from the access network device, where the sixth notification information is used to notify that the quality of service of the first Uu port QoS flow does not meet a quality of service requirement;

the second session management network element sends the sixth notification information to the relay device; or

And the second session management network element sends the second notification information to the N3IWF through the SPI corresponding to the first Uu port QoS stream according to the sixth notification information, where the second notification information is used to notify that the quality of service of the first Uu port QoS stream does not meet the quality of service requirement.

18. A method for controlling quality of service, comprising:

the access network equipment receives fifth QoS notification control QNC information from a second session management network element, wherein the fifth QNC information is used for indicating that notification information is sent when the QoS of a first Uu port QoS flow does not meet the QoS requirement, the first Uu port QoS flow is used for transmitting data of a first service for first terminal equipment between relay equipment and the access network equipment, and the second session management network element provides service for the relay equipment;

when the service quality of the first Uu port QoS flow does not meet the service quality requirement, the access network device sends sixth notification information to the second session management network element or the relay device, where the sixth notification information is used to notify that the service quality of the first Uu port QoS flow does not meet the service quality requirement; or

When the service quality of the first Uu port QoS flow does not meet the service quality requirement, the access network equipment sends second notification information to a non-3GPP interworking function N3IWF through a security parameter index SPI corresponding to the first Uu port QoS, the second notification information is used for notifying that the service quality of the first Uu port QoS flow does not meet the service quality requirement, and the N3IWF is used for transmitting data of the first service for the first terminal equipment.

19. The method of claim 18, wherein the fifth QNC information comprises an identifier of the first Uu port QoS flow and/or fifth flow description information, and wherein the fifth flow description information comprises an address of the N3IWF and an SPI corresponding to the first Uu port QoS flow.

20. A method for controlling quality of service, comprising:

a non-3GPP interworking function N3IWF receives notification control QNC information corresponding to a first QoS flow from a first session management network element, wherein the first QNC information is used for indicating that notification information is sent when the QoS of the first QoS flow does not meet the QoS requirement, the first QoS flow is used for transmitting data of a first service between first terminal equipment and a data network, and the first session management network element provides service for the first terminal equipment;

and the N3IWF sends sixth QNC information to a second session management network element, wherein the sixth QNC information is used for indicating that notification information is sent when the service quality of a first Uu port QoS flow borne by the data of the first service does not meet the service quality requirement, and the first Uu port QoS flow is a QoS flow which is distributed by the second session management network element and is used for bearing the data of the first service.

21. The method of claim 20, wherein the first QNC information comprises an identification of the first QoS flow; the sixth QNC information includes sixth flow description information, and the sixth flow description information includes an address of the N3IWF and a security parameter index SPI corresponding to the first QoS flow.

22. The method according to claim 20 or 21, wherein the N3IWF sends sixth QNC information to the second session management network element, comprising:

the N3IWF sends the sixth QNC information to the second session management network element through PCF and/or NEF; or

The N3IWF sends the sixth QNC information to the second session management network element through UPF;

wherein the PCF, the NEF and the UPF provide service for the relay device.

23. The method of claim 22, further comprising:

the N3IWF receives a seventh notification message from the second session management network element, where the seventh notification message is used to notify that the QoS of a first Uu port QoS flow does not meet the QoS requirement, and the first Uu port QoS flow is used to transmit the data of the first service for the first terminal device between the relay device and the access network device;

the seventh notification message is received through an SPI corresponding to the first QoS flow; or the seventh notification message includes an SPI corresponding to the first QoS flow;

and the N3IWF sends eighth notification information to the first session management network element according to the seventh notification information and the corresponding relationship between the SPI and the identifier of the first QoS flow, wherein the eighth notification information is used for notifying that the service quality of the first QoS flow does not meet the service quality requirement.

24. A method for controlling quality of service, comprising:

a second session management network element receives sixth QoS notification control QNC information from a non-3GPP interworking function N3IWF, wherein the sixth QNC information is used for indicating that notification information is sent when the QoS of a first Uu port QoS flow borne by data of a first service does not meet the QoS requirement, and the first Uu port QoS flow is a QoS flow which is distributed by the second session management network element and used for bearing the data of the first service;

and the second session management network element sends seventh QNC information to the access network device according to the sixth QNC information, where the seventh QNC information is used to indicate that notification information is sent when the quality of service of a first Uu port QoS flow does not meet a quality of service requirement, the first Uu port QoS flow is a Uu port QoS flow corresponding to the first QoS flow, the first QoS flow is used to transmit data of a first service for the first terminal device between the first terminal device and the data network, the first Uu port QoS flow is used to transmit data of the first service for the first terminal device between the relay device and the access network device, and the second session management network element provides services for the relay device.

25. The method of claim 24, wherein the sixth QNC information comprises sixth flow description information, and wherein the sixth flow description information comprises an address of the N3IWF and a security parameter index SPI corresponding to the first QoS flow; the seventh QNC information includes an identification of the first Uu port QoS flow.

26. The method of claim 25, further comprising:

the second session management network element receives ninth notification information from the access network device, where the ninth communication information is used to notify that the QoS of the first Uu port QoS flow does not meet the QoS requirement;

the second session management network element sends seventh notification information to the N3IWF according to the ninth notification information, where the seventh notification information is used to notify that the QoS of the first Uu port QoS stream does not meet the QoS requirement;

the seventh notification information is sent through the SPI corresponding to the first QoS flow; or the seventh notification information includes the SPI corresponding to the first QoS flow.

27. The method of claim 26, wherein the sending, by the second session management network element, seventh notification information to the N3IWF comprises:

the second session management network element sends seventh notification information to the N3IWF through PCF and/or NEF; or

The second session management network element sends seventh notification information to the N3IWF through the UPF;

wherein the PCF, the NEF and the UPF provide service for the relay device.

28. A control device for quality of service, characterized by being adapted to perform the method of any one of claims 1-4, or to perform the method of any one of claims 5-10, or to perform the method of any one of claims 11-14, or to perform the method of any one of claims 15-17, or to perform the method of any one of claims 18-19, or to perform the method of any one of claims 20-23, or to perform the method of any one of claims 24-27.

29. A computer-readable storage medium, comprising computer instructions which, when executed by a processor, cause the computer to perform the method of any one of claims 1-4, or cause the computer to perform the method of any one of claims 5-10, or cause the computer to perform the method of any one of claims 11-14, or cause the computer to perform the method of any one of claims 15-17, or cause the computer to perform the method of any one of claims 18-19, or cause the computer to perform the method of any one of claims 20-23, or cause the computer to perform the method of any one of claims 24-27.

30. A chip arrangement, characterized by comprising processing circuitry for calling up and running a program from a memory, causing a communication device in which the chip arrangement is installed to perform a method according to any one of claims 1 to 4, or causing the communication device in which the chip arrangement is installed to perform a method according to any one of claims 5 to 10, or causing the communication device in which the chip arrangement is installed to perform a method according to any one of claims 11 to 14, or causing the communication device in which the chip arrangement is installed to perform a method according to any one of claims 15 to 17, or causing the communication device in which the chip arrangement is installed to perform a method according to any one of claims 18 to 19, or causing the communication device in which the chip arrangement is installed to perform a method according to any one of claims 20 to 23, or causing the communication device in which the chip arrangement is installed to perform a method according to any one of claims 24 to 27.

31. A communication system, characterized in that the communication system comprises: a non-3GPP interworking function N3IWF, relay equipment, access network equipment and a second session management network element;

the N3IWF is configured to perform the method of any one of claims 1-4; or for performing the method of any one of claims 20-23;

the relay device is configured to perform the method of any of claims 11-14;

the second session management network element is configured to perform the method of any of claims 15-17; or for performing the method of any one of claims 24-27; the second session management network element provides service for the relay device;

the access network apparatus is configured to perform the method of any of claims 18-19.

32. A communication system according to claim 31, characterized in that the communication system further comprises a first terminal device adapted to perform the method according to any of claims 5-10.