CN109392024B

CN109392024B - Method for controlling service quality flow and related equipment

Info

Publication number: CN109392024B
Application number: CN201710684908.2A
Authority: CN
Inventors: 吴义壮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2021-06-15
Anticipated expiration: 2037-08-11
Also published as: WO2019029581A1; CN109392024A; CN113556785A

Abstract

The embodiment of the application discloses a method for controlling service quality flow and related equipment. The method comprises the following steps: an access network node receives a first message sent by an access and mobility management functional entity, wherein the first message comprises a first identifier and a reflection service quality mechanism indication, and the first identifier is used for identifying a service quality flow; and the access network node sends a first data packet carrying the first identifier or a second identifier to a terminal according to the indication of the reflection service quality mechanism, wherein the second identifier corresponds to the first identifier.

Description

Method for controlling service quality flow and related equipment

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method for controlling a quality of service flow and a related device.

Background

Wireless networks have become widely used, with more and more traffic being carried over the wireless networks. Due to the scarcity of radio resources and the special requirements of certain services, access control, resource allocation and scheduling needs to be implemented by Quality of service (QoS) rules. For example, when a user is making a call, if other users start downloading a file, the downloading of the file may preempt the voice call resource due to scarcity of wireless resources, so that the voice call is interrupted. In order to guarantee the quality of the voice call, it is necessary to ensure that the voice call has higher priority for resource allocation and use than downloading the file. When the wireless resource is insufficient, the wireless resource request for downloading the file is ensured not to occupy the wireless resource of the voice call. In addition, if the voice call services belong to the same priority, in order to ensure that the voice call of one user does not interfere with the voice call of another user, it is necessary to ensure that the wireless resources of the voice call are always independent, rather than shared, during the call. Therefore, the radio resources of some services must guarantee the resource priority, and the radio resources of some services (e.g. file download, Email download) can be shared.

In order to guarantee the QoS of service transmission in the fifth Generation mobile communication technology (5-Generation, 5G) system, a mechanism for controlling the granularity of a quality of service flow (QoS flow) based on a User Equipment (UPF) (end-to-end) is proposed, that is, a data packet controlled by the same QoS flow is used for performing the same transmission processing, such as processing priority, packet delay, packet loss rate, bit rate, and the like. The QoS flow includes QoS flow of Guaranteed Bit Rate (GBR) and QoS flow of Non-guaranteed Bit Rate (Non-GBR). The QoS parameters included in the QoS Flow of GBR include a 5G QoS Indicator (5G QoS Indicator, 5QI), a Guaranteed Flow Bit Rate (GFBR), a Maximum Flow Bit Rate (MFBR), a Notification (Notification), and ARP. The QoS flow of Non-GBR contains QoS parameters including 5QI and ARP. Each QoS flow is identified by a quality of service flow Identity (QFI), which is at least 7 bits long. The existing QoS implementation mechanisms include a Non-Reflective QoS (Non-Reflective QoS) mechanism and a Reflective QoS (Reflective QoS) mechanism, and no matter what QoS mechanism is used, each data packet of an air interface needs to carry QFI, which inevitably results in waste of air interface resources.

Disclosure of Invention

The embodiment of the application provides a method for controlling a service quality flow and related equipment, which can effectively solve the problem of air interface resource waste.

In a first aspect, an embodiment of the present application provides a method for controlling a quality of service flow, including:

the access network node firstly receives a first message sent by an access and mobility management functional entity, wherein the first message comprises a first identifier and a reflection service quality mechanism indication, and the first identifier is used for identifying a service quality flow; and then, according to the indication of the reflection service quality mechanism, sending a first data packet carrying a first identifier or a second identifier to the terminal, wherein the second identifier corresponds to the first identifier, and determining whether the data packet carries a service quality stream identifier or not through the indication of the service quality mechanism, so that the aim of saving air interface resources is fulfilled.

In a possible design, after receiving the first message, the access network node allocates a second identifier corresponding to the first identifier, stores a corresponding relationship between the first identifier and the second identifier, and sends the first identifier and the second identifier to the terminal, and the terminal establishes a corresponding relationship between the first identifier and the second identifier, so that the terminal can send a data packet carrying the second identifier, and occupation of air interface resources is reduced.

In another possible design, after receiving the first message, the access network node allocates a second identifier corresponding to the first identifier, stores a corresponding relationship between the first identifier and the second identifier, and sends a radio resource control message to the terminal, where the radio resource control message includes the first identifier and the second identifier, and the terminal establishes the corresponding relationship between the first identifier and the second identifier, so that the terminal can send a data packet carrying the second identifier, and occupation of air interface resources is reduced.

In another possible design, after receiving the first message, if a data packet including the first identifier is received, the access network node allocates a second identifier corresponding to the first identifier, stores a corresponding relationship between the first identifier and the second identifier, and sends a second data packet to the terminal, where the second data packet includes the first identifier and the second identifier, and the terminal establishes the corresponding relationship between the first identifier and the second identifier, so that the terminal can send the data packet including the second identifier, and occupation of air interface resources is reduced.

In another possible design, the terminal may send a third data packet carrying the second identifier to the access network node according to the correspondence between the second identifier and the first identifier. And after receiving the third data packet carrying the second identifier, the access network node sends a fourth data packet carrying the first identifier to the user plane functional entity according to the stored corresponding relationship between the second identifier and the first identifier. Because the bit number of the second identifier is less than that of the first identifier, the air interface resource between the access network node and the terminal is saved.

In another possible design, when the session management function entity determines to deactivate the Reflective QoS mechanism, an indication of deactivation of the reflected quality of service mechanism may be sent to the access network node. And when the access network node receives the data packet using the Reflective QoS rule, the access network node sends the data packet containing the second identifier and the DRQI to the terminal. And after receiving the data packet containing the DRQI, the terminal deletes the corresponding QoS rule.

In another possible design, after receiving a data packet sent by a user plane functional entity, if the data packet does not include a first identifier, the access network node does not include any identifier of QoS flow in the first data packet sent to the terminal, thereby reducing occupation of air interface resources. If the data packet includes the first identifier, the access network node may send the first data packet carrying the second identifier to the terminal, and since the bit number of the second identifier is less than the bit number of the first identifier, air interface resources between the access network node and the terminal are saved.

In another possible design, the access network node may receive a first message sent by the access and mobility management functional entity, where the first message may include reflective QoS information or non-reflective QoS information. And the access network node allocates a second identifier if the first message contains the first identifier, and sends the first identifier and the second identifier to the terminal. After receiving a data packet carrying a first identifier and sent by a user plane functional entity, an access network node may send a data packet carrying a second identifier to a terminal, where the second identifier corresponds to the first identifier, and since the bit number of the second identifier is less than the bit number of the first identifier, the occupation of air interface resources is reduced.

In another possible design, the access network node receives a first data packet carrying a first identifier sent by the user plane functional entity, determines to allocate a second identifier, and sends the first identifier and the second identifier to the terminal, and after the access network node receives the second data packet carrying the first identifier, the access network node may send a second data packet carrying the second identifier to the terminal according to a corresponding relationship between the first identifier and the second identifier. The bit number of the second identification is less than that of the first identification, so that the occupation of the air interface resource is reduced.

In another possible design, the access network node sends first indication information to the terminal, where the first indication information is used to notify that a service data adaptation protocol packet data unit of a data radio bearer corresponding to a terminal service quality flow includes a header of the service data adaptation protocol.

In another possible design, the access network node sends second indication information to the terminal, where the second indication information is used to notify the terminal that a data packet transmitted on the data radio bearer uses a reflection service quality mechanism, and an air interface resource between the access network node and the terminal is saved by using the reflection service quality mechanism.

In another possible design, the access network node establishes a data radio bearer, where the data radio bearer is used by the qos flow corresponding to the first identifier alone and is not shared with other qos flows.

In a second aspect, an embodiment of the present application provides a method for controlling a quality of service flow, including:

a terminal firstly receives a first identifier and a second identifier of an access network node, wherein the first identifier is used for identifying a service quality flow, the second identifier corresponds to the first identifier, and the bit number of the second identifier is less than that of the first identifier; and then sending a data packet carrying a second identifier to the access network node according to the corresponding relation between the first identifier and the second identifier, wherein the number of bits of the second identifier is less than that of the first identifier, so that air interface resources between the access network node and the terminal are saved.

In a possible design, the terminal may receive a data packet carrying a second identifier sent by an access network node, determine the first identifier according to a correspondence between the first identifier and the second identifier, further identify the QoS flow, and select a corresponding DRB for data transmission.

In another possible design, the terminal receives first indication information sent by an access network node; and processing a message header of a service data adaptation protocol contained in a service data adaptation protocol packet data unit of a data radio bearer corresponding to the service quality flow according to the first indication information.

In another possible design, the terminal receives second indication information sent by the access network node; the data packets transmitted on the data radio bearer use a reflected quality of service mechanism in accordance with the second indication information.

In a third aspect, an embodiment of the present application provides an access network node, where the access network node is configured to implement the method and the functions performed by the access network node in the first aspect, and the access network node is implemented by hardware/software, where the hardware/software includes units corresponding to the functions.

In a fourth aspect, the present application provides a terminal configured to implement the method and the functions performed by the terminal in the second aspect, where the terminal is implemented by hardware/software, and the hardware/software includes units corresponding to the functions.

In a fifth aspect, the present application provides another access network node, comprising: the control method comprises a processor, a memory and a communication bus, wherein the communication bus is used for realizing connection communication between the processor and the memory, and the processor executes a program stored in the memory for realizing the steps in the control method for the service quality flow provided by the first aspect.

In a sixth aspect, the present application provides another terminal, including: the control method comprises a processor, a memory and a communication bus, wherein the communication bus is used for realizing connection communication between the processor and the memory, and the processor executes a program stored in the memory for realizing the steps in the control method of the quality of service flow provided by the second aspect.

In one possible design, the access network node provided in the present application may include a module for performing behavior correspondence of the access network node in the above method design. The modules may be software and/or hardware.

In one possible design, the terminal provided by the present application may include a module for performing the corresponding terminal behavior in the above method design. The modules may be software and/or hardware.

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

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

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

Fig. 1(a) is a schematic architecture diagram of a reference point-based wireless network system according to an embodiment of the present application;

fig. 1(B) is a schematic architecture diagram of a service-based wireless network system according to an embodiment of the present application;

FIG. 2 is a diagram illustrating a QoS architecture according to an embodiment of the present application;

fig. 3 is a schematic diagram of data transmission of a Non-reflective QoS mechanism according to an embodiment of the present application;

fig. 4(a) is a schematic data transmission diagram of a user plane activated Reflective QoS mechanism according to an embodiment of the present application;

fig. 4(B) is a schematic data transmission diagram of a control plane activated Reflective QoS mechanism according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a method for controlling a quality of service flow according to an embodiment of the present application;

fig. 6 is a flowchart illustrating another method for controlling a quality of service flow according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a method for controlling a quality of service flow according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an access network node according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another access network node according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another terminal according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

Referring to fig. 1(a) and fig. 1(B), fig. 1(a) is an architecture diagram of a reference point-based wireless network system provided in an embodiment of the present application, where a direct interface exists between communication nodes in the architecture diagram, and fig. 1(B) is an architecture diagram of a service-based wireless network system provided in the present application, where the communication nodes in the architecture diagram communicate via a service-based interface, and the service-based interface can provide or open a set of services to a network function unit. The wireless Network system mainly includes AN Access and mobility Management Network element (AMF), AN Access Network node (AN), a terminal, a User Plane Function (UPF), a Session Management Function (SMF), and a Policy and Charging Function (PCF). The wireless Network system also includes a Data Network (DN), AN Application Function entity (AF), AN Authentication Server Function entity (AUSF) and a Unified Data Management (UDM), wherein UPF is mainly responsible for user plane related functions such as packet routing transmission, packet detection, Service usage reporting, QoS processing, lawful interception, uplink packet detection, downlink packet storage, etc And policy-related functions such as policy control and acquisition of subscription information related to policy decision from the UDR are provided.

For simplicity, the structural diagram only shows the necessary functional entities and interface information, but the wireless network is not limited to only include the functional entities and interfaces. The structural diagram is an illustration of the present application, and the present application is applicable to the structural diagram and the variant structure thereof.

Based on the architecture of the wireless network system, a control mode based on end-to-end QoS flow granularity is provided. Specifically, the same QoS flow controlled data packet is used for the same transmission processing, such as processing priority, packet delay, packet loss rate, bit rate, and the like. As shown in fig. 2, fig. 2 is a schematic diagram of a QoS architecture provided in an embodiment of the present application. The method comprises the following steps: at least one Packet Data Unit (PDU) Session (Session) is established between the terminal and the 5G core network, and the RAN establishes at least one Data Radio Bearer (DRB) for each PDU Session. The Access Stratum (Access Stratum AS) and RAN of the terminal associate the QoS flow of uplink and downlink to the DRB. The Non-Access Stratum (NAS) and the UPF of the terminal map the uplink and downlink packets onto one QoS flow. Further, the QFI carried by the data packet transmitted by the terminal and the UPF, and the QFI in the data packet received by the Access Network (AN) device, determine the QoS flow used for transmitting the data packet, and select the corresponding DRB.

The embodiment of the present application mainly provides an improvement measure for data transmission under a Non-reflective QoS mechanism and a reflective QoS mechanism, and therefore, a data transmission mode under the Non-reflective QoS mechanism and a data transmission mode under the reflective QoS mechanism are specifically described below.

As shown in fig. 3, fig. 3 is a schematic diagram of data transmission under a Non-reflective QoS mechanism according to an embodiment of the present application. When a network side needs to establish a QoS flow, the SMF sends QoS rules of uplink and downlink data packets to the terminal through an N1 interface, and sends the QoS rules of the uplink and downlink data packets to the UPF through an N4 interface. The method specifically comprises the following steps: in the downlink direction, the UPF determines the QoS flow of the downlink packet according to the received QoS rule, and sends the downlink packet containing the QFI to the AN through the N3 tunnel. And the AN determines QoS flow according to the QFI in the header of the received downlink data packet, selects a corresponding DRB, and sends the data packet containing the QFI to the terminal through the DRB of the air interface. In the uplink direction, the terminal determines the QoS flow contained in the uplink data according to the QoS rule, selects the corresponding DRB, and contains QFI in the packet header of the uplink data packet. After receiving the upstream data packet, the AN sends the upstream data packet containing the QFI to the UPF through the N3 tunnel, so that the UPF verifies whether the corresponding data packet uses the correct QoS flow.

Under the Reflective QoS mechanism, the terminal can generate a QoS rule of an uplink data packet according to a received downlink data packet. As shown in fig. 4(a), fig. 4(a) is a schematic diagram of data transmission under a Reflective QoS mechanism activated by a user plane according to an embodiment of the present application. The method specifically comprises the following steps: the SMF issues a Reflective QoS rule to the UPF through an N4 interface, and indicated packet filters (packet filters) use the Reflective QoS rule. When the UPF receives the downlink data packet matching the Reflective QoS rule, the downlink data packet includes an indication of a Reflective quality of service mechanism (RQI). And when the terminal receives the downlink data packet containing the RQI, generating a corresponding QoS rule. As shown in fig. 4(B), fig. 4(B) is a schematic diagram of data transmission under a control plane activated Reflective QoS mechanism according to an embodiment of the present application. The method specifically comprises the following steps: the SMF sends a QFI (quad flat interface) or session Reflective QoS (quality of service) rule to the terminal, and when the terminal receives a downlink data packet carrying the QFI, the QoS rule of a corresponding uplink packet filter is generated. The parameters of the QoS rule mainly include QFI, Packet filter, and priority value (precedence value), among others.

Through the introduction of the data transmission under the Non-reflective QoS mechanism and the reflective QoS mechanism, it can be seen that each data packet of the air interface needs to carry QFI, and because the length of the QFI is long, the waste of air interface resources is caused.

Fig. 5 is a flowchart illustrating a method for controlling a quality of service flow according to an embodiment of the present application. Including but not limited to the following steps:

s501, the SMF establishes a new QoS flow or modifies a QoS flow, and the QoS flow uses a Reflective QoS mechanism to initiate a PDU modification flow.

S502, the SMF sends a Session Management (SM) request to the AMF, where the Session Management request includes QFI and Reflective QoS mechanism Indicator (RQI), and the RQI may indicate activation of the Reflective QoS mechanism or include other indications, such as Reflective QoS Attribute (RQA). Optionally, the session management request may further include parameters of QoS flow corresponding to QFI, including 5QI and ARP. When the Reflective QoS mechanism of the per session needs to be activated, the session management request further includes a packet data unit session identification (PDU session ID).

The AMF sends a first message to the AN S503, where the first message may be a request of N2. The N2 request includes a QFI and a RQI. Optionally, the N2 request further includes a QoS flow parameter corresponding to the QFI, such as: 5QI and ARP, etc.

S504, after receiving the first message, the AN generates a corresponding Reflective QoS rule according to the RQI, and then sends AN N2 request confirmation message to the AMF.

S505, the AMF sends a session management response to the SMF.

S506, the SMF initiates an N4 session modification procedure to the UPF.

It should be noted that, after the AN receives the N2 request sent by the AMF, it is determined whether AN RQI is included in the N2 request. If the request of N2 does not include RQI, the first data packet sent to the terminal does not include any QoS flow identifier, thereby reducing the occupation of air interface resources. And if the request of N2 includes RQI, activating a Reflective QoS mechanism, and sending a first data packet carrying a first identifier to the terminal, wherein the first identifier can be QFI. However, because the QFI has a long length and occupies more air interface resources, in order to further reduce the occupation of the air interface resources, the first data packet carrying the second identifier may be sent to the terminal, where the second identifier may include an air interface Flow identifier (RFI) or an identifier in another form. Wherein the number of bits of the second identifier is less than the number of bits of the first identifier. For example, since a QoS flow contains various QoS parameters, at least 7 bits of QFI are required to identify the QoS flow, while RFI may be 2 bits, such as 00, 10, 11 or 01, which is obviously less than the number of bits occupied by QFI. Three alternatives are used for the purpose that both the terminal and the AN can recognize RFI.

The first mode comprises the following steps:

s507a, after the AN receives the N2 request, if the N2 request comprises RQI, RFI corresponding to QFI is distributed, and the corresponding relation between RFI and QFI is stored.

S508a, the AN sends RFI and QFI to the terminal.

S509a, the terminal establishes the corresponding relation between RFI and QFI.

S510a, the terminal sends a completion message to the AN.

S511a, after the operation steps of S507a-S510a are completed, correspondence of RFI and QFI is saved at both the AN terminal and the terminal. After the AN receives the data packet sent by the UPF, if the data packet does not include the QFI, the first data packet sent to the terminal does not contain any QoS flow identification. If the data packet includes QFI, the AN may send a first data packet carrying RFI to the terminal, and after the terminal receives the first data packet carrying RFI, the QFI may be determined according to a correspondence between RFI and QFI, and a corresponding DRB may be selected for data transmission.

The second way includes:

s507b, after the AN receives the N2 request, if the N2 request comprises RQI, RFI corresponding to QFI is distributed, and the corresponding relation between RFI and QFI is stored.

S508b, the AN sends a radio resource control message to the terminal, and further initiates a DRB setup or update request, where the radio resource control message includes RFI and QFI. Optionally, the rrc message further includes a Data Radio Bearer Identity (DRB ID).

S509b, after receiving the radio resource control message, the terminal establishes a new DRB, and stores the corresponding relationship between QFI, RFI and DRB ID.

S510b, the terminal sends a DRB setup complete message to the AN.

S511b, after the operation steps of S507b-S510b are completed, correspondence of RFI and QFI is saved at both the AN terminal and the terminal. After the AN receives the data packet sent by the UPF, if the data packet does not include the QFI, the first data packet sent to the terminal does not contain any QoS flow identification. If the data packet includes QFI, the AN may send a first data packet carrying RFI to the terminal, and after the terminal receives the data packet carrying RFI, the terminal may determine QFI according to a correspondence between RFI and QFI, and select a corresponding DRB for data transmission.

The third mode comprises the following steps:

s507c, after executing S503, if the data packet sent by the UPF received by the AN includes QFI, assigning RFI corresponding to the QFI, and storing the correspondence between RFI and QFI.

S508c, the AN sends a second packet to the terminal, where the second packet includes RFI and QFI.

S509c, the terminal stores the corresponding relationship between the QFI and the RFI after receiving the second packet.

S510c, after completing the operation steps of S507c-S509c, the correspondence relationship between RFI and QFI is saved at both the AN end and the terminal. After the AN receives the data packet sent by the UPF, if the data packet does not include the QFI, the first data packet sent to the terminal does not contain any QoS flow identification. If the data packet includes QFI, the AN may send a first data packet carrying RFI to the terminal, and after the terminal receives the first data packet carrying RFI, the QFI may be determined according to a correspondence between RFI and QFI, so as to identify QoS flow, and select a corresponding DRB for data transmission.

Optionally, when configuring the DRB of the terminal, the AN sends the first indication information to the terminal, and notifies the terminal that a Service Data Adaptation Protocol (SDAP) PDU of the DRB includes a header of the SDAP. After the terminal receives the first indication information, the SDAP unit of the terminal receives an SDAP PDU from a Packet Data Convergence Protocol (PDCP) layer of the DRB, and then the SDAP unit processes a header of the SDAP PDU. If the terminal does not receive the first indication information, the SDAP unit transmits the SDAP PDU to a higher layer.

Optionally, the AN establishes a data radio bearer, where the data radio bearer is used by the qos flow corresponding to the first identifier separately and is not shared with other qos flows.

Optionally, the AN sends the second indication information to the terminal, and after the terminal receives the second indication information, the data packet transmitted on the data radio bearer uses a reflection service quality mechanism.

Optionally, the terminal may send a third data packet carrying the RFI to the AN according to the correspondence between the RFI and the QFI. And after receiving the third data packet carrying the RFI, the AN sends a fourth data packet carrying the QFI to the UPF according to the stored corresponding relation between the RFI and the QFI.

Optionally, when the SMF determines that a certain QoS flow does not use a Reflective QoS mechanism, the SMF may send QoS flow information including a deactivated reflection service quality mechanism indicator (DRQI) to the AN; or sends QoS parameter information, i.e., QFI, QoS parameters (e.g., 5QI and ARP) not containing RQI to the AN. When the AN receives the data packet containing QFI of the QoS flow, the AN transmits the data packet containing RFI and DRQI to the terminal. And after receiving the data packet containing the DRQI, the terminal deletes the corresponding QoS rule.

In this embodiment of the present application, an access network node first receives a first message sent by an access and mobility management functional entity, and if the first message includes a reflection service quality mechanism indication, the access network node sends a first data packet carrying a first identifier or a second identifier to a terminal, where the first identifier is used to identify a quality of service flow, the second identifier corresponds to the first identifier, and the bit number of the second identifier is less than the bit number of the first identifier. If the first message does not contain the indication of the reflection service quality mechanism, the data packet sent to the terminal by the access network node does not contain any QoS flow identification, thereby reducing the occupation of air interface resources.

Fig. 6 is a flowchart illustrating another method for controlling a quality of service flow according to an embodiment of the present application. Including but not limited to the following steps:

s601, the SMF establishes QoS flow according to the session request or the local strategy sent by the PCF. Specifically, the QoS flow may be established according to a processing priority, a packet delay, a packet loss rate, or a bit rate required in the session request or the local policy.

S602, the SMF sends a session management request including QoS information to the AMF, where the QoS information may be reflective QoS related information or non-reflective QoS related information. The reflective QoS related information may include QFI, RQI, 5QI, and ARP, etc., and the non-reflective QoS related information may include QFI, 5QI, and ARP, etc.

S603, AMF sends N2 message to AN, said N2 message contains the above QoS information.

It should be noted that, after receiving the data packet carrying the first identifier sent by the UPF, the AN may send the data packet carrying the first identifier to the terminal, where the first identifier may be QFI and is used to identify the qos flow. However, because the QFI has a long length and occupies a lot of air interface resources, in order to reduce the occupation of the air interface resources, a data packet carrying a second identifier may be sent to the terminal, where the second identifier may include an RFI identifier or an identifier in another form. Wherein the number of bits of the second identifier is less than the number of bits of the first identifier. For example, since a QoS flow contains various QoS parameters, at least 7 bits of QFI are required to identify the QoS flow, while RFI may be 2 bits, such as 00 or 01, which is obviously less than the number of bits occupied by QFI. Two alternatives are used for the purpose that both the terminal and the AN can identify RFI.

The first mode comprises the following steps:

s604a, after receiving the N2 request, the AN determines to establish a new DRB for the QoS flow or bind the existing DRB, allocates RFI corresponding to the QFI, and stores the corresponding relation between the RFI and the QFI.

S605a, the AN transmits RFI and QFI to the terminal.

S606a, the terminal establishes the corresponding relation between RFI and QFI.

S607a, the terminal sends a completion message to the AN.

The second way includes:

s604b, after receiving the N2 request, the AN determines to establish a new DRB for the QoS flow or bind the existing DRB, allocates RFI corresponding to the QFI, and stores the corresponding relation between the RFI and the QFI.

S605b, the AN sends a radio resource control message to the terminal, the radio resource control message is used to initiate a DRB setup or update request, and the radio resource control message includes RFI and QFI. Optionally, the rrc message further includes a Data Radio Bearer Identity (DRB ID).

S606b, after the terminal receives the wireless resource control message, it establishes a new DRB and saves the corresponding relation of QFI, RFI and DRB ID.

S607b, the terminal sends a DRB setup complete message to the AN.

S608, after the terminal and the AN end finish establishing the corresponding relation between the QFI and the RFI, the AN sends AN N2 request confirmation message to the AMF.

S609, the AMF sends a session management response to the SMF.

S610, the SMF initiates an N4 session modification procedure to the UPF.

S611, the UPF sends the data packet carrying the QFI to the AN.

And S612, after receiving the data packet carrying the QFI, the AN sends the data packet carrying the RFI to the terminal according to the correspondence between the stored QFI and the stored RFI.

Optionally, the terminal may send a data packet carrying the RFI to the AN according to the correspondence between the RFI and the QFI. And after receiving the data packet carrying the RFI, the AN sends the data packet carrying the QFI to the UPF according to the stored corresponding relation between the RFI and the QFI. The number of bits of the RFI is less than that of the QFI, so that the occupation of air interface resources between the terminal and the AN is reduced.

Fig. 7 is a flowchart illustrating a method for controlling a quality of service flow according to an embodiment of the present application. Including but not limited to the following steps:

s701, the UPF sends a data packet containing the QFI to the AN.

It should be noted that, after receiving the data packet carrying the QFI sent by the UPF, the AN may forward the data packet carrying the QFI to the terminal, where the QFI is used to identify the qos flow. However, because the QFI has a long length and occupies a lot of air interface resources, in order to reduce the occupation of the air interface resources, a data packet carrying a second identifier may be sent to the terminal, where the second identifier corresponds to the first identifier, and the second identifier may include an RFI identifier or an identifier in another form. Wherein the number of bits of the second identifier is less than the number of bits of the first identifier. For example, since a QoS flow contains various QoS parameters, at least 7 bits of QFI are required to identify the QoS flow, while RFI may be 2 bits, such as 00 or 01, which is obviously less than the number of bits occupied by QFI. Two alternatives are used for the purpose that both the terminal and the AN can identify RFI.

The first mode comprises the following steps:

s702a, after receiving the data packet, the AN allocates RFI corresponding to the QFI if the data packet includes a new QFI, and stores the corresponding relation between the RFI and the QFI.

S703a, the AN sends RFI and QFI to the terminal.

S704a, the terminal establishes the corresponding relation between RFI and QFI.

S705a, the terminal sends a completion message to the AN.

The second way includes:

s702b, after receiving the data packet, the AN allocates RFI corresponding to the QFI if the data packet includes a new QFI, and stores the corresponding relation between the RFI and the QFI.

S703b, the AN sends a radio resource control message to the terminal, where the radio resource control message is used to initiate a DRB setup or update request, and the radio resource control message includes RFI and QFI. Optionally, the radio resource control message further includes a DRB ID.

S704b, after the terminal receives the radio resource control message, it establishes a new DRB and stores the corresponding relation of QFI, RFI and DRB ID.

S705b, the terminal sends a DRB setup complete message to the AN.

S706, the UPF sends the data packet carrying the QFI to the AN.

And S707, after receiving the data packet carrying the QFI, the AN sends the data packet carrying the RFI to the terminal according to the correspondence between the stored QFI and the stored RFI.

The method of the embodiments of the present application is set forth above in detail and the apparatus of the embodiments of the present application is provided below.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an access network node according to an embodiment of the present disclosure, where the access network node may be an evolved node b (eNB) or a 5G base station (gNB), and refers to a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface. The access network node may be adapted to perform the method of the present application involving the access network node in the embodiments illustrated in fig. 1 to 7. The access network node may include a receiving module 801, a sending module 802, and may further include an allocating module 803, where details of each module are described below.

A receiving module 801, configured to receive a first message sent by an access and mobility management functional entity, where the first message includes a first identifier and a reflection service quality mechanism indication, and the first identifier is used to identify a quality of service flow;

a sending module 802, configured to send, according to the reflection service quality mechanism indication, a first data packet carrying the first identifier or a second identifier to a terminal, where the second identifier corresponds to the first identifier.

Optionally, the allocating module 803 is configured to allocate the second identifier corresponding to the first identifier, where a bit number of the second identifier is less than a bit number of the first identifier.

Optionally, the sending module 802 is further configured to send the first identifier and the second identifier to the terminal.

Optionally, the sending module 802 is further configured to send a radio resource control message to the terminal, where the radio resource control message includes the first identifier and the second identifier.

Optionally, the sending module 802 is further configured to send a second data packet to the terminal, where the second data packet includes the first identifier and the second identifier.

Optionally, the receiving module 801 is further configured to receive a third data packet sent by the terminal and carrying the second identifier; the sending module 802 is further configured to send, according to the corresponding relationship between the first identifier and the second identifier, a fourth data packet carrying the first identifier to a user plane functional entity.

Optionally, the sending module 802 is further configured to send first indication information to the terminal, where the first indication information is used to notify the terminal that a service data adaptation protocol packet data unit of a data radio bearer corresponding to the qos flow includes a header of the service data adaptation protocol.

Optionally, the sending module 802 is further configured to send second indication information to the terminal, where the second indication information is used to notify the terminal that a data packet transmitted on a data radio bearer uses a reflection service quality mechanism.

It should be noted that the implementation of the respective modules may also perform the methods and functions performed by the access network node in the above embodiments, corresponding to the corresponding descriptions of the method embodiments shown in fig. 5 to fig. 7.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a terminal provided in an embodiment of the present application, where the terminal may refer to a device providing voice and/or data connection to a user, may also be connected to a computing device such as a laptop computer or a desktop computer, or may be a stand-alone device such as a Personal Digital Assistant (PDA). A terminal can also be called a system, subscriber unit, subscriber station, mobile, remote station, access point, remote terminal, access terminal, user agent, or user device. The terminal can be used for executing the method related to the terminal in the embodiment shown in fig. 1 to 7 of the application. The terminal comprises a receiving module 901 and a sending module 902, wherein the detailed description of each module is as follows.

A receiving module 901, configured to receive a first identifier and a second identifier of an access network node, where the first identifier is used to identify a quality of service flow, the second identifier corresponds to the first identifier, and a bit number of the second identifier is less than a bit number of the first identifier;

a sending module 902, configured to send, to the access network node, a data packet carrying the second identifier according to the correspondence between the first identifier and the second identifier.

Optionally, the receiving module 901 is further configured to receive first indication information sent by the access network node;

the terminal also comprises a processing module, which is used for processing the message header of the service data adaptation protocol contained in the service data adaptation protocol grouped data unit of the data radio bearer corresponding to the service quality flow according to the first indication information.

Optionally, the receiving module 901 is further configured to receive second indication information sent by the access network node;

and the processing module is further used for utilizing a reflection service quality mechanism for the data packet transmitted on the data radio bearer according to the second indication information.

It should be noted that the implementation of each module may also perform the method and the function performed by the terminal in the above embodiments, corresponding to the corresponding description of the method embodiments shown in fig. 5 to fig. 7.

Continuing to refer to fig. 10, fig. 10 is a schematic structural diagram of another access network node according to an embodiment of the present application. The access network node may be adapted to perform the method of the present application involving the access network node in the embodiments illustrated in fig. 1 to 7. As shown, the access network node may include: at least one processor 1001, such as a CPU, at least one communication interface 1002, at least one memory 1003 and at least one communication bus 1004. Wherein a communication bus 1004 is used to enable connective communication between these components. The communication interface 1002 of the device in this embodiment of the present application is used for performing signaling or data communication with other node devices. The memory 1003 may be a high-speed RAM memory or a non-volatile memory (e.g., at least one disk memory). The memory 1003 may optionally be at least one storage device located remotely from the processor 1001. A set of program codes is stored in the memory 1003 and the processor 1001 executes the programs executed by the access network node described above in the memory 1003.

Receiving a first message sent by an access and mobility management functional entity, wherein the first message comprises a first identifier and a reflection service quality mechanism indication, and the first identifier is used for identifying a service quality flow;

and sending a first data packet carrying the first identifier or a second identifier to a terminal according to the reflection service quality mechanism indication, wherein the second identifier corresponds to the first identifier.

Further, the processor may cooperate with the memory and the communication interface to perform the operations of the access network node in the embodiments of the above application.

Referring to fig. 11, fig. 11 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure. The terminal can be used for executing the method related to the terminal in the embodiment shown in fig. 1 to 7 of the application. As shown, the terminal may include: at least one processor 1101, e.g., a CPU, at least one communication interface 1102, at least one memory 1103 and at least one communication bus 1104. Wherein a communication bus 1104 is used to enable connective communication between these components. The communication interface 1102 of the device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The memory 1103 may be a high-speed RAM memory or a non-volatile memory (e.g., at least one disk memory). The memory 1103 may optionally be at least one storage device located remotely from the processor 1101. A set of program codes is stored in the memory 1103 and the processor 1101 executes the programs executed by the above-mentioned terminals in the memory 1103.

Receiving a first identifier and a second identifier of an access network node, wherein the first identifier is used for identifying a service quality flow, the second identifier corresponds to the first identifier, and the bit number of the second identifier is less than that of the first identifier;

and sending a data packet carrying a second identifier to the access network node according to the corresponding relation between the first identifier and the second identifier.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

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

an access network node receives a first message sent by an access and mobility management functional entity, wherein the first message comprises a first identifier and a reflection service quality mechanism indicator (RQI), the first identifier is used for identifying a service quality flow, and the RQI is used for indicating a user plane to activate the reflection service quality mechanism;

and the access network node sends a first data packet carrying the first identifier or the second identifier to a terminal according to the reflection service quality mechanism indication, wherein the first data packet also carries a reflection service quality mechanism indication (RQI), and the second identifier corresponds to the first identifier, and when the first message does not contain the reflection service quality mechanism indication, the first data packet does not carry the first identifier or the second identifier.

2. The method of claim 1, wherein the access network node, after receiving the first message sent by the access and mobility management functional entity, further comprises:

and the access network node allocates the second identifier corresponding to the first identifier, wherein the bit number of the second identifier is less than that of the first identifier.

3. The method of claim 2, wherein after the access network node assigns the second identity corresponding to the first identity, further comprising:

and the access network node sends the first identifier and the second identifier to the terminal.

4. The method of claim 3, wherein the access network node sending the first identity and the second identity to the terminal comprises:

and the access network node sends a radio resource control message to the terminal, wherein the radio resource control message comprises the first identifier and the second identifier.

5. The method of claim 3, wherein the access network node sending the first identity and the second identity to the terminal comprises:

and the access network node sends a second data packet to the terminal, wherein the second data packet comprises the first identifier and the second identifier.

6. The method of any one of claims 1 to 5, wherein after the access network node sends the data packet carrying the first identifier or the second identifier to the terminal according to the indication of the reflection service quality mechanism, the method further comprises:

the access network node receives a third data packet which carries the second identifier and is sent by the terminal;

and the access network node sends a fourth data packet carrying the first identifier to a user plane functional entity according to the corresponding relation between the first identifier and the second identifier.

7. The method of any one of claims 1-5, further comprising:

and the access network node sends first indication information to the terminal, wherein the first indication information is used for informing the terminal that a service data adaptation protocol packet data unit of a data radio bearer corresponding to the service quality flow contains a message header of the service data adaptation protocol.

8. The method of any one of claims 1-5, further comprising:

and the access network node sends second indication information to the terminal, wherein the second indication information is used for informing the terminal that a data packet transmitted on a data radio bearer uses a reflection service quality mechanism.

9. An access network node, characterized in that the access network node comprises:

a receiving module, configured to receive a first message sent by an access and mobility management functional entity, where the first message includes a first identifier and a reflection service quality mechanism indicator RQI, where the first identifier is used to identify a service quality flow, and the RQI is used to indicate a user plane to activate a reflection service quality mechanism;

a sending module, configured to send a first data packet carrying the first identifier or the second identifier to a terminal according to the reflection qos mechanism indication, where the first data packet further carries the reflection qos mechanism indication RQI, and the second identifier corresponds to the first identifier, where when the first message does not include the reflection qos mechanism indication, the first data packet does not carry the first identifier or the second identifier.

10. The access network node of claim 9, wherein the access network node further comprises:

and the distribution module is used for distributing the second identifier corresponding to the first identifier, and the bit number of the second identifier is less than that of the first identifier.

11. The access network node of claim 10, wherein the sending module is further configured to send the first identity and the second identity to the terminal.

12. The access network node of claim 11, wherein the sending module is further configured to send a radio resource control message to the terminal, and the radio resource control message includes the first identifier and the second identifier.

13. The access network node of claim 12, wherein the sending module is further configured to send a second data packet to the terminal, and the second data packet includes the first identifier and the second identifier.

14. The access network node according to any of claims 9-13,

the receiving module is further configured to receive a third data packet that carries the second identifier and is sent by the terminal;

the sending module is further configured to send a fourth data packet carrying the first identifier to a user plane functional entity according to the corresponding relationship between the first identifier and the second identifier.

15. The access network node according to any of claims 9-13,

the sending module is further configured to send first indication information to the terminal, where the first indication information is used to notify the terminal that a service data adaptation protocol packet data unit of a data radio bearer corresponding to the qos flow includes a header of the service data adaptation protocol.

16. The access network node according to any of claims 9-13,

the sending module is further configured to send second indication information to the terminal, where the second indication information is used to notify the terminal that a data packet transmitted on a data radio bearer uses a reflection service quality mechanism.