WO2019213905A1

WO2019213905A1 - Method and apparatus for binding data stream, and computer storage medium

Info

Publication number: WO2019213905A1
Application number: PCT/CN2018/086352
Authority: WO
Inventors: 刘建华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-05-10
Filing date: 2018-05-10
Publication date: 2019-11-14
Also published as: CN111247837B; TW201947985A; WO2019214089A1; WO2019214105A1; CN111247837A

Abstract

Disclosed are a method and apparatus for binding a data stream, and a computer storage medium. The method comprises: a first access network element receiving an establishment request message or a modification request message for a data stream in a PDU session sent by a first core network element; and the first access network element binding, according to the establishment request message or the modification request message, each data stream and/or session to be established or to be modified to a radio bearer under a corresponding RAT.

Description

Method and device for binding data stream, computer storage medium

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for binding a data stream, and a computer storage medium.

Background technique

Referring to FIG. 1, FIG. 1 is a conventional networking mode, in which a path of a user plane is indicated by a solid line, and a path of a control plane is indicated by a dotted line. In the networking mode, a terminal (UE, User Equipment) can Simultaneously establish new NR (New Radio) access and Long Term Evolution (LTE) access on the same protocol data unit (PDU) session, and part of the data flow of the PDU Session The NR base station (RAN node-1) and the UE bear the air interface bearer, and the other part of the data stream carries the air interface bearer between the LTE base station (RAN node-2) and the UE.

The NR base station or the LTE base station serves as an anchor point of the control plane, and performs a letter with the core network side receiving core access and mobility management (AMF, Core Access and Mobility Management Function) and session management function (SMF). Let the interaction complete the operations of establishing/modifying/deleting the PDU session.

At present, the anchor point on the RAN side only determines the air traffic carried by the NR according to the quality of the air interface channel and the quality of service (QoS), and which data flows are carried by the air interface corresponding to the LTE. Poor control.

Summary of the invention

To solve the above technical problem, an embodiment of the present invention provides a method and apparatus for binding a data stream, and a computer storage medium.

The method for binding a data stream provided by the embodiment of the present invention includes:

Receiving, by the first access network element, a data flow establishment request message or a modification request message in a PDU session sent by the first core network element;

The first access network network element binds each data stream and/or session to be established or to be modified to the radio bearer in the corresponding RAT according to the setup request message or the modify request message.

In an embodiment, the setup request message or the modify request message includes first indication information, where the first indication information includes data flow indication information and RAT indication information corresponding to a data flow to be established or to be modified.

In an embodiment, the first indication information further includes indication information of whether the data flow to be established or to be modified is offloaded, and/or indication information of whether the uplink and downlink transmissions correspond to the same RAT;

The indication information of whether the offloading is used to indicate whether the data stream is transmitted under multiple RATs.

In an embodiment, one data stream corresponds to one RAT indication information or multiple RAT indication information.

In an embodiment, when one data stream corresponds to multiple RAT indication information, each RAT indication information of the multiple RAT indication information corresponds to one priority information.

In an embodiment, the setup request message or the modify request message includes second indication information, where the second indication information includes data flow indication information corresponding to the data flow to be established or to be modified;

The first access network element side stores the first configuration information, where the first configuration information includes different RAT indication information corresponding to the data flow indication information range.

In an embodiment, the first access network element binds each data stream and/or session to be established or to be modified to a radio bearer under the corresponding RAT according to the setup request message or the modify request message. Including:

Determining, by the first access network element, the RAT corresponding to each data flow to be established or to be modified, according to the second indication information and the first configuration information, and the data to be established or to be modified The flow and/or session is bound to a radio bearer under the corresponding RAT.

In an embodiment, the first configuration information is statically configured on the network element side of the first access network, or the first configuration information is sent by the core network side or the network management side to the first access network. Network element.

In an embodiment, the second indication information is generated by the first core network element based on a binding policy, where the binding policy includes at least a correspondence between each attribute information of the data flow and a RAT, and the attribute information Includes at least one of the following: packet characteristics information, Application id.

In an embodiment, the binding policy is stored in the subscription information, and when the terminal performs registration or PDU session establishment, the first core network element receives the subscription information, and obtains the subscription information from the subscription information. Binding strategy.

In an embodiment, the RAT corresponding to the DNN and/or the S-NSSAI is configured in the subscription information, so that the first core network element is determined to be established based on the DNN and/or S-NSSAI according to the subscription information. The RAT corresponding to the modified PDU session, the setup request message or the modification request message sent by the first core network element to the first access network network element carries third indication information, where the third indication information is used Indicates the RAT corresponding to the PDU session.

In an embodiment, the binding operation of the data flow to be established or to be modified and the radio bearer in the corresponding RAT is triggered by: sending, by the second core network element, the first core network element First request message.

In an embodiment, the first request message is sent by the third-party server to the second core network element, and is forwarded by the second core network element to the first core network element.

In an embodiment, the method further includes:

Sending, by the terminal, the second request message to the first core network element or the second core network element; and/or the third-party server sends the second request message to the first core network element or the second core network And the second request message includes a binding policy, where the binding policy includes at least one of the attribute information of the data flow and the RAT, and the attribute information includes at least one of the following: the data packet feature information, the Application id .

In an embodiment, the method further includes:

After the data network and/or the session to be established or to be modified is bound to the radio bearer in the corresponding RAT, the first access network element sends an acknowledgement message to the first core network element.

The device for binding a data stream provided by the embodiment of the present invention includes:

a receiving unit, configured to receive an establishment request message or a modification request message of a data flow in a PDU session sent by the first core network element;

The binding unit is configured to bind each data stream and/or session to be established or to be modified to the radio bearer under the corresponding RAT according to the setup request message or the modify request message.

The device further includes: a storage unit, configured to store first configuration information, where the first configuration information includes RAT indication information corresponding to different data flow indication information ranges.

In an embodiment, the binding unit is configured to determine, according to the second indication information and the first configuration information, a RAT corresponding to each data flow to be established or to be modified, and each of the to-be-established Or the data stream and/or session to be modified is bound to the radio bearer under the corresponding RAT.

In an embodiment, the terminal sends a second request message to the first core network element or the second core network element; and/or the third party server sends a second request message to the first core network element. Or the second core network element, the second request message includes a binding policy, where the binding policy includes at least one of the attribute information of the data flow and the RAT, and the attribute information includes at least one of the following: data Package feature information, Application id.

In an embodiment, the device further includes:

And a sending unit, configured to send an acknowledgement message to the first core network element.

The computer storage medium provided by the embodiment of the present invention has stored thereon computer executable instructions, and the computer executable instructions are implemented by the processor to implement the method for binding the data stream.

In the technical solution of the embodiment of the present invention, the first access network element receives the data flow establishment request message or the modification request message in the PDU session sent by the first core network element; the first access network element is configured according to The setup request message or the modify request message binds each data stream and/or session to be established or to be modified to a radio bearer under the corresponding RAT. With the technical solution of the embodiment of the present invention, the control data stream is selected for the RAT, and the anchor point on the RAN side can determine, according to the indication information sent by other network elements, how each data flow (that is, QoS flow) in the PDU session is mapped to the air interface. On the bearer (DRB).

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

Figure 1 is an existing networking mode;

2 is a schematic flowchart 1 of a method for binding a data stream according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a correspondence situation of a binding data flow according to an embodiment of the present invention; FIG.

4 is a schematic diagram of a second case of binding data flows according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart 2 of a method for binding a data stream according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an apparatus for binding a data stream according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a computer device according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

2 is a schematic flowchart 1 of a method for binding a data stream according to an embodiment of the present invention. As shown in FIG. 2, the method for binding a data stream includes the following steps:

Step 201: The first access network element receives the establishment request message or the modification request message of the data flow in the PDU session sent by the first core network element.

In the embodiment of the present invention, the first access network element is an anchor point on the RAN side, such as the NR base station or the LTE base station in FIG. The first core network element is SMF. The second core network element involved in the following is PCF.

The RAN side selects to establish a radio bearer under a specific RAT according to the establishment/modification request message of the data stream in the PDU session sent by the core network side.

Step 202: The first access network element binds each data stream and/or session to be established or to be modified to the radio bearer in the corresponding RAT according to the setup request message or the modify request message.

In the embodiment of the present invention, the first access network element binds each data stream and/or session to be established or to be modified to the radio bearer in the corresponding RAT according to the setup request message or the modify request message. In, can be divided into the following situations:

Case 1: Referring to FIG. 3, the setup request message or the modify request message includes first indication information, where the first indication information includes data flow indication information and RAT indication information corresponding to a data flow to be established or to be modified. Further, the first indication information further includes indication information of whether the data flow to be established or to be modified is offloaded, and/or indication information of whether the uplink and downlink transmissions correspond to the same RAT. The indication information of whether the offloading is used to indicate whether the data stream is transmitted under multiple RATs.

For example, the indication of the indication information of the data stream offloading: the data stream running on the core network corresponds to the NR base station on the RAN side, and the part corresponds to the LTE base station.

Here, one data stream corresponds to one RAT indication information or multiple RAT indication information. When one data stream corresponds to multiple RAT indication information, each RAT indication information of the multiple RAT indication information corresponds to one priority information.

Specifically, the SMF sends first indication information to the RAN side, where the first indication information includes a list of data flows to be established/modified and a corresponding RAT. The RAN side binds the data stream or the entire PDU session to the radio bearers under different RATs according to the first indication information sent by the SMF.

The RAT may be of the following access types: NR access, LTE access, WLAN access, 3GPP access, non-3GPP access, satellite access, and the like.

The first indication information is exemplified by Table 1 below, wherein the QFI value represents data flow indication information, and the RAT selection represents RAT indication information.

Table 1

In addition, the first indication information further includes indication information of whether the data flow to be established or to be modified is offloaded, and/or indication information of whether the uplink and downlink transmissions correspond to the same RAT, as shown in Table 1, whether the split bearer indicates whether the traffic is offloaded. Indicates whether the uplink and downlink are the same RAT indicating whether the uplink and downlink transmissions correspond to the indication information of the same RAT.

It should be understood that whether to perform the Split bearer means that all the downlink data flows are sent to the anchor point on the RAN side, and then the anchor points on the RAN side are respectively forwarded to the designated RAT. For example, the anchor point on the RAN side is an NR base station, and the data stream needs to be carried on the bearer of the LTE air interface. When the Split bearer is performed, the data stream of the core network is sent to the NR base station, and then the NR base station transmits the data that needs to be transmitted on the LTE. The flow is forwarded to the LTE base station; otherwise, if the split bearer is not performed, the core network directly sends the data stream to the LTE base station without forwarding through the NR base station.

In addition, the RAT selection may be a priority list, as shown by the RAT selection corresponding to QFI=1 in Table 1, the first preferred access LTE, and the second selected access NR, indicating that the LTE access fails preferentially. Or access to the NR when other conditions occur.

Case 2: Referring to FIG. 4, the setup request message or the modify request message includes second indication information, where the second indication information includes data flow indication information corresponding to a data flow to be established or to be modified; the first access The network element side stores first configuration information, where the first configuration information includes RAT indication information corresponding to different data flow indication information ranges.

In this case, the first access network element determines, according to the second indication information and the first configuration information, a RAT corresponding to each data flow to be established or to be modified, and the each to be established or The data stream and/or session to be modified is bound to the radio bearer under the corresponding RAT.

In an embodiment, the second indication information is generated by the first core network element based on a binding policy, where the binding policy includes at least a correspondence between each attribute information of the data flow and a RAT, and the attribute information Includes at least one of the following: packet characteristics information, Application id. Further, the binding policy is stored in the subscription information. When the terminal performs the registration or the PDU session is established, the first core network element receives the subscription information, and obtains the binding policy from the subscription information.

Specifically, after receiving the data flow establishment/modification request sent by the SMF, the RAN side establishes radio bearers of different data flows under different RATs according to the value of the QFI and the RAT corresponding to the QFI value range. Here, the mapping between the QFI value range and the RAT is statically configured on the RAN side or previously sent by the core network/network management to the RAN, that is, the mapping relationship similar to Table 1 is pre-configured on the RAN side, and the data flow establishment of each PDU session is not required. / Make changes when making changes.

Further, the value of QFI is generated by the SMF and can be generated according to the binding policy shown in Table 2. Specifically, the SMF/PCF network element triggers to establish radio bearers of different data flows under different RATs according to the binding policy as shown in Table 2 when the trigger condition is met.

数据包特征信息Packet characteristic information	接入LTEAccess to LTE
Application id＝1Application id=1	接入NRAccess to NR
Application id＝2Application id=2	接入LTEAccess to LTE
QFI/5QI＝[x-y]QFI/5QI=[x-y]	接入LTEAccess to LTE
QFI/5QI＝[w-z]QFI/5QI=[w-z]	接入WLAN等Access to WLAN, etc.

Table 2

The data packet feature information includes one or more of the following: a URL, an SNI (Server Name Indicator), an IP source address, an IP source port number, an IP destination address, an IP destination port number, a MAC source address, an IP source port number, MAC destination address, MAC destination port number, protocol type, and VLAN tag. All the information on the left side in Table 2 (referred to as attribute information of the data stream in the embodiment of the present invention) will eventually correspond to one data stream, and each data stream has its own QFI (QoS Flow Id).

Case 3: configuring a RAT corresponding to the DNN and/or the S-NSSAI in the subscription information, so that the first core network element determines, according to the subscription information, a PDU established or modified based on the DNN and/or the S-NSSAI. The RAT corresponding to the session, the setup request message or the modify request message sent by the first core network element to the first access network network element carries the third indication information, where the third indication information is used to indicate the The RAT corresponding to the PDU session.

Specifically, the RAT type corresponding to the DNN and/or the S-NSSAI is configured in the subscription information, and the PDU session established/modified according to the DNN and/or the S-NSSAI on the subsequent SMF can only select the specified RAT type, including NR and LTE. NR, LTE, etc., when the SMF establishes/modifies a PDU session request, it only carries the RAT type corresponding to the PDU session.

In an embodiment, the binding operation of the data flow to be established or to be modified and the radio bearer in the corresponding RAT is triggered by: sending, by the second core network element, the first core network element First request message. Further, the first request message is sent by the third-party server to the second core network element, and is forwarded by the second core network element to the first core network element.

In addition, the first core network element or the second core network element may obtain the binding policy by: sending, by the terminal, the second request message to the first core network element or the second core network element; and Or the third-party server sends the second request message to the first core network element or the second core network element, where the second request message includes a binding policy, where the binding policy includes at least each of the data flows. Correspondence between the attribute information and the RAT, the attribute information includes at least one of the following: data packet feature information, Application id.

Here, the binding policy may be stored in the subscription information, and sent to the core network element (such as SMF) when the UE performs registration or PDU session establishment.

Specifically, the UE sends a request data flow binding message to the PCF/SMF through the NAS message and/or the third party OTT server sends a request data flow binding message to the PCF/SMF, where the request data flow binding message includes the following table 2 Binding strategy.

In the embodiment of the present invention, after the data network and/or the session to be established or to be modified is bound to the radio bearer in the corresponding RAT, the first access network element is sent to the first core network. The element sends a confirmation message.

FIG. 5 is a schematic flowchart 2 of a method for binding a data stream according to an embodiment of the present invention. As shown in FIG. 5, the method for binding a data stream includes the following steps:

Step 501: The UE sends a PDU session establishment/modification request message to the SMF/UPF. Optionally, the PDU session establishment/modification request message is added with a packet feature description information/Application id and a corresponding RAT selection (similar to Table 2). Binding strategy).

Step 502: 2a. During the interaction between the SMF and the PCF, the PCF may configure the binding policy shown in Table 2; and/or, the 2b.SMF interacts with the UDM, and obtains the RAT selection policy corresponding to the DNN/NSSAI through the subscription information.

Step 503: The SMF triggers a PDU session establishment/modification request.

3a. If the PDU selection request (ie, the binding policy) is carried in the PDU session establishment/modification request message in step 401, the request is immediately started.

3b. If a subsequent application data flow is generated, the SMF triggers the request according to the binding policy or the RAT selection policy configured in step 402.

Here, the SMF adds the indication information shown in Table 1 to the request message sent to the RAN side; or determines the value of the QFI according to the static configuration rule and then sends it to the RAN side.

Step 504: The RAN performs radio bearer establishment according to the RAT indication parameter or the QFI value.

Step 505: The RAN sends a reply message to the SMF/UPF.

FIG. 6 is a schematic structural diagram of an apparatus for binding a data stream according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes:

The receiving unit 601 is configured to receive an establishment request message or a modification request message of a data flow in a PDU session sent by the first core network element.

The binding unit 602 is configured to bind each data stream and/or session to be established or to be modified to the radio bearer under the corresponding RAT according to the setup request message or the modify request message.

The device further includes: a storage unit 603, configured to store first configuration information, where the first configuration information includes RAT indication information corresponding to different data flow indication information ranges.

In an embodiment, the binding unit 602 is configured to determine, according to the second indication information and the first configuration information, a RAT corresponding to each data flow to be established or to be modified, and The data stream and/or session established or to be modified is bound to the radio bearer under the corresponding RAT.

In an embodiment, the device further includes:

The sending unit 604 is configured to send an acknowledgement message to the first core network element.

Those skilled in the art should understand that the implementation functions of the units in the apparatus for binding data streams shown in FIG. 6 can be understood by referring to the related description of the foregoing method of binding data streams. The functions of the units in the apparatus for binding data streams shown in FIG. 6 may be implemented by a program running on a processor, or may be implemented by a specific logic circuit.

The apparatus for binding data streams described above in the embodiment of the present invention may also be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, wherein the computer executable instructions are stored, and the computer executable instructions are executed by the processor to implement the method for binding the data stream according to the embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a computer device according to an embodiment of the present invention. The computer device may be a terminal or a network device. As shown in FIG. 7, computer device 100 may include one or more (only one shown) processor 1002 (processor 1002 may include, but is not limited to, a Micro Controller Unit (MCU) or a programmable logic device. A processing device such as an FPGA (Field Programmable Gate Array), a memory 1004 for storing data, and a transmission device 1006 for a communication function. It will be understood by those skilled in the art that the structure shown in FIG. 7 is merely illustrative and does not limit the structure of the above electronic device. For example, computer device 100 may also include more or fewer components than shown in FIG. 7, or have a different configuration than that shown in FIG.

The memory 1004 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the method in the embodiment of the present invention, and the processor 1002 executes various functional applications by running software programs and modules stored in the memory 1004. And data processing, that is, to achieve the above method. Memory 1004 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory. In some examples, memory 1004 can further include memory remotely located relative to processor 1002, which can be coupled to computer device 100 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission device 1006 is for receiving or transmitting data via a network. The network specific examples described above may include a wireless network provided by a communication provider of computer device 100. In one example, the transmission device 1006 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet. In one example, the transmission device 1006 can be a radio frequency (RF) module for communicating with the Internet wirelessly.

The technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

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

The units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one second processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention.

Claims

A method of binding a data stream, the method comprising:

Receiving, by the first access network element, a data flow establishment request message or a modification request message in a PDU session sent by the first core network element;

The first access network network element binds each data stream and/or session to be established or to be modified to the radio bearer in the corresponding RAT according to the setup request message or the modify request message.
The method according to claim 1, wherein the establishment request message or the modification request message comprises first indication information, and the first indication information comprises data flow indication information and RAT indication corresponding to the data flow to be established or to be modified. information.
The method according to claim 2, wherein the first indication information further includes indication information of whether the data flow to be established or to be modified is offloaded, and/or indication information of whether the uplink and downlink transmissions correspond to the same RAT;

The indication information of whether the offloading is used to indicate whether the data stream is transmitted under multiple RATs.
The method according to claim 2 or 3, wherein one data stream corresponds to one RAT indication information or a plurality of RAT indication information.
The method according to claim 4, wherein, when one data stream corresponds to the plurality of RAT indication information, each of the plurality of RAT indication information corresponds to one priority information.
The method according to claim 1, wherein the establishment request message or the modification request message comprises second indication information, and the second indication information comprises data flow indication information corresponding to the data flow to be established or to be modified;

The first access network element side stores the first configuration information, where the first configuration information includes different RAT indication information corresponding to the data flow indication information range.
The method according to claim 6, wherein the first access network element binds each data stream and/or session to be established or to be modified to a corresponding one according to the establishment request message or the modification request message. Among the radio bearers under the RAT, include:

Determining, by the first access network element, the RAT corresponding to each data flow to be established or to be modified, according to the second indication information and the first configuration information, and the data to be established or to be modified The flow and/or session is bound to a radio bearer under the corresponding RAT.
The method according to claim 6 or 7, wherein the first configuration information is statically configured on the network side of the first access network, or the first configuration information is sent by the core network side or the network management side. The first access network network element.
The method according to any one of claims 6 to 8, wherein the second indication information is generated by the first core network element based on a binding policy, and the binding policy includes at least each attribute information of the data flow. Corresponding relationship with the RAT, the attribute information includes at least one of the following: data packet feature information, Application id.
The method according to claim 9, wherein the binding policy is stored in the subscription information, and the first core network element receives the subscription information from the signing when the terminal performs registration or PDU session establishment. Obtain the binding policy in the information.
The method according to any one of claims 1 to 10, wherein a RAT corresponding to the DNN and/or the S-NSSAI is configured in the subscription information, so that the first core network element determines the basis based on the subscription information. a RAT corresponding to the PDU session established or modified by the DNN and/or the S-NSSAI, where the first core network element carries a third indication in the setup request message or the modification request message sent by the network element of the first access network Information, the third indication information is used to indicate a RAT corresponding to the PDU session.
The method according to any one of claims 1 to 11, wherein the binding operation of the data flow to be established or to be modified and the radio bearer in the corresponding RAT is triggered by: the second core network element Sending a first request message to the first core network element.
The method according to claim 12, wherein the first request message is sent by the third-party server to the second core network element, and is forwarded by the second core network element to the first core network yuan.
The method of any of claims 1 to 13, wherein the method further comprises:

Sending, by the terminal, the second request message to the first core network element or the second core network element; and/or the third-party server sends the second request message to the first core network element or the second core network And the second request message includes a binding policy, where the binding policy includes at least one of the attribute information of the data flow and the RAT, and the attribute information includes at least one of the following: the data packet feature information, the Application id .
The method of any of claims 1 to 14, wherein the method further comprises:

After the data network and/or the session to be established or to be modified is bound to the radio bearer in the corresponding RAT, the first access network element sends an acknowledgement message to the first core network element.
An apparatus for binding a data stream, the apparatus comprising:

a receiving unit, configured to receive an establishment request message or a modification request message of a data flow in a PDU session sent by the first core network element;

The binding unit is configured to bind each data stream and/or session to be established or to be modified to the radio bearer under the corresponding RAT according to the setup request message or the modify request message.
The apparatus according to claim 16, wherein the establishment request message or the modification request message comprises first indication information, and the first indication information comprises data flow indication information and a RAT indication corresponding to the data flow to be established or to be modified. information.
The apparatus according to claim 17, wherein the first indication information further includes indication information of whether a data flow to be established or to be modified is offloaded, and/or indication information of whether the uplink and downlink transmissions correspond to the same RAT;

The indication information of whether the offloading is used to indicate whether the data stream is transmitted under multiple RATs.
The apparatus according to claim 17 or 18, wherein one data stream corresponds to one RAT indication information or a plurality of RAT indication information.
The apparatus according to claim 19, wherein, when one data stream corresponds to the plurality of RAT indication information, each of the plurality of RAT indication information corresponds to one priority information.
The apparatus according to claim 16, wherein the establishment request message or the modification request message comprises second indication information, and the second indication information comprises data flow indication information corresponding to the data flow to be established or to be modified;

The device further includes: a storage unit, configured to store first configuration information, where the first configuration information includes RAT indication information corresponding to different data flow indication information ranges.
The apparatus according to claim 21, wherein the binding unit is configured to determine, according to the second indication information and the first configuration information, a RAT corresponding to each data flow to be established or to be modified, and The data streams and/or sessions to be established or to be modified are bound to the radio bearers under the corresponding RAT.
The device according to claim 21 or 22, wherein the first configuration information is statically configured on the network side of the first access network, or the first configuration information is sent by the core network side or the network management side. The first access network network element.
The apparatus according to any one of claims 21 to 23, wherein the second indication information is generated by the first core network element based on a binding policy, and the binding policy includes at least each attribute information of the data flow. Corresponding relationship with the RAT, the attribute information includes at least one of the following: data packet feature information, Application id.
The apparatus according to claim 24, wherein the binding policy is stored in the subscription information, and when the terminal performs registration or PDU session establishment, the receiving unit receives the subscription information, and obtains the subscription information from the subscription information. The binding strategy.
The apparatus according to any one of claims 16 to 25, wherein a RAT corresponding to the DNN and/or the S-NSSAI is configured in the subscription information, so that the first core network element determines the basis based on the subscription information. a RAT corresponding to the PDU session established or modified by the DNN and/or the S-NSSAI, where the first core network element carries a third indication in the setup request message or the modification request message sent by the network element of the first access network Information, the third indication information is used to indicate a RAT corresponding to the PDU session.
The device according to any one of claims 16 to 26, wherein the binding operation of the data flow to be established or to be modified and the radio bearer in the corresponding RAT is triggered by: a second core network element Sending a first request message to the first core network element.
The apparatus according to claim 27, wherein the first request message is sent by the third-party server to the second core network element, and is forwarded by the second core network element to the first core network yuan.
The apparatus according to any one of claims 16 to 28, wherein the terminal sends a second request message to the first core network element or the second core network element; and/or the third party sends the second request The message is sent to the first core network element or the second core network element, and the second request message includes a binding policy, where the binding policy includes at least a correspondence between each attribute information of the data flow and the RAT. The attribute information includes at least one of the following: packet characteristic information, Application id.
The device according to any one of claims 16 to 29, wherein the device further comprises:

And a sending unit, configured to send an acknowledgement message to the first core network element.
A computer storage medium having stored thereon computer executable instructions for performing the method steps of any one of claims 1 to 15 when executed by a processor.