CN111247837B

CN111247837B - Method and device for binding data stream and computer storage medium

Info

Publication number: CN111247837B
Application number: CN201880068604.6A
Authority: CN
Inventors: 刘建华
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-05-10
Filing date: 2018-08-14
Publication date: 2022-02-25
Anticipated expiration: 2038-08-14
Also published as: WO2019213905A1; TW201947985A; WO2019214089A1; WO2019214105A1; CN111247837A

Abstract

The application discloses a method and a device for binding data streams and a computer storage medium, wherein the method comprises the following steps: a first access network element receives a request message for establishing or modifying a data stream in a PDU session sent by a first core network element; and the first access network element binds each data stream and/or session and/or at least one tunnel to be established or modified to a radio bearer under a corresponding RAT according to the establishment request message or the modification request message, wherein the at least one tunnel is used for transmitting data between a core network and an access network.

Description

Method and device for binding data stream and computer storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for binding data streams, and a computer storage medium.

Background

Referring to fig. 1, fig. 1 is a conventional networking mode, where a path of a User plane is represented by a solid line, and a path of a control plane is represented by a dotted line, in the networking mode, a terminal (UE) may simultaneously establish a New air interface (NR) access and a Long Term Evolution (LTE) access on the same Protocol Data Unit (PDU) Session (Session), a part of Data of the PDU Session flows away an air interface bearer between an NR base station (RAN node-1) and the UE, and another part of Data flows away an air interface bearer between an LTE base station (RAN node-2) and the UE.

The NR base station or the LTE base station serves as an anchor point of a control plane, performs signaling interaction with a Core Access and Mobility Management (AMF) and a Session Management Function (SMF) of a Core network side, and completes operations such as PDU Session establishment, modification, and deletion.

Currently, an anchor point on the RAN side only determines which data flows away from an air interface bearer corresponding to NR and which data flows away from an air interface bearer corresponding to LTE according to its own air interface channel Quality, Quality of Service (QoS) satisfaction degree, and the like, and thus controllability is poor.

Disclosure of Invention

The embodiment of the application provides a method and a device for binding data streams and a computer storage medium.

The method for binding the data stream provided by the embodiment of the application comprises the following steps:

a first access network element receives a request message for establishing or modifying a data stream in a PDU session sent by a first core network element;

and the first access network element binds each data stream and/or session and/or at least one tunnel to be established or modified to a radio bearer under a corresponding RAT according to the establishment request message or the modification request message, wherein the at least one tunnel is used for transmitting data between a core network and an access network.

In an embodiment, the setup request message or the modification request message includes first indication information, the first indication information including at least one of:

the corresponding relation between the data flow indication information corresponding to the data flow to be established or modified and the RAT indication information;

and the corresponding relation between the tunnel information corresponding to the at least one tunnel and the RAT indication information.

In an embodiment, the first indication information further includes indication information of whether a data stream to be established or modified is split and/or indication information of whether uplink and downlink transmission corresponds to the same RAT;

wherein the indication information of whether to offload is used for indicating whether the data stream is transmitted under multiple RATs.

In an embodiment, one data flow and/or tunnel corresponds to one RAT indication information or a plurality of RAT indication information.

In an embodiment, when one data flow and/or tunnel corresponds to a plurality of RAT indication information, each RAT indication information in the plurality of RAT indication information corresponds to one priority information.

In an embodiment, the establishment request message or the modification request message includes second indication information, where the second indication information includes data stream indication information corresponding to a data stream to be established or modified;

the first access network element side stores first configuration information, and the first configuration information includes RAT indication information corresponding to different data stream indication information ranges.

In an embodiment, the binding, by the first access network element, each data flow and/or session to be established or modified to a radio bearer under a corresponding RAT according to the establishment request message or the modification request message includes:

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

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

In an embodiment, the second indication information is generated by the first core network element based on a binding policy, and the binding policy includes at least one of: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

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

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

In an embodiment, the binding operation of the data flow to be established or modified and/or the at least one tunnel with the radio bearer under the corresponding RAT is triggered by: and the second core network element sends a first request message to the first core network element.

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

In an embodiment, the method further comprises:

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, wherein the second request message includes a binding policy, and the binding policy includes at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

In an embodiment, the binding policy is sent to the terminal by a network side.

In an embodiment, the method further comprises:

and after binding each data stream and/or session and/or at least one tunnel to be established or modified to a radio bearer under a corresponding RAT, the first access network element sends a confirmation message to the first core network element.

In an embodiment, the method further comprises:

the first access network element receives fourth indication information sent by the first core network element, and determines whether to start a multi-connection function based on the fourth indication information; alternatively, the first and second electrodes may be,

and under the condition that the first access network element receives the at least two pieces of tunnel information sent by the first core network element, the first access network element determines to start a multi-connection function.

In an embodiment, the fourth indication information is further used to indicate a type of each access network element in the multi-connection.

In an embodiment, when there are N pieces of tunnel information and the fourth indication information sent to the first access network element, a tunnel is respectively established for each access network element to perform data transmission, where N is greater than or equal to 2.

In one embodiment, the multiple connection function includes at least a dual connection function.

In one embodiment, the dual connectivity function is a first dual connectivity function or a second dual connectivity function;

the first dual-connection function means: at least one third core network element is respectively connected with the first access network element and the second access network element; the data of the first access network element side is transmitted through a tunnel between the first access network element and the at least one third core network element, and the data of the second access network element side is transmitted through a tunnel between the second access network element and the at least one third core network element;

the second double-connection function refers to: at least one third core network element is connected with the first access network element, and the first access network element is connected with the second access network element; and the data at the side of the first access network element is transmitted through a tunnel between the first access network element and the at least one third core network element, and the data at the side of the second access network element is forwarded to the first access network element through the second access network element and is transmitted through a tunnel between the first access network element and the at least one third core network element.

the terminal sends a second request message to the first core network element or the second core network element, wherein the second request message comprises a binding policy, and the binding policy comprises at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

In an embodiment, the second request message comprises a session establishment request message or a session modification request message.

In an embodiment, the second request message sent by the terminal includes a binding relationship, where the binding relationship is used to indicate that the established and/or modified data flow and/or session is bound to an access network element.

In an embodiment, the second request message sent by the terminal includes a mapping relationship, where the mapping relationship is used to indicate that one data flow and/or tunnel corresponds to one RAT indication information or multiple RAT indication information.

and the terminal sends a second request message to the first core network element or the second core network element, wherein when the terminal sends the second request message for multiple times, data streams and/or sessions established and/or modified by different second request messages need to be bound to different access network elements for transmission.

The device for binding data streams provided by the embodiment of the application comprises:

a receiving unit, configured to receive a request message for establishing or modifying a data stream in a PDU session sent by a first core network element;

a binding unit, configured to bind, according to the establishment request message or the modification request message, each data flow and/or session to be established or modified and/or at least one tunnel to a radio bearer under a corresponding RAT, where the at least one tunnel is used to transmit data between a core network and an access network.

the device further comprises: the storage unit is 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 modified, and bind each data flow to be established or modified and/or a session to a radio bearer under the corresponding RAT.

In one 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, wherein the second request message includes a binding policy, and the binding policy includes at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

In an embodiment, the binding policy is sent to the terminal by a network side.

In one embodiment, the apparatus further comprises:

a sending unit, configured to send a confirmation message to the first core network element.

In an embodiment, the receiving unit is further configured to receive fourth indication information sent by the first core network element, and determine whether to open a multi-connection function based on the fourth indication information; or, determining to start the multi-connection function under the condition of receiving the at least two pieces of tunnel information sent by the first core network element.

a sending unit, configured to send a second request message to a first core network element or a second core network element, where the second request message includes a binding policy, and the binding policy includes at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

and a sending unit, configured to send a second request message to the first core network element or the second core network element, where when the second request message is sent multiple times, data streams and/or sessions established and/or modified by different second request messages need to be bound to different access network elements for transmission.

The computer storage medium provided by the embodiment of the application has computer executable instructions stored thereon, and the computer executable instructions, when executed by a processor, implement the method for binding data streams.

In the technical scheme of the embodiment of the application, a first access network element receives a request message for establishing or modifying a data stream in a PDU session sent by a first core network element; and the first access network element binds each data stream and/or session to be established or modified to a radio bearer under the corresponding RAT according to the establishment request message or the modification request message. By adopting the technical scheme of the embodiment of the application, the selection of the data flow to the RAT is controlled, and the anchor point at the RAN side can determine how each data flow (namely QoS flow) in the PDU session is mapped to a bearer (DRB) of an air interface according to the indication information sent by other network elements.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a prior networking model;

fig. 2 is a first flowchart illustrating a method for binding data streams according to an embodiment of the present application;

FIG. 3 is a diagram illustrating a case one of binding data flows according to an embodiment of the present application;

FIG. 4 is a diagram illustrating a second case of binding data flows according to an embodiment of the present application;

FIG. 5(a) is a first schematic diagram of a DC architecture according to an embodiment of the present application;

FIG. 5(b) is a second schematic diagram of the DC architecture of the embodiment of the present application;

fig. 6 is a second flowchart illustrating a method for binding data streams according to an embodiment of the present application;

fig. 7 is a third flowchart illustrating a method for binding data streams according to an embodiment of the present application;

FIG. 8 is a first diagram illustrating a structure of an apparatus for binding data streams according to an embodiment of the present application;

FIG. 9 is a block diagram illustrating a second structural configuration of an apparatus for binding data streams according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a computer device according to an embodiment of the present application.

Detailed Description

So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

Fig. 2 is a first flowchart illustrating a method for binding data streams according to an embodiment of the present application, as shown in fig. 2, the method for binding data streams includes the following steps:

step 201: the first access network element receives a request message for establishing or modifying the data stream in the PDU session sent by the first core network element.

In this embodiment of the present application, a network element of a first access network is an anchor point on a RAN side, for example, an NR base station or an LTE base station in fig. 1. The first core network element is an SMF. The second core network element referred to below is the PCF.

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

Step 202: and the first access network element binds each data stream and/or session and/or at least one tunnel to be established or modified to a radio bearer under a corresponding RAT according to the establishment request message or the modification request message, wherein the at least one tunnel is used for transmitting data between a core network and an access network.

In this embodiment of the present application, the first access network element binds, according to the establishment request message or the modification request message, each data stream and/or session to be established or modified to a radio bearer under a corresponding RAT, which may be divided into the following cases:

the first condition is as follows: referring to fig. 3, the setup request message or the modification request message includes first indication information including at least one of:

Further, the first indication information further includes indication information of whether the data stream to be established or modified is split and/or indication information of whether uplink and downlink transmission corresponds to the same RAT. Wherein the indication information of whether to offload is used for indicating whether the data stream is transmitted under multiple RATs.

For example: representation of indication information of data stream splitting: and one part of the data stream running in the core network corresponds to the NR base station and the other part of the data stream on the RAN side corresponds to the LTE base station.

Here, one data flow and/or tunnel corresponds to one RAT indication information or a plurality of RAT indication information. When one data flow and/or tunnel corresponds to a plurality of RAT indication information, each RAT indication information in the plurality of 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 streams to be established/modified and a corresponding RAT. And the RAN side binds data flow or the whole PDU session to a radio bearer under different RATs according to the first indication information sent by the SMF.

The RAT may be an access type as follows: NR access, LTE access, WLAN access, 3GPP access, non-3 GPP access, satellite access, and the like.

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

TABLE 1

In addition, the first indication information further includes indication information of whether the data stream to be established or modified is split and/or indication information of whether uplink and downlink transmission corresponds to the same RAT, as shown in table 1, whether split is carried out or not, and whether uplink and downlink are both the same RAT or not, indicates whether uplink and downlink transmission corresponds to the same RAT.

It should be understood that whether Split bearing is done means: the downlink data streams are all sent to the anchor point on the RAN side, and then forwarded to the specified RAT by the anchor point on the RAN side. For example, the anchor point on the RAN side is an NR base station, the data stream needs to be borne on an LTE air interface bearer, when Split bearer is performed, the data stream of the core network is all sent to the NR base station, and then the NR base station forwards the data stream that needs to be transmitted on LTE 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.

Furthermore, the RAT selection may be a priority list, as shown in the RAT selection corresponding to QFI ═ 1 in table 1, the first preferred access LTE and the second selected access NR indicate that the LTE is preferentially accessed, and the NR is accessed only when the LTE access fails or other conditions occur.

Case two: referring to fig. 4, the establishment request message or the modification request message includes second indication information, where the second indication information includes data stream indication information corresponding to a data stream to be established or modified; the first access network element side stores first configuration information, and the first configuration information includes RAT indication information corresponding to different data stream 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 modified, and binds each data flow to be established or modified and/or a session to a 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, and the binding policy includes at least one of: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id. Further, the binding policy is stored in subscription information, and when a terminal performs registration or PDU session establishment, the first core network element receives the subscription information and acquires the binding policy from the subscription information. Here, the indication information whether or not the dual connectivity triggering function is supported means: whether the terminal has dual connectivity capability.

Specifically, after receiving a 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 value range of the QFI. Here, the corresponding relationship between the QFI value range and the RAT is statically configured at the RAN side or is sent to the RAN by the core network/network management before, i.e. the mapping relationship similar to table 1 is configured at the RAN side in advance, and it is not necessary to change the PDU session data flow every time it is established/modified.

Further, the value of QFI is generated by SMF, which may be generated according to the binding policy shown in table 2. Specifically, the SMF/PCF network element triggers the establishment of radio bearers for different data flows under different RATs when the triggering conditions are met according to the binding policy as shown in table 2.

Packet characteristic information	Access LTE
		Application id＝1	Access NR
Application id＝2	Access LTE
		QFI/5QI＝[x-y]	Access LTE
QFI/5QI＝[w-z]	Access to WLAN, etc

TABLE 2

Wherein the data packet characteristic information comprises one or more of the following items: URL, SNI (Server Name Indicator), IP source address, IP source port number, IP destination address, IP destination port number, MAC source address, IP source port number, MAC destination address, MAC destination port number, protocol type, VLAN tag, and the like. All the information on the left side in table 2 (referred to as attribute information of data flows in the embodiment of the present application) will eventually correspond to one data Flow, and each data Flow has its own qfi (qos Flow id).

Case three: configuring a RAT corresponding to DNN and/or S-NSSAI in subscription information, so that the first core network element determines, according to the subscription information, a RAT corresponding to a PDU session established or modified based on DNN and/or S-NSSAI, where an establishment request message or a modification request message sent by the first core network element to the first access network element carries third indication information, and the third indication information is used to indicate 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, only the specified RAT type, including NR, LTE, and the like, can be selected on the subsequent SMF according to the PDU session established/modified by the DNN and/or the S-NSSAI, and the SMF only carries the RAT type corresponding to the PDU session when the PDU session establishment/modification request is made.

In an embodiment, the binding operation of the data flow to be established or modified and/or the at least one tunnel with the radio bearer under the corresponding RAT is triggered by: and the second core network element sends a first request message to the first core network element. Further, the first request message is sent to the second core network element by a third-party server, and forwarded to the first core network element by the second core network element.

In addition, the first core network element or the second core network element may obtain the binding policy in the following manner: 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, wherein the second request message includes a binding policy, and the binding policy includes at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id. Here, the indication information whether or not the dual connectivity triggering function is supported means: whether the terminal has dual connectivity capability.

Here, the binding policy may be stored in subscription information and sent to a core network element (e.g., SMF) when the UE performs registration or PDU session establishment. And the binding strategy is sent to the terminal by the network side.

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 binding policy shown in table 2.

In this embodiment of the present application, after binding each data stream and/or session and/or at least one tunnel to be established or modified to a radio bearer under a corresponding RAT, the first access network element sends a confirmation message to the first core network element.

In this embodiment of the present application, in addition to binding each data stream and/or session to be established or modified to a radio bearer under a corresponding RAT, at least one tunnel may also be bound to a radio bearer under a corresponding RAT, and further, the first access network element receives fourth indication information sent by the first core network element, and determines whether to open a multi-connection function based on the fourth indication information (determine whether to open a dual-connection function in a display manner); or, in a case that the first access network element receives at least two pieces of tunnel information sent by the first core network element, the first access network element determines to open a multi-connection function (implicitly determines whether to open a dual-connection function).

Taking dual connectivity as an example, the fourth indication information indicates that the type of the first access network element is an NR base station and the type of the second access network element is an LTE base station, or the fourth indication information indicates that the type of the second access network element is an NR base station and the type of the first access network element is an LTE base station, or the fourth indication information indicates that the types of the first access network element and the second access network element are both NR base stations, or the fourth indication information indicates that the types of the first access network element and the second access network element are both LTE base stations.

Here, the access network element side needs to establish an interface with the core network, and if there are multiple pieces of tunnel information, each access network element in the multi-connection needs to establish a tunnel for data transmission.

The multi-connection function involved in the above scheme includes at least a dual-connection function.

Here, the dual connection function is a first dual connection function or a second dual connection function; wherein the content of the first and second substances,

For example, in the PDU session establishment and/or modification procedure, the core network element (SMF) may provide one or more core network side Tunnel information (CN Tunnel Info), i.e. N3Tunnel information, and the N3Tunnel information points to the N3Tunnel address, and further, data transmitted by a RAT corresponding to each CN Tunnel Info, i.e. a Tunnel indicated by the CN Tunnel Info, is transmitted through a specific RAT radio access. Further, the core network indicates to the access network whether to trigger Dual Connectivity (DC) functionality, including the following two DC forms:

DC-1: referring to fig. 5(a), one or more UPFs connect RAN Node-1 and RAN Node-2, respectively.

DC-2: referring to fig. 5(b), one or more UPFs are all connected only to the RAN Node-1, and data through the RAN Node-2 is provided by the RAN Node-1 via the Xn interface.

Fig. 6 is a second flowchart illustrating a method for binding data streams according to an embodiment of the present application, where as shown in fig. 6, the method for binding data streams includes the following steps:

step 601: the UE sends a PDU session setup/modify request message to the SMF/UPF, optionally with packet profile information/Application id and corresponding RAT selection added to the PDU session setup/modify request message (similar to the binding policy shown in table 2).

Step 602: in the interaction process of SMF and PCF, PCF can configure the binding strategy shown in table 2; and/or 2b, the SMF interacts with the UDM, and the RAT selection strategy corresponding to the DNN/NSSAI is acquired through subscription information.

Step 603: the SMF triggers a PDU session setup/modify request.

3a, if the PDU session setup/modification request message in step 401 carries RAT selection requirement (i.e. binding policy), then immediately starting the request.

If some kind of application data flow is generated subsequently, the SMF triggers this request according to the binding policy or RAT selection policy configured in step 602.

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

Step 604: and the RAN establishes the radio bearer according to the RAT indication parameter or the QFI value.

Step 605: the RAN sends a reply message to the SMF/UPF.

Fig. 7 is a third flowchart illustrating a method for binding data streams according to an embodiment of the present application, where as shown in fig. 7, the method for binding data streams includes the following steps:

step 701: the terminal sends a second request message to the first core network element or the second core network element, wherein the second request message comprises a binding policy, and the binding policy comprises at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

The dual connectivity function is a first dual connectivity function or a second dual connectivity function;

Here, the second request message includes a session establishment request message or a session modification request message.

In an embodiment, the second request message sent by the terminal includes a binding relationship, where the binding relationship is used to indicate that the established and/or modified data flow and/or session is bound to an access network element. For example: and all data streams established by the terminal for the first session are transmitted through the RAT-1, and all the newly established data streams are transmitted through the RAT-2 when the terminal initiates the second request message for the second time.

In an embodiment, the second request message sent by the terminal includes a mapping relationship, where the mapping relationship is used to indicate that one data flow and/or tunnel corresponds to one RAT indication information or multiple RAT indication information. Further, when one data flow and/or tunnel corresponds to a plurality of RAT indication information, each RAT indication information in the plurality of RAT indication information corresponds to one priority information.

Then, the flows of the access network side and the core network side can be understood by referring to the description of the method for binding data streams shown in fig. 5 and the description of the method for binding data streams shown in fig. 2, and are not described again.

The above is that the terminal indicates, through the second request message, to which access network element the data flow and/or session that needs to be established and/or modified should be bound. Without being limited thereto, the terminal may also determine, in an implicit manner, to which access network element the data stream and/or the session that needs to be established and/or modified should be bound, specifically, the terminal sends the second request message to the first core network element or the second core network element, where when the terminal sends the second request message multiple times, the data stream and/or the session that is established and/or modified by different second request messages needs to be bound to different access network elements for transmission. For example, the terminal sends the second request message for the first time, and the established and/or modified data stream and/or session are bound to RAT-1 for transmission; the terminal sends a second request message a second time, this time the established and/or modified data flow and/or session is bound to RAT-2 for transmission.

Fig. 8 is a schematic structural diagram of a device for binding data streams according to an embodiment of the present application, where as shown in fig. 8, the device includes:

a receiving unit 801, configured to receive a request message for establishing or modifying a data stream in a PDU session sent by a first core network element;

a binding unit 802, configured to bind, according to the establishment request message or the modification request message, each data flow and/or session to be established or modified and/or at least one tunnel to be used for transmitting data between the core network and the access network to a radio bearer under a corresponding RAT.

the device further comprises: a storing unit 803, 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 802 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 modified, and bind each data flow to be established or modified and/or a session to a radio bearer under the corresponding RAT.

In an embodiment, the binding policy is sent to the terminal by a network side.

In one embodiment, the apparatus further comprises:

a sending unit 804, configured to send an acknowledgement message to the first core network element.

In an embodiment, the receiving unit 801 is further configured to receive fourth indication information sent by the first core network element, and determine whether to open a multi-connection function based on the fourth indication information; or, determining to start the multi-connection function under the condition of receiving the at least two pieces of tunnel information sent by the first core network element.

In one embodiment, the multiple connection function includes at least a dual connection function. Further, the dual connectivity function is a first dual connectivity function or a second dual connectivity function;

It will be understood by those skilled in the art that the functions implemented by each unit in the apparatus for binding data streams shown in fig. 8 can be understood by referring to the related description of the method for binding data streams. The functions of the units in the apparatus for binding data streams shown in fig. 8 can be implemented by a program running on a processor, and can also be implemented by specific logic circuits.

Fig. 9 is a schematic structural diagram of a device for binding data streams according to an embodiment of the present application, where as shown in fig. 9, the device includes: a transmitting unit 901.

In an embodiment, the sending unit 901 is configured to send a second request message to a first core network element or a second core network element, where the second request message includes a binding policy, and the binding policy includes at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

Further, the second request message includes a session establishment request message or a session modification request message.

Further, the second request message sent by the terminal includes a binding relationship, where the binding relationship is used to indicate that the established and/or modified data stream and/or session is bound to an access network element.

In the foregoing solution, the second request message sent by the terminal includes a corresponding relationship, where the corresponding relationship is used to indicate that one data flow and/or tunnel corresponds to one RAT indication information or multiple RAT indication information. Further, when one data flow and/or tunnel corresponds to a plurality of RAT indication information, each RAT indication information in the plurality of RAT indication information corresponds to one priority information.

In another embodiment, the sending unit 901 is configured to send the second request message to the first core network element or the second core network element, where when the second request message is sent multiple times, data streams and/or sessions established and/or modified by different second request messages need to be bound to different access network elements for transmission.

It will be understood by those skilled in the art that the functions implemented by the units in the apparatus for binding data streams shown in fig. 9 can be understood by referring to the related description of the method for binding data streams. The functions of the units in the apparatus for binding data streams shown in fig. 9 can be implemented by a program running on a processor, and can also be implemented by specific logic circuits.

The device for binding data streams in the embodiment of the present application, if implemented in the form of a software functional module and sold or used as an independent product, may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or portions thereof contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.

Accordingly, the present application further provides a computer storage medium, in which computer executable instructions are stored, and when executed by a processor, the computer executable instructions implement the method for binding data streams of the present application.

Fig. 10 is a schematic structural diagram of a computer device according to an embodiment of the present application, where the computer device may be a terminal or a network device. As shown in fig. 10, the computer device 100 may include one or more processors 1002 (only one of which is shown in the figure), the processors 1002 may include, but are not limited to, a processing device such as a Microprocessor (MCU) or a Programmable logic device (FPGA), a memory 1004 for storing data, and a transmission device 1006 for communication functions. It will be understood by those skilled in the art that the structure shown in fig. 10 is merely illustrative and is not intended to limit the structure of the electronic device. For example, computer device 100 may also include more or fewer components than shown in FIG. 10, or have a different configuration than shown in FIG. 10.

The memory 1004 can be used for storing software programs and modules of application software, such as program instructions/modules corresponding to the methods in the embodiments of the present application, and the processor 1002 executes various functional applications and data processing by running the software programs and modules stored in the memory 1004, so as to implement the methods described above. The memory 1004 may include high-speed random access memory, and may 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, the memory 1004 may further include memory located remotely from the processor 1002, which may be connected to the computer device 100 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission device 1006 is used for receiving or sending data via a network. Specific examples of such networks may include wireless networks provided by the communications provider of the computer device 100. In one example, the transmission device 1006 includes a Network adapter (NIC) that can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 1006 can be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.

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

In the several embodiments provided in the present application, it should be understood that the disclosed method and intelligent device may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional units in the embodiments of the present application may be integrated into one second processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

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

Claims

1. A method of binding data flows, the method comprising:

the first access network element binds each data flow and/or session and/or at least one tunnel to be established or modified to a radio bearer under a corresponding RAT according to the establishment request message or the modification request message, wherein the at least one tunnel is used for transmitting data between a core network and an access network;

the setup request message or the modification request message includes first indication information, the first indication information including at least one of:

the corresponding relation between the tunnel information corresponding to at least one tunnel and the RAT indication information;

the first indication information also comprises indication information of whether the data stream to be established or modified is shunted and/or indication information of whether uplink and downlink transmission corresponds to the same RAT;

2. The method of claim 1, wherein at least one third core network element is connected to the first and second access network elements, respectively; and the data at the side of the first access network element is transmitted through a tunnel between the first access network element and the at least one third core network element, and the data at the side of the second access network element is transmitted through a tunnel between the second access network element and the at least one third core network element.

3. The method of claim 1, wherein one data flow and/or tunnel corresponds to one RAT indication information or a plurality of RAT indication information.

4. The method of claim 3, wherein when one data flow and/or tunnel corresponds to multiple RAT indication information, each of the multiple RAT indication information corresponds to one priority information.

5. The method according to any one of claims 1 to 4, wherein a RAT corresponding to DNN and/or S-NSSAI is configured in subscription information, so that the first core network element determines, according to the subscription information, a RAT corresponding to a PDU session established or modified based on the DNN and/or S-NSSAI, and a third indication information is carried in an establishment request message or a modification request message sent by the first core network element to the first access network element, and the third indication information is used for indicating the RAT corresponding to the PDU session.

6. The method according to any of claims 1 to 4, wherein the binding operation of the data flow to be established or modified and/or the at least one tunnel to a radio bearer under the corresponding RAT is triggered by: and the second core network element sends a first request message to the first core network element.

7. The method of claim 6, wherein the first request message is sent by a third party server to the second core network element and forwarded by the second core network element to the first core network element.

8. The method of any of claims 1 to 4, wherein the method further comprises:

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, wherein the second request message includes a binding policy, and the binding policy includes at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: packet characteristic information, Applicationid.

9. The method of claim 8, wherein the binding policy is sent to the terminal by a network side.

10. The method of any of claims 1 to 4, wherein the method further comprises:

11. The method of any of claims 1 to 4, wherein the method further comprises:

12. The method of claim 11, wherein the fourth indication information is further used for indicating a type of each access network element in the multi-connection.

13. The method of claim 12, wherein when there are N pieces of tunnel information and the fourth indication information sent to the first access network element, a tunnel is established for each access network element for data transmission, where N is greater than or equal to 2.

14. The method of claim 8, wherein the multi-connection functionality comprises at least a dual-connection functionality.

15. An apparatus to bind data flows, the apparatus comprising:

a binding unit, configured to bind, according to the establishment request message or the modification request message, each data flow and/or session to be established or modified and/or at least one tunnel to a radio bearer under a corresponding RAT, where the at least one tunnel is used to transmit data between a core network and an access network;

16. The apparatus of claim 15, wherein at least one third core network element is connected to the first access network element and the second access network element, respectively; and the data at the side of the first access network element is transmitted through a tunnel between the first access network element and the at least one third core network element, and the data at the side of the second access network element is transmitted through a tunnel between the second access network element and the at least one third core network element.

17. The apparatus of claim 15, wherein one data flow and/or tunnel corresponds to one RAT indication information or multiple RAT indication information.

18. The apparatus of claim 17, wherein when one data flow and/or tunnel corresponds to multiple RAT indication information, each RAT indication information of the multiple RAT indication information corresponds to one priority information.

19. The apparatus according to any one of claims 15 to 18, wherein a RAT corresponding to DNN and/or S-NSSAI is configured in subscription information, so that the first core network element determines, according to the subscription information, a RAT corresponding to a PDU session established or modified based on the DNN and/or S-NSSAI, and an establishment request message or a modification request message sent by the first core network element to a first access network element carries third indication information, where the third indication information is used to indicate the RAT corresponding to the PDU session.

20. The apparatus according to any of claims 15 to 18, wherein the binding operation of the data flow to be established or modified and/or the at least one tunnel to a radio bearer under the corresponding RAT is triggered by: and the second core network element sends a first request message to the first core network element.

21. The apparatus of claim 20, wherein the first request message is sent by a third party server to the second core network element and forwarded by the second core network element to the first core network element.

22. The apparatus according to any one of claims 15 to 18, 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 server sends a second request message to the first core network element or the second core network element, wherein the second request message includes a binding policy, and the binding policy includes at least one of the following: the method comprises the following steps of obtaining attribute information of data flow, corresponding relation between PDU conversation and RAT, indication information of whether a multi-connection function is supported, and indication information of whether multi-connection is triggered, wherein the attribute information comprises at least one of the following information: data packet characteristic information and Application id.

23. The apparatus of claim 22, wherein the binding policy is sent to the terminal by a network side.

24. The apparatus of any of claims 15 to 18, wherein the apparatus further comprises:

25. The apparatus according to any one of claims 15 to 18, wherein the receiving unit is further configured to receive fourth indication information sent by the first core network element, and determine whether to open a multi-connection function based on the fourth indication information; or, determining to start the multi-connection function under the condition of receiving the at least two pieces of tunnel information sent by the first core network element.

26. The apparatus of claim 25, wherein the fourth indication information is further used for indicating a type of each access network element in the multi-connection.

27. The apparatus of claim 26, wherein when there are N tunnels and the fourth indication information is sent to the first access network element, a tunnel is established for each access network element for data transmission, where N is greater than or equal to 2.

28. The apparatus of claim 22, wherein the multi-connection functionality comprises at least a dual-connection functionality.

29. A computer storage medium having stored thereon computer-executable instructions which, when executed by a processor, carry out the method steps of any of claims 1 to 14.