WO2025130961A1 - Data routing method, terminal, and network-side device - Google Patents

Abstract

The present application belongs to the technical field of communications. Disclosed are a data routing method, a terminal, and a network-side device. The data routing method in the embodiments of the present application comprises: a terminal receiving first information, wherein the first information is used for indicating at least one of the following: at least one transmission network corresponding to one or more data streams, one of the transmission networks supporting at least one radio access technology (RAT) type, and at least one RAT type corresponding to the one or more data streams; and the terminal executing a first operation on a target data stream on the basis of the first information, wherein the first operation comprises at least one of the following: associating the target data stream with at least one RAT type or at least one transmission network; establishing a socket connection under at least one RAT type or at least one transmission network for the target data stream; and establishing or using a session under at least one RAT type or at least one transmission network for the target data stream.

Description

Data routing method, terminal and network side equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed with the China Patent Office on December 20, 2023, with application number 202311770566.8 and invention name “Data Routing Method, Terminal and Network Side Equipment”. The entire contents of the Chinese patent application are incorporated herein by reference.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a data routing method, a terminal and a network side device.

Background Art

With the development of communication technology, in order to meet different communication needs, terminals have been able to support a variety of different transmission networks, such as networks corresponding to multiple public land mobile networks (PLMN) identifiers, and can support a variety of different radio access technologies (RAT), such as non-terrestrial networks (NTN), 6G, 5G, 4G, etc.

However, how to implement data transmission under different RAT types or under different transmission networks, or how to select different RAT types or transmission networks for data streams, is still a technical problem that needs to be urgently solved in the field.

Summary of the invention

The embodiments of the present application provide a data routing method, a terminal, and a network-side device, which can implement data routing under different RAT types or different transmission networks.

In a first aspect, a data routing method is provided, comprising: a terminal receives first information, wherein the first information is used to indicate at least one of the following: at least one transmission network corresponding to one or more data streams, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data streams; the terminal performs a first operation on a target data stream according to the first information, wherein the first operation comprises at least one of the following: associating the target data stream with at least one RAT type or at least one transmission network; establishing a socket connection under at least one RAT type or at least one transmission network for the target data stream; and establishing or using a session under at least one RAT type or at least one transmission network for the target data stream.

In a second aspect, a data routing method is provided, including: a first network device sends first information to a terminal; wherein the first information is used to indicate at least one of the following: a transmission network corresponding to one or more data streams, wherein the transmission network supports at least one radio access technology RAT type; and at least one RAT type corresponding to one or more of the data streams.

In a third aspect, a data routing device is provided, comprising: a transmission module, used to receive first information, wherein the first information is used to indicate at least one of the following: at least one transmission network corresponding to one or more data streams, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data streams; an execution module, used to perform a first operation on a target data stream according to the first information, wherein the first operation includes at least one of the following: associating the target data stream with at least one RAT type or at least one transmission network; establishing a socket connection under at least one RAT type or at least one transmission network for the target data stream; and establishing or using a session under at least one RAT type or at least one transmission network for the target data stream.

In a fourth aspect, a data routing device is provided, comprising: a transmission module, used to send first information to a terminal; wherein the first information is used to indicate at least one of the following: at least one transmission network corresponding to one or more data streams, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data streams.

In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method described in the first aspect.

In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method described in the second aspect.

In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

In the twelfth aspect, a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium, and the program/program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

In an embodiment of the present application, for a terminal that supports multiple transmission networks or RAT types, the present application performs data routing based on the transmission network or RAT type as the granularity, thereby being able to select a more accurate data routing method for the data stream, effectively improving the data routing efficiency, ensuring the quality of data transmission, and avoiding the problem that the terminal is unclear about how to select the RAT type or transmission network in the data routing solution provided in the related art.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a wireless communication system provided by an exemplary embodiment of the present application.

FIG. 2 is a flowchart of a data routing method according to an exemplary embodiment of the present application.

FIG. 3 is a second flowchart of a data routing method provided by an exemplary embodiment of the present application.

FIG. 4 a is one of the interactive flow diagrams of a data routing method provided by an exemplary embodiment of the present application.

FIG. 4 b is a schematic diagram of a data flow routing process provided by an exemplary embodiment of the present application.

FIG. 4c is one of the schematic diagrams of the internal structure of the terminal provided by an exemplary embodiment of the present application.

FIG. 4d is a second schematic diagram of the internal structure of a terminal provided by an exemplary embodiment of the present application.

FIG. 5 is a third flowchart of a data routing method provided by an exemplary embodiment of the present application.

FIG. 6 is a schematic diagram of a data routing device according to an exemplary embodiment of the present application.

FIG. 7 is a second schematic diagram of the structure of a data routing device provided by an exemplary embodiment of the present application.

FIG8 is a schematic diagram of the structure of a communication device provided by an exemplary embodiment of the present application.

FIG. 9 is a schematic diagram of the structure of a terminal provided by an exemplary embodiment of the present application.

FIG. 10 is a schematic diagram of the structure of a network-side device provided by an exemplary embodiment of the present application.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character "/" generally indicates that the objects associated with each other are in an "or" relationship.

The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as ^6th Generation (6G) communication systems.

FIG1 shows a block diagram of a wireless communication system applicable to the embodiment of the present application. The wireless communication system includes a terminal 11 and a network side device 12 . Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), a flight vehicle (flight vehicle), a vehicle user equipment (VUE), a shipborne equipment, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc. Among them, the base station can be called Node B (Node B, NB), Evolved Node B (Evolved Node B, eNB), the next generation Node B (the next generation Node B, gNB), New Radio Node B (New Radio Node B, NR Node B), access point, Relay Base Station (Relay Base Station, RBS), Serving Base Station (Serving Base Station, SBS), Base Transceiver Station (Base Transceiver Station, BTS), radio base station, radio transceiver, base The base station is not limited to specific technical terms as long as the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

The core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery ... user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user ion, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is taken as an example for introduction, and the specific type of the core network device is not limited.

It is worth noting that the first network device and the second network device mentioned in the context of this application have one or more network functions in the above core network devices. For example, the first network device may have but is not limited to PCF, and the second network device has the UDM, etc.

The terminal mentioned in the above text of this application may include an operating system (Operation System, OS), a chip or a module or a modem, a terminal application layer or an application APP, etc.

In addition, for ease of understanding, some technical terms involved in this application are introduced here as follows.

1. ATSSS Features

The ATSSS feature is a feature that allows the terminal and the network to communicate through both 3GPP access and non-3GPP access.

The ATSSS feature can realize multi-access PDU Connectivity Service. The terminal accesses the network or transmits data through two access technologies (such as one 3GPP access technology and one non-3GPP access technology). The two accesses respectively establish two independent N3/N9 tunnels between the PDU Session Anchor (PSA) and the Radio Access Network (RAN)/Access Network (AN), and realize PDU exchange between the terminal and the data network. Multi-access PDU session is realized by establishing a multi-access PDU session, that is, a PDU session can have user plane resources on two access networks.

In layman's terms, the ATSSS feature is actually the network establishing a multi-access PDU session for the terminal, which is established in two access modes at the same time and transmits data in two access modes at the same time. In other words, multiple sessions can be established in two access modes at the same time, for example, a session under 5G access and a session under satellite access.

Among them, the ATSSS characteristics can be realized based on the following two steering functions.

-Based on high-layer multi-path Transmission Control Protocol (TCP).

-Based on low-layer ATSSS function.

Based on this, the several steering modes (Steering mode) currently involved in the ATSSS characteristics are as follows.

1) Active-standby mode: When the primary access or active access is unavailable, the service data flow (SDF) is switched to other standby access. When the active access is available again, it is switched back to the active access.

2) Smallest delay: Switch the SDF to the access with the shortest round-trip time (RTT). The RTT of 3GPP access and non-3GPP access can be obtained through measurements on the terminal and the network side (such as UPF).

3) Load balancing: When both 3GPP access and non-3GPP access are available, data can be split between the two accesses. For example, data can be transmitted between the two accesses based on the SDF traffic percentage. This load balancing is only used for SDFs that do not require a guaranteed bit rate (non-Guaranteed Bit Rate, Non-GBR).

4) Priority-based: Different access modes can be set to correspond to different priorities, and data streams can be transmitted on high-priority access first. When the high-priority access is congested, SDF can transmit it on low-priority access by splitting. How the terminal and the network side (such as UPF) decide whether the high-priority access is congested is based on implementation.

It should be noted that the steering modes provided in 2), 3), and 4) above are used for the transmission of SDF without guaranteed bit rate (non-Guaranteed Bit Rate, Non-GBR). When the preferred access is unavailable, another access is used.

5) Redundant: Data is duplicated and transmitted in two access modes, that is, the data streams transmitted in the two access modes are the same.

It is worth noting that the diversion mode or strategy involved in the ATSSS feature is similar to the aforementioned guidance mode and will not be repeated here.

In addition, the 3GPP access mentioned in the context of this application may include but is not limited to LTE access, 4G access, NR access, 5G access, non-terrestrial network (NTN) access, 6G access and other RAT types.

The non-3GPP access mentioned in the context of this application may include but is not limited to WLAN access, Wifi access, Bluetooth access, etc.

2. UE Route Selection Policy (URSP) rule

The URSP rule is a policy defined by 3GPP and sent to the UE. The UE can match the traffic of the application (Application, APP) to a specific PDU session (session) according to the URSP rule.

For example, when an application on the UE wants to send traffic to the server, the APP can send APP traffic characteristics to the UE. There are many types of these traffic characteristics, such as the destination IP address, fully qualified domain name (Fully Qualified Domain Name, FQDN), etc. Then the UE matches the URSP rules in the UE one by one according to the traffic characteristics of the APP. Among them, the traffic description/characteristics specified by the URSP rules can be shown in Table 1.

For example, for IP descriptors, APP can send an IP descriptor to describe APP traffic, such as the destination IP triplet, that is, the APP traffic is to be sent to the destination IP = 10.1.1.1, port number = 80. Then, if the URSP rule in the UE happens to have this traffic descriptor, the APP traffic can be matched to a certain URSP rule. Finally, choose which PDU session to use to send the APP traffic.

Generally speaking, there can be multiple Route Selection Descriptors (RSDs) under a traffic descriptor. Each RSD represents a set of attributes of a PDU session or parameters of a PDU session. For example, when the APP traffic matches the traffic descriptor with destination IP = 10.1.1.1, port number = 80, there are several RSDs under the traffic descriptor:

■RSD precedence = 1

◆Single Network Slice Selection Assistance Information (S-NSSAI) - a

◆Non-3GPP Access

RSD precedence = 2

◆S-NSSAI-a

◆3GPP Access

DNN = Internet

◆Session and Service Continuity (SSC) mode = 3

That is, the characteristics of the PDU session corresponding to RSD1 are: S-NSSAI = S-NSSAI-a, using non-3GPP access; the characteristics of the PDU session corresponding to RSD2 are: S-NSSAI = S-NSSAI-a, using 3GPP access...

Table 1

Based on this, the technical solution provided by the embodiments of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

As shown in Figure 2, it is a flow chart of a data routing method 200 provided by an exemplary embodiment of the present application. The method 200 can be, but is not limited to, executed by a terminal, and can be specifically executed by hardware or software installed in the terminal. In this embodiment, the method 200 can at least include the following steps.

S210, the terminal receives first information.

The first information may be, but is not limited to, determined and sent by the first network device to indicate to the terminal at least one transmission network corresponding to one or more data streams and at least one RAT type corresponding to one or more data streams, so that the terminal can determine the RAT type or transmission network when transmitting the target data stream according to the first information, such as the subsequent S220. It can be understood that the first network device mentioned in the context of this application may include, but is not limited to, PCF, etc.

It can be understood that, compared with the data routing scheme based on 3GPP access type or non-3GPP access type provided in the related art, the present application directly transmits or routes data streams from the data stream access granularity of RAT type or transmission network, which enables the terminal to select a more matching and reliable data routing scheme, thereby improving data routing efficiency.

Optionally, the data flow mentioned in the context of this application may be, but is not limited to, the application data flow of one or more APPs in the terminal, the corresponding data flow of one or more PDU sessions, etc.

The aforementioned "at least one transmission network corresponding to one or more of the data streams" can be understood as: one or more of the data streams should or can or support or need to be transmitted and routed in at least one of the transmission networks. Among them, if a data stream can be transmitted in multiple transmission networks, each transmission network can be configured with a priority or preference. In this embodiment, the transmission network can be identified or indicated by network identification information. In one implementation, the network identification information can be a PLMN ID.

Optionally, the transmission network may be, but is not limited to, a PLMN, an operator network, a non-3GPP network, etc. For example, assuming that the first information carries network identification information for indicating a transmission network of the data stream, such as PLMN ID = 1, then it can be determined that the data stream supports or can or needs to or should perform data transmission under the transmission network corresponding to PLMN ID = 1. In other words, the terminal can send or receive the data stream according to the transmission network of the data stream.

In an optional implementation, one of the transmission networks supports at least one RAT type, which can be understood as: PLMN, operator network or non-3GPP network can support one or more RAT types. For example, assuming that the terminal determines that the RAT types supported by the PLMN are 4G and 5G according to the first information, that is, the RAT type it does not support is 5G NTN, then the terminal can select one of the RAT types supported by the PLMN as the RAT type for transmitting the data stream.

In one implementation, if a transmission network supports multiple RAT types, each different RAT type can be configured with a priority, based on which the terminal can select a RAT type with a higher priority for the target data stream for transmission or routing. For example, if the transmission network with PLMN ID = 1 supports 4G RAT and 5G RAT, and 5G RAT has a higher priority, the terminal will preferentially select 5G RAT for the data stream.

In addition, if the transmission network supports multiple RAT types but the priority of each RAT type is not configured, then the terminal may determine to simultaneously transmit or route data streams based on the multiple RAT types supported by the transmission network.

The aforementioned "at least one RAT type corresponding to one or more data streams" can be understood as: one or more RAT types to which the data streams can be applied, or one or more RAT types matched by the data streams, or one or more RAT types that can be used by the data streams, etc. It can be understood that, in this embodiment, each of the data streams corresponds to at least one RAT type, or one or more data streams correspond to at least one RAT type, which is not limited here.

For example, assuming that one of the data flows corresponds to at least one RAT type, such as the first information indicates or stipulates that the data flow of APP1 on the terminal can only use 4G RAT or 5G RAT type, and other types of RAT types cannot be used. Then, the terminal can determine or select a RAT type for transmitting the data flow for the data flow according to at least one RAT type corresponding to the data flow.

Optionally, the RAT type mentioned in the above text of the present application may include at least one of a wireless network technology and a wired network technology. The wireless network technology may include at least one of LTE, 4G, NR, 5G, NTN, and 6G.

Of course, for different RAT types, the first information can further indicate which operator the RAT type corresponds to. For example, for 4G, it can indicate that the RAT type of the data flow is the 4G access type of operator 1, or the 4G access type of operator 2, etc., without any limitation here.

As an implementation method, the first information can be used as part of the traffic descriptor (TD), or the first information can be carried by the URSP rule and sent to the terminal for direct calling by the APP in the terminal or for the terminal to determine the APP traffic or the RAT type or transmission network requested by the APP to realize the transmission of its own data stream. It can also be used as part of the RSD for the OS or modem in the terminal to select a matching RSD for it, such as the RAT type or transmission network, based on the Socket establishment request sent by the APP to the OS.

For example, the URSP rule, or the traffic descriptor, or the RSD may carry the RAT type or the PLMN ID, etc. For another example, the URSP rule, or the traffic descriptor, or the path selection descriptor RSD may carry the first indication information, or the second indication information, or the parameters of the socket connection.

S220: The terminal performs a first operation for the target data stream according to the first information.

In one implementation, before executing the first operation, the terminal may also identify and determine the target data stream according to data stream description information, and then execute the first operation on the identified target data stream according to the first information.

In this embodiment, the first operation may include but is not limited to at least one of the following operations 1 to 3.

Operation 1: Associating the target data flow with at least one RAT type or at least one transport network.

Among them, the "associating the target data stream with at least one RAT type or at least one transmission network" can be understood as: matching or associating the target data stream to at least one RAT type for transmission; or, matching or associating the target data stream to at least one transmission network for transmission; or, the terminal establishes a PDU session or a public data network (PDN) connection on at least one RAT type for transmitting the target data stream; or, the terminal establishes a PDU session or PDN connection in at least one transmission network for transmitting the target data stream; or the terminal matches the target data stream to a PDU session or PDN connection under at least one RAT type, or, the terminal matches the target data stream to a PDU session or PDN connection in at least one transmission network.

It can be understood that the "at least one RAT type" in operations 1 to 3 can be at least one RAT type corresponding to the data flow indicated by the first information, or can be selected from at least one RAT type corresponding to the data flow indicated by the first information for the target data flow according to priority information, etc., and this embodiment does not limit this. Similarly, the "at least one transmission network" in operation 1 is similar to the "at least one RAT type", which will not be repeated here.

Operation 2: Establishing a socket connection under at least one of the RAT types or at least one of the transmission networks for the target data flow.

That is to say, when the target data stream needs to be transmitted or routed, the terminal may transmit or route the data stream based on a socket connection corresponding to at least one RAT type established for the target data stream, or transmit or route the data stream based on a socket connection under at least one transmission network established for the target data stream.

In one implementation, the terminal establishes a socket connection for the data flow under a module or chip corresponding to the RAT type.

Operation 3: Establish or use a session under at least one RAT type or at least one of the transport networks for the target data flow.

Among them, the session is different according to the different RAT types. For example, for 5G, the session is a PDU session, for 4G, the session is a PDN connection, and so on.

That is to say, when the target data stream needs to be transmitted or routed, the terminal can transmit or route the data stream based on a session under at least one RAT type established or used for the target data stream, or transmit or route the data stream based on a socket connection under at least one transmission network established for the target data stream.

In an optional implementation, for the aforementioned operations 1 to 3, the terminal may associate a data stream with one or more RAT types, or associate a data stream with one or more transmission networks, or the terminal may create or use a socket connection, PDU session, etc. under one or more RAT types for a data stream, or the terminal may create or use a socket connection, PDU session, etc. under one or more transmission networks for a data stream, and no limitation is made here.

It is worth noting that for the execution of the first operation, it can be the terminal described in this application, or it can be at least one of the core network devices, such as a network function in the core network device executing the first operation according to the first information, etc., and there is no limitation here.

In this embodiment, for a terminal that supports multiple transmission networks or RAT types, the present application performs data routing based on the transmission network or RAT type as the granularity, thereby being able to select a more accurate data routing method for the data stream, effectively improving the data routing efficiency, ensuring the quality of data transmission, and avoiding the problem that the terminal is unclear about how to select the RAT type or transmission network in the data routing solution provided in the related art.

As shown in Figure 3, it is a flow chart of a data routing method 300 provided by an exemplary embodiment of the present application, and the method 300 can be, but is not limited to, executed by a terminal, and specifically can be executed by hardware or software installed in the terminal. In this embodiment, the method 300 can at least include the following steps.

S310, the terminal receives first information.

The first information is used to indicate at least one of the following: at least one transmission network corresponding to one or more data streams, wherein one of the transmission networks supports at least one RAT type; and at least one RAT type corresponding to one or more of the data streams.

S320: Execute a first operation according to the first information.

The first operation includes at least one of the following operations 1 to 3.

Operation 1: Associating the target data flow with at least one RAT type or at least one transport network.

Operation 2: Establish a socket connection under at least one RAT type or at least one transport network for the target data flow.

Operation 3: Establish or use a session under at least one RAT type or at least one transport network for the target data flow.

It can be understood that the implementation process of S310-S320 can refer to the relevant description in the aforementioned method embodiment 200. Of course, in addition to referring to the relevant description in the aforementioned method embodiment 200, as an optional implementation, the first information can include but is not limited to at least one of data stream description information and transmission configuration of one or more data streams.

Among them, the data flow description information is used to describe the characteristic information of one or more of the data flows. For example, in this embodiment, taking a data flow as an example, the data flow description information may include but is not limited to at least one of the data network name (Data Network Name, DNN), application descriptor (APP descriptor), connection capability (Connection Capability), IP descriptor (IP descriptor), domain name descriptor (Domain descriptor), and non-IP descriptor (Non-IP descriptor). It can be understood that the data flow description information can also be called a traffic descriptor (Traffic descriptor, TD). Regarding the DNN, APP descriptor, Connection Capability, IP descriptor, domain name descriptor, and Non-IP descriptor, please refer to the description in the aforementioned Table 1, which will not be repeated here.

Based on this, in one implementation, the terminal may identify or determine the target data stream based on the data stream description information, and then perform the first operation in subsequent S330 according to the identified or determined target data stream.

The transmission configuration of one or more data streams is used to indicate the relevant configuration used when transmitting one or more data streams. It is worth noting that, for a data stream, its corresponding data stream description information can be associated with at least one transmission configuration of the data stream. That is, the terminal can first identify or determine the target data stream according to the data stream description information, and then the terminal selects a transmission configuration from the transmission configuration of at least one data stream associated with the data stream description information for the transmission or routing of the target data stream.

In an optional implementation, the transmission configuration of the data stream may include but is not limited to at least one of the first indication information, the identifier of the terminal, the second indication information, the parameters of the socket connection, and the parameters of the first session or connection.

The first indication information is used to indicate the priority of the RAT type or the transmission network, or to indicate the preferred RAT type or the transmission network. For example, assuming that the terminal supports multiple different RAT types, such as 5G and 4G, the first indication information can be used to indicate that 5G has the highest priority or tends to select 5G when transmitting the data stream. In addition, the first indication information can also carry an identifier of a preferred or preferred transmission network or RAT type, etc.

Of course, if the first indication information is used to indicate the priority or preference of the RAT type, then the RAT type indicated in the first indication information can also be associated with the transmission network or the first indication information can also include network identification information corresponding to the transmission network to indicate which transmission network the priority or preferred RAT type is the access type or method under.

The terminal identifier is used to identify the terminal to which the transmission configuration of the one or more data streams is applicable or applied.

The parameters of the socket connection are used to indicate the socket connection proposed by the first network device and can be used for accessing or transmitting the data stream.

The parameters of the first session or connection are used to instruct the terminal to transmit the data stream under the session or connection corresponding to the parameters of the first session or connection. In this embodiment, the parameters of the first session or connection may include but are not limited to DNN, S-NSSAI, SSC mode, access point name (APN) list, RAT type, etc. In this embodiment, the first session or connection may be but is not limited to a PDU session under 5G access, a PDN connection under 4G access type, etc.

In one embodiment, the parameters of the first session or connection may also be used to indicate the parameters used by the terminal to establish a session or connection in the RAT type or transmission network; or, to indicate that when the terminal associates the data stream in the RAT type or transmission network, the data stream is associated with the session or connection corresponding to the parameters of the first session or connection. For example, when the RAT type of the terminal is 5G, its first session parameters include SSC mode 3, DNN=1, then the terminal will establish a session under the RAT type of 5G, and the session parameters are SSC mode 1, DNN=1.

Exemplarily, in one embodiment, when performing the first operation, the terminal may first determine the target data flow based on the data flow description information in the first information, and then determine the RAT type or transmission network corresponding to the target data flow based on the transmission configuration of the data flow in the first information. Finally, the terminal determines the session or connection under the RAT type or transmission network based on the parameters of the first session or connection.

The second indication information is used to indicate a method for processing the data flow, such as performing at least one of unloading, guiding, redirecting, transferring, shunting, and merging on the data flow. For example, the second indication information may be used to indicate that it is necessary, allowed, possible, capable, attempted, or supported to unload, guide, redirect, transfer, shunting, or merging the data flow or PDU session, etc., such as the data flow may be unloaded, guided, redirected, transferred, shunted, or merged to at least one target RAT type or at least one target transport network or target PDU session or target PDN connection, etc.

For example, assuming that the data flow is a data flow corresponding to a PDU session or a PDN connection, the second indication information can be used to indicate the need, permission, possibility, ability, attempt or support for unloading, guiding, redirecting, transferring, diverting, or merging a PDU session or PDN connection, such as unloading, guiding, redirecting, transferring, diverting, or merging to at least one target RAT type or at least one target transmission network or a target PDU session or a target PDN connection.

Optionally, if the second indication information is used to indicate diversion, then the second indication information can also be used to indicate the diversion mode adopted when diverting. The diversion mode can refer to the relevant diversion mode in the aforementioned ATSSS characteristics, such as load balance, priority, etc., which will not be repeated here.

Based on this, in an optional implementation, if the first information only includes the second indication information, the terminal may unload, guide, redirect, transfer, split, or merge data flows based on any transmission network or RAT type, or may unload, guide, redirect, transfer, split, or merge data flows based on the transmission network or RAT type indicated in the first information. Assuming that the data flow is unloaded, guided, redirected, transferred, split, or merged based on the transmission network or RAT type indicated by the first information, the first information may further include information on the network or RAT type used for unloading, guiding, redirecting, transferring, splitting, or merging data flows, such as at least one of the session parameters or connection parameters under the network or RAT type.

The session parameters are used to describe the session parameters of the data flow being offloaded, directed, diverted, transferred, split, or merged to the target session. Optionally, the session parameters may include but are not limited to DNN, S-NSSAI, SSC, APN, RAT type, etc. In this embodiment, the session parameters may be but are not limited to session parameters of a PDU session under 5G, etc.

The connection parameters are used to describe the connection parameters of the data flow being offloaded, directed, diverted, transferred, split, or merged to the target connection. Optionally, similar to the session parameters, the connection parameters may include but are not limited to DNN, S-NSSAI, SSC, APN, RAT type, etc. In this embodiment, the connection parameters may be but are not limited to PDN connection under 4G, etc.

Based on this, in one embodiment, the session parameters or connection parameters can also be used to indicate the parameters of the target session or connection to which the data stream is unloaded, directed, diverted, transferred, split, or merged when the data stream is unloaded, directed, diverted, transferred, split, or merged. Wherein, the target session or connection is under a certain RAT type or a certain transmission network, and the terminal first determines the RAT type or transmission network according to the first information, and then determines the second indication information, session parameters, connection parameters, or session parameters of the target session corresponding to the second indication information under the RAT type or transmission network.

Of course, there may be multiple ways to receive the aforementioned first information. For example, in an optional implementation, the terminal may receive the first information in a way that includes but is not limited to at least one of the following ways 1-2, thereby ensuring flexibility in receiving the first information.

Mode 1: The terminal receives a downlink Non Access Stratum (NAS) message, and the downlink NAS message includes the first information. For example, assuming that the terminal is in a 4G and 5G dual registration state, then the terminal can receive a 4G NAS message or a 5G NAS message, and the 4G NAS message or the 5G NAS message includes the first information, etc., which is not limited here.

Optionally, the downlink NAS message may be, but is not limited to, a PDU session modification acceptance, or a PDU session establishment acceptance, etc.

Method 2: The terminal receives the first information through the terminal configuration update process (UE Configuration Update, UCU).

In one implementation, for the above-mentioned method 1 and method 2, the terminal may receive a downlink NAS message through a modem, where the downlink NAS message includes the first information.

Based on this, in one implementation, the modem in the terminal can send the first information to the OS or the application on the terminal or the application layer on the terminal through an interface with the OS in the terminal. Optionally, the modem in the terminal can send the first information to the terminal OS or the terminal APP through an AT command (Attention command, AT command).

Alternatively, the modem in the terminal may send the first information to the OS through an interface with the OS in the terminal, and the OS then sends the first information to an application on the terminal or an application layer on the terminal.

Based on the foregoing content, in one implementation, the process by which the terminal performs the first operation based on the first information may include but is not limited to: the APP (or APP agent) on the terminal sends a request (such as a Socket establishment request) to the OS or modem in the terminal, and the request carries at least one item of the RAT type or network identification information, used to instruct the terminal to use the network corresponding to the requested RAT type or network identification information to transmit the data stream of the APP, or to establish a socket connection in the network corresponding to the requested RAT type or network identification information, or to establish the PDU session or PDN connection, etc.

In another optional implementation, for example, the first network device, in order to ensure the validity of the first information, the first network device may perform the step of sending the first information to the terminal when a predetermined condition is met. For example, only when the terminal is in dual registration or has dual registration capability, the terminal has two 3GPP accesses, and then the terminal may select a transmission data stream from two RAT types, so that the network side matches different routing strategies for the terminal according to different states. For example, only when the terminal has dual registration capability or is in dual registration state, the network side will send the first information to the terminal.

The predetermined condition includes at least one of the following conditions 1 to 4.

Condition 1: The terminal is in dual registration state.

The dual registration state may be different depending on the RAT type supported by the terminal. For example, if the terminal supports 4G access and 5G access, the terminal is in a 4G and 5G dual registration state, or if the terminal supports 5G access and NTN access, the terminal is in a 5G and NTN dual registration state, or if the terminal is registered under 4G or 5G at the same time, the terminal is in a dual registration state.

Condition 2: The terminal has dual registration capability.

Among them, condition 2 is similar to condition 1, that is, the dual registration capability may be different according to the different RAT types supported by the terminal. For example, if the terminal supports 4G access and 5G access, then the terminal has 4G and 5G dual registration capabilities, etc., or if the terminal supports 5G access and NTN access, then the terminal has 5G and NTN dual registration capabilities, etc., or the terminal has the ability to support registration under multiple networks.

Condition 3: The terminal supports the first capability.

Among them, the first capability may include but is not limited to at least one of a data stream selection capability, a RAT type determination capability, and a network identification information determination capability. Among them, the data stream selection capability may be but is not limited to an APP data stream selection capability, etc. The RAT type determination capability may be understood as the ability to determine the RAT type for a data stream that needs to be transmitted or routed. The network identification information determination capability may be understood as the ability to determine a transmission network for a data stream that needs to be transmitted or routed.

That is, a new terminal capability, namely the first capability, is designed in the present application to be the capability of selecting or determining the RAT type or transmission network for the data flow.

Condition 4: The terminal is a contracted terminal. That is, only a contracted terminal can obtain the first information from the first network device.

Based on this, there may be multiple ways to obtain the aforementioned conditions 1 to 4. For example, as an optional implementation method, the first network device may receive second information from the second network device. The second information includes at least one of the following: the terminal is in a dual registration state, the terminal supports dual registration capability, the terminal supports the first capability, and the terminal is a contracted terminal. The second network device may be, but is not limited to, UDM, AMF, etc. That is, the first network device may determine whether the predetermined condition for sending the first information is met based on the second information obtained from the second network device.

In one implementation, assuming that the first network device is a PCF and the second network device is a UDM, the first network device may receive the second information from the second network device based on at least one signaling item in 1)-2) below. The first signaling item may include at least one of the following items.

1) Terminal context management acquisition (UE context management, Nudm_UECM_Get) operation.

2) SubscriberDataManagement get (Nudm_SDM_Get) operation.

In another implementation, assuming that the first network device is PCF and the second network device is AMF, the first network device can receive the second information from the second network device based on N1 message notification (Namf_Communication_N1 MessageNotify).

In this embodiment, a data routing method is provided, which enables the terminal to select a corresponding RAT type or transmission network for the terminal according to the information of the data flow, so as to realize the routing or transmission of the data flow, thereby improving the efficiency and quality of data routing.

Especially for APP data flows with different business requirements, this application enables the terminal to apply the corresponding data flow specifications to different RAT types for transmission according to the business category of the APP through the indication of the first information. For example, for high-real-time services in Internet services, its data flow can be configured to be transmitted or routed through 5G access technology to ensure low latency. For services with low real-time requirements but high traffic consumption, its data flow can be configured to be transmitted or routed through 4G access technology to ensure throughput.

Based on the description of the aforementioned method embodiments 200-300, for ease of understanding, the implementation process of the data routing method provided in the present application is further exemplarily described below in combination with Examples 1-4, as follows.

Example 1

S411, as shown in FIG4a, the first network device (such as PCF) receives second information from the second network device (such as UDM).

S412: The first network device determines whether a predetermined condition is met according to the acquired second information, and sends the first information to the terminal if the predetermined condition is met. The first information includes at least one of data flow description information of one or more data flows and transmission configuration of one or more data flows, and one of the transmission networks supports at least one RAT type.

The predetermined condition includes at least one of the following conditions 1 to 4.

Condition 1: The terminal is in dual registration state.

Condition 2: The terminal has dual registration capability.

Condition 3: The terminal supports a first capability, and the first capability includes at least one of a data flow selection capability, a RAT type determination capability, and a network identification information determination capability.

Condition 4: The terminal is a contracted terminal.

S413, the terminal identifies or determines the target data flow according to the data flow description information in the first information, such as identifying the traffic of the upper layer APP.

S414, the terminal performs a first operation on the identified target data stream according to the transmission configuration of the data stream in the first information, such as associating the target data stream with at least one RAT type or at least one transmission network, or establishing a socket connection under at least one RAT type or at least one transmission network for the target data stream, or establishing or using a session under the RAT type indicated in the transmission configuration of the data stream or under the network corresponding to the network identification information for the data stream.

Based on this, if there is a PDU session or PDN connection under the RAT type indicated in the transmission configuration of the data flow, the first operation will be performed based on the existing PDU session or PDN connection.

If there is no PDU session or PDN connection under the RAT type indicated in the transmission configuration of the data flow, then a new PDU session or PDN connection under the RAT type indicated in the transmission configuration of the data flow may be created.

For example, as shown in Figure 4b, the terminal can establish a PDN connection to server 1 under 4G access for the target data flow corresponding to APP1 based on the first information, and establish a PDU session to server 2 under 5G access for the target data flow corresponding to APP 2.

It is worth noting that there are multiple ways to implement the terminal mentioned in the above process to perform the first operation according to the first information. The implementation process is exemplarily introduced below in conjunction with Figures 4c and 4d.

Implementation 1

Assume that the first network device is a PCF, the terminal is in a dual registration state, such as being registered in a 4G access mode and a 5G access mode at the same time, and the terminal supports receiving the first information through a 4G NAS message or a 5G NAS message, and the terminal may have a 4G session or a 5G session or no session. Then in this case, as shown in FIG4c, if the PCF generates the first information and sends the first information to the OS or APP agent (client) of the terminal through a 4G NAS message or a 5G NAS message, such as sending it to a higher layer or an APP or an application layer, the process of the terminal performing data routing based on the OS is as follows.

First, the APP client in the terminal sends a Socket establishment request to the OS, which may carry the APP ID, the target IP triplet, etc. Optionally, the Socket establishment request may also directly carry the RAT type or network identification information, which is used to indicate that a socket connection is established under the RAT type or the network corresponding to the network identification information, or that the data stream of the APP is transmitted using the requested RAT type or the network corresponding to the network identification information, or that the PDU session or PDN connection is established under the RAT type or the network corresponding to the network identification information.

Next, the OS identifies the target data flow corresponding to the Socket establishment request, such as APP traffic, based on the data flow description information in the first information, and determines the RAT type required to transmit the target data flow, namely RSD, according to the transmission configuration of the data flow in the first information.

Finally, the OS sends RSD (such as PDU session parameters) to the UE baseband (modem) corresponding to the RAT type, that is, the 4G/5G protocol stack, to request the UE modem to use these RSD parameters to establish a PDU session or use an existing PDU session to carry the APP traffic.

In one implementation, the UE APP or UE OS may also send RAT Type information or PDU session parameters to the UE modem (i.e., 4G/5G protocol stack) to request the UE modem to establish a socket connection or a PDU session or a PDN connection under the RAT type for routing the target data stream. Correspondingly, the UE modem establishes or selects a PDU session based on the received RAT Type and PDU session parameters.

Implementation 2

Assume that the first network device is a PCF, and the terminal is in a dual registration state, such as being registered in both the 4G access mode and the 5G access mode, and the terminal supports receiving the first information based on a 4G NAS message or a 5G NAS message. Of course, the terminal may have a 4G session or a 5G session or no session. In this case, as shown in FIG. 4d , when the PCF generates the first information and sends the first information to the modem of the terminal, such as a 4G modem or a 5G modem, through a 4G NAS message or a 5G NAS message, the process of the terminal performing data routing based on the modem is as follows.

First, the APP client sends a Socket establishment request to the OS, and the Socket establishment request may carry APPID, target IP triplet, etc. Optionally, the Socket establishment request may also directly carry the RAT type.

Next, the OS forwards the Socket establishment request to the 4G modem or 5G modem of the terminal.

Finally, taking the 5G modem as an example, if the 5G modem receives the Socket establishment request, it can identify the target data stream corresponding to the Socket establishment request based on the first information, such as APP traffic, and determine the RAT type required to transmit the APP traffic, namely RSD.

Among them, if it is identified that the RAT type required for the APP traffic is a 5G access mode, then the 5G modem can establish a PDU session or use an existing session to carry the APP traffic to achieve subsequent transmission or routing of the APP traffic.

Alternatively, if the RAT type required for the APP traffic is identified as a 4G access mode, the 5G modem may send the determined RAT type required for the APP traffic to the OS, which then forwards it to the 4G modem, so that the 4G modem establishes or selects a PDN connection that carries the APP traffic based on the RAT type required for the APP traffic.

Among them, when the 5G modem sends the determined RAT type required for the APP traffic to the OS, it can also map the RSD corresponding to the RAT type into PDN connection parameters available for 4G, etc., to facilitate the establishment or use of the PDN connection.

It is worth noting that the relevant description of each step in the data routing method provided in the aforementioned Example 1 can refer to the relevant description in the aforementioned method embodiments 200-300, and achieve the same or corresponding technical effects, which will not be repeated here to avoid repetition. In addition, Example 1 may include but is not limited to the aforementioned steps S411-S414, such as including more or fewer steps than the aforementioned steps S411-S414.

Example 2

Assume that the first network device is PCF and the terminal is in dual registration state, such as registering in 4G access mode and 5G access mode at the same time, then:

(1) The PCF may send first information to the terminal via a 5G NAS message or a 4G NAS message. Correspondingly, the terminal establishes a PDU session for the target data stream under the 5G access mode according to the first information.

In this case, the terminal can route or transmit the target data flow based on the PDU session.

Alternatively, if the terminal expects to establish a session through 4G, the terminal may further send a third indication message to the PCF to instruct the PCF to switch part of the session to the 4G network, such as switching the PDU session to a PDN connection. The third indication message may be sent through a 5G network or a 4G network.

Optionally, the third indication information may be sent when the second indication information is included in the first information, which is not limited here.

(2) The PCF sends the first information to the terminal via a 4G NAS message. Correspondingly, the terminal establishes a PDU session for the target data stream in a 4G access mode according to the first information.

In this case, the terminal can route or transmit the target data flow based on the PDU session.

Alternatively, if the terminal expects to establish a session through 5G, the terminal may further send a third indication message to the PCF to instruct the PCF to switch part of the session to the 5G network, such as switching the PDN connection to a PDU session. The third indication message may be sent through the 5G network or the 4G network.

Optionally, the third indication information may be sent when the second indication information is included in the first information, which is not limited here.

(3) The PCF sends the first information to the terminal via a 4G NAS message. Correspondingly, the terminal can establish or select multiple sessions for the target data stream in multiple different RAT access modes according to the first information, such as a 5G PDU session, a 4G PDN connection, etc.

In this case, the terminal may simultaneously transmit or route the target data stream based on the established or selected multiple sessions to improve the transmission or routing efficiency of the target data stream.

Example 3

In this example 3, assuming that the first information is used to indicate the RAT type supported by a data flow, it can be configured in the traffic descriptor (TD) as shown in Table 2. In this case, the implementation process of data routing based on it may include but is not limited to: the APP in the terminal directly calls and determines the RAT type. For example, the APP can directly request the RAT type and PLMN ID based on the traffic descriptor, then the terminal selects the RSD for the APP according to the APP request.

Table 2 URSP Rules

Alternatively, the RAT type supported by the data flow indicated by the first information, such as the 5G access mode, may also be introduced into the RSD as shown in Table 3. In this case, the implementation process of data routing based on it may include but is not limited to: the APP sends a traffic feature, and the terminal obtains an RSD matching the traffic feature according to the traffic feature, wherein the RSD specifies the RAT type that the traffic should use and the RAT type used under which transmission network (such as PLMN).

Table 3: RSD

Optionally, parameters under the RAT type, such as an APN list, may also be configured in the RSD.

Example 4

Assuming that a second indication information is introduced into the URSP rule, such as an offload indicator, it can be as shown in Table 4.

Of course, in addition to introducing the offload indication in the URSP rules as shown in Table 4, you can also refer to the non-3GPP offload indication in the relevant technology and introduce a 4G system (4GS), that is, the traffic of a certain APP can be offloaded to the 4G PDN connection.

For example, the APP sends a traffic signature, and the terminal obtains the RSD that matches the traffic signature, wherein the RSD specifies an offload instruction, that is, offloading the traffic to 4G. At the same time, the RSD can also indicate the PLMN ID, that is, offloading the traffic to the 4G used under the PLMN identified by the PLMN ID.

Of course, if it is determined to instruct 4G offloading, the RSD or URSP rule can also include the APN list under 4G access.

Table 4 URSP Rules

As shown in Figure 5, it is a flow chart of a data routing method 500 provided by an exemplary embodiment of the present application, and the method 500 can be, but is not limited to, executed by a first network device, and specifically can be executed by hardware or software installed in the first network device. In this embodiment, the method 500 can at least include the following steps.

S510: A first network device sends first information to a terminal.

The first information is used to indicate at least one of a transmission network of the data flow, a radio access technology RAT type supported by the transmission network, and a RAT type corresponding to the data flow.

In an optional implementation, the first information includes at least one of the following: data stream description information, used to describe characteristic information of the data stream; and transmission configuration of the data stream.

In an optional implementation, the transmission configuration of the data stream includes at least one of the following: first indication information, used to indicate the priority of the RAT type or the transmission network, or used to indicate the preferred RAT type or the transmission network; the identification of the terminal; second indication information, used to indicate at least one of unloading, guiding, steering, transferring, diverting, and merging the data stream; and parameters of the socket connection.

In an optional implementation, when the first information includes the second indication information, the first information also includes at least one of the following: a session parameter used to describe the session parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target session; a connection parameter used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target connection.

In an optional implementation, the session parameter or the connection parameter includes at least one of the following: DNN;

Single network slice selection auxiliary information S-NSSAI; service continuity SSC mode; access point name APN list; RAT type.

In an optional implementation, the data flow description information includes at least one of the following: data network name DNN; application descriptor APP descriptor; connection capability Connection Capability; IP descriptor IP descriptor; domain name descriptor Domain descriptor; non-IP descriptor Non-IP descriptor.

In an optional implementation manner, the transmission network is identified or indicated by network identification information.

In an optional implementation, the RAT type includes at least one of the following: wireless access technology, the wireless access technology including at least one of Long Term Evolution LTE, 4G, New Radio NR, 5G, Non-terrestrial Network NTN, and 6G; wired access technology.

In an optional implementation, the first network device sends the first information to the terminal, including at least one of the following: the first network device sends the first information through a downlink non-access layer NAS message; the first network device sends the first information through a terminal configuration update process UCU.

In an optional implementation, the method further includes: executing the step of sending the first information to the terminal when a predetermined condition is met; wherein the predetermined condition includes at least one of the following: the terminal is in a dual registration state; the terminal has a dual registration capability; the terminal supports a first capability, and the first capability includes at least one of a data stream selection capability, a RAT type determination capability, and a network identification information determination capability; and the terminal is a signed terminal.

In an optional implementation, the method also includes: receiving second information from a second network device; wherein the second information includes at least one of the following: the terminal is in a dual registration state; the terminal supports dual registration capability; the terminal supports the first capability; the terminal is a signed terminal.

It can be understood that each implementation method in method embodiment 500 has the same or corresponding technical features as the aforementioned method embodiments 200-300. Therefore, the relevant description of each implementation method in method embodiment 500 can refer to the relevant description in the aforementioned method embodiments 200-300, and achieve the same or corresponding technical effects. To avoid repetition, they will not be repeated here.

The data routing method provided in the embodiment of the present application can be executed by a data routing device. In the embodiment of the present application, the data routing device provided in the embodiment of the present application is described by taking the data routing method executed by the data routing device as an example.

As shown in Figure 6, it is a structural diagram of a data routing device 600 provided in an embodiment of the present application, and the device 600 includes: a transmission module 610, used to receive first information, wherein the first information is used to indicate at least one of the following: at least one transmission network corresponding to one or more data streams, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data streams; an execution module 620, used to perform a first operation on a target data stream according to the first information, wherein the first operation includes at least one of the following: associating the target data stream with at least one RAT type or at least one transmission network; establishing a socket connection under at least one RAT type or at least one transmission network for the target data stream; and establishing or using a session under at least one RAT type or at least one transmission network for the target data stream.

In an optional implementation, the first information includes at least one of the following: data stream description information, used to describe characteristic information of one or more of the data streams; and transmission configuration of one or more of the data streams.

In an optional implementation, the transmission configuration of the data stream includes at least one of the following: first indication information, used to indicate the priority or tendency of at least one of the RAT types, or used to indicate the priority or tendency of at least one transmission network; the identification of the terminal; second indication information, used to indicate at least one of unloading, guiding, steering, transferring, diverting, and merging of the data stream; and parameters of the socket connection.

In an optional implementation, when the first information includes the second indication information, the first information also includes at least one of the following: a session parameter used to describe the session parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target session; a connection parameter used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target connection.

In an optional implementation, the session parameter or the connection parameter includes at least one of the following: DNN;

Single network slice selection auxiliary information S-NSSAI; service continuity SSC mode; access point name APN list; RAT type.

In an optional implementation, the data flow description information includes at least one of the following: a data network name DNN;

Application descriptor APP descriptor; connection capability Connection Capability; IP descriptor IP descriptor; domain name descriptor Domain descriptor; non-IP descriptor Non-IP descriptor.

In an optional implementation manner, the transmission network is identified or indicated by network identification information.

In an optional implementation, the RAT type includes at least one of the following: wireless access technology, the wireless access technology including at least one of Long Term Evolution LTE, 4G, New Radio NR, 5G, Non-terrestrial Network NTN, and 6G; wired access technology.

In an optional implementation manner, the receiving the first information includes at least one of the following: receiving a downlink non-access stratum NAS message, the downlink NAS message including the first information; receiving the first information through a terminal configuration update process UCU.

The data routing device 600 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The data routing device 600 provided in the embodiment of the present application can implement each process implemented in the method embodiments of Figures 2 to 3 and achieve the same technical effect. To avoid repetition, it will not be described here.

As shown in Figure 7, it is a structural diagram of a data routing device 700 provided in an embodiment of the present application, and the device 700 includes: a transmission module 710, used to send first information to a terminal; wherein the first information is used to indicate at least one of the following: at least one transmission network corresponding to one or more data streams, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data streams.

In an optional implementation, the first information includes at least one of the following: data stream description information, used to describe characteristic information of the data stream; and transmission configuration of the data stream.

In an optional implementation, the transmission configuration of the data stream includes at least one of the following: first indication information, used to indicate the priority or tendency of at least one of the RAT types, or used to indicate the priority or tendency of at least one transmission network; the identification of the terminal; second indication information, used to indicate at least one of unloading, guiding, steering, transferring, diverting, and merging of the data stream; and parameters of the socket connection.

In an optional implementation, when the first information includes the second indication information, the first information also includes at least one of the following: a session parameter used to describe the session parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target session; a connection parameter used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target connection.

In an optional implementation, the session parameters or the connection parameters include at least one of the following: DNN; single network slice selection auxiliary information S-NSSAI; service continuity SSC mode; access point name APN list; RAT type.

In an optional implementation, the data flow description information includes at least one of the following: a data network name DNN;

Application descriptor APP descriptor; connection capability Connection Capability; IP descriptor IP descriptor; domain name descriptor Domain descriptor; non-IP descriptor Non-IP descriptor.

In an optional implementation manner, the transmission network is identified or indicated by network identification information.

In an optional implementation, the RAT type includes at least one of the following: wireless access technology, the wireless access technology including at least one of Long Term Evolution LTE, 4G, New Radio NR, 5G, Non-terrestrial Network NTN, and 6G; wired access technology.

In an optional implementation manner, sending the first information to the terminal includes at least one of the following: receiving a downlink non-access layer NAS message, the downlink NAS message including the first information; and sending the first information through a terminal configuration update process UCU.

In an optional implementation, the transmission module is also used to execute the step of sending the first information to the terminal when a predetermined condition is met; wherein the predetermined condition includes at least one of the following: the terminal is in a dual registration state; the terminal has a dual registration capability; the terminal supports a first capability, and the first capability includes at least one of a data stream selection capability, a RAT type determination capability, and a network identification information determination capability; and the terminal is a signed terminal.

In an optional implementation, the transmission module 710 is further used to: receive second information from a second network device;

The second information includes at least one of the following: the terminal is in a dual registration state; the terminal supports dual registration capability; the terminal supports the first capability; the terminal is a contracted terminal.

The data routing device 700 in the embodiment of the present application may be an electronic device, such as the type of network-side device 12 listed above, which is not specifically limited in the embodiment of the present application.

The data routing device 700 provided in the embodiment of the present application can implement each process implemented in the method embodiment of FIG. 5 and achieve the same technical effect. To avoid repetition, it will not be described again here.

As shown in FIG8 , the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802, wherein the memory 802 stores a program or instruction that can be run on the processor 801. For example, when the communication device 800 is a terminal, the program or instruction is executed by the processor 801 to implement the various steps of the above-mentioned data routing method embodiment, and can achieve the same technical effect. When the communication device 800 is a network side device, the program or instruction is executed by the processor 801 to implement the various steps of the above-mentioned data routing method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps in the method embodiment shown in Figure 2 or Figure 4. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, Figure 9 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

The terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909 and at least some of the components of a processor 910.

Those skilled in the art will appreciate that the terminal 900 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 910 through a power management system, so as to implement functions such as managing charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG9 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, and the graphics processor 9041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 907 includes a touch panel 9071 and at least one of other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 901 can transmit the data to the processor 910 for processing; in addition, the RF unit 901 can send uplink data to the network side device. Generally, the RF unit 901 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 909 can be used to store software programs or instructions and various data. The memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 909 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 910.

Among them, the radio frequency unit 901 is used to receive first information, and the first information is used to indicate the first information is used to indicate at least one of the following: at least one transmission network corresponding to one or more data streams, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data streams; the processor 910 is used to perform a first operation on the target data stream according to the first information, and the first operation includes at least one of the following: associating the target data stream with at least one RAT type or at least one transmission network; establishing a socket connection under at least one RAT type or at least one transmission network for the target data stream; establishing or using a session under at least one RAT type or at least one transmission network for the target data stream.

In an optional implementation, the first information includes at least one of the following: data stream description information, used to describe characteristic information of one or more of the data streams; and transmission configuration of one or more of the data streams.

In an optional implementation, the transmission configuration of the data stream includes at least one of the following: first indication information, used to indicate the priority or tendency of at least one of the RAT types, or used to indicate the priority or tendency of at least one transmission network; the identification of the terminal; second indication information, used to indicate at least one of unloading, guiding, steering, transferring, diverting, and merging of the data stream; and parameters of the socket connection.

In an optional implementation, when the first information includes the second indication information, the first information also includes at least one of the following: a session parameter used to describe the session parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target session; a connection parameter used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, diverted, or merged to the target connection.

In an optional implementation, the session parameter or the connection parameter includes at least one of the following: DNN;

Single network slice selection auxiliary information S-NSSAI; service continuity SSC mode; access point name APN list; RAT type.

In an optional implementation, the data flow description information includes at least one of the following: a data network name DNN;

Application descriptor APP descriptor; connection capability Connection Capability; IP descriptor IP descriptor; domain name descriptor Domain descriptor; non-IP descriptor Non-IP descriptor.

In an optional implementation manner, the transmission network is identified or indicated by network identification information.

In an optional implementation, the RAT type includes at least one of the following: wireless access technology, the wireless access technology including at least one of Long Term Evolution LTE, 4G, New Radio NR, 5G, Non-terrestrial Network NTN, and 6G; wired access technology.

It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of method embodiment 200 or 300, and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method embodiment shown in Figure 5. The network side device embodiment corresponds to the above-mentioned network side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the network side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in Figure 10, the network side device 1000 includes: an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004 and a memory 1005. The antenna 1001 is connected to the radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001 and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be sent and sends it to the radio frequency device 1002. The radio frequency device 1002 processes the received information and sends it out through the antenna 1001.

The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1003, which includes a baseband processor.

The baseband device 1003 may include, for example, at least one baseband board, on which a plurality of chips are arranged, as shown in FIG10 , wherein one of the chips is, for example, a baseband processor, which is connected to the memory 1005 through a bus interface to call a program in the memory 1005 and execute the network device operations shown in the above method embodiment.

The network side device may also include a network interface 1006, which is, for example, a Common Public Radio Interface (CPRI).

Specifically, the network side device 1000 of the embodiment of the present application also includes: instructions or programs stored in the memory 1005 and executable on the processor 1004. The processor 1004 calls the instructions or programs in the memory 1005 to execute the method executed by each module shown in Figure 7 and achieves the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned data routing method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned data routing method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The embodiment of the present application further provides a computer program/program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned data routing method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to implement the various processes of the above-mentioned data routing method embodiments 200-300, and the network side device can be used to implement the various processes of the above-mentioned data routing method embodiment 500 and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims (43)

A data routing method, comprising: The terminal receives first information, where the first information is used to indicate at least one of the following: At least one transmission network corresponding to one or more data flows, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data flows; The terminal performs a first operation on the target data stream according to the first information, where the first operation includes at least one of the following: Associating the target data flow with at least one RAT type or at least one transport network; Establishing a socket connection under at least one RAT type or at least one transport network for the target data flow; A session under at least one RAT type or at least one transport network is established or used for the target data flow. The method according to claim 1, wherein the first information includes at least one of the following: Data stream description information, used to describe characteristic information of one or more data streams; a transmission configuration for one or more of said data flows. The method of claim 2, wherein the transmission configuration of the data stream comprises at least one of the following: first indication information, used to indicate a priority or tendency of at least one of the RAT types, or used to indicate a priority or tendency of at least one transmission network; an identification of the terminal; The second indication information is used to instruct to perform at least one of unloading, guiding, redirecting, transferring, splitting, and merging of the data flow; The parameters of the socket connection. The method according to claim 3, wherein, when the first information includes the second indication information, the first information further includes at least one of the following: Session parameters, used to describe the session parameters of the data flow being offloaded, directed, diverted, transferred, split, or merged to the target session; The connection parameters are used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, split, or merged to the target connection. The method according to claim 4, wherein the session parameter or the connection parameter comprises at least one of the following: DNN; Single Network Slice Selection Assistance Information S-NSSAI; Business continuity SSC model; Access Point Name APN list; RAT type. The method according to claim 2, wherein the data flow description information includes at least one of the following: Data network name DNN; Application descriptor APP descriptor; Connection Capability IP descriptorIP descriptor; Domain descriptorDomain descriptor; Non-IP descriptorNon-IP descriptor. The method according to any one of claims 1 to 6, wherein the transmission network is identified or indicated by network identification information. The method according to any one of claims 1 to 6, wherein the RAT type includes at least one of the following: A wireless access technology, wherein the wireless access technology includes at least one of Long Term Evolution (LTE), 4G, New Radio (NR), 5G, Non-Terrestrial Network (NTN), and 6G; Wired access technology. The method according to any one of claims 1 to 6, wherein the terminal receives the first information, including at least one of the following: The terminal receives a downlink non-access stratum NAS message, where the downlink NAS message includes the first information; The terminal receives the first information through a terminal configuration update process UCU. A data routing method, comprising: The first network device sends first information to the terminal; The first information is used to indicate at least one of the following: At least one transmission network corresponding to one or more data flows, wherein one of the transmission networks supports at least one radio access technology RAT type; At least one RAT type corresponding to one or more of the data flows. The method of claim 10, wherein the first information includes at least one of the following: Data stream description information, used to describe characteristic information of one or more data streams; a transmission configuration for one or more of said data flows. The method of claim 11, wherein the transmission configuration of the data stream comprises at least one of the following: first indication information, used to indicate a priority or tendency of at least one of the RAT types, or used to indicate a priority or tendency of at least one transmission network; an identification of the terminal; The second indication information is used to instruct to perform at least one of unloading, guiding, redirecting, transferring, splitting, and merging of the data flow; Parameters for the socket connection. The method according to claim 12, wherein, when the first information includes the second indication information, the first information further includes at least one of the following: Session parameters, used to describe the session parameters of the data flow being offloaded, directed, diverted, transferred, split, or merged to the target session; The connection parameters are used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, split, or merged to the target connection. The method of claim 13, wherein the session parameter or the connection parameter comprises at least one of the following: DNN; Single Network Slice Selection Assistance Information S-NSSAI; Business continuity SSC model; Access Point Name APN list; RAT type. The method according to claim 11, wherein the data flow description information includes at least one of the following: Data network name DNN; Application descriptor APP descriptor; Connection Capability IP descriptorIP descriptor; Domain descriptorDomain descriptor; Non-IP descriptorNon-IP descriptor. The method according to any one of claims 10 to 15, wherein the transmission network is identified or indicated by network identification information. The method according to any one of claims 10 to 15, wherein the RAT type includes at least one of the following: A wireless access technology, wherein the wireless access technology includes at least one of Long Term Evolution (LTE), 4G, New Radio (NR), 5G, Non-Terrestrial Network (NTN), and 6G; Wired access technology. The method according to any one of claims 10 to 15, wherein the first network device sends the first information to the terminal, including at least one of the following: The first network device sends a downlink non-access layer NAS message to the terminal, where the downlink NAS message includes the first information; The first network device sends the first information through a terminal configuration update process UCU. The method according to any one of claims 10 to 18, wherein the method further comprises: When a predetermined condition is met, executing the step of sending the first information to the terminal; The predetermined condition includes at least one of the following: The terminal is in a dual registration state; The terminal has a dual registration capability; The terminal supports a first capability, where the first capability includes at least one of a data stream selection capability, a RAT type determination capability, and a network identification information determination capability; The terminal is a contract terminal. The method of claim 19, wherein the method further comprises receiving second information from a second network device; The second information includes at least one of the following: The terminal is in a dual registration state; The terminal supports dual registration capability; The terminal supports a first capability; The terminal is a contract terminal. A data routing device, comprising: The transmission module is configured to receive first information, where the first information is used to indicate at least one of the following: At least one transmission network corresponding to one or more data flows, wherein one of the transmission networks supports at least one radio access technology RAT type; at least one RAT type corresponding to one or more of the data flows; an execution module, configured to perform a first operation on the target data stream according to the first information, wherein the first operation includes at least one of the following: Associating the target data flow with at least one RAT type or at least one transport network; Establishing a socket connection under at least one RAT type or at least one transport network for the target data flow; A session under at least one RAT type or at least one transport network is established or used for the target data flow. The apparatus of claim 21, wherein the first information comprises at least one of the following: Data stream description information, used to describe characteristic information of one or more data streams; a transmission configuration for one or more of said data flows. The apparatus of claim 22, wherein the transmission configuration of the data stream comprises at least one of the following: first indication information, used to indicate a priority or tendency of at least one of the RAT types, or used to indicate a priority or tendency of at least one transmission network; an identification of the terminal; The second indication information is used to instruct to perform at least one of unloading, guiding, redirecting, transferring, splitting, and merging of the data flow; The parameters of the socket connection. The apparatus according to claim 23, wherein, when the first information includes the second indication information, the first information further includes at least one of the following: Session parameters, used to describe the session parameters of the data flow being offloaded, directed, diverted, transferred, split, or merged to the target session; The connection parameters are used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, split, or merged to the target connection. The apparatus of claim 24, wherein the session parameter or the connection parameter comprises at least one of the following: DNN; Single Network Slice Selection Assistance Information S-NSSAI; Business continuity SSC model; Access Point Name APN list; RAT type. The apparatus according to claim 22, wherein the data flow description information comprises at least one of the following: Data network name DNN; Application descriptor APP descriptor; Connection Capability IP descriptorIP descriptor; Domain descriptorDomain descriptor; Non-IP descriptorNon-IP descriptor. The apparatus according to any one of claims 11 to 26, wherein the transmission network is identified or indicated by network identification information. The apparatus according to any one of claims 21 to 26, wherein the RAT type includes at least one of the following: A wireless access technology, wherein the wireless access technology includes at least one of Long Term Evolution (LTE), 4G, New Radio (NR), 5G, Non-Terrestrial Network (NTN), and 6G; Wired access technology. The apparatus according to any one of claims 21 to 26, wherein the receiving the first information comprises at least one of the following: receiving a downlink non-access stratum NAS message, where the downlink NAS message includes the first information; The first information is received through the terminal configuration update process UCU. A data routing device, comprising: A transmission module, used for sending first information to a terminal; The first information is used to indicate at least one of the following: At least one transmission network corresponding to one or more data flows, wherein one of the transmission networks supports at least one radio access technology RAT type; At least one RAT type corresponding to one or more of the data flows. The apparatus of claim 30, wherein the first information comprises at least one of the following: Data stream description information, used to describe characteristic information of one or more data streams; a transmission configuration for one or more of said data flows. The apparatus of claim 31, wherein the transmission configuration of the data stream comprises at least one of the following: first indication information, used to indicate a priority or tendency of at least one of the RAT types, or used to indicate a priority or tendency of at least one transmission network; an identification of the terminal; The second indication information is used to instruct to perform at least one of unloading, guiding, redirecting, transferring, splitting, and merging of the data flow; Parameters for the socket connection. The apparatus according to claim 32, wherein, when the first information includes the second indication information, the first information further includes at least one of the following: Session parameters, used to describe the session parameters of the data flow being offloaded, directed, diverted, transferred, split, or merged to the target session; The connection parameters are used to describe the connection parameters of the data flow being unloaded, directed, diverted, transferred, split, or merged to the target connection. The apparatus of claim 33, wherein the session parameter or the connection parameter comprises at least one of the following: DNN; Single Network Slice Selection Assistance Information S-NSSAI; Business continuity SSC model; Access Point Name APN list; RAT type. The apparatus according to claim 31, wherein the data flow description information comprises at least one of the following: Data network name DNN; Application descriptor APP descriptor; Connection Capability IP descriptorIP descriptor; Domain descriptorDomain descriptor; Non-IP descriptorNon-IP descriptor. The apparatus as claimed in any one of claims 30 to 35, wherein the transmission network is identified or indicated by network identification information. The apparatus according to any one of claims 30 to 35, wherein the RAT type comprises at least one of the following: A wireless access technology, wherein the wireless access technology includes at least one of Long Term Evolution (LTE), 4G, New Radio (NR), 5G, Non-Terrestrial Network (NTN), and 6G; Wired access technology. The apparatus according to any one of claims 30 to 35, wherein the sending the first information to the terminal comprises at least one of the following: Sending a downlink non-access stratum NAS message to the terminal, where the downlink NAS message includes the first information; The first information is sent through the terminal configuration update process UCU. The device according to any one of claims 30 to 38, wherein the transmission module is further configured to execute the step of sending the first information to the terminal when a predetermined condition is met; The predetermined condition includes at least one of the following: The terminal is in a dual registration state; The terminal has a dual registration capability; The terminal supports a first capability, where the first capability includes at least one of a data stream selection capability, a RAT type determination capability, and a network identification information determination capability; The terminal is a contract terminal. The apparatus of claim 39, wherein the transmission module is further configured to: receive second information from a second network device; The second information includes at least one of the following: The terminal is in a dual registration state; The terminal supports dual registration capability; The terminal supports a first capability; The terminal is a contract terminal. A terminal comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 9 are implemented. A network side device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method according to any one of claims 10 to 20 are implemented. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the method according to any one of claims 1 to 9, or implements the steps of the method according to any one of claims 10 to 20.