CN111479292A - Method and device for data transmission - Google Patents

Abstract

The present application provides a method and apparatus for data transmission. The access network device receives the target data, and selects a target transmission node device from the at least two transmission node devices for the target data according to the selection policy, wherein each transmission node device in the at least two transmission node devices is connected to the connection. The network access device has a data channel, so that the access network device can directly send the target data to the data network through the selected target transmission node device. Compared with the traditional solution, the target data can only use a fixed transmission node device for data transmission. Congestion, the embodiment of the present application can flexibly select a transmission node device, thereby improving communication efficiency.

Description

Method and device for data transmission

technical field

The present application relates to the field of communications, and more particularly, to a method and apparatus for data transmission.

Background technique

Under the traditional data transmission architecture, the data of the terminal device communicates with the data network (data network, DN) through the base station and a fixed user plane function (userplane function, UPF). Specifically, after the terminal equipment accesses the base station, the session management function (SMF) will select a fixed UPF for the terminal equipment, and the network equipment establishes a fixed channel of terminal equipment-base station-UPF-DN for the terminal equipment, wherein The channel between the base station and the UPF may be a general packet radio service tunneling protocol (GTP) channel.

Wherein, a base station may establish a GTP channel with a UPF, or a plurality of base stations may establish a GTP channel with the same UPF respectively. Especially in the case where multiple base stations establish a GTP channel with the same UPF, since the terminal equipment can only transmit data through a fixed UPF, when the service of the UPF is congested, the data of the terminal equipment under the UPF will be affected. This makes data transmission less efficient.

SUMMARY OF THE INVENTION

The present application provides a method and apparatus for data transmission, which can improve the efficiency of data transmission.

In a first aspect, a method for data transmission is provided, the method comprising:

The access network device receives target data from the terminal device;

The access network device determines a target transmission node device according to a selection strategy, where the selection strategy is used to select a transmission node device for sending the target data from at least two transmission node devices, and the at least two transmission node devices are connected to the connection node. The network access device has a data channel;

The access network device sends the target data to the target transmission node device.

The access network device receives the target data, and selects a target transmission node device from the at least two transmission node devices for the target data according to the selection policy, wherein each transmission node device in the at least two transmission node devices is connected to the connection. The network access device has a data channel, so that the access network device can directly send the target data to the data network through the selected target transmission node device. Compared with the traditional solution, the target data can only use fixed transmission node devices for data transmission, resulting in data congestion. , the embodiment of the present application can flexibly select a transmission node device, thereby improving communication efficiency.

In some possible implementation manners, the access network device determines the target transmission node device according to the selection policy, including:

The access network device determines the target transmission node device according to the selection strategy and the target data.

The access network device can determine the requirements of the target data, such as delay requirements, power consumption requirements, etc., so that the access network device selects the appropriate target transmission node device for the target data according to the requirements of the target data and the selection strategy, so as to further Improve data transmission efficiency.

In some possible implementations, the method further includes:

The access network device receives the selection policy sent by the core network device.

The selection policy may be actively sent by the core network device to the access network device, or may be sent by the core network device to the access network device when requested by the access network device.

In some possible implementations, the method further includes:

The access network device sends a request message to the core network device, where the request message carries capability information of the access network device, where the capability information is used to indicate the maximum number of connected transport node devices supported by the access network device;

Wherein, the selection strategy for the access network device to receive sent by the core network device includes:

The access network device receives a response message to the request message from the core network device, where the response message carries the selection policy.

The core network device receives a request message sent by the access network device, where the request message carries indication information of the access network device, where the indication information is used to indicate the maximum number of connected transport node devices supported by the access network device, or , the indication information is used to indicate that the access network device supports capability information for connecting at least two transmission node devices. The core network device sends a response message to the request message to the access network device, where the response message carries the selection policy.

In some possible implementations, the selection strategy may include load states of the at least two transport node devices.

The transport node device may indicate the current load status of each transport node device in the at least two transport node devices, or the current capacity of the transport node device that can still handle the load.

In some possible implementations, the method further includes:

The access network device receives indication information, where the indication information is used to indicate that a set of transmission node devices exists in the communication system, and the set of transmission node devices includes the at least two transmission node devices.

The AMF may send first indication information to the access network device, where the first indication information is used to indicate that there is a set of transmission node devices, and the set of transmission node devices includes the at least two transmission node devices. The AMF may receive a request message carrying the second indication information of the access network device, the AMF sends the second indication information to the SMF, and the SMF determines the selection strategy according to the second indication information of the access network device, and sends the request message to the access network device through the AMF. The network access device sends a response message carrying the selection policy.

In some possible implementations, the method further includes:

The access network device establishes a data channel with the at least two transmission node devices.

The access network device may establish data channels with the at least two transmission node devices at one time and then perform data transmission multiple times, or may need to establish data channels with the at least two transmission node devices in advance for each data transmission.

In some possible implementations, the data channel includes at least one of a general packet radio service tunneling protocol channel, an internet protocol channel, or an ether channel.

In a second aspect, a data transmission method is provided, the method comprising: a first transmission node device receiving target data from an access network device, the first transmission node device having a data channel with the at least one second transmission node device;

The first transmission node device determines a target transmission node device according to a selection strategy, and the selection strategy is used to select a transmission node device for sending the target data from at least one second transmission node device;

The first transport node device sends the target data to the target transport node device.

The first transmission node device receives target data from the access network device, and selects a suitable target transmission node device for the target data from at least two transmission node devices according to a selection policy, wherein the first transmission node device and the at least two Other transmission node devices in the transmission node device except the first transmission node device have data channels, so that the first transmission node device can send the target data to the DN through the target transmission node device, thereby avoiding data transmission through a fixed transmission node. The congestion caused by the node device sending the target data to the DN, that is, the embodiment of the present application improves the communication efficiency.

In some possible implementations, the first transit node device determining the target transit node device according to the selection policy includes:

The first transfer node determines the target transfer node device according to the selection policy and the target data.

The access network device can determine the requirements of the target data, such as delay requirements, power consumption requirements, etc., so that the access network device selects the appropriate target transmission node device for the target data according to the requirements of the target data and the selection strategy, so as to further Improve data transmission efficiency.

In some possible implementations, the method further includes:

The first transport node device receives the selection policy from the core network device.

The core network device may actively send the selection policy to the access network device, or may be sent by the core network device to the access network device when requested by the access network device.

In some possible implementations, the method further includes:

The first transport node device establishes a data channel with each of the at least two transport node devices except the first transport node device.

The first transmission node device may establish a data channel in advance with each of the at least two transmission node devices except the first transmission node device, thereby saving data transmission delay.

In some possible implementations, the selection strategy may include load states of the at least two transport node devices.

The transport node device may indicate the current load status of each transport node device in the at least two transport node devices, or the current capacity of the transport node device that can still handle the load.

In a third aspect, an apparatus for processing system messages is provided, and the apparatus may be a terminal or a chip in the terminal. The device has the function of implementing the above-mentioned first aspect and any possible implementation manners thereof. This function can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the apparatus includes: a processing module and a transceiver module, for example, the transceiver module may be at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna. The processing module may be a processor.

Optionally, the apparatus further includes a storage module, which may be, for example, a memory. When included, the memory module is used to store the instructions. The processing module is connected to the storage module, and the processing module can execute instructions stored in the storage module or other instructions, so that the apparatus executes the method of the first aspect and any possible implementations thereof.

In another possible design, when the device is a chip, the chip includes: a processing module, optionally, the chip further includes a transceiver module, and the transceiver module can be, for example, an input/output interface, pins on the chip or circuit etc. The processing module may be, for example, a processor. The processing module can execute the instructions, so that the chip in the terminal executes the method of the above-mentioned first aspect and any possible implementation manners thereof.

Optionally, the processing module may execute instructions in a storage module, and the storage module may be an in-chip storage module, such as a register, a cache, and the like. The memory module can also be located in the communication device but outside the chip, such as read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) memory, RAM), etc.

Wherein, the processor mentioned in any of the above may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more of the above An integrated circuit on which a program of the methods of various aspects executes.

In a fourth aspect, an apparatus for processing system messages is provided, and the apparatus may be a network device or a chip in the network device. The device has the function of realizing the above-mentioned second aspect and various possible implementation manners. This function can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the apparatus includes: a transceiver module and a processing module, the transceiver module may be, for example, at least one of a transceiver, a receiver, and a transmitter, and the transceiver module may include a radio frequency circuit or an antenna. The processing module may be a processor.

Optionally, the apparatus further includes a storage module, which may be, for example, a memory. When included, the memory module is used to store the instructions. The processing module is connected with the storage module, and the processing module can execute instructions stored in the storage module or other instructions, so that the apparatus executes the method of the second aspect and various possible implementations. In this design, the device can be a network device.

In another possible design, when the device is a chip, the chip includes: a transceiver module and a processing module, and the transceiver module may be, for example, an input/output interface, pins, or circuits on the chip. The processing module may be, for example, a processor. The processing module can execute the instructions, so that the chip in the terminal executes the method of the second aspect and various possible implementations.

Optionally, the processing module may execute instructions in a storage module, and the storage module may be an in-chip storage module, such as a register, a cache, and the like. The storage module may also be located within the communication device but outside the chip, such as read-only memory or other types of static storage devices that can store static information and instructions, random access memory, and the like.

Wherein, the processor mentioned in any one of the above may be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit, or one or more integrated circuits used to control the execution of the programs of the above-mentioned methods.

In a fifth aspect, a computer storage medium is provided, and program codes are stored in the computer storage medium, and the program codes are used to instruct instructions for executing the method in the first aspect or any possible implementation manners thereof.

In a sixth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any possible implementations thereof.

In a seventh aspect, a computer storage medium is provided, and program codes are stored in the computer storage medium, and the program codes are used to instruct instructions for executing the method in the second aspect or any possible implementation manners thereof.

In an eighth aspect, there is provided a computer program product comprising instructions, which, when run on a computer, cause the computer to perform the method of the second aspect or any possible implementations thereof.

In a ninth aspect, a processor is provided, coupled with a memory, for executing the method in the first aspect or any possible implementations thereof.

In a tenth aspect, there is provided a processor, coupled to a memory, for executing the method in the second aspect or any possible implementations thereof.

In an eleventh aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is used to communicate with an external device or an internal device, and the processor is used to implement the above-mentioned first aspect or any possible implementation manner thereof Methods.

Optionally, the chip may further include a memory in which instructions are stored, and the processor is configured to execute the instructions stored in the memory or derived from other instructions. When the instructions are executed, the processor is configured to implement the method of the first aspect or any possible implementations thereof.

Optionally, the chip can be integrated on the access network device.

A twelfth aspect provides a chip, where the chip includes a processor and a communication interface, where the communication interface is used to communicate with an external device or an internal device, and the processor is used to implement the second aspect or any possible implementation manner thereof Methods.

Optionally, the chip may further include a memory in which instructions are stored, and the processor is configured to execute the instructions stored in the memory or derived from other instructions. When the instructions are executed, the processor is configured to implement the method of the second aspect above or any possible implementation thereof.

Optionally, the chip can be integrated on core network equipment.

Based on the above technical solution, the access network device receives the target data, and selects a target transfer node device from at least two transfer node devices for the target data according to the selection policy, wherein each of the at least two transfer node devices transmits The node device and the access network device have a data channel, so that the access network device can directly send the target data to the data network through the selected target transmission node device. Compared with the traditional solution, the target data can only be processed by a fixed transmission node device. Data transmission causes data congestion, and the embodiment of the present application can flexibly select a transmission node device, thereby improving communication efficiency.

Description of drawings

Fig. 1 is the schematic diagram of a communication system of the present application;

Fig. 2 is the schematic diagram of data transmission in the traditional scheme;

3 is a schematic flowchart of a method for data transmission according to an embodiment of the present application;

4 is a schematic diagram of a method for data transmission according to a specific embodiment of the present application;

FIG. 5 is a schematic flowchart of a data transmission method according to another embodiment of the present application;

6 is a schematic diagram of a data transmission method according to another specific embodiment of the present application;

7 is a schematic block diagram of an apparatus for data transmission processing according to an embodiment of the present application;

8 is a schematic block diagram of an apparatus for data transmission processing provided by an embodiment of the present application;

9 is a schematic block diagram of an apparatus for data transmission processing according to an embodiment of the present application;

10 is a schematic block diagram of an apparatus for data transmission processing according to an embodiment of the present application;

FIG. 11 shows a schematic block diagram of an apparatus for data transmission processing according to a specific embodiment of the application;

FIG. 12 shows a schematic block diagram of an apparatus for data transmission processing according to another specific embodiment of the application.

Detailed ways

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

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a global system for mobile communications (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (wideband) system code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, future fifth generation (5th generation, 5G) system or new Wireless (new radio, NR) and so on.

As an example and not a limitation, in the embodiments of the present application, the terminal equipment in the embodiments of the present application may refer to user equipment (user equipment, UE), access terminal equipment, subscriber units, subscriber stations, mobile stations, mobile stations, remote station, remote terminal equipment, mobile equipment, user terminal equipment, terminal equipment, wireless communication equipment, user agent or user equipment. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication function handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or terminals in future evolved public land mobile networks (PLMN) equipment, etc., which are not limited in the embodiments of the present application, and are not distinguished in the following embodiments.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in an internet of things (Internet of things, IoT) system. IoT is an important part of the future development of information technology, and its main technical feature is that items are passed through communication technology. Connect with the network, so as to realize the intelligent network of human-machine interconnection and interconnection of things.

In the embodiment of the present application, the IOT technology can achieve massive connections, deep coverage, and power saving of terminal devices through, for example, a narrow band (narrow band) NB technology. For example, the NB only includes one resource block (RB), that is, the bandwidth of the NB is only 180KB. To achieve massive access, the terminal equipment must be discrete in access. According to the method of the embodiment of the present application, the congestion problem of the massive terminal equipment of the IOT technology when accessing the network through the NB can be effectively solved.

In addition, in this application, the terminal equipment may also include sensors such as smart printers, train detectors, gas stations, etc. The main functions include collecting data (part of terminal equipment), receiving control information and downlink data of access network equipment, and sending electromagnetic waves. , and transmit uplink data to the access network equipment.

The access network device in this embodiment of the present application may be a device for communicating with a terminal device, and the access network device may be a global system for mobile communications (GSM) system or a code division multiple access (code division multiple access) system. Access, CDMA) in the base station (base transceiver station, BTS), also can be the base station (NodeB, NB) in the wideband code division multiple access (wideband code division multiple access, WCDMA) system, can also be the evolution in the LTE system A base station (evolved NodeB, eNB or eNodeB), or a wireless controller in a cloud radio access network (CRAN) scenario, or the access network device may be a relay station, an access point (access point) , AP), wifi signal source equipment, in-vehicle equipment, wearable equipment and access network equipment in the future 5G network or access network equipment in the future evolved PLMN network, etc., can be an access point in WLAN, can be The gNB in a new radio system (new radio, NR) system is not limited in this embodiment of the present application.

In addition, in this embodiment of the present application, an access network device provides services for a cell, and a terminal device communicates with the access network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell It can be a cell corresponding to an access network device (such as a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cell here can include: a metro cell, a micro cell ( micro cell), pico cell (pico cell), femto cell (femto cell), etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.

In addition, a carrier in an LTE system or a 5G system can have multiple cells working on the same frequency at the same time. In some special scenarios, the concepts of the above-mentioned carrier and cell can also be considered equivalent. For example, in a carrier aggregation (CA) scenario, when a secondary carrier is configured for a UE, the carrier index of the secondary carrier and the cell identification (Cell ID) of the secondary cell operating on the secondary carrier are carried at the same time. In this case, it can be considered that the concepts of the carrier and the cell are equivalent, for example, the UE accessing a carrier is equivalent to accessing a cell.

The core network device may be connected to a plurality of access network devices for controlling the access network devices, and may distribute data received from the network side (eg, the Internet) to the access network devices.

In addition, in this application, access network equipment may include base stations (gNBs), such as macro base stations, micro base stations, indoor hotspots, and relay nodes, etc., the function is to send radio waves to terminal equipment, and on the one hand realize downlink data transmission, On the other hand, it sends scheduling information to control uplink transmission, and receives radio waves sent by terminal equipment to receive uplink data transmission.

The functions and specific implementation manners of the terminal equipment, the access network equipment, and the core network equipment listed above are only exemplary descriptions, and the present application is not limited thereto.

In this embodiment of the present application, the terminal device or the access network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program that records the codes of the methods provided by the embodiments of the present application can be executed to provide the methods provided by the embodiments of the present application. For example, the execution subject of the method provided by the embodiment of the present application may be a terminal device or an access network device, or a functional module in the terminal device or access network device that can call and execute a program.

Additionally, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer readable device, carrier or medium. For example, computer readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, stick or key drives, etc.).

Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

It should be noted that, in this embodiment of the present application, multiple application programs may be run at the application layer. In this case, the application program that executes the method of this embodiment of the present application is the same as the application program used to control the receiving end device to complete the received data processing. The application of the corresponding action may be a different application.

It is understandable that the standard names in the embodiments of the present application are all functional descriptions, and the names are not limited, but only represent the functions of the device.

FIG. 1 is a schematic diagram of a communication system of the present application, taking a 5G communication system as an example. The communication system in FIG. 1 may include an access and mobility management function (AMF), SMF, DN, UPF, radio access network (RAN), and UE. SMF is used for session management and AMF is used for access and mobility management. For example, AMF, SMF, DN, and UPF are functional descriptions of core network devices, and base stations are functional descriptions of access network devices.

Under the traditional data transmission architecture, the data of the terminal equipment communicates with the DN through the base station and the fixed UPF. Specifically, after the terminal device accesses the base station, the SMF will select a fixed UPF for the terminal device, and establish a fixed channel of terminal device-base station-UPF-DN, where the channel between the base station and the UPF can be a GTP channel. Specifically, the fixed UPF corresponds to a certain PDU session of the terminal device, and correspondingly, the above-mentioned fixed channel corresponds to a fixed channel of a certain PDU session of the terminal device.

Wherein, a base station may establish a GTP channel with a UPF, or a plurality of base stations may establish a GTP channel with the same UPF respectively. Especially when multiple base stations establish a GTP channel with the same UPF, since the UE can only transmit data through a fixed UPF (for example, as shown in Figure 2, UE-1 can only send the corresponding PDU session to the DN through UPF1). data), when the service of the UPF is congested, the data of the terminal device under the UPF will be affected, so that the efficiency of data transmission is low.

FIG. 3 shows a schematic flowchart of a data transmission method according to an embodiment of the present application.

Optionally, 301, an access network device receives target data from a terminal device. Correspondingly, the terminal device sends the target data to the access network device.

Specifically, the target data received by the access network device from the terminal device may be data for the terminal device, where the target data may be service data corresponding to a protocol data unit (protocol data unit, PDU) session.

As an implementation manner, the target data in this embodiment may refer to service data corresponding to a PDU session.

302. The access network device determines a target transmission node device according to a selection strategy, where the selection strategy is used to select a transmission node device for sending the target data from at least two transmission node devices, the at least two transmission node devices being the same as the transmission node device. The access network equipment has a data channel.

As an implementation manner, at least two transmission node devices in this embodiment may be used to send service data corresponding to the same PDU session. The at least two transmission node devices and the access network device have data channels corresponding to the same PDU session.

Specifically, the access network device has a data channel with at least two transmission node devices respectively, and each time the access network device performs data transmission, it can select a target transmission node device according to a selection policy.

It should be noted that the target transmission node device selected by the access network device for different terminal devices may be different, and the target transmission node device selected for different data of the same terminal device may also be different, which is not limited in this application.

It should be understood that the data channel between the at least two transmission node devices and the access network device may be for the same terminal device, may be for the same PDU session service of the same terminal device, or may be for the internal access network device. of the same type of data (for example, the same service) of at least one terminal device. In other words, the data channel between the at least two transmission node devices and the access network device can transmit different types of data of the same terminal device, can also transmit the same type of data of the same terminal device, or can transmit data belonging to different terminal devices The data of the same type, that is, the data channel may be dedicated to the terminal device, or dedicated to the same PDU session service of the terminal device, or shared by the terminal devices with the same type of data.

It should also be understood that the terminal device may select the target transmission node device and the access network device from the at least two transmission node devices to send uplink data to the access network device. The access network device may also use the target transmission node device to send data to the terminal device. Alternatively, downlink data may also be sent through other transmission node devices in the at least two transmission node devices, which is not limited in this application.

Optionally, the selection policy may indicate the load status of the transmission node device.

Specifically, the transmission node device may indicate the current load status of each transmission node device in the at least two transmission node devices, or the current capability of handling the load.

Optionally, step 302 may specifically be that the access network device determines the target transmission node device according to the selection policy and the target data.

Specifically, the access network device can determine the requirements of the target data, such as delay requirements, power consumption requirements, etc., so that the access network device selects a suitable target transmission node device for the target data according to the requirements of the target data and the selection strategy, Thereby, the data transmission efficiency is further improved.

Optionally, the transmission node device may be a UPF, that is, a data channel may be established between the UPF and the access network device.

Optionally, the data channel may be at least one of a GTP channel, an internet protocol (IP) channel, or an Ethernet channel.

Optionally, before step 302, the access network device may acquire the selection policy from the core network device. Correspondingly, the core network device sends the selection policy.

Specifically, the selection policy may be actively sent by the core network device to the access network device, or may be sent by the core network device to the access network device when requested by the access network device.

Optionally, the core network device receives a request message sent by the access network device, where the request message carries indication information of the access network device, where the indication information is used to indicate the access network device supports and can connect to the transmission node device. The maximum number, or the indication information is used to indicate that the access network device supports the capability information of connecting at least two transmission node devices. The core network device sends a response message to the request message to the access network device, where the response message carries the selection policy. Optionally, before the access network device sends the request message to the core network device, it may receive first indication information sent by the core network device, where the first indication information indicates that a set of transmission node devices exists, and the set of transmission node devices includes the at least two A transport node device.

As a specific implementation manner, the AMF may send first indication information to the access network device, where the first indication information is used to indicate that there is a set of transmission node devices, and the set of transmission node devices includes the at least two transmission node devices. The AMF may receive a request message carrying the second indication information of the access network device, the AMF sends the second indication information to the SMF, and the SMF determines the selection strategy according to the second indication information of the access network device, and sends the request message to the access network device through the AMF. The network access device sends a response message carrying the selection policy. Optionally, the SMF determines at least two transmission node devices for the access network device according to the second indication information of the access network device, and sends a response message to the access network device through the AMF carrying the address information of the at least two transmission node devices. , used for establishing a data channel between the access network device and the at least two transmission node devices. As an implementation manner, the request information may indicate capability information that the access network device supports connecting at least two transmission node devices through at least one-bit second indication information.

After the access network device receives the target data sent by the terminal device, the access network device executes step 302, so that the AMF can flexibly instruct the access network device to perform data transmission according to the embodiment of the present application, instead of using a fixed transmission node according to the traditional solution The device sends data to the DN, which improves the flexibility of data transmission.

It should be understood that in the case where the transport node device is a UPF, the set of transport node devices may be referred to as a "UPF pool".

Optionally, before step 302, the access network device may further establish a data channel with the at least two transfer node devices. For example, as shown in FIG. 4, gNB1 and UPF1 establish a data channel, and gNB1 and UPF2 establish a data channel.

Specifically, the access network device may establish a data channel with the at least two transmission node devices at one time, and then perform data transmission multiple times, or it may be necessary to establish data with the at least two transmission node devices in advance for each data transmission. aisle.

It should be noted that, in the case where each data transmission access network device needs to establish data channels with at least two transmission node devices in advance, the number of transmission node devices that establish data channels in advance with the access network device can be The same may also be different, which is not limited in this application.

It should be understood that the establishment of the data channel by the access network device may be established according to the instruction of the SMF.

303. The access network device sends the target data to the target transmission node device.

Specifically, the access network device receives the target data, and selects a target transfer node device from at least two transfer node devices for the target data according to the selection policy, wherein each transfer node device in the at least two transfer node devices Have a data channel with the access network equipment. As an implementation sending, the data channel owned by each of the at least two transmission node devices and the access network device corresponds to the same PDU session service of the terminal device. In this way, the access network device can directly send the target data to the DN through the selected target transmission node device. Compared with the traditional solution, the target data can only be transmitted by a fixed transmission node device, which causes data congestion. The embodiment of the present application can flexibly choose transmission node equipment, thereby improving communication efficiency.

FIG. 5 shows a schematic flowchart of a data transmission method according to another embodiment of the present application.

It should be noted that, unless otherwise specified, the embodiments of the present application have the same meanings as those of the same terms in the embodiments shown in FIG. 3 and FIG. 4 , which are not repeated in the present application to avoid repetition.

The embodiments of the present application are applied to a communication system including at least two transmission node devices, an access network device, a terminal device, and a DN.

Optionally, 501, a first transmission node device among the at least two transmission node devices receives target data from an access network device, and the first transmission node device and the at least two transmission node devices are excluding the first transmission node. Each transport node device other than the device has a data channel.

Specifically, there is a data channel between the access network device and the first transfer node device, the at least two transfer node devices may form a transfer node device pool, and the first transfer node device may be associated with the transfer node device pool. Other transport node devices have data channels.

It should be noted that each of the at least two transit node devices can communicate with the DN.

It should be understood that the core network device may instruct the access network device to preferentially establish a data channel with the first transmission node device.

Optionally, in the case that the transit node device is a UPF, the first transit node device may be a node (concentration & distribution function, CDF) with a concentration and distribution function.

Optionally, before step 501, the first transport node device may establish a data channel in advance with each of the at least two transport node devices except the first transport node device.

For example, as shown in FIG. 6 , the first transmission node device is a CDF, the CDF establishes a data channel with UPF1, and the CDF establishes a data channel with UPF2.

502. The first transmission node device determines a target transmission node device according to a selection strategy, where the selection strategy is used to select a transmission node device for sending the target data from the at least two transmission node devices.

Specifically, the first transmission node device selects a target transmission node device from the at least two transmission node devices for the target data according to the selection policy. As an implementation manner, the target data may be transmission data corresponding to the same PDU session service of the same terminal device.

It should be noted that, the target transfer node device selected by the first transfer node device may also be the first transfer node itself.

Optionally, step 502 may specifically be determining the target transmission node device according to the selection policy and target data.

Specifically, the first transmission node device can determine the requirements of the target data, such as delay requirements, power consumption requirements, etc., so that the first transmission node device selects a suitable target transmission node for the target data according to the requirements of the target data and the selection strategy equipment, thereby further improving the efficiency of data transmission.

Optionally, before step 502, the first transit node device may acquire the selection policy from the core network device. Correspondingly, the core network device sends the selection policy.

Specifically, the core network device may actively send the selection strategy to the first transmission node device, or the core network device may send the selection strategy to the first transmission node device when requested by the access network device.

Optionally, the core network device receives a first message sent by the access network device, where the first message carries indication information of the access network device, where the indication information is used to indicate that the access network device supports the maximum number of transmission node device pools , or, the indication information is used to indicate that the access network device supports the capability information of the transmission node device pool. The core network device sends a second message to the first transmission node device, where the second message carries the selection policy. Optionally, before sending the first message to the core network device, the access network device may receive first indication information sent by the core network device, where the first indication information indicates that there is a transmission node device pool, and the first indication information in the transmission node device pool exists. A transport node device has data channels with other transport node devices in the transport node device pool.

It should be understood that the first message may be a request message, and the second message is a response message to the request message.

As a specific implementation manner, the AMF may send first indication information to the access network device, where the first indication information is used to indicate that there is a transfer node device pool and to indicate the CD UPF (that is, the first transfer node device pool) in the transfer node device pool. node device). The AMF may receive the first message carrying the second indication information of the access network device, the AMF sends the second indication information to the SMF, and the SMF determines the selection strategy according to the second indication information of the access network device, and sends the first message to the first message. The transport node device sends the selection policy. Optionally, the SMF determines the first transit node device in the transit node device pool for the access network device according to the second indication information of the access network device, and sends the addresses of the at least two transit node devices to the first transit node device. The information is used for establishing a data channel between the first transmission node device and the at least two transmission node devices. As an implementation manner, the request information may indicate capability information of the access network device supporting the transmission node device pool through at least one-bit second indication information. Optionally, the SMF may directly send the selection policy and/or the address information of the at least two transfer node devices to the first transfer node device; or the SMF may send the selection policy to the first transfer node device through the AMF, for example, the SMF may send the selection policy to the first transfer node device. The selection policy and/or the address information of the at least two transfer node devices are sent to the AMF, and the AMF sends the selection policy and/or the address information of the at least two transfer node devices to the first transfer node device.

503. The first transport node device sends target data to the target transport node device.

Specifically, the first transmission node device receives the target data from the access network device, and selects an appropriate target transmission node device for the target data from at least two transmission node devices according to a selection policy, wherein the first transmission node device and the Other transfer node devices except the first transfer node device in the at least two transfer node devices have data channels, so that the first transfer node device can send the target data to the DN through the target transfer node device, thereby preventing data from passing through. The congestion caused by the fixed transmission node device sending the target data to the DN, that is to say, the embodiment of the present application improves the communication efficiency.

It should be noted that, if the target transmission node device selected by the first transmission node device is the first transmission node device, the first transmission node device may directly send the target data to the DN.

The data transmission method according to the embodiment of the present application is described in detail above, and the data transmission apparatus of the embodiment of the present application will be described below.

FIG. 7 shows a schematic block diagram of an apparatus 700 for data transmission according to an embodiment of the present application.

It should be understood that the apparatus 700 may correspond to the terminal device in the embodiment shown in FIG. 3 , and may have any function of the terminal device in the method. The apparatus 700 includes a transceiver module 710 and a processing module 720 .

a transceiver module 710, configured to receive target data from a terminal device;

The processing module 720 is configured to determine a target transmission node device according to a selection strategy, the selection strategy is used to select a transmission node device for sending the target data from at least two transmission node devices, the at least two transmission node devices and the transmission node device. The access network equipment has a data channel;

The transceiver module 710 is further configured to send the target data to the target transmission node device.

Optionally, the processing module 720 is specifically used for:

According to the selection strategy and the target data, the target transmission node device is determined.

Optionally, the transceiver module 710 is further configured to receive the selection policy sent by the core network device.

Optionally, the transceiver module 710 is further configured to send a first message to the core network device, where the first message carries capability information of the access network device, where the capability information is used to indicate a connection capable of being supported by the access network device The maximum number of transport node devices;

Wherein, the transceiver module 710 is specifically used for:

The selection policy is received from the core network device.

Optionally, the transceiver module 710 is further configured to send a request message to the core network device, where the request message carries capability information of the access network device, and the capability information is used to indicate the connection-capable transmission supported by the access network device the maximum number of node devices;

Wherein, the transceiver module 710 is specifically used for:

A response message to the request message is received from the core network device, where the response message carries the selection policy.

Optionally, the selection strategy may include load states of the at least two transmission node devices.

Optionally, the transceiver module 710 is further configured to receive indication information, where the indication information is used to indicate that a set of transmission node devices exists in the communication system, and the set of transmission node devices includes the at least two transmission node devices.

Optionally, the processing module 720 is further configured to establish a data channel with the at least two transmission node devices.

Optionally, the data channel includes at least one of a general packet radio service tunneling protocol channel, an internet protocol channel, or an ether channel.

FIG. 8 shows a schematic block diagram of an apparatus 800 for data transmission provided by an embodiment of the present application, and the apparatus 800 may be the terminal device described in FIG. 1 and the terminal device described in FIG. 3 . The device may adopt the hardware architecture shown in FIG. 8 . The apparatus may include a processor 810 and a transceiver 820, and optionally, the apparatus may further include a memory 830, and the processor 810, the transceiver 820 and the memory 830 communicate with each other through an internal connection path. The related functions implemented by the processing module 620 in FIG. 7 can be implemented by the processor 810 , and the related functions implemented by the transceiver module 710 can be implemented by the processor 810 controlling the transceiver 820 .

Optionally, the processor 810 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), a dedicated processor, or one or more An integrated circuit for implementing the technical solutions of the embodiments of the present application. Alternatively, a processor may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions). For example, it may be a baseband processor, or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control devices (eg, base stations, terminal equipment, or chips, etc.), execute software programs, and process data of software programs.

Optionally, the processor 810 may include one or more processors, such as one or more central processing units (central processing units, CPUs). In the case where the processor is a CPU, the CPU may be a single Core CPU, can also be a multi-core CPU.

The transceiver 820 is used to transmit and receive data and/or signals, and to receive data and/or signals. The transceiver may include a transmitter for transmitting data and/or signals and a receiver for receiving data and/or signals.

The memory 830 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable readonly memory (EPROM), and CD-ROM. (compact disc read-only memory, CD-ROM), the memory 830 is used for storing related instructions and data.

The memory 830 is used to store program codes and data of the terminal device, and can be a separate device or integrated in the processor 810 .

Specifically, the processor 810 is configured to control the transceiver to perform information transmission with the network device. For details, refer to the description in the method embodiment, which is not repeated here.

It can be understood that FIG. 8 only shows a simplified design of the apparatus for data transmission. In practical applications, the device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement this application are protected by this application. within the range.

In a possible design, the apparatus 800 may be a chip, for example, may be a communication chip that can be used in a terminal device, for implementing the relevant functions of the processor 810 in the terminal device. The chip can be a field programmable gate array, an application-specific integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions. The chip may optionally include one or more memories for storing program codes, and when the codes are executed, make the processor implement corresponding functions.

In a specific implementation, as an embodiment, the apparatus 800 may further include an output device and an input device. The output device communicates with the processor 810 and can display information in a variety of ways. For example, the output device may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector), etc. . The input device communicates with the processor 601 and can receive user input in a variety of ways. For example, the input device may be a mouse, a keyboard, a touch screen device, or a sensor device, or the like.

FIG. 9 shows a schematic block diagram of an apparatus 900 for data transmission according to an embodiment of the present application.

It should be understood that the apparatus 900 may correspond to the network device in the embodiment shown in FIG. 4 , and may have any function of the network device in the method. The apparatus 900 includes a transceiver module 910 and a processing module 920 .

a transceiver module 910, configured to receive target data from an access network device, the first transmission node device having a data channel with the at least one second transmission node device;

a processing module 920, configured to determine a target transmission node device according to a selection strategy, the selection strategy being used to select a transmission node device for sending the target data from at least one second transmission node device;

The transceiver module 910 is further configured to send the target data to the target transmission node device.

Optionally, the processing module is specifically used for:

According to the selection strategy and the target data, the target transmission node device is determined.

Optionally, the transceiver module is further configured to receive the selection policy from the core network device.

Optionally, the processing module is further configured to establish a data channel with each transfer node device in the at least two transfer node devices except the first transfer node device.

Optionally, the selection strategy may include load states of the at least two transmission node devices.

FIG. 10 shows an apparatus 1000 for data transmission provided by an embodiment of the present application, and the apparatus 1000 may be the access network device described in FIG. 3 . The device may adopt the hardware architecture shown in FIG. 10 . The apparatus may include a processor 1010 and a transceiver 1020, and optionally, the apparatus may further include a memory 1030, and the processor 1010, the transceiver 1020 and the memory 1030 communicate with each other through an internal connection path. The related functions implemented by the processing module 1020 in FIG. 10 can be implemented by the processor 1010 , and the related functions implemented by the transceiver module 1010 can be implemented by the processor 1010 controlling the transceiver 1020 .

Alternatively, the processor 1010 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), a special-purpose processor, or one or more An integrated circuit for implementing the technical solutions of the embodiments of the present application. Alternatively, a processor may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions). For example, it may be a baseband processor, or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the apparatus (eg, base station, terminal device, or chip, etc.), execute software programs, and process data of software programs.

Optionally, the processor 1010 may include one or more processors, such as one or more central processing units (central processing units, CPUs). In the case where the processor is a CPU, the CPU may be a single Core CPU, can also be a multi-core CPU.

The transceiver 1020 is used to transmit and receive data and/or signals, and to receive data and/or signals. The transceiver may include a transmitter for transmitting data and/or signals and a receiver for receiving data and/or signals.

The memory 1030 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable readonly memory (EPROM), and CD-ROM. (compact disc read-only memory, CD-ROM), the memory 1030 is used to store related instructions and data.

The memory 1030 is used to store program codes and data of the terminal device, and may be a separate device or integrated in the processor 1010 .

Specifically, the processor 1010 is configured to control the transceiver to perform information transmission with the network device. For details, refer to the description in the method embodiment, which is not repeated here.

In a specific implementation, as an embodiment, the apparatus 1000 may further include an output device and an input device. The output device communicates with the processor 1010 and can display information in a variety of ways. For example, the output device may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector), etc. . The input device communicates with the processor 601 and can receive user input in a variety of ways. For example, the input device may be a mouse, a keyboard, a touch screen device, or a sensor device, or the like.

It is understood that FIG. 10 only shows a simplified design of the apparatus for data transmission. In practical applications, the device may also include other necessary components, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all terminal devices that can implement this application are protected by this application. within the range.

In a possible design, the apparatus 1000 may be a chip, for example, a communication chip that can be used in a terminal device, for implementing the relevant functions of the processor 1010 in the terminal device. The chip can be a field programmable gate array, an application-specific integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, and a programmable controller or other integrated chips for realizing related functions. The chip may optionally include one or more memories for storing program codes, and when the codes are executed, make the processor implement corresponding functions.

An embodiment of the present application further provides an apparatus, and the apparatus may be a terminal device or a circuit. The apparatus may be used to perform the actions performed by the terminal device in the foregoing method embodiments.

FIG. 11 shows another form of this embodiment. The processing device 1300 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem. The communication device in this embodiment may serve as a modulation subsystem therein. Specifically, the modulation subsystem may include a processor 1303 and an interface 1304 . The processor 1303 completes the functions of the above-mentioned processing module 610 , and the interface 1304 implements the functions of the above-mentioned transceiver module 620 . As another variant, the modulation subsystem includes a memory 1306, a processor 1303, and a program stored in the memory and executable on the processor, and when the processor executes the program, one of Embodiments 1 to 5 is implemented method. It should be noted that the memory 1306 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1300, as long as the memory 1306 can be connected to the The processor 1303 is sufficient.

When the apparatus in this embodiment is a network device, the network device may be as shown in FIG. 12 , and the apparatus 1400 includes one or more radio frequency units, such as a remote radio unit (RRU) 1410 and one or more basebands A baseband unit (BBU) (also referred to as a digital unit, DU) 1420 . The RRU 1410 may be called a transceiver module, which corresponds to the transceiver module 910 in FIG. 9 . Optionally, the transceiver module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1412 and RF unit 1413. The part of the RRU 1410 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending indication information to terminal equipment. The part of the BBU 1410 is mainly used to perform baseband processing, control the base station, and the like. The RRU 1410 and the BBU 1420 may be physically set together or physically separated, that is, a distributed base station.

The BBU 1420 is the control center of the base station, and can also be called a processing module, which can correspond to the processing module 920 in FIG. For example, the BBU (processing module) may be used to control the base station to perform the operation procedure of the network device in the foregoing method embodiments, for example, to generate the foregoing indication information and the like.

In an example, the BBU 1420 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or may respectively support a wireless access network of different access standards. Wireless access network (such as LTE network, 5G network or other network). The BBU 1420 also includes a memory 1421 and a processor 1422. The memory 1421 is used to store necessary instructions and data. The processor 1422 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation flow of the network device in the foregoing method embodiments. The memory 1421 and the processor 1422 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.

As another form of this embodiment, a computer-readable storage medium is provided, on which instructions are stored, and when the instructions are executed, the methods in the foregoing method embodiments are performed.

As another form of this embodiment, a computer program product including an instruction is provided, and the method in the above method embodiment is executed when the instruction is executed.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks, SSD)) etc.

It should be understood that the processor may be an integrated circuit chip, which has signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchronous link DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM).

In this application, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean: the existence of A alone, the existence of A and B at the same time, the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .

It is to be understood that reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, rather than the embodiments of the present invention. implementation constitutes any limitation.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device may be components. One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

It should also be understood that the first, second, and various numerical numbers involved in this document are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application.

It should be understood that the term "and/or" in this document is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time , there are three cases of B alone. Among them, A or B exists alone, and the number of A or B is not limited. Taking the existence of A alone as an example, it can be understood as having one or more A.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

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

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

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or an access network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, removable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (28)

1. A method of data transmission, comprising:

the access network equipment receives target data from the terminal equipment;

the access network equipment determines target transmission node equipment according to a selection strategy, wherein the selection strategy is used for selecting transmission node equipment used for sending the target data from at least two transmission node equipment, and the at least two transmission node equipment and the access network equipment are provided with data channels;

and the access network equipment sends the target data to the target transmission node equipment.

2. The method of claim 1, wherein the access network device determining a target transport node device according to a selection policy comprises:

and the access network equipment determines the target transmission node equipment according to the selection strategy and the target data.

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

and the access network equipment receives the selection strategy sent by the core network equipment.

4. The method of claim 3, further comprising:

the access network equipment sends a request message to core network equipment, wherein the request message carries the capability information of the access network equipment, and the capability information is used for indicating the maximum number of connectable transmission node equipment supported by the access network equipment;

the method for receiving the selection strategy sent by the core network equipment by the access network equipment comprises the following steps:

and the access network equipment receives a response message of the request message from the core network equipment, wherein the response message carries the selection strategy.

5. The method according to any of claims 1 to 4, wherein the selection policy comprises load status of the at least two transmitting node devices.

6. The method according to any one of claims 1 to 5, further comprising:

the access network device receives indication information, where the indication information is used to indicate that a transmission node device set exists in a communication system, and the transmission node device set includes the at least two transmission node devices.

7. The method according to any one of claims 1 to 6, further comprising:

and the access network equipment establishes a data channel with the at least two transmission node equipment.

8. The method of claim 7, wherein the data channel comprises at least one of a general packet radio service tunneling protocol channel, an internet protocol channel, or an ethernet channel.

9. A method of data transmission, the method comprising:

receiving, by a first transport node device from an access network device, target data, the first transport node device having a data channel with the at least one second transport node device;

the first transmission node device determines a target transmission node device according to a selection strategy, wherein the selection strategy is used for selecting the transmission node device used for sending the target data from at least one second transmission node device;

and the first transmission node equipment sends the target data to the target transmission node equipment.

10. The method of claim 9, wherein determining, by the first transport node device, a target transport node device according to a selection policy comprises:

and the first transmission node determines the target transmission node equipment according to the selection strategy and the target data.

11. The method according to claim 9 or 10, characterized in that the method further comprises:

the first transport node device receives the selection policy from a core network device.

12. The method according to any one of claims 9 to 11, further comprising:

the first transmission node device establishes a data channel with each of the at least two transmission node devices except the first transmission node device.

13. Method according to any of claims 9 to 12, wherein said selection policy comprises load status of said at least two transmitting node devices.

14. An apparatus for data transmission, comprising:

the receiving and sending module is used for receiving the target data from the terminal equipment;

a processing module, configured to determine a target transmission node device according to a selection policy, where the selection policy is used to select a transmission node device for sending the target data from at least two transmission node devices, and the at least two transmission node devices and the access network device have a data channel;

the transceiver module is further configured to send the target data to the target transmission node device.

15. The apparatus of claim 14, wherein the processing module is specifically configured to:

and determining the target transmission node equipment according to the selection strategy and the target data.

16. The apparatus according to claim 14 or 15, wherein the transceiver module is further configured to receive the selection policy sent by a core network device.

17. The apparatus of claim 16, wherein the transceiver module is further configured to send a request message to a core network device, where the request message carries capability information of the access network device, and the capability information is used to indicate a maximum number of connectable transport node devices supported by the access network device;

wherein the transceiver module is specifically configured to:

and receiving a response message of the request message from the core network equipment, wherein the response message carries the selection strategy.

18. The arrangement according to any of claims 14-17, wherein said selection policy comprises load status of said at least two transmitting node devices.

19. The apparatus according to any of claims 14 to 18, wherein the transceiver module is further configured to receive indication information indicating that a set of transmission node devices exists in the communication system, the set of transmission node devices including the at least two transmission node devices.

20. The apparatus according to any of claims 14 to 19, wherein the processing module is further configured to establish a data channel with the at least two transmission node devices.

21. The apparatus of claim 20, wherein the data channel comprises at least one of a general packet radio service tunneling protocol channel, an internet protocol channel, or an ethernet channel.

22. An apparatus for data transmission, the method comprising:

a transceiver module, configured to receive target data from an access network device, where the first transmission node device and the at least one second transmission node device have a data channel;

a processing module, configured to determine a target transmission node device according to a selection policy, where the selection policy is used to select a transmission node device for sending the target data from at least one second transmission node device;

the transceiver module is further configured to send the target data to the target transmission node device.

23. The apparatus of claim 22, wherein the processing module is specifically configured to:

and determining the target transmission node equipment according to the selection strategy and the target data.

24. The apparatus according to claim 22 or 23, wherein the transceiver module is further configured to receive the selection policy from a core network device.

25. The apparatus according to any of claims 22 to 24, wherein the processing module is further configured to establish a data channel with each of the at least two transmission node devices except the first transmission node device.

26. The arrangement according to any of the claims 22 to 25, characterised in that said selection policy comprises load status of said at least two transmitting node devices.

27. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 13.

28. A computer program product which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 13.

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