WO2018145529A1 - Data transmission method and device - Google Patents

Abstract

Embodiments of the present invention provide a data transmission method and device. The data transmission method comprises: a baseband processing unit acquires an uplink detecting signal or uplink pilot signal of a terminal received by a number N of radio remote units; a radio remote unit having the best reception quality in the N radio remote units is determined as a target radio remote unit; and beamforming is performed according to a beamforming parameter of the terminal, and downlink data after the beamforming is transmitted to the terminal through the target radio remote unit. By using the described method, the directional transmission of the downlink data of a certain terminal can be achieved according to the reception quality of the uplink detecting signal or uplink pilot signal of the terminal and by determining the target radio remote unit in the N radio remote units to transmit the downlink data of the terminal. Compared with the omni-directional transmission of the downlink data of a terminal in the prior art, embodiments of the present invention can effectively reduce the signal transmission interference in the internal or peripheral frequency spectrum of a cell and improve spectrum quality.

Description

Data transmission method and device

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. .

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.

Background technique

With the rapid development of mobile communication, the number of users of various types of mobile terminals is increasing, resulting in explosive growth of mobile Internet and high-bandwidth data services. There are data showing that global mobile data traffic is expected to exceed 200 from 2010 to 2020. In addition, China's mobile data traffic growth rate is higher than the global average, and is expected to grow more than 300 times from 2010 to 2020. Therefore, the contradiction between the surge of mobile broadband data traffic and the limited spectrum resources in a certain time and space has become a major problem in the field of wireless communications today.

In order to solve this problem, it is usually possible to introduce an unlicensed spectrum and increase the spectrum multiplexing degree. Whether introducing an unlicensed spectrum or increasing the degree of spectrum multiplexing, the base station needs to effectively control signal transmission to reduce signal interference. In the prior art, measures for reducing signal transmission interference include inter-frequency transmission, soft frequency multiplexing, industrial control, carrier transmission avoidance, beamforming, and the like. However, due to several methods such as inter-frequency transmission, soft frequency multiplexing, industrial control, and carrier transmission avoidance, the base station can only perform omnidirectional transmission of signals within its coverage; and the beamforming method is applied to distributed base stations. When the uplink data of the terminal received by each radio remote unit in the distributed base station is difficult to calibrate, each radio remote unit must communicate with the terminal through a proprietary protocol to perform beamforming. The interference in the internal or peripheral common-frequency or pre-frequency spectrum of the cell covered by the distributed base station system is severe, and the spectrum quality is poor.

Therefore, there is a need for a data transmission method to improve signal transmission interference of a distributed base station system and improve spectrum quality.

Summary of the invention

The invention provides a data transmission method and device for improving signal transmission interference of a distributed base station system and improving spectrum quality.

In one aspect, an embodiment of the present invention provides a data transmission method, including:

The baseband processing unit acquires an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, where N is a positive integer;

The baseband processing unit uses the radio frequency remote unit with the best receiving quality as the target radio remote unit according to the receiving quality of the uplink sounding signal or the uplink pilot signal of the terminal received by the N radio frequency remote units;

The baseband processing unit performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and sends the beamformed downlink data to the terminal by using the target radio remote unit.

Optionally, before the baseband processing unit performs beamforming on the data of the terminal according to the beamforming parameter of the terminal, the baseband processing unit further includes:

The baseband processing unit determines a beamforming parameter of the terminal according to an uplink sounding signal or an uplink pilot signal of the terminal received by the target radio frequency remote unit.

Optionally, before the baseband processing unit sends the beamformed data to the terminal by using the target radio remote unit, the baseband processing unit further includes:

The baseband processing unit performs discrete Fourier transform and cyclic prefix addition processing on the beamformed data.

Optionally, the baseband processing unit acquires an uplink sounding signal or an uplink pilot signal of the terminal that is received by the N radio frequency remote units corresponding to the baseband processing unit, and includes:

The baseband processing unit receives an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units;

The method further includes:

The baseband processing unit receives an uplink data signal of the terminal respectively sent by the N radio frequency remote units, or

The baseband processing unit receives the combined uplink data signal of the terminal.

Optionally, the receiving quality is any one of a received power, a signal to noise ratio, a carrier to interference ratio, or any combination.

On the other hand, based on the same inventive concept, the embodiment of the present invention further provides a data transmission apparatus, including:

An acquiring module, configured to acquire an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, where N is a positive integer;

a determining module, configured to use, according to the receiving quality of the uplink sounding signal or the uplink pilot signal of the terminal received by the N radio remote units, the radio remote unit that has the best receiving quality as the target radio remote unit;

And a processing module, configured to perform beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and send the beamformed downlink data to the terminal by using the target radio remote unit.

Optionally, the processing module is further configured to:

And determining, according to the uplink sounding signal or the uplink pilot signal of the terminal received by the target radio remote unit, a beamforming parameter of the terminal.

Optionally, the processing module is further configured to:

The beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing.

Optionally, the obtaining module is specifically configured to:

Receiving an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units;

The obtaining module is further configured to:

Receiving, by the N radio frequency remote units, uplink data signals of the terminal, or receiving the combined uplink data signals of the terminal.

Optionally, the receiving quality is any one or any of a received power, a signal to noise ratio, a carrier to interference ratio.

In another aspect, an embodiment of the present invention provides a computer readable storage medium storing computer executable instructions for causing the computer to perform any of the above Methods.

In another aspect, an embodiment of the present invention provides a communications device, including:

a memory for storing program instructions;

And a processor, configured to invoke a program instruction stored in the memory, and execute the method described in any one of the above according to the obtained program.

Embodiments of the present invention provide a computer program product that, when run on a computer, causes the computer to perform the method of any of the above.

In summary, the embodiment of the present invention provides a data transmission method and apparatus, where the method includes: the baseband processing unit acquires an uplink sounding signal or an uplink pilot of a terminal received by the N radio frequency remote units corresponding to the baseband processing unit. The signal is determined according to the receiving quality of the uplink sounding signal or the uplink pilot signal of the terminal received by the N remote radio units, and the radio remote unit having the best receiving quality is determined as the target radio remote unit, and then according to the beam of the terminal The shaping parameter performs beamforming on the downlink data of the terminal, and sends the beamformed downlink data to the terminal through the target radio remote unit. It can be seen that, by using the above method, the target radio remote unit can be determined from the N radio remote units according to the uplink detection signal of the terminal or the receiving quality of the uplink pilot signal, and transmitted through the target radio remote unit. The downlink data of the terminal is used to transmit the downlink data of the terminal. Compared with the downlink data of the omnidirectional transmitting terminal in the prior art, the embodiment of the present invention can effectively reduce the signal transmission in the internal or surrounding spectrum of the cell. Interference, improve spectrum quality.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a system architecture diagram of an embodiment of the present invention;

2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

3 is a schematic structural diagram of a distributed base station system in a specific embodiment of the present invention;

4 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which . All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The data transmission method provided by the embodiment of the present invention is applicable to a distributed base station, and the distributed base station may include a baseband unit (BBU) and a radio remote unit (Radio Remote Unit). Is RRU), where N is a positive integer.

FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention. As shown in FIG. 1 , the system architecture includes a baseband processing unit 101 and N radio remote units (such as a first radio remote unit 1021, a second radio remote unit 1022, and a third radio remote unit in FIG. 1 ). 1023. The fourth radio remote unit 1024), and one or more terminals (such as the first terminal 1031, the second terminal 1032, the third terminal 1033, and the fourth terminal 1034 in FIG. 1).

Specifically, the baseband processing unit and the N radio frequency remote units can be connected by optical fibers, and after the networking, various types of topologies such as a star connection, a chain connection, and a ring connection are formed. In the embodiment of the present invention, the connection between the baseband processing unit and the radio remote unit may also be performed by other means (such as microwave), which is not limited herein. Of course, the topology formed by the baseband processing unit and the radio remote unit in the embodiment of the present invention can be set by a person skilled in the art according to actual needs, and the same is not limited herein.

The data transmission can be performed by the Ir protocol between the baseband processing unit and the N radio remote units. The baseband processing unit is configured to process the baseband signal, and is generally disposed in the operator's equipment room together with the core network and the wireless network device; the N radio remote units can be used to send downlink data to each terminal of the coverage of the base station. And the uplink data sent by each terminal of the receiving station coverage. In the embodiment of the present invention, the N radio remote units may be disposed at different locations within the coverage of the distributed base station, and the number of the radio remote units and the specific positions of the radio remote units may be determined by those skilled in the art according to actual conditions. Need to set it yourself, there are no specific restrictions here.

In the embodiment of the present invention, the radio remote unit may include an antenna array composed of a plurality of antenna elements. By adjusting the weighted amplitude and phase of the RF signal transmitted by each antenna element in the antenna array, the shape of the radiation pattern of the RF signal emitted by the antenna array can be adjusted, so that the signal in a specific direction can be transmitted to the terminal according to the specific orientation of the terminal. Directional signals to reduce interference.

2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps S201 to S203:

Step S201: The baseband processing unit acquires an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, where N is a positive integer;

Step S202: The baseband processing unit uses the radio frequency remote unit with the best receiving quality as the target radio remote unit according to the receiving quality of the uplink detecting signal or the uplink pilot signal of the terminal received by the N radio remote units. ;

Step S203: The baseband processing unit performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and sends the beamformed downlink data to the terminal;

It can be seen that, by using the above method, the target radio remote unit can be determined from the N radio remote units according to the uplink detection signal of the terminal or the receiving quality of the uplink pilot signal, and transmitted through the target radio remote unit. The downlink data of the terminal is used to transmit the downlink data of the terminal. Compared with the downlink data of the omnidirectional transmitting terminal in the prior art, the embodiment of the present invention can effectively reduce the signal transmission in the internal or surrounding spectrum of the cell. Interference, improve spectrum quality.

In the embodiment of the present invention, the coverage of the distributed base station may include one or more terminals, and the baseband processing unit in the distributed base station may perform the method flow in the foregoing steps S201 to S203 and the coverage of the base station. Any terminal performs data transmission.

Specifically, before the step S201, the baseband processing unit may pre-configure each of the radio remote units connected thereto to independently transmit the uplink sounding signal or the uplink pilot signal of each terminal, that is, the baseband processing unit may pull each radio frequency The uplink sounding signal or the uplink pilot signal sent by each terminal received by the remote unit is independently processed.

In the embodiment of the present invention, the baseband processing unit may determine, according to a communication standard between the N radio remote units and the terminal, whether to independently return an uplink detection signal of each terminal or an uplink pilot signal. Specifically, the baseband processing unit, if it is determined that the N radio remote units communicate with the terminal through the LTE (Long Term Evolution) communication system, configure each of the radio remote units connected thereto to independently transmit the uplink detection signals of the respective terminals; If it is determined that the N radio remote unit exchanges with the terminal through other communication systems, each of the radio remote units connected thereto is configured to independently transmit the uplink pilot signals of the respective terminals.

In step S201, the baseband processing unit acquires the uplink sounding signal or the uplink pilot signal of the terminal that is received by the N radio frequency remote units, and specifically, the N radio frequency remote unit receives the uplink sounding sent by the terminal. After the signal or the uplink pilot signal, the uplink detection signal or the uplink pilot signal of the terminal received by the terminal is respectively sent to the baseband processing unit. The uplink detection signal or the uplink pilot signal sent by the terminal may be an uplink detection signal or an uplink that is fed back to each radio remote unit after the terminal receives the downlink data sent by each radio remote unit of the distributed base station. The pilot signal may also be an uplink detection signal or an uplink pilot signal that is sent by the terminal to each radio remote unit of the distributed base station, and is not limited herein.

In the embodiment of the present invention, the baseband processing unit may receive the uplink data signal of the terminal simultaneously or after receiving the uplink sounding signal or the uplink pilot signal sent by the terminal. The uplink data signal of the terminal may be separately sent by the N radio remote units; or may be any radio remote unit of the N radio remote units, for the N radios The uplink data signals of the terminal respectively received by the remote unit are combined and sent; or, the base station processing unit or the extension unit of the distributed base station performs uplink data signals respectively sent by the N radio remote units The method of transmitting the uplink data signal is not related to the configuration of the distributed base station.

In step S202, after the baseband processing unit acquires the uplink sounding signal or the uplink pilot signal of the terminal received by the N remote radio units, the uplink sounding signal or the uplink signal of the terminal received by each radio remote unit The frequency signals are parsed one by one, and the receiving quality of the uplink sounding signal or the uplink pilot signal of the terminal received by each radio remote unit is determined, and the radio remote unit having the best receiving quality is determined as the target of the terminal. RF remote unit. The receiving quality may be any one of a received power, a signal to noise ratio, a carrier to interference ratio, or any combination.

In step S203, the baseband processing unit may determine the beamforming parameter of the terminal according to the uplink detection signal or the uplink pilot signal of the terminal that is received by the target radio remote unit. The beamforming parameter is specifically a weight coefficient of a signal and a phase or a phase of a signal transmitted by each antenna element in the target radio remote unit when the terminal is beamformed by the target radio remote unit. Since the method of calculating the beamforming parameters belongs to the prior art, the calculation process will not be specifically described herein.

Then, the baseband processing unit performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and sends the beamformed downlink data to the terminal by using the target radio remote unit.

Specifically, a possible implementation manner is: the baseband processing unit performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and performs discrete Fourier transform and cyclic prefix addition processing to form and The multi-antenna data matched by each antenna array element in the target radio remote unit, and the processed downlink data of the terminal is sent to the target radio remote unit, and sent by the target radio remote unit to the terminal .

Another possible implementation manner is that the baseband processing unit performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and then sends the obtained downlink data after the beamforming processing to the target radio frequency pull. a remote unit, and performing, by the target radio remote unit, the discrete Fourier transform and the cyclic prefix adding process on the downlink data after the beamforming processing, to form a plurality of antenna elements in the target radio remote unit The matched multi-antenna data is sent to the terminal.

It should be noted that the target radio remote unit may also send a common channel signal to all terminals in the coverage of the base station.

The invention will now be explained in connection with a specific embodiment.

3 is a schematic structural diagram of a distributed base station system according to an embodiment of the present invention. As shown in FIG. 3, the distributed base station system in this embodiment is coordinated by a baseband processing unit and four radio remote units to complete a cell. cover. At a certain time, the distributed base station system accesses two terminals of terminal 0 and terminal 1. Then, the baseband processing unit can allocate uplink detection signal or uplink pilot signal transmission resource to terminal 0 and terminal 1, and configure four. The radio remote unit independently returns the received uplink sounding signal or uplink pilot signal transmitted by the two terminals. As shown in FIG. 3, the four radio remote units are respectively the radio remote unit 0 and the radio frequency pull. Remote unit 1, radio remote unit 2, radio remote unit 3.

The terminal 0 and the terminal 1 may periodically transmit an uplink sounding signal or an uplink pilot signal on the allocated resources, and each radio remote unit may receive the uplink sounding signal of the terminal 0 and the terminal 1 of the independent backhaul. The detected signal is sent to the baseband processing unit, and the baseband processing unit parses the uplink sounding signals of the terminal 0 and the terminal 1 received by the respective remote radio receiving units to obtain the receiving quality, and determines that the optimal receiving remote unit of the terminal 0 is in the cell. The radio remote unit 2, the optimal receiving and remote unit of the terminal 1 is the radio remote unit 3 in the cell.

The baseband processing unit may calculate the beamforming parameter of the terminal 0 according to the uplink sounding signal of the terminal 0 received by the remote radio unit 2 in the cell, and according to the detection signal of the terminal 1 received by the radio remote unit 3 in the cell, The beamforming parameters of the terminal 1 are calculated. The baseband processing unit performs beamforming processing on the downlink data of each terminal according to the beamforming parameters of each terminal calculated in the foregoing, forms multi-antenna data, and notifies the radio remote unit 2 in the cell to transmit only the common channel. And the downlink data of the terminal 0, the remote unit 3 in the cell only transmits the downlink data of the common channel and the terminal 1.

Based on the same inventive concept, the embodiment of the present invention further provides a data transmission device. As shown in FIG. 4, the device includes:

The obtaining module 401 is configured to obtain an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, where N is a positive integer;

The determining module 402 is configured to use, according to the receiving quality of the uplink sounding signal or the uplink pilot signal of the terminal received by the N radio remote units, the radio remote unit that has the best receiving quality as the target radio remote unit;

The processing module 403 is configured to perform beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and send the beamformed downlink data to the terminal by using the target radio remote unit.

Optionally, the processing module 403 is further configured to:

And determining, according to the uplink sounding signal or the uplink pilot signal of the terminal received by the target radio remote unit, a beamforming parameter of the terminal.

Optionally, the processing module 403 is further configured to:

The beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing.

Optionally, the obtaining module is specifically configured to:

Receiving an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units;

The obtaining module is further configured to:

Receiving, by the N radio frequency remote units, uplink data signals of the terminal, or receiving the combined uplink data signals of the terminal.

Optionally, the receiving quality is any one or any of a received power, a signal to noise ratio, a carrier to interference ratio.

Based on the same inventive concept, the embodiment of the present invention further provides a communication device. As shown in FIG. 5, a schematic structural diagram of a communication device according to an embodiment of the present invention may be included. The communication device may include a central processing unit 501 (Center Processing) Unit, CPU), memory 502, input/output device 503, bus system 504, etc., the input device may include a keyboard, a mouse, a touch screen, etc., and the output device may include a display device such as a liquid crystal display (LCD), a cathode ray. Tube (Cathode Ray Tube, CRT) and the like.

Memory 502 can include read only memory (ROM) and random access memory (RAM) and provides program instructions and data stored in the memory to the processor. In the embodiment of the present invention, the memory may be used to store a program of the method provided by any embodiment of the present invention, and the processor executes the method disclosed in any one of the embodiments according to the obtained program instruction by calling a program instruction stored in the memory. .

Based on the same inventive concept, an embodiment of the present invention further provides a computer readable storage medium for storing computer program instructions for use in the above communication device, comprising a program for executing the method disclosed in any of the above embodiments.

The computer storage medium can be any available media or data storage device accessible by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memories (for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).

Based on the same inventive concept, an embodiment of the present invention further provides a computer program product that, when run on a computer, causes the computer to perform the method disclosed in any of the above embodiments.

It can be seen from the above:

In the embodiment of the present invention, the baseband processing unit acquires an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, and performs uplink detection according to the terminal received by the N radio frequency remote units. Determining the reception quality of the signal or the uplink pilot signal, determining the radio remote unit having the best reception quality as the target radio remote unit, and further performing beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and The downlink data after the beamforming is sent to the terminal through the target radio remote unit; it can be seen that, by using the above method, the radio frequency can be extended from the N radio signals according to the uplink detection signal of the terminal or the receiving quality of the uplink pilot signal. The target radio remote unit is determined in the unit, and the downlink data of the terminal is sent by the target radio remote unit, so that the downlink data of the terminal is transmitted, which is compared with the downlink data of the omnidirectional transmitting terminal in the prior art. The embodiment of the invention can effectively reduce signal transmission interference in the internal or surrounding spectrum of the cell and improve spectrum quality.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the invention as claimed.

Claims (13)

A data transmission method, comprising: The baseband processing unit acquires an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, where N is a positive integer; The baseband processing unit uses the radio frequency remote unit with the best receiving quality as the target radio remote unit according to the receiving quality of the uplink sounding signal or the uplink pilot signal of the terminal received by the N radio frequency remote units; The baseband processing unit performs beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and sends the beamformed downlink data to the terminal by using the target radio remote unit. The data transmission method according to claim 1, wherein the baseband processing unit further comprises: before performing beamforming on the data of the terminal according to the beamforming parameter of the terminal, The baseband processing unit determines a beamforming parameter of the terminal according to an uplink sounding signal or an uplink pilot signal of the terminal received by the target radio frequency remote unit. The data transmission method according to claim 1, wherein the baseband processing unit further comprises: before the beam shaping data is sent to the terminal by the target radio remote unit; The baseband processing unit performs discrete Fourier transform and cyclic prefix addition processing on the beamformed data. The data transmission method according to claim 1, wherein the baseband processing unit acquires an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, including : The baseband processing unit receives an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units; The data transmission method further includes: The baseband processing unit receives an uplink data signal of the terminal respectively sent by the N radio frequency remote units, or The baseband processing unit receives the combined uplink data signal of the terminal. The data transmission method according to any one of claims 1 to 4, wherein the reception quality is any one of a received power, a signal-to-noise ratio, a carrier-to-interference ratio, or any combination. A data transmission device, characterized in that the device comprises: An acquiring module, configured to acquire an uplink sounding signal or an uplink pilot signal of the terminal received by the N radio frequency remote units corresponding to the baseband processing unit, where N is a positive integer; a determining module, configured to use, according to the receiving quality of the uplink sounding signal or the uplink pilot signal of the terminal received by the N radio remote units, the radio remote unit that has the best receiving quality as the target radio remote unit; And a processing module, configured to perform beamforming on the downlink data of the terminal according to the beamforming parameter of the terminal, and send the beamformed downlink data to the terminal by using the target radio remote unit. The data transmission device according to claim 6, wherein the processing module is further configured to: And determining, according to the uplink sounding signal or the uplink pilot signal of the terminal received by the target radio remote unit, a beamforming parameter of the terminal. The data transmission device according to claim 6, wherein the processing module is further configured to: The beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing. The data transmission device according to claim 6, wherein the acquisition module is specifically configured to: Receiving an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units; The obtaining module is further configured to: Receiving, by the N radio remote units, uplink data signals of the terminal, or receiving the combined uplink data signals of the terminal. The data transmission device according to any one of claims 6 to 9, wherein the reception quality is any one or any of a reception power, a signal-to-noise ratio, and a carrier-to-interference ratio. A computer readable storage medium, wherein the computer readable storage medium stores computer executable instructions for causing the computer to perform the method of any one of claims 1 to 5. method. A communication device, comprising: a memory for storing program instructions; And a processor for invoking program instructions stored in the memory, and performing the method according to any one of claims 1 to 5 according to the obtained program. A computer program product, characterized in that when the computer program product is run on a computer, the computer is caused to perform the method of any one of claims 1 to 5.

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