WO2018145529A1 - Data transmission method and device - Google Patents

Data transmission method and device Download PDF

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Publication number
WO2018145529A1
WO2018145529A1 PCT/CN2017/119492 CN2017119492W WO2018145529A1 WO 2018145529 A1 WO2018145529 A1 WO 2018145529A1 CN 2017119492 W CN2017119492 W CN 2017119492W WO 2018145529 A1 WO2018145529 A1 WO 2018145529A1
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WO
WIPO (PCT)
Prior art keywords
terminal
uplink
signal
processing unit
baseband processing
Prior art date
Application number
PCT/CN2017/119492
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French (fr)
Chinese (zh)
Inventor
李伟丹
Original Assignee
京信通信系统（中国）有限公司
京信通信系统（广州）有限公司
京信通信技术(广州)有限公司
天津京信通信系统有限公司
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Publication of WO2018145529A1 publication Critical patent/WO2018145529A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2609—Arrangements for range control, e.g. by using remote antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.
  • the base station 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.
  • measures for reducing signal transmission interference include inter-frequency transmission, soft frequency multiplexing, industrial control, carrier transmission avoidance, beamforming, and the like.
  • the base station can only perform omnidirectional transmission of signals within its coverage; and the beamforming method is applied to distributed base stations.
  • each radio remote unit in the distributed base station 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.
  • the invention provides a data transmission method and device for improving signal transmission interference of a distributed base station system and improving spectrum quality.
  • 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.
  • the baseband processing unit 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.
  • the baseband processing unit 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.
  • 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.
  • the receiving quality is any one of a received power, a signal to noise ratio, a carrier to interference ratio, or any combination.
  • 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;
  • 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.
  • processing module is further configured to:
  • processing module is further configured to:
  • the beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing.
  • the obtaining module is specifically configured to:
  • the obtaining module is further configured to:
  • the receiving quality is any one or any of a received power, a signal to noise ratio, a carrier to interference ratio.
  • 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.
  • an embodiment of the present invention provides a communications device, including:
  • a memory for storing program instructions
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 1 is a system architecture diagram of an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a distributed base station system in a specific embodiment of the present invention.
  • FIG. 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.
  • 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.
  • BBU baseband unit
  • Radio Remote Unit Radio Remote Unit
  • FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • 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).
  • 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.
  • 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.
  • 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.
  • 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.
  • the radio remote unit may include an antenna array composed of a plurality of antenna elements.
  • 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.
  • FIG. 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;
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • LTE Long Term Evolution
  • 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.
  • 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.
  • 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.
  • 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.
  • the receiving quality may be any one of a received power, a signal to noise ratio, a carrier to interference ratio, or any combination.
  • 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.
  • 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.
  • 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 .
  • 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.
  • the target radio remote unit may also send a common channel signal to all terminals in the coverage of the base station.
  • FIG. 3 is a schematic structural diagram of a distributed base station system according to an embodiment of the present invention.
  • 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.
  • the distributed base station system accesses two terminals of terminal 0 and terminal 1.
  • 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.
  • the four radio remote units are respectively the radio remote unit 0 and the radio frequency pull.
  • 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.
  • 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.
  • the embodiment of the present invention further provides a data transmission device.
  • 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.
  • processing module 403 is further configured to:
  • processing module 403 is further configured to:
  • the beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing.
  • the obtaining module is specifically configured to:
  • the obtaining module is further configured to:
  • the receiving quality is any one or any of a received power, a signal to noise ratio, a carrier to interference ratio.
  • the embodiment of the present invention further provides a communication device.
  • a schematic structural diagram of a communication device 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.
  • 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.
  • LCD liquid crystal display
  • CRT cathode Ray Tube
  • 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.
  • ROM read only memory
  • RAM random access memory
  • 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. .
  • 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)).
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memories for example, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state hard disk (SSD)).
  • 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.
  • 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.

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

一种数据传输方法及装置Data transmission method and device
本申请要求在2017年2月10日提交中国专利局、申请号为201710073444.1、发明名称为“一种数据传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。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. .
技术领域Technical field
本发明涉及无线通信技术领域，尤其涉及一种数据传输方法及装置。The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.
背景技术Background technique
随着移动通信的迅速发展，各种类型的移动终端的用户不断增加，导致了移动互联网和高带宽数据业务呈现爆炸式增长，有数据显示，预计2010年到2020年全球移动数据流量将超过200倍，而且，中国的移动数据流量增速高于全球平均水平，预计2010年到2020年将增长超过300倍。于是，移动宽带数据流量的激增与一定时间和空间内有限的频谱资源之间的矛盾已成为当今无线通信领域面临的一个重大问题。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.
为解决这一问题，通常可引入非授权频谱和增大频谱复用度两项措施，而无论是引入非授权频谱或是增大频谱复用度都需要基站有效控制信号发射以降低信号干扰。现有技术中，降低信号发射干扰的措施包括异频发射、软频率复用、工控、载波发射避让、波束赋形等。然而，由于采用异频发射、软频率复用、工控、载波发射避让等几种方法时，基站在其覆盖范围内只能进行信号的全向发射；而波束赋形方法在应用于分布式基站时，因分布式基站中的各个射频拉远单元接收到的终端的上行数据之间很难校准，必须通过专有协议使各个射频拉远单元与终端进行通信，才能进行波束赋形，因而，使得分布式基站系统覆盖的小区内部及周边共频或临频频谱中干扰严重，频谱质量较差。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.
因此，目前亟需要一种数据传输方法，以提高分布式基站系统的信号发射干扰，提高频谱质量。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.
发明内容Summary of the invention
本发明提供一种数据传输方法及装置，用以提高分布式基站系统的信号发射干扰，提高频谱质量。The invention provides a data transmission method and device for improving signal transmission interference of a distributed base station system and improving spectrum quality.
一方面,本发明实施例提供一种数据传输方法，包括：In one aspect, an embodiment of the present invention provides a data transmission method, including:
基带处理单元获取与所述基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，N为正整数；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;
所述基带处理单元根据所述N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元作为目标射频拉远单元；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;
所述基带处理单元根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过所述目标射频拉远单元发送给所述终端。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.
可选地，所述基带处理单元根据所述终端的波束赋形参数对所述终端的数据进行波束赋形之前，还包括：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:
所述基带处理单元根据所述目标射频拉远单元接收到的终端的上行探测信号或上行导频信号，确定所述终端的波束赋形参数。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.
可选地，所述基带处理单元将波束赋形后的数据通过所述目标射频拉远单元发送给所述终端之前，还包括：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:
所述基带处理单元对所述波束赋形后的数据进行离散傅里叶变换、循环前缀添加处理。The baseband processing unit performs discrete Fourier transform and cyclic prefix addition processing on the beamformed data.
可选地，所述基带处理单元获取与所述基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，包括：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:
所述基带处理单元接收所述N个射频拉远单元分别发送的所述终端的上行探测信号或上行导频信号；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;
所述方法还包括：The method further includes:
所述基带处理单元接收所述N个射频拉远单元分别发送的所述终端的上行数据信号，或者，The baseband processing unit receives an uplink data signal of the terminal respectively sent by the N radio frequency remote units, or
所述基带处理单元接收合并后的所述终端的上行数据信号。The baseband processing unit receives the combined uplink data signal of the terminal.
可选地，所述接收质量为接收功率、信噪比、载干比中的任一项或任意组合。Optionally, the receiving quality is any one of a received power, a signal to noise ratio, a carrier to interference ratio, or any combination.
另一方面,基于同样的发明构思，本发明实施例进一步地提供一种数据传输装置，包括：On the other hand, based on the same inventive concept, the embodiment of the present invention further provides a data transmission apparatus, including:
获取模块，用于获取与基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，N为正整数；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;
确定模块，用于根据所述N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元作为目标射频拉远单元；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;
处理模块，用于根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过所述目标射频拉远单元发送给所述终端。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.
可选地，所述处理模块还用于：Optionally, the processing module is further configured to:
根据所述目标射频拉远单元接收到的终端的上行探测信号或上行导频信号，确定所述终端的波束赋形参数。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.
可选地，所述处理模块还用于：Optionally, the processing module is further configured to:
对所述波束赋形后的数据进行离散傅里叶变换、循环前缀添加处理。The beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing.
可选地，所述获取模块具体用于：Optionally, the obtaining module is specifically configured to:
接收所述N个射频拉远单元分别发送的所述终端的上行探测信号或上行导频信号；Receiving an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units;
所述获取模块还用于：The obtaining module is further configured to:
接收所述N个射频拉远单元分别发送的所述终端的上行数据信号，或者，接收合并后的所述终端的上行数据信号。Receiving, by the N radio frequency remote units, uplink data signals of the terminal, or receiving the combined uplink data signals of the terminal.
可选地，所述接收质量为接收功率、信噪比、载干比中的任一项或任意多项。Optionally, the receiving quality is any one or any of a received power, a signal to noise ratio, a carrier to interference ratio.
另一方面,本发明实施例提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行上述任一项所述的方法。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.
另一方面,本发明实施例提供一种通信设备，包括：In another aspect, an embodiment of the present invention provides a communications device, including:
存储器，用于存储程序指令；a memory for storing program instructions;
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行上述任一项所述的方法。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.
本发明实施例提供一种计算机程序产品，当其在计算机上运行时，使得计算机执行上述任一项所述的方法。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.
综上所述，本发明实施例提供一种数据传输方法及装置，其中方法包括：基带处理单元获取与基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，根据N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元确定为目标射频拉远单元，进而可根据终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过目标射频拉远单元发送给终端。由此可知，采用上述方法，可根据某一终端的上行探测信号或上行导频信号的接收质量，从N个射频拉远单元中确定出目标射频拉远单元，并通过目标射频拉远单元发送该终端的下行数据，实现了定向发送该终端的下行数据，相比于现有技术中全向发射终端的下行数据来说，本发明实施例能够有效地降低小区内部或周边频谱中的信号发射干扰，提高频谱质量。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.
附图说明DRAWINGS
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的 前提下，还可以根据这些附图获得其他的附图。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.
图1为本发明实施例适用的系统架构图；1 is a system architecture diagram of an embodiment of the present invention;
图2为本发明实施例中的一种数据传输方法所对应的流程示意图；2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;
图3为本发明具体实施例中的分布式基站系统的结构示意图；3 is a schematic structural diagram of a distributed base station system in a specific embodiment of the present invention;
图4为本发明实施例中的一种数据传输装置的结构示意图；4 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;
图5为本发明实施例提供的一种通信设备结构示意图。FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
具体实施方式detailed description
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部份实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。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.
本发明实施例提供的数据传输方法可应用于分布式基站，所述分布式基站中可包括一个基带处理单元(Base Band Unit，简称为BBU)和N个射频拉远单元(Radio Remote Unit，简称为RRU)，其中，N为正整数。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.
图1为本发明实施例适用的一种系统架构示意图。如图1所示，该系统架构中包括基带处理单元101，N个射频拉远单元(如图1中的第一射频拉远单元1021、第二射频拉远单元1022、第三射频拉远单元1023、第四射频拉远单元1024)，以及一个或多个终端(如图1中的第一终端1031、第二终端1032、第三终端1033、第四终端1034)。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).
具体来说，基带处理单元与N个射频拉远单元之间可通过光纤进行连接，并在组网后，形成星型连接、链型连接、环形连接等多种类型的拓扑结构。本发明实施例中，基带处理单元和射频拉远单元之间可也通过其他方式(如微波)进行连接，此处不做限制。当然，本发明实施例中的基带处理单元与射频拉远单元组网后形成的拓扑结构，可由本领域技术人员根据实际需要自行设置，此处同样不做限制。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.
基带处理单元与N个射频拉远单元之间可通过Ir协议进行数据传输。其中，基带处理单元用于对基带信号进行处理，其通常可与核心网和无线网络设备一同设置在运营商的机房内；N个射频拉远单元可用于向基站覆盖范围的各个终端发送下行数据，以及接收站覆盖范围的各个终端发送的上行数据。本发明实施例中，N个射频拉远单元可设置在分布式基站覆盖范围内的不同位置，且射频拉远单元的数量以及各个射频拉远单元设置的具体位置均可由本领域技术人员根据实际需要自行设置，此处不做具体限制。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.
本发明实施例中，射频拉远单元中可包括多个天线阵元组成的天线阵列。通过调节天线阵列中各个天线阵元发送射频信号的加权幅度和相位，可调节天线阵列发射射频信号的辐射方向图形状，从而可根据终端的具体方位，通过增强特定方向上的信号，向终端发射定向信号，减小干扰。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.
图2为本发明实施例提供的一种数据传输方法所对应的流程示意图，如图2所示，包括以下步骤S201至步骤S203：2 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:
步骤S201：基带处理单元获取与所述基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，N为正整数；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;
步骤S202：所述基带处理单元根据所述N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元作为目标射频拉远单元；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. ;
步骤S203：所述基带处理单元根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过所述目标射频拉远单元发送给所述终端；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;
由此可知，采用上述方法，可根据某一终端的上行探测信号或上行导频信号的接收质量，从N个射频拉远单元中确定出目标射频拉远单元，并通过目标射频拉远单元发送该终端的下行数据，实现了定向发送该终端的下行数据，相比于现有技术中全向发射终端的下行数据来说，本发明实施例能够有效地降低小区内部或周边频谱中的信号发射干扰，提高频谱质量。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.
本发明实施例中，分布式基站的覆盖范围内可包括一个或多个终端，所 述分布式基站中的基带处理单元，可通过执行上述步骤S201至S203中的方法流程与基站覆盖范围内的任一终端进行数据传输。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.
具体来说，在步骤S201之前，基带处理单元可预先配置与其连接的各个射频拉远单元独立回传各个终端的上行探测信号或上行导频信号，也就是说，基带处理单元可对各个射频拉远单元接收到的每个终端发送的上行探测信号或上行导频信号进行独立处理。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.
本发明实施例中，基带处理单元可根据N个射频拉远单元与终端之间的通信制式，确定独立回传各个终端的上行探测信号，还是上行导频信号。具体的，基带处理单元若确定N个射频拉远单元通过LTE(Long Term Evolution，长期演进)通信制式与终端通信，则配置与其连接的各个射频拉远单元独立回传各个终端的上行探测信号；若确定N个射频拉远单元单元通过其他通信制式与终端通信，则配置与其连接的各个射频拉远单元独立回传各个终端的上行导频信号。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.
步骤S201中，基带处理单元获取N个射频拉远单元接收到的所述终端的上行探测信号或上行导频信号，具体可以为：N个射频拉远单元在接收到所述终端发送的上行探测信号或上行导频信号后，将各自接收到的所述终端的上行探测信号或上行导频信号分别发送给基带处理单元。其中，所述终端发送的上行探测信号或上行导频信号可以为所述终端接收到分布式基站的各个射频拉远单元发送的下行数据后，向各个射频拉远单元反馈的上行探测信号或上行导频信号，也可以为所述终端主动向分布式基站的各个射频拉远单元发送的上行探测信号或上行导频信号，此处不做限制。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.
本发明实施例中，基带处理单元在还可以在接收到所述终端发送的上行探测信号或上行导频信号的同时或之后，接收所述终端的上行数据信号。其中，所述终端的上行数据信号可以是所述N个射频拉远单元分别发送的；也可以是所述N个射频拉远单元中的任一射频拉远单元，对所述N个射频拉远单元分别接收的所述终端的上行数据信号进行合并后发送的；又或者，还可以是基带处理单元或者分布式基站中扩展单元对所述N个射频拉远单元分别 发送的上行数据信号进行合并后发送的；由于接收所述终端的上行数据信号的方式与分布式基站的配置相关，故此处不做具体限制。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.
步骤S202中，基带处理单元获取N个射频拉远单元接收到的所述终端的上行探测信号或上行导频信号后，对各个射频拉远单元接收到的所述终端的上行探测信号或上行导频信号进行逐一解析，确定出各个射频拉远单元接收到的所述终端的上行探测信号或上行导频信号的接收质量，并将接收质量最佳的射频拉远单元确定为所述终端的目标射频拉远单元。其中，接收质量可以为接收功率、信噪比、载干比中的任一项或任意组合。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.
步骤S203中，基带处理单元可根据上述确定出的目标射频拉远单元接收到的所述终端的上行探测信号或上行导频信号，确定所述终端的波束赋形参数。所述波束赋形参数具体为，通过目标射频拉远单元对所述终端进行波束成型时，目标射频拉远单元中各个天线阵元发射信号的幅度和\或相位的权重系数。由于计算波束赋形参数的方法属于现有技术，故此处不再对其计算过程进行具体描述。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.
随后，基带处理单元根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过所述目标射频拉远单元发送给所述终端。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.
具体来说，一种可能的实现方式为，基带处理单元根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，以及离散傅里叶变换、循环前缀添加处理，形成与目标射频拉远单元中的各个天线阵元相匹配的多天线数据，并将处理后的所述终端的下行数据发送给目标射频拉远单元，由所述目标射频拉远单元发送给所述终端。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 .
另一种可能的实现方式为，基带处理单元根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形后，将得到的波束赋形处理后的下行数据发送给目标射频拉远单元，并由目标射频拉远单元对所述波束赋形处理后的下行数据进行离散傅里叶变换和循环前缀添加处理，形成与所述目标射频拉远单元中的多个天线阵元相匹配的多天线数据后，发送给所述终端。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.
需要说明的是，所述目标射频拉远单元还可以向所述基站覆盖范围内的所有终端发送公共信道信号。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.
下面结合一个具体的实施例对本发明进行解释说明。The invention will now be explained in connection with a specific embodiment.
图3为本发明具体实施例中的分布式基站系统的结构示意图，如图3所示，本具体实施例中的分布式基站系统由一个基带处理单元和四个射频拉远单元协同完成小区的覆盖。某一时刻，该分布式基站系统中接入了终端0、终端1两个终端，于是，基带处理单元可对给终端0及终端1分配上行探测信号或者上行导频信号发送资源，并配置四个射频拉远单元独立回传接收到的这两个终端发射的上行探测信号或者上行导频信号，如图3所示，所述四个射频拉远单元分别为射频拉远单元0、射频拉远单元1、射频拉远单元2、射频拉远单元3。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.
终端0、终端1可在所分配的资源上周期性地发射上行探测信号或者上行导频信号，各个射频拉远单元接收到独立回传的终端0及终端1的上行探测信号后，可把接收到的探测信号发送给基带处理单元，基带处理单元解析各个射频拉远单元接收到的终端0和终端1的上行探测信号得到接收质量，并确定终端0的最佳接收拉远单元为小区中的射频拉远单元2，终端1的最佳接收拉远单元为小区中的射频拉远单元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.
基带处理单元可根据小区中射频拉远单元2中接收到的终端0的上行探测信号，计算得到终端0的波束赋形参数，根据小区中射频拉远单元3接收到的终端1的探测信号，计算得到终端1的波束赋形参数。基带处理单元将根据前述计算得到的每个终端的波束赋形参数，对每个终端的下行数据进行波束赋形处理，形成多天线数据，并通知小区中的射频拉远单元2只发射公共信道及终端0的下行数据，小区中的拉远单元3只发射公共信道及终端1的下行数据。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.
基于相同的发明构思，本发明实施例还提供了一种数据传输装置，如图4所示，所述装置包括：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:
获取模块401，用于获取与基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，N为正整数；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;
确定模块402，用于根据所述N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元作为目标射频拉远单元；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;
处理模块403，用于根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过所述目标射频拉远单元发送给所述终端。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.
可选地，所述处理模块403还用于：Optionally, the processing module 403 is further configured to:
根据所述目标射频拉远单元接收到的终端的上行探测信号或上行导频信号，确定所述终端的波束赋形参数。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.
可选地，所述处理模块403还用于：Optionally, the processing module 403 is further configured to:
对所述波束赋形后的数据进行离散傅里叶变换、循环前缀添加处理。The beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing.
可选地，所述获取模块具体用于：Optionally, the obtaining module is specifically configured to:
接收所述N个射频拉远单元分别发送的所述终端的上行探测信号或上行导频信号；Receiving an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units;
所述获取模块还用于：The obtaining module is further configured to:
接收所述N个射频拉远单元分别发送的所述终端的上行数据信号，或者，接收合并后的所述终端的上行数据信号。Receiving, by the N radio frequency remote units, uplink data signals of the terminal, or receiving the combined uplink data signals of the terminal.
可选地，所述接收质量为接收功率、信噪比、载干比中的任一项或任意多项。Optionally, the receiving quality is any one or any of a received power, a signal to noise ratio, a carrier to interference ratio.
基于相同的发明构思，本发明实施例还提供一种通信设备，如图5所示，为本发明实施例提供的一种通信设备的结构示意图，该通信设备可以包括中央处理器501(Center Processing Unit，CPU)、存储器502、输入/输出设备503、总线系统504等，输入设备可以包括键盘、鼠标、触摸屏等，输出设备可以包括显示设备，如液晶显示器(Liquid Crystal Display，LCD)、阴极射线管(Cathode Ray Tube，CRT)等。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.
存储器502可以包括只读存储器(ROM)和随机存取存储器(RAM)，并向处理器提供存储器中存储的程序指令和数据。在本发明实施例中，存储器可以用于存储本发明任一实施例所提供的方法的程序，处理器通过调用存储器存储的程序指令，按照获得的程序指令执行上述任一实施例所公开的方法。 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. .
基于相同的发明构思，本发明实施例还提供一种计算机可读存储介质，用于存储为上述通信设备所用的计算机程序指令，其包含用于执行上述任一实施例所公开的方法的程序。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.
所述计算机存储介质可以是计算机能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。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)).
基于相同的发明构思，本发明实施例还提供一种计算机程序产品，当其在计算机上运行时，使得计算机执行上述任一实施例所公开的方法。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.
由上述内容可以看出：It can be seen from the above:
本发明实施例中，基带处理单元获取与基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，根据N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元确定为目标射频拉远单元，进而可根据终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过目标射频拉远单元发送给终端；由此可知，采用上述方法，可根据某一终端的上行探测信号或上行导频信号的接收质量，从N个射频拉远单元中确定出目标射频拉远单元，并通过目标射频拉远单元发送该终端的下行数据，实现了定向发送该终端的下行数据，相比于现有技术中全向发射终端的下行数据来说，本发明实施例能够有效地降低小区内部或周边频谱中的信号发射干扰，提高频谱质量。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.
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。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
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包括这些改动和变型在内。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)

  1. 一种数据传输方法，其特征在于，包括：A data transmission method, comprising:
    基带处理单元获取与所述基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，N为正整数；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;
    所述基带处理单元根据所述N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元作为目标射频拉远单元；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;
    所述基带处理单元根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过所述目标射频拉远单元发送给所述终端。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.
  2. 根据权利要求1所述的数据传输方法，其特征在于，所述基带处理单元根据所述终端的波束赋形参数对所述终端的数据进行波束赋形之前，还包括：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,
    所述基带处理单元根据所述目标射频拉远单元接收到的终端的上行探测信号或上行导频信号，确定所述终端的波束赋形参数。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.
  3. 根据权利要求1所述的数据传输方法，其特征在于，所述基带处理单元将波束赋形后的数据通过所述目标射频拉远单元发送给所述终端之前，还包括：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;
    所述基带处理单元对所述波束赋形后的数据进行离散傅里叶变换、循环前缀添加处理。The baseband processing unit performs discrete Fourier transform and cyclic prefix addition processing on the beamformed data.
  4. 根据权利要求1所述的数据传输方法，其特征在于，所述基带处理单元获取与所述基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，包括：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 :
    所述基带处理单元接收所述N个射频拉远单元分别发送的所述终端的上行探测信号或上行导频信号；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;
    所述数据传输方法还包括：The data transmission method further includes:
    所述基带处理单元接收所述N个射频拉远单元分别发送的所述终端的上行数据信号，或者，The baseband processing unit receives an uplink data signal of the terminal respectively sent by the N radio frequency remote units, or
    所述基带处理单元接收合并后的所述终端的上行数据信号。The baseband processing unit receives the combined uplink data signal of the terminal.
  5. 根据权利要求1-4中任一项所述的数据传输方法，其特征在于，所述接收质量为接收功率、信噪比、载干比中的任一项或任意组合。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.
  6. 一种数据传输装置，其特征在于，所述装置包括：A data transmission device, characterized in that the device comprises:
    获取模块，用于获取与基带处理单元对应的N个射频拉远单元接收到的终端的上行探测信号或上行导频信号，N为正整数；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;
    确定模块，用于根据所述N个射频拉远单元接收到的终端的上行探测信号或上行导频信号的接收质量，将接收质量最佳的射频拉远单元作为目标射频拉远单元；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;
    处理模块，用于根据所述终端的波束赋形参数对所述终端的下行数据进行波束赋形，并将波束赋形后的下行数据通过所述目标射频拉远单元发送给所述终端。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.
  7. 根据权利要求6所述的数据传输装置，其特征在于，所述处理模块还用于：The data transmission device according to claim 6, wherein the processing module is further configured to:
    根据所述目标射频拉远单元接收到的终端的上行探测信号或上行导频信号，确定所述终端的波束赋形参数。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.
  8. 根据权利要求6所述的数据传输装置，其特征在于，所述处理模块还用于：The data transmission device according to claim 6, wherein the processing module is further configured to:
    对所述波束赋形后的数据进行离散傅里叶变换、循环前缀添加处理。The beam-formed data is subjected to discrete Fourier transform and cyclic prefix addition processing.
  9. 根据权利要求6所述的数据传输装置，其特征在于，所述获取模块具体用于：The data transmission device according to claim 6, wherein the acquisition module is specifically configured to:
    接收所述N个射频拉远单元分别发送的所述终端的上行探测信号或上行导频信号；Receiving an uplink sounding signal or an uplink pilot signal of the terminal respectively sent by the N radio frequency remote units;
    所述获取模块还用于：The obtaining module is further configured to:
    接收所述N个射频拉远单元分别发送的所述终端的上行数据信号，或者， 接收合并后的所述终端的上行数据信号。Receiving, by the N radio remote units, uplink data signals of the terminal, or receiving the combined uplink data signals of the terminal.
  10. 根据权利要求6至9中任一项所述的数据传输装置，其特征在于，所述接收质量为接收功率、信噪比、载干比中的任一项或任意多项。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.
  11. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行权利要求1至5任一项所述的方法。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.
  12. 一种通信设备，其特征在于，包括：A communication device, comprising:
    存储器，用于存储程序指令；a memory for storing program instructions;
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行如权利要求1至5任一项所述的方法。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.
  13. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得计算机执行如权利要求1至5任一项所述的方法。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.
PCT/CN2017/119492 2017-02-10 2017-12-28 Data transmission method and device WO2018145529A1 (en)

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