TW201815089A - Large-scale antenna beam transmission method and base station and terminal - Google Patents

Abstract

The invention belongs to the field of wireless communication technology, and particularly relates to a large-scale antenna beam transmission method, base station, and terminal, which are used to improve transmission efficiency and reliability in large-scale antenna beam transmission, and include: the base station transmits from multiple downlinks Among the beams, a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal are determined; the base station determines a first beamforming method corresponding to the data channel between the terminals, and carries the first beamforming method in the control signal through The control channel is sent to the terminal, so that the terminal receives the signal sent by the base station according to the first beamforming method. The first beamforming method is to beamform the signal of the data channel through the main downlink transmission beam and / or at least one auxiliary downlink beam. shape.

Description

   Large-scale antenna beam transmission method, base station and terminal   

The invention belongs to the field of wireless communication technology, and particularly relates to a large-scale antenna beam transmission method, a base station, and a terminal.

In order to further improve the Multiple-Input Multiple-Output (MIMO) technology, a large-scale antenna technology is introduced into a mobile communication system. For the base station, a fully-digitized large-scale antenna can have up to 128/256/512 antenna elements and up to 128/256/512 transceiver units, and each antenna element is connected to a transceiver unit. By sending pilot signals with up to 128/256/512 antenna ports, the terminal measures channel status information and returns. For the terminal, an antenna array with up to 32/64 antenna elements can also be configured. Through beamforming on both sides of the base station and the terminal, a huge beamforming gain is obtained to compensate for signal attenuation caused by path loss. Especially in high-frequency communication, such as at 30GHz, the path loss makes the coverage of wireless signals extremely limited. Through large-scale antenna technology, the coverage of wireless signals can be extended to a practical range.

In the prior art, when large-scale antenna beam transmission is performed, a beamforming correspondence between a base station and a terminal is generally determined through a training process. The general process is as follows:

1) The base station sends a downlink beam training signal. The base station has multiple candidate downlink transmission beams. Each candidate downlink transmission beam corresponds to a set of beamforming weights. The base station can transmit a beam training signal for each candidate downlink transmission beam, that is, the beam of each candidate downlink transmission beam. The training signal is sent after being shaped by the beamforming weight corresponding to the beam.

2) The terminal receives the downlink beam training signal sent by the base station, and selects a recommended downlink transmission beam by measuring the beam training signal. For example, the terminal may select the candidate downlink transmission beam with the strongest receiving power of the training signal as the recommended beam.

3) For each recommended downlink transmission beam, the terminal determines a corresponding downlink reception beam.

4) The terminal reports the related information of the recommended downlink transmission beam to the base station. The relevant information includes the identification of the recommended downlink transmission beam (such as the number of the downlink transmission beam), and the strength information of the training signal (such as the received signal power level) of the downlink transmission beam received by the terminal.

5) The base station determines the selected downlink transmission beam according to the related information of the downlink transmission beam reported by the terminal.

Through the above process, it is possible to determine the corresponding one or more downlink transmission beams for a terminal and determine the downlink reception beams on the terminal side. In the data transmission process, the base station selects one of the determined multiple downlink transmission beams. The downlink beam sends a signal to the terminal and cannot be changed after the selected downlink beam is determined.

The problem with the above process is that after the multiple downlink transmission beams corresponding to the terminal are determined, each time the base station sends data to the terminal, it can only select one of the multiple downlink transmission beams for signal transmission, and the selected downlink The transmit beam cannot be changed. When a large number of signals need to be transmitted, it will cause a serious performance bottleneck and the reliability is not very high.

In summary, the large-scale antenna beam transmission methods in the prior art have technical problems of low reliability and low transmission efficiency.

Embodiments of the present invention provide a large-scale antenna beam transmission method, base station, and terminal, which are used to improve transmission efficiency and reliability in large-scale antenna beam transmission.

In a first aspect, an embodiment of the present invention provides a large-scale antenna beam transmission method, including: a base station determining a primary downlink transmission beam and at least one secondary downlink transmission beam for a terminal from a plurality of downlink transmission beams; The configuration information of the downlink transmission beam and the configuration information of the at least one auxiliary downlink transmission beam are sent to the terminal; the base station determines a first beam forming method corresponding to a signal of a data channel between the terminals, and the first beam forming The shaping method is to beamform the signal of the data channel through the main downlink transmission beam and / or the at least one auxiliary downlink beam; the base station carries the indication information of the first beamforming method in the control signal, and The control channel is sent to the terminal, so that the terminal receives a signal sent by the base station through the data channel according to the first beamforming mode.

Optionally, the base station determining a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams, including: the base station sending a training signal to the terminal according to the multiple downlink transmission beams, so that Enabling the terminal to determine the signal strength information of the plurality of downlink transmission beams and send it to the base station; the base station determines, from the plurality of downlink transmission beams, to target the base station according to the received signal strength information of the plurality of downlink transmission beams. The terminal ’s primary downlink transmission beam and at least one secondary downlink transmission beam; or the base station receives the recommended downlink transmission beam information reported by the terminal, and determines the primary downlink transmission beam and at least the terminal based on the recommended downlink transmission beam information. A secondary downlink transmit beam; or the base station determines signal strength information of multiple uplink receive beams based on the received data signal and / or control signal of the terminal; the base station determines signal strength of multiple uplink receive beams according to the determined Information to determine the primary downlink transmit beam and at least one secondary A transmission beam; or the base station selects at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and uses the downlink CSI-RS transmission beam to send CSI- to the terminal RS signal; the base station receives channel state information determined for the CSI-RS signal sent by the terminal, and determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal according to the channel state information.

Optionally, receiving, by the base station, channel state information determined for the CSI-RS signal sent by the terminal and determining the primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal according to the channel state information includes: The base station receives the channel state information determined for each CSI-RS signal sent by the terminal, and according to the channel state information, the downlink CSI-RS corresponding to the CSI-RS signal with the best channel quality in the channel state information The transmission beam is used as the main downlink beam, and one or more downlink CSI-RS transmission beams other than the downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality in the channel state information are used as the at least One auxiliary downlink beam.

Optionally, the base station carries the first beamforming method in the control signal, and after the control signal is beamformed by the second beamforming method, the base station sends the control signal to the terminal through the control channel, including: The base station configures N control resource subsets for the terminal, where one control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam; the base station will The configuration information of the N control resource subsets is sent to the terminal, so that the terminal monitors the N control resource subsets; the base station carries the indication information of the first beamforming mode in the control signal Sending to the terminal through one or more control resource subsets in the N control resource subsets, so that the terminal obtains the control signal in the control signal when it detects that an effective control channel exists in the N control resource subsets. In the first beam forming mode, the effective control channel refers to whether a control signal of the control channel is sent to the terminal or a terminal group where the terminal is located.

Optionally, before the base station carries the indication information of the first beamforming method in a control signal, and before sending the information to the terminal through the control channel, the base station further includes: the base station determines control of the control channel with the terminal. A second beamforming manner corresponding to the signal, the second beamforming manner is to beamform the control signal of the control channel by using the primary downlink transmission beam and / or the at least one secondary downlink beam; The indication information of the first beamforming method is carried in the control signal and sent to the terminal through the control channel, including: the base station carrying the indication information of the first beamforming method in the control signal, and passing the second beam After the beamforming is performed on the control signal in a shaping manner, the control signal is sent to the terminal through the control channel.

Optionally, the base station updates the first beamforming method according to the channel state information corresponding to the primary downlink transmission beam and the channel state information corresponding to the at least one secondary downlink transmission beam returned by the terminal; or When continuously receiving a HARQ non-response NACK feedback from the terminal or receiving no feedback from the terminal, the first beamforming method is updated according to the primary downlink transmission beam and the at least one secondary downlink transmission beam. .

Optionally, the base station sends CSI-RS signal configuration information to the terminal, and the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS signal downlink transmission beam is the master One of the downlink transmission beam and the at least one auxiliary downlink transmission beam; the base station sends a CSI-RS signal using the CSI-RS signal downlink transmission beam; the base station receives a channel measured by the terminal based on the CSI-RS signal Status information.

Optionally, the base station sends CSI process configuration information to the terminal, where the CSI process configuration information includes association indication information of one or more CSI-RS signals; the base station receives the terminal according to the CSI process with the terminal Channel state information obtained by measuring one or more associated CSI-RS signals.

Optionally, the first beamforming method includes part or all of the following: beamforming a data channel signal through a primary downlink transmission beam, beamforming a data channel signal through a secondary downlink transmission beam, and using a primary downlink The transmitting beam and the auxiliary downlink beam perform space division multiplexing beamforming on the signal of the data channel, and perform the diversity beamforming on the signal of the data channel through the main downlink transmitting beam and the auxiliary downlink beam.

Optionally, the second beamforming method includes part or all of the following: beamforming the control signal of the control channel through the primary downlink transmission beam, beamforming the control signal of the control channel through the secondary downlink transmission beam, and The primary downlink transmit beam and the secondary downlink beam perform diversity beamforming on the control signals of the control channel.

In a second aspect, an embodiment of the present invention provides a large-scale antenna beam transmission method, including: a terminal receiving configuration information of a primary downlink transmission beam and configuration information of at least one secondary downlink transmission beam sent by a base station, determining the primary downlink transmission beam and At least one auxiliary downlink transmission beam; the terminal receiving a control signal sent by the base station, the control signal including a first beam forming method corresponding to a signal of a data channel between the base station and the terminal, the first beam forming The shaping method is to beamform the signal of the data channel through the primary downlink transmission beam and / or the at least one auxiliary downlink beam; the terminal receives the signal sent by the base station through the data channel according to the first beamforming method. .

Optionally, the receiving the control signal sent by the base station includes: receiving, by the terminal, the control signal transmitted by the base station through a control channel between the base station and the second beamforming method, and the first The two-beam forming method is to beamform the control signal of the control channel by using the main downlink transmission beam and / or the at least one auxiliary downlink beam.

Optionally, the terminal receives CSI-RS signal configuration information sent by the base station, and the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS signal downlink transmission beam is the master One of the downlink transmission beam and the at least one auxiliary downlink transmission beam; the terminal determines a CSI-RS downlink reception beam corresponding to the CSI-RS signal downlink transmission beam, and receives the base station transmission according to the CSI-RS downlink reception beam CSI-RS signal; the terminal obtains a channel estimation value according to the received CSI-RS signal, and obtains channel state information according to the channel estimation value and sends the channel state information to the base station.

Optionally, the method further includes: the terminal receiving CSI process configuration information sent by the base station, the CSI process configuration information including association instruction information of one or more CSI-RS signals; and the terminal according to the association instruction information, Determine one or more CSI-RS signals associated with each process; the terminal obtains channel estimates based on the received CSI-RS signals, and obtains channel status information based on the channel estimates and sends them to the base station, including: the The terminal obtains channel estimation values of one or more CSI-RS signals associated with each process according to the received CSI-RS signals, and the terminal estimates channel values of one or more CSI-RS signals associated with each process. Determine channel status information and feed it back to the base station.

Optionally, the terminal determines channel state information according to channel estimation values of one or more CSI-RS signals associated with each process, and returns the channel state information to the base station. The terminal includes: according to each CSI-RS associated with each process. The channel estimation value of the RS signal determines the channel state information corresponding to each CSI-RS signal, and returns the channel state information corresponding to each CSI-RS signal to the base station; or the terminal associates according to each CSI-RS process The channel estimation value of the CSI-RS signal is determined, and the comprehensive channel state information is determined, and the comprehensive channel state information is fed back to the base station; or the terminal selects according to the channel estimation value of each CSI-RS signal associated with each process. One or more of the CSI-RS signals respectively determine and return channel state information corresponding to each selected CSI-RS signal, and return the identification information of each selected CSI-RS signal to the base station.

Optionally, the terminal receiving the signal of the data channel sent by the base station according to the first beamforming method includes: if the first beamforming method uses the main downlink transmission beam transmission for the data channel, the terminal uses the main beam The downlink receiving beam corresponding to the downlink transmitting beam is used for receiving; or if the first beam forming method is the auxiliary downlink transmitting beam transmission for the data channel, the terminal receives using the downlink receiving beam corresponding to the auxiliary downlink transmitting beam; or if the first The one-beam forming method is that the data channel adopts the primary downlink transmission beam and the secondary downlink beam for space division multiplexing transmission, and the terminal uses the downlink reception beams corresponding to the primary downlink transmission beam and the secondary downlink transmission beam to perform reception; or if the first The one-beam forming method is that the data channel adopts the primary downlink transmission beam and the secondary downlink beam for diversity transmission, and the terminal receives the downlink reception beams corresponding to the primary downlink transmission beam and the secondary downlink transmission beam, respectively.

In cooperation with manufacturers, an embodiment of the present invention provides a large-scale antenna beam transmission method, including: a base station configuring N control resource subsets for a terminal, wherein one control resource subset includes a plurality of resource units for control channel transmission; The base station sends the configuration information of the N control resource subsets to the terminal, and the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; the base station is in the N control resource subsets Send a control signal to the terminal within at least one control resource subset of.

Optionally, the base station sends a control signal to the terminal in one or more control resource subsets of the N control resource subsets, including: the base station controls at least one of the N control resource subsets. The downlink transmission beam corresponding to the resource subset sends the control signal to the terminal.

According to a fourth aspect, an embodiment of the present invention provides a large-scale antenna beam transmission method, including: a terminal receiving configuration information of N control resource subsets sent by a base station, wherein one control resource subset includes a plurality of control channel transmissions A resource unit, the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; the terminal receives a control signal sent by the base station through at least one control resource subset in the N control resource subsets .

Optionally, the terminal receiving the control signal sent by the base station through at least one control resource subset in the N control resource subsets includes: the terminal according to the indication of the downlink transmission beam corresponding to the at least one control resource subset. Information to determine a downlink receive beam that receives the control resource subset; the terminal uses the downlink receive beam to receive control signals within the control resource subset.

In a fifth aspect, an embodiment of the present invention provides a base station, including: a processing unit, configured to determine a primary downlink transmission beam and at least one secondary downlink transmission beam for a terminal from a plurality of downlink transmission beams; A first beamforming method corresponding to the signal of the data channel, the first beamforming method is to beamform the signal of the data channel by using the primary downlink transmission beam and / or the at least one secondary downlink beam; a transceiver unit, Configured to send the configuration information of the primary downlink transmission beam and the configuration information of the at least one secondary downlink transmission beam to the terminal; carry the indication information of the first beam forming mode in a control signal, and send the control information to the terminal through a control channel; The terminal causes the terminal to receive a signal sent by the base station through the data channel according to the first beamforming manner in the control signal.

Optionally, when the processing unit determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from multiple downlink transmission beams, the processing unit is specifically configured to: according to the multiple downlink transmission beams, send to the terminal through the transceiver unit through the transceiver unit. Sending a training signal, so that the terminal determines the signal strength information of the multiple downlink transmission beams and sends it to the base station; and sends from the multiple downlink transmissions according to the signal strength information of the multiple downlink transmission beams received by the transceiver unit Among the beams, a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal are determined; or the recommended downlink transmission beam information reported by the terminal is received by the transceiver unit; and the target for the terminal is determined based on the recommended downlink transmission beam information. A primary downlink transmission beam and at least one secondary downlink transmission beam; or determining signal strength information of multiple uplink receiving beams according to a data signal and / or a control signal of the terminal received by the transceiver unit; and according to the determined multiple uplink receiving beams Signal strength information to determine the main downlink transmission wave for the terminal Beam and at least one secondary downlink transmission beam; or selecting at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and using the downlink CSI-RS transmission through the transceiver unit The beam sends a CSI-RS signal to the terminal; the channel state information determined for the CSI-RS signal sent by the terminal is received by the transceiver unit, and the main downlink transmission beam and at least one for the terminal are determined according to the channel state information. Secondary downlink transmit beam.

Optionally, the processing unit receives the channel state information determined for the CSI-RS signal sent by the terminal through the transceiver unit, and determines a primary downlink transmission beam and at least one secondary downlink transmission for the terminal according to the channel state information. When the beam is used, it is specifically used to receive the channel state information determined by the terminal for each CSI-RS signal sent by the terminal, and according to the channel state information, the CSI- with the best channel quality in the channel state information. The downlink CSI-RS transmission beam corresponding to the RS signal is used as the main downlink beam, and one or more of the downlink CSI except the downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality in the channel state information. -RS transmission beam, as the at least one auxiliary downlink beam.

Optionally, the transmitting and receiving unit carries the indication information of the first beamforming method in a control signal, and when sending to the terminal by using the control channel, it is specifically configured to configure the N control resource subsets for the terminal, where A control resource subset includes a plurality of resource units for control channel transmission, and a control resource subset is associated with a downlink transmission beam; the configuration information of the N control resource subsets is sent to the terminal, so that the The terminal monitors the N control resource subsets; carries the indication information of the first beamforming mode in the control signal, and sends the information to the control signal subset through one or more control resource subsets in the N control resource subsets. A terminal, so that when the terminal detects that there is an effective control channel in the N control resource subsets, the terminal obtains the first beamforming mode in the control signal, where the effective control channel refers to the control signal of the control channel is sent to The terminal is also sent to the terminal group where the terminal is located.

Optionally, the processing unit is further configured to: before carrying the indication information of the first beamforming mode in the control signal through the transceiver unit, and sending the indication information to the terminal through the control channel, determine the communication between the terminal and the terminal. A second beamforming manner corresponding to a control signal of the control channel, the second beamforming manner is to beamform the control signal of the control channel by using the primary downlink transmission beam and / or the at least one secondary downlink beam; the The transceiver unit carries the indication information of the first beam forming method in the control signal, and when sending to the terminal by using the control channel, is specifically used to carry the indication information of the first beam forming method in the control signal, After beamforming the control signal in the second beamforming manner, the control signal is sent to the terminal through the control channel.

Optionally, the processing unit is further configured to update the channel status information corresponding to the primary downlink transmission beam and the channel status information corresponding to the at least one secondary downlink transmission beam received by the terminal through the transceiver unit. The first beam forming method; or when the hybrid automatic retransmission request HARQ non-response NACK feedback sent by the terminal is continuously received through the transceiver unit, or the terminal's feedback is not received, according to the main downlink transmission beam and the at least one The auxiliary downlink transmission beam is updated with the first beamforming mode.

Optionally, the transceiver unit is further configured to send CSI-RS signal configuration information to the terminal, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS signal is downlink The transmission beam is one of the primary downlink transmission beam and the at least one secondary downlink transmission beam; the CSI-RS signal is transmitted using the CSI-RS signal downlink transmission beam; and the channel state obtained by the terminal based on the CSI-RS signal is measured. Information.

Optionally, the transceiver unit is further configured to: send the CSI process configuration information to the terminal, where the CSI process configuration information includes association indication information of one or more CSI-RS signals; and receive the terminal according to Channel state information obtained by measuring one or more CSI-RS signals associated with a CSI process.

Optionally, the first beamforming method includes part or all of the following: beamforming a data channel signal through a primary downlink transmission beam, beamforming a data channel signal through a secondary downlink transmission beam, and using a primary downlink The transmitting beam and the auxiliary downlink beam perform space division multiplexing beamforming on the signal of the data channel, and perform the diversity beamforming on the signal of the data channel through the main downlink transmitting beam and the auxiliary downlink beam.

Optionally, the second beamforming method includes part or all of the following: beamforming the control signal of the control channel through the primary downlink transmission beam, beamforming the control signal of the control channel through the secondary downlink transmission beam, and The primary downlink transmit beam and the secondary downlink beam perform diversity beamforming on the control signals of the control channel.

According to a sixth aspect, an embodiment of the present invention provides a terminal, including: a transceiver unit configured to receive configuration information of a primary downlink transmission beam and configuration information of at least one secondary downlink transmission beam sent by a base station; and receive a control signal sent by the base station , The control signal includes a first beamforming manner corresponding to a signal of a data channel between the base station and the terminal, and the first beamforming manner is through the main downlink transmission beam and / or the at least one auxiliary downlink beam Beamforming the signal of the data channel; a processing unit configured to determine the primary downlink transmission according to the configuration information of the primary downlink transmission beam and the configuration information of at least one secondary downlink transmission beam received by the base station and received by the transceiver unit A beam and at least one auxiliary downlink transmission beam; receiving a signal sent by the base station through the data channel through the transceiver unit according to the first beamforming mode.

Optionally, when receiving and receiving the control signal sent by the base station, the transceiver unit is specifically configured to: receive the control signal that is beam-formed by the second beam-forming method and sent by the base station through a control channel with the terminal, The second beamforming method is to beamform the control signal of the control channel by using the main downlink transmission beam and / or the at least one auxiliary downlink beam.

Optionally, the transceiver unit is further configured to receive CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS signal The downlink transmission beam is one of the main downlink transmission beam and the at least one secondary downlink transmission beam; the processing unit is further configured to determine a CSI-RS downlink reception beam corresponding to the CSI-RS signal downlink transmission beam, and The CSI-RS downlink receiving beam receives the CSI-RS signal sent by the base station through the transceiver unit; obtains a channel estimation value according to the CSI-RS signal received by the transceiver unit, and obtains channel state information according to the channel estimation value Send to the base station through the transceiver unit.

Optionally, the transceiver unit is further configured to: receive CSI process configuration information sent by the base station, where the CSI process configuration information includes association indication information of one or more CSI-RS signals; and determine according to the association indication information One or more CSI-RS signals associated with each process; the processing unit obtains a channel estimation value according to the CSI-RS signal received by the transceiver unit, and obtains channel state information according to the channel estimation value and sends it to the transceiver unit through The base station is specifically configured to: obtain channel estimates of one or more CSI-RS signals associated with each process according to the CSI-RS signals received by the transceiver unit; and according to one or more of the processes associated with each process The channel estimation value of the CSI-RS signal determines channel state information and feeds back to the base station through the transceiver unit.

Optionally, when the processing unit determines channel state information according to the channel estimation value of one or more CSI-RS signals associated with each process, and returns the channel state information to the base station through the transceiver unit, the processing unit is specifically configured to: The associated channel estimation value of each CSI-RS signal determines the channel state information corresponding to each CSI-RS signal, and returns the channel state information corresponding to each CSI-RS signal to the base station; or according to each CSI -The channel estimation value of the CSI-RS signal associated with the RS process, to determine the comprehensive channel state information, and feed back the integrated channel state information to the base station; or according to the channel estimation value of each CSI-RS signal associated with each process , Selecting one or more of the CSI-RS signals, respectively determining and returning channel state information corresponding to each selected CSI-RS signal, and returning identification information of each selected CSI-RS signal to the base station.

Optionally, when the processing unit receives the signal of the data channel sent by the base station through the transceiver unit according to the first beamforming mode, the processing unit is specifically configured to: if the first beamforming mode uses the primary downlink transmission for the data channel For beam transmission, the downlink receiving beam corresponding to the primary downlink transmission beam is used to receive through the transceiver unit; or if the first beamforming method uses the secondary downlink transmission beam for data channel transmission, the downlink reception corresponding to the secondary downlink transmission beam is used. The beam is received by the transceiver unit; or if the first beamforming method uses the primary downlink transmission beam and the secondary downlink beam for space division multiplexing transmission for the data channel, the primary downlink transmission beam and the secondary downlink transmission beam are used respectively. The downlink receiving beam is received by the transceiver unit; or if the first beam forming method is the data channel using the primary downlink transmission beam and the secondary downlink beam for diversity transmission, the downlink corresponding to the primary downlink transmission beam and the secondary downlink transmission beam is used respectively. The receiving beam is received by the transceiver unit.

In a seventh aspect, an embodiment of the present invention provides a base station including: a processing unit configured to configure N control resource subsets for a terminal, wherein one control resource subset includes a plurality of resource units for control channel transmission; A unit configured to send configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; at least in the N control resource subsets Within a subset of control resources, control signals are sent to the terminal.

Optionally, when sending and receiving a control signal to the terminal in at least one control resource subset of the N control resource subsets, the transceiver unit is specifically configured to: at least one control resource in the N control resource subsets The downlink transmission beam corresponding to the subset sends the control signal to the terminal.

According to an eighth aspect, an embodiment of the present invention provides a terminal, including: a transceiver unit configured to receive configuration information of N control resource subsets sent by a base station, wherein one control resource subset includes a plurality of control channel transmissions; A resource unit, the configuration information including indication information of a downlink transmission beam corresponding to each control resource subset; and receiving a control signal sent by the base station through at least one control resource subset in the N control resource subsets.

Optionally, the terminal further includes a processing unit, which is configured to determine to receive the downlink receiving beam of the control resource subset according to the indication information of the downlink transmitting beam corresponding to the at least one control resource subset; the transceiver unit receives When the base station sends a control signal in at least one control resource subset of the N control resource subsets, the base station is specifically configured to receive the control signal in the control resource subset by using the downlink receiving beam determined by the processing unit.

In a ninth aspect, an embodiment of the present invention provides a base station including a memory, a processor, and a transceiver; wherein the memory is used to store a computer-readable program; the processor completes the program by running the program in the memory. The method provided by the first aspect is a method performed by a base station in a large-scale antenna beam transmission method; the transceiver is used to receive and send data under the control of a processor.

In a tenth aspect, a terminal according to an embodiment of the present invention includes a memory, a processor, and a transceiver; wherein the memory is used to store a computer-readable program; the processor completes the second aspect by running the program in the memory Provided is a method performed by a terminal in a large-scale antenna beam transmission method; a transceiver is used to receive and send data under the control of a processor.

According to an eleventh aspect, a base station according to an embodiment of the present invention includes a memory, a processor, and a transceiver; wherein the memory is used to store a computer-readable program; the processor completes the program by running the program in the memory A method implemented by a base station in a large-scale antenna beam transmission method provided by a third-party vendor; the transceiver is used to receive and send data under the control of a processor.

In a twelfth aspect, a terminal according to an embodiment of the present invention is characterized in that the terminal includes a memory, a processor, and a transceiver; wherein the memory is used to store a computer-readable program; the processor runs the program in the memory to The method performed by the terminal in the large-scale antenna beam transmission method provided by the fourth aspect is completed; the transceiver is used to receive and send data under the control of the processor.

In the embodiment of the present invention, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams; the base station determines a first beam forming method corresponding to a signal of a data channel between the terminals. , Carrying the first beamforming method in the control signal and sending it to the terminal through the control channel, so that the terminal receives the signal sent by the base station through the data channel according to the first beamforming method in the control signal, where the first beam The forming method is to beamform the signal of the data channel through the main downlink transmission beam and / or at least one auxiliary downlink beam. It can be seen that when the base station sends control signals and data signals to the terminal, the beamforming can be flexibly selected. The method performs beamforming on signals, which improves the efficiency of data transmission and enhances the reliability of data transmission.

201-208, 301-305‧‧‧ steps

101‧‧‧Base Station

102, 103, 104‧‧‧ terminals

501, 601, 701, 801‧‧‧ processing units

502, 602, 702, 802‧‧‧ transceiver unit

In order to explain the technical solutions in the embodiments of the present invention more clearly, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can obtain other drawings according to these drawings without paying creative labor.

FIG. 1 is a schematic diagram of a system architecture applicable to an embodiment of the present invention; FIG. 2 is a flowchart of a large-scale antenna beam transmission method according to an embodiment of the present invention; and FIG. 3 is a flowchart of a large-scale antenna beam transmission method according to an embodiment of the present invention FIG. 4 is a schematic diagram of a control resource subset provided by an embodiment of the present invention; FIG. 5 is a schematic diagram of a base station provided by an embodiment of the present invention; FIG. 6 is a schematic diagram of a terminal provided by an embodiment of the present invention; FIG. 8 is a schematic diagram of a terminal provided by an embodiment of the present invention.

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following describes the embodiments of the present invention in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of them. Examples. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: GSM (Global System of Mobile Communication) system, CDMA (Code Division Multiple Access) system, and WCDMA (Wideband Code Division Multiple Access (General Packet Radio Service) system, LTE (Long Term Evolution) system, LTE FDD (Frequency Division Duplex) system, LTE TDD (Time Division Duplex), UMTS (Universal Mobile Telecommunication System), WiMAX (Worldwide Interoperability for Microwave Access) communication system, and future 5G communication systems, etc. .

FIG. 1 exemplarily illustrates a schematic diagram of a system architecture applicable to the embodiment of the present invention. As shown in FIG. 1, the system architecture applicable to the embodiment of the present invention includes a base station 101, a terminal 102, a terminal 103, and a terminal 104, which are wirelessly connected. .

Any one of the terminal 102, the terminal 103, and the terminal 104 may communicate with one or more core networks via a RAN (Radio Access Network, radio access network). The terminal may refer to a UE (User Equipment, user equipment, Access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and a wireless Communication-enabled handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and terminal devices in future 5G networks.

The base station 101 may be a device for communicating with a terminal, for example, it may be a BTS (Base Transceiver Station) in a GSM system or CDMA, or an NB (NodeB, base station) in a WCDMA system. It may be an eNB (Evolutionary Node B, evolved base station), etc. in the LTE system.

Beamforming is a signal preprocessing technology based on an antenna array. Beamforming can produce a directional beam by adjusting the weighting coefficients of each array element in the antenna array, which can obtain a significant array gain. Therefore, beamforming technology has great advantages in terms of expanding coverage, improving edge throughput, and interference suppression.

The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

As shown in FIG. 2, a large-scale antenna beam transmission method provided by an embodiment of the present invention includes: Step 201: A base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for a terminal from a plurality of downlink transmission beams; Step 202: The base station sends the configuration information of the primary downlink transmission beam and the configuration information of at least one secondary downlink transmission beam to the terminal. Step 203: The terminal receives the configuration information of the primary downlink transmission beam and at least one secondary downlink transmission beam sent by the base station. Configuration information to determine the primary downlink transmission beam and at least one secondary downlink transmission beam; step 204, the base station determines a first beamforming method corresponding to a signal of a data channel between the terminals, and the first beamforming method is Beamforming the signal of the data channel through the main downlink transmission beam and / or the at least one auxiliary downlink beam; step 205, the base station carries the indication information of the first beamforming mode into the control signal, and passes the control channel Send to the terminal; step 206, the terminal receives the control signal sent by the base station, according to the control The first beamforming method in the number is to determine that the signal is received through the first beamforming method; step 207, the base station sends the signal to the terminal through the data channel through the first beamforming method; step 208, The terminal receives a signal in a first beamforming manner.

In the above step 201, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for a terminal, and the specific methods are at least the following:

Method 1: The base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal by sending a training signal to the terminal.

Training process:

1) The base station sends a downlink beam training signal to the terminal. Base station shared Candidate downlink transmit beams, each downlink beam corresponds to a set of beamforming weights, and the transmit beamforming weights of the nth beam are , Where K is the number of beamformed antenna elements, which can be smaller than the number of antenna elements of the base station. The base station may transmit a downlink beam training signal for each candidate downlink transmission beam. For example Downlink transmit beams, the base station can send Downlink beam training signals. This The downlink beam training signals can be TDM (Time Division Multiplexing, Time Division Multiplexing), FDM (Frequency Division Multiplexing, Frequency Division Multiplexing), CDM (Code Division Multiplexing, Code Division Multiplexing), or various multiplexing methods. combination. For example, in a system based on OFDM (Orthogonal Frequency Division Multiplexing), Training signals can be occupied OFDM symbols, each training signal occupies 1 OFDM symbol.

The training signal of each downlink transmission beam is sent after being shaped by the beamforming weight corresponding to the beam. "Transmitting with a beam", "Transmitting on a beam", "Using a beam transmission", "Through a beam forming transmission", etc. that appear in the subsequent description process all refer to the beam forming of the signal with the beam The weights are emitted from the physical antenna after shaping. Assuming that the signal to be transmitted on a resource unit is s, the signal after forming with the nth beam is: y = [ y ₁ y ₂ … y _K ] ^T = W _n s , where y _k will be mapped to the antenna element issued on k .

The beam training signal is transmitted periodically or aperiodically.

2) The terminal receives the downlink beam training signal sent by the base station, and obtains signal strength information of each downlink beam training signal by measuring the downlink beam training signal.

The terminal reports the information related to the downlink transmission beam to the base station. The relevant information includes the identification of the downlink transmission beam, such as the number of the downlink transmission beam. According to different multiplexing modes of the downlink beam / beam training signal, the information of the downlink transmission beam fed back by the terminal may be different. For example, the downlink beam training signal is time-division multiplexed on different OFDM symbols or sub-frames, and the terminal measures and returns downlink time information. For another example, the downlink beam-imposed training signals are multiplexed on different frequency resources, and the terminal measures and returns downlink frequency information. The information related to the downlink transmission beam may further include strength information of the downlink transmission beam training signal received by the terminal, such as the received signal power level.

3) The base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from the multiple downlink transmission beams according to the received signal strength information of the multiple downlink transmission beams.

For example, the base station uses the corresponding downlink transmission beam with the strongest signal strength as the primary downlink transmission beam, and selects M secondary transmission beams from the downlink transmission beams other than the primary downlink transmission beam, where M is greater than or equal to 1 .

Through the above steps, a primary downlink transmission beam and at least one secondary downlink transmission beam can be determined.

Method 2: The base station receives the recommended downlink transmission beam information reported by the terminal, and determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal based on the recommended downlink transmission beam information.

In step 2) of the training process of the first method, the terminal may further select a recommended downlink transmission beam according to the signal strength information of each downlink beam training signal. For example, the terminal may select the downlink transmission beam with the strongest receiving power of the training signal as the recommended downlink transmission beam.

The terminal then sends the recommended downlink transmission beams to the base station, and sends the signal strength information corresponding to these recommended downlink transmission beams to the base station. The base station determines a primary downlink transmission beam and at least one from the recommended downlink transmission beams. Secondary downlink transmit beam.

And, after that, the terminal determines a corresponding downlink receiving beam for each recommended downlink transmitting beam (of course, it can also be a corresponding downlink receiving beam for each of the downlink transmitting beams, instead of being limited to the recommended downlink. Transmit beam).

In addition, for one downlink beam training signal, the terminal may also try to receive each downlink receiving beam separately, and select the downlink receiving beam with the strongest received signal power as the downlink receiving beam corresponding to the downlink transmitting beam.

Method 3: The base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal based on the reciprocity of the uplink and downlink signals.

The base station determines signal strength information of multiple uplink receiving beams according to the received data signal and / or control signal of the terminal, and determines the primary downlink transmission beam for the terminal according to the determined signal strength information of the multiple uplink receiving beams. And at least one secondary downlink transmit beam.

In the system where the reciprocity of the uplink and downlink channels is established, there is a correspondence between the base station for the uplink receiving beam and the downlink transmitting beam (specifically, the weight of the uplink receiving beam and the downlink transmitting beam) of the same terminal. Relationship, and the correspondence relationship is known to the base station. The base station receives the data signal and / or control signal sent by the terminal, determines the uplink receiving beam, and then determines the corresponding downlink transmitting beam (determines the weight of the downlink transmitting beam) based on the correspondence between the channel reciprocity and the uplink and downlink beam.

Specifically, the base station may select the downlink transmit beam corresponding to the uplink receive beam with the highest uplink signal strength as the main downlink transmit beam, and select the downlink transmit beam corresponding to one or more uplink receive beams with the highest intensity from the remaining uplink receive beams. As a secondary downlink transmission beam.

Method four: The base station determines the primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal based on the channel state information of the terminal feedback during the CSI-RS signal feedback process.

The following is a feedback process of the CSI-RS (Channel state information reference signals) provided by the embodiment of the present invention as follows:

1.CSI-RS signal transmission process

1) The base station determines at least two downlink CSI-RS transmission beams. The identified methods can be:

a) The base station selects based on the downlink transmission beam related information reported by the terminal received during the above training process. For example, if the related information of the downlink transmission beam includes intensity information of the transmission beam, the base station may select several beams with the highest intensity as the downlink CSI-RS transmission beam.

b) The base station selects the downlink CSI-RS transmission beam based on the reciprocity of the uplink and downlink channels. In the system where the reciprocity of the uplink and downlink channels is established, the base station has a correspondence relationship between the uplink receive beam and the downlink transmit beam (the weight of the uplink receive beam and the downlink transmit beam) of the same terminal, and the The correspondence is known by the base station. The base station receives the data signal and / or control signal sent by the terminal, determines the uplink receiving beam, and then determines the corresponding downlink transmitting beam (determines the weight of the downlink transmitting beam) based on the correspondence between the channel reciprocity and the uplink and downlink beam. The base station may select the downlink transmission beams corresponding to the several uplink reception beams with the highest uplink signal strength as the downlink CSI-RS transmission beams.

2) The base station sends a CSI-RS signal. The base station sends a CSI-RS signal on each downlink CSI-RS transmission beam. Each CSI-RS signal includes at least one antenna port. Sending a CSI-RS on a downlink beam means that the signal of each antenna port of the CSI-RS signal is sent from the antenna after the downlink beam is formed.

3) The base station notifies the terminal of the downlink transmission beam related information corresponding to each CSI-RS signal. The downlink transmission beam related information may be an identifier of a downlink transmission beam of the CSI-RS signal, and the number of the transmission beam is as follows. The methods of notification include:

a) The base station includes information about the downlink transmission beam in the configuration information of each CSI-RS, such as the identifier of the downlink transmission beam. The configuration information of the CSI-RS can be transmitted through higher layer signaling, or can be transmitted through physical layer signaling, such as in DCI (Downlink Control Information).

b) The base station notifies the terminal of the related information of the downlink CSI-RS transmission beam through an independent signaling process (indicating that it is independent of the CSI-RS configuration process). The base station further includes indication information in the configuration information of each CSI-RS, indicating which downlink CSI-RS transmission beam is used for transmission by each CSI-RS. For example, if the downlink CSI-RS transmission beam includes two beams, the configuration information of the CSI-RS may include 1 bit to indicate whether the beam is transmitted by the downlink CSI-RS transmission beam 0 or the downlink CSI-RS transmission beam 1.

4) The terminal receives configuration information of each CSI-RS, receives downlink beam related information of each CSI-RS signal, and determines a downlink receive beam of each CSI-RS.

The terminal has determined the downlink receiving beam corresponding to each downlink transmitting beam during the training process. The terminal learns the downlink transmission beam of each CSI-RS from the received information, and then determines the downlink reception beam of each CSI-RS according to the correspondence between the downlink transmission beam and the downlink reception beam.

5) The terminal uses each CSI-RS downlink receiving beam to receive the CSI-RS signal, performs channel estimation, and calculates channel state information based on the channel estimation value. The channel state information may include CQI (Channel Quality Indicator, channel quality indicator), PMI (Precoding Matrix Indicator), RI (rank indication, rank indication), and other parameters.

There are the following possible ways to calculate the channel state information: a) each CSI-RS is calculated independently, and the terminal calculates the channel state information independently according to the channel value estimated by each CSI-RS; b), multiple CSI-RS channel estimates are calculated. For example, suppose that the data transmission from the base station to the terminal is multi-stream space division multiplexing. Each data flow is sent from a downlink CSI-RS transmission beam. Due to interference between multiple data flows, the terminal calculates each data flow. CQI, PMI, RI and other information need to calculate the interference caused by other data streams, so the channel estimation results of multiple CSI-RSs need to be integrated for calculation.

As another example, assuming that the data transmission from the base station to the terminal is multi-stream diversity transmission, a data flow is sent from multiple downlink CSI-RS transmission beams. The terminal needs to calculate multiple information when calculating the CQI, PMI, RI and other information of the data flow The combined results sent by multiple CSI-RS transmission beams need to be calculated by integrating the channel estimation results of multiple CSI-RSs.

2.CSI-RS feedback process

Method 1: The CSI feedback process may be performed by using multiple CSI processes (each downlink CSI-RS transmission corresponds to one CSI process).

1) The base station configures multiple CSI processes for the terminal. Each CSI process is associated with one CSI-RS (one of multiple CSI-RSs in the CSI-RS transmission process). The way of association may be to include a CSI-RS identifier in the configuration message of the CSI process, and the identifier points to a CSI-RS described in the CSI-RS transmission process.

2) The terminal receives configuration information of the CSI process, and provides feedback according to the configuration of the CSI process.

The process is that the terminal determines its associated CSI-RS signal according to the configuration information of each CSI process, and then determines the downlink receiving beam of the CSI-RS in the manner described in the CSI-RS transmission process, receives the CSI-RS signal, and calculates the channel status. Information.

3) The terminal returns channel status information to the base station according to the CSI process configuration information. The form of feedback is:

a) The terminal determines the channel state information corresponding to each CSI-RS signal according to the channel estimation value of the CSI-RS signal associated with each process, and returns the channel state information corresponding to each CSI-RS signal to the base station. .

b) The terminal selects one or more of the CSI-RS signals according to a certain criterion according to the channel estimation value of each CSI-RS signal associated with each process, and determines and responds to each selected CSI-RS signal correspondingly. The channel status information of each channel is fed back, and the identification information of each selected CSI-RS signal is fed back to the base station. The selection criteria can be the strongest received signal, or the strongest transmission capacity, or the largest channel capacity, or the best channel quality.

c) The terminal determines comprehensive channel state information according to the channel estimation value of the CSI-RS signal associated with each CSI-RS process, and feeds back the integrated channel state information to the base station.

Method 2: The CSI feedback process can also be performed by a single CSI process.

1) The base station configures a CSI process for the terminal. The CSI process is associated with multiple CSI-RSs (multiple CSI-RSs in a CSI-RS transmission process). The way of association may be to include multiple CSI-RS identifiers in the configuration message of the CSI process, and the identifiers point to one or more CSI-RSs described in the CSI-RS transmission process.

2) The terminal receives configuration information of the CSI process and provides feedback according to the configuration of the CSI process.

The process is that the terminal determines its associated CSI-RS according to the configuration of each CSI process, and then determines the downlink receiving beam of the CSI-RS in the manner described in the CSI-RS transmission process, receives the CSI-RS, and calculates channel state information.

3) The terminal returns channel status information to the base station according to the configuration of the CSI process. The form of feedback is:

a) The terminal determines the channel state information corresponding to each CSI-RS signal according to the channel estimation value of the CSI-RS signal associated with the CSI process, and returns the channel state information corresponding to each CSI-RS signal to the base station.

b) The terminal selects one or more CSI-RS signals according to the channel estimation value of all CSI-RS signals associated with the CSI process, and determines and returns the corresponding channel of each selected CSI-RS signal respectively. Status information, and feedback the selected CSI-RS signal identification information to the base station. The selection criteria can be the strongest received signal, the strongest transmission capacity, the largest channel capacity, or the best channel quality.

c) The terminal determines the integrated channel state information according to the channel estimation value of the CSI-RS signal associated with the CSI process, and feeds back the integrated channel state information to the base station.

The base station receives the channel state information determined for each CSI-RS signal sent by the terminal, and uses the downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality in the channel state information as the main downlink according to the channel state information. The beam is one or more downlink CSI-RS transmission beams other than the downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality in the channel state information, as the auxiliary downlink beam.

In step 202, the base station sends configuration information of the primary downlink transmission beam and configuration information of at least one secondary downlink transmission beam to the terminal.

In step 203, the terminal receives configuration information of the primary downlink transmission beam and configuration information of at least one secondary downlink transmission beam sent by the base station, and determines the primary downlink transmission beam and at least one secondary downlink transmission beam.

In the above step 204, the base station determines a first beamforming manner corresponding to a signal of a data channel between the terminals, and the first beamforming manner is through the main downlink transmission beam and / or the at least one auxiliary downlink beam pair. The data channel signals are beamformed.

The signal of the data channel may be a data signal, a CSI-RS signal, or other signals.

Specifically, the first beamforming method includes some or all of the following:

1). Beamforming the data channel signal through the main downlink transmission beam;

2) Beamforming the data channel signal through the auxiliary downlink transmission beam;

3) Perform space division multiplexing beamforming on the signal of the data channel through the primary downlink transmission beam and the secondary downlink beam; space division multiplexing refers to the beamforming transmission of multiple data on different downlink transmission beams.

4) Diversity beamforming is performed on the signal of the data channel through the primary downlink transmission beam and the secondary downlink beam.

Diversity refers to beamforming transmission on multiple downlink transmission beams by one data flow.

The first beamforming method can be specified in the initial state, for example, specifying the beamforming of the signal of the data channel through the primary downlink transmission beam, or specifying the beamforming of the signal of the data channel through one or more secondary downlink transmission beams. , Or specify space division multiplexing beamforming for the data channel signal through the primary downlink transmit beam and the secondary downlink beam, or specify diversity beamforming for the data channel signal through the primary downlink transmit beam and the secondary downlink beam, etc. .

During the transmission of subsequent signals, the first beamforming method may be updated. Specifically, the base station may use the channel state information corresponding to the primary downlink transmission beam and the channel state information corresponding to at least one secondary downlink transmission beam. , Update the first beamforming method; or the base station continues to receive HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) NACK (Negative Acknowledgement, non-response) from the terminal, or fails to receive the terminal's During feedback, the first beamforming mode is updated according to the primary downlink transmission beam and the at least one secondary downlink transmission beam.

Alternatively, the following method may be used to update the first beamforming method: the terminal receives the CSI-RS signal configuration information sent by the base station, and the CSI-RS signal configuration information includes the CSI-RS signal downlink transmission beam configuration information, and the CSI -The RS signal downlink transmission beam is one of the main downlink transmission beam and the at least one auxiliary downlink transmission beam; the terminal determines a CSI-RS downlink reception beam corresponding to the CSI-RS signal downlink transmission beam, and transmits the downlink according to the CSI-RS The receiving beam receives the CSI-RS signal sent by the base station; the terminal obtains the channel estimation value according to the received CSI-RS signal, and obtains the channel state information according to the channel estimation value and sends it to the base station; the base station uses the obtained channel estimation Value, the first beamforming method is updated.

Alternatively, it may also be selected based on the channel status information fed back by the terminal. For example, the base station receives the channel quality information (CQI) of the CSI process (or CSI-RS) of the primary downlink transmission beam and the secondary CSI process (CSI-RS) of the secondary downlink transmission beam reported by the terminal, and selects a beam with a higher CQI to perform Data transmission.

Alternatively, the base station selects a beam corresponding to the CSI process (or CSI-RS) recommended by the terminal for data transmission.

In some cases, in order to improve the reliability of data transmission, the primary downlink transmission beam and the secondary downlink transmission beam may be selected for transmission diversity transmission, that is, the same data flow is transmitted from the primary downlink transmission beam and the secondary downlink transmission beam at the same time.

In the above step 205, the base station carries the indication information of the first beamforming method in a control signal, and sends it to the terminal through the control channel.

Specifically, there are at least the following two ways to transmit the first beamforming mode to the terminal:

method one

Step A. The base station configures N control resource subsets for the terminal. One control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam. Step B. The base station sends the configuration information of the N control resource subsets to the terminal; step C, the terminal monitors the N control resource subsets; step D, the base station carries the indication information of the first beamforming method to The control signal is sent to the terminal through one or more control resource subsets in the N control resource subsets. Step E. When the terminal detects that an effective control channel exists in the N control resource subsets, it obtains the In the first beam forming method, the effective control channel refers to whether a control signal of the control channel is sent to the terminal or a terminal group where the terminal is located.

Way two

Step A: The base station determines a second beamforming method corresponding to the control signal of the control channel between the terminals. The second beamforming method is to control the channel by using the primary downlink transmission beam and / or at least one secondary downlink beam. The control signal is beamformed. Specifically, the second beamforming method includes some or all of the following: 1) beamforming the data channel signal through the main downlink transmission beam; 2), the data is transmitted through the secondary downlink transmission beam The channel signals are beamformed. 3) Diversity beamforming is performed on the signals of the data channel through the primary downlink transmit beam and the secondary downlink beam.

Step B: The base station carries the indication information of the first beamforming method into the control signal, and after the control signal is beamformed through the second beamforming method, the base station sends the control signal to the terminal through the control channel.

That is, the base station beamforms the control signal through the second beamforming method and sends it to the terminal through the control channel. The control signal includes a beamforming method in which the terminal receives data sent by the base station through the data channel. Specifically, Ground, the control signal includes a first beamforming mode.

The base station sends a control signal including the beamforming mode indication information transmitted by the data channel to the terminal through the control channel. For example, the indication information about the beamforming mode transmitted by the data channel included in the control channel is expressed by using 2 bits, which can be expressed according to the manner described in Table 1.

In the above step 206, the terminal receives the control signal sent by the base station, and determines, according to the first beamforming manner in the control signal, that the manner of receiving the signal is to receive the signal through the first beamforming manner.

In the above step 207, the base station sends a signal to the terminal through the data channel in a first beamforming manner.

In the above step 208, the terminal receives a signal in a first beamforming manner.

The terminal receives a signal sent by the base station. Receive using the first beamforming method.

Possible methods include: a) if the base station beamforms the signal of the data channel through the main downlink transmission beam, the terminal uses the downlink reception beam corresponding to the main downlink transmission beam to receive; b) if the base station passes the auxiliary downlink The transmitting beam performs beamforming on the signal of the data channel, and then the terminal receives the downlink receiving beam corresponding to the auxiliary downlink transmitting beam; c) If the base station spatially divides the signal of the data channel through the main downlink transmitting beam and the auxiliary downlink beam Multiplex beamforming, the terminal uses the downlink receive beam corresponding to the primary downlink transmit beam and the secondary downlink transmit beam to receive; d) if the base station uses the primary downlink transmit beam and the secondary downlink beam to perform diversity beamforming on the data channel signal Shape, the terminal uses the downlink receive beam corresponding to the primary downlink transmit beam and the secondary downlink transmit beam to perform reception.

The terminal receives the signal with the determined downlink receiving beam and performs data demodulation.

In the embodiment of the present invention, through the foregoing steps 201 to 208, the control signal and the data signal are transmitted by using the primary downlink transmission beam and / or the secondary downlink transmission beam, thereby improving the stability of information transmission and improving Efficiency of data transmission.

In the embodiment of the present invention, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams; the base station determines a first beam forming method corresponding to a signal of a data channel between the terminals. , Carrying the first beamforming method in the control signal and sending it to the terminal through the control channel, so that the terminal receives the signal sent by the base station through the data channel according to the first beamforming method in the control signal, where the first beam The forming method is to beamform the signal of the data channel through the main downlink transmission beam and / or at least one auxiliary downlink beam. It can be seen that when the base station sends control signals and data signals to the terminal, the beamforming can be flexibly selected. The method performs beamforming on signals, which improves the efficiency of data transmission and enhances the reliability of data transmission.

Based on the same inventive concept, an embodiment of the present invention provides a large-scale antenna beam transmission method. As shown in FIG. 3, the method includes: Step 301: A base station configures N control resource subsets for a terminal, among which, one control resource subset Including multiple resource units for control channel transmission; step 302, the base station sends configuration information of the N control resource subsets to the terminal, and the configuration information includes an indication of a downlink transmission beam corresponding to each control resource subset Information; step 303, the terminal receives configuration information of the N control resource subsets sent by the base station; step 304, the base station sends a control signal to the terminal in at least one control resource subset of the N control resource subsets; Step 305: The terminal receives a control signal sent by the base station through at least one control resource subset in the N control resource subsets.

The above step 305 may be specifically implemented in the following manner: the terminal determines to receive the downlink receiving beam of the control resource subset according to the downlink sending beam indication information of the at least one control resource subset; the terminal receives the control resource by using the downlink receiving beam Control signals for a subset.

The base station configures N control resource subsets for the terminal. One control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam.

Control resource subsets can be multiplexed with CDM, TDM, or FDM. Preferably, TDM multiplexing is used between control resource subsets.

An example of the control resource subset configuration is shown in Figure 4. FIG. 4 includes two control resource subsets, which are respectively configured on different OFDM symbols.

In the embodiment of the present invention, the base station may send a control signal to the terminal through the control resource subset, and when sending, the base station may send the control signal on one control resource subset or on multiple control resource subsets, thereby achieving Send control signals flexibly, improving transmission efficiency and stability.

Based on the same inventive concept, an embodiment of the present invention further provides a base station, as shown in FIG. 5, including: a processing unit 501, configured to determine a primary downlink transmission beam and at least one secondary downlink for a terminal from a plurality of downlink transmission beams. A transmission beam; determining a first beamforming manner corresponding to a signal of a data channel between terminals, the first beamforming manner is using the primary downlink transmission beam and / or the at least one secondary downlink beam to The signal performs beamforming. The transceiver unit 502 is configured to send the configuration information of the primary downlink transmission beam and the configuration information of the at least one secondary downlink transmission beam to the terminal. The instruction information of the first beamforming method is carried in The control signal is sent to the terminal through a control channel, so that the terminal receives a signal sent by the base station through the data channel according to the first beamforming manner in the control signal.

Optionally, the transceiver unit 502 is specifically configured to send training signals to the terminal according to the multiple downlink transmission beams, so that the terminal determines the signal strength information of the multiple downlink transmission beams and sends the information to the base station; the When the processing unit 501 determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams, the processing unit 501 is specifically configured to send a training signal to the terminal through the transceiver unit 502 according to the multiple downlink transmission beams. To enable the terminal to determine the signal strength information of the multiple downlink transmission beams and send it to the base station; and from the signal strength information of the multiple downlink transmission beams received by the transceiver unit 502, from the multiple downlink transmission beams Determine the primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal; or receive the recommended downlink transmission beam information reported by the terminal through the transceiver unit 502; determine the primary downlink transmission beam information for the terminal based on the recommended downlink transmission beam information A downlink transmission beam and at least one auxiliary downlink transmission beam; or The received data signals and / or control signals of the terminal determine the signal strength information of multiple uplink receive beams; and based on the determined signal strength information of the multiple uplink receive beams, determine the primary downlink transmit beam and at least one for the terminal A secondary downlink transmission beam; or selecting at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and using the downlink CSI-RS transmission beam to the transceiver through the transceiver unit 502 The terminal sends a CSI-RS signal; the channel state information determined for the CSI-RS signal sent by the terminal is received by the transceiver unit 502, and the main downlink transmission beam and at least one auxiliary downlink for the terminal are determined according to the channel state information. Send beam.

Optionally, the processing unit 501 receives the channel state information determined for the CSI-RS signal sent by the terminal through the transceiver unit 502, and determines a primary downlink transmission beam and at least one auxiliary for the terminal according to the channel state information. When transmitting a beam in the downlink, it is specifically used to receive, through the transceiver unit 502, channel state information determined for each CSI-RS signal sent by the terminal, and according to the channel state information, the channel quality in the channel state information is the best. The downlink CSI-RS transmission beam corresponding to the CSI-RS signal of the CSI-RS signal is used as the main downlink beam, and one or more of the downlink CSI-RS transmission beams corresponding to the CSI-RS signal with the best channel quality in the channel state information are used. Downlink CSI-RS transmission beams, as the at least one secondary downlink beam.

Optionally, the transceiver unit 502 carries the indication information of the first beamforming mode in a control signal, and when sending the control signal to the terminal using the control channel, is specifically configured to configure N control resource subsets for the terminal, One control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam; the configuration information of the N control resource subsets is sent to the terminal so that The terminal monitors the N control resource subsets; carries the indication information of the first beamforming method in the control signal, and sends the information to the control resource subset through the one or more control resource subsets in the N control resource subsets. The terminal, so that when the terminal detects that there is an effective control channel in the N control resource subsets, the terminal obtains the first beamforming mode in the control signal, where the effective control channel refers to a control signal of the control channel is sent To the terminal, or to the terminal group where the terminal is located.

Optionally, the processing unit 501 is further configured to: before carrying the indication information of the first beamforming manner in a control signal through the transceiver unit 502, and determining the relationship with the terminal before sending it to the terminal through the control channel. A second beamforming manner corresponding to the control signal of the control channel between the two channels, the second beamforming manner is to beamform the control signal of the control channel by using the primary downlink transmission beam and / or the at least one secondary downlink beam ; The transceiver unit 502 carries the indication information of the first beam forming method in a control signal, and when sending to the terminal by using the control channel, is specifically configured to carry the indication information of the first beam forming method in the control In the signal, after the control signal is beamformed in the second beamforming manner, it is sent to the terminal through the control channel.

Optionally, the processing unit 501 is further configured to: according to the channel status information corresponding to the primary downlink transmission beam and the channel status information corresponding to the at least one secondary downlink transmission beam received by the terminal and received through the transceiver unit 502, Update the first beamforming mode; or when continuously receiving the HARQ non-response NACK feedback from the terminal or receiving no feedback from the terminal through the transceiver unit 502, according to the primary downlink transmission beam and The at least one auxiliary downlink transmission beam updates the first beamforming mode.

Optionally, the transceiver unit 502 is further configured to: send CSI-RS signal configuration information to the terminal, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS signal The downlink transmission beam is one of the main downlink transmission beam and the at least one auxiliary downlink transmission beam; the CSI-RS signal is transmitted using the CSI-RS signal downlink transmission beam; and the channel obtained by the terminal based on the CSI-RS signal is measured. Status information.

Optionally, the transceiver unit 502 is further configured to: send the CSI process configuration information to the terminal, where the CSI process configuration information includes association indication information of one or more CSI-RS signals; Channel state information obtained by measuring one or more CSI-RS signals associated with the CSI process.

Optionally, the first beamforming method includes part or all of the following: beamforming a data channel signal through a primary downlink transmission beam, beamforming a data channel signal through a secondary downlink transmission beam, and using a primary downlink The transmitting beam and the auxiliary downlink beam perform space division multiplexing beamforming on the signal of the data channel, and perform the diversity beamforming on the signal of the data channel through the main downlink transmitting beam and the auxiliary downlink beam.

Optionally, the second beamforming method includes part or all of the following: beamforming the control signal of the control channel through the primary downlink transmission beam, beamforming the control signal of the control channel through the secondary downlink transmission beam, and The primary downlink transmit beam and the secondary downlink beam perform diversity beamforming on the control signals of the control channel.

In the embodiment of the present invention, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams; the base station determines a first beam forming method corresponding to a signal of a data channel between the terminals. , Carrying the first beamforming method in the control signal and sending it to the terminal through the control channel, so that the terminal receives the signal sent by the base station through the data channel according to the first beamforming method in the control signal, where the first beam The forming method is to beamform the signal of the data channel through the main downlink transmission beam and / or at least one auxiliary downlink beam. It can be seen that when the base station sends control signals and data signals to the terminal, the beamforming can be flexibly selected. The method performs beamforming on signals, which improves the efficiency of data transmission and enhances the reliability of data transmission.

Based on the same inventive concept, an embodiment of the present invention further provides a terminal, as shown in FIG. 6, including: a transceiver unit 602, configured to receive configuration information of a primary downlink transmission beam and configuration of at least one secondary downlink transmission beam sent by a base station. Information; receiving a control signal sent by the base station, the control signal including a first beamforming method corresponding to a signal of a data channel between the base station and the terminal, the first beamforming method is transmitted through the main downlink A beam and / or the at least one auxiliary downlink beam to beamform the signal of the data channel; a processing unit 601, configured to receive configuration information of the main downlink transmission beam sent by the base station and the at least one auxiliary according to the receiving and receiving unit 602 The configuration information of the downlink transmission beam determines the primary downlink transmission beam and at least one secondary downlink transmission beam; according to the first beamforming mode, a signal sent by the base station through the data channel is received by the transceiver unit 602.

Optionally, when receiving and receiving the control signal sent by the base station, the transceiver unit 602 is specifically configured to: receive the control signal that is beam-formed by the second beam-forming method and sent by the base station through a control channel with the terminal, The second beamforming method is to beamform the control signal of the control channel by using the main downlink transmission beam and / or the at least one auxiliary downlink beam.

Optionally, the transceiver unit 602 is further configured to receive CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS The signal downlink transmission beam is one of the main downlink transmission beam and the at least one auxiliary downlink transmission beam; the processing unit 601 is further configured to determine a CSI-RS downlink reception beam corresponding to the CSI-RS signal downlink transmission beam, And receiving the CSI-RS signal sent by the base station through the transceiver unit 602 according to the CSI-RS downlink receiving beam; obtaining a channel estimation value according to the CSI-RS signal received through the transceiver unit 602, and obtaining the channel estimation value according to the channel estimation value The channel status information is sent to the base station through the transceiver unit 602.

Optionally, the transceiver unit 602 is further configured to receive CSI process configuration information sent by the base station, where the CSI process configuration information includes association indication information of one or more CSI-RS signals; and according to the association indication information, Determine one or more CSI-RS signals associated with each process; the processing unit 601 obtains channel estimates based on the CSI-RS signals received through the transceiver unit 602, and obtains channel status information according to the channel estimates and passes the When the transceiver unit 602 sends to the base station, it is specifically configured to: obtain the channel estimation value of one or more CSI-RS signals associated with each process according to the CSI-RS signal received by the transceiver unit 602; according to each process The channel estimation value of the associated one or more CSI-RS signals determines channel state information and feeds back to the base station through the transceiver unit 602.

Optionally, when the processing unit 601 determines the channel state information according to the channel estimation value of one or more CSI-RS signals associated with each process, and returns the channel state information to the base station through the transceiver unit 602, the processing unit 601 is specifically configured to: The channel estimation value of each CSI-RS signal associated with each process determines the channel state information corresponding to each CSI-RS signal, and returns the channel state information corresponding to each CSI-RS signal to the base station; or Channel estimation value of CSI-RS signals associated with each CSI-RS process, determine comprehensive channel state information, and feed back the integrated channel state information to the base station; or according to the channel of each CSI-RS signal associated with each process Estimated value, select one or more of the CSI-RS signals, determine and return the channel state information corresponding to each selected CSI-RS signal, and return the identification information of each selected CSI-RS signal to the base station.

Optionally, when the processing unit 601 receives the signal sent by the base station through the data channel through the transceiver unit 602 according to the first beamforming mode, the processing unit 601 is specifically used: if the first beamforming mode is adopted by the data channel For the primary downlink transmission beam transmission, the downlink receiving beam corresponding to the primary downlink transmission beam is used to receive through the transceiver unit 602; or if the first beamforming method uses the secondary downlink transmission beam for data channel transmission, the secondary downlink transmission beam is used The corresponding downlink receiving beam is received by the transceiver unit 602; or if the first beam forming method is the data channel using the primary downlink transmission beam and the secondary downlink beam for space division multiplexing transmission, the primary downlink transmission beam and the secondary downlink are used The downlink receiving beams corresponding to the transmitting beams are received by the transceiver unit 602; or if the first beamforming method uses the primary downlink transmitting beam and the secondary downlink beam for diversity transmission for the data channel, the primary downlink transmitting beam and the secondary downlink are used. The downlink receiving beams corresponding to the transmitting beams are connected through the transceiver unit 602. Close.

In the embodiment of the present invention, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams; the base station determines a first beam forming method corresponding to a signal of a data channel between the terminals. , Carrying the first beamforming method in the control signal and sending it to the terminal through the control channel, so that the terminal receives the signal sent by the base station through the data channel according to the first beamforming method in the control signal, where the first beam The forming method is to beamform the signal of the data channel through the main downlink transmission beam and / or at least one auxiliary downlink beam. It can be seen that when the base station sends control signals and data signals to the terminal, the beamforming can be flexibly selected. The method performs beamforming on signals, which improves the efficiency of data transmission and enhances the reliability of data transmission.

Based on the same inventive concept, an embodiment of the present invention further provides a base station. As shown in FIG. 7, the base station includes a processing unit 701 configured to configure N control resource subsets for a terminal, where one control resource subset includes multiple A resource unit for control channel transmission; a transceiver unit 702 for sending configuration information of the N control resource subsets to the terminal, the configuration information including indication information of downlink transmission beams corresponding to each control resource subset Sending a control signal to the terminal in at least one control resource subset of the N control resource subsets;

Optionally, when the transceiver unit 702 sends a control signal to the terminal in at least one control resource subset of the N control resource subsets, it is specifically configured to: at least one control in the N control resource subsets The downlink transmission beam corresponding to the resource subset sends the control signal to the terminal.

In the embodiment of the present invention, the base station may send a control signal to the terminal through the control resource subset, and when sending, the base station may send the control signal on one control resource subset or on multiple control resource subsets, thereby achieving Send control signals flexibly, improving transmission efficiency and stability.

Based on the same inventive concept, an embodiment of the present invention further provides a terminal. As shown in FIG. 8, the terminal includes: a transceiver unit 802 configured to receive configuration information of N control resource subsets sent by a base station. The set includes a plurality of resource units for control channel transmission, and the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; receiving at least one control resource in the N control resource subsets by the base station Control signals sent within a subset.

Optionally, the terminal further includes a processing unit 801. The processing unit 801 is configured to determine, according to the indication information of the downlink transmission beam corresponding to the at least one control resource subset, to receive the downlink reception beam of the control resource subset; the transceiver When the unit 802 receives a control signal sent by the base station through at least one control resource subset in the N control resource subsets, it is specifically configured to: use the downlink receiving beam determined by the processing unit 801 to be in the control resource subset. Receive control signals.

In the embodiment of the present invention, the base station may send a control signal to the terminal through the control resource subset, and when sending, the base station may send the control signal on one control resource subset or on multiple control resource subsets, thereby achieving Send control signals flexibly, improving transmission efficiency and stability.

The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, and a combination of the process and / or block in the flowchart and / or block diagram may be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to generate a machine for instructions executed by the processor of the computer or other programmable data processing device Means are generated for implementing the functions specified in one or more of the flowcharts and / or one or more of the block diagrams.

These computer program instructions can also be stored in computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured article including a command device The instruction device implements the functions specified in a flowchart or a plurality of processes and / or a block or a plurality of blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operating steps can be performed on the computer or other programmable equipment to generate computer-implemented processing, and thus on the computer or other programmable equipment The instructions executed on the steps provide steps for implementing the functions specified in one or more of the flowcharts and / or one or more of the block diagrams.

Although the preferred embodiments of the present invention have been described, those skilled in the art can make other changes and modifications to these embodiments once they know the basic inventive concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications that fall within the scope of the invention.

Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (40)

    A large-scale antenna beam transmission method, comprising: a base station determining a primary downlink transmission beam and at least one secondary downlink transmission beam for a terminal from a plurality of downlink transmission beams; and the base station configuring the primary downlink transmission beam. Information and configuration information of the at least one auxiliary downlink transmission beam are sent to the terminal; the base station determines a first beamforming mode corresponding to a signal of a data channel between the terminals, and the first beamforming mode is through the The main downlink transmission beam and / or the at least one auxiliary downlink beam beamforms the signal of the data channel; the base station carries the indication information of the first beamforming mode in the control signal and sends it to the control channel through the control channel. The terminal enables the terminal to receive a signal sent by the base station through the data channel according to the first beamforming mode.         The large-scale antenna beam transmission method according to claim 1, wherein the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams, and the base station includes: Downlink transmission beams send training signals to the terminal, so that the terminal determines the signal strength information of the multiple downlink transmission beams and sends them to the base station; the base station according to the received signal strength information of the multiple downlink transmission beams , Determining a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from the plurality of downlink transmission beams; or the base station receives the recommended downlink transmission beam information reported by the terminal, and based on the recommended downlink transmission beam The information determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal; or the base station determines signal strength information of multiple uplink reception beams according to the received data signal and / or control signal of the terminal; the base Based on the signal strength information of the determined multiple uplink receiving beams, the station determines The primary downlink transmission beam and at least one secondary downlink transmission beam of the terminal; or the base station selects at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and uses the downlink The CSI-RS transmission beam sends a CSI-RS signal to the terminal; the base station receives the channel state information determined for the CSI-RS signal sent by the terminal, and determines the main downlink transmission beam for the terminal based on the channel state information And at least one secondary downlink transmit beam.         The large-scale antenna beam transmission method according to claim 2, wherein the base station receives channel state information determined for the CSI-RS signal sent by the terminal, and determines a primary downlink for the terminal according to the channel state information. The transmitting beam and at least one auxiliary downlink transmitting beam include: the base station receives channel state information determined for each CSI-RS signal sent by the terminal, and according to the channel state information, the channel quality in the channel state information is the best The downlink CSI-RS transmission beam corresponding to the best CSI-RS signal is used as the main downlink beam, and one or more other than the downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality in the channel state information or Multiple downlink CSI-RS transmission beams are used as the at least one secondary downlink beam.         The large-scale antenna beam transmission method according to claim 1, wherein the base station carries the indication information of the first beamforming method in a control signal, and sends the control information to the terminal through the control channel, including the base station Configure N control resource subsets for the terminal, where one control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam; the base station associates the N control resources with The configuration information of the control resource subset is sent to the terminal, so that the terminal monitors the N control resource subsets; the base station carries the indication information of the first beamforming mode in the control signal, and passes the control signal. One or more control resource subsets in the N control resource subsets are sent to the terminal, so that the terminal obtains the first beam in the control signal when it detects that an effective control channel exists in the N control resource subsets. The indication information of the forming method. The effective control channel refers to whether the control signal of the control channel is sent to the terminal or to the terminal group where the terminal is located.         The large-scale antenna beam transmission method according to claim 1, wherein the base station carries the indication information of the first beamforming method in a control signal, and before sending the information to the terminal through the control channel, the base station further includes: The station determines a second beamforming mode corresponding to the control signal of the control channel between the terminals, and the second beamforming mode is using the main downlink transmission beam and / or the at least one auxiliary downlink beam to control the channel The control signal performs beamforming; the base station carries the indication information of the first beamforming mode in the control signal, and sends it to the terminal through the control channel, including: the base station indicates the first beamforming mode. Information is carried in the control signal, and after the control signal is beamformed by the second beamforming method, it is sent to the terminal through the control channel.         The large-scale antenna beam transmission method according to claim 1, wherein the method further comprises: the base station according to channel state information corresponding to the primary downlink transmission beam and the channel corresponding to the at least one secondary downlink transmission beam returned by the terminal. Status information to update the first beamforming method; or when the base station continues to receive the HARQ non-response NACK feedback from the terminal or receives no feedback from the terminal, it transmits the beam according to the primary downlink And the at least one auxiliary downlink transmission beam, and updating the first beamforming mode.         The large-scale antenna beam transmission method according to claim 6, wherein the method further comprises: CSI-RS signal configuration information sent by the base station to the terminal, and the CSI-RS signal configuration information includes CSI-RS signal downlink Configuration information of the transmission beam, the CSI-RS signal downlink transmission beam is one of the main downlink transmission beam and the at least one auxiliary downlink transmission beam; the base station transmits the CSI-RS signal by using the CSI-RS signal downlink transmission beam; The base station receives channel state information measured by the terminal based on the CSI-RS signal.         The large-scale antenna beam transmission method according to claim 7, wherein the method further comprises: the base station sends CSI process configuration information to the terminal, and the CSI process configuration information includes association of one or more CSI-RS signals Indication information; the base station receives channel state information measured by the terminal according to one or more CSI-RS signals associated with the CSI process.         The large-scale antenna beam transmission method according to any one of claims 1 to 8, wherein the first beamforming method includes a part or all of the following: beamforming a data channel signal through a main downlink transmission beam, Beamforming the data channel signal through the auxiliary downlink transmission beam, space division multiplexing beamforming the data channel signal through the main downlink transmission beam and the auxiliary downlink beam, and the data channel through the main downlink transmission beam and the auxiliary downlink beam Signals for diversity beamforming.         The large-scale antenna beam transmission method as described in claim 5, wherein the second beamforming method includes part or all of the following: beamforming a control signal of a control channel through a primary downlink transmission beam, and transmitting through a secondary downlink The beam performs beamforming on the control signal of the control channel, and performs diversity beamforming on the control signal of the control channel through the primary downlink transmission beam and the secondary downlink beam.         A large-scale antenna beam transmission method, comprising: a terminal receiving configuration information of a primary downlink transmission beam and configuration information of at least one secondary downlink transmission beam sent by a base station, determining the primary downlink transmission beam and at least one secondary downlink transmission Beam; the terminal receives a control signal sent by the base station, and the control signal includes a first beamforming mode corresponding to a signal of a data channel between the base station and the terminal, and the first beamforming mode is through the The main downlink transmission beam and / or the at least one auxiliary downlink beam perform beamforming on the signal of the data channel; the terminal receives a signal sent by the base station through the data channel according to the first beamforming mode.         The large-scale antenna beam transmission method according to claim 11, wherein the receiving the control signal sent by the base station includes: receiving, by the terminal, a second beam sent by the base station through a control channel between the base station and the terminal. The control signal is formed in a beamforming manner. The second beamforming manner is to beamform the control signal of the control channel by using the primary downlink transmission beam and / or the at least one secondary downlink beam.         The large-scale antenna beam transmission method according to claim 11, wherein the method further includes: the terminal receives CSI-RS signal configuration information sent by the base station, and the CSI-RS signal configuration information includes CSI-RS signal downlink Configuration information of a transmission beam, the CSI-RS signal downlink transmission beam is one of the main downlink transmission beam and the at least one auxiliary downlink transmission beam; the terminal determines a CSI-RS signal corresponding to the CSI-RS signal downlink transmission beam A downlink receiving beam and receiving a CSI-RS signal sent by the base station according to the CSI-RS signal; the terminal obtaining a channel estimation value according to the received CSI-RS signal, and obtaining channel state information according to the channel estimation value Send to the base station.         The large-scale antenna beam transmission method according to claim 13, wherein the method further comprises: the terminal receives CSI process configuration information sent by the base station, and the CSI process configuration information includes one or more CSI-RS signals. Association instruction information; the terminal determines one or more CSI-RS signals associated with each process according to the association instruction information; the terminal obtains a channel estimation value according to the received CSI-RS signal, and obtains a channel according to the channel estimation value The status information is sent to the base station, including: the terminal obtains channel estimates of one or more CSI-RS signals associated with each process according to the received CSI-RS signals; The channel estimation value of one or more CSI-RS signals determines channel state information and feeds back to the base station.         The large-scale antenna beam transmission method according to claim 14, wherein the terminal determines channel status information and returns the channel status information to the base station according to channel estimation values of one or more CSI-RS signals associated with each CSI process, including: : The terminal determines the channel state information corresponding to each CSI-RS signal according to the channel estimation value of each CSI-RS signal associated with each process, and returns the channel state information corresponding to each CSI-RS signal to the base. Or the terminal determines comprehensive channel state information according to the channel estimation value of the CSI-RS signal associated with each CSI process, and feeds back the integrated channel state information to the base station; or the terminal Channel estimation value of each CSI-RS signal, select one or more CSI-RS signals, determine and feedback channel state information corresponding to each selected CSI-RS signal separately, and send each selected CSI-RS signal The identification information is fed back to the base station.         The large-scale antenna beam transmission method according to any one of claims 11 to 15, wherein the terminal receiving the signal of the data channel sent by the base station according to the first beamforming method includes: if the first beam In the forming method, the data channel is transmitted using the primary downlink transmission beam, and then the terminal receives using the downlink receiving beam corresponding to the primary downlink transmission beam; or if the first beam forming method is the data channel using the secondary downlink transmitting beam, the The terminal uses the downlink receiving beam corresponding to the auxiliary downlink transmitting beam to receive; or if the first beam forming method uses the primary downlink transmitting beam and the auxiliary downlink beam for space division multiplexing transmission for the data channel, the terminal uses the primary downlink transmitting beam. The downlink receiving beam corresponding to the secondary downlink transmitting beam is used for receiving; or if the first beam forming method is the data channel using the primary downlink transmitting beam and the secondary downlink beam for diversity transmission, the terminal uses the primary downlink transmitting beam and the secondary downlink. The downlink receiving beams corresponding to the transmitting beams are respectively received.         A large-scale antenna beam transmission method, comprising: a base station configuring N control resource subsets for a terminal, wherein one control resource subset includes a plurality of resource units for control channel transmission; The configuration information of the N control resource subsets is sent to the terminal, and the configuration information includes indication information of the downlink transmission beam corresponding to each control resource subset; the base station has at least one control resource in the N control resource subsets. Within the subset, a control signal is sent to the terminal.         The large-scale antenna beam transmission method according to claim 17, wherein the base station sends a control signal to the terminal in one or more control resource subsets of the N control resource subsets, including: the base station A downlink transmission beam corresponding to at least one control resource subset in the N control resource subsets sends the control signal to the terminal.         A large-scale antenna beam transmission method, comprising: a terminal receiving configuration information of N control resource subsets sent by a base station, wherein one control resource subset includes a plurality of resource units for control channel transmission, and The configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; the terminal receives a control signal sent by the base station through at least one control resource subset in the N control resource subsets.         The large-scale antenna beam transmission method according to claim 19, wherein receiving, by the terminal, a control signal sent by the base station in at least one control resource subset of the N control resource subsets includes: the terminal according to the at least The indication information of a downlink transmission beam corresponding to a control resource subset determines to receive a downlink reception beam of the control resource subset; the terminal uses the downlink reception beam to receive a control signal in the control resource subset.         A base station, comprising: a processing unit, configured to determine a primary downlink transmission beam and at least one secondary downlink transmission beam for a terminal from a plurality of downlink transmission beams; and determine a signal correspondence with a data channel between the terminals A first beamforming method, the first beamforming method is to beamform the signal of the data channel through the main downlink transmission beam and / or the at least one auxiliary downlink beam; a transceiver unit is configured to The configuration information of the downlink transmission beam and the configuration information of the at least one auxiliary downlink transmission beam are sent to the terminal; the indication information of the first beam forming method is carried in a control signal, and sent to the terminal through a control channel, so that the terminal The terminal receives a signal sent by the base station through the data channel according to the first beamforming mode.         The base station according to claim 21, wherein when the processing unit determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from multiple downlink transmission beams, the processing unit is specifically configured to: according to the multiple downlink transmission beams The beam sends training signals to the terminal through the transceiver unit, so that the terminal determines the signal strength information of the multiple downlink transmission beams and sends them to the base station; according to the signal strengths of the multiple downlink transmission beams received by the transceiver unit Information, determining the primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from the plurality of downlink transmission beams; or receiving the recommended downlink transmission beam information reported by the terminal through the transceiver unit; based on the recommended downlink The transmission beam information determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal; or determines signal strength information of multiple uplink reception beams according to a data signal and / or a control signal of the terminal received by the transceiver unit; Determine the pin based on the signal strength information of the determined multiple uplink receive beams For the primary downlink transmission beam and at least one secondary downlink transmission beam of the terminal; or select at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and pass the transceiver unit Sending the CSI-RS signal to the terminal by using the downlink CSI-RS transmission beam; receiving the channel state information determined for the CSI-RS signal sent by the terminal through the transceiver unit, and determining the channel state information for the terminal according to the channel state information A primary downlink transmission beam and at least one secondary downlink transmission beam.         The base station according to claim 22, wherein the processing unit receives the channel state information determined for the CSI-RS signal sent by the terminal through the transceiver unit, and determines the primary downlink for the terminal according to the channel state information. The sending beam and at least one auxiliary downlink sending beam are specifically used to receive, through the transceiver unit, channel state information determined for each CSI-RS signal sent by the terminal, and based on the channel state information, add the channel state information to the channel state information. The downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality is used as the main downlink beam, and one of the downlink CSI-RS transmission beams corresponding to the CSI-RS signal with the best channel quality in the channel status information is excluded. One or more downlink CSI-RS transmission beams are used as the at least one secondary downlink beam.         The base station according to claim 21, wherein the transceiver unit carries the indication information of the first beamforming method in a control signal, and when sending the control information to the terminal through the control channel, is specifically configured to configure N for the terminal Control resource subsets, where one control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam; sending configuration information for the N control resource subsets To the terminal, so that the terminal monitors the N control resource subsets; carries the indication information of the first beamforming mode in the control signal, and passes one or more of the N control resource subsets The control resource subset is sent to the terminal, so that when the terminal detects that there are valid control channels in the N control resource subsets, the terminal obtains the indication information of the first beamforming mode in the control signal, and the effective control channel It means that the control signal of the control channel is sent to the terminal or to the terminal group where the terminal is located.         The base station according to claim 21, wherein the processing unit is further configured to: before carrying the instruction information of the first beamforming mode in the control signal through the transceiver unit, and send it to the terminal through the control channel To determine a second beamforming method corresponding to the control signal of the control channel between the terminals, where the second beamforming method is to use the main downlink transmission beam and / or the at least one auxiliary downlink beam to control the channel. The control signal is beamformed; when the transceiver unit carries the indication information of the first beamforming method in the control signal, and sends it to the terminal through the control channel, it is specifically used to: The instruction information is carried in the control signal, and after the control signal is beamformed by the second beamforming method, it is sent to the terminal through the control channel.         The base station according to claim 21, wherein the processing unit is further configured to: according to the channel state information corresponding to the primary downlink transmission beam received by the terminal and received by the transceiver unit, and the at least one secondary downlink transmission beam Corresponding channel state information, update the first beamforming method; or when the hybrid automatic retransmission request HARQ non-response NACK feedback sent by the terminal is continuously received through the transceiver unit, or no feedback from the terminal is received, according to the The primary downlink transmission beam and the at least one secondary downlink transmission beam update the first beamforming mode.         The base station according to claim 26, wherein the transceiver unit is further configured to: send CSI-RS signal configuration information to the terminal, and the CSI-RS signal configuration information includes a configuration of a downlink transmission beam of the CSI-RS signal Information, the CSI-RS signal downlink transmission beam is one of the main downlink transmission beam and the at least one auxiliary downlink transmission beam; using the CSI-RS signal downlink transmission beam to send a CSI-RS signal; receiving the terminal based on the CSI-RS Channel status information obtained from RS signals.         The base station according to claim 27, wherein the transceiver unit is further configured to send CSI process configuration information to the terminal, the CSI process configuration information including one or more CSI-RS signal association indication information; receiving The channel state information obtained by the terminal performing measurement according to one or more CSI-RS signals associated with the CSI process.         The base station according to any one of claims 23 to 28, wherein the first beamforming method includes part or all of the following: beamforming a data channel signal through a primary downlink transmission beam, and transmitting through a secondary downlink Beam beamforming the data channel signal, space division multiplexing beamforming the data channel signal with the primary downlink transmit beam and the secondary downlink beam, and diversity data channel signal with the primary downlink transmit beam and the secondary downlink beam Beamforming.         The base station as described in claim 27, wherein the second beamforming method includes part or all of the following: beamforming a control channel's control signal through a primary downlink transmission beam, and beamforming a control channel through a secondary downlink transmission beam The control signals are beamformed, and the diversity control is performed on the control signals of the control channel through the primary downlink transmit beam and the secondary downlink beam.         A terminal, comprising: a transceiver unit configured to receive configuration information of a primary downlink transmission beam and configuration information of at least one secondary downlink transmission beam sent by a base station; and receiving a control signal sent by the base station. A first beamforming mode corresponding to a signal of a data channel between the base station and the terminal, where the first beamforming mode is the data channel of the data channel through the main downlink transmission beam and / or the at least one auxiliary downlink beam. Beamforming the signal; a processing unit configured to determine the primary downlink transmission beam and at least one secondary transmission beam according to the configuration information of the primary downlink transmission beam and the configuration information of at least one secondary downlink transmission beam received by the base station and received by the transceiver unit A downlink transmission beam; and a signal sent by the base station through the data channel is received by the transceiver unit according to the first beamforming mode.         The terminal according to claim 31, wherein when the transceiver unit receives the control signal sent by the base station, it is specifically configured to: receive the second beamforming method sent by the base station through the control channel with the terminal For the control signal for beamforming, the second beamforming method is to beamform the control signal of the control channel by using the primary downlink transmission beam and / or the at least one secondary downlink beam.         The terminal according to claim 31, wherein the transceiver unit is further configured to receive CSI-RS signal configuration information sent by the base station, and the CSI-RS signal configuration information includes a configuration of a downlink transmission beam of the CSI-RS signal Information, the CSI-RS signal downlink transmission beam is one of the main downlink transmission beam and the at least one auxiliary downlink transmission beam; the processing unit is further configured to determine a CSI- corresponding to the CSI-RS signal downlink transmission beam RS downlink receive beam, and receive the CSI-RS signal sent by the base station through the transceiver unit according to the CSI-RS downlink receive beam; obtain a channel estimation value according to the CSI-RS signal received by the transceiver unit, and according to the channel After the estimated value obtains the channel status information, it is sent to the base station through the transceiver unit.         The terminal according to claim 33, wherein the transceiver unit is further configured to receive CSI process configuration information sent by the base station, where the CSI process configuration information includes one or more CSI-RS signal association indication information; Determine one or more CSI-RS signals associated with each process according to the association instruction information; the processing unit obtains channel estimation values according to the CSI-RS signals received by the transceiver unit, and obtains channel state information according to the channel estimation values When sending it to the base station through the transceiver unit, it is specifically used to: obtain the channel estimation value of one or more CSI-RS signals associated with each process according to the CSI-RS signal received by the transceiver unit; according to each The channel estimation value of the one or more CSI-RS signals associated with the process determines channel state information and feeds back to the base station through the transceiver unit.         The terminal according to claim 34, wherein when the processing unit determines channel state information according to channel estimation values of one or more CSI-RS signals associated with each process, and returns the channel state information to the base station through the transceiver unit, specifically It is used to determine the channel state information corresponding to each CSI-RS signal according to the channel estimation value of each CSI-RS signal associated with each process, and return the channel state information corresponding to each CSI-RS signal to the base. Or according to the channel estimation value of the CSI-RS signal associated with each CSI process, determine comprehensive channel state information, and feed back the integrated channel state information to the base station; or according to each CSI-RS associated with each process The channel estimation value of the signal. One or more CSI-RS signals are selected, and the channel status information corresponding to each selected CSI-RS signal is determined and fed back, and the identification information of each selected CSI-RS signal is fed back. To the base station.         The terminal according to any one of claims 31 to 35, wherein when the processing unit receives a signal sent by the base station through the data channel through the transmitting and receiving unit according to the first beamforming mode, the processing unit is specifically configured to: The first beamforming method uses the main downlink transmission beam for data channel transmission, and the downlink receiving beam corresponding to the main downlink transmission beam is used to receive through the transceiver unit; or if the first beamforming method uses the auxiliary downlink for the data channel For transmission beam transmission, the downlink receiving beam corresponding to the auxiliary downlink transmission beam is used to receive through the transceiver unit; or if the first beam forming method is the data channel, the main downlink transmission beam and the auxiliary downlink beam are used for space division multiplexing transmission. The downlink receiving beams corresponding to the primary downlink transmitting beam and the secondary downlink transmitting beam are respectively received by the transceiver unit; or if the first beam forming method is the data channel using the primary downlink transmitting beam and the secondary downlink beam for diversity transmission, then Use the downlink receive beams corresponding to the primary downlink transmit beam and the secondary downlink transmit beam, respectively Received through the transceiving unit.         A base station is characterized in that it comprises: a processing unit configured to configure N control resource subsets for a terminal, wherein one control resource subset includes a plurality of resource units for control channel transmission; and a transceiver unit for The configuration information of the N control resource subsets is sent to the terminal, and the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; at least one control resource subset in the N control resource subsets Within, send a control signal to the terminal.         The base station according to claim 37, wherein when the transceiver unit sends a control signal to the terminal in at least one control resource subset in the N control resource subsets, the base station is specifically configured to: in the N control resources A downlink transmission beam corresponding to at least one control resource subset in the subset sends the control signal to the terminal.         A terminal is characterized in that it comprises: a transceiver unit for receiving configuration information of N control resource subsets sent by a base station, wherein one control resource subset includes a plurality of resource units for control channel transmission, and the configuration The information includes indication information of downlink transmission beams corresponding to each control resource subset; receiving control signals sent by the base station through at least one control resource subset in the N control resource subsets.         The terminal according to claim 39, wherein the terminal further comprises a processing unit, configured to determine, according to the indication information of the downlink transmission beam corresponding to the at least one control resource subset, to receive the downlink of the control resource subset. A receiving beam; when the transceiver unit receives a control signal sent by the base station through at least one control resource subset in the N control resource subsets, it is specifically configured to: use the downlink receiving beam determined by the processing unit to control the resource Receive control signals within a subset.