TWI757313B - A large-scale antenna beam transmission method, base station, and terminal - Google Patents

Abstract

The invention belongs to the technical field of wireless communication, and in particular relates to a large-scale antenna beam transmission method, a base station, and a terminal, which are used to improve transmission efficiency and enhance reliability in large-scale antenna beam transmission. The main downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal are determined in the beams; the base station determines the first beamforming mode corresponding to the data channel between the terminals, and carries the first beamforming mode in the control signal to pass 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, and the first beamforming method is to beam the signal of the data channel through the main downlink transmission beam and/or at least one auxiliary downlink transmission beam. shape.

Description

A large-scale antenna beam transmission method, base station, and terminal

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

In order to further improve the MIMO (Multiple-Input Multiple-Output, multiple-input multiple-output system) technology, a large-scale antenna technology is introduced into the mobile communication system. For the base station, the fully digital large-scale antenna can have up to 128/256/512 antenna elements, and up to 128/256/512 transceiver units, each antenna element is connected to a transceiver unit. By sending pilot signals of up to 128/256/512 antenna ports, the terminal can measure the channel status information and feedback it. For terminals, antenna arrays 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 the signal attenuation caused by path loss. Especially in high-frequency communication, such as the 30GHz frequency point, the path loss makes the coverage of wireless signals extremely limited. Through large-scale antenna technology, the coverage of wireless signals can be expanded to the practical range.

In the prior art, when large-scale antenna beam transmission is performed, the beamforming correspondence between the base station and the 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 transmit beams, and each candidate downlink transmit beam corresponds to a set of beamforming weights. The base station can A beam training signal is transmitted for each candidate downlink transmission beam, that is, the beam training signal of each candidate downlink transmission beam is sent out 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 the recommended downlink transmission beam by measuring the beam training signal. For example, the terminal may select the candidate downlink transmit beam with the strongest received power of the training signal as the recommended beam.

3) For each recommended downlink transmit beam, the terminal determines the corresponding downlink receive beam.

4) The terminal reports the relevant information of the recommended downlink transmit beam to the base station. The relevant information includes the identifier of the recommended downlink transmission beam (eg, the number of the downlink transmission beam), the training signal strength information of the downlink transmission beam received by the terminal (eg, the received signal power level), and the like.

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

Through the above process, one or more corresponding downlink transmit beams can be determined for a terminal, and the downlink receive beam on the terminal side can be determined, and in the process of data transmission, the base station selects one of the determined downlink transmit beams. The downlink beam sends a signal to the terminal and cannot be changed after the selected downlink beam is determined.

The problem in the above process is: after determining multiple downlink transmission beams corresponding to the terminal, 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 transmission beam The transmit beam cannot be changed, which can lead to serious performance bottlenecks when a large number of signals need to be transmitted, and the reliability is not very high.

To sum up, the large-scale antenna beam transmission method in the prior art has technical problems of low reliability and low transmission efficiency.

Embodiments of the present invention provide a large-scale antenna beam transmission method, a base station, and a terminal, so as to improve transmission efficiency and enhance 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 transmit beam and at least one secondary downlink transmit beam for a terminal from a plurality of downlink transmit 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 the first beamforming mode corresponding to the signal of the data channel between the terminal, the first beamforming The shaping method is to perform beamforming on the signal of the data channel through the primary downlink transmission beam and/or the at least one auxiliary downlink transmission beam; the base station carries the indication information of the first beamforming method in the control signal, The signal is sent to the terminal through the control channel, so that the terminal can receive the signal sent by the base station through the data channel according to the first beamforming method.

Optionally, the base station determines the primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from the multiple downlink transmission beams, including: the base station sends a training signal to the terminal according to the multiple downlink transmission beams, to Make the terminal determine the signal strength information of the plurality of downlink transmission beams and send it to the base station; the base station determines the signal strength information of the plurality of downlink transmission beams from the plurality of downlink transmission beams according to the received signal strength information of the plurality of downlink transmission beams. the primary downlink transmit beam and at least one secondary downlink transmit beam of the terminal; or The base station receives the recommended downlink transmit beam information reported by the terminal, and determines the primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal based on the recommended downlink transmit beam information; The data signal and/or control signal of the terminal determines the signal strength information of multiple uplink receiving beams; the base station determines the main downlink transmit beam and at least one secondary transmission beam for the terminal according to the determined signal strength information of the multiple uplink receiving beams. a downlink transmission beam; or the base station selects at least one downlink transmission beam from the multiple downlink transmission beams as a downlink channel status information reference signal CSI-RS transmission beam, and uses the downlink CSI-RS transmission beam to transmit CSI to the terminal -RS signal; the base station receives the channel state information determined for the CSI-RS signal sent by the terminal, and determines the primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal according to the channel state information.

Optionally, the base station receives the channel state information determined for the CSI-RS signal sent by the terminal, and determines, according to the channel state information, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal, including: 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, determines 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 transmission 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 transmission beam. At least one secondary downlink transmit beam.

Optionally, the base station carries the first beamforming manner in the control signal, After the control signal is beamformed by the second beamforming method, the control signal is sent to the terminal through the control channel, including: the base station configures N control resource subsets for the terminal, wherein one control resource subset It includes a plurality of resource units for control channel transmission, and a control resource subset is associated with a downlink transmission beam; the base station sends the configuration information of the N control resource subsets to the terminal, so that the terminal can have the N control resource subsets are monitored; the base station carries the indication information of the first beamforming mode in the control signal, and sends the information to the N control resource subsets through one or more control resource subsets in the N control resource subsets. terminal, so that the terminal obtains the first beamforming mode in the control signal when monitoring that there is an effective control channel in the N control resource subsets, and the effective control channel means that the control signal of the control channel is sent to the terminal, or sent to the terminal group where the terminal belongs.

Optionally, the base station carries the indication information of the first beamforming mode in the control signal, and before sending it to the terminal through the control channel, it further includes: the base station determines the control of the control channel between the base station and the terminal The second beamforming mode corresponding to the signal, the second beamforming mode is to perform beamforming on the control signal of the control channel through the main downlink transmission beam and/or the at least one auxiliary downlink transmission beam; the base station will The indication information of the first beamforming mode is carried in the control signal and sent to the terminal through the control channel, including: the base station carries the indication information of the first beamforming mode in the control signal, In the beamforming manner, after beamforming the control signal, the control signal is sent to the terminal through the control channel.

Optionally, the base station updates the first beamforming mode 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 returned by the terminal; or the base station is in When continuously receiving the HARQ non-response NACK feedback sent by the terminal or receiving no feedback from the terminal, update the first beamforming mode according to the primary downlink transmission beam and the at least one secondary downlink transmission beam .

Optionally, the CSI-RS signal configuration information sent by the base station to the terminal, the CSI-RS signal configuration information includes configuration information of the CSI-RS signal downlink transmission beam, and the CSI-RS signal downlink transmission beam is the primary transmission beam. one of the downlink transmission beam and the at least one secondary downlink transmission beam; the base station uses the CSI-RS signal downlink transmission beam to transmit the CSI-RS signal; the base station receives the channel obtained by the terminal based on the measurement of the CSI-RS signal Status information.

Optionally, the base station sends CSI process configuration information to the terminal, and 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 in the terminal. Channel state information obtained by measuring the associated one or more CSI-RS signals.

Optionally, the first beamforming manner includes some or all of the following: beamforming the signal of the data channel by using the primary downlink transmission beam, performing beamforming on the signal of the data channel by using the secondary downlink transmission beam, and using the primary downlink transmission beam to beamform the signal of the data channel. The transmission beam and the auxiliary downlink transmission beam perform space division multiplexing beamforming on the signal of the data channel, and perform diversity beamforming on the signal of the data channel through the main downlink transmission beam and the auxiliary downlink transmission beam.

Optionally, the second beamforming manner includes some or all of the following: performing beamforming on the control signal of the control channel by using the primary downlink transmit beam, performing beamforming on the control signal of the control channel by using the secondary downlink transmit beam, The primary downlink transmit beam and the secondary downlink transmit beam perform diversity beamforming on the control signal 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 receives configuration information of a primary downlink transmit beam and configuration information of at least one secondary downlink transmit beam sent by a base station, determines the primary downlink transmit beam and the at least one secondary downlink transmit beam; the terminal receives a control signal sent by the base station, the control signal includes a first beamforming mode corresponding to the signal of the data channel between the base station and the terminal, the first beamforming The shaping method is to perform beamforming on the signal of the data channel through the main downlink transmission beam and/or the at least one auxiliary downlink transmission beam; the terminal receives the data sent by the base station through the data channel according to the first beamforming method. Signal.

Optionally, the terminal receiving the control signal sent by the base station includes: receiving, by the terminal, the control signal sent by the base station through a control channel between the base station and the terminal that is beamformed in a second beamforming manner. The two beamforming manner is to perform beamforming on the control signal of the control channel through the primary downlink transmit beam and/or the at least one secondary downlink transmit beam.

Optionally, the terminal receives CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes configuration information of the CSI-RS signal downlink transmission beam, the The CSI-RS signal downlink transmit beam is one of the primary downlink transmit beam and the at least one secondary downlink transmit beam; the terminal determines the CSI-RS downlink receive beam corresponding to the CSI-RS signal downlink transmit beam, and according to the CSI-RS signal downlink transmit beam - The RS downlink receiving beam receives the CSI-RS signal sent by the base station; 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 it to the base station.

Optionally, the method further includes: receiving, by the terminal, 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; the terminal, according to the association indication information, Determine one or more CSI-RS signals associated with each process; 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 it to the base station, including: the The terminal obtains the channel estimation value of one or more CSI-RS signals associated with each process according to the received CSI-RS signal; the terminal obtains the channel estimation value of one or more CSI-RS signals associated with each process, Channel status information is determined and fed back to the base station.

Optionally, the terminal determines channel status information according to channel estimation values of one or more CSI-RS signals associated with each process and feeds it back to the base station, including: the terminal according to each CSI-RS signal associated with each process. The channel estimation value of the RS signal, respectively determining the channel state information corresponding to each CSI-RS signal, and feeding back the channel state information corresponding to each CSI-RS signal to the base station; or The terminal determines the integrated channel state information according to the channel estimation value of the CSI-RS signal associated with each CSI-RS process, and feeds the integrated channel state information to the base station; The channel estimation value of the CSI-RS signal, select one or more of the CSI-RS signals, determine and feed back the channel state information corresponding to each selected CSI-RS signal, respectively The identification information is fed back to the base station.

Optionally, the terminal receives the signal of the data channel sent by the base station according to the first beamforming mode, including: if the first beamforming mode is that the data channel adopts the main downlink transmission beam for transmission, then the terminal uses the main downlink transmission beam to transmit. The downlink receive beam corresponding to the downlink transmit beam is received; or if the first beamforming method is that the data channel uses the auxiliary downlink transmit beam for transmission, the terminal uses the downlink receive beam corresponding to the auxiliary downlink transmit beam to receive; A beamforming method is that the data channel uses the main downlink transmit beam and the auxiliary downlink transmit beam for space division multiplexing transmission, then the terminal uses the downlink receive beams corresponding to the main downlink transmit beam and the secondary downlink transmit beam respectively for reception; or if the The first beamforming method is that the data channel uses the primary downlink transmit beam and the secondary downlink transmit beam for diversity transmission, and the terminal uses the downlink receive beams corresponding to the primary downlink transmit beam and the secondary downlink transmit beam respectively for reception.

For a third-party manufacturer, an embodiment of the present invention provides a large-scale antenna beam transmission method, including: a base station configures N control resource subsets for a terminal, wherein one control resource subset includes a plurality of resource units used for control channel transmission; The base station sends configuration information of the N control resource subsets to the terminal, and the configuration information includes indication information of the downlink transmission beam corresponding to each control resource subset; the base station is in the N control resource subsets In at least one control resource subset of the terminal, a control signal is sent to the terminal.

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 transmit beam corresponding to the resource subset transmits the control signal to the terminal.

In 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 resource subsets used for control channel transmission The configuration information includes the indication information of the downlink transmission beam corresponding to each control resource subset; the terminal receives the 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 the downlink receive beam for receiving the control resource subset; the terminal uses the downlink receive beam to receive control signals in 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 wave for a terminal from a plurality of downlink transmission beams beam and at least one secondary downlink transmit beam; determine a first beamforming manner corresponding to the signal of the data channel between the terminals, the first beamforming manner is to use the primary downlink transmit beam and/or the at least one secondary transmit beam The downlink transmission beam performs beamforming on the signal of the data channel; the transceiver unit is used for sending the configuration information of the main downlink transmission beam and the configuration information of the at least one auxiliary downlink transmission beam to the terminal; assigning the first beam to the terminal The indication information of the beamforming mode is carried in the control signal and sent to the terminal through the control channel, so that the terminal can receive the signal sent by the base station through the data channel according to the first beamforming mode in the control signal.

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

Optionally, the transceiver unit carries the indication information of the first beamforming mode in the control signal, and when sending to the terminal using the control channel, it is specifically used for: configuring N control resource subsets for the terminal, wherein , a control resource subset includes a plurality of resource units used 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 N control resource subsets through one or more control resource subsets in the N control resource subsets terminal, so that when the terminal detects that there is a valid control channel in the N control resource subsets, obtain In the first beamforming manner, the effective control channel refers to whether the control signal of the control channel is sent to the terminal, or is sent to the terminal group where the terminal is located.

Optionally, the processing unit is further configured to: before the instruction information of the first beamforming mode is carried in the control signal by the transceiver unit, and sent to the terminal through the control channel, determine the communication with the terminal. a second beamforming manner corresponding to the control signal of the control channel, where the second beamforming manner is to perform beamforming on the control signal of the control channel through the primary downlink transmit beam and/or the at least one secondary downlink transmit beam; The transceiver unit carries the indication information of the first beamforming mode in the control signal, and when using the control channel to send to the terminal, it is specifically used to: carry the indication information of the first beamforming mode in the control signal , and the control signal is sent to the terminal through the control channel after beamforming is performed in the second beamforming manner.

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, which are fed back by the terminal and are received by the transceiver unit. The first beamforming mode; or when the HARQ non-response NACK feedback sent by the terminal is continuously received by the transceiver unit or the feedback from the terminal is not received, the main downlink transmission beam and the at least one A secondary downlink transmit beam, and the first beamforming mode is updated.

Optionally, the transceiver unit is further configured to: send the CSI-RS signal configuration information to the terminal, where the CSI-RS signal configuration information includes configuration information of the CSI-RS signal downlink transmission beam, the CSI-RS signal downlink The transmit beam is the main downlink transmit beam and the at least one one of the secondary downlink transmit beams; use the CSI-RS signal downlink transmit beam to transmit the CSI-RS signal; receive channel state information obtained by the terminal through measurement based on the CSI-RS signal.

Optionally, the transceiver unit is further configured to: send 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 manner includes some or all of the following: beamforming the signal of the data channel by using the primary downlink transmission beam, performing beamforming on the signal of the data channel by using the secondary downlink transmission beam, and using the primary downlink transmission beam to beamform the signal of the data channel. The transmission beam and the auxiliary downlink transmission beam perform space division multiplexing beamforming on the signal of the data channel, and perform diversity beamforming on the signal of the data channel through the main downlink transmission beam and the auxiliary downlink transmission beam.

Optionally, the second beamforming manner includes some or all of the following: performing beamforming on the control signal of the control channel by using the primary downlink transmit beam, performing beamforming on the control signal of the control channel by using the secondary downlink transmit beam, The primary downlink transmit beam and the secondary downlink transmit beam perform diversity beamforming on the control signal of the control channel.

In 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 transmit beam and configuration information of at least one secondary downlink transmit beam sent by a base station; receive a control signal sent by the base station , the control signal includes the first beamforming mode corresponding to the signal of the data channel between the base station and the terminal, and the first beamforming mode is to transmit through the primary downlink transmission beam and/or the at least one secondary downlink transmission beam The beam is used for beamforming the signal of the data channel; the processing unit is used for the main downlink transmission wave sent by the base station received by the transceiver unit The configuration information of the beam and the configuration information of at least one secondary downlink transmit beam are determined to determine the main downlink transmit beam and at least one secondary downlink transmit beam; according to the first beamforming method, the transceiver unit receives the transmission from the base station through the data channel signal of.

Optionally, when the transceiver unit receives the control signal sent by the base station, it is specifically configured to: receive the control signal beamformed in the second beamforming manner and sent by the base station through the control channel between the base station and the terminal, The second beamforming manner is to perform beamforming on the control signal of the control channel through the primary downlink transmit beam and/or the at least one secondary downlink transmit 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 the CSI-RS signal downlink transmission beam, the CSI-RS signal The downlink transmission beam is one of the primary downlink transmission beam and the at least one auxiliary 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 according to The CSI-RS downlink receiving beam receives the CSI-RS signal sent by the base station through the transceiver unit; obtains the channel estimation value according to the CSI-RS signal received through the transceiver unit, and obtains the channel state information according to the channel estimation value It is sent 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; according to the association indication information, determine One or more CSI-RS signals associated with each process; When the processing unit obtains the channel estimation value according to the CSI-RS signal received by the transceiver unit, and obtains the channel state information according to the channel estimation value and sends it to the base station through the transceiver unit, it is specifically used for: receiving according to the transceiver unit The received CSI-RS signal, obtain the channel estimation value of one or more CSI-RS signals associated with each process; according to the channel estimation value of one or more CSI-RS signals associated with each process, determine the channel state information and Feed back to the base station through the transceiver unit.

Optionally, when the processing unit determines the channel state information according to the channel estimation value of one or more CSI-RS signals associated with each process and feeds it back to the base station through the transceiver unit, it is specifically used for: according to each process The associated channel estimation value of each CSI-RS signal, respectively determining the channel state information corresponding to each CSI-RS signal, and feeding back the channel state information corresponding to each CSI-RS signal to the base station; or according to each CSI-RS signal - The channel estimation value of the CSI-RS signal associated with the RS process to determine the integrated channel state information, and the integrated channel state information is fed back to the base station; or according to the channel estimation value of each CSI-RS signal associated with each process , select one or more of the CSI-RS signals, determine and feed back channel state information corresponding to each of the selected CSI-RS signals, and feed back the identification information of each of the selected CSI-RS signals 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, it is specifically used for: if the first beamforming mode is that the data channel adopts the main downlink transmission For beam transmission, the downlink receive beam corresponding to the main downlink transmit beam is used to receive through the transceiver unit; or if the first beamforming method is that the data channel uses the secondary downlink transmit beam for transmission, then The downlink receiving beam corresponding to the auxiliary downlink transmission beam is received by the transceiver unit; or if the first beamforming mode is that the data channel uses the main downlink transmission beam and the auxiliary downlink transmission beam for space division multiplexing transmission, the main downlink transmission beam is used for space division multiplexing transmission. The downlink receiving beams corresponding to the beam and the auxiliary downlink transmission beam respectively are received by the transceiver unit; or if the first beamforming mode is that the data channel uses the main downlink transmission beam and the auxiliary downlink transmission beam for diversity transmission, the main downlink transmission is adopted. The downlink receive beams corresponding to the beam and the auxiliary downlink transmit beam respectively are 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 multiple resource units used for control channel transmission; a unit for sending configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of the downlink transmission beam corresponding to each control resource subset; at least one of the N control resource subsets Within a subset of control resources, a control signal is sent to the terminal.

Optionally, when the transceiver unit sends a control signal to the terminal in at least one control resource subset in the N control resource subsets, it is specifically used for: at least one control resource in the N control resource subsets The downlink transmit beam corresponding to the subset transmits the control signal to the terminal.

In 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 resource subsets used for control channel transmission. Resource unit, the configuration information includes indication information of the downlink transmission beam corresponding to each control resource subset; receiving the control information sent by the base station through at least one control resource subset in the N control resource subsets No.

Optionally, the terminal further includes a processing unit, the processing unit is configured to: determine to receive the downlink receive beam of the control resource subset according to the indication information of the downlink transmit beam corresponding to the at least one control resource subset; the transceiver unit receives When the base station transmits the control signal in at least one control resource subset in the N control resource subsets, it is specifically used for: receiving the control signal in the control resource subset with the downlink receive beam determined by the processing unit.

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

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

In an eleventh aspect, an embodiment of the present invention is a base station, the base station includes a memory, a processor, and a transceiver; wherein, the memory is used to store a computer-readable program; The processor executes the method performed by the base station in a large-scale antenna beam transmission method provided by the third-party manufacturer by running the program in the memory; the transceiver is used for receiving and transmitting data under the control of the processor.

In a twelfth aspect, an embodiment of the present invention is a terminal, 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 in the fourth aspect is completed; the transceiver is used for receiving and transmitting data under the control of the processor.

In this 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 beamforming mode corresponding to the signal of the data channel between the terminals , carry the first beamforming method in the control signal, and send it to the terminal through the control channel, so that the terminal can receive the signal sent by the base station through the data channel according to the first beamforming method in the control signal, wherein the first beam The shaping method is to perform beam shaping on the signal of the data channel through the main downlink transmission beam and/or at least one auxiliary downlink transmission 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 beamforming method is used to beamform the signal, 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 unit

502, 602, 702, 802: transceiver unit

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the embodiments will be described below A brief introduction is made to the drawings that need to be used in the following description. Obviously, the drawings in the following description are only some embodiments of the present invention. Additional drawings can be obtained from these drawings.

1 is a schematic diagram of a system architecture to which an embodiment of the present invention is applicable; FIG. 2 is a flowchart of a large-scale antenna beam transmission method provided by an embodiment of the present invention; FIG. 3 is a flowchart of a large-scale antenna beam transmission method provided by 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. 7 is an implementation of the present invention A schematic diagram of a base station provided by an example; 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 embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those 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, for example: a GSM (Global System of Mobile Communication, global mobile communication) system, a CDMA (Code Division Multiple Access, code division multiple access) system, a WCDMA (Wideband) system Code Division Multiple Access, Broadband Code Division Multiple Access) GPRS (General Packet Radio Service, General Packet Radio Service) system, LTE (Long Term Evolution, Long Term Evolution) system, LTE FDD (Frequency Division Duplex, Frequency Division Duplex) system, LTE TDD (Time Division Duplex, Time Division Duplex), UMTS (Universal) Mobile Telecommunication System), WiMAX (Worldwide Interoperability for Microwave Access, Worldwide Interoperability for Microwave Access) communication system, and future 5G communication systems.

FIG. 1 exemplarily shows a schematic diagram of a system architecture to which the embodiment of the present invention is applicable. 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 connected by wireless .

Any one of the terminal 102, the terminal 103 and the terminal 104 can communicate with one or more core networks via a RAN (Radio Access Network, radio access network). Inbound 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 SIP (Session Initiation Protocol, Session Initiation Protocol) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal Digital Assistant, personal digital word processing), a wireless Handheld devices with communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, etc.

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

Beamforming is a signal preprocessing technology based on antenna arrays. Beamforming generates directional beams by adjusting the weighting coefficients of each element in the antenna array, so that significant array gain can be obtained. Therefore, beamforming technology has great advantages in extending coverage, improving edge throughput and interference suppression.

The embodiments of the present invention will be 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 main downlink transmission beam and the configuration information of at least one auxiliary downlink transmission beam to the terminal; Step 203, the terminal receives the configuration information of the main downlink transmission beam and at least one auxiliary downlink transmission beam sent by the base station. the configuration information, determine the main downlink transmission beam and at least one auxiliary downlink transmission beam; Step 204, the base station determines the first beamforming mode corresponding to the signal of the data channel between the terminals, and the first beamforming mode is Perform beamforming on the signal of the data channel through the primary downlink transmit beam and/or the at least one secondary downlink transmit beam; Step 205, the base station carries the indication information of the first beamforming mode in the control signal, and through the control The channel is sent to the terminal; Step 206, the terminal receives the control signal sent by the base station, and according to the first beamforming mode in the control signal, determines that the mode of receiving the signal is to receive the signal through the first beamforming mode; Step 207, the base station The signal is sent to the terminal through the data channel by the first beamforming method terminal; Step 208, the terminal receives the signal through the first beamforming manner.

In the above step 201, the base station determines the primary downlink transmit beam and at least one secondary downlink transmit beam for a terminal, and the specific manners include at least the following:

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

Training process:

個候選的下行發送波束，每個下行波束對應一組波束賦形權值，第n個波束的發送波束賦形權值為

，其中K是波束賦形的天線振子數，可以小於基地台的天線振子數。基地台可以為每個候選的下行發送波束發射一個下行波束訓練信號。例如對於

個下行發送波束，基地台可以發送

個下行波束訓練信號。這

個下行波束訓練信號之間可以TDM(Time Division Multiplexing，時分複用)、FDM(Frequency Division Multiplexing，頻分複用)、CDM(Code Division Multiplexing，碼分複用)，或者各種複用方式的組合。例如，在以OFDM(Orthogonal Frequency Division Multiplexing，正交頻分複用)為基礎的系統中，

個訓練信號可以佔用

個OFDM符號，每個訓練信號佔用1個OFDM符號。 1) The base station sends a downlink beam training signal to the terminal. Shared by base station

candidate downlink transmit beams, each downlink beam corresponds to a set of beamforming weights, and the transmit beamforming weight of the nth beam is

, where K is the number of beamforming 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 transmit beam. For example for

Downlink transmit beams, the base station can transmit

A downlink beam training signal. 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, Orthogonal Frequency Division Multiplexing),

training signals can occupy

OFDM symbols, each training signal occupies 1 OFDM symbol.

The training signal of each downlink transmit beam is sent out after being shaped by the beamforming weight corresponding to the beam. In the subsequent description process, "transmitting with a beam", "transmitting on a beam", "transmitting with a beam", "transmitting through a beamforming", etc. all refer to the beamforming of the signal corresponding to the beam After the weight is shaped, it is sent from the physical antenna. Assuming that the signal to be sent on a resource unit is s, the signal after the nth beamforming is: y =[ y ₁ y ₂ … y _K ] ^T = W _ns , _where y k will be mapped to the antenna element issued on k .

The beam training signal is sent periodically or aperiodically.

2) The terminal receives the downlink beam training signal sent by the base station, and obtains the 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 identifier of the downlink transmit beam, such as the number of the downlink transmit beam. According to different multiplexing modes of downlink beams/beam training signals, the information of downlink transmit beams fed back by the terminal may be different. For example, the downlink beam training signal is time-division multiplexed on different OFDM symbols or subframes, and the terminal measures and feeds back downlink time information. For another example, the downlink beamforming training signals are multiplexed in different frequency resources, and the terminal measures and feeds back downlink frequency information. The downlink transmit beam related information may further include downlink transmit beam training signal strength information received by the terminal, such as received signal power level and the like.

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

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

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

Mode 2: The base station receives the recommended downlink transmit beam information reported by the terminal, and determines the main downlink transmit beam and at least one secondary downlink transmit beam for the terminal based on the recommended downlink transmit beam information

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

Then the terminal sends the recommended downlink transmit beams to the base station, and sends the signal strength information corresponding to these recommended downlink transmit beams to the base station, and the base station determines one main downlink transmit beam and at least one of the recommended downlink transmit beams to the base station. Secondary downlink transmit beam.

And, after that, the terminal determines the corresponding downlink receive beam for each recommended downlink transmit beam (of course, it can also be a corresponding downlink receive beam for all the downlink transmit beams, not limited to the recommended downlink receive beams). transmit beam).

Moreover, for a downlink beam training signal, the terminal may also try to use each downlink receive beam to receive it respectively, and select the downlink receive beam with the strongest received signal power as the downlink receive beam corresponding to the downlink transmit beam.

Mode 3: The base station determines the primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal based on the reciprocity of the uplink and downlink signals

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

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

Specifically, the base station may select the downlink transmit beam corresponding to the uplink receive beam with the highest received 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 transmit beam.

Manner 4: The base station determines the primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal based on the channel state information fed back by the terminal during the CSI-RS signal feedback process.

The following is a feedback process of the CSI-RS (Channel state information reference signals, channel state information reference signal) 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. Determining methods can be:

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

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 corresponding relationship between the uplink receive beam and the downlink transmit beam of the same terminal (between the weight of the uplink receive beam and the weight of the downlink transmit beam), and the The correspondence is known to the base station. The base station receives the data signal and/or control signal sent by the terminal, determines the uplink receive beam, and then determines the corresponding downlink transmit beam (determines the weight of the downlink transmit beam) based on the channel reciprocity and the correspondence between the uplink and downlink beams. The base station may select downlink transmit beams corresponding to several uplink receive beams with the highest received uplink signal strengths as downlink CSI-RS transmit beams.

2) The base station sends a CSI-RS signal. The base station transmits one CSI-RS signal on each downlink CSI-RS transmit beam. Each CSI-RS signal includes at least one antenna port. Sending 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 being shaped by the downlink beam.

3) The base station notifies the terminal of downlink transmit beam related information corresponding to each CSI-RS signal. The downlink transmit beam related information may be the identifier of the downlink transmit beam of the CSI-RS signal, such as the number of the downlink transmit beam. Methods of notification include:

a), the base station includes the relevant information of 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 CSI-RS can be transmitted through high-layer signaling or through physical layer signaling, such as DCI (downlink control information).

b), the base station notifies the terminal of the relevant information of the downlink CSI-RS transmission beam through an independent signaling process (referring to being independent from the configuration process of the CSI-RS). The base station further includes indication information in the configuration information of each CSI-RS, indicating which downlink CSI-RS transmission beam each CSI-RS uses for transmission. For example, if the downlink CSI-RS transmission beam includes 2 beams, then the CSI-RS The configuration information of can include 1 bit to indicate that its beam is transmitted by downlink CSI-RS transmission beam 0 or downlink CSI-RS transmission beam 1.

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

The terminal has determined the downlink receive beam corresponding to each downlink transmit beam during the training process. The terminal learns the downlink transmit beam of each CSI-RS from the received information, and then determines the downlink receive beam of each CSI-RS according to the corresponding relationship between the downlink transmit beam and the downlink receive beam.

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

The calculation of the channel state information has the following possible ways: a), each CSI-RS is calculated independently, and the terminal independently calculates the channel state information according to the channel value estimated by each CSI-RS; b), integrates multiple The channel estimates of the CSI-RS are calculated. For example, it is assumed that the data transmission from the base station to the terminal is multi-stream space division multiplexing, and each data flow is sent from a downlink CSI-RS transmission beam. Due to the interference between multiple data flows, the terminal calculates each data flow When the CQI, PMI, RI and other information of the CSI-RS need to be calculated, the interference generated by other data streams needs to be calculated by integrating the channel estimation results of multiple CSI-RSs.

For another example, assuming that the data transmission from the base station to the terminal is multi-stream diversity transmission, a Each data flow is sent from multiple downlink CSI-RS transmission beams. When calculating the CQI, PMI, RI and other information of the data flow, the terminal needs to calculate the composite result sent by multiple CSI-RS transmission beams. Therefore, it is necessary to integrate multiple CSI-RS transmission beams. - The channel estimation result of the RS is calculated.

2. CSI-RS feedback process

Manner 1: The CSI feedback process may be performed in a multi-CSI process mode (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 sending process.

2) The terminal receives the CSI process configuration information, and feeds back according to the CSI process configuration.

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 according to the description of the CSI-RS transmission process, receives the CSI-RS signal, and calculates the channel state. News.

3) The terminal feeds back channel status information to the base station according to the CSI process configuration information. Feedback takes the form of:

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 feeds back 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 certain criteria according to the channel estimation value of each CSI-RS signal associated with each process, determines and returns The channel state information corresponding to each selected CSI-RS signal is fed back, and the identification information of each selected CSI-RS signal is fed back to the base station. The selection criterion may be the strongest received signal, or the strongest transmission capability, or 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 each CSI-RS process, and feeds the integrated channel state information to the base station.

Mode 2: The CSI feedback process may also be performed in a single CSI process.

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

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

The process is as follows: the terminal determines its associated CSI-RS according to the configuration of each CSI process, then determines the downlink receive beam of the CSI-RS according to the description of the CSI-RS transmission process, receives the CSI-RS, and calculates the channel state information.

3) The terminal feeds back channel status information to the base station according to the configuration of the CSI process. Feedback takes the form of:

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 feeds back the channel state information corresponding to each CSI-RS signal to the base station.

b), the terminal according to the channel estimation of all CSI-RS signals associated with the CSI process value, select one or more CSI-RS signals according to certain criteria, determine and feed back the channel state information corresponding to each selected CSI-RS signal, and feed back the identification information of each selected CSI-RS signal to the base station. The selection criterion may be the strongest received signal, or the strongest transmission capability, or 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 the integrated channel state information back to the base station.

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, 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 primary downlink For the transmission beam, 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 secondary downlink transmission beams.

In the above 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.

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

In the above step 204, the base station determines the first beamforming mode corresponding to the signal of the data channel between the terminals, and the first beamforming mode is to use the primary downlink transmission beam and/or the at least one secondary downlink transmission beam. The signal of the data channel is beamformed.

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

Specifically, the first beamforming manner includes part or all of the following:

1), beamforming the signal of the data channel through the main downlink transmission beam;

2), beamforming the signal of the data channel through the auxiliary downlink transmission beam;

3) Perform space-division multiplexing beamforming on the signal of the data channel through the main downlink transmission beam and the auxiliary downlink transmission beam; space-division multiplexing refers to 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 transmit beam and the secondary downlink transmit beam.

Diversity refers to the beamforming transmission of a data flow on multiple downlink transmit beams.

The first beamforming mode can be specified in the initial state, for example, specifying beamforming of the data channel signal through the primary downlink transmission beam, or specifying beamforming of the data channel signal through one or more secondary downlink transmission beams , or specify that the signal of the data channel is subjected to space-division multiplexing beamforming through the main downlink transmit beam and the auxiliary downlink transmit beam, or specify that the signal of the data channel be subjected to diversity beamforming through the main downlink transmit beam and the auxiliary downlink transmit beam, and many more.

In the process of sending subsequent signals, the first beamforming mode may be updated, specifically: the base station returns the channel status information corresponding to the primary downlink transmission beam and the channel status information corresponding to at least one secondary downlink transmission beam according to the terminal. , update the first beamforming mode; or the base station continues to receive the HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) NACK (Negative Acknowledgement, non-response) feedback sent by the terminal or fails to receive the terminal's During feedback, according to the main downlink transmit beam and the at least one a secondary downlink transmit beam, and the first beamforming mode is updated.

Alternatively, the first beamforming mode can also be updated using:

The terminal receives the CSI-RS signal configuration information sent by the base station, the CSI-RS signal configuration information includes configuration information of the CSI-RS signal downlink transmission beam, and the CSI-RS signal downlink transmission beam is the main downlink transmission beam and the at least One of a secondary downlink transmit beam; the terminal determines the CSI-RS downlink receive beam corresponding to the CSI-RS signal downlink transmit beam, and receives the CSI-RS signal sent by the base station according to the CSI-RS downlink receive beam; The channel estimation value is obtained from the received CSI-RS signal, and the channel state information is obtained according to the channel estimation value and then sent to the base station; the base station updates the first beamforming mode according to the obtained channel estimation value.

Alternatively, the selection may also be made based on the channel status information returned 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 transmit beam and the CSI process (CSI-RS) of the secondary downlink transmit beam reported by the terminal, and selects the beam with higher CQI for Data transfer.

Or, the base station selects the 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 transmit beam and the secondary downlink transmit beam can be selected for transmit diversity transmission, that is, the same data flow is simultaneously transmitted from the primary downlink transmit beam and the secondary downlink transmit beam.

In the above step 205, 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.

Specifically, there are at least the following two ways to realize the first beamforming way Send to terminal:

method one

Step A, the base station configures N control resource subsets for the terminal, wherein one control resource subset includes a plurality of resource units used 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 mode in the terminal. In the control signal, it 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 there is an effective control channel in the N control resource subsets, obtains the control signal in the control signal. In the first beamforming manner, the effective control channel refers to whether the control signal of the control channel is sent to the terminal, or is sent to the terminal group where the terminal is located.

Method 2

Step A, the base station determines a second beamforming mode corresponding to the control signal of the control channel between the terminals, and the second beamforming mode is to pair the control channel with the primary downlink transmit beam and/or at least one secondary downlink transmit beam In particular, the second beamforming method includes some or all of the following: 1), beamforming the signal of the data channel through the main downlink transmission beam; 2), through the auxiliary downlink transmission beam pair The signal of the data channel is subjected to beamforming; 3), the signal of the data channel is subjected to diversity beamforming through the primary downlink transmission beam and the auxiliary downlink transmission beam.

Step B, the base station carries the indication information of the first beamforming mode to the controller; In the control signal, after the control signal is beamformed by the second beamforming method, it is sent to the terminal through the control channel.

That is, after the base station performs beamforming on the control signal through the second beamforming method, the control signal is sent to the terminal through the control channel, wherein the control signal includes the beamforming method for the terminal to receive the data sent by the base station through the data channel. Ground, the control signal includes a first beamforming manner.

The base station transmits a control signal including instruction information of the beamforming mode of the data channel transmission to the terminal through the control channel. For example, the indication information about the beamforming mode of the data channel transmission contained in the control channel is represented by 2 bits, which can be represented according to the methods 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 mode in the control signal, that the mode of receiving the signal is to receive the signal through the first beamforming mode.

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

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

The terminal receives the signal sent by the base station. The first beamforming mode is used for reception.

Possible ways include: a), if the base station beamforms the signal of the data channel through the main downlink transmit beam, the terminal uses the downlink receive beam corresponding to the main downlink transmit beam to receive; b), if the base station passes the auxiliary downlink The transmit beam performs beamforming on the signal of the data channel, and the terminal uses the downlink receive beam corresponding to the auxiliary downlink transmit beam to receive; c) If the base station uses the main downlink transmit beam and the secondary downlink transmit beam to null the signal of the data channel Demultiplexing beamforming, the terminal uses the downlink receiving beam corresponding to the main downlink transmission beam and the auxiliary downlink transmission beam to receive; d) If the base station uses the main downlink transmission beam and the auxiliary downlink transmission beam to perform diversity on the signals of the data channel In beamforming, the terminal uses the downlink receive beam corresponding to the primary downlink transmit beam and the secondary downlink transmit beam for reception.

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

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

In this 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 beamforming mode corresponding to the signal of the data channel between the terminals , carry the first beamforming method in the control signal, and send it to the terminal through the control channel, so that the terminal can receive the signal sent by the base station through the data channel according to the first beamforming method in the control signal, wherein the first beam Shaped square The formula is to beamform the signal of the data channel through the main downlink transmission beam and/or at least one auxiliary downlink transmission beam. It can be seen that when the base station sends the control signal and the data signal to the terminal, the beamforming method can be flexibly selected Beamforming the signal 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: The base station configures N control resource subsets for the terminal, wherein one control resource subset Including a plurality of resource units for control channel transmission; Step 302, the base station sends the configuration information of the N control resource subsets to the terminal, and the configuration information includes the indication of the downlink transmission beam corresponding to each control resource subset information; Step 303, the terminal receives the configuration information of 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 in the N control resource subsets; Step 305: The terminal receives the control signal sent by the base station through at least one control resource subset in the N control resource subsets.

In the above step 305, it can be implemented in the following ways:

The terminal determines to receive the downlink receive beam of the control resource subset according to the downlink transmit beam indication information of the at least one control resource subset; the terminal uses the downlink receive beam to receive the control signal of the control resource 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.

CDM, TDM, or FDM multiplexing may be used among the control resource subsets. Preferably, TDM multiplexing is performed between the control resource subsets.

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

In the embodiment of the present invention, the base station can send the control signal to the terminal through the control resource subset, and the sending can be sent on one control resource subset, or can be sent on multiple control resource subsets, thereby realizing Flexible sending of control signals improves 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 , comprising: a processing unit 501, 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 Sending beams; determining a first beamforming mode corresponding to the signals of the data channel between terminals, where the first beamforming mode is to use the primary downlink transmission beam and/or the at least one secondary downlink transmission beam for the data channel The signal of the beamforming is beamformed; the transceiver unit 502 is configured to send the configuration information of the main downlink transmission beam and the configuration information of the at least one auxiliary downlink transmission beam to the terminal; the indication information of the first beamforming mode is carried The control signal is sent 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.

Optionally, the transceiver unit 502 is specifically configured to: send a training signal to the terminal according to the multiple downlink transmission beams, so that the terminal can determine the signal strength information of the multiple downlink transmission beams and send it to the base station; the The processing unit 501 determines, from the multiple downlink transmit beams, the When the primary downlink transmit beam and at least one secondary downlink transmit beam are used, it is specifically used to: send a training signal to the terminal through the transceiver unit 502 according to the multiple downlink transmit beams, so that the terminal can determine the signal strength of the multiple downlink transmit beams and send the information to the base station; according to the signal strength information of the multiple downlink transmission beams received by the transceiver unit 502, determine the main downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal from the multiple downlink transmission beams or receive the recommended downlink transmission beam information reported by the terminal through the transceiver unit 502; determine the main downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal based on the recommended downlink transmission beam information; or according to the transceiver The data signal and/or control signal of the terminal received by the unit 502 determines the signal strength information of multiple uplink receiving beams; according to the determined signal strength information of the multiple uplink receiving beams, determines the main downlink transmit beam and at least one secondary downlink transmission beam; or at least one downlink transmission beam is selected from the multiple downlink transmission beams as the downlink channel state information reference signal CSI-RS transmission beam, and the transceiver unit 502 uses the downlink CSI-RS transmission beam Send a CSI-RS signal to the terminal; receive the channel state information determined for the CSI-RS signal sent by the terminal through the transceiver unit 502, and according to the channel state information, determine the main downlink transmission beam for the terminal and at least one Secondary downlink transmit 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, according to the channel state information, the primary downlink transmit beam and at least one secondary transmission beam for the terminal. When the downlink transmission beam is used, it is specifically used for: receiving, by the transceiver unit 502, the communication signal determined for each CSI-RS signal sent by the terminal. channel status information, and according to the channel status information, the downlink CSI-RS transmit beam corresponding to the CSI-RS signal with the best channel quality in the channel status information is taken as the primary downlink transmit beam, and the 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 are used as the at least one secondary downlink transmission beam.

Optionally, the transceiver unit 502 carries the indication information of the first beamforming mode in the control signal, and when sending to the terminal using the control channel, it is specifically configured to: configure N control resource subsets for the terminal, Wherein, 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 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 through one or more control resource subsets in the N control resource subsets. the terminal, so that the terminal obtains the first beamforming mode in the control signal when monitoring that there is an effective control channel in the N control resource subsets, the effective control channel means that the control signal of the control channel is sent to the terminal, or sent to the terminal group where the terminal belongs.

Optionally, the processing unit 501 is further configured to: before the instruction information of the first beamforming mode is carried in the control signal by the transceiver unit 502 and sent to the terminal through the control channel, determine the communication with the terminal. The second beamforming mode corresponding to the control signal of the control channel between the two, the second beamforming mode is to perform the control signal of the control channel through the main downlink transmission beam and/or the at least one auxiliary downlink transmission beam. Beamforming; the transceiver unit 502 carries the indication information of the first beamforming mode in the control signal, and when using the control channel to send to the terminal, it is specifically used for: the indication information of the first beamforming mode It is carried in the control signal, and after beamforming is performed on the control signal by the second beamforming method, the control signal 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, which are fed back by the terminal and are received by the transceiver unit 502, Update the first beamforming mode; or when the HARQ non-response NACK feedback sent by the terminal is continuously received through the transceiver unit 502 or the feedback from the terminal is not received, transmit the beam according to the main downlink and For the at least one secondary downlink transmit beam, the first beamforming mode is updated.

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 the CSI-RS signal downlink transmission beam, 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 CSI-RS signal is used to transmit the CSI-RS signal downlink transmission beam; the channel obtained by the terminal's measurement based on the CSI-RS signal is received Status information.

Optionally, the transceiver unit 502 is further configured to: send 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 manner includes part or all of the following: The data channel signal is beamformed by the primary downlink transmit beam, the data channel signal is beamformed by the secondary downlink transmit beam, and the data channel signal is space-division multiplexed by the primary downlink transmit beam and the secondary downlink transmit beam Beamforming: Diversity beamforming is performed on the signal of the data channel through the primary downlink transmit beam and the secondary downlink transmit beam.

Optionally, the second beamforming manner includes some or all of the following: performing beamforming on the control signal of the control channel by using the primary downlink transmit beam, performing beamforming on the control signal of the control channel by using the secondary downlink transmit beam, The primary downlink transmit beam and the secondary downlink transmit beam perform diversity beamforming on the control signal of the control channel.

In this 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 beamforming mode corresponding to the signal of the data channel between the terminals , carry the first beamforming method in the control signal, and send it to the terminal through the control channel, so that the terminal can receive the signal sent by the base station through the data channel according to the first beamforming method in the control signal, wherein the first beam The shaping method is to perform beam shaping on the signal of the data channel through the main downlink transmission beam and/or at least one auxiliary downlink transmission 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 beamforming method is used to beamform the signal, 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 also provides a terminal, as shown in FIG. 6 , including: a transceiver unit 602 configured to receive configuration information of a primary downlink transmit beam and a configuration of at least one secondary downlink transmit beam sent by a base station information; receive the control signal sent by the base station, the control signal includes the first beamforming corresponding to the signal of the data channel between the base station and the terminal The first beamforming method is to perform beamforming on the signal of the data channel through the main downlink transmission beam and/or the at least one auxiliary downlink transmission beam; The configuration information of the main downlink transmission beam and the configuration information of at least one auxiliary downlink transmission beam sent by the base station determine the main downlink transmission beam and the at least one auxiliary downlink transmission beam; according to the first beamforming method, the transceiver unit 602 Receive the signal sent by the base station through the data channel.

Optionally, when the transceiver unit 602 receives the control signal sent by the base station, it is specifically used for:

Receive the control signal sent by the base station through the control channel with the terminal and beamformed in a second beamforming manner, where the second beamforming manner is to transmit the beam through the primary downlink and/or the at least one secondary The downlink transmit beam performs beamforming on the control signal of the control channel.

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 the CSI-RS signal downlink transmission beam, the CSI-RS signal configuration information The signal downlink transmission beam is one of the primary 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 receive the CSI-RS signal sent by the base station through the transceiver unit 602 according to the CSI-RS downlink receiving beam; obtain the channel estimation value according to the CSI-RS signal received through the transceiver unit 602, and obtain the channel estimation value according to the channel estimation value The channel status information is then 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 one or more CSI-RS signals The association indication information; according to the association indication information, determine one or more CSI-RS signals associated with each process; the processing unit 601 obtains the channel estimation value according to the CSI-RS signal received by the transceiver unit 602, and according to When the channel estimation value is sent to the base station through the transceiver unit 602 after the channel state information is obtained, it is specifically used to: obtain one or more CSI-RS signals associated with each process according to the CSI-RS signal received by the transceiver unit 602 Channel estimation value of the RS signal; according to the channel estimation value of one or more CSI-RS signals associated with each process, determine the channel status information and feed it 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 feeds it back to the base station through the transceiver unit 602, it is specifically used for: according to each process. The channel estimation value of each CSI-RS signal associated with each process, respectively determine the channel state information corresponding to each CSI-RS signal, and feed back the channel state information corresponding to each CSI-RS signal to the base station; The channel estimation value of the CSI-RS signal associated with each CSI-RS process, determine the integrated channel state information, and feed 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 CSI-RS signals, determine and feed back the channel state information corresponding to each selected CSI-RS signal, and feed back the identification information of each selected CSI-RS signal to the base station tower.

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 manner, it is specifically used for:

If the first beamforming method is that the data channel uses the main downlink transmit beam for transmission, the downlink receive beam corresponding to the main downlink transmit beam is used to receive through the transceiver unit 602; or if the first beamforming method is that the data channel uses Auxiliary downlink transmission beam transmission, the downlink receiving beam corresponding to the auxiliary downlink transmission beam is used to receive through the transceiver unit 602; or if the first beamforming mode is the data channel, the main downlink transmission beam and the auxiliary downlink transmission beam are used for space division For multiplexing transmission, the downlink receiving beams corresponding to the main downlink transmission beam and the auxiliary downlink transmission beam respectively are used to receive through the transceiver unit 602; or if the first beamforming mode is that the data channel uses the main downlink transmission beam and the auxiliary downlink transmission beam If the beam performs diversity transmission, the downlink receive beams corresponding to the primary downlink transmit beam and the secondary downlink transmit beam respectively are used to receive through the transceiver unit 602 .

In this 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 beamforming mode corresponding to the signal of the data channel between the terminals , carry the first beamforming method in the control signal, and send it to the terminal through the control channel, so that the terminal can receive the signal sent by the base station through the data channel according to the first beamforming method in the control signal, wherein the first beam The shaping method is to perform beam shaping on the signal of the data channel through the main downlink transmission beam and/or at least one auxiliary downlink transmission 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 beamforming method is used to beamform the signal, 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 , including: a processing unit 701 configured to configure N control resource subsets for the terminal, wherein one control resource The source subset includes a plurality of resource units used for control channel transmission; the transceiver unit 702 is used to send the configuration information of the N control resource subsets to the terminal, and the configuration information includes the corresponding information of each control resource subset. Indication information of the downlink transmission beam; in at least one control resource subset of the N control resource subsets, send a control signal to the terminal.

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

In the embodiment of the present invention, the base station can send the control signal to the terminal through the control resource subset, and the sending can be sent on one control resource subset, or can be sent on multiple control resource subsets, thereby realizing Flexible sending of control signals improves 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 , comprising: a transceiver unit 802 configured to receive configuration information of N control resource subsets sent by a base station, wherein one control resource subset The set includes a plurality of resource units used for control channel transmission, and the configuration information includes the indication information of the downlink transmission beam corresponding to each control resource subset; receiving the base station through at least one control resource in the N control resource subsets Control signals sent within a subset.

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

In the embodiment of the present invention, the base station can send the control signal to the terminal through the control resource subset, and the sending can be sent on one control resource subset, or can be sent on multiple control resource subsets, thereby realizing Flexible sending of control signals improves transmission efficiency and stability.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine for causing the instructions to be executed by the processor of the computer or other programmable data processing device Means are created for implementing the functions specified in the flow or flows of the flowcharts and/or the blocks or blocks of the block diagrams.

These computer program instructions may also be stored in computer readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction means , the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.

These computer program instructions can also be loaded into a computer or other programmable data processing device, so that a series of operational steps are performed on the computer or other programmable device to Generate a computer-implemented process whereby instructions executing on a computer or other programmable device provide steps for implementing the functions specified in a flow or blocks of a flowchart and/or a block or blocks of a block diagram .

Although the preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of the present invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

201-208: Steps

Claims (40)

A large-scale antenna beam transmission method, comprising: a base station determining a main downlink transmission beam and at least one auxiliary downlink transmission beam for a terminal from a plurality of downlink transmission beams; the base station configures the main downlink transmission beam information and configuration information of the at least one secondary downlink transmit beam are sent to the terminal; the base station determines a first beamforming mode corresponding to the signal of the data channel between the terminal, and the first beamforming mode is to use the The main downlink transmit beam and/or the at least one secondary downlink transmit beam perform beamforming on 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 data channel through the control channel. the terminal, so that the terminal receives the signal sent by the base station through the data channel according to the first beamforming manner. The large-scale antenna beam transmission method according to claim 1, wherein the base station determines a main downlink transmission beam and at least one secondary downlink transmission beam for the terminal from a plurality of downlink transmission beams, comprising: the base station according to the multiple downlink transmission beams. Each downlink transmit beam sends training signals to the terminal, so that the terminal determines the signal strength information of the multiple downlink transmit beams and sends it to the base station; the base station receives the signal strength information of the multiple downlink transmit beams according to the received signal strength information , determine the main downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal from the multiple downlink transmission beams; or the base station receives the recommended downlink transmission beam information reported by the terminal, based on the recommended downlink transmission beam information to determine the primary downlink transmit beam and at least one secondary transmit beam for the terminal Downlink transmit beam; or the base station determines the signal strength information of multiple uplink receive beams according to the received data signal and/or control signal of the terminal; the base station determines the signal strength information of multiple uplink receive beams according to the determined signal strength information, Determine the primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal; or the base station selects at least one downlink transmit beam from the multiple downlink transmit beams as the downlink channel status information reference signal CSI-RS transmit beam, and Use the downlink CSI-RS transmission beam to send 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 channel for the terminal according to the channel state information. Downlink transmit beam and at least one secondary downlink transmit beam. The large-scale antenna beam transmission method according to claim 2, wherein the base station receives the channel state information determined for the CSI-RS signal sent by the terminal, and determines the primary downlink for the terminal according to the channel state information The transmission beam and at least one secondary downlink transmission beam include: 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, maximizes the channel quality in the channel state information. The downlink CSI-RS transmission beam corresponding to the best CSI-RS signal is used as the main downlink transmission beam, and one of the downlink CSI-RS transmission beams corresponding to the CSI-RS signal with the best channel quality in the channel state information is used as the main downlink transmission beam. or multiple downlink CSI-RS transmission beams as the at least one secondary downlink transmission beam. The large-scale antenna beam transmission method according to claim 1, wherein the base station carries the indication information of the first beamforming mode in a control signal, and sends it through the control channel To the terminal, including: the base station configures N control resource subsets for the terminal, wherein a control resource subset includes a plurality of resource units for control channel transmission, and a control resource subset and a downlink transmission beam association; the base station sends the configuration information of the N control resource subsets to the terminal, so that the terminal can monitor the N control resource subsets; the base station indicates the first beamforming mode It is carried in the control signal and sent to the terminal through one or more control resource subsets in the N control resource subsets, so that when the terminal detects that a valid control channel exists in the N control resource subsets, obtain The indication information of the first beamforming mode in the control signal, and 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 mode in the control signal, and before sending it to the terminal through the control channel, further comprising: the base station 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 to use the primary downlink transmit beam and/or the at least one secondary downlink transmit beam for the control channel The base station carries the instruction information of the first beamforming mode in the control signal, and sends it to the terminal through the control channel, including: the base station is the first beamforming mode. The indication information is carried in the control signal, and after the control signal is beamformed by the second beamforming method, it passes through the control channel sent to the terminal. The large-scale antenna beam transmission method according to claim 1, wherein the method further comprises: the base station according to the channel status information corresponding to the primary downlink transmit beam and the channel corresponding to the at least one secondary downlink transmit beam fed back by the terminal Status information, update the first beamforming mode; or the base station continuously receives the HARQ non-acknowledgement NACK feedback sent by the terminal or does not receive the feedback from the terminal, transmits the beam according to the main downlink and the at least one secondary downlink transmit beam, and update the first beamforming manner. 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, the CSI-RS signal configuration information including the CSI-RS signal downlink Configuration information of the transmission beam, the CSI-RS signal downlink transmission beam is one of the primary downlink transmission beam and the at least one secondary downlink transmission beam; the base station uses the CSI-RS signal downlink transmission beam to transmit the CSI-RS signal; The base station receives channel state information obtained by the terminal based on the measurement of the CSI-RS signal. The large-scale antenna beam transmission method according to claim 7, wherein the method further comprises: the base station sending CSI process configuration information to the terminal, the CSI process configuration information including the association of one or more CSI-RS signals Indication information; the base station receives channel state information obtained 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 The first beamforming method includes some or all of the following: beamforming the signal of the data channel through the main downlink transmission beam, beamforming the signal of the data channel through the auxiliary downlink transmission beam, and using the main downlink transmission beam and the auxiliary downlink transmission beam. The transmission beam performs space division multiplexing beamforming on the signal of the data channel, and performs diversity beamforming on the signal of the data channel through the primary downlink transmission beam and the auxiliary downlink transmission beam. The large-scale antenna beam transmission method as described in claim 5, wherein the second beamforming manner includes part or all of the following: beamforming the control signal of the control channel through the primary downlink transmission beam, and transmitting through the auxiliary downlink The beam forms the control signal of the control channel, and performs diversity beamforming on the control signal of the control channel through the primary downlink transmit beam and the auxiliary downlink transmit beam. A large-scale antenna beam transmission method, comprising: a terminal receiving configuration information of a main downlink transmission beam and configuration information of at least one auxiliary downlink transmission beam sent by a base station, and determining the main downlink transmission beam and at least one auxiliary downlink transmission beam. beam; the terminal receives the control signal sent by the base station, the control signal includes the first beamforming mode corresponding to the signal of the data channel between the base station and the terminal, and the first beamforming mode is to pass the The primary downlink transmit beam and/or the at least one secondary downlink transmit beam perform beamforming on the signal of the data channel; the terminal receives the signal sent by the base station through the data channel according to the first beamforming manner. The large-scale antenna beam transmission method of claim 11, wherein the terminal receives the base The control signal sent by the base station includes: the terminal receives the control signal sent by the base station through the control channel between the base station and the terminal and is beamformed by a second beamforming method, where the second beamforming method is to pass The primary downlink transmit beam and/or the at least one secondary downlink transmit beam perform beamforming on the control signal of the control channel. The large-scale antenna beam transmission method according to claim 11, wherein the method further comprises: the terminal receiving CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes downlink CSI-RS signals Configuration information of the transmission beam, the CSI-RS signal downlink transmission beam is one of the primary downlink transmission beam and the at least one secondary downlink transmission beam; the terminal determines the CSI-RS signal corresponding to the CSI-RS signal downlink transmission beam Downlink receive beam, and receive the CSI-RS signal sent by the base station according to the CSI-RS signal downlink receive beam; 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 then sent to the base station. The large-scale antenna beam transmission method according to claim 13, wherein the method further comprises: the terminal receiving CSI process configuration information sent by the base station, where the CSI process configuration information includes one or more CSI-RS signals. Association indication information; the terminal determines one or more CSI-RS signals associated with each process according to the association indication 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 then sent to the base station, including: The terminal obtains channel estimation values of one or more CSI-RS signals associated with each process according to the received CSI-RS signals; the terminal estimates channel estimation values of one or more CSI-RS signals associated with each CSI process value, determine the channel status information and feed it back to the base station. The large-scale antenna beam transmission method according to claim 14, wherein the terminal determines channel state information according to channel estimation values of one or more CSI-RS signals associated with each CSI process and feeds back to the base station, 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 feeds back the channel state information corresponding to each CSI-RS signal to the base station or the terminal determines the integrated channel state information according to the channel estimation value of the CSI-RS signal associated with each CSI process, and feeds the integrated channel state information to the base station; or the terminal determines the integrated channel state information according to the channel estimation values of CSI-RS signals, select one or more CSI-RS signals among them, determine and feed back the channel state information corresponding to 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 receives the signal of the data channel sent by the base station according to the first beamforming method, including: if the first beam The forming method is that the data channel uses the main downlink transmit beam for transmission, and the terminal uses the downlink receive beam corresponding to the main downlink transmit beam for reception; or if the first beamforming method is that the data channel uses the auxiliary downlink transmit beam for transmission, then the The terminal uses the downlink receiving beam corresponding to the auxiliary downlink transmission beam for reception; or if the first beamforming mode is that the data channel uses the main downlink transmission beam and the auxiliary downlink transmission beam for space division multiplexing transmission, the terminal uses the main downlink transmission beam for space division multiplexing transmission. The downlink receiving beam corresponding to the beam and the secondary downlink transmit beam respectively is received; or if the first beamforming mode is that the data channel uses the primary downlink transmit beam and the secondary downlink transmit beam for diversity transmission, the terminal uses the primary downlink transmit beam and the secondary downlink transmit beam for diversity transmission. The secondary downlink transmit beams are respectively corresponding to downlink receive beams for receiving. A large-scale antenna beam transmission method, characterized in that it includes: a base station configures N control resource subsets for a terminal, wherein one control resource subset includes a plurality of resource units used for control channel transmission; The configuration information of the N control resource subsets is sent to the terminal, and the configuration information includes the 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 The 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 used for control channel transmission, the configuration information Including indication information of the downlink transmission beam corresponding to each control resource subset; the terminal receives the 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 the terminal receiving the control signal sent by the base station through at least one control resource subset of the N control resource subsets includes: the terminal according to the at least one control signal. The indication information of the downlink transmit beam corresponding to a control resource subset determines the downlink receive beam for receiving the control resource subset; the terminal uses the downlink receive beam to receive control signals in the control resource subset. A base station, characterized by comprising: a processing unit for determining a main downlink transmission beam and at least one auxiliary downlink transmission beam for a terminal from a plurality of downlink transmission beams; determining a signal corresponding to a data channel between the terminal The first beamforming method is to perform beamforming on the signal of the data channel through the main downlink transmission beam and/or the at least one auxiliary downlink transmission beam; The configuration information of the primary downlink transmission beam and the configuration information of the at least one secondary downlink transmission beam are sent to the terminal; the indication information of the first beamforming mode is carried in the control signal, and sent to the terminal through the control channel, so that the The terminal receives the signal sent by the base station through the data channel according to the first beamforming manner. 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 a plurality of downlink transmission beams, it is specifically used for: Send training signals to the terminal through the transceiver unit according to the multiple downlink transmit beams, so that the terminal can determine the signal strength information of the multiple downlink transmit beams and send it to the base station; Signal strength information of downlink transmission beams, and determine the main downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal from the multiple downlink transmission beams; or receive the recommended downlink transmission beam information reported by the terminal through the transceiver unit ; Determine the main downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal based on the recommended downlink transmission beam information; or determine a plurality of uplink receptions according to the terminal's data signal and/or control signal received by the transceiver unit Signal strength information of the beam; according to the determined signal strength information of multiple uplink receiving beams, determine the main downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal; or select at least one downlink transmission beam from the multiple downlink transmission beams The beam is used as the downlink channel state information reference signal CSI-RS transmission beam, and the downlink CSI-RS transmission beam is used by the transceiver unit to transmit the CSI-RS signal to the terminal; The channel state information determined by the RS signal, and according to the channel state information, the primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal are determined. The base station according to claim 22, wherein the processing unit receives the channel status 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 status information When the transmit beam and at least one secondary downlink transmit beam are used, they are specifically used for: The channel state information determined for each CSI-RS signal sent by the terminal is received by the transceiver unit, and according to the channel state information, the downlink CSI-RS signal corresponding to the CSI-RS signal with the best channel quality in the channel state information is received. The RS transmission beam is used as the main downlink transmission 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 status information are used as the at least one secondary downlink transmit beam. The base station according to claim 21, wherein the transceiver unit carries the indication information of the first beamforming mode in the control signal, and when it is sent to the terminal through the control channel, it is specifically used for: configuring N for the terminal control resource subsets, wherein one control resource subset includes multiple resource units used 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 can monitor the N control resource subsets; the indication information of the first beamforming mode is carried in the control signal, and the N control resource subsets are passed through 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 is a valid control channel in the N control resource subsets, it obtains the indication information of the first beamforming mode in the control signal, the valid 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 belongs. The base station according to claim 21, wherein the processing unit is further configured to: carry the indication information of the first beamforming mode in the control signal through the transceiver unit In the signal, before sending to the terminal through the control channel, determine the second beamforming mode corresponding to the control signal of the control channel between the terminals, and the second beamforming mode is to transmit the beam through the main downlink and/or The at least one auxiliary downlink transmission beam performs beamforming on the control signal of the control channel; the transceiver unit carries the indication information of the first beamforming mode in the control signal, and when sent to the terminal through the control channel, the specific It is used for: carrying the indication information of the first beamforming mode in the control signal, and after beamforming the control signal by the second beamforming mode, sending the control signal 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 status information corresponding to the primary downlink transmit beam and the at least one secondary downlink transmit beam and the at least one secondary downlink transmit beam returned by the terminal through the transceiver unit Corresponding channel status information, update the first beamforming mode; or when the hybrid automatic repeat request HARQ non-response NACK feedback sent by the terminal is continuously received through the transceiver unit or the feedback from the terminal is not received, according to the The primary downlink transmit beam and the at least one secondary downlink transmit beam update the first beamforming manner. The base station according to claim 26, wherein the transceiver unit is further configured to: send CSI-RS signal configuration information to the terminal, where the CSI-RS signal configuration information includes the configuration of the CSI-RS signal downlink transmission beam information, the CSI-RS signal downlink transmission beam is one of the primary downlink transmission beam and the at least one auxiliary downlink transmission beam; use the CSI-RS signal downlink transmission beam to transmit the CSI-RS signal; receive the terminal based on the CSI-RS signal Channel status information obtained by measuring the RS signal. The base station according to claim 27, wherein the transceiver unit is further configured to: send CSI process configuration information to the terminal, where the CSI process configuration information includes association indication information of one or more CSI-RS signals; receive Channel state information obtained by the terminal by measuring 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 manner includes part or all of the following: beamforming the signal of the data channel by using the primary downlink transmit beam, transmitting by the secondary downlink The beam forms the signal of the data channel, performs space-division multiplexing beamforming on the signal of the data channel through the main downlink transmit beam and the auxiliary downlink transmit beam, and uses the main downlink transmit beam and the auxiliary downlink transmit beam to the signal of the data channel. Diversity beamforming is performed. The base station as described in claim 27, wherein the second beamforming manner includes part or all of the following: performing beamforming on the control signal of the control channel by using the primary downlink transmit beam, and performing beamforming on the control channel by using the secondary downlink transmit beam The control signal of the control channel is beamformed, and the control signal of the control channel is subjected to diversity beamforming through the primary downlink transmission beam and the auxiliary downlink transmission beam. A terminal, characterized by comprising: a transceiver unit for 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; receiving a control signal sent by the base station, in which the control signal contains Including the first beamforming mode corresponding to the signal of the data channel between the base station and the terminal, the first beamforming mode is to transmit the beam through the main downlink and/or the at least one auxiliary downlink transmission beam performs beamforming on the signal of the data channel; the processing unit is used for the configuration information of the main downlink transmission beam and the configuration information of at least one auxiliary downlink transmission beam sent by the base station and received by the transceiver unit , determine the primary downlink transmission beam and at least one auxiliary downlink transmission beam; receive the signal sent by the base station through the data channel through the transceiver unit according to the first beamforming method. The terminal according to claim 31, wherein when receiving the control signal sent by the base station, the transceiver unit is specifically configured to: receive the second beamforming method sent by the base station through the control channel between the base station and the terminal For the control signal of beamforming, the second beamforming manner is to perform beamforming on the control signal of the control channel through the primary downlink transmit beam and/or the at least one secondary downlink transmit 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, where the CSI-RS signal configuration information includes the configuration of the CSI-RS signal downlink transmission beam information, the downlink transmission beam of the CSI-RS signal is one of the primary downlink transmission beam and the at least one auxiliary downlink transmission beam; the processing unit is further configured to: determine the CSI-RS signal corresponding to the downlink transmission beam of the CSI-RS signal. 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 the channel estimation value according to the CSI-RS signal received through the transceiver unit, and according to the channel The estimated value is sent to the base station through the transceiver unit after obtaining the channel state information. 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 Association indication information of the CSI-RS signal; according to the association indication information, determine one or more CSI-RS signals associated with each process; the processing unit obtains the channel estimation value according to the CSI-RS signal received by the transceiver unit, and When the channel state information is obtained according to the channel estimation value and sent to the base station through the transceiver unit, it is specifically used for: obtaining one or more CSI-RSs associated with each process according to the CSI-RS signal received by the transceiver unit Channel estimation value of the signal; according to the channel estimation value of one or more CSI-RS signals associated with each process, determine the channel state information and feed it back to the base station through the transceiver unit. The terminal according to claim 34, wherein, when the processing unit determines the channel state information according to the channel estimation value of one or more CSI-RS signals associated with each process and feeds it back to the base station through the transceiver unit, the specific 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 feed back the channel state information corresponding to each CSI-RS signal to the base station or according to the channel estimation value of the CSI-RS signal associated with each CSI process, determine the integrated 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, select one or more CSI-RS signals, determine and feed back the channel state information corresponding to each selected CSI-RS signal, and feed back the identification information of each selected CSI-RS signal to the base station. The terminal according to any one of claim items 31 to 35, wherein the processing unit receives the data sent by the base station through the data channel through the transceiver unit according to the first beamforming method When the signal is used, it is specifically used for: if the first beamforming mode is that the data channel uses the main downlink transmit beam for transmission, the downlink receive beam corresponding to the main downlink transmit beam is used to receive through the transceiver unit; or if the first beamforming If the first beamforming method is that the data channel uses the auxiliary downlink transmit beam for transmission, the downlink receive beam corresponding to the auxiliary downlink transmit beam is used to receive through the transceiver unit; or if the first beamforming method is for the data channel to use the main downlink transmit beam and the auxiliary downlink beam The transmission beam is space-division multiplexed for transmission, and the downlink receiving beams corresponding to the main downlink transmission beam and the auxiliary downlink transmission beam respectively are used to receive through the transceiver unit; or if the first beamforming method is the data channel, the main downlink transmission beam is used. For diversity transmission with the auxiliary downlink transmission beam, the downlink receiving beams corresponding to the main downlink transmission beam and the auxiliary downlink transmission beam respectively are used for receiving through the transceiver unit. A base station, characterized by comprising: a processing unit for configuring N control resource subsets for a terminal, wherein one control resource subset includes a plurality of resource units for control channel transmission; a transceiver unit for sending 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; at least one control resource subset in the N control resource subsets Inside, 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 of the N control resource subsets, it is specifically used for: in the N control resource subsets The downlink transmit beam corresponding to at least one control resource subset in the subset transmits the control signal to the terminal. A terminal, characterized by comprising: 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 used for control channel transmission, and the configuration The information includes indication information of the downlink transmission beam corresponding to each control resource subset; and the control signal sent by the base station through at least one control resource subset in the N control resource subsets is received. The terminal according to claim 39, wherein the terminal further comprises a processing unit, the processing unit is configured to: according to the indication information of the downlink transmission beam corresponding to the at least one control resource subset, determine to receive the downlink of the control resource subset receiving beam; when the transceiver unit receives the control signal sent by the base station through at least one control resource subset in the N control resource subsets, it is specifically used for: using the downlink receiving beam determined by the processing unit in the control resource Control signals are received within the subset.

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