WO2018059005A1

WO2018059005A1 - Large-scale antenna beam transmission method, base station and terminal

Info

Publication number: WO2018059005A1
Application number: PCT/CN2017/087809
Authority: WO
Inventors: 高秋彬; 陈润华; 拉盖施; 李传军; 李辉
Original assignee: 电信科学技术研究院
Priority date: 2016-09-30
Filing date: 2017-06-09
Publication date: 2018-04-05
Also published as: TWI757313B; CN107896123B; TW201815089A; CN107896123A

Abstract

The embodiments of the present invention relate to the field of wireless communication technologies, and in particular relate to a large-scale antenna beam transmission method, base station and terminal, used for improving transmission efficiency and enhancing reliability in large-scale antenna beam transmission, comprising: a base station determining a primary downlink sending beam and at least one secondary downlink sending beam for a terminal from a plurality of downlink sending beams; the base station determining a first beamforming mode corresponding to a data channel between the base station and the terminal, and carrying the first beamforming mode in a control signal and sending to the terminal by means of a control channel, so that the terminal receives the signal sent by the base station according to the first beamforming mode, the first beamforming mode being carrying out beamforming of a signal of the data channel by means of the primary downlink sending beam and/or at least one secondary downlink beam. It may be seen that, when the base station sends a signal to the terminal, the beamforming mode for carrying out beamforming of the signal may be flexibly selected, thereby improving efficiency of data transmission and enhancing reliability of data transmission.

Description

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

The present application claims priority to Chinese Patent Application No. 201610875801.1, the name of the invention is a large-scale antenna beam transmission method, and a Chinese patent application for a base station and a terminal, which is incorporated by reference in its entirety. In this application.

Technical field

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

Background technique

In order to further improve the MIMO (Multiple-Input Multiple-Output) technology, a large-scale antenna technology is introduced in the mobile communication system. For base stations, fully digital large-scale antennas can have up to 128/256/512 antenna elements and up to 128/256/512 transceiver units, one for each antenna element. The terminal measures channel state information and feeds back by transmitting pilot signals up to 128/256/512 antenna ports. For the terminal, an antenna array of up to 32/64 antenna elements can also be configured. Through the 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 the path loss. Especially in high-band communications, such as the 30 GHz frequency, the path loss makes the coverage of wireless signals extremely limited. With large-scale antenna technology, the coverage of wireless signals can be expanded to a practical range.

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

1) The base station transmits 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 transmit one beam training signal for each candidate downlink transmit beam, that is, a beam training signal of each candidate downlink transmit beam. The beamforming weight corresponding to the beam is shaped and then sent.

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 transmission beam, the terminal determines a corresponding downlink reception beam.

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

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

The above process can be used to determine one or more downlink transmit beams for a terminal, and determine a downlink receive beam on the terminal side, and in the data transmission process, the base station selects one downlink from the determined multiple downlink transmit beams. The beam transmits a signal to the terminal and is determined to be unchangeable after the selected downlink beam.

The problem in the above process is that after determining the downlink transmission beams corresponding to the terminal, each time the base station sends data to the terminal, the base station can only select one of the multiple downlink transmission beams to transmit the signal, and select the downlink transmission. The beam is unchangeable, which can cause serious performance bottlenecks when reliability is required to be transmitted, and the reliability is not very high.

In summary, the large-scale antenna beam transmission method in the prior art has low reliability and low transmission efficiency. technical problem.

Summary of the invention

The embodiments of the present invention provide 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.

In a first aspect, an embodiment of the present invention provides a method for transmitting a large-scale antenna beam, including:

Determining, by the base station, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal from the plurality of downlink transmit beams;

Sending, by the base station, configuration information of the primary downlink transmission beam and configuration information of the at least one secondary downlink transmission beam to the terminal;

Determining, by the base station, a first beamforming manner corresponding to a signal of a data channel between the terminal, where the first beamforming manner is by using the primary downlink transmission beam and/or the at least one secondary downlink beam Beamforming the signal of the data channel;

The base station carries the indication information of the first beamforming manner in a control signal, and sends the information to the terminal through a control channel, so that the terminal receives the base station according to the first beamforming manner. The signal transmitted by the data channel.

Optionally, the base station determines, from the multiple downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal, including:

Sending, by the base station, a training signal to the terminal according to the multiple downlink transmit beams, so that the terminal determines signal strength information of the multiple downlink transmit beams and sends the signal strength information to the base station; Determining, by the signal strength information of the multiple downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal from the multiple downlink transmit beams; or

Receiving, by the base station, the recommended downlink transmission beam information reported by the terminal, and determining, according to the recommended downlink transmission beam information, a primary downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal; or

Determining, by the base station, signal strength information of the multiple uplink receiving beams according to the received data signal and/or the control signal of the terminal; the base station determining, according to the determined signal strength information of the multiple uplink receiving beams, a primary downlink transmit beam and at least one secondary downlink transmit beam of the terminal; or

The base station selects at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and sends the CSI-RS to the terminal by using the downlink CSI-RS transmission beam. signal;

Receiving, by the base station, channel state information determined by the terminal for the CSI-RS signal, and determining, according to the channel state information, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal.

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

Receiving, by the base station, channel state information determined by the terminal for each CSI-RS signal, and corresponding to a downlink corresponding to a CSI-RS signal with the best channel quality in the channel state information according to the channel state information The CSI-RS transmission beam is used as the primary downlink beam, and one or more downlink CSI-RSs 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 sent. a beam as the at least one auxiliary downlink beam.

Optionally, the base station carries the first beamforming manner in a control signal, and after performing beamforming on the control signal by using the second beamforming manner, sending, by using the control channel, Terminals, including:

The base station configures a subset of N control resources for the terminal, where one control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam;

Sending, by the base station, configuration information of the N control resource subsets to the terminal, so that the terminal monitors the N control resource subsets;

Transmitting, by the base station, indication information of the first beamforming manner to the control signal, and transmitting, by using one or more control resource subsets in the N control resource subsets, to the terminal, to enable When the terminal detects that there is an effective control channel in the N control resource subsets, acquiring the first beamforming manner in the control signal, where the effective control channel refers to that the control signal of the control channel is sent to The terminal is sent to the terminal group where the terminal is located.

Optionally, the base station carries the indication information of the first beamforming manner in the control signal, and before sending the control channel to the terminal, the method further includes:

Determining, by the base station, a second beamforming manner corresponding to a control signal of a control channel between the terminal, where the second beamforming manner is by using the primary downlink transmission beam and/or the at least one auxiliary downlink Beams beamforming a control signal of the control channel;

The base station carries the indication information of the first beamforming mode in the control signal, and sends the information to the terminal through the control channel, including:

The base station carries the indication information of the first beamforming manner in a control signal, and after performing beamforming on the control signal by using the second beamforming manner, sending, by using the control channel, the terminal.

Optionally, the base station updates the first beamforming manner according to the channel state information corresponding to the primary downlink transmit beam and the channel state information corresponding to the at least one secondary downlink transmit beam that are sent by the terminal; or

When the base station continues to receive the hybrid automatic repeat request (HARQ) non-acknowledgement NACK feedback sent by the terminal or does not receive feedback from the terminal, according to the primary downlink transmission beam and the at least one secondary downlink transmission beam, Updating the first beamforming mode.

Optionally, the CSI-RS signal configuration information sent by the base station to the terminal, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS signal downlink transmission beam One of the primary downlink transmission beam and the at least one secondary downlink transmission beam;

The base station sends a CSI-RS signal by using the CSI-RS signal downlink transmission beam;

The base station receives channel state information that is measured by the terminal based on the CSI-RS signal.

Optionally, the base station sends CSI process configuration information to the terminal, where the CSI process configuration information includes association indication information of one or more CSI-RS signals;

The base station receives channel state information measured by the terminal according to one or more CSI-RS signals associated with a CSI process in the terminal.

Optionally, the first beamforming manner includes some or all of the following:

Beamforming the signal of the data channel by the primary downlink transmission beam, beamforming the signal of the data channel by the secondary downlink transmission beam, and spatially multiplexing the signal of the data channel by the primary downlink transmission beam and the auxiliary downlink beam Forming, diversity beamforming of signals of the data channel through the primary downlink transmit beam and the secondary downlink beam.

Optionally, the second beamforming manner includes some or all of the following:

Performing beamforming on the control signal of the control channel through the primary downlink transmission beam, and performing beam-pair control through the auxiliary downlink transmission The control signal of the channel is beamformed, and the control signal of the control channel is subjected to diversity beamforming through the primary downlink transmit beam and the secondary downlink beam.

In a second aspect, an embodiment of the present invention provides a method for transmitting a large-scale antenna beam, including:

The terminal receives the configuration information of the primary downlink transmission beam and the configuration information of the at least one secondary downlink transmission beam, and determines the primary downlink transmission beam and the at least one secondary downlink transmission beam;

Receiving, by the terminal, a control signal sent by the base station, where the control signal includes a first beamforming manner corresponding to a signal of a data channel between the base station and the terminal, where the first beamforming manner is Beamforming a signal of the data channel by using the primary downlink transmit beam and/or the at least one secondary downlink beam;

And receiving, by the terminal, a signal sent by the base station by using the data channel according to the first beamforming manner.

Optionally, the terminal receives the control signal sent by the base station, including:

Receiving, by the terminal, the control signal that is formed by the second beamforming mode beam sent by the base station by using a control channel with the terminal, where the second beamforming mode is sent by using the primary downlink A beam and/or the at least one secondary downlink beam beamforms a control signal of the control channel.

Optionally, the terminal receives the CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, and the CSI-RS signal downlink transmission beam One of the primary downlink transmission beam and the at least one secondary downlink transmission beam;

The terminal determines a CSI-RS downlink receiving beam corresponding to the downlink transmission beam of the CSI-RS signal, and receives a CSI-RS signal sent by the base station according to the CSI-RS downlink receiving beam;

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 then sends the channel state information 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;

Determining, by the terminal, 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 channel state information according to the channel estimation value, and then sends the channel state information to the base station, including:

Obtaining, by the terminal, a channel estimation value of one or more CSI-RS signals associated with each process according to the received CSI-RS signal;

The terminal determines channel state information according to channel estimation values of one or more CSI-RS signals associated with each process and feeds back to the base station.

Optionally, the terminal determines channel state information and feeds back to the base station according to channel estimation values of one or more CSI-RS signals associated with each process, including:

The terminal determines channel state information corresponding to each CSI-RS signal according to channel estimation values of each CSI-RS signal associated with each process, and feeds back channel state information corresponding to each CSI-RS signal to the base station. ;or

Determining, by the terminal, the integrated channel state information according to the channel estimation value of the CSI-RS signal associated with each CSI-RS process, and feeding the integrated channel state information to the base station; or

The terminal selects one or more CSI-RS signals according to channel estimation values of each CSI-RS signal associated with each process, and respectively determines and feeds back channel state information corresponding to each selected CSI-RS signal, And identifying the selected identification information of each CSI-RS signal to the base station.

Optionally, the terminal receives, according to the first beamforming manner, a signal that the base station sends the data channel. Number, including:

If the first beamforming mode is that the data channel uses the primary downlink transmit beam transmission, the terminal receives the downlink receive beam corresponding to the primary downlink transmit beam; or

If the first beamforming mode is that the data channel uses the auxiliary downlink transmission beam transmission, the terminal uses the downlink receiving beam corresponding to the auxiliary downlink transmission beam to receive; or

If the first beamforming mode is that the data channel uses the primary downlink transmission beam and the secondary downlink beam for space division multiplexing transmission, the terminal receives the downlink downlink beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam respectively. ;or

If the first beamforming mode is that the data channel uses the primary downlink transmission beam and the secondary downlink beam for diversity transmission, the terminal receives the downlink downlink beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam respectively.

In a third aspect, an embodiment of the present invention provides a method for transmitting a large-scale antenna beam, including:

The base station configures a subset of N control resources for the terminal, where the subset of control resources includes a plurality of resource units for control channel transmission;

The base station sends the configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset;

The base station sends a control signal to the terminal in at least one control resource subset of the N control resource subsets.

Optionally, the sending, by the base station, the control signal to the terminal in the one or more control resource subsets in the N control resource subsets, including:

The base station sends the control signal to the terminal in a downlink transmission beam corresponding to at least one control resource subset in the N control resource subsets.

In a fourth aspect, an embodiment of the present invention provides a method for transmitting a large-scale antenna beam, including:

The terminal receives the configuration information of the N control resource subsets sent by the base station, where the one control resource subset includes multiple resource units for control channel transmission, and the configuration information includes downlink transmission corresponding to each control resource subset. Indicator information of the beam;

The terminal receives a control signal sent by the base station through at least one control resource subset in the N control resource subsets.

Optionally, the receiving, by the terminal, the control signal sent by the base station by using at least one control resource subset in the N control resource subsets, including:

Determining, by the terminal, the downlink receiving beam that receives the subset of the control resources according to the indication information of the downlink transmission beam corresponding to the at least one control resource subset;

The terminal receives a control signal in the subset of control resources by using the downlink receive beam.

In a fifth aspect, an embodiment of the present invention provides a base station, including:

a processing unit, configured to determine, from a plurality of downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal; and determine a first beamforming manner corresponding to a signal of the data channel between the terminals, where The first beamforming manner is to beamform the signal of the data channel by using the primary downlink transmission beam and/or the at least one secondary downlink beam;

a transceiver unit, configured to send configuration information of the primary downlink transmit beam and configuration information of the at least one secondary downlink transmit beam to the terminal; and carry the indication information of the first beamforming manner into a control signal Transmitting to the terminal through a control channel, so that the terminal is connected according to the first beamforming manner in the control signal Receiving a signal transmitted by the base station through the data channel.

Optionally, the processing unit is configured to: when the primary downlink transmit beam and the at least one secondary downlink transmit beam are determined by using the downlink transmit beam and the at least one secondary downlink transmit beam, The unit sends a training signal to the terminal, so that the terminal determines signal strength information of the multiple downlink transmit beams and sends the signal strength information to the base station; according to the signals of the multiple downlink transmit beams received by the transceiver unit Strength information, determining a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal from the plurality of downlink transmit beams; or

Receiving, by the transceiver unit, recommended downlink transmission beam information reported by the terminal; determining, according to the recommended downlink transmission beam information, a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal; or

Determining, according to the data signal and/or the control signal of the terminal, the signal strength information of the multiple uplink receiving beams, and determining, according to the determined signal strength information of the multiple uplink receiving beams, the terminal information a primary downlink transmit beam and at least one secondary downlink transmit beam; or

Selecting at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and transmitting, by the transceiver unit, the CSI to the terminal by using the downlink CSI-RS transmission beam Receiving, by the transceiver unit, channel state information determined by the terminal for the CSI-RS signal, and determining, according to the channel state information, a primary downlink transmit beam and at least one auxiliary for the terminal Downstream transmit beam.

Optionally, the processing unit receives the channel state information determined by the terminal for the CSI-RS signal by using the transceiver unit, and determines a primary downlink transmit beam for the terminal according to the channel state information. And at least one auxiliary downlink transmit beam, specifically for:

Receiving, by the transceiver unit, channel state information determined by the terminal for each CSI-RS signal, and correspondingly, according to the channel state information, a CSI-RS signal with the best channel quality in the channel state information The downlink CSI-RS transmission beam is used as the primary downlink beam, and one or more downlink CSIs 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. The RS transmits a beam as the at least one secondary downlink beam.

Optionally, the transceiver unit carries the indication information of the first beamforming manner in a control signal, and when the control channel is sent to the terminal, specifically used to:

Configuring N control resource subsets for the terminal, where one control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam;

And transmitting configuration information of the N control resource subsets to the terminal, so that the terminal monitors the N control resource subsets;

And transmitting the indication information of the first beamforming manner to the control signal, and transmitting, by using one or more control resource subsets in the N control resource subsets, to the terminal, so that the terminal is in Obtaining, when the effective control channel exists in the N control resource subsets, obtaining the first beamforming manner in the control signal, where the effective control channel is that the control signal of the control channel is sent to the terminal Or sent to the terminal group where the terminal is located.

Optionally, the processing unit is further configured to:

And transmitting, by the transceiver unit, the indication information of the first beamforming manner to a control signal, and before transmitting to the terminal by using a control channel, determining a corresponding to a control signal of a control channel between the terminal a second beamforming manner, wherein the second beamforming mode is to pass the primary downlink transmission beam and/or the at least one secondary downlink wave Beams beamforming a control signal of the control channel;

The transceiver unit carries the indication information of the first beamforming mode in the control signal, and when the control channel is sent to the terminal, specifically used to:

The indication information of the first beamforming manner is carried in the control signal, and the control signal is beamformed by the second beamforming manner, and then sent to the terminal through the control channel.

Optionally, the processing unit is further configured to:

Updating the first beamforming mode according to the channel state information corresponding to the primary downlink transmission beam and the channel state information corresponding to the at least one secondary downlink transmission beam that are received by the terminal; or

And transmitting, by the transceiver unit, the hybrid automatic retransmission request, the HARQ non-acknowledgment NACK feedback sent by the terminal, or receiving the feedback of the terminal, according to the primary downlink transmission beam and the at least one secondary downlink transmission. A beam that updates the first beamforming mode.

The CSI-RS signal configuration information, where a downlink transmission beam of the RS signal is one of the primary downlink transmission beam and the at least one secondary downlink transmission beam; transmitting a CSI-RS signal by using the CSI-RS signal downlink transmission beam; and receiving the terminal based on the CSI - Channel signal information obtained by measuring the 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; and receiving the terminal according to The measured channel state information is obtained by one or more CSI-RS signals associated with the CSI process in the terminal.

Optionally, the first beamforming manner includes some or all of the following:

The control signal of the control channel is beamformed by the primary downlink transmission beam, the control signal of the control channel is beamformed by the secondary downlink transmission beam, and the control signal of the control channel is diversityd by the primary downlink transmission beam and the secondary downlink beam. Beamforming.

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 the base station, and receive a control signal sent by the base station, where the control signal includes the base station and the terminal a first beamforming manner corresponding to the signal of the data channel, wherein the first beamforming manner is to beamform the signal of the data channel by using the primary downlink transmission beam and/or the at least one secondary downlink beam ;

a processing unit, configured to determine, according to the configuration information of the primary downlink transmit beam and the configuration information of the at least one secondary downlink transmit beam that are sent by the base transceiver, the primary downlink transmit beam and the at least one secondary downlink transmit beam; Receiving, by the transceiver unit, a signal sent by the base station through the data channel according to the first beamforming manner.

Optionally, when the transceiver unit receives the control signal sent by the base station, specifically:

Receiving, by the base station, the control signal that is beamformed by the second beamforming mode, which is sent by using a control channel between the base station, and the second beamforming manner is to pass the primary downlink transmission beam and/or the Said at least one auxiliary down The beam beamforms the control signal of the control channel.

Optionally, the transceiver unit is further configured to: receive CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, where the CSI - the RS signal downlink transmission beam is one of the primary downlink transmission beam and the at least one secondary downlink transmission beam;

The processing unit is further configured to: determine a CSI-RS downlink receive beam corresponding to the downlink transmit beam of the CSI-RS signal, and receive, by using the CSI-RS downlink receive beam, the base station to send, according to the CSI-RS downlink receive beam The CSI-RS signal is obtained according to the CSI-RS signal received by the transceiver unit, and the channel state information is obtained according to the channel estimation value, and then sent to the base station by using 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;

Determining, according to the association indication information, one or more CSI-RS signals associated with each process;

The processing unit obtains a channel estimation value according to the CSI-RS signal received by the transceiver unit, and obtains channel state information according to the channel estimation value, and then sends the channel state information to the base station by using the transceiver unit, where the processing unit is specifically configured to: The CSI-RS signal received by the transceiver unit obtains channel estimation values of one or more CSI-RS signals associated with each process; and channel estimation values of one or more CSI-RS signals associated with each process, Channel state information is determined and fed back to the base station by the transceiver unit.

Optionally, the processing unit determines the channel state information according to the channel estimation value of the one or more CSI-RS signals associated with each process, and when the channel state information is fed back to the base station by using the transceiver unit, specifically:

Determining, according to channel estimation values of each CSI-RS signal associated with each process, channel state information corresponding to each CSI-RS signal, and feeding back channel state information corresponding to each CSI-RS signal to the base station; or

Determining integrated channel state information according to channel estimation values of CSI-RS signals associated with each CSI-RS process, and feeding the integrated channel state information to the base station; or

Selecting one or more CSI-RS signals according to channel estimation values of each CSI-RS signal associated with each process, respectively determining and feeding back channel state information corresponding to each selected CSI-RS signal, and selecting The identification information of each CSI-RS signal is fed back to the base station.

Optionally, when the processing unit receives the signal that the base station sends the data channel by using the transceiver unit according to the first beamforming manner, the processing unit is specifically configured to:

If the first beamforming mode is that the data channel uses the primary downlink transmission beam transmission, the downlink receiving beam corresponding to the primary downlink transmission beam is received by the transceiver unit; or

If the first beamforming mode is that the data channel uses the auxiliary downlink transmission beam transmission, 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 primary downlink transmitting beam and the secondary downlink beam to perform space division multiplexing transmission, the downlink receiving beam corresponding to the primary downlink transmitting beam and the secondary downlink transmitting beam respectively passes through the transceiver unit. Receiving; or

If the first beamforming mode is that the data channel uses the primary downlink transmission beam and the secondary downlink beam for diversity transmission, the downlink receiving beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam respectively is received by the transceiver unit.

In a seventh aspect, an embodiment of the present invention provides a base station, including:

a processing unit, configured to configure, by the terminal, a subset of N control resources, where the subset of control resources includes multiple resource units for control channel transmission;

a transceiver unit, configured to send configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; and the N controls Within the subset of at least one control resource in the subset of resources, a control signal is sent to the terminal.

Optionally, the transceiver unit, when transmitting a control signal to the terminal in the at least one control resource subset of the N control resource subsets, is specifically configured to: in the N control resource subsets And transmitting, by the at least one downlink transmit beam corresponding to the subset of control resources, the control signal to the terminal.

In an eighth aspect, an embodiment of the present invention provides a terminal, including:

The transceiver unit is configured to receive configuration information of the N control resource subsets sent by the base station, where the control resource subset includes multiple resource units for control channel transmission, where the configuration information includes each control resource subset Corresponding downlink transmit beam indication information; receiving, by the base station, a control signal sent in at least one control resource subset in the N control resource subsets.

Optionally, the terminal further includes a processing unit, where the processing unit is configured to: determine, according to the indication information of the downlink transmit beam corresponding to the at least one control resource subset, the downlink receive beam that receives the subset of the control resources;

When the receiving and receiving unit receives the control signal sent by the base station in the at least one control resource subset of the N control resource subsets, the transceiver unit is specifically configured to: use the processing unit to determine the downlink receiving beam in the Control signals are received within a subset of control resources.

A ninth aspect, an embodiment of the present invention provides a base station, where the base station includes a memory, a processor, and a transceiver;

The memory is for storing a computer readable program;

The processor performs the method performed by the base station in a large-scale antenna beam transmission method provided by the first aspect by running a program in the memory;

The transceiver is used to receive and transmit data under the control of the processor.

According to a tenth aspect, a terminal of the embodiment of the present invention includes a memory, a processor, and a transceiver;

The memory is for storing a computer readable program;

The processor completes a method performed by the terminal in a large-scale antenna beam transmission method provided by the second aspect by running a program in the memory;

In an eleventh aspect, a base station includes a memory, a processor, and a transceiver, where

The memory is for storing a computer readable program;

The processor completes a method performed by the base station in a large-scale antenna beam transmission method provided by the third aspect by running a program in the memory;

According to a twelfth aspect, a terminal of the embodiment of the present invention is characterized in that: the terminal comprises a memory, a processor and a transceiver; wherein

The memory is for storing a computer readable program;

The processor completes a method performed by the terminal in a large-scale antenna beam transmission method provided by the fourth aspect by running a program in the memory;

In the embodiment of the present invention, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from the plurality of downlink transmission beams; the base station determines a first beamforming manner corresponding to the signal of the data channel between the terminal, and The first beamforming mode is carried in the control signal and sent to the terminal through the control channel, so that the terminal according to the control signal The first beamforming mode receives a signal transmitted by the base station through the data channel, where the first beamforming manner is to beamform the signal of the data channel by using a primary downlink transmission beam and/or at least one auxiliary downlink 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 to beamform the signal, thereby improving the efficiency of data transmission and enhancing the reliability of data transmission.

DRAWINGS

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

1 is a schematic structural diagram of a system to which an embodiment of the present invention is applied;

2 is a flowchart of a method for transmitting a large-scale antenna beam according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for transmitting a large-scale antenna beam according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a subset of control resources according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a base station according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a terminal according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a base station according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a terminal according to an embodiment of the present invention.

detailed description

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

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

FIG. 1 is a schematic diagram showing a system architecture applicable to an embodiment of the present invention. As shown in FIG. 1 , a system architecture applicable to an embodiment of the present invention includes a base station 101, and a terminal 102, a terminal 103, and a terminal 104, which are connected through a wireless connection. .

The terminal 102, the terminal 103, and the terminal 104 can communicate with one or more core networks via a RAN (Radio Access Network), and the terminal can refer to a UE (User Equipment) and access. Terminal, subscriber unit, subscriber 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 may be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), and a wireless communication. Functional hand Holding devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, and the like.

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

Beamforming is a signal preprocessing technique based on an antenna array. Beamforming produces a directional beam by adjusting the weighting coefficients of each element in the antenna array, so that a significant array gain can be obtained. Therefore, beamforming technology has great advantages in terms of expanding coverage, improving edge throughput, and suppressing interference.

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

As shown in FIG. 2, a method for transmitting a large-scale antenna beam according to an embodiment of the present invention includes:

Step 201: The base station determines, from the plurality of downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal.

Step 202: The base station sends configuration information of the primary downlink transmission beam and configuration information of the at least one secondary downlink transmission beam to the terminal.

Step 203: The terminal receives the configuration information of the primary downlink transmission beam and the configuration information of the at least one secondary downlink transmission beam, and determines the primary downlink transmission beam and the at least one secondary downlink transmission beam.

Step 204: The base station determines a first beamforming manner corresponding to the signal of the data channel between the terminal, where the first beamforming manner is to pass the primary downlink transmission beam and/or the at least one secondary downlink beam pair. The signal of the data channel is beamformed.

Step 205: The base station carries the indication information of the first beamforming manner in the control signal, and sends the indication information to the terminal through the control channel.

Step 206: The terminal receives the control signal sent by the base station, and determines, according to the first beamforming manner in the control signal, that the received signal is received by the first beamforming manner.

Step 207: The base station sends the signal to the terminal through the data channel by using a first beamforming manner.

Step 208: The terminal receives the signal by using a first beamforming manner.

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

Manner 1: The base station sends a training signal to the terminal to determine a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal.

Training process:

1) The base station sends a downlink beam training signal to the terminal. Base station

Candidate downlink transmit beams, each downlink beam corresponding to a set of beamforming weights, and the transmit beam shaping weight of the nth beam

Where K is the number of beam-formed antenna elements, which can be smaller than the number of antenna elements of the base station. The base station can transmit one downlink beam training signal for each candidate downlink transmit beam. For example

Downlink transmit beams, the base station can send

Downlink beam training signals. This

The downlink signal training signals may be TDM (Time Division Multiplexing), FDM (Frequency Division Multiplexing), CDM (Code Division Multiplexing), or various multiplexing methods. combination. For example, in a system based on OFDM (Orthogonal Frequency Division Multiplexing),

Training signals can be occupied

OFDM symbols, each training signal occupies 1 OFDM symbol.

The training signal of each downlink transmit beam is sent after the beamforming weight corresponding to the beam is shaped. In the subsequent description process, "transmitting with one beam", "transmitting on one beam", "using one beam transmission", "passing through one beamforming transmission", etc. all refer to shaping a beam corresponding to a beam by a beam. The weight is shaped and sent out from the physical antenna. Assuming that the signal to be transmitted on a resource unit is s, the signal after shaping with the nth beam is:

y=[y ₁ y ₂ ... y _K ] ^T =W _n s,

Where y _k will be mapped to the antenna oscillator 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 about the downlink transmit beam to the base station. Relevant information includes the identity of the downlink transmit beam, such as the number of the downlink transmit beam. The information of the downlink transmit beam fed back by the terminal may be different according to the multiplexing mode of the downlink beam/beam training signal. 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 beam training signal is 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 a received signal power level.

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

For example, the base station uses one downlink transmit beam with the strongest signal strength as the primary downlink transmit beam, and selects M from the downlink transmit beams other than the primary downlink transmit beam as the secondary downlink transmit beam, 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.

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

In step 2) of the mode-one training process, the terminal may further select a recommended downlink transmit beam according to the signal strength information of each downlink beam training signal. For example, the terminal may select the downlink transmit beam with the strongest received power of the training signal as the recommended downlink transmit beam.

Then, the terminal sends the recommended downlink transmission beam to the base station, and sends the signal strength information corresponding to the recommended downlink transmission beam to the base station, where the base station determines one primary downlink transmission beam and at least one auxiliary downlink transmission from the recommended downlink transmission beam. Beam.

And after that, the terminal determines a corresponding downlink receiving beam for each recommended downlink transmitting beam (of course, it may also be a corresponding downlink receiving beam for each downlink transmitting beam, and is not limited to the recommended downlink. Transmit beam).

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

Manner 3: The base station determines, according to the reciprocity of the uplink and downlink signals, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal.

Determining, by the base station, the signal strength information of the multiple uplink receiving beams according to the received data signal and/or the control signal of the terminal, and determining the primary downlink sending for the terminal according to the determined signal strength information of the multiple uplink receiving beams. A beam and at least one secondary downlink transmit beam.

In a system in which the uplink and downlink channel reciprocity is established, the base station has a correspondence between the uplink receiving beam and the downlink transmitting beam of the same terminal (specifically, the weight of the uplink receiving beam and the weight of the downlink transmitting beam). And the correspondence is known to the base station. The base station receives the data signal and/or the control signal sent by the terminal, determines the uplink receiving beam, and then determines the corresponding downlink transmitting beam (determining the weight of the downlink transmitting beam) based on the channel reciprocity and the correspondence between the uplink and downlink beams.

Specifically, the base station may select the downlink transmission beam corresponding to the uplink receiving beam with the highest uplink signal strength as the primary downlink transmission beam, and select the downlink transmission beam corresponding to the one or more uplink receiving beams with the highest strength from the remaining uplink receiving beams. A secondary downlink transmit beam.

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

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

1. CSI-RS signal transmission process

1) The base station determines at least two downlink CSI-RS transmission beams. The method of determination can be:

a) The base station performs selection based on the downlink transmission beam related information according to the downlink transmission beam related information reported by the terminal received in the foregoing training process. For example, if the information about the downlink transmit beam includes the strength information of the transmit beam, the base station may select the plurality of beams with the highest strength as the downlink CSI-RS transmit beam.

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

2) The base station transmits a CSI-RS signal. The base station transmits a CSI-RS signal on each downlink CSI-RS transmit beam. Each CSI-RS signal includes at least one antenna port. Transmitting a CSI-RS on a downlink beam means that the signal of each antenna port of the CSI-RS signal is sent out from the antenna after being shaped by the downlink beam.

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

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

b) The base station notifies the terminal of the information about the downlink CSI-RS transmission beam through an independent signaling procedure (independent of 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 is used for each CSI-RS to transmit. For example, if the downlink CSI-RS transmission beam includes two beams, the configuration information of the CSI-RS may include one bit indicating that the beam is a downlink CSI-RS transmission beam 0 or a downlink CSI-RS transmission beam 1 transmission.

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

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

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

The calculation of the channel state information has the following possible ways:

a) Each CSI-RS is independently calculated, and the terminal independently calculates channel state information according to the channel value estimated by each CSI-RS.

b) Calculating channel estimation values of multiple CSI-RSs. For example, assume that the base-to-terminal data transmission is multi-stream space division multiplexing, and each data stream is sent from one downlink CSI-RS transmission beam. Because there is interference between multiple data streams, the terminal is calculating each data stream. When information such as CQI, PMI, or RI needs to calculate interference generated by other data streams, it is necessary to integrate channel estimation results of multiple CSI-RSs for calculation.

For example, if the data transmission from the base station to the terminal is multi-stream diversity transmission, one data stream is sent from multiple downlink CSI-RS transmission beams, and the terminal needs to calculate multiple information when calculating CQI, PMI, RI, etc. of the data stream. The CSI-RS transmits the combined result of the beam transmission, and therefore it is necessary to integrate the channel estimation results of the plurality of CSI-RSs for calculation.

2. CSI-RS feedback process

In the first method, the CSI feedback process can be performed in multiple CSI processes (one CSI-RS is sent to each CSI process).

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

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

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

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

a) The terminal determines the channel state information corresponding to each CSI-RS signal according to the channel estimation value of the CSI-RS signal associated with each process, and 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 a certain criterion according to a channel estimation value of each CSI-RS signal associated with each process, and respectively determines and feeds back each CSI-RS signal corresponding to the selection. The channel state information is fed back to the base station for the selected identification information of each CSI-RS signal. The criteria chosen may be that the received signal is strongest, or the transmission capability is the strongest, or the channel capacity is the largest, or the channel quality is optimal.

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 the integrated channel state information is fed back to the base station.

Method 2: The feedback process of the CSI can also be performed by using 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 association manner may be that the identifier of the multiple CSI-RSs is included in the configuration message of the CSI process, and the identifier points to one or more CSI-RSs described in the CSI-RS transmission process.

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

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

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

a) The terminal determines 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 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 channel estimation values of all CSI-RS signals associated with the CSI process, and respectively determines and feeds back selected channels corresponding to each CSI-RS signal. Status information, and the selected identification information of each CSI-RS signal is fed back to the base station. The criteria chosen may be that the received signal is strongest, or the transmission capability is the strongest, or the channel capacity is the largest, or the channel quality is optimal.

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 the integrated channel state information is fed back to the base station.

The base station receives the channel state information determined by the terminal for each CSI-RS signal, and uses the downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality in the channel state information as the primary downlink beam according to the channel state information. 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, as the auxiliary downlink beam.

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

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

In the foregoing step 204, the base station determines a first beamforming manner corresponding to the signal of the data channel between the terminal, where the first beamforming manner is to pass the primary downlink transmission beam and/or the at least one auxiliary downlink. A beam beamforms the signal of the data channel.

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

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

1) beamforming the signal of the data channel by using a primary downlink transmission beam;

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

3) performing spatial division multiplexing beamforming on the signal of the data channel by using the primary downlink transmission beam and the auxiliary downlink beam;

Space division multiplexing refers to the fact that multiple data are beamformed and transmitted on different downlink transmit beams.

4) performing diversity beamforming on the signal of the data channel by using the primary downlink transmit beam and the secondary downlink beam.

Diversity refers to a data stream that is beamformed on multiple downstream transmit beams.

The first beamforming mode may be specified in an initial state, for example, specifying beamforming of a signal of a data channel through a primary downlink transmit beam, or specifying beamforming of a signal of a data channel by one or more secondary downlink transmit beams. Or specifying spatially multiplexed beamforming of the data channel by the primary downlink transmit beam and the secondary downlink beam, or specifying diversity beamforming of the data channel by the primary downlink transmit beam and the secondary downlink beam, etc. .

In the process of sending the subsequent signals, the first beamforming mode may be updated. Specifically, the base station according to the channel state information corresponding to the primary downlink transmitting beam and the channel state information corresponding to the at least one secondary downlink transmitting beam. Updating the first beamforming mode; or the base station continuously receiving the HARQ sent by the terminal (Nybrid Automatic Repeat reQuest), when the NACK (Negative Acknowledgement) feedback or the feedback of the terminal is not received, the update is performed according to the primary downlink transmission beam and the at least one secondary downlink transmission beam. The first beam shaping mode.

Or you can use the following methods to update the first beamforming method:

The terminal receives CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, where the CSI-RS signal downlink transmission beam is the primary downlink transmission beam and One of the at least one auxiliary downlink transmission beam;

The terminal determines a CSI-RS downlink receiving beam corresponding to a downlink transmission beam of the CSI-RS signal, and receives a CSI-RS signal sent by the base station according to the CSI-RS downlink receiving beam;

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 then sends the channel state information 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 based on channel state information fed back by the terminal. For example, the base station receives the channel quality information (CQI) of the CSI process (CSI-RS) of the primary downlink transmission beam and the CSI process (CSI-RS) of the secondary downlink transmission beam, and selects a beam with a higher CQI for data transmission. .

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

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

In the foregoing step 205, the base station carries the indication information of the first beamforming manner in the control signal, and sends the indication information to the terminal through the control channel.

Specifically, the first beamforming manner can be sent to the terminal in at least two ways:

method one

Step A: The base station configures, for the terminal, a subset of the N control resources, where the control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam.

Step B: The base station sends configuration information of the N control resource subsets to the terminal.

Step C: The terminal monitors the N subsets of control resources.

Step D: The base station carries the indication information of the first beamforming manner in the control signal, and sends the information to the terminal by using one or more control resource subsets in the N control resource subsets.

Step E: The terminal acquires the first beamforming manner in the control signal when detecting that the effective control channel exists in the N control resource subsets, where the effective control channel refers to that the control signal of the control channel is sent to The terminal is sent to the terminal group where the terminal is located.

Way two

Step A: The base station determines a second beamforming manner corresponding to a control signal of a control channel between the terminal, where the second beamforming manner is performed by using a primary downlink transmission beam and/or at least one secondary downlink beam pair control channel. Control signal for beamforming;

Specifically, the second beamforming manner includes some or all of the following:

3) Performing diversity beamforming on the data channel signal through the primary downlink transmit beam and the secondary downlink beam.

Step B: The base station carries the indication information of the first beamforming manner in the control signal, performs beamforming on the control signal by using the second beamforming manner, and sends the control signal to the terminal through the control channel.

That is, the base station performs beamforming on the control signal by using the second beamforming method, and then sends the signal to the terminal through the control channel, where the control signal includes a beamforming manner in which the terminal receives data transmitted by the base station through the data channel, specifically, The first beam shaping mode is included in the control signal.

The base station transmits, to the terminal, a control signal including indication information of a beamforming manner of the data channel transmission through the control channel. For example, the indication information about the beamforming manner of the data channel transmission included in the control channel is represented by 2 bits, and can be expressed in the manner described in Table 1.

Table 1

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

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

In the above step 208, the terminal receives the signal by the first beamforming method.

The terminal receives the signal sent by the base station. The first beamforming method is used for receiving.

Possible ways include:

a), if the base station performs beamforming on the signal of the data channel by using the primary downlink transmission beam, the terminal receives the downlink receiving beam corresponding to the primary downlink transmission beam;

b), if the base station performs beamforming on the signal of the data channel by using the auxiliary downlink transmission beam, the terminal receives the downlink receiving beam corresponding to the auxiliary downlink transmission beam;

c), if the base station performs space division multiplexing beamforming on the signal of the data channel by using the primary downlink transmission beam and the auxiliary downlink beam, the terminal receives the downlink downlink beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam;

d) If the base station performs diversity beamforming on the signal of the data channel by using the primary downlink transmit beam and the secondary downlink beam, the terminal receives the downlink downlink transmit beam corresponding to the primary downlink transmit beam and the secondary downlink transmit beam.

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

In the embodiment of the present invention, by using the foregoing steps 201 to 208, the control signal and the data signal are transmitted by using the main downlink transmission beam and/or the auxiliary downlink transmission beam, thereby improving the stability of the information transmission and improving the stability. The efficiency of data transmission.

In the embodiment of the present invention, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from the plurality of downlink transmission beams; the base station determines a first beamforming manner corresponding to the signal of the data channel between the terminal, and The first beamforming manner is carried in the control signal, and 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 manner in the control signal, where the first beamforming manner Generating a signal of the data channel by a primary downlink transmit beam and/or at least one secondary downlink beam Forming, 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 to beamform the signal, thereby improving the efficiency of data transmission and enhancing 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, including:

Step 301: The base station configures, to the terminal, N control resource subsets, where the one control resource subset includes multiple resource units used for control channel transmission.

Step 302: The base station sends configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset.

Step 303: The terminal receives 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 the at least one control resource subset in the N control resource subsets.

Step 305: The terminal receives, by the base station, a control signal sent by using at least one control resource subset in the N control resource subsets.

In the above step 305, the specific manner can be implemented in the following manner:

And determining, by the terminal, the downlink receiving beam that receives the subset of the control resources according to the downlink sending beam indication information of the at least one control resource subset; and the terminal receiving, by using the downlink receiving beam, the control signal of the control resource subset.

The base station configures N control resource subsets for the terminal, and 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 subset of control resources can be CDM, TDM, or FDM multiplexed. Preferably, the subset of control resources is TDM multiplexed.

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

In the embodiment of the present invention, the base station may send a control control signal to the terminal by controlling the subset of resources, and may be sent on a subset of the control resources, or may be sent on multiple subsets of the control resources, thereby implementing Flexible transmission 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, including:

The processing unit 501 is configured to determine a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal from the plurality of downlink transmit beams, and determine a first beamforming manner corresponding to the signal of the data channel between the terminals, where The first beamforming manner is to perform beamforming on the data channel by using the primary downlink transmit beam and/or the at least one secondary downlink beam;

The transceiver unit 502 is configured to send configuration information of the primary downlink transmit beam and configuration information of the at least one secondary downlink transmit beam to the terminal, and carry the indication information of the first beamforming manner to a control signal. And transmitting, by the control channel, to the terminal, so that the terminal receives a signal sent by the base station by using the data channel according to the first beamforming manner in the control signal.

Optionally, the transceiver unit 502 is configured to: send a training signal to the terminal according to the multiple downlink transmit beams, so that the terminal determines signal strength information of the multiple downlink transmit beams and sends the information to the terminal The base station;

When the processing unit 501 determines the primary downlink transmission beam and the at least one secondary downlink transmission beam for the terminal from the plurality of downlink transmission beams, the processing unit 501 is specifically configured to: pass the transceiver component 502 according to the multiple downlink transmission beams. The terminal sends a training signal, so that the terminal determines signal strength information of the multiple downlink transmit beams and sends the signal strength information to the base station; according to the signal strength of the multiple downlink transmit beams received by the transceiver unit 502 Determining, from the plurality of downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal; or

Receiving, by the transceiver unit 502, recommended downlink transmission beam information reported by the terminal; determining, according to the recommended downlink transmission beam information, a primary downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal; or

Determining signal strength information of the plurality of uplink receiving beams according to the data signal and/or the control signal of the terminal received by the transceiver unit 502; determining, according to the determined signal strength information of the multiple uplink receiving beams, the terminal Primary downlink transmit beam and at least one secondary downlink transmit beam; or

Selecting at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and transmitting, by the transceiver unit 502, the downlink CSI-RS transmission beam to the terminal a CSI-RS signal; receiving, by the transceiver unit 502, channel state information determined by the terminal for the CSI-RS signal, and determining, according to the channel state information, a primary downlink transmit beam for the terminal and at least A secondary downlink transmit beam.

Optionally, the processing unit 501 receives, by using the transceiver unit 502, channel state information that is determined by the terminal for the CSI-RS signal, and determines, according to the channel state information, a primary downlink for the terminal. When the transmit beam and the at least one secondary downlink transmit beam are used, specifically:

Receiving, by the transceiver unit 502, channel state information determined by the terminal for each CSI-RS signal, and selecting a CSI-RS signal with the best channel quality in the channel state information according to the channel state information. Corresponding downlink CSI-RS transmission beam as the primary downlink beam, and one or more downlink CSIs other than the downlink CSI-RS transmission beam corresponding to the CSI-RS signal with the best channel quality in the channel state information - RS transmit beam as the at least one secondary downlink beam.

Optionally, the transceiver unit 502 carries the indication information of the first beamforming manner in a control signal, and when the control channel is sent to the terminal, specifically used to:

Optionally, the processing unit 501 is further configured to:

And transmitting, by the transceiver unit 502, the indication information of the first beamforming manner to a control signal, and before transmitting to the terminal by using a control channel, determining, corresponding to a control signal of a control channel between the terminal a second beamforming manner, wherein the second beamforming manner is to perform beamforming on a control signal of the control channel by using the primary downlink transmission beam and/or the at least one secondary downlink beam;

The transceiver unit 502 carries the indication information of the first beamforming manner in a control signal, using the When the control channel is sent to the terminal, it is specifically used to:

Optionally, the processing unit 501 is further configured to:

Updating the first beamforming mode according to the channel state information corresponding to the primary downlink transmission beam and the channel state information corresponding to the at least one secondary downlink transmission beam that are received by the terminal received by the transceiver unit 502 ;or

And the receiving, by the transceiver unit 502, the HARQ non-answer NACK feedback sent by the terminal or receiving the feedback of the terminal, according to the primary downlink transmission beam and the at least one auxiliary downlink. Transmitting a beam and updating the first beamforming mode.

Optionally, the transceiver unit 502 is further configured to: send CSI-RS signal configuration information to the terminal, where the CSI-RS signal configuration information includes configuration information of a downlink transmission beam of a CSI-RS signal, where 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 CSI-RS signal downlink transmission beam is used to transmit a CSI-RS signal; and the receiving the terminal is based on the The channel state information obtained by the CSI-RS signal is measured.

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; and receiving the terminal according to The channel state information obtained by the measurement is performed by one or more CSI-RS signals associated with the CSI process in the terminal.

Optionally, the first beamforming manner includes some or all of the following:

In the embodiment of the present invention, the base station determines a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal from the plurality of downlink transmission beams; the base station determines a first beamforming manner corresponding to the signal of the data channel between the terminal, and The first beamforming manner is carried in the control signal, and 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 manner in the control signal, where the first beamforming manner The beamforming of the signal of the data channel is performed by using the primary downlink transmission beam and/or the at least one secondary downlink beam. Therefore, when the base station sends the control signal and the data signal to the terminal, the beamforming mode can be flexibly selected. Beamforming improves the efficiency of data transmission and enhances the reliability of data transmission.

Based on the same inventive concept, an embodiment of the present invention further provides a terminal, as shown in FIG. 6, including:

The transceiver unit 602 is configured to receive configuration information of a primary downlink transmit beam and configuration information of at least one secondary downlink transmit beam sent by the base station, and receive a control signal sent by the base station, where the control signal includes the base station and the terminal The first beamforming manner corresponding to the signal of the data channel, the first beamforming manner is to perform beam assignment on the signal of the data channel by using the primary downlink transmission beam and/or the at least one secondary downlink beam shape;

The processing unit 601 is configured to: according to the primary downlink transmit beam that is sent by the base station and received by the transceiver unit 602 Determining, by the configuration information, configuration information of the at least one secondary downlink transmit beam, the primary downlink transmit beam and the at least one secondary downlink transmit beam; receiving, by the transceiver unit 602, the base station according to the first beamforming manner The signal transmitted by the data channel.

Optionally, when the transceiver unit 602 receives the control signal sent by the base station, specifically, the transceiver unit 602 is configured to:

Receiving, by the base station, the control signal that is beamformed by the second beamforming mode, which is sent by using a control channel between the base station, and the second beamforming manner is to pass the primary downlink transmission beam and/or the The at least one auxiliary downlink beam performs beamforming on a 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 a downlink transmission beam of a CSI-RS signal, where The downlink transmission beam of the CSI-RS signal is one of the primary downlink transmission beam and the at least one secondary downlink transmission beam;

The processing unit 601 is further configured to: determine a CSI-RS downlink receiving beam corresponding to the downlink transmission beam of the CSI-RS signal, and receive the base station by using the transceiver component 602 according to the CSI-RS downlink receiving beam. The CSI-RS signal is sent; the channel estimation value is obtained according to the CSI-RS signal received by the transceiver unit 602, and the channel state information is obtained according to the channel estimation value, and then sent to the base station by the transceiver unit 602.

Optionally, the transceiver unit 602 is further configured to: receive CSI process configuration information sent by the base station, where the CSI process configuration information includes association indication information of one or more CSI-RS signals;

The processing unit 601 obtains a channel estimation value according to the CSI-RS signal received by the transceiver unit 602, and obtains channel state information according to the channel estimation value, and then sends the channel state information to the base station through the transceiver unit 602. For obtaining, according to the CSI-RS signal received by the transceiver unit 602, a channel estimation value of one or more CSI-RS signals associated with each process; one or more CSI-RS signals associated according to each process The channel estimation value determines channel state information and feeds back to the base station through the transceiver unit 602.

Optionally, the processing unit 601 determines the channel state information according to the channel estimation value of the one or more CSI-RS signals associated with each process, and when the channel state information is fed back to the base station by using the transceiver unit 602, specifically:

Optionally, when the processing unit 601 receives, by using the transceiver unit 602, the signal sent by the base station by using the data channel, the processing unit 601 is specifically configured to:

If the first beamforming mode is that the data channel uses the primary downlink transmission beam transmission, the downlink receiving beam corresponding to the primary downlink transmission beam is received by the transceiver unit 602; or

If the first beamforming mode is that the data channel uses the auxiliary downlink transmission beam transmission, the downlink receiving beam corresponding to the secondary downlink transmission beam is received by the transceiver unit 602; or

If the first beamforming mode is that the data channel uses the primary downlink transmitting beam and the secondary downlink beam to perform space division multiplexing transmission, the downlink receiving beam corresponding to the primary downlink transmitting beam and the secondary downlink transmitting beam respectively passes through the transceiver unit. 602 for receiving; or

If the first beamforming mode is that the data channel uses the primary downlink transmission beam and the secondary downlink beam for diversity transmission, the downlink receiving beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam respectively is received by the transceiver unit 602. .

Based on the same inventive concept, an embodiment of the present invention further provides a base station, as shown in FIG. 7, including:

The processing unit 701 is configured to configure, by the terminal, N control resource subsets, where the one control resource subset includes multiple resource units for control channel transmission;

The transceiver unit 702 is configured to send configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; Within the subset of at least one control resource in the control resource subset, a control signal is sent to the terminal.

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

Based on the same inventive concept, an embodiment of the present invention further provides a terminal, as shown in FIG. 8, including:

The transceiver unit 802 is configured to receive configuration information of the N control resource subsets sent by the base station, where the one control resource subset includes multiple resource units used for control channel transmission, where the configuration information includes each control resource sub- And transmitting, by the base station, the control signal sent by the at least one control resource subset in the N control resource subsets.

Optionally, the terminal further includes a processing unit 801, configured to: determine, according to the indication information of the downlink transmit beam corresponding to the at least one control resource subset, the downlink receive beam that receives the subset of the control resources. ;

When the receiving and receiving unit 802 receives the control signal sent by the base station in the at least one control resource subset of the N control resource subsets, specifically, the downlink receiving beam determined by the processing unit 801 is A control signal is received within the subset of control resources.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing device The processor is operative to generate a machine such that instructions executed by a processor of a computer or other programmable data processing device are generated for implementation in a block or blocks of a flow or a flow and/or block diagram of the flowchart Functional device.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

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

Claims

A large-scale antenna beam transmission method, comprising:

Determining, by the base station, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal from the plurality of downlink transmit beams;

Sending, by the base station, configuration information of the primary downlink transmission beam and configuration information of the at least one secondary downlink transmission beam to the terminal;

Determining, by the base station, a first beamforming manner corresponding to a signal of a data channel between the terminal, where the first beamforming manner is by using the primary downlink transmission beam and/or the at least one secondary downlink beam Beamforming the signal of the data channel;

The base station carries the indication information of the first beamforming manner in a control signal, and sends the information to the terminal through a control channel, so that the terminal receives the base station according to the first beamforming manner. The signal transmitted by the data channel.
The method of claim 1, wherein the base station determines, from the plurality of downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal, including:

Sending, by the base station, a training signal to the terminal according to the multiple downlink transmit beams, so that the terminal determines signal strength information of the multiple downlink transmit beams and sends the signal strength information to the base station; Determining, by the signal strength information of the multiple downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal from the multiple downlink transmit beams; or

Receiving, by the base station, the recommended downlink transmission beam information reported by the terminal, and determining, according to the recommended downlink transmission beam information, a primary downlink transmission beam and at least one auxiliary downlink transmission beam for the terminal; or

Determining, by the base station, signal strength information of the multiple uplink receiving beams according to the received data signal and/or the control signal of the terminal; the base station determining, according to the determined signal strength information of the multiple uplink receiving beams, a primary downlink transmit beam and at least one secondary downlink transmit beam of the terminal; or

The base station selects at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and sends the CSI-RS to the terminal by using the downlink CSI-RS transmission beam. And receiving, by the base station, channel state information determined by the terminal for the CSI-RS signal, and determining, according to the channel state information, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal.
The method according to claim 2, wherein the base station receives channel state information determined by the terminal for the CSI-RS signal, and determines a master for the terminal according to the channel state information. The downlink transmit beam and the at least one secondary downlink transmit beam, including:

Receiving, by the base station, channel state information determined by the terminal for each CSI-RS signal, and corresponding to a downlink corresponding to a CSI-RS signal with the best channel quality in the channel state information according to the channel state information The CSI-RS transmission beam is used as the primary downlink beam, and one or more downlink CSI-RSs 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 sent. a beam as the at least one auxiliary downlink beam.
The method according to claim 1, wherein the base station carries the indication information of the first beamforming mode in a control signal, and sends the information to the terminal by using the control channel, including:

The base station configures N control resource subsets for the terminal, where one control resource subset includes multiple a resource unit that controls channel transmission, and a subset of control resources is associated with a downlink transmit beam;

Sending, by the base station, configuration information of the N control resource subsets to the terminal, so that the terminal monitors the N control resource subsets;

Transmitting, by the base station, indication information of the first beamforming manner to the control signal, and transmitting, by using one or more control resource subsets in the N control resource subsets, to the terminal, to enable When the terminal detects that the effective control channel exists in the N control resource subsets, the terminal obtains the indication information of the first beamforming manner in the control signal, where the effective control channel refers to a control signal of the control channel. It is sent to the terminal or sent to the terminal group where the terminal is located.
The method according to claim 1, wherein the base station carries the indication information of the first beamforming manner in a control signal, and before sending the control channel to the terminal, the method further includes:

Determining, by the base station, a second beamforming manner corresponding to a control signal of a control channel between the terminal, where the second beamforming manner is by using the primary downlink transmission beam and/or the at least one auxiliary downlink Beams beamforming a control signal of the control channel;

The base station carries the indication information of the first beamforming mode in the control signal, and sends the information to the terminal through the control channel, including:

The base station carries the indication information of the first beamforming manner in a control signal, and after performing beamforming on the control signal by using the second beamforming manner, sending, by using the control channel, the terminal.
The method of claim 1 wherein the method further comprises:

Updating, by the base station, the first beamforming manner according to channel state information corresponding to the primary downlink transmission beam and channel state information corresponding to the at least one secondary downlink transmission beam that is sent by the terminal; or

When the base station continues to receive the hybrid automatic repeat request (HARQ) non-acknowledgement NACK feedback sent by the terminal or does not receive feedback from the terminal, according to the primary downlink transmission beam and the at least one secondary downlink transmission beam, Updating the first beamforming mode.
The method of claim 6 wherein the method further comprises:

The CSI-RS signal configuration information that is sent by the base station to the terminal, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, where the CSI-RS signal downlink transmission beam is the main One of a downlink transmit beam and the at least one secondary downlink transmit beam;

The base station sends a CSI-RS signal by using the CSI-RS signal downlink transmission beam;

The base station receives channel state information that is measured by the terminal based on the CSI-RS signal.
The method of claim 7 wherein the method further comprises:

The base station sends CSI process configuration information to the terminal, where the CSI process configuration information includes association indication information of one or more CSI-RS signals;

The base station receives channel state information measured by the terminal according to one or more CSI-RS signals associated with the CSI process.
The method according to any one of claims 1 to 8, wherein the first beamforming method comprises part or all of the following:

Beamforming the signal of the data channel by the primary downlink transmission beam, beamforming the signal of the data channel by the secondary downlink transmission beam, and spatially multiplexing the signal of the data channel by the primary downlink transmission beam and the auxiliary downlink beam Forming, diversity beamforming of signals of the data channel through the primary downlink transmit beam and the secondary downlink beam.
The method of claim 5 wherein said second beamforming means comprises some or all of the following:

The control signal of the control channel is beamformed by the primary downlink transmission beam, the control signal of the control channel is beamformed by the secondary downlink transmission beam, and the control signal of the control channel is diversityd by the primary downlink transmission beam and the secondary downlink beam. Beamforming.
A large-scale antenna beam transmission method, comprising:

The terminal receives the configuration information of the primary downlink transmission beam and the configuration information of the at least one secondary downlink transmission beam, and determines the primary downlink transmission beam and the at least one secondary downlink transmission beam;

Receiving, by the terminal, a control signal sent by the base station, where the control signal includes a first beamforming manner corresponding to a signal of a data channel between the base station and the terminal, where the first beamforming manner is Beamforming a signal of the data channel by using the primary downlink transmit beam and/or the at least one secondary downlink beam;

And receiving, by the terminal, a signal sent by the base station by using the data channel according to the first beamforming manner.
The method of claim 11, wherein the receiving, by the terminal, the control signal sent by the base station comprises:

Receiving, by the terminal, the control signal that is formed by the second beamforming mode beam sent by the base station by using a control channel with the terminal, where the second beamforming mode is sent by using the primary downlink A beam and/or the at least one secondary downlink beam beamforms a control signal of the control channel.
The method of claim 11 wherein the method further comprises:

The terminal receives CSI-RS signal configuration information sent by the base station, where the CSI-RS signal configuration information includes configuration information of a CSI-RS signal downlink transmission beam, where the CSI-RS signal downlink transmission beam is the main One of a downlink transmit beam and the at least one secondary downlink transmit beam;

The terminal determines a downlink receiving beam of a CSI-RS signal corresponding to the downlink transmission beam of the CSI-RS signal, and receives a CSI-RS signal sent by the base station according to the downlink receiving beam of the CSI-RS signal;

The terminal obtains a channel estimation value according to the received CSI-RS signal, and obtains channel state information according to the channel estimation value, and then sends the channel state information to the base station.
The method of claim 13 wherein the method further comprises:

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;

Determining, by the terminal, 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 channel state information according to the channel estimation value, and then sends the channel state information to the base station, including:

Obtaining, by the terminal, a channel estimation value of one or more CSI-RS signals associated with each process according to the received CSI-RS signal;

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.
The method according to claim 14, wherein the terminal determines channel state information and feeds back to the base station according to channel estimation values of one or more CSI-RS signals associated with each CSI process, including:

The terminal determines channel state information corresponding to each CSI-RS signal according to channel estimation values of each CSI-RS signal associated with each process, and feeds back channel state information corresponding to each CSI-RS signal to the base station. ;or

The terminal determines the integrated channel state according to the channel estimation value of the CSI-RS signal associated with each CSI process. Information, and the integrated channel state information is fed back to the base station; or

The terminal selects one or more CSI-RS signals according to channel estimation values of each CSI-RS signal associated with each process, and respectively determines and feeds back channel state information corresponding to each selected CSI-RS signal, And identifying the selected identification information of each CSI-RS signal to the base station.
The method according to any one of claims 11 to 15, wherein the receiving, by the terminal, the signal that the base station sends the data channel according to the first beamforming manner comprises:

If the first beamforming mode is that the data channel uses the primary downlink transmit beam transmission, the terminal receives the downlink receive beam corresponding to the primary downlink transmit beam; or

If the first beamforming mode is that the data channel uses the auxiliary downlink transmission beam transmission, the terminal uses the downlink receiving beam corresponding to the auxiliary downlink transmission beam to receive; or

If the first beamforming mode is that the data channel uses the primary downlink transmission beam and the secondary downlink beam for space division multiplexing transmission, the terminal receives the downlink downlink beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam respectively. ;or

If the first beamforming mode is that the data channel uses the primary downlink transmission beam and the secondary downlink beam for diversity transmission, the terminal receives the downlink downlink beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam respectively.
A large-scale antenna beam transmission method, comprising:

The base station configures a subset of N control resources for the terminal, where the subset of control resources includes a plurality of resource units for control channel transmission;

The base station sends the configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset;

The base station sends a control signal to the terminal in at least one control resource subset of the N control resource subsets.
The method according to claim 17, wherein the base station sends a control signal to the terminal in the one or more control resource subsets in the N control resource subsets, including:

The base station sends the control signal to the terminal in a downlink transmission beam corresponding to at least one control resource subset in the N control resource subsets.
A large-scale antenna beam transmission method, comprising:

The terminal receives the configuration information of the N control resource subsets sent by the base station, where the one control resource subset includes multiple resource units for control channel transmission, and the configuration information includes downlink transmission corresponding to each control resource subset. Indicator information of the beam;

The terminal receives a control signal sent by the base station through at least one control resource subset in the N control resource subsets.
The method of claim 19, wherein the receiving, by the terminal, the control signal sent by the base station in the at least one control resource subset of the N control resource subsets comprises:

Determining, by the terminal, the downlink receiving beam that receives the subset of the control resources according to the indication information of the downlink transmission beam corresponding to the at least one control resource subset;

The terminal receives a control signal in the subset of control resources by using the downlink receive beam.
A base station, comprising:

a processing unit, configured to determine, from the multiple downlink transmit beams, a primary downlink transmit beam for the terminal and at least one a secondary downlink transmit beam; a first beamforming manner corresponding to a signal of the data channel between the terminals, where the first beamforming mode is through the primary downlink transmit beam and/or the at least one auxiliary The downlink beam performs beamforming on the signal of the data channel;

a transceiver unit, configured to send configuration information of the primary downlink transmit beam and configuration information of the at least one secondary downlink transmit beam to the terminal; and carry the indication information of the first beamforming manner into a control signal And transmitting, by the control channel, to the terminal, so that the terminal receives a signal sent by the base station by using the data channel according to the first beamforming manner.
The base station according to claim 21, wherein the processing unit determines, when determining a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal, from the plurality of downlink transmit beams, specifically:

Transmitting, by the transceiver unit, a training signal to the terminal according to the multiple downlink transmit beams, so that the terminal determines signal strength information of the multiple downlink transmit beams and sends the signal strength information to the base station; Receiving, by the received signal strength information of the multiple downlink transmit beams, determining, from the plurality of downlink transmit beams, a primary downlink transmit beam and at least one secondary downlink transmit beam for the terminal; or

Receiving, by the transceiver unit, recommended downlink transmission beam information reported by the terminal; determining, according to the recommended downlink transmission beam information, a primary downlink transmission beam and at least one secondary downlink transmission beam for the terminal; or

Determining, according to the data signal and/or the control signal of the terminal, the signal strength information of the multiple uplink receiving beams, and determining, according to the determined signal strength information of the multiple uplink receiving beams, the terminal information a primary downlink transmit beam and at least one secondary downlink transmit beam; or

Selecting at least one downlink transmission beam from the plurality of downlink transmission beams as a downlink channel state information reference signal CSI-RS transmission beam, and transmitting, by the transceiver unit, the CSI to the terminal by using the downlink CSI-RS transmission beam Receiving, by the transceiver unit, channel state information determined by the terminal for the CSI-RS signal, and determining, according to the channel state information, a primary downlink transmit beam and at least one auxiliary for the terminal Downstream transmit beam.
The base station according to claim 22, wherein the processing unit receives, by the transceiver unit, channel state information determined by the terminal for the CSI-RS signal, and determines, according to the channel state information, When the primary downlink transmission beam and the at least one secondary downlink transmission beam of the terminal are used, specifically:

Receiving, by the transceiver unit, channel state information determined by the terminal for each CSI-RS signal, and correspondingly, according to the channel state information, a CSI-RS signal with the best channel quality in the channel state information The downlink CSI-RS transmission beam is used as the primary downlink beam, and one or more downlink CSIs 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. The RS transmits a beam as the at least one secondary downlink beam.
The base station according to claim 21, wherein the transceiver unit carries the indication information of the first beamforming manner in a control signal, and is sent to the terminal through a control channel, specifically for:

Configuring N control resource subsets for the terminal, where one control resource subset includes multiple resource units for control channel transmission, and one control resource subset is associated with one downlink transmission beam;

And transmitting configuration information of the N control resource subsets to the terminal, so that the terminal monitors the N control resource subsets;

And transmitting the indication information of the first beamforming manner to the control signal, and transmitting, by using one or more control resource subsets in the N control resource subsets, to the terminal, so that the terminal is in Monitoring the N controls When the effective control channel exists in the resource subset, the indication information of the first beamforming manner in the control signal is obtained, where 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.
The base station according to claim 21, wherein the processing unit is further configured to:

And transmitting, by the transceiver unit, the indication information of the first beamforming manner to a control signal, and before transmitting to the terminal by using a control channel, determining a corresponding to a control signal of a control channel between the terminal a second beamforming manner, wherein the second beamforming manner is to perform beamforming on a control signal of the control channel by using the primary downlink transmission beam and/or the at least one secondary downlink beam;

The transceiver unit carries the indication information of the first beamforming manner in a control signal, and is sent to the terminal by using the control channel, and is specifically used to:

The indication information of the first beamforming manner is carried in the control signal, and the control signal is beamformed by the second beamforming manner, and then sent to the terminal through the control channel.
The base station according to claim 21, wherein the processing unit is further configured to:

Updating the first beamforming mode according to the channel state information corresponding to the primary downlink transmission beam and the channel state information corresponding to the at least one secondary downlink transmission beam that are received by the terminal; or

And transmitting, by the transceiver unit, the hybrid automatic retransmission request, the HARQ non-acknowledgment NACK feedback sent by the terminal, or receiving the feedback of the terminal, according to the primary downlink transmission beam and the at least one secondary downlink transmission. A beam that updates the first beamforming mode.
The base station according to claim 26, wherein the transceiver unit is further configured to:

CSI-RS signal configuration information sent to the terminal, where the CSI-RS signal configuration information includes configuration information of a downlink transmission beam of a CSI-RS signal, where the downlink transmission beam of the CSI-RS signal is the primary downlink transmission beam And one of the at least one auxiliary downlink transmission beam;

Transmitting a CSI-RS signal by using the CSI-RS signal downlink transmission beam;

Receiving channel state information measured by the terminal based on the CSI-RS signal.
The base station according to claim 27, wherein the transceiver unit is further configured to:

Sending CSI process configuration information to the terminal, where the CSI process configuration information includes association indication information of one or more CSI-RS signals;

Receiving channel state information measured by the terminal 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 mode comprises some or all of the following:

Beamforming the signal of the data channel by the primary downlink transmission beam, beamforming the signal of the data channel by the secondary downlink transmission beam, and spatially multiplexing the signal of the data channel by the primary downlink transmission beam and the auxiliary downlink beam Forming, diversity beamforming of signals of the data channel through the primary downlink transmit beam and the secondary downlink beam.
The base station according to claim 27, wherein said second beamforming mode comprises some or all of the following:

Performing beamforming on the control signal of the control channel through the primary downlink transmission beam, beamforming the control signal of the control channel through the secondary downlink transmission beam, and performing control channel on the primary downlink transmission beam and the secondary downlink beam The control signal is subjected to diversity beamforming.
A terminal, comprising:

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 the base station, and receive a control signal sent by the base station, where the control signal includes the base station and the terminal a first beamforming manner corresponding to the signal of the data channel, wherein the first beamforming manner is to beamform the signal of the data channel by using the primary downlink transmission beam and/or the at least one secondary downlink beam ;

a processing unit, configured to determine, according to the configuration information of the primary downlink transmit beam and the configuration information of the at least one secondary downlink transmit beam that are sent by the base transceiver, the primary downlink transmit beam and the at least one secondary downlink transmit beam; Receiving, by the transceiver unit, a signal sent by the base station through the data channel according to the first beamforming manner.
The terminal according to claim 31, wherein when the transceiver unit receives the control signal sent by the base station, it is specifically used to:

Receiving, by the base station, the control signal that is beamformed by the second beamforming mode, which is sent by using a control channel between the base station, and the second beamforming manner is to pass the primary downlink transmission beam and/or Or the at least one auxiliary downlink beam performs beamforming on a control signal of the control channel.
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 a CSI-RS signal downlink Transmit beam configuration information, where 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 processing unit is further configured to: determine a CSI-RS downlink receive beam corresponding to the downlink transmit beam of the CSI-RS signal, and receive, by using the CSI-RS downlink receive beam, the base station to send, according to the CSI-RS downlink receive beam The CSI-RS signal is obtained according to the CSI-RS signal received by the transceiver unit, and the channel state information is obtained according to the channel estimation value, and then sent to the base station by using the transceiver unit.
The terminal according to claim 33, wherein the transceiver unit is further configured to: receive CSI process configuration information sent by the base station, where the CSI process configuration information includes one or more CSI-RS signals. Correlation indication information; determining one or more CSI-RS signals associated with each process according to the association indication information;

The processing unit obtains a channel estimation value according to the CSI-RS signal received by the transceiver unit, and obtains channel state information according to the channel estimation value, and then sends the channel state information to the base station by using the transceiver unit, where the processing unit is specifically configured to: The CSI-RS signal received by the transceiver unit obtains channel estimation values of one or more CSI-RS signals associated with each process; and channel estimation values of one or more CSI-RS signals associated with each process, Channel state information is determined and fed back to the base station by the transceiver unit.
The terminal according to claim 34, wherein the processing unit determines channel state information according to channel estimation values of one or more CSI-RS signals associated with each process, and feeds back to the When the base station is used, it is specifically used to:

Determining, according to channel estimation values of each CSI-RS signal associated with each process, channel state information corresponding to each CSI-RS signal, and feeding back channel state information corresponding to each CSI-RS signal to the base station; or

Determining integrated channel state information according to channel estimation values of CSI-RS signals associated with each CSI process, and feeding the integrated channel state information to the base station; or

Select one or more of the channel estimation values for each CSI-RS signal associated with each process The CSI-RS signal respectively determines and feeds back channel state information corresponding to each selected CSI-RS signal, and feeds back the selected identification information of each CSI-RS signal to the base station.
The terminal according to any one of claims 31 to 35, wherein the processing unit receives, by the transceiver unit, a signal transmitted by the base station through the data channel according to the first beamforming manner, Specifically used for:

If the first beamforming mode is that the data channel uses the primary downlink transmission beam transmission, the downlink receiving beam corresponding to the primary downlink transmission beam is received by the transceiver unit; or

If the first beamforming mode is that the data channel uses the auxiliary downlink transmission beam transmission, 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 primary downlink transmitting beam and the secondary downlink beam to perform space division multiplexing transmission, the downlink receiving beam corresponding to the primary downlink transmitting beam and the secondary downlink transmitting beam respectively passes through the transceiver unit. Receiving; or

If the first beamforming mode is that the data channel uses the primary downlink transmission beam and the secondary downlink beam for diversity transmission, the downlink receiving beam corresponding to the primary downlink transmission beam and the secondary downlink transmission beam respectively is received by the transceiver unit.
A base station, comprising:

a processing unit, configured to configure, by the terminal, a subset of N control resources, where the subset of control resources includes multiple resource units for control channel transmission;

a transceiver unit, configured to send configuration information of the N control resource subsets to the terminal, where the configuration information includes indication information of a downlink transmission beam corresponding to each control resource subset; and the N controls Within the subset of at least one control resource in the subset of resources, a control signal is sent to the terminal.
The base station according to claim 37, wherein the transceiver unit transmits a control signal to the terminal in at least one control resource subset of the N control resource subsets, specifically for: And transmitting, by the downlink transmission beam corresponding to the at least one control resource subset in the N control resource subsets, the control signal to the terminal.
A terminal, comprising:

The transceiver unit is configured to receive configuration information of the N control resource subsets sent by the base station, where the control resource subset includes multiple resource units for control channel transmission, where the configuration information includes each control resource subset Corresponding downlink transmit beam indication information; receiving, by the base station, a control signal sent in at least one control resource subset in the N control resource subsets.
The terminal according to claim 39, wherein the terminal further comprises a processing unit, the processing unit is configured to: determine to receive the indication according to the indication information of the downlink transmission beam corresponding to the at least one control resource subset Controlling a downlink receive beam of a subset of resources;

When the receiving and receiving unit receives the control signal sent by the base station in the at least one control resource subset of the N control resource subsets, the transceiver unit is specifically configured to: use the processing unit to determine the downlink receiving beam in the Control signals are received within a subset of control resources.
A base station, comprising: a memory, a processor, and a transceiver; wherein

The memory is for storing a computer readable program;

The processor, by running a program in the memory, to complete the method of any one of claims 1 to 10;

The transceiver is for receiving and transmitting data under the control of the processor.
A terminal, comprising: a memory, a processor, and a transceiver; wherein

The memory is for storing a computer readable program;

The processor, by running a program in the memory, to complete the method of any one of claims 11 to 16;

The transceiver is for receiving and transmitting data under the control of the processor.
A base station, comprising: a memory, a processor, and a transceiver; wherein

The memory is for storing a computer readable program;

The processor, by running a program in the memory, to complete the method of any one of claims 17 or 18;

The transceiver is for receiving and transmitting data under the control of the processor.
A terminal, comprising: a memory, a processor, and a transceiver; wherein

The memory is for storing a computer readable program;

The processor, by running a program in the memory, to complete the method of any one of claims 19 or 20;

The transceiver is for receiving and transmitting data under the control of the processor.