WO2017121392A1

WO2017121392A1 - Transmission method for implementing millimeter wave communication, and base station and terminal

Info

Publication number: WO2017121392A1
Application number: PCT/CN2017/071171
Authority: WO
Inventors: 梅猛; 刘文豪
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-01-15
Filing date: 2017-01-13
Publication date: 2017-07-20
Also published as: CN106982437A; CN106982437B

Abstract

A transmission method for implementing millimeter wave communication, and a base station and a terminal. The transmission method can comprise: a base station performing hybrid beam forming, and when performing beam training, sending different pieces of port and beam combination information to a terminal, and sending signalling for triggering a feedback mode to the terminal according to a current available port resource condition; and the base station reallocating a transmitting port and beam combination according to a current available port resource condition and transmitting port and beam combination information, fed back by a port of the terminal, about the base station, and feeding the reallocated transmitting port and beam combination information back to the terminal.

Description

Transmission method, base station and terminal for realizing millimeter wave communication

Technical field

The present disclosure relates to the field of millimeter wave communication, for example, to a transmission method, a base station, and a terminal for implementing millimeter wave communication.

Background technique

With the development of communication technologies, the service data processing capability of low-frequency carriers has been unable to meet the growing demand for data services. Millimeter wave communication has become one of the methods that can solve high-speed data communication. The wireless signal energy transmitted by millimeter wave has high directivity. The research results show that the wireless transmission is carried out in the 60 GHz band, and 99.99% of the signal energy is concentrated in the beam range of 4.7 degrees. Therefore, when wireless communication is performed using the millimeter wave band, usually The directional transmission of multiple beams is performed using a high frequency directional antenna or a phased array. Moreover, when the terminal exists for multi-channel reception, each channel can perform data transmission with multiple ports matched by the base station. When there are multiple terminals, the terminal can flexibly utilize the resources of the multi-port of the base station to exchange data, thereby becoming a communication system. One of the problems that the design needs to solve.

In the related art, a data communication technology scheme of a multi-user and a base station includes a technology introduced in a Long Term Evolution (LTE) system technology and an 802.11ad protocol of the Institute of Electrical and Electronics Engineers (IEEE). However, there are some shortcomings in the data communication technology solutions in the related art.

Among them, the LTE solution has the following disadvantages: Massive Multiple-Input Multiple-Output (Massive MIMO) technology introduces more ports, generally requires 32 or more port numbers, and high-frequency communication Limited by device cost, the number of ports is limited, and all ports in Massive MIMO technology share an antenna array, and the spacing of each antenna element in the entire antenna array is basically the same, without obvious physical spacing, resulting in beam generation. The physical distinction is not high enough. When using non-massive MIMO technology in LTE for data transmission, the transmitter only performs digital precoding and cannot support finer beam training. The terminal only performs omnidirectional reception and cannot generate a finer beam. That is, if the base station implements fine beam training or transmission, the terminal cannot align with the base station through the fine beam, which will eventually affect the coverage of the base station signal.

The transmission and feedback schemes introduced in the IEEE 802.11ad protocol have the following disadvantages: the beam training method is fixed, and only the time-division method can be used for beam training, and all high-frequency directional antennas of the sender and receiver of the beam training are used (Directional Multi- Gigabit, DMG) counts the number of antennas and the number of sectors, for example, the number of antennas of one DMG is three, including antenna 1, antenna 2, and antenna 3, wherein antenna 1 makes With 4 sectors, antenna 2 uses 3 sectors and antenna 3 uses 2 sectors. The responder uses 2 DMG antennas, then the total number of scans is 18, through beam training and feedback. In this way, beam selection and feedback cannot be flexibly performed according to actual requirements, and the data transmission method is fixed. The base station and the terminal can only select one port for data transmission according to the result of beam training, and cannot flexibly cope with clustering and clustering in high-frequency communication. phenomenon.

Summary of the invention

The embodiment provides a transmission method, a base station and a terminal for realizing millimeter wave communication, so as to solve the technical problem of clustering and clustering in high frequency communication.

This embodiment provides a transmission method for implementing millimeter wave communication, including:

The base station performs hybrid beamforming, and performs beam training on the terminal, and sends all the transmission port and beam combination information to the terminal, and sends signaling for triggering the feedback mode to the terminal according to the current available port resource status of the base station;

The base station reassigns the transmit port and the beam combination according to the currently available port resource of the base station and the transmit port and beam combination information of the base station fed back by the terminal port, and feeds back the retransmitted transmit port and beam combination information to The terminal.

Optionally, the signaling includes a one-bit binary number identifier; when the binary number identifier is 0, the receiving terminal feeds back a single selected transmit port and beam combination corresponding to each transmit port on the base station side, when the binary When the number is 1, the receiving terminal feeds back a plurality of selected transmitting ports and beam combinations corresponding to each transmitting port on the base station side; or when the binary number is 0, the transmitting terminal corresponds to each transmitting port on the base station side. Multiple selected transmit ports and beam combinations, when the binary number is identified as 1, a single selected transmit port and beam combination corresponding to each transmit port on the base station side fed back by the receiving terminal.

Optionally, the single selected transmit port and beam combination corresponding to each transmit port on the base station side is a single transmit port and beam combination with the largest SINR value or SNR value and satisfying the first specified condition; each transmit on the base station side The plurality of selected transmit ports and beams corresponding to the port are combined into a plurality of transmit ports and beam combinations whose SINR value or SNR value satisfies the second specified condition.

Optionally, the signaling includes a number of transmit ports currently available to the base station.

Optionally, after performing synchronization with the terminal, the base station sends signaling for triggering a feedback mode to the terminal when performing beam information interaction with the terminal; or, the base station is in the After the terminal completes the synchronization, in the start frame of the transmit beam training, signaling for triggering the feedback mode is sent to the terminal.

Optionally, the method may further include: the base station separately recording beam training of each transmitting port The number of times of training, the number of beam training for each transmitting port is the number of beams that are shaped by the RF beam that the transmitting port needs to perform RF beam training; and the training of the RF beam corresponding to the transmitting port of the base station is performed once, then the count is decremented by 1, when counting When 0, the transmission beam training of the base station transmitting port is completed.

Optionally, the method may further include: after the base station feeds back the retransmitted transmit port and beam combination information to the terminal, according to information fed back by each port of the terminal, The port and the beam combination information that is reassigned by the port. When the base station performs precoding, the same data is sent for each port of the terminal, or different ports are sent for each port according to different port information of the terminal. The data.

This embodiment also provides a base station, including:

The beam training module is configured to perform hybrid beamforming, and when performing beam training, send all the transmission port and beam combination information to the terminal, and send signaling for triggering the feedback mode to the terminal according to the currently available port resource status of the base station; And an allocating module, configured to reallocate the transmit port and the beam combination according to the currently available port resource status of the base station and the transmit port and beam combination information of the base station fed back by the terminal port, and combine the retransmitted transmit port and beam combination Information is fed back to the terminal.

Optionally, the beam training module is configured to send binary number identification signaling, and when the binary number identifier is 0, receive a single selected transmit port and beam combination corresponding to each transmit port of the base station side fed back by the terminal, When the binary number identifier is 1, the receiving terminal feeds back a plurality of selected transmitting ports and beam combinations corresponding to each transmitting port on the base station side; or when the binary number identifier is 0, the receiving terminal feeds back the base station side. a plurality of selected transmit ports and beam combinations corresponding to the transmit ports, when the binary number is 1, a single selected transmit port and beam combination corresponding to each transmit port on the base station side fed back by the receiving terminal; or the beam A training module is arranged to transmit signaling including the number of ports currently available to the base station.

Optionally, the beam training module is configured to: after the terminal completes synchronization, send signaling for triggering the feedback mode to the terminal when performing beam information interaction with the terminal; or In the start frame, signaling for triggering the feedback mode is sent to the terminal.

Optionally, the beam training module is configured to separately record the number of times that each of the transmitting ports performs beam training, and the number of times that each of the transmitting ports performs beam training is that the transmitting port needs to perform radio frequency beam training for RF beamforming. The number of beams; the radio frequency beam training corresponding to the base station transmitting port is performed once, Then, the count is decremented by 1. When the count is 0, it indicates that the transmission beam training of the base station transmitting port is completed.

Optionally, the base station may further include: a precoding module, configured to: after the allocation module feeds back the retransmitted transmit port and beam combination information to the terminal, according to information and information fed back by each port of the terminal The allocation module is configured to retransmit the transmit port and the beam combination information of each port of the terminal. When performing precoding, the same data is sent for each port of the terminal, or according to different port information of the terminal, Each port of the terminal sends different data.

The embodiment further provides a transmission method for implementing millimeter wave communication, including:

The terminal receives all the transmit port and beam combination information generated by the base station hybrid beamforming through each port; the terminal calculates multiple signal and interference plus noise ratio SINR values or letters according to all received transmit ports and beam combinations. a noise ratio SNR value, selecting a transmission port and a beam combination corresponding to each of the transmitting ports on the base station side to be fed back; and, according to the signaling of the trigger feedback manner sent by the base station, the terminal feeding back each selected transmission to the base station The port and beam combination corresponding to the port.

Optionally, when the terminal receives the signaling indication sent by the base station by using a port to use a single transmit port and beam combination feedback, the terminal feeds back, to the base station, a selected transmit port and a beam corresponding to each port. Combining, comprising: calculating, according to the received multiple transmit port and beam combination information sent by the base station through each port, a plurality of SINR values or SNR values, where the terminal will be the largest and satisfy the SINR value of the first specified condition Or the transmit port and beam combination corresponding to the SNR value is fed back to the base station as a single selected transmit port and beam combination corresponding to each transmit port.

Optionally, the method may further include: when receiving all the port transmission information of the base station, all the terminals are 0, the terminal feeds back, by using each port, a single selected transmission port corresponding to each transmission port and Beam combination.

Optionally, when the terminal receives the signaling indication sent by the base station by using the port to use multiple transmit port and beam combination feedback, the terminal sends back the selected transmit port and beam combination to: according to the letter The option is to feed back multiple selected transmit ports and beam combinations to the base station.

Optionally, the terminal, according to the signaling selection, feeds back multiple selected transmit ports and beam combinations to the base station, including: after the base station sends all the transmit ports and beam combinations, according to the received base station Calculating a plurality of SINR values or SNR values by using multiple transmit port and beam combination information sent by each transmit port, and the terminal will meet multiple SINR values or SNR values corresponding to the second specified condition and multiple transmit ports and The beam combination is fed back to the base station as a plurality of selected transmit ports and beam combinations; or when the base station transmits multiple transmit ports and beam combinations to the terminal through the transmit port currently performing beam training, according to the received multiple transmit ports and The beam combining information is used to calculate a plurality of SINR values or SNR values, and multiple transmission ports and beam combinations corresponding to multiple SINR values or SNR values satisfying the third specified condition are used as multiple selections corresponding to the current beam training transmission port. Fixed transmit port and beam The feedback is combined to the base station until beam training is completed.

Optionally, the terminal combines the same transmit port and beam combination of the base station fed back by different ports of the terminal, and only feeds back once.

The embodiment further provides a transmission device for implementing millimeter wave communication, which is disposed in the terminal, and includes:

The receiving module is configured to receive all transmitting port and beam combination information generated by the base station hybrid beamforming; and the selecting module is configured to calculate, according to all the received transmitting port and beam combination information, multiple signal to interference plus noise ratio SINR a value or a signal-to-noise ratio (SNR) value, selecting a transmission port and beam combination information corresponding to each of the transmitting ports on the base station side to be fed back; and a feedback module configured to perform signaling according to a trigger feedback manner sent by the base station to the base station Feedback of the selected transmit port and beam combination for each port selected.

Optionally, the feedback module is configured to: when receiving the signaling sent by the base station, indicating that a single transmit port and beam combination feedback is adopted, according to the received multiple transmit sent by the base station through each transmit port The port and the beam combination information are calculated to obtain a plurality of SINR values or SNR values, and the transmit port and the beam combination corresponding to the SINR value or the SNR value that meet the first specified condition are respectively used as a single selected transmit port corresponding to each transmit port and The beam combination, when all the transmission information of all the transmitting ports of the base station are received, is 0, and the base station is fed back to a single selected transmitting port and beam combination corresponding to each transmitting port on the base station side.

Optionally, the feedback module is configured to: when receiving the signaling sent by the base station, indicating that multiple transmit ports and beam combination feedback are used, according to the signaling, multiple transmit ports corresponding to each transmit port on the base station side The selected transmit port and beam combination are fed back to the base station.

Optionally, the feedback module is configured to: after the base station sends all the transmit ports and beam combinations through all ports, calculate, according to the received transmit port and beam combination information of the base station, each base station side is calculated. A plurality of SINR values or SNR values corresponding to the port, and a plurality of SINR values or SNR values corresponding to the second specified condition of the plurality of SINR values or SNR values corresponding to each port on the base station side And transmitting, by the base station, a plurality of selected transmit ports and beam combinations corresponding to the transmit port to the base station; or, when the base station sends multiple transmit ports and beam combinations to the terminal through the transmit port currently performing beam training, according to the received multiple transmit The port and the beam combination information are used to calculate a plurality of SINR values or SNR values, and the plurality of transmission ports and beam combinations corresponding to the plurality of SINR values or SNR values satisfying the third specified condition are used as the corresponding transmission port of the current beam training. The selected transmit ports and beam combinations are fed back to the base station until beam training is complete.

The embodiment further provides a non-transitory computer readable storage medium storing computer executable instructions for performing any of the above-described transmission methods for implementing millimeter wave communication.

The embodiment further provides a base station, where the base station includes one or more processors, a memory, and a And one or more programs, the one or more programs being stored in the memory, and when executed by the one or more processors, performing any of the above-described transmission methods applied to the base station side for implementing millimeter wave communication.

The embodiment further provides a terminal including one or more processors, a memory, and one or more programs, the one or more programs being stored in a memory, when executed by one or more processors, Any one of the above-described transmission methods for implementing millimeter wave communication applied to the terminal side is performed.

The embodiment further provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions are executed by a computer And causing the computer to perform any of the above-described transmission methods for implementing millimeter wave communication applied to the base station side or the terminal side.

The present disclosure provides a transmission method, a base station, and a terminal for implementing millimeter wave communication, which can solve the impact coverage and clustering clustering phenomenon that may occur in the LTE and IEEE 802.11ad technologies.

DRAWINGS

FIG. 1 is a flowchart of a method for transmitting millimeter wave communication on a base station side in the embodiment.

FIG. 2 is a flowchart of a method for transmitting millimeter wave communication on the terminal side in the embodiment.

FIG. 3 is a schematic diagram of an application scenario in the embodiment.

FIG. 4 is a schematic flowchart of optimal beam feedback in the embodiment.

FIG. 5 is a schematic diagram of multiple preferred beam feedbacks in the present embodiment.

FIG. 6 is a schematic flow chart of multiple preferred beam timing feedbacks in this embodiment.

FIG. 7 is a schematic diagram of multiple sub-band divisions in the embodiment.

FIG. 8 is a schematic diagram of multiple sub-band feedback processes in the embodiment.

FIG. 9 is a schematic diagram of a base station in the embodiment.

FIG. 10 is a schematic diagram of a transmission device for implementing millimeter wave communication in the embodiment.

FIG. 11 is a schematic structural diagram of hardware of a base station in the embodiment.

FIG. 12 is a schematic structural diagram of hardware of a terminal in the embodiment.

detailed description

The embodiments will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the following embodiments and embodiments may be arbitrarily combined with each other.

FIG. 1 is a flowchart of a method for transmitting millimeter wave communication on the base station side in the embodiment. As shown in FIG. 1 , the transmission method in this embodiment may include steps 110 to 120.

In step 110, the base station performs hybrid beamforming, and when performing beam training, sends all the transmission port and beam combination information to the terminal, and sends the information to the terminal according to the currently available port resources of the base station. Signaling for triggering the feedback mode.

In step 120, the base station re-allocates the transmit port and beam combination information according to the current available port resource condition and the transmit port and beam combination information of the base station fed back by each port of the terminal, and re-allocates the transmit port and The beam combining information is fed back to the terminal.

Optionally, the signaling sent by the base station to the terminal may be any of the following manners.

A. The signaling may be a binary number identifier, which is 1 bit. When the binary number identifier is 0, the base station receives a single selected transmit port and beam combination corresponding to each transmit port fed back by the terminal, and when the binary number identifier is 1, the base station receives each transmit port corresponding to the terminal feedback. Multiple selected transmit ports and beam combinations; or, when the binary number is 0, the base station receives a plurality of selected transmit ports and beam combinations corresponding to each transmit port fed back by the terminal, when the binary number identifies When 1, the base station receives a single selected transmit port and beam combination corresponding to each port fed back by the terminal;

B. The signaling may be the number of ports currently available to the base station.

Optionally, the single selected transmit port and beam combination corresponding to each transmit port on the base station side is a single transmit port and beam combination with the largest SINR value or SNR value and satisfying the first specified condition, which is simply referred to as an optimal transmit port and Beam combination;

The plurality of selected transmit ports and beam combinations corresponding to each transmit port on the base station side are multiple transmit ports and beam combinations whose SINR value or SNR value satisfies the second specified condition, and are simply referred to as multiple preferred transmit ports and beam combinations. .

Optionally, after performing synchronization with the terminal, the base station sends signaling for triggering the feedback mode to the terminal when performing beam information interaction with the terminal; or after transmitting synchronization with the terminal, sending In the start frame of the beam training, the signaling is sent to the terminal.

Optionally, the number of times that each port in the base station performs beam training is counted by:

The base station counts each port separately, and the number of times each port beam is trained is the number of beams that the port needs to perform RF beam training for RF beam training.

The radio frequency beam training corresponding to the transmitting port is performed once, and the counting is decremented by 1. When the counting is 0, the transmitting beam training of the transmitting port of the base station side is completed.

The base station reassigning the transmit port and the beam combination information may refer to the base station receiving the maximum set of base station side transmit ports and beam combinations fed back by all the ports of the terminal. That is, in the case that the port resources are not in conflict with other terminals, the maximum number of transmitting ports of the base station is selected, and the transmitting port and beam combination corresponding to each transmitting port are selected according to the feedback of the terminal, and the base station side needs to meet the same time. The requirement to send data through one beam of a port.

The base station returns the content according to the feedback of each port of the terminal and the redistribution of all the ports of the terminal. Port and beam combination. When precoding, the data sent to all ports of the terminal can be one of the following:

Single stream data, the base station sends the same data for all ports of the terminal;

Multi-stream data, the base station sends different data for different ports according to different terminal port information.

As shown in FIG. 3, the base station side has multiple ports, and each port corresponds to a radio frequency (RF) chain. The antenna array corresponding to each RF chain can transmit data through different beams. The port and beam concept and function of the terminal are similar to those of the base station. Each port of the terminal also corresponds to an RF chain. The antenna array corresponding to each RF chain can transmit data through different beams.

The base station transmits data through one or more transmit ports and radio frequency transmit beams corresponding to the transmit ports. The terminal receives data transmitted by the base station by using each receiving port and a receiving beam corresponding to the receiving port. According to the transmit port and beam combination information sent by the base station received by the port on the terminal side, the terminal calculates multiple SINR values or SNR values corresponding to the transmit port and beam combination information of each transmit port on the base station side, and calculates the calculated The multiple SINR values or SNR values corresponding to each transmitting port are compared with the preset SINR value or SNR value of the terminal, and the transmitting port and beam combination of each transmitting port on the base station side that meets the requirements are determined, and each requirement is met. The transmit port and beam combination of the transmit ports are fed back to the base station side. After the base station reallocates the resources of the transmit port and the beam combination, the base station uses the redistributed transmit port and the beam combination to perform data transmission with the terminal.

Optionally, the beam may refer to a resource (eg, originating precoding, terminating precoding, antenna port, antenna weight vector, antenna weight matrix, etc.), and the identity code (Identification, ID) of the beam may be replaced. It is the resource ID because the beam can be bound to some time-frequency code resources for transmission. The beam may also be in a transmission (transmit/receive) manner, and the transmission manner may include space division multiplexing, frequency domain/time domain diversity, and the like.

FIG. 2 is a flowchart of a method for transmitting millimeter wave communication on the terminal side in the embodiment. As shown in FIG. 2, the transmission method in this embodiment may include steps 210 to 230.

In step 210, the terminal receives the transmit port and beam combination generated by the base station hybrid beamforming through the beam of each port.

In step 220, the terminal calculates the SINR value or SNR value corresponding to the transmit port and the beam combination received by each port, and selects the transmit port and beam combination of the base station side to be fed back.

In step 230, according to the signaling of the trigger feedback mode sent by the base station, the terminal feeds back the optimal transmit port and beam combination information corresponding to each transmit port to the base station, or the terminal feeds back to the base station corresponding to each transmit port. Preferred transmit port and beam combining information.

The terminal can obtain the SINR value or the SNR value of the transmit port and beam combination information sent by the base station through calculation, and the value can be used to characterize the strength of the corresponding transmit port and beam transmit signal on the base station side. In this implementation In an example, the terminal side may be pre-set with a SINR value or an SNR value, and the terminal compares the calculated SINR value or SNR value with a preset SINR value or SNR value, and when the calculated SINR value or SNR value is less than a preset SINR value, Or the SNR value, the terminal determines that the SINR value or the SNR value corresponding to the transmit port and beam combination does not meet the requirements.

Optionally, the SINR value or the SNR value preset on the terminal side is a fixed threshold; or the preset SINR value or SNR value on the terminal side dynamically changes according to an actual SINR value or an SNR value. When the preset SINR value or SNR value of the terminal side is a fixed threshold, when the terminal calculates that all the SINR values or SNR values do not satisfy the preset SINR value or the SNR value, the terminal determines that the transmitting port and the beam do not meet the requirements. The combination indicates that the current communication condition between the base station and the terminal is poor, and is not suitable for data transmission. When the SINR value or the SNR value calculated by the terminal exceeds the preset number of SINR values or SNR values of the preset number, the preset SINR value or the SNR value may be increased. When the SINR value or the SNR value calculated by the terminal does not exceed a predetermined number of SINR values or SNR values preset by the terminal side, the terminal side preset SINR value or the SNR value may be reduced.

In this embodiment, the SINR value or the SNR value preset on the terminal side is a fixed threshold value. After the terminal presets the SINR value or the SNR value, the terminal calculates the SINR value or the SNR value corresponding to the received transmit port and the beam combination, and calculates a plurality of SINR values or SNR values corresponding to each transmit port and the preset value. The SINR value or the SNR value is compared. If the calculated multiple SINR value or SNR value corresponding to each transmitting port meets the preset SINR value or SNR value of the terminal, the terminal may determine that the port and the beam of the terminal satisfy the feedback to the base station. The condition can also determine a plurality of ports and beam combinations corresponding to each transmitting port on the base station side that meet the requirements, thereby implementing requirements for multi-channel data transmission between the terminal and the base station.

Optionally, the terminal feedbacks the optimal transmit port and beam combination information corresponding to each transmit port to the base station side by using the compliant port and the beam:

The terminal receives the signaling sent by the base station, where the signaling indicates that the terminal adopts an optimal transmitting port and beam combination feedback. The terminal calculates the SINR value or the SIN value corresponding to the received multiple port and the beam combination, and compares the calculated SINR value or SIN value corresponding to each transmitting port with the preset SINR value or SIN value of the terminal to determine The optimal transmit port and beam combination corresponding to each transmit port of the required base station. The determining the optimal transmit port and the beam combination of each transmit port on the base station side that meets the requirement may be that the terminal determines, according to the calculated multiple SINR values or SNR values corresponding to each transmit port, each transmit port of the base station. And determining, by the plurality of SINR values or SNR values, a plurality of SINR values or SNR values that are greater than or equal to a preset SINR value or an SNR value (which may be referred to as satisfying the first specified condition), and determining the largest of the plurality of SINR values or SNR values. The transmit port and beam combination corresponding to the SINR value or the SNR value, and the transmit port and beam combination are used as the optimal transmit port and beam combination of the transmit port on the base station side.

Optionally, the terminal compares multiple SINR values or SNR values, and when determining that there are multiple identical maximum SINR values or SNR values, indicating that there are multiple optimal transmit ports and beam combinations corresponding to some or one transmitting port on the base station side. One. At this time, the terminal may combine multiple optimal transmit ports and beams corresponding to the transmit port. The feedback is sent to the base station, and an optimal transmit port and beam combination may be randomly selected from the plurality of optimal transmit ports and beam combinations and fed back to the base station. In this embodiment, the terminal randomly determines an optimal transmit port and beam combination feedback from the plurality of optimal transmit ports and beam combinations to the base station.

When the terminal receives all the transmission information of all the transmitting ports on the base station side, the terminal counts all to 0, and each port of the terminal feeds back to the base station the optimal transmitting port and beam combination corresponding to each transmitting port of the base station.

Optionally, each terminal of the terminal feeding back multiple preferred transmit ports and beam combinations to the base station side may include:

The terminal receives the signaling sent by the base station, and uses multiple preferred transmit port and beam combination feedback according to the signaling. The terminal calculates the SINR value or the SNR value corresponding to all the received port and the beam combination, and compares the calculated SINR value or SNR value corresponding to each of the transmitted ports with the preset SINR value or SNR value of the terminal, when calculating When the obtained SINR value or SNR value is greater than or equal to a preset SINR value or an SNR value (referred to as satisfying the second specified condition), a plurality of preferred transmit ports and beam combinations corresponding to each transmit port on the base station side satisfying the requirement are determined.

Optionally, the feedback manner of feeding back multiple preferred transmit ports and beam combinations to the base station side is any one of the following modes:

a, feedback and beam training time-sharing

When the beam training counts sent by all the transmitting ports on the base station side are all 0, the base station side may send all the transmitting port and beam combination information, and the terminal respectively calculates the SINR values corresponding to all the transmitting port and beam combination information sent by the received base station. Or SNR value, determining, according to all SINR values or SNR values corresponding to each transmitting port, multiple preferred transmitting ports and beam combinations corresponding to each port that meet the requirements, and combining multiple preferred transmitting ports and beams corresponding to each port Feedback to the base station.

b, feedback and beam training are performed simultaneously

The base station side sends the transmit port and the beam combination to the terminal through the transmit port that is currently performing beam training, and each port of the terminal calculates multiple SINRs or SNRs according to the received current transmit port and beam combination, and multiple SINRs are calculated according to the calculation. The value or SNR value is selected to meet the required transmit port and beam combination feedback to the base station, and then the corresponding transmit port and beam combination are selected according to the transmit port and beam combination information sent by the base station next beam training for feedback until all transmit ports of the base station are received. The beam training is completed.

Optionally, the terminal may perform an "intersection" operation on the content of the multi-port feedback, and combine the same transmit port and beam combination of the base station side fed back by each port of the terminal, and the same transmit port and beam combination are only fed back once. Reduce feedback overhead.

The terminal can perform the following two methods according to the signaling of the trigger feedback mode and the method for the terminal to perform feedback.

a, for the optimal transmit port and beam combination feedback and a plurality of preferred transmit port and beam combination feedback modes, the terminal may perform the "take intersection" operation when feedback is performed after the beam training of all the transmit ports of the base station is completed;

b. For multiple preferred transmit port and beam combination feedback modes, each terminal needs to perform feedback after each beam training, and the terminal can perform an "intersection" operation.

The method of the embodiment uses the characteristics of the multi-port, multi-beam, narrow-beam and terminal multi-port on the high-frequency communication base station side, and triggers the terminal to perform multi-port feedback through the signaling sent by the base station. Since each port on the terminal side performs a multi-beam combined feedback operation on the received base station side beam, and the base station performs channel re-allocation according to the feedback of the terminal, the base station can be more utilized and more flexible. Assigning ports and beam resources to the terminal can effectively improve link quality and reduce clustering and clustering in high-frequency communication without greatly affecting other terminals under the base station.

FIG. 3 shows an application scenario of the present embodiment. Both the base station side and the terminal side perform multi-port multi-beam training and data transmission. The following describes the disclosure in combination with application scenarios and embodiments.

Embodiment 1

As shown in FIG. 4, a flow of a transmission method for implementing millimeter wave communication, using the optimal transmission port and beam combination feedback method described in this embodiment, may include steps 101-108.

In step 101, after the base station completes synchronization with the terminal, performing beam capability interaction, the base station informs the terminal base station of the port and beam receiving and transmitting capabilities, and the terminal informs the base station terminal of the port and beam receiving and transmitting capabilities.

For a terminal that needs to perform beam training, in the beam capability interaction or in the start frame of the beam training, the base station sends a signaling to the terminal to inform all terminals of the terminal that the base station side optimal transmit port and beam combination feedback needs to be sent and sent. The basis of the signaling is that the base station can provide the number of ports for data transmission and the like for the terminal that needs to perform data transmission for the new access to be less than the threshold.

In step 102, the base station starts transmitting beam training for each transmitting port, and each training frame carries number information of the transmitting port and the beam combination and the number of times the beam training needs to be performed.

According to FIG. 3, there are N _t ports on the base station side, and each port can generate M _t beams corresponding to the radio frequency end, and N _r ports on the terminal side, and each port has M _r beams. The number of beams corresponding to each port may be the same or different. For example, each port corresponds to the same number of beams. When the number of RF end beams corresponding to each port is different, each of the transmissions is performed when the base station performs beam training in the following step. The method of port counting is similar.

When the base station performs beam training, the number of times of beam training for each transmitting port on the base station side is separately counted. In this embodiment, the number of times each of the transmit port beam trainings is counted as M _t ×M _r . The number of times the base station sends data through the beam of each transmitting port traverses all the beams of all ports of the terminal. When the number of beams of each port of the terminal is the same, the number of times that each base station needs to perform beam training can be recorded as M _t ×M _r . Each time the training is decremented by one, when the count is 0, it indicates that the transmitting port training for the receiving beam of all ports of the terminal is completed, and all ports of the terminal can be triggered to start feedback.

In step 103, the terminal receives the transmit port and beam combination information sent by the base station side through the beam of each port, and calculates the SINR value. According to the SINR maximization principle and the first specified condition, an optimal transmit port and beam combination corresponding to each transmit port of the base station that meets the requirement is selected. The SINR maximization principle may be to select multiple transmit ports and beam combinations corresponding to each transmit port on the base station side when there are multiple transmit ports and beam combinations corresponding to each transmit port on the base station side that meet the preset SINR value. The transmitting port and beam combination with the largest SINR value are used as the optimal transmitting port and beam combination corresponding to each port. The first specified condition may be that the calculated SINR values are greater than or equal to the terminal preset SINR value. The setting of the preset SINR value on the terminal side should ensure that the error rate is less than the threshold when data transmission is performed, and can be set according to the demand characteristics of the terminal itself.

According to FIG. 3, there are N _r ports on the terminal side, and each port has M _r beams.

All combinations of transmit beam ports and each port of the terminal side received by the base station, according to the principle of maximizing SINR and a first designated condition, to select all terminals transmit beam ports and combinations meet the requirements of transmit ports and a beam combiner co n _t , where n _{t ≤} N _t , indicating that a total of n _t pairs of base station side transmission ports and M _t beams corresponding to each transmission port are selected, and then the corresponding transmission with the largest SINR value is determined from n _t transmission ports and beam combinations. The port and beam combination is used as the optimal transmit port and beam combination.

In step 104, the terminal side is limited by the received SINR or SNR (the limitation may include, for example, a Quadrature Phase Shift Keying (QPSK) modulation scheme at a 1/8 code rate. The demodulation threshold SNR requirement is -5.1dB, or the demodulation threshold SNR requirement of 7.9dB for 16QAM modulation at 1/2 code rate, etc.), and may not use all the ports of the terminal for feedback and data transmission. . Thus, N _r is assumed that there are ports in the port n _r meet the conditions, the number of selected transmit-ports of the port n _r and the base station to the beam combiner, respectively

Where n _t1 represents a set of optimal ports and beam combinations of the base station selected by the first port of the terminal,

It represents a set of optimal combination of beam ports and port n _r selected base station terminal.

Performing an intersection operation on the result selected by each port of the terminal, the operation may be: the terminal analyzes the selection result of each port, and when the optimal transmission port and beam combination of the base station side corresponding to different ports of the terminal are the same, the operation will be different. The same selection result corresponding to the port is merged, and multiple feedbacks are not performed on the same selection result through multiple terminal ports.

After the intersection operation is performed, the terminal feeds back through multiple ports that meet the requirements, and the content of the feedback may be an optimal transmission port and beam combination corresponding to each transmission port of the base station side that is selected by each port of the terminal according to the preset SINR value. Compared with the number of combinations before the intersection, the content of the feedback is reduced to

among them,

Thereby the overhead can be reduced.

In step 105, the base station receives feedback from the terminal.

Transmitting port and beam combination of the base stations, and reallocating the transmitting port and the beam according to the currently available port resources, that is, feedback from the terminal

Select some available transmit ports and beam combinations in the combination, the number of combinations is

among them,

Since there are many terminals trained at the same time, according to the result of reselection by the base station, the transmit port and beam combination of the base station fed back by some terminals may not be allocated to the terminal, so the reassignment combination needs to be satisfied.

In step 106, the base station feeds back the reassigned transmit port and beam combining information to the terminal.

In step 107, since the feedback of the terminal in step 103 is feedback according to the port condition of the terminal, the terminal can determine which beam of which port to use for receiving according to the feedback of the base station in step 106, and according to the content fed back by the base station. Make measurement feedback.

In step 108, the base station performs precoding processing according to the report result of the terminal, thereby implementing data transmission between the base station and the terminal.

Embodiment 2

As shown in FIG. 5, it is a flow of a transmission and feedback method for millimeter wave communication. Each port of the terminal adopts multiple preferred transmit ports and beam combination feedback modes, and may include steps 201-208.

In step 201, after the base station completes synchronization with the terminal, performing beam capability interaction, the base station informs the terminal base station of the port and beam transmission and reception capabilities, and the terminal informs the base station terminal of the port and beam reception and transmission capabilities.

For a terminal that needs to perform beam training, the base station sends a signaling to the terminal in the beam capability interaction or in the start frame of the beam training, and informs the terminal that all ports need to perform multiple preferred transmit port and beam combination feedback, and send signaling. Based on this, the base station can provide more resources than the threshold for the number of ports for which the new access needs data transmission.

In step 202, the base station starts transmission beam training for each transmission port, and each beam training frame carries number information of the transmission port and beam combination and the number of times the beam training needs to be performed.

In step 203, the terminal receives the transmit port and beam combination information sent by the base station side through the beam of each port, and calculates the SINR value. According to the third specified condition, multiple preferred transmit ports and beam combinations corresponding to each transmit port of the base station that meets the requirements are selected. The third specified condition may be that the calculated SINR values are greater than or equal to a preset SINR value. The setting of the preset SINR value on the terminal side should ensure that the error rate is smaller than the threshold when the data is transmitted. The preset SINR value on the terminal side may be different from the preset SINR value in the first specified condition in the first embodiment. The preset SINR value must be set to ensure multiple transmit port and beam combination feedback, and the settings can be set according to the terminal's own demand characteristics.

The terminal receives the combination of all the transmitting ports and beams on the base station side through the beam of each port, and selects a total of n _t transmitting ports and beam groups that meet the preset SINR value according to each port of the terminal, where n _{t ≤} N _t × M _t, represents the total of the base station side selected transmit-ports and a n _t corresponding to each transmit port beams M _t satisfies a predetermined SINR value of a plurality of transmit ports and beam combination is preferred.

In step 204, the terminal side may not use all the ports of the terminal for feedback and data transmission due to the limitation of receiving the SINR value. Thus, N _r is assumed that there are ports in the port n _r meet the conditions, the number of selected transmit-ports of the port n _r and the base station to the beam combiner, respectively

Where n _t1 represents a set of multiple preferred transmit ports and beam combinations of the base station selected by the first port of the terminal,

It represents a set of transmit beam ports and is preferably a combination of n _r port selected base station a plurality of terminals.

The intersection operation is performed for the result selected by each port of the terminal. The operation may be that the terminal analyzes the selection result of each port. When the base station side transmit port and the beam combination corresponding to different ports of the terminal are the same, the same selection result corresponding to the different ports is merged, and no more than multiple The terminal port performs multiple feedbacks on the same selection result.

After the intersection operation is performed, the terminal performs feedback through multiple ports that meet the requirements. The content of the feedback may be multiple preferred transmission ports and beam combinations corresponding to each transmitting port on the base station side that meets the preset SINR value selected by each port of the terminal. Compared with the number of combinations before taking the intersection, the content of the feedback is reduced to

among them,

Thereby the overhead can be reduced.

In step 205, the base station receives the feedback from the terminal.

among them,

Since there are many terminals trained at the same time, according to the result of reselection by the base station, the transmit port and beam combination of the base station fed back by some terminals may not be allocated to the terminal, so the reassigned combination needs to be satisfied.

At the same time, since each transmitting port on the base station side can only transmit one beam at a time, in the process of reallocating the base station, multiple beams under one port of the base station fed back by the terminal need to be selected. The principle can be:

A. When the optimal beam corresponding to the port is available, the optimal beam is selected for data transmission;

B. If the optimal beam under the port is not available, the suboptimal beam is selected for data transmission, and so on.

The purpose of such feedback of multiple preferred port and beam combinations is to cope with the occurrence of an optimal beam unavailability.

In step 206, the base station feeds back the reassigned transmit port and beam combining information to the terminal.

In step 207, since the feedback of the terminal in step 203 is feedback according to the port condition of the terminal, the terminal can determine which beam of which port to use for receiving according to the feedback of the base station in step 206, and according to the content fed back by the base station. Make measurement feedback.

In step 208, the base station performs precoding processing according to the report result of the terminal, thereby implementing data transmission between the base station and the terminal.

Embodiment 3

As shown in FIG. 6 , it is a feedback flow for transmission and feedback methods for millimeter wave communication. Each port of the terminal adopts multiple preferred port and beam combination feedback modes, and the base station side transmits beam training with the terminal side. The manner in which the port performs feedback simultaneously may include steps 301-305.

In step 301, after the base station completes synchronization with the terminal, performing beam capability interaction, the base station informs the terminal base station of the port and beam transmission and reception capabilities, and the terminal informs the base station terminal of the port and beam reception and Sending ability.

For a terminal that needs to perform beam training, in the beam capability interaction or in the start frame of the beam training, the base station sends a signaling to the terminal to inform the terminal that all ports need to perform multiple preferred port and beam combination feedback, and send signaling. According to the moment, the base station can provide more resources than the threshold for the number of ports for data transmission for the terminal that needs to perform data transmission for the new access.

In step 302, each transmitting port of the base station starts to perform transmission beam training, and all the transmitting ports are simultaneously performed. The transmitting beams of the corresponding radio terminals of each transmitting port may be in the same direction or different, and finally all the transmitting ports and beam combinations need to be trained.

Each training frame carries the number of the transmitting port and the beam of the base station. According to FIG. 5, the base station side has a total of N _t ports, and each port corresponds to the radio end to generate M _t beams, and the terminal side has N _r ports. each port corresponds to M _r beams. The number of beams corresponding to each port may be the same or different. For example, each port corresponds to the same number of beams. When the number of RF end beams corresponding to each port is different, each of the transmissions is performed when the base station performs beam training in the following step. The method of port calculation is similar.

The number of times this embodiment, each base station side transmit port count individually, i.e., M _t is counted for each port, each transmission beam training is required to send each transmit port needs M _r, the base station may be referred to as a beam training M _t ×M _r , then count the count by one for each beam training. In this way, after the transmitting port and beam combination information sent by the base station through the transmitting port is implemented, each port of the terminal can perform receiving training, thereby selecting an optimal transmitting port and beam combination corresponding to each transmitting port, and each transmitting port is selected. The corresponding optimal transmit port and beam combination are fed back to the base station, and the base station re-allocates the transmit port and the beam combination according to the feedback of the terminal and the currently available port resources, and feeds back the re-assigned transmit port and beam combination information to the terminal, and the base station passes Redistributed transmit ports and beams and terminals implement data transmission.

Optionally, the terminal may also determine an optimal receiving port and beam combination corresponding to each receiving port on the terminal side while selecting an optimal transmitting port and beam combination corresponding to each transmitting port. When the base station performs data interaction with the terminal, the base station may specify that the terminal receives the data sent by the base station through the beam of the optimal receiving port of each receiving port, thereby improving transmission efficiency.

Since the base station side performs beam training for multiple ports at the same time, when the count of each port is decremented by 1, all the ports of the terminal perform feedback once. When the count is 0, the terminal performs the last set of feedback through the port and the beam, indicating the multiple ports. The transmission beam training for the terminal is completed.

In step 303, the terminal presets an SNR value, and when each port receives the SNR value corresponding to the transmit port and the beam combination sent by the base station side, which is greater than or equal to the preset SNR value (that is, the third specified condition is met), The transmitting port and beam combination meet the requirements, and the terminal can combine the transmitting port and the beam. Feedback to the base station. The terminal may also set a time window for receiving the transmit port and beam combination information sent in the current beam training of all the transmit ports.

The beam training can have a combination of N _t transmit ports and beams, and the terminal selects a combination that meets the requirements from the combination of the N _t transmit ports and beams, for a total of n _t ,

among them

A set of optimal transmit ports and beam combinations corresponding to each port sent by the current base station beam training selected by the port with feedback content on the terminal side. When the feedback is completed, the "take intersection" operation is completed, and the process of taking the intersection operation is similar to that of the first embodiment.

In step 304, the base station performs transmit beam training until the count is 0, and all transmit ports and beam combinations transmitted at the moment have been received by all the beams of all ports of the terminal, which may indicate that the beam training of all the transmit ports of the base station is completed. A total of M _t feedbacks are performed on the terminal side, and all combinations are recorded as

Where n _t1 represents the set of the first feedback of the receiving end.

In step 305, the base station receives the transmit port and beam information fed back by the terminal, and performs re-allocation of the transmit port and the beam combination according to the currently available port resources, that is, feedback from the terminal.

Some of the available transmit ports and beam combinations are selected in the combination.

In general, the result of the combination is more than that of the first embodiment, because the feedback signal sent by the base station at the beginning of the beam training can be used to know that the resources available to the base station are more than the threshold, and then the information is notified to the terminal. The subsequent operations are similar to the operations in steps 106-108 in the first embodiment, and can be understood by referring to the operations in steps 106-108.

Embodiment 4

As shown in FIG. 7 , this embodiment introduces that when the base station side is different from the first, second, and third embodiments, each port and beam in the base station does not occupy the full bandwidth and occupies a small sub-band, and may be encountered according to the terminal feedback. In this embodiment, the optimal port and beam combination feedback method introduced in this embodiment is used. The process shown in FIG. 8 may include steps 401 to 405.

In step 401, after the base station completes synchronization with the terminal, performing beam capability interaction, the base station informs the terminal base station of the port and beam transmission and reception capabilities, and the terminal informs the base station terminal of the port and beam transmission and reception capabilities. Since the entire bandwidth of the base station is divided into multiple sub-bands, it is necessary to perform beam training on the required sub-bands during beam training, wherein the sub-band information can be reflected in the beam capability interaction.

For a terminal that needs to perform beam training, the base station sends a signaling to the terminal in the beam capability interaction or in the start frame of the beam training, informing the terminal that all ports need to perform optimal transmit port and beam combination feedback, and send signaling. According to the moment, the base station can provide a data transmission port number and other resources for the terminal that needs to perform data transmission for the new access is less than the threshold;

In step 402, exemplarily, there are P subbands in the full bandwidth, each subband according to the N _t port, each port corresponding to the radio frequency end M _t beams, and the port and the beam carrying the subband in each training frame Number information and the number of times the beam training is required.

According to FIG. 5, each sub-band on the base station side has N _t ports, each port corresponding to the radio frequency end can generate M _t beams, and the terminal side has N _r ports, and each port has M _r beams. The number of beams corresponding to each port may be the same or different. For example, each port corresponds to the same number of beams. When the number of RF end beams corresponding to each port is different, each of the transmissions is performed when the base station performs beam training in the following step. The method of port counting is similar.

When the base station performs beam training, it is different from the counting method of the first embodiment. In this embodiment, each transmitting port of each sub-band on the base station side is separately counted, that is, each port of each sub-band is counted as M _t ×M _r . The number of times the transmitting port and the beam combination sent by the base station through each port of each sub-band is traversed to all the beams of all the ports of the terminal. When the number of beams of each port of the terminal is the same, each transmitting port of the base station needs to perform beam training. The number of times can be recorded as M _t ×M _r . Each training reduces the count by one. When the count is 0, it indicates that the transmit beam training of the transmit port for all port receiving beams of the terminal is completed, and all ports of the terminal can be triggered to start feedback.

In step 403, the terminal receives the transmit port and beam combination transmitted by the base station side through the transmit port of each sub-band through the beam of each port. The terminal calculates the SNR value corresponding to the received multiple data, and selects an optimal transmit port and beam combination corresponding to each transmit port of the base station that meets the requirement according to the SNR value maximization principle and the first specified condition. The setting of the preset SNR value on the terminal side should ensure that the error rate is not less than the threshold when data transmission is performed, and the setting can be set according to the demand characteristics of the terminal itself.

The terminal receives all the transmit port and beam combination information sent by the base station side through the transmit port of each sub-band through the beam of each port, and selects the transmit port that meets all the required sub-bands according to the SNR value maximization principle and the first specified condition. A total of n _t sets of beam groups, where n _{t ≤} N _t , indicates that each sub-band on the base station side selects corresponding transmit ports n _t and M _t beams corresponding to each transmit port, and then transmits from n _t The port and beam combination determines the transmit port and beam combination with the largest SNR value as the optimal transmit port and beam combination.

In step 404, the terminal side may not use all the ports for feedback and data transmission due to the limitation of the received SNR value. Thus the N _r n _r Suppose ports eligible port, transmit port number for each subband n _r is chosen by the base station to the port side and the beam combiner are

However, due to the existence of the sub-bands, the content that the terminal needs to feedback is still multiplied. If each sub-band is selected by the port side, the optimal transmit port and beam combination are the same or different. If the information is not large, the sub-band information can be combined and fed back. The information of the P sub-bands that need to be fed back is reduced to p, and p ≤ P is satisfied, so that the feedback amount of the terminal can be reduced.

The intersection operation is performed for the result selected by each port of the terminal. The operation may be performed by the terminal to analyze the optimal transmit port and beam combination of the selected base station on each port. When the optimal transmit port and beam combination of the selected base station of the terminal are the same, the same selection result is combined. Multiple feedback is not performed using multiple terminal ports.

After the intersection operation is performed, the terminal performs feedback through multiple ports that meet the requirements. The content of the feedback is the optimal beam corresponding to each port on the base station side that is selected by each port of the terminal according to the preset SNR value, compared to before the intersection is taken. The number of combinations, the content of the feedback is reduced to

among them,

Thereby the overhead can be reduced.

In step 405, the base station receives the feedback from the terminal.

The base station's transmit port and beam combination, according to the currently available sub-band and port resources, sub-band, transmit port and beam redistribution, that is, feedback from the terminal

Select some available sub-bands, ports and beams in the combination, the number of combinations is

among them,

Since the result of the base station reselection may be due to the fact that there are many terminals training at the same time, and the transmission port and beam combination fed back by some terminals cannot be allocated to the terminal, the reassignment combination needs to be satisfied.

The subsequent operations are similar to the operations in steps 106-108 in the first embodiment, and can be understood by referring to the operations in steps 106-108.

FIG. 9 is a schematic diagram of a base station according to the embodiment. As shown in FIG. 9, the base station in this embodiment may include a beam training module and an allocation module.

The beam training module is configured to perform hybrid beamforming. When performing beam training, all the transmitting port and beam combination information is sent to the terminal, and signaling for triggering the feedback mode is sent to the terminal according to the current available port resource status of the base station.

And an allocation module, configured to re-allocate the transmit port and the beam combination according to the currently available port resource status of the base station and the transmit port and beam combination information of the base station fed back by each port of the terminal, and transmit the retransmitted base station transmit port And beam combination information is fed back to the terminal.

Optionally, the beam training module is configured to send a one-digit binary identifier signaling, and when the binary number identifier is 0, a single selected transmit port and beam combination corresponding to each transmit port fed back by the receiving terminal. When the binary number identifier is 1, receiving a plurality of selected transmit ports and beam combinations corresponding to each transmit port fed back by the terminal; or when the binary number is 0, receiving each transmit port fed back by the terminal Corresponding multiple selected transmit port and beam combination feedback. When the binary number is 1, the single selected transmit port and beam combination corresponding to each transmit port fed back by the receiving terminal is reversed. Or feeding, or the beam training module, configured to transmit signaling including the number of ports currently available to the base station.

The beam training module may be further configured to: after the terminal completes synchronization, send a signaling for triggering the feedback mode to the terminal when performing beam information interaction with the terminal; or After the terminal completes the synchronization, when the start frame of the beam training is sent, a signaling for triggering the feedback mode is sent to the terminal.

Optionally, the beam training module is configured to separately record the number of times that each port performs beam training, and the number of times that each port performs beam training is a beam shape of a radio frequency beam that needs to perform radio frequency beam training on the transmitting port. The number of radio frequency beam training corresponding to the transmitting port of the base station is counted down by one. When the count is 0, it indicates that the transmitting beam training of the transmitting port of the base station is completed.

In an optional embodiment, the base station may further include a precoding module.

a precoding module, configured to: after the allocation module retransmits the transmit port and the beam combination information, to the terminal, the information fed back by each port of the terminal and the allocation module are re-ported for each port of the terminal. The allocated transmit port and beam combination, when performing precoding, send the same data for each port of the terminal, or send different data for each port of the terminal according to different port information of the terminal.

FIG. 10 is a schematic diagram of a transmission device for implementing millimeter wave communication according to the embodiment. The transmission device of this embodiment is disposed at each port of the terminal, and includes a receiving module, a selection module, and a feedback module.

The receiving module is configured to receive the transmit port and beam combination information generated by the base station hybrid beamforming.

The selecting module is configured to calculate a plurality of SINR values or SNR values according to the received transmit port and the beam combination sent by the base station, and select a transmit port and a beam combination corresponding to each transmit port on the base station side to be fed back.

The feedback module is configured to feed back, to the base station, the selected transmit port and beam combination corresponding to each port according to the signaling of the trigger feedback manner sent by the base station.

In an optional embodiment, the feedback module is configured to: when receiving the signaling sent by the base station, indicating that the optimal transmit port and beam combination feedback are adopted, according to the received multiple sent by the base station Transmitting port and beam combination, calculating multiple SINR values or SNR values, and cooperating with the transmitting port and beam group corresponding to the SINR value or SNR value that is the largest among the multiple SINR values or SNR values and satisfying the first specified condition For the optimal transmit port and beam combination corresponding to each transmit port, when all the counts of all the port transmission information of the base station are received, the transmit port and the beam combination corresponding to each transmit port are fed back to the base station.

In an optional embodiment, the feedback module is configured to: when receiving the signaling sent by the base station, indicating that multiple transmit ports and beam combination feedback are used, and feeding back multiple selected transmissions according to the signaling The port and beam combination is fed back to the base station.

Optionally, the feedback module is configured to: after the base station sends all the transmit ports and beam combinations through all the ports, calculate, according to the received all the transmit port and beam combination information of the base station, each transmit of the base station side A plurality of SINR values or SNR values corresponding to the port, and transmitting, by using a plurality of SINR values or SNR values corresponding to the second specified condition, a plurality of preferred transmit ports and beam combinations corresponding to each of the transmit ports to the base station Or, when the base station transmits the transmit port and the beam combination to the terminal through the port currently performing beam training, calculating multiple SINR values or SNR values according to the received transmit port and beam combination information, which will satisfy the third designation. A plurality of transmit port and beam combinations corresponding to a plurality of SINR values or SNR values of the condition are fed back to the base station as a plurality of preferred transmit port and beam combination information corresponding to each transmit port until beam training is completed.

The SINR or SNR values preset by the terminal side in the first specified condition, the second specified condition, and the third specified condition may be the same or different. In this embodiment, the terminal can be flexibly set according to its own needs. .

FIG. 11 is a schematic structural diagram of a hardware structure of a base station according to the embodiment. As shown in FIG. 11, the base station may include:

A processor 510 and a memory 520; may further include a communication interface 530 and a bus 540.

The processor 510, the memory 520, and the communication interface 530 can complete communication with each other through the bus 540. Communication interface 530 can be used for information transfer. The processor 510 can call the logic instructions in the memory 520 to perform the transmission method of the millimeter wave communication applied to the base station side by the above embodiment.

In addition, the logic instructions in the memory 520 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the embodiment may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or The network device or the like) performs all or part of the steps of the method described in this embodiment. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A medium that can store program code, or a transitory storage medium.

FIG. 12 is a schematic structural diagram of hardware of a terminal according to the embodiment. As shown in FIG. 12, the terminal may be configured. include:

A processor 610 and a memory 620; may further include a communication interface 630 and a bus 640.

The processor 610, the memory 620, and the communication interface 630 can complete communication with each other through the bus 640. Communication interface 630 can be used for information transmission. The processor 610 can call the logic instructions in the memory 620 to perform the transmission method of the millimeter wave communication applied to the terminal side by the above embodiment.

In addition, the logic instructions in the memory 620 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the embodiment may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or The network device or the like) performs all or part of the steps of the method described in this embodiment. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A medium that can store program code, or a transitory storage medium.

Finally, it should be understood that those skilled in the art can understand that all or part of the process of implementing the above embodiments can be completed by executing related hardware by a computer program, and the program can be stored in a computer readable storage medium. The program, when executed, may include the flow of an embodiment of the method as described above, wherein the computer readable storage medium may be a non-transitory computer readable storage medium such as a magnetic disk, an optical disk, or a read only memory ( ROM) or random access memory (RAM), etc.

One of ordinary skill in the art will appreciate that all or a portion of the steps described above can be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, the modules or units in the foregoing embodiments may be implemented in the form of hardware or in the form of software functional modules. The present disclosure is not limited to any specific form of combination of hardware and software.

Industrial applicability

The present disclosure provides a transmission method, a base station, and a terminal for implementing millimeter wave communication, which can solve the impact coverage and clustering clustering phenomenon that may occur in LTE and IEEE 802.11ad technologies.

Claims

A transmission method for realizing millimeter wave communication, comprising:

The base station performs hybrid beamforming, and performs beam training to transmit all the transmission port and beam combination information to the terminal, and sends a message for triggering the feedback mode to the terminal according to the current available port resource status of the base station;

The base station reassigns the transmit port and the beam combination according to the currently available port resource of the base station and the transmit port and beam combination information of the base station fed back by the terminal port, and feeds back the retransmitted transmit port and beam combination information to The terminal.
The method of claim 1 wherein

The letter includes a binary number identifier;

When the binary number is 0, the receiving terminal feeds back a single selected transmitting port and beam combination corresponding to each transmitting port on the base station side. When the binary number identifier is 1, each transmitting side of the base station side fed back by the receiving terminal a plurality of selected transmit ports and beam combinations corresponding to the port; or when the binary number is 0, the receiving terminal feeds back a plurality of selected transmit ports and beam combinations corresponding to each transmit port on the base station side, when the binary When the number is 1, the single selected transmit port and beam combination corresponding to each transmit port on the base station side fed back by the receiving terminal is received.
The method of claim 2, wherein

a single selected transmit port and beam combination corresponding to each transmit port on the base station side is a single transmit port and beam combination with the largest SINR value or SNR value and satisfying the first specified condition;

The plurality of selected transmit ports and beam combinations corresponding to each transmit port on the base station side are multiple transmit ports and beam combinations whose SINR value or SNR value satisfies the second specified condition.
The method of claim 1 wherein

The message includes the number of transmit ports currently available to the base station.
A method according to any one of claims 1 to 4, wherein

After performing the synchronization with the terminal, the base station sends a message to the terminal for triggering the feedback mode when the terminal performs beam information interaction with the terminal; or

The base station sends a message for triggering the feedback mode to the terminal in the start frame of the transmit beam training after the synchronization with the terminal is completed.
The method according to claim 1, further comprising: the base station separately recording the number of beam training times of each transmitting port, and the number of times of beam training performed by each transmitting port is a radio frequency beam shaping of the transmitting port that needs to perform radio frequency beam training. Number of beams;

When the radio frequency beam training corresponding to the transmitting port of the base station is performed once, the counting is decremented by 1. When the counting is 0, the transmission beam training of the transmitting port of the base station is completed.
The method of any of claims 1-4 and 6, further comprising:

After the base station feeds back the retransmitted transmit port and beam combination information to the terminal, according to the information fed back by each port of the terminal and the transmit port and beam combination information re-allocated for each port of the terminal, When the base station performs precoding, the same data is sent for each port of the terminal, or different data is sent for each port of the terminal according to different port information of the terminal.
A base station comprising:

The beam training module is configured to perform hybrid beamforming, and when performing beam training, send all the transmission port and beam combination information to the terminal, and send a message for triggering the feedback mode to the terminal according to the currently available port resource status of the base station; as well as

And an allocation module, configured to re-allocate the transmit port and the beam combination according to the currently available port resource status of the base station and the transmit port and beam combination information of the base station fed back by the terminal port, and re-allocate the transmit port and beam combination information Feedback to the terminal.
A base station according to claim 8, wherein

The beam training module is configured to send a binary number identification information, when the binary number identifier is 0, the receiving terminal feeds back a single selected transmission port and beam combination corresponding to each transmitting port on the base station side, when the binary When the number is 1, the receiving terminal feeds back a plurality of selected transmitting ports and beam combinations corresponding to each transmitting port on the base station side; or when the binary number is 0, the transmitting terminal corresponds to each transmitting port on the base station side. Multiple selected transmit ports and beam combinations, when the binary number is identified as 1, a single selected transmit port and beam combination corresponding to each transmit port on the base station side fed back by the receiving terminal; or

The beam training module is configured to transmit a message including a number of ports currently available to the base station.
A base station according to claim 9, wherein

a single selected transmit port and beam combination corresponding to each transmit port on the base station side is a single transmit port and beam combination with the largest SINR value or SNR value and satisfying the first specified condition;

The plurality of selected transmit ports and beam combinations corresponding to each transmit port on the base station side are multiple transmit ports and beam combinations whose SINR value or SNR value satisfies the second specified condition.
A base station according to any one of claims 8 to 10, wherein

The beam training module is configured to send a message for triggering the feedback mode to the terminal when the terminal performs beam information interaction after the terminal completes synchronization; or after synchronization with the terminal, In the start frame of the transmit beam training, a message for triggering the feedback mode is transmitted to the terminal.
A base station according to claim 8, wherein

The beam training module is configured to separately record the number of times that each of the transmitting ports performs beam training, and the number of times that each of the transmitting ports performs beam training is that the transmitting port needs to perform radio beam training. The number of beams shaped by the frequency beam; if the radio frequency beam corresponding to the transmitting port of the base station is trained once, the count is decremented by 1. When the count is 0, the transmission beam training of the transmitting port of the base station is completed.
The base station according to any one of claims 8-10 and 12, further comprising:

a precoding module, configured to: after the allocation module retransmits the transmit port and the beam combination information, to the terminal, the information fed back by each port of the terminal and the allocation module are re-ported for each port of the terminal. The allocated transmit port and beam combination information, when precoding, send the same data for each port of the terminal, or send different data for each port of the terminal according to different port information of the terminal.
A transmission method for realizing millimeter wave communication, comprising:

The terminal receives all the transmit port and beam combination information generated by the base station hybrid beamforming through each port;

The terminal calculates a plurality of signal and interference plus noise ratio SINR values or signal to noise ratio SNR values according to all received transmit port and beam combinations, and selects a transmit port and a beam corresponding to each transmit port on the base station side to be fed back. Combination;

According to the information of the trigger feedback mode sent by the base station, the terminal feeds back to the base station the selected transmit port and beam combination corresponding to each transmit port.
The method of claim 14 wherein

When the terminal receives, by each port, the information sent by the base station indicates that the single transmit port and the beam combination feedback are used, the terminal feeds back the selected transmit port and beam combination corresponding to each port to the base station, including:

And calculating, according to the received multiple transmit port and beam combination information sent by the base station, a plurality of SINR values or SNR values, where the terminal is the transmit port corresponding to the SINR value or the SNR value that meets the first specified condition and The beam combination is fed back to the base station as a single selected transmit port and beam combination for each transmit port.
The method of claim 15 further comprising:

When all the counts of all the port transmission information of the base station are received, the terminal feeds back to the base station through each port a single selected transmit port and beam combination corresponding to each transmit port.
The method of claim 14 wherein

When the terminal receives, by each port, the information sent by the base station indicates that multiple transmit ports and beam combination feedback are used, the terminal sends back the selected transmit port and beam combination to: according to the information, the selection will be more The selected transmit ports and beam combinations are fed back to the base station.
The method of claim 17, wherein the terminal selectively feeds back a plurality of selected transmit ports and beam combinations to the base station according to the message, comprising:

After the base station sends all the transmit ports and the beam combination, the multiple SINR values or SNR values are calculated according to the received multiple transmit port and beam combination information sent by the base station through each transmit port, where the terminal Multiple transmit ports and beam combinations corresponding to multiple SINR values or SNR values satisfying the second specified condition are fed back to the base station as a plurality of selected transmit ports and beam combinations; or

When the base station sends multiple transmit ports and beam combinations to the terminal through the transmit port currently performing beam training, calculating multiple SINR values or SNR values according to the received multiple transmit port and beam combination information, which will satisfy the The plurality of transmit ports and beam combinations corresponding to the multiple SINR values or SNR values of the three specified conditions are fed back to the base station as a plurality of selected transmit ports and beam combinations corresponding to the transmit port currently performing beam training until the beam training is completed.
A method according to claim 17 or 18, wherein

The terminal combines the same transmit port and beam combination of the base station fed back by different ports of the terminal, and only feeds back once.
A transmission device for realizing millimeter wave communication, which is disposed in the terminal, and includes:

a receiving module, configured to receive all transmit port and beam combination information generated by the base station hybrid beamforming;

The selecting module is configured to calculate, according to all the received transmit port and beam combination information, a plurality of signal to interference plus noise ratio SINR values or signal to noise ratio SNR values, and select a corresponding transmit end of each transmit port on the base station side to be fed back Port and beam combination information; and,

The feedback module is configured to feed back, according to the trigger feedback mode sent by the base station, a selected transmit port and a beam combination corresponding to each port to the base station.
The device of claim 20, wherein

The feedback module is configured to: when receiving the signal sent by the base station, indicating that the single transmit port and the beam combination feedback are used, calculate, according to the received multiple transmit port and beam combination information sent by the base station, SINR value or SNR value, the transmit port and beam combination corresponding to the SINR value or the SNR value that meets the first specified condition as the single selected transmit port and beam combination corresponding to each transmit port, when the base station is received When all the transmission port transmission information counts to 0, the base station feeds back a single selected transmission port and beam combination corresponding to each transmission port on the base station side.
The device of claim 20, wherein

The feedback module is configured to: when receiving the information sent by the base station indicating that multiple transmit ports and beam combination feedback are used, according to the information, multiple selected transmit ports corresponding to each transmit port on the base station side And the beam combination is fed back to the base station.
The device of claim 22, wherein

The feedback module is configured to send all transmit ports and waves through the all base stations at the base station After the combination of the bundles, the plurality of SINR values or SNR values corresponding to each port on the base station side are calculated according to the received information of all the transmit port and the beam combination information of the base station, and multiple SINR values corresponding to each port on the base station side or Transmitting port and beam combination corresponding to multiple SINR values or SNR values satisfying the second specified condition in the SNR value are fed back to the base station as a plurality of selected transmitting ports and beam combinations corresponding to each transmitting port; or

When the base station sends multiple transmit ports and beam combinations to the terminal through the transmit port currently performing beam training, calculating multiple SINR values or SNR values according to the received multiple transmit port and beam combination information, which will satisfy the The plurality of transmit ports and beam combinations corresponding to the multiple SINR values or SNR values of the three specified conditions are fed back to the base station as a plurality of selected transmit ports and beam combinations corresponding to the transmit port currently performing beam training until the beam training is completed.
A non-transitory computer readable storage medium storing computer executable instructions for performing a millimeter wave communication transmission method according to any one of claims 1-7, 14-19 .