CN107689821A - A kind of method and device of beamforming vectors adjustment - Google Patents
A kind of method and device of beamforming vectors adjustment Download PDFInfo
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- CN107689821A CN107689821A CN201610635668.2A CN201610635668A CN107689821A CN 107689821 A CN107689821 A CN 107689821A CN 201610635668 A CN201610635668 A CN 201610635668A CN 107689821 A CN107689821 A CN 107689821A
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- beamforming vectors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
Abstract
The invention discloses a kind of method and device of beamforming vectors adjustment.This method includes：If base station and mobile terminal complete wave beam training, and the mobile terminal carries out the transmission of upstream data or when the mobile terminal carries out the reception of downlink data, then detects whether to need to be compensated according to predesigned compensation algorithm at interval of predetermined period；If so, then the mobile terminal measures the angle change in the predetermined period；If the angle change is more than threshold value, wave beam forming compensated information is then obtained according to the backoff algorithm, and Beamforming vectors are obtained according to the wave beam forming compensated information, and data transmission is carried out according to the Beamforming vectors or carries out data receiver, so as to realize in beam direction caused by the sudden rotations of UE and base station mismatch, can actively solve direction mismatch, rapidly recover link-quality, the time delay that it is introduced is small, link-quality is higher.
Description
Technical field
The present embodiments relate to the technical field of communication, more particularly to a kind of method of beamforming vectors adjustment
And device.
Background technology
High band (maximum more than 100GHz) data transfer is a target of 5G standardization, it is well known that high band
Signal fadeout is a key issue to be overcome.One of which thinking is increased by the aerial array of base station end and mobile terminal
Benefit compensates.Traditional cellular network only has base station in and carries out the acquisition gain of array figuration, anti-using the closed loop of mobile terminal
Feed traveling wave beam adjusts.Introduce the array figuration of mobile terminal, it is desirable to which the array figuration of base station has to the tax with mobile terminal
Shape is preferably alignd, and could obtain preferable effect, and less deviation can also make signal by greater loss.
Therefore beam is needed to track, track algorithm is normally based on receiving terminal feedback to do at present, the time delay so brought
Larger, possible feedack is incorrect when in use.Such a algorithm performance in current downlink system is relative
Preferably, because descending optimal sending direction is relatively stable, even if there is relative change UE positions, usually can ensure in base station
Within wave cover.But if in up-link, UE configures more transmission antennas, using with descending similar wave beam forming
It is transmitted, then the factors such as UE is mobile, rotates, blocks occurs, causes the beam angle of transmission and selected optimal beam
Angle has larger deviation, the wave beam of sending and receiving end is no longer alignd, so as to cause the signal quality of receiving terminal poor, in order to again
Sending and receiving end wave beam matching is carried out, it is necessary to which longer beam search tracks process, and will endure excessively poor chain among this process
Road performance.
The content of the invention
The purpose of the embodiment of the present invention is to propose a kind of method and device of beamforming vectors adjustment, it is intended to solves
Certainly when beam direction caused by the sudden rotations of UE and base station mismatch how beamforming vector adjustment directions the problem of.
To use following technical scheme up to this purpose, the embodiment of the present invention：
In a first aspect, a kind of method of beamforming vectors adjustment, methods described include：
If base station and mobile terminal complete wave beam training, and the mobile terminal carries out the transmission or described of upstream data
When mobile terminal carries out the reception of downlink data, then the mobile terminal detects whether to need according to default at interval of predetermined period
Backoff algorithm compensates, and it is beamforming vector compensations that the backoff algorithm, which is used for,；
If detection needs to be compensated according to the preset algorithm, the mobile terminal measurement is in the predetermined period
Angle change
The mobile terminal judges the angle changeWhether threshold value is more than
If the angle changeMore than threshold valueThen the mobile terminal is according to the backoff algorithm
Wave beam forming compensated information is obtained, and Beamforming vectors are obtained according to the wave beam forming compensated information；
The mobile terminal carries out data transmission according to the Beamforming vectors or carries out data receiver.
Preferably, methods described also includes：
If the angle changeNo more than the threshold valueThen the mobile terminal directly uses
The CSI of the mobile terminal feedback or the CSI for estimating to obtain by channel obtain Beamforming vectors.
Preferably, the mobile terminal directly obtains Beamforming vectors using the CSI of mobile terminal feedback,
Including：
CSI that the mobile terminal feeds back according to the mobile terminal or CSI for estimating to obtain by channel, is carried outThe calculating of orientation angle, wherein, D () is angle calculation function；
The mobile terminal by the orientation angle calculate after offset angle beAnd according to
The offset angle obtains Beamforming vectors.
Preferably, the mobile terminal obtains Beamforming vectors according to the offset angle, including：
The mobile terminal passes through described in default Beamforming vector formulas and offset angle acquisition
Beamforming vectors；Wherein, the default Beamforming vector formulas is：
Wherein, NVFor line number, NHFor columns, dVFor antennas orthogonal spacing, dHFor antenna level interval.
Second aspect, a kind of device of beamforming vectors adjustment, described device include：
Detection module, if wave beam training is completed for base station and mobile terminal, and the mobile terminal carries out upstream data
Transmission or mobile terminal when carrying out the reception of downlink data, then detect whether to need according to pre- at interval of predetermined period
If backoff algorithm compensates, it is beamforming vector compensations that the backoff algorithm, which is used for,；
Measurement module, if needing to be compensated according to the preset algorithm for detecting, measure in the predetermined period
Interior angle change
Judge module, for judging the angle changeWhether threshold value is more than
Compensation calculation module, if for the angle changeMore than threshold valueThen according to the benefit
Repay algorithm and obtain wave beam forming compensated information, Beamforming vectors are obtained according to the wave beam forming compensated information；
Processing module, for carrying out data transmission according to the Beamforming vectors or carrying out data receiver.
Preferably, described device also includes：
Acquisition module, if for the angle changeNo more than the threshold valueThen directly use
The CSI of the mobile terminal feedback or the CSI for estimating to obtain by channel obtain Beamforming vectors.
Preferably, the acquisition module, is specifically used for：
The CSI fed back according to the mobile terminal the or CSI for estimating to obtain by channel, is carried outThe calculating of orientation angle, wherein, D () is angle calculation function；
It is by the offset angle after orientation angle calculatingAnd according to the offset angle
Obtain Beamforming vectors.
Preferably, the acquisition module, is additionally operable to：
The Beamforming vectors are obtained by default Beamforming vector formulas and the offset angle；Its
In, the default Beamforming vector formulas is：
Wherein, NVFor line number, NHFor columns, dVFor antennas orthogonal spacing, dHFor antenna level interval.
The third aspect, a kind of device of beamforming vectors adjustment, described device include：
Angular Sensor modules, inputted for measuring the anglec of rotation of mobile terminal, and by the angle information measured
To Beamforming modules；
The Beamforming modules, wave beam forming compensated information is calculated according to predesigned compensation algorithm for receiving, and led to
Cross the number of CSI that wave beam forming compensated information and Feedback/estimated the CSI generation modules are calculated to input
According to progress beamforming；
The Feedback/estimated CSI generation modules, for obtain mobile terminal feedback CSI or
The CSI for estimating to obtain by channel, and CSI that the mobile terminal feeds back or the CSI for estimating to obtain by channel are inputted
The Beamforming modules.
Preferably, described device also includes：Clock module；
The clock module connects the Angular Sensor modules and the Feedback/estimated respectively
CSI generation modules.
The embodiment of the present invention provides a kind of method and device of beamforming vectors adjustment, if base station and mobile terminal
Wave beam training is completed, and the mobile terminal carries out the transmission of upstream data or the mobile terminal carries out connecing for downlink data
Time receiving, then the mobile terminal detect whether to need to be compensated according to predesigned compensation algorithm at interval of predetermined period；Detection needs
To be compensated according to the preset algorithm, then the mobile terminal measures the angle change in the predetermined periodThe mobile terminal judges the angle changeWhether threshold value is more thanIf the angle
ChangeMore than threshold valueThen the mobile terminal obtains wave beam forming compensation according to the backoff algorithm
Information, and Beamforming vectors are obtained according to the wave beam forming compensated information；The mobile terminal is according to
Beamforming vectors carry out data transmission or carry out data receiver, so as to realize the wave beam caused by the sudden rotations of UE
When direction is with base station mismatch, can actively solve direction mismatch, can rapidly recover link-quality, relative to former wave beam
The mode searched for again, the time delay that it is introduced is much smaller, so that link-quality has higher reliability.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the method for beamforming vectors adjustment provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the method for another beamforming vectors adjustment provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of typical 2D aerial arrays of the prior art；
Fig. 4 is a kind of high-level schematic functional block diagram of the device of beamforming vectors adjustment provided in an embodiment of the present invention；
Fig. 5 is the functional module signal of the device of another beamforming vectors adjustment provided in an embodiment of the present invention
Figure；
Fig. 6 is the functional module signal of the device of another beamforming vectors adjustment provided in an embodiment of the present invention
Figure；
Fig. 7 is the functional module signal of the device of another beamforming vectors adjustment provided in an embodiment of the present invention
Figure.
Embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this
The specific embodiment of place description is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.In addition also
It should be noted that for the ease of describing, the part related to the embodiment of the present invention rather than entire infrastructure are illustrate only in accompanying drawing.
With reference to figure 1, Fig. 1 is that a kind of flow of the method for beamforming vectors adjustment provided in an embodiment of the present invention is shown
It is intended to.
As shown in figure 1, the method for wave beam forming (beamforming) the vector adjustment includes：
Step 101, if base station and mobile terminal complete wave beam training, and the mobile terminal carries out the transmission of upstream data
Or the mobile terminal when carrying out the reception of downlink data, then the mobile terminal detects whether to need at interval of predetermined period
Compensated according to predesigned compensation algorithm, it is beamforming vector compensations that the backoff algorithm, which is used for,；
Step 102, if detection needs to be compensated according to the preset algorithm, the mobile terminal measurement is described pre-
If the angle change in the cycle
Step 103, the mobile terminal judges the angle changeWhether threshold value is more than
Step 104, if the angle changeMore than threshold valueThen the mobile terminal is according to institute
State backoff algorithm and obtain wave beam forming compensated information, and Beamforming vectors are obtained according to the wave beam forming compensated information；
Step 105, the mobile terminal carries out data transmission or carries out data to connect according to the Beamforming vectors
Receive.
The embodiment of the present invention provides a kind of method of beamforming vectors adjustment, if base station and mobile terminal complete ripple
Shu Xunlian, and the mobile terminal carry out upstream data transmission or the mobile terminal carry out downlink data reception when,
Then the mobile terminal detects whether to need to be compensated according to predesigned compensation algorithm at interval of predetermined period；Detection needs basis
The preset algorithm compensates, then the mobile terminal measures the angle change in the predetermined periodInstitute
State mobile terminal and judge the angle changeWhether threshold value is more thanIf the angle changeMore than threshold valueThen the mobile terminal obtains wave beam forming compensated information according to the backoff algorithm,
And Beamforming vectors are obtained according to the wave beam forming compensated information；The mobile terminal is according to the Beamforming
Vector carries out data transmission or carries out data receiver, so as to realize that the beam direction caused by the sudden rotations of UE loses with base station
Timing, can actively solve direction mismatch, can rapidly recover link-quality, the side searched for again relative to former wave beam
Formula, the time delay that it is introduced is much smaller, so that link-quality has higher reliability.
With reference to figure 2, Fig. 2 is the flow of the method for another beamforming vectors adjustment provided in an embodiment of the present invention
Schematic diagram.
As shown in Fig. 2 the method for the beamforming vectors adjustment includes：
Step 201, if base station and mobile terminal complete wave beam training, and the mobile terminal carries out the transmission of upstream data
Or the mobile terminal when carrying out the reception of downlink data, then the mobile terminal detects whether to need at interval of predetermined period
Compensated according to predesigned compensation algorithm, it is beamforming vector compensations that the backoff algorithm, which is used for,；
Step 202, if detection needs to be compensated according to the preset algorithm, the mobile terminal measurement is described pre-
If the angle change in the cycle
Step 203, the mobile terminal judges the angle changeWhether threshold value is more than
Step 204, if the angle changeMore than threshold valueThen the mobile terminal is according to
Backoff algorithm obtains wave beam forming compensated information, and obtains Beamforming vectors according to the wave beam forming compensated information；
Step 205, if the angle changeNo more than the threshold valueThe then mobile terminal
Directly use the channel condition information (Channel state information, CSI) of mobile terminal feedback or pass through
The CSI that channel is estimated to obtain obtains Beamforming vectors；
Preferably, the mobile terminal directly obtains Beamforming vectors using the CSI of mobile terminal feedback,
Including：
CSI that the mobile terminal feeds back according to the mobile terminal or CSI for estimating to obtain by channel, is carried outThe calculating of orientation angle, wherein, D () is angle calculation function；
The mobile terminal by the orientation angle calculate after offset angle beAnd according to
The offset angle obtains Beamforming vectors.
Preferably, the mobile terminal obtains Beamforming vectors according to the offset angle, including：
The mobile terminal passes through described in default Beamforming vector formulas and offset angle acquisition
Beamforming vectors；Wherein, the default Beamforming vector formulas is：
Wherein, NVFor line number, NHFor columns, dVFor antennas orthogonal spacing, dHFor antenna level interval.
Specifically, such as Fig. 3 is typical 2D aerial arrays, aerial array NV×NH, wherein NVFor line number, NHFor columns,
dVFor antennas orthogonal spacing, dHFor antenna level interval：
The direction of alignment required for aerial arrayIt can be realized by adjusting its aerial array factor, it is specific as follows：
Step 206, the mobile terminal carries out data transmission or carries out data to connect according to the Beamforming vectors
Receive.
Specifically, the first situation is：When mobile terminal sends upstream data, it is assumed that in moment t0, BS and UE ends are completed
Wave beam training (optimal beam for finding sending and receiving end), and updated with cycle T, due to the rotation of UE angles within t0~t0+T times
Wave beam is mismatched and compensated by the following method caused by turning, it is assumed that t0<t1<t0+T：
Angular transducer (Angular Sensor) module is measured from moment t0 to moment t1 angle changeAnd
WillInput to Beamforming modules；
Judge in Beamforming modulesWhether threshold value is more thanIf it is greater, then mended
Calculating is repaid, Beamforming vectors are directly otherwise obtained using the CSI of feedback without compensation calculation, such as lower section can be used
Method is calculated：
The CSI that Beamforming modules obtain according to newest obtained feedback or estimation, the calculating of travel direction angleD () is angle calculation function；
Angle after compensation isAnd according to angle calculation Beamforming vectors
Mobile terminal carries out data transmission with the vector.
Specifically, second of situation is：When UE receives downlink data, compensated using similar method：
Angular Sensor modules are measured from moment t0 to moment t1 angle changeAnd will
Input to Beamforming modules (being used for the beamforming for receiving wave beam forming)
Judge in Beamforming modulesWhether threshold value is more thanIf it is greater, then mended
Calculating is repaid, Beamforming vectors are directly otherwise obtained using the CSI of feedback without compensation calculation, such as lower section can be used
Method is calculated：
The CSI that Beamforming modules obtain according to newest obtained feedback or estimation, the calculating of travel direction angleD () is angle calculation function
Angle after compensation isAnd according to angle calculation Beamforming vectors
Terminal carries out data receiver with the vector.
With reference to figure 4, Fig. 4 is a kind of function mould of the device of beamforming vectors adjustment provided in an embodiment of the present invention
Block schematic diagram.
As shown in figure 4, described device includes：
Detection module 401, if wave beam training is completed for base station and mobile terminal, and the mobile terminal carries out line number
According to transmission or the mobile terminal carry out downlink data reception when, then detect whether to need basis at interval of predetermined period
Predesigned compensation algorithm compensates, and it is beamforming vector compensations that the backoff algorithm, which is used for,；
Measurement module 402, if needing to be compensated according to the preset algorithm for detecting, measure in the default week
Angle change in phase
Judge module 403, for judging the angle changeWhether threshold value is more than
Compensation calculation module 404, if for the angle changeMore than threshold valueThen according to institute
State backoff algorithm and obtain wave beam forming compensated information, Beamforming vectors are obtained according to the wave beam forming compensated information；
Processing module 405, for carrying out data transmission according to the Beamforming vectors or carrying out data receiver.
Preferably, described device also includes：
Acquisition module, if for the angle changeNo more than the threshold valueThen directly use
The CSI of the mobile terminal feedback or the CSI for estimating to obtain by channel obtain Beamforming vectors.
Preferably, the acquisition module, is specifically used for：
The CSI fed back according to the mobile terminal the or CSI for estimating to obtain by channel, is carried outThe calculating of orientation angle, wherein, D () is angle calculation function；
It is by the offset angle after orientation angle calculatingAnd according to the offset angle
Obtain Beamforming vectors.
Preferably, the acquisition module, is additionally operable to：
The Beamforming vectors are obtained by default Beamforming vector formulas and the offset angle；Its
In, the default Beamforming vector formulas is：
Wherein, NVFor line number, NHFor columns, dVFor antennas orthogonal spacing, dHFor antenna level interval.
The embodiment of the present invention provides a kind of device of beamforming vectors adjustment, if base station and mobile terminal complete ripple
Shu Xunlian, and the mobile terminal carry out upstream data transmission or the mobile terminal carry out downlink data reception when,
Then the mobile terminal detects whether to need to be compensated according to predesigned compensation algorithm at interval of predetermined period；Detection needs basis
The preset algorithm compensates, then the mobile terminal measures the angle change in the predetermined periodInstitute
State mobile terminal and judge the angle changeWhether threshold value is more thanIf the angle changeMore than threshold valueThen the mobile terminal obtains wave beam forming compensated information according to the backoff algorithm,
And Beamforming vectors are obtained according to the wave beam forming compensated information；The mobile terminal is according to the Beamforming
Vector carries out data transmission or carries out data receiver, so as to realize that the beam direction caused by the sudden rotations of UE loses with base station
Timing, can actively solve direction mismatch, can rapidly recover link-quality, the side searched for again relative to former wave beam
Formula, the time delay that it is introduced is much smaller, so that link-quality has higher reliability.
With reference to figure 5, Fig. 5 is the function of the device of another beamforming vectors adjustment provided in an embodiment of the present invention
Module diagram.
As shown in figure 5, described device includes：
Angular Sensor modules 501, for measuring the anglec of rotation of mobile terminal, and the angle information measured is defeated
Enter to Beamforming modules 502；
The Beamforming modules 502, wave beam forming compensated information is calculated according to predesigned compensation algorithm for receiving,
And CSI pairs be calculated by the wave beam forming compensated information and Feedback/estimated CSI generation modules 503
The data of input carry out beamforming；Feedback refers to carry out estimation compensation using the feedback information received；
Estimated CSI refer to the measurement CSI information of active, it is not necessary to feed back；Meaning arranged side by side Feedback/estimated CSI
Think to refer to a kind of can in two kinds.
The Feedback/estimated CSI generation modules 503, for obtain mobile terminal feedback CSI or
The CSI that person estimates to obtain by channel, and CSI that the mobile terminal feeds back or the CSI for estimating to obtain by channel is defeated
Enter the Beamforming modules 502.
Preferably, described device also includes：Clock module 504；
The clock module (Timing) connects the Angular Sensor modules and the Feedback/ respectively
Estimated CSI generation modules.
Specifically, Fig. 6 is to be directed to the first above-mentioned situation, Fig. 7 is to be directed to second of situation.
The embodiment of the present invention provides a kind of device of beamforming vectors adjustment, if base station and mobile terminal complete ripple
Shu Xunlian, and the mobile terminal carry out upstream data transmission or the mobile terminal carry out downlink data reception when,
Then the mobile terminal detects whether to need to be compensated according to predesigned compensation algorithm at interval of predetermined period；Detection needs basis
The preset algorithm compensates, then the mobile terminal measures the angle change in the predetermined periodInstitute
State mobile terminal and judge the angle changeWhether threshold value is more thanIf the angle changeMore than threshold valueThen the mobile terminal obtains wave beam forming compensated information according to the backoff algorithm,
And Beamforming vectors are obtained according to the wave beam forming compensated information；The mobile terminal is according to the Beamforming
Vector carries out data transmission or carries out data receiver, so as to realize that the beam direction caused by the sudden rotations of UE loses with base station
Timing, can actively solve direction mismatch, can rapidly recover link-quality, the side searched for again relative to former wave beam
Formula, the time delay that it is introduced is much smaller, so that link-quality has higher reliability.
The technical principle of the embodiment of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain this
The principle of inventive embodiments, and the limitation to protection domain of the embodiment of the present invention can not be construed in any way.Based on herein
Explanation, those skilled in the art, which would not require any inventive effort, can associate the other specific of the embodiment of the present invention
Embodiment, these modes are fallen within the protection domain of the embodiment of the present invention.
Claims (10)
- A kind of 1. method of beamforming vectors adjustment, it is characterised in that methods described includes：If base station and mobile terminal complete wave beam training, and the mobile terminal carries out the transmission of upstream data or the movement When terminal carries out the reception of downlink data, then the mobile terminal detects whether to need according to predesigned compensation at interval of predetermined period Algorithm compensates, and it is beamforming vector compensations that the backoff algorithm, which is used for,；If detection needs to be compensated according to the preset algorithm, the mobile terminal measures the angle in the predetermined period Degree changeThe mobile terminal judges the angle changeWhether threshold value is more thanIf the angle changeMore than threshold valueThen the mobile terminal obtains according to the backoff algorithm Wave beam forming compensated information, and Beamforming vectors are obtained according to the wave beam forming compensated information；The mobile terminal carries out data transmission according to the Beamforming vectors or carries out data receiver.
- 2. according to the method for claim 1, it is characterised in that methods described also includes：If the angle changeNo more than the threshold valueThen the mobile terminal directly uses the shifting The CSI of dynamic terminal feedback or the CSI for estimating to obtain by channel obtain Beamforming vectors.
- 3. according to the method for claim 2, it is characterised in that the mobile terminal is directly fed back using the mobile terminal CSI obtain Beamforming vectors, including：CSI that the mobile terminal feeds back according to the mobile terminal or CSI for estimating to obtain by channel, is carried outThe calculating of orientation angle, wherein, D () is angle calculation function；The mobile terminal by the orientation angle calculate after offset angle beAnd according to described Offset angle obtains Beamforming vectors.
- 4. according to the method for claim 3, it is characterised in that the mobile terminal obtains according to the offset angle Beamforming vectors, including：The mobile terminal obtains the Beamforming by default Beamforming vector formulas and the offset angle Vector；Wherein, the default Beamforming vector formulas is：Wherein, NVFor line number, NHFor columns, dVFor antennas orthogonal spacing, dHFor antenna level interval.
- 5. a kind of device of beamforming vectors adjustment, it is characterised in that described device includes：Detection module, if wave beam training is completed for base station and mobile terminal, and the mobile terminal carries out the hair of upstream data Send or when the mobile terminal carries out the reception of downlink data, then detect whether to need to be mended according to default at interval of predetermined period Repay algorithm to compensate, it is beamforming vector compensations that the backoff algorithm, which is used for,；Measurement module, if needing to be compensated according to the preset algorithm for detecting, measure in the predetermined period Angle changeJudge module, for judging the angle changeWhether threshold value is more thanCompensation calculation module, if for the angle changeMore than threshold valueThen calculated according to the compensation Method obtains wave beam forming compensated information, and Beamforming vectors are obtained according to the wave beam forming compensated information；Processing module, for carrying out data transmission according to the Beamforming vectors or carrying out data receiver.
- 6. device according to claim 5, it is characterised in that described device also includes：Acquisition module, if for the angle changeNo more than the threshold valueDescribed in then directly using The CSI of mobile terminal feedback or the CSI for estimating to obtain by channel obtain Beamforming vectors.
- 7. device according to claim 6, it is characterised in that the acquisition module, be specifically used for：The CSI fed back according to the mobile terminal the or CSI for estimating to obtain by channel, is carried outSide Calculating to angle, wherein, D () is angle calculation function；It is by the offset angle after orientation angle calculatingAnd obtained according to the offset angle Beamforming vectors.
- 8. device according to claim 7, it is characterised in that the acquisition module, be additionally operable to：The Beamforming vectors are obtained by default Beamforming vector formulas and the offset angle；Wherein, institute Stating default Beamforming vector formulas is：Wherein, NVFor line number, NHFor columns, dVFor antennas orthogonal spacing, dHFor antenna level interval.
- 9. a kind of device of beamforming vectors adjustment, it is characterised in that described device includes：Angular Sensor modules, it is input to for measuring the anglec of rotation of mobile terminal, and by the angle information measured Beamforming modules；The Beamforming modules, wave beam forming compensated information is calculated according to predesigned compensation algorithm for receiving, and pass through institute The CSI that wave beam forming compensated information and Feedback/estimated CSI generation modules are calculated is stated to enter the data of input Row beamforming；The Feedback/estimated CSI generation modules, for obtaining the CSI of the mobile terminal feedback or passing through Channel estimates obtained CSI, and is estimated by CSI that the mobile terminal feeds back or by channel described in obtained CSI inputs Beamforming modules.
- 10. device according to claim 9, it is characterised in that described device also includes：Clock module；The clock module connects the Angular Sensor modules and Feedback/estimated CSI lifes respectively Into module.
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