CN110662160B - Beamforming method and apparatus, and computer-readable storage medium - Google Patents
Beamforming method and apparatus, and computer-readable storage medium Download PDFInfo
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- CN110662160B CN110662160B CN201810685049.3A CN201810685049A CN110662160B CN 110662160 B CN110662160 B CN 110662160B CN 201810685049 A CN201810685049 A CN 201810685049A CN 110662160 B CN110662160 B CN 110662160B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- Mobile Radio Communication Systems (AREA)
Abstract
The disclosure provides a method and a device for beamforming and a computer readable storage medium, and relates to the field of mobile communication. The method comprises the following steps: acquiring minimization drive test information measured by a terminal, wherein the minimization drive test information comprises first position information of the terminal; acquiring feedback information of a terminal, wherein the feedback information comprises arrival angle information or codebook information fed back by the terminal; determining second position information of the terminal according to the feedback information of the terminal; performing joint positioning on the terminal according to the first position information and the second position information of the terminal to determine third position information of the terminal; and carrying out beam forming according to the third position information of the terminal, so that the main beam points to the direction of the third position information of the terminal. According to the method and the device, the terminal is jointly positioned according to the terminal positioning information based on the minimization of drive test and the terminal positioning information based on the terminal feedback, the accuracy of terminal positioning is improved, the main beam of beam forming points to the direction of joint positioning of the terminal, and the beam forming effect is improved.
Description
Technical Field
The present disclosure relates to the field of mobile communications, and in particular, to a method and an apparatus for beamforming, and a computer-readable storage medium.
Background
Beam Forming (BF) is an implementation of an adaptive array smart antenna, and is a digital signal processing technique implemented on an antenna array composed of a plurality of array elements. The method utilizes the difference of the space channel characteristics of the useful signal and the interference signal such as the Arrival angle (DoA) and the like, and separates the useful signal and the interference signal in space by setting a proper weighted value for an antenna array, thereby realizing the purposes of enlarging the coverage area, improving the edge throughput and suppressing the interference.
The position of the terminal can be determined through the arrival angle fed back by the terminal, and then beam forming is performed according to the position information of the terminal, so that the main beam points to the direction of the position of the terminal.
Disclosure of Invention
The inventor finds that in a complex environment with rich multipath, the accuracy of terminal positioning is reduced, and the beamforming effect is poor.
In view of this, the present disclosure provides a beamforming scheme to improve beamforming effect.
According to an aspect of the present disclosure, a method for beamforming is provided, including:
acquiring minimization drive test information measured by a terminal, wherein the minimization drive test information comprises first position information of the terminal;
acquiring feedback information of the terminal, wherein the feedback information comprises arrival angle information or codebook information fed back by the terminal;
determining second position information of the terminal according to the feedback information of the terminal;
performing joint positioning on the terminal according to the first position information and the second position information of the terminal to determine third position information of the terminal;
and carrying out beam forming according to the third position information of the terminal, so that the main beam points to the direction of the third position information of the terminal.
Optionally, the determining the third location information of the terminal includes:
and performing weighted calculation on the first position information and the second position information of the terminal, wherein the calculation result is used as the third position information of the terminal.
Optionally, the determining the third location information of the terminal includes:
searching a matched record in a fingerprint database by using the first position information and the second position information of the terminal, and taking the actual position information of the terminal in the matched record as the third position information of the terminal;
wherein the records in the fingerprint repository include: the position information of the terminal is obtained through the minimization of drive test information, the position information of the terminal is determined through the terminal feedback information, and the corresponding actual position information of the terminal is obtained.
Optionally, the beamforming period is a preset fixed period, the minimization of drive test period, and any one of two periods determined according to the fixed period and the minimization of drive test period.
Alternatively, the measurement period of the minimization of drive test is configurable, and the range of the minimization of drive test can be configured as a whole network cell or a cell with beam forming requirement.
According to another aspect of the present disclosure, an apparatus for beamforming is provided, including:
the information acquisition module is used for acquiring the minimization drive test information measured by the terminal, wherein the minimization drive test information comprises first position information of the terminal; acquiring feedback information of the terminal, wherein the feedback information comprises arrival angle information or codebook information fed back by the terminal;
the calculation module is used for determining second position information of the terminal according to the feedback information of the terminal; performing joint positioning on the terminal according to the first position information and the second position information of the terminal to determine third position information of the terminal;
and the beam forming module is used for carrying out beam forming according to the third position information of the terminal so that the main beam points to the direction of the third position information of the terminal.
Optionally, the calculating module is configured to perform weighted calculation on the first location information and the second location information of the terminal, and a calculation result is used as the third location information of the terminal.
Optionally, the computing module is configured to search a matching record in a fingerprint database by using the first location information and the second location information of the terminal, and use actual location information of the terminal in the matching record as third location information of the terminal; wherein the records in the fingerprint repository include: the position information of the terminal is obtained through the minimization of drive test information, the position information of the terminal is determined through the terminal feedback information, and the corresponding actual position information of the terminal is obtained.
Optionally, the beamforming period is a preset fixed period, the minimization of drive test period, and any one of two periods determined according to the fixed period and the minimization of drive test period; the measurement period of the minimization of drive tests is configurable; the range of minimization of drive tests may be configured as a full network cell or a cell with beamforming requirements.
According to another aspect of the present disclosure, an apparatus for beamforming is provided, including:
a memory; and
a processor coupled to the memory, the processor configured to perform any of the foregoing beamforming methods based on instructions stored in the memory.
According to yet another aspect of the present disclosure, a computer-readable storage medium is proposed, on which a computer program is stored, which when executed by a processor, implements any of the methods of beamforming described above.
According to the method and the device, the terminal is jointly positioned according to the terminal positioning information based on the minimization of drive test and the terminal positioning information based on the terminal feedback, the accuracy of terminal positioning is improved, the main beam of beam forming points to the direction of joint positioning of the terminal, and the beam forming effect is improved.
Drawings
The drawings that will be used in the description of the embodiments or the related art will be briefly described below. The present disclosure will be more clearly understood from the following detailed description, which proceeds with reference to the accompanying drawings,
it is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without undue inventive faculty.
Fig. 1 is a schematic diagram of a network structure according to the present disclosure.
Fig. 2 is a flow diagram of some embodiments of a beamforming method of the present disclosure.
Fig. 3 is a schematic structural diagram of some embodiments of the beamforming apparatus of the present disclosure.
Fig. 4 is a schematic structural diagram of another embodiment of the beamforming apparatus of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure.
Fig. 1 is a schematic diagram of a network structure according to the present disclosure.
As shown in fig. 1, the network includes a base station and several terminals. And the terminal reports the minimization drive test information to the base station and returns feedback information such as an arrival angle or a codebook and the like to the base station. The minimization of drive tests information includes first location information of the terminal. The second location information of the terminal may be determined according to the feedback information of the terminal. The base station performs joint positioning on the terminal according to the first position information and the second position information of the terminal, so that the accuracy of the terminal positioning is improved, the main beam formed by the beam is pointed to the joint positioning direction of the terminal, and the beam forming effect is improved.
Fig. 2 is a flow diagram of some embodiments of a beamforming method of the present disclosure.
As shown in fig. 2, the beamforming method of this embodiment includes: 210-250.
In step 210, the base station acquires Minimization Drive Test (MDT) information measured by the terminal, the MDT information including first location information of the terminal.
In some embodiments, the base station starts the MDT function, and the terminal executes the MDT command and reports the MDT information.
In some embodiments, turning on the MDT function includes: the method comprises the steps of opening an MDT function switch, configuring the MDT function switch, subscribing MDT measurement and configuring relevant parameters such as a measurement event, a reporting period, a positioning mode and the like.
Specifically, the MDT function is turned on, including: and opening an MDT function switch, configuring an MDT tracking range according to the range requirement of beam forming, setting an MDT observation object, selecting a measurement event, and setting parameters of the measurement event, wherein the parameters comprise the threshold type, the trigger mechanism, the reporting times, the measurement threshold, the reporting interval, the positioning method, the log duration, the log interval, the maximum number of UE (user equipment) or the cell and the like of the measurement event.
For example, setting an MDT tracking range as a Cell (or a Cell in the whole network) with a beamforming requirement, setting an MDT observation object as an Immediate (Immediate) MDT (Immediate MDT requires a terminal to measure in a connected state and directly report a measurement result to the network), selecting a measurement event M1, setting an M1 threshold type as RSRP (Reference Signal Receiving Power), setting an M1 trigger mechanism as a period, setting the number of times of reporting M1 as unlimited, setting an M1RSRP threshold as 97, setting an M1RSRQ (Reference Signal Receiving Quality) threshold as a default, setting an M1 reporting interval as 5120ms, setting an M1 positioning method as (global navigation system) positioning and enhanced Cell identity (E-Cell ID) positioning, setting a logging duration as 3600s and setting a logging interval as 5120 ms.
In some embodiments, the minimization of drive test information reported by the terminal may include, in addition to the first location information of the terminal (for example, the longitude and latitude where the terminal is located), a serving cell RSRP, a serving cell RSRQ, interference information received by a cell (interference signal condition from the periphery), neighboring cell related information of available common frequencies or available different frequencies, and the like.
In step 220, the base station obtains feedback information Of the terminal, where the feedback information includes angle Of Arrival (Direction Of Arrival) information or codebook information fed back by the terminal.
The arrival angle feedback method is applied in a TDD (Time Division Duplex) network, for example. The codebook feedback method is applied to, for example, an FDD (Frequency Division Duplex) network.
In step 230, the base station determines second location information of the terminal according to the feedback information of the terminal.
The arrival angle positioning method comprises the following steps: the arrival angle of signals sent by the terminal is measured by using the multi-antenna array element, and the position of the terminal is necessarily located on a straight line drawn by the arrival angle measured value through one arrival angle measured value. If at least two angle-of-arrival measurements are measured from two antennas at different locations, the location of the terminal is located at the intersection of two straight lines drawn from the two antennas at the respective angle-of-arrival measurements. Providing redundant information using multiple angle-of-arrival measurements may improve positioning accuracy.
For example, assume that the terminal is located at (x, y) and the ith base station is located at (x)i,yi) The base station measures the incident angle (namely the arrival angle) of the incoming wave signal of the terminal as theta through the array antennaiThen, the linear equation of the base station and the terminal is:
through two or more than two base stations, a set of equations can be obtained, and the intersection point of the equations is the position of the terminal.
The codebook positioning method comprises the following steps: because the codebooks fed back by the terminals in different directions are different, the base station can determine the direction of the terminal according to the codebook fed back by the terminal.
In step 240, the base station performs joint positioning on the terminal according to the first position information and the second position information of the terminal to determine third position information of the terminal.
In an embodiment of joint positioning, the first position information and the second position information of the terminal are weighted and calculated, and the calculation result is used as the third position information of the terminal.
For example, a connecting line between the first position point and the second position point determines the third position point based on the weight, and the larger the weight of the position type is, the closer the position point actually calculated is to the position point of the type. For example, an average weight may be used, i.e. taking the midpoint of the line between the first location point and the second location point.
In a further embodiment of joint positioning, a matching record is looked up in a fingerprint database using the first location information and the second location information of the terminal, and the actual location information of the terminal in the matching record is used as the third location information of the terminal. Wherein the records in the fingerprint repository include: the position information of the terminal is obtained through the minimization of drive test information, the position information of the terminal is determined through the terminal feedback information, and the corresponding actual position information of the terminal is obtained.
In step 250, the base station performs beamforming according to the third location information of the terminal, so that the main beam points to the direction in which the third location information of the terminal is located. Therefore, the energy efficiency of the antenna is optimal, and the coverage performance is improved.
In some embodiments, the beamforming may be performed according to a preset fixed period, may also be performed in a manner synchronized with the minimization of drive test period, and may also be performed according to a double period determined by the fixed period and the minimization of drive test period. The dual-period beamforming means that beamforming is performed when the minimization of drive test information is received on the basis of the original fixed period.
The minimization of drive test periodic synchronization beam forming mode and the dual-period beam forming mode can adjust the main beam direction of beam forming in time according to terminal positioning.
And performing joint positioning on the terminal according to terminal positioning information based on the minimization of drive test and terminal positioning information based on terminal feedback such as an arrival angle or a codebook, so that the accuracy of the terminal positioning is improved, a main beam for beam forming points to the joint positioning direction of the terminal, and the beam forming effect is improved.
Fig. 3 is a schematic structural diagram of some embodiments of the beamforming apparatus of the present disclosure.
As shown in fig. 3, the beamforming apparatus of this embodiment includes: modules 310-330.
The information acquisition module 310 is configured to acquire minimization drive test information measured by a terminal, where the minimization drive test information includes first location information of the terminal; and acquiring feedback information of the terminal, wherein the feedback information comprises arrival angle information or codebook information fed back by the terminal.
A calculating module 320, configured to determine second location information of the terminal according to the feedback information of the terminal; and performing joint positioning on the terminal according to the first position information and the second position information of the terminal to determine third position information of the terminal.
And the beam forming module 330 is configured to form a beam according to the third location information of the terminal, so that the main beam points to a direction in which the third location information of the terminal is located.
In some embodiments, the calculating module 320 is configured to perform a weighted calculation on the first location information and the second location information of the terminal, and calculate a result as the third location information of the terminal.
In some embodiments, the calculating module 320 is configured to search a matching record in the fingerprint database by using the first location information and the second location information of the terminal, and use actual location information of the terminal in the matching record as third location information of the terminal; wherein the records in the fingerprint repository include: the position information of the terminal is obtained through the minimization of drive test information, the position information of the terminal is determined through the terminal feedback information, and the corresponding actual position information of the terminal is obtained.
In some embodiments, the beamforming period is a preset fixed period, the minimization of drive test period, or any one of two periods determined according to the fixed period and the minimization of drive test period.
In some embodiments, the measurement period of the minimization of drive tests is configurable.
In some embodiments, the range of minimization of drive tests may be configured as a full network cell or as a cell with beamforming requirements.
And performing joint positioning on the terminal according to terminal positioning information based on the minimization of drive test and terminal positioning information based on terminal feedback such as an arrival angle or a codebook, so that the accuracy of the terminal positioning is improved, a main beam for beam forming points to the joint positioning direction of the terminal, and the beam forming effect is improved.
Fig. 4 is a schematic structural diagram of another embodiment of the beamforming apparatus of the present disclosure.
As shown in fig. 4, the apparatus 400 of this embodiment includes: a memory 410 and a processor 420 coupled to the memory 410, the processor 420 configured to perform the method of beamforming in any of the foregoing embodiments based on instructions stored in the memory 410.
The apparatus 400 may also include an input output interface 430, a network interface 440, a storage interface 450, and the like. These interfaces 430, 440, 450 and the connection between the memory 410 and the processor 420 may be, for example, via a bus 460. The input/output interface 430 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 440 provides a connection interface for various networking devices. The storage interface 450 provides a connection interface for external storage devices such as an SD card and a usb disk.
The present disclosure also proposes a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of beamforming in any of the foregoing embodiments.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A method of beamforming, comprising:
acquiring minimization drive test information measured by a terminal, wherein the minimization drive test information comprises first position information of the terminal;
acquiring feedback information of the terminal, wherein the feedback information comprises arrival angle information or codebook information fed back by the terminal;
determining second position information of the terminal according to the feedback information of the terminal;
performing joint positioning on the terminal according to the first position information and the second position information of the terminal to jointly determine third position information of the terminal;
and carrying out beam forming according to the third position information of the terminal, so that the main beam points to the direction of the third position information of the terminal.
2. The method of claim 1, wherein determining the third location information of the terminal comprises:
and performing weighted calculation on the first position information and the second position information of the terminal, wherein the calculation result is used as the third position information of the terminal.
3. The method of claim 1, wherein determining the third location information of the terminal comprises:
searching a matched record in a fingerprint database by using the first position information and the second position information of the terminal, and taking the actual position information of the terminal in the matched record as the third position information of the terminal;
wherein the records in the fingerprint repository include: the position information of the terminal is obtained through the minimization of drive test information, the position information of the terminal is determined through the terminal feedback information, and the corresponding actual position information of the terminal is obtained.
4. The method of claim 1, wherein,
the wave beam forming period is a preset fixed period, the minimization drive test period, and any one of two periods determined according to the fixed period and the minimization drive test period.
5. The method of claim 1, wherein a measurement period of minimization of drive tests is configurable, and a range of minimization of drive tests is configurable as a full network cell or a cell with beamforming requirements.
6. An apparatus for beamforming, comprising:
the information acquisition module is used for acquiring the minimization drive test information measured by the terminal, wherein the minimization drive test information comprises first position information of the terminal; acquiring feedback information of the terminal, wherein the feedback information comprises arrival angle information or codebook information fed back by the terminal;
the calculation module is used for determining second position information of the terminal according to the feedback information of the terminal; performing joint positioning on the terminal according to the first position information and the second position information of the terminal to jointly determine third position information of the terminal;
and the beam forming module is used for carrying out beam forming according to the third position information of the terminal so that the main beam points to the direction of the third position information of the terminal.
7. The apparatus of claim 6, wherein,
the calculation module is used for performing weighted calculation on the first position information and the second position information of the terminal, and the calculation result is used as third position information of the terminal;
alternatively, the first and second electrodes may be,
the computing module is used for searching a matched record in a fingerprint database by using the first position information and the second position information of the terminal, and using the actual position information of the terminal in the matched record as the third position information of the terminal; wherein the records in the fingerprint repository include: the position information of the terminal is obtained through the minimization of drive test information, the position information of the terminal is determined through the terminal feedback information, and the corresponding actual position information of the terminal is obtained.
8. The apparatus of claim 6, wherein,
the wave beam forming period is a preset fixed period, the minimization drive test period, and any one of two periods determined according to the fixed period and the minimization drive test period;
the measurement period of the minimization of drive tests is configurable;
the range of minimization of drive tests may be configured as a full network cell or a cell with beamforming requirements.
9. An apparatus for beamforming, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of beamforming of any of claims 1-5 based on instructions stored in the memory.
10. A computer readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the method of beamforming according to one of the claims 1-5.
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| US9755797B2 (en) * | 2013-12-26 | 2017-09-05 | Mediatek Singapore Pte. Ltd. | Localization-based beamforming scheme for systems with multiple antennas |
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| CN102625444A (en) * | 2011-01-27 | 2012-08-01 | 中国移动通信集团公司 | Terminal positioning method and base station |
| CN103313185A (en) * | 2012-03-16 | 2013-09-18 | 电信科学技术研究院 | Position information acquiring method and equipment |
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