WO2017007177A1 - 단말의 방향 추정을 위한 빔 생성 장치 및 방법 - Google Patents
단말의 방향 추정을 위한 빔 생성 장치 및 방법 Download PDFInfo
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- WO2017007177A1 WO2017007177A1 PCT/KR2016/007076 KR2016007076W WO2017007177A1 WO 2017007177 A1 WO2017007177 A1 WO 2017007177A1 KR 2016007076 W KR2016007076 W KR 2016007076W WO 2017007177 A1 WO2017007177 A1 WO 2017007177A1
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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
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/27—Monitoring; Testing of receivers for locating or positioning the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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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
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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
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
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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
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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
- 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
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0882—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 post-detection diversity
- H04B7/0885—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 post-detection diversity with combination
Definitions
- the present invention relates to a beam generating apparatus and method, and more particularly to a beam generating apparatus and method in a high frequency band-based wireless communication system using a plurality of antenna beams.
- high frequency bands such as centimeter waves of 6 GHz or more (electromagnetic waves having a wavelength in centimeters, usually 3 to 30 GHz bands) or millimeter waves (wavelength of millimeters of electromagnetic waves, usually in the range of 30 to 300 GHz) are 5G. It is emerging as the main spectrum.
- This high frequency band is advantageous in terms of the implementation of the RF system that can increase the operating bandwidth as the center frequency is increased, it is possible to increase the density of the antenna. That is, in the high frequency band, when the physical size of the same antenna is assumed, as the frequency increases, the physical distance between radiators constituting the antenna decreases, thereby allowing a greater number of radiating elements to be integrated.
- the plurality of radiating elements control the amplitude (Amplitude) and phase (Phase) of the RF signal, Massive MIMO (Multiple Input Multiple) to enable 3D beamforming and multiple transmission to generate various types of antenna beams Output) is the hardware base of the technology.
- the increased path loss is overcome by forming a high-gain pencil beam using a plurality of antenna radiating elements increased by the use of high frequency.
- the beam width becomes very narrow and the propagation of the radio waves becomes strong while the diffraction is weakened. Therefore, if the base station and the terminal do not operate the appropriate transmit / receive beams according to the position change of the terminal, communication may not be smooth. .
- 1 is an exemplary view illustrating an antenna operation method in a conventional low frequency band based wireless communication system.
- 2 is an exemplary diagram of an antenna beam pattern in a conventional low frequency band based wireless communication system.
- an antenna having a relatively wide beam width by mainly utilizing attenuation of electromagnetic waves according to a transmission / reception distance between a base station and a terminal, that is, a low frequency band of less than 6 GHz having a low path loss. Even if it is applied, it was possible to create a smooth communication link.
- FIG. 3 illustrates a conventional method of deriving an optimal antenna beam in a high frequency band based wireless communication.
- the method shown in Figure 3 is a beam switching (Beam Switching) for selecting a beam that guarantees the best radio link among a plurality of preset antenna beam set (for example, base station antenna receiving beam # 1 to base station antenna receiving beam # N) ) Technique.
- Beam Switching Beam Switching
- FIG. 4 is an exemplary view of an antenna beam pattern for each antenna beam index in a high frequency band based wireless communication.
- FIG. 5 is an enlarged view of a portion of 10 degrees from -10 degrees of FIG. 4.
- the antenna beam pattern data shown in FIGS. 4 and 5 has discrete values at predetermined angular intervals rather than continuous values.
- FIG. 6 illustrates in more detail a conventional method of deriving an optimal antenna beam in a high frequency band wireless communication.
- the conventional method of deriving the optimal antenna beam as shown in Figure 6, by comparing the size of the received signal received from the terminal for each antenna receiving beam, the antenna beam having the largest received signal size is the optimal antenna receiving beam Is selected as.
- the angle of arrival (AoA) of the signal from the terminal i.e., the angle of the direction from the terminal to the base station relative to the reference direction
- the direction of the optimal antenna reception beam i.e. If the size does not coincide with the maximum angle (in FIG.
- the base station antenna receiving beam # 3 is selected as the optimal receiving beam, and the terminal is not positioned at 0 degrees, which is the direction angle of the base station antenna receiving beam # 3),
- the loss of electromagnetic waves is generated as compared with the case where the angle of arrival of the signal from the terminal and the direction of the optimal antenna reception beam coincide. This loss can be generated by the difference between the magnitude of the electromagnetic wave at the maximum and the directivity of the optimal antenna receiving beam and the magnitude of the electromagnetic wave at the intersection of the optimal antenna receiving beam and the adjacent beam (base station antenna receiving beam # 2).
- an antenna beam having a wide beam width is used as a method for coping with a problem of a beam switching technique.
- the method finds a suitable beam through recursive iteration that finds an optimal beam between terminals and subdivides the selected beam area into an antenna beam having a narrow beam width, or based on Maximum Likelihood (ML) for estimation of the position of the terminal in each stage.
- ML Maximum Likelihood
- DoA Direction of Arrival
- the received data of the entire beam used in each stage should be utilized, and the angle of the terminal (that is, the angle of arrival of the signal from the terminal) is calculated through a matrix operation. ), The amount of calculation was relatively high.
- an embodiment of the present invention in the high frequency band-based wireless communication, the first antenna beam having the largest magnitude of the received signal transmitted from the terminal to the base station among the plurality of antenna beams and the second largest second antenna beam
- the first antenna beam having the largest magnitude of the received signal transmitted from the terminal to the base station among the plurality of antenna beams and the second largest second antenna beam
- a first reception beam having a largest reception signal received from a terminal and a reception signal having a second largest reception magnitude are received from the terminal.
- a direction of the terminal based on a beam derivation unit for deriving a second reception beam and a ratio value of a magnitude of a reception signal received through the first reception beam and a reception signal received through the second reception beam;
- a control unit for estimating is a control unit for estimating.
- a first antenna beam is received from a terminal and a received signal having a second largest size is received from the terminal.
- Deriving a second reception beam and estimating a direction of the terminal by using a ratio value of a magnitude of a reception signal received through the first reception beam and a magnitude of a reception signal received through the second reception beam; And generating a reception beam in which the reception signal having the largest magnitude is received in the direction of the estimated terminal.
- the first antenna beam having the largest magnitude of the received signal transmitted to the base station and transmitted to the base station among the plurality of antenna beams is derived and the second largest second antenna beam is derived.
- the terminal is more accurately calculated with a relatively small amount of calculation.
- the angle of ie, the angle of arrival of the signal from the terminal
- the optimal antenna beam for the terminal can be generated using this.
- FIG. 1 is an exemplary view illustrating an antenna operation method in a conventional low frequency band based wireless communication system.
- FIG. 2 is an exemplary diagram of an antenna beam pattern in a conventional low frequency band based wireless communication system.
- FIG. 3 is a diagram illustrating a conventional method of deriving an optimal antenna beam in a high frequency band based wireless communication.
- FIG. 4 is an exemplary view of an antenna beam pattern for each antenna beam index in a high frequency band based wireless communication.
- FIG. 5 is an enlarged view of a portion of 10 degrees from -10 degrees of FIG. 4.
- FIG. 6 illustrates in more detail a conventional method of deriving an optimal antenna beam in a high frequency band wireless communication.
- FIG. 7 is a block diagram of a beam generating apparatus for direction estimation of a terminal according to an embodiment of the present invention.
- FIG. 8 illustrates an example of a beam pattern for each antenna beam index and a ratio of gains of an object beam and an adjacent beam for each angle according to an embodiment of the present invention.
- FIG. 9 illustrates a trend line of a ratio of gains of an object beam and an adjacent beam for each angle of FIG. 8.
- FIG. 10 is a diagram illustrating a method of estimating a direction of a terminal using a ratio value of magnitudes of received signals and a trend line of FIG. 9 according to an embodiment of the present invention.
- FIG. 11 is a diagram illustrating a gain improved when generating a reception beam in the direction of an estimated terminal according to an embodiment of the present invention.
- FIG. 12 is a flowchart illustrating a method of estimating a direction of a terminal and generating an optimal reception beam based on the same according to an embodiment of the present invention.
- the beam generating apparatus 700 includes a beam pattern measuring unit 702, a storage unit 704, a beam generating unit 706, a signal strength measuring unit 708, a control unit 710, a beam deriving unit 712, and the like. can do.
- the beam generating apparatus 700 may be part of a base station having a plurality of antennas. At least a part of the beam generating apparatus 700 may be implemented by a microprocessor.
- each component of the beam generating apparatus 700 will be described in detail with reference to FIG. 7.
- the beam pattern measuring unit 702 measures a beam pattern (for example, as shown in FIG. 5) of each of the plurality of reception beams generated by the beam generating unit 706.
- the beam pattern means a gain according to an angle (ie, direction). Measurement of the beam pattern may be performed for a finite number of angles.
- the beam pattern measuring unit 702 derives a ratio of the gain of the target beam and the adjacent beam for each angle and a trend line equation thereof from the measured beam patterns.
- the object beam for a particular angle is a reception beam having the largest gain at that angle among the plurality of reception beams.
- the adjacent beam for a particular angle is the receive beam with the second largest gain at that angle of the plurality of receive beams.
- the beam pattern measurement unit 702 stores the information on the ratio of the gain of the target beam and the adjacent beam for each angle and the trend line equation thereof in the storage unit 704, thereby providing an embodiment of the present invention.
- the controller 710 may use the information stored in the storage unit 704 during the estimation of the direction of the terminal and the optimal beam generation process based thereon.
- the beam pattern measuring unit 702 may include or be implemented by a microprocessor.
- the storage unit 704 may store information on the ratio of the gain ratio of the target beam and the adjacent beam for each angle, the trend line equation, and the like.
- the beam generator 706 generates a multi-beam of a high frequency band (for example, a centimeter wave or a millimeter wave of 6 GHz or more), and performs beamforming to the terminal side. That is, the beam generator 706 may generate multiple transmission beams for signal transmission to the terminal, and generate multiple reception beams for signal reception from the terminal.
- the beam generator 706 may generate multiple beams through analog beamforming, digital beamforming, or hybrid beamforming in combination of the two.
- analog beamforming may refer to generating one beam sequentially in different basebands
- digital beamforming refers to simultaneously generating a plurality of beams in parallel in different basebands. Can say to produce.
- the beam generator 706 may include various components such as a baseband unit, a phase shifter, a low noise amplifier, and a mixer unit for analog beamforming, digital beamforming, or hybrid beamforming as described above.
- the component of the corresponds to a general configuration that is already applied in the field of beamforming, so a detailed description thereof will be omitted.
- the beam generator 706 may generate a reception beam in the direction of the terminal estimated under the control of the controller 710, which will be described later.
- the signal strength measuring unit 708 receives a signal transmitted from the terminal. For example, when the UE transmits a random access channel (RACH) preamble or a sounding reference signal (SRS), the signal strength measuring unit 708 may each of the multiple reception beams generated by the beam generator 706. Calculate the amplitude (ie, electric field strength) of the received signal (ie, RACH preamble or SRS) received from the UE. That is, the signal strength measuring unit 708 may calculate the magnitude of the received signal received from the terminal through the reception beam of each antenna of the base station.
- RACH random access channel
- SRS sounding reference signal
- the signal strength measuring unit 708 may sequentially derive the received signal size of each received beam when the received beams generated by the beam generator 706 are generated by the analog beamforming, and may be generated by the digital beamforming. In this case, the reception signal size of each reception beam can be simultaneously derived in parallel.
- the beam derivation unit 712 When the beam derivation unit 712 receives the information on the received signal size from the terminal for each received beam generated by the beam generator 706 through the signal strength measuring unit 708, the received signal size of each received beam By comparing with the target beam (that is, the first receiving beam) that is the received beam having the largest size detected, and the adjacent beam (ie, the first received beam that is adjacent to the target beam and detected the second largest size) Information on the second reception beam).
- the beam deriving unit 712 transmits the information about the derived object beam and the adjacent beam to the controller 710.
- the beam derivation unit 712 may include or be implemented by a microprocessor.
- the controller 710 calculates a ratio value of the magnitude of the received signal received from the terminal through the target beam and the magnitude of the received signal received from the terminal through the adjacent beam.
- the controller 710 is a pair of the target beam and the adjacent beam derived by the beam derivation unit 712 among the information on the ratio of the gain of the target beam and the adjacent beam for each angle stored in the storage 704 and the trend line equation.
- Information is extracted and the direction of the terminal (that is, the direction from the beam generating apparatus 700 to the terminal) is estimated by applying the calculated ratio value to the extracted information.
- the direction of the terminal may be represented by an angle.
- the controller 710 may calculate an offset value that is an angle at which the direction of the terminal is displaced with respect to the direction of the target beam (that is, the direction in which electromagnetic waves can be received most strongly through the target beam).
- the controller 710 controls the beam generator 706 to generate the reception beam in the direction of the estimated terminal (that is, the offset value becomes 0).
- the controller 710 may transmit information on the estimated direction of the terminal or information on the calculated offset value to the beam generator 706.
- the beam generation unit 706 is configured to generate a reception beam in which the largest reception signal is received in the direction of the estimated terminal (that is, capable of strongly receiving electromagnetic waves), that is, a reception beam having a direction angle in the direction of the estimated terminal. By generating, the transmit and receive electric field strength between the terminal and the beam generating apparatus 700 (ie, the base station) may be improved.
- the beam generator 706 may generate an optimal reception beam by shifting the target beam with respect to the reception signal from the terminal so that the offset value becomes zero based on the calculated offset value.
- the control unit 710 may include or be implemented by a microprocessor.
- a reception beam (that is, a target beam) having the largest magnitude of a reception signal received from the terminal among multiple reception beams (ie, a target beam) and a second reception beam (ie, adjacent beam) are derived. Then, by calculating the size ratio of the received signal received through the target beam and the adjacent beam, an offset value that is an angle between the direction of the terminal and the direction of the terminal and the direction of the target beam can be obtained with a relatively small amount of calculation. That is, the beam pattern measuring unit 702 measures the beam pattern between the multiple reception beams in advance, calculates a ratio of gains of the object beam and the adjacent beam for each angle, and makes a database or curve fitting the curve.
- FIG. 8 illustrates an example of a beam pattern for each antenna beam index and a ratio of gains of an object beam and an adjacent beam for each angle according to an embodiment of the present invention.
- the same beam pattern for each antenna beam index as shown in FIG. 5 is illustrated.
- the combination of the object beam having the largest gain for each angle and the adjacent beam having the second largest gain can be derived from the beam pattern for each antenna beam index at the bottom of FIG. 8.
- Angular regions with the same object beam and adjacent beams for example, -6 to -4 degrees, -4 to -2 degrees, -2 to 0 degrees, 0 degrees In the region between 2 degrees, the region between 2 and 4 degrees, and the region between 4 and 6 degrees).
- the receiving beam # 2 is the largest because the gain of the receiving beam # 2 is the target beam
- the receiving beam # 1 is the second largest because the gain of the receiving beam # 1 is the second largest. 1 is an adjacent beam.
- the ratio of the gains of the object beams by angle (ie, direction) and the adjacent beams (that is, the gain of the object beams is the gain of the adjacent beams). Divided) can be calculated. This calculation may be performed by the beam pattern measurement unit 702, the result may be stored in the storage unit 704. In this case, since the beam pattern data is a discretized value, the ratio of the calculated gain is also discretized at a predetermined angular interval.
- FIG. 9 illustrates a trend line of a ratio of gains of an object beam and an adjacent beam for each angle of FIG. 8.
- the trend line of FIG. 9 may be derived by curve fitting data about a ratio of gains of an object beam and an adjacent beam for each angle.
- the trend line is a function representing the relationship between the gain ratio and the angle between the target beam and the adjacent beam, and may be expressed by various formulas such as a linear function, a polynomial function, and an exponential function.
- such a trend line may be databased through beam pattern measurement after fabricating the antenna and before operating the system.
- the trend line in the region where the target beam derived from the data of the ratio of the discrete gain shown in FIG. 9 is the reception beam # 3 and the adjacent beam is the reception beam # 2 (ie, between -2 degrees and 0 degrees) is It may be represented by the equation as in Equation 1 below.
- x is an angle and y is the magnitude ratio of the gain of receive beam # 3 (ie, the target beam) to receive beam # 2 (ie, the adjacent beam).
- the trend line equation for each angle region may be derived by the beam pattern measuring unit 702 and stored in the storage unit 704.
- FIG. 10 is a diagram illustrating a method of estimating a direction of a terminal using a ratio value of magnitudes of received signals and a trend line of FIG. 9 according to an embodiment of the present invention.
- the terminal 800 located at an angle (ie, direction) as shown in FIG. 10 transmits a RACH preamble or a sounding reference signal.
- the strongest signal may be received in the reception beam # 3
- the second strongest signal may be received in the reception beam # 2.
- the direction of the terminal that is, the direction of the terminal using the equation for the trend line 820 or the trend line 820 previously derived for the region 810 where the target beam is the reception beam # 3 and the adjacent beam is the reception beam # 2.
- An angle of arrival of the signal received from the terminal may be estimated.
- the value obtained by dividing the size of the received signal from the terminal received through the reception beam # 3 as the target beam by the size of the received signal from the terminal received through the reception beam # 2 as the adjacent beam on the trend line for the region 810. (Hereinafter, the ratio value 830) may be found on the vertical axis, and an angle value ⁇ at the horizontal axis corresponding thereto may be derived. That is, the direction corresponding to the value degree value ⁇ may be estimated as the direction of the terminal.
- the angle value ( ⁇ ) derived in this way is offset by the terminal that is different from the directivity angle (0 degree) of the target beam (receive beam # 3). This can be
- the angle of arrival of the signal transmitted from the terminal using the pre-calculated trend line equation as described above can be quickly estimated without complicated calculation compared to the Maximum Likelihood method.
- FIG. 11 is a diagram illustrating a gain improved when generating a reception beam in the direction of an estimated terminal according to an embodiment of the present invention.
- the reception beam 902 is generated to face the estimated direction of the terminal 800 according to an embodiment of the present invention
- the beam for measuring the beam pattern described with reference to FIGS. 7 and 8 is described.
- the reception signal from the terminal 800 uses the largest antenna beam 900 among the plurality of reception beams generated by the generation unit 706 (that is, the beam switch method)
- the direction of the terminal 800 It can be seen that the antenna gain is improved by as much as.
- the present invention it is possible to provide a radio wave environment that is superior to the method of selecting the reception beam 900 in the conventional beam switch method, the estimation of the direction of the terminal based on a simple equation (trend line equation) Because of this, it is possible to estimate the direction of the terminal faster than the Maximum Likelihood method requiring a complicated matrix operation.
- FIG. 12 is a flowchart illustrating a method of estimating a direction of a terminal and generating an optimal reception beam based on the same according to an embodiment of the present invention.
- the beam pattern measuring unit 702 of the beam generating apparatus 700 measures the beam pattern of each of the multiple reception beams (S1200).
- the beam pattern of the base station antenna reception beam generated to receive the signal transmitted from the terminal is illustrated for convenience of description, but is not limited thereto.
- the beam pattern measuring unit 702 derives a ratio of the gain of the target beam and the adjacent beam for each angle and a trend line equation thereof based on the beam patterns of each of the multiple reception beams, as shown in FIGS. 8 to 9. (S1202).
- the information such as the pattern size ratio and trend line formula for each target beam and adjacent beam combination derived as described above is stored in the storage unit 704 of the beam generating apparatus 700 by the controller 710 in the direction estimation process of the terminal. Reference may be made.
- the beam generating apparatus 700 may receive a RACH preamble or a sounding reference signal from the terminal 800. There is (S1204).
- the signal strength measuring unit 708 calculates the size of the received signal (RACH preamble or sounding reference signal) received from the terminal 800 for each reception beam (S1206).
- the beam derivation unit 712 compares the size of the received signal for each received beam (S1208), and secondly with the target beam (that is, the first received beam) that is the received beam in which the received signal having the largest size is sensed.
- the target beam that is, the first received beam
- the beam derivation unit 712 compares the size of the received signal for each received beam (S1208), and secondly with the target beam (that is, the first received beam) that is the received beam in which the received signal having the largest size is sensed.
- a pair of adjacent beams that is, a second reception beam
- a reception beam in which a reception signal having a large size is sensed is derived.
- the controller 710 may include information about the pair of the target beam and the adjacent beam derived through the comparison of the received signal magnitudes, and data about the ratio of the gain of the target beam and the adjacent beam for each angle as shown in FIGS. 8 to 9.
- the direction of the terminal 800 is estimated using the trend line equation (S1212).
- control unit 710 generates the reception beam again in the direction of the terminal estimated as described above (S1214).
- the transmit beam may be generated in the same way.
- the first antenna beam having the largest magnitude of the received signal transmitted from the terminal to the base station among the plurality of antenna reception beams is the second largest and the largest.
- Deriving the second antenna beam to calculate the ratio of the received signal size ratio of the first antenna beam and the second antenna beam, and a function corresponding to the ratio of the ratio of the calculated ratio value and the gain of the antenna target beam and the adjacent beam for each pre-stored angle By generating the optimal antenna beam for the terminal location tracking by using this, it is possible to estimate the position (ie, direction) of the terminal more accurately with a relatively small amount of calculation.
- the terminal position estimation can overcome the high path loss problem in the high-frequency band-based wireless communication to ensure the received electric field strength, it is possible to create / maintain the optimal radio link between the base station and the terminal.
- the base station antenna reception beam has been described as an example among various antenna beams, but it is also applicable to the terminal antenna reception beam.
- the signal source may be not only a terminal but also a base station or something else.
- a reception beam having the largest received signal ie, a target beam
- a received signal having the second largest reception signal among the plurality of reception beams when receiving a signal from a signal source, a reception beam having the largest received signal (ie, a target beam) and a received signal having the second largest reception signal among the plurality of reception beams.
- the direction of the signal source may be estimated using the magnitude ratio of the received signals of the reception beams (ie, adjacent beams). Conversely, the same applies to the case of operating the multi-beam in the antenna transmission beam of the terminal and the base station. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.
- low latency service and stable and improved radio link generation may be more easily implemented in a high frequency band mobile communication system such as 5G.
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Abstract
Description
Claims (10)
- 빔 생성 장치에 있어서,다수의 수신빔 중에서, 단말로부터 가장 큰 크기를 갖는 수신 신호가 수신되는 제 1 수신빔과 상기 단말로부터 두 번째로 큰 크기를 갖는 수신 신호가 수신되는 제 2 수신빔을 도출하는 빔 도출부와,상기 제 1 수신빔을 통해 수신된 수신신호의 크기와 상기 제 2 수신빔을 통해 수신된 수신신호의 크기의 비율값에 기초하여 상기 단말의 방향을 추정하는 제어부를 포함하는 빔 생성 장치.
- 제 1 항에 있어서,상기 다수의 수신빔 중에서 상기 제 1 수신빔이 가장 큰 이득을 갖고 상기 제 2 수신빔이 두 번째로 큰 이득을 갖는 영역에서의 방향별 상기 제 1 수신빔의 이득과 상기 제 2 수신빔의 이득의 비에 관한 정보를 저장하는 저장부를 더 포함하고,상기 제어부는상기 저장부에 저장된, 상기 영역에서의 방향별 상기 제 1 수신빔의 이득과 상기 제 2 수신빔의 이득의 비에 관한 정보; 및상기 제 1 수신빔을 통해 수신된 수신신호의 크기와 제 2 수신빔을 통해 수신된 수신신호 크기의 상기 비율값에 기초하여 상기 단말의 방향을 추정하는 빔 생성 장치.
- 제 2 항에 있어서,상기 정보는 상기 제 1 수신빔의 이득과 상기 제 2 수신빔의 이득의 비와 방향과의 관계에 관한 수학식을 포함하는 빔 생성 장치.
- 제 1 항에 있어서,상기 제어부는,상기 제 1 수신빔을 통해 수신된 수신신호의 크기를 상기 제 2 수신빔을 통해 수신된 수신신호의 크기로 나누어 상기 비율값을 계산하고, 상기 비율값을 기초로 상기 단말의 방향을 추정하는 빔 생성 장치.
- 제 1 항에 있어서,상기 추정된 단말의 방향을 지향각으로 하는 수신빔을 생성하는 빔 생성부를 더 포함하는 빔 생성 장치.
- 제 1 항에 있어서,상기 다수의 수신빔 각각을 통해 상기 단말로부터 수신되는 RACH (Random Access Channel) 프리앰블 또는 사운딩 참조 신호 (Sounding Reference Signal; SRS)의 크기를 산출하는 신호세기 측정부를 더 포함하는 빔 생성 장치.
- 다수의 수신빔 중에서, 단말로부터 가장 큰 크기를 갖는 수신 신호가 수신되는 제 1 안테나 빔과 상기 단말로부터 두 번째로 큰 크기를 갖는 수신신호가 수신되는 제 2 수신빔을 도출하는 단계와,상기 제 1 수신빔을 통해 수신된 수신신호의 크기와 상기 제 2 수신빔을 통해 수신된 수신신호의 크기의 비율값을 이용하여 상기 단말의 방향을 추정하는 단계와,상기 추정된 단말의 방향에서 가장 큰 크기를 갖는 수신 신호가 수신되는 수신빔을 생성하는 단계를 포함하는 빔 생성 방법.
- 제 7 항에 있어서,상기 단말의 방향을 추정하는 단계는,상기 다수의 수신빔 중에서 상기 제 1 수신빔이 가장 큰 이득을 갖고 상기 제 2 수신빔이 두 번째로 큰 이득을 갖는 영역에서의 방향별 상기 제 1 수신빔의 이득과 상기 제 2 수신빔의 이득의 비에 관한 정보; 및상기 제 1 수신빔을 통해 수신된 수신신호의 크기와 제 2 수신빔을 통해 수신된 수신신호 크기의 상기 비율값에 기초하여 상기 단말의 방향을 추정하는 단계인 빔 생성 방법.
- 제 7 항에 있어서,상기 단말의 방향을 추정하는 단계는상기 제 1 수신빔을 통해 수신된 수신신호의 크기를 상기 제 2 수신빔을 통해 수신된 수신신호의 크기로 나누어 상기 비율값을 계산하는 단계를 포함하는 빔 생성 방법.
- 제 7 항에 있어서,상기 다수의 수신빔 각각을 통해 상기 단말로부터 수신되는 RACH 프리앰블 또는 사운딩 참조 신호의 크기를 산출하는 단계를 더 포함하는 빔 생성 방법.
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US15/741,659 US10236946B2 (en) | 2015-07-03 | 2016-06-30 | Device and method for beam forming for estimating direction of terminal |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019101051A1 (zh) * | 2017-11-21 | 2019-05-31 | 索尼公司 | 用于无线通信系统的电子设备、方法和存储介质 |
WO2019156431A1 (ko) * | 2018-02-08 | 2019-08-15 | 삼성전자 주식회사 | 빔포밍 통신 시스템의 단말에서 빔 운용 방법 및 장치 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10587499B2 (en) * | 2015-12-30 | 2020-03-10 | Facebook, Inc. | Wireless node memory utilization for storing beamforming settings |
CN107835042B (zh) * | 2016-09-14 | 2020-12-01 | 华为技术有限公司 | 同步波束发送接收方法、网络设备、终端及系统 |
KR20200003168A (ko) * | 2017-05-12 | 2020-01-08 | 후아웨이 테크놀러지 컴퍼니 리미티드 | 무선 통신 시스템에서 브로드캐스트 빔 가중 치를 결정하기 위한 방법 및 장치 |
CN110247689B (zh) * | 2018-03-09 | 2023-02-03 | 深圳捷豹电波科技有限公司 | 终端的通信区域分配方法、装置、通信设备及存储介质 |
CN110753388B (zh) * | 2018-07-23 | 2021-08-20 | 华为技术有限公司 | 一种波束管理方法和相关设备 |
EP3874616A1 (en) * | 2018-10-29 | 2021-09-08 | Nokia Technologies Oy | Apparatus and method to estimate ue position |
KR102268675B1 (ko) * | 2019-01-21 | 2021-06-22 | 주식회사 케이티 | 위치 측위 방법 및 이를 위한 장치 |
US11342977B2 (en) * | 2020-08-03 | 2022-05-24 | Samsung Electronics Co., Ltd. | Method and apparatus of fusing radio frequency and sensor measurements for beam management |
US11445382B2 (en) | 2020-08-09 | 2022-09-13 | Shenzhen Jaguar Wave Technology Ltd. | Communication zone allocation method of terminal, device therefor, and communication equipment |
EP4302500A1 (en) * | 2021-03-05 | 2024-01-10 | Telefonaktiebolaget LM Ericsson (publ) | Methods and apparatus for providing mobility state information |
CN113194546B (zh) * | 2021-04-04 | 2023-12-15 | 山西昊翔能源集团有限公司 | 一种电网节点设备的运行大数据传输方法及系统 |
US20230276368A1 (en) * | 2022-02-27 | 2023-08-31 | Maxlinear, Inc. | Beamforming estimation |
KR20240058422A (ko) | 2022-10-26 | 2024-05-03 | 한양대학교 에리카산학협력단 | 무선 통신 상에서 랜덤 접속을 위한 프리앰블 자원 분배 시스템, 프리앰블 자원 분배 시스템, 장치 및 방법 |
CN117278144B (zh) * | 2023-11-22 | 2024-02-13 | 西安迅尔电子有限责任公司 | 一种侦察接收机低信噪比信号的检测方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050035906A1 (en) * | 2002-01-10 | 2005-02-17 | Jorn Krause | Method for determining a position with the aid of a radio signal having a rotating transmission characteristic |
US20050136963A1 (en) * | 2003-12-18 | 2005-06-23 | Motorola, Inc. | Method and apparatus for optimal multiple beam transmit weightings for beam to beam handoff in a switched beam system |
WO2013185322A1 (en) * | 2012-06-14 | 2013-12-19 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for position determination |
WO2014170663A1 (en) * | 2013-04-15 | 2014-10-23 | Inmarsat Global Limited | Transmitter positioning for satellite communications |
US20150133173A1 (en) * | 2013-08-22 | 2015-05-14 | Qualcomm, Incorporated | Utilizing a reference signal for indoor positioning |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8363744B2 (en) | 2001-06-10 | 2013-01-29 | Aloft Media, Llc | Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks |
EP1259008B1 (en) * | 2001-05-17 | 2006-10-04 | SAMSUNG ELECTRONICS Co. Ltd. | Mobile communication apparatus with antenna array and mobile coomunication method therefor |
US7336750B1 (en) * | 2002-11-22 | 2008-02-26 | Marvell International Ltd. | Optimal one-shot phase and frequency estimation for timing acquisition |
US7092673B2 (en) * | 2002-12-27 | 2006-08-15 | Nortel Networks Limited | Angle of arrival estimation in a wireless telecommunications network |
KR100646747B1 (ko) | 2004-12-17 | 2006-11-23 | 한국전자통신연구원 | 디지털 방송 수신 성능 개선을 위한 빔 결합 방법 및하이브리드 방식의 빔 선택 방법과, 그를 이용한 디지털방송 수신 장치 |
WO2008111142A1 (ja) * | 2007-03-09 | 2008-09-18 | Fujitsu Limited | 無線局 |
CN101686077B (zh) * | 2008-09-26 | 2012-10-03 | 电信科学技术研究院 | 一种多点协同传输的方法及装置 |
CN101800582A (zh) * | 2009-02-09 | 2010-08-11 | 中兴通讯股份有限公司 | 一种多用户波束成形方法及装置 |
WO2014054998A1 (en) * | 2012-10-04 | 2014-04-10 | Telefonaktiebolaget L M Ericsson (Publ) | A node and method for uplink detection with an assigned uplink physical layer identity |
KR102029102B1 (ko) | 2012-11-19 | 2019-11-11 | 삼성전자주식회사 | 빔포밍 시스템에서 빔 방향 선택 방법 및 장치 |
JP2016057165A (ja) | 2014-09-09 | 2016-04-21 | 富士通株式会社 | 無線通信装置及び推定方法 |
-
2015
- 2015-07-03 KR KR1020150095511A patent/KR102168183B1/ko active IP Right Grant
-
2016
- 2016-06-30 CN CN201680039516.4A patent/CN107710642B/zh active Active
- 2016-06-30 WO PCT/KR2016/007076 patent/WO2017007177A1/ko active Application Filing
- 2016-06-30 US US15/741,659 patent/US10236946B2/en active Active
- 2016-06-30 JP JP2017567695A patent/JP6483293B2/ja active Active
- 2016-06-30 EP EP16821583.8A patent/EP3319242B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050035906A1 (en) * | 2002-01-10 | 2005-02-17 | Jorn Krause | Method for determining a position with the aid of a radio signal having a rotating transmission characteristic |
US20050136963A1 (en) * | 2003-12-18 | 2005-06-23 | Motorola, Inc. | Method and apparatus for optimal multiple beam transmit weightings for beam to beam handoff in a switched beam system |
WO2013185322A1 (en) * | 2012-06-14 | 2013-12-19 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for position determination |
WO2014170663A1 (en) * | 2013-04-15 | 2014-10-23 | Inmarsat Global Limited | Transmitter positioning for satellite communications |
US20150133173A1 (en) * | 2013-08-22 | 2015-05-14 | Qualcomm, Incorporated | Utilizing a reference signal for indoor positioning |
Non-Patent Citations (1)
Title |
---|
See also references of EP3319242A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019101051A1 (zh) * | 2017-11-21 | 2019-05-31 | 索尼公司 | 用于无线通信系统的电子设备、方法和存储介质 |
CN111373666A (zh) * | 2017-11-21 | 2020-07-03 | 索尼公司 | 用于无线通信系统的电子设备、方法和存储介质 |
US10951273B2 (en) | 2017-11-21 | 2021-03-16 | Sony Corporation | Electronic device, method and storage medium for wireless communication system |
CN111373666B (zh) * | 2017-11-21 | 2023-10-10 | 索尼公司 | 用于无线通信系统的电子设备、方法和存储介质 |
WO2019156431A1 (ko) * | 2018-02-08 | 2019-08-15 | 삼성전자 주식회사 | 빔포밍 통신 시스템의 단말에서 빔 운용 방법 및 장치 |
US11374643B2 (en) | 2018-02-08 | 2022-06-28 | Samsung Electronics Co., Ltd. | Beam operation method and device at terminal of beamforming communication system |
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