CN113225111A - Beam forming method and related equipment - Google Patents
Beam forming method and related equipment Download PDFInfo
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- CN113225111A CN113225111A CN202010074598.4A CN202010074598A CN113225111A CN 113225111 A CN113225111 A CN 113225111A CN 202010074598 A CN202010074598 A CN 202010074598A CN 113225111 A CN113225111 A CN 113225111A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004590 computer program Methods 0.000 claims description 3
- 230000002085 persistent effect Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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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
- H04B7/0426—Power distribution
- H04B7/043—Power distribution using best eigenmode, e.g. beam forming or beam steering
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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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Abstract
The embodiment of the application provides a beam forming method and related equipment, wherein the method comprises the following steps: the base station forms N narrow beams corresponding to the same sector by adjusting the parameters of the antenna array; the base station determines M narrow beams from the N narrow beams; a base station receives a first signal from User Equipment (UE) through M narrow beams; wherein, the UE is located in the sector, the 3dB wave width of the narrow wave beam is less than 30 degrees, N is greater than 4, and M is less than or equal to N. In the embodiment of the application, after the base station performs sector wave velocity shaping through the antenna array, a plurality of narrow beams with the wave width of 3dB being less than 30 degrees can be generated, and signals from UE are received through a part of narrow beams.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method for forming a beam and a related device.
Background
Frequency Division Duplex (FDD) massive multiple-input multiple-output (MIMO) technology is a high-end form of multi-antenna technology evolution, and generally utilizes a static shared beam scheme to perform beamforming, fig. 1 is a schematic diagram of a beam form based on the static shared beam scheme, and as shown in fig. 1, a base station is based on an antenna array and can shape an initial beam of a certain sector to form a plurality of fixed beams (each fixed beam corresponds to a cell of the sector), and then perform signal transmission with User Equipment (UE) located in the sector through the beams.
However, in the static beam sharing scheme, different UEs located in the same cell may share one fixed beam for uplink signal reception, and since the width of a beam formed by one sector is large, the beam fineness is low, and the uplink coverage capability is poor.
Disclosure of Invention
The embodiment of the application provides a beam forming method and related equipment, which can provide beams with narrower widths, and because the beams have smaller widths and smaller beam fineness, higher beam forming gain can be obtained, and uplink coverage capability is improved.
A first aspect of an embodiment of the present application provides a method for beamforming, where the method includes:
the base station forms N narrow beams corresponding to the same sector by adjusting the parameters of the antenna array;
the base station determines M narrow beams from the N narrow beams;
a base station receives a first signal from a UE through M narrow beams;
wherein, the UE is located in the sector, the 3dB wave width of the narrow wave beam is less than 30 degrees, N is greater than 4, and M is less than or equal to N.
The method can be seen that: after the base station carries out sector wave velocity shaping through the antenna array, a plurality of narrow beams with the wave width of 3dB being less than 30 degrees can be generated, and a first signal from the UE is received through a part of narrow beams.
Based on the first aspect, in a first implementation manner of the first aspect of the embodiment of the present application, the determining, by the base station, M narrow beams from among the N narrow beams includes:
the base station receives a second signal from the UE through the N narrow beams;
the base station determines M narrow beams from the N narrow beams based on the signal strength of the second signal received by each narrow beam.
In the implementation manner, the base station selects M narrow beams from the N narrow beams by detecting the signal strength of the second signal received by each narrow beam, and the M narrow beams are used as the beams for subsequently receiving the first signal of the UE, so that the flexibility and the selectivity of the scheme are improved.
Based on the first aspect or the first implementation manner of the first aspect, in a second implementation manner of the first aspect of the embodiment of the present application, a value range of N is 5 to 40, so that flexibility and selectivity of a scheme are improved.
Based on the first aspect, the first implementation manner of the first aspect, or the second implementation manner of the first aspect, in a third implementation manner of the first aspect of the embodiment of the present application, a value range of a 3dB bandwidth of a narrow beam is 10 ° to 20 °, so that flexibility and selectivity of a scheme are improved.
Based on the first aspect, or any one of the first implementation manner of the first aspect to the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect of the embodiment of the present application, the parameters of the antenna array are phases and amplitudes of each antenna of the antenna array, so that flexibility and selectivity of the scheme are improved.
Based on the first aspect, or any one of the first implementation manner of the first aspect to the fourth implementation manner of the first aspect, in a fifth implementation manner of the first aspect of this embodiment of the present application, the second signal is a channel sounding reference signal or a physical random access channel.
A second aspect of an embodiment of the present application provides a base station, including:
a forming module, configured to adjust parameters of an antenna array to form N narrow beams corresponding to the same sector;
a determining module for determining M narrow beams from the N narrow beams;
a receiving module, configured to receive a first signal from a user equipment UE through M narrow beams;
wherein, the UE is located in the sector, the 3dB wave width of the narrow wave beam is less than 30 degrees, N is greater than 4, and M is less than or equal to N.
It can be seen from the above base station that: after the base station carries out sector wave velocity shaping through the antenna array, a plurality of narrow beams with the wave width of 3dB being less than 30 degrees can be generated, and a first signal from the UE is received through a part of narrow beams.
Based on the second aspect, in a first implementation manner of the second aspect of the embodiment of the present application, the determining module is further configured to:
the base station receives a second signal from the UE through the N narrow beams;
the base station determines M narrow beams from the N narrow beams based on the signal strength of the second signal received by each narrow beam.
In the implementation manner, the base station selects M narrow beams from the N narrow beams by detecting the signal strength of the second signal received by each narrow beam, and the M narrow beams are used as the beams for subsequently receiving the first signal of the UE, so that the flexibility and the selectivity of the scheme are improved.
Based on the second aspect or the first implementation manner of the second aspect, in the second implementation manner of the second aspect of the embodiment of the present application, a value range of N is 5 to 40, which improves flexibility and selectivity of the scheme.
Based on the second aspect, the first implementation manner of the second aspect, or the second implementation manner of the second aspect, in a third implementation manner of the second aspect of the embodiment of the present application, a value range of a 3dB bandwidth of a narrow beam is 10 ° to 20 °, so that flexibility and selectivity of a scheme are improved.
Based on the second aspect and any one of the first implementation manner of the second aspect to the third implementation manner of the second aspect, in a fourth implementation manner of the second aspect of the embodiment of the present application, the parameters of the antenna array are phases and amplitudes of each antenna of the antenna array, so that flexibility and selectivity of the scheme are improved.
Based on the second aspect, or any one of the first implementation manner of the second aspect to the fourth implementation manner of the second aspect, in a fifth implementation manner of the second aspect of the embodiment of the present application, the second signal is a channel sounding reference signal or a physical random access channel.
A third aspect of the embodiments of the present application provides a base station, including: one or more than one central processing unit, a memory, an input/output interface, a wired or wireless network interface and a power supply;
the memory is a transient memory or a persistent memory;
a central processor is configured to communicate with the memory, and to execute the operations of the instructions in the memory on a base station to perform the method of the first aspect, or any implementation of the first aspect.
A fourth aspect of the embodiments of the present application provides a computer storage medium for storing computer software instructions for a base station as described above, which includes a program for executing a program designed for the base station.
The base station may be as described in the second and third aspects above.
A fifth aspect of embodiments of the present application provides a computer program product, which includes computer software instructions that can be loaded by a processor to implement a procedure in the method for beamforming according to any one of the above first aspects.
According to the technical scheme, the embodiment of the application has the following advantages:
the embodiment of the application provides a beam forming method and related equipment, wherein the method comprises the following steps: the base station forms N narrow beams corresponding to the same sector by adjusting the parameters of the antenna array; the base station determines M narrow beams from the N narrow beams; a base station receives a first signal from a UE through M narrow beams; wherein, the UE is located in the sector, the 3dB wave width of the narrow wave beam is less than 30 degrees, N is greater than 4, and M is less than or equal to N. In the embodiment of the application, after the base station performs sector wave velocity shaping through the antenna array, a plurality of narrow beams with the wave width of 3dB being less than 30 degrees can be generated, and signals from UE are received through a part of narrow beams.
Drawings
Fig. 1 is a schematic diagram of a beam configuration based on a static shared beam scheme;
fig. 2 is a schematic flowchart of a method for beam forming according to an embodiment of the present application;
fig. 3 is a schematic diagram of a narrow beam provided by an embodiment of the present application;
fig. 4 is a schematic diagram of uplink coverage performance provided by an embodiment of the present application;
fig. 5 is another schematic diagram of uplink coverage performance provided by an embodiment of the present application;
fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present application;
fig. 7 is another schematic structural diagram of a base station according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a beam forming method and related equipment, which can provide beams with narrower widths, and because the beams have smaller widths and smaller beam fineness, higher beam forming gain can be obtained, and uplink coverage capability is improved.
The embodiment of the application can be applied to a communication system, wherein the communication system comprises a base station and the UE which are in communication link and can carry out information interaction. Specifically, the base station usually has an antenna array, which can be used for sector beamforming, i.e. forming multiple beams to perform signal coverage on multiple sectors, which is equivalent to achieving 360 ° (divided by multiple sectors) omni-directional coverage. For example, if one sector corresponds to a coverage area of 120 °, the base station may perform beamforming based on three sectors, and as shown in fig. 1, the base station may form 4 beams corresponding to one sector (two other sectors also correspond to 4 beams, respectively), where each beam is used to cover one cell of the sector, and therefore, different UEs located in the same cell may transmit uplink signals to the base station through the beam corresponding to the cell.
However, in the foregoing manner, each beam generally has a larger 3dB bandwidth, and the beam fineness is low, which results in poor uplink coverage capability, in order to solve the foregoing problems, the present application provides a method for beam forming, and fig. 2 is a flowchart of the method for beam forming provided by the present application, where the method includes:
201. the base station forms N narrow beams corresponding to the same sector by adjusting the parameters of the antenna array;
in this implementation, the base station shapes N narrow beams corresponding to the same sector by adjusting parameters on the antenna array, and in a possible implementation manner, the base station shapes N narrow beams corresponding to the same sector by adjusting phases and amplitudes of antennas of the antenna array. Wherein, of the N narrow beams, each narrow beam has a 3dB bandwidth of less than 30 degrees, N is greater than 4, and M is less than or equal to N. It should be noted that, in this embodiment, the antenna of the base station may face multiple sectors, and each sector may correspond to a coverage range of 120 °, a coverage range of 60 °, and so on, so that the base station may perform beamforming on each sector, so that each sector correspondingly forms N narrow beams, and thus, signal coverage of 360 ° is achieved.
In one possible implementation, the 3dB bandwidth of each narrow beam may range from 10 to 20 °. For ease of understanding, the narrow beams are further described below in conjunction with fig. 3. Fig. 3 is a schematic diagram of a narrow beam provided in an embodiment of the present application, and as shown in fig. 3, a base station splits a sector into N narrow beams, where a 3dB bandwidth of each narrow beam is 15 °, and the N narrow beams cover a range of 120 °. Further, since the beams formed by the base station are narrow beams with small beam widths, the number N of the narrow beams is usually large, specifically, the value of N ranges from 5 to 40, for example, in the example shown in fig. 3, the value of N is 30, that is, 30 narrow beams cover a range of 120 °.
202. The base station determines M narrow beams from the N narrow beams;
when the base station generates N narrow beams, M narrow beams for receiving the first signal from the UE may be determined from the N narrow beams. In one possible implementation, the base station determining M narrow beams from the N narrow beams includes: the base station receives the second signal from the UE through the N narrow beams, and then determines M narrow beams from the N narrow beams according to the signal strength of the second signal received by each narrow beam.
Specifically, after the base station generates N narrow beams, the UE located in the sector may send a second signal to the base station, where the second signal is a signal used for detecting the signal strength, and for example, the second signal may be a Sounding Reference Signal (SRS) or a Physical Random Access Channel (PRACH). After the UE sends the second signal to the base station, the base station receives the second signal through the N narrow beams, and each narrow beam receives the second signal, so the base station can detect the signal strength of the second signal received by each narrow beam, and determine M narrow beams from the N narrow beams based on the signal strength of the second signal received by each narrow beam, for receiving the first signal subsequently sent by the UE. Further, the M narrow beams are M beams with strongest SRS signal strength or strongest PRACH signal strength among the N narrow beams. Still as in the example shown in fig. 3, the UE may detect the SRS signal strengths of 30 narrow beams, and select 6 narrow beams with the strongest signal strengths for signal reception. It is noted that different UEs located in the same sector (usually, different geographical locations) may respectively select the 6 narrow beams with the strongest signal strength for signal reception.
It should be understood that the above example is only schematically illustrated by using M ═ 6, and does not limit the specific value of M in this embodiment, and M may be adaptively adjusted according to the location of the UE to ensure the optimal receiving performance, and is not limited specifically here.
203. A base station receives a first signal from a UE through M narrow beams;
after the base station determines the M narrow beams, when the UE transmits the first signal to the base station, the first signal may be received through the M narrow beams. It should be noted that the first signal is a signal of the UE interacting with the base station, such as a traffic signal.
In the embodiment of the application, the base station forms N beams narrower than the static shared beam by controlling the phase and the amplitude loaded on the antenna array, and the number of the N beams is more than that of the static shared beam, so that the receiving beam fineness is improved. For different UEs, the UE is not limited to share the same wide beam any more, but M optimal narrow beams are respectively selected through measurement of received signals, so that higher beam forming gain is obtained, and uplink covering capability is improved.
To further illustrate the uplink coverage capability of the embodiment of the present application, the uplink coverage capability of the embodiment of the present application is further described with reference to fig. 4 and 5, fig. 4 is a schematic diagram of the uplink coverage performance provided by the embodiment of the present application, and fig. 5 is another schematic diagram of the uplink coverage performance provided by the embodiment of the present application, it should be noted that, in fig. 4 and 5, curve 1 corresponds to the example corresponding to fig. 1, curve 2 corresponds to the scheme of the embodiment of the present application, and the uplink coverage performance is characterized by a Reference Signal Received Power (RSRP) signal strength of the uplink, as shown in fig. 4, when the distance between stations is 500m, the scheme of the embodiment of the present application covers a gain of 1.5dB at a 5% far point and an average gain of 2.5dB at a 5% far point. As shown in fig. 5, when the distance between stations is 2000m, the scheme of the embodiment of the present application covers a gain of 2.5dB at 5% far point and an average gain of 2.5 dB.
The foregoing is a detailed description of a beam forming method provided in the embodiment of the present application, and a base station provided in the embodiment of the present application is described below, fig. 6 is a schematic structural diagram of the base station provided in the embodiment of the present application, please refer to fig. 6, where the base station includes:
a forming module 601, configured to adjust parameters of an antenna array to form N narrow beams corresponding to the same sector;
a determining module 602, configured to determine M narrow beams from the N narrow beams;
a receiving module 603, configured to receive a first signal from a user equipment UE through M narrow beams;
wherein, the UE is located in the sector, the 3dB wave width of the narrow wave beam is less than 30 degrees, N is greater than 4, and M is less than or equal to N.
It can be seen from the above base station that: after the base station carries out sector wave velocity shaping through the antenna array, a plurality of narrow beams with the wave width of 3dB being less than 30 degrees can be generated, and a first signal from the UE is received through a part of narrow beams.
In one possible implementation, the determining module 602 is further configured to:
the base station receives a second signal from the UE through the N narrow beams;
the base station determines M narrow beams from the N narrow beams based on the signal strength of the second signal received by each narrow beam.
In the implementation manner, the base station selects M narrow beams from the N narrow beams by detecting the signal strength of the second signal received by each narrow beam, and the M narrow beams are used as the beams for subsequently receiving the first signal of the UE, so that the flexibility and the selectivity of the scheme are improved.
In a possible implementation mode, the value range of N is 5-40, so that the flexibility and the selectivity of the scheme are improved.
In a possible implementation mode, the value range of the 3dB wave width of the narrow wave beam is 10-20 degrees, so that the flexibility and the selectivity of the scheme are improved.
In a possible implementation manner, the parameters of the antenna array are the phase and amplitude of each antenna of the antenna array, so that the flexibility and the selectivity of the scheme are improved.
In one possible implementation, the second signal is a channel sounding reference signal or a physical random access channel.
It should be noted that, because the contents of information interaction, execution process, and the like between the modules/units of the apparatus are based on the same concept as the method embodiment of the present application, the technical effect brought by the contents is the same as the method embodiment of the present application, and specific contents may refer to the description in the foregoing method embodiment of the present application, and are not described herein again.
An embodiment of the present application further provides a base station, and fig. 7 is another schematic structural diagram of the base station provided in the embodiment of the present application, where the base station includes: one or more central processing units 701, a memory 702, an input/output interface 703, a wired or wireless network interface 704, a power supply 705;
the central processor 701 is configured to communicate with the memory 702, and to execute the operations of the instructions in the memory 702 on the base station to perform the method steps performed by the base station in the embodiment shown in fig. 2.
Embodiments of the present application also relate to a computer storage medium for storing computer software instructions for the base station, which includes a program for executing the program designed for the base station.
The base station may be as described in fig. 6 or fig. 7.
The embodiment of the present application also relates to a computer program product, which includes computer software instructions that can be loaded by a processor to implement the flow in the embodiment shown in fig. 2.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Claims (10)
1. A method of beamforming, the method comprising:
the base station forms N narrow beams corresponding to the same sector by adjusting the parameters of the antenna array;
the base station determines M narrow beams from the N narrow beams;
the base station receives a first signal from User Equipment (UE) through the M narrow beams;
wherein the UE is located within the sector, a 3dB bandwidth of the narrow beam is less than 30 °, the N is greater than 4, and the M is less than or equal to the N.
2. The method of claim 1, wherein the base station determining M narrow beams from the N narrow beams comprises:
the base station receiving a second signal from the UE through the N narrow beams;
the base station determines M narrow beams from the N narrow beams based on the signal strength of the second signal received by each narrow beam.
3. The beamforming method according to claim 1 or 2, wherein the value of N ranges from 5 to 40.
4. The method according to any of claims 1 to 3, wherein the 3dB bandwidth of the narrow beam is in the range of 10 ° to 20 °.
5. The method of any of claims 1 to 4, wherein the parameters of the antenna array are the phase and amplitude of each antenna of the antenna array.
6. The method according to any of claims 1 to 5, wherein the second signal is a channel sounding reference signal, SRS, or a physical random access channel, PRACH.
7. A base station, characterized in that the base station comprises:
a forming module, configured to adjust parameters of an antenna array to form N narrow beams corresponding to the same sector;
a determining module for determining M narrow beams from the N narrow beams;
a receiving module, configured to receive a first signal from a User Equipment (UE) through the M narrow beams;
wherein the UE is located within the sector, a 3dB bandwidth of the narrow beam is less than 30 °, the N is greater than 4, and the M is less than or equal to the N.
8. A base station, characterized in that the base station comprises: one or more than one central processing unit, a memory, an input/output interface, a wired or wireless network interface and a power supply;
the memory is a transient memory or a persistent memory;
the central processor is configured to communicate with the memory, the instructions in the memory being executable on the base station to perform the method of any of claims 1 to 6.
9. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 6.
10. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010074598.4A CN113225111A (en) | 2020-01-21 | 2020-01-21 | Beam forming method and related equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010074598.4A CN113225111A (en) | 2020-01-21 | 2020-01-21 | Beam forming method and related equipment |
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| CN113225111A true CN113225111A (en) | 2021-08-06 |
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| CN202010074598.4A Pending CN113225111A (en) | 2020-01-21 | 2020-01-21 | Beam forming method and related equipment |
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| WO2023109947A1 (en) * | 2021-12-16 | 2023-06-22 | 广东省新一代通信与网络创新研究院 | Split beam management method and system for uplink and downlink asymmetric communication mimo system |
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Application publication date: 20210806 |