WO2022188487A1 - Procédé et système de gestion de faisceau basés sur un système mimo de communication asymétrique de liaison montante et de liaison descendante - Google Patents

Procédé et système de gestion de faisceau basés sur un système mimo de communication asymétrique de liaison montante et de liaison descendante Download PDF

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WO2022188487A1
WO2022188487A1 PCT/CN2021/136092 CN2021136092W WO2022188487A1 WO 2022188487 A1 WO2022188487 A1 WO 2022188487A1 CN 2021136092 W CN2021136092 W CN 2021136092W WO 2022188487 A1 WO2022188487 A1 WO 2022188487A1
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channel
uplink
downlink
antenna
channel estimation
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PCT/CN2021/136092
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English (en)
Chinese (zh)
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阳堃
赖峥嵘
李永军
刘元
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广东省新一代通信与网络创新研究院
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Publication of WO2022188487A1 publication Critical patent/WO2022188487A1/fr

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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
    • 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
    • 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

Definitions

  • the present invention relates to the technical field of wireless communication, and in particular, to a beam management method and system based on an uplink and downlink asymmetric communication MIMO system.
  • Beamforming technology is the main technology of the current massive MIMO (multiple-in multipleout) system, and it is a signal preprocessing method based on the antenna array.
  • the weighting coefficients produce directional beams, resulting in significant array gain. Therefore, independent control of each array element is the key to gain gain.
  • the baseband processing capability required by the digital architecture for independent control of each array element is too high and cannot be satisfied, resulting in a digital-analog hybrid antenna. Architecture.
  • the number of antenna elements is 192 elements, the downlink uses 64 baseband channels, and 1 channel drives 3 array elements; the uplink uses 16 elements. Baseband channel, 1 channel drives 12 array elements.
  • the uplink receiving end needs to perform channel estimation on the user, and determine the user's location according to the user's channel information, thereby determining the direction of the downlink transmit beam.
  • the uplink receiver can only perform pre-weighting on one channel at a time, that is, 12 array elements at a time due to the baseband part.
  • phase shifter phase one position of the phase shifter corresponds to one beam direction
  • the technical problem to be solved by the present invention is to provide a beam management method based on an uplink and downlink asymmetric communication MIMO system, which can reduce the time delay and resource consumption of beam scanning when adjusting the phase shifter, and greatly improve beam management. s efficiency.
  • a first aspect of the present invention discloses a beam management method based on an uplink and downlink asymmetric communication MIMO system, wherein the uplink and downlink asymmetric communication MIMO system includes an uplink transmitting end provided with an asymmetrical antenna channel and a downlink The receiving end, the antenna channel of the receiving end is provided with a plurality of phase shifters, and the method includes: determining the number of beam switching times according to the ratio of the antenna channels of the uplink transmitting end and the downlink receiving end; The phase of all phase shifters is calculated, and the single antenna channel after each adjustment is estimated to generate channel estimates corresponding to different phases; channel estimates of all antenna channels are recovered according to the channel estimates corresponding to different phases and the phases of all phase shifters. value; generating a working beam according to the channel estimation values of all antenna channels and a preset beam design model, and performing beam management through the working beam.
  • a beam management method based on an uplink and downlink asymmetric communication MIMO system characterized in that the preset beam design model includes a plurality of beam weights associated with the beam, the The antenna channel channel estimates and the preset beam design model generate working beams, including: performing correlation calculation between all antenna channel channel estimates and the beam weights respectively to generate the energy values of the antenna channels in the preset beam design model ; Mark the beam corresponding to the maximum energy value of each antenna channel as a working beam, and perform beam management through the working beam.
  • the preset beam design model is generated based on the discrete Fourier transform spatial sampling principle.
  • the method further includes performing pre-weighting processing on the working beam and sending it to the downlink receiving end.
  • a second aspect of the present invention discloses a beam management system for an uplink and downlink asymmetric communication MIMO system.
  • the system includes an uplink transmitting end and a downlink receiving end provided with an asymmetric antenna channel, and the antenna channel of the receiving end is provided with There are a plurality of phase shifters, and the system includes: a ratio determination module for determining the number of beam switching times according to the antenna channel ratio of the uplink transmitting end and the downlink receiving end; a channel estimation module for adjusting the number of beam switching on the receiving end.
  • the phases of all the phase shifters are set, and the single antenna channel after each adjustment is estimated to generate channel estimation values corresponding to different phases; the channel recovery module is used for channel estimation values corresponding to different phases and the phases of all phase shifters. Restoring channel estimation values of all antenna channels; a beam management module for generating working beams according to the channel estimation values of all antenna channels and a preset beam design model, and performing beam management through the working beams.
  • the preset beam design model includes a plurality of beam weights that are associated with the beams
  • the beam management module includes: a calculation unit, configured to compare all the antenna channel channel estimation values with the beams respectively. Correlation calculation is performed on the beam weight to generate the energy value of the antenna channel in the preset beam design model; the management unit is used to mark the beam corresponding to the maximum energy value of each antenna channel as the working beam, and the beam is carried out through the working beam. manage.
  • the preset beam design model is generated based on the discrete Fourier transform spatial sampling principle.
  • the system further includes: a beam weighting module, configured to perform pre-weighting processing on the working beam and send it to the downlink receiving end.
  • a beam weighting module configured to perform pre-weighting processing on the working beam and send it to the downlink receiving end.
  • a third aspect of the present invention discloses a communication device, comprising a memory, a processor, and a computer program stored on the memory and running on the processor; the processor implements the above-mentioned program when the processor executes the program Steps in a beam management method based on an uplink and downlink asymmetric communication MIMO system.
  • a fourth aspect of the present invention discloses a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps in the above-mentioned beam management method based on an uplink-downlink asymmetric communication MIMO system
  • the channel recovery of the estimation of the entire antenna channel channel can be performed, and all the channel estimation parameters after recovery can be used to perform channel recovery.
  • Beam management and downlink pre-weighting processing are used for downlink transmission, and at the same time, it also solves the beam direction quantization loss caused by the phase shifter position, which greatly improves the efficiency of beam management, so that the optimal weighting can be obtained when the downlink receiving end is weighted. beam performance.
  • FIG. 1 is a schematic flowchart of beam management based on an uplink and downlink asymmetric communication MIMO system disclosed in an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of another beam management based on an uplink and downlink asymmetric communication MIMO system disclosed in an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of beam management based on an uplink and downlink asymmetric communication MIMO system disclosed in an embodiment of the present invention
  • FIG. 4 is a schematic diagram of another application of beam management based on an uplink and downlink asymmetric communication MIMO system disclosed in an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an application of beam management based on an uplink and downlink asymmetric communication MIMO system disclosed in an embodiment of the present invention
  • FIG. 6 is a schematic diagram of an application of beam management based on an uplink and downlink asymmetric communication MIMO system disclosed in an embodiment of the present invention
  • FIG. 7 is a schematic diagram of another disclosed application of beam management based on an uplink and downlink asymmetric communication MIMO system disclosed by an embodiment of the present invention.
  • FIG. 8 is a system schematic diagram of beam management based on an uplink and downlink asymmetric communication MIMO system disclosed in an embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of a disclosed apparatus for beam management based on an uplink and downlink asymmetric communication MIMO system disclosed by an embodiment of the present invention.
  • the uplink receiver needs to perform channel estimation on the user, and determine the user's position according to the user's channel information, thereby determining the direction of the downlink transmit beam.
  • the number of antenna array elements is 192 array elements, 64 baseband channels are used for downlink, 3 array elements are driven by 1 baseband channel, 16 baseband channels are used in uplink, and 1 baseband channel is used to drive 12 array elements.
  • the uplink receiving end can only pre-weight 12 array elements at a time due to the baseband part, which needs to be weighted in the analog domain inside the antenna, that is, the antenna array elements are weighted by the phase shifter.
  • phase shifter phase (equivalent to one gear of the phase shifter corresponding to one beam direction) has certain restrictions on switching, it can only be switched on certain gears. Therefore, when performing channel estimation in the uplink, switch all the phase shifter gears and perform channel estimation respectively. By comparing the magnitude of the receiving channel energy under different phase shifter gears, select the gear corresponding to the maximum receiving channel energy. As the beam where the user is located, it will cause the phase shifter to traverse all the gears for phase switching, the total switching time required is long, and the user beam judgment time delay is large. In addition, when the phase shifter phase switches the gears, there is a gap between the beams. If the user is just between the two beams, the user's performance will be poor.
  • the embodiment of the present invention discloses a beam management and system based on an uplink and downlink asymmetric communication MIMO system, which can perform the whole process on the asymmetric uplink and downlink antenna channels only according to the ratio of the number of uplink and downlink antenna channels as the number of beam switching times.
  • the estimated channel of the antenna channel channel is recovered, and all the channel estimation parameters after recovery are used for beam management and downlink pre-weighting processing, and downlink transmission is performed.
  • the efficiency of beam management is improved, so that optimal beam performance can be obtained when weighting at the downlink receiving end is performed.
  • FIG. 1 is a schematic flowchart of a beam management method based on an uplink and downlink asymmetric communication MIMO system disclosed by an embodiment of the present invention.
  • the beam management method based on the uplink and downlink asymmetric communication MIMO system can be applied to the uplink and downlink asymmetric communication MIMO system.
  • the system includes an uplink transmitting end and a downlink receiving end provided with asymmetric antenna channels, and the antenna channel of the receiving end is provided with Having a plurality of phase shifters is not limited to this embodiment of the present invention.
  • the beam management method based on the uplink and downlink asymmetric communication MIMO system may include the following operations:
  • the phase shifter needs to coordinate with each uplink to adjust its own phase.
  • the ratio of the antenna channels of the uplink transmitter to the downlink receiver can be used as the number of times the phase shifter adjusts the phase.
  • the phase modulation operation of the phase shifter can be performed, and each phase shifter is phase-modulated by using the number of beam switching times, for example, 4 times, and the corresponding channel estimation value is obtained according to the channel estimation algorithm.
  • the phase shifter 1 and the phase shifter 2 after the first phase modulation the phase shifter 1 corresponds to ⁇ 01
  • the phase shifter 2 corresponds to ⁇ 02
  • the phase shifter 2 corresponds to ⁇ 02.
  • the user performs channel estimation to obtain a channel estimation value H0, which is obtained by calculation using an existing channel estimation algorithm, which is not the focus of this application and will not be described in detail.
  • phase shifter 1 corresponds to ⁇ 11
  • phase shifter 2 corresponds to ⁇ 12
  • channel estimation is performed on the user to obtain the channel estimation value H1.
  • the phase of phase shifter 1 and phase shifter 2 after the third phase modulation is that phase shifter 1 corresponds to ⁇ 21, and phase shifter 2 corresponds to ⁇ 22, and then channel estimation is performed on the user to obtain the channel estimation value H2.
  • the phases of the phase shifter 1 and the phase shifter 2 after the fourth phase modulation are that the phase shifter 1 corresponds to ⁇ 31, and the phase shifter 2 corresponds to ⁇ 32, and then performs channel estimation for the user to obtain the channel estimation value H3.
  • the channel estimation value of the same proportion can be solved by constructing an equation, and then continue to use the solved channel estimation value to solve until The channel estimation values of all antenna channels are solved, thereby realizing the recovery of the antenna channel estimation values of all antenna channels.
  • the channel estimates for the three antenna channels that need to be recovered are denoted as h0, h1, and h2.
  • h0, h1, h2, h3 can be calculated. So far, by adjusting the phase of the phase shifter, and only through the channel estimation value of one antenna channel, the channel estimation value of four antenna channels can be recovered, and so on, 64 channels can be recovered from 16 receiving channels. The channel estimation realizes the recovery of the channel estimation value of the full antenna channel.
  • the preset beam design model is generated based on the discrete Fourier transform spatial sampling principle, which includes a plurality of beam weights that are associated with the beam.
  • the channel estimation values of all antenna channels are calculated by correlation with the beam weights to generate the energy value of the antenna channel in the preset beam design model [p0, ...,p63]
  • mark the beam corresponding to the maximum energy value of each antenna channel as the working beam and perform beam management through the working beam, that is, record the beam with the maximum energy for the antenna channel required by each user as its working beam, and carry out Beam management.
  • the method disclosed in this embodiment on asymmetric uplink and downlink antenna channels, only the ratio of the number of uplink and downlink antenna channels can be used as the number of beam switching times, and the estimated channel recovery of the entire antenna channel channel can be performed, and the recovered channel can be used. All channel estimation parameters are subjected to beam management and downlink pre-weighting processing for downlink transmission. At the same time, the beam direction quantization loss caused by the phase shifter position is also solved, which greatly improves the efficiency of beam management.
  • FIG. 2 is a schematic flowchart of another beam management method based on an uplink and downlink asymmetric communication MIMO system disclosed by an embodiment of the present invention.
  • the beam management method based on the uplink and downlink asymmetric communication MIMO system can be applied to the uplink and downlink asymmetric communication MIMO system.
  • the system includes an uplink transmitting end and a downlink receiving end provided with asymmetric antenna channels, and the antenna channel of the receiving end is provided with Having a plurality of phase shifters is not limited to this embodiment of the present invention. as shown in picture 2,
  • the phase shifter needs to coordinate with each uplink to adjust its own phase.
  • the ratio of the antenna channels of the uplink transmitter to the downlink receiver can be used as the number of times the phase shifter adjusts the phase.
  • the phase modulation operation of the phase shifter can be performed, and each phase shifter is phase-modulated by using the number of beam switching times, for example, 4 times, and the corresponding channel estimation value is obtained according to the channel estimation algorithm.
  • the phase shifter 1 and the phase shifter 2 after the first phase modulation the phase shifter 1 corresponds to ⁇ 01
  • the phase shifter 2 corresponds to ⁇ 02
  • the phase shifter 2 corresponds to ⁇ 02.
  • the user performs channel estimation to obtain a channel estimation value H0, which is obtained by calculation using an existing channel estimation algorithm, which is not the focus of this application and will not be described in detail.
  • phase shifter 1 corresponds to ⁇ 11
  • phase shifter 2 corresponds to ⁇ 12
  • channel estimation is performed on the user to obtain the channel estimation value H1.
  • the phase of phase shifter 1 and phase shifter 2 after the third phase modulation is that phase shifter 1 corresponds to ⁇ 21, and phase shifter 2 corresponds to ⁇ 22, and then channel estimation is performed on the user to obtain the channel estimation value H2.
  • the phases of the phase shifter 1 and the phase shifter 2 after the fourth phase modulation are that the phase shifter 1 corresponds to ⁇ 31, and the phase shifter 2 corresponds to ⁇ 32, and then performs channel estimation for the user to obtain the channel estimation value H3.
  • the channel estimation value of the same proportion can be solved by constructing an equation, and then continue to use the solved channel estimation value to solve until The channel estimation values of all antenna channels are solved, thereby realizing the recovery of the antenna channel estimation values of all antenna channels.
  • the channel estimates for the three antenna channels that need to be recovered are denoted as h0, h1, and h2.
  • h0, h1, h2, h3 can be calculated. So far, by adjusting the phase of the phase shifter, and only through the channel estimation value of one antenna channel, the channel estimation value of four antenna channels can be recovered, and so on, 64 channels can be recovered from 16 receiving channels. The channel estimation realizes the recovery of the channel estimation value of the full antenna channel.
  • the preset beam design model is generated based on the discrete Fourier transform spatial sampling principle, which includes a plurality of beam weights that are associated with the beam.
  • the channel estimation values of all antenna channels are calculated by correlation with the beam weights to generate the energy value of the antenna channel in the preset beam design model [p0, ...,p63]
  • mark the beam corresponding to the maximum energy value of each antenna channel as the working beam and perform beam management through the working beam, that is, record the beam with the maximum energy for the antenna channel required by each user as its working beam, and carry out Beam management.
  • the pre-weighting uses the beam weight of the previously preset beam design model to perform beam forming, so as to complete the transmission to the downlink receiving end.
  • the downlink is sent to a single user, the user's working beam is directly used for pre-weighting, and then the downlink transmission is performed.
  • the downlink is sent to multiple users, the multiple users are selected first, and users with different working beams are selected for pairing, and then the downlink transmission is performed.
  • the method disclosed in this embodiment on asymmetric uplink and downlink antenna channels, only the ratio of the number of uplink and downlink antenna channels can be used as the number of beam switching times, and the estimated channel recovery of the entire antenna channel channel can be performed, and the recovered channel can be used. All channel estimation parameters are subjected to beam management and downlink pre-weighting processing for downlink transmission. At the same time, the quantization loss of the beam direction caused by the phase shifter position is also solved, which greatly improves the efficiency of beam management. , the optimal beam performance can be obtained.
  • FIG. 3 is a schematic diagram of a specific application of another beam management method based on an uplink and downlink asymmetric communication MIMO system disclosed by an embodiment of the present invention.
  • FIG. 4 and FIG. 5 are schematic diagrams of the transmitting end and the receiving end of the asymmetric communication MIMO system according to the present embodiment.
  • the entire communication system consists of 8 horizontal antenna elements, 12 vertical antenna elements, 2 polarized antenna elements, a total of 192 antenna elements, 64 antenna channels at the upstream transmitting end, including 1 vertical drive 3, and 16 antenna channels at the downstream receiving end, including Vertical 1-drive 16 asymmetric MIMO system.
  • three phase shifters are arranged at the downlink receiving end, phase shifter 1 , phase shifter 2 and phase shifter 3 .
  • phase shifter 1/phase shifter 2/phase shifter 3 at the receiving end need to adjust 4 times, adjust the phase of phase shifter 1/phase shifter 2/phase shifter 3 at the receiving end to be ⁇ 01/ ⁇ 02/ ⁇ 03, and then perform channel estimation for the user to obtain the channel estimation value H0. Adjust the phase of phase shifter 1/phase shifter 2/phase shifter 3 at the receiving end to be ⁇ 11/ ⁇ 12/ ⁇ 13, and then perform channel estimation on the user to obtain the channel estimation value H1. Adjust the phase of the phase shifter phase shifter 1/phase shifter 2/phase shifter 3 at the receiving end to be ⁇ 21/ ⁇ 22/ ⁇ 23, and then perform channel estimation on the user to obtain the channel estimation value H2.
  • the four equations can be solved with four unknowns, and h0, h1, h2, h3 can be obtained by calculation. So far, by adjusting the phase shifter and the channel estimation of one channel, the channel estimation of four channels can be recovered, and so on, the channel estimation of 64 channels can be recovered from the 16 receiving channels, and the channel estimation of 64 channels can be obtained.
  • User 64 antenna channel channel estimation information h [h0, . . . , h63], beam management and beam pre-weighting can be performed.
  • the preset beam design model is regenerated.
  • a total of 64 beams in 8 horizontal, 4 vertical, and 2 polarization directions are designed, and the corresponding directions of the beam IDs are shown in FIG. 7 .
  • downlink pre-weighting processing is performed by using the working beam again, beamforming is performed, and downlink transmission is completed.
  • the user's working beam is directly used for pre-weighting, and then the downlink transmission is performed.
  • the downlink is sent to multiple users, the multiple users are selected first, and users with different working beams are selected for pairing, and then the downlink transmission is performed.
  • the method disclosed in this embodiment on asymmetric uplink and downlink antenna channels, only the ratio of the number of uplink and downlink antenna channels can be used as the number of beam switching times, and the estimated channel recovery of the entire antenna channel channel can be performed, and the recovered channel can be used. All channel estimation parameters are subjected to beam management and downlink pre-weighting processing for downlink transmission. At the same time, the quantization loss of the beam direction caused by the phase shifter position is also solved, which greatly improves the efficiency of beam management. , the optimal beam performance can be obtained.
  • FIG. 8 is a beam management system based on an uplink and downlink asymmetric communication MIMO system disclosed by an embodiment of the present invention. As shown in Figure 8, the system includes:
  • An uplink transmitter 1 and a downlink receiver 2 are provided with an asymmetric antenna channel, and a plurality of phase shifters 3 are arranged on the antenna channel of the receiver.
  • the system includes:
  • the channel estimation module 5 is used for adjusting the phases of all phase shifters set on the receiving end according to the number of beam switching, and estimating a single antenna channel after each adjustment to generate channel estimation values corresponding to different phases.
  • the phase modulation operation of the phase shifter can be performed, and each phase shifter is phase-modulated by using the number of beam switching times, for example, 4 times, and the corresponding channel estimation value is obtained according to the channel estimation algorithm.
  • two phase shifters are required, then for the phase shifter 1 and the phase shifter 2 after the first phase modulation, the phase shifter 1 corresponds to ⁇ 01, the phase shifter 2 corresponds to ⁇ 02, and then the phase shifter 2 corresponds to ⁇ 02.
  • phase shifter 1 corresponds to ⁇ 11
  • phase shifter 2 corresponds to ⁇ 12
  • channel estimation is performed on the user to obtain the channel estimation value H1.
  • the phase of phase shifter 1 and phase shifter 2 after the third phase modulation is that phase shifter 1 corresponds to ⁇ 21, and phase shifter 2 corresponds to ⁇ 22, and then channel estimation is performed on the user to obtain the channel estimation value H2.
  • the phases of the phase shifter 1 and the phase shifter 2 after the fourth phase modulation are that the phase shifter 1 corresponds to ⁇ 31, and the phase shifter 2 corresponds to ⁇ 32, and then performs channel estimation for the user to obtain the channel estimation value H3.
  • the channel recovery module 6 is configured to recover the channel estimation values of all antenna channels according to the channel estimation values corresponding to different phases and the phases of all phase shifters.
  • the channel estimation value of the same proportion can be solved by constructing an equation, and then continue to use the solved channel estimation value to solve until The channel estimation values of all antenna channels are solved, thereby realizing the recovery of the antenna channel estimation values of all antenna channels.
  • the channel estimates for the three antenna channels that need to be recovered are denoted as h0, h1, and h2.
  • h0, h1, h2, h3 can be calculated. So far, by adjusting the phase of the phase shifter, and only through the channel estimation value of one antenna channel, the channel estimation value of four antenna channels can be recovered, and so on, 64 channels can be recovered from 16 receiving channels. The channel estimation realizes the recovery of the channel estimation value of the full antenna channel.
  • the beam management module 7 is used for generating a working beam according to all antenna channel channel estimation values and a preset beam design model, and performing beam management through the working beam.
  • the preset beam design model includes a plurality of beam weights that are associated with the beam, and the beam management module includes: a calculation unit 701, configured to perform correlation calculation between all antenna channel channel estimation values and the beam weights respectively to generate an antenna The energy value of the channel in the preset beam design model.
  • the management unit 702 is configured to mark the beam corresponding to the maximum energy value of each antenna channel as a working beam, and perform beam management through the working beam.
  • the preset beam design model is generated based on the discrete Fourier transform spatial sampling principle.
  • the preset beam design model includes a plurality of beam weights that are associated with the beam.
  • the beam corresponding to the value is used as the working beam, and beam management is performed through the working beam, that is, the beam with the maximum energy is recorded for the antenna channel required by each user as its working beam, and beam management is performed.
  • the system further includes a beam weighting module 8, configured to perform pre-weighting processing on the working beam and send it to the downlink receiving end.
  • a beam weighting module 8 configured to perform pre-weighting processing on the working beam and send it to the downlink receiving end.
  • the system disclosed in this embodiment on asymmetric uplink and downlink antenna channels, only the ratio of the number of uplink and downlink antenna channels can be used as the number of beam switching times, and the estimated channel recovery of the entire antenna channel channel can be performed, and the recovered channel can be used. All channel estimation parameters are subjected to beam management and downlink pre-weighting processing for downlink transmission. At the same time, the quantization loss of the beam direction caused by the phase shifter position is also solved, which greatly improves the efficiency of beam management. , which can obtain the best beam performance
  • FIG. 9 is a schematic structural diagram of a beam management apparatus based on an uplink and downlink asymmetric communication MIMO system disclosed by an embodiment of the present invention.
  • the beam management device based on the uplink and downlink asymmetric communication MIMO system described in FIG. 9 can be applied to the uplink and downlink asymmetric communication MIMO system, and the application system of the beam management based on the uplink and downlink asymmetric communication MIMO system is implemented in the present invention. Examples are not limited.
  • the apparatus may include:
  • a memory 601 storing executable program code
  • processor 602 coupled to the memory 601;
  • the processor 602 invokes the executable program code stored in the memory 601 to execute the beam management method based on the uplink and downlink asymmetric communication MIMO system described in the first embodiment.
  • An embodiment of the present invention discloses a computer-readable storage medium, which stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute the beam management based on the uplink and downlink asymmetric communication MIMO system described in the first embodiment method.
  • An embodiment of the present invention discloses a computer program product.
  • the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute the first or second embodiment. Described beam management method based on uplink and downlink asymmetric communication MIMO system.
  • modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in a local, or it can be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.
  • Read-Only Memory ROM
  • Random Access Memory Random Access Memory
  • PROM Programmable Read-only Memory
  • EPROM Erasable Programmable Read Only Memory
  • OTPROM One-time Programmable Read-Only Memory
  • EEPROM Electronically Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read -Only Memory
  • the beam management method and system based on the uplink and downlink asymmetric communication MIMO system disclosed by the embodiments of the present invention are only preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention. , rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it is still possible to modify the technical solutions recorded in the foregoing embodiments, or to modify some of them. The technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de gestion de faisceau basé sur un système MIMO de communication asymétrique de liaison montante et de liaison descendante. Le système MIMO de communication asymétrique de liaison montante et de liaison descendante comprend une extrémité d'envoi de liaison montante et une extrémité de réception de liaison descendante qui sont pourvues de canaux d'antenne asymétriques, et une pluralité de déphaseurs sont prévus sur le canal d'antenne de l'extrémité de réception. Le procédé consiste à : déterminer le nombre de temps de commutation de faisceau selon le rapport de canal d'antenne de l'extrémité d'envoi de liaison montante à l'extrémité de réception de liaison descendante ; régler, en fonction du nombre de temps de commutation de faisceau, les phases de tous les déphaseurs prévus sur l'extrémité de réception, et estimer un seul canal d'antenne après chaque réglage pour générer des valeurs d'estimation de canal correspondant à différentes phases ; récupérer les valeurs d'estimation de canal de tous les canaux d'antenne en fonction des valeurs d'estimation de canal correspondant à différentes phases et aux phases de tous les déphaseurs ; et générer un faisceau de travail selon les valeurs d'estimation de canal de tous les canaux d'antenne et un modèle de conception de faisceau prédéfini, et effectuer une gestion de faisceau au moyen du faisceau de travail. Le retard temporel du balayage de faisceau et la consommation de ressources pendant le réglage de déphaseur peuvent être réduits, et l'efficacité de gestion de faisceau peut être améliorée.
PCT/CN2021/136092 2021-03-11 2021-12-07 Procédé et système de gestion de faisceau basés sur un système mimo de communication asymétrique de liaison montante et de liaison descendante WO2022188487A1 (fr)

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CN113938168B (zh) * 2021-12-16 2022-03-04 广东省新一代通信与网络创新研究院 上下行非对称通信mimo系统的劈裂波束管理方法及系统

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