WO2023082258A1 - Procédé et dispositif de détermination de faisceau de transmission - Google Patents

Procédé et dispositif de détermination de faisceau de transmission Download PDF

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Publication number
WO2023082258A1
WO2023082258A1 PCT/CN2021/130673 CN2021130673W WO2023082258A1 WO 2023082258 A1 WO2023082258 A1 WO 2023082258A1 CN 2021130673 W CN2021130673 W CN 2021130673W WO 2023082258 A1 WO2023082258 A1 WO 2023082258A1
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WIPO (PCT)
Prior art keywords
measurement
target
measurement information
transmission
information
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PCT/CN2021/130673
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English (en)
Chinese (zh)
Inventor
张剑坤
汪浩
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华为技术有限公司
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Priority to PCT/CN2021/130673 priority Critical patent/WO2023082258A1/fr
Publication of WO2023082258A1 publication Critical patent/WO2023082258A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication technologies, and in particular to a method and device for determining beam transmission.
  • Millimeter wave has the characteristics of short wavelength and high frequency, which can be applied in the fifth generation (5th generation, 5G) communication system. Compared with low frequencies, the attenuation of millimeter-wave signals in the atmosphere increases sharply, and large-scale antenna arrays are needed to form high-gain directional narrow beams (beams) to compensate for path loss, thereby ensuring communication reliability. Due to the high hardware complexity, the traditional digital beamforming structure cannot be directly applied to the millimeter wave system. Therefore, the millimeter wave introduces the analog beamforming technology and realizes it in the radio frequency front end.
  • the receiver can determine the service beam pair link (BPL) through the beam management strategy.
  • the service beam pair link can correspond to the service beam pair, and the service beam pair can include the service transmit beam and
  • the service receiving beam of the receiving end, the sending end can send the target signal to the service receiving beam of the receiving end through the service transmitting beam.
  • the receiving end includes M receiving beams, and the transmitting end includes N transmitting beams. Both M and N are positive integers.
  • the receiving end can fix one of the M receiving beams, and the receiving beam A beam pair is established with the N transmitting beams in turn, and the receiving beam in the beam pair measures the reference signal of the transmitting beam to obtain the measurement result.
  • the receiving end fixes another receiving beam among the M receiving beams, and establishes a beam pair with the N sending beams sequentially with the other receiving beam.
  • the receiving end can obtain the signal qualities respectively corresponding to the M ⁇ N beam pairs.
  • the receiving end may use the beam pair corresponding to the best signal quality among the M ⁇ N beam pairs as the serving beam pair, and indicate the serving beam pair to the sending end.
  • the receiving end needs to obtain the signal quality corresponding to the M ⁇ N beam pairs respectively before determining the serving beam pair, and the duration of this is about several hundred milliseconds. In this way, when the receiving end indicates the serving beam pair to the sending end, the serving beam pair is no longer the beam pair corresponding to the best signal quality, and the receiving end cannot better implement beam tracking.
  • the present application provides a method and device for determining a transmission beam, which is used for a receiving end to determine a beam pair with better signal quality as a serving beam pair, which helps the receiving end to achieve better beam tracking.
  • the present application provides a method for determining beam transmission, which can be performed by the receiving end, where the receiving end can be a terminal or a wireless access network device, or it can also be a module in the terminal such as a chip, or it can also be It is a module such as a chip in a wireless access network device.
  • the first measurement information is acquired, and the first measurement information is obtained by measuring reference signals from N transmit beams through the first receive beam in the first measurement period, and the first measurement information is obtained by using To determine the target measurement information corresponding to the first receiving beam at the target time, the target time is after the first measurement period, and N is a positive integer; according to the target measurement information, send indication information, wherein the indication information can be used to indicate K target transmission Beams, the K target transmission beams are determined according to the ordering of signal quality corresponding to the N transmission beams at the target time, K is a positive integer and less than or equal to N.
  • the receiving end can obtain the first measurement information, which is the measurement information corresponding to the optimal receiving beam of the receiving end, and the receiving end can predict the measurement information corresponding to the future time (ie, the target time) according to the first measurement information , that is, the measurement information corresponding to the target time is predicted by the measurement information corresponding to the optimal receiving beam.
  • the receiving end can better determine the beam pair with the best signal quality corresponding to the target time as the serving beam pair. It helps the receiving end to achieve better beam tracking, which in turn helps to reduce the risk of link disconnection.
  • the first measurement information is used to determine the target measurement information corresponding to the first receiving beam at the target moment, including: determining the first launch angle according to the first measurement information; wherein, in the first measurement period Among them, the signal quality corresponding to the first emission angle is the highest; according to the first measurement information and the first emission angle, the target measurement information is determined.
  • the receiving end determines the first emission angle corresponding to the optimal receiving beam according to the first measurement information, wherein the first emission angle can be understood as the optimal emission angle that can be measured by the optimal receiving beam, so that the receiving end can A measurement information and an optimal launch angle to predict target measurement information.
  • the receiving end can predict the target measurement information through the optimal launch angle, which helps to improve the accuracy of the target measurement information.
  • determining the first launch angle according to the first measurement information includes: determining the first launch angle according to the first measurement information and a beam information set; wherein, the beam information set includes N transmit beams One or more of the corresponding N emission angles and the relative positional relationship between any two emission beams among the N emission beams.
  • the method further includes: receiving beam information of the first beam transmission, where the beam information of the first transmission beam includes the transmission angle of the first transmission beam, the distance between the first transmission beam and the second transmission beam One or more items in the relative position relationship, the first transmission beam is one of the N transmission beams, and the second transmission beam is one or more transmission beams adjacent to the first transmission beam among the N transmission beams; or , receiving beam information set.
  • the receiving end is based on the first measurement information, and one of the N transmission angles corresponding to the N transmission beams included in the beam information set, and the relative positional relationship between any two transmission beams in the N transmission beams
  • One or more items are used to determine the first launch angle, thus providing at least three implementations for the receiving end to determine the first launch angle.
  • the receiving end determines the first emission angle by using the first measurement information and the N emission angles corresponding to the N emission beams, which helps to determine the first emission angle more accurately.
  • acquiring the first measurement information includes: in the second measurement period, measuring the reference signal through the second receiving beam to obtain the second measurement information; acquiring the M-1 measurement information before the second measurement period
  • the second measurement information and the measurement information corresponding to the M-1 measurement cycles are composed of M measurement information
  • the measurement information corresponding to any one of the M-1 measurement cycles is the measurement information corresponding to the measurement cycle
  • the receiving beam is obtained by measuring the reference signal; the first measurement information is selected from M pieces of measurement information, wherein, among the M signal qualities corresponding to the M receiving beams indicated by the M pieces of measurement information, the first receiving beam measures The corresponding signal quality is the highest.
  • the receiving end after the receiving end measures the reference signal in the second measurement period (that is, the current measurement period) to obtain the second measurement information, the receiving end can form M according to the second measurement information and the measurement information corresponding to M-1 measurement periods measurement information, wherein the M measurement information corresponds to the M receiving beams of the receiving end, and then the receiving end can determine the first measurement information with the best signal quality from the M measuring information, that is, the measurement corresponding to the optimal receiving beam information.
  • determining the target measurement information according to the first measurement information and the first launch angle includes: predicting the target launch angle at the target time according to the first launch angle, and the target time and the end of the first measurement period The time difference is the first time delay; according to the target launch angle and the first measurement information, the target measurement information is determined; wherein, the first time delay includes one or more of cycle time delay and processing time delay, and the cycle time delay includes L measurement periods, L is determined according to the first measurement period and the second measurement period, and L is a positive integer.
  • the receiving end can fully consider the time delay between the target moment and the end moment of the first measurement period, so that the target measurement information can be accurately predicted, and the service beam pair can be obtained more accurately, which helps to achieve a better beam tracking, thereby helping to reduce the risk of broken links.
  • the target measurement information includes the measurement information of n transmission beams, and the n transmission beams are determined according to the relative positional relationship between the historical optimal transmission beam and other transmission beams among the N transmission beams
  • the best transmission beam in history is the transmission beam corresponding to the highest signal quality among the N transmission beams before the first measurement period, where n is a positive integer and less than or equal to N.
  • the transmitting end includes N transmission beams
  • the receiving end determines n transmission beams according to the relative positional relationship between the historical optimal transmission beam and other transmission beams among the N transmission beams of the transmission end, and then predicts n transmission beams.
  • the target measurement information is reference signal received power (reference signal received power, RSRP); according to the target measurement information, sending indication information, including: selecting the target measurement information, RSRP sorting from large to small
  • the first K RSRPs, the first K RSRPs correspond to the K target transmission beams; the indication information of the K target transmission beams is sent, and the indication information of the target transmission beams includes the RSRP corresponding to the target transmission beams and the identification of the transmission beams.
  • the target measurement information can be RSRP
  • the receiving end and the sending end can be a terminal and an access network device respectively.
  • the terminal can determine a serving beam pair through this solution, and obtain a larger gain.
  • the embodiment of the present application provides a communication device, which has the function of realizing the above-mentioned first aspect or any possible implementation of the first aspect.
  • the device may be a receiving end, and the receiving end may be a terminal , or a chip included in the terminal, and the receiving end may also be a radio access network device, or a chip included in the radio access network device.
  • the above-mentioned functions of the communication device may be realized by hardware, or may be realized by executing corresponding software by hardware, and the hardware or software includes one or more modules or units or means (means) corresponding to the above-mentioned functions.
  • the structure of the device includes a processing module and a transceiver module, where the processing module is configured to support the device to execute the functions in the first aspect or any implementation manner of the first aspect.
  • the transceiver module is used to support the communication between the device and other communication devices, for example, when the device is a terminal, it can receive the beam information set from the wireless access network device.
  • the communication device may also include a storage module, which is coupled to the processing module and stores necessary program instructions and data of the device.
  • the processing module may be a processor
  • the transceiving module may be a transceiver
  • the storage module may be a memory
  • the memory may be integrated with the processor, or may be configured separately from the processor.
  • the structure of the apparatus includes a processor, and may further include a memory.
  • the processor is coupled with the memory, and can be used to execute the computer program instructions stored in the memory, so that the device executes the method in the above first aspect or any possible implementation manner of the first aspect.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver or an input/output interface; when the device is a chip included in the terminal, the communication interface may be an input/output interface of the chip.
  • the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.
  • the embodiment of the present application provides a chip system, including: a processor and a memory, the processor and the memory are coupled, the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the chip system realizes The above first aspect or the method in any possible implementation manner of the first aspect.
  • the chip system further includes an interface circuit for exchanging code instructions to the processor.
  • processors in the chip system, and the processors may be implemented by hardware or by software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor implemented by reading software codes stored in a memory.
  • the memory can be integrated with the processor, or can be set separately from the processor.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be respectively disposed on different chips.
  • an embodiment of the present application provides a computer-readable storage medium on which a computer program or instruction is stored, and when the computer program or instruction is executed, the computer executes any one of the above-mentioned first aspect or the first aspect. method in one possible implementation.
  • the embodiment of the present application provides a computer program product, which enables the computer to execute the method in the above first aspect or any possible implementation manner of the first aspect when the computer reads and executes the computer program product.
  • the embodiment of the present application provides a communication system, and the communication system may include a sending end and a receiving end.
  • the receiving end may be configured to execute the method in the foregoing first aspect or any possible implementation manner of the first aspect.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by the present application.
  • FIG. 2 is a schematic diagram of a transmitting and receiving beam provided by the present application
  • FIG. 3 is a schematic flow diagram of determining a serving beam pair provided by the present application.
  • FIG. 4 is a schematic flow diagram of a method for determining beam transmission provided by the present application.
  • FIG. 5 is a timing diagram provided by the present application.
  • FIG. 6 is a schematic flowchart of a terminal prediction target measurement information provided by the present application.
  • FIG. 7 is a schematic flow diagram of a terminal determining a launch angle provided by the present application.
  • FIG. 8 is a schematic diagram of a beam neighborhood relationship provided by the present application.
  • FIG. 9 is a schematic diagram of the format of a TCI state provided by the present application.
  • FIG. 10 is a schematic diagram of the format of another TCI state provided by the present application.
  • FIG. 11 is a schematic diagram of a predicted launch angle of a target provided by the present application.
  • FIG. 12 is a schematic structural diagram of a communication device provided by the present application.
  • FIG. 13 is a schematic structural diagram of another communication device provided by the present application.
  • FIG. 1 is a schematic structural diagram of a communication system 1000 applied in an embodiment of the present application.
  • the communication system includes a radio access network 100 and a core network 200 , and optionally, the communication system 1000 may also include the Internet 300 .
  • the radio access network 100 may include at least one radio access network device (such as 110a and 110b in FIG. 1 ), and may also include at least one terminal (such as 120a-120j in FIG. 1 ).
  • the terminal is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network in a wireless or wired manner.
  • the core network equipment and the wireless access network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the wireless access network equipment can be integrated on the same physical equipment, or it can be a physical equipment It integrates some functions of core network equipment and some functions of wireless access network equipment. Terminals and wireless access network devices may be connected to each other in a wired or wireless manner.
  • FIG. 1 is only a schematic diagram.
  • the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1 .
  • the wireless access network equipment can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), and a next-generation mobile communication system in the fifth generation (5th generation, 5G) Base station (next generation NodeB, gNB), the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the wireless fidelity (wireless fidelity, WiFi) system etc.; it can also be a module or unit that completes some functions of the base station, for example, it can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU).
  • base station base station
  • evolved NodeB, eNodeB evolved NodeB
  • TRP transmission reception point
  • TRP transmission reception point
  • the CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and also completes the function of the service data adaptation protocol (SDAP); the DU completes the functions of the base station
  • the functions of the radio link control layer and the medium access control (medium access control, MAC) layer can also complete the functions of part of the physical layer or all of the physical layer.
  • 3rd generation partnership project, 3GPP third generation partnership project
  • the radio access network device may be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), or a relay node or a donor node.
  • the embodiment of the present application does not limit the specific technology and specific equipment form adopted by the radio access network equipment.
  • a base station is used as an example of a radio access network device for description below.
  • a terminal may also be called terminal equipment, user equipment (user equipment, UE), mobile station, mobile terminal, and so on.
  • Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things ( internet of things, IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, etc.
  • Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal.
  • Base stations and terminals can be fixed or mobile. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the base station and the terminal.
  • the communication between the base station and the terminal, between the base station and the base station, and between the terminal and the terminal can be carried out through the licensed spectrum, the communication can also be carried out through the unlicensed spectrum, and the communication can also be carried out through the licensed spectrum and the unlicensed spectrum at the same time; Communications may be performed on frequency spectrums below megahertz (gigahertz, GHz), or communications may be performed on frequency spectrums above 6 GHz, or communications may be performed using both frequency spectrums below 6 GHz and frequency spectrums above 6 GHz.
  • the embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.
  • the functions of the base station may also be performed by modules (such as chips) in the base station, or may be performed by a control subsystem including the functions of the base station.
  • the control subsystem including base station functions here may be the control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city.
  • the functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or may be performed by a device including the terminal function.
  • the communication system shown in FIG. 1 includes a sending end and a receiving end, where the sending end can send signals/information to the receiving end.
  • the transmitting end may include one or more transmitting beams
  • the receiving end may include one or more receiving beams.
  • the transmitting end and the receiving end are base stations and terminals respectively, wherein the transmitting end (i.e. base station) may include 64 transmission beams (which may be represented as transmission beam 0 to transmission beam 63), 64 transmission beams Each of the transmit beams may correspond to its own transmit angle.
  • the receiving end (that is, the terminal) may include 4 receiving beams (represented as receiving beam 0 to receiving beam 3), and each of the 4 receiving beams may correspond to its own receiving angle.
  • the 5G NR system introduces a higher frequency FR2 band.
  • the frequency range of the FR2 band is 24.25GHz-52.6GHz.
  • the FR2 band can also be called millimeter wave (mmWave). Combining mmWave with analog beamforming can better realize the signal transmission between the transmitter and receiver.
  • the receiving end can determine the service beam pair through the beam management strategy.
  • the service beam pair includes the service sending beam of the sending end and the service receiving beam of the receiving end.
  • the sending end can send target signals to the service receiving beam of the receiving end through the service sending beam.
  • the receiving end such as mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, plane, ship, robot, mechanical arm, smart home equipment, etc.
  • the receiving end needs to determine the serving beam pair as accurately as possible according to the beam management strategy, so as to improve the signal quality of the target signal received by the receiving end from the sending end.
  • the sending end and the receiving end may be the base station and the terminal in FIG. 2 respectively, and the base station may include sending beams 0 to Transmitting beam 63, the terminal may include receiving beam 0 to receiving beam 3.
  • any one of receiving beams 0 to 3 can form a beam pair with transmitting beam 0 to transmitting beam 63 respectively, that is, the receiving beam in the terminal and the transmitting beam in the base station can form 256 beam pairs ( may be referred to as a set of beam pairs).
  • the base station sends a reference signal to the terminal, wherein the reference signal may specifically be a downlink reference signal, such as a synchronization signal block (synchronization signal block, SSB), a channel state information reference signal (channel state information-reference signal, CSI-RS) .
  • a synchronization signal block synchronization signal block, SSB
  • a channel state information reference signal channel state information-reference signal, CSI-RS
  • Step 302 the terminal measures the reference signal from the base station, and determines measurement information according to the reference signal.
  • the terminal can first fix the receiving beam 0, and form the receiving beam 0 and the transmitting beam 0 into a beam pair, measure the reference signal sent by the transmitting beam 0 through the receiving beam 0, and obtain the corresponding measurement value of (receiving beam 0, transmitting beam 0), and the measured value It can be used to indicate the channel quality between receiving beam 0 and transmitting beam 0. Further, the terminal may form the receiving beam 0 and the transmitting beam 1 into a beam pair to obtain the measurement value corresponding to (receiving beam 0, transmitting beam 1).
  • the terminal can obtain the measured values corresponding to (receiving beam 0, transmitting beam 0), (receiving beam 0, transmitting beam 1), ..., (receiving beam 0, transmitting beam 63) respectively (a total of 64 measured values),
  • the 64 measured values may form the measurement information corresponding to receiving beam 0.
  • the period in which the receiving end sequentially measures the reference signals sent by all transmitting beams through a receiving beam may be referred to as a measurement period, or a transmitting period, or a scanning period of transmitting beams, etc.
  • the terminal sequentially measures the period of the reference signal sent by the transmitting beam 0 to the transmitting beam 63 through the receiving beam 0, which is a measurement cycle.
  • the terminal can continue to measure the reference signals in the order of receiving beam 0, receiving beam 1, receiving beam 2, and receiving beam 3 (receiving beam 3 and then returning to receiving beam 0), and so on.
  • the beam measures the reference signal sent by the base station through the transmit beam to obtain measurement information corresponding to the receive beam.
  • the measurement information corresponding to multiple receiving beams of the terminal can form a measurement information set.
  • the receiving beams Measurement information respectively corresponding to receiving beam 0, receiving beam 1, receiving beam 2, and receiving beam 3 constitutes a measurement information set.
  • Step 303 the terminal determines a candidate beam pair according to the measurement information.
  • the terminal after the terminal determines the measurement information based on the current measurement period, it can obtain the receiving beam corresponding to the current measurement period according to the measurement sequence of multiple receiving beams in the terminal and the receiving beam corresponding to the current measurement period The measurement information corresponding to the other previous received beams, and form the measurement information into a measurement information set.
  • the terminal obtains the measurement information corresponding to the receiving beam 0 by measuring the reference signal of the receiving beam 0, and the terminal can continue to obtain the measurement information corresponding to the receiving beam 0, that is, the receiving beam 3, the receiving beam 2, and the receiving beam 1 respectively. , compose these measurement information into a measurement information set.
  • the terminal can select a beam pair whose signal quality meets the requirements from the beam pair set according to the measurement information set as a candidate beam pair.
  • the candidate beam pair may be the beam pair with the best signal quality in the measurement information set.
  • Step 304 the terminal sends the identification and measurement value of the candidate beam pair to the base station.
  • the identification of the candidate beam pair may be used to indicate the transmitting beam and the receiving beam in the candidate beam pair, where the identification of the candidate beam pair may include the identification of the transmitting beam and the identification of the receiving beam in the candidate beam pair.
  • the candidate beam pair is (receiving beam 1, transmitting beam 1), then the identification of the candidate beam pair may include the identification of receiving beam 1 and the identification of transmitting beam 1.
  • Step 305 the base station determines the serving beam pair according to the identifier and the measurement value of the candidate beam pair.
  • the serving beam pair is a beam pair used for transmitting target signals between the base station and the terminal.
  • the base station may determine the serving beam pair corresponding to the current measurement period and used to transmit the target signal according to the identification and measurement value of the candidate beam pair, combined with the serving beam pair corresponding to the previous measurement period.
  • the serving beam pair may be the same as or different from the candidate beam pair; when there are multiple candidate beam pairs, the serving beam pair may be one of multiple candidate beam pairs, or It may also not be included in the plurality of candidate beam pairs.
  • the base station may switch the serving transmission beam used for transmitting the target signal based on the determined serving beam pair.
  • Step 306 the base station sends the identification of the serving beam pair to the terminal.
  • the base station may send a medium access control layer control element (medium access control-control element, MAC-CE) to the terminal, the MAC-CE includes the identifier of the serving beam pair, and the MAC-CE may be used to instruct the terminal to switch the receiving
  • the received beam after switching ie, the serving receiving beam
  • the serving receiving beam can be used by the terminal to receive the target signal sent by the serving sending beam from the base station.
  • Step 307 the base station sends the target signal to the terminal.
  • the terminal selects the candidate beam pair according to the measurement information set, there may be a problem of inaccurate selection.
  • the terminal composes the measurement information corresponding to receiving beam 0 and the measurement information corresponding to receiving beam 0 before receiving beam 0, that is, corresponding to receiving beam 3, receiving beam 2, and receiving beam 1 respectively, into a measurement information set, and selects in the measurement information set
  • the selected candidate beam pair is (receiving beam 1, transmitting beam 1).
  • the beam pair whose signal quality meets the requirements may be (receiving beam 1, transmitting beam 2).
  • the terminal cannot measure the signal quality corresponding to (receiving beam 1, transmitting beam 2), that is, it cannot determine the candidate beam pair (receiving beam 1, transmitting beam 2). Beam 1, Beam 2). Only after polling the (receiving beam 1, transmitting beam 2) again, the terminal can select the candidate beam pair (receiving beam 1, transmitting beam 2) from the corresponding measurement information set.
  • the present application provides a method for determining the transmission beam, which can be executed by the sending end and the receiving end.
  • the sending end and the receiving end may be the base station and the terminal in Figure 1 or Figure 2 respectively, and correspondingly, the base station may send a downlink signal to the terminal, wherein the downlink signal may be a physical downlink control channel (PDCCH) ), one or more of downlink shared physical channel (physical downlink shared channel, PDSCH) or downlink reference signal (such as SSB, CSI-RS).
  • the downlink signal may be a physical downlink control channel (PDCCH)
  • PDCCH physical downlink control channel
  • PDSCH physical downlink shared physical channel
  • CSI-RS downlink reference signal
  • the transmitting end and the receiving end can also be the terminal and the base station in FIG. 1 respectively.
  • the terminal can send an uplink signal to the base station, wherein the uplink signal can be a physical uplink control channel (physical uplink control channel, PUCCH), a physical uplink shared channel One or more of (physical uplink shared channel, PUSCH) or uplink reference signal (such as listening reference signal (sounding reference signal, SRS)).
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • uplink reference signal such as listening reference signal (sounding reference signal, SRS)
  • the sending end and the receiving end may also be the two terminals in FIG. 1 (which may be referred to as terminal 1 and terminal 2), and terminal 1 may send a sidelink signal to terminal 2, wherein the sidelink signal may be a physical sidelink control Channel (physical sidelink control channel, PSCCH), physical sidelink shared channel (physical sidelink shared channel, PSSCH) or sidelink reference signal (such as CSI-RS, phase tracking reference signal (phase tracking reference signal, PT-RS) , demodulation reference signal (demodulation reference signal, DM-RS), etc.) in one or more.
  • the sidelink signal may be a physical sidelink control Channel (physical sidelink control channel, PSCCH), physical sidelink shared channel (physical sidelink shared channel, PSSCH) or sidelink reference signal (such as CSI-RS, phase tracking reference signal (phase tracking reference signal, PT-RS) , demodulation reference signal (demodulation reference signal, DM-RS), etc.) in one or more.
  • the sidelink signal may be a physical sidelink control Channel (physical
  • the sending end and the receiving end are respectively referred to as the base station and the terminal for illustration.
  • the transmitting beam of the base station can be referred to as the transmitting beam for short
  • the receiving beam of the terminal can be referred to as the receiving beam for short. beam.
  • Step 401 the terminal acquires first measurement information.
  • the first measurement information is obtained by the terminal in the first measurement period by measuring the reference signals from the N transmission beams through the first reception beam, and the first measurement information is used to indicate the target corresponding to the first reception beam at the target moment
  • the target time is after the first measurement period.
  • the base station may send a reference signal, such as SSB or CSI-RS, to the terminal.
  • a reference signal such as SSB or CSI-RS
  • the base station may include N transmission beams, where N is a positive integer, and the base station may sequentially transmit reference signals to the terminal through the N transmission beams in a preset order, and the N transmission beams may correspond to a measurement cycle.
  • the terminal may include M receiving beams, where the M receiving beams correspond to M measurement periods, and M is a positive integer.
  • the terminal may respectively measure the reference signals sent by the N transmission beams through the reception beam corresponding to the measurement period, and obtain the measurement information corresponding to the measurement period.
  • the terminal can obtain M pieces of measurement information respectively corresponding to M measurement periods, and the M pieces of measurement information can form a measurement information set, and the measurement information set can correspond to a measurement period set, that is, a measurement period set includes M a measurement cycle.
  • Table 1 is an example of a correspondence between terminal measurement reference signals provided in this application.
  • the terminal measures the reference signals of 64 transmit beams through receive beam 0, and obtains the measurement information 0 corresponding to receive beam 0; in T1, the terminal measures the reference signals of 64 transmit beams through receive beam 1 , to obtain the measurement information 1 corresponding to the receiving beam 1; in T2, the terminal measures the reference signals of 64 transmitting beams through the receiving beam 2, and obtains the measurement information 2 corresponding to the receiving beam 2; in T3, the terminal measures 64 through the receiving beam 3
  • the reference signal of each transmit beam is used to obtain the measurement information 3 corresponding to the receive beam 3.
  • the terminal can obtain the measurement information of the 4 receiving beams in the 4 measurement periods respectively, where the measurement periods T0 to T3 can together form a set of measurement periods, measurement information 0, measurement information 1, measurement information 2 and measurement information 3 can together form a measurement information set.
  • Measurement cycle receiving beam 64 beams measurement information T0 Receiving beam 0 Transmit beam 0 to transmit beam 63 Measurement information 0 T1 Receiving beam 1 Transmit beam 0 to transmit beam 63 Measurement information 1 T2 Receiving Beam 2 Transmit beam 0 to transmit beam 63 Measurement information 2 T3 Receiving Beam 3 Transmit beam 0 to transmit beam 63 Measurement information 3
  • the terminal can measure the reference signal cyclically, that is, after T3, the terminal can also measure the reference signals of 64 transmit beams through the receive beam 0 in T4, and obtain the measurement information 4 corresponding to the receive beam 0; and in T5, The reference signals of 64 transmit beams are measured by the receive beam 1 to obtain the measurement information 5 corresponding to the receive beam 1, and so on.
  • Table 2 is another kind of correspondence relationship of terminal measurement reference signals provided in the present application as an example.
  • T0 to T3 can be considered as a set of measurement periods, but also T1 to T4, or T2 to T5 can be considered as a set of measurement periods. It can be understood that 4 consecutive measurement periods can form a set of measurement periods , and the 4 pieces of measurement information corresponding to the 4 consecutive measurement periods form a set of measurement information.
  • Measurement cycle receiving beam 64 beams measurement information T0 Receiving beam 0 Transmit beam 0 to transmit beam 63 Measurement information 0 T1 Receiving beam 1 Transmit beam 0 to transmit beam 63 Measurement Information 1 T2 Receiving Beam 2 Transmit beam 0 to transmit beam 63 Measurement information 2 T3 Receiving Beam 3 Transmit beam 0 to transmit beam 63 Measurement information 3 T4 Receiving beam 0 Transmit beam 0 to transmit beam 63 Measurement Information 4 T5 Receiving beam 1 Transmit beam 0 to transmit beam 63 Measurement information 5 T6 Receiving Beam 2 Transmit beam 0 to transmit beam 63 Measurement Information 6 T7 Receiving Beam 3 Transmit beam 0 to transmit beam 63 Measurement Information 7 ... ... ... ... ...
  • the terminal can measure the reference signals of the N transmitting beams through the receiving beam, and obtain the measurement values corresponding to the N transmitting beams respectively, where the measured values are, for example, the reference signal received power (reference signal received power, RSRP) or signal-to-noise ratio (signal noise ratio, SNR), etc.
  • the terminal may determine the measurement information of the receiving beam according to the measurement values respectively corresponding to the N transmitting beams.
  • the terminal may use the measurement values corresponding to the N transmission beams as the measurement information of the reception beam, that is, the measurement information of the reception beam may include the measurement values corresponding to the N transmission beams.
  • the terminal may determine one or more of the average value, maximum value, minimum value, and median value of the measurement values respectively corresponding to the N transmitting beams, as the measurement information of the receiving beam.
  • the terminal may acquire the first measurement information according to M pieces of measurement information (that is, a set of measurement information).
  • M pieces of measurement information may be used to characterize the signal quality of the reference signal received by the receiving beam, or to characterize the channel quality between the corresponding receiving beam and the base station.
  • the terminal may determine, according to the M pieces of measurement information, the measurement information indicating the best signal quality as the first measurement information.
  • the receiving beam corresponding to the first measurement information may be referred to as the first receiving beam
  • the measurement period corresponding to the first measurement information may be referred to as the first measurement period.
  • the terminal may determine one or more of the average value, maximum value, minimum value, and median value of the N measurement values according to the N measurement values, as the evaluation index corresponding to the measurement information. Furthermore, the terminal may determine the first measurement information according to the evaluation indicators respectively corresponding to the M pieces of measurement information. With reference to the example in Table 1, the terminal acquires measurement information 0, measurement information 1, measurement information 2, and measurement information 3, where each measurement information may include 64 measurement values, and the terminal may determine the measurement information for each measurement information The average value of the 64 measured values is used as the evaluation index of the measurement information.
  • the terminal determines the first measurement information according to the average values corresponding to the four measurement information, for example, the average value corresponding to the measurement information 1 is the largest among the average values corresponding to the four measurement information, then the measurement information 1 is the first measurement information. measurement information.
  • the terminal may predict the target measurement information at the target moment according to the first measurement information.
  • the target time may specifically be the time when the base station sends the target signal to the terminal.
  • the target time may be a first time delay difference from the end time of the first measurement period.
  • the first latency may include one or more of processing latency and cycle latency.
  • the processing delay may specifically include one or more of the terminal processing delay and the base station processing delay, where the terminal processing delay may be that in the method embodiment in FIG. 3 above, the terminal determines the candidate beam pair according to the measurement information set, and The delay caused by reporting the identification of the candidate beam pair to the base station, and the terminal processing delay may be related to terminal capabilities and protocol regulations.
  • the processing delay of the base station may be that in the above-mentioned embodiment of the method in FIG.
  • the time delay caused by notifying the identification to the terminal, and the processing time delay of the base station may be related to the base station capability and protocol regulations.
  • the period delay may include L measurement periods, the value of L may be determined by the terminal according to the first measurement period and the second measurement period, and L is a positive integer.
  • the terminal determines the first measurement information from the M pieces of measurement information
  • the M pieces of measurement information, the M pieces of measurement periods, and the M pieces of receiving beams all have a one-to-one correspondence.
  • the measurement period T0, received beam 0, and measurement information 0 correspond to each other
  • the measurement period T1, received beam 1, and measurement information 1 correspond to each other.
  • the terminal measures the reference signal of the base station through the second receiving beam in the second measurement period.
  • the second measurement period can be understood as the measurement period in which the terminal currently measures the reference signal.
  • the second measurement period can also be called the current measurement period.
  • the second receiving beam is the receiving beam corresponding to the measurement period in which the terminal currently measures the reference signal.
  • the terminal may acquire the measurement information respectively corresponding to the M-1 measurement periods before the second measurement period, so as to form M measurement information (that is, a set of measurement information), Then the terminal selects first measurement information from the M pieces of measurement information.
  • the first measurement period may be the same as or different from the second measurement period, and correspondingly, the first receiving beam may be the same as or different from the second receiving beam.
  • the terminal obtains measurement information 4 in T4, and then the terminal obtains the measurement information corresponding to the three measurement cycles (ie, T1, T2, T3) before T4, respectively.
  • the terminal can determine the first measurement information according to the measurement information 1, measurement information 2, measurement information 3, and measurement information 4. For example, if the first measurement information is measurement information 4, then the first measurement period is T4, and the first measurement period and the second measurement period The measurement period is the same, and the first receiving beam is the same as the second receiving beam.
  • the first time delay may not include the cycle time delay, that is, the first time delay includes the processing time delay, and the difference between the target time and the end time of the first measurement period is the processing time delay .
  • the second measurement cycle is T4, and the terminal obtains measurement information 4 in T4, and then the terminal can determine the first measurement information according to measurement information 1, measurement information 2, measurement information 3, and measurement information 4, such as the first measurement information If the measurement information is measurement information 1, then the first measurement period is T1.
  • the first measurement period is different from the second measurement period, and the first receiving beam is different from the second receiving beam.
  • the period delay difference between the first measurement period and the second measurement period includes 3 measurement periods ( T2 , T3 and T4 ). That is, there is a first time delay between the target moment and the end time of the first measurement period, and the first time delay may specifically include a processing time delay and three measurement periods.
  • the period delay is determined by the terminal according to the second measurement period and the first measurement period.
  • the terminal determines the period delay according to the end moment of the second measurement period and the end moment of the first measurement period, for example, the terminal uses the difference between the end moment of the second measurement period and the end moment of the first measurement period as the period time delay.
  • the terminal determines the period delay according to the start time of the second measurement period and the start time of the first measurement period, for example, the terminal uses the difference between the start time of the second measurement period and the start time of the first measurement period as the period delay.
  • the present application can also use other implementation manners to enable the terminal to determine the period delay according to the first measurement period and the second measurement period, and no more examples are given here.
  • the terminal can predict the measurement information at the target time according to the first measurement information and the first delay, which can be specifically described in conjunction with the schematic flow chart of the terminal predicting target measurement information shown in FIG. 6 .
  • Step 601 the terminal determines a first launch angle according to the first measurement information and the first time delay.
  • the N transmission beams of the base station may respectively have respective transmission angles
  • the transmission angle of the transmission beam is the angle of departure (angle of departure, AoD) at which the base station transmits a signal to the terminal through the transmission beam, that is, the N transmission beams of the base station
  • the transmit beams correspond to N transmit angles.
  • the identification of the N transmission beams can be expressed as #0, #1, ..., #N-1 respectively
  • the N emission angles corresponding to the N transmission beams can be expressed as ⁇ 0 , ⁇ 1 , ... , ⁇ N-1 .
  • #0 corresponds to the emission angle ⁇ 0 , that is, the emission angle of the transmission beam 0 is ⁇ 0
  • #1 corresponds to the emission angle ⁇ 1 , that is, the emission angle of the transmission beam 1 is ⁇ 1 , and so on.
  • the launch angle can further include elevation and azimuth, where the elevation is the angle between the launch direction line and the horizontal plane, and the azimuth is the direction from the north direction line of a certain point, clockwise to Horizontal angle between emission directions.
  • the emission angle ⁇ 0 includes the altitude angle 0° and the azimuth angle 7°
  • the ⁇ 1 includes the altitude angle -7° and the azimuth angle 7°. It can also be understood that each transmitting beam may have its own elevation angle and azimuth angle.
  • the signal quality corresponding to the first emission angle is the highest.
  • the first emission angle is the optimal emission angle for the base station to transmit signals determined by the terminal according to the first measurement information, and the first emission angle may be N One of the emission angles, or in the interval of two adjacent emission angles.
  • the first launch angle can be equal to a certain value in the N launch angles, such as the first launch angle is equal to ⁇ 31 ; the first launch angle can also be located in the interval between certain two adjacent launch angles, such as The first emission angle is between ⁇ 31 and ⁇ 32 .
  • the highest signal quality may also be referred to as the best signal quality.
  • the terminal may preset a first model, where the first model is obtained through training based on historical data, and the historical data includes a plurality of measurement information and an optimal launch angle corresponding to each measurement information.
  • the signal quality corresponding to the optimal emission angle is better than or equal to the signal quality corresponding to the N emission angles of the base station.
  • the terminal may input the first measurement information into the first model, so that the first model outputs an optimal launch angle corresponding to the first measurement information (ie, the first launch angle).
  • the terminal may determine the first launch angle according to the first measurement information and the beam information set.
  • FIG. 7 exemplarily showing a schematic flow diagram of a terminal determining a launch angle:
  • Step 701 the terminal acquires a beam information set.
  • the beam information set is first explained as follows:
  • the beam information set may include beam information of N transmission beams, and the beam information of the transmission beam may include one or more of the transmission angle of the transmission beam and the relative positional relationship between the transmission beam and other transmission beams.
  • the beam information set may include one or more items of the N transmission angles corresponding to the N transmission beams and the beam neighborhood relationship, where the beam neighborhood relationship can be used to indicate any of the N transmission beams The relative positional relationship between the two transmission beams, or may be used to indicate the adjacent transmission beams of any one of the N transmission beams.
  • the adjacent transmission beams of the transmission beam may include a transmission beam on the left of the transmission beam, a transmission beam on the right, an upper transmission beam, and a lower transmission beam.
  • Sending beams (a total of 4 sending beams).
  • Figure 8 is a schematic diagram of a beam neighborhood relationship provided by the present application. According to the order of left, right, up and down, the adjacent beams of beam 17 are respectively beam 16, beam 18, beam 18, and beam 17. 1.
  • Send beam 33 Alternatively, a beam located at the upper left of the beam, a beam at the upper right, a beam at the lower left, and a beam at the lower right (a total of 8 beams) can be added as the beam adjacent beams.
  • the adjacent beams of transmitting beam 17 are respectively transmitting beam 16, transmitting beam 18, transmitting beam 1, transmitting beam 33. Sending beam 0, sending beam 2, sending beam 32, and sending beam 34.
  • the adjacent transmission beams of the transmission beams may also be determined according to other forms.
  • the beam information set may be indicated to the terminal by the base station.
  • the following example provides two ways for the base station to indicate the beam information set to the terminal, wherein the first way may be that the terminal receives the beam information set; the second way may be that the terminal receives the beam information for the first transmitted beam. The two methods are explained in detail as follows:
  • Mode 1 The terminal receives the beam information set.
  • the beam information set includes N emission angles.
  • the beam information set includes an identifier of each transmission beam among the N transmission beams and a corresponding transmission angle.
  • the beam information set includes the identifier #0 and the emission angle ⁇ 0 , the identifier #1 and the emission angle ⁇ 1 and so on.
  • each emission angle may include an elevation angle and an azimuth angle, and it can also be understood that the beam information set includes an identification of each emission beam among the N emission beams and a corresponding elevation angle and azimuth angle.
  • the beam information set includes identification #0, elevation angle 0° and azimuth angle 7°, identification #1, elevation angle -7° and azimuth angle 7°, etc.
  • the beam information set includes the emission angles of each of the N transmission beams, the N transmission angles are arranged in the order of the identifications of the N transmission beams, and the terminal can N launch angles, determine the corresponding relationship between launch angles and transmit beams.
  • the N emission angles arranged in order in the beam information set are specifically ⁇ 0 , ⁇ 1 , ⁇ 2 , ..., ⁇ N-1 , then the terminal can determine the first emission angle in the beam information set (ie ⁇ 0 ) is the emission angle corresponding to the transmission beam 0, and the second emission angle (ie ⁇ 1 ) is the emission angle corresponding to the transmission beam 1, etc.
  • the beam information set includes beam neighborhood relations.
  • the beam information set includes an identifier of each transmission beam and identifiers of adjacent transmission beams of the transmission beam.
  • the beam information set provided by this application can refer to Table 5.
  • the identification of transmission beam 1 is #1
  • the identification of adjacent transmission beams corresponding to transmission beam 1 follows the left
  • the order of right, up, down, upper left, upper right, lower left, and lower right is #0, #2, -, #17, -, -, #16, #18, where "-" can be expressed as being in the corresponding position There are no adjacent transmit beams.
  • the beam information set includes N emission angles and beam neighborhood relationships.
  • N emission angles and beam neighborhood relationships may be carried in the same message, or carried in different messages.
  • the terminal may receive the beam information set from the base station before or after measuring the reference signals of the N transmission beams (that is, all transmission beams) of the base station through the first reception beam.
  • the terminal may also receive the beam information set from the base station while the first receiving beam is measuring the reference signal of any one of the N transmitting beams of the base station.
  • the terminal may receive the beam information set from the base station when accessing the cell.
  • the base station may broadcast the beam information set, and correspondingly, when the terminal accesses the cell, the terminal may receive the beam information set broadcast by the base station.
  • the terminal sends an acquisition request of the beam information set to the base station, and then the terminal may receive the beam information set sent by the base station in response to the acquisition request.
  • the beam information set may be carried in radio resource control (radio resource control, RRC) signaling, or carried in downlink control information (downlink control information, DCI).
  • RRC radio resource control
  • DCI downlink control information
  • Manner 2 The terminal receives beam information of the first transmitted beam.
  • the beam information of the first beam includes one or more items of a radiation angle of the first beam and a neighborhood relationship of the first beam.
  • the neighborhood relationship of the first transmission beam may specifically be the relative positional relationship between the first transmission beam and the second transmission beam, and the second transmission beam is one or more transmission beams adjacent to the first transmission beam among the N transmission beams. beam.
  • the beam information of the first beam includes the emission angle of the first beam.
  • the beam information of the first beam includes an identifier and a launch angle of the first beam.
  • the beam information of the first transmission beam may include the identifier #0 and the transmission angle ⁇ 0 .
  • the beam information of the first beam includes the beam neighborhood relationship of the first beam.
  • the beam information of the first transmitting beam includes an identifier of the first transmitting beam and an identifier of the second transmitting beam.
  • the first beam is beam 1
  • the beam information of the first beam can be referred to in Table 6.
  • the identifier of the first beam is #1
  • the second beam can have 8, the signs of the second beam are #0, #2, -, #17, -, -, #16, #18 in the order of left, right, up, down, left up, right up, left down, right down , where "-" may indicate that there is no second beam at the corresponding position.
  • the first transmission beam is transmission beam 17
  • the beam information of the first transmission beam can refer to Table 7
  • the identification of the first transmission beam is #17
  • the identification of the second transmission beam is according to left, right, up and down , upper left, upper right, lower left, and lower right are respectively #16, #18, #1, #33, #0, #2, #32, #34.
  • the beam information of the first beam includes the launch angle of the first beam and the beam neighborhood relationship of the first beam.
  • the emission angle of the first beam and the beam neighborhood relationship of the first beam may be carried in the same message or carried in different messages.
  • the terminal may receive beam information of the first transmitting beam from the base station before measuring the reference signal of the first transmitting beam through the first receiving beam. Further, the base station may indicate to the base station the reference signal of the first transmission beam and the beam information of the first transmission beam through a piece of indication information. Based on the above-mentioned cases 1 and 2, examples are as follows:
  • the beam information of the first transmitted beam can be included in the transmission configuration indicator (transmission configuration indicator, TCI) state (state), specifically, the format of the TCI state is shown in Figure 9, and the TCI state includes the AoD field, AoD field may be used to indicate the launch angle of the first beam. Further, the TCI state may also include one or more of the CSI-RS field and the SSB field, where the CSI-RS field is used to indicate the identity of the first beam and the CSI-RS resource index, or the SSB field is used to indicate The identifier and SSB resource index of the first transmitted beam.
  • TCI transmission configuration indicator
  • state transmission configuration indicator
  • the TCI state includes the AoD field, AoD field may be used to indicate the launch angle of the first beam.
  • the TCI state may also include one or more of the CSI-RS field and the SSB field, where the CSI-RS field is used to indicate the identity of the first beam and the CSI-RS resource index, or the SSB field is used to
  • the terminal may receive the TCI state from the base station, where the TCI state includes a CSI-RS field (for example, CSI-RS-ResourceId1, where CSI-RS-ResourceId1 can be used to indicate that the identifier of the first beam is #1) and In the AoD field (for example, ⁇ 1 ), the terminal can determine that the identifier of the first transmission beam is #1 according to the CSI-RS-ResourceId1, and determine that the transmission angle of the first transmission beam is ⁇ 1 according to the AoD field.
  • CSI-RS field for example, CSI-RS-ResourceId1, where CSI-RS-ResourceId1 can be used to indicate that the identifier of the first beam is #1
  • the AoD field for example, ⁇ 1
  • the beam information of the first transmitted beam can be included in the TCI state, the format of the TCI state is shown in Figure 10, for example, the TCI state includes a neighborhood relationship field (represented as neighborb-beam in Figure 10), the neighborhood relationship field Can be used to indicate the identity of the second beam. Further, the TCI state may also include one or more of the CSI-RS field and the SSB field, where the CSI-RS field is used to indicate the identity of the first beam and the CSI-RS resource index, or the SSB field is used to indicate the first beam The identifier and SSB resource index of a beam.
  • the TCI state includes a neighborhood relationship field (represented as neighborb-beam in Figure 10), the neighborhood relationship field Can be used to indicate the identity of the second beam.
  • the TCI state may also include one or more of the CSI-RS field and the SSB field, where the CSI-RS field is used to indicate the identity of the first beam and the CSI-RS resource index, or the SSB field is used to indicate the first
  • the terminal may receive the TCI state from the base station, where the TCI state includes a CSI-RS field (for example, CSI-RS-ResourceId1, where CSI-RS-ResourceId1 can be used to indicate that the identifier of the first beam is #1) and Neighborhood relationship fields (such as #0, #2, -, #17, -, -, #16, #18).
  • CSI-RS field for example, CSI-RS-ResourceId1, where CSI-RS-ResourceId1 can be used to indicate that the identifier of the first beam is #1
  • Neighborhood relationship fields such as #0, #2, -, #17, -, -, #16, #18.
  • the terminal can determine the identity of the first beam to be #1 according to the CSI-RS-ResourceId1, and determine the identity of the second beam to be #0, #2, -, #17, -, -, #16 according to the neighborhood relationship field , #18, wherein, these signs are arranged in order from left, right, top, bottom, left top, right top, left bottom, right bottom, and "-" can indicate that there is no second beam at the corresponding position.
  • the terminal receives the beam information for the first transmission beam before measuring the reference signal of the first transmission beam of the base station through the first reception beam, after one measurement period, the terminal uses the first reception beam After the beam measurement is completed, the reference signals of the N transmission beams of the base station can also be obtained to obtain the beam information set.
  • the terminal can not only receive the beam information for the first transmission beam before measuring the reference signal of the first transmission beam through the first reception beam, the terminal can also measure the reference signal of the first transmission beam through the first reception beam After that, or while measuring the reference signal of the first transmitting beam through the first receiving beam, the beam information of the first transmitting beam from the base station is received, which is not specifically limited in this application.
  • the base station indicates the beam information set to the terminal
  • the terminal can determine the N number of beams in the base station according to the identity information of the base station. One or more items of the N launch angles corresponding to the transmit beams and beam neighborhood relationships.
  • the terminal can also automatically learn the beam neighborhood relationship of the base station through machine learning.
  • the terminal includes M receiving beams, and the terminal can measure the reference signals of the N transmitting beams from the base station according to each of the M receiving beams, so as to obtain the measurement information corresponding to the M receiving beams respectively , the measurement information respectively corresponding to the M receiving beams may form a measurement information set.
  • the terminal can obtain multiple measurement information sets, and each measurement information set includes measurement information corresponding to M receiving beams respectively, and the terminal can obtain the beam neighborhood of the base station through machine learning according to the multiple measurement information sets relation.
  • Step 702 the terminal determines a first launch angle according to the first measurement information and the beam information set.
  • the first measurement information may include N measurement values respectively corresponding to the N transmission beams, and the terminal may determine the first transmission angle according to the N measurement values and the beam information set.
  • Beam Neighborhood Relationship is included in the Beam Information Set:
  • the terminal may determine the first emission angle according to the beam neighborhood relationship and N measurement values.
  • the terminal can solve the following relational expression 1 according to the beam neighborhood relationship and N measured values to obtain the first emission angle.
  • the uniform linear array can be understood as that the antennas at the transmitting end are linearly arranged at equal intervals.
  • relational expression 1 can be expressed as:
  • ⁇ is the intermediate variable to be eliminated, is the first launch angle
  • P max is the maximum measured value among the N measured values
  • the transmitting beam max is the transmitting beam corresponding to the maximum measured value P max ;
  • the transmission beam (max-1) and the transmission beam (max+1) are the transmission beams on the left and right sides of the transmission beam max, respectively, and P max-1 and P max+1 are the transmission beam (max-1) and transmission beam (max+ 1)
  • P max-1 and P max+1 are the transmission beam (max-1) and transmission beam (max+ 1)
  • the terminal may determine N transmission angles respectively corresponding to the N transmission beams according to the beam neighborhood relationship, and then the terminal determines the first transmission angle according to the N transmission angles and N measurement values.
  • the terminal can obtain the emission angle of each transmitting beam according to the neighborhood relationship of the beams. Then the terminal determines the first launch angle based on the following relational expression 2.
  • relational expression 2 can be expressed as:
  • ⁇ is the intermediate variable to be eliminated, is the first launch angle
  • the transmission beam max is the transmission beam corresponding to the maximum measurement value P max
  • ⁇ max is the transmission angle corresponding to the transmission beam max
  • the transmission beam (max-1) and the transmission beam (max+1) are the transmission beams on the left and right sides of the transmission beam max, respectively, and P max-1 and P max+1 are the transmission beam (max-1) and transmission beam (max+ 1)
  • P m is the larger value among P max-1 and P max+1
  • the transmission beam m is the transmission beam corresponding to P m
  • ⁇ m is the transmission angle corresponding to the transmission beam m.
  • the terminal can determine the first emission angle according to the N emission angles and the first measurement information.
  • the specific determination method please refer to the relational expression 2 in the above example 2, and will not repeat it here .
  • the terminal may determine the first emission angle according to the beam neighborhood relationship, the N emission angles, and the first measurement information.
  • the terminal can first verify the N emission angles according to the beam neighborhood relationship.
  • the beam neighborhood relationship can indicate the size relationship between the N emission angles, and the terminal can verify the N emission angles according to the beam neighborhood relationship.
  • the size relationship between the angles is used to verify whether the N launch angles are correct.
  • the transmission beam 0 is located above the transmission beam 16
  • the terminal can obtain N transmission angles.
  • the altitude angle corresponding to the transmitting beam 0 and the altitude angle corresponding to the transmitting beam 16 are determined whether the altitude angle corresponding to the transmitting beam 0 is greater than the altitude angle corresponding to the transmitting beam 16 . If the terminal verifies that the N emission angles are correct according to the size relationship between the N emission angles indicated by the beam neighborhood relationship, then the terminal can obtain the first emission angle based on the N emission angles included in the beam information set based on the second relation , so that the terminal can improve the accuracy of determining the first launch angle.
  • the terminal can first obtain the first emission angle (which may be referred to as the first emission angle 1) based on the beam neighborhood relationship included in the beam information set and based on relational expression 1; and according to the N included in the beam information set emission angles, the first emission angle (may be referred to as the first emission angle 2) is obtained based on the second relation. Then the terminal can perform verification according to the first launch angle 1 and the first launch angle 2. For example, if the terminal determines that the difference between the first launch angle 1 and the first launch angle 2 is less than the launch angle threshold, the terminal can determine the first launch angle Angle 1 and first launch Angle 2 pass validation.
  • the terminal may further determine the final first launch angle according to the first launch angle 1 and the first launch angle 2, for example, the terminal determines that the average value of the first launch angle 1 and the first launch angle 2 is the final first launch angle, so The accuracy of determining the first launch angle by the terminal can be improved.
  • Step 602 the terminal predicts the target launch angle at the target moment according to the first launch angle and the first time delay.
  • the terminal can be in the process of continuous movement, and it can be assumed that the direction and speed of the terminal remain unchanged in a short period of time, so that the terminal can predict the target launch at the target time according to the first launch angle and the first time delay horn.
  • the terminal may further predict the target launch angle according to the first launch angle and optimal launch angles corresponding to multiple measurement periods before the first measurement period.
  • the target launch angle can be obtained based on the following relational formula three.
  • relational expression 3 can be specifically expressed as:
  • the terminal may also predict the target launch angle at the target moment according to the first launch angle and the first time delay, in combination with the terminal's moving direction and moving speed.
  • the terminal can predict the location information of the terminal at the target time according to the historical location information and the first time delay of the terminal, in combination with the moving direction and moving speed of the terminal, where the historical location information can be the terminal at the end of the first measurement period Time (may be referred to as historical time) location information. Then the terminal predicts the target launch angle based on the first launch angle, historical position information, and position information of the terminal at the target moment.
  • the historical position information of the terminal is S1, and the terminal moves in a fixed direction according to the speed v, and the terminal can determine the position of the terminal at the target time according to S1, the first delay and the speed v.
  • Step 603 the terminal determines target measurement information according to the target emission angle and the first measurement information.
  • the target measurement information may also include N target measurement values respectively corresponding to the N transmitting beams, wherein the N target measurement values may be determined by the target emission angle and the N A measured value is determined. It can be understood that the N target measurement values can be obtained based on the following relation 4.
  • P 0 ′, P 1 ′, ..., P N-1 ′ are the N target measurement values in the target measurement information
  • P 0 , P 1 , ..., P N-1 are the N target measurement values included in the first measurement information. measured value, is the target launch angle.
  • the terminal can be launched according to the target launch angle and P i in the first measurement information, predict P i ′ in the target measurement information through a specific way of the following relational formula 4 shown exemplarily:
  • M T is the number of transmitting antennas included in the base station, is the target launch angle, is the first launch angle.
  • the terminal may also select n transmission beams from the N transmission beams, and predict the n transmission beams corresponding to the n measurement values corresponding to the n transmission beams in the first measurement information.
  • the target measurement value is used as the target measurement information
  • n is a positive integer and less than or equal to N.
  • the terminal can use the transmission beam corresponding to the highest signal quality among the N transmission beams before the first measurement period as the historical optimal transmission beam, and then according to the historical optimal transmission beam and the beam neighborhood relationship, start from N Select n transmission beams from the transmission beams.
  • the n transmitting beams may be one or more adjacent transmitting beams of the historical optimal transmitting beam, or one or more transmitting beams close to the historical optimal transmitting beam.
  • the historical optimal transmission beam is transmission beam 17, and the terminal can predict 8 adjacent transmission beams of transmission beam 17, that is, transmission beam 16, transmission beam 18, transmission beam 1, transmission beam 33, transmission beam Target measurement values corresponding to beam 0, transmit beam 2, transmit beam 32, and transmit beam 34, respectively.
  • the terminal may further determine target measurement values corresponding to multiple transmission beams such as transmission beam 3, transmission beam 19, transmission beam 35, transmission beam 48, transmission beam 49, transmission beam 50, and transmission beam 51. The terminal combines these determined target measurement values into target measurement information.
  • the optimal transmission beams corresponding to two adjacent measurement periods can be the same or close in position, that is, there is no need to predict the target measurement corresponding to the transmission beam that is far away from the historical optimal transmission beam value, which can reduce the calculation amount of the terminal.
  • Step 402 the terminal sends indication information to the base station according to the target measurement information, wherein the indication information is used to indicate K target transmission beams, and the K target transmission beams are determined according to the signal quality ranking corresponding to the N transmission beams at the target time , K is a positive integer and less than or equal to N.
  • the target measurement information may include N target measurement values corresponding to the N transmit beams respectively, and the terminal may sort the N target measurement values from large to small, so as to obtain the first K target measurement values in the sorting, K is a positive integer less than or equal to N.
  • the target measurement information may include n target measurement values, and the terminal may sort the n target measurement values from large to small, so as to obtain the first K target measurement values in the sorting, where n is a positive integer and less than Or equal to N, K is a positive integer and less than or equal to n.
  • the first K target measurement values may correspond to K target transmission beams.
  • the target transmission beam may also be referred to as the current optimal transmission beam, or an alternative transmission beam.
  • the indication information sent by the terminal to the base station may include the indication information of the K target beams, where the indication information of the target beam may include the identification of the target beam, or the indication information of the target beam may include the target Transmit beam identification and target measurements.
  • the terminal can send the indication information of K target beams to the base station at the sending time, the sending time can be before the target time, or after the target time, and the sending time can be located at a specific position of the measurement period, such as at Within a preset time period after the second measurement cycle.
  • the indication information of the target transmitting beam may also include the identification of the target receiving beam, that is, the indication information of the target transmitting beam may also include the identification of the target beam pair and the target measurement value, wherein the identification of the target beam pair may be It includes the identification of the target sending beam and the identification of the target receiving beam, and further, the target receiving beam is the first receiving beam.
  • Step 403 the base station determines the serving beam pair corresponding to the target time according to the indication information.
  • the base station can select the service beam corresponding to the target time from the K target beams according to the identifiers of the K target beams.
  • the base station may randomly select one of the K target transmission beams as the service transmission beam corresponding to the target moment.
  • the base station may select the service beam corresponding to the target time from the K target beams according to the identifiers of the K target beams and the service beams corresponding to multiple measurement periods before the target time, where the target time corresponds to
  • the service transmission beam may be one of the service transmission beams corresponding to the multiple measurement periods before the target time, or the service transmission beam close to the target time and corresponding to the multiple measurement periods.
  • the base station may use the target transmit beam as the service transmit beam corresponding to the target moment.
  • the base station can select the target time corresponding to the target time from the K target beams according to the identification of the K target beams and the target measurement value.
  • Service beam In an example, the base station selects the target transmission beam corresponding to the largest target measurement value among the K target measurement values as the service transmission beam corresponding to the target time.
  • the base station can also obtain the measurement values of N transmission beams corresponding to each of the multiple historical measurement periods before the target time, and according to the indication information of the K target transmission beams and the multiple historical For the measurement values of the N transmission beams corresponding to each historical measurement period in the measurement period, a filtering algorithm is executed to select the service transmission beam corresponding to the target time from the N transmission beams.
  • the implementation method for the base station to obtain the measurement values of the N transmission beams corresponding to each historical measurement period is described in advance as follows: Taking the previous historical measurement period at the target time as an example, the terminal can also determine the indication information of the K transmission beams, and the K transmission beams The indication information of the transmission beams is sent to the base station, and correspondingly, the base station can obtain the identifiers and measurement values of the K transmission beams in the previous historical measurement period.
  • the base station can set the measurement values of other (N-K) transmission beams not reported by the terminal in the previous historical measurement cycle as preset values.
  • the preset value is smaller than the K measurement values reported by the terminal.
  • the minimum value for example, the preset value is equal to 1/2 of the minimum value. In this way, the base station can acquire the measurement values of the N transmission beams respectively corresponding to each historical measurement period among the multiple historical measurement periods.
  • the base station may also set the measurement values of other (N-K) beams other than the K target beams as preset values, Therefore, the base station can acquire the measurement values of the N transmission beams in the current measurement period.
  • the base station may combine the measurement values of the N transmission beams in the current measurement period and the measurement values of the N transmission beams corresponding to multiple historical measurement periods to determine the weighted average of the measurement values corresponding to the N transmission beams respectively, where The weighted values corresponding to each measured value may be the same or different.
  • the base station After the base station obtains N weighted averages corresponding to the N transmission beams, it can select the largest weighted average from the N weighted averages, and use the transmission beam corresponding to the largest weighted average as the service transmission beam corresponding to the target time .
  • the base station can obtain the identifier of the target receiving beam (ie, the identifier of the first receiving beam), and combine the identifier of the target receiving beam corresponding to the target time and the identifier of the serving transmitting beam to form a service beam pair corresponding to the target time.
  • the base station may acquire the identifier of the target receiving beam from the indication information of the target transmitting beam.
  • step 404 the base station sends the identity of the serving beam pair corresponding to the target time to the terminal.
  • the base station can determine whether the serving beam pair corresponding to the target moment is the same as the currently used serving beam pair, and if so, it indicates that the serving beam pair currently used by the base station and the terminal is optimal and does not need to be updated.
  • the base station may send an identifier of the serving beam pair corresponding to the target time to the terminal.
  • the base station can send a MAC-CE to the terminal, and the MAC-CE includes the identification of the service beam pair corresponding to the target time, and the MAC-CE can be used to instruct the terminal to switch the service receiving beam, and the service receiving beam after the switching can be used
  • the terminal receives the target signal sent by the serving beam from the base station.
  • Step 405 the base station sends the target signal to the terminal.
  • the base station and the terminal in FIG. 1 as an example for the sending end and the receiving end respectively.
  • This application is also applicable to implementations in which the transmitting end and the receiving end are the terminal and the base station in FIG. 1 respectively.
  • the signal can be SRS.
  • this application can also be applied to the realization of the two terminals in Figure 1 as the sending end and the receiving end, for example, the receiving end is represented by terminal 1, and the sending end is represented by terminal 2, then the realization of Figure 4 to Figure 11 In the manner, the terminal is replaced by terminal 1, and correspondingly, the base station is replaced by terminal 2, and the reference signal may be a DM-RS.
  • the terminal as the sending end may rotate, and the receiving end can determine the emission angle after the rotation of the sending end, and then determine the service beam pair according to the emission angle after the rotation of the sending end, in combination with the implementation methods in Figure 4 to Figure 11 above.
  • the receiving end selects the first measurement information from the measurement information set.
  • the first measurement information is the measurement information corresponding to the optimal receiving beam
  • the receiving end can predict the future time (that is, the target time) corresponding to the first measurement information based on the first measurement information.
  • Measurement information that is, the measurement information corresponding to the target time is predicted by the measurement information corresponding to the optimal receiving beam. In this way, the beam pair with the best signal quality corresponding to the target time can be better determined as the service beam pair, which is helpful Better beam tracking at the receiver.
  • the SNR obtained by measuring the reference signal at the receiving end is greater than the first preset threshold value
  • RSRP1 is the RSRP obtained by the receiving end by measuring the reference signal of the current optimal beam transmission
  • RSRP2 is the RSRP obtained by the receiving end by measuring the reference signal of the historical optimal beam transmission.
  • the receiving end and the transmitting end are the terminal and the base station respectively
  • LOS line of sight
  • the terminal moves at high speed or is close to the base station
  • the base station received by the terminal
  • the signal can obtain a large gain. For example, if the terminal's moving speed is 60km/h and the distance between the terminal and the base station is 40m, the terminal can obtain a gain of more than 4dB when receiving the signal from the base station; If the distance is 40m, the terminal can obtain a gain of more than 10dB when receiving the signal of the base station, which helps to reduce the risk of link disconnection.
  • FIG. 12 and FIG. 13 are schematic structural diagrams of possible communication devices provided by the present application. These communication apparatuses can be used to realize the function of the receiving end (such as a terminal or a wireless access network device) in the above method embodiments, and thus can also realize the beneficial effects of the above method embodiments.
  • the receiving end such as a terminal or a wireless access network device
  • the communication device may be a terminal as shown in Figure 1, or a module (such as a chip) applied to a terminal, the communication device may be a wireless access network device as shown in Figure 1, or It is a module (such as a chip) applied to radio access network equipment.
  • the communication device 1200 includes a processing module 1201 and a transceiver module 1202 .
  • the communication device 1200 is configured to realize the functions of the receiving end in the above-mentioned related embodiments in FIG. 4 to FIG. 11 .
  • the processing module 1201 is configured to acquire first measurement information, where the first measurement information is obtained by measuring reference signals from N transmit beams through the first receive beam in the first measurement period , the first measurement information is used to determine the target measurement information corresponding to the first receiving beam at the target time, the target time is after the first measurement period, and N is a positive integer; the processing module 1201 is also used to calculate from N K target transmission beams are determined in the transmission beams, wherein the K target transmission beams are determined according to the signal quality ranking corresponding to the N transmission beams at the target time, K is a positive integer and is less than or equal to N; the transceiver module 1202 is used for Send indication information, where the indication information is used to instruct K targets to transmit beams.
  • the processing module 1201 is specifically configured to: determine the first emission angle according to the first measurement information; wherein, in the first measurement period, the signal quality corresponding to the first emission angle is the highest; The measurement information and the first launch angle are used to determine the target measurement information.
  • the processing module 1201 is specifically configured to: determine the first emission angle according to the first measurement information and the beam information set; where the beam information set includes N emission angles corresponding to N emission beams, One or more items in the relative positional relationship between any two beams in the N beams.
  • the processing module 1201 is further configured to: control the transceiver module 1202 to receive the beam information of the first beam, the beam information of the first beam includes the launch angle of the first beam, the first beam One or more items in the relative position relationship with the second beam, the first beam is one of the N beams, and the second beam is adjacent to the first beam among the N beams One or more transmitting beams; or, controlling the transceiving module 1202 to receive a beam information set.
  • the processing module 1201 is specifically configured to: in the second measurement period, measure the reference signal through the second receiving beam to obtain the second measurement information; obtain M-1 measurement information before the second measurement period
  • the measurement information corresponding to the period, the second measurement information, and the measurement information corresponding to M-1 measurement periods form M measurement information; the measurement information corresponding to any one of the M-1 measurement periods is the received measurement information corresponding to the measurement period
  • the beam measurement reference signal is obtained; the first measurement information is selected from the M measurement information, wherein, among the M signal qualities corresponding to the M receiving beams indicated by the M measurement information, the signal quality corresponding to the first receiving beam measurement is the highest .
  • the processing module 1201 is specifically configured to: predict the target launch angle at the target moment according to the first launch angle, and the target moment is different from the end moment of the first measurement period by a first time delay; and the first measurement information to determine the target measurement information; wherein, the first time delay includes one or more of cycle time delay and processing time delay, and the cycle time delay includes L measurement cycles, and L is based on the first measurement cycle Determined with the second measurement period, L is a positive integer.
  • the target measurement information includes the measurement information of n transmission beams, and the n transmission beams are determined according to the relative positional relationship between the historical optimal transmission beam and other transmission beams among the N transmission beams
  • the best transmission beam in history is the transmission beam corresponding to the highest signal quality among the N transmission beams before the first measurement period, where n is a positive integer and less than or equal to N.
  • the target measurement information is RSRP
  • the processing module 1201 is specifically configured to: select the first K RSRPs in the target measurement information and RSRP sorted from large to small, and the first K RSRPs correspond to K target Transmitting beams: sending indication information of K target transmission beams, where the indication information of target transmission beams includes the RSRP corresponding to the target transmission beams and the identification of the transmission beams.
  • FIG. 13 shows an apparatus 1300 provided in the embodiment of the present application.
  • the apparatus shown in FIG. 13 may be a hardware circuit implementation manner of the apparatus shown in FIG. 12 .
  • the apparatus may be applicable to the flow chart shown above to perform the functions of the receiving end in the above method embodiments.
  • FIG. 13 For ease of illustration, only the main components of the device are shown in FIG. 13 .
  • the device 1300 shown in FIG. 13 includes a communication interface 1310, a processor 1320 and a memory 1330, wherein the memory 1330 is used for storing program instructions and/or data.
  • Processor 1320 may cooperate with memory 1330 .
  • Processor 1320 may execute program instructions stored in memory 1330 . When the instructions or programs stored in the memory 1330 are executed, the processor 1320 is used to perform the operations performed by the processing module 1201 in the above embodiments, and the communication interface 1310 is used to perform the operations performed by the transceiver module 1202 in the above embodiments.
  • the memory 1330 is coupled to the processor 1320 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • At least one of the memories 1330 may be included in the processor 1320 .
  • the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.
  • the transceiver when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; it may also be a transceiver integrated with a transceiver function, or a communication interface.
  • Apparatus 1300 may also include a communication link 1340 .
  • the communication interface 1310, the processor 1320 and the memory 1330 can be connected to each other through the communication line 1340;
  • the communication line 1340 can be a peripheral component interconnect standard (peripheral component interconnect, referred to as PCI) bus or an extended industry standard architecture (extended industry standard architecture , referred to as EISA) bus and so on.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the communication line 1340 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 13 , but it does not mean that there is only one bus or one type of bus.
  • the embodiment of the present application provides a communication device, including a processor, the processor is connected to the memory, the memory is used to store the computer program, and the processor is used to execute the computer program stored in the memory, so that the communication device performs Functions of the receiving end in the related embodiments in FIG. 4 to FIG. 11 .
  • an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is executed by a computer, the related information shown in Figure 4 to Figure 11 is realized.
  • the function of the receiving end in the embodiment is realized.
  • the embodiment of the present application provides a computer program product
  • the computer program product includes computer programs or instructions, when the computer programs or instructions are executed by the computer, the functions of the receiving end in the related embodiments in Figure 4 to Figure 11 are realized .
  • the embodiment of the present application provides a communication system, the communication system includes a receiving end and a sending end, wherein the receiving end can be used to perform the functions of the receiving end in the related embodiments in FIG. 4 to FIG. 11 .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Abstract

Procédé et dispositif de détermination d'un faisceau de transmission, destinés à être utilisés pour résoudre le problème de l'état de la technique selon lequel une extrémité de réception ne peut pas bien mettre en œuvre un suivi de faisceau. Dans la présente demande, une extrémité de réception obtient des premières informations de mesure, les premières informations de mesure étant obtenues par l'extrémité de réception mesurant des signaux de référence à partir de N faisceaux de transmission au moyen d'un premier faisceau de réception dans une première période de mesure, les premières informations de mesure pouvant être utilisées pour déterminer des informations de mesure cibles correspondant au premier faisceau de réception à un moment cible, le moment cible étant après la première période de mesure, et N étant un nombre entier positif ; l'extrémité de réception transmet des informations d'indication en fonction des informations de mesure cibles, les informations d'indication pouvant être utilisées pour indiquer K faisceaux de transmission cibles, et les K faisceaux de transmission cibles étant déterminés par tri de qualités de signal correspondant aux N faisceaux de transmission au moment cible, K étant un nombre entier positif et étant inférieur ou égal à N.
PCT/CN2021/130673 2021-11-15 2021-11-15 Procédé et dispositif de détermination de faisceau de transmission WO2023082258A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160373180A1 (en) * 2013-12-20 2016-12-22 Zte Corporation Downlink beam determining method, device and system, and computer storage medium
CN108243430A (zh) * 2016-12-23 2018-07-03 维沃移动通信有限公司 一种波束管理信息的配置、处理方法、终端及基站
CN108631830A (zh) * 2017-03-24 2018-10-09 电信科学技术研究院 一种发送波束确定方法、发送端和接收端
WO2020164027A1 (fr) * 2019-02-13 2020-08-20 Nokia Shanghai Bell Co., Ltd. Sélection de faisceau de multi-trp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160373180A1 (en) * 2013-12-20 2016-12-22 Zte Corporation Downlink beam determining method, device and system, and computer storage medium
CN108243430A (zh) * 2016-12-23 2018-07-03 维沃移动通信有限公司 一种波束管理信息的配置、处理方法、终端及基站
CN108631830A (zh) * 2017-03-24 2018-10-09 电信科学技术研究院 一种发送波束确定方法、发送端和接收端
WO2020164027A1 (fr) * 2019-02-13 2020-08-20 Nokia Shanghai Bell Co., Ltd. Sélection de faisceau de multi-trp

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