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WO2019223665A1 - Procédé de transmission de données de liaison descendante, appareil de réseau et terminal - Google Patents

Procédé de transmission de données de liaison descendante, appareil de réseau et terminal Download PDF

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Publication number
WO2019223665A1
WO2019223665A1 PCT/CN2019/087689 CN2019087689W WO2019223665A1 WO 2019223665 A1 WO2019223665 A1 WO 2019223665A1 CN 2019087689 W CN2019087689 W CN 2019087689W WO 2019223665 A1 WO2019223665 A1 WO 2019223665A1
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WO
WIPO (PCT)
Prior art keywords
wide
narrow
terminal
beams
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/087689
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English (en)
Chinese (zh)
Inventor
赵培尧
王昭诚
徐凯
庄宏成
孙彦良
张莉莉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201810893428.1A external-priority patent/CN110535579B/zh
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to US17/057,462 priority Critical patent/US11395156B2/en
Publication of WO2019223665A1 publication Critical patent/WO2019223665A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method, a network device, and a terminal for transmitting downlink data.
  • MIMO Multiple-Input Multiple-Output
  • This MIMO technology can improve system capacity and spectrum efficiency, enabling the system to obtain higher transmission rates under limited spectrum resources. And system throughput.
  • spatial multiplexing gain can be obtained and the capacity of the communication channel can be increased.
  • a communication system including a base station, a wide beam terminal, and a narrow beam terminal is taken as an example.
  • the wide beam terminal can be understood as a terminal that is using a wide beam or is about to use a wide beam.
  • a narrow beam terminal can be understood as a terminal that is using a narrow beam or is about to use a narrow beam.
  • FIG. 1 is a schematic diagram of a method for transmitting downlink data provided by the prior art.
  • the base station receives a wide beam The widest beam with the largest reference signal received power (Reference Signaling Power, RSRP) fed back by the terminal and the narrowest beam with the largest RSRP fed back by the terminal.
  • RSRP Reference Signaling Power
  • the interference measurement needs to be performed on the widest beam with the largest RSRP and the narrowest beam with the largest RSRP.
  • the S103 base station sends orthogonal reference signals to the wide-beam terminal and the narrow-beam terminal, so that the wide-beam terminal and the narrow-beam terminal can measure the signal strength and interference intensity of the respective feedback beams according to the orthogonal reference signal, respectively. And feedback the respective measured signal strength and interference strength to the base station; Terminal to determine a wide beam and narrow-beam terminal based on the signal strength and interference strength of the feedback signal to interference ratio, and whether a downlink data transmission according to the determined ratio SIR obtained.
  • interference measurement needs to be performed first by sending an orthogonal reference signal.
  • This orthogonal reference signal will occupy a certain amount of time-frequency resources, resulting in a large overhead of interference measurement.
  • the wide-beam terminal and the The narrow-beam terminal can measure the signal strength and interference intensity of the respective feedback beams according to the orthogonal reference signal, and feed them back to the base station. It takes a certain amount of time, resulting in a large delay in interference measurement.
  • the present application provides a method, a network device, and a terminal for transmitting downlink data, so as to reduce the overhead and delay of interference measurement when transmitting downlink data.
  • an embodiment of the present application provides a method for transmitting downlink data.
  • the method for transmitting downlink data may include:
  • first beam feedback information includes information of a first wide beam to be used by the wide beam terminal and information of M wide beams whose signal quality satisfies a first condition, where M is greater than or An integer equal to 1
  • the second beam feedback information includes information of a second wide beam determined by the narrow beam terminal and information of N wide beams whose signal quality satisfies a second condition, where N is greater than or equal to An integer of 1
  • the method provided in the embodiment of the present application can directly determine whether to transmit downlink data to a wide-beam terminal and a narrow-beam terminal based on the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams are the signal quality of the alternative wide beams that is less than the first Threshold M wide beams;
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • determining whether to transmit downlink data to a wide beam terminal and a narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes:
  • both the signal-to-interference ratio of the wide-beam terminal and the signal-to-interference ratio of the narrow-beam terminal are greater than the third threshold, it is determined that downlink data is transmitted to the narrow-beam terminal on the first narrow beam and transmitted to the wide-beam terminal on the first wide beam. Downstream data.
  • the information of the first wide beam includes reference signal reception power RSRP of the first wide beam
  • the information of the first narrow beam includes RSRP of the first narrow beam. It is determined that the wide beam terminal and the narrow beam terminal are each S / N ratio, including:
  • a signal-to-interference ratio of the narrow-beam terminal is determined according to a ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam among the N wide beams.
  • determining whether to transmit downlink data to a wide beam terminal and a narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes:
  • a third beam feedback message is received from the wide beam terminal;
  • the third beam feedback message includes information of P narrow beams whose signal quality satisfies the third condition; P is greater than Or an integer equal to 1;
  • the P narrow beams are P narrow beams whose signal quality in a candidate narrow beam covered by a first wide beam used for downlink transmission is less than a third threshold.
  • the first narrow beam is any of the P narrow beams, determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal;
  • both the signal-to-interference ratio of the wide-beam terminal and the signal-to-interference ratio of the narrow-beam terminal are greater than the fourth threshold, it is determined that downlink data is transmitted to the narrow-beam terminal on the first narrow beam and transmitted to the wide-beam terminal on the first wide beam. Downstream data.
  • the information of the first wide beam includes RSRP of the first wide beam
  • the information of the first narrow beam includes RSRP of the first narrow beam.
  • the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal are determined.
  • a signal-to-interference ratio of the narrow-beam terminal is determined according to a ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam among the N wide beams.
  • the method for transmitting downlink data may further include:
  • the first narrow beam is not any of the P narrow beam information, it is determined that downlink data is not transmitted to the narrow beam terminal on the first narrow beam, and downlink data is not transmitted to the wide beam terminal on the first wide beam.
  • the method before receiving the third beam feedback message from the wide beam terminal, the method further includes:
  • the candidate narrow beams under the coverage of the first wide beam used for downlink transmission are scanned.
  • an embodiment of the present application further provides a method for transmitting downlink data.
  • the method for transmitting downlink data may include:
  • the candidate wide beam for downlink transmission scanned by the base station When the candidate wide beam for downlink transmission scanned by the base station is received, the information of the first wide beam to be used by the wide beam terminal and the information of the M wide beams whose signal quality meets the first condition are determined in the candidate wide beam.
  • M is an integer greater than or equal to 1;
  • the base station Send the first beam feedback information to the base station, where the first beam feedback information includes information of the first wide beam and information of the M wide beams.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams; or the M wide beams are the M wide beams with the signal quality less than the first threshold in the candidate wide beams Beam.
  • the method for transmitting downlink data may further include:
  • the candidate narrow beam is sent by the base station when it determines that the parent beam of the first narrow beam to be used by the narrow beam terminal is the first wide beam ;
  • P is an integer greater than or equal to 1;
  • the base station sends a third beam feedback message to the base station; the third beam feedback message includes information of the P narrow beams.
  • the P narrow beams are P narrow beams in which the signal quality of the candidate narrow beams is less than a third threshold.
  • an embodiment of the present application further provides a method for transmitting downlink data.
  • the method for transmitting downlink data may include:
  • N is an integer greater than or equal to 1;
  • the base station Sending second beam feedback information to the base station, where the second beam feedback information includes information of a second wide beam and information of N wide beams;
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beams. Beam.
  • an embodiment of the present application further provides a network device, and the network device may include:
  • a receiving unit configured to receive first beam feedback information from a wide beam terminal; wherein the first beam feedback information includes information of a first wide beam to be used by the wide beam terminal and information of M wide beams whose signal quality meets a first condition , M is an integer greater than or equal to 1;
  • the receiving unit is further configured to receive second beam feedback information from the narrow beam terminal.
  • the second beam feedback information includes information of the second wide beam determined by the narrow beam terminal and information of N wide beams whose signal quality meets the second condition.
  • N is an integer greater than or equal to 1;
  • the receiving unit is further configured to receive information of a first narrow beam to be used by the narrow beam terminal from the narrow beam terminal, where the first narrow beam is a narrow beam covered by a second wide beam;
  • a determining unit configured to determine whether to transmit downlink data to a wide beam terminal and a narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams are the signal quality of the alternative wide beams that is less than the first Threshold M wide beams;
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • the determining unit is specifically configured to determine when the parent beam of the first narrow beam is any of the M wide beams, and the first wide beam is any of the N wide beams.
  • the information of the first wide beam includes reference signal reception power RSRP of the first wide beam
  • the information of the first narrow beam includes RSRP of the first narrow beam
  • the determining unit is specifically configured to determine the product of the RSRP and the parameter of the parent beam of the first narrow beam among the M wide beams; where the parameter is the square of the maximum gain difference; and according to the ratio of the RSRP of the first wide beam to the product, determine Signal-to-interference ratio of wide beam terminals;
  • the determining unit is further specifically configured to determine a signal-to-interference ratio of the narrow-beam terminal according to a ratio of the RSRP of the first narrow beam and the RSRP of the first wide beam among the N wide beams.
  • the determining unit is specifically configured to receive the third beam feedback message from the wide beam terminal when the parent beam of the first narrow beam is the first wide beam; the third beam feedback message includes signal quality Information of P narrow beams satisfying the third condition; P is an integer greater than or equal to 1; determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam according to the first narrow beam and third beam feedback messages, and Downlink data is transmitted on the first wide beam to the wide beam terminal.
  • the P narrow beams are P narrow beams whose signal quality in a candidate narrow beam covered by a first wide beam used for downlink transmission is less than a third threshold.
  • the determining unit is specifically configured to determine the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal if the first narrow beam is any of the P narrow beams; Both the signal-to-interference ratio and the signal-to-interference ratio of the narrow-beam terminal are greater than the fourth threshold, it is determined that downlink data is transmitted to the narrow-beam terminal on the first narrow beam, and downlink data is transmitted to the wide-beam terminal on the first wide beam.
  • the information of the first wide beam includes RSRP of the first wide beam
  • the information of the first narrow beam includes RSRP of the first narrow beam
  • a determining unit specifically configured to determine the signal-to-interference ratio of the wide-beam terminal according to the ratio of the RSRP of the first wide beam to the RSRP of the first narrow beam among the P narrow beams;
  • the ratio of the RSRP of the first wide beam in the medium determines the signal-to-interference ratio of the narrow-beam terminal.
  • the determining unit is further configured to, if the first narrow beam is not any of the P narrow beam information, determine that downlink data is not transmitted to the narrow beam terminal on the first narrow beam, and Downlink data is transmitted on the first wide beam to the wide beam terminal.
  • the network device may further include:
  • a scanning unit configured to stop scanning a candidate narrow beam under the first wide beam coverage for downlink transmission if P is greater than or equal to a fifth threshold
  • the scanning unit is further configured to scan a candidate narrow beam covered by a first wide beam used for downlink transmission.
  • an embodiment of the present application further provides a wide beam terminal.
  • the wide beam terminal may include:
  • a determining unit configured to determine, when receiving the candidate wide beam scanned by the base station for downlink transmission, in the candidate wide beam, the information and signal quality of the first wide beam to be used by the wide beam terminal satisfying the first condition M Information of a wide beam, M is an integer greater than or equal to 1;
  • the sending unit is configured to send the first beam feedback information to the base station, where the first beam feedback information includes information of the first wide beam and information of the M wide beams.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams; or, the M wide beams are the M wide beams whose signal quality is less than the first threshold in the candidate wide beams. Beam.
  • the wide beam terminal may further include:
  • a receiving unit configured to receive a candidate narrow beam that is scanned by a base station and covered by a first wide beam for downlink transmission; the candidate narrow beam is the base beam of the first narrow beam that the base station determines to be used by the narrow beam terminal as the first Sent in a wide beam;
  • the determining unit is further configured to determine, among the candidate narrow beams, information of P narrow beams whose signal quality meets a third condition; P is an integer greater than or equal to 1;
  • the sending unit is further configured to send a third beam feedback message to the base station; the third beam feedback message includes information of P narrow beams.
  • the P narrow beams are P narrow beams in which the signal quality of the candidate narrow beams is less than a third threshold.
  • an embodiment of the present application further provides a narrow beam terminal.
  • the narrow beam terminal may include:
  • a determining unit configured to determine, when receiving the candidate wide beams scanned by the base station for downlink transmission, N pieces of information and signal qualities of the second wide beams determined by the narrow beam terminal that satisfy the second condition among the candidate wide beams Wide beam information, N is an integer greater than or equal to 1;
  • a sending unit configured to send second beam feedback information to the base station, where the second beam feedback information includes information of a second wide beam and information of N wide beams;
  • the determining unit is further configured to determine, when receiving the candidate narrow beam under the second wide beam coverage scanned by the base station for downlink transmission, the candidate narrow beam to be used by the narrow beam terminal among the candidate narrow beams covered by the second wide beam.
  • the sending unit is further configured to send information of the first narrow beam to be used by the narrow beam terminal to the base station.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam. Beam.
  • an embodiment of the present application further provides a network device, and the network device may include:
  • a receiver configured to receive first beam feedback information from a wide beam terminal; wherein the first beam feedback information includes information of a first wide beam to be used by the wide beam terminal and information of M wide beams whose signal quality satisfies a first condition , M is an integer greater than or equal to 1;
  • the receiver is further configured to receive second beam feedback information from the narrow beam terminal; wherein the second beam feedback information includes information of the second wide beam determined by the narrow beam terminal and information of N wide beams whose signal quality meets the second condition , N is an integer greater than or equal to 1;
  • the receiver is further configured to receive information of a first narrow beam to be used by the narrow beam terminal from the narrow beam terminal, where the first narrow beam is a narrow beam covered by a second wide beam;
  • the processor is configured to determine whether to transmit downlink data to the wide beam terminal and the narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams are the signal quality of the alternative wide beams that is less than the first Threshold M wide beams;
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • determining whether to transmit downlink data to a wide beam terminal and a narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes:
  • the parent beam of the first narrow beam is any of the M wide beams
  • the first wide beam is any of the N wide beams
  • the information of the first wide beam includes a reference signal received power RSRP of the first wide beam
  • determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes:
  • the receiver is further configured to: when the parent beam of the first narrow beam is the first wide beam, receive a third beam feedback message from the wide beam terminal; the third beam feedback message includes signal quality Information of P narrow beams satisfying the third condition; P is an integer greater than or equal to 1;
  • Determining whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes: determining whether to determine whether the Downlink data is transmitted to a narrow beam terminal on a narrow beam, and downlink data is transmitted to a wide beam terminal on a first wide beam.
  • the first narrow beam is any of the P narrow beams, determine the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal; if both the signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal are greater than the fourth The threshold, it is determined that downlink data is transmitted to the narrow beam terminal on the first narrow beam, and downlink data is transmitted to the wide beam terminal on the first wide beam.
  • the information of the first wide beam includes RSRP of the first wide beam
  • determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes: according to the RSRP of the first wide beam and the P narrow
  • the ratio of the RSRP of the first narrow beam in the beam determines the signal-to-interference ratio of the wide-beam terminal; and the signal-to-interference ratio of the narrow beam terminal is determined based on the ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam of the N wide beams. ratio.
  • the processor is further configured to, if P is greater than or equal to a fifth threshold, stop scanning for a candidate narrow beam under a first wide beam coverage for downlink transmission.
  • the processor is further configured to scan a candidate narrow beam covered by a first wide beam used for downlink transmission.
  • an embodiment of the present application further provides a wide beam terminal, which is characterized in that the wide beam terminal may include:
  • a processor configured to determine, when receiving the candidate wide beam scanned by the base station for the downlink transmission, the information and signal quality of the first wide beam to be used by the wide beam terminal to meet the first condition in the candidate wide beam M
  • Information of a wide beam M is an integer greater than or equal to 1;
  • the transmitter is configured to send the first beam feedback information to the base station, where the first beam feedback information includes information of the first wide beam and information of the M wide beams.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams; or, the M wide beams are the M wide beams whose signal quality is less than the first threshold in the candidate wide beams. Beam.
  • the wide beam terminal may further include a receiver
  • a receiver configured to receive a candidate narrow beam covered by a first wide beam for downlink transmission scanned by a base station; the candidate narrow beam is a base beam of the first narrow beam to be used by the base station to determine the parent beam of the narrow beam terminal to be the first Sent in a wide beam;
  • a processor further configured to determine, among the candidate narrow beams, information of P narrow beams whose signal quality satisfies a third condition; P is an integer greater than or equal to 1;
  • the transmitter is further configured to send a third beam feedback message to the base station; the third beam feedback message includes information of P narrow beams.
  • an embodiment of the present application further provides a narrow beam terminal.
  • the narrow beam terminal may include:
  • a processor configured to determine, when receiving the candidate wide beams scanned by the base station for downlink transmission, information and signal quality of the second wide beam determined by the narrow beam terminal in the candidate wide beams that meet the second condition Wide beam information, N is an integer greater than or equal to 1;
  • a processor further configured to determine, when receiving the candidate narrow beam under the second wide beam coverage scanned by the base station for the downlink transmission, the candidate narrow beam to be used by the narrow beam terminal among the candidate narrow beams covered by the second wide beam First narrow beam;
  • the transmitter is further configured to send information of the first narrow beam to be used by the narrow beam terminal to the base station.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beams. Beam.
  • an embodiment of the present application further provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, the downlink described in any one of the first aspects is executed. Data transmission method.
  • an embodiment of the present application further provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method described in any one of the foregoing second aspects is executed.
  • an embodiment of the present application further provides a circuit system, which may include a processing circuit
  • the first beam feedback information is received from the wide beam terminal, the second beam feedback information is received from the narrow beam terminal, and the first narrow beam information to be used by the narrow beam terminal is received from the narrow beam terminal.
  • the first narrow beam is the second wide beam.
  • the processing circuit is configured to determine whether to transmit downlink data to the wide beam terminal and the narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information;
  • the beam feedback information includes information of the first wide beam to be used by the wide beam terminal and information of M wide beams whose signal quality satisfies the first condition, where M is an integer greater than or equal to 1, and the second beam feedback information includes the determination of the narrow beam terminal.
  • the information of the second wide beam and the information of N wide beams whose signal quality satisfies the second condition, N is an integer greater than or equal to 1.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams are the signal quality of the alternative wide beams that is less than the first Threshold M wide beams;
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • determining whether to transmit downlink data to a wide beam terminal and a narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes:
  • the parent beam of the first narrow beam is any of the M wide beams
  • the first wide beam is any of the N wide beams
  • the information of the first wide beam includes a reference signal received power RSRP of the first wide beam
  • determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes:
  • the parent beam of the first narrow beam is a first wide beam, and it is determined whether to send signals to the wide beam terminal and the narrow beam according to the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the terminal transmits downlink data, including:
  • the third beam feedback message includes Information of P narrow beams whose signal quality satisfies the third condition; P is an integer greater than or equal to 1.
  • determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam according to the first narrow beam and the third beam feedback message includes:
  • the first narrow beam is any of the P narrow beams, determine the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal; if both the signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal are greater than the fourth The threshold, it is determined that downlink data is transmitted to the narrow beam terminal on the first narrow beam, and downlink data is transmitted to the wide beam terminal on the first wide beam.
  • the information of the first wide beam includes RSRP of the first wide beam
  • determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes: according to the RSRP of the first wide beam and the P narrow
  • the ratio of the RSRP of the first narrow beam in the beam determines the signal-to-interference ratio of the wide-beam terminal; and the signal-to-interference ratio of the narrow beam terminal is determined based on the ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam of the N wide beams. ratio.
  • determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam according to the first narrow beam and the third beam feedback message further includes: if the first narrow beam is not P narrow beams Any one of the information is determined not to transmit downlink data to the narrow beam terminal on the first narrow beam, and not to transmit downlink data to the wide beam terminal on the first wide beam.
  • the processing circuit is further configured to, if P is greater than or equal to a fifth threshold, stop scanning the candidate narrow beams under the first wide beam coverage used for downlink transmission.
  • the processing circuit is further configured to scan a candidate narrow beam covered by a first wide beam used for downlink transmission.
  • an embodiment of the present application further provides a circuit system, which may include a processing circuit
  • the processing circuit is configured to, when receiving a candidate wide beam scanned by a base station for downlink transmission, determine in the candidate wide beam that the information and signal quality of the first wide beam to be used by the wide beam terminal satisfy the first For a condition of M wide beams, M is an integer greater than or equal to 1.
  • the M wide beams are M wide beams having the smallest signal quality among the candidate wide beams; or, the M wide beams are signal quality among the candidate wide beams. M wide beams smaller than the first threshold.
  • the processing circuit is further configured to: after receiving the candidate narrow beam covered by the first wide beam for downlink transmission scanned by the base station, Information of P narrow beams in the beam that determine the signal quality meeting the third condition; P is an integer greater than or equal to 1; the candidate narrow beam is the parent of the first narrow beam to be used by the base station when determining the narrow beam terminal The beam is sent when the first wide beam is used.
  • an embodiment of the present application further provides a circuit system, which may include a processing circuit
  • the processing circuit is configured to: when the candidate wide beam scanned by the base station for downlink transmission is received, determine the information and signal quality of the second wide beam determined by the narrow beam terminal in the candidate wide beam to meet the second Information of N wide beams under conditions, where N is an integer greater than or equal to 1;
  • the processing circuit is further configured to: after sending the second beam feedback information to the base station, when receiving the candidate narrow beam covered by the second wide beam for downlink transmission scanned by the base station,
  • the first narrow beam to be used by the narrow beam terminal is determined from the candidate narrow beams covered by the second wide beam; wherein the second beam feedback information includes the information of the second wide beam and the N number of beams. Wide beam information.
  • the N wide beams are N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the signal quality among the candidate wide beams. N wide beams smaller than the second threshold.
  • an embodiment of the present application further provides a communication system including the network device shown in the fourth aspect, the wide beam terminal shown in the fifth aspect, and the narrow beam terminal shown in the sixth aspect, Or, it includes the network device shown in the seventh aspect, the wide beam terminal shown in the eighth aspect, and the narrow beam terminal shown in the ninth aspect.
  • the downlink data transmission method, network device, and terminal provided in the embodiments of the present application receive first beam feedback information from a wide beam terminal, where the first beam feedback information includes information about the first wide beam to be used by the wide beam terminal and Information of M wide beams whose signal quality satisfies the first condition; receiving second beam feedback information from the narrow beam terminal; wherein the second beam feedback information includes information of the second wide beam determined by the narrow beam terminal and the signal quality satisfies the second Information of N wide beams under conditions; and receiving information of a first narrow beam to be used by a narrow beam terminal from a narrow beam terminal, where the first narrow beam is a narrow beam covered by a second wide beam;
  • the beam feedback information, the second beam feedback information, and the information of the first narrow beam determine whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal.
  • FIG. 1 is a schematic diagram of a downlink data transmission method provided in the prior art
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a scenario provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another scenario provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a method for transmitting downlink data according to an embodiment of the present application.
  • FIG. 6 is a diagram illustrating a relationship between spectral efficiency of a wide-beam terminal and a narrow-beam terminal as a function of a signal-to-noise ratio according to an embodiment of the present application;
  • FIG. 7 is a schematic diagram of another downlink data transmission method according to an embodiment of the present application.
  • FIG. 8 is a relationship diagram between the spectral efficiency of another wide-beam terminal and a narrow-beam terminal as a function of a signal-to-noise ratio according to an embodiment of the present application;
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another network device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a wide beam terminal according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another wide beam terminal according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a narrow beam terminal according to an embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of still another network device according to an embodiment of the present application.
  • 15 is a schematic structural diagram of still another wide beam terminal according to an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of still another narrow beam terminal according to an embodiment of the present application.
  • the embodiments of the present application can be applied to various communication systems, for example, a Global System for Mobile (GSM) system, a Code Division Multiple Access (CDMA) system, and a Wideband Code Division Multiple Access (Wideband Code) Division Multiple Access Wireless (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE), 5G communication system or other systems that may appear in the future, some of the terms in this application are as follows Explanations will be made for easy understanding by those skilled in the art. It should be noted that when the solution of the embodiment of the present application is applied to a 5G system or other systems that may appear in the future, the names of network equipment and terminals may change, but this does not affect the implementation of the solution of the embodiment of the present application.
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • the communication system may be a cellular mobile communication network system.
  • the cellular mobile communication network system operates in a high frequency band (frequency> 6GHz), and may include network equipment and at least two Terminal equipment, the network equipment (such as a base station) is equipped with an antenna array, and beamforming is used to generate a directional beam for downlink signal transmission; and, the network equipment can simultaneously launch multiple beams at the same frequency for downlink multi-user MIMO transmission.
  • a high frequency band frequency> 6GHz
  • the network equipment such as a base station
  • beamforming is used to generate a directional beam for downlink signal transmission
  • the network equipment can simultaneously launch multiple beams at the same frequency for downlink multi-user MIMO transmission.
  • FIG. 2 please refer to FIG. 2.
  • the network equipment determines whether it can transmit to the wide-beam terminal and the narrow-beam terminal at the same time.
  • Data that is, when the network device determines whether the wide beam terminal and the narrow beam terminal can be scheduled at the same time, the network device needs to send orthogonal reference signals to the wide beam terminal and the narrow beam terminal, so that the wide beam terminal and the narrow beam terminal can respectively Cross-reference signals measure the signal strength and interference strength of the beams fed back, and feed back the measured signal strength and interference strength to the network equipment; so that the network equipment can determine the wide beam terminal and narrow beam according to the feedback signal strength and interference strength The signal-to-interference ratio of the terminal, and determines whether to perform downlink data transmission according to the obtained signal-to-interference ratio.
  • the orthogonal reference signal occupies a certain time-frequency resource, resulting in a large overhead of interference measurement.
  • the wide-beam terminal and the narrow-beam terminal can measure the signal strength and impact of the respective feedback beams according to the orthogonal reference signal, respectively.
  • the interference intensity and feedback to the network equipment it takes a certain amount of time, resulting in a large delay in interference measurement.
  • Terminal also known as terminal equipment, user equipment (UE) is a device that provides voice and / or data connectivity to users, such as handheld devices with wireless connectivity, vehicle-mounted devices , IoT devices, etc.
  • Common terminal devices include: mobile phones, tablets, laptops, PDAs, mobile Internet devices (MID), and wearable devices.
  • wearable devices include: smart watches, smart bracelets, step counting ⁇ ⁇ And other.
  • Network equipment also known as Radio Access Network (RAN) equipment is a type of equipment that connects terminal equipment to the wireless network, and includes network equipment in various communication standards, such as including but not limited to : Base station, evolved Node B (eNB), radio network controller (RNC), node B (NB), network equipment controller (Base Station Controller, BSC), network equipment Transceiver Station (Base Transceiver Station, BTS), home network equipment (for example, Home NodeB, or Home NodeB, HNB), Baseband Unit (BBU), and so on.
  • RAN Radio Access Network
  • RAN Radio Access Network
  • the network equipment includes network equipment of various frequency systems, such as, but not limited to, low-frequency network equipment and high-frequency network equipment.
  • an embodiment of the present application provides a method for transmitting downlink data.
  • One beam of feedback information includes information of a first wide beam to be used by a wide beam terminal and information of M wide beams whose signal quality satisfies a first condition; receiving second beam feedback information from a narrow beam terminal ;
  • the second beam feedback information includes information of the second wide beam determined by the narrow beam terminal and information of N wide beams whose signal quality satisfies the second condition; and receives the first narrow beam to be used by the narrow beam terminal from the narrow beam terminal.
  • the first narrow beam is the narrow beam covered by the second wide beam; in this way, it can be determined directly to the wide beam terminal and the narrow beam based on the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the beam terminal transmits downlink data. Compared with the prior art, there is no need to send additional orthogonal reference signals for interference measurement. Low reference signal caused by resource overhead, while reducing the delay caused by interference measurements.
  • the transmission scenario of the downlink data can be divided into two scenarios.
  • the first scenario the wide beam to be used by the wide beam terminal and the The narrow beams to be used by the narrow beam terminal do not overlap.
  • FIG. 3 is a schematic diagram of a scenario provided by an embodiment of the present application.
  • the second scenario the wide beam and The narrow beams to be used by the narrow beam terminal overlap, as shown in FIG. 4, which is a schematic diagram of another scenario provided by an embodiment of the present application.
  • a wide beam terminal can be understood as a terminal that is using a wide beam or is about to use a wide beam; a narrow beam terminal It can be understood as a terminal that is using a narrow beam or is about to use a narrow beam; the parent beam of the narrow beam can be understood that if the narrow beam is within the coverage of a wide beam, the wide beam is the parent beam of the narrow beam. For a narrow beam, it may correspond to one or more parent beams. In the following, a detailed embodiment will be used to describe the downlink data transmission method in two different scenarios.
  • FIG. 5 is a downlink data transmission provided by an embodiment of the present application.
  • a schematic diagram of a method. The method for transmitting downlink data may include:
  • the network device scans a candidate wide beam for downlink transmission.
  • the alternative wide beam may be understood as a wide beam to be used by a network device for downlink transmission.
  • the network device scans the candidate wide beam to the wide-beam terminal and the narrow-beam terminal, so that the wide-beam terminal and the narrow-beam terminal measure the candidate wide beam, thereby performing the following S502-S505:
  • the wide-beam terminal determines, among the candidate wide beams, information of a first wide beam to be used by the wide-beam terminal and information of M wide beams whose signal quality satisfies a first condition.
  • the M wide beams may be M wide beams having the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams may be M among the candidate wide beams whose signal quality is less than the first threshold.
  • Wide beams can be understood as the wide beam to be used by the wide beam terminal.
  • the first wide beam may be the widest beam with the largest RSRP among all the candidate wide beams measured by the wide beam terminal.
  • the M wide beams determined by the wide beam terminal may be understood as M wide beams that have less interference with the first wide beam among the candidate wide beams.
  • the information of the first wide beam may include the RSRP of the first wide beam, and of course, the ID information of the first wide beam may also be included.
  • the information of each wide beam in the information of the M wide beams is also The RSRP of the wide beam may be included, and of course, the ID of the wide beam may also be included.
  • the wide-beam terminal may perform RSRP measurement on each of the candidate wide beams, thereby selecting the widest beam with the largest RSRP in the candidate wide beam.
  • the widest beam with the largest RSRP is determined as the first wide beam to be used; in addition, M wide beams with the smallest signal quality or M wide beams with a signal quality less than the first threshold are selected from the candidate wide beams. , Determine it as M wide beams that satisfy the first condition.
  • the first threshold may be set according to actual needs. Here, the number of the first threshold is not limited in the embodiment of the present application.
  • the candidate wide beams scanned by the network device for downlink transmission are ⁇ f 1 , ..., f A ⁇
  • the candidate (including wide-beam terminals and narrow-beam terminals) alternative receive wide beams are ⁇ w 1 , ..., w B ⁇ .
  • the wide beam terminal measures the channel quality (generally represented by RSRP) of all candidate wide beam pairs, so as to determine the information of the first wide beam to be used by the wide beam terminal in the candidate wide beam.
  • RSRP channel quality
  • w opt represents the first wide beam selected by the wide beam terminal
  • h represents the channel matrix
  • f i represents the i-th wide beam
  • k i represents the index of the i-th wide beam
  • k j represents the index of the j-th wide beam.
  • Index; after determining the M wide beams with the smallest signal quality, the ID information corresponding to the M wide beams and the ID of the wide beam and the RSRP value corresponding to each of the M wide beams can be further determined. For example, if M is equal to 1, then the M wide beams here may be the widest beam with the smallest RSRP.
  • a condition for determining whether a certain wide beam belongs to the M wide beams may be expressed as:
  • the ID information corresponding to the M wide beams and the ID of the wide beam and the RSRP value corresponding to each of the M wide beams can be further determined.
  • the first threshold here may be configured by a network device, and the terminal is notified in a broadcast channel.
  • the wide beam terminal sends the first beam feedback information to the network device.
  • the first beam feedback information includes information of a first wide beam and information of M wide beams.
  • the wide beam terminal After determining the first wide beam to be used and the M wide beams satisfying the first condition through S502, the wide beam terminal sends the first beam feedback information including the information of the first wide beam and the information of the M wide beams to
  • the network device is configured to enable the network device to receive the first beam feedback information, and thereby obtain, according to the first beam feedback information, information of the first wide beam to be used and information of the M wide beams selected by the wide beam terminal.
  • the narrow-beam terminal determines, among the candidate wide beams, information about the second wide beam determined by the narrow-beam terminal and information about N wide beams whose signal quality meets the second condition.
  • N is an integer greater than or equal to 1.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • the second wide beam determined by it can be understood as the widest beam with the largest measured RSRP, that is, the widest beam with the best signal quality; the N wide beams determined can be understood as M wide beams in the candidate wide beam that have less interference with the second wide beam.
  • the information of the second wide beam may include the RSRP of the second wide beam, and of course, the ID information of the second wide beam may also be included.
  • the information of each wide beam in the information of the N wide beams is also The RSRP of the wide beam may be included, and of course, the ID of the wide beam may also be included.
  • the narrow-beam terminal can perform RSRP measurement on each of the candidate wide beams, thereby selecting the widest beam with the largest RSRP in the candidate wide beam.
  • the widest beam with the largest RSRP is determined as the second wide beam.
  • the N wide beams with the smallest signal quality or the N wide beams with a signal quality less than the first threshold are selected from the candidate wide beams and determined. N wide beams to satisfy the second condition.
  • the second threshold may be set according to actual needs. Here, the number of the second threshold is not limited in the embodiment of the present application.
  • the manner in which the narrow-beam terminal determines the second wide beam and the N wide beams that satisfy the second condition is the same as the wide-beam terminal in S502 described above determines the first wide beam and meets the first condition.
  • the manners of the M wide beams are similar, and reference may be made to the foregoing description of the wide beam terminal determining the first wide beam and the M wide beams satisfying the first condition in S502, and details are not described in the embodiment of the present application.
  • the narrow-beam terminal sends second beam feedback information to the network device.
  • the second beam feedback information includes information of a second wide beam and information of N wide beams.
  • the narrow-beam terminal determines the second wide beam and the N wide beams that satisfy the second condition through S504, it sends the second beam feedback information including the information of the second wide beam and the information of the N wide beams to the network device.
  • the network device is caused to receive the second beam feedback information, so as to obtain the information of the second wide beam and the information of the N wide beams according to the second beam feedback information.
  • S502-S503 there is no sequence between S502-S503 and S504-S505.
  • S502-S503 may be executed first, and then S504-S505 may be executed.
  • S504-S505 After S501, execute S504-S505 first, and then execute S502-S503.
  • the embodiment of this application is only after executing S501.
  • S502-S503 can be executed first, and then S504-S505 is executed as an example for description, but it does not mean that the embodiment of the present application is limited to this.
  • the network device may further perform the following S506:
  • the network device scans a candidate narrow beam covered by a second wide beam used for downlink transmission.
  • the candidate narrow beam can be understood as a narrow beam to be used by a network device for downlink transmission.
  • the network device scans the candidate narrow beam to the narrow beam terminal, so that the narrow beam terminal can measure the candidate narrow beam covered by the second wide beam, thereby performing the following S507-S508:
  • the narrow-beam terminal determines a first narrow beam to be used by the narrow-beam terminal from among the candidate narrow beams covered by the second wide-beam.
  • the first narrow beam can be understood as a narrow beam to be used by a narrow beam terminal.
  • the first narrow beam may be a narrow beam with the largest RSRP among all candidate narrow beams covered by the second wide beam measured by the narrow beam terminal.
  • the information of the first narrow beam may include RSRP of the first narrow beam, and of course, information such as the ID of the first narrow beam may also be included.
  • the narrow-beam terminal sends information about the first narrow beam to be used by the narrow-beam terminal to the network device.
  • the narrow-beam terminal determines the information of the first narrow beam to be used through S507, it sends the information of the first narrow beam to the network device, so as to obtain the information of the first narrow beam to be used.
  • the network device After the network device obtains the first beam feedback information, the second beam feedback information, and the first narrow beam information sent by the wide-beam terminal through the foregoing S501-S508, the network device may according to the first beam feedback information and the second beam feedback information And the first narrow beam information to determine whether to transmit downlink data to the wide beam terminal and the narrow beam terminal.
  • the following can be specifically performed through S509 -S510 implementation.
  • the network device determines the respective signal trunks of the wide beam terminal and the narrow beam terminal. ratio.
  • the network device can determine the signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal, and determine whether they are in the first narrow-beam according to the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal.
  • Downlink data is transmitted upward to the narrow beam terminal, and downlink data is transmitted to the wide beam terminal on the first wide beam.
  • the network device may first determine the product of the RSRP of the parent beam of the first narrow beam of the M wide beams and the parameter; where the parameter is the square of the maximum gain difference; and The signal-to-interference ratio of the wide beam terminal is determined according to the ratio of the RSRP and the product of the first wide beam.
  • SIR w represents the signal-to-interference ratio of the wide-beam terminal W-UE
  • C represents the maximum gain difference between the wide beam and the narrow beam.
  • the network device may determine the signal-to-interference ratio of the narrow-beam terminal according to the ratio of the RSRP of the first narrow-beam to the RSRP of the first wide-beam of the N wide beams.
  • the network device determines to transmit downlink data to the narrow-beam terminal on the first narrow beam, and to The wide beam terminal transmits downlink data.
  • the third threshold may be set as needed.
  • the size of the third threshold is not further limited in the embodiment of the present application.
  • the network device can schedule the wide beam terminal and the narrow beam terminal at the same time to determine the direction on the first narrow beam.
  • the narrow beam terminal transmits downlink data, and transmits the downlink data to the wide beam terminal on the first wide beam.
  • the widest beam corresponding to the smallest RSRP in the M wide beam sets ⁇ w (a set of M wide beams in the first beam feedback information) sent by the wide beam terminal to the network device is
  • the narrowest corresponding RSRP wide beam in the N wide beam set ⁇ N (the set of N wide beams in the second beam feedback information) sent by the narrow beam terminal to the network device is Then the network device can give priority to meeting versus The wide-beam terminal and the narrow-beam terminal are scheduled together.
  • the signal-to-interference ratio of the scheduled wide-beam terminal and the narrow-beam terminal reaches the maximum at the same time, so that downlink data is transmitted to the narrow-beam terminal on the first narrow beam, and A wide beam transmits downlink data to a wide beam terminal.
  • the network device After the network device obtains the first beam feedback information, the second beam feedback information, and the first narrow beam information through the above S501-S508, respectively, when the parent beam of the first narrow beam is any one of the M wide beams, and When the first wide beam is any of the N wide beams, determine the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal; if both the signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal are greater than the third threshold , It is determined that downlink data is transmitted to the narrow beam terminal on the first narrow beam, and downlink data is transmitted to the wide beam terminal on the first wide beam.
  • the downlink data transmission method provided in the embodiment of the present application directly determines whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information. Compared with the prior art, there is no need to send an additional orthogonal reference signal for interference measurement, thereby reducing the resource overhead caused by the reference signal and reducing the delay caused by the interference measurement.
  • the network equipment is equipped with two antenna arrays, of which the wide-beam antenna array is equipped with 4 antennas, and the narrow-beam antenna array is equipped with 16 antennas.
  • the beamforming capability of the terminal can be ignored.
  • the channel uses a 80% probability as a line-of-sight (LoS) channel and a 20% probability as a non-line-of-sight (NLoS) channel.
  • LoS line-of-sight
  • NNLoS non-line-of-sight
  • h LOS indicates a channel with a direct path
  • h NLOS indicates a channel with a non-direct path
  • ⁇ indicates a large-scale fading coefficient
  • K R indicates a Rice channel K factor
  • ⁇ indicates a channel departure angle
  • d indicates Antenna pitch vector.
  • the method for transmitting downlink data includes receiving first beam feedback information from a wide beam terminal, where the first beam feedback information includes information and signal quality of a first wide beam to be used by the wide beam terminal to satisfy the first Information of M wide beams under conditions; receiving second beam feedback information from the narrow beam terminal; wherein the second beam feedback information includes information of the second wide beam determined by the narrow beam terminal and N wide beams whose signal quality satisfies the second condition Beam information; and receive the first narrow beam information to be used by the narrow beam terminal from the narrow beam terminal, where the first narrow beam is a narrow beam covered by the second wide beam; in this way, the first beam feedback information, the first The two-beam feedback information and the first narrow-beam information determine whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal.
  • the above-mentioned embodiment shown in FIG. 5 describes in detail in a first scenario how to determine whether to move to a wide-beam terminal and a narrow-beam terminal when the wide-beam terminal to be used and the narrow-beam terminal to be used do not overlap with each other.
  • Technical solution for transmitting downlink data it should be noted that, in the embodiment shown in FIG. 5, after performing S508, that is, the network device obtains the first beam feedback information, the second beam feedback information, and the first narrow beam information sent by the wide beam terminal. After that, whether to transmit downlink data to the wide beam terminal and the narrow beam terminal can be determined according to the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the parent beam of the first narrow beam is M wide
  • any of the beams and the first wide beam is any of the N wide beams
  • S509-S510 can be performed.
  • the respective signal-to-interference ratios determine whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal.
  • the parent beam of the first narrow beam is not any of the M wide beams, and the parent beam of the first narrow beam is the first wide beam, it means that there is an overlap between the first wide beam and the first narrow beam
  • the second scenario shown in the embodiment of the present application please refer to FIG. 4.
  • FIG. 7 is a schematic diagram of another method for transmitting downlink data according to an embodiment of the present application.
  • the method for transmitting downlink data Can include:
  • the network device scans the candidate narrow beam covered by the first wide beam used for downlink transmission.
  • the candidate narrow beam is sent by the network device when it is determined that the parent beam of the first narrow beam to be used by the narrow beam terminal is the first wide beam.
  • the candidate narrow beam can be understood as a narrow beam to be used by the network device for downlink transmission.
  • the network device may further The terminal scans the candidate narrow beams covered by the first wide beam, so that the wide beam terminal can measure each narrow beam of the candidate narrow beams covered by the first wide beam, thereby performing the following S702-S703:
  • the wide-beam terminal determines information of P narrow beams whose signal quality satisfies a third condition from among the narrow beam candidates.
  • the P narrow beams are P narrow beams whose signal quality is less than a third threshold in the candidate narrow beams covered by the first wide beam used for downlink transmission.
  • the third threshold may be set according to actual needs.
  • the number of the third threshold is not limited in the embodiment of the present application.
  • a wide beam terminal when determining P narrow beams, can measure channel quality among them, Represents the receiving beam of a wide-beam terminal, and h NW indicates the channel that the network device sends to the wide-beam terminal through a narrow beam. If the channel quality of a certain narrow beam is smaller than the third threshold value, it is determined that the narrow beam is one of the P narrow beams, so as to determine the narrow beams of which P signal quality is less than the third threshold value. After determining the P narrow beams of the narrow beam whose signal quality is less than the third threshold, the ID corresponding to the P narrow beams and the RSRP value corresponding to each of the P narrow beams may be further determined.
  • the information of each narrow beam in the information of the P narrow beams in the third condition may also include the RSRP of the narrow beam, and of course, the ID of the narrow beam may also be included. For example, if P is equal to 1, then the P wide beams here may be narrow beams with the smallest RSRP.
  • S703 The wide beam terminal sends a third beam feedback message to the network device.
  • the third beam feedback message includes information of P narrow beams.
  • the narrow beam terminal After determining the information of the P narrow beams whose signal quality satisfies the third condition among the candidate narrow beams through S703, the narrow beam terminal sends the third feedback information including the information of the P narrow beams satisfying the third condition to the network device. To enable the network device to receive the third beam feedback information, so as to obtain the information of the P narrow beams determined by the wide beam terminal according to the third beam feedback information.
  • the network device stops scanning the candidate narrow beams under the first wide beam coverage for downlink transmission.
  • the fifth threshold may be set according to actual needs.
  • the size of the fifth threshold is not further limited in the embodiment of the present application. It should be noted that, in the embodiment of the present application, when the fifth threshold value is 1, the wide beam terminal stops scanning after measuring any narrow beam whose RSRP is less than a set threshold.
  • the network device determines whether P is greater than or equal to the fifth threshold after receiving the third feedback information including information of P narrow beams that meet the third condition sent by the narrow-beam terminal, and stops scanning if it is greater than or equal to the fifth threshold
  • the candidate narrow beam covered by the first wide beam for downlink transmission and performs the following S705:
  • the network device determines respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal.
  • the network device can still determine the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal, and determine whether to transmit downlink data to the narrow-beam terminal on the first narrow beam according to the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal. And transmitting downlink data to the wide beam terminal on the first wide beam.
  • the network device may determine the signal-to-interference ratio of the wide-beam terminal according to the ratio of the RSRP of the first wide-beam to the RSRP of the first narrow-beam among the P wide beams.
  • the signal-to-interference ratio of the narrow-beam terminal may be determined according to a ratio of the RSRP of the first narrow-beam to the RSRP of the first wide-beam among the N wide beams.
  • the parent beam f W (N) of the N-UE in the overlapping scenario is the same as the wide beam f w of the W-UE.
  • SIR N represents the signal-to-interference ratio of the narrow-beam terminal
  • the signal-to-interference ratio of the N-UE is relatively stable, which is approximately equal to the gain difference between the narrow beam and the wide beam.
  • the terminal cannot determine the interference situation of the first narrow beam to the wide beam terminal, and thus cannot calculate the signal-to-interference ratio of the wide beam terminal.
  • the network device determines not to transmit downlink data to the narrow beam terminal on the first narrow beam, and does not transmit downlink data to the wide beam terminal on the first wide beam.
  • the fourth threshold may be set as required.
  • the size of the fourth threshold is not further limited in the embodiment of the present application.
  • the network device can schedule the wide beam terminal and the narrow beam terminal at the same time to determine the direction on the first narrow beam.
  • the narrow beam terminal transmits downlink data, and transmits the downlink data to the wide beam terminal on the first wide beam.
  • the narrow beam corresponding to the smallest RSRP among the P narrow beams ⁇ N (W) (a set of P narrow beams in the third beam feedback information ) sent by the wide beam terminal to the network device for Network devices can prioritize The wide-beam terminal and the narrow-beam terminal are scheduled together. At this time, the signal-to-interference ratio of the scheduled wide-beam terminal and the narrow-beam terminal reaches the maximum at the same time.
  • a wide beam transmits downlink data to a wide beam terminal.
  • the network equipment is equipped with two antenna arrays, of which the wide beam antenna array is equipped with 4 antennas, and the narrow beam antenna array is equipped with 16 antennas for downlink multi-user MIMO transmission.
  • the channel uses a 80% probability as a line-of-sight (LoS) channel and a 20% probability as a non-line-of-sight (NLoS) channel.
  • LoS line-of-sight
  • NNLoS non-line-of-sight
  • FIG. 8 which is provided in this embodiment of the present application.
  • Another relationship between the spectral efficiency of a wide-beam terminal and a narrow-beam terminal as a function of the signal-to-noise ratio can be seen in conjunction with FIG. 8, which considers two modes of correlated transmission and non-correlated transmission.
  • the downlink data transmission method has significantly improved performance, which indicates that the technical scheme shown in the embodiment of the present application can effectively reduce interference between terminals and improve the signal-to-interference ratio of the terminals.
  • the wide beam terminal in an overlapping scenario, is further scanned for the candidate narrow beam, so that the wide beam terminal measures and feeds back the P narrow beams that satisfy the third condition.
  • the network device can calculate the signal-to-interference ratio of the wide beam and narrow beam terminals to be scheduled according to the third beam feedback information of the wide beam feedback, the second beam feedback information of the narrow beam feedback, and the information of the first narrow beam, and according to the calculated The signal-to-interference ratio determines whether to transmit downlink data to the wide beam terminal and the narrow beam terminal.
  • the network device first scans the candidate wide beams for downlink transmission.
  • the candidate wide beams are wide beam 1, wide beam 2, wide beam 3, wide beam 4, and wide beam 5, respectively.
  • After measuring the beam determine the widest beam 1 with the largest RSRP measured as the first wide beam to be used, and determine the wide beam 2 and wide beam 3 with the smaller RSRP as the two wide beams that meet the first condition. And sending first beam feedback information to the network device.
  • the first beam feedback information may include RSRP of wide beam 1, ID of wide beam 1, RSRP of wide beam 2, ID of wide beam 2, RSRP of wide beam 3, and wide ID of beam 3.
  • the wide beam terminal 2 After the wide beam terminal 2 also measures these candidate wide beams, it determines the widest beam 2 with the largest RSRP measured as the first wide beam to be used, and determines the wide beams 1 and 4 with the smaller RSRP.
  • the first beam feedback information may include RSRP of wide beam 2, ID of wide beam 2, RSRP of wide beam 1, wide beam ID of 1, RSRP of wide beam 4, and ID of wide beam 4.
  • the narrow beam terminal 1 After the narrow beam terminal 1 measures these candidate wide beams, it determines the widest beam 1 with the largest RSRP measured as the second wide beam, and determines the wide beam 3 with the smaller RSRP as a wide beam that meets the first condition.
  • Beam, and sends second beam feedback information to the network device the second beam feedback information may include RSRP of wide beam 1, ID of wide beam 1, RSRP of wide beam 3, and ID of wide beam 3; the network device receives a narrow beam After the second beam feedback information fed back by the beam terminal 1, the candidate narrow beams covered by the wide beam 1 used for downlink transmission are scanned, and the candidate narrow beams are narrow beam 11, narrow beam 12, narrow beam 13 and narrow beam, respectively.
  • the narrow beam terminal 1 measures these candidate narrow beams, determines the narrow beam 12 with the largest RSRP measured as the first narrow beam to be used, and sets the RSRP of the first narrow beam 12 and the first narrow beam 12
  • the ID of the narrow beam 12 is transmitted to the network device.
  • the narrow beam terminal 2 After the narrow beam terminal 2 measures these candidate wide beams, it determines the widest beam 4 with the largest RSRP measured as the second wide beam, and determines the wide beam 1 and the wide beam 2 with the smaller RSRP to satisfy the first condition. And send second beam feedback information to the network device.
  • the second beam feedback information may include RSRP of wide beam 4, ID of wide beam 4, RSRP of wide beam 1, ID of wide beam 1, RSRP of beam 2 and ID of wide beam 2; after receiving the second beam feedback information fed back by the narrow beam terminal 2 from the network device, the candidate narrow beam covered by the wide beam 4 used for downlink transmission is scanned.
  • the beams are narrow beam 41, narrow beam 42, narrow beam 43 and narrow beam 44.
  • narrow beam terminal 4 measures these candidate narrow beams, it determines the narrow beam 42 with the largest RSRP measured as the first to be used. A narrow beam, and sends the RSRP of the first narrow beam 42 and the ID of the first narrow beam 42 to the network device.
  • the network device After receiving the above information fed back by the wide-beam terminal 1, the wide-beam terminal 2, the narrow-beam terminal 1, and the narrow-beam terminal 2, the network device will change the wide-beam terminal 1, the wide-beam terminal 2, the narrow-beam terminal 1, and the narrow-beam terminal. 2 Perform a pairwise combination, and determine whether the signal-to-interference ratio of the two terminals after the pairwise combination meets the conditions, and then determine whether the two terminals can schedule at the same time.
  • the first combination is wide beam terminal 1 and narrow beam terminal 1
  • the second combination is wide beam terminal 1 and narrow beam terminal 2
  • the third combination is wide beam 2 and narrow beam 1
  • the fourth combination is wide beam 2 and narrow beam 2.
  • the wide beam 1 to be used by the wide beam terminal 1 is one of the wide beams fed back by the narrow beam terminal 2 and meeting the second condition, and the narrow beam terminal 2 can be determined.
  • the narrow beam 42 to be used has less interference with the wide beam terminal 1, but the parent beam of the narrow beam 42 to be used by the narrow beam terminal 2 is not the wide beam 4 of the wide beam terminal 1 that meets the first condition.
  • the respective signal-to-interference ratios of the wide beam terminal 1 and the narrow beam terminal 2 cannot be calculated. It cannot be determined whether the wide beam terminal 1 and the narrow beam terminal 2 can be scheduled at the same time.
  • the wide beam can be determined.
  • the wide beam 2 to be used by the terminal 2 has less interference with the narrow beam 12 to be used by the narrow beam terminal 1, but the wide beam 2 to be used by the wide beam terminal 2 is not a wide beam satisfying the second condition fed back by the narrow beam terminal 1
  • One of them cannot determine the interference of the narrow beam 42 to be used by the narrow beam terminal 1 to the wide beam 2 to be used by the wide beam terminal 2, so it is impossible to calculate the respective signal trunks of the wide beam terminal 2 and the narrow beam terminal 1. Ratio, and thus it is impossible to determine whether the wide beam terminal 2 and the narrow beam terminal 1 can be scheduled at the same time.
  • the wide beam 2 to be used by the wide beam terminal 2 is one of the wide beams that the second beam terminal 2 satisfies the second condition, and the width to be used by the wide beam terminal 2 can be determined.
  • the interference of beam 2 on the narrow beam 42 to be used by the narrow beam terminal 2 is small, and the parent beam of the narrow beam 42 to be used by the narrow beam terminal 2 is the wide beam 4 which is a wide beam that meets the first condition and is fed back by the wide beam terminal 2.
  • the narrow beam 42 to be used by the narrow beam terminal 2 has less interference with the wide beam 2 to be used by the wide beam terminal 2, and at this time, the respective signal-to-interference ratios of the wide beam terminal 2 and the narrow beam terminal 2 can be calculated. If both the signal-to-interference ratios of the wide-beam terminal 2 and the narrow-beam terminal 2 are greater than the third threshold, it is determined that the wide-beam terminal 2 and the narrow-beam terminal 2 can be scheduled at the same time, that is, the wide-beam terminal 2 can be directed to the wide-beam terminal 2 Transmitting downlink data and transmitting downlink data to the narrow beam terminal 2 on the narrow beam 42.
  • there is no need to send an additional orthogonal reference signal for interference measurement thereby reducing the resource overhead caused by the reference signal.
  • the parent beam of the narrow beam 12 to be used by the narrow beam terminal 1 is the wide beam 1
  • the parent beam of the narrow beam 12 to be used by the narrow beam terminal 1 is the wide beam terminal 1 to be used.
  • Wide beam 1 it is determined that there is an overlap between the narrow beam 12 to be used by the narrow beam terminal 1 and the wide beam 1 to be used by the wide beam terminal 1.
  • the network device can further scan the coverage of the wide beam 1 used for downlink transmission.
  • Candidate narrow beams which are narrow beam 11, narrow beam 12, narrow beam 13, and narrow beam 14, respectively. After narrow beam terminal 1 measures these alternative narrow beams, the measured signal quality is small.
  • the three narrow beams are determined as P narrow beams that satisfy the third condition.
  • the three narrow beams are narrow beam 12, narrow beam 13, and narrow beam 14, and send third beam feedback information to the network device.
  • the beam feedback information may include the RSRP of the narrow beam 12, the ID of the narrow beam 12, the RSRP of the narrow beam 13, the ID of the narrow beam 13, the RSRP of the narrow beam 14, and the ID of the narrow beam 14; the network device receives feedback from the narrow beam terminal 1 Third beam feedback information After that, it can be determined that the narrow beam 12 to be used by the narrow beam terminal 1 is one of the three narrow beams that satisfy the third condition and fed back by the wide beam terminal 1, indicating that the narrow beam 12 to be used by the narrow beam terminal 1 is to the wide beam terminal 1.
  • the narrow beam 12 to be used by the narrow beam terminal 1 has little interference with the wide beam 1 to be used by the wide beam terminal 1.
  • the wide beam terminal 1 and the narrow beam terminal can be calculated. 1 for the respective signal-to-interference ratio. If the signal-to-interference ratios of the wide-beam terminal 1 and the narrow-beam terminal 1 are both greater than the fourth threshold, it is determined that the wide-beam terminal 1 and the narrow-beam terminal 1 can be scheduled at the same time, that is, the wide-beam terminal 1 Downlink data is transmitted upward to the wide beam terminal 1 and downlink data is transmitted to the narrow beam terminal 1 on the narrow beam 12.
  • there is no need to send additional orthogonal reference signals for interference measurement thereby reducing the reference signal band. In addition, it can reduce the resource cost and reduce the delay caused by interference measurement.
  • FIG. 9 is a schematic structural diagram of a network device 90 according to an embodiment of the present application.
  • the network device 90 may include:
  • the receiving unit 901 is configured to receive first beam feedback information from a wide-beam terminal.
  • the first beam feedback information includes information of a first wide beam to be used by the wide-beam terminal and a signal quality of M wide beams that meets a first condition.
  • Information, M is an integer greater than or equal to 1.
  • the receiving unit 901 is further configured to receive second beam feedback information from a narrow-beam terminal, where the second beam feedback information includes information of a second wide beam determined by the narrow-beam terminal and a signal quality of N wide beams that meets a second condition.
  • Information, N is an integer greater than or equal to 1.
  • the receiving unit 901 is further configured to receive information of a first narrow beam to be used by the narrow beam terminal from the narrow beam terminal, where the first narrow beam is a narrow beam covered by a second wide beam.
  • a determining unit 902 is configured to determine whether to transmit downlink data to a wide beam terminal and a narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams are the M wide beams whose signal quality is less than the first threshold in the candidate wide beams. Beam.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • the determining unit 902 is specifically configured to determine the wide-beam terminal and the wide-beam terminal when the parent beam of the first narrow beam is any of the M wide beams and the first wide beam is any of the N wide beams.
  • the information of the first wide beam includes the reference signal received power RSRP of the first wide beam
  • the information of the first narrow beam includes the RSRP of the first narrow beam
  • the determining unit 902 is specifically configured to determine the first of the M wide beams.
  • the product of the RSRP and the parameter of the parent beam of a narrow beam; where the parameter is the square of the maximum gain difference; and the signal-to-interference ratio of the wide beam terminal is determined according to the ratio of the RSRP of the first wide beam to the product.
  • the determining unit 902 is further specifically configured to determine the signal-to-interference ratio of the narrow-beam terminal according to the ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam among the N wide beams.
  • the determining unit 902 is specifically configured to receive a third beam feedback message from the wide beam terminal when the parent beam of the first narrow beam is the first wide beam; the third beam feedback message includes that the signal quality satisfies a third condition Information of P narrow beams; P is an integer greater than or equal to 1; determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam according to the first narrow beam and third beam feedback messages, and in the first wide beam The downlink data is transmitted up to the wide beam terminal.
  • the P narrow beams are P narrow beams whose signal quality is less than a third threshold in the candidate narrow beams covered by the first wide beam used for downlink transmission.
  • the determining unit 902 is specifically configured to determine the signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal if the first narrow-beam is any of the P narrow-beams; If the signal-to-interference ratio of the narrow beam terminal is greater than the fourth threshold, it is determined that downlink data is transmitted to the narrow beam terminal on the first narrow beam, and downlink data is transmitted to the wide beam terminal on the first wide beam.
  • the information of the first wide beam includes the RSRP of the first wide beam
  • the information of the first narrow beam includes the RSRP of the first narrow beam
  • the determining unit 902 is specifically configured to use the RSRP of the first wide beam and P narrow
  • the ratio of the RSRP of the first narrow beam in the beam determines the signal-to-interference ratio of the wide-beam terminal
  • the signal-to-interference ratio of the narrow beam terminal is determined based on the ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam of the N wide beams. ratio.
  • the determining unit 902 is further configured to determine that if the first narrow beam is not any of the P narrow beam information, downlink data is not transmitted to the narrow beam terminal on the first narrow beam and is not on the first wide beam. The downlink data is transmitted up to the wide beam terminal.
  • the network device 90 may further include a scanning unit 903.
  • FIG. 10 is a schematic structural diagram of another network device 90 according to an embodiment of the present application.
  • the scanning unit 903 is configured to stop scanning the candidate narrow beam covered by the first wide beam for downlink transmission if P is greater than or equal to the fifth threshold.
  • the scanning unit 903 is further configured to scan a candidate narrow beam covered by a first wide beam used for downlink transmission.
  • the network device 90 shown in this embodiment of the present invention can execute the technical solution of the method for transmitting downlink data on the network device 90 side in any of the foregoing embodiments.
  • the implementation principles and beneficial effects are similar, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of a wide beam terminal 110 according to an embodiment of the present application.
  • the wide beam terminal 110 may include:
  • a determining unit 1101 is configured to determine, when receiving the candidate wide beam scanned by the base station for downlink transmission, that the information and signal quality of the first wide beam to be used by the wide beam terminal 110 meet the first condition in the candidate wide beam.
  • Information of M wide beams, M is an integer greater than or equal to 1.
  • the sending unit 1102 is configured to send first beam feedback information to the base station, where the first beam feedback information includes information of the first wide beam and information of the M wide beams.
  • the M wide beams are M wide beams having the smallest signal quality among the candidate wide beams; or, the M wide beams are M wide beams among which the signal quality is less than the first threshold.
  • the wide beam terminal 110 may further include a receiving unit 1103.
  • FIG. 12 is a schematic structural diagram of another wide beam terminal 110 according to an embodiment of the present application.
  • the receiving unit 1103 is configured to receive a candidate narrow beam under the coverage of the first wide beam scanned by the base station for downlink transmission.
  • the candidate narrow beam is the base beam of the first narrow beam that the base station determines to be used by the narrow beam terminal as the first narrow beam. Sent with a wide beam.
  • the determining unit 1101 is further configured to determine, among the candidate narrow beams, information of P narrow beams whose signal quality satisfies a third condition; P is an integer greater than or equal to 1.
  • the sending unit 1102 is further configured to send a third beam feedback message to the base station; the third beam feedback message includes information of P narrow beams.
  • the P narrow beams are P narrow beams in which the signal quality of the candidate narrow beams is less than a third threshold.
  • the wide-beam terminal 110 shown in the embodiment of the present invention can execute the technical solution of the method for transmitting downlink data on the wide-beam terminal 110 side in any of the foregoing embodiments.
  • the implementation principles and beneficial effects are similar, and will not be performed here. To repeat.
  • FIG. 13 is a schematic structural diagram of a narrow beam terminal 130 according to an embodiment of the present application.
  • the narrow beam terminal 130 may include:
  • a determining unit 1301 is configured to determine, when receiving the candidate wide beam scanned by the base station for downlink transmission, information and signal quality of the second wide beam determined by the narrow beam terminal 130 in the candidate wide beam that meet the second condition.
  • the sending unit 1302 is configured to send second beam feedback information to the base station, where the second beam feedback information includes information of a second wide beam and information of N wide beams.
  • the determining unit 1301 is further configured to determine that the narrow-beam terminal 130 is to be selected from the candidate narrow beams covered by the second wide beam when the candidate narrow beams covered by the second wide beam for downlink transmission are received by the base station.
  • the first narrow beam used.
  • the sending unit 1302 is further configured to send information of the first narrow beam to be used by the narrow beam terminal 130 to the base station.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • the narrow-beam terminal 130 shown in this embodiment of the present invention can execute the technical solution of the method for transmitting downlink data on the narrow-beam terminal 130 side in any of the foregoing embodiments.
  • the implementation principles and beneficial effects are similar, and will not be performed here. To repeat.
  • FIG. 14 is a schematic structural diagram of still another network device 140 according to an embodiment of the present application.
  • the network device 140 may include:
  • the receiver 1401 is configured to receive first beam feedback information from a wide-beam terminal.
  • the first beam feedback information includes information of a first wide beam to be used by the wide-beam terminal and a signal quality of M wide beams that meets a first condition.
  • Information, M is an integer greater than or equal to 1.
  • the receiver 1401 is further configured to receive second beam feedback information from a narrow-beam terminal, where the second beam feedback information includes information of a second wide beam determined by the narrow-beam terminal and signal quality of N wide beams that meet a second condition.
  • Information, N is an integer greater than or equal to 1.
  • the receiver 1401 is further configured to receive information of a first narrow beam to be used by the narrow beam terminal from the narrow beam terminal, where the first narrow beam is a narrow beam covered by a second wide beam.
  • the processor 1402 is configured to determine whether to transmit downlink data to a wide beam terminal and a narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams are the M wide beams whose signal quality is less than the first threshold in the candidate wide beams. Beam.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • determining whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes: when the parent beam of the first narrow beam is M When any of the wide beams and the first wide beam is any of the N wide beams, determine the respective signal-to-interference ratios of the wide-beam terminal and the narrow-beam terminal; if the signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal are If the signal-to-interference ratio is greater than the third threshold, it is determined that downlink data is transmitted to the narrow beam terminal on the first narrow beam, and downlink data is transmitted to the wide beam terminal on the first wide beam.
  • the information of the first wide beam includes the reference signal received power RSRP of the first wide beam, and determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes determining the parent of the first narrow beam of the M wide beams.
  • the product of the RSRP of the beam and the parameter; where the parameter is the square of the maximum gain difference; and the signal-to-interference ratio of the wide-beam terminal is determined based on the ratio of the RSRP and the product of the first wide beam; according to the RSRP of the first narrow beam and N
  • the ratio of the RSRP of the first wide beam in the wide beam determines the signal-to-interference ratio of the narrow-beam terminal.
  • the receiver 1401 is further configured to receive a third beam feedback message from a wide beam terminal when the parent beam of the first narrow beam is the first wide beam; the third beam feedback message includes that the signal quality meets a third condition Information of P narrow beams; P is an integer greater than or equal to 1.
  • Determining whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes: determining whether to determine whether the Downlink data is transmitted to a narrow beam terminal on a narrow beam, and downlink data is transmitted to a wide beam terminal on a first wide beam.
  • determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam and transmitting the downlink data to the wide beam terminal on the first wide beam according to the first narrow beam and the third beam feedback message includes: A narrow beam is any one of the P narrow beams, and then determine the signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal; if both the signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal are greater than the fourth threshold, It is determined that downlink data is transmitted to the narrow beam terminal on the first narrow beam, and downlink data is transmitted to the wide beam terminal on the first wide beam.
  • the information of the first wide beam includes RSRP of the first wide beam
  • determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes: according to the RSRP of the first wide beam and the first narrow one of the P narrow beams.
  • the ratio of the RSRP of the beams determines the signal-to-interference ratio of the wide-beam terminal; and the signal-to-interference ratio of the narrow-beam terminal is determined according to the ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam of the N wide beams.
  • determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam and transmitting the downlink data to the wide beam terminal on the first wide beam according to the first narrow beam and the third beam feedback message further includes: If the first narrow beam is not any of the P narrow beam information, it is determined that downlink data is not transmitted to the narrow beam terminal on the first narrow beam, and downlink data is not transmitted to the wide beam terminal on the first wide beam.
  • the processor 1402 is further configured to, if P is greater than or equal to a fifth threshold, stop scanning for a candidate narrow beam covered by a first wide beam for downlink transmission.
  • the processor 1402 is further configured to scan a candidate narrow beam covered by a first wide beam used for downlink transmission.
  • the network device 140 shown in this embodiment of the present invention can execute the technical solution of the method for transmitting downlink data on the network device 140 side in any of the foregoing embodiments.
  • the implementation principles and beneficial effects of the method are similar, and details are not described herein again.
  • FIG. 15 is a schematic structural diagram of still another wide beam terminal 150 according to an embodiment of the present application.
  • the wide beam terminal 150 may include:
  • the processor 1501 is configured to determine, when receiving the candidate wide beam scanned by the base station for downlink transmission, that the information and signal quality of the first wide beam to be used by the wide beam terminal 150 meet the first condition in the candidate wide beam.
  • Information of M wide beams, M is an integer greater than or equal to 1.
  • the transmitter 1502 is configured to send the first beam feedback information to the base station, where the first beam feedback information includes information of the first wide beam and information of the M wide beams.
  • the M wide beams are M wide beams having the smallest signal quality among the candidate wide beams; or, the M wide beams are M wide beams among which the signal quality is less than the first threshold.
  • the wide-beam terminal 150 may further include a receiver 1503; the receiver 1503 is configured to receive a candidate narrow beam covered by a first wide beam for downlink transmission scanned by the base station; Sent when the parent beam of the first narrow beam to be used by the narrow beam terminal is determined to be the first wide beam.
  • the processor 1501 is further configured to determine, among the candidate narrow beams, information of P narrow beams whose signal quality meets a third condition; P is an integer greater than or equal to 1.
  • the transmitter 1502 is further configured to send a third beam feedback message to the base station; the third beam feedback message includes information of P narrow beams.
  • the wide-beam terminal 150 shown in the embodiment of the present invention can execute the technical solution of the method for transmitting downlink data on the wide-beam terminal 150 side shown in any of the foregoing embodiments.
  • the implementation principles and beneficial effects of the method are similar. To repeat.
  • FIG. 16 is a schematic structural diagram of still another narrow beam terminal 160 according to an embodiment of the present application.
  • the narrow beam terminal 160 may include:
  • the processor 1601 is configured to determine, when receiving the candidate wide beam scanned by the base station for downlink transmission, determining, among the candidate wide beams, the information and signal quality of the second wide beam determined by the narrow beam terminal 160 that meet the second condition.
  • the transmitter 1602 is configured to send second beam feedback information to the base station, where the second beam feedback information includes information of a second wide beam and information of N wide beams.
  • the processor 1601 is further configured to determine the narrow-beam terminal 160 to be selected from the candidate narrow beams covered by the second wide beam when the candidate narrow beams covered by the second wide beam for downlink transmission are received by the base station.
  • the first narrow beam used.
  • the transmitter 1602 is further configured to send information of the first narrow beam to be used by the narrow beam terminal 160 to the base station.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • the narrow-beam terminal 160 shown in this embodiment of the present invention can implement the technical solution of the method for transmitting downlink data on the narrow-beam terminal 160 side in any of the foregoing embodiments.
  • the implementation principles and beneficial effects of the method are similar, and will not be performed here. To repeat.
  • An embodiment of the present application further provides a communication system.
  • the communication system includes the network device, the wide-beam terminal, and the narrow-beam terminal shown in any of the foregoing embodiments.
  • the implementation principles and beneficial effects of the communication system are similar, and are not described herein again.
  • An embodiment of the present application further provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the downlink data on the network device side shown in any of the foregoing embodiments is executed.
  • the transmission method has similar implementation principles and beneficial effects, and is not repeated here.
  • An embodiment of the present application further provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the downlink data on the wide beam terminal side shown in any of the foregoing embodiments is executed. Or the implementation of the downlink data transmission method on the wide-beam terminal side shown in any one of the above embodiments, the implementation principles and beneficial effects of the method are similar, which are not described here again.
  • An embodiment of the present application further provides a circuit system, which may include a processing circuit.
  • the first beam feedback information is received from the wide beam terminal, the second beam feedback information is received from the narrow beam terminal, and the first narrow beam information to be used by the narrow beam terminal is received from the narrow beam terminal.
  • the first narrow beam is the second wide beam.
  • the processing circuit is configured to determine whether to transmit downlink data to the wide beam terminal and the narrow beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information;
  • the beam feedback information includes information of the first wide beam to be used by the wide beam terminal and information of M wide beams whose signal quality satisfies the first condition, where M is an integer greater than or equal to 1, and the second beam feedback information includes the determination of the narrow beam terminal.
  • the information of the second wide beam and the information of N wide beams whose signal quality satisfies the second condition, N is an integer greater than or equal to 1.
  • the M wide beams are the M wide beams with the smallest signal quality among the candidate wide beams used for downlink transmission; or, the M wide beams are the M wide beams whose signal quality is less than the first threshold in the candidate wide beams. Beam.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or, the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • determining whether to transmit downlink data to the wide-beam terminal and the narrow-beam terminal according to the first beam feedback information, the second beam feedback information, and the first narrow beam information includes:
  • the parent beam of the first narrow beam is any of the M wide beams
  • the first wide beam is any of the N wide beams
  • the information of the first wide beam includes the reference signal received power RSRP of the first wide beam, and determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes determining the parent of the first narrow beam of the M wide beams.
  • the product of the RSRP of the beam and the parameter; where the parameter is the square of the maximum gain difference; and the signal-to-interference ratio of the wide-beam terminal is determined based on the ratio of the RSRP of the first wide beam to the product; the RSRP of the first narrow beam and N
  • the ratio of the RSRP of the first wide beam in the wide beam determines the signal-to-interference ratio of the narrow-beam terminal.
  • the parent beam of the first narrow beam is a first wide beam
  • whether to transmit downlink data to the wide beam terminal and the narrow beam terminal is determined according to the first beam feedback information, the second beam feedback information, and the first narrow beam information
  • the method includes: determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam and transmitting downlink data to the wide beam terminal on the first wide beam according to the first narrow beam and the third beam feedback message, wherein the third beam feedback
  • the message includes information of P narrow beams whose signal quality meets the third condition; P is an integer greater than or equal to 1.
  • determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam according to the first narrow beam and the third beam feedback message includes: if the first narrow beam is any of the P narrow beams, determining The signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal; if both the signal-to-interference ratio of the wide-beam terminal and the narrow-beam terminal are greater than the fourth threshold, it is determined that downlink data is transmitted to the narrow-beam terminal on the first narrow beam And transmitting downlink data to the wide beam terminal on the first wide beam.
  • the information of the first wide beam includes RSRP of the first wide beam
  • determining the respective signal-to-interference ratios of the wide beam terminal and the narrow beam terminal includes: according to the RSRP of the first wide beam and the first narrow one of the P narrow beams.
  • the ratio of the RSRP of the beams determines the signal-to-interference ratio of the wide-beam terminal; and the signal-to-interference ratio of the narrow-beam terminal is determined according to the ratio of the RSRP of the first narrow beam to the RSRP of the first wide beam of the N wide beams.
  • determining whether to transmit downlink data to the narrow beam terminal on the first narrow beam according to the first narrow beam and third beam feedback messages further includes: if the first narrow beam is not any of the P narrow beam information , It is determined that downlink data is not transmitted to the narrow beam terminal on the first narrow beam, and downlink data is not transmitted to the wide beam terminal on the first wide beam.
  • the processing circuit is further configured to, if P is greater than or equal to a fifth threshold, stop scanning for a candidate narrow beam covered by a first wide beam for downlink transmission.
  • the processing circuit is further configured to scan a candidate narrow beam covered by a first wide beam used for downlink transmission.
  • the circuit system shown in the embodiment of the present invention can execute the technical solution of the method for transmitting downlink data on the network device side shown in any of the foregoing embodiments.
  • the implementation principle and beneficial effects are similar, and details are not described herein again.
  • An embodiment of the present application further provides a circuit system, which may include a processing circuit.
  • a processing circuit configured to determine, when receiving the candidate wide beam scanned by the base station for downlink transmission, in the candidate wide beam, the information and signal quality of the first wide beam to be used by the wide beam terminal satisfying the first condition M
  • M is an integer greater than or equal to 1.
  • the M wide beams are M wide beams having the smallest signal quality among the candidate wide beams; or, the M wide beams are M wide beams among which the signal quality is less than the first threshold.
  • the processing circuit is further configured to: after receiving the candidate narrow beam covered by the first wide beam for the downlink transmission scanned by the base station, determine in the candidate narrow beam that the signal quality satisfies the third condition P Information of narrow beams; P is an integer greater than or equal to 1; candidate narrow beams are sent by the base station when determining that the parent beam of the first narrow beam to be used by the narrow beam terminal is the first wide beam.
  • the wide beam terminal shown in the embodiments of the present invention can implement the technical solution of the method for transmitting downlink data on the wide beam terminal side shown in any of the foregoing embodiments.
  • the implementation principles and beneficial effects are similar, and details are not described herein again.
  • An embodiment of the present application further provides a circuit system, which may include a processing circuit.
  • a processing circuit configured to determine, when receiving candidate wide beams for downlink transmission scanned by a base station, information and signal quality of the second wide beam determined by the narrow beam terminal and satisfying the second condition among the candidate wide beams
  • N is an integer greater than or equal to 1.
  • the processing circuit is further configured to: after sending the second beam feedback information to the base station, when receiving the candidate narrow beam covered by the second wide beam for downlink transmission scanned by the base station, the Among the candidate narrow beams, the first narrow beam to be used by the narrow beam terminal is determined; wherein the second beam feedback information includes information of the second wide beam and information of N wide beams.
  • the N wide beams are the N wide beams with the smallest signal quality among the candidate wide beams; or the N wide beams are the N wide beams with the signal quality less than the second threshold in the candidate wide beam.
  • the narrow beam terminal shown in the embodiments of the present invention can execute the technical solution of the method for transmitting downlink data on the narrow beam terminal side shown in any of the foregoing embodiments.
  • the implementation principles and beneficial effects are similar, and details are not described herein again.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), or the like, which may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • Software modules can be located in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory or electrically erasable programmable memory, registers, etc.
  • Storage media The storage medium is located in the memory 1002, and the processor 1001 reads the instructions in the memory 1002 and completes the steps of the foregoing method in combination with its hardware.
  • the disclosed apparatus and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the above integrated unit may be implemented in the form of hardware, or in the form of hardware plus software functional units.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de transmission de données de liaison descendante, un dispositif de réseau et un terminal. Le procédé consiste : à recevoir des premières informations de rétroaction de faisceau en provenance d'un terminal à faisceau large, les premières informations de rétroaction de faisceau comprenant des informations d'un premier faisceau large devant être utilisé par le terminal à faisceau large et des informations de M faisceaux large ayant une qualité de signal qui satisfait une première condition, et M est un nombre entier supérieur ou égal à 1 ; à recevoir des secondes informations de rétroaction de faisceau à partir d'un terminal à faisceau étroit, les secondes informations de rétroaction de faisceau comprenant des informations d'un second faisceau large déterminé par le terminal à faisceau étroit et des informations de N faisceaux large ayant une qualité de signal qui satisfait une seconde condition, et N est un nombre entier supérieur ou égal à 1 ; à recevoir, à partir du terminal à faisceau étroit, des informations d'un premier faisceau étroit à utiliser par le terminal à faisceau étroit, le premier faisceau étroit étant un faisceau étroit recouvert par un second faisceau large ; et à déterminer, selon les premières informations de rétroaction de faisceau, les secondes informations de rétroaction de faisceau, et les informations du premier faisceau étroit, s'il faut transmettre des données de liaison descendante au terminal à faisceau large et au terminal à faisceau étroit. Le procédé réduit le surdébit et un retard temporel de mesure d'interférence pendant une transmission de données de liaison descendante.
PCT/CN2019/087689 2018-05-23 2019-05-21 Procédé de transmission de données de liaison descendante, appareil de réseau et terminal Ceased WO2019223665A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/057,462 US11395156B2 (en) 2018-05-23 2019-05-21 Downlink data transmission method, network device, and terminal

Applications Claiming Priority (4)

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CN201810504111.4 2018-05-23
CN201810504111 2018-05-23
CN201810893428.1A CN110535579B (zh) 2018-05-23 2018-08-07 下行数据的传输方法、网络设备及终端
CN201810893428.1 2018-08-07

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US7366463B1 (en) * 2000-05-05 2008-04-29 The Directv Group, Inc. Military UHF and commercial Geo-mobile system combination for radio signal relay
CN104956604A (zh) * 2013-01-31 2015-09-30 高通股份有限公司 基于虚拟仰角端口的3d mimo csi 反馈
CN106105073A (zh) * 2014-03-20 2016-11-09 株式会社Ntt都科摩 波束选择方法、基站以及用户装置

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US7366463B1 (en) * 2000-05-05 2008-04-29 The Directv Group, Inc. Military UHF and commercial Geo-mobile system combination for radio signal relay
CN104956604A (zh) * 2013-01-31 2015-09-30 高通股份有限公司 基于虚拟仰角端口的3d mimo csi 反馈
CN106105073A (zh) * 2014-03-20 2016-11-09 株式会社Ntt都科摩 波束选择方法、基站以及用户装置

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CN113055978A (zh) * 2021-05-31 2021-06-29 北京理工大学 通信接入方法、装置、设备和可读存储介质

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