WO2017041718A1 - Procédé, dispositif et système de transmission de données - Google Patents

Procédé, dispositif et système de transmission de données Download PDF

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Publication number
WO2017041718A1
WO2017041718A1 PCT/CN2016/098353 CN2016098353W WO2017041718A1 WO 2017041718 A1 WO2017041718 A1 WO 2017041718A1 CN 2016098353 W CN2016098353 W CN 2016098353W WO 2017041718 A1 WO2017041718 A1 WO 2017041718A1
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WO
WIPO (PCT)
Prior art keywords
base station
information
terminal
reference signal
measured
Prior art date
Application number
PCT/CN2016/098353
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English (en)
Chinese (zh)
Inventor
邓天乐
彭文杰
Original Assignee
华为技术有限公司
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680032346.7A priority Critical patent/CN107615821B/zh
Publication of WO2017041718A1 publication Critical patent/WO2017041718A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/38—Reselection control by fixed network equipment

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method, device, and system.
  • High-frequency resources are richer than low-frequency resources and have a larger bandwidth, which can effectively improve user equipment throughput.
  • the high-frequency station is arranged for the hotspot area within the coverage of the low-frequency macro station, which can effectively solve the hot-spot capacity problem, as shown in Fig. 1.
  • the signal wavelength of the high-frequency resource is shorter, and the antenna is placed at a half-wavelength interval as an example. At this time, the number of antennas that can be arranged per unit area is increased, which is to arrange a large-scale multiple input and multiple output (Massive Multiple).
  • Massive MIMO The Input Multiple Output, Massive MIMO
  • the prior art adopts Massive MIMO on a high frequency small station, and uses beamforming technology to provide services for user equipment of the small station covering the edge and improve its throughput.
  • Massive MIMO has more antennas, and beamforming technology uses the strong correlation of spatial channels and the interference principle of waves to generate strong directional radiation patterns.
  • the main lobe of the radiation pattern points to the user equipment. Thereby improving the signal to noise ratio and increasing system capacity or coverage.
  • a user equipment located at the edge of the coverage of the high-frequency small station can receive downlink data through the beam of the high-frequency small station, but the uplink of the UE is low due to low reliability of the high-frequency signal.
  • the signal cannot reach the high frequency station, so the high frequency station cannot be based on the UE.
  • the uplink feedback is for the UE to select a suitable beam for data transmission.
  • the embodiment of the invention provides a data transmission method, device and system, which solves the problem that the uplink signal of the UE cannot reach the high frequency station due to the low reliability of the high frequency signal, and the high frequency station cannot be based on the uplink feedback of the UE.
  • the problem of the UE selecting the appropriate beam for data transmission.
  • a data transmission method is applied to a communication system including a first base station and a second base station, the method comprising:
  • the first base station sends part or all of the downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal by using the target beam.
  • the method further includes:
  • the first base station receives information about a beam mode adopted by the second base station and sent by the second base station.
  • each beam corresponds to a different antenna port.
  • the information about the beam mode includes: first indication information indicating that a beam mode adopted by the second base station is a first beam mode, and antenna port information corresponding to each beam of the second base station;
  • the beam mode information includes: a second mode for indicating that the beam mode adopted by the second base station is the second beam mode.
  • the indication information and information of a time interval corresponding to each beam of the second base station.
  • the method further includes:
  • the first base station is configured by the terminal to perform measurement on each beam of the second base station. a reference signal, and transmitting configuration information of the reference signal to the terminal; or
  • the first base station obtains, in a beam of the second base station, a terminal that can serve the terminal that has accessed the first base station Target beam, including:
  • the first base station determines the target beam based on the measurement information reported by the terminal, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station; or
  • the target beam based on the measurement information reported by the terminal and the received load information on each beam of the second base station sent by the second base station, where the measurement The information is obtained by the terminal measuring a reference signal on each beam of the second base station.
  • the obtaining, before the target beam of the terminal that has accessed the first base station, in the beam of the second base station includes: the first base station transmitting the measurement information reported by the terminal to the second base station, where the measurement information is a reference signal of the terminal to different beams of the second base station Obtained by measurement;
  • the second base station is fixed by using the first beam mode, Each beam corresponds to a different antenna port, and the measurement information includes:
  • the measured value obtained by the terminal for measuring the reference signal is greater than or equal to the set measurement gate a limited measurement value and identification information of the corresponding antenna port; or all measurement values obtained by the terminal to the reference signal and identification information of the corresponding antenna port; or the terminal measures the reference signal
  • the maximum measured value of the measured value and the identifier information of the corresponding antenna port; or the identification information of the first N largest measured values and corresponding antenna ports of the measured values measured by the terminal on the reference signal, N is Positive integer
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal are different.
  • the first base station is co-station with the second base station, and the first base station obtains, in the beam of the second base station, that the service can be accessed.
  • the target beam of the terminal of the first base station includes:
  • the first base station compares the current measured DOA between the terminal and the first base station with a saved DOA; the first base station determines from the saved DOA Determining, by the DOA of the current DOA of the terminal, a DOA having the smallest difference, and determining the determined beam corresponding to the DOA as the target beam; or
  • the first base station compares the currently measured incoming DOA between the terminal and the first base station with a saved different DOA range; the first base station determines the current DOA of the terminal. a DOA range in which the part or all of the beams corresponding to the determined DOA range are determined as the target beam; or
  • the first base station compares the currently measured path loss information and DOA between the terminal and the first base station with a saved combination of each set of path loss information and DOA; a base station determines, from the saved combination, a combination that is respectively the smallest difference between the current path loss information and the DOA of the terminal, and determines the determined beam corresponding to the combination as the target beam; or
  • the first base station compares the currently measured path loss information and DOA between the terminal and the first base station with a range of combinations of saved different path loss information and DOA;
  • the base station determines a range of the combination of the current path loss information of the terminal and the DOA, and determines part or all of the beams corresponding to the determined combined range as the target beam.
  • the first base station is co-station with the second base station, and the first base station obtains, in the beam of the second base station, that the service can be accessed.
  • the target beam of the terminal of the first base station includes:
  • the first base station sends the information currently measured by the first base station to the second base station, where the information currently measured by the first base station includes at least the terminal and the first base station.
  • DOA
  • the first base station receives information about a target beam formed by the second base station that is sent by the second base station, and determines a target beam corresponding to the information of the target beam.
  • the method further includes:
  • the first base station sends the information of the target beam and the identification information of the terminal to the second base station.
  • the method further includes:
  • the first base station sends information of the target beam to the terminal.
  • the method further includes:
  • the first base station sends the received beam mode information used by the second base station to the terminal.
  • a data transmission method is applied to communication including a first base station and a second base station System, the method includes:
  • the second base station receives part or all of the downlink data of the terminal sent by the first base station, and sends the downlink data to the terminal by using the target beam.
  • the method further includes:
  • each beam corresponds to a different antenna port.
  • the information about the beam mode includes: first indication information indicating that a beam mode adopted by the second base station is a first beam mode, and antenna port information corresponding to each beam of the second base station;
  • the information of the beam mode includes: indicating that the beam mode adopted by the second base station is the second beam mode.
  • the method further includes:
  • the method further includes:
  • the second base station After receiving the configuration request sent by the first base station, the second base station configures, for the terminal, a reference signal for measurement on each beam of the second base station, and configures the reference signal. Information is sent to the first base station.
  • the second base station obtains a beam of the second base station A target beam capable of serving a terminal that has accessed the first base station, including:
  • the second base station receives the information of the target beam and the identification information of the terminal sent by the first base station to obtain the target beam.
  • the second base station obtains a beam of the second base station Before the target beam of the terminal that has accessed the first base station, the method further includes:
  • the second base station receives measurement information sent by the first base station, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station;
  • the method further includes: the second base station receiving, by the first base station, information that is currently measured by the first base station, where the first base station The currently measured information includes at least a DOA between the terminal and the first base station;
  • the second base station obtains, by the second base station, a target beam that is capable of serving a terminal that has accessed the first base station, where the second base station determines, according to the at least one information, the second base station The antenna weights of the two base stations to form a target beam capable of serving the terminal.
  • the second base station obtains the beam of the second base station After being able to serve the target beam of the terminal that has accessed the first base station, the method further includes:
  • the second base station sends the information of the target beam and the identification information of the terminal to the first base station.
  • the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal are different.
  • a base station is applied to a communication system including the base station and a second base station, where the base station includes:
  • a target beam obtaining module configured to obtain a target beam of a beam of the second base station capable of serving a terminal that has accessed the base station;
  • a sending module configured to send part or all of the downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal by using the target beam.
  • the base station further includes:
  • a receiving module configured to receive information about a beam mode adopted by the second base station by the second base station.
  • the beam mode information includes: first indication information indicating that a beam mode adopted by the second base station is a first beam mode, and antenna port information corresponding to each beam of the second base station;
  • the beam mode information includes: a second mode for indicating that the beam mode adopted by the second base station is the second beam mode.
  • the indication information and information of a time interval corresponding to each beam of the second base station.
  • the base station further includes: a reference signal configuration module And configured to configure, for the terminal, a reference signal for measurement on each beam of the second base station; the sending module is further configured to: send configuration information of the reference signal to the terminal;
  • the sending module is further configured to: send a configuration request to the second base station, to request the second base station to configure, by the second base station, a reference signal for measurement on each beam of the second base station;
  • the receiving module is further configured to: receive, by the second base station, configuration information of a reference signal for measurement configured by the terminal on all beams of the second base station; the sending module is further configured to: use the configuration Information is sent to the terminal.
  • the target beam obtaining module is specifically configured to:
  • Determining the target beam based on the measurement information reported by the terminal and the received load information on each beam of the second base station sent by the second base station, where the measurement information is the terminal Measuring the reference signal on each beam of the second base station.
  • the sending module is further configured to: send the measurement information reported by the terminal to the second base station, where the measurement information is that the terminal measures a reference signal on different beams of the second base station owned;
  • the receiving module is further configured to: receive information about a target beam sent by the second base station, to obtain the target beam.
  • the second base station is fixed by using the first beam mode, Each beam corresponds to a different antenna port, and the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal are different.
  • the base station is co-station with the second base station, and the target beam obtaining module is specifically configured to:
  • the base station is co-located with the second base station
  • the sending module is further configured to: send information currently measured by the base station to the second base station, where the information currently measured by the base station includes at least a DOA between the terminal and the base station;
  • the receiving module is further configured to: receive information about a target beam formed by the second base station that is sent by the second base station;
  • the target beam obtaining module is specifically configured to: determine a target beam corresponding to the information of the target beam.
  • the sending module is further configured to:
  • the sending module is further configured to:
  • the sending module is further configured to:
  • a base station is applied to a communication system including a first base station and the base station, where the base station includes:
  • a target beam obtaining module configured to obtain a target beam of a beam of the base station capable of serving a terminal that has accessed the first base station;
  • a receiving module configured to receive part or all of downlink data of the terminal sent by the first base station
  • a sending module configured to send the downlink data to the terminal by using the target beam.
  • the sending module is further configured to:
  • the beam The mode information includes: first indication information indicating that a beam mode adopted by the base station is a first beam mode, and antenna port information corresponding to each beam of the base station;
  • the information of the beam mode includes: second indication information used to indicate that the beam mode adopted by the base station is the second beam mode, and Information about a time interval corresponding to each beam of the base station.
  • the sending module is further configured to:
  • the base station further includes: a second reference signal configuration module, After the receiving module receives the configuration request sent by the first base station, The terminal is configured to configure a reference signal for measurement on each beam of the second base station; the sending module is further configured to: send configuration information of the reference signal to the first base station;
  • the receiving module is further configured to: receive, by the first base station, the configuration information of the reference signal used for measurement configured by the first base station on each beam of the second base station by the terminal.
  • the receiving module is further configured to:
  • the receiving module is further configured to: receive the first Measurement information sent by the base station, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station;
  • the target beam obtaining module is specifically configured to: determine the target beam according to the measurement information and/or load information on each beam of the second base station.
  • the receiving module is further configured to: receive information currently measured by the first base station, where the information currently measured by the first base station includes at least Determining a DOA between the terminal and the first base station;
  • the target beam obtaining module is specifically configured to: determine, according to the received information, an antenna weight of the base station to form a target beam capable of serving the terminal.
  • the sending module is further configured to:
  • the measurement Information includes:
  • the measured value obtained by the terminal for measuring the reference signal is greater than or equal to the set measurement gate a limited measurement value and identification information of the corresponding antenna port; or all measurement values obtained by the terminal to the reference signal and identification information of the corresponding antenna port; or the terminal measures the reference signal
  • the maximum measured value of the measured value and the identifier information of the corresponding antenna port; or the identification information of the first N largest measured values and corresponding antenna ports of the measured values measured by the terminal on the reference signal, N is Positive integer
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal in different time intervals a measured value obtained by measuring a reference signal on an antenna port of the base station; or a correlation between a maximum measured value of the measured value measured by the terminal on a reference signal on an antenna port of the base station and a corresponding time interval thereof Information; or information about the first N largest measured values and corresponding time intervals of the measured values measured by the terminal on the reference signal on the antenna port of the base station, where N is a positive integer.
  • a base station is applied to a communication system including the base station and a second base station, the base station comprising: a processor, a first transceiver, a second transceiver, a communication interface, and a system bus.
  • the processor and the communication interface are connected through the system bus and complete communication with each other; the communication interface is used for interaction with other communication devices; the first transceiver is configured to perform data with the second base station Transmitting; the second transceiver is configured to perform data transmission with the terminal;
  • the processor is configured to obtain, in a beam of the second base station, a target beam that can serve a terminal that has accessed the base station;
  • the first transceiver is configured to send part or all of the downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal by using the target beam .
  • the first transceiver is further configured to:
  • the beam mode information includes: indicating that the beam mode adopted by the second base station is the first beam First indication information of the mode, and antenna port information corresponding to each beam of the second base station;
  • the beam mode information includes: a second mode for indicating that the beam mode adopted by the second base station is the second beam mode.
  • the indication information and information of a time interval corresponding to each beam of the second base station.
  • the processor is further configured to:
  • the second transceiver is further configured to: Sending configuration information to the terminal;
  • the first transceiver is further configured to: send a configuration request to the second base station, to request the second base station to configure, by the second terminal, a reference signal for measurement on each beam of the second base station; Receiving, by the second base station, configuration information of a reference signal for measurement configured by the terminal on all beams of the second base station; the second transceiver is further configured to: send the configuration information to the Said terminal.
  • the processor is specifically configured to:
  • Determining the target beam based on the measurement information reported by the terminal and the received load information on each beam of the second base station sent by the second base station, where the measurement information is the terminal Measuring the reference signal on each beam of the second base station.
  • the first transceiver is further configured to: receive, by the second transceiver, the measurement information reported by the terminal And transmitting, to the second base station, the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station; and receiving information of a target beam sent by the second base station, Obtaining the target beam.
  • the second base station is fixed by using the first beam mode
  • Each beam corresponds to a different antenna port
  • the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal are different.
  • the base station and the second base station are co-station, as a third optional target beam obtaining manner, where the processor is specifically configured to:
  • the base station is co-located with the second base station
  • the first transceiver is further configured to: send information currently measured by the base station to the second base station, where the information currently measured by the base station at least includes the terminal and the base station Receiving, by the second base station, information about a target beam formed by the second base station;
  • the processor is specifically configured to: determine a target beam corresponding to the information of the target beam.
  • the first transceiver is also used to:
  • the second transceiver is further configured to:
  • the second transceiver is configured to send information about the received beam mode adopted by the second base station to The terminal.
  • a base station is applied to a communication system including a first base station and the base station, the base station comprising: a processor, a first transceiver, a second transceiver, a communication interface, and a system bus; wherein:
  • the processor and the communication interface are connected by the system bus and complete communication with each other; the communication interface is used for interaction with other communication devices; and the first transceiver is configured to perform data transmission with the second base station; The second transceiver is configured to perform data transmission with the terminal;
  • the processor is configured to obtain a target beam of a terminal of the base station capable of serving a terminal that has accessed the first base station;
  • the first transceiver is configured to receive part or all of downlink data of the terminal sent by the first base station;
  • the second transceiver is configured to send the downlink data to the terminal by using the target beam.
  • the first transceiver is further configured to:
  • the beam The mode information includes: first indication information indicating that a beam mode adopted by the base station is a first beam mode, and antenna port information corresponding to each beam of the base station;
  • the information of the beam mode includes: second indication information used to indicate that the beam mode adopted by the base station is the second beam mode, and Information about a time interval corresponding to each beam of the base station.
  • the first transceiver is further configured to:
  • the processor is further configured to: After receiving the configuration request sent by the first base station, the transceiver configures, for the terminal, a reference signal for measurement on each beam of the second base station; the first transceiver is further configured to: Transmitting configuration information of the reference signal to the first base station;
  • the first transceiver is further configured to: receive, by the first base station, the configuration information of the reference signal for measurement configured by the first base station on each beam of the second base station by the terminal.
  • the first transceiver is further configured to:
  • the first transceiver is further configured to: receive the Measurement information sent by the first base station, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station;
  • the processor is specifically configured to: determine the target beam according to the measurement information and/or load information on each beam of the second base station.
  • the first transceiver is further configured to: receive information currently measured by the first base station, where the information currently measured by the first base station is at least Including a DOA between the terminal and the first base station;
  • the processor is specifically configured to: determine, according to the received information, an antenna weight of the base station to form a target beam capable of serving the terminal.
  • the first transceiver is further configured to:
  • the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal in different time intervals a measured value obtained by measuring a reference signal on an antenna port of the base station; or a correlation between a maximum measured value of the measured value measured by the terminal on a reference signal on an antenna port of the base station and a corresponding time interval thereof Information; or information about the first N largest measured values and corresponding time intervals of the measured values measured by the terminal on the reference signal on the antenna port of the base station, where N is a positive integer.
  • a seventh aspect is a communication system, the communication system comprising:
  • the first base station is configured to obtain a target beam that can serve the terminal that has accessed the first base station in the beam of the second base station, and send part or all of the downlink data of the terminal to the second base station, So that the second base station sends the downlink data to the terminal by using the target beam;
  • a second base station configured to obtain a target beam of a terminal of the second base station that can serve the terminal that has accessed the first base station, and receive some or all downlink data of the terminal that is sent by the first base station, and And transmitting the downlink data to the terminal by using the target beam.
  • the first base station obtains a target beam of the second base station that can serve the terminal that has accessed the first base station, and sends part or all of the downlink data of the terminal to a second base station to enable the second base station to receive downlink data through the target beam Sending to the terminal, so that the terminal can establish a downlink data link with the second base station, with the assistance of the first base station, thereby improving resource utilization of the second base station, reducing the load of the first base station, and improving the terminal.
  • the throughput rate is a target beam of the second base station that can serve the terminal that has accessed the first base station, and sends part or all of the downlink data of the terminal to a second base station to enable the second base station to receive downlink data through the target beam Sending to the terminal, so that the terminal can establish a downlink data link with the second base station, with the assistance of the first base station, thereby improving resource utilization of the second base station, reducing the load of the first base station, and improving the terminal.
  • the throughput rate
  • a data transmission method is applied to a communication system including a first base station and a second base station, the method comprising:
  • the first base station receives the measurement information reported by the terminal, where the measurement information is obtained by the terminal measuring the reference signal on different beams of the second base station;
  • the network node is a central node or the second base station, the central node is connected to a core network, and the first base station and the second base station communicate through the central node.
  • the method further includes: the first base station transmitting part or all of the bearer information of the terminal to the second base station, where the bearer information is used to indicate the second base station Establish the corresponding bearer.
  • the method further includes:
  • the first base station sends information of the target beam to the terminal.
  • a ninth aspect a data transmission method is applied to a communication system including a first base station and a second base station, the method comprising:
  • the second base station performs data transmission with the terminal by using the target beam.
  • the method further includes: the second base station receiving part or all of the bearer information of the terminal sent by the network node, where the network node is the first base station or a central node, The central node is connected to a core network, and the first base station and the second base Communicating by the central node; establishing a corresponding bearer according to the bearer information; and acquiring data corresponding to the bearer from the core network;
  • the second base station performs data transmission with the terminal by using the target beam, and the second base station sends data corresponding to the bearer to the terminal by using the target beam.
  • the second base station obtains a target beam that is capable of serving a terminal that has accessed the first base station in a beam of the second base station, and includes:
  • the second base station receives the information of the target beam and the identification information of the terminal sent by the central node to obtain the target beam, where the central node is connected to the core network, and the first base station and the The second base station communicates through the central node.
  • the method further includes: receiving, by the second base station The measurement information sent by the network node, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station, where the network node is the first base station or a central node
  • the central node is connected to the core network, and the first base station and the second base station communicate through the central node;
  • a data transmission method is applied to a communication system including a first base station, a second base station, and a central node, wherein the central node is connected to a core network, and the first base station and the second base station are Communicating through the central node, the method includes:
  • the target node of the second base station capable of serving a target beam of a terminal that has accessed the first base station
  • the central node transmits information of the target beam to the second base station.
  • the method further includes: the central node transmitting information of the target beam to the first base station.
  • a base station for use in a communication system comprising the base station and a second base station, the base station comprising means for performing the method of the eighth aspect.
  • a base station for use in a communication system comprising a first base station and the base station, the base station comprising means for performing the method of the ninth aspect.
  • a central node for a communication system including a first base station, a second base station, and a central node, wherein the central node is connected to a core network, and the first base station and the second base station are Communicating through the central node, the central node comprising means for performing the method of the tenth aspect.
  • a base station for use in a communication system including the base station and a second base station, the base station including a processor, a first transceiver, a second transceiver, a communication interface, and a system bus.
  • the processor, the first transceiver, and the second transceiver perform the method of the eighth aspect.
  • a base station for use in a communication system including the base station and a second base station, the base station including a processor, a first transceiver, a second transceiver, a communication interface, and a system bus.
  • the processor, the first transceiver, and the second transceiver perform the method of the ninth aspect.
  • a central node for a communication system including a first base station, a second base station, and a central node, the central node is connected to a core network, and the first base station and the second base station are Communicating through the central node, the central node including a processor, a transceiver, a communication interface, and a system bus. Wherein the processor and the transceiver perform the method of the tenth aspect.
  • the first base station after receiving the measurement information reported by the terminal, the first base station sends the measurement information to the network node (ie, the second base station or the central node), so that the network node determines, according to the measurement information, A beam of the second base station capable of serving a terminal that has accessed the first base station
  • the target beam enables the second base station and the terminal to perform data transmission through the target beam. Since the first base station can transfer part or all of the services of the terminal on the first base station to the second base station for transmission, the resource utilization of the second base station is improved, and the load of the first base station is also reduced, and the throughput of the terminal is improved.
  • 1 is a schematic diagram of a network architecture of a high frequency station and a low frequency macro station
  • FIG. 2 is a schematic diagram of a data transmission method on a first base station side according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a second base station adopting a first beam mode according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a second base station adopting a second beam mode according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a first base station and a second base station co-station according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a data transmission method on a second base station side according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a first type of base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a second base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a third base station according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a fourth base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a data transmission method on a first base station side according to an embodiment of the present disclosure
  • FIG. 13A is a schematic diagram of a first network architecture according to an embodiment of the present invention.
  • FIG. 13B is a schematic diagram of a second network architecture according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic diagram of a data transmission method on a second base station side according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic diagram of a data transmission method on a central node side according to an embodiment of the present invention.
  • FIG. 16 is a schematic diagram of a first type of central node according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a second central node according to an embodiment of the present invention.
  • next-generation communication systems such as Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, broadband Wideband Code Division Multiple Access Wireless (WCDMA), Frequency Division Multiple Addressing (FDMA) system, Orthogonal Frequency-Division Multiple Access (OFDMA) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, and other such communication systems.
  • GSM Global System for Mobile communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • FDMA Frequency Division Multiple Addressing
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the embodiment of the present invention may be applicable to a network configuration in which the first base station is a macro base station, and the second base station is a small station.
  • the first base station is a macro base station
  • the second base station is a macro base station.
  • the first base station is a small station
  • the second base station is a small station networking structure.
  • the embodiments of the present invention do not limit the applicable networking structure.
  • the macro base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional) Node B) is not limited in the embodiment of the present invention.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station
  • LTE NodeB or eNB or e-NodeB, evolutional
  • the small station includes, but is not limited to, the following: a micro base station (Micro), a pico base station (Pico), and a home base station (Femto, also referred to as a femto base station), which are not limited in the embodiment of the present invention.
  • a micro base station Micro
  • a pico base station Pico
  • a home base station Femto, also referred to as a femto base station
  • the terminal in the embodiment of the present invention may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connection function, or other device connected to the wireless modem. Processing equipment.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN (Radio Access Network)); the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and has a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistants
  • PDA Personal Digital Assistants
  • the communication system is equivalent to the concept of the communication network.
  • the communication network including the first base station and the second base station is equivalent to the communication system including the first base station and the second base station, and is unified in the embodiment of the present invention. Introduced in the concept of a communication system.
  • An embodiment of the present invention provides a data transmission method on a first base station side, which is applied to a communication system including a first base station and a second base station. As shown in FIG. 2, the method includes:
  • the first base station obtains, in a beam of the second base station, a target beam that can serve a terminal that has accessed the first base station;
  • the first base station sends part or all of the downlink data of the terminal to the second base station, so that the second base station sends the received downlink data to the terminal by using the target beam.
  • the downlink data of the terminal refers to data that the first base station needs to send to the terminal.
  • the first base station obtains a target beam of the second base station that can serve the terminal that has accessed the first base station, and sends part or all of the downlink data of the terminal to the second base station, so that The second base station sends the received downlink data to the terminal through the target beam, so that the terminal can establish a downlink data link with the second base station, with the assistance of the first base station, thereby improving resource utilization of the second base station and reducing the resource utilization.
  • the load of the first base station improves the throughput of the terminal.
  • the number of the target beams obtained by the first base station may be one, or may be two or more.
  • the embodiment of the present invention does not limit the number of target beams.
  • the first base station in the S21 obtains the target beam, and includes the following optional implementation manners:
  • the first base station determines the target beam based on the measurement information reported by the terminal, where the measurement information is that the terminal measures the reference signal on each beam of the second base station. of.
  • the method provided by the embodiment of the present invention further includes: the first base station transmitting the information of the target beam and the identifier information of the terminal to the second base station.
  • the first base station determines the target beam based on the measurement information reported by the terminal, including:
  • the first base station selects a beam with the best signal quality from the measurement information reported by the terminal, and determines the selected beam as the target beam.
  • the signal quality may be represented by, but not limited to, at least one of the following information:
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • CQI Channel Quality Indicator
  • RSSI Received Signal Strength Indication
  • the information of the target beam may be identification information of a port corresponding to the target beam; if the second base station uses a second beam If the mode forms different beams in different time intervals, the information of the target beam may be a time interval corresponding to the target beam; if the second base station uses the second beam mode to form different time intervals in different time intervals.
  • the second base station includes at least two ports, and the information of the target beam may be a time interval corresponding to the target beam and identification information of a port corresponding to the target beam.
  • the method further includes: receiving, by the first base station, load information on each beam of the second base station that is sent by the second base station.
  • the first base station determines the target beam according to the measurement information reported by the terminal, where the first base station is configured according to the measurement information reported by the terminal and each beam of the second base station.
  • the load information determines the target beam.
  • the second base station determines the target beam based on the measurement information of the terminal sent by the first base station, and sends information of the target beam to the first base station.
  • the specific behavior of the first base station side is as follows:
  • the method includes: the first base station The measurement information reported by the terminal is sent to the second base station, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station;
  • the target beam Obtaining, by the first base station, the target beam, the first base station receiving information of a target beam sent by the second base station, to obtain the target beam.
  • the method provided by the embodiment of the present invention further includes: the first base station receiving information about a beam mode used by the second base station by the second base station.
  • the method further includes:
  • the beam mode information includes: used to indicate that the second base station adopts The beam mode is first indication information of the first beam mode, and information of an antenna port corresponding to each beam of the second base station.
  • each beam formed by the second base station may correspond to one antenna port, or may correspond to multiple antenna ports, that is, the correspondence between the beam and the antenna port may be one-to-one or one-to-many, where The correspondence between the beam and the antenna port is not limited.
  • the information about the beam mode further includes: a quantity of beams of the second base station.
  • the second base station has M beams, and M is a positive integer.
  • M corresponds to a different antenna port of the second base station, and different reference signals are configured on each beam. It is ensured that the reference signal position corresponding to each antenna port is different, and the reference signal adopts a pseudo-random sequence.
  • the antenna port information is obtained by the position of the reference signal and the pseudo-random sequence, and the reference signal is measured at the antenna port to obtain a signal.
  • Strength or signal quality as shown in Figure 3.
  • the information of the beam mode includes: used to indicate the second base station
  • the adopted beam mode is second indication information of the second beam mode, and information of a time interval corresponding to each beam of the second base station.
  • different beam configurations may be formed by using the set beam polling mode, that is, different in different time intervals. Beams with different reference signals on each beam. For example, for three cells, in each cell service direction, periodic polling is performed using a beam, as shown in FIG. It is assumed that with one LTE frame length as a cycle, in subframes 1 and 2, beam 1 is formed; in subframes 3 and 4, beam 2 is formed; and so on.
  • the related information of the time interval includes: number information corresponding to the time interval.
  • the related information of the time interval includes: information about the subframe included in the time interval.
  • the first indication information and the second indication information may be represented by 1-bit information. If the bit information is “0”, it indicates that the beam mode adopted by the second base station is the first beam mode, that is, the first indication information; The bit information is “1”, indicating that the beam mode adopted by the second base station is the second beam mode, that is, the second indication information.
  • the method provided by the embodiment of the present invention further includes:
  • the first base station is configured to configure, by the terminal, a reference signal for measurement on each beam of the second base station, and send configuration information of the reference signal to the terminal;
  • the reference signal on different beams of the second base station may be configured by the first base station, and notify configuration information to the terminal; or may be configured by the second base station and send configuration information. To the first base station.
  • the method provided by the embodiment of the present invention further includes: the first base station instructing the terminal to perform a reference signal on an antenna port included in the second base station. measuring.
  • the reference signal configured by the first base station is a Channel State Information-Reference Signals (CSI-RS).
  • CSI-RS Channel State Information-Reference Signals
  • the measurement information includes:
  • N is a positive integer.
  • the value of N can be set as needed, for example, the value of N is configured to be 3.
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal are different.
  • the foregoing mode 1 and mode 2 are applicable to various deployment modes of the first base station and the second base station.
  • the first base station and the second base station are co-located; and the first base station and the second base station are not co-located.
  • the first base station obtains the target beam in S21, and further includes the following optional implementation manners:
  • the first base station and the second base station are co-located, as shown in FIG. 5,
  • the first base station and the second base station are deployed on the same site.
  • the obtaining, by the first base station, the target beam includes the following four optional implementation manners:
  • the first base station has saved historical data of a correspondence between different DOAs and beams of the second base station, and the first base station may perform the currently measured DOA of the terminal and the saved DOA. For comparison, a beam of the second base station corresponding to the DOA whose data is closest is selected as the target beam. Specifically:
  • the first base station compares the currently measured DOA between the terminal and the first base station with a saved DOA; the first base station determines, from the saved DOA, the terminal The DOA of the current DOA has the smallest difference, and the determined beam corresponding to the DOA is determined as the target beam.
  • the correspondence between the different DOAs and the beams of the second base station is that the first base station has measured the DOA of any terminal, and finally the terminal successfully passes the The beam 1 of the second base station establishes a data link, and the first base station saves the correspondence between the DOA of the any terminal and the beam 1 of the second base station.
  • the first base station has saved historical data of different path loss information and a correspondence between a DOA formed combination and a beam of the second base station, and the first base station may use the currently measured terminal.
  • the path loss information and the DOA are compared with the saved combination, and from the saved combination, the combination that is closest to the currently measured path loss information and DOA data of the terminal is selected, and the corresponding combination is selected.
  • the beam of the second base station is used as the target beam.
  • the first base station compares the currently measured path loss information and DOA between the terminal and the first base station with a saved combination of each set of path loss information and DOA; the first base station From the saved combination, a combination that is respectively the smallest difference from the current path loss information and the DOA of the terminal is determined, and the determined beam corresponding to the combination is determined as the target beam.
  • the first base station has saved historical data of a correspondence between different DOA ranges and beams of the second base station, and the first base station may use the currently measured DOA of the terminal and the saved data.
  • the DOA range is compared, and the beam of the second base station corresponding to the DOA range in which the currently measured DOA is located is used as the target beam.
  • the first base station compares the currently measured incoming DOA between the terminal and the first base station with a saved different DOA range; the first base station determines the current DOA of the terminal.
  • the DOA range in which the DOA range is determined, and some or all of the beams corresponding to the determined DOA range are determined as the target beam.
  • the partial beams may be randomly selected as the target beam.
  • the target beam may also determine all the beams corresponding to the determined DOA range as the target beam; and may also instruct the terminal to perform measurement on the determined beam corresponding to the DOA range, based on the determined DOA range of the terminal pair.
  • the measurement information of the corresponding beam is selected, for example, a beam having the largest measured value is selected as the target beam from the measurement information, and the like.
  • the first base station has saved historical data of different path loss information and a correspondence between a range formed by the DOA and a beam of the second base station, and the first base station may use the currently measured location.
  • the path loss information of the terminal and the DOA are compared with the range of the saved combination, and the beam of the second base station corresponding to the range of the combination in which the currently measured DOA is located is used as the target beam.
  • the first base station compares the currently measured path loss information and DOA between the terminal and the first base station with a range of combinations of saved different path loss information and DOA; The base station determines the range of the combination of the current path loss information of the terminal and the DOA, and determines the beam corresponding to the determined combined range as the target beam.
  • the method provided by the embodiment of the present invention further includes: sending, by the first base station, information about the target beam to the second base station.
  • Mode 4 The first base station is co-located with the second base station, and the first base station obtains the target beam:
  • the first base station sends the information currently measured by the first base station to the second base station, where the information currently measured by the first base station includes at least the terminal and the first base station.
  • DOA
  • the first base station receives information about a target beam formed by the second base station that is sent by the second base station, and determines a target beam corresponding to the information of the target beam.
  • the first base station sends the currently measured DOA between the terminal and the first base station to the second base station, because the first base station and the second base station are The distance between the second base station and the terminal and the DOA may be considered to be the same as the distance between the first base station and the terminal, and the DOA is the same. Therefore, the second base station may refer to The DOA between the first base station and the terminal dynamically forms a beam capable of serving the terminal.
  • the information currently measured by the first base station further includes path loss information between the terminal and the first base station.
  • the second base station may dynamically form a beam capable of serving the terminal by referring to path loss information and a DOA between the first base station and the terminal.
  • the method provided by the embodiment of the present invention further includes:
  • an embodiment of the present invention further provides a data transmission method on a second base station side, which is applied to a communication system including a first base station and a second base station. As shown in FIG. 6, the method includes:
  • the second base station obtains, in a beam of the second base station, a target beam that can serve a terminal that has accessed the first base station.
  • the second base station receives part or all of the downlink data of the terminal sent by the first base station, and sends the downlink data to the terminal by using the target beam.
  • the method provided by the embodiment of the present invention further includes:
  • the information about the beam mode includes: used to indicate the second base station.
  • the beam mode adopted is the first indication information of the first beam mode and the information of the antenna port corresponding to each beam of the second base station.
  • the information about the beam mode includes: indicating that the beam mode adopted by the second base station is a second beam.
  • the method provided by the embodiment of the present invention further includes:
  • the second base station After receiving the configuration request sent by the first base station, the second base station configures, for the terminal, a reference signal for measurement on each beam of the second base station, and configures the reference signal. Information is sent to the first base station.
  • the method provided by the embodiment of the present invention further includes:
  • the second base station transmits load information on each of its own beams to the first base station.
  • the second base station may actively send the load information on each beam of the first base station to the first base station, or may send each of the first base stations to each of the first base stations after receiving the request of the first base station. Load information on the beam.
  • the second base station may carry the information of the beam mode adopted by the second base station and the load information of each beam of the second base station in a message to the first base station;
  • the second base station may also carry the configuration information and the load information on each beam of the second base station in a message and send the signal to the first base station;
  • the second base station may also adopt separate signaling.
  • the message transmits the load information on each of its own beams to the first base station.
  • the second base station in the S61 obtains the target beam, including:
  • the second base station receives the information of the target beam and the identification information of the terminal sent by the first base station to obtain the target beam.
  • the second base station in S61 obtains the target beam Before, the method further includes:
  • the second base station receives measurement information sent by the first base station, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station;
  • the second base station in the S61 obtains the target beam, and the second base station determines the target according to the measurement information and/or load information on each beam of the second base station. Beam.
  • the method further includes:
  • the second base station sends the information of the target beam and the identification information of the terminal to the first base station.
  • the measurement information includes:
  • N is a positive integer.
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal are different.
  • the method further includes:
  • the second base station receives the information currently measured by the first base station, where the information currently measured by the first base station includes at least a DOA between the terminal and the first base station;
  • the second base station in the S61 obtains the target beam, and the second base station determines, according to the received information, an antenna weight of the second base station to form a target capable of serving the terminal. Beam.
  • the information currently measured by the first base station further includes: path loss information between the terminal and the first base station.
  • the second base station determines an antenna weight of the second base station according to the received path loss information and the DOA to form a target beam capable of serving the terminal.
  • the second base station After the obtaining, by the second base station, the target beam in S61, the second base station sends the information about the target beam and the identifier information of the terminal to the first base station.
  • the second base station is co-located with the first base station, and the second base station may refer to path loss information between the first base station and the terminal measured by the first base station. At least one information in the DOA, and thereby calculating an antenna weight on the second base station. At the same time, the second base station may need to calibrate the obtained antenna weights by considering at least one of a frequency difference, an antenna spacing difference, and an antenna array difference adopted by the first base station. The second base station determines an antenna weight of the second base station according to the at least one information to form a target beam capable of serving the terminal.
  • the embodiment of the present invention may be applicable to a network configuration in which the first base station is a macro base station, and the second base station is a small station.
  • the first base station is a macro base station
  • the second base station is a macro base station.
  • the first base station is a small station
  • the second base station is a small station networking structure.
  • the embodiments of the present invention do not limit the applicable networking structure.
  • the above method processing flow can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
  • the first base station is also provided in the embodiment of the present invention. Since the principle of the base station is similar to the data transmission method shown in FIG. 2, the implementation of the base station can be referred to the foregoing FIG. The implementation of the method, the repetition will not be repeated.
  • the first type of base station provided by the embodiment of the present invention is as shown in FIG. 7.
  • the base station is applied to a communication system including the base station and the second base station, where the base station includes:
  • a target beam obtaining module 71 configured to obtain a target beam of a beam of the second base station that can serve a terminal that has accessed the base station;
  • the sending module 72 is configured to send part or all of the downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal by using the target beam.
  • the base station further includes:
  • the receiving module 73 is configured to receive information about a beam mode adopted by the second base station by the second base station.
  • the second base station is configured to form multiple beams by using the first beam mode, each beam corresponding to a different antenna port, where the information about the beam mode includes: a beam mode used to indicate the second base station is used. First indication information of the first beam mode, and antenna port information corresponding to each beam of the second base station;
  • the beam mode information includes: a second mode for indicating that the beam mode adopted by the second base station is the second beam mode.
  • the indication information and information of a time interval corresponding to each beam of the second base station.
  • the sending module 72 is further configured to:
  • the base station further includes:
  • the reference signal configuration module 74 is configured to configure, for the terminal, a reference signal for measurement on each beam of the second base station, and send configuration information of the reference signal to the terminal.
  • the sending module 72 is further configured to: send a configuration request to the second base station, to request the second base station to be the terminal at the second base station A reference signal for measurement is configured on each beam; the receiving module 73 is further configured to: receive the The second base station is configuration information of the reference signal for measurement configured by the terminal on all the beams of the second base station; the sending module is further configured to: send the configuration information to the terminal.
  • the target beam obtaining module 71 is specifically configured to:
  • Determining the target beam based on the measurement information reported by the terminal and the received load information on each beam of the second base station sent by the second base station, where the measurement information is the terminal Measuring the reference signal on each beam of the second base station.
  • the sending module 72 is further configured to: send the measurement information reported by the terminal to the second base station, where the measurement information is the terminal Measuring the reference signal on each beam of the second base station;
  • the receiving module 73 is further configured to: receive information about a target beam sent by the second base station, to obtain the target beam.
  • the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or different time zones And the measured value measured by the terminal on the reference signal on the antenna port of the second base station in different time intervals; or the terminal measuring the reference signal on the antenna port of the second base station Information about the largest measured value of the measured value and its corresponding time interval; or the first N largest measured values of the measured values measured by the terminal on the reference signal on the antenna port of the second base station and their corresponding Information about the time interval, where N is a positive integer.
  • the base station is co-located with the second base station as a third optional target beam obtaining mode, and the target beam obtaining module 71 is specifically configured to:
  • the base station is co-located with the second base station as a fourth optional target beam obtaining mode
  • the sending module 72 is further configured to: send information currently measured by the base station to the second base station, where the information currently measured by the base station includes at least a DOA between the terminal and the base station. ;
  • the receiving module 73 is further configured to: receive information about a target beam formed by the second base station that is sent by the second base station;
  • the target beam obtaining module 71 is specifically configured to: determine a target beam corresponding to the information of the target beam.
  • the sending module 72 is further configured to:
  • the sending module 72 is further configured to:
  • the second base station is further provided in the embodiment of the present invention. Since the principle of the base station is similar to the data transmission method shown in FIG. 6 above, the implementation of the base station can be referred to the foregoing FIG. The implementation of the method, the repetition will not be repeated.
  • the embodiment of the present invention provides a second base station, which is applied to a communication system including a first base station and the base station.
  • the base station includes:
  • a target beam obtaining module 81 configured to obtain a target beam of a beam of the base station capable of serving a terminal that has accessed the first base station;
  • the receiving module 82 is configured to receive part or all of the downlink data of the terminal sent by the first base station;
  • the sending module 83 is configured to send the downlink data to the terminal by using the target beam.
  • the sending module 83 is further configured to:
  • the information about the beam mode includes: indicating that the beam mode adopted by the base station is the first beam. First indication information of the mode, and antenna port information corresponding to each beam of the base station;
  • the information about the beam mode includes: indicating that the beam mode adopted by the base station is the second beam mode. Second indication information, and information of a time interval corresponding to each beam of the base station.
  • the sending module 83 is further configured to:
  • the base station further includes: a reference signal configuration module 84, configured to: after the receiving module 82 receives the configuration request sent by the first base station, the terminal is in the second base station Each of the beams is configured with a reference signal for measurement; the sending module 83 is further configured to: send configuration information of the reference signal to the first base station;
  • the receiving module 82 is further configured to: receive, by the first base station, configuration information of the reference signal for measurement configured by the first base station on each beam of the second base station by the terminal.
  • the receiving module 82 is further configured to:
  • the receiving module 82 is further configured to: receive measurement information sent by the first base station, where the measurement information is used by each terminal to the second base station The reference signal on the beam is measured;
  • the target beam obtaining module 81 is specifically configured to: determine the target beam according to the measurement information and/or load information on each beam of the second base station.
  • the receiving module 82 is further configured to: receive information currently measured by the first base station, where the information currently measured by the first base station includes at least the terminal a DOA with the first base station;
  • the target beam obtaining module 81 is specifically configured to: determine, according to the received information, an antenna weight of the base station to form a target beam capable of serving the terminal.
  • the information currently measured by the first base station further includes path loss information between the terminal and the first base station.
  • the target beam obtaining module 81 is determined according to the received path loss information and the DOA.
  • An antenna weight of the base station is determined to form a target beam capable of serving the terminal.
  • the sending module 83 is further configured to:
  • the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal in different time intervals a measured value obtained by measuring a reference signal on an antenna port of the base station; or a correlation between a maximum measured value of the measured value measured by the terminal on a reference signal on an antenna port of the base station and a corresponding time interval thereof Information; or information about the first N largest measured values and corresponding time intervals of the measured values measured by the terminal on the reference signal on the antenna port of the base station, where N is a positive integer.
  • the modules included in the base stations shown in FIG. 7 and FIG. 8 may be disposed in a base station.
  • the base station is the first base station
  • the target beam obtaining module 71, the receiving module 73, and the sending module 72 are triggered.
  • the reference signal configuration module 74 performs processing; when the base station is the second base station, the trigger target beam obtaining module 81, the receiving module 82, the transmitting module 83, and the reference signal configuration module 84 perform processing.
  • a third base station is further provided in the embodiment of the present invention, because the base station
  • the principle of the problem is similar to the data transmission method shown in FIG. 2 above. Therefore, the implementation of the base station can be referred to the implementation of the method shown in FIG. 2 above, and the repeated description is not repeated.
  • a third base station according to an embodiment of the present invention, as shown in FIG. 9, the base station is applied to a communication system including the base station and a second base station, where the base station includes:
  • the processor 91 the first transceiver 92, the second transceiver 93, the communication interface 94, and the system bus 95. among them:
  • the processor 91 and the communication interface 94 are connected by the system bus 95 and complete communication with each other.
  • the processor 91 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. .
  • the communication interface 94 is for interacting with other communication devices.
  • the first transceiver 92 is configured to perform data transmission with other base stations (such as a second base station).
  • the second transceiver 93 is configured to perform data transmission with the terminal.
  • first transceiver 92 and the second transceiver 93 can be two independent transceivers, and can also be integrated into one information transceiver device, which is not limited in this embodiment of the present invention.
  • the processor 91, the first transceiver 92, and the second transceiver 93 may perform the method flow described in FIG.
  • the processor 91 is configured to obtain a target beam of a beam of the second base station that can serve a terminal that has accessed the base station;
  • the first transceiver 92 is configured to send part or all of the downlink data of the terminal to the second base station, so that the second base station sends the downlink data to the terminal.
  • the first transceiver 92 is further configured to:
  • the second base station is configured to form multiple beams by using the first beam mode, each beam corresponding to a different antenna port, where the information about the beam mode includes: a beam mode used to indicate the second base station is used. First indication information of the first beam mode, and each of the second base stations Antenna port information corresponding to the beam;
  • the beam mode information includes: a second mode for indicating that the beam mode adopted by the second base station is the second beam mode.
  • the indication information and information of a time interval corresponding to each beam of the second base station.
  • the second transceiver 93 is configured to send, to the terminal, information about the received beam mode adopted by the second base station.
  • the processor 91 is further configured to:
  • the first transceiver 92 is further configured to: send a configuration request to the second base station to request the second base station to be the terminal in the second Configuring a reference signal for measurement on each beam of the base station; receiving, by the second base station, configuration information of a reference signal for measurement configured by the terminal on all beams of the second base station;
  • the transceiver 93 is further configured to: send the configuration information to the terminal.
  • the processor 91 is specifically configured to:
  • Determining the target beam based on the measurement information reported by the terminal and the received load information on each beam of the second base station sent by the second base station, where the measurement information is the terminal Measuring the reference signal on each beam of the second base station.
  • the first transceiver 92 is further configured to: send the measurement information reported by the terminal received by the second transceiver 93 to the second base station,
  • the measurement information is that the terminal enters a reference signal on each beam of the second base station.
  • the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the second base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal are different.
  • the base station is co-located with the second base station as a third optional target beam obtaining manner, and the processor 91 is specifically configured to:
  • the base station is co-located with the second base station as a fourth optional target beam obtaining mode
  • the first transceiver 92 is further configured to: send information currently measured by the base station to the second base station, where the information currently measured by the base station at least includes the terminal and the base station Receiving, by the second base station, information about a target beam formed by the second base station;
  • the processor 91 is specifically configured to: determine a target beam corresponding to the information of the target beam.
  • the information currently measured by the base station further includes path loss information between the terminal and the base station.
  • the first transceiver 92 is further configured to:
  • the second transceiver 93 is further configured to:
  • a fourth type of base station is further provided in the embodiment of the present invention. Since the principle of the base station is similar to the data transmission method shown in FIG. 6 above, the implementation of the base station can be referred to the foregoing FIG. The implementation of the method, the repetition will not be repeated.
  • the embodiment of the present invention provides a fourth base station, which is applied to a path including a first base station and the base station.
  • the letter system, as shown in FIG. 10, the base station includes:
  • the processor 101 the first transceiver 102, the second transceiver 103, the communication interface 104, and the system bus 105. among them:
  • the processor 101 and the communication interface 104 are connected by the system bus 105 and complete communication with each other.
  • the processor 101 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. .
  • the communication interface 104 is for interacting with other communication devices.
  • the first transceiver 102 is configured to perform data transmission with other base stations (such as a second base station).
  • the second transceiver 103 is configured to perform data transmission with the terminal.
  • the processor 101, the first transceiver 102, and the second transceiver 103 may perform the method flow described in FIG.
  • the processor 101 is configured to obtain, in a beam of the base station, a target beam that can serve a terminal that has accessed the first base station;
  • the first transceiver 102 is configured to receive some or all downlink data of the terminal sent by the first base station;
  • the second transceiver 103 is configured to send the downlink data to the terminal by using the target beam.
  • the first transceiver 102 is further configured to:
  • the information about the beam mode includes: indicating that the beam mode adopted by the base station is the first beam. First indication information of the mode, and antenna port information corresponding to each beam of the base station;
  • the information of the beam mode includes: second indication information used to indicate that the beam mode adopted by the base station is the second beam mode, and Information about a time interval corresponding to each beam of the base station.
  • the first transceiver 102 is further configured to:
  • the processor 101 is further configured to: after the first transceiver 102 receives the configuration request sent by the first base station, for each terminal of the second base station Configuring a reference signal for measurement on the beam; the first transceiver 102 is further configured to: send configuration information of the reference signal to the first base station;
  • the first transceiver 102 is further configured to: receive, by the first base station, configuration information of the reference signal used for measurement configured by the first base station on each beam of the second base station by the terminal .
  • the first transceiver 102 is further configured to:
  • the first transceiver 102 is further configured to: receive measurement information sent by the first base station, where the measurement information is the terminal to the second base station The reference signal on each beam is measured;
  • the processor 101 is specifically configured to: determine the target beam according to the measurement information and/or load information on each beam of the second base station.
  • the first transceiver 102 is further configured to: receive information currently measured by the first base station, where the information currently measured by the first base station includes at least Determining a DOA between the terminal and the first base station;
  • the processor 101 is specifically configured to: determine, according to the received information, an antenna weight of the base station to form a target beam that can serve the terminal.
  • the information currently measured by the first base station further includes path loss information between the terminal and the first base station.
  • the processor 101 determines the base according to the received path loss information and the DOA.
  • the antenna weight of the station to form a target beam capable of servicing the terminal.
  • the first transceiver 102 is further configured to:
  • the measurement information includes:
  • the measurement information includes:
  • the information that the measured value measured by the reference signal on the antenna port of the base station is greater than or equal to the time interval of the reference signal of the set measurement threshold; or the information of different time intervals and the terminal in different time intervals a measured value obtained by measuring a reference signal on an antenna port of the base station; or a correlation between a maximum measured value of the measured value measured by the terminal on a reference signal on an antenna port of the base station and a corresponding time interval thereof Information; or information about the first N largest measured values and corresponding time intervals of the measured values measured by the terminal on the reference signal on the antenna port of the base station, where N is a positive integer.
  • modules included in the base stations shown in FIG. 9 and FIG. 10 may be disposed in one base station, and when the base station is the first base station, the triggering processor 91, the first transceiver 92, and the second transceiver 93 performs processing; when the base station is the second base station, the trigger processor 101, the first transceiver 102, and the second transceiver 103 perform processing.
  • modules included in the base stations shown in FIG. 9 and FIG. 10 may be disposed in one base station, and when the base station is the first base station, the triggering processor 91, the first transceiver 92, and the second The transceiver 93 performs processing; when the base station is the second base station, the trigger processor 101, the first transceiver 102, and the second transceiver 103 perform processing.
  • an embodiment of the present invention further provides a communication system, as shown in FIG.
  • the first base station 111 is configured to obtain a target beam of the second base station that can serve the terminal that has accessed the first base station, and send part or all of the downlink data of the terminal to the second base station. So that the second base station sends the downlink data to the terminal by using the target beam;
  • the second base station 112 is configured to obtain a target beam of the second base station that can serve the terminal that has accessed the first base station, and receive part or all of the downlink data of the terminal that is sent by the first base station, And transmitting the downlink data to the terminal by using the target beam.
  • the first base station 111 may be a base station as shown in FIG. 7, or may be a base station as shown in FIG. 9.
  • the first base station 112 may be a base station as shown in FIG. 8, or may be as shown in FIG. The base station shown in 10.
  • the base station shown in 10. For a detailed description of the first base station 111 and the first base station 112, reference may be made to related content of other embodiments of the present invention, and details are not described herein.
  • a data transmission method on the first base station side is provided, which is applied to a communication system including a first base station and a second base station. As shown in FIG. 12, the method includes:
  • the first base station receives measurement information reported by the terminal, where the measurement information is obtained by the terminal measuring a reference signal on different beams of the second base station;
  • the information of the target beam may be the identification information of the port corresponding to the target beam; if the second base station uses the second beam If the mode forms different beams in different time intervals, the information of the target beam may be a time interval corresponding to the target beam; if the second base station uses the second beam mode to form different time intervals in different time intervals.
  • the second base station includes at least two ports, and the information of the target beam may be a time interval corresponding to the target beam and identification information of a port corresponding to the target beam.
  • the first base station sends the measurement information to a network node, so that the network node Determining, according to the measurement information, a target beam of a terminal of the second base station capable of serving a terminal that has accessed the first base station, where the network node is a central node or the second base station, and the central node and the core
  • the network is connected, and the first base station and the second base station communicate through the central node.
  • the first base station after receiving the measurement information reported by the terminal, the first base station sends the measurement information to the network node, so that the network node determines that the second base station can serve in the beam according to the measurement information.
  • the target beam of the terminal of the first base station is accessed, so that the second base station and the terminal can perform data transmission through the target beam. Since the first base station can transfer part or all of the services of the terminal on the first base station to the second base station for transmission, the resource utilization of the second base station is improved, and the load of the first base station is also reduced, and the throughput of the terminal is improved. .
  • the number of the target beams obtained by the first base station may be one, or may be two or more.
  • the embodiment of the present invention does not limit the number of target beams.
  • the network architecture applied in the embodiment of the present invention is different.
  • the implementation manner of obtaining the target beam by the first base station in S21 specifically includes the following two possible implementation manners:
  • the network architecture applied in the mode is as shown in FIG. 13A.
  • the first base station and the second base station are respectively connected to the core network, and an interface exists between the first base station and the second base station, and the terminal can be directly connected.
  • Base station is
  • the target beam is determined by the second base station.
  • the specific behavior of the first base station is as follows: the first base station sends the measurement information reported by the terminal to the second base station.
  • the second base station sends the information of the target beam to the first base station.
  • the first base station receives information about a target beam sent by the second base station
  • the first base station sends information of the target beam to the terminal, so that the terminal can perform monitoring only on the target beam to receive downlink data sent by the second base station.
  • the second base station determines the target beam based on the measurement information sent by the first base station.
  • the second base station determines, from the measurement information sent by the first base station, a beam with the best signal quality as the target beam; or the second base station Among the measurement information transmitted by the first base station, a beam whose selection signal quality satisfies a set threshold is determined as the target beam.
  • the signal quality may be represented by, but not limited to, at least one of the following information:
  • the second base station determines the target beam according to the measurement information sent by the first base station and the load information on each beam of the second base station.
  • the second base station selects a beam whose signal quality satisfies the set threshold and the minimum load is determined as the target beam. For another example, the second base station selects a beam whose signal quality meets the set threshold and the load meets the set threshold is determined as the target beam, and the like.
  • the network architecture applied in the mode is as shown in FIG. 13B, that is, a central unit (CU), a distributed unit (DU) architecture, and the first DU in FIG. 13B is the first base station.
  • the second DU is the second base station.
  • the first DU and the second DU are respectively connected to the CU, and the CU is connected to the core network.
  • the first DU and the second DU transmit data through the CU, and the terminal has accessed the first DU. .
  • the target beam is determined by the central node, and the information of the target beam is transmitted to the second base station.
  • the first base station sends the measurement information reported by the terminal to the central node, so that the central node determines the target beam according to the measurement information.
  • the method further includes:
  • the central node transmits information of the target beam to the first base station.
  • the first base station receives information about a target beam sent by the central node
  • the first base station sends information of the target beam to the terminal.
  • the central node determines the target beam based on the measurement information sent by the first base station.
  • the specific processing refer to the implementation manner of determining the target beam by the second base station in the first mode.
  • the method further includes: the first base station is connected to And receiving, by the second base station, information about a beam mode adopted by the second base station.
  • the method further includes:
  • the first base station is configured to configure, by the terminal, a reference signal for measurement on each beam of the second base station, and send configuration information of the reference signal to the terminal;
  • the method provided by the embodiment of the present invention further includes: the first base station instructing the terminal to perform measurement on a reference signal on an antenna port included in the second base station.
  • the first base station instructing the terminal to perform measurement on a reference signal on an antenna port included in the second base station.
  • the foregoing mode 1 and mode 2 are applicable to various deployment modes of the first base station and the second base station.
  • the first base station and the second base station are co-located; and the first base station and the second base station are not co-located.
  • the method provided by the embodiment of the present invention further includes:
  • the first base station sends part or all of the bearer information of the terminal to the second base station, where the bearer information is used to indicate that the second base station establishes a corresponding bearer.
  • the first base station directly sends part or all of the bearer information for transmitting the terminal to the second base station; if applied to FIG. 13B
  • the first base station sends part or all of the bearer information of the terminal to the second base station by using a central node (CU), that is, the first base station will part or all of the terminal
  • CU central node
  • the bearer information is sent to the central node, and then the central node forwards part or all of the bearer information of the terminal to the second base station.
  • the bearer information includes but is not limited to the following information:
  • the tunnel endpoint identifier is an endpoint identifier of a tunnel to the core network; if applied to the network architecture shown in FIG. 13B, the tunnel endpoint identifier is a tunnel to the central node. Endpoint identifier.
  • a data transmission method on the second base station side is provided, which is applied to a communication system including a first base station and a second base station, which is the same as the embodiment shown in FIG. 12 in this embodiment. Please refer to the related description in the embodiment shown in FIG. 12, and details are not described herein again.
  • the method includes:
  • the second base station obtains, in a beam of the second base station, a target beam that can serve a terminal that has accessed the first base station.
  • the second base station performs data transmission with the terminal by using the target beam.
  • the second base station obtains a target beam of the second base station that can serve the terminal that has accessed the first base station, and performs data transmission with the terminal by using the target beam, so that the first base station With the assistance, some or all of the services of the terminal on the first base station are transferred to the second base station for transmission, which improves the resource utilization of the second base station, reduces the load of the first base station, and improves the throughput rate of the terminal.
  • the method provided by the embodiment of the present invention further includes: sending, by the second base station, information about a beam mode adopted by the second base station to the first base station.
  • the method provided by the embodiment of the present invention further includes:
  • the second base station After receiving the configuration request sent by the first base station, the second base station configures, for the terminal, a reference signal for measurement on each beam of the second base station, and configures the reference signal. Information is sent to the first base station.
  • the second base station in the S141 obtains the target beam, including:
  • the second base station receives information of the target beam sent by the central node to obtain the target beam.
  • the method before the second base station in the S141 obtains the target beam, the method further includes:
  • the second base station receives measurement information sent by the first base station, where the measurement information is obtained by the terminal measuring a reference signal on each beam of the second base station;
  • the second base station in the S141 obtains the target beam, including: the second base station determines the target according to the measurement information and/or load information on each beam of the second base station. Beam.
  • the second base station determines the target according to the measurement information and/or load information on each beam of the second base station. Beam.
  • the method further includes:
  • the second base station sends the information of the target beam and the identifier information of the terminal to the first base station, so that the first base station notifies the terminal of the information of the target beam.
  • the method further includes: the second base station receiving part or all of the bearer information of the terminal sent by the network node; establishing a corresponding bearer according to the bearer information; and acquiring the The corresponding data is carried.
  • the second base station establishes, according to the bearer information, a tunnel corresponding to the bearer corresponding to the core network;
  • the second base station acquires data corresponding to the bearer from the core network.
  • the second base station performs data transmission with the terminal by using the target beam, and the second base station sends data corresponding to the bearer to the terminal by using the target beam.
  • the second base station establishes, according to the bearer information, a tunnel corresponding to the bearer with the central node;
  • the second base station acquires data corresponding to the bearer from the core network by using the central node.
  • the second base station performs data transmission with the terminal by using the target beam, and the second base station sends data corresponding to the bearer to the terminal by using the target beam.
  • a data transmission method on a central node side is provided, which is applied to a communication system including a first base station, a second base station, and a central node, wherein the central node is connected to a core network, The first base station and the second base station communicate through the central node, and the method includes:
  • the central node receives the measurement information sent by the first base station, and the measurement information is specifically related to the description in the embodiment shown in FIG. 12, and details are not described herein again.
  • the central node determines, according to the measurement information, a target beam that is capable of serving a terminal that has accessed the first base station in a beam of the second base station;
  • the manner in which the central node determines the target beam is similar to the manner in which the second base station determines the target beam in the embodiment shown in FIG. 12. For details, refer to the related description in the embodiment shown in FIG. Let me repeat.
  • the central node sends information about the target beam to the second base station.
  • the method further includes: the central node transmitting information about the target beam to the first base station.
  • the above method processing flow can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
  • FIG. 7 a possible implementation of the device corresponding to the embodiment shown in FIG. 12 is shown in FIG. 7 , wherein the receiving module 73 and the sending module 72 are further configured to execute the embodiment shown in FIG. 12 .
  • the receiving module 73 and the sending module 72 are further configured to execute the embodiment shown in FIG. 12 .
  • FIG. 9 Another possible implementation of the apparatus corresponding to the embodiment shown in FIG. 12 is as shown in FIG. 9, wherein the processor 91, the first transceiver 92, and the second transceiver 93 are also used to execute
  • the processor 91, the first transceiver 92, and the second transceiver 93 are also used to execute
  • the processor 91, the first transceiver 92, and the second transceiver 93 are also used to execute
  • FIG. 8 a possible implementation of the device corresponding to the embodiment shown in FIG. 14 is as shown in FIG. 8 , wherein the target beam obtaining module 81 further performs the method in the embodiment shown in FIG. 14 .
  • the related description in the embodiment shown in FIG. 14 is not described herein again.
  • the device shown in FIG. 8 further includes:
  • a data transmission module configured to perform data transmission with the terminal by using the target beam.
  • the device shown in FIG. 8 further includes:
  • a bearer establishing module configured to receive part or all of the bearer information of the terminal sent by the network node, where the network node is the first base station or a central node, and the central node is respectively connected to the core network, the first The base station is connected to the base station; the corresponding bearer is established according to the bearer information; and the data corresponding to the bearer is obtained from the core network.
  • the data transmission module is specifically configured to: send data corresponding to the bearer to the terminal by using the target beam.
  • FIG. 10 Another possible implementation of the apparatus corresponding to the embodiment shown in FIG. 14 is as shown in FIG. 10, wherein the processor, the first transceiver 102, and the second transceiver 103 also perform the operation of FIG.
  • the processor, the first transceiver 102, and the second transceiver 103 also perform the operation of FIG.
  • the processor, the first transceiver 102, and the second transceiver 103 also perform the operation of FIG.
  • a central node In a communication system including a first base station, a second base station, and the central node, the central node is connected to a core network, and the first base station and the second base station communicate through the central node,
  • the central node includes:
  • the receiving module 161 is configured to receive the measurement information sent by the first base station, where the measurement information is related to the description in the embodiment shown in FIG. 12, and details are not described herein again;
  • a determining module 162 configured to determine, according to the measurement information, a target beam that can serve a terminal that has accessed the first base station in a beam of the second base station; and how the determining module 162 determines the target beam
  • the method for determining the target beam by the second base station in the embodiment shown in FIG. 12 is similar. For details, refer to the related description in the embodiment shown in FIG. 12, and details are not described herein again.
  • the sending module 163 is configured to send information about the target beam to the second base station.
  • the sending module 163 is further configured to: send information about the target beam to the first base station.
  • another central node including a processor 171, a transceiver 172, a communication interface 173, and a system bus 174.
  • the processor 171 and the communication interface 173 are connected through the system bus 174 and complete communication with each other.
  • the processor 171 can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.
  • the communication interface 173 is used to interact with other communication devices.
  • the transceiver 172 is configured to perform data transmission with other network nodes (such as a first base station, a second base station).
  • the processor 171 and the transceiver 172 can perform the method flow described in FIG.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

La présente invention concerne un procédé, un dispositif et un système de transmission de données pour traiter le problème dans lequel une micro-station de base haute fréquence existante ne peut pas sélectionner, sur la base d'une rétroaction de liaison montante d'un équipement utilisateur (UE), un faisceau approprié pour que l'UE transmette des données. La présente invention concerne un procédé de transmission de données appliqué à un système de communication comprenant une première station de base et une seconde station de base, le procédé comprenant les opérations suivantes : la première station de base acquiert un faisceau cible de faisceaux de la seconde station de base capable de desservir un terminal qui a accédé à la première station de base ; et la première station de base transmet tout ou partie des données de liaison descendante du terminal à la seconde station de base, de telle sorte que la seconde station de base transmet les données de liaison descendante reçues par l'intermédiaire du faisceau cible au terminal. De cette manière, le terminal peut, avec l'aide de la première station de base, établir une liaison de données de liaison descendante avec la seconde station de base, ce qui permet d'accroître le taux d'utilisation de ressource de la seconde station de base tout en réduisant le chargement de la première station de base et tout en augmentant le débit du terminal.
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