WO2017028676A1 - 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
WO2017028676A1
WO2017028676A1 PCT/CN2016/092717 CN2016092717W WO2017028676A1 WO 2017028676 A1 WO2017028676 A1 WO 2017028676A1 CN 2016092717 W CN2016092717 W CN 2016092717W WO 2017028676 A1 WO2017028676 A1 WO 2017028676A1
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WO
WIPO (PCT)
Prior art keywords
terminal
base station
transmit
data
transceiver
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Application number
PCT/CN2016/092717
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English (en)
Chinese (zh)
Inventor
刘文豪
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中兴通讯股份有限公司
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Publication of WO2017028676A1 publication Critical patent/WO2017028676A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming

Definitions

  • the present application relates to, but is not limited to, a Long Term Evolution Advanced System (LTE-Advanced), and more particularly to a data transmission method, apparatus, and system.
  • LTE-Advanced Long Term Evolution Advanced System
  • the transmitting end can concentrate the transmitting energy in a certain direction, and the energy is small or absent in other directions, that is, each beam has its own directivity, and each beam can only cover To a terminal in a certain direction, the transmitting end (ie, the base station) needs to transmit multiple beams to complete the full coverage.
  • the preferred beam between the terminal and the high frequency station may be blocked, causing the link to fail, affecting the user experience, and the above phenomenon is more pronounced in the high frequency band than the coverage of the low frequency band. For example, if the terminal moves to an obstacle, the link will be invalidated. At this time, it takes more time to perform beam selection again.
  • the embodiments of the present invention provide a data transmission method, device, and system, which are used to solve the problem that the related 3GPP or 802.11 technologies do not implement data transmission through dual beams or multiple beams.
  • An embodiment of the present invention provides a data transmission method, including: a base station notifying a transmit beam capability of a terminal base station, and acquiring a receive beam capability of the terminal; the base station determining, according to channel state information of different transmit and receive beam pairs reported by the terminal, for transmitting data. Independently transmitting and receiving beam pairs; when the determined number of independent transceiving beam pairs is at least two, the base station transmits data for each terminal on each determined independent transceiving beam pair, and transmits the determined data form of the independent transceiving beam pair Notify the terminal.
  • the embodiment of the present invention further provides a data transmission method, including: the terminal learns the transmit beam capability of the base station, and sends its own receive beam capability to the base station; the terminal reports the channel state information of the different transmit and receive beam pairs to the base station; A data transmission form of at least two independent transceiving beam pairs for transmitting data, receiving data transmitted on the at least two independent transceiving beam pairs, and combining the received data.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a base station, and includes: a first beam capability interaction module, configured to notify a terminal base station of a transmit beam capability, and acquire a receive beam capability of the terminal; the first processing module is configured to Determining, according to channel state information of different transceiver beam pairs reported by the terminal, an independent transceiver beam pair for transmitting data; the first transmission module is configured to: when the number of independent transceiver beam pairs determined by the first processing module is at least two At this time, data is transmitted to the terminal on each of the determined independent transceiver beam pairs, and the determined data transmission form of the independent transceiver beam pair is notified to the terminal.
  • a data transmission apparatus which is applied to a base station, and includes: a first beam capability interaction module, configured to notify a terminal base station of a transmit beam capability, and acquire a receive beam capability of the terminal; the first processing module is configured to Determining, according to channel state information of different transceiver beam pairs reported
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a terminal, and includes: a second beam capability interaction module, configured to learn the transmit beam capability of the base station, and send its own receive beam capability to the base station; and the second transmission module sets The channel processing information of the different transceiver beam pairs is reported to the base station; the second processing module is configured to receive the at least two independent transceivers according to the data transmission form of the at least two independent transceiver beam pairs for transmitting data notified by the base station. Number transmitted on the beam pair According to, and merge the received data.
  • a data transmission apparatus which is applied to a terminal, and includes: a second beam capability interaction module, configured to learn the transmit beam capability of the base station, and send its own receive beam capability to the base station; and the second transmission module sets The channel processing information of the different transceiver beam pairs is reported to the base station; the second processing module is configured to receive the at least two independent transceivers according to the data transmission form of the at least two independent transceiver beam
  • the embodiment of the invention further provides a data transmission system, comprising the above data transmission device applied to a base station and the above data transmission device applied to the terminal.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented to implement the above data transmission method applied to a base station.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed.
  • the base station informs the terminal base station of the transmit beam capability, and acquires the receive beam capability of the terminal; the base station determines the independent transmit/transmit beam pair for transmitting data according to the channel state information of the different transmit and receive beam pairs reported by the terminal; When the number of the determined independent transceiver beam pairs is at least two, the base station transmits data to the terminal on each determined independent transceiver beam pair, and notifies the terminal of the determined data transmission form of the independent transceiver beam pair.
  • data transmission is performed through at least two independent transceiver beam pairs, thereby improving the reliability of the millimeter wave link.
  • the delay of the downlink synchronization and the identification process of the independent transceiver beam pair is reduced, thereby improving the access speed of the terminal to the high frequency station; reducing the complexity of the terminal for identifying the optimal independent transceiver beam pair, and improving the complexity
  • the accuracy of the beam identification avoids the situation that the terminal cannot recognize the optimal independent transmit/transmit beam pair due to the difference of the high frequency station.
  • FIG. 1 is a flowchart of a data transmission method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of still another data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a first application scenario according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of Embodiment 1 of the present invention.
  • FIG. 6 is a flowchart of Embodiment 2 of the present invention.
  • FIG. 7 is a schematic diagram of a second application scenario according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of Embodiment 3 of the present invention.
  • Embodiment 4 of the present invention is a flowchart of Embodiment 4 of the present invention.
  • FIG. 10 is a flowchart of Embodiment 5 of the present invention.
  • FIG. 11 is a schematic diagram of a third application scenario according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of Embodiment 7 of the present invention.
  • FIG. 13 is a schematic diagram of a fourth application scenario according to an embodiment of the present invention.
  • FIG. 14 is a flowchart of Embodiment 8 of the present invention.
  • FIG. 15 is a flowchart of Embodiment 9 of the present invention.
  • FIG. 16 is a schematic diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of another data transmission apparatus according to an embodiment of the present invention.
  • the wireless signal energy transmitted by millimeter wave has high directivity.
  • the research results show that the wireless transmission is carried out in the 60 GHz band, and 99.99% of the signal energy is concentrated in the beam range of 4.7 degrees. Therefore, when wireless communication is performed using the millimeter wave band, usually Both directional antennas or phased arrays are used for directional transmission.
  • Both directional antennas or phased arrays are used for directional transmission.
  • the wavelength is 5 mm. If it is a 4 ⁇ 4 antenna array, the size of the antenna array is 1.5 cm ⁇ 1.5 cm.
  • the terminal can Antenna arrays with more array elements or more antenna arrays, therefore, from the configuration point of view, can support dual beamforming (BF, Beam Forming) and even multi-beam BF.
  • BF Beam Forming
  • an embodiment of the present invention provides a data transmission method, including the following steps:
  • Step 11 The base station informs the terminal base station of the transmit beam capability, and acquires the receive beam capability of the terminal.
  • Step 12 The base station determines, according to channel state information of different transceiver beam pairs reported by the terminal, an independent transceiver beam pair for transmitting data.
  • Step 13 When the determined number of independent transceiver beam pairs is at least two, the base station sends data to the terminal on each determined independent transceiver beam pair, and notifies the determined data transmission form of the independent transceiver beam pair to terminal.
  • the transmit beam capability refers to the number of transmitter transmit beams at the same time.
  • the receive beam capability refers to the number of receiver receive beams at the same time.
  • the independent transmit/receive beam pair refers to one transmit beam of the transmitter corresponding to only one receiver of the receiver. Beam pair of beams.
  • the base station notifying the transmit beam capability of the base station may include:
  • the base station informs the terminal base station of the transmit beam capability by the discovery signal during the beam discovery process; and/or,
  • the base station notifies the transmit beam capability of the terminal base station through broadcast or higher layer signaling.
  • the base station acquiring the receiving beam capability of the terminal may include:
  • the base station learns the receiving beam capability of the terminal by discovering the signal in the beam discovery process; and/or,
  • the base station learns the receiving beam capability of the terminal through the established link.
  • the transmit beam capability of the base station may include at least one of the following: a transmit beam capability of the same base station, a transmit beam capability of different base stations, and a transmit beam capability of a terminal acting as a relay node when the base station interacts with the terminal.
  • the data transmission form may include:
  • the relationship of each of the transmit beam bearer data may include at least one of the following:
  • the data carried by different transmit beams is the same, but the transmission rate of different transmit beams is different;
  • the transmission rate is the same, and the transmission rate is set according to the independent transceiver beam pair with the lowest channel state.
  • the bearer mode of the control channel of the service data may include at least one of the following:
  • Each transmit beam carries a control channel of the beam for indicating service data transmission of the beam
  • the transmit beam with the best channel state carries the control channel of all beams, and is used to indicate the service data transmission of all beams;
  • Each transmit beam carries a control channel of all beams for indicating service data transmission of all beams
  • the transmit beam with the best channel state carries the control channel of the beam, and the modulation and coding mode of the transmission data indicated by the control channel carried by the transmit beam carrying the channel state is determined according to the fixed level deviation of the transmit beam.
  • the base station notifies the terminal of the determined data transmission form of the independent transceiver beam pair, and may include at least one of the following:
  • the base station notifies the terminal of the determined data transmission form of the independent transceiver beam pair by using broadcast or high layer signaling;
  • the base station informs the terminal to enter a multi-beam link enhancement mode, wherein the multi-beam link enhancement mode stipulates a data transmission form for each of the independent transceiving beam pairs.
  • the base station determines, according to channel state information of different transceiver beam pairs reported by the terminal, an independent transceiver beam pair for transmitting data, which may include at least one of the following:
  • the base station determines, according to the channel state information of the different transceiver beam pairs reported by the terminal, that the transceiver beam pair whose channel state meets the first threshold is an independent transceiver beam pair for transmitting data, wherein the first threshold is that the code rate is greater than 1/10, a channel state transmitted by a specific modulation mode, where the specific modulation mode includes any one of the following: Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), however, this application is not limited thereto. In practical applications, other suitable specific modulation modes may be determined according to actual conditions;
  • BPSK Binary Phase Shift Keying
  • QPSK Quadrature Phase Shift Keying
  • QAM Quadrature Amplitude Modulation
  • the base station determines, according to the load of the base station, an independent transceiver beam pair for transmitting data from the pair of transceiver beams reported by the terminal;
  • the base station selects at least two transceiver beams with the best channel state from the pair of transceiver beams reported by the terminal. Paired as separate transmit and receive beam pairs for transmitting data;
  • the base station selects at least two transceiver beam pairs with the least interference from the transceiver beam pairs reported by the terminal as independent transmit and receive beam pairs for transmitting data.
  • an embodiment of the present invention further provides a data transmission method, including the following steps:
  • Step 21 The terminal learns the transmit beam capability of the base station, and sends its own receive beam capability to the base station.
  • Step 22 The terminal reports channel state information of different transceiver beam pairs to the base station.
  • Step 23 The terminal receives data transmitted on the at least two independent transceiver beam pairs according to data transmission forms of at least two independent transceiver beam pairs for transmitting data notified by the base station, and combines the received data.
  • step 21 the terminal learns that the transmit beam capability of the base station may include:
  • the terminal receives broadcast or higher layer signaling of the base station to learn the beam transmitting capability of the base station; and/or,
  • the terminal learns the beam transmitting capability of the base station by discovering the signal in the beam discovery process.
  • the terminal transmitting the capability of receiving the beam to the base station may include:
  • the terminal notifies the base station of the receiving beam capability of the terminal by the discovery signal during the beam discovery process; and/or,
  • the base station only identifies one transmit beam of the terminal, and the terminal informs the base station of the receive beam capability of the local terminal by signaling.
  • the terminal reporting the channel state information of the different transceiver beam pairs to the base station may include: the terminal reporting, to the base station, channel state information of the transceiver beam pair whose channel state meets the second threshold.
  • the second threshold is a channel state that meets a code rate greater than 1/10 and is transmitted in a specific modulation mode, where the specific modulation mode includes any one of the following: BPSK, QPSK, and QAM.
  • the specific modulation mode includes any one of the following: BPSK, QPSK, and QAM.
  • this application does not limit this. In practical applications, other suitable specific modulation methods may be determined according to actual conditions.
  • the data transmission form may include:
  • the relationship of each of the transmit beam bearer data may include at least one of the following:
  • the data carried by different transmit beams is the same, but the transmission rate of different transmit beams is different;
  • the transmission rate is the same, and the transmission rate is set according to the independent transceiver beam pair with the lowest channel state.
  • the terminal After the terminal reports the channel state information of the different transceiver beam pairs to the base station, the terminal receives the at least two independent transceiver beam pairs according to the data transmission form of the at least two independent transceiver beam pairs for transmitting data notified by the base station.
  • the method may at least include one of the following before transmitting the data and merging the received data:
  • the terminal learns the data transmission form of the independent transceiver beam pair through broadcast or high layer signaling of the base station;
  • the terminal Receiving, by the terminal, a notification of entering a multi-beam link enhancement mode from a base station, wherein the multi-beam link enhancement mode stipulates a data transmission form of each independent transceiving beam pair;
  • the terminal learns the service data transmission situation by detecting the control channel of each beam.
  • FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • the base station is a millimeter wave base station.
  • the description of this embodiment is as follows:
  • Step 31 The base station and the terminal perform beam capability information interaction; wherein, the base station informs the terminal base station of the transmit beam capability, and acquires the receive beam capability of the terminal; the terminal learns the transmit beam capability of the base station, and sends its own receive beam capability to the base station;
  • the transmit beam capability refers to the number of transmitter transmit beams at the same time, and the receive beam capability refers to the number of receive beams received by the receiver at the same time;
  • Step 32 Perform multi-beam training between the terminal and the base station; wherein the terminal determines a preferred transceiving beam pair (ie, a receive-transmit beam pair) based on multi-beam training;
  • Step 33 The terminal reports channel state information of the preferred transceiver beam pair to the base station, where the channel state information is, for example, a received signal to noise ratio or a quantized value thereof;
  • Step 34 The base station determines, according to the channel state information of the transceiver beam pair reported by the terminal, at least two independent transmit and receive beam pairs for transmitting data, and generates a data stream of each transmit beam.
  • Independent transmit beam pair means that one transmit beam of the transmitter corresponds to only one beam beam of one receive beam of the receiver;
  • Step 35 The base station notifies the terminal of the determined data transmission form of the at least two independent transceiver beam pairs for transmitting data.
  • Step 36 The terminal performs reception and combining on the received data of the multiple receive beams.
  • FIG. 4 is a schematic diagram of a first application scenario according to an embodiment of the present invention.
  • the line-of-sight (LOS) path between the base station and the terminal is blocked by the object, and there is a good reflection path between the terminal and the base station, and the terminal has multi-beam receiving capability (see FIG. 4).
  • it includes a receive beam (RX Beam) 1, a receive beam 2).
  • FIG. 5 is a flowchart of Embodiment 1 of the present invention.
  • the terminal identifies two pairs of excellent quality independent transmit and receive beam pairs based on the combination of the transmit and receive beams, and the terminal feeds back to the base station (such as a millimeter wave base station) to apply for multi-beam link enhancement.
  • the description of this embodiment is as follows:
  • Step 101 The base station sends a system message to the terminal, where the transmitting beam capability of the base station is carried.
  • the base station informs the terminal base station of the multi-beam transmitting capability and the resource configuration of each transmitting beam by using a system message.
  • the terminal does not perform the identification of the preferred beam when accessing the network. At this time, only low-rate data communication can be performed between the terminal and the base station;
  • Step 102 The base station sends resource configuration information for beam training through a common channel, and the base station separately configures for different terminal beam capability levels.
  • Step 103 The terminal reads the system message sent by the base station, and learns the transmit beam capability of the base station.
  • Step 104 The terminal measures channel conditions.
  • the terminal determines whether to perform multi-beam preferred beam identification according to the channel measurement result and the beam capability of the terminal; if the terminal determines that the link state of the terminal is superior according to the channel measurement result, for example, the terminal is located close to the base station, the terminal does not perform multi-beam optimization. Identification of the link; if the terminal judges that the link status of the terminal is poor according to the channel measurement result, the terminal needs to pass narrow beam identification to compensate for the link loss;
  • Step 105 If the terminal needs to compensate the link loss through the narrow beam, the terminal connects according to itself. Selecting a beam training capability (ie, the number of receiving beams) to select a corresponding beam training set;
  • Step 106 The terminal attempts different combinations of transceiver beams to identify a preferred independent transmit and receive beam pair (ie, a transmit-receive beam pair);
  • Step 107 The terminal feeds back the plurality of selected transceiver beam pairs to the base station, where the preferred beam is a 1/2 code rate, Quadrature Phase Shift Keying (QPSK) transmission and reception beam pair. And apply to enter the multi-beam link enhancement mode;
  • QPSK Quadrature Phase Shift Keying
  • Step 108 The base station selects at least two independent transmit and receive beam pairs with the best channel state according to the feedback content of the terminal to perform a multi-beam link enhancement mode.
  • Step 109 The base station notifies the terminal to switch to the multi-beam link enhanced mode by using the high-layer signaling, where the content carried in the signaling is as shown in Table 1, including: the transmit and receive beam numbers enabled in the link enhanced mode, and each transmit beam bearer. a data format, a modulation and coding scheme for each beam, and a beam carried by a control channel indicating service data;
  • Step 110 The base station transmits the same data on the at least two transmit beams for the terminal.
  • Step 111 The terminal acquires the high layer signaling of the base station, learns the beam pair that is enabled to be enhanced by the multi-beam link, and the corresponding data transmission form, and performs the data combining on the corresponding multiple receiving beams; wherein, when the terminal does not enter the multi-beam In the link enhancement mode, data reception is performed through a single beam.
  • FIG. 4 is a schematic diagram of a first application scenario according to an embodiment of the present invention.
  • the LOS path between the base station and the terminal is blocked by the object, and there is a good reflection path between the terminal and the base station, and the terminal has multi-beam receiving capability.
  • FIG. 6 is a flowchart of Embodiment 2 of the present invention.
  • the terminal always performs measurement based on the combination of the transmit and receive beams and feeds back the measured value to the base station, and the base station (such as the millimeter wave base station) identifies at least two preferred independent transmit and receive beam pairs according to the scheduling resource and the feedback of the terminal.
  • the station informs the terminal to enter the multi-beam link enhancement mode.
  • the description of this embodiment is as follows:
  • Step 201 The base station sends a system message to the terminal, which carries the transmit beam capability of the base station.
  • the base station informs the terminal base station of the multi-beam transmit capability and the resource configuration of each transmit beam by using a system message.
  • the terminal does not perform the identification of the preferred beam when accessing the network. At this time, only low-rate data communication can be performed between the terminal and the base station;
  • Step 202 The base station sends resource configuration information for beam training through a common channel, where the base station separately configures different terminal beam capability levels.
  • Step 203 The terminal reads the system message sent by the base station, and learns the transmit beam capability of the base station.
  • Step 204 The terminal measures channel conditions.
  • Step 205 The terminal attempts to perform channel measurement by combining different transmit and receive beams (ie, receive-transmit beams) according to the received beam capability of the terminal and the transmit beam configuration notified by the base station.
  • different transmit and receive beams ie, receive-transmit beams
  • Step 206 The terminal feeds back the corresponding channel measurement result to the base station, and the terminal feeds back the transmit/transmit beam pair that satisfies the 3/4 code rate and the 16 Quadrature Amplitude Modulation (QAM) transmission; In the beam link enhancement mode, the terminal only reports the received signal to noise ratio of the transceiver beam pair to the base station;
  • QAM Quadrature Amplitude Modulation
  • Step 207 The base station determines, according to the feedback content of the terminal, the quality of service (QoS) level of the terminal, and the scheduling status of the base station resource, whether the terminal configures the multi-beam enhanced link.
  • QoS quality of service
  • Step 208 If the transmit beam corresponding to the preferred beam fed back by the terminal is light and the terminal has a high QoS level, the base station turns on multiple beams for the terminal, and the transmit and receive beam pairs satisfy 0.9 code rate, 64QAM transmission, and determine the open transmit beam. Number and data transmission form for each beam;
  • Step 209 The base station informs the terminal to enter the multi-beam link enhancement mode by signaling, and the content carried in the signaling is as shown in Table 2, including: the transmit and receive beam number enabled in the link enhancement mode, the form of each transmit beam bearer data, a modulation coding scheme for each beam, and a beam carried by a control channel indicating service data;
  • the base station does not enable multiple beams for the terminal
  • Step 210 The base station transmits the same data on multiple transmit beams for the terminal.
  • Step 211 The terminal acquires the high layer signaling of the base station, learns the beam pair that is enabled to enter the multi-beam link enhancement, and the corresponding data transmission form, and performs data reception and combining on the corresponding multiple receiving beams.
  • the control channel used to indicate the arrival of the service data is always carried in the transmit beam i, and the receive signal to noise ratio corresponding to the transmit beam i is high.
  • the present application is not limited thereto.
  • the beam that dynamically controls the bearer control channel by polling or based on the load of the control channel is suitable for use in the present application.
  • FIG. 7 is a schematic diagram of a second application scenario according to an embodiment of the present invention.
  • FIG. 7 there is a LOS path between the terminal and the base station, and a non-line-of-sight (NLOS) path with excellent link quality, and the link quality difference between the LOS path and the NLOS path is large.
  • FIG. 8 is a flowchart of Embodiment 3 of the present invention.
  • the terminal attempts different combinations of the transmit and receive beams to measure and feed back the channel conditions of the preferred link
  • the base station identifies at least two preferred independent transmit and receive beam pairs for link enhancement according to the feedback and scheduling resources of the terminal, and the base station notifies the terminal.
  • Enter multi-beam link enhancement mode As shown in FIG. 8, the description of this embodiment is as follows:
  • Step 301 The base station sends a system message to the terminal, where the capability of transmitting the beam of the base station is carried.
  • the base station informs the terminal base station of the multi-beam transmission capability and the resource configuration of each transmit beam by using a system message.
  • the terminal does not perform the identification of the preferred beam when accessing the network. At this time, only low-rate data communication can be performed between the terminal and the base station;
  • Step 302 The base station sends resource configuration information for beam training through a common channel, and the base station separately configures different beam capability levels of the terminal.
  • Step 303 The terminal reads the system message sent by the base station, and learns the transmit beam capability of the base station.
  • Step 304 The terminal measures channel conditions.
  • Step 305 The terminal attempts different receiving and transmitting beam combinations according to its own receiving beam capability and the transmit beam configuration notified by the base station, and satisfies the transmission and reception of 1/5 code rate and Binary Phase Shift Keying (BPSK) transmission.
  • BPSK Binary Phase Shift Keying
  • the beam pair is fed back to the base station; the terminal does not determine whether to enter the multi-beam link enhancement mode, and the terminal only reports the preferred transceiver beam pair and the corresponding received signal-to-noise ratio to the base station;
  • BPSK Binary Phase Shift Keying
  • Step 306 The base station determines, according to the feedback content of the terminal, the QoS level of the terminal, and the scheduling status of the base station resource, whether the terminal configures the multi-beam enhanced link.
  • Step 307 If the transmit beam corresponding to the preferred beam fed back by the terminal is lightly loaded and the terminal has a high QoS level, the base station selects at least two transmit and receive beam pairs satisfying the 1/2 code rate and QPSK transmission for the terminal, on the beam pairs. Turn on multiple beams, and determine the number of open transmit beams and the data transmission form of each beam;
  • Step 308 The base station notifies the terminal to enter the multi-beam link enhancement mode by signaling, and the content carried in the signaling is as shown in Table 3, including: the transmit and receive beam number enabled in the link enhancement mode, and the format of each transmit beam bearer data. a modulation coding scheme for each beam, and a beam carried by a control channel indicating service data;
  • the base station does not enable multiple beams for the terminal
  • Step 309 The base station transmits the same data on the multiple transmit beams for the terminal, where the terminal The received signal-to-noise ratio corresponding to the transmitted and received beams is different.
  • the base station turns on multi-beam enhancement, the complete part of the data is transmitted on the beam with high received signal-to-noise ratio, and the partial redundancy of the data is transmitted on the beam with low received signal-to-noise ratio;
  • Step 310 The terminal acquires the high layer signaling of the base station, learns the beam pair that is enabled to enter the multi-beam link enhancement, and the corresponding data transmission form, and performs data reception and combining on the corresponding multiple receiving beams.
  • control channel for indicating the arrival of the service data is always transmitted from the transmit beam with the high received signal to noise ratio.
  • the other embodiments are optional. Others dynamically select the bearer control channel by polling or based on the load of the control channel. Beams are suitable for this application.
  • the redundant portion of the transmit/receive beam pair that transmits the data with a low signal-to-noise ratio is only an optional embodiment.
  • FIG. 7 is a schematic diagram of a second application scenario according to an embodiment of the present invention. As shown in Figure 7, there is a LOS path between the terminal and the base station and a NLOS path with excellent link quality, and the LOS path and the non-LOS path link quality are different.
  • FIG. 9 is a flowchart of Embodiment 4 of the present invention. In this embodiment, the terminal determines whether to apply for multi-beam link enhancement to the base station according to the channel measurement result. As shown in FIG. 9, the description of this embodiment is as follows:
  • Step 401 The base station sends a system message to the terminal, where the capability of transmitting the beam of the base station is carried.
  • the base station informs the terminal base station of the multi-beam transmission capability and the resource configuration of each transmit beam by using a system message.
  • the terminal does not perform the identification of the preferred beam when accessing the network. At this time, only low-rate data communication can be performed between the terminal and the base station;
  • Step 402 The base station sends resource configuration information for beam training through a common channel, and the base station separately configures different beam capability levels of the terminal.
  • Step 403 The terminal reads the system message sent by the base station, and learns the transmit beam capability of the base station.
  • Step 404 The terminal measures channel conditions.
  • the terminal determines whether to perform multi-beam preferred beam identification according to the channel measurement result and the beam capability of the terminal; if the terminal determines that the link state of the terminal is superior according to the channel measurement result, for example, the terminal is close to the base If the location of the station is not, the terminal does not identify the multi-beam preferred link; if the terminal determines that the link status of the terminal is poor according to the channel measurement result, the terminal needs to pass narrow beam identification to compensate for the link loss;
  • Step 405 If the terminal needs to compensate for the link loss through the narrow beam, the terminal attempts to select a different independent transmit/transmit beam pair according to the number of the received beams, and the terminal will satisfy the multiple received and received beam pairs.
  • the 5 bit rate and the QPSK transmitted beam pair are fed back to the base station, and the feedback message carries the received signal to noise ratio of each beam pair;
  • Step 406 The base station selects two independent transmit/receive beam pairs with the best channel state from the feedback content of the terminal to perform the multi-beam link enhancement mode.
  • Step 407 The base station determines the number of open transmit beams and the data transmission form of each beam.
  • Step 408 The base station notifies the terminal to switch to the multi-beam link enhancement mode by using the high-layer signaling, and the content carried in the signaling is as shown in Table 3, including: the transmit beam number enabled in the link enhancement mode, and each transmit beam bearer data format. a modulation coding scheme for each beam, and a bearer bearer for indicating a control channel;
  • Step 409 The base station transmits the same data on the multiple transmit beams of the terminal, where the received signal to noise ratio corresponding to the transceiver beam reported by the terminal is large, and the base station transmits the data on the beam with high received signal to noise ratio when multi-beam enhancement is enabled.
  • Step 410 The terminal acquires high-level signaling of the base station, and learns to enter the multi-beam link enhanced enabling beam and the corresponding data transmission form, and performs data reception and combining on the corresponding multiple receiving beams; wherein, when the terminal does not enter the multi-beam chain In the road enhancement mode, data reception is performed by a single beam.
  • the terminal performs multi-beam link enhancement by explicit signaling, which is only an optional embodiment.
  • Other implicit requests for the difference of the received signal-to-noise ratios of multiple transceiver beam pairs are also applicable to the present application.
  • FIG. 4 is a schematic diagram of a first application scenario according to an embodiment of the present invention.
  • the LOS path between the base station and the terminal is blocked by the object, and there is a good reflection path between the terminal and the base station, and the terminal has multi-beam receiving capability.
  • FIG. 10 is a flowchart of Embodiment 5 of the present invention.
  • the terminal identifies a plurality of preferred beams during initial access, and performs channel measurement based on the preferred beams.
  • the beam link enhancement request, the base station receives the measurement and request of the terminal, and determines whether to perform multi-beam enhancement according to its scheduling resource.
  • the description of this embodiment is as follows:
  • Step 501 Performing beam identification and preferred beam selection by the terminal and the base station in the initial network access process
  • Step 502 The base station sends a beam training sequence.
  • Step 503 The terminal measures a channel condition of the preferred beam that is initially accessed.
  • the terminal measures the received signal to noise ratio of different transceiver beams based on the preferred beam selected in the initial network access process and the number of received beams; the terminal determines whether the multiple beam chain should be requested according to the measured received signal to noise ratio. If the terminal judges the link state of the terminal according to the channel measurement result, for example, the terminal is located close to the base station, the terminal does not perform the identification of the multi-beam preferred link; if the terminal determines the link status of the terminal according to the channel measurement result Poor, the terminal needs to pass narrow beam identification to compensate for link loss;
  • Step 504 If the terminal needs to compensate the link loss through the narrow beam, the terminal selects a corresponding beam training set according to the number of the received beams.
  • Step 505 The terminal attempts different transmit and receive beam combinations (receive-transmit beam combination) to select a preferred independent transmit and receive beam pair.
  • Step 506 The terminal feeds back the selected multiple transmit and receive beam pairs to the base station, and the terminal only feeds back the optimal four beams.
  • the feedback message carries the channel status of each beam pair and applies for entering the multi-beam link enhancement mode.
  • Step 507 The base station determines, according to the feedback content of the terminal, the QoS level of the terminal, and the scheduling status of the base station resource, whether the terminal configures the multi-beam enhanced link.
  • Step 508 If the transmit beam corresponding to the preferred beam fed back by the terminal is light and the terminal has a high QoS level, the base station turns on multiple beams for the terminal, and selects at least two independent transmit and receive beam pairs that satisfy 1/3 code rate and QPSK transmission.
  • the signaling is used to notify the terminal to enter the multi-beam link enhanced mode.
  • the content carried in the signaling is as shown in Table 2, including: the transmit and receive beam number enabled in the link enhanced mode, the form of each transmit beam bearer data, and each beam. a modulation and coding scheme, a beam carried by a control channel indicating service data;
  • Step 509 The base station transmits the same data on multiple beams for the terminal.
  • Step 510 The terminal acquires the high layer signaling of the base station, learns the beam that enters the multi-beam link enhancement enablement, and the corresponding data composition form, and performs data reception and combining on the corresponding multiple receive beams; wherein, when the terminal does not enter the multi-beam chain In the road enhancement mode, data reception is performed by a single beam.
  • the implementation of the multi-beam link enhancement mode notified by the high layer signaling in this embodiment is only an optional embodiment, and other methods for notifying the link enhancement by means of physical layer control signaling are also applicable to the present application.
  • the base station comprehensively considers the QoS level of the terminal and the scheduling resource to determine whether to perform link enhancement for the terminal is only an optional embodiment, and the QoS or scheduling resource or other similar determination method is also applicable to the present application. .
  • FIG. 7 is a schematic diagram of a second application scenario according to an embodiment of the present invention.
  • the terminal completes the identification of the preferred beam at the time of initial access, the terminal attempts different measurement of the transmit and receive beam pairs, and the terminal measures the received signal and noise of the preferred beam and feeds back the measured value to the base station.
  • the base station determines whether to perform multi-beam link enhancement according to the feedback of the terminal, the QoS level of the terminal, and the scheduling resource.
  • the description of this embodiment is as follows:
  • Step 601 Performing beam identification and preferred beam selection by the terminal and the base station in the initial network access process
  • Step 602 The base station sends a beam training sequence.
  • Step 603 The terminal measures a channel condition of the preferred beam that is initially accessed.
  • the terminal measures the received signal to noise ratio of different transceiver beams based on the preferred beam selected in the initial network access process and the number of received beams; the terminal determines whether the request should be requested according to the channel measurement result and the movement condition of the terminal.
  • the beam link enhancement mode if the terminal judges that the link state of the terminal is excellent according to the channel measurement result and the terminal is stationary or the moving speed is low, for example, the terminal is in a position close to the base station and is in a static state, the terminal does not perform the identification of the multi-beam preferred link. If the terminal judges that the link status of the terminal is poor according to the channel measurement result, or the terminal moves at a high speed, the terminal needs to enhance the link robustness by using multiple beam enhancement;
  • Step 604 If the terminal needs to enhance the link robustness through the multi-beam link, the terminal root According to the number of receiving beams, try different combinations of transmitting and receiving beams to select a preferred independent transmitting and receiving beam pair;
  • Step 605 The terminal will report the transmit/receive beam pair that satisfies the 1/5 code rate and the BPSK transmission to the base station, and the feedback message carries the received signal to noise ratio corresponding to each beam.
  • Step 606 The base station determines, according to the feedback content of the terminal, the QoS level of the terminal, and the scheduling status of the base station resource, whether the terminal configures the multi-beam enhanced link.
  • the base station If the terminal feeds back the received signal to noise ratio of one beam, the base station considers that the terminal does not have the requirement of multi-beam link enhancement;
  • Step 607 If the terminal feeds back the received signal to noise ratio of the multiple beams, the base station considers that the terminal has multiple beam link enhancement requirements; if the preferred beam corresponding to the feedback beam of the terminal is lightly loaded and the terminal has a high QoS level, the base station does this.
  • the terminal turns on multiple beams that meet the 1/2 code rate and QPSK transmission, and notifies the terminal to enter the multi-beam link enhancement mode by signaling, and the content carried in the signaling is as shown in Table 3, including: enabled in the link enhancement mode. Transmit beam number, each transmit beam bearer data form, a modulation coding scheme for each beam, and a beam carried by a control channel indicating service data;
  • Step 608 The base station transmits the same data on multiple beams for the terminal.
  • Step 609 The terminal acquires the high layer signaling of the base station, and learns to enter the multi-beam link enhanced enabling beam and the corresponding data transmission form, and performs receiving data combining on the corresponding multiple receiving beams; wherein, when the terminal does not enter the multi-beam chain In the road enhancement mode, data reception is performed by a single beam.
  • the data transmission form of signaling the multi-beam by the signaling in this embodiment is only one optional embodiment.
  • Other multi-beam data transmission forms in which the terminal always detects multiple preferred beams and agrees to link enhancement are also applicable to the present invention. Application.
  • FIG. 11 is a schematic diagram of a third application scenario according to an embodiment of the present invention.
  • the terminal has multi-beam receiving capability, and the terminal interacts with the base station (Node) 1 to control information.
  • the terminal and the Node 1 and the Node 2 respectively identify a preferred beam, and the terminal has a good reflection path between the base stations (Node 1) with a relatively close distance, and the terminal and the distant base station (Node 2) have excellent quality.
  • the LOS path, and the LOS path channel quality of Node 2 is better than the reflection path of Node 1.
  • Figure 12 is the hair The flow chart of the seventh embodiment is shown. In this embodiment, the terminal feeds back to the base station to apply for multi-beam link enhancement. As shown in FIG. 12, the description of this embodiment is as follows:
  • Step 701 The base station 1 and the base station 2 send a system message to the terminal, where the transmit beam capability of the base station is carried;
  • Step 702 The base station 1 and the base station 2 send resource configuration information for beam training through a common channel, where the configuration information includes beam information of multiple base stations, and the base station separately configures different beam capability levels of the terminal;
  • Step 703 The terminal reads the system message sent by the base station, and learns the transmit beam capability of the base station.
  • Step 704 The terminal measures channel conditions of different transceiver beam combinations according to resource configuration of the multiple beams.
  • the terminal determines that the link state of the terminal is superior according to the channel measurement result, for example, the terminal is located close to the base station, the terminal does not perform multi-beam link enhancement; if the terminal determines the link status of the terminal or the moving speed of the terminal according to the channel measurement result Fast, the terminal needs to be enhanced by multi-beam link to improve link robustness;
  • Step 705 the terminal identifies the difference between the two preferred beams but preferably the link state of the beam, and the terminal has a high moving speed, and the terminal reports the channel condition of the beam that satisfies the 1/5 code rate and the BPSK transmission to the base station 1 ;
  • Step 706 The reporting information of the base station 1 and the base station 2 interacting with the terminal and the respective scheduling load;
  • Step 707 The base station 2 determines, according to the scheduling load and the QoS level of the terminal, whether to enable link enhancement of the terminal feedback beam.
  • Step 708 The base station 2 informs the base station 1 of whether the corresponding beam reported by the terminal is applied to the multi-beam link enhancement, and informs the data transmission form of the beam.
  • Step 709 The base station 1 determines the number of open transmit beams and the data transmission form of each beam.
  • Step 710 The base station 1 sends the multi-beam link enhanced message to the terminal by using signaling, and the signaling content includes a link enhanced open time offset and a link enhanced data transmission form, as shown in Table 4:
  • Step 711 The base station transmits the same data on multiple beams for the terminal.
  • Step 712 The terminal acquires the control signaling of the base station, learns the beam that enters the multi-beam link enhancement enablement, and the corresponding data transmission form, and performs reception data combining on the corresponding multiple receive beams, where the terminal does not enter the multi-beam chain.
  • data reception is performed by a single beam.
  • the terminal only controls the message to be exchanged with the base station 1 as an optional embodiment.
  • the other modes include that the terminal exchanges all beam information with each base station, and the terminal exchanges beam information of the base station with each base station, or any combination thereof is applicable. In this application.
  • the multi-beam link enhanced time offset is enabled, that is, the multi-beam link enhanced mode is started in the corresponding time unit after receiving the message, and the terminal does not need to detect other beams before. Control business data.
  • This mode is only an optional embodiment.
  • Other methods include Configuring the beam-on time, limiting the on-time of the enhanced beam, and arranging that the terminal receives the notification message and then starts detecting the control data of the enhanced beam.
  • FIG. 13 is a schematic diagram of a fourth application scenario according to an embodiment of the present invention.
  • the terminal has multi-beam receiving capability, and the terminal receives a configuration message about the beam from the base station 1; there is no backhaul between the base station 1 and the base station 2 (such as a primary base station), and the base station 1
  • the beam configuration information of the terminal base station 1 and the base station 2 is notified by signaling, and the beam configuration information includes the number of beams and the time-frequency code resource corresponding to the beam, and the terminal adjusts the reception beamwidth according to the beam configuration information of each base station, and the base station 1 and the base station 2
  • a preferred beam is identified separately, and there is only one reflection path between the terminal and the base station 1.
  • FIG. 14 is a flow chart of Embodiment 8 of the present invention. As shown in FIG. 14, the description of this embodiment is as follows:
  • Step 801 The base station 1 sends a system message to the terminal, where the transmit beam capability of the base station 1 and the base station 2 is carried;
  • Step 802 The base station 1 sends the resource configuration information for the beam training through the common channel.
  • the configuration information includes the beam information of the multiple base stations.
  • the beam capabilities of the different base stations are different.
  • the beam of the base station 2 is wider.
  • the configuration information carries the beam width. information;
  • Step 803 The terminal reads the system message sent by the base station, and learns the transmit beam capability of the base station.
  • Step 804 The terminal measures channel conditions of different transceiver beam combinations according to resource configurations of multiple beams and beamwidths of different base stations.
  • the terminal judges the link state of the terminal according to the channel measurement result, for example, the terminal is close to the base station and the terminal is stationary or the mobile speed is slow, the terminal does not perform multi-beam link enhancement; if the terminal determines the link of the terminal according to the channel measurement result If the condition is poor or the terminal moves fast, the terminal needs to be enhanced by multi-beam link to improve link robustness;
  • Step 805 In this embodiment, the terminal identifies the difference between the two preferred beams but preferably the link state of the beam, and the terminal has a high moving speed, and the terminal reports the channel condition of the preferred beam to the base station 1 and the base station 2;
  • Step 806 The base station 2 determines whether to enable multi-beam link enhancement according to its own beam load and the QoS class of the terminal.
  • Step 807 If the multi-beam link enhancement is enabled, the terminal needs to inform the terminal that the data transmission form of the beam is an integral part of the data, and the data is scrambled by using the identifier (ID) of the base station 2, and the notification content is as shown in Table 4;
  • Step 808 The base station 1 transmits an intact part of the data on the preferred beam
  • Step 809 The terminal acquires the control signaling of the base station, learns the beam that enters the multi-beam link enhancement enablement, and the corresponding data transmission form, and performs reception data combining on the corresponding multiple receive beams, where the terminal does not enter the multi-beam chain.
  • data reception is performed by a single beam.
  • FIG. 4 is a schematic diagram of a first application scenario according to an embodiment of the present invention.
  • the terminal has multi-beam receiving capability.
  • Figure 15 is a flow chart of Embodiment 9 of the present invention.
  • the terminal receives a configuration message about the beam from the base station.
  • the base station informs the beam configuration information of the terminal base station by signaling,
  • the beam configuration information includes a number of beams and a time-frequency code resource corresponding to the beam.
  • the terminal identifies the beam between the base station and the terminal according to the beam configuration information of the base station and measures the channel state of the feedback beam. There are two reflection paths between the terminal and the base station.
  • the base station selects a preferred beam from the plurality of beam feedback values of the terminal for multi-beam link enhancement. As shown in FIG. 15, the description of this embodiment is as follows:
  • Step 901 The base station sends a system message to the terminal, where the transmit beam capability of the base station and the resource corresponding to the transmit beam are carried.
  • Step 902 The base station sends resource configuration information for beam training through a common channel, where the configuration information includes information for the terminal to perform beam discovery, such as a sequence corresponding to the beam, a pilot configuration corresponding to the beam, a time resource corresponding to the beam, and a beam correspondence.
  • the configuration information includes information for the terminal to perform beam discovery, such as a sequence corresponding to the beam, a pilot configuration corresponding to the beam, a time resource corresponding to the beam, and a beam correspondence.
  • Frequency domain resources such as a sequence corresponding to the beam, a pilot configuration corresponding to the beam, a time resource corresponding to the beam, and a beam correspondence.
  • Step 903 The terminal measures a channel state.
  • the terminal When the terminal finds a channel state difference corresponding to each beam according to the channel measurement value, and the terminal determines that it has a faster moving speed, the terminal sends a multi-beam link enhancement request to the base station;
  • Step 904 The terminal selects a corresponding beam training set according to its own beam capability.
  • Step 905 The terminal attempts multiple receive-transmit beam combinations to identify a preferred transmit-receive beam pair.
  • Step 906 The terminal feeds back the preferred transmit-receive beam pair to the base station, and applies to enter the multi-beam link enhancement mode.
  • the terminal acquires the system message of the base station to perform beam identification, and the terminal measures the channel state of the corresponding beam, and feeds back the transceiver beam pair and the corresponding channel state that meet the second threshold to the base station, where the second threshold is satisfied.
  • the channel status of 1/5 code rate and binary phase shift keying (BPSK) transmission as shown in Table 5:
  • the receiving beams iR and jR of the terminal correspond to three transmitting beams satisfying the second threshold, namely (iR, iT), (jR, jT), (jR, kT), and the channel states of the transmitting and receiving beam pairs are MCSx, respectively.
  • MCSx, MCSy wherein the corresponding channel quality of the MCSx is higher than MCSy;
  • Step 907 The base station receives the link enhancement request of the terminal and the channel state of the terminal for each beam, and the base station identifies the transmit beam for performing multi-beam link enhancement. Since the transmit beam numbers jT and kT correspond to the same receive beam, therefore, There is potential interference between the two beam combinations. In this case, the base station selects a transmit beam that satisfies the 1/5 code rate and the BPSK transmission numbers iT and jT for multi-beam link enhancement;
  • Step 908 The base station notifies the terminal to enter the multi-beam link enhancement mode.
  • the data transmitted by the base station on the two transmit beams is in the form of transmitting data at the same code rate and modulation order on both transmit beams, transmitting a complete portion of the data on the two transmit beams, and the base station is at two transmit beams.
  • the control information of the arrival of the data is respectively sent, and the notification information is as shown in Table 6:
  • Step 909 The base station transmits the same data on multiple beams for the terminal.
  • Step 910 The terminal separately receives data on the receive beams iR and jR according to the control information indication of the base station, and combines data of two receive beams; wherein, when the terminal does not enter the multi-beam link enhanced mode, the single beam passes through Data reception.
  • different nodes send the same content, or one of the nodes sends complete data, another node sends partial redundant data, or the data is respectively carried on the beams corresponding to the two nodes;
  • the measurement beam link determines whether to request multi-beam link enhancement, or the terminal always feeds back the link status corresponding to the multiple beams, and the base station determines whether to perform link enhancement according to the scheduling resource;
  • the node participating in the multi-beam may be a high-frequency node or has The end of high frequency function End device; one of the participating nodes acts as the master node, or the node participating in the link enhancement to reduce the delay and information interaction directly sends the configuration message and data to the terminal; thus, the embodiment of the present invention implements the high frequency communication. Improve link robustness.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a base station, and includes: a first beam capability interaction module 161, configured to notify a terminal base station of a transmit beam capability, and acquire a receive beam of the terminal.
  • the first processing module 162 is configured to determine an independent transceiver beam pair for transmitting data according to channel state information of different transceiver beam pairs reported by the terminal;
  • the first transmission module 163 is configured to be the first processing module 162.
  • the determined number of independent transceiver beam pairs is at least two, data is transmitted to the terminal on each determined independent transceiver beam pair, and the determined data transmission form of the independent transceiver beam pair is notified to the terminal.
  • the first processing module 162 is, for example, a processor or other component having information processing capability
  • the first beam capability interaction module 161 and the first transmission module 163 are, for example, communication elements having data transmission capabilities.
  • the first processing module 162 is configured to perform at least one of the following:
  • the transceiver beam pair whose channel state meets the first threshold is an independent transceiver beam pair for transmitting data; wherein, the first threshold is that the code rate is greater than 1/10, and the specific threshold is Channel state of the modulation mode transmission, where the specific modulation mode includes any one of the following: BPSK, QPSK, QAM;
  • the at least two transceiver beam pairs with the least interference are selected from the transceiver beam pairs reported by the terminal as independent transmit and receive beam pairs for transmitting data.
  • the embodiment of the present invention further provides a data transmission apparatus, which is applied to a terminal, and includes: a second beam capability interaction module 171, configured to learn the transmit beam capability of the base station, and send its own reception to the base station.
  • the second transmission module 172 is configured to report channel state information of different transceiver beam pairs to the base station; the second processing module 173 is configured to notify according to the base station.
  • the second processing module 173 is, for example, a processor or other component having information processing capability
  • the second beam capability interaction module 171 and the second transmission module 172 are, for example, communication elements having data transmission capabilities.
  • the second transmission module 172 is configured to: report, to the base station, channel state information of the transceiver beam pair whose channel state meets the second threshold.
  • the second threshold is a channel state that meets a code rate greater than 1/10 and is transmitted in a specific modulation mode, where the specific modulation mode includes any one of the following: BPSK, QPSK, and QAM.
  • the embodiment of the present invention further provides a data transmission system, including the data transmission device shown in FIG. 16 and the data transmission device shown in FIG.
  • Embodiments of the present invention also provide a computer readable storage medium storing computer executable instructions, the computer executable to implement the above data transmission method applied to a base station when an instruction is executed.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the computer executable to implement the above data transmission method applied to the terminal when the instruction is executed.
  • the embodiment of the present invention provides a data transmission method, device, and system, which implements data transmission through at least two independent transceiver beam pairs, improves reliability of a millimeter wave link, and reduces downlink synchronization and independent transmission and reception beam pairs.
  • the delay of the identification process improves the access speed of the terminal to the high-frequency station; reduces the complexity of the terminal to identify the optimal independent transceiver beam pair, improves the accuracy of beam identification, and avoids the difference due to high-frequency stations.
  • the resulting terminal cannot identify the optimal independent transmit and receive beam pair.

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Abstract

L'invention concerne un procédé de transmission de données, comprenant les étapes suivantes : une station de base informe un terminal de la capacité de transmission de faisceau de la station de base et acquiert la capacité de réception de faisceau du terminal ; la station de base détermine une paire de faisceaux de réception/transmission indépendante pour une transmission de données selon des informations d'état de canal concernant différentes paires de faisceaux de réception/transmission rapportées par le terminal ; et lorsque le nombre des paires de faisceaux de réception/transmission indépendantes déterminées est au moins de deux, la station de base envoie des données sur chacune des paires de faisceaux de réception/transmission indépendantes déterminées au terminal, et informe le terminal d'une forme d'envoi de données de la paire de faisceaux de réception/transmission indépendante déterminée. Le procédé de transmission de données est utilisé pour résoudre le problème selon lequel une transmission de données n'est pas mise en œuvre au moyen d'un faisceau double ou de multiples faisceaux dans la technologie de projet de partenariat de troisième génération (3GPP) ou 802.11 pertinente.
PCT/CN2016/092717 2015-08-14 2016-08-01 Procédé, dispositif et système de transmission de données WO2017028676A1 (fr)

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Cited By (7)

* Cited by examiner, † Cited by third party
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WO2022083525A1 (fr) * 2020-10-23 2022-04-28 索尼集团公司 Dispositif électronique et procédé de communication sans fil et support de stockage lisible par ordinateur
CN112788614A (zh) * 2021-01-13 2021-05-11 上海闻泰信息技术有限公司 波束赋形的方法和装置、波束赋形系统和计算机存储介质

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