WO2018028464A1 - Procédé et dispositif de renvoi d'informations d'état de canal - Google Patents

Procédé et dispositif de renvoi d'informations d'état de canal Download PDF

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Publication number
WO2018028464A1
WO2018028464A1 PCT/CN2017/095392 CN2017095392W WO2018028464A1 WO 2018028464 A1 WO2018028464 A1 WO 2018028464A1 CN 2017095392 W CN2017095392 W CN 2017095392W WO 2018028464 A1 WO2018028464 A1 WO 2018028464A1
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WIPO (PCT)
Prior art keywords
sequence number
antenna weight
receiver antenna
receiving end
channel response
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PCT/CN2017/095392
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English (en)
Chinese (zh)
Inventor
高波
李儒岳
袁弋非
王欣晖
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中兴通讯股份有限公司
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Publication of WO2018028464A1 publication Critical patent/WO2018028464A1/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
    • 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
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for feeding back channel state information.
  • high-band communication also faces the challenge of link attenuation, specifically including large loss of propagation path, greater absorption of air absorption (especially oxygen), and heavy rain attenuation. Faced with these challenges, high-band communication systems can take advantage of the high frequency band and short antenna integration, and achieve high antenna gain and signal transmission loss through multi-antenna array and beamforming schemes to ensure link margin. And improve communication robustness.
  • the high frequency band transmitting end transmits the training pilot, and the receiving end receives the channel and performs channel estimation. Then, the high-band training receiving end needs to feed back the channel state information to the training transmitting end, so that the receiving and transmitting end can find the multiple sets of receiving and transmitting ends that can be used for the multi-channel data transmission from the optional receiving and transmitting antenna weighting pair.
  • Antenna weight pairs improve overall spectral efficiency.
  • the existing channel state information feedback scheme acquires and feeds back the precoding matrix sequence number and channel state information by processing the received pilot.
  • the pilot transmitter can only use different spatial paths from the airspace based on the current channel state information. The path is resolved, and the cost of success is low. Furthermore, it is difficult for the receiving and transmitting end to ensure that the ideal transmitting precoding weight and the receiving antenna weight are found.
  • the embodiment of the present invention provides a method and a device for feeding back channel state information, so as to at least solve the related art, the pilot transmitting end (corresponding to the transmitting end) can only distinguish different physical paths from the air domain based on the current channel state information.
  • the problem of low success rate is low.
  • a method for feeding back channel state information includes: receiving, by a receiving end, at least one pilot transmitted by a transmitting end according to a receiving antenna weight; the receiving end is under at least one of the pilots And performing channel measurement by using the weight of the receiving end antenna to obtain channel state information; and the receiving end feeds back the channel state information to the transmitting end.
  • the at least one pilot is generated on the sending end side by one of the following methods: all generated by one same pre-coding group of the transmitting end; and generated by a plurality of pre-coding groups of the transmitting end.
  • the channel state information includes one of the following: a receiver antenna weight sequence number group, where the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number includes at least one The relative delay information of the time domain channel response or the frequency component in the frequency domain channel response; the receiver antenna weight sequence number group, wherein the receiving antenna weight sequence number group includes at least one receiving antenna weight number, the receiving antenna The weight sequence number includes relative delay information of at least one time domain channel response or a frequency component and at least one channel quality information in the frequency domain channel response; and a receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one The receiving end antenna weight sequence number includes the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitting end precoding matrix sequence number.
  • the relative delay information of the time domain channel response is selected by the receiving antenna weight in the following manner: selecting a relative delay under a baseband time domain channel response tap that is greater than or equal to the first threshold; Or, under the number of taps of the second threshold, select the baseband time domain channel ringing The relative delay with the strongest energy in the tap should be used.
  • the frequency component in the frequency domain channel response is selected by the receiving antenna weight in the following manner: selecting a frequency component in a baseband frequency domain channel response greater than or equal to the first threshold; or The number of frequency components of the second threshold is selected to have the most powerful energy component of the baseband frequency domain channel response.
  • the receiver antenna weight number is represented by a packet sequence number.
  • the packet sequence number is transmitted by: a time-frequency code resource carrying a feedback signal; or an explicit output sequence number value.
  • the sender precoding matrix sequence number includes at least one of: a sender precoding matrix sequence number in the pilot transmission phase; and a sender precoding matrix sequence number in the data transmission phase.
  • the sender precoding matrix sequence number is transmitted by: time-frequency code resources carrying a feedback signal; or explicitly outputting a sequence number value.
  • the precoding matrix corresponding to the sequence number of the precoding matrix of the transmitting end includes one of the following: a radio frequency analog precoding matrix; a digital baseband precoding matrix; a radio frequency analog and a digital baseband hybrid precoding matrix.
  • the method includes at least one of: a relative delay information of the at least one time domain channel response or a one-to-one correspondence between the frequency component in the frequency domain channel response and the at least one channel quality information; There is a one-to-one correspondence between the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitting end precoding matrix sequence number.
  • the receiving end antenna weight includes at least one of: a weight vector generated by the digital baseband and loaded at the receiving end antenna unit; and a weight vector loaded by the analog radio frequency to be loaded at the receiving end antenna unit; A weight vector loaded at the receiving end antenna unit by a digital baseband and an analog radio.
  • the receiving antenna weight includes at least one of: a constant amplitude and a finite phase optional receiving antenna weight; a finite amplitude optional and constant phase receiving antenna weight; and an amplitude and phase unrestricted receiving End antenna weight.
  • a method for feeding back channel state information includes: transmitting, by a transmitting end, at least one pilot to a receiving end; and receiving, by the transmitting end, channel state information fed back by the receiving end, where The channel state information is that the receiving end obtains channel state information by using the receiving antenna weight to perform channel measurement under the at least one pilot.
  • the method further includes: the sending end generates the at least one pilot by using a same transmitting precoding group; Alternatively, the transmitting end generates the at least one pilot by using multiple sender precoding groups.
  • the channel state information includes one of the following: a receiver antenna weight sequence number group, where the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number includes at least one The relative delay information of the time domain channel response or the frequency component in the frequency domain channel response; the receiver antenna weight sequence number group, wherein the receiving antenna weight sequence number group includes at least one receiving antenna weight number, the receiving antenna The weight sequence number includes relative delay information of at least one time domain channel response or a frequency component and at least one channel quality information in the frequency domain channel response; and a receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one The receiving end antenna weight sequence number includes the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitting end precoding matrix sequence number.
  • the receiver antenna weight number is represented by a packet sequence number.
  • the sequence of the precoding matrix of the transmitting end includes at least one of the following: a sequence number of the precoding matrix of the transmitting end in the pilot transmitting phase, and a sequence number of the precoding matrix of the transmitting end in the data transmission phase.
  • the precoding matrix corresponding to the sequence number of the precoding matrix of the transmitting end includes one of the following: a radio frequency analog precoding matrix; a digital baseband precoding matrix; a radio frequency analog and a digital baseband hybrid precoding matrix.
  • the receiving end antenna weight includes at least one of: a weight vector generated by the digital baseband and loaded at the receiving end antenna unit; and a weight vector loaded by the analog radio frequency to be loaded at the receiving end antenna unit; A weight vector loaded at the receiving end antenna unit by a digital baseband and an analog radio.
  • the receiving antenna weight includes at least one of: a constant amplitude and a finite phase optional receiving antenna weight; a finite amplitude optional and constant phase receiving antenna weight; and an amplitude and phase unrestricted receiving End antenna weight.
  • a feedback device for channel state information which is applied to a receiving end, and includes: a first receiving module, configured to receive at least one pilot sent by a transmitting end according to a weight of a receiving antenna; The measuring module is configured to perform channel measurement by using the receiving antenna weight to obtain channel state information under at least one of the pilots, and the feedback module is configured to feed back the channel state information to the transmitting end.
  • the channel state information includes one of the following: a receiver antenna weight sequence number group, where the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number includes at least one The relative delay information of the time domain channel response or the frequency component in the frequency domain channel response; the receiver antenna weight sequence number group, wherein the receiving antenna weight sequence number group includes at least one receiving antenna weight number, the receiving antenna The weight sequence number includes relative delay information of at least one time domain channel response or a frequency component and at least one channel quality information in the frequency domain channel response; and a receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one The receiving end antenna weight sequence number includes the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitting end precoding matrix sequence number.
  • a feedback device for channel state information is further provided, which is applied to a transmitting end, and includes: a sending module, configured to send at least one pilot to a receiving end; and a second receiving module configured to receive The channel state information fed back by the receiving end, wherein the channel state information is that the receiving end obtains channel state information by using the receiving antenna weight to perform channel measurement under the at least one pilot.
  • the apparatus further includes one of: a first generating module, configured to generate, by the sending end, a precoding group by the same sender before transmitting the at least one pilot to the receiving end.
  • the at least one pilot is configured to generate, by the transmitting end, the at least one pilot by using a plurality of sender precoding groups before transmitting the at least one pilot to the receiving end.
  • the channel state information includes one of the following: a receiver antenna weight sequence number group, where the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number includes at least one The relative delay information of the time domain channel response or the frequency component in the frequency domain channel response; the receiver antenna weight sequence number group, wherein the receiving antenna weight sequence number group includes at least one receiving antenna weight number, the receiving antenna The weight sequence number includes relative delay information of at least one time domain channel response or a frequency component and at least one channel quality information in the frequency domain channel response; and a receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one The receiving end antenna weight sequence number includes the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitting end precoding matrix sequence number.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the above steps.
  • the receiving end since the receiving end performs channel measurement using the antenna weight of the receiving end under at least one of the pilots, the channel state information is obtained; and the receiving end feeds back the relative delay information in the channel state information to the transmitting end. Therefore, it can be solved in the related art that the pilot transmitting end can only distinguish different physical paths from the air domain based on the current channel state information, and the cost success rate is large.
  • a low problem is achieved by indicating that the pilot transmitting end jointly distinguishes the critical path from the time dimension and the spatial dimension, and on the one hand, can improve the probability of success of the pilot transmitting end for different physical paths; on the other hand, it facilitates the joint receiving of the pilot transmitting end.
  • the optimal configuration of the transmitter precoding weight and the receiver antenna weight are configured to achieve an effective improvement of the overall wireless communication spectrum efficiency.
  • FIG. 1 is a block diagram showing the hardware structure of a mobile terminal of a method for feeding back channel state information according to an embodiment of the present invention
  • FIG. 2 is a flow chart (1) of a method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart (2) of a method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a hybrid precoding (beamforming) transceiver according to an embodiment of the present invention
  • FIG. 5 is a flow chart of a schematic diagram of a hybrid precoding (beam) training scenario in accordance with an alternative embodiment of the present invention
  • FIG. 6 is a schematic diagram of a hybrid precoding (beam) pilot structure according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram (1) of channel state information acquisition according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram (2) of channel state information acquisition according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a correspondence relationship of channel state information according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of time-frequency resource mapping of feedback information according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of precoding (beam) training and channel state information feedback according to an embodiment of the present invention
  • FIG. 12a is a flowchart of a frequency domain transmission reference signal according to an embodiment of the present invention.
  • FIG. 12b is a schematic diagram of a frequency domain transmission reference signal according to an embodiment of the present invention.
  • FIG. 13 is a structural block diagram (1) of a feedback apparatus for channel state information according to an embodiment of the present invention.
  • FIG. 14 is a structural block diagram (2) of a feedback apparatus for channel state information according to an embodiment of the present invention.
  • 15 is a block diagram showing a preferred configuration of a feedback apparatus for channel state information according to an embodiment of the present invention.
  • FIG. 1 is a hardware structural block diagram of a mobile terminal of a method for feeding back channel state information according to an embodiment of the present invention.
  • mobile terminal 10 may include one or more (only one shown in FIG. 1) processor 102 (processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA.
  • FIG. 1 is merely illustrative and does not limit the structure of the above electronic device.
  • the mobile terminal 10 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.
  • the memory 104 can be used to store software programs of the application software and modules, such as program instructions/modules corresponding to the method of feedback of channel state information in the embodiment of the present invention, and the processor 102 runs the software programs and modules stored in the memory 104. Thereby performing various functional applications and data processing, that is, implementing the above method.
  • Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 104 can further include relative to The processor 102 remotely sets a memory that can be connected to the mobile terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 106 is for receiving or transmitting data via a network.
  • the above-described network specific example may include a wireless network provided by a communication provider of the mobile terminal 10.
  • the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 106 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.
  • NIC Network Interface Controller
  • RF Radio Frequency
  • FIG. 2 is a flowchart (1) of a method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
  • Step S202 the receiving end receives at least one pilot that is sent by the sending end in the time domain or the frequency domain according to the receiving antenna weight;
  • Step S204 the receiving end performs channel measurement by using the weight of the receiving end antenna under at least one pilot, to obtain channel state information.
  • Step S206 the receiving end feeds back the channel state information to the sending end.
  • the problem that the pilot transmitting end can only distinguish different physical paths from the air domain based on the current channel state information in the related art, and the cost success rate is low, and the indication pilot transmitting end from the time dimension and the spatial dimension can be solved.
  • it can improve the success probability of the pilot transmitting end for different physical paths; on the other hand, it is beneficial for the pilot transmitting end to jointly configure the transmitting end precoding weight and the receiving end antenna weight. Achieve an effective improvement in the overall wireless communication spectrum efficiency.
  • the receiving end may be a terminal, but is not limited thereto.
  • the at least one pilot may be generated on the transmitting end side by one of the following methods: all generated by one same pre-coding group of the transmitting end; and generated by a plurality of pre-coding groups of the transmitting end.
  • the channel state information may include one of the following: a receiver antenna weight sequence number group, where the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number. a relative delay information including at least one time domain channel response or a frequency component in a frequency domain channel response; a receiver antenna weight sequence number group, wherein the receiving antenna weight sequence number group includes at least one receiving antenna weight number, and the receiving end The antenna weight number includes at least one time delay channel response relative frequency information or a frequency component in the frequency domain channel response and at least one channel quality information; the receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one The receiver antenna weight sequence number includes the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one sender precoding matrix sequence number.
  • the receiving end includes the relative delay information of the time domain channel response or the frequency component in the frequency domain channel response in the feedback channel information, which is beneficial to instruct the transmitting end to jointly distinguish the critical path from the time dimension and the spatial dimension,
  • the aspect can improve the success probability of the pilot transmitting end for different physical paths; on the other hand, it is beneficial for the pilot transmitting end to jointly configure the transmitting end precoding weight and the receiving end antenna weight to achieve the overall wireless communication spectrum efficiency. Effective improvement.
  • the relative delay represents the difference between the current receiving path and a certain standard time point.
  • the time point may be the synchronization time after the synchronization of the pilot, or the time based on the reception of a specific pilot; the relative delay information of the time domain channel response or the frequency domain channel response.
  • the frequency component can facilitate the transceiver to distinguish the physical path; the traditional transceiver is path-resolved by the spatial dimension, and the time dimension is added to improve the resolution efficiency.
  • the relative delay information of the time domain channel response may be selected by using the weight of the antenna at the receiving end by selecting a baseband time domain channel response tap that is greater than or equal to the first threshold. Relative delay; or, at the number of taps of the second threshold, the relative delay of the strongest energy in the baseband time domain channel response tap is selected.
  • the frequency component in the baseband frequency domain channel response greater than or equal to the first threshold is selected; or, in the frequency component of the second threshold, the selected baseband frequency domain channel response has The frequency component of the strongest energy.
  • the receiving antenna weight number may be represented by a packet sequence number.
  • the foregoing packet sequence number may be transmitted by: a time-frequency code resource carrying a feedback signal; or an explicit output sequence number value.
  • the sender precoding matrix sequence number may include at least one of: a transmitter precoding matrix sequence number in the pilot transmission phase; and a sender precoding matrix sequence number in the data transmission phase.
  • the sequence number of the pre-coding matrix of the transmitting end may be transmitted by: a time-frequency code resource carrying a feedback signal; or an explicit output sequence number value.
  • the feedback signal is the channel state information under the pointer to the particular packet, ie the feedback signal may be a subset of the channel state.
  • the precoding matrix corresponding to the sender precoding matrix sequence number may include one of the following: a radio frequency analog precoding matrix; a digital baseband precoding matrix; a radio frequency analog and a digital baseband hybrid precoding matrix.
  • the relative delay information of the at least one time domain channel response or the frequency component of the frequency domain channel response and the at least one channel quality information have a one-to-one correspondence a relationship; a relative correspondence between the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitting end precoding matrix sequence number.
  • there is a one-to-one correspondence between the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response and the at least one channel quality information as shown in Table 1:
  • the receiving antenna weight may include at least one of: a weight vector generated by the digital baseband and loaded on the receiving antenna unit; and an analog RF generated loading at the receiving antenna unit. Weight vector; a weight vector loaded by the digital baseband and the analog radio frequency coupled to the antenna unit at the receiving end.
  • the receiving antenna weight may include at least one of: constant amplitude and finite phase optional receiving antenna weight; finite amplitude optional and constant phase receiving antenna weight; amplitude and phase Receiver antenna weights without constraints.
  • FIG. 3 is a flowchart (2) of a method according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
  • Step S302 the transmitting end sends at least one pilot to the receiving end
  • Step S304 the transmitting end receives the channel state information fed back by the receiving end, wherein the channel state information is that the receiving end performs channel measurement by using the receiving antenna weight under the at least one pilot, and obtains channel state information.
  • the receiving end is at least one pilot
  • the receiving antenna weight is utilized.
  • Channel measurement is performed to obtain channel state information; the receiving end feeds back relative delay information in the channel state information to the transmitting end. Therefore, the problem that the pilot transmitting end can only distinguish different physical paths from the air domain based on the current channel state information in the related art, and the large success rate of the cost is low, and the indication pilot transmitting end is combined from the time dimension and the spatial dimension. Differentiating the critical path can improve the probability of success of the pilot transmitting end for different physical paths; on the other hand, it is beneficial for the pilot transmitting end to jointly configure the transmitting end precoding weight and the receiving end antenna weight to achieve optimal The overall wireless communication spectrum efficiency is effectively improved.
  • the foregoing sending end may be a base station, but is not limited thereto.
  • the method may further include: the sending end generating the at least one pilot by using a same transmitting precoding group; Alternatively, the transmitting end generates the at least one pilot by using a plurality of transmitting precoding groups.
  • the channel state information may include one of the following: a receiver antenna weight sequence number group, where the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number. a relative delay information including at least one time domain channel response or a frequency component in a frequency domain channel response; a receiver antenna weight sequence number group, wherein the receiving antenna weight sequence number group includes at least one receiving antenna weight number, and the receiving end The antenna weight number includes at least one time delay channel response relative frequency information or a frequency component in the frequency domain channel response and at least one channel quality information; the receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one The receiver antenna weight sequence number includes the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one sender precoding matrix sequence number.
  • the receiving end includes the relative delay information of the time domain channel response or the frequency component in the frequency domain channel response in the feedback channel information, and the transmitting end can jointly distinguish the critical path from the time dimension and the spatial dimension. The probability of distinguishing the success of the pilot transmitting end for different physical paths is improved.
  • the pilot transmitting end and the receiving end are configured to configure the optimal transmitting precoding weight and the receiving antenna weight to achieve effective overall wireless communication spectrum efficiency. Upgrade.
  • the receiver antenna weight number is represented by a packet sequence number.
  • the serial number of the precoding matrix of the transmitting end may include at least one of the following: a precoding matrix sequence number of the transmitting end in the pilot transmitting phase (such as a training beam serial number of the transmitting end); a precoding matrix sequence number of the transmitting end of the data transmission phase (such as a transmitting end transmission) Beam number).
  • the precoding matrix corresponding to the sender precoding matrix sequence number may include one of the following: a radio frequency analog precoding matrix; a digital baseband precoding matrix; a radio frequency analog and a digital baseband hybrid precoding matrix.
  • the relative delay information of the at least one time domain channel response or the frequency component of the frequency domain channel response and the at least one channel quality information have a one-to-one correspondence a relationship; a relative correspondence between the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitting end precoding matrix sequence number.
  • the receiving antenna weight packet may include at least one of the following: a weight vector generated by the digital baseband and loaded on the receiving antenna unit; and an analog RF generated loading at the receiving antenna unit. Weight vector; a weight vector loaded by the digital baseband and the analog radio to load the antenna unit at the receiving end.
  • the receiving antenna weight may include at least one of: constant amplitude and finite phase optional receiving antenna weight; finite amplitude optional and constant phase receiving antenna weight; amplitude and phase Receiver antenna weights without constraints.
  • FIG. 4 is a schematic structural diagram of a hybrid precoding (beamforming) transceiver for the present embodiment.
  • the system transmitting end and receiving end configure multiple antenna units and multiple radio frequency links.
  • each RF link is interconnected with the antenna array unit (not including part of the connection scenario), and each antenna unit has a digital keyed phase shifter.
  • the high-band system implements beamforming on the analog side by applying different phase shift amounts to the signals on the respective antenna elements.
  • Each signal stream is loaded with an antenna weight vector (Antenna Weight Vector, AWV for short) through a digitally keyed phase shifter.
  • AWV antenna weight vector
  • the line unit is sent to the high frequency physical propagation channel; at the receiving end, the radio frequency signal stream received by the multiple antenna unit is weighted and combined into a single signal stream, and the receiver finally obtains multiple received signal streams through the radio frequency demodulation of the receiving end. And is sampled and received by the digital baseband.
  • Figure 5 is a schematic diagram of a hybrid precoding (beam) training scenario.
  • a hybrid precoding (beam) training is initiated between the pilot transmitting end and the pilot receiving end, and Path 0 and Path 1 indicate effective physical path directions.
  • the information to be fed back by the pilot receiving end needs to indicate the weight number of the receiving end antenna, and select the serial number of the transmitting precoding matrix that effectively points to the above path from the optional precoding matrix in the specific receiving antenna weight number, and measure the corresponding Relative delay and channel quality information.
  • FIG. 6 is a schematic diagram of a hybrid precoding (beam) pilot structure according to an embodiment of the present invention.
  • the precoding (beam) training feature indicator is first sent to the notification pilot receiving end; then, by the pilot transmitting end, pilot 1 to pilot N are sequentially transmitted to the pilot receiving end.
  • the pilots are generated by a same pre-coding group of the same transmitting end, or are generated by different pre-coding groups of the transmitting end, or are respectively generated by pre-coding by several groups of transmitting ends;
  • FIG. 7 is a schematic diagram (1) of channel state information acquisition according to an embodiment of the present invention. As shown in Figure 7, the following steps are included:
  • S702 Perform channel time domain estimation. If the pilot is transmitted in the frequency domain, the inverse Fourier transform of the frequency domain channel estimation result needs to be switched to the time domain.
  • the channel quality information and the precoding matrix number of the transmitting end are estimated according to the selected one or more time domain critical paths.
  • FIG. 8 is a schematic diagram (2) of channel state information acquisition according to an embodiment of the present invention. As shown in Figure 8, the following steps are included:
  • the corresponding channel quality information and the precoding matrix number of the transmitting end are estimated according to the selected strongest S time domain critical paths.
  • FIG. 9 is a schematic diagram of a correspondence relationship of channel state information according to an embodiment of the present invention.
  • grouping according to the receiver antenna weight number which is divided into x groups; then, within each group, there are n groups, each group containing the relative delay information of the time domain channel response or the frequency domain channel response. Frequency component, channel quality information, and sender precoding matrix sequence number.
  • the sequence number of the precoding matrix of the transmitting end includes one or more of the following information: a sequence number of the precoding matrix of the transmitting end in the pilot transmitting phase (such as the serial number of the training beam of the transmitting end); and a sequence number of the precoding matrix of the transmitting end of the data transmission phase (such as Transmitter transmission beam number);
  • FIG. 10 is a schematic diagram of time-frequency resource mapping of feedback information according to an embodiment of the present invention, in which it is assumed that there are 2 groups under each receiver antenna weight number.
  • the weight number of the antenna at the receiving end is differentiated by different time resources, and does not need to be explicitly reflected, thereby saving time-frequency resources.
  • the pilot transmitting end is generated by an identical transmitting precoding group, or is generated by different transmitting precoding groups, or is generated by several groups of transmitting precoding to generate multiple pilots and send to pilot receiving. end.
  • the pilot receiving end performs channel measurement under different one or more pilots with different receiving antenna weights, and feeds back corresponding channel state information.
  • FIG. 12a is a flowchart of a frequency domain transmission reference signal according to an embodiment of the present invention
  • FIG. 12b is a schematic diagram of a frequency domain transmission reference signal according to an embodiment of the present invention.
  • the transmit precoding weight corresponding to the transmit optional beam
  • the receive end has 5 controllable receive weights (corresponding to receiving the optional beam)
  • the transceiver supports 2*2 MIMO.
  • the transmitting end sends the training pilot, and the receiving end receives the training pilot, and the pilot is mapped to a specific time-frequency resource.
  • Each pilot corresponds to a specific sender precoding weight and receiver weight.
  • the receiving end can resolve the result of the frequency domain channel response under different weights through channel estimation, and different frequency components corresponding to different paths can be estimated by the resolution of the frequency domain channel response. Such as If the result of the frequency domain channel estimation is obtained by IFFT, the result of the time domain channel response can also be obtained, and the corresponding relative delay information is obtained.
  • the receiving end feeds back channel state information including frequency component information in the frequency domain channel response to the transmitting end, so as to distinguish different physical paths to support applications such as MIMO.
  • TX-4, RX-2) collectively point to an independent physical path 1
  • the channel quality is a1
  • (TX-6, RX-4) collectively point to an independent physical path 2
  • the channel quality is a2.
  • TX5 and RX3 can obtain gains in both paths and have a higher channel gain a3. That is, a3>a1, and a3>a2. If only the channel quality information is fed back, TX and RX can only find one effective beam combination (TX-6, RX-4), and the beam combination (TX-4, RX-2), (TX-6, RX-4) is considered. It is only a suboptimal adjacent beam, and the system only supports single stream communication.
  • the transceiver can point the two pairs of beams separately (TX-4, RX-2). And (TX-6, RX-4) to support the dual stream multiplexing gain of MIMO.
  • the pilot receiving end includes relative delay information in the feedback channel state information, which facilitates the pilot transmitting end to jointly distinguish the critical path from the time dimension and the spatial dimension.
  • the scheme can improve the probability of success of the pilot transmitting end for different physical paths; on the other hand, it is advantageous for the pilot transmitting end to configure the optimal transmitting precoding weight and the receiving antenna weight to achieve overall Effective improvement of the spectrum efficiency of wireless communication.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a feedback device for channel state information is provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again.
  • the term “module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 13 is a structural block diagram (1) of a feedback apparatus for channel state information according to an embodiment of the present invention, which may be applied to a receiving end.
  • the apparatus includes: a first receiving module 132, a measuring module 134, and a feedback module. 136, the device is described below:
  • the first receiving module 132 is configured to receive at least one pilot sent by the transmitting end according to the receiving antenna weight; the measuring module 134 is connected to the first receiving module 132, and configured to use the receiving end under the at least one pilot.
  • the antenna weight is used for channel measurement to obtain channel state information.
  • the feedback module 136 is coupled to the measurement module 134 and configured to feed back the channel state information to the transmitting end.
  • the at least one pilot may be generated in one of the following manners by using one of the following methods: each generated by a same pre-coding group; and generated by a plurality of pre-coding groups.
  • the foregoing channel state information may include one of the following: receiving The end antenna weight sequence number group, wherein the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number includes at least one time domain channel response relative delay information or a frequency in the frequency domain channel response. a receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one receiving end antenna weight number, and the receiving end antenna weight number includes at least one time domain channel response relative delay information or a frequency domain channel response.
  • a frequency component and at least one channel quality information a receiver antenna weight sequence number group, wherein the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number includes at least one time domain channel response The relative delay information or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one transmitter precoding matrix sequence number.
  • the relative delay information of the time domain channel response may be selected by selecting a baseband time domain channel response taper greater than or equal to the first threshold value under the receiving antenna weight. Relative delay; or, under the above-mentioned receiving antenna weight, under the number of taps of the second threshold, the relative delay of the strongest energy in the baseband time domain channel response tap is selected.
  • the frequency component in the frequency domain channel response is selected by the receiving antenna weight in the following manner: selecting a frequency component in a baseband frequency domain channel response that is greater than or equal to the first threshold; Alternatively, at the number of frequency components of the second threshold, the frequency component having the strongest energy in the baseband frequency domain channel response is selected.
  • the receiving antenna weight number may be represented by a packet sequence number.
  • the foregoing packet sequence number may be transmitted by: a time-frequency code resource carrying a feedback signal; or an explicit output sequence number value.
  • the sender precoding matrix sequence number may include at least one of: a transmitter precoding matrix sequence number in the pilot transmission phase; and a sender precoding matrix sequence number in the data transmission phase.
  • the serial number of the precoding matrix of the transmitting end may be through the following Transmission: a time-frequency code resource carrying a feedback signal; or, an explicit output sequence number value.
  • the precoding matrix corresponding to the sender precoding matrix sequence number may include one of the following: a radio frequency analog precoding matrix; a digital baseband precoding matrix; a radio frequency analog and a digital baseband hybrid precoding matrix.
  • the receiving antenna weight may include at least one of: a weight vector generated by the digital baseband and loaded on the receiving antenna unit; and an analog RF generated loading at the receiving antenna unit. Weight vector; a weight vector loaded by the digital baseband and the analog radio frequency coupled to the antenna unit at the receiving end.
  • the receiving antenna weight may include at least one of: constant amplitude and finite phase optional receiving antenna weight; finite amplitude optional and constant phase receiving antenna weight; amplitude and phase Receiver antenna weights without constraints.
  • FIG. 14 is a structural block diagram (2) of a feedback apparatus for channel state information according to an embodiment of the present invention.
  • the apparatus may be applied to a transmitting end.
  • the apparatus includes: a sending module 142 and a second receiving module 144.
  • the device is described below:
  • the sending module 142 is configured to send at least one pilot to the receiving end
  • the second receiving module 144 is connected to the sending module 142, and is configured to receive channel state information fed back by the receiving end, where the channel state information is the receiving end Under the at least one pilot, the channel state information is obtained by performing channel measurement using the receiver antenna weight.
  • FIG. 15 is a block diagram showing a preferred structure of a feedback device for channel state information according to an embodiment of the present invention.
  • the device may include all the modules shown in FIG. Includes one of the following:
  • the first generating module 152 is configured to send, by the sending end, the foregoing at least to the receiving end There is a one-to-one correspondence between the serial numbers of the precoding matrix of the transmitting end.
  • the receiving antenna weight may include at least one of: a weight vector generated by the digital baseband and loaded on the receiving antenna unit; and an analog RF generated loading at the receiving antenna unit. Weight vector; a weight vector loaded by the digital baseband and the analog radio frequency coupled to the antenna unit at the receiving end.
  • the receiving antenna weight may include at least one of: constant amplitude and finite phase optional receiving antenna weight; finite amplitude optional and constant phase receiving antenna weight; amplitude and phase Receiver antenna weights without constraints.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present invention also provide a storage medium.
  • the above storage medium may be configured to store program code for performing the above steps.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the processor performs the above steps according to the stored program code in the storage medium.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the at least one pilot is generated by the same transmitting precoding group at the transmitting end; the second generating module 154 is configured to: before the transmitting end sends the at least one pilot to the receiving end, The transmitting end generates the at least one pilot by using a plurality of transmitting precoding groups.
  • the channel state information may include one of the following: a receiver antenna weight sequence number group, where the receiver antenna weight sequence number group includes at least one receiver antenna weight sequence number, and the receiver antenna weight sequence number. a relative delay information including at least one time domain channel response or a frequency component in a frequency domain channel response; a receiver antenna weight sequence number group, wherein the receiving antenna weight sequence number group includes at least one receiving antenna weight number, and the receiving end The antenna weight number includes at least one time delay channel response relative frequency information or a frequency component in the frequency domain channel response and at least one channel quality information; the receiving end antenna weight sequence number group, wherein the receiving end antenna weight sequence number group includes at least one The receiver antenna weight sequence number includes the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response, the at least one channel quality information, and the at least one sender precoding matrix sequence number.
  • the receiving antenna weight number may be represented by a packet sequence number.
  • the sender precoding matrix sequence number may include at least one of: a transmitter precoding matrix sequence number in the pilot transmission phase; and a sender precoding matrix sequence number in the data transmission phase.
  • the precoding matrix corresponding to the sender precoding matrix sequence number may include one of the following: a radio frequency analog precoding matrix; a digital baseband precoding matrix; a radio frequency analog and a digital baseband hybrid precoding matrix.
  • the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response and the at least one channel quality information there is a one-to-one correspondence between the relative delay information of the at least one time domain channel response or the frequency component in the frequency domain channel response and the at least one channel quality information; and/or Relative delay information of at least one time domain channel response or frequency component in a frequency domain channel response, the at least one channel quality information, and at least one of the foregoing Blocks or steps are made in a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the method and apparatus for feeding back channel state information provided by the embodiments of the present invention have the following beneficial effects: the related method can solve the problem that the pilot transmitting end can only distinguish different physical paths from the airspace based on the current channel state information, and the cost is The problem of low success rate is reached, indicating that the pilot transmitting end jointly distinguishes the critical path from the time dimension and the spatial dimension, and on the one hand, can improve the probability of success of the pilot transmitting end for different physical paths; on the other hand, it is beneficial for pilot transmission.
  • the end joint receiving end configures the optimal transmitter precoding weight and the receiving end antenna weight to achieve an effective improvement of the overall wireless communication spectrum efficiency.

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

Abstract

Dans des modes de réalisation, la présente invention concerne un procédé et un dispositif pour renvoyer des informations d'état de canal. Le procédé comprend les étapes suivantes : une extrémité de réception reçoit, sur la base d'un poids d'antenne d'extrémité de réception, au moins un pilote transmis par une extrémité de transmission; l'extrémité de réception, sous le ou les pilotes, utilise le poids d'antenne d'extrémité de réception pour la mesure de canal de façon à acquérir des informations d'état de canal; et l'extrémité de réception renvoie les informations d'état de canal à l'extrémité de transmission. La présente invention résout le problème de l'état antérieur de la technique de grand surdébit et de faible taux de succès lorsqu'une extrémité de transmission de pilote peut uniquement distinguer différents trajets physiques d'un domaine spatial sur la base d'informations d'état de canal actuelles, ce qui permet d'obtenir une probabilité accrue que l'extrémité de transmission de pilote puisse distinguer avec succès les différents trajets physiques; l'extrémité de transmission de pilote et l'extrémité de réception sont utilisées conjointement pour configurer le poids de précodage d'extrémité de transmission optimal et le poids d'antenne de réception, ce qui a pour effet une efficacité spectrale de communication radio globale efficacement accrue.
PCT/CN2017/095392 2016-08-12 2017-08-01 Procédé et dispositif de renvoi d'informations d'état de canal WO2018028464A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019238083A1 (fr) * 2018-06-13 2019-12-19 Qualcomm Incorporated Informations d'état de canal (csi) explicites à compression de domaine spatial et temporel
CN115085782A (zh) * 2022-06-15 2022-09-20 南通大学 基于深度学习的智能反射面联合反馈和混合预编码方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113271130B (zh) 2018-05-11 2024-04-09 华为技术有限公司 信道估计方法和装置
CN111342913B (zh) * 2018-12-18 2021-06-01 华为技术有限公司 一种信道测量方法和通信装置
CN111342873B (zh) 2018-12-18 2021-11-30 华为技术有限公司 一种信道测量方法和通信装置
CN111342912B (zh) * 2018-12-18 2021-06-01 华为技术有限公司 一种信道测量方法和通信装置
CN112311431B (zh) * 2019-07-31 2021-10-26 华为技术有限公司 一种空频合并系数的指示方法及装置
CN113067787B (zh) * 2021-03-26 2023-02-28 广东奎晟信息科技有限公司 一种基于有限反馈的无线能量传输系统预编码方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577968A (zh) * 2008-05-05 2009-11-11 华为技术有限公司 一种获取下行信道信息的方法、系统和装置
CN104811231A (zh) * 2014-01-26 2015-07-29 电信科学技术研究院 一种支持fd-mimo的信道状态信息传输方法及装置
WO2016045535A1 (fr) * 2014-09-28 2016-03-31 电信科学技术研究院 Procédé, dispositif et système de renvoi d'informations d'état de canal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9072058B2 (en) * 2012-02-06 2015-06-30 Alcatel Lucent Method and apparatus for power optimization in wireless systems with large antenna arrays
US9647735B2 (en) * 2013-05-31 2017-05-09 Intel IP Corporation Hybrid digital and analog beamforming for large antenna arrays
CN104734754A (zh) * 2013-12-20 2015-06-24 中兴通讯股份有限公司 一种波束赋形权值训练方法及基站、终端
CN105322995B (zh) * 2014-07-30 2019-04-02 电信科学技术研究院 Mimo系统中的导频发送方法、信道测量方法及装置
CN105634680B (zh) * 2014-10-31 2019-02-12 电信科学技术研究院 一种信道状态信息的反馈、获取方法及装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101577968A (zh) * 2008-05-05 2009-11-11 华为技术有限公司 一种获取下行信道信息的方法、系统和装置
CN104811231A (zh) * 2014-01-26 2015-07-29 电信科学技术研究院 一种支持fd-mimo的信道状态信息传输方法及装置
WO2016045535A1 (fr) * 2014-09-28 2016-03-31 电信科学技术研究院 Procédé, dispositif et système de renvoi d'informations d'état de canal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI: "CSI feedback for beam space MIMO", 3GPP TSG RAN WG1 MEETING #85 R1-164090, 14 May 2016 (2016-05-14), XP051096595 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019238083A1 (fr) * 2018-06-13 2019-12-19 Qualcomm Incorporated Informations d'état de canal (csi) explicites à compression de domaine spatial et temporel
US11245454B2 (en) 2018-06-13 2022-02-08 Qualcomm Incorporated Explicit channel state information (CSI) with spatial and time domain compression
CN115085782A (zh) * 2022-06-15 2022-09-20 南通大学 基于深度学习的智能反射面联合反馈和混合预编码方法

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