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WO2018137228A1 - Dispositif et procédé de transmission à antennes multiples dans un équipement utilisateur et station de base - Google Patents

Dispositif et procédé de transmission à antennes multiples dans un équipement utilisateur et station de base Download PDF

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Publication number
WO2018137228A1
WO2018137228A1 PCT/CN2017/072714 CN2017072714W WO2018137228A1 WO 2018137228 A1 WO2018137228 A1 WO 2018137228A1 CN 2017072714 W CN2017072714 W CN 2017072714W WO 2018137228 A1 WO2018137228 A1 WO 2018137228A1
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domain
signaling
sub
time window
antenna ports
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PCT/CN2017/072714
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Chinese (zh)
Inventor
张晓博
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Nantong Langheng Communication Technology Co Ltd
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Nantong Langheng Communication Technology Co Ltd
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Priority to CN202210542834.XA priority Critical patent/CN114944852B/zh
Priority to PCT/CN2017/072714 priority patent/WO2018137228A1/fr
Priority to CN201780065831.9A priority patent/CN109964416B/zh
Priority to CN202210518654.8A priority patent/CN114944857A/zh
Publication of WO2018137228A1 publication Critical patent/WO2018137228A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • 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
    • 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
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals

Definitions

  • the present invention relates to a transmission method and apparatus in a wireless communication system, and more particularly to a transmission scheme and apparatus in a wireless communication system supporting multi-antenna transmission.
  • uplink multi-antenna transmission will support frequency selective precoding.
  • the base station in order to support frequency selective precoding, the base station needs to indicate the transmission precoding matrix used on each subband in the scheduling signaling, which greatly increases the DCI (Downlink Control Information, The overhead of the downlink control information). How to properly design the scheduling signaling to reduce the signaling overhead of frequency selective precoding is a problem that needs to be solved.
  • the transmission precoding matrix can be decomposed into the product of two matrices, the first matrix being non-frequency selective (the same on all subcarriers) And long-term slow change, can be updated in a longer period, using more bits to quantize; the second matrix is frequency selective (different sub-bands are different) and fast-changing, need to be shorter
  • the cycle is updated, but can be quantized with fewer bits.
  • the payload size of the DCI including the first matrix will be larger than the load size of the DCI that does not include the first matrix, which results in two different DCI load sizes. Different DCI load sizes may cause the UE (User Equipment) to require more blind detection times when monitoring DCI, which increases the complexity of blind detection, which is desirable in system design.
  • the present invention discloses a solution. It should be noted that although The initial motivation of the present invention is for uplink precoding, and the present invention is also applicable to downlink precoding. In the case of no collision, the features in the embodiments and embodiments in the UE of the present application can be applied to the base station, and vice versa. The features of the embodiments and the embodiments of the present application may be combined with each other arbitrarily without conflict.
  • the invention discloses a method used in a UE for multi-antenna transmission, which comprises the following steps:
  • Step A monitoring the first signaling in a first time window and monitoring the second signaling in a second time window
  • Step B Operating the first wireless signal.
  • the first time window and the second time window are orthogonal to each other in a time domain, the first signaling includes a first domain, and the second signaling includes a second domain.
  • the first field in the first signaling is used to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is used Forming the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is used to form The L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the operation is to receive, or the operation is to send.
  • the load size of the first signaling and the load size of the second signaling are different.
  • the load size is the number of all bits in the corresponding signaling.
  • all the bits include ⁇ Information Bit, CRC (Cyclic Redundancy Check) bit ⁇ .
  • all the bits include ⁇ information bits, CRC (Cyclic Redundancy Check) bits, parity bits ⁇ .
  • the all bits include ⁇ information bits, parity bits ⁇ .
  • all of the bits include Padding bits.
  • the payload size is the number of all information bits in the corresponding signaling.
  • the above method is advantageous in that the first domain and the second domain
  • Non-frequency selective, slowly varying portions and frequency selective, fast varying portions of the channels experienced by the first wireless signal may be respectively associated.
  • the non-frequency selective, slowly varying portion may be updated in a longer period, such that the first domain does not need to be present in the second signaling, thus reducing the load size of the second signaling ( The payload size), which reduces the overall signaling overhead.
  • the monitoring means that the UE performs BD (Blind Decoding) on the corresponding signaling according to the load size of the corresponding signaling.
  • another advantage of the above method is that the first signaling occurs only in the first time window, and the second signaling occurs only in the second time window, thus the The UE only needs to monitor the first signaling or the second signaling with a payload size at any one time, which reduces the processing complexity of the UE.
  • the number of bits in the first domain is greater than the number of bits in the second domain.
  • the number of bits in the first domain is less than the number of bits in the second domain.
  • the number of bits in the first domain is equal to the number of bits in the second domain.
  • the first signaling includes K domains outside the first domain and the second domain
  • the second signaling includes the K domains
  • the K is a positive integer
  • any one of the K domains includes a ⁇ Resource Distribution Domain, MCS (Modulation and Coding Scheme) domain, RV (Redundancy Version) domain, and NDI (New Data Indicator, The new data indicates one or more of the domain, HARQ (Hybrid Automatic Repeat reQuest) process number field, and transmit power control field ⁇ .
  • MCS Modulation and Coding Scheme
  • RV Redundancy Version
  • NDI New Data Indicator
  • the antenna port is formed by multiple virtual antennas through antenna virtualization, and mapping coefficients of the plurality of physical antennas to the antenna port form a beamforming vector.
  • the use of a given domain to form a given antenna port means that the given domain is used to generate a beamforming vector corresponding to the given antenna port.
  • the given domain is the first domain or the second domain.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, and the given domain is used to generate ⁇ the given And determining at least one of the analog beam shaping matrix corresponding to the antenna port, and the digital beam shaping vector corresponding to the given antenna port.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, and the first domain is used to generate the L cells.
  • the analog beam shaping matrix corresponding to the antenna port, the second domain is used to generate the digital beamforming vector corresponding to the L antenna ports.
  • the use of a given domain to form a given antenna port means that the given domain indicates a beamforming vector corresponding to the given antenna port.
  • the given domain is the first domain or the second domain.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, the given domain indicating ⁇ the given antenna port Corresponding at least one of the analog beam shaping matrix, the digital beam shaping vector corresponding to the given antenna port.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, the first domain indicating the L antenna ports corresponding to The analog beamforming matrix, the second domain indicating the digital beamforming vector corresponding to the L antenna ports.
  • a payload size of the first signaling is greater than a payload size of the second signaling.
  • a payload size of the first signaling is smaller than a payload size of the second signaling.
  • a payload size of the first signaling is equal to a payload size of the second signaling.
  • the first signaling and the second signaling are dynamic signaling, respectively.
  • the first signaling and the second signaling are respectively DCI (Downlink Control Information) for downlink grant, and the operation is reception.
  • DCI Downlink Control Information
  • the first signaling and the second signaling are respectively DCIs for Uplink Grant, and the operation is sending.
  • the first signaling carries scheduling information of the first wireless signal.
  • the second signaling carries scheduling information of the first wireless signal.
  • the scheduling information includes at least one of ⁇ occupied time domain resources, occupied frequency domain resources, MCS, HARQ process numbers, RV, NDI ⁇ .
  • the first signaling and the second signaling are respectively transmitted on a downlink physical layer control channel (ie, a downlink channel that can only be used to carry physical layer signaling).
  • a downlink physical layer control channel ie, a downlink channel that can only be used to carry physical layer signaling.
  • the downlink physical layer control channel is a PDCCH (Physical Downlink Control Channel).
  • the downlink physical layer control channel is an sPDCCH (short PDCCH).
  • the first wireless signal is transmitted on a physical layer data channel.
  • the physical layer data channel is a PDSCH (Physical Downlink Shared Channel), and the operation is reception.
  • PDSCH Physical Downlink Shared Channel
  • the physical layer data channel is sPDSCH (short PDSCH), and the operation is reception.
  • the physical layer data channel is a PUSCH (Physical Uplink Shared Channel), and the operation is transmission.
  • PUSCH Physical Uplink Shared Channel
  • the physical layer data channel is sPUSCH (short PUSCH), and the operation is transmission.
  • the first domain includes a first TPMI (Transmitted Precoding Matrix Indicator).
  • TPMI Transmitted Precoding Matrix Indicator
  • the first TPMI is a broadband TPMI, and the first TPMI is used to determine a pre-determination of the first wireless signal on all subcarriers occupied by the first wireless signal. Encoding matrix.
  • the second domain includes M second TPMIs, and the M is a positive integer.
  • the second TPMI is a sub-band TPMI, the frequency resource occupied by the first wireless signal is divided into multiple frequency regions, and the second TPMI is only Used to determine the first wireless signal on a portion of the frequency region Precoding matrix.
  • the K is equal to the M.
  • the K is not equal to the M.
  • the first TPMI includes a number of bits greater than the number of bits included in the second TPMI.
  • the first TPMI includes a number of bits equal to the number of bits included in the second TPMI.
  • the first TPMI includes a smaller number of bits than the second TPMI includes.
  • the first wireless signal is separately sent by the L antenna ports, the first wireless signal includes L sub-signals, and the L sub-signals are respectively sent by the L antenna ports. .
  • the monitoring refers to receiving based on blind detection, that is, receiving a signal and performing a decoding operation in a given time window, and determining that the reception is successful if it is determined that the decoding is correct according to the check bit, otherwise determining that the reception has failed.
  • the given time window is the first time window or the second time window.
  • the UE performs blind detection in the first time window by using a load size of the first signaling, where the UE is in the second time window.
  • the load size of the two signaling is blindly detected.
  • the above method has the advantage that the UE only needs to perform blind detection with a load size within a given time window, thereby avoiding the first signaling and the second signaling. Increased blind detection complexity due to different load sizes.
  • the first time window includes T1 time units
  • the second time window includes T2 time units
  • the T1 and the T2 are positive integers, respectively.
  • the time unit is a subframe.
  • the time unit is 1 ms.
  • the T1 time units are discontinuous in the time domain.
  • the T2 time units are discontinuous in the time domain.
  • the T1 is greater than the T2.
  • the T1 is equal to the T2.
  • the T1 is smaller than the T2.
  • the operation is to transmit, the first wireless signal includes L reference signals, and the L reference signals are respectively transmitted by the L antenna ports.
  • the first signaling indicates RS port information of the L reference signals.
  • the second signaling indicates RS port information of the L reference signals.
  • the RS port information includes ⁇ occupied time domain resources, occupied frequency domain resources, RS patterns, RS sequences, CS (Cyclic Shift, cyclic shift amount), At least one of OCC (Orthogonal Cover Code).
  • the L reference signals include DMRS (DeModulation Reference Signals).
  • the reference signal of any one of the L reference signals adopts a pattern of DMRS.
  • the step B further includes the following steps:
  • Step B0 Receive Q reference signals.
  • the operation is received, the first domain in the first signaling is used to form Q antenna ports, and the Q reference signals are respectively sent by the Q antenna ports.
  • the Q is a positive integer.
  • the first signaling indicates RS port information of the Q reference signals.
  • the second signaling indicates RS port information of the Q reference signals.
  • the Q reference signals comprise a DMRS.
  • the reference signal of any one of the Q reference signals adopts a pattern of DMRS.
  • the Q reference signals include a CSI-RS (Channel State) Information Reference Signals, channel status information reference signals).
  • CSI-RS Channel State Information Reference Signals
  • channel status information reference signals channel status information reference signals
  • the reference signal of any one of the Q reference signals adopts a pattern of CSI-RS.
  • the beamforming vector corresponding to any one of the antenna ports of any one of the L antenna ports and the antenna port of the Q antenna ports is different.
  • the first domain is used to generate the beamforming vector corresponding to the Q antenna ports.
  • the first domain indicates the beamforming vector corresponding to the Q antenna ports.
  • the measurement based on the Q reference signals and the second domain are used to determine channel parameters corresponding to the L antenna ports.
  • the channel parameter is a CIR (Channel Impulse Response).
  • the first domain is used to determine a first matrix, the first matrix being used to determine a precoding matrix of the first wireless signal.
  • the second domain is used to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the M in the P frequency regions The frequency regions correspond one-to-one.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the second matrix is used to determine a precoding matrix of the first wireless signal on the corresponding frequency region.
  • the P is equal to the M.
  • the P is greater than the M.
  • the first signaling is used to determine the M frequency regions from the P frequency regions.
  • the first signaling indicates an index of each of the M frequency regions in the P frequency regions.
  • the second signaling is used to determine the M frequency regions from the P frequency regions.
  • the second signaling indicates each of the M frequency regions An index of the frequency region in the P frequency regions.
  • the frequency region comprises a positive integer number of consecutive subcarriers.
  • the number of subcarriers included in any two of the frequency regions is the same.
  • the P frequency regions are orthogonal to each other in the frequency domain, that is, there is no one subcarrier and belong to two different frequency regions.
  • the precoding matrix of the first wireless signal is the same on different subcarriers of the same frequency region.
  • the precoding matrix of the first wireless signal is different on different frequency regions.
  • the precoding matrix of the first wireless signal on any one of the M frequency regions is obtained by multiplying the first matrix and the corresponding second matrix. .
  • the L antenna ports are divided into P antenna port groups, the antenna port group includes R the antenna ports, and the number of columns of the second matrix is equal to the R, the P times Let R be equal to the L.
  • the P antenna port groups and the P frequency regions are in one-to-one correspondence, and the wireless signals transmitted by any one of the antenna port groups do not occupy frequency resources other than the corresponding frequency regions.
  • the first wireless signal is sent by the corresponding antenna port group on the frequency region.
  • the M antenna port groups of the P antenna port groups and the M second matrices are in one-to-one correspondence, and the first matrix and the second matrix phase Multiplying a reference matrix, the R columns in the reference matrix are respectively the beamforming vectors of the R antenna ports included in the corresponding antenna port group.
  • the beamforming vector is generated by the product of an analog beamforming matrix and a digital beamforming vector.
  • the analog beam shaping matrices corresponding to the L antenna ports are the same.
  • the mode corresponding to the L antenna ports The quasi-beamforming matrix is the first matrix, respectively.
  • the antenna ports in different antenna port groups correspond to different digital beamforming vectors.
  • the columns in the second matrix constitute the digital beamforming vector of the antenna port in the corresponding antenna port group.
  • the number of columns of the first matrix is equal to the Q, and the columns of the first matrix are respectively the beamforming vectors corresponding to the Q antenna ports.
  • the Q is greater than or equal to the L divided by the P.
  • the first matrix is a matrix in a first candidate matrix set
  • the first domain includes an index of the first matrix in the first candidate matrix set
  • the first candidate matrix The set includes a positive integer matrix.
  • an index of the first matrix in the first candidate matrix set is the first TPMI.
  • the second matrix is one of a second candidate matrix set
  • the second domain includes each of the M second matrices, the second matrix is in the second candidate matrix An index in the set, the second candidate matrix set comprising a positive integer number of matrices.
  • an index of each of the M second matrices in the second candidate matrix set is a second TPMI.
  • the first candidate matrix set includes a number of matrices greater than a number of matrices included in the second candidate matrix set.
  • the first candidate matrix set includes a number of matrices equal to the number of matrices included in the second candidate matrix set.
  • the first candidate matrix set includes a number of matrices smaller than the number of matrices included in the second candidate matrix set.
  • the measurement based on the Q reference signals and the M second matrices are used to determine channel parameters corresponding to the M antenna port groups.
  • the channel parameters corresponding to the M antenna port groups constitute M target channel matrices
  • the measurement based on the Q reference signals is used to determine a reference channel matrix, the reference channel matrix Multiplying the M second matrices respectively to obtain the M target channel matrices.
  • the second domain is indicated by the first signaling.
  • the second domain is indicated by the second signaling.
  • the step A further includes the following steps:
  • Step A0 Receive downlink information.
  • the downlink information is used to determine at least the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window.
  • the downlink information is carried by higher layer signaling.
  • the downlink information is carried by RRC (Radio Resource Control) signaling.
  • RRC Radio Resource Control
  • the downlink information is semi-statically configured.
  • the downlink information is common to the cell.
  • the downlink information is UE-specific.
  • the method further includes the following steps:
  • the measurement based on the second reference signal is used to determine at least one of ⁇ the first domain, the second domain ⁇ .
  • the second reference signal includes SRS (Sounding Reference Signals), and the operation is transmission.
  • SRS Sounding Reference Signals
  • the second reference signal comprises a CSI-RS, and the operation is reception.
  • the second reference signal comprises a DMRS.
  • the operation is receiving; or the operation is a transmission.
  • the measurement based on the second reference signal is used to determine P1 first channel matrices, the P1 first channel matrices being used to determine ⁇ the first domain, the second domain ⁇ At least one of the P1 is a positive integer.
  • the frequency domain resource occupied by the second reference signal is divided into P1 frequency regions, the second reference signal is separately sent by a positive integer number of antenna ports, and the measurement based on the second reference signal is used. Determining channel parameters corresponding to the positive integer number of antenna ports on the P1 frequency regions, where the channel parameters corresponding to the P1 frequency regions of the positive integer number of antenna ports respectively constitute the P1 The first channel matrix.
  • the P1 first channel matrices are used to generate the first moment
  • the first matrix is one of the first candidate matrix sets, and the first domain includes an index of the first matrix in the first candidate matrix set.
  • an average of the P1 first channel matrices is used to generate the first matrix.
  • the M1 first channel matrices in the P1 first channel matrices are respectively used to generate M1 second matrices, and the M1 second matrices are the M second matrices.
  • the second matrix is one of the second candidate matrix sets, and the second domain includes each of the M second matrices, the second matrix is in the second candidate matrix set index.
  • the P1 is greater than the P.
  • the P1 is equal to the P.
  • the P1 is smaller than the P.
  • the rank of the first channel matrix is greater than or equal to the L divided by the P.
  • the rank of the first channel matrix is greater than or equal to the Q.
  • the method further includes the following steps:
  • Step D Send uplink information.
  • the uplink information is used to determine at least one of ⁇ the first domain, the second domain ⁇ , and the operation is to receive.
  • the uplink information indicates at least one of ⁇ the first domain, the second domain ⁇ .
  • the uplink information indicates an index of the first matrix in the first candidate matrix set, and each of the M3 second matrices is in the second candidate. At least one of the indexes ⁇ in the matrix set.
  • the M3 second matrices are a subset of the M second matrices, and the M3 is a positive integer less than or equal to the M.
  • the measurement based on the second reference signal is used to determine the P1 first channel matrices, and the P1 first channel matrices are used to generate the uplink information.
  • the uplink information includes quantization information of P2 first channel matrices, the P2 first channel matrices are a subset of the P1 first channel matrices, and the P2 is less than or equal to the A positive integer of P1.
  • the uplink information includes each of P2 first quantization matrices.
  • An index of the first quantization matrix in a third candidate matrix set wherein the P2 first quantization matrices are respectively quantized by the P2 first channel matrices, wherein the first quantization matrix is the third candidate A matrix in a set of matrices, the set of third candidate matrices comprising a matrix of positive integers.
  • the P2 first quantization matrices are used to generate at least one of ⁇ the first domain, the second domain ⁇ .
  • the P2 first quantization matrices are used to generate the first matrix
  • the first matrix is a matrix in the first candidate matrix set
  • the first domain includes the first An index of a matrix in the first set of candidate matrices.
  • an average of the P2 first quantization matrices is used to generate the first matrix.
  • the M2 first quantization matrices in the P2 first quantization matrices are respectively used to generate M2 second matrices, and the M2 second matrices are the M second matrices.
  • the second matrix is one of the second candidate matrix sets, and the second domain includes each of the M second matrices, the second matrix is in the second candidate matrix set index.
  • the uplink information includes S index groups and S parameter groups, and the S index groups are used to determine S vector groups, the S vector groups and the S parameter groups.
  • the S vector groups and the S parameter groups are respectively used to generate S synthesis vectors, and the S synthesis vectors are used to determine the P2 first quantization matrices.
  • the S is a positive integer greater than or equal to the P2.
  • the vectors in the S vector groups belong to a candidate vector set, and the candidate vector set includes a positive integer vector.
  • a given composite vector is obtained by weighting the vectors in a given set of vectors by a parameter in a given set of parameters, wherein the given composite vector is the S composite vectors.
  • the given composite vector is the S composite vectors.
  • any one of the S vector groups used to generate the given composite vector, the given parameter group being the S parameter group being the S parameter group The set of parameters used to generate the given composite vector.
  • the S composite vectors are divided into P2 composite vector groups, each of the composite vector groups includes a positive integer number of the composite vectors, the P2 synthetic vector groups and the P2 first quantization matrices are in one-to-one correspondence, the first quantization matrix
  • the composite vector in the corresponding set of composite vectors is constructed as a column vector.
  • one vector group includes S1 vectors, and the corresponding coefficient group includes S1-1 coefficients.
  • one vector group includes S1 vectors
  • the corresponding coefficient group includes S1 coefficients
  • the uplink information includes UCI (Uplink Control Information).
  • UCI Uplink Control Information
  • the uplink information is transmitted on an uplink physical layer control channel (ie, an uplink channel that can only be used to carry physical layer signaling).
  • an uplink physical layer control channel ie, an uplink channel that can only be used to carry physical layer signaling.
  • the uplink physical layer control channel is a PUCCH (Physical Uplink Control Channel).
  • the uplink information is transmitted on an uplink physical layer data channel (ie, an uplink channel that can be used to carry physical layer data).
  • an uplink physical layer data channel ie, an uplink channel that can be used to carry physical layer data.
  • the uplink physical layer data channel is a PUSCH (Physical Uplink Shared Channel).
  • PUSCH Physical Uplink Shared Channel
  • the invention discloses a method used in a base station for multi-antenna transmission, which comprises the following steps:
  • Step A transmitting the first signaling in the first time window and transmitting the second signaling in the second time window;
  • Step B Execute the first wireless signal.
  • the first time window and the second time window are orthogonal to each other in a time domain, the first signaling includes a first domain, and the second signaling includes a second domain.
  • the first field in the first signaling is used to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is used Forming the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is used to form The L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the execution is a transmission, or the execution is a reception.
  • a payload size of the first signaling is greater than a payload size of the second signaling.
  • the first signaling and the second signaling are dynamic signaling, respectively.
  • the first signaling and the second signaling are respectively DCIs for Downlink Grant, and the execution is sending.
  • the first signaling and the second signaling are respectively DCIs for Uplink Grant, and the execution is reception.
  • the first wireless signal is transmitted on a physical layer data channel.
  • the physical layer data channel is a PDSCH (Physical Downlink Shared Channel), and the execution is a transmission.
  • PDSCH Physical Downlink Shared Channel
  • the physical layer data channel is sPDSCH (short PDSCH), and the execution is transmission.
  • the physical layer data channel is a PUSCH (Physical Uplink Shared Channel), and the performing is receiving.
  • PUSCH Physical Uplink Shared Channel
  • the physical layer data channel is sPUSCH (short PUSCH), and the execution is reception.
  • the performing is receiving, the first wireless signal includes L reference signals, and the L reference signals are respectively sent by the L antenna ports.
  • the step B further includes the following steps:
  • Step B0 Send Q reference signals.
  • the performing is a sending, the first domain in the first signaling is used to form Q antenna ports, and the Q reference signals are respectively sent by the Q antenna ports.
  • the Q is a positive integer.
  • the first domain is used to determine a first matrix, the first matrix being used to determine a precoding matrix of the first wireless signal.
  • the second domain is used to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the M in the P frequency regions The frequency regions correspond one-to-one.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the second matrix is used to determine that the first wireless signal is in the pair The precoding matrix on the frequency region that should be.
  • the step A further includes the following steps:
  • Step A0 Send downlink information.
  • the downlink information is used to determine at least the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window.
  • the method further includes the following steps:
  • Step C Perform a second reference signal.
  • the measurement based on the second reference signal is used to determine at least one of ⁇ the first domain, the second domain ⁇ .
  • the second reference signal comprises an SRS and the execution is reception.
  • the second reference signal comprises a CSI-RS, and the performing is a transmission.
  • the second reference signal comprises a DMRS.
  • the execution is a reception; or the execution is a transmission.
  • the method further includes the following steps:
  • the uplink information is used to determine at least one of ⁇ the first domain, the second domain ⁇ , and the performing is sending.
  • the invention discloses a user equipment used for multi-antenna transmission, which comprises the following modules:
  • a first receiving module configured to: monitor the first signaling in the first time window, and monitor the second signaling in the second time window;
  • the first processing module is configured to operate the first wireless signal.
  • the first time window and the second time window are orthogonal to each other in a time domain, the first signaling includes a first domain, and the second signaling includes a second domain.
  • the first field in the first signaling is used to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is used Forming the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is used to form The L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the operation is to receive, or the operation is to send.
  • the foregoing user equipment for multi-antenna transmission is characterized in that the operation is transmission, the first wireless signal includes L reference signals, and the L reference signals are respectively used by the L antenna ports. send.
  • the foregoing user equipment for multi-antenna transmission is characterized in that the first processing module is further configured to receive Q reference signals. The operation is received, the first domain in the first signaling is used to form Q antenna ports, and the Q reference signals are respectively sent by the Q antenna ports.
  • the Q is a positive integer.
  • the user equipment for multi-antenna transmission described above is characterized in that the first domain is used to determine a first matrix, and the first matrix is used to determine a precoding matrix of the first wireless signal. .
  • the second domain is used to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the M in the P frequency regions The frequency regions correspond one-to-one.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the foregoing user equipment for multi-antenna transmission is characterized in that the first receiving module is further configured to receive downlink information.
  • the downlink information is used to determine at least the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window.
  • the foregoing user equipment for multi-antenna transmission is characterized in that it further includes the following modules:
  • the second processing module is configured to operate the second reference signal.
  • the measurement based on the second reference signal is used to determine at least one of ⁇ the first domain, the second domain ⁇ .
  • the foregoing user equipment for multi-antenna transmission is characterized in that it further includes the following modules:
  • the first sending module is configured to send uplink information.
  • the uplink information is used to determine at least one of ⁇ the first domain, the second domain ⁇ , and the operation is to receive.
  • the invention discloses a base station device used for multi-antenna transmission, which comprises the following modules:
  • a second sending module configured to send the first signaling in the first time window, in the second time Sending second signaling in the window
  • the third processing module is configured to execute the first wireless signal.
  • the first time window and the second time window are orthogonal to each other in a time domain, the first signaling includes a first domain, and the second signaling includes a second domain.
  • the first field in the first signaling is used to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is used Forming the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is used to form The L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the execution is a transmission, or the execution is a reception.
  • the foregoing base station apparatus for multi-antenna transmission is characterized in that the performing is reception, the first wireless signal includes L reference signals, and the L reference signals are respectively used by the L antenna ports send.
  • the foregoing base station device for multi-antenna transmission is characterized in that the third processing module is further configured to send Q reference signals.
  • the performing is a sending, the first domain in the first signaling is used to form Q antenna ports, and the Q reference signals are respectively sent by the Q antenna ports.
  • the Q is a positive integer.
  • the above base station apparatus for multi-antenna transmission is characterized in that the first domain is used to determine a first matrix, and the first matrix is used to determine a precoding matrix of the first wireless signal .
  • the second domain is used to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the M in the P frequency regions The frequency regions correspond one-to-one.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the foregoing base station device for multi-antenna transmission is characterized in that the second sending module is further configured to send downlink information.
  • the downlink information is used to determine at least the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window.
  • the foregoing base station device for multi-antenna transmission is characterized in that it further includes the following modules:
  • the fourth processing module is configured to execute the second reference signal.
  • the measurement based on the second reference signal is used to determine ⁇ the first domain, At least one of the second domains ⁇ .
  • the foregoing base station device for multi-antenna transmission is characterized in that it further includes the following modules:
  • the second receiving module is configured to receive uplink information.
  • the uplink information is used to determine at least one of ⁇ the first domain, the second domain ⁇ , and the performing is sending.
  • the present invention has the following advantages over the conventional solution:
  • FIG. 1 shows a flow chart of wireless transmission in accordance with one embodiment of the present invention
  • FIG. 2 shows a flow chart of wireless transmission in accordance with another embodiment of the present invention.
  • FIG. 3 shows a schematic diagram of resource mapping of a first time window and a second time window in a time domain, in accordance with an embodiment of the present invention
  • Figure 4 shows a schematic diagram of first signaling in accordance with one embodiment of the present invention
  • FIG. 5 shows a schematic diagram of first signaling according to another embodiment of the present invention.
  • Figure 6 shows a schematic diagram of second signaling in accordance with one embodiment of the present invention.
  • Figure 7 is a diagram showing the relationship between ⁇ first matrix, M second matrices ⁇ and a precoding matrix of a first radio signal, in accordance with one embodiment of the present invention.
  • FIG. 8 is a diagram showing resource mapping of L reference signals in a time-frequency domain according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing resource mapping of Q reference signals in a time-frequency domain according to an embodiment of the present invention.
  • FIG. 10 is a block diagram showing the structure of a processing device for use in a UE according to an embodiment of the present invention.
  • FIG. 11 is a block diagram showing the structure of a processing device for use in a base station in accordance with one embodiment of the present invention.
  • Embodiment 1 illustrates a flow chart of wireless transmission, as shown in FIG.
  • base station N1 is a serving cell maintenance base station of UE U2.
  • the steps in block F1 and block F2 are optional, respectively.
  • step S101 downlink information is transmitted in step S101; second reference signal is received in step S102; first signaling is transmitted in a first time window in step S11, and second signaling is transmitted in a second time window; The first wireless signal is received in step S12.
  • step S201 For U2, receiving downlink information in step S201; transmitting a second reference signal in step S202; monitoring first signaling in a first time window in step S21, monitoring second signaling in a second time window; The first wireless signal is transmitted in step S22.
  • the first time window and the second time window are orthogonal to each other in a time domain
  • the first signaling includes a first domain
  • the second signaling includes a second domain.
  • the first field in the first signaling is used by the U2 to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is U2 is used to form the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is
  • the U2 is used to form the L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the first wireless signal includes L reference signals, and the L reference signals are respectively transmitted by the L antenna ports.
  • the downlink information is used by the U2 to determine at least ⁇ the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window ⁇ one.
  • the measurement based on the second reference signal is used by the N1 to determine at least one of ⁇ the first domain, the second domain ⁇ .
  • the first domain is used by the U2 to determine the first moment
  • the first matrix is used by the U2 to determine a precoding matrix of the first wireless signal.
  • the second domain is used by the U2 to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the P frequency regions.
  • the M frequency regions in the one-to-one correspondence.
  • the M is a positive integer
  • the P is a positive integer greater than or equal to the M
  • the second matrix is used by the U2 to determine a precoding matrix of the first wireless signal on the corresponding frequency region.
  • the P is equal to the M.
  • the P is greater than the M.
  • the first signaling indicates an index of each of the M frequency regions in the P frequency regions.
  • the second signaling indicates an index of each of the M frequency regions in the P frequency regions.
  • the precoding matrix of the first radio signal is the same on different subcarriers of the same frequency region.
  • the precoding matrix of the first wireless signal is different on different frequency regions.
  • the precoding matrix of the first wireless signal on any one of the M frequency regions is represented by the first matrix and corresponding The product of the second matrix is obtained.
  • the L antenna ports are divided into P antenna port groups, the antenna port group includes R the antenna ports, and the columns of the second matrix The number is equal to the R, and the P is multiplied by the R equal to the L.
  • the P antenna port groups and the P frequency regions are in one-to-one correspondence, and the wireless signals transmitted by any one of the antenna port groups do not occupy frequency resources other than the corresponding frequency regions.
  • the antenna port is formed by multiple virtual antennas through antenna virtualization, and mapping coefficients of the plurality of physical antennas to the antenna port are formed. Beamforming vector.
  • the M antenna port groups of the P antenna port groups are in one-to-one correspondence with the M second matrices, and the first matrix and the second matrix are multiplied to obtain a reference matrix, where the reference matrix is
  • the R columns are respectively the beamforming vectors of the R antenna ports included in the corresponding antenna port group.
  • the first matrix is a matrix in a first candidate matrix set
  • the first domain includes the first matrix in the first candidate matrix set
  • the first candidate matrix set includes a positive integer number of matrices.
  • the second matrix is one of a second candidate matrix set
  • the second domain includes each of the M second matrices An index of the second matrix in the second candidate matrix set, the second candidate matrix set comprising a positive integer number of matrices.
  • the number of bits in the first domain is greater than the number of bits in the second domain.
  • the number of bits in the first domain is smaller than the number of bits in the second domain.
  • the number of bits in the first domain is equal to the number of bits in the second domain.
  • the first signaling includes K domains other than the first domain and the second domain, and the second signaling includes the K domains, K is a positive integer.
  • any one of the K domains includes one or more of a ⁇ resource allocation domain, an MCS domain, an RV domain, an NDI domain, a HARQ process number domain, and a transmission power control domain ⁇ .
  • the antenna port is formed by a plurality of physical antennas through antenna virtualization, and mapping coefficients of the plurality of physical antennas to the antenna port constitute a beamforming vector.
  • the use of a given domain to form a given antenna port means that the given domain is used to generate a beamforming vector corresponding to the given antenna port.
  • the given domain is the first domain or the second domain.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, the given domain being used Generating at least one of the analog beam shaping matrix corresponding to the given antenna port, the digital beam shaping vector corresponding to the given antenna port.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, the first domain being used Generating the analog beam shaping matrix corresponding to the L antenna ports, The second domain is used to generate the digital beamforming vector corresponding to the L antenna ports.
  • the use of a given domain to form a given antenna port means that the given domain indicates a beamforming vector corresponding to the given antenna port.
  • the given domain is the first domain or the second domain.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, the given domain indicating ⁇ Said analog beam shaping matrix corresponding to a given antenna port, at least one of said digital beam shaping vectors ⁇ corresponding to said given antenna port.
  • the beamforming vector is generated by a product of an analog beamforming matrix and a digital beamforming vector, the first domain indicating the The analog beam shaping matrix corresponding to the L antenna ports, the second domain indicating the digital beamforming vector corresponding to the L antenna ports.
  • the first signaling and the second signaling are dynamic signaling, respectively.
  • the first signaling and the second signaling are respectively DCIs for Uplink Grant.
  • the first signaling carries scheduling information of the first wireless signal.
  • the second signaling carries scheduling information of the first wireless signal.
  • the scheduling information includes at least one of ⁇ occupied time domain resources, occupied frequency domain resources, MCS, HARQ process numbers, RV, NDI ⁇ .
  • the first signaling and the second signaling are respectively transmitted on a downlink physical layer control channel (ie, a downlink channel that can only be used to carry physical layer signaling).
  • a downlink physical layer control channel ie, a downlink channel that can only be used to carry physical layer signaling.
  • the downlink physical layer control channel is a PDCCH.
  • the downlink physical layer control channel is an sPDCCH.
  • the first wireless signal is transmitted on a physical layer data channel.
  • the physical layer data channel is a PUSCH.
  • the physical layer data channel is sPUSCH.
  • the first domain includes a first TPMI.
  • the first TPMI is a broadband TPMI
  • the first TPMI is used by the U2 to determine on all subcarriers occupied by the first wireless signal.
  • a precoding matrix of the first wireless signal is a precoding matrix of the first wireless signal.
  • the second domain includes M second TPMIs, and the M is a positive integer.
  • the second TPMI is a sub-band TPMI, and the frequency resource occupied by the first wireless signal is divided into multiple frequency regions.
  • the second TPMI is used by the U2 to determine a precoding matrix of the first wireless signal only on a portion of the frequency region.
  • the K is equal to the M.
  • the K is not equal to the M.
  • the first wireless signal is separately sent by the L antenna ports, the first wireless signal includes L sub-signals, and the L sub-signals are respectively L antenna ports are sent.
  • the payload size of the first signaling is greater than the payload size of the second signaling.
  • the payload size of the first signaling is smaller than the payload size of the second signaling.
  • the payload size of the first signaling is equal to the payload size of the second signaling.
  • the monitoring refers to reception based on blind detection, that is, receiving a signal and performing a decoding operation in a given time window, and determining that the reception is successful if it is determined that the decoding is correct according to the check bit, Otherwise, the reception fails.
  • the given time window is the first time window or the second time window.
  • the UE performs blind detection in the first time window with a load size of the first signaling, and the UE is in the second Blind detection is performed in the time window with the load size of the second signaling.
  • the first signaling indicates RS port information of the L reference signals.
  • the second signaling indicates RS port information of the L reference signals.
  • the RS port information includes ⁇ occupied time domain resources, occupied frequency domain resources, RS pattern, RS sequence, CS (Cyclic Shift, At least one of cyclic shift amount), OCC (Orthogonal Cover Code).
  • the L reference signals include a DMRS.
  • the downlink information is carried by higher layer signaling.
  • the downlink information is carried by RRC signaling.
  • the downlink information is semi-statically configured.
  • the downlink information is common to the cell.
  • the downlink information is UE-specific.
  • the second reference signal comprises an SRS.
  • the second reference signal includes a DMRS.
  • the measurement based on the second reference signal is used by the N1 to determine P1 first channel matrices, and the P1 first channel matrices are used by the N1 to determine ⁇ At least one of the first domain, the second domain, wherein the P1 is a positive integer.
  • the rank of the first channel matrix is greater than or equal to the L divided by the P.
  • the P1 is greater than the P.
  • said P1 is equal to said P.
  • said P1 is smaller than said P.
  • the frequency domain resource occupied by the second reference signal is divided into P1 frequency regions, and the second reference signal is separately transmitted by a positive integer number of antenna ports, based on the second reference signal.
  • the measurement is used by the N1 to determine a channel parameter corresponding to the positive integer number of antenna ports on the P1 frequency regions, the positive integer antenna
  • the channel parameters corresponding to the ports on the P1 frequency regions respectively constitute the P1 first channel matrices.
  • the block F1 in Fig. 1 exists, and the block F2 does not exist.
  • block F1 in Fig. 1 does not exist and block F2 exists.
  • Embodiment 2 illustrates a flow chart of wireless transmission, as shown in FIG.
  • the base station N3 is a serving cell maintenance base station of the UE U4.
  • the steps in block F3, block F4 and block F5 are optional, respectively.
  • the downlink information is transmitted in step S301; the second reference signal is transmitted in step S302; the uplink information is received in step S303; the first signaling is transmitted in the first time window in step S31, in the second time window Transmitting the second signaling; transmitting Q reference signals in step S32; transmitting the first wireless signal in step S33.
  • the downlink information is received in step S401; the second reference signal is received in step S402; the uplink information is transmitted in step S403; the first signaling is monitored in the first time window in step S41, in the second time window Monitoring the second signaling; receiving Q reference signals in step S42; receiving the first wireless signal in step S43.
  • the first time window and the second time window are orthogonal to each other in a time domain
  • the first signaling includes a first domain
  • the second signaling includes a second domain.
  • the first field in the first signaling is used by the N3 to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is N3 is used to form the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is The N3 is used to form the L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the first field in the first signaling is used by the N3 to form Q antenna ports, and the Q reference signals are respectively Transmitted by the Q antenna ports.
  • the Q is a positive integer.
  • the downlink information is used by the U4 to determine at least ⁇ the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window ⁇ one.
  • the measurement based on the second reference signal is used by the U4 to determine the uplink information, and the uplink information is used by the N3 to determine at least one of ⁇ the first domain, the second domain ⁇ .
  • the first domain is used by the N3 to determine a first matrix
  • the first matrix is used by the N3 to determine a precoding matrix of the first wireless signal.
  • the second domain is used by the N3 and the U4 to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the The M frequency regions in the P frequency regions are in one-to-one correspondence.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the second matrix is used by the N3 and the U4 to determine a precoding matrix of the first wireless signal on the corresponding frequency region.
  • the antenna port is formed by multiple virtual antennas through antenna virtualization, and mapping coefficients of the plurality of physical antennas to the antenna port are formed. Beamforming vector.
  • the number of columns of the first matrix is equal to the Q, and the columns of the first matrix are respectively the beamforming vectors corresponding to the Q antenna ports.
  • the Q is greater than or equal to the L divided by the P.
  • the first signaling and the second signaling are respectively DCIs for Downlink Grant.
  • the first wireless signal is transmitted on a physical layer data channel.
  • the physical layer data channel is a PDSCH.
  • the physical layer data channel is sPDSCH.
  • the first signaling indicates RS port information of the Q reference signals.
  • the second signaling indicates RS port information of the Q reference signals.
  • the RS port information includes ⁇ occupied time domain resources, occupied frequency domain resources, RS pattern, RS sequence, CS (Cyclic Shift, At least one of cyclic shift amount), OCC (Orthogonal Cover Code).
  • the Q reference signals include a DMRS.
  • the Q reference signals include a CSI-RS.
  • the first domain is used by the N3 to generate the beamforming vector corresponding to the Q antenna ports.
  • the first domain indicates the beamforming vector corresponding to the Q antenna ports.
  • the U4 is used to determine channel parameters corresponding to the L antenna ports.
  • the channel parameter is CIR.
  • the second reference signal includes a CSI-RS.
  • the second reference signal comprises a DMRS.
  • the measurement based on the second reference signal is used by the U4 to determine P1 first channel matrices, the P1 being a positive integer.
  • the frequency domain resource occupied by the second reference signal is divided into P1 frequency regions, and the second reference signal is separately sent by a positive integer number of antenna ports, based on The measurement of the second reference signal is used by the U4 to determine a channel parameter corresponding to the positive integer number of antenna ports on the P1 frequency regions, where the positive integer number of antenna ports are at the P1 frequencies
  • the channel parameters corresponding to the regions respectively constitute the P1 first channel matrices.
  • the rank of the first channel matrix is greater than or equal to the Q.
  • the uplink information indicates at least one of ⁇ the first domain, the second domain ⁇ .
  • the P1 first channel matrices are used by the U4 to generate the uplink information.
  • the uplink information includes quantization information of P2 first channel matrices, and the P2 first channel matrices are a subset of the P1 first channel matrices, and the P2 is A positive integer less than or equal to the P1.
  • the P2 first quantization matrices are used by the N3 to generate at least one of ⁇ the first domain, the second domain ⁇ .
  • the uplink information includes UCI.
  • the uplink information is transmitted on an uplink physical layer control channel (ie, an uplink channel that can only be used to carry physical layer signaling).
  • an uplink physical layer control channel ie, an uplink channel that can only be used to carry physical layer signaling.
  • the uplink physical layer control channel is a PUCCH.
  • the uplink information is transmitted on an uplink physical layer data channel (i.e., an uplink channel that can be used to carry physical layer data).
  • an uplink physical layer data channel i.e., an uplink channel that can be used to carry physical layer data.
  • the uplink physical layer data channel is a PUSCH.
  • block F3, block F4 and block F5 in Fig. 2 are present.
  • block F3 and block F4 in Fig. 2 exist, and block F5 does not exist.
  • block F3 in Fig. 2 exists, and block F4 and block F5 do not exist.
  • block F3 and block F5 in Fig. 2 exist, and block F4 does not exist.
  • block F3 in Fig. 2 does not exist, and block F4 and block F5 exist.
  • block F3 and block F4 in Fig. 2 do not exist, and block F5 exists.
  • block F3 and block F5 in Fig. 2 do not exist, and block F4 exists.
  • block F3, block F4 and block F5 in Fig. 2 are not present.
  • Embodiment 3 illustrates a schematic diagram of resource mapping of the first time window and the second time window in the time domain, as shown in FIG.
  • the first time window and the second time window are orthogonal to each other in a time domain, and the UE monitors the first signaling in the first time window, in the second time window.
  • the second signaling is monitored.
  • the first signaling includes a first domain and a second domain, or the first signaling includes the first domain.
  • the second signaling includes the second domain.
  • the first time window includes T1 time units
  • the second time window includes T2 time units
  • the T1 and the T2 are positive integers, respectively.
  • the time unit is a subframe.
  • the time unit is 1 ms.
  • the T1 time units are discontinuous in the time domain.
  • the T2 time units are discontinuous in the time domain.
  • the T1 is greater than the T2.
  • the T1 is equal to the T2.
  • the T1 is smaller than the T2.
  • a payload size of the first signaling is greater than a payload size of the second signaling.
  • a payload size of the first signaling is smaller than a payload size of the second signaling.
  • a payload size of the first signaling is equal to a payload size of the second signaling.
  • the monitoring refers to reception based on blind detection, that is, receiving a signal in a given time window and performing a decoding operation, and if it is determined that the decoding is correct according to the check bit, it is determined that the reception is successful, Otherwise, the reception fails.
  • the given time window is the first time window or the second time window.
  • the UE performs blind detection in the first time window with a load size of the first signaling, and the UE is in the second time window.
  • the blind detection is performed with the load size of the second signaling.
  • Embodiment 4 illustrates a schematic diagram of the first signaling, as shown in FIG.
  • the first signaling includes ⁇ a first domain, a second domain, the first domain, and K domains outside the second domain ⁇ .
  • the first domain indicates a first TPMI, the first TPMI being used to determine a first matrix, the first matrix being used to determine a precoding matrix of the first wireless signal in the present invention.
  • the second domain includes a bitmap (C 0 - C P-1 ) composed of P bits and M second TPMIs.
  • the M second TPMIs are used to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the P frequency regions The M frequency regions correspond one-to-one.
  • the P bits included in the second domain respectively indicate whether the frequency region of each of the P frequency regions belongs to the M frequency regions, and the state of M bits in the P bits is first State, the state of the remaining bits is the second state.
  • the frequency region corresponding to the bit in the first state in the P bit belongs to the M frequency regions, and the state in the P bits is the frequency region corresponding to the bit in the second state Does not belong to the M frequency regions.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the second matrix is used to determine a precoding matrix of the first wireless signal on the corresponding frequency region.
  • the first matrix is a matrix in a first candidate matrix set
  • the first TPMI is an index of the first matrix in the first candidate matrix set
  • the first candidate matrix set includes a positive integer number of matrices.
  • the first TPMI includes a number of bits that is not less than a minimum positive integer of a base 2 logarithm of the number of matrices included in the first candidate matrix set. .
  • the number of bits included in the first TPMI is 3.
  • the number of bits included in the first TPMI is 4.
  • the first TPMI includes a number of bits of 5.
  • the first TPMI includes The number of bits is 6.
  • the second matrix is one of a second candidate matrix set
  • the M second TPMIs are each of the M second matrices respectively.
  • the second TPMI includes a number of bits that is not less than a minimum positive integer of a base 2 logarithm of the number of matrices included in the second candidate matrix set.
  • the second field includes a number of bits equal to M times the number of bits included in the second TPMI plus P.
  • the number of bits included in the second TPMI is 2.
  • the number of bits included in the second TPMI is 3.
  • the number of bits included in the second TPMI is 4.
  • the first candidate matrix set includes a number of matrices larger than the number of matrices included in the second candidate matrix set.
  • the first candidate matrix set includes a number of matrices equal to the number of matrices included in the second candidate matrix set.
  • the first candidate matrix set includes a number of matrices smaller than the number of matrices included in the second candidate matrix set.
  • the number of bits in the first domain is larger than the number of bits in the second domain.
  • the number of bits in the first domain is smaller than the number of bits in the second domain.
  • the number of bits in the first domain is equal to the number of bits in the second domain.
  • any one of the K domains includes one or more of a ⁇ resource allocation domain, an MCS domain, an RV domain, an NDI domain, a HARQ process number domain, and a transmission power control domain ⁇ .
  • the K is equal to the M.
  • the K is not equal to the M.
  • the first state is 1, and the second state is 0.
  • the first state is 0 and the second state is 1.
  • Embodiment 5 illustrates a schematic diagram of the first signaling, as shown in FIG.
  • the first signaling includes ⁇ first domain, K domains outside the first domain ⁇ .
  • the first domain indicates a first TPMI, the first TPMI being used to determine a first matrix, the first matrix being used to determine a precoding matrix of the first wireless signal in the present invention.
  • any one of the K domains includes one or more of a ⁇ resource allocation domain, an MCS domain, an RV domain, an NDI domain, a HARQ process number domain, and a transmission power control domain ⁇ .
  • Embodiment 6 exemplifies a schematic diagram of the second signaling, as shown in FIG.
  • the second signaling includes ⁇ second domain, K domains outside the second domain ⁇ .
  • the second domain includes a bitmap (C 0 - C P-1 ) composed of P bits and M second TPMIs.
  • the M second TPMIs are used to determine M second matrices.
  • the frequency resource occupied by the first wireless signal in the present invention is divided into P frequency regions, and the M second matrix and the M frequency regions of the P frequency regions are in one-to-one correspondence.
  • the P bits included in the second domain respectively indicate whether the frequency region of each of the P frequency regions belongs to the M frequency regions, and the state of M bits in the P bits is first State, the state of the remaining bits is the second state.
  • the frequency region corresponding to the bit in the first state in the P bit belongs to the M frequency regions, and the state in the P bits is the frequency region corresponding to the bit in the second state Does not belong to the M frequency regions.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the second matrix is used to determine a precoding matrix of the first wireless signal on the corresponding frequency region.
  • the second matrix is in the second candidate matrix set a matrix
  • the M second TPMIs are respectively an index of each of the M second matrices in the second candidate matrix set
  • the second candidate matrix set includes a positive integer Matrix.
  • the second TPMI includes a number of bits that is not less than a minimum positive integer of a base 2 logarithm of the number of matrices included in the second candidate matrix set.
  • the second field includes a number of bits equal to M times the number of bits included in the second TPMI plus P.
  • the second TPMI includes a number of bits of two.
  • the second TPMI includes a number of bits of three.
  • the second TPMI includes a number of bits of four.
  • any one of the K domains includes one or more of a ⁇ resource allocation domain, an MCS domain, an RV domain, an NDI domain, a HARQ process number domain, and a transmission power control domain ⁇ .
  • the K is equal to the M.
  • the K is not equal to the M.
  • the first state is 1, and the second state is 0.
  • the first state is 0 and the second state is 1.
  • Embodiment 7 exemplifies a relationship between ⁇ first matrix, M second matrices ⁇ and a precoding matrix of the first wireless signal, as shown in FIG.
  • the precoding matrix of the first wireless signal is determined by ⁇ the first matrix, the M second matrices ⁇ .
  • the frequency resource occupied by the first wireless signal is divided into P frequency regions, and the M second matrix and the M frequency regions of the P frequency regions are in one-to-one correspondence.
  • the precoding matrix of the first wireless signal on any one of the M frequency regions is determined by ⁇ the first matrix, the corresponding second matrix ⁇ .
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the first wireless signal is in the M frequency regions
  • a precoding matrix on any one of the frequency regions in the domain is obtained from a product of the first matrix and the corresponding second matrix.
  • the P is equal to the M.
  • the P is greater than the M.
  • the frequency region includes a positive integer number of consecutive subcarriers.
  • the number of subcarriers included in any two of the frequency regions is the same.
  • At least two different frequency regions include the number of subcarriers that are different.
  • the P frequency regions are orthogonal to each other in the frequency domain, that is, there is no one subcarrier and belong to two different frequency regions.
  • the precoding matrix of the first radio signal is the same on different subcarriers of the same frequency region.
  • the precoding matrix of the first wireless signal is different on different frequency regions.
  • the M second matrices are indicated by the first signaling in the present invention.
  • the M second matrices are indicated by the second signaling in the present invention.
  • the first signaling in the present invention indicates an index of each of the M frequency regions in the P frequency regions.
  • the second signaling in the present invention indicates an index of each of the M frequency regions in the P frequency regions.
  • Embodiment 8 illustrates a schematic diagram of resource mapping of L reference signals in the time-frequency domain, as shown in FIG.
  • the L reference signals are respectively transmitted by L antenna ports, and the L antenna ports are also used to transmit the first wireless signal in the present invention.
  • the first matrix in the present invention and the M second matrices in the present invention are used to form the L antennas port.
  • the frequency resources occupied by the first wireless signal are divided into P frequency regions, the L antenna ports are divided into P antenna port groups, the antenna port group includes R the antenna ports, and the P antennas
  • the port group and the P frequency regions are in one-to-one correspondence, and the wireless signal transmitted by any one of the antenna port groups does not occupy the frequency resource other than the corresponding frequency region.
  • the L reference signals are divided into P reference signal groups, the reference signal group includes R reference signals, and the P reference signal groups and the P antenna port groups are in one-to-one correspondence, and the reference signal The R reference signals in the group are respectively transmitted by R of the antenna ports in the corresponding antenna port group.
  • the number of columns of the second matrix is equal to the R, and the P is multiplied by the R equal to the L.
  • the first wireless signal is transmitted by the corresponding antenna port group on the frequency region.
  • the antenna port is formed by a plurality of physical antennas through antenna virtualization, and mapping coefficients of the plurality of physical antennas to the antenna port constitute a beamforming vector.
  • the M antenna port groups of the P antenna port groups and the M second matrices are in one-to-one correspondence, the first matrix and the second matrix phase Multiplying a reference matrix, the R columns in the reference matrix are respectively the beamforming vectors of the R antenna ports included in the corresponding antenna port group.
  • the first signaling in the present invention indicates that each of the M antenna port groups is in the P antenna port group. Index in .
  • the second signaling in the present invention indicates that each of the M antenna port groups is in the P antenna port group. Index in .
  • the beamforming vector is generated by the product of an analog beamforming matrix and a digital beamforming vector.
  • the analog beam shaping matrices corresponding to the L antenna ports are the same.
  • the analog beam shaping matrices corresponding to the L antenna ports are respectively the first matrix.
  • the antenna port group is different.
  • the antenna ports in the corresponding ones correspond to different digital beamforming vectors.
  • the columns in the second matrix constitute the digital beamforming vector of the antenna port in the corresponding antenna port group.
  • the L reference signals include a DMRS.
  • the reference signal of any one of the L reference signals adopts a pattern of DMRS.
  • the P reference signal groups and the P frequency regions are in one-to-one correspondence, and the reference signal group does not occupy corresponding frequency resources outside the frequency region.
  • the M second matrices are indicated by the first signaling in the present invention.
  • the M second matrices are indicated by the second signaling in the present invention.
  • Embodiment 9 illustrates a schematic diagram of resource mapping of Q reference signals in the time-frequency domain, as shown in FIG.
  • the Q reference signals are respectively transmitted by Q antenna ports, and the first matrix in the present invention is used to form the Q antenna ports.
  • the number of columns of the first matrix is equal to the Q, and the columns of the first matrix are respectively the beamforming vectors corresponding to the Q antenna ports.
  • the Q reference signals include a DMRS.
  • the reference signal of any one of the Q reference signals adopts a pattern of DMRS.
  • the Q reference signals include a CSI-RS.
  • the reference signal of any one of the Q reference signals adopts a pattern of CSI-RS.
  • the measurement based on the Q reference signals and the M second matrices in the present invention are used to determine channel parameters corresponding to the L antenna ports in the present invention.
  • the channel parameter is CIR.
  • the L antenna ports are divided into P antenna port groups, M of the P antenna port groups, and the M
  • the second matrix corresponds one by one.
  • the channel parameters corresponding to the M antenna port groups constitute M target channel matrices, and the measurement based on the Q reference signals is used to determine a reference channel matrix, and the reference channel matrix and the M second matrix phases respectively Multiply the M target channel matrices.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • Embodiment 10 exemplifies a structural block diagram of a processing device for use in a UE, as shown in FIG.
  • the UE device 200 is mainly composed of a first receiving module 201, a first processing module 202, a second processing module 203, and a first transmitting module 204.
  • the first receiving module 201 is configured to monitor the first signaling in the first time window, and monitor the second signaling in the second time window;
  • the first processing module 202 is configured to operate the first wireless signal;
  • the second processing module 203 is configured to operate the second reference signal;
  • the first sending module 204 is configured to send uplink information.
  • the first transmitting module 204 is optional.
  • the first time window and the second time window are orthogonal to each other in a time domain
  • the first signaling includes a first domain
  • the second signaling includes a second domain.
  • the first field in the first signaling is used to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is used Forming the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is used to form The L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the operation is received, the first sending module 204 exists, and the first sending module 204 is used to determine the uplink information based on the measurement of the second reference signal, where the uplink information is used to determine At least one of the first domain, the second domain ⁇ ; or the operation is a transmission, the first sending module 204 does not exist, and the measurement based on the second reference signal is used to determine ⁇ the first At least one of a domain, the second domain ⁇ .
  • the operation is transmission
  • the first wireless signal includes L reference signals
  • the L reference signals are respectively transmitted by the L antenna ports.
  • the first processing module 202 is further configured to receive Q reference signals. The operation is received, the first domain in the first signaling is used to form Q antenna ports, and the Q reference signals are respectively sent by the Q antenna ports.
  • the Q is a positive integer.
  • the first domain is used to determine a first matrix, the first matrix being used to determine a precoding matrix of the first wireless signal.
  • the second domain is used by the first processing module 202 to determine M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, the M second matrices and the The M frequency regions in the P frequency regions are in one-to-one correspondence.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the operation is transmission, and the first domain is used by the first processing module 202 to determine the first matrix, and the first matrix is The first processing module 202 is configured to determine a precoding matrix of the first wireless signal.
  • the first receiving module 201 is further configured to receive downlink information.
  • the downlink information is used to determine at least the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window.
  • the operation is transmission, and the first domain in the first signaling is used by the first processing module 202 to form the L antenna ports.
  • the operation is to send, the first signaling includes the second domain, ⁇ the second domain in the first signaling, the second signaling At least one of the second domains ⁇ is used by the first processing module 202 to form the L antenna ports; or the first signaling includes ⁇ the first domain, the second In the former of the domain, the second domain in the second signaling is used by the first processing module 202 to form the L antenna ports.
  • the operation is reception, and the first transmission module 204 exists.
  • the operation is transmission, and the first transmission module 204 does not exist.
  • Embodiment 11 exemplifies a structural block diagram for a processing device in a base station, as shown in FIG.
  • the base station apparatus 300 is mainly composed of a second sending module 301, a third processing module 302, a fourth processing module 303, and a second receiving module 304.
  • the second sending module 301 is configured to send the first signaling in the first time window, and send the second signaling in the second time window;
  • the third processing module 302 is configured to execute the first wireless signal;
  • the fourth processing module 303 is configured to execute the second reference signal, and the second receiving module 304 is configured to receive the uplink information.
  • the second receiving module 304 is optional. If the second receiving module 304 exists, the connection line between the fourth processing module 303 and the second sending module 301 does not exist; if the second receiving module 304 does not There is a line connecting the fourth processing module 303 and the second transmitting module 301 to a solid line.
  • the first time window and the second time window are orthogonal to each other in a time domain
  • the first signaling includes a first domain
  • the second signaling includes a second domain.
  • the first field in the first signaling is used to form L antenna ports.
  • the first signaling includes the second domain, at least one of the second domain in the first signaling, and the second domain in the second signaling is used Forming the L antenna ports; or the first signaling includes a former one of ⁇ the first domain, the second domain ⁇ , and the second domain in the second signaling is used to form The L antenna ports.
  • the first wireless signal is separately transmitted by the L antenna ports.
  • the L is a positive integer.
  • the performing is a sending, the second receiving module 304 exists, the measurement based on the second reference signal is used to determine the uplink information, and the uplink information is used by the second sending module 301 to determine Said first domain, at least one of said second domain; or said performing is receiving, said second receiving module 304 is absent, said second transmitting module 301 based on said measurement of said second reference signal Used to determine at least one of ⁇ the first domain, the second domain ⁇ .
  • the performing is receiving, the first wireless signal includes L reference signals, and the L reference signals are respectively transmitted by the L antenna ports.
  • the third processing module 302 is further configured to send Q reference signals.
  • the performing is a sending, the first domain in the first signaling is used by the third processing module 302 to form Q antenna ports, and the Q reference signals are respectively used by the Q antennas.
  • the port is sent.
  • the Q is a positive integer.
  • the first domain is used to determine a first matrix, the first matrix being used to determine a precoding matrix of the first wireless signal.
  • the second domain is For determining M second matrices, the frequency resources occupied by the first radio signal are divided into P frequency regions, and the M second matrices and the M frequency regions of the P frequency regions are A correspondence.
  • the M is a positive integer and the P is a positive integer greater than or equal to the M.
  • the performing is transmission
  • the first domain is used by the third processing module 302 to determine a first matrix
  • the first matrix is The three processing module 302 is configured to determine a precoding matrix of the first wireless signal
  • the second domain is used by the third processing module 302 to determine M second matrices.
  • the second sending module 301 is further configured to send downlink information.
  • the downlink information is used to determine at least the first time window, the second time window, a ratio of a length of time of the first time window to a time length of the second time window.
  • the execution is transmission, and the first domain in the first signaling is used by the third processing module 302 to form L antenna ports.
  • the performing is sending, the first signaling includes the second domain, ⁇ the second domain in the first signaling, the second signaling At least one of the second domains ⁇ is used by the third processing module 302 to form the L antenna ports; or the first signaling includes ⁇ the first domain, the second In the former of the domain, the second domain in the second signaling is used by the third processing module 302 to form the L antenna ports.
  • the execution is transmission, the second receiving module 304 exists, and a connection line between the fourth processing module 303 and the second sending module 301 does not exist.
  • the execution is reception, the second receiving module 304 does not exist, and the connection line between the fourth processing module 303 and the second transmission module 301 becomes a solid line. .
  • the UE or the terminal in the present invention includes, but is not limited to, a mobile communication device such as a mobile phone, a tablet computer, a notebook, an internet card, an Internet of Things communication module, an in-vehicle communication device, an NB-IOT terminal, and an eMTC terminal.
  • the base station or system equipment in the present invention includes, but is not limited to, a macro communication base station, a micro cell base station, a home base station, a relay base station, and the like.

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Abstract

La présente invention concerne un dispositif et un procédé de transmission à antennes multiples dans un équipement utilisateur (UE) et une station de base. Dans un mode de réalisation, un UE surveille une première signalisation dans une première fenêtre temporelle et surveille une seconde signalisation dans une seconde fenêtre temporelle; un premier signal sans fil est actionné. La première fenêtre temporelle et la seconde fenêtre temporelle sont orthogonales l'une à l'autre dans le domaine temporel; la première signalisation comprend un premier domaine; la seconde signalisation comprend un second domaine. Le premier domaine dans la première signalisation est utilisé pour former des ports d'antenne L. La première signalisation comprend le second domaine; au moins l'un du {second domaine dans la première signalisation et le second domaine dans la seconde signalisation} est utilisé pour former les ports d'antenne L. Le premier signal sans fil est envoyé séparément par les L ports d'antenne. La mise en œuvre constitue la réception, ou la mise en œuvre constitue la transmission. La présente invention peut réduire le nombre de détections aveugles d'UE et peut garantir la qualité de transmission simultanée.
PCT/CN2017/072714 2017-01-26 2017-01-26 Dispositif et procédé de transmission à antennes multiples dans un équipement utilisateur et station de base Ceased WO2018137228A1 (fr)

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PCT/CN2017/072714 WO2018137228A1 (fr) 2017-01-26 2017-01-26 Dispositif et procédé de transmission à antennes multiples dans un équipement utilisateur et station de base
CN201780065831.9A CN109964416B (zh) 2017-01-26 2017-01-26 一种用于多天线传输的用户设备、基站中的方法和装置
CN202210518654.8A CN114944857A (zh) 2017-01-26 2017-01-26 一种用于多天线传输的用户设备、基站中的方法和装置

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