WO2013107367A1 - Procédé pour un retour d'informations à partir d'un livre de codes, dispositif de réception de signaux, procédé et dispositif pour la transmission de signaux - Google Patents

Procédé pour un retour d'informations à partir d'un livre de codes, dispositif de réception de signaux, procédé et dispositif pour la transmission de signaux Download PDF

Info

Publication number
WO2013107367A1
WO2013107367A1 PCT/CN2013/070627 CN2013070627W WO2013107367A1 WO 2013107367 A1 WO2013107367 A1 WO 2013107367A1 CN 2013070627 W CN2013070627 W CN 2013070627W WO 2013107367 A1 WO2013107367 A1 WO 2013107367A1
Authority
WO
WIPO (PCT)
Prior art keywords
matrix
signal
preset
matrices
codebook set
Prior art date
Application number
PCT/CN2013/070627
Other languages
English (en)
Chinese (zh)
Inventor
史志华
董伟辉
刘建军
刘光毅
Original Assignee
中国移动通信集团公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Publication of WO2013107367A1 publication Critical patent/WO2013107367A1/fr

Links

Classifications

    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a codebook feedback method, a signal receiving apparatus, a signal transmitting method and a device. Background technique
  • MIMO Multiple-input-multiple-output
  • the space division feature of the MIMO system enables the system to support multiple data streams, which improves the throughput of the system.
  • the diversity characteristics of the MIMO system can improve the reliability of the system transmission and improve the user experience.
  • the currently adopted MIMO technology belongs to two-dimensional (2D, 2 Dimensions) MIMO technology.
  • the precoding/beamforming technique corresponds to the M transmit antennas.
  • the signal is weighted to match the current channel, thereby improving system performance.
  • each antenna consists of K small units (which can be called antenna elements).
  • the 3D MIMO system can directly control each antenna element through baseband processing.
  • precoding/beam assignment The type technique can weight the signals corresponding to the MxK antenna elements.
  • 3D MIMO technology can dynamically change part of the bandwidth or the downtilt angle of the whole antenna through the processing of the baseband signal. On the one hand, it can improve the energy of the current user receiving signal, on the other hand, it can effectively suppress the system between The interference can improve the overall performance of the wireless network.
  • Embodiments of the present invention provide a codebook feedback method, a signal receiving apparatus, a signal transmitting method, and a device, which are used to provide a specific implementation scheme for transmitting signals between a signal sender and a signal receiver in a 3D MIMO system.
  • a codebook feedback method in a three-dimensional multiple input multiple output 3D MIMO system comprising the steps of: 3D MIMO a signal receiver in the system selects a plurality of first matrices from a preset first set of codebooks, and selects a plurality of second matrices from a preset second set of codebooks; a matrix of the selected first matrix The matrix identifier of the identified and selected second matrix is sent to the signal sender.
  • a signal receiving apparatus in a three-dimensional multiple-input multiple-output 3D MIMO system comprising: a first matrix selecting unit, configured to select, if the first first codebook set is preset, a thousand first matrix; a second matrix selecting unit, For selecting a plurality of second matrices from a preset second set of codebooks; a sending unit, a matrix identifier for selecting a first matrix selected by the first matrix selecting unit, and a second selected by the second matrix selecting unit The matrix identification of the matrix is sent to the signal transmitting device.
  • a signal transmission method in a three-dimensional multiple-input multiple-output 3D MIMO system comprising the steps of: when a signal sender in a 3D MIMO system needs to send a signal to a signal receiver, select from a preset first codebook set Thousand first matrices, selecting a plurality of second matrices from a preset second set of codebooks; and a signal matrix to be sent to the signal receiver according to the selected plurality of first matrices and if the thousands of second matrices Performing a weighting process; and transmitting each signal obtained after the weighting process to the signal receiver.
  • a signal transmitting apparatus in a three-dimensional multiple-input multiple-output 3D MIMO system comprising: a first matrix selecting unit, configured to: when the signal transmitting apparatus needs to send a signal to a signal receiving apparatus, from a preset first codebook set Selecting a plurality of first matrices; a second matrix selecting unit, configured to select a plurality of second matrices from a preset second set of codebooks when the signal transmitting apparatus needs to send a signal to the signal receiving apparatus; a unit, configured to perform weighting processing on a signal stream that needs to be sent to the signal receiving device according to the first matrix selected by the first matrix selecting unit and the second matrix selected by the second matrix selecting unit; Each signal obtained by the weighting processing unit after the weighting process is transmitted to the signal receiving device.
  • a first codebook set and a second codebook set are set in advance for a 3D MIMO system, where the first codebook set includes a preset number of first matrices, and the second codebook set includes a preset a plurality of second matrices, when the signal sender in the 3D MIMO system needs to send a signal to the signal receiver, select a plurality of first matrices from the first codebook set, and select from the preset second codebook set. Thousand second matrices, and weighting the signal matrix to be sent to the signal receiver according to the selected first matrix and the plurality of second matrices, and then transmitting the signals obtained by the weighting processing to the Signal receiver.
  • the embodiment of the present invention provides a specific implementation scheme for transmitting signals between a signal sender and a signal receiver in a 3D MIMO system, which can effectively reduce the overhead of codebook feedback, improve system performance, and reduce system implementation.
  • FIG. 1 is a schematic structural diagram of a transmitting antenna of a 2D MIMO system in the prior art
  • FIG. 2 is a schematic structural diagram of a transmitting antenna of a 3D MIMO system in the prior art
  • 3 is a schematic flowchart of a codebook feedback method in a 3D MIMO system according to Embodiment 1 of the present invention
  • 4 is a schematic structural diagram of a signal receiving apparatus in a 3D MIMO system according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic flowchart of a signal sending method in a 3D MIMO system according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic structural diagram of a signal transmitting apparatus in a 3D MIMO system according to Embodiment 4 of the present invention. detailed description
  • FIG. 3 it is a flowchart of a codebook feedback method in a 3D MIMO system according to Embodiment 1 of the present invention, and the specific processing procedure is as follows:
  • Step 31 The signal receiver in the 3D MIMO system selects a thousand first matrices from a preset first set of codebooks, and selects a thousand second matrices from a preset second set of codebooks.
  • the signal sender in the 3D MIMO system may be a base station, and the corresponding signal receiver is a user equipment (UE, User Equipment), and the signal sender may also be a UE, and the corresponding signal receiver is a base station.
  • UE User Equipment
  • the signal receiver can select, but is not limited to, the first matrix and the second matrix according to a preset selection criterion.
  • the selection criterion can be the largest capacity, the least interference, or the signal to interference plus noise ratio (SINR, Signal to Interference plus Noise). Ratio ) is the highest.
  • the signal sender in the 3D MIMO system uses M transmit antennas, and each transmit antenna is composed of K antenna elements, and the corresponding number is (X, y).
  • the set of antenna elements in the same horizontal direction is (1, y), (2, y), ..., (M, y), and y corresponds to the line.
  • a first codebook set C1 and a second codebook set C2 are preset for the 3D MIMO system, specifically:
  • the first matrix subset P1 corresponds to the row number 1 (ie, the number of rows of the signal matrix is 1)
  • the first matrix subset ⁇ 2 corresponds to the row number 2 (ie, the number of rows of the signal matrix is 2)
  • a matrix subset Pi corresponds to the number of rows i (i.e., the number of rows in the signal matrix is i).
  • the signal receiver selects the first matrix from the first codebook set C1, firstly, according to the number of rows of the signal matrix to be received, among the first matrix subsets included in the first codebook set, The first matrix subset corresponding to the number of rows of the received signal matrix is selected, and the first matrix is selected from the selected first matrix subset.
  • the number of rows of each first matrix in each first matrix subset is an antenna included in each transmitting antenna of the signal sender
  • the number of rows K, the number of columns is the number of rows of the signal matrix received by the signal receiver.
  • the size of each first matrix in the first matrix subset P1 is Kx l
  • the first matrix in the first matrix subset P2 The size of each matrix is Kx2
  • the size of each first matrix in the first matrix subset Pi is Kxi.
  • the second matrix subset R1 corresponds to the column number 1 (ie, the number of columns of the signal matrix is 1)
  • the second matrix subset R2 corresponds to the column number 2 (ie, the number of columns of the signal matrix is 2)
  • the second matrix subset Ri corresponds to the number of columns i (ie, the number of columns in the signal matrix is i).
  • the signal receiver selects the thousands of second matrices from the second codebook set C2, firstly, according to the number of columns of the signal matrix to be received, among the plurality of second matrix subsets included in the second codebook set, The second matrix subset corresponding to the number of columns of the received signal matrix is selected, and the second matrix is selected from the selected second matrix subset.
  • the number of rows of each second matrix in each second matrix subset is the number M of transmitting antennas of the signal sender, and the number of columns is the number of columns of the signal matrix received by the signal receiver, for example, each of the first matrix subset R1
  • the size of the second matrix is Mx l
  • the size of each second matrix in the second matrix subset R2 is ⁇ 2
  • so on the size of each second matrix in the second matrix subset Ri is Mxi.
  • Each first matrix in the first codebook set C1 has a corresponding number, that is, a corresponding matrix identifier
  • each second matrix in the second codebook set C2 also has a corresponding number, that is, a corresponding matrix identifier.
  • the signal receiver selects a plurality of first matrices from the first codebook set C1
  • the following three methods may be used:
  • the signal receiver selects a first matrix from the preset first codebook set C1;
  • the signal receiver selects J first matrices from the preset first codebook set C1, where J is the number of columns of the signal matrix received by the signal receiver;
  • the signal receiver selects M first matrices from the preset first codebook set C1.
  • the signal receiver selects a second matrix from the preset second codebook set C2;
  • the signal receiver selects K second matrices from the preset second codebook set C2;
  • the signal receiver selects one second matrix from the preset second codebook set, where I is the number of rows of the signal matrix received by the signal receiver.
  • the signal receiving direction signal sender has the following seven methods:
  • the first feedback mode The signal receiver selects a first matrix from the preset first codebook set C1. Selecting a second matrix from the preset second codebook set C2;
  • the second feedback mode the signal receiver selects J first matrices from the preset first codebook set C1. Selecting a second matrix from the preset second codebook set C2;
  • the third feedback mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
  • the fourth feedback mode the signal receiver selects J first matrices from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
  • the fifth feedback mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects a second matrix from the preset second codebook set C2;
  • the sixth feedback mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2;
  • the seventh feedback mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2.
  • Step 32 Send the selected matrix identifier of the first matrix and the selected matrix identifier of the second matrix to the signal sender.
  • the signal receiver may, but is not limited to, performing codebook feedback periodically, and the first codebook set C1 and the second codebook set C2 correspond to the same feedback period, for example, simultaneously feeding back the matrix identifier of the first matrix and the second matrix.
  • the matrix identifier, the first codebook set C1 and the second codebook set C2 may also correspond to different feedback periods.
  • the feedback period of the first codebook set C1 may be an integer multiple of the feedback period of the second codebook set C2.
  • the signal receiver selects a first matrix
  • the selected matrix identifier of the first matrix is sent to the signal sender. If M or J first matrices are selected, each of the selected first matrices is respectively selected. The corresponding matrix identifier is sent to the signal sender.
  • the signal receiver selects a second matrix
  • the matrix identifier of the selected second matrix is sent to the signal sender, if K or I are selected. The two matrix sends the matrix identifier corresponding to each of the selected second matrices to the signal sender.
  • the signal receiver and the signal sender may pre-store the first codebook set C1 and the second codebook set C2, followed by The codebook feedback may be directly used by using the pre-stored first codebook set C1 and the second codebook set C2; in addition, the signal receiver and the signal sender may also obtain the first codebook set C1 and the second from the network device periodically. Codebook set C2.
  • the signal receiver may perform codebook feedback based on the full bandwidth, or may perform codebook feedback based on the subband, and preset each subband for performing codebook feedback, and the signal receiver selects the first matrix and In the second matrix, for each of the preset sub-bands, a thousand first matrices are respectively selected from the preset first codebook set, and a thousand second matrices are selected from the preset second codebook set. Then, for each of the preset subbands, the matrix identifier of the first matrix selected for the subband and the matrix identifier of the selected second matrix are respectively sent to the signal sender.
  • Embodiment 2 Corresponding to the codebook feedback method in the 3D MIMO system according to the first embodiment of the present invention, the second embodiment of the present invention provides a signal receiving apparatus in a 3D MIMO system, and the structure thereof is as shown in FIG. 4, including:
  • a first matrix selecting unit 41 configured to select a plurality of first matrices from a preset first set of codebooks
  • a second matrix selecting unit 42 configured to select a plurality of seconds from a preset second set of codebooks
  • the transmitting unit 43 is configured to send the matrix identifier of the first matrix selected by the first matrix selecting unit 41 and the matrix identifier of the second matrix selected by the second matrix selecting unit 42 to the signal transmitting apparatus.
  • the first codebook set includes a plurality of first matrix subsets, each of the first matrix subsets includes a plurality of first matrices, each of the first matrix subsets respectively corresponding to a signal matrix received by the signal receiver
  • the number of rows of each first matrix in the first matrix subset is the number of antenna elements included in each transmitting antenna of the signal sender, and the number of columns is the number of rows of the signal matrix received by the signal receiver;
  • the first matrix selecting unit 41 specifically includes:
  • a first matrix sub-set selection sub-unit configured to select, according to the number of rows of the signal matrix that the signal receiving device needs to receive, a plurality of first matrix subsets included in the first codebook set, and select a signal matrix to be received The first matrix subset corresponding to the number of rows;
  • the first matrix selection sub-unit is configured to select a plurality of first matrices from the first matrix subset selected by the first matrix sub-set selection sub-unit.
  • the second codebook set includes a plurality of second matrix subsets, each second matrix subset includes a plurality of second matrices, each of the second matrix subsets respectively corresponding to the signal matrix received by the signal receiver
  • the number of rows of each second matrix in the second matrix subset is the number of transmit antennas of the signal sender, and the number of columns is the number of columns of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 42 specifically includes:
  • a second matrix sub-set selection sub-unit configured to select, according to the number of columns of the signal matrix that the signal receiving device needs to receive, a plurality of second matrix subsets included in the second codebook set, and select a signal matrix to be received a second matrix subset corresponding to the number of columns;
  • a second matrix selection sub-unit configured to select a plurality of second matrices from the second matrix sub-set selected by the second matrix sub-set selection sub-unit.
  • the first matrix selecting unit 41 is configured to select, for each preset subband, a plurality of first matrices from a preset first set of codebooks;
  • the second matrix selecting unit 42 is specifically configured to select, for each preset subband, a thousand second matrices from a preset second codebook set;
  • the sending unit 43 is specifically configured to: respectively, for each preset subband, a matrix identifier of the first matrix selected by the first matrix selecting unit for the subband and a second selected by the second matrix selecting unit for the subband The matrix identifier of the matrix is sent to the signal sender.
  • the first matrix selecting unit 41 is specifically configured to select a first matrix from the preset first codebook set;
  • the second matrix selecting unit 42 is specifically configured to select a second matrix from the preset second codebook set.
  • the first matrix selecting unit 41 is specifically configured to select J first matrices from a preset first set of codebooks, where J is a number of columns of signal matrices received by the signal receiver;
  • the second matrix selecting unit 42 is specifically configured to select a second matrix from the preset second codebook set.
  • the first matrix selecting unit 41 is specifically configured to select a first matrix from the preset first codebook set;
  • the second matrix selecting unit 42 is specifically configured to select K second matrices from the preset second set of codebooks, where K is the number of antenna matrices included in each antenna of the signal sender.
  • the first matrix selecting unit 41 is specifically configured to select J first matrices from a preset first set of codebooks, where J is a number of columns of signal matrices received by the signal receiver;
  • the second matrix selecting unit 42 is specifically configured to select K second matrices from the preset second set of codebooks, where K is the number of antenna matrices included in each antenna of the signal sender.
  • the first matrix selecting unit 41 is specifically configured to select M first matrices from the preset first codebook set, where M is the number of transmit antennas of the signal sender;
  • the second matrix selecting unit 42 is specifically configured to select a second matrix from the preset second codebook set.
  • the first matrix selecting unit 41 is specifically configured to select a first matrix from the preset first codebook set;
  • the second matrix selecting unit 42 is specifically configured to select one second matrix from the preset second codebook set, where I is the number of rows of the signal matrix received by the signal receiver.
  • the first matrix selecting unit 41 is specifically configured to select M first matrices from the preset first codebook set, where M is the number of transmit antennas of the signal sender;
  • the second matrix selecting unit 42 is specifically configured to select one second matrix from the preset second codebook set, where I is the number of rows of the signal matrix received by the signal receiver.
  • FIG. 5 it is a flowchart of a signal sending method in a 3D MIMO system according to Embodiment 3 of the present invention, and the specific processing flow is as follows:
  • Step 51 When the signal sender in the 3D MIMO system needs to send a signal to the signal receiver, select one thousand first matrices from the preset first codebook set, and select from the preset second codebook set. Thousand second matrices;
  • the signal sender in the 3D MIMO system may be a base station, and the corresponding signal receiver is the UE, and the signal sender may also be the UE, and the corresponding signal receiver is the base station.
  • the first codebook set mentioned in the third embodiment of the present invention is identical to the first codebook set C1 in the first embodiment of the present invention.
  • the second codebook set mentioned in the third embodiment of the present invention and the embodiment of the present invention The second codebook set C2 in one is not repeated here.
  • a signal sender in a 3D MIMO system when a signal sender in a 3D MIMO system needs to send a signal to a signal receiver, it may directly select a thousand first matrix in a preset first codebook set C1, for example, selecting a first a matrix or selecting J first matrices or selecting M first matrices, where J is the number of columns of the signal matrix sent by the signal transmitting direction receiver, wherein the signal sender can select the time-sharing method as the signal receiver Selecting the first matrix, for example, at the time of DO, if the number of rows of the transmitted signal matrix is 1, selecting the first first matrix from the first first matrix subset of the first codebook set, at time D1 If the number of rows of the transmitted signal matrix is 1, the second first matrix is selected from the first first matrix subset of the first codebook set, and so on, at the time of Ds, if the signal matrix is transmitted The number of rows is I, and the (s-1)th first matrix is selected from the first first matrix subset of the first codebook
  • Second matrix or K second matrix, I is the number of rows of the signal matrix sent by the signal transmitting direction receiver, wherein the signal sender can select the second matrix for the signal receiver in a time-sharing manner, for example
  • the first second matrix is selected from the Jth second matrix subset of the second codebook set, and at D1 if the signal matrix is transmitted
  • the second second matrix is selected from the Jth second matrix subset of the second codebook set, and so on.
  • Ds time if the number of columns of the transmitted signal matrix is J, Then, the (s-1)th second matrix is selected from the Jth second matrix subset of the second codebook set.
  • the third embodiment of the present invention further provides that the signal sender may first receive the matrix identifier of the thousands of first matrices and the matrix identifier of the second matrix fed back by the signal receiver, and then, when it is required to send a signal to the signal receiver, according to Receiving the matrix identifiers of the thousands of first matrices, selecting a corresponding number of first matrices from the preset first codebook set, and according to the received matrix identifiers of the plurality of second matrices, from the preset A corresponding number of second matrices are selected in the second codebook set.
  • the signal sender can directly select the first matrix corresponding to the matrix identifier of the received first matrix in the first codebook set C1 according to the matrix identifier of the received first matrix, if the signal is received.
  • the party feedbacks the matrix identifier of a first matrix, and the signal sender selects the first matrix corresponding to the matrix identifier received in the first codebook set C1, and if the signal receiver feeds back J or M first matrices
  • the matrix identifier, the signal sender selects the first matrix corresponding to the matrix identifier in the first codebook set C1 for each matrix identifier received; the signal sender can also directly according to the received second matrix a matrix identifier, in the second codebook set C2, selecting a second matrix corresponding to the matrix identifier of the received second matrix, if the signal receiver feeds back a matrix matrix of the second matrix
  • the signal sender selects the received second matrix corresponding to the matrix identifier in the second codebook set C2, and if the signal receiver feeds.
  • the signal sender selects the first matrix and the second matrix, not only according to the matrix identifier fed back by the signal receiver, but also can integrate other factors (such as the current system state or matrix identifier of other signal receiver feedback) from the first
  • the first matrix is selected from the codebook set C1 and the second matrix is selected from the second codebook set C2.
  • the signal sender when the signal sender receives the matrix identifier of the first matrix fed back by the signal receiver, the signal identifier of the first matrix that is respectively fed back by the signal receiver for the preset subbands may be received.
  • the signal sender determines, for each physical resource block (PRB) that needs to send a signal to the signal receiver, a matrix identifier of the thousands of first matrices that the signal receiving policy feeds back to the subband to which the PRB belongs, and according to Determining the matrix identifier of the first matrix, selecting a corresponding number of first matrices from the preset first codebook set C1; similarly, when the signal sender receives the matrix identifier of the second matrix fed back by the signal receiver, And receiving, by the signal receiver, matrix identifiers of the plurality of second matrices respectively fed back to the preset subbands, where the signal sender separately determines a signal receiving policy for the PRB for each PRB that needs to send a signal to the signal receiver.
  • the PRBs perform weighting processing on the signal matrix that needs to be sent to the signal receiver in the PRB according to the first matrix and the second matrix selected for the PRB.
  • the signal sender selects the first matrix and the second matrix in the following seven manners:
  • the first selection mode The signal receiver selects a first one from the preset first codebook set C1. a matrix, selecting a second matrix from the preset second codebook set C2;
  • the second selection mode the signal receiver selects J first matrices from the preset first codebook set C1, and selects a second matrix from the preset second codebook set C2;
  • the third selection mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
  • the fourth selection mode the signal receiver selects J first matrices from the preset first codebook set C1, and selects K second matrices from the preset second codebook set C2;
  • the fifth selection mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects a second matrix from the preset second codebook set C2;
  • the sixth selection mode the signal receiver selects a first matrix from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2;
  • the seventh selection mode the signal receiver selects M first matrices from the preset first codebook set C1, and selects one second matrix from the preset second codebook set C2.
  • Step 52 Perform weighting processing on a signal matrix that needs to be sent to a signal receiver according to the selected first matrix and the plurality of second matrices;
  • the size of the signal matrix to be sent to the signal receiver be IxJ, that is, the number of rows of the signal matrix is I, the number of columns is J, and the size of the first matrix in the first codebook set C1 is Kxl, the second codebook set The size of the second matrix in C2 is MxJ.
  • the signal sender performs weighting on the signal matrix that needs to be sent to the signal receiver in the following eight ways:
  • the first processing mode the signal sender selects a first matrix W from the preset first codebook set C1, and selects a second matrix V from the preset second codebook set C2, which needs to be sent to the signal receiving.
  • the square signal matrix is S, where:
  • Wi is the i-th row vector of the selected first matrix W.
  • the first matrix W has a total of K row vectors
  • Sj is the j-th column vector of the signal matrix S
  • the signal matrix S has J column vectors.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • VH is the conjugate transposed matrix of the second matrix V.
  • KxM signals By performing the weighting process on the signal matrix S that needs to be transmitted to the signal receiver by the above processing method, KxM signals can be obtained.
  • Wj,i is the i-th row vector of the selected jth first matrix Wj
  • the first matrix Wj has a total of K row vectors
  • Sj is the j-th column vector of the signal matrix S
  • the signal matrix S has J columns vector.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • VH is the conjugate transposed matrix of the second matrix V.
  • the third processing mode the signal sender selects a first matrix w from the preset first codebook set C1, and selects K second matrices V from the preset second codebook set C2, which is recorded as VI.
  • the signal matrix that needs to be sent to the receiver of the signal is:
  • Wi is the i-th row vector of the selected first matrix W.
  • the first matrix W has a total of K row vectors
  • Sj is the j-th column vector of the signal matrix S
  • the signal matrix S has a total of J column vectors.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • ViH is a conjugate transposed matrix of the i-th second matrix Vi.
  • KxM signals By performing the weighting process on the signal matrix S that needs to be transmitted to the signal receiver by the above processing method, KxM signals can be obtained.
  • Wj,i is the i-th row vector of the selected jth first matrix Wj
  • the first matrix Wj has a total of K row vectors
  • Sj is the j-th column vector of the signal matrix S
  • the signal matrix S has J columns vector.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • the fifth processing mode the signal sender selects a first matrix W from the preset first codebook set C1, and selects a second matrix V from the preset second codebook set C2, which needs to be sent to the signal receiving.
  • the square signal matrix is S, where:
  • Vj is the jth row vector of the selected second matrix V
  • the second matrix V has M row vectors, which is the transposition of the i-th column vector of the signal matrix S that needs to be sent to the signal receiver, the signal matrix S There are a total of J column vectors.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • VjH is the conjugate transpose of the jth row vector of the second matrix V.
  • KxM signals By performing the weighting process on the signal matrix S that needs to be transmitted to the signal receiver by the above processing method, KxM signals can be obtained.
  • Vj is the jth row vector of the selected second matrix V
  • the second matrix V has M row vectors, which is the transposition of the i-th column vector of the signal matrix S that needs to be sent to the signal receiver, the signal matrix S There are a total of J column vectors.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • VjH is the conjugate transpose of the jth row vector of the second matrix V.
  • the signal matrix that needs to be sent to the signal receiver is s, where:
  • Vi j is the jth row vector of the selected i-th second matrix Vi
  • the second matrix Vi has M row vectors
  • A is the i-th column vector of the signal matrix S to be sent to the signal receiver Transposed
  • the signal matrix S has a total of J column vectors.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • Vi H is a conjugate transpose of the j-th row vector of the i-th second matrix Vi.
  • Vij is the jth row vector of the selected i-th second matrix Vi, and the second matrix Vi has M row vectors, which is the transposition of the i-th column vector of the signal matrix S that needs to be sent to the signal receiver.
  • the signal matrix S has a total of J column vectors.
  • the signal sender performs weighting on the signal matrix S that needs to be sent to the signal receiver in the following manner:
  • VijH is a conjugate transpose of the jth row vector of the i-th second matrix Vi.
  • Step 53 Send each signal obtained after the weighting process to the signal receiver.
  • the signal sender determines a corresponding transmit antenna for each of the KxM signals obtained after the weighting process, and determines an antenna frame corresponding to the signal in the determined antenna array included in the transmit antenna, and determines The antenna element transmits the signal to the signal receiver.
  • the third embodiment of the present invention proposes that if the signals transmitted by multiple antenna elements on the same transmitting antenna are always in a fixed relationship, the antenna antennas can be equivalently regarded as a virtual/logical antenna array.
  • the number K of the antenna elements in the third embodiment of the present invention may be the number of physical antenna elements or the number of virtual/logical antenna elements, ⁇ ⁇ , and the above scheme can still be used at this time, except that ⁇ is used instead of ⁇ .
  • the first codebook set and the second codebook set are set in advance for the 3D UI system, where the first codebook set includes a preset number of the first matrix, and the second The codebook set includes a preset number of second matrixes, and when the signal sender in the 3D system needs to send a signal to the signal receiver, the first matrix is selected from the first codebook set, and the first matrix is preset.
  • the embodiment of the present invention provides a specific implementation scheme for transmitting signals between a signal sender and a signal receiver in a 3D system, which can effectively reduce the overhead of codebook feedback, improve system performance, and reduce system implementation. The overall complexity.
  • the fourth embodiment of the present invention provides a signal transmission apparatus in a 3D MIMO system, and the structure thereof is as shown in FIG. 6, which includes:
  • the first matrix selecting unit 61 is configured to select, when the signal sending device needs to send a signal to the signal receiving device, a plurality of first matrices from the preset first codebook set;
  • a second matrix selecting unit 62 configured to select, when the signal sending device needs to send a signal to the signal receiving device, a plurality of second matrices from a preset second codebook set;
  • the weighting processing unit 63 is configured to perform weighting processing on the signal stream that needs to be sent to the signal receiving device according to the first matrix selected by the first matrix selecting unit 61 and the second matrix selected by the second matrix selecting unit 62;
  • the signal transmitting unit 64 transmits, to the signal receiving device, each signal obtained by performing weighting processing by the weighting processing unit 63.
  • the signal sending device further includes:
  • a first matrix identifier receiving unit configured to receive a matrix identifier of the plurality of first matrices fed back by the signal receiver before the first matrix selecting unit 61 selects the plurality of first matrices from the preset first codebook set;
  • the first matrix selecting unit 61 is specifically configured to identify, according to the first matrix, a plurality of first matrices received by the receiving unit a matrix identifier, selecting a corresponding number of first matrices from a preset first set of codebooks; a second matrix identifier receiving unit, configured to select, in the second matrix selection unit 62, from a preset second set of codebooks Before a plurality of second matrices, receiving matrix identifiers of the plurality of second matrices fed back by the signal receiver;
  • the second matrix selecting unit 62 is configured to select a corresponding number of second matrices from the preset second codebook set according to the matrix identifiers of the plurality of second matrices received by the second matrix identifier receiving unit.
  • the first matrix identifier receiving unit is specifically configured to receive, by the signal receiving party, matrix identifiers of the plurality of first matrices respectively fed back for the preset subbands;
  • the first matrix selection unit 61 is specifically configured to determine, for each PRB that needs to send a signal to the signal receiver, a matrix identifier of the first matrix of the signal received by the subband of the PRB, and according to the determined a matrix identifier of the first matrix, and selecting a corresponding number of first matrices from the preset first codebook set;
  • a second matrix identifier receiving unit configured to receive, by the signal receiving party, matrix identifiers of the thousands of second matrices respectively fed back for the preset subbands;
  • the second matrix selecting unit 62 is specifically configured to determine, for each PRB that needs to send a signal to the signal receiving party, a matrix identifier of the plurality of second matrices that the signal receiving policy feeds back to the subband to which the PRB belongs, and according to the determined a matrix identifier of the second matrix, selecting a corresponding number of second matrices from the preset second codebook set;
  • the weighting processing unit 63 is specifically configured to: for each PRB that needs to send a signal to the signal receiver, respectively, according to the first matrix selected by the first matrix selecting unit for the PRB and the second matrix selecting unit for the PRB The two matrix weights the signal matrix that needs to be sent to the signal receiver in the PRB.
  • the signal sending unit is specifically configured to determine, for each of the KxM signals obtained by weighting the weighting processing unit, a corresponding transmit antenna, and determine the antenna frame included in the determined transmit antenna.
  • the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 62 is specifically configured to select a second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
  • the weighting processing unit 63 performs weighting processing on the signal matrix that needs to be transmitted to the signal receiver in the following manner:
  • Wi is the ith row vector of the selected first matrix
  • V is a selected second matrix
  • VH is a conjugate transposed matrix of the second matrix V
  • Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
  • the first matrix selecting unit 61 is specifically configured to select J first matrices from a preset first set of codebooks, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal sender Number ⁇ , the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 62 is specifically configured to select a second matrix from a preset second codebook set, where the number of rows of the second matrix is the number of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
  • the weighting processing unit 63 weights the signal matrix that needs to be transmitted to the signal receiver in the following manner:
  • Wj,i is the ith row vector of the selected jth first matrix
  • V is a selected second matrix
  • VH is a conjugate transposed matrix of the second matrix V
  • Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
  • the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 62 is specifically configured to select K second matrices from a preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
  • the weighting processing unit 63 performs weighting processing on the signal matrix that needs to be transmitted to the signal receiver in the following manner: [ w x s x w x s 2
  • Wi is the ith row vector of the selected _ matrix
  • Vi is the selected i-th second matrix, and ViH is the conjugate transposed matrix of the i-th second matrix Vi;
  • Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
  • the first matrix selecting unit 61 is configured to select J first matrices from a preset first set of codebooks, the number of rows of the first matrix being each transmission of the signal sender
  • the number of antenna elements included in the antenna ⁇ , the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 62 is specifically configured to select a second matrix from a preset second codebook set, where the number of rows of the second matrix is the number of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
  • the weighting processing unit 63 weights the signal matrix that needs to be transmitted to the signal receiver in the following manner:
  • Wj,i is the ith row vector of the selected jth first matrix
  • Vi is the selected i-th second matrix, and ViH is the conjugate transposed matrix of the i-th second matrix Vi;
  • Sj is the jth column vector of the signal matrix that needs to be sent to the signal receiver.
  • the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 62 is specifically configured to select a second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
  • the weighting processing unit 63 performs weighting processing on the signal matrix that needs to be transmitted to the signal receiver in the following manner:
  • w is the selected first matrix
  • VjH is a conjugate transpose of the jth row vector of the second matrix V;
  • S i is the transpose of the ith column vector of the signal matrix that needs to be sent to the signal receiver.
  • the first matrix selecting unit 61 is specifically configured to select M first matrices from a preset first set of codebooks, where the number of rows of the first matrix is an antenna ray included in each transmitting antenna of the signal transmitting party.
  • Number K the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 62 is specifically configured to select a second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is received by the signal receiver The number of columns of the signal matrix J;
  • Weighting processing unit Description The signal sent to the signal receiver Weighting:
  • Wj is the selected jth first matrix
  • ⁇ is the selected second matrix
  • VjH is the conjugate transpose of the jth row vector of the second matrix V
  • Si is the transposition of the ith column vector of the signal matrix that needs to be sent to the signal receiver.
  • the first matrix selecting unit 61 is specifically configured to select a first matrix from a preset first codebook set, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal sender. Number K, the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the second matrix selecting unit 62 is specifically configured to select one second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
  • the weighting processing unit 63 describes the manner in which the weighting process needs to be sent to the receiver:
  • W is the selected first matrix
  • Vij is the jth row vector of the selected i-th second matrix
  • Vi H is the yoke transpose of the j-th row vector of the i-th second matrix
  • Si is the transposition of the ith column vector of the signal matrix that needs to be sent to the signal receiver.
  • the first matrix selecting unit 61 is specifically configured to select M first matrices from a preset first set of codebooks, where the number of rows of the first matrix is an antenna element included in each transmitting antenna of the signal transmitting party.
  • Number K the number of columns is the number of rows I of the signal matrix received by the signal receiver;
  • the first matrix selecting unit 62 is specifically configured to select one second matrix from the preset second codebook set, where the number of rows of the second matrix is the number M of transmitting antennas of the signal sender, and the number of columns is the signal receiving side. The number of columns of the received signal matrix J;
  • the weighting processing unit 63 weights the signal matrix that needs to be transmitted to the signal receiver in the following manner:
  • Wj is the selected jth first matrix
  • Vij is the jth row vector of the selected ith second matrix, and VijH is the yoke transpose of the jth row vector of the i th second matrix;
  • Si is the transposition of the ith column vector of the signal matrix that needs to be sent to the signal receiver.

Landscapes

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

Abstract

La présente invention se rapporte à un procédé pour un retour d'informations à partir d'un livre de codes. L'invention se rapporte d'autre part à un dispositif de réception de signaux, ainsi qu'à un procédé et à un dispositif pour la transmission de signaux. Le procédé pour la transmission de signaux, selon l'invention, comprend les étapes suivantes, consistant : quand un dispositif de transmission de signaux d'un système MIMO 3D doit transmettre un signal à un dispositif de réception de signaux, à sélectionner une pluralité de premières matrices de signaux à partir d'un premier ensemble prédéfini de livres de codes, et à sélectionner une pluralité de secondes matrices de signaux à partir d'un second ensemble prédéfini de livres de codes ; sur la base de la pluralité sélectionnée de premières matrices de signaux et de la pluralité sélectionnée de secondes matrices de signaux, à pondérer les matrices de signaux devant être transmises au dispositif de réception de signaux ; et à transmettre chaque signal pondéré au dispositif de réception de signaux. La solution technique de la présente invention propose une solution spécifique pour exécuter une transmission de signaux entre un dispositif de transmission de signaux et un dispositif de réception de signaux dans un système MIMO 3D.
PCT/CN2013/070627 2012-01-19 2013-01-17 Procédé pour un retour d'informations à partir d'un livre de codes, dispositif de réception de signaux, procédé et dispositif pour la transmission de signaux WO2013107367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210018007.7A CN103220090B (zh) 2012-01-19 2012-01-19 码本反馈方法及信号接收装置、信号发送方法及装置
CN201210018007.7 2012-01-19

Publications (1)

Publication Number Publication Date
WO2013107367A1 true WO2013107367A1 (fr) 2013-07-25

Family

ID=48798636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/070627 WO2013107367A1 (fr) 2012-01-19 2013-01-17 Procédé pour un retour d'informations à partir d'un livre de codes, dispositif de réception de signaux, procédé et dispositif pour la transmission de signaux

Country Status (2)

Country Link
CN (1) CN103220090B (fr)
WO (1) WO2013107367A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105794041B (zh) * 2014-03-31 2019-08-20 富士通株式会社 码书确定装置、信息反馈装置和通信系统
CN105684336B (zh) * 2014-09-26 2019-07-19 华为技术有限公司 信道测量方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101800628A (zh) * 2010-02-12 2010-08-11 中兴通讯股份有限公司 一种获取信道状态信息的方法和系统
CN101931513A (zh) * 2010-05-18 2010-12-29 中兴通讯股份有限公司 信道状态信息的反馈方法及终端
CN102130749A (zh) * 2010-01-12 2011-07-20 中国移动通信集团公司 下行信号的发送系统、方法以及相关装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8107544B2 (en) * 2007-05-16 2012-01-31 Motorola Mobility, Inc. Method and apparatus for feedback in closed loop transmitting
CN101330479B (zh) * 2007-06-20 2011-04-20 中兴通讯股份有限公司 一种预编码多输入多输出传输及码本编码的方法
KR101707680B1 (ko) * 2008-12-21 2017-02-17 엘지전자 주식회사 무선 통신 시스템에서 정보 전송 장치 및 방법
CN101867447B (zh) * 2010-04-30 2015-09-16 中兴通讯股份有限公司 信道状态信息的反馈方法及终端

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102130749A (zh) * 2010-01-12 2011-07-20 中国移动通信集团公司 下行信号的发送系统、方法以及相关装置
CN101800628A (zh) * 2010-02-12 2010-08-11 中兴通讯股份有限公司 一种获取信道状态信息的方法和系统
CN101931513A (zh) * 2010-05-18 2010-12-29 中兴通讯股份有限公司 信道状态信息的反馈方法及终端

Also Published As

Publication number Publication date
CN103220090B (zh) 2017-03-22
CN103220090A (zh) 2013-07-24

Similar Documents

Publication Publication Date Title
TWI674773B (zh) 無線通信方法、發起者設備和應答器設備
CN105210307B (zh) 用于天线阵列信道反馈的方法和设备
CN105264787B (zh) 用于天线阵列信道反馈的方法和设备
CN104184561B (zh) 预编码导频处理方法、装置、基站及终端
WO2016008330A1 (fr) Procédé et dispositif pour quantifier et retourner des informations de canal et des données de précodage
WO2018059161A1 (fr) Procédé de communication sans fil, et dispositif de communication sans fil
CN110034797B (zh) 一种预编码矩阵指示的反馈方法及装置
TW200908625A (en) Method and apparatus for creating a multi-user MIMO codebook using a single user MIMO codebook
WO2015109796A1 (fr) Procédé et dispositif de traitement d'informations d'état de canal, terminal et station de base
WO2011020226A1 (fr) Procédé et dispositif de construction de livre de code, procédé, dispositif et système de codage préalable
CN107888269A (zh) 一种报告信道状态信息的方法、用户设备和基站
TW201212570A (en) A method and system for orthogonalized beamforming in multiple user multiple input multiple output (MU-MIMO) communication systems
WO2014101055A1 (fr) Procédé de renvoi d'informations d'état de canal, équipement utilisateur et station de base
WO2012035425A1 (fr) Procédé destiné à déterminer une matrice de précodage, procédés et dispositifs de communication correspondants
WO2013107377A1 (fr) Procédé pour un retour d'informations à partir d'un livre de codes, dispositif de réception de signaux, procédé et dispositif pour la transmission de signaux
WO2014169873A1 (fr) Procédé de rétroaction de matrice de précodage et terminal
CN102356566B (zh) 在使用预编码的多用户网络中的通信方法及其设备
JP2021535651A (ja) 空間遅延プリコーディングを採用する受信機、送信機、システム、および方法
WO2011085694A1 (fr) Procédé de retour d'informations d'état de canal pour cellules multiples, et équipement utilisateur
WO2013091526A1 (fr) Procédé et dispositif pour la rétroaction de données d'état de canal
JP2013504901A (ja) 多入力多出力ビーム形成のデータ送信方法及び装置
CN106160938B (zh) 一种信道信息的获取方法和装置
WO2014205848A1 (fr) Procédé et dispositif de détermination d'indicateur de matrice de précodage, équipement d'utilisateur, et station de base
CN105519029A (zh) Ofdm通信系统及信号收发方法与装置
CN102598731A (zh) 获取下行信道状态信息的方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13738363

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13738363

Country of ref document: EP

Kind code of ref document: A1