WO2018171604A1 - Procédé et appareil de transmission d'informations - Google Patents

Procédé et appareil de transmission d'informations Download PDF

Info

Publication number
WO2018171604A1
WO2018171604A1 PCT/CN2018/079721 CN2018079721W WO2018171604A1 WO 2018171604 A1 WO2018171604 A1 WO 2018171604A1 CN 2018079721 W CN2018079721 W CN 2018079721W WO 2018171604 A1 WO2018171604 A1 WO 2018171604A1
Authority
WO
WIPO (PCT)
Prior art keywords
matrix
antenna port
access network
pmi
port groups
Prior art date
Application number
PCT/CN2018/079721
Other languages
English (en)
Chinese (zh)
Inventor
黄逸
任海豹
李元杰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2018171604A1 publication Critical patent/WO2018171604A1/fr

Links

Images

Classifications

    • 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
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]

Definitions

  • the present application relates to communication technologies, and in particular, to a method and device for transmitting information.
  • Massive Multiple Input Multiple Output (Massive MIMO) technology is one of the key technologies of New Radio Access Technology (NR), which can increase system capacity by using more space degrees of freedom. Therefore, it has been extensively studied.
  • the transmitting end in order to improve system transmission performance by performing precoding on the transmitting end, the transmitting end needs to know channel state information (CSI), and the CSI is usually obtained by the receiving end for channel measurement and reported to the system.
  • the sender In the prior art, the CSI reported by the receiving end to the transmitting end mainly includes a Channel Quality Indicator (CQI), a Precoding Matrix Index (PMI), and a Rank Indication (RI).
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Index
  • RI Rank Indication
  • the transmitting end may determine the precoding matrix according to the PMI, and perform precoding processing on the data to improve system transmission performance.
  • Multi-panel dual-polarized array antennas are introduced in large-scale MIMO technology. As a whole, the array spacing of the antenna structure is not uniform, and the existing precoding matrix is designed for uniform matrix structure, and is not suitable for multiple The dual-polarized array antenna of the panel continues to be used, which may cause beam shape changes, which may cause problems such as beam accuracy degradation and system performance loss.
  • the present application provides a method and a device for transmitting information, in order to solve the technical problem that the precoding matrix in the prior art cannot be applied to a multi-panel dual-polarized array antenna, and if the prior art is pre-
  • the coding matrix is used for multi-panel dual-polarized array antennas, and the resulting beam shape change leads to technical problems of beam accuracy degradation and system performance loss.
  • the application provides a method for transmitting information, including:
  • Step 1 The terminal obtains a target precoding matrix based on a reference signal sent by the access network device through multiple antenna port groups;
  • Step 2 The terminal determines target indication information corresponding to the target precoding matrix according to the codebook, where the codebook includes a correspondence between a precoding matrix and the indication information, where the precoding matrix is a product of the first matrix and the second matrix, and a first matrix for selecting a first antenna port group from the plurality of antenna port groups or for characterizing a difference parameter between the plurality of antenna port groups, the second matrix comprising a portion of the plurality of antenna port groups or a sub-precoding matrix corresponding to all antenna port groups;
  • Step 3 The terminal sends the foregoing target indication information to the access network device.
  • the method further includes:
  • the terminal receives the first configuration information from the access network device, where the first configuration information is used to indicate the codebook used by the terminal.
  • the method further includes:
  • the terminal receives second configuration information from the access network device, where the second configuration information is used to configure parameters of the codebook.
  • the second configuration information includes at least one of the number of antenna port groups and the number of antenna ports in the antenna port group.
  • the foregoing target indication information includes a first precoding matrix indicating PMI and a second PMI, where the first PMI is used to indicate the first matrix, and the second PMI is used to indicate the second matrix.
  • the present application provides a method for transmitting information, where the method is used for an access network device, and the access network device sends information through multiple antenna port groups, and the method includes:
  • Step 1 The access network device receives channel state information reported by the terminal, and the channel state information includes target indication information.
  • Step 2 The access network device determines, according to the codebook, a target precoding matrix corresponding to the target indication information, where the codebook includes a correspondence between the indication information and the precoding matrix, where the precoding matrix is a product of the first matrix and the second matrix.
  • the first matrix is configured to select a first antenna port group from the plurality of antenna port groups or to characterize a difference parameter between the plurality of antenna port groups, and the second matrix includes part or all of the antennas of the plurality of antenna port groups The sub-precoding matrix corresponding to the port group.
  • the method further includes:
  • the access network device sends the first configuration information to the terminal, where the first configuration information is used to configure the terminal to use the foregoing codebook.
  • the method further comprises:
  • the access network device sends second configuration information to the terminal, where the second configuration information is used to configure parameters of the foregoing codebook.
  • the second configuration information includes the number of antenna port groups and/or the number of antenna ports in the antenna port group.
  • the foregoing target indication information includes a first precoding matrix indicating PMI and a second PMI, the first PMI is used to indicate the first matrix, and the second PMI is used to indicate the second matrix.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the multiple antenna port groups, and the first matrix is used to represent the multiple a phase difference between the wireless channels corresponding to the antenna port group; further, the first matrix is The second matrix is The target precoding matrix is W, and Among them, in the formula Indicates the length is a matrix, k is equal to any value of j 1 , j 2 ...
  • N is the number of antenna port groups of the access network device
  • M is the antenna port in the antenna port group Quantity
  • the phase difference between the two polarization directions of the antenna port group Equal to any value in ⁇ +1, -1, +j, -j ⁇
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, and the first matrix is configured to select from the multiple antenna port groups.
  • a first antenna port group specifically, the first matrix is The second matrix is The target precoding matrix is W, and among them, Indicates the length is The matrix, k is equal to any value of j 1 , j 2 ...
  • N is the antenna port group on the access network device Number
  • M is the number of antenna ports in each antenna port group
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, and the first matrix is configured to select from the multiple antenna port groups.
  • a first antenna port group specifically, the first matrix is The second matrix is Target precoding matrix among them, Indicates the length is a matrix, k is equal to any of j 1 , j 2 ... j N ;
  • I M represents an identity matrix of length M ⁇ M; an element in ⁇ a 1 , a 2 ... a N ⁇ is 1, other elements are 0, N is the total number of antenna port groups on the access network device, and M is the number of antenna ports in each antenna port group.
  • the phase difference between two polarized antennas on the access network device, Is equal to any one of ⁇ +1, -1, +j, -j ⁇ , the ⁇ a 1 , a 2 ... a N ⁇ is determined according to a first PMI, the j 1 , j 2 ... j N is determined according to the second PMI.
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, and the first matrix is configured to select from the multiple antenna port groups.
  • a first antenna port group specifically, the first matrix is The second matrix is The target precoding matrix is among them, Indicates the length is The matrix, k is equal to j 1 ;
  • I M represents an identity matrix of length M ⁇ M; one element in ⁇ a 1 , a 2 ... a N ⁇ is 1, the other elements are 0, and N is the access network
  • the total number of antenna port groups on the device where M is the number of antenna ports in each antenna port group.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the plurality of antenna port groups, and the first matrix is used to represent between the wireless channels corresponding to the multiple antenna port groups.
  • Phase difference specifically, the first matrix is The second matrix is Target precoding matrix among them, Indicates the length is a matrix, k is equal to any value of j 1 , j 2 ...
  • N is the number of antenna port packets on the access network device
  • M is each antenna port group The number of antenna ports in the The phase difference between two polarized antennas on the access network device, Equal to any value in ⁇ +1, -1, +j, -j ⁇
  • l is the phase difference between the corresponding radio channels of each antenna port group in the S antenna port groups
  • l is the value in the set ⁇ 2,4,8,... ⁇
  • X is equal to ⁇
  • the number of quantization bits, l is determined according to the first PMI
  • j 1 , j 2 ... j N are determined according to the second PMI.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the plurality of antenna port groups, and the first matrix is used to represent between the wireless channels corresponding to the multiple antenna port groups.
  • the number of quantization bits l is determined according to the first PMI, and j 1 is determined according to the second PMI.
  • the target indication information further includes: a third PMI with a value of 0 corresponding to the target precoding matrix, and the target precoding matrix includes a product of the first matrix and the second matrix, specifically:
  • the target precoding matrix is equal to the product of the first matrix, the second matrix, and the third matrix; wherein, the third matrix is a unit matrix, and the number of rows and the number of columns of the unit matrix are equal to the antenna port of the access network device. total.
  • the first PMI includes a modulation symbol that is reported on the uplink shared channel PUSCH, and the modulation symbol is a symbol that is quantized and modulated by ⁇ in the first matrix.
  • the application provides a terminal, comprising: a unit or means for performing the steps of the above first aspect.
  • the application provides an access network device, including: a unit or means for performing the steps of the second aspect above.
  • the present application provides a terminal comprising at least one processing element for storing a program and data, and at least one storage element for performing the first aspect of the present application The method provided.
  • the present application provides an access network device including at least one processing element for storing programs and data, and at least one processing element for performing the present application
  • the second aspect provides a method.
  • the application provides a terminal comprising at least one processing element (or chip) for performing the method of the above first aspect.
  • the application provides an access network device comprising at least one processing element (or chip) for performing the method of the above second aspect.
  • the present application provides a processing program for information that, when executed by a processor, is used to perform the method of the above first aspect.
  • the present application provides a processing program for information that, when executed by a processor, is used to perform the method of the second aspect above.
  • the present application provides a program product, such as a computer readable storage medium, comprising the program of the ninth aspect.
  • the present application provides a program product, such as a computer readable storage medium, including the program of the tenth aspect.
  • the target precoding matrix W considers the difference parameter between the antenna port groups, or the target precoding matrix W may be a precoding matrix for a first antenna port group. Therefore, even if there are multiple antenna panels in the access network device, and the spacing of the plurality of antenna panel arrays is not uniform, the present application can correct the directivity of multiple beams by using both methods, thereby avoiding excessive side lobes. The beamforming gain is increased, which in turn increases the capacity of the antenna.
  • FIG. 1 is a network architecture diagram provided by an embodiment of the present application
  • 1a is a schematic structural diagram of a multi-panel dual-polarized array antenna according to an embodiment of the present application
  • FIG. 2 is a signaling flowchart of Embodiment 1 of a method for transmitting information provided by the present application
  • 2a is a signaling flowchart of an embodiment of a method for transmitting information according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of an embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of another embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 6B is a schematic structural diagram of another embodiment of a terminal according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of an embodiment of an access network device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another embodiment of an access network device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another embodiment of an access network device according to an embodiment of the present disclosure.
  • FIG. 10A is a schematic structural diagram of another embodiment of an access network device according to an embodiment of the present disclosure.
  • FIG. 10B is a schematic structural diagram of another embodiment of an access network device according to an embodiment of the present disclosure.
  • the method and device for transmitting information provided by the present application can be applied to the system architecture shown in FIG. 1.
  • the system includes: an access network device and at least one terminal, and the access network device sends data to the terminal through an antenna.
  • the structure of the antenna has evolved into a multi-panel dual-polarized array antenna.
  • FIG. 1 a is a schematic structural diagram of a multi-panel dual-polarized array antenna according to an embodiment of the present application.
  • the antenna includes a plurality of antenna panels.
  • Each square on the left side of the figure represents an antenna panel, and each of the intersecting lines on the right side represents an antenna array, and each oblique line in the cross line represents a polarization direction.
  • d g, H and d g, V represent the distance between the antenna panels in the horizontal and vertical directions , respectively, where d g, H and d g, V may be the same or different.
  • the number of antenna elements is not limited.
  • a terminal also called a User Equipment (UE)
  • UE User Equipment
  • UE User Equipment
  • a terminal is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • terminals are: mobile phones, tablets, laptops, PDAs, mobile Internet devices (MIDs), wearable devices, such as smart watches, smart bracelets, pedometers, and the like.
  • MIDs mobile Internet devices
  • wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • the Radio Access Network is the part of the network that connects the terminal to the wireless network.
  • a RAN node or a RAN device or an access network device is a node or device in a radio access network, and may also be referred to as a base station.
  • RAN nodes are: gNB, Transmission Reception Point (TRP), evolved Node B (eNB), Radio Network Controller (RNC), and Node B (Node).
  • the RAN may include a Centralized Unit (CU) node and a Distributed Unit (DU) node.
  • CU Centralized Unit
  • DU Distributed Unit
  • This structure separates the protocol layers of the eNB in Long Term Evolution (LTE). The functions of some protocol layers are centrally controlled in the CU. The functions of some or all of the remaining protocol layers are distributed in the DUs. Centrally control each DU.
  • LTE Long Term Evolution
  • Multiple means two or more, and other quantifiers are similar. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • the design of the existing precoding matrix is designed for a uniform antenna array.
  • the antenna arrays in the uniform antenna array are evenly distributed, that is, the distance between the antenna elements is equal. Therefore, the design using a conventional precoding matrix changes the beam shape without the required beam, resulting in reduced beam accuracy and system performance loss.
  • the method and device for transmitting information provided by the embodiments of the present application when the antenna array spacing is not uniform, for example, a multi-panel antenna, divides the entire antenna into multiple antenna port groups, and designs a matrix to reflect the difference between the antenna port groups. Then, the precoding matrix is characterized by the matrix and the sub-precoding matrix of the antenna port groups, thereby solving the problem of beam precision degradation caused by the linear precoding matrix. Or designing a matrix to select an antenna port group, so that the precoding matrix is only for one antenna port group, which reduces the problem of beam precision degradation caused by the difference between the antenna port groups. Therefore, the precoding matrix provided by the embodiment of the present application can correct the directivity of multiple beams corresponding to the antenna panel, avoid excessive side lobes, thereby improving beamforming gain, and thereby increasing the antenna. Capacity.
  • the antenna ports on one panel may be divided into one group, or the antenna ports in the same polarization direction on each panel may be divided into one group.
  • FIG. 2 is a signaling flowchart of Embodiment 1 of a method for transmitting information provided by the present application.
  • the terminal sends the target indication information corresponding to the target precoding matrix W to the access network device based on the reference signal sent by the access network device through the multiple antenna port groups, so that the access network device according to the target indication
  • the information determines the specific process of the target precoding matrix W.
  • the method includes the following steps:
  • the access network device sends information to the terminal by using multiple antenna port groups.
  • the information may be a downlink reference signal.
  • the terminal obtains a target precoding matrix based on a reference signal sent by the access network device through multiple antenna port groups.
  • the access network device has multiple antenna port groups, and each antenna port group includes one or more ports.
  • the access network device may have multiple antenna panels, and the spacing between the multiple antenna panels may be equal or not equal, which is not limited in this embodiment.
  • the antenna port may be a beamformed CSI-RS antenna port for transmitting a beamformed CSI-RS signal, and a beamformed CSI-RS antenna port may correspond to one beam, and each antenna panel may change a beam right.
  • the values form a plurality of beams directed in multiple directions, the plurality of beams corresponding to a plurality of different beamformed CSI-RS antenna ports.
  • the access network device When the access network device needs to perform precoding on the downlink data, optionally, the access network device sends the downlink reference signal to the terminal through multiple antenna port groups. After receiving the reference signal sent by the access network device through the multiple antenna port groups, the terminal device performs channel estimation based on the reference signals to obtain a measurement result H, where the H is a channel matrix. Then, the terminal may perform SVD decomposition on the H to obtain a feature vector (ie, a unitary matrix V), and then compare the feature vector with each precoding matrix in the codebook, and select a precoding matrix closest to the feature vector as a target. Precoding matrix.
  • a feature vector ie, a unitary matrix V
  • the terminal determines target indication information corresponding to the target precoding matrix according to the codebook, where the codebook includes a correspondence between a precoding matrix and the indication information, where the precoding matrix is a product of the first matrix and the second matrix.
  • the first matrix is configured to select a first antenna port group from the plurality of antenna port groups or to characterize a difference parameter between the multiple antenna port groups, where the second matrix includes the multiple a sub-precoding matrix corresponding to some or all of the antenna port groups of the antenna port group;
  • S104 The terminal sends the target indication information to the access network device.
  • the target indication information corresponding to the target precoding matrix may be determined according to the preset codebook of the terminal device side, where the target indication information may be the codebook corresponding to the target precoding matrix. Index, or PMI.
  • the preset codebook on the terminal device side is the new codebook provided by the application.
  • the new codebook may be embodied in the form of a correspondence between the codebook index and the precoding matrix, and may also be embodied in the form of a table.
  • the new codebook includes a plurality of precoding matrices, and each precoding matrix corresponds to one indication information.
  • Each precoding matrix in the codebook may include a product of both the first matrix and the second matrix.
  • "each precoding matrix may include a product of both the first matrix and the second matrix”.
  • each precoding matrix is equal to the product of the first matrix and the second matrix, and may also be a product between the first matrix, the second matrix and other matrices or other parameters, where the "product" may be the first matrix and The product of the second matrix may also be the Kronecker product of the first matrix and the second matrix.
  • one precoding matrix in the new codebook provided by the present application may be split into the first matrix. And the second matrix, or split into more matrices.
  • the first matrix is configured to select a first antenna port group from a plurality of antenna port groups of the access network device or to identify a difference parameter between the plurality of antenna port groups of the access network device, where the second matrix includes a sub-precoding matrix w corresponding to a part or all of the antenna port groups of the plurality of antenna port groups of the network device, wherein the sub-precoding matrix w corresponding to one antenna port group in the second matrix is the antenna port group class B codebook
  • the sub-precoding matrix w corresponding to it For example, if the number of antenna ports in the antenna port group is 4, the sub-precoding matrix w corresponding to the antenna port group is a precoding matrix in the codebook of the 4-antenna port in the codebook of classB.
  • the difference parameter between the multiple antenna port groups may be a phase difference between respective wireless channels of the multiple antenna port groups, where the phase difference refers to a phase between frequency domain impulse responses of the wireless channel.
  • the difference parameter may also be a parameter capable of characterizing other differences between the plurality of antenna port groups, such as amplitude differences and the like.
  • the access network device receives channel state information reported by the terminal, where the channel state information includes target indication information.
  • the access network device determines, according to the codebook, a target precoding matrix W corresponding to the target indication information.
  • the access network device and the terminal both store the new codebook provided by the present application. Therefore, based on the new codebook, after the access network device receives the channel state information sent by the terminal, determining the target precoding matrix W from the new codebook based on the target indication information in the channel state information, and further utilizing the The target precoding matrix W precodes the downlink data to improve the performance of the system.
  • the target precoding matrix W considers the difference parameter between the antenna port groups, or the target precoding matrix W can be a precoding matrix for one first antenna port group, and therefore, even the access network device
  • the present application can correct the directivity of multiple beams by using both methods, avoiding excessive side lobes, and improving the beam shaping gain. Increased the capacity of the antenna.
  • the method includes:
  • the access network device sends the first configuration information to the terminal, where the first configuration information is used to configure the terminal to use the codebook.
  • S202 The terminal receives the first configuration information from the access network device.
  • the access network device may send the first configuration information to the terminal after the reference signal is sent by using the multiple antenna port groups, where the first configuration information is used to configure the terminal to use the codebook, that is, the terminal is notified Which codebook is used to determine the target precoding matrix.
  • the same number of antenna ports corresponds to multiple sets of new codebooks (that is, the codebook provided by the present application), and the access network device may determine the number of antenna ports based on the number of antenna ports on which the reference signal is transmitted.
  • the codebook then informs the terminal of the selected codebook in advance through the first configuration information, so that the terminal device can combine the decomposition result (ie, the matrix V) after obtaining the channel measurement result H and performing SVD decomposition on the terminal device.
  • the precoding matrix with the highest correlation with the unitary matrix may be directly searched from the codebook indicated by the first configuration information as the target precoding matrix W, thereby combining the target precoding matrix W and the codebook to determine the target precoding matrix.
  • W corresponds to the target indication information in the codebook. Therefore, the embodiment avoids that the access network device searches for the target precoding matrix W from all the new codebooks based on the target indication information, but specifically determines the target preamble directly from the codebook indicated by the first configuration information.
  • the coding matrix W improves the search efficiency of the target pre-compiled matrix.
  • the embodiment may further include the steps of S203 and S204.
  • the S203 and S204 may be performed after S202, and may also be performed in parallel with S201 and S202.
  • S203 The access network device sends second configuration information to the terminal, where the second configuration information is used to configure parameters of the codebook.
  • the second configuration information includes the number of antenna port groups and/or the number of antenna ports in the antenna port group.
  • S204 The terminal receives the second configuration information from the access network device.
  • the access network device sends the second configuration information to the terminal device, where the second configuration information is used to configure the parameters of the codebook, for example, the number of antenna ports corresponding to the configuration codebook.
  • the second configuration information may include the number of antenna port groups and/or the number of antenna ports in the antenna port group.
  • the content included in the second configuration information may be different in different scenarios.
  • multiple beams formed by multiple antenna panels of the access network device may be combined, and the resources occupied by the multiple components constitute one CSI-RS resource.
  • the number of antenna panels of the access network device is N, that is, the number of antenna port groups on the access network device is N, and the number of antenna ports in each antenna port group is equal to M, then the access network device has M*N antennas.
  • a port (number sum) which may correspond to a precoding matrix of length M*N in the codebook provided by the present application, and therefore needs to perform feedback of indication information based on a codebook of length MN.
  • the second scenario multiple beams formed by one antenna panel on the access network device (ie, beamformed CSI-RS antenna ports) can be combined, and the resources occupied by the access network form a CSI-RS resource.
  • the number of antenna panels is N, that is, the number of antenna port groups on the access network device is N, and the number of beamformed CSI-RS antenna ports in each antenna port group is equal to M. Therefore, there are a total of N CSI-RS resources.
  • the CSI-RS signals transmitted by the antenna ports corresponding to the N CSI-RS resources may be combined to perform CSI measurement, corresponding to a precoding matrix of length M*N, and a codebook of length M*N is used for PMI. Feedback.
  • the second configuration information includes a total number of antenna port groups (N) on the access network device and a number of antenna ports in each antenna port group.
  • the access network device may determine, according to the total number of antenna ports on the access network device, the codebook that is required to be used by the access network device, and then notify the terminal by using the first configuration information, so that the terminal is based on the access network.
  • the device performs channel estimation by using reference signals sent by all antenna port groups of the access network device, and the estimated channel matrix H includes channel information corresponding to all antenna ports.
  • the terminal selects the target precoding matrix W corresponding to the channel matrix H from the codebook notified by the access network device based on the channel matrix H.
  • the target precoding matrix W may be equal to the product of the first matrix and the second matrix, and may also be equal to the Kronecker product of the first matrix and the second matrix.
  • the first matrix is used to select one antenna port group from all antenna port groups of the access network device, which is called a first antenna port group, and the second matrix includes each access network device.
  • the sub-precoding matrix corresponding to the antenna port group the sub-precoding matrix w can be referred to the description of the first embodiment, that is, one sub-precoding matrix w is actually an antenna port group of the access network device corresponding to the existing one.
  • Class B A precoding matrix w in the codebook, such that the N subprecoding matrices w can form a second matrix.
  • the second configuration information includes: the number S of the partial antenna port groups of the first embodiment and the number of antenna ports of each of the S antenna port groups.
  • the access network device may determine, according to the total number of antenna ports of the S antenna port groups determined by the access network device, the codebook that is required to be used by the access network device, and then notify the terminal by using the first configuration information.
  • the channel is estimated based on the reference signals sent by the access network device through the S antenna port groups, and the estimated channel matrix H includes channel information corresponding to all antenna ports in the S antenna port groups.
  • the terminal selects the target precoding matrix W corresponding to the channel matrix H from the codebook notified by the access network device based on the channel matrix H.
  • the target precoding matrix W may be equal to the product of the first matrix and the second matrix, and may also be equal to the Kronecker product of the first matrix and the second matrix.
  • the first matrix is configured to characterize a phase difference between wireless channels corresponding to each antenna port group in the S antenna port groups.
  • the second matrix includes the sub-precoding matrix w corresponding to the S antenna port groups of the access network device.
  • the sub-precoding matrix w refer to the description of the first embodiment, that is, a sub-precoding matrix w is actually connected.
  • One antenna port group of the network access device corresponds to a precoding matrix w in the existing class B codebook, so that the S sub-precoding matrices w can form a second matrix.
  • the indication information in the new codebook provided by the application may include two PMIs, where the target indication information includes a first precoding matrix indicating PMI and a second PMI, where the PMI may be a codebook index in the codebook.
  • the first PMI is used to indicate the first matrix
  • the second PMI is used to indicate the second matrix.
  • the content of the second configuration information in the two different scenarios and the process of determining the target precoding matrix W are described.
  • the following describes the structure of the target precoding matrix in different scenarios from different scenarios.
  • the target precoding matrix W can be split into a two-level matrix, and can also be split into a three-level matrix. See the following possible implementation manners.
  • the target precoding matrix W is divided into two levels of matrix as an example.
  • the structure of the third-level matrix refer to the following embodiments:
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, where the first matrix is used Selecting a first antenna port group from the plurality of antenna port groups; the first matrix is The second matrix is The target precoding matrix is W, and Wherein said Indicates the length is Matrix (ie Yes a matrix of row 1 columns, the k+1th element is 1 and the remaining elements are 0, the k is equal to any value in j 1 , j 2 ...
  • the N is the number of antenna port groups on the access network device
  • the M is the number of antenna ports in each antenna port group, a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ , the ⁇ a 1 , a 2 ... a N ⁇ being determined according to the first PMI, the j 1 , j 2 . ..j N is determined according to the second PMI.
  • the target precoding matrix It can be split into two levels of matrix, which are a first matrix and a second matrix.
  • One element in the first matrix is 1, and the other elements are all 0.
  • Multiplying the first matrix and the second matrix is equivalent to An antenna port group is selected from all antenna port groups of the access network device, and the obtained target precoding matrix W is a precoding matrix corresponding to the first antenna port group selected for the first matrix.
  • the value of the first PMI determines a value of a 1 , a 2 ... a N
  • the value of the second PMI determines a value of j 1 , j 2 . . . N N
  • the first PMI may include multiple values
  • the second PMI may also include multiple values.
  • a 1 , a 2 may have a value of ⁇ 0, 1 ⁇ , and only one of a 1 and a 2 is 1.
  • W 2 is a second matrix, and W 1 is a first matrix.
  • the W 1 and W 2 are respectively indicated by independent indication information. For example, W 1 is indicated by the first PMI, that is, the value of a 1 , a 2 is determined by the first PMI.
  • the first PMI may be a wideband PMI or a sub-band PMI.
  • W 2 is indicated by the second PMI, that is, the values of j 1 and j 2 may be determined by the second PMI, and j 1 may be equal to j 2 or may not be equal to j 2 .
  • the second PMI may be a sub-band PMI.
  • the corresponding codebook structure may be shown in Table 1.
  • the codebook structure shown in Table 1 is a new codebook provided by the present application.
  • the corresponding first PMI is i 1,1 , i 1,2
  • the corresponding second PMI is i 2,1 , i 2,2 , i 2,3 . That is, in this example, the first PMI includes two values, namely i 1,1 , i 1,2
  • the second PMI includes three values, namely i 2,1 , i 2,2 , i 2,3
  • the phase difference between i 2, 3 and the two polarized antennas on the access network device correspond.
  • i 1,1 is equal to the value of the a 1 element in the first matrix
  • i 1,2 is equal to the value of the a 2 element in the first matrix
  • only one of a 1 , a 2 is 1, i 2 , 1 is equal to j 1 , i 2 , 2 is equal to j 2
  • the terminal device determines that the first PMI i 1,1 of the target precoding matrix W is equal to 0, i 1,2 is equal to 1, and the second PMI of the target precoding matrix W is i 2 , 1 is equal to 0, i 2 , 2 is equal to 1, i 2 , 3 is equal to 1
  • the access network may determine the target precoding matrix according to the codebook shown in Table 1 above.
  • the target precoding matrix W is a preamble corresponding to the first antenna port group selected for the first matrix due to the limitation of the value of the element in the first matrix.
  • the coding matrix therefore, reduces the problem of beam accuracy degradation caused by the difference between antenna port groups, so that the access network device performs downlink data processing using the target precoding matrix W for a first antenna port group When the beam directivity is clear, there will be no excessive beam side lobes.
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, where the first matrix is used Selecting a first antenna port group from the plurality of antenna port groups; the first matrix is The second matrix is The target precoding matrix is W, and Wherein said Indicates the length is a matrix, the k being equal to any of j 1 , j 2 ... j N ; the I M representing an identity matrix of length M ⁇ M; ⁇ a 1 , a 2 ... a N ⁇ One element is 1, and all other elements are 0.
  • the N is the total number of antenna port groups on the access network device, and the M is the number of antenna ports in each antenna port group.
  • the target precoding matrix W is the same as the target precoding matrix in the first possible implementation manner, and both are In this embodiment, the target precoding matrix W is also split into a two-level matrix.
  • the first matrix is The second matrix is I M denotes an identity matrix of length M ⁇ M. One element in ⁇ a 1 , a 2 ... a N ⁇ in the first matrix is 1, and all other elements are 0.
  • the value of the first PMI determines a 1 , a 2 ...a The value of N
  • the value of the second PMI determines the value of j 1 , j 2 ... j N .
  • the first PMI may include multiple values
  • the second PMI may also include multiple values.
  • a 1 , a 2 may have a value of ⁇ 0, 1 ⁇ , and only one of a 1 and a 2 is 1.
  • W 2 is the second matrix
  • W 1 is the first matrix with The sub precoding matrices w corresponding to the two antenna port groups respectively.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of a 1 , a 2 is determined by the first PMI.
  • the first PMI may be a wideband PMI or a sub-band PMI.
  • W 2 is indicated by the second PMI, that is, the values of j 1 and j 2 may be determined by the second PMI, and j 1 may be equal to j 2 or may not be equal to j 2 .
  • the second PMI may be a sub-band PMI.
  • the target precoding matrix W in this example is the codebook structure shown in Table 1, and the access network device can determine the target from the codebook structure shown in Table 1 according to the first PMI and the second PMI reported by the terminal device. Precoding matrix W.
  • the target precoding matrix W is the first selected for the first matrix due to the definition of the values of the elements of a 1 , a 2 ... a N in the first matrix.
  • the precoding matrix corresponding to the antenna port group thereby reducing the problem of beam accuracy degradation caused by the difference between the antenna port groups, so that the access network device utilizes the target precoding for a first antenna port group
  • the matrix W performs downlink data processing, its beam directivity is clear, and excessive beam side lobes are not generated.
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, where the first matrix is used Selecting a first antenna port group from the plurality of antenna port groups; the first matrix is The second matrix is The target precoding matrix is Wherein said Indicates the length is a matrix, the k is equal to j 1 ; the I M represents an identity matrix of length M ⁇ M; one element in ⁇ a 1 , a 2 ...
  • N is the total number of antenna port groups on the access network device
  • M is the number of antenna ports in each antenna port group, a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ , the ⁇ a 1 , a 2 ... a N ⁇ being determined according to the first PMI, the j 1 according to the first Two PMI confirmed.
  • the target precoding matrix It is also split into a two-level matrix.
  • the first matrix is The second matrix is I M denotes an identity matrix of length M ⁇ M.
  • One element in ⁇ a 1 , a 2 ... a N ⁇ in the first matrix is 1, and all other elements are 0.
  • the value of the first PMI determines a 1 , a 2 ...a
  • the value of N the value of the second PMI determines the value of j 1 .
  • the first PMI may include multiple values, and the second PMI may also include multiple values.
  • a 1 , a 2 may have a value of ⁇ 0, 1 ⁇ , and only one of a 1 and a 2 is 1.
  • W 1 is the first matrix
  • W 2 is the second matrix
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of a 1 , a 2 is determined by the first PMI.
  • the first PMI may be a wideband PMI or a sub-band PMI.
  • W 2 is indicated by the second PMI, ie the value of j can be determined by the second PMI.
  • the second PMI may be a sub-band PMI.
  • the codebook structure is similar to that in Table 1.
  • the codebook structure is preset on the access network device and the terminal device, so that when the terminal device reports the first PMI and the second PMI, the access network The device can then perform the target precoding matrix W based on the two indications, which is similar to the manner in which the target precoding matrix W is determined in the example of the first possible implementation.
  • the target precoding matrix W is the first selected for the first matrix due to the definition of the values of the elements of a 1 , a 2 ... a N in the first matrix.
  • the precoding matrix corresponding to the antenna port group thereby reducing the problem of beam accuracy degradation caused by the difference between the antenna port groups, so that the access network device utilizes the target precoding for a first antenna port group
  • the matrix W performs downlink data processing, its beam directivity is clear, and excessive beam side lobes are not generated.
  • the structure of the target precoding matrix W can be split into a two-level matrix, and can also be split into a three-level matrix. See the following possible implementation manners. Taking the target precoding matrix as a two-level matrix as an example, the structure of the three-level matrix can be seen in the following embodiments:
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the multiple antenna port groups, where the first matrix is used to represent the multiple antenna port groups
  • the difference parameter between the corresponding wireless channels refers to the phase difference between the wireless channels corresponding to the plurality of antenna port groups characterized by the first matrix.
  • the first matrix is
  • the second matrix is Target precoding matrix Wherein said Indicates the length is a matrix, the k being equal to any one of j 1 , j 2 ...
  • the S being less than or equal to N
  • the N being the number of antenna port groups on the access network device
  • M is the number of antenna ports in each antenna port group
  • a phase difference between two polarized antennas on the access network device Equal to any one of ⁇ +1, -1, +j, -j ⁇
  • the X a number of quantization bits equal to ⁇ , the l being determined according to the first PMI, the j 1 , j 2 ... j N being determined according to the second PMI.
  • the access network device has a total of N antenna port groups, and the access network device instructs the terminal to select S antenna port groups for channel measurement (S is less than or equal to N), and therefore, the target determined by the terminal
  • the precoding matrix W is a matrix determined based on reference signals transmitted by the S antenna port groups.
  • Target precoding matrix Can be split into two levels of matrix, respectively the first matrix And second matrix It can be known from the structure of the first matrix that the first matrix represents the phase difference between the radio channels corresponding to the antenna ports of the S antenna port groups, that is, the target precoding matrix W determined in this embodiment is based on the phase.
  • the difference can be corrected by the beam corresponding to the S antenna port groups, avoiding excessive side lobes, increasing the beam shaping gain, and thereby increasing the capacity of the antenna.
  • the value of the first PMI determines a value of l
  • the value of l determines a value of ⁇
  • the value of the second PMI determines a value of j 1 , j 2 ... j N
  • the first PMI may include multiple values
  • the second PMI may also include multiple values.
  • W 2 is a second matrix
  • W 1 is a first matrix.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of l is determined by the first PMI.
  • the first PMI may be a wideband PMI or a subband PMI.
  • W 2 is indicated by the second PMI, ie j 1 and j 2 and The value may be determined by the second PMI, j 1 may be equal to j 2 or may not be equal to j 2 , and the second PMI may be a sub-band PMI.
  • ⁇ in W 1 can also be scalar quantized (for example, quantizing ⁇ with X values), and carried as a modulation symbol on the PUSCH and fed back to the access network device with the routing terminal.
  • the corresponding codebook structure may be shown in Table 2.
  • the codebook structure shown in Table 2 is a new codebook provided by the present application.
  • target precoding matrix The corresponding first PMI is i 1
  • the corresponding second PMI is i 2,1 , i 2,2 , i 2,3 . That is, in this example, the first PMI, i 1 , takes any value of 0, 1 , 2, 3, and the second PMI includes three values, namely i 2,1 , i 2,2 ,i Phase difference between 2,3 and i 2,3 and two polarized antennas on the access network device correspond.
  • the value of i 1 is equal to 1
  • the value of l determines the value of ⁇ , i 2 , 1 is equal to j 1
  • i 2 , 2 is equal to j 2 .
  • the value of the above i 1 may be ⁇ 0, 1, 2, 3 ⁇ , which mainly depends on the number of quantization bits X of ⁇ , and the maximum value of i 1 is smaller than X;
  • the value of the above i 2, 3 may be Is ⁇ 0,1,2,3 ⁇ , which depends mainly on The quantization bit;
  • the value of the above i 2,1 , i 2,2 may be ⁇ 0, 1 ⁇ , which mainly depends on the number of antenna ports in one polarization direction.
  • the terminal device determines that the first PMI i 1 of the target precoding matrix W is equal to 1, and the second PMI of the target precoding matrix W is i 2, 1 is equal to 0, i 2 , 2 Equal to 1, i 2 , 3 equals
  • the beam corresponding to the S antenna port groups may be corrected based on the phase difference.
  • the beam shaping gain is increased, thereby increasing the capacity of the antenna.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the plurality of antenna port groups, where the first matrix is used to represent the multiple antenna port groups The phase difference between the corresponding wireless channels, the first matrix is The second matrix is Target precoding matrix Wherein said Indicates the length is a matrix, the k being equal to any one of j 1 , j 2 ...
  • the S being less than or equal to N
  • the N being the number of antenna port groups on the access network device
  • M is the number of antenna ports in each antenna port group
  • a phase difference between two polarized antennas on the access network device Equal to any one of ⁇ +1, -1, +j, -j ⁇
  • the X a number of quantization bits equal to ⁇ , the l being determined according to the first PMI, the j 1 , j 2 ... j N being determined according to the second PMI.
  • the access network device has a total of N antenna port groups, and the access network device instructs the terminal to select S antenna port groups for channel measurement (S is less than or equal to N), and therefore, the target determined by the terminal
  • the precoding matrix W is a matrix determined based on reference signals transmitted by the S antenna port groups.
  • the target precoding matrix W is the same as the target precoding matrix in the first possible implementation manner in the second scenario.
  • the target precoding matrix W is also split into a two-level matrix. Different from the first possible implementation manner described above, in the embodiment, the first matrix is The second matrix is I M denotes an identity matrix of length M ⁇ M.
  • the first matrix represents the phase difference between the radio channels corresponding to the antenna ports of the S antenna port groups, that is, the target precoding matrix W determined in this embodiment is based on the phase.
  • the difference can be corrected by the beam corresponding to the S antenna port groups, avoiding excessive side lobes, increasing the beam shaping gain, and thereby increasing the capacity of the antenna.
  • the value of the first PMI determines a value of l
  • the value of l determines a value of ⁇
  • the value of the second PMI determines a value of j 1 , j 2 ... j N
  • the first PMI may include multiple values
  • the second PMI may also include multiple values.
  • I 4 represents a 4 ⁇ 4 identity matrix
  • W 2 is a second matrix.
  • W 1 is the first matrix with The first sub-precoding matrix w corresponding to the two antenna port groups respectively.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of l is determined by the first PMI.
  • the first PMI may be a wideband PMI or a subband PMI.
  • W 2 is indicated by the second PMI, ie j 1 and j 2 and The value may be determined by the second PMI, j 1 may be equal to j 2 or may not be equal to j 2 , and the second PMI is a sub-band PMI.
  • ⁇ in W 1 can also be scalar quantized (for example, quantizing ⁇ with X values), and carried as a modulation symbol on the PUSCH and fed back to the access network device with the routing terminal.
  • the target precoding matrix W in this example is the codebook structure shown in Table 2 above.
  • the access network device can determine the target from the codebook structure shown in Table 2 according to the first PMI and the second PMI reported by the terminal device. Precoding matrix W.
  • the first PMI, the second PMI, and i 1 , i 2,1 , i 2 , 2 , i 2 , 3 in Table 1 refer to the first in the second scenario. A possible implementation manner will not be described herein.
  • the beam corresponding to the S antenna port groups can be corrected based on the phase difference.
  • the beam shaping gain is increased, thereby increasing the capacity of the antenna.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the multiple antenna port groups, where the first matrix is used to represent the multiple antenna port groups
  • the phase difference between the corresponding wireless channels the first matrix is The second matrix is Target precoding matrix
  • said Indicates the length is a matrix, the k is equal to j 1 , the S is less than or equal to N, the N is the number of antenna port groups on the access network device, and the M is the number of antenna ports in each antenna port group , said a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ ,
  • the X a number of quantization bits equal to ⁇ , the 1 being determined according to the first PMI, and the j 1 is corresponding according to the second
  • the target precoding matrix It is also split into a two-level matrix.
  • the first matrix is The second matrix is I M denotes an identity matrix of length M ⁇ M. It can be known from the structure of the first matrix that the first matrix represents the phase difference between the radio channels corresponding to the antenna ports of the S antenna port groups, that is, the target precoding matrix W determined in this embodiment is based on the phase. The difference can be corrected by the beam corresponding to the S antenna port groups, avoiding excessive side lobes, increasing the beam shaping gain, and thereby increasing the capacity of the antenna.
  • the value of the first PMI determines a value of l
  • the value of l determines a value of ⁇
  • the value of the second PMI determines a value of j 1 .
  • the first PMI may include multiple values.
  • the second PMI may also include multiple values.
  • W 1 is the first matrix
  • W 2 is the second matrix
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of l is determined by the first PMI.
  • the first PMI may be a wideband PMI or a subband PMI.
  • W 2 is indicated by the second PMI, ie the value of j 1 can be determined by the second PMI, which is a sub-band PMI.
  • ⁇ in W 1 can also be scalar quantized (for example, quantizing ⁇ with X values), and carried as a modulation symbol on the PUSCH and fed back to the access network device with the routing terminal.
  • the codebook structure is similar to that in Table 2.
  • the codebook structure is preset on the access network device and the terminal device, so that when the terminal device reports the first PMI and the second PMI, the access network The device can perform the target precoding matrix W based on the two indication information, which is similar to the method for determining the target precoding matrix W in the example of the first possible implementation manner in the second scenario. Let me repeat.
  • the beam corresponding to the S antenna port groups can be corrected based on the phase difference.
  • the beam shaping gain is increased, thereby increasing the capacity of the antenna.
  • the first matrix split by the target precoding matrix W is used to select the first antenna port group from the plurality of antenna port groups of the access network device, or to characterize the S antennas.
  • the phase difference between the radio channels corresponding to each antenna port group in the port group can avoid excessive side lobes of the beam corresponding to the antenna panel of the access network device, thereby improving beamforming gain and increasing the antenna. Capacity.
  • the channel state information reported by the terminal to the access network device may further include third indication information with a value of 0. Therefore, the access network device may be based on the foregoing first PMI, The second PMI and the third indication information whose value is 0, the third indication information may be a third PMI, where the third PMI is used to indicate the third matrix.
  • the target precoding matrix W is determined from the new codebook provided by the present application. That is to say, in the embodiment, the target precoding matrix W can be split into three matrices, which are respectively a product of the first matrix, the second matrix and the third matrix, and the third matrix is a unit matrix, the unit The number of rows and columns of the matrix are equal to the total number of antenna ports of the access network device.
  • the target precoding matrix W in the implementation manner is the same as the W of the two-level matrix in the first scenario, and the parameter interpretation is the same, and details are not described herein again.
  • the first matrix is The second matrix is The third matrix I MN is an identity matrix of (M ⁇ N) ⁇ (M ⁇ N).
  • a 1 a 2 may have a value of ⁇ 0, 1 ⁇ , and only one of a 1 and a 2 is 1.
  • W 2 is a second matrix, and W 1 is a first matrix. with The first sub-precoding matrix w corresponding to the two antenna port groups respectively.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of a 1
  • a 2 is determined by the first PMI.
  • the first PMI may be a wideband PMI or a sub-band PMI.
  • W 2 is indicated by the second PMI, that is, the values of j 1 and j 2 may be determined by the second PMI, and j 1 may be equal to j 2 or may not be equal to j 2 .
  • the second PMI may be a sub-band PMI.
  • the corresponding codebook structure may be shown in Table 3.
  • the codebook structure shown in Table 3 is a new codebook provided by the present application.
  • the corresponding first PMI is i 3,1 , i 3,2
  • the corresponding second PMI is i 2,1 , i 2,2 , i 2,3
  • the corresponding third indication information is i 1 . That is, in this example, the first PMI includes two values, namely i 3,1 , i 3,2
  • the second PMI includes three values, namely i 2,1 , i 2,2 , i 2,3
  • the phase difference between i 2, 3 and the two polarized antennas on the access network device correspond.
  • i 3,1 is equal to the value of the a 1 element in the first matrix
  • i 3,2 is equal to the value of the a 2 element in the first matrix
  • only one of a 1 , a 2 is 1, i 2 , 1 is equal to j 1 , i 2 , 2 is equal to j 2 .
  • the target precoding matrix W in the implementation manner is the same as the W of the two-level matrix in the first scenario, and the parameter interpretation is the same, and details are not described herein again.
  • the first matrix is The second matrix is The third matrix I MN is an identity matrix of (M ⁇ N) ⁇ (M ⁇ N).
  • a 1 a 2 may have a value of ⁇ 0, 1 ⁇ , and only one of a 1 and a 2 is 1.
  • W 2 is a second matrix, and W 1 is a first matrix.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of a 1
  • a 2 is determined by the first PMI.
  • the first PMI may be a wideband PMI or a sub-band PMI.
  • W 2 is indicated by the second PMI, that is, the values of j 1 and j 2 may be determined by the second PMI, and j 1 may be equal to j 2 or may not be equal to j 2 .
  • the second PMI may be a sub-band PMI.
  • the target precoding matrix W in the implementation manner is the same as the W of the two-level matrix in the second scenario, and the parameter interpretation is the same, and details are not described herein again.
  • the first matrix is The second matrix is
  • the third matrix I MN is an identity matrix of (M ⁇ N) ⁇ (M ⁇ N).
  • W 2 is a second matrix
  • W 1 is a first matrix.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of l is determined by the first PMI.
  • the first PMI may be a wideband PMI or a subband PMI.
  • W 2 is indicated by the second PMI, ie j 1 and j 2 and The value may be determined by the second PMI, j 1 may be equal to j 2 or may not be equal to j 2 , and the second PMI is a sub-band PMI.
  • ⁇ in W 1 can also be scalar quantized (for example, quantizing ⁇ with X values), and carried as a modulation symbol on the PUSCH and fed back to the access network device with the routing terminal.
  • the corresponding codebook structure may be shown in Table 4.
  • the codebook structure shown in Table 4 is a new codebook provided by the present application.
  • the corresponding first PMI is i 3
  • the corresponding second PMI is i 2,1 , i 2,2 , i 2,3
  • the corresponding third indication information is i 1 . That is, in this example, the first PMI, i 3 , takes any value of 0, 1, 2, 3
  • the second PMI includes three values, namely i 2,1 , i 2,2 ,i Phase difference between 2,3 and i 2,3 and two polarized antennas on the access network device Correspondingly, the value of i 1 is always zero.
  • the value of i 3 is equal to 1, and the value of l determines the value of ⁇ , i 2 , 1 is equal to j 1 , and i 2 , 2 is equal to j 2 .
  • the value of the above i 3 may be ⁇ 0, 1, 2, 3 ⁇ , which mainly depends on the number of quantization bits X of ⁇ , and the maximum value of i 3 is smaller than X;
  • the value of the above i 2, 3 may be Is ⁇ 0,1,2,3 ⁇ , which depends mainly on The quantization bit;
  • the value of the above i 2,1 , i 2,2 may be ⁇ 0, 1 ⁇ , which mainly depends on the number of antenna ports in one polarization direction.
  • the target precoding matrix W in the implementation manner is the same as the W of the two-level matrix in the second scenario, and the parameter interpretation is the same, and details are not described herein again.
  • the first matrix is The second matrix is
  • the third matrix I MN is an identity matrix of (M ⁇ N) ⁇ (M ⁇ N).
  • W 2 is a second matrix
  • W 1 is a first matrix.
  • the W 1 and W 2 are respectively indicated by independent indication information.
  • W 1 is indicated by the first PMI, that is, the value of l is determined by the first PMI.
  • the first PMI may be a wideband PMI or a subband PMI.
  • W 2 is indicated by the second PMI, ie j 1 and j 2 and The value may be determined by the second PMI, j 1 may be equal to j 2 or may not be equal to j 2 , and the second PMI is a sub-band PMI.
  • ⁇ in W 1 can also be scalar quantized (for example, quantizing ⁇ with X values), and carried as a modulation symbol on the PUSCH, and fed back to the access network device with the routing terminal, the third indication information is always equal to zero.
  • codebook structure shown in Table 4 above may also be selected, and details are not described herein again.
  • this embodiment provides a structure of another target precoding matrix W.
  • one antenna port group corresponds to one sub-precoding matrix w.
  • each polarization direction of each antenna port group corresponds to one sub-precoding matrix w, where the sub-precoding matrix is used. w is
  • the target precoding matrix W is also introduced from the above two scenarios.
  • the target precoding matrix W can be split into two levels of matrix, ie Wherein the first matrix is The second matrix is Of course, it can be split into a three-level matrix, and the split third matrix is a unit matrix.
  • the first matrix is The second matrix is Of course, it can be split into a three-level matrix, and the split third matrix is a unit matrix.
  • W corresponds to a two-level matrix of the first matrix and the second matrix
  • the first matrix is The second matrix is (a 1 , a 2 , a 3 , a 4 ) corresponds to the first PMI, that is, the value of the first PMI determines the respective values of (a 1 , a 2 , a 3 , a 4 ), (a 1 , a 2 , a 3 , a 4 ) only one is 1, the rest are 0, (k 1 , k 2 , k 3 , k 4 ) corresponds to the second PMI, ie the value of the second PMI determines (k 1 , k 2 , k 3 , k 4 ).
  • (k 1 , k 2 , k 3 , k 4 ) may be the same or different.
  • the first PMI can be a wideband PMI or a subband PMI.
  • the second PMI can be a subband PMI.
  • the corresponding codebook structure may be shown in Table 5.
  • the codebook structure shown in Table 5 is a new codebook provided by the present application.
  • target precoding matrix Corresponding first PMI is i 1,1 , i 1,2 , i 1,3 , i 1,4 , and the corresponding second PMI is i 2,1 , i 2,2 , i 2,3 , i 2, 4 . That is, in this example, the first PMI includes four values, namely i 1,1 , i 1,2 , i 1,3 , i 1,4 , and the second PMI includes four values, respectively i 2,1 , i 2 , 2 , i 2 , 3 , i 2 , 4 .
  • i 1,1 is equal to the value of the a 1 element in the first matrix
  • i 1,2 is equal to the value of the a 2 element in the first matrix
  • i 1,3 is equal to the value of the a 3 element in the first matrix
  • i 1, 4 is equal to the value of the a 4 element in the first matrix
  • i 2,1 is equal to k 1
  • i 2,2 is equal to k 2
  • i 2,3 is equal to k 3
  • i 2,2 is equal to k 4 .
  • the target precoding matrix W can be split into two levels of matrix, ie Wherein the first matrix is The second matrix is Of course, it can be split into a three-level matrix, and the split third matrix is a unit matrix.
  • the first matrix is The second matrix is Of course, it can be split into a three-level matrix, and the split third matrix is a unit matrix.
  • W corresponds to a two-level matrix of the first matrix and the second matrix
  • the first matrix is The second matrix is Corresponding to the first PMI, that is, the value of the first PMI determines
  • the respective values, (k 1 , k 2 , k 3 , k 4 ) correspond to the second PMI, that is, the value of the second PMI determines (k 1 , k 2 , k 3 , k 4 ).
  • (k 1 , k 2 , k 3 , k 4 ) may be the same or different.
  • the quantization is performed, and is carried as a modulation symbol on the PUSCH and fed back to the access network device along with the routing terminal.
  • the first PMI can be a wideband PMI or a subband PMI.
  • the second PMI can be a subband PMI.
  • the corresponding codebook structure may be shown in Table 6.
  • the codebook structure shown in Table 6 is a new codebook provided by the present application.
  • the corresponding first PMI is i 1,1 , i 1,2 , i 1,3, and the corresponding second PMI is i 2,1 , i 2,2 , i 2,3 , i 2,4 . That is, in this example, the first PMI includes three values, respectively i 1,1 , i 1,2 , i 1,3, and the second PMI includes four values, namely i 2,1 , i 2 , 2 , i 2 , 3 , i 2 , 4 .
  • i 1,1, is equal to l 1
  • the value of i 1,2, is equal to l 2
  • the value of i 1,3, is equal to l 3
  • i 2,1 is equal to k 1
  • i 2,2 is equal to k 2
  • i 2 , 3 is equal to k 3
  • i 2 , 2 is equal to k 4 .
  • this embodiment provides a structure of another target precoding matrix W.
  • the target precoding matrix W is also introduced from the above two scenarios.
  • Target precoding matrix in this scenario In the target precoding matrix W, with Is a matrix of dimensions 2 x 1, the elements of the matrix represent multiple beams on the same panel, and the elements of the matrix may contain amplitude information or phase information.
  • One of the above elements ⁇ a 1 , a 2 ... a N ⁇ is 1, and all other elements are 0 (ie, ⁇ a 1 , a 2 ... a N ⁇ is a panel selection factor), optionally, ⁇ a 1 , a 2 ... a N ⁇ can also be an amplitude factor, and the value range is a real number between 0 and 1.
  • a N ⁇ is corresponding to the first PMI, and the with Corresponding according to the second PMI.
  • the second matrix with The scalar quantization can also be performed as a modulation symbol carried on the PUSCH and fed back to the access network device.
  • the target precoding matrix can be split into two levels of matrix, ie
  • W 1 is the first matrix
  • W 2 is the second matrix
  • N is the number of antenna port groups on the access network device
  • the M is the number of antenna ports in each antenna port group
  • I M is a unit matrix of M*M.
  • the target precoding matrix can be split into a three-level matrix, that is,
  • W 1 is the first matrix
  • W 2 is the second matrix
  • W 3 is the unit matrix I M of M* M .
  • N is the number of antenna port groups on the access network device
  • the M is the number of antenna ports in each antenna port group.
  • the ⁇ a 1 , a 2 ... a N ⁇ is corresponding to the first PMI
  • I M corresponds to a third PMI that is always 0.
  • the access network device has two antenna port groups
  • the target precoding matrix is split into a two-level matrix.
  • the target precoding matrix When the target precoding matrix is split into three levels of matrix, it can be:
  • Target precoding matrix in this scenario In the target precoding matrix W, with Is a matrix of dimensions 2 x 1, the elements of the matrix represent multiple beams on the same panel, and the elements of the matrix may contain amplitude information or phase information.
  • the S is less than or equal to N, where N is the total number of antenna port packets on the access network device, and the M is the number of antenna ports in each antenna port group.
  • the second matrix with The scalar quantization can also be performed as a modulation symbol carried on the PUSCH and fed back to the access network device.
  • the target precoding matrix can be split into two levels of matrix, ie
  • W 1 is the first matrix
  • W 2 is the second matrix
  • S is the total number of partial antenna port groups selected by the access network device for the access network device, where M is the number of antenna ports in each antenna port group, and I M is a unit of M*M Array according to the first PMI, the with Corresponding according to the second PMI.
  • the target precoding matrix can be split into a three-level matrix, that is,
  • W 1 is the first matrix
  • W 2 is the second matrix
  • W 3 is a third matrix I M corresponding to the first PMI, with Corresponding to the second PMI, I M corresponds to a third PMI that is always 0.
  • the access network device has three antenna port groups
  • the target precoding matrix is split into a two-level matrix.
  • the target precoding matrix When the target precoding matrix is split into three levels of matrix, it can be:
  • the present application provides a plurality of target precoding matrices W, each of which takes into account a difference parameter between antenna port groups, or the target precoding matrix W may be for a first antenna.
  • the precoding matrix of the port group therefore, even if there are multiple antenna panels in the access network device, and the spacing of the plurality of antenna panel arrays is not uniform, the target precoding matrix W can correct the directivity of the multiple beams, thereby avoiding generation
  • the multiple side lobes increase the beamforming gain, which in turn increases the antenna capacity.
  • FIG. 3 is a schematic structural diagram of an embodiment of a terminal provided by the present application.
  • the terminal can be implemented by software, hardware, or a combination of software and hardware.
  • the terminal includes: a determining module 301 and a sending module 302.
  • the determining module 301 is configured to obtain a target precoding matrix based on a reference signal sent by the access network device by using multiple antenna port groups, and determine target indication information corresponding to the target precoding matrix according to the codebook, where the codebook And including a correspondence between a precoding matrix that is a product of a first matrix and a second matrix, where the first matrix is used to select a first antenna port from the plurality of antenna port groups a group or a parameter for characterizing a difference between the plurality of antenna port groups, the second matrix comprising a sub-precoding matrix corresponding to a part or all of the antenna port groups of the plurality of antenna port groups;
  • the sending module 302 is configured to send the target indication information to an access network device.
  • FIG. 4 is a schematic structural diagram of another embodiment of the terminal provided by the present application.
  • the terminal further includes: a first receiving module 303.
  • the first receiving module 303 is configured to receive first configuration information from the access network device before the determining module 301 obtains the target precoding matrix, where the first configuration information is used to indicate that the terminal uses The codebook.
  • FIG. 5 is a schematic structural diagram of another embodiment of the terminal provided by the present application.
  • the terminal further includes: a second receiving module 304.
  • the second receiving module 304 is configured to receive second configuration information from the access network device before the determining module 301 obtains the target precoding matrix, where the second configuration information is used to configure the codebook. parameter.
  • the second configuration information includes the number of antenna port groups and/or the number of antenna ports in the antenna port group.
  • the indication information includes a first precoding matrix indicating a PMI and a second PMI, where the first PMI is used to indicate the first matrix, and the second PMI is used to indicate the second matrix.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the multiple antenna port groups, where the first matrix is used to represent the wireless channel corresponding to the multiple antenna port groups.
  • the second matrix includes a sub-precoding matrix corresponding to each of the multiple antenna port groups of the access network device, where the first matrix is used to Selecting a first antenna port group in the antenna port group; the first matrix is The second matrix is The target precoding matrix is W, and Wherein said Indicates the length is a matrix, the k being equal to any one of j 1 , j 2 ...
  • the j N one element in the first matrix is 1, and the other elements are all 0, and the N is the access network
  • M is the number of antenna ports in each antenna port group, a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ , the ⁇ a 1 , a 2 ... a N ⁇ being determined according to the first PMI, the j 1 , j 2 . ..j N is determined according to the second PMI.
  • the terminal provided by the present application can perform the foregoing embodiment of the method for transmitting the information, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • each module of the above terminal is only a division of a logical function, and the actual implementation may be integrated into one physical entity in whole or in part, or may be physically separated.
  • these modules can all be implemented by software in the form of processing component calls; or all of them can be realized in the form of hardware; some modules can be realized by software in the form of processing component calls, and some modules are realized by hardware.
  • the determining module may be a separately set processing element, or may be integrated in a certain chip of the terminal, or may be stored in a memory of the terminal in the form of a program, and is called and executed by a processing element of the terminal. The function of the module.
  • the implementation of other modules is similar.
  • each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • each of the above receiving modules is a module for controlling reception, and the information transmitted by the base station can be received by the receiving device of the terminal, such as an antenna and a radio frequency device.
  • the above sending module is a module for controlling transmission, and can send information to the base station through a transmitting device of the terminal, such as an antenna and a radio frequency device.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital singnal processor) , DSP), or one or more Field Programmable Gate Arrays (FPGAs).
  • ASICs Application Specific Integrated Circuits
  • DSP digital singnal processor
  • FPGAs Field Programmable Gate Arrays
  • the processing component can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke the program.
  • these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 6A is a schematic structural diagram of another embodiment of a terminal provided by the present application.
  • the terminal can include a transmitter 160, a memory 161, a processor 162, and at least one communication bus 163.
  • Communication bus 163 is used to implement a communication connection between components.
  • Memory 161 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various programs may be stored for performing various processing functions and implementing the method steps of the present embodiments.
  • the terminal may further include a receiver 164.
  • the transmitter 160 may be a radio frequency module or a baseband module in the terminal, and the receiver 164 may also be a radio frequency module or a baseband module in the terminal. Wherein both transmitter 160 and receiver 164 are coupled to the processor 162.
  • the processor 162 is configured to obtain a target precoding matrix based on a reference signal sent by the access network device by using multiple antenna port groups, and determine, according to the codebook, the target precoding matrix.
  • a target indication information where the codebook includes a correspondence between a precoding matrix and a first matrix, where the precoding matrix is a product of a first matrix and a second matrix, where the first matrix is used to Selecting a first antenna port group in the port group or for characterizing a difference parameter between the plurality of antenna port groups, the second matrix including a sub-pre-corresponding to a part or all of the antenna port groups of the plurality of antenna port groups Coding matrix
  • the transmitter 160 is configured to send the target indication information to an access network device.
  • the receiver 164 is configured to receive first configuration information from the access network device, where the first configuration information is used to indicate the terminal, before the processor 162 obtains a target precoding matrix.
  • the codebook employed.
  • the receiver 164 is further configured to: before the processor 162 acquires the target precoding matrix, receive second configuration information from the access network device, where the second configuration information is used to configure the The codebook's parameters.
  • the second configuration information includes the number of antenna port groups and/or the number of antenna ports in the antenna port group.
  • the indication information includes a first precoding matrix indicating a PMI and a second PMI, where the first PMI is used to indicate the first matrix, and the second PMI is used to indicate the second matrix.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the multiple antenna port groups, where the first matrix is used to represent the wireless channel corresponding to the multiple antenna port groups.
  • the first matrix is The second matrix is The target precoding matrix is W, and Wherein said Indicates the length is a matrix, the k being equal to any one of j 1 , j 2 ...
  • the S being less than or equal to N
  • the N being the number of antenna port groups of the access network device
  • the second matrix includes a sub-precoding matrix corresponding to each of the multiple antenna port groups of the access network device, where the first matrix is used to Selecting a first antenna port group in the antenna port group; the first matrix is The second matrix is The target precoding matrix is W, and Wherein said Indicates the length is a matrix, the k being equal to any one of j 1 , j 2 ...
  • the j N one element in the first matrix is 1, and the other elements are all 0, and the N is the access network
  • M is the number of antenna ports in each antenna port group, a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ , the ⁇ a 1 , a 2 ... a N ⁇ being determined according to the first PMI, the j 1 , j 2 . ..j N is determined according to the second PMI.
  • the terminal provided by the present application can perform the foregoing embodiment of the method for transmitting the information, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 6B is a schematic structural diagram of another embodiment of a terminal provided by the present application.
  • the terminal includes: a processor 110, a memory 120, and a transceiver 130.
  • the transceiver device 130 can be connected to an antenna.
  • the transceiver 130 receives the information transmitted by the network device through the antenna, and transmits the information to the processor 110 for processing.
  • the processor 110 processes the data of the terminal and sends the data to the network device through the transceiver 130.
  • the memory 120 is used to store a program for implementing the above method embodiments, or the modules of the embodiment shown in FIG. 3 to FIG. 5, and the processor 110 calls the program to perform the operations of the foregoing method embodiments to implement the operations of the foregoing method. Each module shown.
  • part or all of the above units may be implemented by being embedded in a chip of the terminal in the form of an integrated circuit. And they can be implemented separately or integrated. That is, the above units may be configured to implement one or more integrated circuits of the above method, for example, one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital singnal processor) , DSP), or one or more Field Programmable Gate Arrays (FPGAs).
  • ASICs Application Specific Integrated Circuits
  • microprocessors digital singnal processor
  • FPGAs Field Programmable Gate Arrays
  • FIG. 7 is a schematic structural diagram of an embodiment of an access network device provided by the present application.
  • the access network device can be implemented by using software, hardware, or a combination of software and hardware.
  • the access network device sends information through multiple antenna port groups.
  • the access network device includes: a receiving module 701 and a determining module 702.
  • the receiving module 701 is configured to receive channel state information reported by the terminal, where the channel state information includes target indication information.
  • a determining module 702 configured to determine, according to the codebook, a target precoding matrix corresponding to the target indication information, where the codebook includes a correspondence between the indication information and a precoding matrix, where the precoding matrix is a first matrix and a second matrix a first matrix for selecting a first antenna port group from the plurality of antenna port groups or for characterizing a difference parameter between the plurality of antenna port groups, the second matrix comprising the A sub-precoding matrix corresponding to some or all of the antenna port groups of the plurality of antenna port groups.
  • FIG. 8 is a schematic structural diagram of another embodiment of an access network device provided by the present application.
  • the access network device further includes: a first sending module 703.
  • the first sending module 703 is configured to send first configuration information to the terminal, where the first configuration information is used to configure the terminal to use the codebook.
  • FIG. 9 is a schematic structural diagram of another embodiment of an access network device provided by the present application.
  • the access network device further includes: a second sending module 704.
  • the second sending module 704 is configured to send second configuration information to the terminal before the receiving module 701 receives channel state information reported by the terminal, where the second configuration information is used to configure parameters of the codebook. .
  • the second configuration information includes the number of antenna port groups and/or the number of antenna ports in the antenna port group.
  • the indication information includes a first precoding matrix indicating a PMI and a second PMI, where the first PMI is used to indicate the first matrix, and the second PMI is used to indicate the second matrix.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the multiple antenna port groups, where the first matrix is used to represent the wireless channel corresponding to the multiple antenna port groups.
  • the first matrix is The second matrix is The target precoding matrix is W, and Wherein said Indicates the length is a matrix, the k is equal to any one of j 1 , j 2 ...
  • the S is less than or equal to N
  • the N is the number of antenna port groups on the access network device
  • the M For the number of antenna ports in each antenna port group, a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ ,
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, where the matrix is used to Selecting a first antenna port group in the antenna port group; the first matrix is The second matrix is Target precoding matrix Wherein said Indicates the length is a matrix, the k being equal to any one of j 1 , j 2 ...
  • the N is the access network
  • M is the number of antenna ports in each antenna port group
  • a phase difference between two polarized antennas on the access network device Equal to any one of ⁇ +1, -1, +j, -j ⁇ , said ⁇ a 1 , a 2 ... a N ⁇ according to said first PMI, said j 1 , j 2 .. .j N is determined according to the second PMI.
  • An access network device provided by the present application may perform an embodiment of the foregoing method for transmitting information, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • each module of the access network device is only a division of logical functions, and may be integrated into one physical entity or physically separated in whole or in part.
  • these modules can all be implemented by software in the form of processing component calls; or all of them can be realized in the form of hardware; some modules can be realized by software in the form of processing component calls, and some modules are realized by hardware.
  • the determining module may be a separately set processing element, or may be integrated in one of the above-mentioned devices, or may be stored in the memory of the above device in the form of a program, by one of the access network devices.
  • the processing component invokes and performs the function of determining the module.
  • the implementation of other modules is similar.
  • each step of the above method or each of the above modules may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above sending module is a module for controlling transmission, and can send information to the terminal through a transmitting device of the access network device, such as an antenna and a radio frequency device.
  • the receiving module is a module for controlling receiving, and can receive information sent by the terminal through a receiving device of the access network device, such as an antenna and a radio frequency device.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital singnal processor) , DSP), or one or more Field Programmable Gate Arrays (FPGAs).
  • ASICs Application Specific Integrated Circuits
  • DSP digital singnal processor
  • FPGAs Field Programmable Gate Arrays
  • the processing component can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke the program.
  • these modules can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 10A is a schematic structural diagram of another embodiment of an access network device according to the present application.
  • the access network device sends information through multiple antenna port groups.
  • the station access network device can include a receiver 30, a memory 31, a processor 32, and at least one communication bus 33.
  • the communication bus 33 is used to implement a communication connection between components.
  • Memory 31 may include high speed RAM memory and may also include non-volatile memory NVM, such as at least one disk memory, in which various programs may be stored for performing various processing functions and implementing the method steps of the present embodiments.
  • the access network device may further include a transmitter 34.
  • the receiver 30 is configured to receive channel state information reported by the terminal, where the channel state information includes target indication information;
  • the processor 32 is configured to determine, according to the codebook, a target precoding matrix corresponding to the target indication information, where the codebook includes a correspondence between the indication information and a precoding matrix, where the precoding matrix is a first matrix and a a product of two matrices for selecting a first antenna port group from the plurality of antenna port groups or for characterizing a difference parameter between the plurality of antenna port groups, the second matrix comprising a sub-precoding matrix corresponding to a part or all of the antenna port groups of the plurality of antenna port groups.
  • the sender 34 is configured to send first configuration information to the terminal, where the first configuration information is used to configure the terminal to use the codebook.
  • the sender 34 is further configured to send second configuration information to the terminal, where the second configuration information is used to configure parameters of the codebook.
  • the second configuration information includes the number of antenna port groups and/or the number of antenna ports in the antenna port group.
  • the indication information includes a first precoding matrix indicating a PMI and a second PMI, where the first PMI is used to indicate the first matrix, and the second PMI is used to indicate the second matrix.
  • the second matrix includes a sub-precoding matrix corresponding to the S antenna port groups of the multiple antenna port groups, where the first matrix is used to represent the wireless channel corresponding to the multiple antenna port groups.
  • the first matrix is The second matrix is The target precoding matrix is W, and Wherein said Indicates the length is a matrix, the k is equal to any one of j 1 , j 2 ...
  • the S is less than or equal to N
  • the N is the number of antenna port groups on the access network device
  • the M For the number of antenna ports in each antenna port group, a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ ,
  • the second matrix includes a sub-precoding matrix corresponding to each of the plurality of antenna port groups of the access network device, where the matrix is used to Selecting a first antenna port group in the antenna port group; the first matrix is The second matrix is Target precoding matrix Wherein said Indicates the length is a matrix, the k being equal to any one of j 1 , j 2 ...
  • the j N one element in the first matrix is 1, and the other elements are all 0, and the N is the access network
  • M is the number of antenna ports in each antenna port group, a phase difference between two polarized antennas on the access network device, Equal to any one of ⁇ +1, -1, +j, -j ⁇ , the ⁇ a 1 , a 2 ... a N ⁇ being determined according to the first PMI, the j 1 , j 2 . ..j N is determined according to the second PMI.
  • An access network device provided by the present application may perform an embodiment of the foregoing method for transmitting information, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 10B is a schematic structural diagram of another embodiment of an access network device provided by the present application.
  • the access network device includes an antenna 110, a radio frequency device 120, and a baseband device 130.
  • the antenna 110 is connected to the radio frequency device 120.
  • the radio frequency device 120 receives the information transmitted by the terminal through the antenna 110, and transmits the information sent by the terminal to the baseband device 130 for processing.
  • the baseband device 130 processes the information of the terminal and sends it to the radio frequency device 120.
  • the radio frequency device 120 processes the information of the terminal and sends it to the terminal through the antenna 111.
  • the above access network device may be located in the baseband device 130.
  • the above various units are implemented in the form of a processing component scheduler, for example, the baseband device 130 includes a processing component 131 and a storage component 132, and the processing component 131 calls the storage component 132 to store The program to perform the method in the above method embodiment.
  • the baseband device 130 may further include an interface 133 for interacting with the radio frequency device 120, such as a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the above units may be one or more processing elements configured to implement the above methods, the processing elements being disposed on the baseband device 130, where the processing elements may be integrated circuits, such as: one or more ASICs, or one or more DSPs, or one or more FPGAs, etc. These integrated circuits can be integrated to form a chip.
  • the above various units may be integrated together in the form of a system-on-a-chip (SOC), for example, the baseband device 130 includes a SOC chip for implementing the above method.
  • the processing element 131 and the storage element 132 may be integrated into the chip, and the functions of the above method or the above units may be implemented by the processing element 131 in the form of a stored program that calls the storage element 132; or, at least one integrated circuit may be integrated into the chip.
  • the functions of the above methods or the above units may be implemented; or, in combination with the above implementation manners, the functions of some units are implemented in the form of processing component calling programs, and the functions of some units are implemented in the form of integrated circuits.
  • the above access network device comprises at least one processing element, a storage element and a communication interface, wherein at least one processing element is used to perform the method provided by the above method embodiments.
  • the processing element may perform some or all of the steps in the above method embodiments in a manner of executing the program stored in the storage element in the first manner; or in the second manner: through the integrated logic circuit of the hardware in the processor element Some or all of the steps in the foregoing method embodiments are performed in combination with the instructions.
  • the methods provided in the foregoing method embodiments may also be implemented in combination with the first mode and the second mode.
  • the processing elements herein are the same as described above, and may be a general purpose processor, such as a Central Processing Unit (CPU), or may be one or more integrated circuits configured to implement the above method, for example: one or more specific An Application Specific Integrated Circuit (ASIC), or one or more digital singnal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • DSPs digital singnal processors
  • FPGAs Field Programmable Gate Arrays
  • the storage element can be a memory or a collective name for a plurality of storage elements.

Landscapes

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

Abstract

La présente invention concerne un procédé et appareil de transmission d'informations. Le procédé comprend les étapes suivantes : un terminal acquiert, sur la base de signaux de référence transmis par l'intermédiaire de multiples groupes de ports d'antenne par un appareil de réseau d'accès, une matrice de précodage cible ; le terminal détermine des informations d'indication cible correspondant à la matrice de précodage cible selon un livre de codes, le livre de codes comprenant une relation de correspondance entre une matrice de précodage et des informations d'indication, la matrice de précodage est un produit d'une première matrice et d'une seconde matrice, la première matrice est destinée à sélectionner un premier groupe de ports d'antenne parmi les multiples groupes de ports d'antenne ou à représenter un paramètre de différence parmi les multiples groupes de ports d'antenne, et la seconde matrice comprend une sous-matrice de précodage correspondant à une partie ou à la totalité des multiples groupes de ports d'antenne ; et le terminal transmet les informations d'indication cibles à l'appareil de réseau d'accès. Le procédé est capable de corriger la directivité de multiples faisceaux, d'empêcher l'apparition de lobes secondaires excessifs, d'améliorer le gain de formation de faisceau, et d'augmenter davantage la capacité des antennes.
PCT/CN2018/079721 2017-03-24 2018-03-21 Procédé et appareil de transmission d'informations WO2018171604A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710184769.7A CN108631837B (zh) 2017-03-24 2017-03-24 信息的传输方法和设备
CN201710184769.7 2017-03-24

Publications (1)

Publication Number Publication Date
WO2018171604A1 true WO2018171604A1 (fr) 2018-09-27

Family

ID=63584129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/079721 WO2018171604A1 (fr) 2017-03-24 2018-03-21 Procédé et appareil de transmission d'informations

Country Status (2)

Country Link
CN (1) CN108631837B (fr)
WO (1) WO2018171604A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023169430A1 (fr) * 2022-03-08 2023-09-14 维沃移动通信有限公司 Procédé de transmission pusch, terminal, et dispositif côté réseau
WO2023206291A1 (fr) * 2022-04-28 2023-11-02 Nec Corporation Procédés, dispositifs, et support lisible par ordinateur pour communication

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111246589B (zh) * 2018-11-28 2022-04-12 华为技术有限公司 一种随机接入信号发送方法及装置
WO2020227941A1 (fr) * 2019-05-14 2020-11-19 华为技术有限公司 Procédé et appareil pour rapporter des informations d'état de canal, et dispositif associé
CN112020092B (zh) * 2019-05-31 2022-05-24 华为技术有限公司 一种信道信息获取方法及装置
WO2021109150A1 (fr) * 2019-12-06 2021-06-10 华为技术有限公司 Procédé et appareil de détermination d'informations de canaux
WO2023201623A1 (fr) * 2022-04-21 2023-10-26 Apple Inc. Mesure et rapport d'informations d'état de canal (csi) pour une communication évolutive à multiples entrées multiples sorties (mimo) sur une liaison descendante
CN117041985A (zh) * 2022-04-29 2023-11-10 华为技术有限公司 一种通信方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090080549A1 (en) * 2007-09-26 2009-03-26 Farooq Khan Efficient MIMO precoding feedback scheme
CN102308491A (zh) * 2008-12-21 2012-01-04 Lg电子株式会社 无线通信系统中的数据发送设备和方法
CN103973410A (zh) * 2013-02-01 2014-08-06 中兴通讯股份有限公司 信道信息反馈方法及装置、数据传输方法及装置
CN105264787A (zh) * 2012-12-20 2016-01-20 谷歌技术控股有限责任公司 用于天线阵列信道反馈的方法和设备
CN106130614A (zh) * 2016-07-15 2016-11-16 上海华为技术有限公司 一种低开销反馈的方法、用户设备以及基站

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101640649B (zh) * 2008-08-01 2012-11-07 上海华为技术有限公司 信道预测时确定信道预测系数的方法、装置及信道预测器
JP2017522772A (ja) * 2014-05-30 2017-08-10 ホアウェイ・テクノロジーズ・カンパニー・リミテッド チャネル状態情報ｃｓｉ報告方法及び装置、ならびに基地局アンテナ
CN105530075B (zh) * 2014-10-04 2019-05-17 上海朗帛通信技术有限公司 一种fd-mimo通信中的csi反馈方法和装置
WO2016119240A1 (fr) * 2015-01-30 2016-08-04 华为技术有限公司 Procédé de transmission, station de base, et équipement utilisateur (ue) dans un accès multiple non orthogonal
CN106487435B (zh) * 2015-08-24 2020-03-03 电信科学技术研究院 一种传输编码指示信息和确定预编码矩阵的方法和装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090080549A1 (en) * 2007-09-26 2009-03-26 Farooq Khan Efficient MIMO precoding feedback scheme
CN102308491A (zh) * 2008-12-21 2012-01-04 Lg电子株式会社 无线通信系统中的数据发送设备和方法
CN105264787A (zh) * 2012-12-20 2016-01-20 谷歌技术控股有限责任公司 用于天线阵列信道反馈的方法和设备
CN103973410A (zh) * 2013-02-01 2014-08-06 中兴通讯股份有限公司 信道信息反馈方法及装置、数据传输方法及装置
CN106130614A (zh) * 2016-07-15 2016-11-16 上海华为技术有限公司 一种低开销反馈的方法、用户设备以及基站

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL.: "UL codebook design in NR", 3GPP TSG RAN WG1 MEETING #88 R1-1701686, 17 February 2017 (2017-02-17), XP051208852 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023169430A1 (fr) * 2022-03-08 2023-09-14 维沃移动通信有限公司 Procédé de transmission pusch, terminal, et dispositif côté réseau
WO2023206291A1 (fr) * 2022-04-28 2023-11-02 Nec Corporation Procédés, dispositifs, et support lisible par ordinateur pour communication

Also Published As

Publication number Publication date
CN108631837A (zh) 2018-10-09
CN108631837B (zh) 2021-06-01

Similar Documents

Publication Publication Date Title
WO2018171604A1 (fr) Procédé et appareil de transmission d'informations
RU2695125C1 (ru) Способы и устройства для определения параметров прекодера в сети беспроводной связи
JP7403459B2 (ja) 測定報告方法、端末装置及びネットワーク装置
CN107733493B (zh) 用于确定预编码矩阵的方法和装置
RU2707735C1 (ru) Система и способ передачи информации о выборе подпространства
WO2018171727A1 (fr) Procédé pour transmettre des informations d'état de canal, dispositif terminal et dispositif de réseau
WO2017071674A1 (fr) Procédé de renvoi d'informations d'état de canal, station de base et terminal
JP6750926B2 (ja) プリコーディング行列インジケータフィードバック方法および装置
US20220263560A1 (en) Channel state information reporting method and communications apparatus
US10673508B2 (en) Channel state information feedback method, user equipment, and base station
KR20160129057A (ko) 채널 상태 정보를 보고하기 위한 방법, 사용자 장비, 및 기지국
JP7238167B2 (ja) プリコーディング行列表示及び決定方法、及び通信装置
CN111342873A (zh) 一种信道测量方法和通信装置
CN110350957B (zh) 通信的方法和通信装置
US11363585B2 (en) Method and apparatus for obtaining downlink channel information
WO2017194007A1 (fr) Procédé et dispositif de précodage en deux étapes
WO2016119655A1 (fr) Procédé et appareil de détermination d'un livre de codes
WO2021081847A1 (fr) Procédé de mesure de canal et appareil de communication
CN112312464A (zh) 上报信道状态信息的方法和通信装置
CN108282204B (zh) 通信方法、装置及系统
US11159346B2 (en) Co-polarized feedback for frequency domain compression
WO2020244496A1 (fr) Procédé de mesure de canal et appareil de communication
US20200119796A1 (en) Channel state information transmission method, access network device, and terminal device
WO2022227976A1 (fr) Procédé de communication et dispositif de communication
WO2020155116A1 (fr) Procédé de rapport de pmi et appareil de communication

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: 18771937

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: 18771937

Country of ref document: EP

Kind code of ref document: A1