WO2024007918A1 - 预编码矩阵指示、确定方法、装置、网络侧设备及终端 - Google Patents

预编码矩阵指示、确定方法、装置、网络侧设备及终端 Download PDF

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WO2024007918A1
WO2024007918A1 PCT/CN2023/103278 CN2023103278W WO2024007918A1 WO 2024007918 A1 WO2024007918 A1 WO 2024007918A1 CN 2023103278 W CN2023103278 W CN 2023103278W WO 2024007918 A1 WO2024007918 A1 WO 2024007918A1
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Prior art keywords
precoding
information
indication
precoding matrix
indication field
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PCT/CN2023/103278
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English (en)
French (fr)
Inventor
塔玛拉卡拉盖施
吴昊
刘昊
袁江伟
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维沃移动通信有限公司
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Publication of WO2024007918A1 publication Critical patent/WO2024007918A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0636Feedback format
    • H04B7/0639Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/231Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a precoding matrix indication, determination method, device, network side equipment and terminal.
  • Enhanced uplink (Uplink, UL) multiple-input multiple-output will support multiple codebooks, such as: 4-antenna codebook based on Release-15 (Release-15, Rel-15) Construct an 8-antenna codebook or a codebook based on Discrete Fourier Transform (DFT) vectors such as the Rel-15 downlink codebook.
  • the codebooks supported by different terminal capabilities are also different.
  • the terminal reports the capability to the base station to indicate the type of codebooks it supports.
  • a terminal with strong capabilities may support multiple codebooks.
  • the base station configures the one supported by the terminal through high-level signaling. Codebook.
  • the precoding matrix used by the base station to instruct the terminal to transmit uplink data is called the Transmit Precoding Matrix Indicator (TPMI).
  • TPMI Transmit Precoding Matrix Indicator
  • Embodiments of the present application provide a precoding matrix indication, determination method, device, network side equipment and terminal, which can realize the indication of TPMI and the determination of the precoding matrix used in uplink data transmission.
  • a method for determining a precoding matrix including:
  • the terminal receives the downlink control information DCI sent by the network side device, where the DCI carries indication information of the transmission precoding index TPMI;
  • the terminal determines the precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • a precoding matrix determination device which is applied to a terminal and includes:
  • the first receiving module is configured to receive downlink control information DCI sent by the network side device, where the DCI carries indication information of the transmission precoding index TPMI;
  • the first determination module is configured to determine the precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • a precoding matrix indication method including:
  • the network side device determines the indication method of the transmission precoding index TPMI in the downlink control information DCI;
  • the network side device sends DCI to the terminal according to the indication method, and the DCI carries TPMI indication information.
  • a precoding matrix indication device applied to network side equipment, including:
  • the second determination module is used to determine the indication mode of the transmission precoding index TPMI in the downlink control information DCI;
  • the first sending module is configured to send DCI to the terminal according to the indication method, where the DCI carries indication information of TPMI.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the communication interface is used to receive downlink control information DCI sent by a network side device, and the DCI carries indication information of a transmission precoding index TPMI;
  • the processor is configured to determine a precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • a network side device in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor.
  • a network side device including a processor and a communication interface, wherein the processor is used to determine the indication mode of the transmission precoding index TPMI in the downlink control information DCI; the communication interface is used to determine the indication method according to the In the above indication method, DCI is sent to the terminal, and the DCI carries TPMI indication information.
  • a ninth aspect provides a communication system, including: a terminal and a network side device.
  • the terminal can be used to perform the steps of the precoding matrix determination method as described in the first aspect.
  • the network side device can be used to perform the steps of the precoding matrix determination method as described in the first aspect. The steps of the precoding matrix indication method described in the three aspects.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. method, or implement a method as described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the first aspect or the second aspect.
  • the terminal determines the instructions for uplink data transmission based on the indication information of TPMI.
  • the precoding matrix adopted can accurately perform TPMI instructions and ensure uplink data transmission. Accurately determine the precoding matrix used to ensure accurate transmission of uplink data.
  • Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic flowchart of a method for determining a precoding matrix according to an embodiment of the present application
  • Figure 3 is a schematic flowchart of a precoding matrix indication method according to an embodiment of the present application.
  • Figure 4 is a schematic module diagram of a precoding matrix determination device according to an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • Figure 6 is a schematic module diagram of a precoding matrix indication device according to an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop Laptop Computer, also known as notebook computer, Personal Digital Assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), Mobile Internet Device , MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Devices), vehicle user equipment (VUE), pedestrian terminals (Pedestrian User Equipment) , PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (PC), teller machines or self-service machines and other terminal-side devices
  • wearable Equipment includes: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle
  • the network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless access network unit.
  • Access network equipment may include base stations, Wireless Local Area Networks (WLAN) access points or WiFi nodes, etc.
  • the base stations may be called Node B, Evolved Node B (eNB), access point, base transceiver station ( Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node, transmitting and receiving point ( Transmitting Receiving Point (TRP) or some other appropriate terminology in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only in the NR system The base station is introduced as an example, and the specific type of base station is not limited.
  • this embodiment of the present application provides a method for determining a precoding matrix, which includes:
  • Step 201 The terminal receives downlink control information (DCI) sent by the network side device.
  • DCI downlink control information
  • the DCI carries indication information of the transmission precoding index (Transmit Precoding Matrix Indicator, TPMI);
  • Step 202 The terminal determines the precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • the downlink control information DCI carrying the indication information of TPMI is instructed to the terminal through the network side device, and the precoding matrix used for uplink data transmission is determined based on the indication information of TPMI, so that the transmission can be carried out accurately.
  • the determination of the precoding matrix used in uplink data transmission ensures accurate transmission of uplink data.
  • the indication information of the TPMI is indicated through at least one precoding indication field.
  • the fourth precoding indication field for indicating phase information
  • A15 Perform at least two fifth precoding indication fields for indicating precoding matrices corresponding to different codebooks
  • the sixth precoding indication field that jointly indicates transmission rank and phase information
  • the first part of information and the second part of information are used to determine the precoding matrix in the codebook.
  • the at least one precoding indication field can be divided into the following situations.
  • the DCI usually includes a first precoding indication field that jointly indicates the transmission rank and precoding matrix.
  • Expression form 1 a second precoding indication field for indicating transmission rank and a third precoding indication field for indicating precoding matrix;
  • each ninth precoding indication field indicates a precoding matrix in the same codebook.
  • Expression form three two fifth precoding indication fields for indicating precoding matrices corresponding to different codebooks
  • Expression form four a third precoding indication field for indicating the precoding matrix and a sixth precoding indication field for jointly indicating the transmission rank and phase information.
  • Expression 5 jointly perform the first precoding indication field for indicating the transmission rank and precoding matrix and the fourth precoding indication field for indicating the phase information;
  • Expression form 6 The seventh precoding indication field indicating the first part of information of a codebook and the eighth precoding indication field of the second part of information;
  • the seventh precoding indication field indicates the first component (i_1,1) of the precoding matrix
  • the eighth precoding indication field indicates the second component (i_1,2) of the precoding matrix
  • Expression form 1 a second precoding indication field for indicating transmission rank, a third precoding indication field for indicating precoding matrix, and a fourth precoding indication field for indicating phase information;
  • Expression 2 a second precoding indication field for indicating transmission rank and at least two ninth precoding indication fields corresponding to a precoding matrix indication of the same codebook;
  • Expression form three a second precoding indication field for indicating transmission rank, and two fifth precoding indication fields for indicating precoding matrices corresponding to different codebooks;
  • Expression form four a second precoding indication field for indicating transmission rank, a seventh precoding indication field for indicating the first part of information of a codebook, and an eighth precoding indication field for indicating the second part of information.
  • the indication method is used to constrain how many precoding indication fields are carried in the DCI, and the specific content indicated by each precoding indication field. That is to say, the indication method specifically refers to at least one precoding indication field.
  • the included content that is, the indication information used by the indication method to indicate TPMI is indicated through at least one of A11 to A18; after determining the indication method of TPMI, the network side device sends DCI to the terminal according to the indication method.
  • the network side device needs to determine the indication method of TPMI in the DCI based on the codebook type corresponding to the codebook configured for the terminal, information related to the codebook, and the value of the supported transmission rank; it is required
  • the codebook types include Type I single panel codebook, Type I multi panel codebook, Type II codebook, enhanced eType II codebook, etc.
  • the information related to the codebook may include the number of antennas ( For example, the number of horizontal antennas N1, the number of vertical antennas N2), the oversampling factor of the Discrete Fourier Transform (DFT) vector (the oversampling factor O1 of the N1 dimension, the oversampling factor O2 of the N2 dimension), Codebook Subset Restriction (CBSR), etc.
  • DFT Discrete Fourier Transform
  • the network-side device can also configure first information through high-level signaling.
  • the first information is used to indicate the first set of precoding matrices that the terminal can use, so
  • the first information includes at least one of the following: codebook type, information related to the codebook, transmission rank limit, and CBSR.
  • the terminal can determine the specific precoding matrices that the terminal can use. Currently, in some cases, not all precoding matrices may be used by the terminal.
  • the network side device can send second information to the terminal through the Media Access Control Layer Control Unit (MAC CE), the second information is used to indicate the second precoding matrix set, the The second precoding matrix set is a subset of the first precoding matrix set, that is, the high-level signaling configuration is a total precoding matrix set. The range of the precoding matrix set that can be used can be further narrowed through MAC CE.
  • MAC CE Media Access Control Layer Control Unit
  • DCI indicates a precoding matrix within a small range, which can reduce the overhead of the indication domain in DCI.
  • precoding matrix 1 to precoding matrix 100 are configured through high-level signaling, and then the MAC CE is used to indicate that the specific precoding matrices that can be used are precoding matrix 50 to precoding matrix 80.
  • the final determination is made through the TPMI carried in the DCI.
  • the precoding matrix used for uplink transmission is precoding matrix 76.
  • the second information includes at least one of the following: B11, the start index and the end index of the precoding matrix; B12, at least one group of precoding matrix indications; B13, the bit map.
  • the terminal can also send capability information to the network side device.
  • the capability information includes at least one supported by the terminal for uplink transmission.
  • Codebook information may include codebook type, antenna architecture, codebook-related information, and supported transmission rank values.
  • the at least one precoding indication field includes a first precoding indication field that jointly indicates the transmission rank and precoding matrix, or the at least one precoding indication field includes a seventh precoding indication field that indicates the first part of information of a codebook. Coding indication field and the eighth precoding indication field of the second part of information
  • the terminal determines the implementation method of the precoding matrix used for uplink data transmission according to the indication information of the TPMI, including:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the first mapping relationship includes:
  • the precoding matrices corresponding to the same codebook under the same transmission rank are sorted respectively, and the precoding matrices are corresponding to the TPMI according to the sorting order.
  • the transmission rank and the precoding matrix corresponding to the same codebook are uniformly sorted.
  • the values of the transmission rank are 1 and 2, and the precoding matrix includes precoding matrix 1 to precoding matrix 10.
  • this mapping method may be adopted in case one, expression form five, expression form six in case two, and expression form four in case three of the above-mentioned division of at least one precoding indication domain.
  • the at least one precoding indication field includes a third precoding indication field for indicating a precoding matrix.
  • the terminal determines the implementation method of the precoding matrix used for uplink data transmission according to the indication information of the TPMI, including:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the second mapping relationship includes the following:
  • the precoding matrices corresponding to the same codebook under each transmission rank are uniformly sorted, and the precoding matrices under different transmission ranks are mapped to TPMI respectively.
  • TPMI corresponding to precoding matrices under different transmission ranks may be the same.
  • the transmission rank and the precoding matrix are jointly sorted, and then the precoding matrix and TPMI are mapped based on the overall sorting.
  • the expression form 1 in case 2 the expression form 4, and the expression form 1 in case 3 can all adopt this mapping method.
  • the at least one precoding indication field includes at least two fifth precoding indication fields that respectively indicate precoding matrices corresponding to different codebooks.
  • the terminal determines the implementation method of the precoding matrix used for uplink data transmission according to the indication information of the TPMI, including:
  • the third expression in case two and the third expression in case three can be used to obtain the precoding matrix in this manner.
  • the transmission rank indicated by the second precoding indication field is less than or equal to at least two fifth The number of transmission layers that can be supported by the direct product operation result of the precoding matrix indicated by the precoding indication field; optionally, the precoding matrix indicated by at least two fifth precoding indication fields is Direct product operation is used to determine the precoding matrix used for uplink data transmission as follows:
  • the direct product operation result will be the same as the transmission rank indicated by the second precoding indication field.
  • Precoding vectors with the same rank and number of columns are used as the precoding matrix used for uplink data transmission.
  • the precoding vector with the same number of columns as the transmission rank indicated by the second precoding indication field is used as the precoding matrix used for uplink data transmission: :
  • N is equal to the transmission rank indicated by the second precoding indication field.
  • the at least one precoding indication field includes at least two ninth precoding indication fields corresponding to the precoding matrix indication of the same codebook.
  • two precoding matrices are respectively indicated.
  • the terminal determines the precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • Implementation methods include:
  • the transmission rank of the finally obtained precoding matrix is the product of the transmission ranks corresponding to at least two precoding matrices indicated by the ninth precoding indication field.
  • the above-mentioned expression form 2 in case 2 and expression form 2 in case 3 may adopt this method of determining the precoding matrix used for uplink data transmission.
  • the terminal supports the DFT-based Type I codebook, and the base station configures the DFT-based Type I codebook for the terminal.
  • the control signaling DCI contains a precoding indication field, which is jointly transmitted. Rank and precoding matrix indication.
  • the mapping relationship between TPMI and specific precoding matrix indicated by this indication field is as follows:
  • the transmission rank identifier RI
  • the precoding matrix used for upload transmission is represented by the TPMI
  • the indication field jointly indicates the RI and the TPMI.
  • the optional transmission rank values include X ⁇ r 1 , r 2 , ...
  • TPMI optional values include Y n (i n,0 is the value of the first TPMI corresponding to the value of the nth transmission rank; for example, determined based on N1, N2, O1, O2 or CBSR, etc.), then
  • TPMI is
  • the indication field jointly indicates the RI, the first TPMI (i_1) and the second TPMI (i_2).
  • the optional values of RI include X ⁇ r 1 , r 2 ,..., r
  • the above example can be further expanded to include more information, such as rank, the first component (i_1,1), the second component (i_1,2), the phase (i_2) of the precoding matrix, or the number of optional values of i_2 Depending on the value of i_1 (or i_1,1, i_1,2), it can also be used to indicate the domain in other specific application situations.
  • the terminal supports the DFT-based Type I codebook, and the base station configures the DFT-based Type I codebook for the terminal.
  • the control signaling DCI contains two precoding indication fields, one of which is used for indication.
  • the transmission rank and another indication field are used to indicate the precoding matrix corresponding to the indicated transmission rank.
  • the mapping relationship between the indication field and the specific precoding matrix is as follows:
  • Indication field used to indicate the transmission rank For example, when the maximum rank is supported is 1, this field is 0 bits, when the maximum rank is supported is 2, the field is 1 bit, when the maximum rank is supported is 4, the field is 2 bits, this field is 3 bits when the maximum supported rank is 8; or the length of the indication field is determined by the transmission rank restriction (rank restriction). For example, the maximum supported transmission rank is 8, but the base station is configured with a transmission rank restriction (rank restriction) is ⁇ 4, 5, 6, 7 ⁇ , that is to say, only transmission rank ⁇ 1, 2, 3, 8 ⁇ is supported, then the length of the indication field is 2 bits.
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 1 is:
  • TPMI index i (i 1,1 )+N 1 O 1 (i 1,2 )+N 1 O 1 N 2 O 2 (i 2 ).
  • Table 1 Precoding matrix for layer 1 CSI report using antenna ports 3000 to 2999 + Channel State Information-Reference Signal (CSI-RS) port number
  • CSI-RS Channel State Information-Reference Signal
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 2, Table 3 or Table 4 respectively is:
  • TPMI index i (i 1,1 )+N 1 O 1 (i 1,2 )+N 1 O 1 N 2 O 2 (i 2 )+2N 1 O 1 N 2 O 2 (i 3 ).
  • Table 2 Precoding matrix for layer 2 CSI report using antenna ports 3000 to 2999 + CSI-RS port number
  • Table 3 Precoding matrix for layer 3 CSI report using antenna ports 3000 to 2999 + CSI-RS port number
  • Table 4 Precoding matrix for layer 4 CSI report using antenna ports 3000 to 2999 + CSI-RS port number
  • Table 6 Mapping of i 1,3 to k 1 and k 2 reported by layer 3 CSI when the number of CSI-RS ports is less than 16
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 7 or Table 8 respectively is:
  • Table 7 Precoding matrix for layer 5 CSI report using antenna ports 3000 to 2999 + CSI-RS port number
  • Table 8 Precoding matrix for 6-layer CSI report using antenna ports 3000 to 2999 + CSI-RS port number
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 9 or Table 10 is:
  • Table 9 Precoding matrix for layer 7 CSI report using antenna ports 3000 to 2999 + CSI-RS port number
  • Table 10 Precoding matrix for 8-layer CSI report using antenna ports 3000 to 2999 + CSI-RS port number
  • TPMI index i i 1,1 *i Number of 1,2 *i Number of 2 *Number of i 3 +i 1,2 *Number of i 2 *i Number of 3 +i 2 *Number of i 3 +i 3 ;
  • i 3 represents the offset of the DFT vector corresponding to different data streams.
  • the terminal supports the DFT-based Type I codebook, and the base station configures the DFT-based Type I codebook for the terminal.
  • the control signaling DCI contains two precoding indication fields, one of which is used for
  • the precoding matrix indication carries TPMI (i.e. DFT vector index) and another indication field for phase indication.
  • TPMI i.e. DFT vector index
  • Another indication field for phase indication is as follows:
  • Indication field used to indicate the precoding matrix This indication field jointly performs transmission rank and precoding matrix indication. This situation is the same as the specific application situation 1, and will not be described again here.
  • Indication field used for phase indication used for indication of coherent combined phase information, for example: 2 bits correspond to Quadrature Phase Shift Keying (QPSK), 3 bits correspond to octal phase shift keying (8 Phase Shift Keying, 8PSK).
  • QPSK Quadrature Phase Shift Keying
  • 8PSK octal phase shift keying
  • the terminal supports the DFT-based Type I codebook, and the base station configures the DFT-based Type I codebook for the terminal.
  • the control signaling DCI contains three precoding indication fields, one of which is used for indication.
  • the transmission rank an indication field used to indicate the precoding matrix corresponding to the indicated transmission rank, and an indication field used for phase indication.
  • the mapping relationship between the indication field and the specific precoding matrix is as follows:
  • Indication field used to indicate transmission rank For example: this field is 0 bits when the maximum rank is supported is 1, 1 bit is supported when the maximum rank is 2, and this field is 1 bit when the maximum rank is supported is 4. 2 bits, this field is 3 bits when the maximum rank is 8.
  • the length of the indication field is determined by the transmission rank restriction (rank restriction). For example: the maximum supported transmission rank is 8, but the base station is configured with a transmission rank restriction (rank restriction) of ⁇ 4, 5, 6, 7 ⁇ , that is It is said that only transmission ranks ⁇ 1, 2, 3, 8 ⁇ are supported, then the length of the indication field is 2 bits.
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 1 is:
  • TPMI index i (i 1,1 )+N 1 O 1 (i 1,2 ).
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 2, Table 3 or Table 4 respectively is:
  • TPMI index i (i 1,1 )+N 1 O 1 (i 1,2 )+2N 1 O 1 N 2 O 2 (i 3 ).
  • the TPMI index indicated by the indication field indicating the precoding matrix is the precoding matrix mapping in Table 7, Table 8, Table 9 or Table 10 respectively.
  • the relationship is:
  • TPMI index i number of i1,1*i1,2*number of i3+i1,2*number of i3+i3.
  • Indication field used for phase indication indication used for coherent combined phase information, for example: 2 bits correspond to QPSK, 3 bits correspond to 8PSK.
  • the terminal supports a third codebook composed of two different codebooks, and the base station configures this codebook for the terminal for uplink transmission.
  • the control signaling DCI contains two precoding indication fields, one of which The indication field indicates the precoding matrix corresponding to the first codebook and the corresponding rank is R1.
  • the other indication field indicates the precoding matrix corresponding to the second codebook and the corresponding rank is R2.
  • Some mathematical operation is used to obtain the third The final precoding matrix corresponding to each codebook.
  • the corresponding transmission rank is the rank value corresponding to the first codebook multiplied by the rank value corresponding to the second codebook, and the indicated total rank is R1 ⁇ R2.
  • the precoding indication field used to indicate the precoding matrix under a codebook the precoding index TPMI1 corresponding to codebook one.
  • codebook one is a 2-antenna codebook in the NR Rel-15 protocol, and the maximum supported rank is 2.
  • Precoding indication field used to indicate the precoding matrix under another codebook the precoding index TPMI2 corresponding to codebook two.
  • codebook one is a 4-antenna codebook in the NR Rel-15 protocol, supporting a maximum rank of 4 .
  • the third codebook is an 8-antenna codebook.
  • the base station indicates a 2-antenna precoding matrix (TPMI1) with rank 1 in the first precoding indication field, and a 4-antenna precoding matrix (TPMI2) with rank 3 in the second indication field.
  • TPMI1 2-antenna precoding matrix
  • TPMI2 4-antenna precoding matrix
  • the final precoding matrix is a 2-antenna codebook with rank 1 and a 4-antenna codebook with rank 3, which are obtained through a direct product (kronecker) operation.
  • the terminal supports a third codebook composed of two different codebooks, and the base station configures this codebook for the terminal for uplink transmission.
  • the control signaling DCI contains three precoding indication fields, one of which The indication field is used to indicate the transmission rank.
  • One indication field indicates the precoding matrix corresponding to the first codebook, and the other indication field indicates the precoding matrix corresponding to the second codebook.
  • a certain mathematical operation is used to obtain the third codebook.
  • the corresponding final precoding matrix is used to obtain the third codebook.
  • Indication field used to indicate transmission rank indicates the total transmission rank.
  • the size of the indication field is, for example: 0 bits when the maximum rank is supported is 1, 1 bit when the maximum rank is 2, 2 bits when the maximum rank is 4, and the maximum rank is 4. In the case of rank 8, this field is 3 bits.
  • the length of the indication field is determined by the transmission rank restriction (rank restriction), for example: the maximum supported transmission rank is 8, but the base station is configured with a transmission rank restriction (rank restriction) of ⁇ 4, 5, 6, 7 ⁇ , that is It is said that only transmission ranks ⁇ 1, 2, 3, 8 ⁇ are supported, then the length of the indication field is 2 bits.
  • the precoding indication field used to indicate the precoding matrix under a codebook the precoding index TPMI1 corresponding to codebook one.
  • codebook one is a 2-antenna codebook in the NR Rel-15 protocol, and the maximum supported rank is 2.
  • the precoding indication field used to indicate the precoding matrix under another codebook the precoding index TPMI2 corresponding to codebook two.
  • codebook one is a 4-antenna codebook in the NR Rel-15 protocol, supporting a maximum rank of 4 .
  • the third codebook is an 8-antenna codebook.
  • the precoding indication field used to indicate the precoding matrix under one codebook indicates the 2-antenna precoding matrix with rank 2 (TPMI1 )
  • the precoding indication field used to indicate the precoding matrix under another codebook indicates a 4-antenna precoding matrix with rank 3 (TPMI2)
  • the final precoding matrix is a 2-antenna codebook with rank 2 and rank
  • the 4-antenna codebook with rank 3 is obtained through direct product operation, and the total precoding matrix corresponds to the codebook with rank 6.
  • (X) is a direct product.
  • the first matrix on the left side of the equation is a kroneker matrix with 4 rows and 3 columns and a matrix with 2 rows and 2 columns; the right side of the equation is a matrix with 8 rows and 6 columns. Because the rank indicated this time is 5, the first 5 columns or the last 5 columns of precoding vectors of the precoding matrix are finally taken.
  • the terminal supports the DFT-based Type I codebook, and the base station configures the DFT-based Type I codebook for the terminal.
  • the control signaling DCI contains two precoding indication fields, one of which is used for indication.
  • the precoding matrix and another indication field jointly indicate the transmission rank and the corresponding phase.
  • the mapping relationship between the indication field and the specific precoding matrix is as follows:
  • Indication field that jointly indicates the transmission rank and corresponding phase: jointly indicates the transmission rank (RI) and coherent combined phase information, for example: the supported transmission ranks are ⁇ 1, 2, 3, 4 ⁇ ; the supported coherent combined phase corresponds QPSK Then the length of the indication field is 4 bits, with a total of 16 states. Each state indicates a transmission rank and coherent combination phase combination.
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 1 is:
  • TPMI index i (i 1,1 )+N 1 O 1 (i 1,2 ).
  • the mapping relationship between the TPMI index indicated by the indication field indicating the precoding matrix and the precoding matrix in Table 2, Table 3 or Table 4 respectively is:
  • TPMI index i (i 1,1 )+N 1 O 1 (i 1,2 )+2N 1 O 1 N 2 O 2 (i 3 ).
  • the TPMI index indicated by the indication field indicating the precoding matrix is the precoding matrix mapping in Table 7, Table 8, Table 9 or Table 10 respectively.
  • the relationship is:
  • TPMI index i number of i1,1*i1,2*number of i3+i1,2*number of i3+i3.
  • this embodiment of the present application provides a precoding matrix indication method, which includes:
  • Step 301 The network side device determines the indication method of the transmission precoding index TPMI in the downlink control information DCI;
  • Step 302 The network side device sends DCI to the terminal according to the instruction method, and the DCI carries TPMI instruction information.
  • the network side device determines the indication method of the transmission precoding index TPMI in the downlink control information DCI, including:
  • the network side device determines the indication method of TPMI in the DCI according to the codebook type corresponding to the codebook configured for the terminal, information related to the codebook, and the value of the supported transmission rank.
  • the method before the network side device sends DCI to the terminal according to the instruction method, the method further includes:
  • the network side device configures first information through high-level signaling.
  • the first information is used to indicate a first precoding matrix set that the terminal can use.
  • the first information includes at least one of the following: codebook type, and the Describes codebook-related information, transmission rank restrictions, and codebook subset constraints CBSR.
  • the network side device configures the first information through high-level signaling, it also includes:
  • the network side device sends second information to the terminal through the media access control layer control unit MAC CE.
  • the second information is used to indicate a second precoding matrix set, and the second precoding matrix set is the first A subset of the precoding matrix set.
  • the second information includes at least one of the following: a start index and a stop index of the precoding matrix; at least one set of precoding matrix indications; and a bit map.
  • the indication information of the TPMI is indicated through at least one precoding indication field.
  • the at least one precoding indication field includes at least one of the following:
  • a sixth precoding indication field that jointly indicates transmission rank and phase information
  • the at least one precoding indication field includes a first precoding indication field that jointly indicates the transmission rank and precoding matrix, or the at least one precoding indication field includes a first part of information indicating a codebook.
  • the first mapping relationship between the TPMI and the precoding matrix includes:
  • the precoding matrices corresponding to the same codebook under the same transmission rank are sorted respectively, and the precoding matrices are corresponding to the TPMI according to the sorting order.
  • the second mapping relationship between the TPMI and the precoding matrix includes:
  • the precoding matrices corresponding to the same codebook under all transmission ranks are uniformly sorted, and the precoding matrices are corresponding to the TPMI in the sorting order.
  • the at least one precoding indication field includes at least two fifth precoding indication fields that respectively indicate precoding matrices corresponding to different codebooks and a second precoding indication field that indicates transmission rank.
  • the transmission rank indicated by the second precoding indication field is less than or equal to the number of transmission layers that can be supported by the direct product operation result of at least two precoding matrices indicated by the fifth precoding indication field.
  • the method also includes:
  • the network side device receives the capability information sent by the terminal
  • the capability information includes information on at least one codebook for uplink transmission supported by the terminal.
  • the TPMI indication information is sent through DCI, so that the terminal determines the precoding matrix used for uplink data transmission according to the TPMI indication information, so that the TPMI indication can be accurately performed, Ensure the accurate determination of the precoding matrix used in uplink data transmission, thereby ensuring the accurate transmission of uplink data.
  • the execution subject may be a precoding matrix determination device.
  • the precoding matrix determination method performed by the precoding matrix determination apparatus is used as an example to illustrate the precoding matrix determination apparatus provided by the embodiment of the present application.
  • the precoding matrix determination device 400 in this embodiment of the present application is applied to a terminal and includes:
  • the first receiving module 401 is configured to receive downlink control information DCI sent by the network side device, where the DCI carries indication information of the transmission precoding index TPMI;
  • the first determination module 402 is configured to determine the precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • the indication information of the TPMI is indicated through at least one precoding indication field.
  • the at least one precoding indication field includes at least one of the following:
  • a sixth precoding indication field that jointly indicates transmission rank and phase information
  • the at least one precoding indication field includes a joint transmission rank and a third precoding matrix indication.
  • a precoding indication field or the at least one precoding indication field includes a seventh precoding indication field indicating the first part of information of a codebook and an eighth precoding indication field indicating the second part of information
  • the first A determination module 402 used for:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the first mapping relationship includes:
  • the precoding matrices corresponding to the same codebook under the same transmission rank are sorted respectively, and the precoding matrices are corresponding to the TPMI according to the sorting order.
  • the first determining module 402 is configured to:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the second mapping relationship includes:
  • the precoding matrices corresponding to the same codebook under all transmission ranks are uniformly sorted, and the precoding matrices are corresponding to the TPMI in the sorting order.
  • the first determination module 402 includes:
  • the precoding matrix used for uplink data transmission is determined.
  • the precoding matrix indicated by the at least two fifth precoding indication fields is directly product operation to determine the implementation method of the precoding matrix used for uplink data transmission, including:
  • the direct product operation result will be the same as the transmission rank indicated by the second precoding indication field.
  • Precoding vectors with the same rank and number of columns are used as the precoding matrix used for uplink data transmission.
  • the precoding vector with the same number of columns as the transmission rank indicated by the second precoding indication field is used as the precoding matrix used for uplink data transmission, include:
  • N is equal to the transmission rank indicated by the second precoding indication field.
  • the device also includes:
  • the second sending module is used to send capability information to the network side device
  • the capability information includes information on at least one codebook for uplink transmission supported by the terminal.
  • the first receiving module 401 before the first receiving module 401 receives the downlink control information DCI sent by the network side device, it also includes:
  • the second receiving module is configured to receive the first information sent by the network side device through high-level signaling.
  • the first information is used to indicate the first set of precoding matrices that the terminal can use.
  • the first information includes at least the following: One item: codebook type, information related to the codebook, transmission rank restriction, codebook subset constraint CBSR.
  • the second receiving module receives the first information sent by the network side device through high-level signaling, it also includes:
  • the third receiving module is configured to receive the second information sent by the network side device through the media access control layer control unit MAC CE.
  • the second information is used to indicate a second precoding matrix set.
  • the second precoding The matrix set is a subset of the first precoding matrix set.
  • the second information includes at least one of the following:
  • the start index and end index of the precoding matrix are The start index and end index of the precoding matrix
  • this device embodiment corresponds to the above-mentioned method, and all implementation methods in the above-mentioned method embodiment are applicable to this device embodiment, and the same technical effect can be achieved.
  • the precoding matrix determination device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the precoding matrix determination device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • Embodiments of the present application also provide a terminal, including a processor and a communication interface.
  • the communication interface is used to receive downlink control information DCI sent by a network side device.
  • the DCI carries indication information of the transmission precoding index TPMI; the processor uses Determine the precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • the indication information of the TPMI is indicated through at least one precoding indication field.
  • the at least one precoding indication field includes at least one of the following:
  • a sixth precoding indication field that jointly indicates transmission rank and phase information
  • the seventh precoding indication field indicating the first part of information of a codebook and the eighth precoding indication of the second part of information In the display area, the first part of information and the second part of information are used to determine the precoding matrix in the codebook.
  • the at least one precoding indication field includes a first precoding indication field that jointly indicates the transmission rank and precoding matrix, or the at least one precoding indication field includes a first part of information indicating a codebook.
  • the processor is configured to:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the first mapping relationship includes:
  • the precoding matrices corresponding to the same codebook under the same transmission rank are sorted respectively, and the precoding matrices are corresponding to the TPMI according to the sorting order.
  • the processor is configured to:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the second mapping relationship includes:
  • the precoding matrices corresponding to the same codebook under all transmission ranks are uniformly sorted, and the precoding matrices are corresponding to the TPMI in the sorting order.
  • the processor is configured to:
  • the precoding matrix used for uplink data transmission is determined.
  • the processor is configured to:
  • the direct product operation result will be the same as the transmission rank indicated by the second precoding indication field.
  • Precoding vectors with the same rank and number of columns are used as the precoding matrix used for uplink data transmission.
  • the processor is used for:
  • N is equal to the transmission rank indicated by the second precoding indication field.
  • the communication interface is used for:
  • the capability information includes information on at least one codebook for uplink transmission supported by the terminal.
  • the communication interface is also used for:
  • Receive first information sent by the network side device through high-level signaling the first information is used to indicate a first set of precoding matrices that the terminal can use, and the first information includes at least one of the following: codebook type, Information related to the codebook, transmission rank constraints, codebook subset constraints CBSR.
  • the communication interface is also used for:
  • the second information is used to indicate a second precoding matrix set, and the second precoding matrix set is the first A subset of the precoding matrix set.
  • the second information includes at least one of the following:
  • the start index and end index of the precoding matrix are The start index and end index of the precoding matrix
  • FIG. 5 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, etc. At least some parts.
  • the terminal 500 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 510 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 5 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 504 may include a graphics processing unit (Graphics Processing Unit, GPU) 5041 and a microphone 5042.
  • the graphics processor 5041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 506 may include a display panel 5061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 507 includes a touch panel 5071 and at least one of other input devices 5072 . Touch panel 5071, also called touch screen.
  • the touch panel 5071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 5072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 501 after receiving downlink data from the network side device, the radio frequency unit 501 can transmit it to the processor 510 for processing; in addition, the radio frequency unit 501 can send uplink data to the network side device.
  • the radio frequency unit 501 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 509 may be used to store software programs or instructions as well as various data.
  • the memory 509 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • save Memory 509 may include volatile memory or nonvolatile memory, or memory 509 may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 510.
  • the radio frequency unit 501 is used for:
  • the processor 510 is configured to determine a precoding matrix used for uplink data transmission according to the indication information of the TPMI.
  • the indication information of the TPMI is indicated through at least one precoding indication field.
  • the at least one precoding indication field includes at least one of the following:
  • a sixth precoding indication field that jointly indicates transmission rank and phase information
  • the at least one precoding indication field includes a first precoding indication field that jointly indicates the transmission rank and precoding matrix, or the at least one precoding indication field includes a first part of information indicating a codebook.
  • the processor 510 is configured to:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the first mapping relationship includes:
  • the precoding matrices corresponding to the same codebook under the same transmission rank are sorted respectively, and the precoding matrices are corresponding to the TPMI according to the sorting order.
  • the processor 510 is configured to:
  • the precoding matrix used in uplink data transmission corresponding to the indication information of the TPMI
  • the second mapping relationship includes:
  • the precoding matrices corresponding to the same codebook under all transmission ranks are uniformly sorted, and the precoding matrices are corresponding to the TPMI in the sorting order.
  • the processor 510 is configured to:
  • the precoding matrix used for uplink data transmission is determined.
  • the processor is configured to:
  • the direct product operation result will be the same as the transmission rank indicated by the second precoding indication field.
  • Precoding vectors with the same rank and number of columns are used as the precoding matrix used for uplink data transmission.
  • the processor is used for:
  • N is equal to the transmission rank indicated by the second precoding indication field.
  • the radio frequency unit 501 is also used to:
  • the capability information includes information on at least one codebook for uplink transmission supported by the terminal.
  • the radio frequency unit 501 is also used to:
  • Receive first information sent by the network side device through high-level signaling the first information is used to indicate a first set of precoding matrices that the terminal can use, and the first information includes at least one of the following: codebook type, Information related to the codebook, transmission rank constraints, codebook subset constraints CBSR.
  • the radio frequency unit 501 is also used to:
  • the second information includes at least one of the following:
  • the start index and end index of the precoding matrix are The start index and end index of the precoding matrix
  • the embodiment of the present application also provides a terminal, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor.
  • a terminal including a processor, a memory, and a program or instruction stored in the memory and executable on the processor.
  • the program or instruction is executed by the processor, the above-mentioned predetermined state is realized.
  • Each process of the embodiment of the coding matrix determination method can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the computer-readable storage medium.
  • the program or instructions are executed by a processor, each process of the above-mentioned precoding matrix determination method embodiment is implemented, and can To achieve the same technical effect, to avoid repetition, we will not repeat them here.
  • the computer-readable storage medium is such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • this embodiment of the present application also provides a precoding matrix indication device 600, which is applied to network side equipment, including:
  • the second determination module 601 is used to determine the indication mode of the transmission precoding index TPMI in the downlink control information DCI;
  • the first sending module 602 is configured to send DCI to the terminal according to the indication method, where the DCI carries TPMI indication information.
  • the second determination module 601 is used to:
  • the indication mode of TPMI in the DCI is determined according to the codebook type corresponding to the codebook configured for the terminal, information related to the codebook, and the value of the supported transmission rank.
  • the device before the first sending module 602 sends DCI to the terminal according to the instruction method, the device further includes:
  • a configuration module configured to configure first information through high-level signaling.
  • the first information is used to indicate a first set of precoding matrices that the terminal can use.
  • the first information includes at least one of the following: codebook type, and the Describes codebook-related information, transmission rank restrictions, and codebook subset constraints CBSR.
  • the configuration module configures the first information through high-level signaling, it also includes:
  • the third sending module is configured to send second information to the terminal through the media access control layer control unit MAC CE, where the second information is used to indicate a second precoding matrix set, and the second precoding matrix set is the A subset of the first set of precoding matrices.
  • the second information includes at least one of the following:
  • the start index and end index of the precoding matrix are The start index and end index of the precoding matrix
  • the indication information of the TPMI is indicated through at least one precoding indication field.
  • the at least one precoding indication field includes at least one of the following:
  • a sixth precoding indication field that jointly indicates transmission rank and phase information
  • the at least one precoding indication field includes a first precoding indication field that jointly indicates the transmission rank and precoding matrix, or the at least one precoding indication field includes a first part of information indicating a codebook.
  • the first mapping relationship between the TPMI and the precoding matrix includes:
  • the precoding matrices corresponding to the same codebook under the same transmission rank are sorted respectively, and the precoding matrices are corresponding to the TPMI according to the sorting order.
  • the second mapping relationship between the TPMI and the precoding matrix includes:
  • the precoding matrices corresponding to the same codebook under all transmission ranks are uniformly sorted, and the precoding matrices are corresponding to the TPMI in the sorting order.
  • the at least one precoding indication field includes at least two fifth precoding indication fields that respectively indicate precoding matrices corresponding to different codebooks and a second precoding indication field that indicates transmission rank.
  • the transmission rank indicated by the second precoding indication field is less than or equal to the number of transmission layers that can be supported by the direct product operation result of at least two precoding matrices indicated by the fifth precoding indication field.
  • the device also includes:
  • the fourth receiving module is used to receive the capability information sent by the terminal;
  • the capability information includes information on at least one codebook for uplink transmission supported by the terminal.
  • this device embodiment is a device corresponding to the above-mentioned method. All implementation methods in the above-mentioned method embodiment are applicable to this device embodiment and can achieve the same technical effect, which will not be described again here.
  • An embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the processor is used to determine the indication mode of the transmission precoding index TPMI in the downlink control information DCI;
  • the communication interface is configured to send DCI to the terminal according to the indication method, where the DCI carries indication information of TPMI.
  • the processor is used for:
  • the indication mode of TPMI in the DCI is determined according to the codebook type corresponding to the codebook configured for the terminal, information related to the codebook, and the value of the supported transmission rank.
  • the communication interface is also used for:
  • First information is configured through high-level signaling, and the first information is used to indicate the first set of precoding matrices that the terminal can use.
  • the first information includes at least one of the following: codebook type, codebook-related Information, transmission rank constraint, codebook subset constraint CBSR.
  • the communication interface is also used for:
  • the second information is sent to the terminal through the media access control layer control unit MAC CE.
  • the second information is used to indicate a second precoding matrix set.
  • the second precoding matrix set is the first precoding matrix set. Subset.
  • the second information includes at least one of the following: a start index and a stop index of the precoding matrix; at least one set of precoding matrix indications; and a bit map.
  • the indication information of the TPMI is indicated through at least one precoding indication field.
  • the at least one precoding indication field includes at least one of the following:
  • a sixth precoding indication field that jointly indicates transmission rank and phase information
  • the at least one precoding indication field includes a first precoding indication field that jointly indicates the transmission rank and precoding matrix, or the at least one precoding indication field includes a first part of information indicating a codebook.
  • the first mapping relationship between the TPMI and the precoding matrix includes:
  • the precoding matrices corresponding to the same codebook under the same transmission rank are sorted respectively, and the precoding matrices are corresponding to the TPMI according to the sorting order.
  • the second mapping relationship between the TPMI and the precoding matrix includes:
  • the precoding matrices corresponding to the same codebook under all transmission ranks are uniformly sorted, and the precoding matrices are corresponding to the TPMI in the sorting order.
  • the at least one precoding indication field includes precoding matrix indications corresponding to different codebooks.
  • the transmission rank indicated by the second precoding indication field is less than or equal to at least two fifth precoding indications. The number of transmission layers that can be supported by the direct product operation result of the precoding matrix indicated by the field.
  • the communication interface is used for:
  • the capability information includes information on at least one codebook for uplink transmission supported by the terminal.
  • the embodiment of the present application also provides a network-side device, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor.
  • a network-side device including a processor, a memory, and a program or instruction stored in the memory and executable on the processor.
  • the program or instruction is executed by the processor, the above is implemented.
  • the precoding matrix indicates each process of the method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.
  • the embodiment of the present application also provides a network side device.
  • the network side device 700 includes: an antenna 701 , a radio frequency device 702 , a baseband device 703 , a processor 704 and a memory 705 .
  • the antenna 701 is connected to the radio frequency device 702 .
  • the radio frequency device 702 receives information through the antenna 701 and sends the received information to the baseband device 703 for processing.
  • the baseband device 703 processes the information to be sent and sends it to the radio frequency device 702.
  • the radio frequency device 702 processes the received information and then sends it out through the antenna 701.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 703, which includes a baseband processor.
  • the baseband device 703 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network-side device operations shown in the above method embodiments.
  • the network side device may also include a network interface 706, which is, for example, a common public radio interface (CPRI).
  • a network interface 706, which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 700 in this embodiment of the present invention also includes: instructions or programs stored in the memory 705 and executable on the processor 704.
  • the processor 704 calls the instructions or programs in the memory 705 to execute each of the steps shown in Figure 6. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • the program or instructions are executed by a processor, each process of the above-mentioned precoding matrix indication method embodiment is implemented, and can To achieve the same technical effect, to avoid repetition, we will not repeat them here.
  • the processor is the processor in the network side device described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • this embodiment of the present application also provides a communication device 800, which includes a processor 801 and a memory 802.
  • the memory 802 stores programs or instructions that can be run on the processor 801, for example.
  • the communication device 800 is a terminal
  • the program or instruction is executed by the processor 801
  • each step of the above-mentioned precoding matrix determination method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 800 is a network-side device
  • the program may refer to When executed by the processor 801, each step of the above-mentioned precoding matrix indication method embodiment is implemented and the same technical effect can be achieved. To avoid duplication, the details are not repeated here.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above precoding matrix determination method or
  • the precoding matrix indicates each process of the method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above precoding matrix determination method. Or the various processes of the precoding matrix indication method embodiment, and can achieve the same technical effect, so to avoid repetition, they will not be described again here.
  • Embodiments of the present application also provide a communication system, including: a terminal and a network side device.
  • the terminal can be used to perform the steps of the precoding matrix determination method as described above.
  • the network side device can be used to perform the above steps.
  • the precoding matrix indicates the steps of the method.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种预编码矩阵指示、确定方法、装置、网络侧设备及终端,属于通信技术领域,本申请实施例的预编码矩阵指示方法,包括:网络侧设备确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;所述网络侧设备根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。

Description

预编码矩阵指示、确定方法、装置、网络侧设备及终端
相关申请的交叉引用
本申请主张在2022年7月4日在中国提交的中国专利申请No.202210786968.6的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种预编码矩阵指示、确定方法、装置、网络侧设备及终端。
背景技术
增强上行链路(Uplink,UL)多输入多输出(Multiple-Input Multiple-Output,MIMO)会支持多种码本,比如:基于版本-15(Release-15,Rel-15)的4天线码本构造8天线码本或基于离散傅里叶变换(Discrete Fourier Transform,DFT)向量的码本如Rel-15下行码本。基于终端能力不同支持的码本也不同,终端向基站通过能力上报指示所支持的码本类型,能力强的终端有可能支持多种码本,基站通过高层信令为终端配置终端支持的一种码本。在UL MIMO***中为传输上行数据基站指示终端所使用的预编码矩阵,称为传输预编码索引(Transmit Precoding Matrix Indicator,TPMI)。但是现有技术中对于如何指示TPMI以及如何确定进行上行数据传输时所采用的预编码矩阵并没有明确的技术方案。
发明内容
本申请实施例提供一种预编码矩阵指示、确定方法、装置、网络侧设备及终端,能够实现TPMI的指示以及进行上行数据传输时所采用的预编码矩阵的确定。
第一方面,提供了一种预编码矩阵确定方法,包括:
终端接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;
所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
第二方面,提供了一种预编码矩阵确定装置,应用于终端,包括:
第一接收模块,用于接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;
第一确定模块,用于根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
第三方面,提供了一种预编码矩阵指示方法,包括:
网络侧设备确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;
所述网络侧设备根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。
第四方面,提供了一种预编码矩阵指示装置,应用于网络侧设备,包括:
第二确定模块,用于确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;
第一发送模块,用于根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。
第五方面,提供了一种终端,该终端包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面,提供了一种终端,包括处理器及通信接口,其中,所述通信接口用于接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;所述处理器用于根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
第七方面,提供了一种网络侧设备,该网络侧设备包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第八方面,提供了一种网络侧设备,包括处理器及通信接口,其中,所述处理器用于确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;所述通信接口用于根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。
第九方面,提供了一种通信***,包括:终端及网络侧设备,所述终端可用于执行如第一方面所述的预编码矩阵确定方法的步骤,所述网络侧设备可用于执行如第三方面所述的预编码矩阵指示方法的步骤。
第十方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤,或者实现如第三方面所述的方法的步骤。
第十一方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的方法,或实现如第三方面所述的方法。
第十二方面,提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面或第三方面所述的方法的步骤。
在本申请实施例中,通过先确定DCI中的TPMI的指示方式,然后基于该指示方式通过DCI进行TPMI的指示信息的发送,使得终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵,以此能够准确进行TPMI的指示,保证上行数据传输 时所采用的预编码矩阵的准确确定,进而保证上行数据的准确传输。
附图说明
图1是本申请实施例可应用的一种无线通信***的框图;
图2是本申请实施例的预编码矩阵确定方法的流程示意图;
图3是本申请实施例的预编码矩阵指示方法的流程示意图;
图4是本申请实施例的预编码矩阵确定装置的模块示意图;
图5是本申请实施例的终端的结构示意图;
图6是本申请实施例的预编码矩阵指示装置的模块示意图;
图7是本申请实施例的网络侧设备的结构示意图;
图8是本申请实施例的通信设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)***,还可用于其他无线通信***,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access,SC-FDMA)和其他***。本申请实施例中的术语“***”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的***和无线电技术,也可用于其他***和无线电技术。以下描述出于示例目的描述了新空口(New Radio,NR)***,并且在以下大部分描述中使用NR术语,但是这些技术也可应用于NR***应用以外的应用,如第6代(6th Generation,6G)通信***。
图1示出本申请实施例可应用的一种无线通信***的框图。无线通信***包括终端11和网络侧设备12。其中,终端11可以是手机、平板电脑(Tablet Personal Computer)、膝 上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、增强现实(augmented reality,AR)/虚拟现实(virtual reality,VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(Vehicle User Equipment,VUE)、行人终端(Pedestrian User Equipment,PUE)、智能家居(具有无线通信功能的家居设备,如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer,PC)、柜员机或者自助机等终端侧设备,可穿戴式设备包括:智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是,在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备,其中,接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、无线局域网(Wireless Local Area Networks,WLAN)接入点或WiFi节点等,基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point,TRP)或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR***中的基站为例进行介绍,并不限定基站的具体类型。
下面结合附图,通过一些实施例及其应用场景对本申请实施例提供的预编码矩阵指示、确定方法、装置、网络侧设备及终端进行详细地说明。
如图2所示,本申请实施例提供一种预编码矩阵确定方法,包括:
步骤201,终端接收网络侧设备发送的下行控制信息(Downlink Control Information,DCI),所述DCI中携带传输预编码索引(Transmit Precoding Matrix Indicator,TPMI)的指示信息;
步骤202,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
需要说明的是,通过网络侧设备向终端指示携带TPMI的指示信息的下行控制信息DCI,并根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵,以此能够准确进行上行数据传输时所采用的预编码矩阵的确定,保证上行数据的准确传输。
可选地,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
进一步需要说明的是,该至少一个预编码指示域包括以下至少一项:
A11、联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
A12、进行传输秩指示的第二预编码指示域;
A13、进行预编码矩阵指示的第三预编码指示域;
A14、进行相位信息指示的第四预编码指示域;
A15、分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
A16、联合进行传输秩以及相位信息指示的第六预编码指示域;
A17、指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵
A18、对应同一个码本的预编码矩阵指示的至少两个第九预编码指示域。
需要说明的是,该至少一个预编码指示域可以分为如下情况。
情况一、DCI中仅包括一个预编码指示域
在此种情况下,该DCI中通常包括的是联合进行传输秩以及预编码矩阵指示的第一预编码指示域。
情况二、DCI中包括两个预编码指示域
可选地,此种情况下,又可分为如下几种表现形式:
表现形式一、进行传输秩指示的第二预编码指示域和进行预编码矩阵指示的第三预编码指示域;
表现形式二、对应同一个码本的预编码矩阵指示的两个第九预编码指示域;
例如,此种情况下,每个第九预编码指示域分别指示同一个码本中的预编码矩阵。
表现形式三、分别进行不同码本对应的预编码矩阵指示的两个第五预编码指示域;
表现形式四、进行预编码矩阵指示的第三预编码指示域和联合进行传输秩以及相位信息指示的第六预编码指示域。
表现形式五、联合进行传输秩以及预编码矩阵指示的第一预编码指示域和进行相位信息指示的第四预编码指示域;
表现形式六、指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域;
例如,该第七预编码指示域指示预编码矩阵的第一分量(i_1,1)、第八预编码指示域指示预编码矩阵的第二分量(i_1,2)。
情况三、DCI中包括三个预编码指示域
可选地,此种情况下,又可分为如下几种表现形式:
表现形式一、进行传输秩指示的第二预编码指示域、进行预编码矩阵指示的第三预编码指示域和进行相位信息指示的第四预编码指示域;
表现形式二、进行传输秩指示的第二预编码指示域和对应同一个码本的预编码矩阵指示的至少两个第九预编码指示域;
表现形式三、进行传输秩指示的第二预编码指示域、分别进行不同码本对应的预编码矩阵指示的两个第五预编码指示域;
表现形式四、进行传输秩指示的第二预编码指示域、指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域。
这里需要说明的是,网络侧设备在进行DCI发送之前,需要先确定DCI中的TPMI 的指示方式,该指示方式用于约束DCI中携带几个预编码指示域,以及每个预编码指示域所指示的具体内容,也就是说,该指示方式具体指的是至少一个预编码指示域所包含的内容,即该指示方式用于指示TPMI的指示信息通过A11至A18中的至少一项进行指示;在确定TPMI的指示方式后,网络侧设备便根据该指示方式向终端发送DCI。进一步地,网络侧设备需要根据为所述终端配置的码本对应的码本类型、与所述码本相关的信息以及所支持的传输秩的取值来确定DCI中的TPMI的指示方式;需要说明的是,该码本类型包括Type I single panel码本,Type I multi panel码本,Type II码本,增强eType II码本等;该与所述码本相关的信息可以包括天线个数(例如,横向的天线数N1、纵向的天线数N2)、离散傅里叶变换(Discrete Fourier Transform,DFT)向量的过采样因子(N1维度的过采样因子O1、N2维度的过采样因子O2)、码本子集约束(Codebook Subset Restriction,CBSR)等。
还需要说明的是,在终端与网络侧设备传输DCI之前,网络侧设备还可以通过高层信令配置第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、CBSR。
需要说明的是,当终端获取到高层信令配置的第一信息后,便能确定终端能够使用的预编码矩阵具体有哪些,当前可能在某一些情况下并不是所有的预编码矩阵终端均能使用,此时网络侧设备可以通过媒体接入控制层控制单元(Media Access Control Control Element,MAC CE)向终端发送第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集,即高层信令配置的为一个总的预编码矩阵集合,通过MAC CE可以进一步缩小能够使用的预编码矩阵集合的范围,进而DCI所指示的是小范围内的预编码矩阵,以此能够缩小DCI中指示域的开销。例如,通过高层信令配置了预编码矩阵1至预编码矩阵100,然后通过MAC CE指示具体可以使用的预编码矩阵为预编码矩阵50至预编码矩阵80,最后通过DCI中携带的TPMI确定最终进行上行传输所使用的预编码矩阵为预编码矩阵76。
进一步地,该第二信息中包括以下至少一项:B11、预编码矩阵的起始索引和终止索引;B12、至少一组预编码矩阵指示;B13、比特位图。
可选地,为了保证网络侧设备能够准确的为终端配置能够使用的预编码矩阵,终端还可以向网络侧设备发送能力信息,该能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。可选地,该码本的信息可以包括码本类型、天线架构、与码本相关的信息以及所支持的传输秩的取值。
下面分别对根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵的具体实现方式进行说明如下。
情况一、所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域
可选地,在此种情况下,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵的实现方式,包括:
根据所述TPMI与预编码矩阵的第一映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第一映射关系包括:
根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
也就是说,此种情况下是将传输秩与同一码本对应的预编码矩阵进行统一排序,例如,传输秩的取值为1和2,预编码矩阵包括预编码矩阵1至预编码矩阵10;则进行排序时需要先排传输秩为1的情况下对应的10个预编码矩阵,然后再排传输秩为2的情况下对应的10个预编码矩阵,然后基于整体的排序进行预编码矩阵与TPMI的映射。
可选地,上述的至少一个预编码指示域的划分中的情况一、情况二中的表现形式五、表现形式六以及情况三中的表现形式四均可采用此种映射方式。
情况二、所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域
可选地,在此种情况下,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵的实现方式,包括:
根据所述TPMI与预编码矩阵的第二映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第二映射关系包括以下一项:
C11、对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;
需要说明的是,此种情况下是对每一个传输秩下的同一码本对应的预编码矩阵进行统一排序,不同传输秩下的预编码矩阵与TPMI分别进行映射,可选地,此种情况下,不同的传输秩下的预编码矩阵所对应的TPMI可以是相同的。
C12、将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应;
需要说明的是,此种情况下是将传输秩与预编码矩阵联合进行排序,然后基于整体的排序进行预编码矩阵与TPMI的映射。
可选地,上述的至少一个预编码指示域的划分中的情况二中的表现形式一、表现形式四、情况三中的表现形式一均可采用此种映射方式。
情况三、所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域
可选地,在此种情况下,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵的实现方式,包括:
通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行 数据传输时所采用的预编码矩阵。
可选地,上述的至少一个预编码指示域的划分中的情况二中的表现形式三、情况三中的表现形式三均可采用此种方式进行预编码矩阵获取。
进一步地,在所述至少一个预编码指示域还包括进行传输秩指示的第二预编码指示域的情况下,所述第二预编码指示域所指示的传输秩小于或等于至少两个第五预编码指示域所指示的预编码矩阵进行直积运算的直积运算结果能支持的传输层数;可选地,所述通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵的实现方式为:
在所述第二预编码指示域所指示的传输秩小于直积运算结果能支持的传输层数的情况下,在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵。
可选地,该在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵的实现方式为:
将所述直积预算结果中排在最前面或最后面的N列的预编码向量作为进行上行数据传输时所采用的预编码矩阵;
其中,N等于所述第二预编码指示域所指示的传输秩。
情况四、所述至少一个预编码指示域包括对应同一个码本的预编码矩阵指示的至少两个第九预编码指示域
可选地,此种情况下四分别指示两个预编码矩阵,具体的,在此种情况下,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵的实现方式,包括:
将对应同一个码本的预编码矩阵指示的至少两个第九预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵。
此种情况下,最终得到的预编码矩阵的传输秩为至少两个第九预编码指示域所指示的预编码矩阵对应的传输秩的乘积。
可选地,上述的情况二中的表现形式二、情况三中的表现形式二均可采用此种确定进行上行数据传输时所采用的预编码矩阵的方式。
下面以终端与基站通信为例,对本申请的具体应用进行详细说明如下。
具体应用情况一、终端支持基于DFT的Type I码本,而且基站为该终端配置了基于DFT的Type I码本,控制信令DCI中包含一个预编码指示域,该预编码指示域联合进行传输秩以及预编码矩阵指示,该指示域所指示的TPMI和具体预编码矩阵映射关系为如下:
需要说明的是,因传输秩的取值通常用传输秩标识(RI)来表示,而上传传输所使用的预编码矩阵用TPMI来表示则,也就是说,该指示域联合指示RI以及TPMI。可选传输秩的取值包括X个{r1,r2,…,rX}(例如根据Maxrank或者RI restriction等确定),rank为rn(rn为第n个传输秩的取值)时TPMI可选的值包括Yn(in,0为第n个传输秩的取值下对应的第一个TPMI的取值;例如,根据N1、N2、O1、O2或CBSR等确定),那 指示域指示的值i(i取值为0到)映射为其中n0满足 (其中Y0=0),或者n0为满足的最大正整数,TPMI为
该指示域联合指示RI、第一TPMI(i_1)和第二TPMI(i_2)。RI可选的值rank包括X个{r1,r2,…,rX}(例如根据MaxRank或者RI restriction等确定),rank为rn时,i_1可选的值包括i_2可选的值包括那么指示域指示i(i取值为0到)映射为其中n0满足(其中Y0=0,Z0=0),或者n0为满足的最大正整数,i_1为i_2为其中或者调换i_1和i_2的映射顺序,i_2为i_1为
上述例子中,如果RI可选取值编号为{r0,r1,…,rZ-1},那么上述求和公式中j的取值从-1开始,且定义Y-1=0,Z-1=0。
上述例子可以进一步扩展为更多信息,例如包括rank、预编码矩阵的第一分量(i_1,1)、第二分量(i_1,2)、相位(i_2),或者i_2的可选取值个数取决于i_1(或i_1,1、i_1,2)的取值的情况,也可用于其他具体应用情况中指示域。
具体应用情况二、终端支持基于DFT的Type I码本,而且基站为该终端配置了基于DFT的Type I码本,控制信令DCI中包含两个预编码指示域,其中一个指示域用于指示传输秩、另一个指示域用于指示与所指示的传输秩对应的预编码矩阵,该指示域和具体预编码矩阵映射关系为如下:
用于指示传输秩的指示域:比如支持最大秩为1的情况下该域为0比特,支持最大秩为2的情况下该域为1比特,支持最大秩为4的情况下该域为2比特,支持最大秩为8的情况下该域为3比特;或者该指示域长度由传输秩限制(rank restriction)来确定,比如最大支持的传输秩为8、但基站配置了传输秩限制(rank restriction)为{4,5,6,7},也就是说只支持传输秩{1,2,3,8}那么该指示域长度为2比特。
用于指示预编码矩阵的指示域:
映射方式一、不同传输秩对应的预编码矩阵分别进行编号,下面例子中比如rank=1下先排i1,1再排i1,2再排i2再排i3。当然面前提到的排序顺序仅仅为一种示例,也可以换一种顺序排序。
当指示传输秩的指示域指示传输秩rank=1,指示预编码矩阵的指示域所指示的TPMI索引和表1中的预编码矩阵映射关系为:
TPMI索引i=(i1,1)+N1O1(i1,2)+N1O1N2O2(i2)。
表1使用天线端口3000至2999+信道状态信息参考信号(Channel State Information-Reference Signal,CSI-RS)端口数的1层CSI报告的预编码矩阵

当指示传输秩的指示域指示传输秩rank=2、3或4,指示预编码矩阵的指示域所指示的TPMI索引分别与表2、表3或表4中的预编码矩阵映射关系为:
TPMI索引i=(i1,1)+N1O1(i1,2)+N1O1N2O2(i2)+2N1O1N2O2(i3)。
表2使用天线端口3000至2999+CSI-RS端口数的2层CSI报告的预编码矩阵
表3使用天线端口3000至2999+CSI-RS端口数的3层CSI报告的预编码矩阵
表4使用天线端口3000至2999+CSI-RS端口数的4层CSI报告的预编码矩阵
表5 3层CSI报告的i1,3至k1和k2的映射

表6当CSI-RS端口数小于16时3层CSI报告的i1,3至k1和k2的映射
当指示传输秩的指示域指示传输秩rank=5或6,指示预编码矩阵的指示域所指示的TPMI索引分别与表7或表8中的预编码矩阵映射关系为:
当N1=4,N2=1时,TPMI索引i=(i1,1)+N1O1(i2);
当N1=2,N2=2时,TPMI索引i=(i1,1)+N1O1(i1,2)+N1O1N2O2(i2)。
表7使用天线端口3000至2999+CSI-RS端口数的5层CSI报告的预编码矩阵
表8使用天线端口3000至2999+CSI-RS端口数的6层CSI报告的预编码矩阵
当指示传输秩的指示域指示传输rank=7或8,指示预编码矩阵的指示域所指示的TPMI索引分别与表9或表10中的预编码矩阵映射关系为:
当N1=4,N2=1时,TPMI索引
当N1=2,N2=2时,TPMI索引i=(i1,1)+N1O1(i1,2)+N1O1N2O2(i2)。
表9使用天线端口3000至2999+CSI-RS端口数的7层CSI报告的预编码矩阵

表10使用天线端口3000至2999+CSI-RS端口数的8层CSI报告的预编码矩阵
映射方式二、所有rank对应的TPMI索引统一进行编号
TPMI索引i=i1,1*i1,2的数量*i2的数量*i3的数量+i1,2*i2的数量*i3的数量+i2*i3的数量+i3
其中,i3表示不同数据流对应的DFT向量的偏移量。
具体应用情况三、终端支持基于DFT的Type I码本,而且基站为该终端配置了基于DFT的Type I码本,控制信令DCI中包含两个预编码指示域,其中一个指示域用于进行预编码矩阵指示,即携带TPMI(即DFT向量索引)、另一个指示域用于进行相位指示,该指示域和具体预编码矩阵映射关系为如下:
用于指示预编码矩阵的指示域:该指示域联合进行传输秩以及预编码矩阵指示,此情况与具体应用情况一相同,在此不再赘述。
用于进行相位指示的指示域:用于进行相干合并相位信息的指示,比如:2比特对应正交相移键控(Quadrature Phase Shift Keying,QPSK),3比特对应八进制移相键控(8 Phase Shift Keying,8PSK)。
具体应用情况四、终端支持基于DFT的Type I码本,而且基站为该终端配置了基于DFT的Type I码本,控制信令DCI中包含三个预编码指示域,其中一个指示域用于指示传输秩、一个指示域用于指示与所指示的传输秩对应的预编码矩阵、一个指示域用于进行相位指示,该指示域和具体预编码矩阵映射关系为如下:
用于指示传输秩的指示域:比如:支持最大秩为1的情况下该域为0比特,支持最大秩为2的情况下该域为1比特,支持最大秩为4的情况下该域为2比特,支持最大秩为8的情况下该域为3比特。或者该指示域长度由传输秩限制(rank restriction)来确定,比如:最大支持的传输秩为8、但基站配置了传输秩限制(rank restriction)为{4,5,6,7},也就是说只支持传输秩{1,2,3,8}那么该指示域长度为2比特。
用于指示预编码矩阵的指示域:
映射方式一、不同传输秩对应的预编码矩阵分别进行编号,下面例子中比如rank=1下先排i1,1再排i1,2再排i3。当然面前提到的排序顺序仅仅为一种示例,也可以换一种顺序排序。
当指示传输秩的指示域指示传输秩rank=1,指示预编码矩阵的指示域所指示的TPMI索引和表1中的预编码矩阵映射关系为:
TPMI索引i=(i1,1)+N1O1(i1,2)。
当指示传输秩的指示域指示传输秩rank=2、3或4,指示预编码矩阵的指示域所指示的TPMI索引分别与表2、表3或表4中的预编码矩阵映射关系为:
TPMI索引i=(i1,1)+N1O1(i1,2)+2N1O1N2O2(i3)。
当指示传输秩的指示域指示传输秩rank=5、6、7或8,指示预编码矩阵的指示域所指示的TPMI索引分别表7、表8、表9或表10中的预编码矩阵映射关系为:
当N1=4,N2=1时,TPMI索引i=(i1,1);
当N1=2,N2=2时,TPMI索引i=(i1,1)+N1O1(i1,2)。
映射方式二、所有rank对应的TPMI索引统一进行编号
TPMI索引i=i1,1*i1,2的数量*i3的数量+i1,2*i3的数量+i3。
用于进行相位指示的指示域:用于进行相干合并相位信息的指示,比如:2比特对应QPSK,3比特对应8PSK。
具体应用情况五、终端支持由两个不同的码本构成第三个码本,而且基站为终端配置了此码本用于上行传输,控制信令DCI中包含两个预编码指示域,其中一个指示域指示第一个码本对应的预编码矩阵而且对应的秩为R1、另一个指示域指示第二个码本对应的预编码矩阵而且对应的秩为R2,采用某种数学运算获得第三个码本对应的最终预编码矩阵。所对应的传输秩为第一个码本对应的秩值乘以第二个码本对应的秩值,所指示总秩为R1 ×R2。
用于指示一个码本下的预编码矩阵的预编码指示域:码本一对应的预编码索引TPMI1,比如:码本一为NR Rel-15协议里2天线码本,支持最大秩为2。
用于指示另一个码本下的预编码矩阵的预编码指示域:码本二对应的预编码索引TPMI2,比如:码本一为NR Rel-15协议里4天线码本,支持最大秩为4。
第三个码本为8天线码本,由2天线码本和4天线码本通过数学运算获得最终的8天线预编码信息;最大传输秩为2×4=8。比如:基站在第一预编码指示域中指示了秩为1的2天线预编码矩阵(TPMI1),第二指示域中指示了秩为3的4天线预编码矩阵(TPMI2),那么总的传输秩为3、最终预编码矩阵为秩为1的2天线码本和秩为3的4天线码本通过直积(kronecker)运算获得。这种预编码指示方法下某些传输秩无法支持,比如秩值=5和7。
具体应用情况六、终端支持由两个不同的码本构成第三个码本,而且基站为终端配置了此码本用于上行传输,控制信令DCI中包含三个预编码指示域,其中一个指示域用于指示传输秩,一个指示域指示第一个码本对应的预编码矩阵、另一个指示域指示第二个码本对应的预编码矩阵,采用某种数学运算获得第三个码本对应的最终预编码矩阵。用于指示传输秩的指示域所指示的秩值小于或等于的所对应的传输秩为第一个码本对应的秩值乘以第二个码本对应的秩值,R<=R1×R2。
用于指示传输秩的指示域:指示总的传输秩。该指示域大小比如:支持最大秩为1的情况下该域为0比特,支持最大秩为2的情况下该域为1比特,支持最大秩为4的情况下该域为2比特,支持最大秩为8的情况下该域为3比特。或者该指示域长度由传输秩限制(rank restriction)来确定,比如:最大支持的传输秩为8、但基站配置了传输秩限制(rank restriction)为{4,5,6,7},也就是说只支持传输秩{1,2,3,8}那么该指示域长度为2比特。
用于指示一个码本下的预编码矩阵的预编码指示域:码本一对应的预编码索引TPMI1,比如:码本一为NR Rel-15协议里2天线码本,支持最大秩为2。
用于指示另一个码本下的预编码矩阵的预编码指示域:码本二对应的预编码索引TPMI2,比如:码本一为NR Rel-15协议里4天线码本,支持最大秩为4。
第三个码本为8天线码本,由2天线码本和4天线码本通过数学运算获得最终的8天线预编码信息;最大传输秩为2×4=8。比如:基站在用于指示传输秩的指示域中指示了秩值=5、用于指示一个码本下的预编码矩阵的预编码指示域中指示了秩为2的2天线预编码矩阵(TPMI1),用于指示另一个码本下的预编码矩阵的预编码指示域中指示了秩为3的4天线预编码矩阵(TPMI2),最终预编码矩阵为秩为2的2天线码本和秩为3的4天线码本通过直积运算获得,总的预编码矩阵对应秩为6的码本。下面公式一中(X)为直积,等式左边第一个矩阵为4行3列矩阵kroneker 2行2列矩阵;等式右边为8行6列矩阵。因为本次指示的秩为5那么最终取预编码矩阵的前5列或后5列预编码向量。
公式一:
具体应用情况七、终端支持基于DFT的Type I码本,而且基站为该终端配置了基于DFT的Type I码本,控制信令DCI中包含两个预编码指示域,其中一个指示域用于指示预编码矩阵、另一个指示域联合指示传输秩和对应的相位,该指示域和具体预编码矩阵映射关系为如下:
联合指示传输秩和对应的相位的指示域:联合指示传输秩(RI)和相干合并相位信息,比如:所支持的传输秩有{1,2,3,4};所支持的相干合并相位对应QPSK那么该指示域长度为4比特,总共16个状态,每个状态指示一种传输秩和相干合并相位组合。
用于指示预编码矩阵的指示域:
映射方式一、不同传输秩对应的预编码矩阵分别进行编号,下面例子中比如rank=1下先排i1,1再排i1,2再排i3。当然面前提到的排序顺序仅仅为一种示例,也可以换一种顺序排序。
当指示传输秩的指示域指示传输秩rank=1,指示预编码矩阵的指示域所指示的TPMI索引和表1中的预编码矩阵映射关系为:
TPMI索引i=(i1,1)+N1O1(i1,2)。
当指示传输秩的指示域指示传输秩rank=2、3或4,指示预编码矩阵的指示域所指示的TPMI索引分别与表2、表3或表4中的预编码矩阵映射关系为:
TPMI索引i=(i1,1)+N1O1(i1,2)+2N1O1N2O2(i3)。
当指示传输秩的指示域指示传输秩rank=5、6、7或8,指示预编码矩阵的指示域所指示的TPMI索引分别表7、表8、表9或表10中的预编码矩阵映射关系为:
当N1=4,N2=1时,TPMI索引i=(i1,1);
当N1=2,N2=2时,TPMI索引i=(i1,1)+N1O1(i1,2)。
映射方式二、所有rank对应的TPMI索引统一进行编号
TPMI索引i=i1,1*i1,2的数量*i3的数量+i1,2*i3的数量+i3。
需要说明的是,本申请的至少一个实施例,能够达到如下有益效果:
1、支持灵活配置上行传输预编码矩阵的码本并确定TPMI索引和具体预编码矩阵映射关系;
2、通过MAC CE信令控制DCI中的TPMI域的开销;
3、基于第一预编码矩阵和第二预编码的直积运算获取第三预编码矩阵下能够支持的所有传输rank。
如图3所示,本申请实施例提供一种预编码矩阵指示方法,包括:
步骤301,网络侧设备确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;
步骤302,所述网络侧设备根据所述指示方式,向终端发送DCI,所述DCI中携带 TPMI的指示信息。
可选地,所述网络侧设备确定下行控制信息DCI中的传输预编码索引TPMI的指示方式,包括:
所述网络侧设备根据为所述终端配置的码本对应的码本类型、与所述码本相关的信息以及所支持的传输秩的取值来确定DCI中的TPMI的指示方式。
可选地,在所述网络侧设备根据所述指示方式,向终端发送DCI之前,所述方法还包括:
所述网络侧设备通过高层信令配置第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
可选地,在所述网络侧设备通过高层信令配置第一信息之后,还包括:
所述网络侧设备通过媒体接入控制层控制单元MAC CE向终端发送第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集。
可选地,所述第二信息包括以下至少一项:预编码矩阵的起始索引和终止索引;至少一组预编码矩阵指示;比特位图。
可选地,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
可选地,所述至少一个预编码指示域包括以下至少一项:
联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
进行传输秩指示的第二预编码指示域;
进行预编码矩阵指示的第三预编码指示域;
进行相位信息指示的第四预编码指示域;
分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
联合进行传输秩以及相位信息指示的第六预编码指示域;
指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
可选地,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述TPMI与预编码矩阵的第一映射关系包括:
根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述TPMI与预编码矩阵的第二映射关系包括:
对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个 传输秩下的预编码矩阵与TPMI进行对应;或者
将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域以及进行传输秩指示的第二预编码指示域的情况下,所述第二预编码指示域所指示的传输秩小于或等于至少两个第五预编码指示域所指示的预编码矩阵进行直积运算的直积运算结果能支持的传输层数。
可选地,所述方法,还包括:
所述网络侧设备接收所述终端发送的能力信息;
其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
需要说明的是,上述实施例中所有关于网络侧设备的描述均适用于应用于网络侧设备的该预编码矩阵指示方法的实施例中,本申请实施例中,通过先确定DCI中的TPMI的指示方式,然后基于该指示方式通过DCI进行TPMI的指示信息的发送,使得终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵,以此能够准确进行TPMI的指示,保证上行数据传输时所采用的预编码矩阵的准确确定,进而保证上行数据的准确传输。
本申请实施例提供的预编码矩阵确定方法,执行主体可以为预编码矩阵确定装置。本申请实施例中以预编码矩阵确定装置执行预编码矩阵确定方法为例,说明本申请实施例提供的预编码矩阵确定装置。
如图4所示,本申请实施例的预编码矩阵确定装置400,应用于终端,包括:
第一接收模块401,用于接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;
第一确定模块402,用于根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
可选地,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
可选地,所述至少一个预编码指示域包括以下至少一项:
联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
进行传输秩指示的第二预编码指示域;
进行预编码矩阵指示的第三预编码指示域;
进行相位信息指示的第四预编码指示域;
分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
联合进行传输秩以及相位信息指示的第六预编码指示域;
指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
可选地,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第 一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述第一确定模块402,用于:
根据所述TPMI与预编码矩阵的第一映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第一映射关系包括:
根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述第一确定模块402,用于:
根据所述TPMI与预编码矩阵的第二映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第二映射关系包括:
对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;或者
将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域的情况下,所述第一确定模块402,包括:
通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵。
进一步地,在所述至少一个预编码指示域还包括进行传输秩指示的第二预编码指示域的情况下,所述通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵的实现方式,包括:
在所述第二预编码指示域所指示的传输秩小于直积运算结果能支持的传输层数的情况下,在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵。
进一步地,所述在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵的实现方式,包括:
将所述直积预算结果中排在最前面或最后面的N列的预编码向量作为进行上行数据传输时所采用的预编码矩阵;
其中,N等于所述第二预编码指示域所指示的传输秩。
可选地,所述装置,还包括:
第二发送模块,用于向网络侧设备发送能力信息;
其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
可选地,在所述第一接收模块401接收网络侧设备发送的下行控制信息DCI之前,还包括:
第二接收模块,用于接收所述网络侧设备通过高层信令发送的第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
可选地,在所述第二接收模块接收所述网络侧设备通过高层信令发送的第一信息之后,还包括:
第三接收模块,用于接收所述网络侧设备通过媒体接入控制层控制单元MAC CE发送的第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集。
可选地,所述第二信息包括以下至少一项:
预编码矩阵的起始索引和终止索引;
至少一组预编码矩阵指示;
比特位图。
需要说明的是,该装置实施例是与上述方法对应的,上述方法实施例中的所有实现方式均适用于该装置实施例中,也能达到相同的技术效果。
本申请实施例中的预编码矩阵确定装置可以是电子设备,例如具有操作***的电子设备,也可以是电子设备中的部件,例如集成电路或芯片。该电子设备可以是终端,也可以为除终端之外的其他设备。示例性的,终端可以包括但不限于上述所列举的终端11的类型,其他设备可以为服务器、网络附属存储器(Network Attached Storage,NAS)等,本申请实施例不作具体限定。
本申请实施例提供的预编码矩阵确定装置能够实现图2的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种终端,包括处理器和通信接口,通信接口用于接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;所述处理器用于根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
可选地,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
可选地,所述至少一个预编码指示域包括以下至少一项:
联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
进行传输秩指示的第二预编码指示域;
进行预编码矩阵指示的第三预编码指示域;
进行相位信息指示的第四预编码指示域;
分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
联合进行传输秩以及相位信息指示的第六预编码指示域;
指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指 示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
可选地,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述处理器用于:
根据所述TPMI与预编码矩阵的第一映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第一映射关系包括:
根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述处理器用于:
根据所述TPMI与预编码矩阵的第二映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第二映射关系包括:
对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;或者
将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域的情况下,所述处理器用于:
通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵。
可选地,在所述至少一个预编码指示域还包括进行传输秩指示的第二预编码指示域的情况下,所述处理器用于:
在所述第二预编码指示域所指示的传输秩小于直积运算结果能支持的传输层数的情况下,在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵。
可选地,所述处理器用于:
将所述直积预算结果中排在最前面或最后面的N列的预编码向量作为进行上行数据传输时所采用的预编码矩阵;
其中,N等于所述第二预编码指示域所指示的传输秩。
可选地,所述通信接口用于:
向网络侧设备发送能力信息;
其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
可选地,所述通信接口还用于:
接收所述网络侧设备通过高层信令发送的第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
可选地,所述通信接口还用于:
接收所述网络侧设备通过媒体接入控制层控制单元MAC CE发送的第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集。
可选地,所述第二信息包括以下至少一项:
预编码矩阵的起始索引和终止索引;
至少一组预编码矩阵指示;
比特位图。
该终端实施例与上述终端侧方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。具体地,图5为实现本申请实施例的一种终端的硬件结构示意图。
该终端500包括但不限于:射频单元501、网络模块502、音频输出单元503、输入单元504、传感器505、显示单元506、用户输入单元507、接口单元508、存储器509以及处理器510等中的至少部分部件。
本领域技术人员可以理解,终端500还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理***与处理器510逻辑相连,从而通过电源管理***实现管理充电、放电、以及功耗管理等功能。图5中示出的终端结构并不构成对终端的限定,终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
应理解的是,本申请实施例中,输入单元504可以包括图形处理单元(Graphics Processing Unit,GPU)5041和麦克风5042,图形处理器5041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元506可包括显示面板5061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板5061。用户输入单元507包括触控面板5071以及其他输入设备5072中的至少一种。触控面板5071,也称为触摸屏。触控面板5071可包括触摸检测装置和触摸控制器两个部分。其他输入设备5072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆,在此不再赘述。
本申请实施例中,射频单元501接收来自网络侧设备的下行数据后,可以传输给处理器510进行处理;另外,射频单元501可以向网络侧设备发送上行数据。通常,射频单元501包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器509可用于存储软件程序或指令以及各种数据。存储器509可主要包括存储程序或指令的第一存储区和存储数据的第二存储区,其中,第一存储区可存储操作***、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外,存 储器509可以包括易失性存储器或非易失性存储器,或者,存储器509可以包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本申请实施例中的存储器509包括但不限于这些和任意其它适合类型的存储器。
处理器510可包括一个或多个处理单元;可选的,处理器510集成应用处理器和调制解调处理器,其中,应用处理器主要处理涉及操作***、用户界面和应用程序等的操作,调制解调处理器主要处理无线通信信号,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器510中。
其中,所述射频单元501,用于:
接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;
所述处理器510,用于:根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
可选地,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
可选地,所述至少一个预编码指示域包括以下至少一项:
联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
进行传输秩指示的第二预编码指示域;
进行预编码矩阵指示的第三预编码指示域;
进行相位信息指示的第四预编码指示域;
分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
联合进行传输秩以及相位信息指示的第六预编码指示域;
指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
可选地,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述处理器510,用于:
根据所述TPMI与预编码矩阵的第一映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第一映射关系包括:
根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述处理器510,用于:
根据所述TPMI与预编码矩阵的第二映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
其中,所述第二映射关系包括:
对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;或者
将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域的情况下,所述处理器510,用于:
通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵。
可选地,在所述至少一个预编码指示域还包括进行传输秩指示的第二预编码指示域的情况下,所述处理器用于:
在所述第二预编码指示域所指示的传输秩小于直积运算结果能支持的传输层数的情况下,在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵。
可选地,所述处理器用于:
将所述直积预算结果中排在最前面或最后面的N列的预编码向量作为进行上行数据传输时所采用的预编码矩阵;
其中,N等于所述第二预编码指示域所指示的传输秩。
可选地,所述射频单元501,还用于:
向网络侧设备发送能力信息;
其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
可选地,所述射频单元501,还用于:
接收所述网络侧设备通过高层信令发送的第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
可选地,所述射频单元501,还用于:
接收所述网络侧设备通过媒体接入控制层控制单元MAC CE发送的第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵 集合的子集。
可选地,所述第二信息包括以下至少一项:
预编码矩阵的起始索引和终止索引;
至少一组预编码矩阵指示;
比特位图。
优选的,本申请实施例还提供一种终端,包括处理器,存储器,存储在存储器上并可在所述处理器上运行的程序或指令,该程序或指令被处理器执行时实现上述的预编码矩阵确定方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种可读存储介质,计算机可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述的预编码矩阵确定方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述的计算机可读存储介质,如只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等。
如图6所示,本申请实施例还提供一种预编码矩阵指示装置600,应用于网络侧设备,包括:
第二确定模块601,用于确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;
第一发送模块602,用于根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。
可选地,所述第二确定模块601,用于:
根据为所述终端配置的码本对应的码本类型、与所述码本相关的信息以及所支持的传输秩的取值来确定DCI中的TPMI的指示方式。
可选地,在所述第一发送模块602根据所述指示方式,向终端发送DCI之前,所述装置还包括:
配置模块,用于通过高层信令配置第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
可选地,在所述配置模块通过高层信令配置第一信息之后,还包括:
第三发送模块,用于通过媒体接入控制层控制单元MAC CE向终端发送第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集。
可选地,所述第二信息包括以下至少一项:
预编码矩阵的起始索引和终止索引;
至少一组预编码矩阵指示;
比特位图。
可选地,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
可选地,所述至少一个预编码指示域包括以下至少一项:
联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
进行传输秩指示的第二预编码指示域;
进行预编码矩阵指示的第三预编码指示域;
进行相位信息指示的第四预编码指示域;
分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
联合进行传输秩以及相位信息指示的第六预编码指示域;
指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
可选地,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述TPMI与预编码矩阵的第一映射关系包括:
根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述TPMI与预编码矩阵的第二映射关系包括:
对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;或者
将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域以及进行传输秩指示的第二预编码指示域的情况下,所述第二预编码指示域所指示的传输秩小于或等于至少两个第五预编码指示域所指示的预编码矩阵进行直积运算的直积运算结果能支持的传输层数。
可选地,所述装置,还包括:
第四接收模块,用于接收所述终端发送的能力信息;
其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
需要说明的是,该装置实施例是与上述方法对应的装置,上述方法实施例中的所有实现方式均适用于该装置实施例中,也能达到相同的技术效果,在此不再赘述。
本申请实施例还提供了一种网络侧设备,包括处理器及通信接口,其中,所述处理器用于确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;
所述通信接口用于根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。
可选地,所述处理器用于:
根据为所述终端配置的码本对应的码本类型、与所述码本相关的信息以及所支持的传输秩的取值来确定DCI中的TPMI的指示方式。
可选地,所述通信接口还用于:
通过高层信令配置第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
可选地,所述通信接口还用于:
通过媒体接入控制层控制单元MAC CE向终端发送第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集。
可选地,所述第二信息包括以下至少一项:预编码矩阵的起始索引和终止索引;至少一组预编码矩阵指示;比特位图。
可选地,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
可选地,所述至少一个预编码指示域包括以下至少一项:
联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
进行传输秩指示的第二预编码指示域;
进行预编码矩阵指示的第三预编码指示域;
进行相位信息指示的第四预编码指示域;
分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
联合进行传输秩以及相位信息指示的第六预编码指示域;
指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
可选地,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述TPMI与预编码矩阵的第一映射关系包括:
根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述TPMI与预编码矩阵的第二映射关系包括:
对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;或者
将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
可选地,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示 的至少两个第五预编码指示域以及进行传输秩指示的第二预编码指示域的情况下,所述第二预编码指示域所指示的传输秩小于或等于至少两个第五预编码指示域所指示的预编码矩阵进行直积运算的直积运算结果能支持的传输层数。
可选地,所述通信接口用于:
接收所述终端发送的能力信息;
其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
优选的,本申请实施例还提供一种网络侧设备,包括处理器,存储器,存储在存储器上并可在所述处理器上运行的程序或指令,该程序或指令被处理器执行时实现上述的预编码矩阵指示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
具体地,本申请实施例还提供了一种网络侧设备。如图7所示,该网络侧设备700包括:天线701、射频装置702、基带装置703、处理器704和存储器705。天线701与射频装置702连接。在上行方向上,射频装置702通过天线701接收信息,将接收的信息发送给基带装置703进行处理。在下行方向上,基带装置703对要发送的信息进行处理,并发送给射频装置702,射频装置702对收到的信息进行处理后经过天线701发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置703中实现,该基带装置703包括基带处理器。
基带装置703例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图7所示,其中一个芯片例如为基带处理器,通过总线接口与存储器705连接,以调用存储器705中的程序,执行以上方法实施例中所示的网络侧设备操作。
该网络侧设备还可以包括网络接口706,该接口例如为通用公共无线接口(common public radio interface,CPRI)。
具体地,本发明实施例的网络侧设备700还包括:存储在存储器705上并可在处理器704上运行的指令或程序,处理器704调用存储器705中的指令或程序执行图6所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述预编码矩阵指示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的网络侧设备中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
可选的,如图8所示,本申请实施例还提供一种通信设备800,包括处理器801和存储器802,存储器802上存储有可在所述处理器801上运行的程序或指令,例如,该通信设备800为终端时,该程序或指令被处理器801执行时实现上述预编码矩阵确定方法实施例的各个步骤,且能达到相同的技术效果。该通信设备800为网络侧设备时,该程序或指 令被处理器801执行时实现上述预编码矩阵指示方法实施例的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现上述预编码矩阵确定方法或预编码矩阵指示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为***级芯片,***芯片,芯片***或片上***芯片等。
本申请实施例另提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现上述预编码矩阵确定方法或预编码矩阵指示方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供了一种通信***,包括:终端及网络侧设备,所述终端可用于执行如上所述的预编码矩阵确定方法的步骤,所述网络侧设备可用于执行如上所述的预编码矩阵指示方法的步骤。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (28)

  1. 一种预编码矩阵指示方法,包括:
    网络侧设备确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;
    所述网络侧设备根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。
  2. 根据权利要求1所述的方法,其中,所述网络侧设备确定下行控制信息DCI中的传输预编码索引TPMI的指示方式,包括:
    所述网络侧设备根据为所述终端配置的码本对应的码本类型、与所述码本相关的信息以及所支持的传输秩的取值来确定DCI中的TPMI的指示方式。
  3. 根据权利要求1所述的方法,其中,在所述网络侧设备根据所述指示方式,向终端发送DCI之前,所述方法还包括:
    所述网络侧设备通过高层信令配置第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
  4. 根据权利要求3所述的方法,其中,在所述网络侧设备通过高层信令配置第一信息之后,还包括:
    所述网络侧设备通过媒体接入控制层控制单元MAC CE向终端发送第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集。
  5. 根据权利要求4所述的方法,其中,所述第二信息包括以下至少一项:
    预编码矩阵的起始索引和终止索引;
    至少一组预编码矩阵指示;
    比特位图。
  6. 根据权利要求1所述的方法,其中,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
  7. 根据权利要求6所述的方法,其中,所述至少一个预编码指示域包括以下至少一项:
    联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
    进行传输秩指示的第二预编码指示域;
    进行预编码矩阵指示的第三预编码指示域;
    进行相位信息指示的第四预编码指示域;
    分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
    联合进行传输秩以及相位信息指示的第六预编码指示域;
    指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指 示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
  8. 根据权利要求7所述的方法,其中,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述TPMI与预编码矩阵的第一映射关系包括:
    根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
  9. 根据权利要求7所述的方法,其中,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述TPMI与预编码矩阵的第二映射关系包括:
    对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;或者
    将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
  10. 根据权利要求7所述的方法,其中,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域以及进行传输秩指示的第二预编码指示域的情况下,所述第二预编码指示域所指示的传输秩小于或等于至少两个第五预编码指示域所指示的预编码矩阵进行直积运算的直积运算结果能支持的传输层数。
  11. 根据权利要求1所述的方法,其中,还包括:
    所述网络侧设备接收所述终端发送的能力信息;
    其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
  12. 一种预编码矩阵确定方法,包括:
    终端接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;
    所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
  13. 根据权利要求12所述的方法,其中,所述TPMI的指示信息通过至少一个预编码指示域进行指示。
  14. 根据权利要求13所述的方法,其中,所述至少一个预编码指示域包括以下至少一项:
    联合进行传输秩以及预编码矩阵指示的第一预编码指示域;
    进行传输秩指示的第二预编码指示域;
    进行预编码矩阵指示的第三预编码指示域;
    进行相位信息指示的第四预编码指示域;
    分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域;
    联合进行传输秩以及相位信息指示的第六预编码指示域;
    指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指 示域,所述第一部分信息和第二部分信息用于确定码本中的预编码矩阵。
  15. 根据权利要求14所述的方法,其中,在所述至少一个预编码指示域包括联合进行传输秩以及预编码矩阵指示的第一预编码指示域、或者所述至少一个预编码指示域包括指示一个码本的第一部分信息的第七预编码指示域和第二部分信息的第八预编码指示域的情况下,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵,包括:
    根据所述TPMI与预编码矩阵的第一映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
    其中,所述第一映射关系包括:
    根据传输秩的排序,分别对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将预编码矩阵与TPMI进行对应。
  16. 根据权利要求14所述的方法,其中,在所述至少一个预编码指示域包括进行预编码矩阵指示的第三预编码指示域的情况下,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵,包括:
    根据所述TPMI与预编码矩阵的第二映射关系,确定与所述TPMI的指示信息对应的进行上行数据传输时所采用的预编码矩阵;
    其中,所述第二映射关系包括:
    对同一个传输秩下的同一个码本对应的预编码矩阵进行排序,按照排序顺序将同一个传输秩下的预编码矩阵与TPMI进行对应;或者
    将所有传输秩下的同一个码本对应的预编码矩阵进行统一排序,按照排序顺序将预编码矩阵与TPMI进行对应。
  17. 根据权利要求14所述的方法,其中,在所述至少一个预编码指示域包括分别进行不同码本对应的预编码矩阵指示的至少两个第五预编码指示域的情况下,所述终端根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵,包括:
    通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵。
  18. 根据权利要求17所述的方法,其中,在所述至少一个预编码指示域还包括进行传输秩指示的第二预编码指示域的情况下,所述通过将至少两个第五预编码指示域所指示的预编码矩阵进行直积运算,确定进行上行数据传输时所采用的预编码矩阵,包括:
    在所述第二预编码指示域所指示的传输秩小于直积运算结果能支持的传输层数的情况下,在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵。
  19. 根据权利要求18所述的方法,其中,所述在直积运算结果中,将与所述第二预编码指示域所指示的传输秩相同列数的预编码向量作为进行上行数据传输时所采用的预编码矩阵,包括:
    将所述直积预算结果中排在最前面或最后面的N列的预编码向量作为进行上行数据传输时所采用的预编码矩阵;
    其中,N等于所述第二预编码指示域所指示的传输秩。
  20. 根据权利要求12所述的方法,其中,还包括:
    所述终端向网络侧设备发送能力信息;
    其中,所述能力信息中包括所述终端支持的至少一个用于上行传输的码本的信息。
  21. 根据权利要求12所述的方法,其中,在所述终端接收网络侧设备发送的下行控制信息DCI之前,还包括:
    所述终端接收所述网络侧设备通过高层信令发送的第一信息,所述第一信息用于指示终端能够使用的第一预编码矩阵集合,所述第一信息包括以下至少一项:码本类型、与所述码本相关的信息、传输秩限制、码本子集约束CBSR。
  22. 根据权利要求21所述的方法,其中,在所述终端接收所述网络侧设备通过高层信令发送的第一信息之后,还包括:
    所述终端接收所述网络侧设备通过媒体接入控制层控制单元MAC CE发送的第二信息,所述第二信息用于指示第二预编码矩阵集合,所述第二预编码矩阵集合为所述第一预编码矩阵集合的子集。
  23. 根据权利要求22所述的方法,其中,所述第二信息包括以下至少一项:
    预编码矩阵的起始索引和终止索引;
    至少一组预编码矩阵指示;
    比特位图。
  24. 一种预编码矩阵确定装置,应用于终端,包括:
    第一接收模块,用于接收网络侧设备发送的下行控制信息DCI,所述DCI中携带传输预编码索引TPMI的指示信息;
    第一确定模块,用于根据所述TPMI的指示信息,确定进行上行数据传输时所采用的预编码矩阵。
  25. 一种预编码矩阵指示装置,应用于网络侧设备,包括:
    第二确定模块,用于确定下行控制信息DCI中的传输预编码索引TPMI的指示方式;
    第一发送模块,用于根据所述指示方式,向终端发送DCI,所述DCI中携带TPMI的指示信息。
  26. 一种终端,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求12至23任一项所述的预编码矩阵确定方法的步骤。
  27. 一种网络侧设备,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至11任一项所述的预编码矩阵指示方法的步骤。
  28. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至11任一项所述的预编码矩阵指示方法的步骤或实现如权利要求12至23任一项所述的预编码矩阵确定方法的步骤。
PCT/CN2023/103278 2022-07-04 2023-06-28 预编码矩阵指示、确定方法、装置、网络侧设备及终端 WO2024007918A1 (zh)

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