WO2019085714A1 - 数据传输方法和装置 - Google Patents

数据传输方法和装置 Download PDF

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Publication number
WO2019085714A1
WO2019085714A1 PCT/CN2018/109583 CN2018109583W WO2019085714A1 WO 2019085714 A1 WO2019085714 A1 WO 2019085714A1 CN 2018109583 W CN2018109583 W CN 2018109583W WO 2019085714 A1 WO2019085714 A1 WO 2019085714A1
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Prior art keywords
codebook
processed
processing
layer
mapping
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PCT/CN2018/109583
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English (en)
French (fr)
Inventor
吴艺群
孟祥明
徐修强
陈雁
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华为技术有限公司
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Publication of WO2019085714A1 publication Critical patent/WO2019085714A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a multiple access method and apparatus.
  • multiple access techniques can be introduced.
  • multiple terminals can be supported to access the same network device, and the network device performs data transmission.
  • multiple access may include orthogonal multiple access and non-orthogonal multiple access (NOMA);
  • NOMA non-orthogonal multiple access
  • multiple access may include code division multiple access (CDMA) ), time division multiple access (TDMA), frequency division multiple access (FDMA), and space division multiple access (SDMA).
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • SDMA space division multiple access
  • the present application provides a data transmission method, including: determining a pre-processed output sequence according to a pre-processed input symbol and a mapping relationship between a pre-processed input symbol and a pre-processed output sequence; and transmitting the pre-processed output sequence.
  • the mapping relationship between the pre-processed input symbols and the pre-processed output sequence is configured, and the mapping relationship need not be limited to a linear relationship, and more low-correlation pre-processed output sequences can be introduced, so that more low-correlation can be introduced.
  • Preprocessed codebook When the pre-processing codebook is independently configured for different UEs, the number of UE multiplexing can be increased while satisfying low interference between UEs, thereby improving the system transmission rate.
  • the present application provides a data transmission method, including: determining a pre-processed output sequence according to a mapping relationship between a pre-processed input bit and a pre-processed input bit and a pre-processed output sequence, and mapping the pre-processed output sequence to v Layer, obtaining a layer mapping output symbol, where v is a positive integer, the pre-processed output sequence includes at least 2 symbols; and the layer mapping output symbol is transmitted.
  • v is a positive integer
  • the pre-processed output sequence includes at least 2 symbols; and the layer mapping output symbol is transmitted.
  • the present application provides a data transmission method, including: mapping an input bit to a v layer to obtain a layer mapping output bit, where v is a positive integer. For each layer of output bits in the layer mapping output bits, a pre-processed output sequence is determined based on the mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence, and the pre-processed output sequence is transmitted.
  • a pre-processed output sequence is determined based on the mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence, and the pre-processed output sequence is transmitted.
  • more low-correlation pre-processing output sequences can be introduced, so that more low-correlation preprocessing codebooks can be introduced.
  • the pre-processing codebook is independently configured for different UEs, the number of UE multiplexing can be increased while satisfying low interference between UEs, thereby improving the system transmission rate.
  • the pre-processed output sequence is a sequence in the first pre-processed codebook, the method further comprising: determining a pre-processed codebook set according to the transmit waveform, A pre-processed codebook is a codebook in a pre-processed codebook set.
  • the pre-processed codebook set is the first pre-processed codebook set; if the transmit waveform is a cyclic prefix Orthogonal Frequency Division Multiplexing (CP-OFDM)
  • the preprocessed codebook set is a second preprocessed codebook set; the first preprocessed codebook set and the second preprocessed codebook set are different.
  • the first pre-processing codebook set includes a constant modulus codebook
  • the second pre-processing codebook set includes a sparse codebook.
  • a second design according to the first design, the method further comprising: receiving control information, the control information including at least one of a codebook index and waveform information.
  • the codebook index is used to determine a first pre-processed codebook from the pre-processed codebook set, and the waveform information is used to determine a transmit waveform.
  • the transmit waveform and/or the first pre-processed codebook can be flexibly configured.
  • the control information may include at least one of a codebook index and waveform information of the spatial layer.
  • the first pre-processing codebook includes R sequences, and the relationship between the R sequences and the sequence in the second pre-processing codebook is a linear relationship, wherein R is an integer greater than or equal to 1.
  • R is an integer greater than or equal to 1.
  • One of the R sequences is S i , -S i , S i or -jS i , where j is an imaginary unit and the sequence S i is a sequence in the second pre-processing codebook.
  • the number of pre-processed codebooks can be increased, so that the number of UE multiplexes in the NOMA system can be increased, thereby increasing the system data rate.
  • the generated first pre-processed codebook can also maintain the characteristics of the second pre-processed codebook.
  • the application provides an apparatus, including a pre-processing module and a transceiver module, wherein the pre-processing module is configured to determine a pre-processing output according to a mapping relationship between a pre-processed input symbol and a pre-processed input symbol and a pre-processed output sequence.
  • the sequence, the transceiver module is configured to send the pre-processed output sequence.
  • the application provides an apparatus, including: a pre-processing module, configured to determine a pre-processed output sequence according to a mapping relationship between a pre-processed input bit and a pre-processed input bit and a pre-processed output sequence, where the pre-processing The output sequence includes at least 2 symbols; a layer mapping module is configured to map the preprocessed output sequence to the v layer to obtain a layer mapping output symbol, where v is a positive integer; and a transceiver module is configured to send the layer mapping output symbol .
  • the application provides an apparatus, including: a layer mapping module, configured to map an input bit to a v layer, to obtain a layer mapping output bit, where v is a positive integer; and a preprocessing module, configured to perform layer mapping Outputting each layer of output bits, determining a pre-processed output sequence according to a mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence; and a transceiver module for transmitting the pre-processed output sequence.
  • a layer mapping module configured to map an input bit to a v layer, to obtain a layer mapping output bit, where v is a positive integer
  • a preprocessing module configured to perform layer mapping Outputting each layer of output bits, determining a pre-processed output sequence according to a mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence
  • a transceiver module for transmitting the pre-processed output sequence.
  • the pre-processed output sequence is a sequence in the first pre-processed codebook
  • the pre-processing module is further configured to determine a pre-processed codebook set according to the transmit waveform
  • a pre-processed codebook is a codebook in a pre-processed codebook set.
  • the pre-processed codebook set is the first pre-processed codebook set; if the transmit waveform is a cyclic prefix Orthogonal Frequency Division Multiplexing (CP-OFDM)
  • the preprocessed codebook set is a second preprocessed codebook set; the first preprocessed codebook set and the second preprocessed codebook set are different.
  • the first pre-processing codebook set includes a constant modulus codebook
  • the second pre-processing codebook set includes a sparse codebook.
  • the transceiver module is further configured to receive control information, where the control information includes at least one of a codebook index and waveform information. If the control information includes a codebook index, the pre-processing module is further configured to determine, according to the codebook index, the first pre-processed codebook from the pre-processed codebook set. If the control information includes waveform information, the pre-processing module is further configured to determine the transmit waveform based on the waveform information. Further, for one spatial layer, the control information may include at least one of a codebook index and waveform information of the spatial layer.
  • the first pre-processing codebook includes R sequences, and the relationship between the R sequences and the sequence in the second pre-processing codebook is a linear relationship, wherein R is an integer greater than or equal to 1.
  • R is an integer greater than or equal to 1.
  • One of the R sequences is S i , -S i , S i or -jS i , where j is an imaginary unit and the sequence S i is a sequence in the second pre-processing codebook.
  • the present application provides an apparatus capable of implementing the functions of at least one of the first aspect and the various aspects of the first aspect.
  • This function can be implemented in the form of hardware, software or hardware plus software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processor, a memory, and a transceiver. Wherein the memory is coupled to the processor, the transceiver is coupled to the processor, and the processor executes the program instructions stored by the memory.
  • the processor determines a pre-processed output sequence according to the mapping relationship between the pre-processed input symbols and the pre-processed input symbols and the pre-processed output sequence, and transmits the pre-processed output sequence by using a transceiver.
  • the present application provides an apparatus capable of implementing the functions of at least one of the second aspect and the second aspect of the design.
  • This function can be implemented in the form of hardware, software or hardware plus software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processor, a memory, and a transceiver. Wherein the memory is coupled to the processor, the transceiver is coupled to the processor, and the processor executes the program instructions stored by the memory.
  • the processor determines the pre-processed output sequence according to the mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence, maps the pre-processed output sequence to the v-layer, obtains the layer-mapped output symbol, and uses the transceiver to transmit the layer mapping Output symbol.
  • v is a positive integer and the preprocessed output sequence includes at least 2 symbols.
  • the present application provides an apparatus capable of implementing the functions of at least one of the third aspect and the third aspect of the design.
  • This function can be implemented in the form of hardware, software or hardware plus software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processor, a memory, and a transceiver. Wherein the memory is coupled to the processor, the transceiver is coupled to the processor, and the processor executes the program instructions stored by the memory.
  • the processor maps the input bits to the v layer to obtain layer mapped output bits, where v is a positive integer.
  • the processor determines the pre-processed output sequence according to the mapping relationship between the pre-processed input bit and the pre-processed input bit and the pre-processed output sequence, and transmits the pre-processed output sequence by using the transceiver.
  • the pre-processed output sequence is a sequence in the first pre-processed codebook
  • the processor is further configured to determine a pre-processed codebook set according to the transmit waveform
  • a pre-processed codebook is a codebook in a pre-processed codebook set.
  • the pre-processed codebook set is the first pre-processed codebook set; if the transmit waveform is a cyclic prefix Orthogonal Frequency Division Multiplexing (CP-OFDM)
  • the preprocessed codebook set is a second preprocessed codebook set; the first preprocessed codebook set and the second preprocessed codebook set are different.
  • the first pre-processing codebook set includes a constant modulus codebook
  • the second pre-processing codebook set includes a sparse codebook.
  • the processor further receives control information by using a transceiver, the control information including at least one of a codebook index and waveform information.
  • the codebook index is used to determine the first pre-processed codebook from the pre-processed codebook set.
  • Waveform information is used to determine the transmitted waveform.
  • the control information may include at least one of a codebook index and waveform information of the spatial layer.
  • the first pre-processing codebook includes R sequences, and the relationship between the R sequences and the sequence in the second pre-processing codebook is a linear relationship, wherein R is an integer greater than or equal to 1.
  • R is an integer greater than or equal to 1.
  • One of the R sequences is S i , -S i , S i or -jS i , where j is an imaginary unit and the sequence S i is a sequence in the second pre-processing codebook.
  • the present application provides a chip system including a processor, and further comprising a memory for implementing at least one of the first aspect and the first aspect.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system including a processor, and may further include a memory for implementing at least one of the second aspect and the second aspect.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a chip system including a processor, and may further include a memory for implementing at least one of the third aspect and the third aspect.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform at least one of the first aspect and the first aspect of the design.
  • the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform at least one of the second aspect and the second aspect of the design.
  • the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform at least one of the third and third aspects of the design.
  • the present application provides a data transmission method, including: pre-processing input data based on a first pre-processing codebook and/or a second pre-processing codebook, obtaining a pre-processed output sequence, and transmitting a pre-processing output. sequence.
  • the first pre-processing codebook includes R sequences, and the relationship between the R sequences and the sequence in the second pre-processing codebook is a linear relationship, and R is an integer greater than or equal to 1.
  • one of the R sequences is S i , -S i , S i or -jS i , wherein j is an imaginary unit and the sequence S i is a second pre-processing code The sequence in this.
  • the number of codebooks can be increased, and the generated first pre-processed codebook can also maintain the characteristics of the second pre-processed codebook.
  • the present application provides an apparatus capable of implementing the functions of at least one of the first aspect and the various aspects of the first aspect.
  • This function can be implemented in the form of hardware, software or hardware plus software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus includes a processor, a memory, and a transceiver. Wherein the memory is coupled to the processor, the transceiver is coupled to the processor, and the processor executes the program instructions stored by the memory.
  • the processor preprocesses the input data based on the first pre-processing codebook and/or the second pre-processing codebook to obtain a pre-processed output sequence, and the processor transmits the pre-processed output sequence by using the transceiver.
  • the first pre-processing codebook includes R sequences, and the relationship between the R sequences and the sequence in the second pre-processing codebook is a linear relationship, and R is an integer greater than or equal to 1.
  • one of the R sequences is S i , -S i , S i or -jS i , wherein j is an imaginary unit and the sequence S i is a second pre-processing code The sequence in this.
  • the number of codebooks can be increased, and the generated first pre-processed codebook can also maintain the characteristics of the second pre-processed codebook.
  • the present application provides a chip system including a processor, and may further include a memory for implementing at least one of the sixteenth and sixteenth aspects of the design.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform at least one of the sixteenth and sixteenth aspects of the design.
  • FIG. 1 is a schematic diagram of a process flow according to an embodiment of the present application
  • FIG. 2 is a diagram showing an example of a first data transmission method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a process flow of applying the first data transmission method according to an embodiment of the present disclosure
  • FIG. 4 is a diagram showing another example of a processing flow of applying the first data transmission method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a second data transmission method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of a process flow of applying a second data transmission method according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of still another processing flow of applying the second data transmission method according to an embodiment of the present application.
  • FIG. 8 is a diagram showing an example of a third data transmission method according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a process flow of applying a third data transmission method according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of still another processing procedure of applying a third data transmission method according to an embodiment of the present disclosure.
  • FIG. 11 is a diagram showing an example of a structure of a device according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram showing another structure of a device according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram showing another structure of a device according to an embodiment of the present application.
  • FIG. 14 is a diagram showing an example of a structure of another apparatus according to an embodiment of the present application.
  • 5G fifth generation mobile communication technology
  • LTE long term evolution
  • 5G can also be called new radio (NR).
  • wireless communication can be performed between the communication devices using air interface resources.
  • the communication device includes a network device and a terminal device, and the network device may also be referred to as a network side device.
  • the air interface resource may include at least one of a time domain resource, a frequency domain resource, and a code resource.
  • the technical solutions provided by the embodiments of the present application are mainly applied to wireless communication between communication devices.
  • Wireless communication between communication devices may include wireless communication between the network device and the terminal device, wireless communication between the network device and the network device, and wireless communication between the terminal device and the terminal device.
  • the term “wireless communication” may also be simply referred to as "communication”
  • the term “communication” may also be described as "data transmission” or "transmission”.
  • the terminal device in the embodiment of the present application may also be referred to as a terminal, and is a device having a wireless transceiver function, which may be deployed on land, including indoor or outdoor, handheld or on-board, or deployed on a water surface (such as a ship, etc.) ); can also be deployed in the air (such as airplanes, balloons, satellites, etc.).
  • the terminal device may be a user equipment (UE), wherein the UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device having a wireless communication function.
  • the UE can be a mobile phone, a tablet, or a computer with wireless transceiving capabilities.
  • the terminal device may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in an unmanned vehicle, a wireless terminal in telemedicine, and an intelligent device.
  • the device that implements the function of the terminal may be a terminal, or may be a device in the terminal that supports the terminal to implement the function.
  • the device that implements the function of the terminal is a terminal, and the terminal is a UE as an example, and the technical solution provided by the embodiment of the present application is described.
  • the network device involved in the embodiment of the present application includes a base station (BS), which is a device deployed in the radio access network and capable of performing wireless communication with the terminal.
  • the base station may have various forms, such as a macro base station, a micro base station, a relay station, and an access point.
  • the base station involved in the embodiment of the present application may be a base station in a 5G system or a base station in an LTE system, where the base station in the 5G system may also be referred to as a transmission reception point (TRP) or a gNB.
  • TRP transmission reception point
  • the device that implements the function of the network device may be a network device, or may be a device in the network device that supports the network device to implement the function.
  • the device that implements the function of the network device is a network device, and the network device is a base station as an example, and the technical solution provided by the embodiment of the present application is described.
  • the communication device that transmits data may also be referred to as a transmitting end, and the communication device that receives data may also be referred to as a receiving end.
  • the base station sends data to the UE.
  • the base station may also be referred to as a transmitting end, and the UE may also be referred to as a receiving end; the UE transmits data to the base station, and the base station receives the UE.
  • transmitting data the UE may also be referred to as a transmitting end, and the base station may also be referred to as a receiving end.
  • the sender can process and send input data based on various possible processing flows.
  • the transmitting end can process and transmit the input data based on the processing flow shown in FIG. 1.
  • the processing flow includes bit level processing and symbol level processing.
  • the bit-level processing may also be referred to as a bit-level operation
  • the symbol-level processing may also be referred to as a symbol-level operation.
  • Bit level processing includes forward error correction (FEC) and interleaving/scrambling.
  • FEC forward error correction
  • the FEC processing is used for channel coding the input bits, so that the receiving end can detect the error or can correct the error, thereby enhancing the reliability of the data transmission.
  • the input bits can be encoded using forward error correction codes commonly used in the art.
  • the commonly used forward error correction code may be a convolutional code or a block code.
  • the input bits are encoded to obtain coded bits.
  • the coded bit is a bit that is subjected to forward error correction coding, and may also be referred to as another name, which is not limited in this application.
  • bits When interleaving/scrambling is performed, the bits are scrambled using a scrambling code to reduce interference between data.
  • bits When interleaving/scrambling is performed, bits may be interleaved by using an interleaving method commonly used in the art, so that adjacent bits are decentralized to avoid concentrated bit errors during transmission.
  • the commonly used interleaving method may be row and column interleaving, or may be interleaved according to an interleaving pattern.
  • the bits When performing interleaving/scrambling, if the bits are scrambled and interleaved, the bits may be scrambled and then interleaved, or the bits may be interleaved and then scrambled. This application is not limited.
  • different scrambling codes can be used to scramble the bits of different UEs.
  • bits of different UEs can be interleaved by using different interleaving patterns, so as to reduce correlation between data of different UEs, thereby reducing UEs. Interference.
  • the coded bits are interleaved and/or scrambled to obtain scrambled bits.
  • Symbol level processing includes preprocessing output symbol sequence generation and symbol to resource element (RE) mapping.
  • Orthogonal Frequency Division Multiplexing (OFDM)-based communication system the communication system is exemplarily a 5G system or an LTE system, and one resource element corresponds to one symbol in the time domain and corresponds to one in the frequency domain. Subcarrier.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the scrambled bits may be pre-processed to obtain a pre-processed output symbol sequence.
  • the pre-processed output symbol sequence includes a positive integer number of symbols, which may be a complex symbol.
  • the pre-processed output symbol sequence may also be referred to as a pre-processed output sequence, and the symbols included in the pre-processed output symbol sequence may also be referred to as pre-processed output symbols.
  • symbol-to-resource element mapping is performed, the symbols in the pre-processed output symbol sequence can be mapped to resource elements such that the sender can transmit the symbol at the resource element.
  • the symbol-to-resource element mapping may also be referred to as a resource element mapping or other name, which is not limited in this application.
  • the symbol-to-resource element mapping process of different UEs may map the respective pre-processed output symbols to the same resource element for transmission, and the pre-processing output symbols of different UEs are non- Orthogonal
  • the base station may receive a superposition of a plurality of non-orthogonal pre-processed output symbols in the resource element; if the transmitting end is a base station, the base station may map the pre-processed output symbols of different UEs to the same resource element for transmission, The pre-processed output symbols of different UEs are non-orthogonal.
  • the data to be sent may be data that can be sent in an air interface; or data that can be sent in an air interface after being processed, which is not limited in this application.
  • the process of obtaining a sequence of modulation symbols for the UE may be referred to as pre-processing.
  • the pre-processing may also be referred to as another name, which is not limited in this application.
  • the mapping of the modulation symbols of different UEs to the same resource element for transmission may also be referred to as multiplexing of the UE.
  • the number of UEs that can be multiplexed in the same resource element may be referred to as the UE multiplexing number.
  • NOMA Relative orthogonal multiple access
  • NOMA can provide a relatively large number of UE multiplexing.
  • the following embodiments provide corresponding methods and corresponding devices.
  • the transmitting end determines a pre-processing output according to a mapping relationship between a pre-processed input symbol and a pre-processed input symbol and a pre-processed output sequence.
  • the sending the pre-processed output sequence may also be described as transmitting the determined pre-processed output sequence.
  • the first data transmission method provided by the embodiment of the present application may also be described as: the transmitting end, according to the pre-processing input symbol and the mapping relationship between the pre-processed input symbol and the pre-processed output sequence.
  • the preprocessed input symbols are preprocessed according to a mapping relationship between the preprocessed input symbols and the preprocessed output sequence, and a preprocessed output sequence is obtained, and the obtained preprocessed output sequence is transmitted.
  • the pre-processed input symbol may be x symbols, and the combined value of the x symbols may be any one of M values. In the embodiment of the present application, the combined value of the x symbols may also be simply referred to as the value of the x symbols.
  • the mapping relationship between the pre-processed input symbols and the pre-processed output sequence can be described as a mapping relationship between the M values and the M pre-processed output sequences. Where x and M are integers greater than or equal to 1, the preprocessed input symbols may be complex symbols, and a preprocessed output sequence includes positive integer symbols.
  • the M pre-processed output sequences are included in the first pre-processed codebook, and may also be described as including the M pre-processed output sequences in the first pre-processed codebook.
  • the pre-processing codebook may also be referred to as another name.
  • the first pre-processing codebook may also be referred to as a pre-processing codebook A or other name, which is not limited in this application.
  • the first pre-processing codebook is included in the pre-processing codebook set, and may also be described as including the first pre-processing codebook in the pre-processing codebook set.
  • the pre-processed codebook set includes an available pre-processed codebook, and the available pre-processed codebook includes an available pre-processed sequence.
  • the preprocessing matrix is configured, and the preprocessed input symbols are multiplied by the preprocessing matrix to obtain a preprocessed output sequence, and the preprocessed input symbols and the preprocessed output sequences are linear.
  • the pre-processing matrix can be independently configured for different UEs, and the number of pre-processing matrices is limited, thereby enabling multiplexing. The number of UEs is limited.
  • the first data transmission method provided by the embodiment of the present application configures a mapping relationship between the pre-processed input symbols and the pre-processed output sequence, and the mapping relationship does not need to be limited to a linear relationship, and more low-correlation pre-processed output sequences may be introduced.
  • more low-correlation preprocessing codebooks can be introduced.
  • the pre-processing codebook is independently configured for different UEs, the number of UE multiplexing can be increased while satisfying low interference between UEs, thereby improving the system transmission rate.
  • a mapping relationship between the pre-processed input symbol and the pre-processed output sequence may be set according to a modulation mode.
  • mapping relationship between the preprocessed input symbol and the preprocessed output sequence may be Described by Table 1.
  • Table 1 the combined value of each pre-processed input symbol can have four possible values, and the four possible values are q1, q2, q3, and q4, respectively.
  • the preprocessed output sequences corresponding to the four possible values are as shown in Table 1.
  • the pre-processed input symbol is a binary phase shift keying (BPSK) modulated modulation symbol
  • BPSK binary phase shift keying
  • the preprocessed output sequences corresponding to the four possible values are as shown in Table 2.
  • the corresponding pre-processed output sequence is among them
  • the corresponding pre-processed output sequence is determined to be among them
  • the corresponding pre-processed output sequence is determined to be among them
  • the corresponding pre-processed output sequence is determined to be among them
  • the corresponding pre-processed output sequence is determined to be among them
  • the corresponding pre-processed output sequence is determined to be among them
  • the receiving end sends signaling to the transmitting end, where the signaling carries the modulation mode indication information, which is used to indicate the modulation mode configured by the receiving end for the transmitting end, and the transmitting end receives the signaling sent by the receiving end, and the signaling is received by the receiving end.
  • Signaling determines the modulation method.
  • the signaling may carry a modulation mode identifier.
  • the transmitting end in the method is the receiving end when performing the signaling transmission
  • the receiving end in the method is the transmitting end when performing the signaling transmission.
  • Table 3 shows an example of the mapping relationship between the modulation scheme identifier and the corresponding modulation scheme.
  • the receiving end is a base station
  • the transmitting end is a UE
  • the receiving end is a first UE
  • the transmitting end is a second UE
  • the receiving end is a first base station
  • the transmitting end is a second base station
  • the signaling may be high layer signaling or physical layer signaling.
  • the high layer signaling may be radio resource control (RRC) signaling, broadcast message, system message or medium access control (MAC) control element (CE).
  • RRC radio resource control
  • MAC medium access control
  • CE medium access control
  • the physical layer signaling may be the signaling carried by the physical control channel or the signaling carried by the physical data channel, where the signaling carried by the physical control channel may be the signaling carried by the physical downlink control channel and the enhanced physical downlink control channel (enhanced physical The signaling carried by the downlink control channel (EPDCCH), the signaling carried by the narrowband physical downlink control channel (NPDCCH), or the machine type communication (MTC) physical downlink control channel (MPDCCH) ) Signaling carried.
  • EPCCH downlink control channel
  • NPDCCH narrowband physical downlink control channel
  • MTC machine type communication
  • the signaling carried by the physical downlink control channel may also be referred to as downlink control information (DCI).
  • DCI downlink control information
  • the signaling carried by the physical control channel may also be the signaling carried by the physical sidelink control channel, and the signaling carried by the physical secondary link control channel may also be referred to as the sidelink control information. , SCI).
  • the transmitting end may determine a modulation mode, use the modulation mode to modulate the data to be transmitted, and send signaling to the receiving end, and indicate the modulation mode used by the signaling.
  • the signaling manner may include a modulation mode identifier.
  • the receiving end is a base station
  • the transmitting end is a UE
  • the receiving end is a first UE
  • the transmitting end is a second UE
  • the receiving end is a first base station
  • the transmitting end is a second base station.
  • the transmitting end may send a pre-processed output sequence using a waveform.
  • the sending of the pre-processed output sequence by the transmitting end may also be described as the sending end transmitting the symbols in the pre-processed output sequence.
  • the waveform used by the transmitting end may also be referred to as a sending waveform, a transmission waveform, a waveform, or other names, which is not limited in this application.
  • the transmit waveform may be a discrete fourier transform spreading OFDM (DFT-s-OFDM) waveform or a cyclic prefix orthogonal frequency division multiplexing (cyclic prefix orthogonal frequency division multiplexing, CP-OFDM) waveform.
  • DFT-s-OFDM discrete fourier transform spreading OFDM
  • CP-OFDM cyclic prefix orthogonal frequency division multiplexing
  • the DFT-s-OFDM waveform may also be simply referred to as DFT-s-OFDM
  • the CP-OFDM waveform may also be simply referred to as CP-OFDM.
  • the transmitting end transmitting the pre-processed output sequence may further include performing a discrete fourier transform (DFT) transform on the pre-processed output sequence.
  • DFT discrete fourier transform
  • the transmitting end determines the pre-processed output sequence according to the mapping relationship between the pre-processed input symbol and the pre-processed input symbol and the pre-processed output sequence, performs DFT transform on the pre-processed output sequence, obtains a frequency domain symbol, and transmits the frequency domain symbol.
  • the DFT transform of the pre-processed output sequence by the transmitting end may also be described as: the transmitting end performs DFT transform on the symbols in the pre-processed output sequence.
  • the input data can be processed using the processing flow shown in FIG. 3 .
  • the process flow shown in FIG. 3 may include interleaving/scrambling, modulation, layer mapping, pre-processing, and DFT, and may also include domain coding and resource element mapping.
  • the input data can be Q code words.
  • One of the Q code words may be a data block obtained by performing forward error correction coding on a set of input bits.
  • the data block may also be referred to as a coding block, which is not limited in this application.
  • Q is an integer greater than or equal to 1, and exemplarily, Q is equal to 2.
  • the transmitting end scrambles each of the Q codewords to obtain scrambled bits corresponding to the codewords.
  • the transmitting end interleaves and scrambles each of the Q codewords to obtain scrambled bits corresponding to the respective codewords.
  • the codeword may be scrambled and then interleaved, or the codeword may be interleaved and then scrambled. This application does not limit the application.
  • the scrambled bits are modulated to obtain modulation symbols.
  • the scrambling bits corresponding to each codeword may be separately modulated to obtain modulation symbols corresponding to each codeword.
  • the scrambling bits corresponding to each codeword are modulated to obtain modulation symbols corresponding to the respective codewords.
  • the modulation manners of different codewords may be the same or different, and the application does not limit the application.
  • the modulation scheme can also be described as a mapping relationship between input bits and output symbols.
  • the modulation scheme may be a modulation scheme commonly used in the art such as BPSK, QPSK, 16QAM, and 64QAM.
  • Layer mapping is performed on the modulation symbols, and modulation symbols are mapped to the v layer to obtain layer mapping symbols. Specifically, the modulation symbols corresponding to the Q code words are mapped to the v layer to obtain a v layer layer mapping symbol.
  • v is an integer greater than or equal to 1.
  • the transmitting end and the receiving end can perform data transmission in at least one spatial layer, so that data can be transmitted through multiple spatial layers, and the data transmission rate is increased.
  • the layer mapping symbols are preprocessed to obtain a preprocessed output sequence. Specifically, each layer symbol in the layer mapping symbol is preprocessed to obtain a preprocessed output sequence corresponding to the layer symbol.
  • the pre-processing may be pre-processing in the first data transmission method provided by the embodiments of the present application. That is, for each layer symbol in the layer mapping symbol, the layer symbol is used as a pre-processing input symbol, and the pre-processed output sequence is determined according to the mapping relationship between the pre-processed input symbol and the pre-processed input symbol and the pre-processed output sequence. By preprocessing, a v layer preprocessed output sequence can be obtained.
  • Transmitting the pre-processed output sequence further includes performing DFT transform on the pre-processed output sequence, obtaining a frequency domain symbol, and transmitting the frequency domain symbol.
  • DFT transform By performing a DFT transform on the v-layer pre-processed output sequence, a v-layer frequency symbol can be obtained.
  • transmitting the pre-processed output sequence may further include pre-coding the frequency domain symbols, obtaining a mapping symbol, and transmitting the mapping symbol.
  • the v-layer frequency symbols are linearly transformed to obtain mapping symbols corresponding to the antenna ports, and the mapping symbols corresponding to the antenna ports are transmitted at the respective antenna ports.
  • the mapping symbol is data that can be sent on the antenna port, or data that can be sent on the antenna port after being processed. It can also be called another name, which is not limited in this application.
  • the precoding matrix is configured, and the v layer frequency symbol and the coding matrix are multiplied to obtain mapping symbols corresponding to the antenna ports.
  • transmitting the pre-processed output sequence may further comprise mapping the mapping symbols to the resource elements and transmitting the corresponding mapping symbols at the resource elements.
  • mapping symbol corresponding to the antenna port is mapped to a corresponding resource element, and the resource element of the antenna port transmits a corresponding mapping symbol.
  • one of the mapped symbols is mapped to a resource element at which the symbol is transmitted.
  • the input data can be processed using the processing flow shown in FIG.
  • the processing flow shown in FIG. 4 may include interleaving/scrambling, modulation, layer mapping, and pre-processing, and may also include precoding and resource element mapping.
  • the methods of interleaving/scrambling, modulating, layer mapping, pre-processing, and resource element mapping are similar to the corresponding descriptions in the processing flow involved in FIG. 3, and details are not described herein again. Based on the processing flow shown in FIG.
  • the sending the pre-processed output sequence may further include pre-coding the pre-processed output sequence, obtaining a mapping symbol, and transmitting the mapping symbol.
  • the symbols in the v-layer pre-processing output sequence are linearly transformed to obtain mapping symbols corresponding to the antenna ports, and corresponding mapping symbols are transmitted in each antenna port.
  • the mapping symbol is data that can be sent on the antenna port, or data that can be sent on the antenna port after being processed. It can also be called another name, which is not limited in this application.
  • the precoding matrix is configured, and the mapping symbols corresponding to the antenna ports are obtained by multiplying the symbols in the v layer preprocessing output sequence and the precoding matrix.
  • the transmission waveform is DFT-s-OFDM, which may also be described as performing DFT or enabling DFT in the transmission processing flow, as shown in the processing flow shown in FIG. 3; the transmission waveform is CP-OFDM and may also be described as The DFT is not performed or the DFT is not enabled in the transmission processing flow, as shown in the processing flow shown in FIG.
  • the DFT is used to transform data from the time domain to the frequency domain, which may also be referred to as transform precoding or other names, which are not limited in this application.
  • FIG. 5 is a second data transmission method according to an embodiment of the present application.
  • the transmitting end determines a pre-processing output according to a mapping relationship between a pre-processed input bit and a pre-processed input bit and a pre-processed output sequence.
  • the sequence maps the pre-processed output sequence to the v-layer to obtain a layer-mapped output symbol, and the layer-layer map outputs symbols.
  • v is a positive integer.
  • the pre-processed input bits may be x bits, and the combined value of the x bits may be any of M values.
  • the mapping relationship between the pre-processed input bits and the pre-processed output sequence can be described as a mapping relationship between the M values and the M pre-processed output sequences.
  • x and M are positive integers
  • a pre-processed output sequence includes a positive integer number of symbols.
  • a pre-processed output sequence includes at least 2 symbols.
  • the number of symbols in different pre-processed output sequences may be the same, and the number of symbols in different pre-processed output sequences may also be different.
  • the M pre-processed output sequences are included in the first pre-processed codebook, and may also be described as including the M pre-processed output sequences in the first pre-processed codebook.
  • the first pre-processing codebook is included in the pre-processing codebook set, and may also be described as including the first pre-processing codebook in the pre-processing codebook set.
  • the mapping relationship between the pre-processed input bits and the pre-processed output sequence can be described by Table 4.
  • the preprocessed output sequences corresponding to the two values are as shown in Table 3.
  • the pre-processed output sequence, the pre-processed codebook, and the pre-processed codebook set in different methods or different technical solutions may be independently set, that is, the pre-processed output sequence in different data transmission methods
  • the processing codebook and the pre-processing codebook set may be the same or different, and the application does not limit the application.
  • the values of the same technical features may be the same or different in different methods or different technical solutions, and the present application is not limited.
  • the mapping relationship between the pre-processed input bits and the pre-processed output sequence can be described by Table 5.
  • the combined value of each of the two pre-processing input bits can be any of four values, which are [b1, b1], [b1, b2], [b2, respectively. B2] and [b2, b1].
  • the preprocessed output sequences corresponding to the four values are as shown in Table 4.
  • the pre-processed output symbol in the pre-processed output sequence is mapped to the v layer by using a symbol included in one pre-processed output sequence as a mapping unit.
  • the symbol included in one pre-processed output sequence is a mapping unit, which may also be described as a pre-processing output sequence as a mapping unit.
  • the second data transmission method provided by the embodiment of the present application configures a mapping relationship between the pre-processed input bits and the pre-processed output sequence, and the mapping relationship does not need to be limited to a linear relationship, and more low-correlation pre-processed output sequences may be introduced.
  • more low-correlation preprocessing codebooks can be introduced.
  • the pre-processing codebook is independently configured for different UEs, the number of UE multiplexing can be increased while satisfying low interference between UEs, thereby improving the system transmission rate.
  • the transmitting end may send a pre-processed output sequence using a waveform.
  • the transmitting end transmitting layer mapping symbol may further include performing DFT transform on the layer mapping symbol, obtaining a frequency domain symbol, and transmitting the frequency domain symbol.
  • the input data can be processed using the processing flow shown in FIG. 6.
  • the processing flow shown in FIG. 6 may include interleaving/scrambling, preprocessing, layer mapping, and DFT, and may also include precoding and resource element mapping.
  • the input data may be Q codewords, and one of the Q codewords may be a data block obtained by performing forward error correction coding on a set of input bits.
  • the interleaving/scrambling, spatial domain precoding, and resource element mapping methods are similar to the corresponding descriptions in the processing flow involved in FIG. 3, and are not described herein again.
  • the scrambling bits are preprocessed to obtain a preprocessed output sequence.
  • the preprocessing method is a preprocessing method in the second data transmission method provided by the embodiment of the present application.
  • the scrambling bit corresponding to each codeword is used as the pre-processing input bit, and the code word corresponding is determined according to the mapping relationship between the pre-processed input bit and the pre-processed input bit and the pre-processed output sequence. Preprocess the output sequence.
  • the pre-processed output sequence is mapped to the v-layer to obtain a layer map symbol.
  • the layer mapping method is a layer mapping method in the second data transmission method provided by the embodiment of the present application. Specifically, for the pre-processed output sequence corresponding to each codeword, the pre-processed output symbols in the pre-processed output sequence are layer-mapped by using a symbol included in one pre-processed output sequence as a mapping unit. Wherein, the symbol included in one preprocessed output sequence is a mapping unit and can also be described as a pre-processing output sequence as a mapping unit.
  • the layer mapping method in the second data transmission method can also be described as layer mapping with the granularity of the preprocessed output sequence.
  • the number of codewords is 1, and a set of scrambling bits corresponding to the codeword is a set of pre-processed input bits B (0) , wherein Preprocessing the number of pre-processed input bits in the input bits for the set.
  • the transmitting end determines the pre-processed output sequence according to the mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence, and obtains a set of pre-processed output sequences E. (0) , where The number of pre-processed output sequences in the output sequence is preprocessed for the set.
  • a set of pre-processed output symbols S (0) corresponding to the set of pre-processed output sequences is obtained according to the symbols included in the pre-processed output sequences of the set of pre-processed output sequences.
  • the symbols included in each pre-processed output sequence of the set of pre-processed output sequences are combined to obtain a set of pre-processed output symbols S (0) corresponding to the set of pre-processed output sequences. among them, The number of symbols to be output for preprocessing in S (0) .
  • s (0) (i) is a symbol in a preprocessed output sequence in E (0)
  • i is 0 to Any one of the integers.
  • Table 6 shows an example of mapping S (0) to the v layer to get the layer map output symbols.
  • the transmitting end maps the pre-processed output symbols in S (0) to the v-layer with k (0) symbols as one mapping unit. specifically:
  • the k (0) symbols are used as a mapping unit, and the pre-processed output symbols in S (0) are mapped to the layer 1 to obtain a layer 1 mapping symbol, which is included in the layer mapping symbol.
  • mapping unit the value of the ik (0) + j symbols in the layer 1 mapping symbol c (0) (ik (0) + j) is equal to the 2ik (0) + j in S (0)
  • mapping unit When v is equal to 3, k (0) symbols are used as a mapping unit, and the pre-processed output symbols in S (0) are mapped to the 3 layers to obtain a 3-layer layer mapping symbol, and each layer layer mapping symbol is included.
  • Mapping unit the value of the ik (0) + j symbols in the layer 1 mapping symbol c (0) (ik (0) + j) is equal to the 3ik (0) + j in S (0)
  • the value s (0) (3ik (0) + j) the value of the ik (0) + j symbols in the layer 2 mapping symbol c (1) (ik (0) + j) is equal to S (0) 3ik (0) + k (0) + j values s (0) (3ik (0) + k (0) + j)
  • the ik (0) + j in the layer 3 mapping symbol the first 3ik (0) symbol values c (2) (ik (0 ) + j) equals S (0) is + 2k (0) + j values
  • mapping unit When v is equal to 4, k (0) symbols are used as a mapping unit, and the pre-processed output symbols in S (0) are mapped to 4 layers to obtain 4 layers of layer mapping symbols, and each layer layer mapping symbol is included.
  • Mapping unit the value of the ik (0) + j symbols in the layer 1 mapping symbol c (0) (ik (0) + j) is equal to the 4ik (0) + j in S (0)
  • the value s (0) (4ik (0) + j) the value of the ik (0) + j symbols in the layer 2 mapping symbol c (1) (ik (0) + j) is equal to S (0) 4ik (0) + k (0) + j values s (0) (4ik (0) + k (0) + j)
  • the ik (0) + j in the layer 3 mapping symbol the first 4ik (0) symbol values c (2) (ik (0 ) + j) equals S (0) is + 2k (0) + j values s
  • the number of codewords is 2, and the two sets of scrambling bits corresponding to the two codewords are respectively preprocessed input bits B (0) and B (1) , wherein The number of input bits for preprocessing in B (0) , The number of input bits for the preprocessing in B (1) .
  • the transmitting end determines the pre-processed output sequence based on the mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence.
  • the sender obtains a set of preprocessed output sequences E (0) , where The number of pre-processed output sequences in the output sequence is preprocessed for the set.
  • a set of pre-processed output symbols S (0) corresponding to the set of pre-processed output sequences is obtained according to the symbols included in the pre-processed output sequences of the set of pre-processed output sequences.
  • the symbols included in each pre-processed output sequence of the set of pre-processed output sequences are combined to obtain a set of pre-processed output symbols S (0) corresponding to the set of pre-processed output sequences.
  • s (0) (i) is a symbol in a preprocessed output sequence in E (0)
  • i is 0 to Any one of the integers.
  • k (0) symbols are included in each preprocessed output sequence in E (0) , then
  • the sender obtains a set of preprocessed output sequences E (1) , where The number of pre-processed output sequences in the output sequence is preprocessed for the set.
  • a set of pre-processed output symbols S (1) corresponding to the set of pre-processed output sequences is obtained according to the symbols included in each pre-processed output sequence of the set of pre-processed output sequences.
  • the symbols included in each pre-processed output sequence of the set of pre-processed output sequences are combined to obtain a set of pre-processed output symbols S (1) corresponding to the set of pre-processed output sequences. among them, The number of symbols to be output for preprocessing in S (1) .
  • s (1) (i) is a symbol in a preprocessed output sequence in E (1) , i is 0 to Any one of the integers.
  • k (1) symbols are included in each preprocessed output sequence in E (1) , then
  • Table 7 shows an example of mapping S (0) and S (1) to the v layer to obtain a layer map output symbol.
  • the transmitting end maps the pre-processed output symbols in S (0) and S (1) to the v-layer with k symbols as one mapping unit, and obtains a v-layer layer mapping symbol.
  • the nth layer mapping symbol in the v layer layer mapping symbol is c (n-1) , and the value of n is 1 to v.
  • mapping unit When v is equal to 2, the k symbols are used as a mapping unit, and the pre-processed output symbols in S (0) and S (1) are mapped to the 2 layers, and 2 layer mapping symbols are obtained, and each layer layer mapping symbol is included. Mapping units.
  • k-symbols are used as a mapping unit, and pre-processed output symbols in S (0) and S (1) are mapped to layer 3, and a 3-layer layer mapping symbol is obtained, and each layer layer mapping symbol is included.
  • mapping the value c of the first layer in the first symbol ik + j th symbol (0) (ik + j) equals S (0) in the first ik + j values s (0) (2ik + j the first 2ik + k + j values s (0) (2ik + k ), the second layer of the map symbol ik + j th symbol values c (1) (ik + j ) equals S (0) in + j), the third layer of the map symbol ik + j th symbol values c (2) (ik + j ) is equal to S (2ik + j values of s 1) in (1) (2ik + j ), a fourth layer of the map symbol ik + j th symbol values c (3) (
  • the transmitting layer mapping symbol further includes performing DFT transform on the layer mapping symbol, obtaining a frequency domain symbol, and transmitting the frequency domain symbol.
  • DFT transform By performing a DFT transform on the v layer layer mapping symbols, a v layer frequency symbol can be obtained.
  • the input data can be processed using the processing flow shown in FIG.
  • the processing flow shown in FIG. 7 may include interleaving/scrambling, preprocessing, layer mapping, and may also include precoding and resource element mapping.
  • the interleaving/scrambling, pre-processing, layer mapping, and resource element mapping methods are similar to the corresponding descriptions in the processing flow involved in FIG. 6, and are not described herein again.
  • the transmission layer mapping symbol may further include pre-precoding the layer mapping symbol, obtaining a precoding symbol, and transmitting the precoding symbol. .
  • each layer layer mapping symbol is linearly transformed to obtain mapping symbols corresponding to each antenna port, and corresponding mapping symbols are transmitted at each antenna port.
  • the mapping symbol is data that can be sent on the antenna port, or data that can be sent on the antenna port after being processed. It can also be called another name, which is not limited in this application.
  • the precoding matrix is configured, and the mapping symbols corresponding to the antenna ports are obtained by multiplying the v layer layer mapping symbols and the precoding matrix.
  • FIG. 8 is a third data transmission method according to an embodiment of the present application.
  • the transmitting end maps input bits to the v layer to obtain layer mapping output bits, where v is a positive integer. For each layer output bit in the layer mapping output bit, the transmitting end determines the pre-processed output sequence according to the mapping relationship between the pre-processed input bit and the pre-processed input bit and the pre-processed output sequence, and transmits the pre-processed output sequence.
  • the transmitting end For each layer output bit in the layer mapping output bit, uses the layer output bit as a pre-processing input bit, and determines the pre-processing output according to the mapping relationship between the pre-processed input bit and the pre-processed input bit and the pre-processed output sequence. sequence.
  • the third method provided by the embodiment of the present application configures a mapping relationship between the pre-processed input bits and the pre-processed output sequence, and the mapping relationship does not need to be limited to a linear relationship, and more low-correlation pre-processed output sequences may be introduced. More low correlation preprocessing codebooks can be introduced. When the pre-processing codebook is independently configured for different UEs, the number of UE multiplexing can be increased while satisfying low interference between UEs.
  • the transmitting end may send a pre-processed output sequence using a waveform.
  • the transmitting end transmitting the pre-processed output sequence may further include performing DFT transform on the pre-processed output sequence. Specifically, the transmitting end determines the pre-processed output sequence according to the mapping relationship between the pre-processed input symbol and the pre-processed input symbol and the pre-processed output sequence, performs DFT transform on the pre-processed output sequence, obtains a frequency domain symbol, and transmits the frequency domain symbol. . If the transmitting end uses DFT-s-OFDM to transmit data to be transmitted, the input data can be processed using the processing flow shown in FIG. The processing flow shown in FIG.
  • interleaving/scrambling may include interleaving/scrambling, layer mapping, pre-processing, and DFT, and may also include precoding and resource element mapping.
  • the interleaving/scrambling, DFT, precoding, and resource element mapping methods are similar to the corresponding descriptions in the processing flow involved in FIG. 3, and are not described herein again.
  • the scrambling bits are layer mapped to obtain layer mapping output bits.
  • the number of codewords is 1, and a set of scrambling bits corresponding to the codeword is D (0) , wherein The number of bits in the set of scrambling bits.
  • Table 8 shows an example of mapping D (0) to the v layer to obtain layer mapping output bits. As shown in Table 8:
  • the scrambling bits in D (0) are mapped to the 2 layers to obtain a 2-layer layer mapping output bit, and the value of the i-th bit in the output layer of the layer 1 mapping is x (0) (i ) is equal to the 2ith value d (0) (2i) in D (0) , the value of the i-th bit in the layer 2 mapping output bit x (1) (i) is equal to the first in D (0) 2i+1 values d (0) (2i+1), where
  • the scrambling bits in D (0) are mapped to the 3 layers to obtain a 3-layer layer mapping output bit
  • the value of the i-th bit in the output layer of the layer 1 mapping is x (0) (i ) ) is equal to the 3ith value d (0) (3i) in D (0)
  • the value of the ith bit in the layer 2 mapping output bit x (1) (i) is equal to the number in D (0) 3i+1 values d (0) (3i+1)
  • the value of the i-th bit in the layer 3 mapping output bit x (2) (i) is equal to the 3i+2 values in D (0) d (0) (3i+2)
  • the scrambling bits in D (0) are mapped to 4 layers to obtain a 4-layer layer mapping output bit
  • the value of the i-th bit in the output layer of the layer 1 mapping is x (0) (i ) is equal to the 4ith value d (0) (4i) in D (0)
  • the value of the i-th bit in the layer 2 mapping output bit x (1) (i) is equal to the first in D (0) 4i+1 values d (0) (4i+1)
  • the value of the i-th bit in the layer 3 mapping output bit x (2) (i) is equal to the 4i+2 values in D (0) d (0) (4i + 2 )
  • the fourth layer mapping output bits of the i-th bit value x (2) (i) is equal to D (0) in the first 4i + 3 values d (0) ( 4i+3), among them,
  • the number of codewords is 2, the first set of scrambling bits corresponding to the first codeword is D (0) , and the second set of scrambling bits corresponding to the second codeword is D (1).
  • Table 9 shows an example of mapping the scrambling bits to the v layer to obtain layer mapping output bits. As shown in Table 9:
  • the scrambled bit in D (0) is mapped to the first layer to obtain the layer 1 mapping output bit, and the value of the i-th bit in the output layer of the layer 1 mapping is x (0) (i) is equal to D (0) in the i-th value of d (0) (i), the scrambled bits D (1) is mapped to the second layer, the second layer obtained mapping output bits, the second layer mapping output bits of the i-th bit value x (1) (i) is equal to the i-th value D d (1) of (. 1) (i), wherein
  • the scrambled bit in D (0) is mapped to the first layer to obtain the layer 1 mapping output bit
  • the value of the i-th bit in the output layer of the layer 1 mapping is x (0) (i) is equal to D (0) in the i-th value of d (0) (i)
  • the D scrambled bits (1) is mapped to the layer 2 and layer 3, to give the second layer and the third layer Layer mapping output bit
  • the value of the i-th bit in the layer 2 mapping output bit x (1) (i) is equal to the 2ith value d (1) (2i) in D (1)
  • layer 3 mapping output bits of the i-th bit value x (2) (i) is equal to D 2i + 1 values of d (1) of (. 1) (2i + 1), wherein,
  • the scrambled bits in D (0) are mapped to the first layer and the second layer, and the first layer and the second layer layer mapping output bits are obtained, and the first layer of the layer 1 layer mapping output bits
  • the value of the bit x (0) (i) is equal to the 2ith value d (0) (2i) in D (0)
  • the value of the i-th bit in the layer 2 mapping output bit x (1) ( i) is equal to D (0) in the first 2i + 1 values of d (0) (2i + 1 )
  • the D (scrambled bits 1) mapped to layer 3 and layer 4 to give the third layer and mapping output bits of the 4-layer
  • 3-layer mapping output bits of the i-th bit value x (2) (i) is equal to 2i-th value D d (1) of (. 1) (2i)
  • the 4-layer mapping output bits of the i-th bit value x (3) (i) is equal to D 2i + 1 values of d (1) of (. 1) (2i + 1), wherein,
  • the layer map output bits are preprocessed. Specifically, each layer layer mapping output bit is separately preprocessed.
  • the processing flow shown in FIG. 10 may include interleaving/scrambling, layer mapping, and pre-processing, and may also include spatial domain coding and resource element mapping.
  • the interleaving/scrambling, layer mapping, and pre-processing methods are similar to the corresponding descriptions in the processing flow involved in FIG. 9, and are not described herein again.
  • the precoding and resource element mapping are similar to the corresponding description in the processing flow involved in FIG. 4, and will not be described again here.
  • the pre-processing codebook may be configured for the transmitting end by using a pre-configuration or a signaling configuration.
  • the receiving end sends signaling to the transmitting end, where the signaling carries indication information, which is used to indicate that the receiving end is a pre-processed codebook configured by the transmitting end;
  • the signaling sent by the receiving end determines the pre-processed codebook of the transmitting end by using the signaling.
  • the sender can use the pre-processed codebook of the sender for pre-processing.
  • the transmitting end in the method is the receiving end when performing the signaling transmission
  • the receiving end in the method is the transmitting end when performing the signaling transmission.
  • the signaling may include an identifier of the pre-processed codebook.
  • one pre-processed codebook in the pre-processed codebook set corresponds to an identifier, which is referred to as an identifier of the pre-processed codebook.
  • the sending end receives the signaling sent by the receiving end, where the signaling includes the identifier of the pre-processing codebook, and the sending end uses the pre-processing codebook corresponding to the identifier as the pre-processing codebook of the sending end.
  • the receiving end is a base station
  • the transmitting end is a UE
  • the receiving end is a first UE
  • the transmitting end is a second UE
  • the receiving end is a first base station
  • the transmitting end is a second base station
  • a pre-processing codebook can be independently configured for the transmitting end.
  • the transmitting end and the receiving end can respectively use a plurality of transmitting antennas and receiving antennas, so that a plurality of spaces can be formed, and the plurality of spaces can be spatially multiplexed.
  • the plurality of spaces may each correspond to one air interface resource, and data transmission may be performed on the multiple air interface resources at the same time.
  • the plurality of air interface resources may correspond to the same frequency resource.
  • the high-rate data stream can be divided into multiple low-rate sub-data streams at the transmitting end, and different sub-data streams are transmitted on the same frequency resource on different transmitting antennas.
  • each sub-data stream is also referred to as a spatial layer, or a spatial sub-channel. Therefore, when the space division multiplexing technology is used, in addition to the time domain dimension and the frequency domain dimension, the spatial domain dimension is added, so that the signals of different spatial layers can be distinguished from each other, thereby increasing the system transmission rate.
  • the transmitting end may determine a pre-processed codebook, perform corresponding pre-processing using the pre-processed codebook, and send signaling to the receiving end, and indicate the pre-use of the signaling by using the signaling.
  • the signaling may include an identifier of the pre-processed codebook.
  • one pre-processed codebook in the pre-processed codebook set corresponds to an identifier, which is referred to as an identifier of the pre-processed codebook.
  • the sending end sends signaling to the receiving end, where the signaling includes the identifier of the pre-processing codebook, and the receiving end uses the pre-processing codebook corresponding to the identifier as the pre-processing codebook of the transmitting end.
  • the receiving end is a base station
  • the transmitting end is a UE
  • the receiving end is a first UE
  • the transmitting end is a second UE
  • the receiving end is a first base station
  • the transmitting end is a second base station
  • the transmitting end may independently determine a pre-processed codebook for each spatial layer, and send signaling to the receiving end, and the pre-processing codebook corresponding to each spatial layer is indicated by the signaling.
  • the transmitting end may determine the pre-processing codebook set according to the transmission waveform. If the sending waveform is the first waveform, the transmitting end determines that the pre-processing codebook set is the first pre-processing codebook set; if the sending waveform is the second waveform, the transmitting end determines that the pre-processing codebook set is the second pre-processing codebook set; The first pre-processing codebook set is different from the second pre-processing codebook set.
  • the difference between the first pre-processing codebook set and the second pre-processing codebook set may also be described as: at least one pre-processing codebook in the first pre-processing codebook set is not included in the second pre-processing codebook set, and/ Or at least one pre-processing codebook in the second pre-processing codebook set is not included in the first pre-processing codebook set.
  • the transmitting end determines the pre-processing codebook set based on the transmission waveform, which can satisfy the requirement of the data to be transmitted by the transmission waveform, thereby improving the data transmission efficiency.
  • the pre-processing codebook set includes a constant modulus codebook; if the transmission waveform is CP-OFDM, the pre-processing codebook set includes a sparse codebook.
  • the modulo of each symbol in the sequence is the same.
  • the modulus of the symbol is Where j is an imaginary unit and a and b are real numbers.
  • the values of several symbols in the sequence are zero.
  • DFT-s-OFDM requires that the transmitted data itself have a lower peak-to-average power ratio (PAPR), and the constant modulus codebook can have a low PAPR.
  • PAPR peak-to-average power ratio
  • the output power of the power amplifier can be larger and more efficient, which is beneficial to improve network coverage.
  • CP-OFDM requires a low correlation between the transmitted data, and a low correlation between the codebooks of the sparse codebook.
  • a low correlation codebook is advantageous for reducing interference between UEs, and can increase the number of UE multiplexing, thereby increasing the system transmission rate.
  • the receiving end may send signaling to the sending end, where the signaling carries waveform indication information, where the receiving end is configured to send a transmitting waveform configured by the transmitting end, and the transmitting end receives the signaling sent by the receiving end.
  • the transmission waveform is determined by the signaling. It should be noted that, at this time, the transmitting end in the method is the receiving end when performing the signaling transmission, and the receiving end in the method is the transmitting end when performing the signaling transmission.
  • the signaling may include an identifier of the transmitted waveform.
  • one of the available transmit waveforms corresponds to an identification, which is referred to as an identification of the transmitted waveform.
  • the receiving end sends signaling to the transmitting end, where the signaling includes an identifier of the sending waveform, and the transmitting end may send the data by using the sending waveform corresponding to the identifier.
  • the transmit waveform can be independently configured for the transmit end corresponding to each spatial layer.
  • the transmitting end may determine the transmit waveform, send signaling to the receiving end, and indicate the transmit waveform used by the signaling.
  • the sending waveform may be used by the transmitting end to send data, where the signaling may include an identifier of the transmitted waveform.
  • one of the available transmit waveforms corresponds to an identification, which is referred to as an identification of the transmitted waveform.
  • the sending end sends signaling to the receiving end, where the signaling includes an identifier of the sending waveform, and the receiving end may send the data by using the sending waveform corresponding to the identifier.
  • the transmitting end may independently determine a transmission waveform for each spatial layer, and send signaling to the receiving end, and the signaling waveform corresponding to each spatial layer is indicated by the signaling.
  • the receiving end is a base station
  • the transmitting end is a UE
  • the receiving end is a first UE
  • the transmitting end is a second UE
  • the receiving end is a first base station
  • the transmitting end is a second base station
  • the embodiment of the present application provides a codebook generation method, which may be any type of codebook, which is not limited in this application.
  • the codebook can be a pre-processed codebook or other codebook.
  • the codebook is used as a pre-processed codebook, and the codebook generation method is a pre-processed codebook generation method as an example.
  • the preprocessing codebook is generated by: the first preprocessing codebook includes R sequences, and the relationship between the R sequences and the sequence in the second preprocessing codebook is a linear relationship, where R is an integer greater than or equal to 1. .
  • R is an integer greater than or equal to 1.
  • any one of the R sequences may be S i , -S i , S i or -jS i , the sequence S i is a sequence in the second pre-processing codebook, and j is an imaginary unit.
  • the values of the different sequences in the R sequences may be the same or different, and the present application is not limited thereto.
  • the second pre-processing codebook includes two sequences, denoted as ⁇ S n0 , S n1 ⁇ , and any one of the first pre-processed codebooks may be S n0 , -S n0 , jS n0 , -jS n0 , S n1 , -S n1 , jS n1 or -jS n1 , j is an imaginary unit.
  • the second pre-processing codebook includes four sequences, denoted as ⁇ S n0 , S n1 , S n2 , S n3 ⁇ , and any one of the first pre-processed codebooks may be S n0 , -S n0 , jS n0 , -jS n0 , S n1 , -S n1 , jS n1 , -jS n1 , S n2 , -S n2 , jS n2 , -jS n2 , S n3 , -S n3 , jS n3 or - jS n3 , j is an imaginary unit.
  • the first pre-processing codebook may be the pre-processing codebook used in the pre-processing of the first to third data transmission methods provided by the embodiments of the present application, and may also be provided in the embodiment of the present application.
  • the second pre-processing codebook may be the pre-processing codebook used in the pre-processing of the first to third data transmission methods provided by the embodiments of the present application, and may also be provided by the embodiment of the present application.
  • the codebook in the preprocessed codebook set in the first to third data transmission methods may be the pre-processing codebook used in the pre-processing of the first to third data transmission methods provided by the embodiments of the present application, and may also be provided by the embodiment of the present application.
  • the codebook in the preprocessed codebook set in the first to third data transmission methods may be the pre-processing codebook used in the pre-processing of the first to third data transmission methods provided by the embodiments of the present application, and may also be provided by the embodiment of the present application.
  • the fourth embodiment of the present application provides a fourth data transmission method.
  • the transmitting end may perform pre-processing on the input data based on the foregoing first pre-processing codebook and/or the second pre-processing codebook to obtain a pre-processed output sequence, and send the Preprocess the output sequence.
  • the number of pre-processed codebooks can be increased, so that the number of UE multiplexing in the NOMA system can be increased, thereby increasing the system data rate. Further, the generated first pre-processed codebook can also maintain the characteristics of the second pre-processed codebook. Wherein, the number of pre-processing codebooks is increased. Illustratively, when the second pre-processing codebook satisfies the low PAPR, the first pre-processing codebook can also satisfy the low PAPR. In another example, when the pre-processed sequence of the second pre-processed codebook satisfies the low correlation, the pre-processed sequence of the first pre-processed codebook also satisfies the low correlation.
  • the transmitting end and the receiving end may include a hardware structure and/or a software module, and implement the foregoing functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • One of the above functions is performed in a hardware structure, a software module, or a hardware structure plus a software module, depending on the specific application and design constraints of the technical solution.
  • FIG. 11 is a schematic structural diagram of a device 1100 according to an embodiment of the present application.
  • the device 1100 can be a transmitting end, and can implement the function of the sending end in the first data transmission method provided by the embodiment of the present application.
  • the device 1100 can also be a device in the sending end, and the device can support the transmitting end to implement the embodiment of the present application.
  • the device 1100 can be a hardware structure, a software module, or a hardware structure plus a software module.
  • Device 1100 can be implemented by a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.
  • device 1100 includes a pre-processing module 1102 and a transceiver module 1104, which is coupled to a transceiver module 1104.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form for information interaction between devices, units or modules.
  • the pre-processing module 1102 is configured to pre-process the pre-processed input symbols to obtain a pre-processed output sequence.
  • the preprocessing method is the same as the corresponding description in the method involved in FIG. 2, and details are not described herein again.
  • the pre-processing output sequence is a sequence in the first pre-processing codebook, and the pre-processing module 1102 is further configured to determine a pre-processing codebook set according to the transmission waveform, where the first pre-processing codebook is a codebook in the pre-processing codebook set.
  • the description of the method for determining the pre-processing codebook set according to the transmission waveform and the description of the first pre-processing codebook are the same as those in the method provided by the embodiment of the present application, and details are not described herein again.
  • the transceiver module 1104 is configured to send a pre-processed output sequence.
  • the device 1100 further includes a DFT module 1106, configured to perform DFT transform on the pre-processed output sequence to obtain a frequency domain symbol, and the transceiver module 1104 is specifically configured to send the frequency domain symbol.
  • the DFT transform method is the same as the corresponding description in the method in FIG. 3, and details are not described herein again.
  • the DFT module 1106 can be coupled to a transceiver module 1104, which can also be coupled to a pre-processing module 1102. If device 1100 is a chip, transceiver module 1104 can be a communication interface between the chip and an external device, where the external device can be a circuit, device, or other device.
  • the transceiver module 1104 is further configured to receive control information, where the control information includes at least one of a modulation mode identifier, a codebook index, and waveform information. If the control information includes a modulation mode identifier, the pre-processing module is further configured to determine, according to the modulation mode identifier, a mapping relationship between the pre-processed input symbol and the pre-processed output sequence. If the control information includes a codebook index, the pre-processing module is further configured to determine, according to the codebook index, the first pre-processed codebook from the pre-processed codebook set. If the control information includes waveform information, the pre-processing module is further configured to determine the transmitted waveform based on the waveform information.
  • FIG. 12 is a schematic structural diagram of an apparatus 1200 according to an embodiment of the present application.
  • the device 1200 can be a transmitting end, and can implement the function of the sending end in the second data transmission method provided by the embodiment of the present application.
  • the device 1200 can also be a device in the sending end, and the device can support the transmitting end to implement the embodiment of the present application.
  • the device 1200 can be a hardware structure, a software module, or a hardware structure plus a software module.
  • Device 1200 can be implemented by a chip system.
  • the apparatus 1200 includes a pre-processing module 1202, a layer mapping module 1204, and a transceiver module 1206.
  • the pre-processing module 1202 and the layer mapping module 1204 are coupled, and the pre-processing module 1202 and the transceiver module 1206 are coupled.
  • the pre-processing module 1202 is configured to pre-process the pre-processed input bits to obtain a pre-processed output sequence.
  • the preprocessing method is the same as the corresponding description in the method involved in FIG. 5, and details are not described herein again.
  • the pre-processing output sequence is a sequence in the first pre-processing codebook, and the pre-processing module 1202 is further configured to determine a pre-processing codebook set according to the transmission waveform, where the first pre-processing codebook is a codebook in the pre-processing codebook set.
  • the description of the method for determining the pre-processing codebook set according to the transmission waveform and the description of the first pre-processing codebook are the same as those in the method provided by the embodiment of the present application, and details are not described herein again.
  • the layer mapping module 1204 is configured to map the pre-processed output sequence to the v-layer to obtain a layer-mapped output symbol, where v is a positive integer.
  • the method of mapping the layer is the same as that in the method involved in FIG. 5, and details are not described herein again.
  • the transceiver module 1206 is configured to send a pre-processed output sequence.
  • the apparatus 1200 further includes a DFT module 1208, configured to perform DFT transform on the layer mapped output symbols to obtain frequency domain symbols, and the transceiver module 1206 is specifically configured to send the frequency domain symbols.
  • the DFT transform method is the same as the corresponding description in the method in FIG. 5, and details are not described herein again.
  • DFT module 1208 can be coupled to transceiver module 1206, which can also be coupled to pre-processing module 1202. If device 1200 is a chip, transceiver module 1206 can be a communication interface between the chip and an external device, where the external device can be a circuit, device, or other device.
  • the transceiver module 1206 can also be configured to receive control information, where the control information includes at least one of a codebook index and waveform information. If the control information includes a codebook index, the pre-processing module is further configured to determine, according to the codebook index, the first pre-processed codebook from the pre-processed codebook set. If the control information includes waveform information, the pre-processing module is further configured to determine the transmitted waveform based on the waveform information.
  • FIG. 13 is a schematic structural diagram of an apparatus 1300 according to an embodiment of the present application.
  • the device 1300 can be a transmitting end, and can implement the function of the sending end in the third data transmission method provided by the embodiment of the present application.
  • the device 1300 can also be a device in the sending end, and the device can support the transmitting end to implement the embodiment of the present application.
  • the device 1300 can be a hardware structure, a software module, or a hardware structure plus a software module.
  • Device 1300 can be implemented by a chip system.
  • the apparatus 1300 includes a pre-processing module 1302, a layer mapping module 1304, and a transceiver module 1306.
  • the pre-processing module 1302 and the layer mapping module 1304 are coupled, and the pre-processing module 1302 and the transceiver module 1306 are coupled.
  • the layer mapping module 1304 is configured to map the input bits to the v layer to obtain layer mapped output bits, where v is a positive integer.
  • the pre-processing module 1302 is configured to output bits for each of the layer mapping output bits, and determine the pre-processed output sequence according to the mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence.
  • the preprocessing method is the same as the corresponding description in the method in FIG. 8 and will not be described here.
  • the pre-processing output sequence is a sequence in the first pre-processing codebook, and the pre-processing module 1302 is further configured to determine a pre-processing codebook set according to the transmission waveform, where the first pre-processing codebook is a codebook in the pre-processing codebook set.
  • the method for determining the pre-processing codebook set according to the transmission waveform is the same as the corresponding description in the method provided by the embodiment of the present application, and details are not described herein again.
  • the transceiver module 1306 is the same as the transceiver module 1104.
  • the apparatus 1300 also includes a DFT module 1308, which is identical to the DFT module 1106.
  • FIG. 14 is a schematic structural diagram of an apparatus 1400 according to an embodiment of the present application.
  • the device 1400 can be a transmitting end, and can implement the function of the sending end in the method provided by the embodiment of the present application.
  • the device 1400 can also be a device in the sending end, and the device can support the sending end to implement the method provided in the embodiment of the present application. The function of the end.
  • the apparatus 1400 includes a processing system 1402 for implementing or for supporting the transmitting end to implement the function of the transmitting end in the method provided by the embodiment of the present application.
  • Processing system 1402 can be a circuit that can be implemented by a chip system.
  • the processing system 1402 includes at least one processor 1422, which can be used to implement or support the transmitting end to implement the function of the sending end in the method provided by the embodiment of the present application.
  • the processor 1422 may also be used to manage other devices included in the processing system 1402 when the processing system 1402 includes other devices than the processor.
  • the other devices may be the memory 1424, the bus 1426, and the bus described below. At least one of the interfaces 1428.
  • the processor may be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processing (DSP), a microprocessor, A microcontroller, a programmable logic device (PLD), or any combination thereof.
  • CPU central processing unit
  • NP general-purpose processor network processor
  • DSP digital signal processing
  • microprocessor a microprocessor
  • a microcontroller a programmable logic device (PLD), or any combination thereof.
  • Processing system 1402 may also include a memory 1424 for storing program instructions and/or data. If processing system 1402 includes memory 1424, processor 1422 can be coupled to memory 1424.
  • the memory includes a volatile memory, such as a random-access memory (RAM); the memory may also include a non-volatile memory, such as a flash.
  • RAM random-access memory
  • HDD hard disk drive
  • SSD solid-state drive
  • the processor 1422 can operate in conjunction with the memory 1424.
  • the processor 1422 can execute program instructions stored in the memory 1424.
  • the function of the sender in the method provided by the embodiment of the present application may be implemented or supported.
  • Processor 1422 may also read data stored in memory 1424.
  • Memory 1424 may also store data obtained by processor 1422 when executing program instructions.
  • the processor 1422 can perform mapping relationship between the preprocessed input symbol and the preprocessed input symbol and the preprocessed output sequence. Determining a pre-processed output sequence; transmitting the pre-processed output sequence.
  • the processor 1422 can map according to the pre-processed input bit and the pre-processed input bit and the pre-processed output sequence.
  • the relationship determines a pre-processed output sequence, maps the pre-processed output sequence to the v-layer, obtains a layer-mapped output symbol, and transmits the layer-mapped output symbol.
  • v is a positive integer.
  • the processor 1422 may map the input bit to the v layer to obtain a layer mapping output bit, where v is A positive integer. For each of the layer mapping output bits, the processor 1422 may determine the pre-processed output sequence and transmit the pre-processed output sequence according to the mapping relationship between the pre-processed input bits and the pre-processed input bits and the pre-processed output sequence.
  • the processor 1422 When the processor 1422 implements or supports the transmitting end to implement the fourth data transmission method provided by the embodiment of the present application, the processor performs pre-processing on the input data based on the first pre-processing codebook and/or the second pre-processing codebook to obtain a pre- The output sequence is processed and the preprocessed output sequence is sent.
  • the first pre-processing codebook includes R sequences, and the relationship between the R sequences and the sequence in the second pre-processing codebook is a linear relationship, and R is an integer greater than or equal to 1.
  • One of the R sequences is S i , -S i , S i or -jS i , where j is an imaginary unit and the sequence S i is a sequence in the second pre-processing codebook.
  • Processing system 1402 may also include a bus interface 1428 for providing an interface between bus 1426 and other devices.
  • the device 1400 may also include a transceiver 1406 for communicating over a transmission medium with other communication devices such that other devices in the device 1400 can communicate with other communication devices.
  • the other device may be the processing system 1402.
  • other devices in device 1400 may utilize transceiver 1406 to communicate with other communication devices to receive and/or transmit corresponding information. It can also be described that other devices in device 1400 may receive corresponding information, wherein the corresponding information is received by transceiver 1406 via a transmission medium, which may be via bus interface 1428 or through bus interface 1428 and bus 1426.
  • Interacting between the transceiver 1406 and other devices in the device 1400; and/or other devices in the device 1400 may transmit corresponding information, wherein the corresponding information is transmitted by the transceiver 1406 over the transmission medium, the corresponding The information can be exchanged between the transceiver 1406 and other devices in the device 1400 via the bus interface 1428 or through the bus interface 1428 and the bus 1426.
  • the device 1400 may also include a user interface 1404, which is an interface between the user and the device 1400, possibly for user interaction with the device 1400.
  • user interface 1404 may be at least one of a keyboard, a mouse, a display, a speaker, a microphone, and a joystick.
  • the processing system 1402 includes a processor 1422, and may further include at least one of a memory 1424, a bus 1426, and a bus interface 1428 for implementing the method provided by the embodiments of the present application.
  • Processing system 1402 is also within the scope of the present application.
  • the module division of the device is a logical function division, and the actual implementation may have another division manner.
  • each functional module of the device may be integrated into one module, or each functional module may exist separately, or two or more functional modules may be integrated into one module.
  • the method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, an SSD) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a digital video disc (DVD)
  • a semiconductor medium eg, an SSD

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Abstract

本申请提供了一种数据传输方法和装置。其中，该方法包括：发送端根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列；发送该预处理输出序列。该预处理输出序列为预处理码本中的序列。通过本申请提供的数据传输方法，可以在多址通信系统中增加UE复用数，提高系统传输速率。

Description

数据传输方法和装置
本申请要求于2017年10月30日提交中国国家知识产权局、申请号为201711029427.4、申请名称为“数据传输方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及多址接入方法和装置。
背景技术
在无线通信系统中，可以引入多址技术。在支持多址的无线通信系统中，可以支持多个终端接入相同的网络设备，和该网络设备进行数据传输。基于正交性，多址可以包括正交多址和非正交多址(non-orthogonal multiple access，NOMA)；基于资源复用方式，多址可以包括码分多址(code division multiple access，CDMA)、时分多址(time division multiple access，TDMA)、频分多址(frequency division multiple access，FDMA)和空分多址(space division multiple access，SDMA)。
随着无线通信技术的发展，在支持多址的无线通信系统中，接入终端的数量持续增加，网络设备和终端间的连接数持续增加。因此，在支持多址的无线通信系统中，需要研究如何支持更多的连接数。
发明内容
第一方面，本申请提供了一种数据传输方法，包括：根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列；发送该预处理输出序列。通过该设计，配置预处理输入符号与预处理输出序列间的映射关系，该映射关系无需限制为线性关系，可以引入更多的低相关的预处理输出序列，从而可以引入更多的低相关的预处理码本。当为不同的UE独立配置预处理码本时，可以在满足UE间低干扰的同时增加UE复用数，从而可以提高系统传输速率。
第二方面，本申请提供了一种数据传输方法，包括：根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，将预处理输出序列映射至v层，得到层映射输出符号，其中，v为正整数，预处理输出序列中包括至少2个符号；发送所述层映射输出符号。通过该设计，可以引入更多的低相关的预处理输出序列，从而可以引入更多的低相关的预处理码本。当为不同的UE独立配置预处理码本时，可以在满足UE间低干扰的同时增加UE复用数，从而可以提高系统传输速率。
第三方面，本申请提供了一种数据传输方法，包括：将输入比特映射至v层，得到层映射输出比特，其中，v为正整数。对于层映射输出比特中的每一层输出比特，根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理 输出序列，发送预处理输出序列。通过该设计，可以引入更多的低相关的预处理输出序列，从而可以引入更多的低相关的预处理码本。当为不同的UE独立配置预处理码本时，可以在满足UE间低干扰的同时增加UE复用数，从而可以提高系统传输速率。
第一个设计，根据第一方面、第二方面或第三方面，该预处理输出序列为第一预处理码本中的序列，该方法还包括：根据发送波形确定预处理码本集合，第一预处理码本为预处理码本集合中的码本。如果发送波形为离散傅里叶扩展正交频分复用DFT-s-OFDM，预处理码本集合为第一预处理码本集合；如果发送波形为循环前缀正交频分复用CP-OFDM，预处理码本集合为第二预处理码本集合；第一预处理码本集合和第二预处理码本集合不同。示例性地，第一预处理码本集合中包括恒模码本，第二预处理码本集合中包括稀疏码本。通过该设计，可以满足发送波形对待发送的数据的要求，从而提高数据传输效率。
第二个设计，根据第一个设计，该方法还包括：接收控制信息，该控制信息中包括码本索引和波形信息中至少一个。其中，码本索引用于从预处理码本集合中确定第一预处理码本，波形信息用于确定发送波形。通过该设计，可以灵活配置发送波形和/或第一预处理码本。进一步地，对于一个空间层，该控制信息中可以包括该空间层的码本索引和波形信息中至少一个。
第三个设计，根据第一个设计或者第二个设计，第一预处理码本中包括R个序列，该R个序列和第二预处理码本中的序列的关系是线性关系，其中，R为大于等于1的整数。该R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，序列S i是第二预处理码本中的序列。通过该设计，可以增加预处理码本的个数，因此可以增加NOMA系统中的UE复用数，从而可以增加系统数据速率。进一步地，生成的第一预处理码本还可以保持第二预处理码本的特性。
第四方面，本申请提供了一种装置，包括预处理模块和收发模块，其中，预处理模块用于根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系确定预处理输出序列，收发模块用于发送该预处理输出序列。
第五方面，本申请提供了一种装置，包括：预处理模块，用于根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，其中，预处理输出序列中包括至少2个符号；层映射模块，用于将预处理输出序列映射至v层，得到层映射输出符号，其中，v为正整数；收发模块，用于发送所述层映射输出符号。
第六方面，本申请提供了一种装置，包括：层映射模块，用于将输入比特映射至v层，得到层映射输出比特，其中，v为正整数；预处理模块，用于对层映射输出比特中的每一层输出比特，根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列；收发模块，用于发送预处理输出序列。
第一个设计，根据第四方面、第五方面或第六方面，预处理输出序列为第一预处理码本中的序列，预处理模块还用于根据发送波形确定预处理码本集合，第一预处理码本为预处理码本集合中的码本。如果发送波形为离散傅里叶扩展正交频分复用DFT-s-OFDM，预处理码本集合为第一预处理码本集合；如果发送波形为循环前缀正 交频分复用CP-OFDM，预处理码本集合为第二预处理码本集合；第一预处理码本集合和第二预处理码本集合不同。示例性地，第一预处理码本集合中包括恒模码本，第二预处理码本集合中包括稀疏码本。
第二个设计，根据第一个设计，收发模块还用于接收控制信息，该控制信息中包括码本索引和波形信息中至少一个。如果该控制信息中包括码本索引，预处理模块还用于根据码本索引用于从预处理码本集合中确定第一预处理码本。如果该控制信息中包括波形信息，预处理模块还用于根据波形信息确定发送波形。进一步地，对于一个空间层，该控制信息中可以包括该空间层的码本索引和波形信息中至少一个。
第三个设计，根据第一个设计或者第二个设计，第一预处理码本中包括R个序列，该R个序列和第二预处理码本中的序列的关系是线性关系，其中，R为大于等于1的整数。该R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，序列S i是第二预处理码本中的序列。
第七方面，本申请提供了一种装置，该装置能够实现第一方面和第一方面各设计中的至少一个的功能。该功能可以通过硬件、软件或硬件加软件的形式实现。该硬件或软件包括一个或多个与上述功能相对应的模块。在一个示例中，该装置包括：处理器、存储器和收发器。其中，存储器和处理器耦合，收发器和处理器耦合，处理器执行所述存储器存储的程序指令。处理器根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列，利用收发器发送所述预处理输出序列。
第八方面，本申请提供了一种装置，该装置能够实现第二方面和第二方面各设计中的至少一个的功能。该功能可以通过硬件、软件或硬件加软件的形式实现。该硬件或软件包括一个或多个与上述功能相对应的模块。在一个示例中，该装置包括：处理器、存储器和收发器。其中，存储器和处理器耦合，收发器和处理器耦合，处理器执行所述存储器存储的程序指令。处理器根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，将预处理输出序列映射至v层，得到层映射输出符号，利用收发器发送层映射输出符号。其中，v为正整数，预处理输出序列中包括至少2个符号。
第九方面，本申请提供了一种装置，该装置能够实现第三方面和第三方面各设计中的至少一个的功能。该功能可以通过硬件、软件或硬件加软件的形式实现。该硬件或软件包括一个或多个与上述功能相对应的模块。在一个示例中，该装置包括：处理器、存储器和收发器。其中，存储器和处理器耦合，收发器和处理器耦合，处理器执行所述存储器存储的程序指令。处理器将输入比特映射至v层，得到层映射输出比特，其中，v为正整数。对于层映射输出比特中的每一层输出比特，处理器根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，利用收发器发送预处理输出序列。
第一个设计，根据第七方面、第八方面或第九方面，该预处理输出序列为第一预处理码本中的序列，处理器还用于根据发送波形确定预处理码本集合，第一预处理码本为预处理码本集合中的码本。如果发送波形为离散傅里叶扩展正交频分复用 DFT-s-OFDM，预处理码本集合为第一预处理码本集合；如果发送波形为循环前缀正交频分复用CP-OFDM，预处理码本集合为第二预处理码本集合；第一预处理码本集合和第二预处理码本集合不同。示例性地，第一预处理码本集合中包括恒模码本，第二预处理码本集合中包括稀疏码本。
第二个设计，根据第一个设计，处理器还利用收发器接收控制信息，该控制信息中包括码本索引和波形信息中至少一个。其中，码本索引用于从所述预处理码本集合中确定所述第一预处理码本。波形信息用于确定所述发送波形。进一步地，对于一个空间层，该控制信息中可以包括该空间层的码本索引和波形信息中至少一个。
第三个设计，根据第一个设计或第二个设计，第一预处理码本中包括R个序列，该R个序列和第二预处理码本中的序列的关系是线性关系，其中，R为大于等于1的整数。该R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，序列S i是所述第二预处理码本中的序列。
第十方面，本申请提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现第一方面和第一方面各设计中至少一个。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十一方面，本申请提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现第二方面和第二方面各设计中至少一个。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十二方面，本申请提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现第三方面和第三方面各设计中至少一个。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十三方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第一方面和第一方面各设计中至少一个。
第十四方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第二方面和第二方面各设计中至少一个。
第十五方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第三方面和第三方面各设计中至少一个。
第十六方面，本申请提供了一种数据传输方法，包括：基于第一预处理码本和/或第二预处理码本对输入数据进行预处理，得到预处理输出序列，发送预处理输出序列。其中，第一预处理码本中包括R个序列，该R个序列和第二预处理码本中的序列的关系是线性关系，R为大于等于1的整数。
第一个设计，根据第十六方面，该R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，序列S i是第二预处理码本中的序列。通过该设计，可以增加码本的个数，生成的第一预处理码本还可以保持第二预处理码本的特性。
第十七方面，本申请提供了一种装置，该装置能够实现第一方面和第一方面各设计中的至少一个的功能。该功能可以通过硬件、软件或硬件加软件的形式实现。该硬件或软件包括一个或多个与上述功能相对应的模块。在一个示例中，该装置包括：处理器、存储器和收发器。其中，存储器和处理器耦合，收发器和处理器耦合，处理器 执行所述存储器存储的程序指令。处理器基于第一预处理码本和/或第二预处理码本对输入数据进行预处理，得到预处理输出序列，处理器利用收发器发送预处理输出序列。其中，第一预处理码本中包括R个序列，该R个序列和第二预处理码本中的序列的关系是线性关系，R为大于等于1的整数。
第一个设计，根据第十七方面，该R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，序列S i是第二预处理码本中的序列。通过该设计，可以增加码本的个数，生成的第一预处理码本还可以保持第二预处理码本的特性。
第十八方面，本申请提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现第十六方面和第十六方面各设计中至少一个。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十九方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第十六方面和第十六方面各设计中至少一个。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对本申请实施例中所涉及的附图进行说明。
图1为本申请实施例提供的一种处理流程示例图；
图2为本申请实施例提供的第一种数据传输方法的示例图；
图3为本申请实施例提供的应用第一种数据传输方法的一种处理流程示例图；
图4为本申请实施例提供的应用第一种数据传输方法的又一种处理流程示例图；
图5为本申请实施例提供的第二种数据传输方法的示例图；
图6为本申请实施例提供的应用第二种数据传输方法的一种处理流程示例图；
图7为本申请实施例提供的应用第二种数据传输方法的又一种处理流程示例图；
图8为本申请实施例提供的第三种数据传输方法的示例图；
图9为本申请实施例提供的应用第三种数据传输方法的一种处理流程示例图；
图10为本申请实施例提供的应用第三种数据传输方法的又一种处理流程示例图；
图11为本申请实施例提供的一种装置结构示例图；
图12为本申请实施例提供的又一种装置结构示例图；
图13为本申请实施例提供的又一种装置结构示例图；
图14为本申请实施例提供的又一种装置结构示例图。
具体实施方式
本申请实施例提供的技术方案可能应用于各种通信系统，例如：第五代移动通信技术(the fifth generation mobile communication technology，5G)系统和长期演进(long term evolution，LTE)系统。其中，5G还可以称为新无线电(new radio，NR)。
在无线通信系统中，包括通信设备，通信设备间可以利用空口资源进行无线通信。其中，通信设备包括网络设备和终端设备，网络设备还可以称为网络侧设备。空口资源可以包括时域资源、频域资源和码资源中至少一个。本申请实施例提供的技术方案主要应用于通信设备间的无线通信。通信设备间的无线通信可以包括：网络设备和终 端设备间的无线通信、网络设备和网络设备间的无线通信以及终端设备和终端设备间的无线通信。在本申请实施例中，术语“无线通信”还可以简称为“通信”，术语“通信”还可以描述为“数据传输”或“传输”。
本申请实施例涉及到的终端设备还可以称为终端，是一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。终端设备可以是用户设备(user equipment，UE)，其中，UE包括具有无线通信功能的手持式设备、车载设备、可穿戴设备或计算设备。示例性地，UE可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。终端设备还可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请实施例中，实现终端的功能的装置可以是终端，也可以是终端中支持终端实现该功能的装置。本申请实施例中，以实现终端的功能的装置是终端，以终端是UE为例，描述本申请实施例提供的技术方案。
本申请实施例涉及到的网络设备包括基站(base station，BS)，是一种部署在无线接入网中可以和终端进行无线通信的设备。其中，基站可能有多种形式，比如宏基站、微基站、中继站和接入点等。示例性地，本申请实施例涉及到的基站可以是5G系统中的基站或LTE系统中的基站，其中，5G系统中的基站还可以称为发送接收点(transmission reception point，TRP)或gNB。本申请实施例中，实现网络设备的功能的装置可以是网络设备，也可以是网络设备中支持网络设备实现该功能的装置。本申请实施例中，以实现网络设备的功能的装置是网络设备，以网络设备是基站为例，描述本申请实施例提供的技术方案。
在无线通信系统中，通信设备间进行无线通信时，发送数据的通信设备还可以称为发送端，接收数据的通信设备还可以称为接收端。以基站和UE间进行无线通信为例，基站向UE发送数据，UE接收基站发送的数据时，基站还可以称为发送端，UE还可以称为接收端；UE向基站发送数据，基站接收UE发送的数据时，UE还可以称为发送端，基站还可以称为接收端。
在NOMA系统中，发送端可以基于各种可能的处理流程，对输入数据进行处理并发送。示例性地，发送端可以基于图1所示的处理流程，对输入数据进行处理并发送。如图1所示，该处理流程包括比特级处理和符号级处理。其中，比特级处理还可以称为比特级操作，符号级处理还可以称为符号级操作。
比特级处理包括前向纠错(forward error correction，FEC)和交织/加扰。
FEC处理用于对输入比特进行信道编码，使得接收端可以检测到误码或可以纠正误码，从而可以增强数据传输的可靠性。进行FEC时，可以采用本技术领域常用的前向纠错码对输入比特进行编码。其中，常用的前向纠错码可以是卷积码或分组码。进行FEC时，对输入比特进行编码，得到编码比特。其中，编码比特是经过前向纠错编码的比特，其还可以称为别的名称，本申请不做限制。
进行交织/加扰时，使用扰码对比特进行加扰，用于降低数据间的干扰。进行交织/ 加扰时，还可以采用本技术领域常用的交织方法对比特进行交织，使得相邻比特分散化，避免在传输过程中产生集中的误码。其中，常用的交织方法可以是行列交织，也可以是根据交织图样(pattern)进行交织。进行交织/加扰时，如果对比特进行加扰和交织，可以对比特先进行加扰再进行交织，也可以对比特先进行交织再进行加扰，本申请不做限制。进行加扰时可以使用不同扰码对不同UE的比特进行加扰，进行交织时可以使用不同交织图样对不同UE的比特进行交织，用于降低不同UE的数据间的相关性，从而可以降低UE间的干扰。对编码比特进行交织和/或加扰，得到加扰比特。
符号级处理包括预处理输出符号序列生成和符号到资源元素(resource element，RE)映射。在基于正交频分复用(orthogonal frequency division multiplexing，OFDM)的通信系统中，示例性地，该通信系统为5G系统或者LTE系统，一个资源元素时域上对应一个符号且频域上对应一个子载波。
进行预处理输出符号序列生成时，可以对加扰比特进行预处理，得到预处理输出符号序列。预处理输出符号序列中包括正整数个符号，该符号可以为复数符号。其中，预处理输出符号序列还可以称为预处理输出序列，预处理输出符号序列中包括的符号还可以称为预处理输出符号。进行符号到资源元素映射时，可以将预处理输出符号序列中的符号映射至资源元素，使得发送端可以在资源元素发送该符号。其中，符号到资源元素映射还可以称为资源元素映射或者其它名称，本申请不做限制。
以基站和UE间进行通信为例，如果发送端为UE，不同UE的符号到资源元素映射处理可以将各自的预处理输出符号映射至相同的资源元素进行发送，不同UE的预处理输出符号是非正交的，基站可以在该资源元素接收到多个非正交的预处理输出符号的叠加；如果发送端为基站，基站可以将不同UE的预处理输出符号映射至相同的资源元素进行发送，不同UE的预处理输出符号是非正交的。在本申请实施例中，待发送数据可以是能够在空口被发送的数据；也可以是被处理后能够在空口被发送的数据，本申请不做限制。
获得UE的调制符号序列的处理可以称为预处理。其中，预处理还可以称为其它名称，本申请不做限制。不同UE的调制符号映射至相同的资源元素进行发送还可以称为UE的复用，相同的资源元素中可以复用的UE的个数可以称为UE复用数。
随着无线通信技术的发展，通信系统中的连接数持续增加，为了支持更多的连接数，一种的可能的方法是增加UE复用数。相对正交多址，NOMA可以提供相对较多的UE复用数。在NOMA系统中，为了进一步增加UE复用数，本申请实施例提供了以下几种方法和相应的装置。
图2所示为本申请实施例提供的第一种数据传输方法，如图2所示，发送端根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列，发送该预处理输出序列。其中，发送该预处理输出序列还可以描述为发送该确定的预处理输出序列。根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系确定预处理输出序列还可以描述为预处理，本申请实施例提供的第一种数据传输方法还可以描述为：发送端根据预处理输入符号与预处理输出序列间的映射关系对预处理输入符号进行预处理，得到预处理输出序列，发送该得到的预处理输出序列。
预处理输入符号可以为x个符号，该x个符号的组合取值可以为M个取值中的任一个。在本申请实施例中，该x个符号的组合取值还可以简称为该x个符号的取值。预处理输入符号与预处理输出序列间的映射关系可以描述为该M个取值和M个预处理输出序列间的映射关系。其中，x和M为大于等于1的整数，预处理输入符号可以为复数符号，一个预处理输出序列中包括正整数个符号。该M个预处理输出序列包括于第一预处理码本中，还可以描述为第一预处理码本中包括该M个预处理输出序列。在本申请实施例中，预处理码本还可以称为其它名称，第一预处理码本还可以称为预处理码本A或者其它名称，本申请不作限制。第一预处理码本包括于预处理码本集合中，还可以描述为预处理码本集合中包括第一预处理码本。本申请实施例中，预处理码本集合中包括可用的预处理码本，可用的预处理码本中包括可用的预处理序列。
在NOMA系统中，在传统的预处理方法中，配置预处理矩阵，将预处理输入符号和预处理矩阵相乘，得到预处理输出序列，预处理输入符号和预处理输出序列间为线性关系。为了降低进行复用的UE间的干扰，即降低不同UE的预处理输出序列间的相关性，可以为不同的UE独立配置预处理矩阵，由于预处理矩阵的个数有限，从而导致可以复用的UE的个数有限。通过本申请实施例提供的第一种数据传输方法，配置预处理输入符号与预处理输出序列间的映射关系，该映射关系无需限制为线性关系，可以引入更多的低相关的预处理输出序列，从而可以引入更多的低相关的预处理码本。当为不同的UE独立配置预处理码本时，可以在满足UE间低干扰的同时增加UE复用数，从而可以提高系统传输速率。
在本申请实施例提供的第一种数据传输方法中，当预处理输入符号为调制符号时，可以根据调制方式设置预处理输入符号与预处理输出序列间的映射关系。
示例性地，以x等于1，预处理输入符号为经过正交相移键控(quadrature phase shift keying，QPSK)调制的调制符号为例，预处理输入符号与预处理输出序列间的映射关系可以通过表1描述。如表1所示，每1个预处理输入符号的组合取值可以有4种可能的取值，该4种可能的取值分别为q1、q2、q3和q4，其中，
Figure PCTCN2018109583-appb-000001
Figure PCTCN2018109583-appb-000002
该4种可能的取值对应的预处理输出序列如表1中所示。对于预处理输入符号中的1个符号，当该符号的值为q1时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000003
其中，
Figure PCTCN2018109583-appb-000004
当该符号的值为q2时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000005
其中，
Figure PCTCN2018109583-appb-000006
当该符号的值为q3时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000007
其中，
Figure PCTCN2018109583-appb-000008
当该符号的值为q4时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000009
其中，
Figure PCTCN2018109583-appb-000010
其中，k为正整数，
Figure PCTCN2018109583-appb-000011
Figure PCTCN2018109583-appb-000012
和
Figure PCTCN2018109583-appb-000013
为复数，i＝0,1,…,k-1。
表1
Figure PCTCN2018109583-appb-000014
示例性地，以x等于2，预处理输入符号为经过二相移键控(binary phase shift keying，BPSK)调制的调制符号为例，预处理输入符号与预处理输出序列间的映射关系可以通过表2描述。如表2所示，每2个预处理输入符号的组合取值可以有4种可能的取值，该4种可能的取值分别为[q1,q1]、[q1,q2]、[q2,q1]和[q2,q2]，示例性地，q1＝1，q2＝-1。该4种可能的取值对应的预处理输出序列如表2中所示。对于预处理输入符号中的2个符号，当该2个符号中的第1个符号取值为q1且第2个符号取值为q1时，对应的预处理输出序列为
Figure PCTCN2018109583-appb-000015
其中，
Figure PCTCN2018109583-appb-000016
当该2个符号中的第1个符号取值为q1且第2个符号取值为q2时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000017
其中，
Figure PCTCN2018109583-appb-000018
当该2个符号中的第1个符号取值为q2且第2个符号取值为q1时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000019
其中，
Figure PCTCN2018109583-appb-000020
当该2个符号中的第1个符号取值为q2且第2个符号取值为q2时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000021
其中，
Figure PCTCN2018109583-appb-000022
其中，k为正整数，
Figure PCTCN2018109583-appb-000023
和
Figure PCTCN2018109583-appb-000024
为复数，i＝0,1,…,k-1。
表2
Figure PCTCN2018109583-appb-000025
在该方法中，可以由接收端为发送端发送信令，该信令携带调制方式指示信息，用于指示接收端为发送端配置的调制方式；发送端接收接收端发送的信令，通过该信令确定调制方式。其中，该信令可以携带调制方式标识。需要说明的是，此时，该方法中的发送端为进行该信令传输时的接收端，该方法中的接收端为进行该信令传输时的发送端。表3所示为调制方式标识和对应的调制方式的映射关系的一个示例。在该方法中，示例性地，接收端为基站，发送端为UE；接收端为第一UE，发送端为第二 UE；或接收端为第一基站，发送端为第二基站。
在本申请实施例中，信令可以是高层信令或者物理层信令。高层信令可以为无线资源控制(radio resource control，RRC)信令、广播消息、系统消息或媒体接入控制(medium access control，MAC)控制元素(control element，CE)。物理层信令可以为物理控制信道携带的信令或者物理数据信道携带的信令，其中，物理控制信道携带的信令可以为物理下行控制信道携带的信令、增强物理下行控制信道(enhanced physical downlink control channel,EPDCCH)携带的信令、窄带物理下行控制信道(narrowband physical downlink control channel,NPDCCH)携带的信令或机器类通信物理下行控制信道(machine type communication(MTC)physical downlink control channel，MPDCCH)携带的信令。物理下行控制信道携带的信令还可以称为下行控制信息(downlink control information，DCI)。物理控制信道携带的信令还可以为物理副链路控制信道(physical sidelink control channel)携带的信令，物理副链路控制信道携带的信令还可以称为副链路控制信息(sidelink control information，SCI)。
表3
Figure PCTCN2018109583-appb-000026
在该方法中，发送端可以确定调制方式，使用该调制方式对待发送数据进行调制，并向接收端发送信令，通过该信令指示其使用的调制方式。其中，该信令中可以包括调制方式标识。在该方法中，示例性地，接收端为基站，发送端为UE；接收端为第一UE，发送端为第二UE；或接收端为第一基站，发送端为第二基站。
在本申请实施例提供的第一种数据传输方法中，发送端可以使用波形发送预处理输出序列。在本申请实施例中，发送端发送预处理输出序列还可以描述为发送端发送预处理输出序列中的符号。其中，发送端使用的波形还可以称为发送波形、传输波形、波形或者其它名称，本申请不做限制。示例性地，发送波形可以为离散傅里叶扩展正交频分复用(discrete fourier transform spreading OFDM，DFT-s-OFDM)波形或循环前缀正交频分复用(cyclic prefix orthogonal frequency division multiplexing，CP-OFDM)波形。在本申请实施例中，DFT-s-OFDM波形还可以简称为DFT-s-OFDM，CP-OFDM波形还可以简称为CP-OFDM。
如果发送端使用DFT-s-OFDM对待发送数据进行发送，发送端发送预处理输出序列还可以包括对预处理输出序列进行离散傅立叶(discrete fourier transform，DFT)变换。具体地，发送端根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列，对预处理输出序列进行DFT变换，得到频域符号，发送该频域符号。其中，发送端对预处理输出序列进行DFT变换还可以描述为：发送端对预处理输出序列中的符号进行DFT变换。如果发送端使用DFT-s-OFDM对待发送数据进行发送，可以使用图3所示的处理流程对输入数据进行处理。图3所示的处理流程中可以包括交织/加扰、调制、层映射、预处理和DFT，还可以包括域编码和资源元素映射。
如图3所示，输入数据可以为Q个码字。该Q个码字中的一个码字可以是对一组输入比特进行前向纠错编码后得到的数据块。其中，该数据块还可以称为编码块，本申请不做限制。Q为大于等于1的整数，示例性地，Q等于2。发送端将该Q个码字中的每一个码字分别进行加扰，得到各码字对应的加扰比特。或者，发送端将该Q个码字中的每一个码字分别进行交织和加扰，得到各码字对应的加扰比特。其中，发送端对码字进行交织和加扰时，可以先对该码字进行加扰再进行交织，也可以先对该码字进行交织再进行加扰，本申请不做限制。
对加扰比特进行调制，获得调制符号。示例性地，可以对各码字对应的加扰比特分别进行调制，获得各码字对应的调制符号。具体地，基于相应的调制方式，对各码字对应的加扰比特进行调制，获得各码字对应的调制符号。其中，不同码字的调制方式可以相同，也可以不同，本申请不做限制。调制方式还可以描述为输入比特和输出符号间的映射关系。示例性地，调制方式可以为BPSK、QPSK、16QAM和64QAM等本技术领域常用的调制方式。
对调制符号进行层映射，将调制符号映射至v层，得到层映射符号。具体地，将Q个码字对应的调制符号映射至v层，得到v层层映射符号。其中，v为大于等于1的整数。通过层映射，可以使发送端和接收端在至少一个空间层进行数据传输，从而可以通过多个空间层传输数据，增加数据传输速率。
对层映射符号进行预处理，得到预处理输出序列。具体地，对层映射符号中的每一层符号进行预处理，得到该层符号对应的预处理输出序列。该预处理可以为本申请实施例提供的第一种数据传输方法中的预处理。即对层映射符号中的每一层符号，以该层符号作为预处理输入符号，根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列。通过预处理，可以获得v层预处理输出序列。
发送预处理输出序列。具体地，发送预处理输出序列中的符号。
发送预处理输出序列还包括对预处理输出序列进行DFT变换，获得频域符号，发送该频域符号。对v层预处理输出序列进行DFT变换，可以获得v层频率符号。
进一步地，发送预处理输出序列还可以包括对频域符号进行预编码，获得映射符号，发送该映射符号。示例性地，将v层频率符号进行线性变换，得到各天线端口对应的映射符号，在各天线端口发送该天线端口对应的映射符号。其中，映射符号是可以在天线端口进行发送的数据，或者是经过处理后可以在天线端口进行发送的数据，其还可以称为别的名称，本申请不做限制。再示例性地，配置预编码矩阵，将v层频率符号和编码矩阵相乘，得到各天线端口对应的映射符号。
再进一步地，发送预处理输出序列还可以包括将映射符号映射至资源元素，在资源元素发送相应的映射符号。具体地，对于一个天线端口，将该天线端口对应的映射符号映射至对应的资源元素，在该天线端口的资源元素发送相应的映射符号。示例性地，将映射符号中的一个符号映射至一个资源元素，在该资源元素发送该符号。
如果发送端使用CP-OFDM对待发送数据进行发送，可以使用图4所示的处理流程对输入数据进行处理。图4所示的处理流程中可以包括交织/加扰、调制、层映射和预处理，还可以包括预编码和资源元素映射。其中，交织/加扰、调制、层映射、预处理和资源元素映射的方法类似图3涉及的处理流程中相应的介绍，这里不再赘述。基于图4所示的处理流程，在本申请实施例提供的第一种数据传输方法中，发送预处理输出序列还可以包括对预处理输出序列进行预编码，获得映射符号，发送该映射符号。示例性地，将v层预处理输出序列中的符号进行线性变换，得到各天线端口对应的映射符号，在各天线端口发送其对应的映射符号。其中，映射符号是可以在天线端口进行发送的数据，或者是经过处理后可以在天线端口进行发送的数据，其还可以称为别的名称，本申请不做限制。再示例性地，配置预编码矩阵，通过将v层预处理输出序列中的符号和预编码矩阵相乘，得到各天线端口对应的映射符号。
在本申请实施例中，发送波形为DFT-s-OFDM还可以描述为在发送处理流程中进行DFT或者使能DFT，如图3所示的处理流程；发送波形为CP-OFDM还可以描述为在发送处理流程中不进行DFT或者不使能DFT，如图4所示的处理流程。其中，DFT用于将数据从时域变换到频域，其还可以称为变换预编码(transform precoding)或者其它名称，本申请不做限制。
图5所示为本申请实施例提供的第二种数据传输方法，如图5所示，发送端根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，将预处理输出序列映射至v层，得到层映射输出符号，发送层映射输出符号。其中，v为正整数。
预处理输入比特可以为x个比特，该x个比特的组合取值可以为M个取值中的任一个。预处理输入比特与预处理输出序列间的映射关系可以描述为该M个取值和M个预处理输出序列间的映射关系。其中，x和M为正整数，一个预处理输出序列中包括正整数个符号，示例性地，一个预处理输出序列中包括至少2个符号。示例性地，不 同的预处理输出序列中的符号个数可以相同，不同的预处理输出序列中的符号个数也可以不同。该M个预处理输出序列包括于第一预处理码本中，还可以描述为第一预处理码本中包括该M个预处理输出序列。第一预处理码本包括于预处理码本集合中，还可以描述为预处理码本集合中包括第一预处理码本。
示例性地，以x等于1为例，预处理输入比特与预处理输出序列间的映射关系可以通过表4描述。如表4所示，每1个预处理输入比特的组合取值可以为2个取值中的任一个，该2个取值分别为b1和b2，示例性地，b1＝1，b2＝-1。该2个取值对应的预处理输出序列如表3中所示。对于预处理输入符号中的1个比特，当该比特的值为b1时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000027
其中，
Figure PCTCN2018109583-appb-000028
当该符号的值为b2时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000029
其中，
Figure PCTCN2018109583-appb-000030
其中，其中，k为正整数，
Figure PCTCN2018109583-appb-000031
和
Figure PCTCN2018109583-appb-000032
为复数，i＝0,1,…,k-1。
在本申请实施例中，不同的方法或者不同的技术方案中的预处理输出序列、预处理码本和预处理码本集合可以独立设置，即不同的数据传输方法中的预处理输出序列、预处理码本和预处理码本集合可以相同也可以不同，本申请不做限制。进一步地，在本申请实施例中，不同的方法或者不同的技术方案中，相同的技术特征的值可以相同也可以不同，本申请不做限制。
表4
Figure PCTCN2018109583-appb-000033
示例性地，以x等于2为例，预处理输入比特与预处理输出序列间的映射关系可以通过表5描述。如表5所示，每2个预处理输入比特的组合取值可以为4个取值中的任何一个，该4个取值分别为[b1,b1]、[b1,b2]、[b2,b2]和[b2,b1]。示例性地，b1＝1，b2＝-1。该4个取值对应的预处理输出序列如表4中所示。对于预处理输入符号中的2个比特，当第一个比特的取值为b1且第二个比特的取值为b1时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000034
其中，
Figure PCTCN2018109583-appb-000035
当第一个比特的取值为b1且第二个比特的取值为b2时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000036
其中，
Figure PCTCN2018109583-appb-000037
当第一个比特的取值为b2且第二个比特的取值为b2时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000038
其中，
Figure PCTCN2018109583-appb-000039
当第一个比特的取值为b2且第二个比特的取值为b1时，确定其对应的预处理输出序列为
Figure PCTCN2018109583-appb-000040
其中，
Figure PCTCN2018109583-appb-000041
其中，k为正整数，
Figure PCTCN2018109583-appb-000042
和
Figure PCTCN2018109583-appb-000043
为复数，i＝0,1,…,k-1。
表5
Figure PCTCN2018109583-appb-000044
在本申请实施例中，发送端将预处理输出序列映射至v层时，以一个预处理输出序列中包括的符号为一个映射单元，将预处理输出序列中的预处理输出符号映射至v层。其中，以一个预处理输出序列中包括的符号为一个映射单元还可以描述为以预处理输出序列为映射单元。
通过本申请实施例提供的第二种数据传输方法，配置预处理输入比特与预处理输出序列间的映射关系，该映射关系无需限制为线性关系，可以引入更多的低相关的预处理输出序列，从而可以引入更多的低相关的预处理码本。当为不同的UE独立配置预处理码本时，可以在满足UE间低干扰的同时增加UE复用数，从而可以提高系统传输速率。
在本申请实施例提供的第二种数据传输方法中，发送端可以使用波形发送预处理输出序列。
如果发送端使用DFT-s-OFDM对待发送数据进行发送，发送端发送层映射符号还可以包括对层映射符号进行DFT变换，获得频域符号，发送该频域符号。如果发送端使用DFT-s-OFDM对待发送数据进行发送，可以使用图6所示的处理流程对输入数据进行处理。图6所示的处理流程中可以包括交织/加扰、预处理、层映射和DFT，还可以包括预编码和资源元素映射。如图6所示，输入数据可以为Q个码字，该Q个码字中的一个码字可以是对一组输入比特进行前向纠错编码后得到的数据块。交织/加扰、空间域预编码和资源元素映射方法类似图3涉及的处理流程中相应的介绍，这里不再赘述。
对加扰比特进行预处理，得到预处理输出序列。该预处理方法为本申请实施例提供的第二种数据传输方法中的预处理方法。示例性地，对各码字对应的加扰比特，以该加扰比特作为预处理输入比特，根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定该码字对应预处理输出序列。
将预处理输出序列映射至v层，得到层映射符号。该层映射方法为本申请实施例提供的第二种数据传输方法中的层映射方法。具体地，对于各码字对应的预处理输出序列，以一个预处理输出序列中包括的符号为一个映射单元，将预处理输出序列中的预处理输出符号进行层映射。其中，以一个预处理输出序列中包括的符号为一个映射 单元还可以描述为以预处理输出序列为映射单元。第二种数据传输方法中的层映射方法还可以描述为以预处理输出序列为粒度进行层映射。
示例性地，以码字个数是1，该码字对应的一组加扰比特为一组预处理输入比特B (0)为例，其中
Figure PCTCN2018109583-appb-000045
为该组预处理输入比特中的预处理输入比特的个数。对于该组预处理输入比特中的预处理输入比特，发送端根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，获得一组预处理输出序列E (0)，其中
Figure PCTCN2018109583-appb-000046
为该组预处理输出序列中的预处理输出序列的个数。根据该组预处理输出序列的各预处理输出序列中包括的符号，得到该组预处理输出序列对应的一组预处理输出符号S (0)。示例性地，将该组预处理输出序列的各预处理输出序列中包括的符号组合起来，得到该组预处理输出序列对应的一组预处理输出符号S (0)。其中，
Figure PCTCN2018109583-appb-000047
为S (0)中的预处理输出符号的个数。示例性地，s (0)(i)为E (0)中的一个预处理输出序列中的符号，i为0至
Figure PCTCN2018109583-appb-000048
中任一个整数。示例性地，如果E (0)中每个预处理输出序列中包括k (0)个符号，则
Figure PCTCN2018109583-appb-000049
表6所示为将S (0)映射至v层得到层映射输出符号的示例。如表6所示，发送端以k (0)个符号为一个映射单元，将S (0)中的预处理输出符号映射至v层。具体地：
当v等于1时，以k (0)个符号为一个映射单元，将S (0)中的预处理输出符号映射至1层，得到1层层映射符号，该层层映射符号中包括
Figure PCTCN2018109583-appb-000050
个映射单元，该层层映射符号中的第ik (0)+j个符号的值c (0)(ik (0)+j)等于S (0)中的第ik (0)+j个值s (0)(ik (0)+j)，其中，i和j为整数，
Figure PCTCN2018109583-appb-000051
j＝0,1,…,k (0)-1，
Figure PCTCN2018109583-appb-000052
当v等于2时，以k (0)个符号为一个映射单元，将S (0)中的预处理输出符号映射至2层，得到2层层映射符号，每层层映射符号中包括
Figure PCTCN2018109583-appb-000053
个映射单元，第1层层映射符号中的第ik (0)+j个符号的值c (0)(ik (0)+j)等于S (0)中的第2ik (0)+j个值s (0)(2ik (0)+j)，第2层层映射符号中的第ik (0)+j个符号的值c (1)(ik (0)+j)等于S (0)中的第2ik (0)+k (0)+j个值s (0)(2ik (0)+k (0)+j)，其中，i和j为整数，
Figure PCTCN2018109583-appb-000054
j＝0,1,…,k (0)-1，
Figure PCTCN2018109583-appb-000055
当v等于3时，以k (0)个符号为一个映射单元，将S (0)中的预处理输出符号映射至3层，得到3层层映射符号，每层层映射符号中包括
Figure PCTCN2018109583-appb-000056
个映射单元，第1层层映射符号中的第ik (0)+j个符号的值c (0)(ik (0)+j)等于S (0)中的第3ik (0)+j个值s (0)(3ik (0)+j)，第2层层映射符号中的第ik (0)+j个符号的值c (1)(ik (0)+j)等于S (0)中的第3ik (0)+k (0)+j个值s (0)(3ik (0)+k (0)+j)，第3层层映射符号中的第ik (0)+j个符号的值c (2)(ik (0)+j)等于S (0)中的第3ik (0)+2k (0)+j个值s (0)(3ik (0)+2k (0)+j)，其中，i和j为整数，
Figure PCTCN2018109583-appb-000057
j＝0,1,…,k (0)-1，
Figure PCTCN2018109583-appb-000058
当v等于4时，以k (0)个符号为一个映射单元，将S (0)中的预处理输出符号映射至4层，得到4层层映射符号，每层层映射符号中包括
Figure PCTCN2018109583-appb-000059
个映射单元，第1层层映射 符号中的第ik (0)+j个符号的值c (0)(ik (0)+j)等于S (0)中的第4ik (0)+j个值s (0)(4ik (0)+j)，第2层层映射符号中的第ik (0)+j个符号的值c (1)(ik (0)+j)等于S (0)中的第4ik (0)+k (0)+j个值s (0)(4ik (0)+k (0)+j)，第3层层映射符号中的第ik (0)+j个符号的值c (2)(ik (0)+j)等于S (0)中的第4ik (0)+2k (0)+j个值s (0)(4ik (0)+2k (0)+j)，第4层层映射符号中的第ik (0)+j个符号的值c (3)(ik (0)+j)等于S (0)中的第4ik (0)+3k (0)+j个值s (0)(4ik (0)+3k (0)+j)，其中，i和j为整数，
Figure PCTCN2018109583-appb-000060
j＝0,1,…,k (0)-1，
Figure PCTCN2018109583-appb-000061
表6
Figure PCTCN2018109583-appb-000062
示例性地，以码字个数是2，该2个码字对应的2组加扰比特分别为预处理输入比特B (0)和B (1)为例，其中
Figure PCTCN2018109583-appb-000063
Figure PCTCN2018109583-appb-000064
为B (0)中的预处理输入比特的个数，
Figure PCTCN2018109583-appb-000065
为B (1)中的预处理输入比特的个数。对于B (0)和B (1)中的预处理输入比特，发送端根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列。
对应于B (0)，发送端获得一组预处理输出序列E (0)，其中
Figure PCTCN2018109583-appb-000066
为该组预处理输出序列中的预处理输出序列的个数。根据该组预处理输出序列的各预处理输出序列中包括的符号，得到该组预处理输出序列对应的一组预处理输出符号S (0)。示例性地，将该组预处理输出序列的各预处理输出序列中包括的符号组合起来，得到该组预处理输出序列对应的一组预处理输出符号S (0)。其中，
Figure PCTCN2018109583-appb-000067
为S (0)中的预处理输出符号的个数。示例性地，s (0)(i)为E (0)中的一个预处理输出序列中的符号，i为0至
Figure PCTCN2018109583-appb-000068
中任一个整数。示例性地，如果E (0)中每个预处理输出序列中包括k (0)个符号，则
Figure PCTCN2018109583-appb-000069
对应于B (1)，发送端获得一组预处理输出序列E (1)，其中
Figure PCTCN2018109583-appb-000070
为该组预处理输出序列中的预处理输出序列的个数。根据该组预处理输出序列的各预处理输出序列中包括的符号，得到该组预处理输出序列对应的一组预处理输出符号S (1)。示例性地，将该组预处理输出序列的各预处理输出序列中包括的符号组合起来，得到该组预处理输出序列对应的一组预处理输出符号S (1)。其中，
Figure PCTCN2018109583-appb-000071
为S (1)中的预处理输出符号的个数。示例性地，s (1)(i)为E (1)中的一个预处理输出序列中的符号，i为0至
Figure PCTCN2018109583-appb-000072
中任一个整数。示例性地，如果E (1)中每个预处理输出序列中包括k (1)个符号，则
Figure PCTCN2018109583-appb-000073
以k (0)＝k (1)＝k为例，表7所示为将S (0)和S (1)映射至v层得到层映射输出符号的示例。如表7所示，发送端以k个符号为一个映射单元，将S (0)和S (1)中的预处理输出符号映射至v层，得到v层层映射符号。该v层层映射符号中的第n层层映射符号为c (n-1)，n的取值为1至v。
当v等于2时，以k个符号为一个映射单元，将S (0)和S (1)中的预处理输出符号映射至2层，得到2层层映射符号，每层层映射符号中包括
Figure PCTCN2018109583-appb-000074
个映射单元。第1层层映射符号中的第ik+j个符号的值c (0)(ik+j)等于S (0)中的第ik+j个值s (0)(ik+j)，第2层层映射符号中的第ik+j个符号的值c (1)(ik+j)等于S (1)中的第ik+j个值s (1)(ik+j)，其中，i和j为整数，
Figure PCTCN2018109583-appb-000075
j＝0,1,…,k-1，
Figure PCTCN2018109583-appb-000076
当v等于3时，以k个符号为一个映射单元，将S (0)和S (1)中的预处理输出符号映射至3层，得到3层层映射符号，每层层映射符号中包括
Figure PCTCN2018109583-appb-000077
个映射单元，第1层层映射符号中的第ik+j个符号的值c (0)(ik+j)等于S (0)中的第ik+j个值s (0)(ik+j)，第2层层映射符号中的第ik+j个符号的值c (1)(ik+j)等于S (1)中的第2ik+j个值s (1)(2ik+j)，第3层层映射符号中的第ik+j个符号的值c (2)(ik+j)等于S (1)中的第2ik+k+j个值s (1)(2ik+k+j)，其中，i和j为整数，
Figure PCTCN2018109583-appb-000078
j＝0,1,…,k (0)-1，
Figure PCTCN2018109583-appb-000079
当v等于4时，以k个符号为一个映射单元，将S (0)和S (1)中的预处理输出符号映射至4层，得到4层层映射符号，每层层映射符号中包括
Figure PCTCN2018109583-appb-000080
个映射单元，第1层层映射符号中的第ik+j个符号的值c (0)(ik+j)等于S (0)中的第ik+j个值s (0)(2ik+j)，第2层层映射符号中的第ik+j个符号的值c (1)(ik+j)等于S (0)中的第2ik+k+j个值s (0)(2ik+k+j)，第3层层映射符号中的第ik+j个符号的值c (2)(ik+j)等于S (1)中的第2ik+j个值s (1)(2ik+j)，第4层层映射符号中的第ik+j个符号的值c (3)(ik+j)等于S (1)中的第2ik+k+j个值s (1)(2ik+k+j)，其中，i和j为整数，
Figure PCTCN2018109583-appb-000081
j＝0,1,…,k (0)-1，
Figure PCTCN2018109583-appb-000082
表7
Figure PCTCN2018109583-appb-000083
Figure PCTCN2018109583-appb-000084
发送层映射符号。
发送层映射符号还包括对层映射符号进行DFT变换，获得频域符号，发送该频域符号。对v层层映射符号进行DFT变换，可以获得v层频率符号。
如果发送端使用CP-OFDM对待发送数据进行发送，可以使用图7所示的处理流程对输入数据进行处理。图7所示的处理流程中可以包括交织/加扰、预处理、层映射，还可以包括预编码和资源元素映射。其中，交织/加扰、预处理、层映射和资源元素映射方法类似图6涉及的处理流程中相应的介绍，这里不再赘述。基于图7所示的处理流程，在本申请实施例提供的第二种数据传输方法中，发送层映射符号还可以包括对层映射符号进行预预编码，获得预编码符号，发送该预编码符号。示例性地，将各层层映射符号进行线性变换，得到各天线端口对应的映射符号，在各天线端口发送其对应的映射符号。其中，映射符号是可以在天线端口进行发送的数据，或者是经过处理后可以在天线端口进行发送的数据，其还可以称为别的名称，本申请不做限制。再示例性地，配置预编码矩阵，通过将v层层映射符号和预编码矩阵相乘，得到各天线端口对应的映射符号。
图8所示为本申请实施例提供的第三种数据传输方法，如图8所示，发送端将输入比特映射至v层，得到层映射输出比特，其中，v为正整数。对于层映射输出比特中的每一层输出比特，发送端根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，发送预处理输出序列。
对于层映射输出比特中的每一层输出比特，发送端以该层输出比特作为预处理输入比特，根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列。其中，发送端根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列的方法同本申请实施例提供的第二种数据传输方法中相应的描述，这里不再赘述。
通过本申请实施例提供的第三种方法，配置预处理输入比特与预处理输出序列间的映射关系，该映射关系无需限制为线性关系，可以引入更多的低相关的预处理输出序列，从而可以引入更多的低相关的预处理码本。当为不同的UE独立配置预处理码本时，可以在满足UE间低干扰的同时增加UE复用数。
在本申请实施例提供的第三种方法中，发送端可以使用波形发送预处理输出序列。
如果发送端使用DFT-s-OFDM对待发送数据进行发送，发送端发送预处理输出序列还可以包括对预处理输出序列进行DFT变换。具体地，发送端根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列，对预处理输出序列进行DFT变换，获得频域符号，发送该频域符号。如果发送端使用DFT-s-OFDM对待发送数据进行发送，可以使用图9所示的处理流程对输入数据进行处理。图9所示的处理流程中可以包括交织/加扰、层映射、预处理和DFT，还可以包括预编码和资源元素映射。其中，交织/加扰、DFT、预编码和资源元素映射方法类似图3涉及的处理流程中相应的介绍，这里不再赘述。
层映射时，对加扰比特进行层映射，得到层映射输出比特。
示例性地，以码字个数是1，该码字对应的一组加扰比特为D (0)为例，其中
Figure PCTCN2018109583-appb-000085
为该组加扰比特中的比特数。表8所示为将D (0)映射至v层得到层映射输出比特的示例。如表8所示：
当v等于1时，将D (0)中的加扰比特映射至1层，得到1层层映射输出比特，该层层映射输出比特中的第i个比特的值x (0)(i)等于D (0)中的第i个值d (0)(i)，其中，
Figure PCTCN2018109583-appb-000086
当v等于2时，将D (0)中的加扰比特映射至2层，得到2层层映射输出比特，第1层层映射输出比特中的第i个比特的值x (0)(i)等于D (0)中的第2i个值d (0)(2i)，第2层层映射输出比特中的第i个比特的值x (1)(i)等于D (0)中的第2i+1个值d (0)(2i+1)，其中，
Figure PCTCN2018109583-appb-000087
当v等于3时，将D (0)中的加扰比特映射至3层，得到3层层映射输出比特，第1层层映射输出比特中的第i个比特的值x (0)(i)等于D (0)中的第3i个值d (0)(3i)，第2层层映射输出比特中的第i个比特的值x (1)(i)等于D (0)中的第3i+1个值d (0)(3i+1)，第3层层映射输出比特中的第i个比特的值x (2)(i)等于D (0)中的第3i+2个值d (0)(3i+2)，其中，
Figure PCTCN2018109583-appb-000088
当v等于4时，将D (0)中的加扰比特映射至4层，得到4层层映射输出比特，第1层层映射输出比特中的第i个比特的值x (0)(i)等于D (0)中的第4i个值d (0)(4i)，第2层层映射输出比特中的第i个比特的值x (1)(i)等于D (0)中的第4i+1个值d (0)(4i+1)，第3层层映射输出比特中的第i个比特的值x (2)(i)等于D (0)中的第4i+2个值d (0)(4i+2)，第4层层映射输出比特中的第i个比特的值x (2)(i)等于D (0)中的第4i+3个值d (0)(4i+3)，其中，
Figure PCTCN2018109583-appb-000089
表8
Figure PCTCN2018109583-appb-000090
示例性地，以码字个数是2，第1个码字对应的第1组加扰比特为D (0)，第2个码字对应的第2组加扰比特为D (1)为例，其中
Figure PCTCN2018109583-appb-000091
Figure PCTCN2018109583-appb-000092
为第1组加扰比特中的比特数，
Figure PCTCN2018109583-appb-000093
为第2组加扰比特中的比特数。表9所示为将加扰比特映射至v层得到层映射输出比特的示例。如表9所示：
当v等于2时，将D (0)中的加扰比特映射至第1层，得到第1层层映射输出比特，第1层层映射输出比特中的第i个比特的值x (0)(i)等于D (0)中的第i个值d (0)(i)，将D (1)中的加扰比特映射至第2层，得到第2层层映射输出比特，第2层映射输出比特中的第i个比特的值x (1)(i)等于D (1)中的第i个值d (1)(i)，其中，
Figure PCTCN2018109583-appb-000094
Figure PCTCN2018109583-appb-000095
当v等于3时，将D (0)中的加扰比特映射至第1层，得到第1层层映射输出比特，第1层层映射输出比特中的第i个比特的值x (0)(i)等于D (0)中的第i个值d (0)(i)，将D (1)中的加扰比特映射至第2层和第3层，得到第2层和第3层层映射输出比特，第2层层映射输出比特中的第i个比特的值x (1)(i)等于D (1)中的第2i个值d (1)(2i)，第3层层映射输出比特中的第i个比特的值x (2)(i)等于D (1)中的第2i+1个值d (1)(2i+1)，其中，
Figure PCTCN2018109583-appb-000096
当v等于4时，将D (0)中的加扰比特映射至第1层和第2层，得到第1层和第2层层映射输出比特，第1层层映射输出比特中的第i个比特的值x (0)(i)等于D (0)中的第2i个值d (0)(2i)，第2层层映射输出比特中的第i个比特的值x (1)(i)等于D (0)中的第2i+1个值d (0)(2i+1)，将D (1)中的加扰比特映射至第3层和第4层，得到第3层和第4层层映射输出比特，第3层层映射输出比特中的第i个比特的值x (2)(i)等于D (1)中的第2i个 值d (1)(2i)，第4层层映射输出比特中的第i个比特的值x (3)(i)等于D (1)中的第2i+1个值d (1)(2i+1)，其中，
Figure PCTCN2018109583-appb-000097
表9
Figure PCTCN2018109583-appb-000098
对层映射输出比特进行预处理。具体地，对每层层映射输出比特分别进行预处理。
如果发送端使用CP-OFDM对待发送数据进行发送，可以使用图10所示的处理流程对输入数据进行处理。图10所示的处理流程中可以包括交织/加扰、层映射和预处理，还可以包括空间域编码和资源元素映射。其中，交织/加扰、层映射和预处理方法类似图9涉及的处理流程中相应的介绍，这里不再赘述。预编码和资源元素映射类似图4涉及的处理流程中相应的介绍，这里不再赘述。
在本申请实施例提供的上述各种方法中，可以通过预配置或者信令配置为发送端配置预处理码本。通过信令配置为发送端配置预处理码本时，可以由接收端为发送端发送信令，该信令携带指示信息，用于指示接收端为发送端配置的预处理码本；发送端接收接收端发送的信令，通过该信令确定该发送端的预处理码本。发送端可以使用该发送端的预处理码本进行预处理。需要说明的是，此时，该方法中的发送端为进行该信令传输时的接收端，该方法中的接收端为进行该信令传输时的发送端。其中，该信令中可以包括预处理码本的标识。
示例性地，预处理码本集合中的一个预处理码本对应一个标识，该标识称为该预处理码本的标识。发送端接收接收端发送的信令，该信令中包括预处理码本的标识，发送端以该标识对应的预处理码本作为该发送端的预处理码本。
应用该方法时，示例性地，接收端为基站，发送端为UE；接收端为第一UE，发送端为第二UE；或接收端为第一基站，发送端为第二基站。
在该方法中，对应于各空间层，可以为发送端独立配置预处理码本。对于多天线系统，发送端和接收端可以分别使用多个发送天线和接收天线，从而可以形成多个空间，该多个空间可以进行空分复用。示例性地，该多个空间可以各对应一份空口资源，可以同时在该多份空口资源进行数据传输。其中，该多份空口资源可以对应相同的频率资源。利用空分复用技术时，高速率的数据流在发送端可以被分为多个低速率的子数据流，不同的子数据流在不同的发送天线上在相同频率资源上发射出去。这里每个子数据流又称为一个空间层，或者空间子信道。因此，利用空分复用技术时，除了时域维度和频域维度，又增加了空域维度，使得不同空间层的信号能够相互区别，从而可以增加系统传输速率。
在本申请实施例提供的上述各种方法中，发送端可以确定预处理码本，使用该预处理码本进行相应的预处理，向接收端发送信令，通过该信令指示其使用的预处理码本。其中，该信令中可以包括预处理码本的标识。
示例性地，预处理码本集合中的一个预处理码本对应一个标识，该标识称为该预处理码本的标识。发送端向接收端发送信令，该信令中包括预处理码本的标识，接收端以该标识对应的预处理码本作为该发送端的预处理码本。
应用该方法时，示例性地，接收端为基站，发送端为UE；接收端为第一UE，发送端为第二UE；或接收端为第一基站，发送端为第二基站。
在该方法中，对应于各空间层，发送端可以为各空间层独立确定预处理码本，向接收端发送信令，通过该信令指示各空间层对应的预处理码本。
在本申请实施例提供的上述各种方法中，发送端可以根据发送波形确定预处理码本集合。如果发送波形为第一波形，发送端确定预处理码本集合为第一预处理码本集合；如果发送波形为第二波形，发送端确定预处理码本集合为第二预处理码本集合；第一预处理码本集合和第二预处理码本集合不同。第一预处理码本集合和第二预处理码本集合不同还可以描述为：第一预处理码本集合中的至少一个预处理码本不包括于第二预处理码本集合中，和/或第二预处理码本集合中的至少一个预处理码本不包括于第一预处理码本集合中。为了提高数据传输效率，不同发送波形对发送的数据的要求不同，因此，发送端基于发送波形确定预处理码本集合，可以满足发送波形对待发送的数据的要求，从而提高数据传输效率。示例性地，如果发送波形为DFT-s-OFDM，预处理码本集合中包括可以恒模码本；如果发送波形为CP-OFDM，预处理码本集合中包括稀疏码本。
对于恒模码本中的一个序列，该序列中的各符号的模相同。示例性地，以一个符号为a+jb为例，该符号的模为
Figure PCTCN2018109583-appb-000099
其中，j为虚数单位，a和b为实数。对于稀疏码本中的一个序列，该序列中的若干符号的值为0。DFT-s-OFDM要求发送的数据自身具有较低的峰均功率比(peak-to-average power ratio，PAPR)，恒模码本可以具有低PAPR。当发送信号具有较低的PAPR时，功率放大器的输出功率可以更大， 效率更高，有利于提高网络的覆盖。CP-OFDM要求发送的数据间具有较低的相关性，稀疏码本的码本间相关性低。相关性低的码本有利于减少UE之间的干扰，可以增加UE复用数，从而可以提高系统传输速率。
在第一种可能的实现中，可以由接收端为发送端发送信令，该信令携带波形指示信息，用于指示接收端为发送端配置的发送波形；发送端接收接收端发送的信令，通过该信令确定发送波形。需要说明的是，此时，该方法中的发送端为进行该信令传输时的接收端，该方法中的接收端为进行该信令传输时的发送端。其中，该信令中可以包括发送波形的标识。
示例性地，可用发送波形中的一个发送波形对应一个标识，该标识称为该发送波形的标识。接收端向发送端发送信令，该信令中包括发送波形的标识，发送端可以使用该标识对应的发送波形发送数据。
在该实现中，对应于各空间层，可以为发送端独立配置发送波形。
在第二种可能的实现中，发送端可以确定发送波形，向接收端发送信令，通过该信令指示其使用的发送波形。其中，该发送波形可以用于发送端发送数据，该信令中可以包括发送波形的标识。
示例性地，可用发送波形中的一个发送波形对应一个标识，该标识称为该发送波形的标识。发送端向接收端发送信令，该信令中包括发送波形的标识，接收端可以使用该标识对应的发送波形发送数据。
在该实现中，对应于各空间层，发送端可以为各空间层独立确定发送波形，向接收端发送信令，通过该信令指示各空间层对应的发送波形。
应用该方法时，示例性地，接收端为基站，发送端为UE；接收端为第一UE，发送端为第二UE；或接收端为第一基站，发送端为第二基站。
为了增加码本数量，本申请实施例提供一种码本生成方法，该码本可以为任意类型的码本，本申请不做限制。示例性地，该码本可以为预处理码本或者其它码本。在本申请实施例中，以该码本为预处理码本，该码本生成方法为预处理码本生成方法为例进行说明。
该预处理码本生成方法为：第一预处理码本中包括R个序列，该R个序列和第二预处理码本中的序列的关系是线性关系，其中，R为大于等于1的整数。示例性地，该R个序列中的任一个序列可以是S i、-S i、S i或-jS i，序列S i是第二预处理码本中的序列，j为虚数单位。该R个序列中的不同序列的值可以相同也可以不相同，本申请不做限制。
示例性地，第二预处理码本中包括2个序列，记为{S n0,S n1}，则第一预处理码本中的任一个序列可以是S n0、-S n0、jS n0、-jS n0、S n1、-S n1、jS n1或-jS n1，j为虚数单位。
再示例性地，第二预处理码本中包括4个序列，记为{S n0,S n1,S n2,S n3}，则第一预处 理码本中的任一个序列可以是S n0、-S n0、jS n0、-jS n0、S n1、-S n1、jS n1、-jS n1、S n2、-S n2、jS n2、-jS n2、S n3、-S n3、jS n3或-jS n3，j为虚数单位。
示例性地，第一预处理码本可以为本申请实施例提供的第一种至第三种数据传输方法中进行预处理时使用的预处理码本，还可以为本申请实施例提供的第一种至第三种数据传输方法中的预处理码本集合中的码本。
再示例性地，第二预处理码本可以为本申请实施例提供的第一种至第三种数据传输方法中进行预处理时使用的预处理码本，还可以为本申请实施例提供的第一种至第三种数据传输方法中的预处理码本集合中的码本。
基于本申请实施例提供的预处理码本生成方法，本申请实施例提供了第四种数据传输方法。在本申请实施例提供的第四种数据传输方法中，发送端可以基于上述第一预处理码本和/或第二预处理码本对输入数据进行预处理，得到预处理输出序列，发送该预处理输出序列。
通过本申请实施例提供的预处理码本生成方法，可以增加预处理码本的个数，因此可以增加NOMA系统中的UE复用数，从而可以增加系统数据速率。进一步地，生成的第一预处理码本还可以保持第二预处理码本的特性。其中，增加预处理码本的个数示例性地，第二预处理码本满足低PAPR时，第一预处理码本也可以满足低PAPR。再示例性地，第二预处理码本的预处理序列间满足低相关性时，第一预处理码本的预处理序列间也满足低相关性。
上述本申请提供的实施例中，从发送端和接收端的角度对本申请实施例提供的方法进行了介绍。为了实现本申请实施例提供的方法中的各功能，发送端和接收端可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
图11是本申请实施例提供的装置1100的结构示意图。其中，装置1100可以是发送端，能够实现本申请实施例提供的第一种数据传输方法中发送端的功能；装置1100也可以是发送端中的装置，该装置能够支持发送端实现本申请实施例提供的第一种数据传输方法中发送端的功能。装置1100可以是硬件结构、软件模块、或硬件结构加软件模块。装置1100可以由芯片系统实现。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
如图11中所示，装置1100包括预处理模块1102和收发模块1104，预处理模块1102和收发模块1104耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。
预处理模块1102用于对预处理输入符号进行预处理，得到预处理输出序列。其中，预处理方法同图2涉及的方法中相应的描述，这里不再赘述。预处理输出序列为第一预处理码本中的序列，预处理模块1102还用于根据发送波形确定预处理码本集合，第 一预处理码本为预处理码本集合中的码本。其中，根据发送波形确定预处理码本集合的方法和对于第一预处理码本的描述同本申请实施例提供的方法中相应的描述，这里不再赘述。
收发模块1104用于发送预处理输出序列。当发送波形是DFT-s-OFDM时，装置1100还包括DFT模块1106，用于对预处理输出序列进行DFT变换，得到频域符号，收发模块1104具体用于发送该频域符号。其中，DFT变换方法同图3涉及的方法中相应的描述，这里不再赘述。DFT模块1106可以和收发模块1104耦合，DFT模块1106还可以和预处理模块1102耦合。如果装置1100是芯片，收发模块1104可以是用于芯片和外部装置之间的通信接口，其中，该外部装置可以是电路、器件或其它装置。
收发模块1104还可以用于接收控制信息，控制信息中包括调制方式标识、码本索引和波形信息中至少一个。如果控制信息中包括调制方式标识，预处理模块还用于根据调制方式标识确定预处理输入符号与预处理输出序列间的映射关系。如果控制信息中包括码本索引，预处理模块还用于根据码本索引用于从预处理码本集合中确定第一预处理码本。如果控制信息中包括波形信息，预处理模块还用于根据还用于根据波形信息确定发送波形。
图12是本申请实施例提供的装置1200的结构示意图。其中，装置1200可以是发送端，能够实现本申请实施例提供的第二种数据传输方法中发送端的功能；装置1200也可以是发送端中的装置，该装置能够支持发送端实现本申请实施例提供的第二种数据传输方法中发送端的功能。装置1200可以是硬件结构、软件模块、或硬件结构加软件模块。装置1200可以由芯片系统实现。
如图12中所示，装置1200包括预处理模块1202、层映射模块1204和收发模块1206，预处理模块1202和层映射模块1204耦合，预处理模块1202和收发模块1206耦合。
预处理模块1202用于对预处理输入比特进行预处理，得到预处理输出序列。其中，预处理方法同图5涉及的方法中相应的描述，这里不再赘述。预处理输出序列为第一预处理码本中的序列，预处理模块1202还用于根据发送波形确定预处理码本集合，第一预处理码本为预处理码本集合中的码本。其中，根据发送波形确定预处理码本集合的方法和对于第一预处理码本的描述同本申请实施例提供的方法中相应的描述，这里不再赘述。
层映射模块1204用于将预处理输出序列映射至v层，得到层映射输出符号，其中，v为正整数。该层映射的方法同图5涉及的方法中相应的描述，这里不再赘述。
收发模块1206用于发送预处理输出序列。当发送波形是DFT-s-OFDM时，装置1200还包括DFT模块1208，用于对层映射输出符号进行DFT变换，得到频域符号，收发模块1206具体用于发送该频域符号。其中，DFT变换方法同图5涉及的方法中相应的描述，这里不再赘述。DFT模块1208可以和收发模块1206耦合，DFT模块1208还可以和预处理模块1202耦合。如果装置1200是芯片，收发模块1206可以是用于芯片和外部装置之间的通信接口，其中，该外部装置可以是电路、器件或其它装置。
收发模块1206还可以用于接收控制信息，控制信息中包括码本索引和波形信息中 至少一个。如果控制信息中包括码本索引，预处理模块还用于根据码本索引用于从预处理码本集合中确定第一预处理码本。如果控制信息中包括波形信息，预处理模块还用于根据还用于根据波形信息确定发送波形。
图13是本申请实施例提供的装置1300的结构示意图。其中，装置1300可以是发送端，能够实现本申请实施例提供的第三种数据传输方法中发送端的功能；装置1300也可以是发送端中的装置，该装置能够支持发送端实现本申请实施例提供的第三种数据传输方法中发送端的功能。装置1300可以是硬件结构、软件模块、或硬件结构加软件模块。装置1300可以由芯片系统实现。
如图13中所示，装置1300包括预处理模块1302、层映射模块1304和收发模块1306，预处理模块1302和层映射模块1304耦合，预处理模块1302和收发模块1306耦合。
层映射模块1304用于将输入比特映射至v层，得到层映射输出比特，其中，v为正整数。
预处理模块1302用于对层映射输出比特中的每一层输出比特，根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列。其中，预处理方法同图8涉及的方法中相应的描述，这里不再赘述。预处理输出序列为第一预处理码本中的序列，预处理模块1302还用于根据发送波形确定预处理码本集合，第一预处理码本为预处理码本集合中的码本。其中，根据发送波形确定预处理码本集合的方法同本申请实施例提供的方法中相应的描述，这里不再赘述。
收发模块1306同收发模块1104。当发送波形是DFT-s-OFDM时，装置1300还包括DFT模块1308，DFT模块1308同DFT模块1106。
图14是本申请实施例提供的装置1400的结构示意图。其中，装置1400可以是发送端，能够实现本申请实施例提供的方法中发送端的功能；装置1400也可以是发送端中的装置，该装置能够支持发送端实现本申请实施例提供的方法中发送端的功能。
如图14中所示，装置1400包括处理系统1402，用于实现或者用于支持发送端实现本申请实施例提供方法中发送端的功能。处理系统1402可以是一种电路，该电路可以由芯片系统实现。处理系统1402包括至少一个处理器1422，可以用于实现或者用于支持发送端实现本申请实施例提供的方法中发送端的功能。当处理系统1402中包括除处理器以外的其它装置时，处理器1422还可以用于管理处理系统1402中包括的其它装置，示例性地，该其它装置可能为下述存储器1424、总线1426和总线接口1428中至少一个。本申请实施例中，处理器可以是中央处理器(central processing unit，CPU)，通用处理器网络处理器(network processor，NP)、数字信号处理器(digital signal processing，DSP)、微处理器、微控制器、可编程逻辑器件(programmable logic device，PLD)或它们的任意组合。
处理系统1402还可能包括存储器1424，用于存储程序指令和/或数据。如果处理系统1402包括存储器1424，处理器1422可以和存储器1424耦合。本申请实施例中，存储器包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如 快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器还可以包括上述种类的存储器的组合。
处理器1422可以和存储器1424协同操作。处理器1422可以执行存储器1424中存储的程序指令。当处理器1422执行存储器1424中存储的程序指令时，可以实现或者支持发送端实现本申请实施例提供的方法中发送端的功能。处理器1422还可能读取存储器1424中存储的数据。存储器1424还可能存储处理器1422执行程序指令时得到的数据。
当处理器实现或者支持发送端实现本申请实施例提供的第一种数据传输方法中发送端的功能时，处理器1422可以根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列；发送该预处理输出序列。
当处理器1422实现或者支持发送端实现本申请实施例提供的第二种数据传输方法中发送端的功能时，处理器1422可以根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，将预处理输出序列映射至v层，得到层映射输出符号，发送所述层映射输出符号。其中，v为正整数。
当处理器1422实现或者支持发送端实现本申请实施例提供的第三种数据传输方法中发送端的功能时，处理器1422可以将输入比特映射至v层，得到层映射输出比特，其中，v为正整数。对于层映射输出比特中的每一层输出比特，处理器1422可以根据预处理输入比特和预处理输入比特与预处理输出序列间的映射关系，确定预处理输出序列，发送预处理输出序列。
当处理器1422实现或者支持发送端实现本申请实施例提供第四种数据传输方法时，处理器基于第一预处理码本和/或第二预处理码本对输入数据进行预处理，得到预处理输出序列，发送预处理输出序列。其中，第一预处理码本中包括R个序列，该R个序列和第二预处理码本中的序列的关系是线性关系，R为大于等于1的整数。该R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，序列S i是第二预处理码本中的序列。
处理系统1402还可以包括总线接口1428，用于提供总线1426和其它装置之间的接口。
装置1400还可能包括收发器1406，用于通过传输介质和其它通信设备进行通信，从而用于装置1400中的其它装置可以和其它通信设备进行通信。其中，该其它装置可能是处理系统1402。示例性地，装置1400中的其它装置可能利用收发器1406和其它通信设备进行通信，接收和/或发送相应的信息。还可以描述为，装置1400中的其它装置可能接收相应的信息，其中，该相应的信息由收发器1406通过传输介质进行接收，该相应的信息可以通过总线接口1428或者通过总线接口1428和总线1426在收发器1406和装置1400中的其它装置之间进行交互；和/或，装置1400中的其它装置可能发送相应的信息，其中，该相应的信息由收发器1406通过传输介质进行发送，该相应的信息可以通过总线接口1428或者通过总线接口1428和总线1426在收发器1406和装置1400中的其它装置之间进行交互。
装置1400还可能包括用户接口1404，用户接口1404是用户和装置1400之间的接口，可能用于用户和装置1400进行信息交互。示例性地，用户接口1404可能是键 盘、鼠标、显示器、扬声器(speaker)、麦克风和操作杆中至少一个。
上述主要从装置1400的角度描述了本申请实施例提供的一种装置结构。在该装置中，处理系统1402包括处理器1422，还可以包括存储器1424、总线1426和总线接口1428中至少一个，用于实现本申请实施例提供的方法。处理系统1402也在本申请的保护范围。
本申请的装置实施例中，装置的模块划分是一种逻辑功能划分，实际实现时可以有另外的划分方式。例如，装置的各功能模块可以集成于一个模块中，也可以是各个功能模块单独存在，也可以两个或两个以上功能模块集成在一个模块中。
本申请实施例提供的方法中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质(例如,SSD)等。
以上各实施例仅用以说明本申请的技术方案，并不用于限定其保护范围。凡在本申请的技术方案的基础上所做的修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (18)

  1. 一种数据传输方法，其特征在于，包括：
    根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系，确定预处理输出序列；
    发送所述预处理输出序列。
  2. 根据权利要求1所述的方法，其特征在于，所述预处理输出序列为第一预处理码本中的序列，所述方法还包括：
    根据发送波形确定预处理码本集合，所述第一预处理码本为预处理码本集合中的码本。
  3. 根据权利要求2所述的方法，其特征在于，
    如果所述发送波形为离散傅里叶扩展正交频分复用DFT-s-OFDM，所述预处理码本集合为第一预处理码本集合；
    如果所述发送波形为循环前缀正交频分复用CP-OFDM，所述预处理码本集合为第二预处理码本集合；
    所述第一预处理码本集合和所述第二预处理码本集合不同。
  4. 根据权利要求3所述的方法，其特征在于，所述第一预处理码本集合中包括恒模码本，所述第二预处理码本集合中包括稀疏码本。
  5. 根据权利要求2至4中任一个所述的方法，其特征在于，所述方法还包括：接收控制信息，所述控制信息中包括以下至少一个：
    码本索引，用于从所述预处理码本集合中确定所述第一预处理码本；和
    波形信息，用于确定所述发送波形。
  6. 根据权利要求2至5中任一个所述的方法，其特征在于，所述第一预处理码本中包括R个序列，所述R个序列和第二预处理码本中的序列的关系是线性关系，其中，R为大于等于1的整数。
  7. 根据权利要求6所述的方法，其特征在于，所述R个序列和第二预处理码本中的序列的关系是线性关系，包括：
    所述R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，S i是所述第二预处理码本中的序列。
  8. 一种装置，其特征在于，包括：
    预处理模块，用于根据预处理输入符号和预处理输入符号与预处理输出序列间的映射关系确定预处理输出序列；
    收发模块，用于发送所述预处理输出序列。
  9. 根据权利要求8所述的装置，其特征在于，所述预处理输出序列为第一预处理码本中的序列，所述预处理模块还用于根据发送波形确定预处理码本集合，所述第一预处理码本为预处理码本集合中的码本。
  10. 根据权利要求9所述的装置，其特征在于，
    如果所述发送波形为离散傅里叶扩展正交频分复用DFT-s-OFDM，所述预处理码本集合为第一预处理码本集合；
    如果所述发送波形为循环前缀正交频分复用CP-OFDM，所述预处理码本集合为第二预处理码本集合；
    所述第一预处理码本集合和所述第二预处理码本集合不同。
  11. 根据权利要求10所述的装置，其特征在于，所述第一预处理码本集合中包括恒模码本，所述第二预处理码本集合中包括稀疏码本。
  12. 根据权利要求9至11中任一个所述的装置，其特征在于，所述收发模块还用于接收控制信息，所述控制信息中包括以下至少一个：
    码本索引，用于从所述预处理码本集合中确定所述第一预处理码本；和
    波形信息，用于确定所述发送波形。
  13. 根据权利要求9至12中任一个所述的装置，其特征在于，所述第一预处理码本中包括R个序列，所述R个序列和第二预处理码本中的序列的关系是线性关系，其中，R为大于等于1的整数。
  14. 根据权利要求13所述的装置，其特征在于，所述R个序列和第二预处理码本中的序列的关系是线性关系，包括：
    所述R个序列中的一个序列为S i、-S i、S i或-jS i，其中，j为虚数单位，S i是所述第二预处理码本中的序列。
  15. 一种装置，其特征在于，用于实现权利要求1至7任一项所述的方法。
  16. 一种装置，其特征在于，包括处理器和存储器；
    所述存储器，用于存储程序指令；
    所述处理器，用于调用并执行所述存储器中存储的程序指令，实现如权利要求1至7任一项所述的方法。
  17. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有指令，当所述指令在计算机上运行时，使得计算机执行权利要求1至7任一项所述的方法。
  18. 一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行权利要求1至7任一项所述的方法。
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