WO2022141326A1 - 交织、解交织方法及装置 - Google Patents

交织、解交织方法及装置 Download PDF

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Publication number
WO2022141326A1
WO2022141326A1 PCT/CN2020/141872 CN2020141872W WO2022141326A1 WO 2022141326 A1 WO2022141326 A1 WO 2022141326A1 CN 2020141872 W CN2020141872 W CN 2020141872W WO 2022141326 A1 WO2022141326 A1 WO 2022141326A1
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data
interleaving
time
units
unit
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PCT/CN2020/141872
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English (en)
French (fr)
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刘凤威
徐明慧
张佳胤
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华为技术有限公司
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Priority to PCT/CN2020/141872 priority Critical patent/WO2022141326A1/zh
Priority to CN202080106638.7A priority patent/CN116458128A/zh
Publication of WO2022141326A1 publication Critical patent/WO2022141326A1/zh

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    • 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, and in particular, to methods and apparatuses for interleaving and de-interleaving.
  • the equivalent signal-to-noise ratio (signal-to-noise ratio, SNR) or signal to interference ratio (signal to interference ratio, SIR) has a large variation range, that is, the equivalent SNR or SIR of residual phase noise on OFDM symbols is quite different.
  • the variation range of the equivalent SNR or SIR of the residual phase noise between different OFDM symbols is large.
  • the equivalent SNR or SIR is low, the code block on this symbol may be decoded incorrectly.
  • the transport block (TB) of the entire time slot is still According to wrong transmission processing, that is, the entire TB needs to be retransmitted, which reduces the transmission rate and reduces the spectral efficiency.
  • the present application provides an interleaving and deinterleaving method and device, which can improve spectral efficiency.
  • an interleaving method is provided, and the method can be executed by a transmitting end device, and can also be executed by a component of the transmitting end device, such as a processor, a chip, or a chip system.
  • the method includes: determining a first interleaving group, where the first interleaving group includes N1 data blocks, the data blocks include at least two data units, the N1 data blocks correspond to multiple code blocks, and N1 is a positive integer greater than 1.
  • the first interleaving group is interleaved to obtain an interleaved data unit sequence, where the data unit sequence includes a plurality of sub-data unit sequences, and the sub-data unit sequence includes M1 data units of each data block in the K1 data blocks, where K1 is A positive integer less than or equal to N1, and M1 is a positive integer.
  • the data blocks in the interleaving group correspond to multiple code blocks
  • the sub-data unit sequence obtained after one interleaving can include data units of multiple code blocks, so that the resource of the interleaved data unit sequence can be subsequently processed.
  • mapping multiple data units of the same code block may be mapped to multiple symbols for transmission, and the equivalent SNR/SIR of residual phase noise on different code blocks is averaged, reducing the retransmission rate and improving spectral efficiency.
  • the data block is a code block or a bit block, and the data unit is a bit; or, the data block is a code block or a modulation symbol block, and the data unit is a modulation symbol.
  • the interleaving method can be performed before modulation, and when the data unit is a modulation symbol, the interleaving method can be performed after the modulation, which enables flexible application of the interleaving method.
  • the M1 data units of each data block in the K1 data blocks are arranged in a first order, and the first order corresponding to at least two sub-data units is different. Based on this possible design, the first order corresponding to at least two sub-data units is different, which can improve the flexibility of interleaving.
  • the first order corresponding to each sub-data unit in the plurality of sub-data units is the same, the first order is the arrangement order of the K1 data blocks, and the lengths C of the N1 data blocks are the same , the interleaved data unit sequence satisfies the following formula:
  • determining the first interleaving group includes: dividing the N CB data blocks into P1 interleaving groups, where the first interleaving group is one of the P1 interleaving groups, and N CB is an intra-transmission unit
  • the number of data blocks included in different interleaving groups in the P1 interleaving groups is the same;
  • the number of data blocks included in a part of the P1 interleaving groups is a first numerical value, and the number of data blocks included in another part of the interleaving groups is a second numerical value;
  • the number of data blocks included in different interleaving groups in the P1 interleaving groups is different;
  • the number of data blocks included in different interleaving groups in the P1 interleaving groups is different, and increases or decreases;
  • the difference between the maximum value and the minimum value is less than or equal to the first threshold. Based on this possible design, the flexibility and diversity of interleaving group division can be improved.
  • N1 is determined according to one or more of the following: scheduling bandwidth, modulation and coding scheme MCS, residual phase noise, subcarrier spacing, operating frequency, phase noise model, receiver phase noise compensation algorithm , the number of phase tracking reference signals PTRS, and the number Q of data blocks transmitted in one time unit. Based on this possible design, a reasonable and optimal interleaving depth can be configured according to actual scenarios, and the complexity of interleaving and de-interleaving can be reduced.
  • N1 is determined according to the scheduling bandwidth, and the N1 is positively correlated with the scheduling bandwidth; or, the N1 is determined according to the MCS, and N1 is positively correlated with the MCS; or, N1 is determined according to the MCS
  • the residual phase noise is determined, and N1 is negatively correlated with the signal-to-noise ratio SNR equivalent to the residual phase noise.
  • the N1 data blocks are not contiguous.
  • the number of data units included in the data block is Z times the M1, and Z is a positive integer greater than 1. Based on this possible design, it can be ensured that the data units included in each data block are located in at least two sub-data unit sequences after interleaving, so that the data block is finally mapped to multiple time units for transmission, and the overall decoding performance is improved.
  • a deinterleaving method is provided, and the method can be executed by a receiving end device or by a component of the receiving end device, such as a processor, a chip, or a chip system.
  • the method includes: acquiring an interleaved data unit sequence, where the data unit sequence includes L sub-data unit sequences, data units in the data unit sequence correspond to multiple code blocks, and L is a positive integer greater than 1; Perform deinterleaving to obtain N1 data blocks, the data block includes M1 data units of each sub-data unit sequence in the H1 sub-data unit sequence, N1 is a positive integer greater than 1, H1 is a positive integer less than or equal to L, M1 is a positive integer.
  • the data block obtained by deinterleaving includes M1 data units of each sub-data unit sequence in the H1 sub-data unit sequence, that is, the data units included in one data block are located in multiple sub-data unit sequences at the transmitting end,
  • the sub-data unit sequence includes data units of multiple data blocks, so that in subsequent resource mapping of the interleaved data unit sequence, multiple data units of the same data block may be mapped to multiple symbols for transmission, thereby
  • the equivalent SNR/SIR of residual phase noise on different code blocks is averaged to reduce the retransmission rate and improve the spectral efficiency.
  • the data block is a code block or a bit block, and the data unit is a bit; or, the data block is a code block or a modulation symbol block, and the data unit is a modulation symbol.
  • the interleaving method can be performed before modulation, and when the data unit is a modulation symbol, the interleaving method can be performed after the modulation, which enables flexible application of the interleaving method.
  • de-interleaving the sequence of data units includes: de-interleaving the sequence of data units according to one or more of the following: the length of each data block in the N1 data blocks, the L sub-data The length of each sub-data unit sequence in the unit sequence, or the arrangement order of data unit blocks in each sub-data unit sequence, where the data unit block includes M1 data units.
  • the N1 data blocks are not contiguous.
  • an interleaving method is provided, and the method can be executed by a transmitting end device, and can also be executed by a component of the transmitting end device, such as a processor, a chip, or a chip system.
  • the method includes: determining a second interleaving group, the second interleaving group includes N2 first time units, the frequency domain corresponding to the first time unit includes at least two frequency domain resource units, and the frequency domain resource units are mapped with modulation symbol, N2 is a positive integer greater than 1; perform interleaving on the second interleaving group to obtain N2 second time units, which are carried on the frequency domain resource unit corresponding to each second time unit in the N2 second time units There are K2 sub-modulation symbol sequences, the sub-modulation symbol sequence includes data modulation symbols on M2 frequency-domain resource units corresponding to at least two first time units in the N2 first time units, and K2 and M2 are positive integers.
  • the modulation symbols transmitted on the frequency-domain resource units corresponding to the same time unit are adjusted to be transmitted on the frequency-domain resource units corresponding to multiple time units by interleaving, so that one code block is transmitted on multiple time units. , average the equivalent SNR/SIR of the residual phase noise on different code blocks, reduce the retransmission rate and improve the spectral efficiency.
  • the data modulation symbols on the M2 frequency-domain resource units respectively corresponding to the at least two first time units are arranged in a second order, and the second order corresponding to the at least two sub-modulation symbol sequences is different .
  • the second order corresponding to at least two sub-modulation symbol sequences is different, which can improve the flexibility of interleaving.
  • determining the second interleaving group includes: dividing the N sym time units into P2 interleaving groups, where the second interleaving group is one of the P2 interleaving groups, and N sym is an intra-transmission unit
  • the total number of time units included, the P2 interleaving groups satisfy one or more of the following:
  • the number of time units included in different interleaving groups in the P2 interleaving groups is the same;
  • the number of time units included in a part of the P2 interleaving groups is a first numerical value, and the number of time units included in another part of the interleaving groups is a second numerical value;
  • the number of time units included in different interleaving groups in the P2 interleaving groups is different;
  • the number of time units included in different interleaving groups in the P2 interleaving groups is different, and increases or decreases;
  • the difference between the maximum value and the minimum value is less than or equal to the fourth threshold. Based on this possible design, the flexibility and diversity of interleaving group division can be improved.
  • M2 is determined according to the number of code blocks Q2 transmitted in one time unit. Based on this possible design, a reasonable M2 can be configured according to the number of code blocks transmitted in the time unit, thereby reducing the complexity of interleaving and de-interleaving.
  • the M2 when Q2 is greater than or equal to the fifth threshold, the M2 satisfies the following formula:
  • the M2 satisfies the following formula:
  • N RB is the total number of resource blocks RB
  • T is the number of resource elements RE included in each RB
  • int(Q2) represents the rounding of Q2
  • f(A, B) represents the least common multiple of A and B
  • S is A positive integer greater than or equal to 2.
  • the at least two frequency domain resource units included in the frequency domain corresponding to the first time unit are discontinuous.
  • the N2 first time units are discontinuous.
  • the first time-frequency resources corresponding to the N2 first time units are the same as the first time-frequency resources corresponding to the N2 second time units, and the first time-frequency resources are used for mapping reference signals and/or A non-shared channel, or the first time-frequency resource is a reserved resource.
  • a de-interleaving method is provided, and the method can be executed by a receiving-end device, and can also be executed by a component of the receiving-end device, such as a processor, a chip, or a chip system.
  • the method includes: acquiring N2 second time units, where K2 sub-modulation symbol sequences are carried on a frequency domain resource unit corresponding to each second time unit in the N2 second time units, and N2 is a positive integer greater than 1;
  • the N2 second time units are deinterleaved to obtain N2 first time units.
  • the frequency domain resource unit corresponding to the first time unit carries a modulation symbol sequence
  • the modulation symbol sequence includes at least two second time units corresponding to The data modulation symbols on the at least M2 frequency-domain resource units of , the data modulation symbols on the at least M2 frequency-domain resource units belong to the sub-modulation symbol sequence, and K2 and M2 are positive integers.
  • the frequency domain resource units corresponding to the N2 first time units obtained by deinterleaving carry a modulation symbol sequence, where the modulation symbol sequence includes at least M2 frequency domain resource units corresponding to at least two second time units respectively.
  • Data modulation symbols, that is, at the transmitting end, the modulation symbols transmitted on the frequency-domain resource units corresponding to the same time unit are adjusted to be transmitted on the frequency-domain resource units corresponding to multiple time units through interleaving, thereby realizing a code block Transmit over multiple time units, average the equivalent SNR/SIR of residual phase noise on different code blocks, reduce retransmission rate and improve spectral efficiency.
  • the at least two frequency-domain resource units corresponding to the first time unit are discontinuous.
  • the N2 first time units are discontinuous.
  • the first time-frequency resources corresponding to the N2 first time units are the same as the first time-frequency resources corresponding to the N2 second time units, and the first time-frequency resources are used for mapping reference signals and/or or a non-shared channel, or the first time-frequency resource is a reserved resource.
  • a mapping method is provided, and the method can be executed by a sending end device, and can also be executed by a component of the sending end device, such as a processor, a chip, or a chip system.
  • the method includes: determining a first modulation symbol sequence, where the first modulation symbol sequence includes modulation symbols of at least one code block; mapping the first modulation symbol sequence to a plurality of subcarriers corresponding to N3 time units, wherein the first time unit corresponds to The first modulation symbol mapped on the first subcarrier and the second modulation symbol mapped on the first subcarrier corresponding to the second time unit are adjacent or separated by at least one modulation symbol in the first modulation symbol sequence, and the first time unit and the second time unit is two time units in the N3 time units, where N3 is a positive integer greater than 1.
  • the transmitting-end device when performing time-frequency resource mapping, performs mapping in the order of time domain first and then frequency domain, so that modulation symbols of the same code block are mapped to multiple time units for transmission, and the residual phase noise on different code blocks is averaged.
  • the equivalent SNR or SIR can reduce the retransmission rate and improve the spectral efficiency.
  • a demapping method is provided, and the method can be executed by a receiving end device or by a component of the receiving end device, such as a processor, a chip, or a chip system.
  • the method includes: receiving modulation symbols mapped on multiple subcarriers corresponding to N3 time units; demapping the modulation symbols mapped on multiple subcarriers corresponding to N3 time units to obtain a first modulation symbol sequence, wherein the first modulation symbol sequence is The first modulation symbol mapped on the first subcarrier corresponding to the time unit and the second modulation symbol mapped on the first subcarrier corresponding to the second time unit are adjacent or separated by at least one modulation symbol in the first modulation symbol sequence.
  • a time unit and a second time unit are two time units in N3 time units, where N3 is a positive integer greater than 1.
  • the first time unit is adjacent to the second time unit, and the first modulation symbol mapped on the first subcarrier corresponding to the first time unit and the second time unit The second modulation symbols mapped on the corresponding first subcarriers are adjacent in the first modulation symbol sequence.
  • At least one third time unit is spaced between the first time unit and the second time unit, and the first subcarrier corresponding to the third time unit is used for mapping reference signals and/or a non-shared channel, or, the first subcarrier corresponding to the third time unit is a reserved resource.
  • a mapping method is provided, and the method may be executed by a sending end device, or may be executed by a component of the sending end device, such as a processor, a chip, or a chip system.
  • the method includes: determining a second modulation symbol sequence, the second modulation symbol sequence including modulation symbols of at least one code block; mapping the second modulation symbol sequence to a time-frequency resource block, the time-frequency resource block including a plurality of time-frequency resource sub-blocks , the time-frequency resource sub-block includes multiple time units in the time domain, and includes multiple sub-carriers in the frequency domain, and the third modulation mapped on the second sub-carrier corresponding to the fourth time unit in the first time-frequency resource sub-block
  • the fourth modulation symbol mapped to the third subcarrier corresponding to the fourth time unit is adjacent to or separated by at least one modulation symbol in the second modulation symbol sequence, and the last modulation symbol mapped on the first time-frequency resource subblock is the same as the second modulation symbol sequence.
  • the receiving end device uses the time-frequency resource sub-block as a unit when performing time-frequency resource mapping. Mapping is performed on resource sub-blocks, that is, the time-frequency resource sub-block is used as a unit, and the time-frequency resource sub-blocks are mapped in the order of the time domain and the frequency domain, so that the modulation symbols of the same code block may be mapped to multiple time units. Up transmission, average the equivalent SNR or SIR of residual phase noise on different code blocks, improve the diversity of the equivalent channel experienced by the code blocks in the time domain, reduce the retransmission rate, and improve the spectral efficiency.
  • a demapping method is provided, and the method can be executed by a receiving end device, and can also be executed by a component of the receiving end device, such as a processor, a chip, or a chip system.
  • the method includes: receiving modulation symbols mapped on a time-frequency resource block, the time-frequency resource block includes a plurality of time-frequency resource sub-blocks, the time-frequency resource sub-block includes a plurality of time units in the time domain, and includes a plurality of sub-blocks in the frequency domain carrier; demapping the modulation symbols mapped on the time-frequency resource block to obtain a second modulation symbol sequence, the third modulation symbol mapped on the second subcarrier corresponding to the fourth time unit in the first time-frequency resource subblock is the same as the
  • the fourth modulation symbol mapped on the fourth subcarrier corresponding to the fourth time unit is adjacent to or separated by at least one modulation symbol in the second modulation symbol sequence, and the third modulation symbol mapped on the first time-frequency resource subblock is the
  • the fourth modulation symbols mapped on the time-frequency resource sub-block are adjacent to or separated by one modulation symbol in the second modulation symbol sequence, and the second time-frequency resource sub-block and the first time-frequency resource sub-block include the same time unit.
  • the second sub-carrier is adjacent to the third sub-carrier.
  • At least one fourth subcarrier is spaced between the second subcarrier and the third subcarrier, and the fourth subcarrier corresponding to the fourth time unit is used for mapping the reference signal and/or a non-shared channel, or, the fourth subcarrier corresponding to the fourth time unit is a reserved resource.
  • a communication apparatus for implementing the above-mentioned various methods.
  • the communication device may be the transmitter device in the first aspect or the third aspect or the fifth aspect or the seventh aspect, or a device including the transmitter device, or a device included in the transmitter device, such as a chip; or , the communication device may be the receiving end device in the above second aspect or the fourth aspect or the sixth aspect or the eighth aspect, or a device including the above receiving end device, or a device included in the above receiving end device.
  • the communication device includes corresponding modules, units, or means (means) for implementing the above method, and the modules, units, or means may be implemented by hardware, software, or by executing corresponding software in hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • a tenth aspect provides a communication device, comprising: a processor and a memory; the memory is used for storing computer instructions, when the processor executes the instructions, so that the communication device executes the method described in any of the above aspects.
  • the communication device may be the transmitter device in the first aspect or the third aspect or the fifth aspect or the seventh aspect, or a device including the transmitter device, or a device included in the transmitter device, such as a chip; or,
  • the communication device may be the receiving end device in the above second aspect or the fourth aspect or the sixth aspect or the eighth aspect, or a device including the above receiving end device, or a device included in the above receiving end device.
  • a communication device comprising: an interface circuit and a processor, where the interface circuit is a code/data read-write interface circuit, and the interface circuit is used to receive a computer-executed instruction (the computer-executed instruction is stored in a memory, may be read directly from memory, or possibly via other means) and transmitted to the processor; the processor is used to execute computer-implemented instructions to cause the communication device to perform the method described in any of the above aspects.
  • the communication device may be the transmitter device in the first aspect or the third aspect or the fifth aspect or the seventh aspect, or a device including the transmitter device, or a device included in the transmitter device, such as a chip; or , the communication device may be the receiving end device in the above second aspect or the fourth aspect or the sixth aspect or the eighth aspect, or a device including the above receiving end device, or a device included in the above receiving end device.
  • a twelfth aspect provides a communication device, comprising: at least one processor; the processor is configured to execute a computer program or instruction stored in a memory, so that the communication device executes the method described in any one of the preceding aspects.
  • the memory may be coupled to the processor, or it may be independent of the processor.
  • the communication device may be the transmitter device in the first aspect or the third aspect or the fifth aspect or the seventh aspect, or a device including the transmitter device, or a device included in the transmitter device, such as a chip; or , the communication device may be the receiving end device in the above second aspect or the fourth aspect or the sixth aspect or the eighth aspect, or a device including the above receiving end device, or a device included in the above receiving end device.
  • a computer-readable storage medium having instructions stored therein, when executed on a communication device, enables the communication device to perform the method described in any of the above aspects.
  • the communication device may be the transmitter device in the first aspect or the third aspect or the fifth aspect or the seventh aspect, or a device including the transmitter device, or a device included in the transmitter device, such as a chip; or , the communication device may be the receiving end device in the above second aspect or the fourth aspect or the sixth aspect or the eighth aspect, or a device including the above receiving end device, or a device included in the above receiving end device.
  • a fourteenth aspect provides a computer program product comprising instructions which, when executed on a communication device, enable the communication device to perform the method of any of the preceding aspects.
  • the communication device may be the transmitter device in the first aspect or the third aspect or the fifth aspect or the seventh aspect, or a device including the transmitter device, or a device included in the transmitter device, such as a chip; or , the communication device may be the receiving end device in the above second aspect or the fourth aspect or the sixth aspect or the eighth aspect, or a device including the above receiving end device, or a device included in the above receiving end device.
  • a fifteenth aspect provides a communication apparatus (for example, the communication apparatus may be a chip or a chip system), the communication apparatus includes a processor for implementing the functions involved in any of the above aspects.
  • the communication device further includes a memory for storing necessary program instructions and data.
  • the communication device is a chip system, it may be constituted by a chip, or may include a chip and other discrete devices.
  • a sixteenth aspect provides a communication system, where the communication system includes the transmitter device according to the first aspect and the receiver device according to the second aspect; or, includes the transmitter device according to the third aspect and the fourth aspect The receiving end device; or, comprising the transmitting end device described in the fifth aspect and the receiving end device described in the sixth aspect; or, comprising the transmitting end device described in the seventh aspect and the receiving end device described in the eighth aspect. end device.
  • 1a is a schematic diagram of a bit interleaving process of LDPC encoding
  • Figure 1b is a schematic diagram of the bit interleaving process of polar coding
  • FIG. 2 is a schematic flowchart of physical layer data processing provided by the present application.
  • 3a is a schematic diagram of the influence of a power spectral density of a phase noise on a signal provided by the application;
  • FIG. 3b is a schematic diagram of the influence of another kind of phase noise power spectral density on the signal provided by the application;
  • 4a is a schematic diagram of the impact of a common phase error on constellation points provided by the application.
  • FIG. 4b is a schematic diagram of the impact of a kind of inter-subcarrier interference on constellation points provided by the application;
  • Fig. 5a is the cumulative distribution function curve of a kind of residual phase noise and white noise provided by the application
  • FIG. 5b is a schematic diagram of residual phase noise power on an OFDM symbol provided by the present application.
  • FIG. 6 is a schematic structural diagram of a communication system provided by the application.
  • FIG. 7 is a schematic structural diagram of a communication device provided by the present application.
  • FIG. 8 is a schematic structural diagram of another communication system provided by the present application.
  • FIG. 9 is a schematic structural diagram of a terminal device and a network device provided by this application.
  • FIG. 10 is a schematic flowchart of a method for interleaving and de-interleaving provided by the present application
  • 11a is a schematic flowchart of another physical layer data processing provided by the present application.
  • FIG. 11b is a schematic flowchart of another physical layer data processing provided by the present application.
  • FIG. 12 is a schematic diagram 1 of an interleaving process of a first interleaving group provided by the present application
  • FIG. 13 is a schematic diagram 2 of an interleaving process of a first interleaving group provided by the application;
  • FIG. 14 is a schematic diagram 3 of an interleaving process of a first interleaving group provided by the present application.
  • 15 is a schematic diagram of a first interleaving group provided by this application.
  • 16 is a schematic diagram of an interleaving result of a first interleaving group provided by the application.
  • 17 is a schematic diagram of a deinterleaving process provided by this application.
  • 19 is a schematic flowchart of another method for interleaving and de-interleaving provided by the present application.
  • 20 is a schematic diagram of an interleaving process of a second interleaving group provided by the application.
  • 21 is a schematic diagram 1 of an interleaving result of a second interleaving group provided by the application.
  • 22 is a schematic diagram 2 of an interleaving result of a second interleaving group provided by the application;
  • 23 is a schematic diagram three of the interleaving result of a second interleaving group provided by the application.
  • 24 is a schematic diagram 4 of an interleaving result of a second interleaving group provided by the application.
  • 25 is a schematic flowchart of a mapping and de-mapping method provided by the application.
  • 26 is a schematic structural diagram of a time-frequency resource grid provided by this application.
  • FIG. 27 is a schematic diagram of a reference signal mapping provided by this application.
  • 29 is a schematic flowchart of another mapping and de-mapping method provided by the application.
  • 30a is a schematic structural diagram of a time-frequency resource block provided by the present application.
  • 30b is a schematic structural diagram of another time-frequency resource block provided by the present application.
  • FIG. 31 is a schematic structural diagram of a receiving end device provided by the application.
  • 33 is a schematic structural diagram of another receiving end device provided by the application.
  • FIG. 34 is a schematic structural diagram of another transmitter apparatus provided by this application.
  • CPE Common phase error
  • ICI inter-sub-carrier interference
  • N c is the number of Fast Fourier Transform (Fast Fourier Transform, FFT) points.
  • Si is the received signal on the ith subcarrier
  • si is the transmitted signal on the ith subcarrier
  • E0 is the CPE introduced by the phase noise, which causes the original signal on the subcarrier to be rotated or scaled. That is, the value of E 0 is independent of sub-carriers, so the original signal on all sub-carriers is rotated or scaled the same, which is called CPE.
  • Inter-subcarrier interference introduced for phase noise is the received signal on the ith subcarrier
  • si is the transmitted signal on the ith subcarrier
  • E0 is the CPE introduced by the phase noise
  • the turbo coding process includes a bit interleaving process, and the decoding performance is improved by bit interleaving in the code block.
  • turbo coding In turbo coding:
  • K is the size of the code block, or in other words, the number of bits included in the code block
  • f 1 and f 2 are parameters related to K.
  • the relationship between f 1 , f 2 and K may be shown in Table 1 below.
  • the LDPC coding process also includes bit interleaving, and the decoding performance is also improved by bit interleaving within the code block.
  • the specific interleaving process is as follows: according to the modulation order, the bit sequence of the code block is divided into K/Q m groups, and then the bits of each group are taken in turn to rearrange, K is the size of the code block, or the number of bits included in the code block, Q m is the modulation order.
  • bit sequence before interleaving is arranged in order according to the index size.
  • bit sequence after interleaving is shown in Figure 1a.
  • the polar coding process also includes bit interleaving, and the decoding performance is improved by interleaving within the code block in units of code blocks.
  • the code block is divided into 32 sub-blocks, the sub-blocks are rearranged in a certain order, and a new bit sequence formed by the rearranged sub-blocks is the interleaved sequence.
  • a rectangle represents a sub-block of a code block.
  • sub-block 0 to sub-block 31 are arranged in order.
  • sub-block 3 and sub-block 4 exchange the order, and sub-blocks 9-15 Swap order with sub-blocks 6-12 and cross, sub-block 27 and sub-block 28 swap order.
  • the data sent from the medium access control (MAC) layer to the physical layer is organized in the form of transport blocks (TBs). What the MAC layer sends to the physical layer can be one TB or multiple TBs.
  • the physical layer adds cyclic redundancy check (CRC) information to the TB to obtain a codeword, and segments the codeword to obtain multiple code blocks.
  • CRC cyclic redundancy check
  • the data bit stream in Fig. 2 may be a plurality of code blocks obtained after codeword segmentation.
  • the sender performs channel coding, modulation, and time-frequency resource mapping for each code block, and converts the time-frequency resource-mapped signal into a time-domain signal, adds a cyclic prefix (CP), and sends it out.
  • CP cyclic prefix
  • the receiving end after receiving the time-domain signal, the receiving end performs de-CP on the time-domain signal, converts the time-domain signal to a frequency-domain signal, demaps time-frequency resources, demodulates, and decodes the time-domain signal to obtain a data bit stream.
  • FIG. 2 only exemplarily shows some steps in the data processing flow of the physical layer.
  • the data processing flow of the physical layer may also include rate matching, layer mapping, precoding, frequency domain spectrum Forming, serial-to-parallel conversion, parallel-to-serial conversion, amplification, etc.
  • Carrier refers to a radio signal (or electromagnetic wave) with a specific bandwidth, which is the main body used to carry information.
  • the carrier bandwidth refers to the difference between the highest frequency and the lowest frequency of the carrier.
  • the frequency point of the carrier refers to the center frequency of the carrier.
  • Subcarriers A carrier can be decomposed into multiple subcarriers.
  • five subcarrier intervals are defined, which are 15KHz, 30KHz, 60KHz, 120KHz, and 240KHz respectively.
  • the subcarrier interval can be understood as the frequency range of the subcarrier, or the difference between the highest frequency and the lowest frequency of the subcarrier, and different subcarrier intervals can correspond to different slot lengths.
  • the time slot length is 1ms; when the subcarrier interval is 30KHz, the time slot length is 0.5ms; when the subcarrier interval is 60KHz, the time slot length is 0.25ms; when the subcarrier interval is 120KHz, the time slot The slot length is 0.125ms; when the subcarrier spacing is 240KHz, the time slot length is 0.0625ms.
  • the above subcarrier spacing is only an example, and the present application does not specifically limit the value of the subcarrier spacing.
  • Frequency point of sub-carrier refers to the center frequency of the sub-carrier.
  • Phase noise (PHN) in high-frequency communication can cause serious mid-RF distortion problems.
  • PSD phase noise power spectral density
  • FIG. 3a and FIG. 3b it is a schematic diagram of the PSD corresponding to different frequency points under the two phase noise models.
  • phase noise power spectral density generated at a frequency offset of 10 4 Hz is about -88dBc/Hz, -84dBc/Hz, -80dBc/Hz, that is, the higher the operating frequency, the larger the PSD of the phase noise.
  • phase noise power spectral densities generated at a frequency offset of 10 4 Hz are about -86dBc/Hz, -82dBc/Hz, - 78dBc/Hz, similarly, the higher the operating frequency, the greater the PSD of the phase noise.
  • the impact of phase noise on OFDM symbols mainly includes CPE and ICI.
  • CPE causes the rotation of signal constellation points
  • ICI causes the divergence of constellation points.
  • the residual phase noise is understood as noise or interference
  • its equivalent SNR or SIR can be expressed as: 10 ⁇ log 10 (1/ Pres,i )
  • the cumulative distribution function (CDF) curves of the equivalent SNR or SIR on different OFDM symbols are shown as solid lines in FIG. 5a.
  • the dotted line in Fig. 5a is the CDF curve of the equivalent SNR or SIR of white noise on different OFDM symbols.
  • the average power of the white noise on the multiple OFDM symbols is the same as the average power of the residual phase noise on the multiple OFDM symbols. It can be seen from Figure 5a that the variation range of the equivalent SNR or SIR caused by the residual phase noise is much larger than that of the white noise, that is, the equivalent SNR/SIR difference of the residual phase noise on different OFDM symbols is large, and the maximum difference can be 8dB.
  • the power Pres,i of residual phase noise on an OFDM symbol refers to: the average power of residual phase noise on multiple subcarriers corresponding to the OFDM symbol; the power of residual phase noise on multiple OFDM symbols
  • the physical downlink control channel (PDCCH) is transmitted on the first two OFDM symbols, and the third OFDM symbol is transmitted.
  • the demodulation reference signal (DMRS) is used, and two code blocks (CB) are transmitted on each OFDM symbol of the last 11 OFDM symbols.
  • the power of the residual phase noise on each OFDM symbol is shown in Figure 5b When the power of the residual phase noise on the third-to-last OFDM symbol is relatively large, the corresponding equivalent SNR or SIR is relatively low. Mistransmission processing, resulting in a decrease in spectral efficiency.
  • the present application provides an interleaving method that enables the same code block to be mapped to multiple OFDM symbols for transmission, and then averages the equivalent SNR or SIR of residual phase noise on different code blocks to improve transmission rate and spectral efficiency.
  • At least one item(s) below or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • at least one (a) of a, b, or c may represent: a, b, c, a and b, a and c, b and c, a and b and c, where a, b, c Can be single or multiple.
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect.
  • words “first”, “second” and the like do not limit the quantity and execution order, and the words “first”, “second” and the like are not necessarily different.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems.
  • OFDMA orthogonal frequency-division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • NTN non-terrestrial network
  • IoT Internet of Things
  • system is interchangeable with "network”.
  • the communication system may also be applicable to future-oriented communication technologies, and the technical solutions provided by the embodiments of the present application are all applicable.
  • the communication system 10a includes a transmitter device 201 and a receiver device 202 .
  • the transmitting end device 201 and the receiving end device 202 may be different types of devices, for example, one of the transmitting end device 201 and the receiving end device 202 is a network device, and the other is a terminal device.
  • the transmitter device 201 and the receiver device 202 may also be the same type of equipment, for example, the transmitter device 201 and the receiver device 202 are both terminal devices, or both the transmitter device 201 and the receiver device 202 are network devices , which is not specifically limited in the embodiments of the present application.
  • the transmitting end device 201 or the receiving end device 202 may be implemented by the communication device in FIG. 7 .
  • FIG. 7 is a schematic diagram of the hardware structure of the communication apparatus 300 provided by the present application.
  • the communication device 300 includes a processor 301, a communication line 302, and at least one communication interface (in FIG. 7, the communication interface 304 is used as an example for illustration). Further, the communication apparatus 300 may further include a memory 303 .
  • the processor 301 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors for controlling the execution of the programs of the present application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the communication line 302 may include a path to communicate information between the aforementioned components.
  • Communication interface 304 using any transceiver-like device, for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • Memory 303 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or other types of information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, CD-ROM storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being executed by a computer Access any other medium without limitation.
  • the memory may exist independently and be connected to the processor through communication line 302 .
  • the memory can also be integrated with the processor.
  • the memory 303 is used for storing computer-executed instructions for executing the solution of the present application, and the execution is controlled by the processor 301 .
  • the processor 301 is configured to execute the computer-executed instructions stored in the memory 303, thereby implementing the interleaving and de-interleaving methods provided by the following embodiments of the present application.
  • the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes or computer program codes, which are not specifically limited in the embodiments of the present application.
  • the processor 301 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 7 .
  • the communication apparatus 300 may include multiple processors, for example, the processor 301 and the processor 308 in FIG. 7 .
  • processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the communication apparatus 300 may further include an output device 305 and an input device 306 .
  • the output device 305 is in communication with the processor 301 and can display information in a variety of ways.
  • the output device 305 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) and the like.
  • Input device 306 is in communication with processor 301 and can receive user input in a variety of ways.
  • the input device 306 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.
  • the communication system 10b includes at least one network device 50 and one or more terminal devices 40 connected to the network device 50 . Further, different terminal devices 40 can communicate with each other.
  • the communication system 20b may include various transmission scenarios, such as multi-site transmission, backhaul, device to device (device to device, D2D) transmission, and the like.
  • the interleaving and deinterleaving methods of the present application can be applied to these various transmission scenarios.
  • the network device 50 in the embodiment of the present application is a device that accesses the terminal device 40 to a wireless network.
  • the network device 50 may be a node in a radio access network, may also be referred to as a base station, or may also be referred to as a radio access network (radio access network, RAN) node (or device).
  • RAN radio access network
  • the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (long term evolution, LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), such as Traditional macro base station eNB and micro base station eNB in heterogeneous network scenarios; or may also include next generation node B (gNB) in 5G new radio (NR) system, or may also include transmission Reception point (transmission reception point, TRP), home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit, BBU), baseband pool BBU pool, or WiFi access point (access point , AP), etc.; alternatively, it may also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (CloudRAN) system; or it may include non- The network equipment in the terrestrial network (non-terrestrial network, NTN) can be deployed on high-al
  • the terminal device 40 in this embodiment of the present application may be a device for implementing a wireless communication function, such as a terminal or a chip that can be used in the terminal, and the like.
  • the terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device in a 5G network or a future evolved PLMN. equipment, terminal agent or terminal device, etc.
  • the access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (SIP) telephone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices or wearable devices, virtual reality (VR) end devices, augmented reality (AR) end devices, industrial control (industrial) wireless terminal in control), wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a wireless communication Functional handheld devices computing devices or other processing devices connected to wireless modems, in-vehicle devices or wearable devices, virtual reality (VR) end devices, augmented reality (AR) end devices, industrial control (industrial) wireless terminal in control), wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal
  • the terminal may be a terminal in vehicle-to-everything (V2X) (such as a vehicle-to-everything device), a terminal in device-to-device communication, or a machine-to-machine (M2M) Terminals in communication, etc.
  • V2X vehicle-to-everything
  • M2M machine-to-machine Terminals in communication, etc.
  • Terminals can be mobile or stationary.
  • FIG. 9 it is a schematic structural diagram of a network device 50 and a terminal device 40 provided in an embodiment of the present application.
  • the terminal device 40 includes at least one processor (in FIG. 9 , it is exemplified by including one processor 401 ) and at least one transceiver (in FIG. 9 , it is exemplified by including one transceiver 403 for illustration). ). Further, the terminal device 40 may further include at least one memory (in FIG. 9 , it is exemplified by including one memory 402 for illustration), at least one output device (in FIG. 9 , it is exemplified by including one output device 404 for example) description) and at least one input device (in FIG. 9, one input device 405 is used as an example for description).
  • the processor 401, the memory 402 and the transceiver 403 are connected by a communication line.
  • the communication link may include a path to communicate information between the components described above.
  • processor 401 For the description of the processor 401, the memory 402, the output device 404, and the input device 405, reference may be made to the description of the processor 301, the memory 303, the output device 305, and the input device 306 in the communication device 300 shown in FIG. Repeat.
  • Transceiver 403 may use any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), or wireless local area networks (WLAN) Wait.
  • the transceiver 403 includes a transmitter (transmitter, Tx) and a receiver (receiver, Rx).
  • the memory 402 may exist independently and be connected to the processor 401 through a communication line.
  • the memory 402 may also be integrated with the processor 401.
  • the memory 402 is used for storing computer-executed instructions for executing the solution of the present application, and the execution is controlled by the processor 401 .
  • the processor 401 is configured to execute the computer-executed instructions stored in the memory 402, thereby implementing the interleaving and de-interleaving methods described in the embodiments of the present application.
  • the processor 401 may also perform processing-related functions in the interleaving and deinterleaving methods provided in the following embodiments of the present application, and the transceiver 403 is responsible for communicating with other devices or communication networks, which is implemented in this application.
  • This example is not specifically limited.
  • the network device 50 includes at least one processor (in FIG. 9 , it is exemplified by including one processor 501 ) and at least one transceiver (in FIG. 9 , it is exemplified by including one transceiver 503 ). Further, the network device 50 may further include at least one memory (in FIG. 9 , it is exemplified that it includes a memory 502 ) and at least one network interface (in FIG. 9 , it is exemplified that it includes a network interface 504 ). illustrate). The processor 501, the memory 502, the transceiver 503 and the network interface 504 are connected through a communication line.
  • the network interface 504 is used to connect with the core network device through a link (such as the S1 interface), or connect with the network interface of other network devices through a wired or wireless link (such as the X2 interface) (not shown in FIG. 9 ).
  • a link such as the S1 interface
  • a wired or wireless link such as the X2 interface
  • the structure shown in FIG. 9 does not constitute a specific limitation on the terminal device 40 and the network device 50 .
  • the terminal device 40 or the network device 50 may include more or less components than shown, or combine some components, or separate some components, or arrange different components.
  • the illustrated components may be implemented in hardware, software, or a combination of software and hardware.
  • the transmitting-end device and/or the receiving-end device may perform some or all of the steps in the embodiments of the present application, these steps or operations are only examples, and the embodiments of the present application may also perform other operations or Variations of various operations.
  • various steps may be performed in different orders presented in the embodiments of the present application, and may not be required to perform all the operations in the embodiments of the present application.
  • a method for interleaving and deinterleaving provided by the present application, wherein the method performed by the transmitting end device is an interleaving method, which is composed of The method performed by the receiving end device is a deinterleaving method, and the method includes the following steps:
  • the transmitting end device determines a first interleaving group.
  • the first interleaving group includes N1 data blocks, one of the N1 data blocks includes at least two data units, and the number of data units included in different data blocks may be the same or different.
  • the provided method does not specifically limit this.
  • N1 is a positive integer greater than 1.
  • first interleaving group in this application is a general term for N1 data blocks, which may also be called “the first interleaving unit” or “the first interleaving set”, or in other embodiments There may be other names, which are not specifically limited by the method provided in this application.
  • the N1 data blocks correspond to a plurality of code blocks (code blocks).
  • data blocks and data units in this application refer to different objects.
  • N1 data blocks are N1 code blocks.
  • the length of one code block is the number of bits included in one code block.
  • the data blocks in this application are bit blocks, and the data units are bits.
  • N1 data blocks are N1 bit blocks
  • the N1 data blocks correspond to multiple code blocks can be understood as: the N1 bit blocks include Bits are bits of a plurality of code blocks.
  • the bits of one code block may be divided into multiple bit blocks. For example, if a certain code block includes 80 bits, the first 40 bits of the code block may be divided into bit block 1 and the last 40 bits. Bits can be divided into bit blocks 2 .
  • the data block in this application is a modulation symbol block, and the data unit is a modulation symbol.
  • the N1 data blocks are N1 modulation symbol blocks, and the N1 data blocks corresponding to multiple code blocks can be understood as: the modulation symbols included in the N1 modulation symbol blocks are modulation symbols obtained by modulating multiple code blocks.
  • a modulation symbol block may include modulation symbols obtained after modulation by one code block, or may also include scheduling symbols obtained after modulation by multiple code blocks.
  • modulation symbols obtained after modulation by one code block can be divided into at most in a block of modulation symbols.
  • determining the first interleaving group by the transmitting end apparatus may include: dividing the N CB data blocks into P1 interleaving groups, where the first interleaving group is one of the P1 interleaving groups.
  • N CB is the total number of data blocks transmitted in one transmission unit
  • P1 is a positive integer.
  • the transmission unit in this application includes at least two time units.
  • the transmission unit may be a time slot, or a subframe, or a half frame, or a radio frame (or referred to as a frame), or a superframe, and so on.
  • the time unit is a symbol, such as an OFDM symbol, or a single carrier frequency division multiple access (single carrier frequency division multiple access, SC-FDMA) symbol or the like.
  • the OFDM symbols may be: cyclic prefixed (CP) OFDM symbols, namely CP-OFDM symbols, or discrete Fourier Transform-Spread (Discrete Fourier Transformation-Spread, DFT-s) OFDM symbols, namely DFT-s - OFDM symbols.
  • the number of data blocks included in the P1 interleaving groups satisfies one or more of the following:
  • N CB P1 times of N1.
  • the number of data blocks included in a part of the P1 interleaving groups is a first value, and the number of data blocks included in the remaining part of the P1 interleaving groups is a second value.
  • P1 is equal to 8, wherein the number of data blocks included in 3 interleaving groups is all 4, and the number of data blocks included in 5 interleaving groups is all 5.
  • the number of data blocks included in different interleaving groups in the P1 interleaving groups is different, and increases or decreases with the arrangement order of the P1 interleaving groups.
  • the increment value or the decrement value is 1. For example, if P1 is equal to 3, the number of data blocks included in the first interleaving group is 2, the number of data blocks included in the second interleaving group is 3, and the number of data blocks included in the second interleaving group is 3.
  • the number of data blocks included in the three interleaving groups is 4.
  • the difference between the maximum value and the minimum value is less than or equal to the first threshold. That is, in the number of P1 data blocks corresponding to the P1 interleaving groups, the difference between the maximum number of data blocks and the minimum number of data blocks is less than or equal to the first threshold. For example, if P1 is equal to 3, and the number of data blocks included in the 3 interleaving groups is C1, C2, and C3, and C3 is the largest and C2 is the smallest, the difference between C3 and C2 is less than or equal to the first threshold. Under this condition, the number of data blocks included in each of the P1 interleaving groups can be made as close as possible.
  • the first threshold may be predefined by a protocol, or may be determined by the transmitting end device independently, or may be determined by the transmitting end device according to a unified rule.
  • the first threshold may be indicated by the network device to the terminal device, which is not specifically limited by the method provided in this application.
  • interleaving depth interleave depth
  • the transmitting end device may first determine a first interleaving depth d init , if the total number of data blocks N CB is P1 times the first interleaving depth, then the P1 interleaving groups The interleaving depth of each interleaving group in is the first interleaving depth d init .
  • the transmitting end device may determine the second interleaving depth d new according to mod(N CB , d init ) and/or d init , so that the depth of the P1 interleaving groups satisfies the above One or more of the conditions (1) to (5).
  • one interleaving group in P1 interleaving groups includes three adjacent data blocks. data blocks, and the rest of the interleaving groups respectively include two data blocks.
  • the interleaving depth of the interleaving group corresponding to one transmission unit may include the first interleaving depth and the second interleaving depth.
  • the present application does not limit the position of the interleaving group whose interleaving depth is the second interleaving depth, which may be the last interleaving depth. or multiple interleaving groups, or may be the first or first few interleaving groups, or may be one or more interleaving groups.
  • the transmitting end device interleaves the first interleaving group to obtain an interleaved data unit sequence.
  • the data unit sequence includes multiple sub-data unit sequences, one sub-data unit sequence includes M1 data units of each data block in the K1 data blocks, and the values of K1 corresponding to different data unit sequences may be the same or different, M1 is a positive integer, and K1 is a positive integer less than or equal to N1.
  • M1 in this application may also be referred to as interleaving granularity, and these two concepts can be replaced with each other, and the method provided in this application does not specifically limit this.
  • the M1 is divisible by the number of data units included in a data block in the above N1 data blocks, and the divisor is greater than 1, that is, in this application, the number of data units included in a data block is The number is Z times M1, and Z is a positive integer greater than 1. Based on this solution, it can be ensured that the data units included in each data block are located in at least two sub-data unit sequences after interleaving, so that the data block can be mapped to multiple time units for transmission, thereby improving spectral efficiency.
  • the x-1 interleaving since the number of data units included in different data blocks in the N1 data blocks may be different, after the x-1 interleaving, all data units in some data blocks have been taken out and arranged.
  • the data block is empty, and the empty data block does not participate in the interleaving when the next interleaving is performed on the first interleaving group. Therefore, the xth interleaving is performed for the data block that is not empty.
  • the method provided in this application denote the number of data blocks that are not empty in the xth interleaving as K1, that is, the xth sub-data unit sequence includes the number of data blocks of each data block in the K1 data blocks. M1 data units. It can be understood that when the value of x is different, the value of K1 may or may not be the same.
  • the data units between different data blocks are arranged in units of M1 data units of a data block to obtain the xth sub-data unit sequence, That is to say, M1 data units of the same data block are adjacent to each other in the xth sub-data unit sequence.
  • the first order corresponding to each sub-data unit sequence is the same, or the first order corresponding to at least two sub-data unit sequences is different.
  • the interleaving process of the first interleaving group may be as shown in FIG. 12 .
  • a rectangle represents a data unit
  • the first number in the rectangle represents the index of the data block to which the data unit belongs
  • the second number represents the index of the data unit in the data block
  • the number not marked in the rectangle represents the The data unit has been taken out for arrangement
  • the finally obtained interleaved data unit sequence includes three sub-data unit sequences.
  • none of the 4 data blocks is empty, and the transmitting end device takes 2 data units from each data block to form a sub-data unit sequence 1, and the sub-data unit sequence 1 includes 4 ⁇ 2 data units , the data units of the 4 data blocks are arranged according to the arrangement order of the 4 data blocks.
  • the transmitting end device takes out 2 data units from each data block to form a sub-data unit sequence 2, and the sub-data unit sequence 2 includes 4 ⁇ 2 data units, 4
  • the data units of the data blocks are arranged according to the arrangement order of the four data blocks.
  • the sub-data unit sequence 2 includes 1 ⁇ 2 data units.
  • the interleaving process can be shown in Figure 13. Referring to Fig. 13, the interleaving process can refer to the example shown in Fig. 12, the difference is that the first order corresponding to the sub-data unit sequence 1 is the arrangement order of 4 data blocks, and the first order corresponding to the sub-data unit sequence 2 is 4 data blocks The arrangement order of the data blocks is shifted to the right by one bit, that is, according to the order of data blocks 2, 3, 4, and 1.
  • the first order corresponding to each sub-data unit sequence included in the interleaved data unit sequence is the same, and the first order is the arrangement order of the K1 data blocks,
  • the interleaved data unit sequence satisfies the following formula:
  • b is the data unit sequence of the N1 data blocks before interleaving
  • floor means rounding down
  • the N1 data blocks in the first interleaving group are not contiguous.
  • the data transmitted in one transmission unit is divided into multiple continuous data blocks, and the multiple continuous data blocks correspond to an index respectively, then the N1 discontinuous data blocks may include: N1 in the first interleaving group Among the data blocks, there are at least two adjacent data blocks whose index difference is greater than 1; or, among the N1 data blocks in the first interleaving group, the index difference between any two adjacent data blocks is greater than 1.
  • the difference between the indices of two adjacent data blocks may be equal or unequal.
  • each rectangle represents a data block
  • the number on the rectangle represents the index of the data block
  • the four data blocks included in the first interleaving group may be data block 1, data block 2, data block 3, and data block 5; or, the four data blocks included in the first interleaving group may be data block 1, data block 1, data block 5 Block 3, data block 5, and data block 7; or, the 4 data blocks included in the first interleaving group may be data block 1, data block 3, data block 4, and data block 6, and may also be other situations.
  • the provided method does not specifically limit this.
  • each of the four data blocks includes four data units, M1 Taking 2 as an example, the interleaved data unit sequence of the first interleaving group can be as shown in Figure 16, where a rectangle represents a data unit, the first number in the rectangle represents the index of the data block to which the data unit belongs, and the second A number represents the index of the data unit within the data block.
  • the present application performs interleaving between data blocks by configuring the number N1 of data blocks included in the first interleaving group and the number M1 of data units included in each data block in the sub-data unit sequence obtained after interleaving.
  • the data blocks in the interleaving group correspond to different code blocks, and a certain code block is obtained after one interleaving.
  • Each sub-data unit sequence can include data units corresponding to different code blocks, so that when performing resource mapping on the interleaved data unit sequence, multiple data units corresponding to the same code block may be mapped to multiple symbols for transmission. Then, the equivalent SNR or SIR of the residual phase noise on different code blocks is averaged, and the diversity of the equivalent channel experienced by the code blocks in the time dimension is improved, thereby improving the transmission rate and spectral efficiency.
  • N1 is determined according to one or more of the following, or in other words, the factors affecting the value of N1 include one or more of the following: scheduling bandwidth, modulation and coding scheme (MCS), Residual phase noise, subcarrier spacing, operating frequency, phase noise model, receiver phase noise compensation algorithm, the number of PTRS, the number of data blocks transmitted in one time unit Q.
  • MCS modulation and coding scheme
  • Residual phase noise Residual phase noise
  • subcarrier spacing operating frequency
  • phase noise model operating frequency
  • receiver phase noise compensation algorithm the number of PTRS, the number of data blocks transmitted in one time unit Q.
  • N1 is determined according to residual phase noise, and from the perspective of residual phase noise power, the value of N1 is positively related to the power of residual phase noise.
  • power of residual phase noise here refers to the average power of residual phase noise in multiple time units.
  • the power of the residual phase noise is related to the subcarrier spacing, the operating frequency point, the phase noise model, the phase noise compensation algorithm of the receiver, the number of PTRS, and the like.
  • the larger the subcarrier spacing the smaller the power of the residual phase noise; the higher the operating frequency, the worse the phase noise model is, and the greater the power of the residual phase noise; the worse the phase noise model, the greater the power of the residual phase noise ;
  • N1 is determined according to the MCS. It can be understood that the modulation mode and code rate are indicated by the index value of the MCS in the protocol. Generally speaking, the larger the index value of the MCS, the higher the code rate and/or the modulation order.
  • N1 resists the influence of residual phase noise, that is, N1 is positively correlated with MCS, or N1 is positively correlated with the index value of MCS, or N1 is positively correlated with modulation order and/or code rate. That is to say, the higher the modulation order, the larger the value of N1; the higher the code rate, the larger the value of N1.
  • N1 is determined according to the scheduling bandwidth, and N1 is positively correlated with the scheduling bandwidth.
  • the larger the scheduling bandwidth the more the number of data units to be transmitted in one transmission unit.
  • the maximum number of data units included in the data block is limited, the more the number of data units, the more the number of data blocks. . Since the number of time units included in one transmission unit is limited, the larger the scheduling bandwidth, the more the number of data blocks transmitted in one time unit, and correspondingly, the larger N1.
  • N1 is determined according to the quantity Q of data blocks transmitted in one time unit.
  • N1 is a third value, and as an example, the third value is greater than or equal to 2.
  • N1 is 1, and at this time, the solution of the present application may not be implemented.
  • the second threshold is 1, and the third threshold is 0.5.
  • the transmitting end device executes the interleaving method of the present application to perform interleaving between data blocks, thereby improving spectral efficiency.
  • Q is greater than or equal to 0.5 and less than 1
  • N1 is greater than or equal to 2, which ensures that when Q approaches 1, the same code block can be mapped on at least two time units for transmission.
  • the value of N1 affects the decoding delay.
  • the value of M1 determines the interleaving uniformity of the data blocks, and the smaller the value of M1 is, the more uniform the interleaving is.
  • the value of M1 is related to the channel frequency selectivity. The smaller the channel frequency selectivity is, the larger the value of M1 is, and the greater the channel frequency selectivity is, the smaller the value of M1 is.
  • the value of M1 is A when the data unit is a bit
  • the value of M1 is A when the data block is a code block or a modulation symbol block
  • the value of M1 is B when the data unit is a modulation symbol
  • the value set of M mod *B may be included in the value set of A, where M mod is the modulation order.
  • the transmitting end device may further interleave other interleaving groups except the first interleaving group in the P1 interleaving groups according to the method in S1002. Reference may be made to the relevant description of S1002. Repeat.
  • step S1003 After the transmitting end device completes the interleaving of the first interleaving group, the following step S1003 may be performed.
  • the transmitting end device sends the interleaved data unit sequence corresponding to the first interleaving group.
  • the receiving end device obtains the interleaved data unit sequence.
  • the sending end device sending the interleaved data unit sequence corresponding to the first interleaving group may be: the sending end device processes the interleaved data unit sequence and sends the processed data unit sequence.
  • the processing of the interleaved data unit sequence may include: time-frequency resource mapping, converting a frequency domain signal into a time domain signal, adding a cyclic prefix, and the like.
  • obtaining the interleaved data unit sequence by the receiving device may be: the receiving end device receives the data unit sequence processed by the transmitting end device, and performs inverse processing on the processed data unit sequence to obtain the interleaved data unit. sequence.
  • the inverse processing performed on the processed sequence of data units may include: removing cyclic prefixes, converting time-domain signals to frequency-domain signals, time-frequency resource demapping, and the like.
  • the interleaved data unit sequence obtained by the receiving end device includes L sub-data unit sequences, where L is a positive integer, and the data units in the data unit sequence correspond to multiple code blocks.
  • L is equal to the total number of sub-data unit sequences included in the interleaved data unit sequence obtained in step S1002, that is, multiple sub-data units in “the interleaved data unit sequence includes multiple sub-data unit sequences” described by the transmitting end
  • the unit sequence refers to the L sub-data unit sequence in "the interleaved data unit includes L sub-data unit sequences" described by the receiving end.
  • L is equal to three.
  • the device at the receiving end deinterleaves the sequence of data units to obtain N1 data blocks.
  • each data block in the N1 data blocks includes M1 data units of each sub-data unit sequence in the H1 sub-data unit sequence, and H1 is a positive integer less than or equal to L.
  • the receiving end device deinterleaving the data unit sequence may include: the receiving end device deinterleaving the data unit sequence according to one or more of the following: the number of data blocks is N1, and among the N1 data blocks The length of each data block, the length of each sub-data unit sequence in M1, L sub-data unit sequences, or the arrangement order of data unit blocks in each sub-data unit sequence, wherein each data unit block includes M1 data units, That is to say, the arrangement order of the data unit blocks in each sub-data unit sequence is the aforementioned first order.
  • the interleaved data unit sequence obtained by the receiving end device is shown in FIG. 17 .
  • the unit sequence is divided into 3 sub-data unit sequences; then, according to the length 4 of the first data block and the arrangement order of the data unit blocks (in this example, the arrangement order of the data blocks), the first two sub-data unit sequences 1 are taken out.
  • a data unit and the first two data units of the sub-data unit sequence 2 form a data block 1 until 4 data blocks are finally obtained.
  • the above-mentioned parameters for deinterleaving of the receiving end device may be predefined by the protocol.
  • the transmitting end device is a network device and the receiving end device is a terminal device, it may be sent by the network device to the terminal device.
  • the network device performs interleaving according to the parameter
  • the terminal device performs deinterleaving according to the parameter.
  • the network device may also send the above parameters to the terminal device.
  • the terminal device interleaves according to the parameter, and the network device uses the parameter to Deinterleaving.
  • the receiving end device may perform subsequent service processing according to the N1 data blocks, which is not specifically limited by the method disclosed in this application.
  • interleaving between data blocks is performed, so that multiple data units in the same code block may be mapped to multiple symbols for transmission, and then the residual phase on different code blocks is averaged.
  • the equivalent SNR or SIR of the noise increases the diversity of the equivalent channel experienced by the code block in the time domain.
  • corresponding deinterleaving is performed to improve the transmission rate and spectral efficiency.
  • the present application also provides an interleaving and deinterleaving method.
  • the interleaving method can be performed after the time-frequency resource mapping.
  • the deinterleaving method is performed before time-frequency resource demapping, wherein the method performed by the transmitting end device is the interleaving method, and the method performed by the receiving end device is the deinterleaving method.
  • the method includes the following steps:
  • the transmitting end device determines the second interleaving group.
  • the second interleaving group includes N2 first time units, the frequency domain corresponding to the first time unit includes at least two frequency domain resource units, the frequency domain resource units are mapped with modulation symbols, and N2 is greater than 1 positive integer.
  • the frequency domain resource unit in this application is a resource block (RB) or a resource element (RE), for example, or the RB includes multiple (eg, 12) consecutive subcarriers in the frequency domain, and the RE includes the frequency domain a subcarrier on .
  • RB resource block
  • RE resource element
  • second interleaving group in this application is a general term for multiple time units, which may also be called “second interleaving unit” or “second interleaving set”, or may have other names, The method disclosed in this application does not specifically limit this.
  • the N2 first time units are discontinuous.
  • a transmission unit includes multiple consecutive time units, and the multiple continuous time units correspond to an index respectively, then the N2 first time units are discontinuous and may include: N2 first time units of the second interleaving group , the difference between the indices of at least two adjacent first time units is greater than 1; or, in the N2 first time units of the second interleaving group, the difference between the indices of any two adjacent data blocks is greater than 1.
  • the second interleaving group may include OFDM symbol 1 , OFDM symbol 2, and OFDM symbol 4, or the second interleaving group may include OFDM symbol 1, OFDM symbol 3, and OFDM symbol 5.
  • At least two frequency domain resource units included in the frequency domain corresponding to the first time unit are discontinuous.
  • at least two adjacent frequency domain resource units corresponding to the first time unit are two discontinuous frequency domain resource units on the same carrier.
  • the determining of the second interleaving group by the transmitting end apparatus may include: dividing the N sym time units into P2 interleaving groups, where the second interleaving group is one of the P2 interleaving groups.
  • Nsym is the total number of time units included in one transmission unit.
  • the number of time units included in the P2 interleaving groups satisfies one or more of the following:
  • Nsym is P2 times of N2.
  • the number of time units included in a part of the P2 interleaving groups is the fourth value, and the number of time units included in the remaining part of the P2 interleaving groups is the fifth value.
  • the number of time units included in different interleaving groups in the P2 interleaving groups is different, and increases or decreases with the arrangement order of the P2 interleaving groups.
  • the difference between the maximum value and the minimum value is less than or equal to the fourth threshold. That is, in the number of P2 time units corresponding to the P2 interleaving groups, the difference between the maximum number of time units and the minimum number of time units is less than or equal to the fourth threshold.
  • the fourth threshold may be predefined by the protocol, or may be determined by the transmitting end device independently, or may be indicated by the receiving end device to the transmitting end device, which is not specifically limited in this application.
  • the process of determining the P2 second interleaving groups by the transmitting-end device is similar to the process of determining the P1 first interleaving groups, the difference is that the second interleaving group includes time units, and the first interleaving group includes is a data unit, and reference may be made to the relevant description in step S1001, which is not repeated here.
  • the transmitting end device interleaves the second interleaving group to obtain N2 second time units.
  • the frequency domain resource unit corresponding to each second time unit in the N2 second time units carries K2 sub-modulation symbol sequences, and the sub-modulation symbol sequence includes at least two first time units in the N2 first time units
  • K2 and M2 are positive integers.
  • time-frequency resources corresponding to the N2 second time units and the N2 first time units are the same, and the difference is that some or all of the modulation symbols carried on the same time-frequency resources are different, or that the same modulation symbols are interleaved.
  • the pre-interleaving and post-interleaving are located on different time-frequency resources.
  • the method of interleaving the second interleaving group by the transmitting end device may be different:
  • the modulation symbols mapped on the frequency domain resource unit corresponding to the first time unit are data modulation symbols
  • the transmitting end device interleaves the second interleaving group to obtain N2 second time units, which may include: Perform Y interleaving on the second interleaving group to obtain N2 second time units.
  • the "data modulation symbol” in this application refers to the modulation symbol corresponding to the service data, which is different from the modulation symbol corresponding to the reference signal or the non-shared channel.
  • the reference signal may be one or more of the following: a sounding reference signal (SRS), a demodulation reference signal (de-modulation reference signal, DMRS), a PTRS, an uplink positioning signal (uplink positioning RS) ), channel status information reference signal (CSI-RS), cell reference signal (CRS), time/frequency tracking reference signal (TRS), primary synchronization signal (primary synchronization signal, PSS), secondary synchronization signal (secondary synchronization signal, SSS), etc.
  • SRS sounding reference signal
  • DMRS demodulation reference signal
  • PTRS a PTRS
  • uplink positioning signal uplink positioning signal
  • uplink positioning RS channel status information reference signal
  • CSI-RS channel status information reference signal
  • CRS cell reference signal
  • TRS time/frequency tracking reference signal
  • primary synchronization signal primary synchronization signal
  • PSS secondary synchronization signal
  • secondary synchronization signal secondary synchronization signal
  • a non-shared channel refers to a channel other than a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH), which may be one or more of the following: Physical Random Access Channel (PRACH), Physical Uplink Control Channel (PUCCH), Physical Broadcast Channel (PBCH), Physical Downlink Control Channel (PDCCH) Wait.
  • PRACH Physical Random Access Channel
  • PUCCH Physical Uplink Control Channel
  • PBCH Physical Broadcast Channel
  • PDCCH Physical Downlink Control Channel
  • the indices of carriers or carrier frequency points corresponding to M2 frequency domain resource units corresponding to different first time units may be the same or different, which is not specifically limited in this application. That is to say, the M2 frequency-domain resource units corresponding to different first time units may be frequency-domain resource units in the same carrier, or may be frequency-domain resource units in different carriers.
  • the second interleaving group includes a first time unit 0, a first time unit 1, and a first time unit 2, and in one interleaving, the carriers or carriers corresponding to the M2 frequency domain resource units of the first time unit 0
  • the index of the frequency point is index 1
  • the index of the carrier or carrier frequency point corresponding to the M2 frequency domain resource units of the first time unit 1 and the first time unit 2 is index 2.
  • the indices of the M2 frequency-domain resource units corresponding to different first time units may be the same or different. That is to say, when the M2 frequency domain resource units corresponding to different first time units belong to the same carrier, the M2 frequency domain resource units corresponding to different first time units are located in the same or different positions in the carrier.
  • the index of the carrier or carrier frequency point corresponding to the M2 frequency domain resource units of the first time unit 1 and the first time unit 2 is index 2
  • the carrier 2 includes multiple frequency domain resource units
  • the M2 frequency domain resource units corresponding to 1 are the first M2 frequency domain resource units of carrier 2
  • the M2 frequency domain resource units corresponding to the second time unit 2 are the last M2 frequency domain resource units of carrier 2 .
  • the M2 frequency domain resource units corresponding to each first time unit in the N2 first time units are The data modulation symbols on the sub-modulation symbol sequence are arranged, that is, the data modulation symbols on the M2 frequency-domain resource units corresponding to the same time unit in the sub-modulation symbol sequence are adjacent.
  • the second order corresponding to each sub-modulation symbol sequence is the same, or the second order corresponding to at least two sub-modulation symbol sequences is different.
  • the frequency domain corresponding to the first time unit includes 6 frequency domain resource unit blocks, and one frequency domain resource unit block includes M2 frequency domain resource units as an example, the interleaving of the second interleaving group
  • the process can be shown in Figure 20.
  • a rectangle represents a time unit in the time dimension and a frequency domain resource unit block in the frequency domain dimension
  • the first number in the first row in the rectangle represents the time unit index
  • the second number represents the frequency domain resource
  • the q in the brackets in the second row of the rectangle identifies one or more data modulation symbols carried on the frequency-domain resource unit block
  • the rectangle without q indicates the data modulation carried by the frequency-domain resource unit block represented by the rectangle Symbols have been taken out for arrangement. It can be understood that, in the following example, the time unit in the left figure in FIG. 20 is the first time unit, and the time unit in the right figure is the second time unit.
  • Figure 20 exemplarily shows two interleaving processes, and other interleaving processes are similar. The following describes the specific interleaving process as follows:
  • the data modulation symbols q0 and q13 carried on the frequency-domain resource unit blocks (0, 0), (1, 2), and (2, 1) are extracted from the first time units 0, 1, and 2, respectively.
  • q8 are arranged in the second order to obtain a sub-modulation symbol sequence ⁇ q0 q13 q8 ⁇ , the sub-modulation symbol sequence consists of the first three frequency domain resource unit blocks (0, 0), (0, 1), (0, 2) bearing.
  • the second order is the arrangement order of the frequency domain resource blocks in the frequency domain, and the frequency domain positions of the M2 frequency domain resource units corresponding to different time units are different.
  • the data modulation symbols q1 and q6 carried on the frequency-domain resource unit blocks (0, 1), (1, 0), and (2, 2) are extracted from the first time units 0, 1, and 2, respectively.
  • q14 are arranged in the second order to obtain a sub-modulation symbol sequence ⁇ q6 q1 q14 ⁇ , the sub-modulation symbol sequence consists of the first three frequency domain resource unit blocks (1, 0), (1, 1), (1, 2) bearing.
  • the data modulation symbols q2 and q7 carried on the frequency-domain resource unit blocks (0, 2), (1, 1), and (2, 0) are extracted from the first time units 0, 1, and 2, respectively.
  • q12 are arranged in the second order to obtain a sub-modulation symbol sequence ⁇ q12 q7 q2 ⁇ , the sub-modulation symbol sequence consists of the first three frequency domain resource unit blocks (2, 0), (2, 1), (2, 2) bearing.
  • the data modulation symbols q3 and q11 carried on the frequency domain resource unit blocks (0, 3), (1, 5), and (2, 4) are extracted from the first time units 0, 1, and 2, respectively.
  • q16 are arranged in the second order to obtain a sub-modulation symbol sequence ⁇ q3 q16 q11 ⁇ , the sub-modulation symbol sequence consists of the last three frequency domain resource unit blocks (0, 3), (0, 4), (0, 5) bearing.
  • the data modulation symbols q4 and q9 carried on the frequency-domain resource unit blocks (0, 4), (1, 3), and (2, 5) are extracted from the first time units 0, 1, and 2, respectively.
  • q17 are arranged in the second order to obtain a sub-modulation symbol sequence ⁇ q9 q4 q17 ⁇ , the sub-modulation symbol sequence consists of the last three frequency domain resource unit blocks (1, 3), (1, 4), (1, 5) bearing.
  • the data modulation symbols q5 and q10 carried on the frequency-domain resource unit blocks (0, 5), (1, 4), and (2, 3) are taken out from the first time units 0, 1, and 2, respectively.
  • q15 are arranged in the second order to obtain a sub-modulation symbol sequence ⁇ q15 q10 q5 ⁇ , the sub-modulation symbol sequence is composed of the last three frequency domain resource unit blocks (2, 3), (2, 4), (2, 5) bearing.
  • the second order in the second to sixth interleaving processes is the same as the second order in the first interleaving process, and the frequency domain positions of the M2 frequency domain resource units corresponding to each first time unit. different.
  • the frequency domain resource unit in which the interleaving is located The frequency domain resource unit where the interleaving is located q0 (0,0) (0,0) q1 (0,1) (1,1) q2 (0,2) (2,2) q3 (0,3) (0,3) q4 (0,4) (1,4) q5 (0,5) (2,5) q6 (1,0) (1,0) q7 (1,1) (2,1) q8 (1,2) (0,2) q9 (1,3) (1,3) q10 (1,4) (2,4) q11 (1,5) (0,5) q12 (2,0) (2,0) q13 (2,1) (0,1) q14 (2,2) (1,2) q15 (2,3) (2,3) q16 (2,4) (0,4) q17 (2,5) (1,5)
  • interleaving sequence from the first time to the sixth time in the above-mentioned interleaving process is only an exemplary description of the present application. In practical applications, the above-mentioned six interleaving times can be performed in any order, which is not specifically limited in this application. .
  • the frequency domain corresponding to the first time unit includes 6 frequency domain resource unit blocks, one frequency domain resource unit block includes M2 frequency domain resource units, and M2 corresponding to different first time units.
  • the frequency domain positions of the frequency domain resource units are the same, and the second order is the arrangement order of the first time units as an example, and the interleaving result of the second interleaving group may be as shown in FIG. 21 .
  • the frequency domain corresponding to the first time unit includes 6 frequency domain resource unit blocks, one frequency domain resource unit block includes M2 frequency domain resource units, and M2 corresponding to different first time units.
  • the frequency domain positions of the frequency domain resource units are different, and the second order is the arrangement order of the first time units as an example, and the interleaving result of the second interleaving group may be shown in FIG. 22 .
  • the modulation symbols mapped on the frequency domain resource units corresponding to the N2 first time units may also include modulation symbols corresponding to the reference signal and/or modulation symbols corresponding to the non-shared channel. symbol, or some frequency domain resource units corresponding to the first time unit are reserved resources. That is to say, some frequency domain resource units corresponding to the first time unit are used for reference signals or non-shared channels, or reserved.
  • the sender device can perform interleaving in the following three ways:
  • Manner 1 The interleaving mode is the same when the modulation symbols mapped to the frequency domain resource unit corresponding to the first time unit are all data modulation symbols. After interleaving in this manner, the location of the reference signal, the unshared channel, or the reserved resource changes, and the network device needs to reconfigure the location of the reference signal, the unshared channel, or the reserved resource according to the interleaving rule.
  • reference signal 1 represented by rs1 in FIG. 23
  • reference signal 2 represented by rs2 in FIG. 23
  • the frequency domain resource unit block (0, 2) is carried. After interleaving, the reference signal 1 is carried by the frequency domain resource unit block (2, 2) on the second time unit 2; before interleaving, the reference signal 2 is carried by the first time unit 2.
  • the frequency domain resource unit block (2, 4) on the second time unit is carried, after interleaving, the reference signal 2 is carried by the frequency domain resource unit block (0, 4) of 0 on the second time unit, and the positions of reference signal 1 and reference signal 2 occur. Variety.
  • the interleaving process of the transmitting end device is relatively simple, and the interleaving complexity is low, so that the implementation complexity of the transmitting end device is low.
  • the interleaving mode is similar to the interleaving mode when the modulation symbols mapped to the frequency-domain resource units corresponding to the first time unit are all data modulation symbols, except that a certain frequency-domain resource unit corresponding to the first time unit is used for mapping reference Signals or non-shared channels, or when the frequency domain resource unit is a reserved resource, the frequency domain resource unit does not participate in interleaving. That is to say, the first time-frequency resources corresponding to the N2 first time units are the same as the first time-frequency resources corresponding to the N2 second time units, and the first time-frequency resources are used to carry reference signals and/or non-shared channels , or, the first time-frequency resource is a reserved resource.
  • reference signal 1 represented by rs1 in FIG. 24
  • reference signal 2 represented by rs2 in FIG. 24
  • the frequency domain resource unit block (0, 2) is carried, and the reference signal 2 is carried by the frequency domain resource unit block (2, 4) on the first time unit 2.
  • the frequency domain resource unit block (1, 2) The data modulation symbols above should be interleaved into the frequency domain resource element block (0, 2), however, the frequency domain resource element block (0, 2) carries the reference signal 1, and the frequency domain resource element block does not participate in the interleaving, therefore, After interleaving, the position of the reference signal 1 mapped on the frequency domain resource unit block (0, 2) remains unchanged. Similarly, the location of the reference signal 2 mapped on the frequency domain resource unit block (2, 4) does not change.
  • the network device does not need to reconfigure the position of the reference signal, the non-shared channel, or the reserved resources, and the implementation complexity of the network device is low.
  • Mode 3 Similar to Mode 2 above, the difference is that the frequency domain resource unit includes multiple subcarriers, the first subcarrier of a certain frequency domain resource unit corresponding to the first time unit does not participate in interleaving, and the frequency domain resource unit except the first subcarrier. Other subcarriers other than a carrier still participate in the interleaving, wherein the first subcarrier is mapped with a reference signal or a non-shared channel, or the first subcarrier is a reserved resource.
  • the above three manners may be used alone or in combination. Further, the transmitting end device may select an appropriate interleaving manner according to the specific type of the unshared channel or the reference signal.
  • the interleaving is performed by adopting the foregoing manner 2 or manner 3.
  • PTRS1 is mapped on the frequency domain resource unit (x1, y1) corresponding to the first time unit x1
  • PTRS2 is mapped on the frequency domain resource unit (x2, y2) corresponding to the first time unit x2, if the method is adopted
  • PTRS2 is mapped on the frequency domain resource unit (x1, y1) corresponding to the first time unit x1
  • PTRS1 is mapped on the frequency domain resource unit (x2, y2) corresponding to the first time unit x2, then this time Mode 1 is adopted for interleaving.
  • the position of the PTRS remains unchanged from the overall point of view.
  • the modulation symbols transmitted on the frequency domain resource units corresponding to the same time unit before interleaving are adjusted to be transmitted on the frequency domain resource units corresponding to multiple time units by interleaving, so that one code block can be transmitted at multiple time units.
  • the equivalent SNR or SIR of the residual phase noise on different code blocks is averaged to improve the diversity of the equivalent channel experienced by the code block in the time domain, thereby improving the spectral efficiency.
  • N2 is determined according to one or more of the following: residual phase noise, subcarrier spacing, operating frequency, phase noise model, receiver phase noise compensation algorithm, and number of PTRS.
  • M2 is determined according to the number Q2 of code blocks transmitted in one time unit.
  • the frequency domain resource unit is RE, exemplary:
  • M2 satisfies the following formula:
  • M2 satisfies the following formula:
  • N RB is the total number of resource blocks RB
  • T is the number of resource elements RE included in each RB
  • int(Q2) represents the rounding of Q2
  • f(A, B) represents the least common multiple of A and B
  • S is A positive integer greater than or equal to 2.
  • the fifth threshold may be, for example, 1, and the sixth threshold may be, for example, 0.5.
  • the transmitting end device may also interleave other interleaving groups except the second interleaving group in the P2 interleaving groups according to the method in S1902. Reference may be made to the relevant description of S1902, which is not described here. Repeat.
  • step S1903 may be performed.
  • the transmitting end device sends N2 time units.
  • the receiving end device acquires the N2 time units.
  • the sending end device sends N2 time units, which can be understood as: the sending end device sends multiple sub-modulation symbol sequences corresponding to the N2 time units.
  • the receiving end device acquires multiple sub-modulation symbol sequences corresponding to the N2 time units.
  • the frequency domain resource unit corresponding to each of the N2 second time units acquired by the receiving end device carries K2 sub-modulation symbol sequences.
  • the receiving end device deinterleaves the N2 second time units to obtain N2 first time units.
  • the frequency domain resource unit corresponding to the first time unit carries a modulation symbol sequence
  • the modulation symbol sequence includes data modulation symbols on at least M2 frequency domain resource units corresponding to at least two second time units respectively, the at least M2
  • the data modulation symbols on the frequency domain resource units belong to the sub-modulation symbol sequence, and K2 and M2 are positive integers.
  • the receiving end apparatus performing deinterleaving on the N2 second time units may include: the receiving end apparatus deinterleaving the N2 second time units according to one or more of the following: the second interleaving group includes: The number N2 of time units, the number M2 of frequency domain resource units included in the frequency domain resource unit block, or the second order corresponding to the sub-modulation symbol sequence.
  • the receiving end device determines the number of second time units for deinterleaving according to N2, and then extracts the data modulation symbols on the M2 frequency domain resource units corresponding to at least two second time units respectively, according to the second order.
  • a modulation symbol sequence carried on the frequency domain resource corresponding to the first time unit is formed.
  • the modulation symbol sequence carried on the first time unit 0 includes: the second time unit 0, the second time unit 1 , the data modulation symbols on two frequency-domain resource unit blocks corresponding to the second time unit 2 respectively, and the data modulation symbols on one frequency-domain resource unit block corresponding to each second time unit belong to a sub-modulation symbol sequence.
  • the above-mentioned parameters for deinterleaving of the receiving end device may be predefined by the protocol. Alternatively, it may be sent by the sending end device to the receiving end device, which is not specifically limited in this application.
  • the receiving end device may perform service processing according to the modulation symbol sequence, which is not specifically limited in this application.
  • the modulation symbols transmitted on the frequency domain resource units corresponding to the same time unit before interleaving are adjusted to be transmitted on the frequency domain resource units corresponding to multiple time units.
  • the equivalent SNR or SIR of the residual phase noise on different code blocks is averaged, and the diversity of the equivalent channel experienced by the code block in the time domain is improved.
  • Corresponding deinterleaving improves spectral efficiency.
  • the above embodiments provide interleaving and deinterleaving methods to average the equivalent SNR or SIR of residual phase noise on different code blocks, thereby improving spectral efficiency.
  • the present application also provides a mapping and demapping method for improving spectral efficiency.
  • the mapping method can be used for time-frequency resource mapping
  • the demapping method can be used for time-frequency resource demapping.
  • the method executed by the transmitting end device is a mapping method
  • the method executed by the receiving end device is a demapping method, which specifically includes the following step:
  • the transmitting end device determines a first modulation symbol sequence.
  • the first modulation symbol sequence includes modulation symbols of at least one code block. It can be understood that the modulation symbols included in the first modulation symbol sequence are data modulation symbols.
  • the transmitting end device maps the first modulation symbol sequence to multiple subcarriers corresponding to N3 time units, where N3 is a positive integer greater than 1.
  • the transmitting end device may map the first modulation symbol sequence to multiple subcarriers corresponding to the N3 time units in various ways:
  • the apparatus at the transmitting end may map the first modulation symbol sequence to multiple subcarriers corresponding to the N3 time units in an order of first in the time domain and then in the frequency domain. Specifically, for the first subcarrier k, the transmitting end device first performs mapping on the first subcarrier k corresponding to the N3 time units according to the sequence of the N3 time units, and after the mapping corresponding to the first subcarrier k is completed , for the next subcarrier k+1 of the first subcarrier k, the transmitting end device also performs mapping on the subcarrier k+1 corresponding to the N3 time units according to the sequence of the N3 time units, and so on.
  • the first subcarrier k is one of multiple subcarriers corresponding to N3 time units.
  • a time-frequency resource grid is represented by a rectangle, denoted as RG n, m , the first subscript n is the time unit index, the second subscript m is the subcarrier index, N3 is equal to 4, M3 is equal to 6, and the first subcarrier is subcarrier 1.
  • the mapping order can be: RG 1,1 , RG 2,1 , RG 3,1 , RG 4,1 .
  • the transmitting end device performs mapping in the order of RG 1,2 , RG 2,2 , RG 3,2 , RG 4,2 , and so on.
  • the first time unit and the second time unit in the N3 time units if the first subcarrier corresponding to the first time unit and the first subcarrier corresponding to the second time unit are all valid subcarriers, and when the first time unit and the second time unit are adjacent time units in the N3 time units, in the first modulation symbol sequence, the first subcarrier corresponding to the first time unit is mapped on the first subcarrier.
  • the first modulation symbol of is adjacent to the second modulation symbol mapped on the first subcarrier corresponding to the second time unit.
  • the effective subcarriers refer to subcarriers used for mapping data modulation symbols.
  • the transmitting end device may first divide the N3 time units into multiple time unit groups, and for the first subcarrier k of the first time unit group, according to the time units in the first time unit group The first subcarrier k corresponding to the time unit in the first time unit group is mapped in sequence. Afterwards, for the subcarrier k+1 of the first time unit group, according to the order of the time units in the first time unit group, the subcarrier k+1 corresponding to the time unit in the first time unit group is sequentially performed. Mapping, and so on, until the mapping on the multiple subcarriers corresponding to the first time unit group is completed. Next, the second time unit group is mapped in the same order as the first time unit group, and so on.
  • the transmitting end device may divide time units 1 to 4 into two time unit groups, wherein the first time unit group includes time unit 1 and time unit 3, and the second time unit group includes time unit 1 and time unit 3.
  • the unit group includes time unit 2 and time unit 4.
  • the transmitting end device uses the time unit group as a unit, and performs mapping in the time unit group in the order of the time domain first and then the frequency domain, for example:
  • the mapping sequence corresponding to the first time unit group is: RG 1,1 ,RG 3,1 ,RG 1,2 ,RG 3,2 ,...,RG 1,6 ,RG 3,6 ;
  • the mapping sequence corresponding to the second time unit group is RG 2,1 , RG 4,1 , RG 2,2 , RG 4,2 , . . . , RG 2,6 , RG 4,6 .
  • the first time unit and the second time unit in the N3 time units if the first subcarrier corresponding to the first time unit and the first subcarrier corresponding to the second time unit The subcarriers are all valid subcarriers, and when the first time unit and the second time unit are adjacent time units in the time unit group, in the first modulation symbol sequence, the first time unit corresponding to the first subcarrier is mapped.
  • the first modulation symbol is adjacent to the second modulation symbol mapped on the first subcarrier corresponding to the second time unit.
  • the multiple subcarriers corresponding to the N3 time units may be arranged in an order of increasing frequency.
  • the frequency corresponding to the first subcarrier k is lower than that of the subcarrier k+1 or, the multiple subcarriers corresponding to the N3 time units may be arranged in the order of decreasing frequency.
  • the frequency corresponding to the first subcarrier k is higher than the frequency corresponding to the subcarrier k+1.
  • first time unit and the second time unit in the N3 time units taking the first time unit and the second time unit in the N3 time units as an example, for the first implementation manner, in the N3 time units, between the first time unit and the second time unit One or more third time units are spaced, or, for the second implementation, within the time unit group, one or more third time units are spaced between the first time unit and the second time unit.
  • the transmitting end device performs processing in the following two ways during mapping:
  • Manner 1 The transmitting end device maps the first modulation symbol to be mapped to the first subcarrier corresponding to the second time unit.
  • the transmitting end device maps the first modulation symbol to be mapped to the first subcarrier corresponding to the R+1th time unit after the first time unit, R is the number of third time units in the interval between the first time unit and the second time unit, that is, the R+1th time unit after the first time unit is the second time unit.
  • the first time unit is time unit 1
  • the second time unit is time unit 3
  • a third time unit spaced between the first time unit and the second time unit is time unit 2 as an example
  • the first subcarrier corresponding to time unit 2 the instant frequency resource grid RG 2,1
  • the transmitting end device maps q n1 to the first subcarrier corresponding to the time unit 3 , that is, the frequency resource grid RG 3,1 .
  • the transmitting end uses this method for processing, the first modulation symbol mapped on the first subcarrier corresponding to the first time unit and the second modulation symbol mapped on the first subcarrier corresponding to the second time unit are adjacent in the first modulation symbol sequence.
  • Manner 2 The transmitting end device maps the R+1 th modulation symbol to be mapped to the first subcarrier corresponding to the second time unit.
  • the transmitting end device maps the R+1th modulation symbol to be mapped to the first subcarrier corresponding to the R+1th time unit after the first time unit above, the R+1 th time unit after the first time unit is the second time unit.
  • the first modulation symbol to be mapped to the R th modulation symbol to be mapped is not mapped to the time-frequency resource, or, in other words, the first modulation symbol to be mapped to the R th modulation symbol to be mapped uses 0 instead.
  • the first modulation symbol to be mapped to the R-th modulation symbol to be mapped are respectively mapped to the first sub-carrier corresponding to the first time unit after the first time unit to the R-th time unit, and then
  • the reference signal and/or the transmission signal coverage on the non-shared channel, that is, the transmitting end device rewrites or remaps the first subcarrier corresponding to the first time unit after the first time unit to the Rth time unit , which is equivalent to discarding the first modulation symbol to be mapped to the R th modulation symbol to be mapped by the transmitting end device.
  • the first time unit is time unit 1
  • the second time unit is time unit 3
  • a third time unit spaced between the first time unit and the second time unit is time unit 2 as an example
  • the first subcarrier corresponding to time unit 2 the instant frequency resource grid RG 2,1
  • the first subcarrier to be mapped is used for mapping reference signals and/or non-shared channels, or is reserved for resources
  • the first subcarrier to be mapped is The modulation symbol is q n1
  • the second modulation symbol to be mapped is q n2
  • the transmitting end device maps q n2 to the first subcarrier corresponding to time unit 3, that is, the frequency resource grid RG 3,1 , q n1 is discarded.
  • the transmitting end adopts the second method for processing, in the first modulation symbol sequence, the first modulation symbol mapped on the first subcarrier corresponding to the first time unit and the first subcarrier corresponding to the second time unit R modulation symbols are spaced between the second modulation symbols mapped above.
  • the above-mentioned manner 1 and manner 2 may be used alone or in combination.
  • the transmitting end device may use different ways to process different reference signals, for example, when a certain subcarrier corresponding to the time unit is used for mapping zero-power (zero-power, ZP) reference signals or for reserving resources, the first way is used. Processing, when used for mapping non-zero power (non-zero power, NZP) reference signals, method 2 is used for processing; or, when a certain subcarrier corresponding to a time unit is used for mapping reference signals with large resource occupation overhead, method 1 is used for processing , and the method 2 is used for processing when mapping reference signals with less resource occupation overhead.
  • ZP zero-power
  • NZP non-zero power
  • the transmitting end device transmits the first modulation symbol sequence mapped on the multiple subcarriers corresponding to the N3 time units.
  • the receiving end device receives the modulation symbols mapped on the multiple subcarriers corresponding to the N3 time units.
  • the receiving end device before step S2503, the receiving end device further determines a plurality of subcarriers corresponding to the N3 time units to determine time-frequency resources for receiving modulation symbols.
  • the receiving end device demaps the modulation symbols mapped on the multiple subcarriers corresponding to the N3 time units to obtain a first modulation symbol sequence.
  • the receiving end device may perform demapping according to the demapping order corresponding to the mapping order of the transmitting end device. After the first modulation symbol sequence is obtained, processing such as demodulation and decoding can be continued, which is not specifically limited in this application.
  • the receiving-end device when performing time-frequency resource mapping, performs mapping in the order of time domain first and then frequency domain, so that modulation symbols of the same code block are mapped to multiple time units for transmission, and the residual phase noise on different code blocks is averaged.
  • the equivalent SNR or SIR of the code block increases the diversity of the equivalent channel experienced by the code block in the time domain, and at the receiving end, the corresponding demapping is performed, thereby improving the spectral efficiency.
  • mapping and demapping method In addition to the mapping and demapping method shown in FIG. 25 , the present application also provides another mapping and demapping method. Taking the interaction between the transmitting end device and the receiving end device shown in FIG. 6 as an example, as shown in FIG.
  • the method performed by the end device is a mapping method
  • the method performed by the receiving end device is a demapping method, which specifically includes the following steps:
  • the transmitting end device determines a second modulation symbol sequence.
  • the second modulation symbol sequence includes modulation symbols of at least one code block. It can be understood that the modulation symbols included in the first modulation symbol sequence are data modulation symbols.
  • the transmitting end device maps the second modulation symbol sequence to a time-frequency resource block.
  • the time-frequency resource block includes multiple time-frequency resource sub-blocks, and each time-frequency resource sub-block includes multiple time units in the time domain and multiple subcarriers in the frequency domain.
  • the subcarriers included in the multiple time-frequency resource subblocks form a subcarrier set, and the subcarrier set is all the subcarriers available to the transmitting device in one transmission.
  • the subcarriers included in at least two time-frequency resource subblocks are completely different.
  • the number of time units and/or the number of subcarriers included in different time-frequency resource subblocks may be the same or different.
  • the time-frequency resource block includes 4 time-frequency resource sub-blocks, each time-frequency resource sub-block includes 4 time units and 6 sub-carriers, and one sub-carrier forms a time-frequency resource grid, with a rectangle.
  • the same filling pattern represents the time-frequency resource grid in the same time-frequency resource sub-block as an example
  • the time-frequency resource block can be shown in Figure 30a
  • the subcarrier in Figure 30a is the transmission All subcarriers available to an end device in a transmission.
  • the time-frequency resource grid in each time-frequency resource sub-block is independently numbered, denoted as RG_N n,m , N represents the index of the time-frequency resource sub-block, and the first subscript n is the time unit in the time-frequency resource sub-block.
  • the index in the block N, the second subscript m is the index of the subcarrier in the time-frequency resource sub-block N.
  • the multiple time units included in the first time-frequency resource sub-block may be discontinuous in all the time units included in the entire time-frequency resource block.
  • the first time-frequency resource sub-block includes The four time units can be time unit 1, time unit 2, time unit 5, and time unit 6 included in the time-frequency resource block.
  • the four time units included in the first time-frequency resource sub-block may be time unit 1, time unit 3, time unit 5, and time unit 7 included in the time-frequency resource block.
  • the transmitting-end device mapping the second modulation symbol sequence to the time-frequency resource block may include: the transmitting-end device mapping the second modulation symbol sequence to the time-frequency resource block in units of time-frequency resource subblocks. In the first time-frequency resource sub-block, the transmitting end device performs mapping in the order of the frequency domain first and then the time domain.
  • the transmitting-end device firstly arranges the multiple sub-carriers corresponding to the fourth time unit according to the arrangement order of the multiple sub-carriers included in the first time-frequency resource sub-block Perform mapping, after the mapping corresponding to the fourth time unit is completed, for the next time unit (referred to as the fifth time unit) of the fourth time unit in the first time-frequency resource sub-block, the transmitting end device also follows the first time unit.
  • the arrangement order of the multiple subcarriers included in the frequency resource subblock is mapped on the multiple subcarriers corresponding to the fifth time unit, and so on.
  • the transmitting-end device follows RG_1 1 , 1 , RG_1 1,2 , ,...,RG_1 1,6 are mapped in the order, M is the number of subcarriers included in the first time-frequency resource sub-block, and then, for the time-frequency resource sub-block 1 Time unit 2 (ie, the fifth time unit), the transmitting end device performs mapping in the order of RG_1 2,1 , RG_1 2,2 , ,..., RG_1 2,6 , and so on, until the time-frequency resource sub-block 1
  • the included effective subcarriers are all mapped with modulation symbols.
  • time-frequency resource sub-block a and the first time-frequency resource sub-block include the same subcarrier in the multiple time-frequency resource sub-blocks
  • the sub-block includes the same time unit
  • the transmitting end device preferentially performs mapping in the time-frequency resource sub-block b that includes the same time unit as the first time-frequency resource sub-block according to the same mapping order as the first time-frequency resource sub-block
  • the time-frequency resource sub-block a including the same sub-carriers as the first time-frequency resource is mapped according to the same mapping order as the first time-frequency resource sub-block.
  • time-frequency resource sub-block 2 and time-frequency resource sub-block 1 include the same time unit
  • the frequency resource sub-block 3 and the time-frequency resource sub-block 1 include the same subcarriers
  • the time-frequency resource sub-block 4 and the time-frequency resource sub-block 3 include the same time unit.
  • the sequence of the time-frequency resource sub-blocks mapped by the transmitting end device is: time-frequency resource sub-block 1 ⁇ time-frequency resource sub-block 2 ⁇ time-frequency resource sub-block 3 ⁇ time-frequency resource sub-block 4, each time-frequency resource sub-block Mapping is performed in the order of frequency domain first and then time domain.
  • the transmitting end device performs mapping in the time-frequency resource sub-blocks including the same time unit as the first time-frequency resource sub-blocks according to the same mapping sequence as the first time-frequency resource sub-blocks.
  • the second subcarrier and the third subcarrier in the multiple subcarriers included in the first time-frequency resource subblock if the second subcarrier and the fourth time corresponding to the fourth time unit are The third subcarriers corresponding to the unit are all valid subcarriers.
  • the fourth The third modulation symbol mapped on the second subcarrier corresponding to the time unit is adjacent to the fourth modulation symbol mapped on the third subcarrier corresponding to the fourth time unit.
  • the transmitting end device uses the following two methods when mapping To process:
  • Manner 1 The transmitting end device maps the first modulation symbol to be mapped to the third subcarrier corresponding to the fourth time unit.
  • the transmitting end device will The mapped first modulation symbol is mapped to the R+1th subcarrier after the second subcarrier corresponding to the fourth time unit, where R is the fourth subcarrier at the interval between the second subcarrier and the third subcarrier.
  • the number, that is, the R+1th subcarrier after the second subcarrier is the third subcarrier.
  • the third modulation symbol mapped on the second subcarrier corresponding to the fourth time unit and the fourth modulation symbol mapped on the third subcarrier corresponding to the fourth time unit are The second modulation symbol sequence is adjacent.
  • Manner 2 The transmitting end device maps the R+1 th modulation symbol to be mapped to the third subcarrier corresponding to the fourth time unit.
  • the transmitting end device will The mapped R+1th modulation symbol is mapped to the R+1th subcarrier after the corresponding second subcarrier of the fourth time unit, that is, the R+1th subcarrier after the second subcarrier is the third subcarrier. subcarrier.
  • the first modulation symbol to be mapped to the R th modulation symbol to be mapped is not mapped to the time-frequency resource, or, in other words, the first modulation symbol to be mapped to the R th modulation symbol to be mapped uses 0 is replaced, or in other words, the first modulation symbol to be mapped to the R-th modulation symbol to be mapped are respectively mapped to the first sub-carrier after the second sub-carrier corresponding to the fourth time unit to the R-th sub-carrier, Then it is covered by the reference signal and/or the transmission signal on the non-shared channel, that is, the transmitting end device rewrites or rewrites or rewrites the first subcarrier to the Rth subcarrier after the second subcarrier corresponding to the fourth time unit map. It is equivalent to discarding the first modulation symbol to be mapped to the R th modulation symbol to be mapped by the transmitting end device.
  • the transmitting end uses the second method for processing, in the second modulation symbol sequence, the third modulation symbol mapped on the second subcarrier corresponding to the fourth time unit and the third subcarrier corresponding to the fourth time unit R modulation symbols are spaced between the above-mapped fourth modulation symbols.
  • the transmitting end device may use a method similar to that of the first mode or the second mode to process.
  • the last modulation symbol mapped on the first time-frequency resource sub-block and the first modulation symbol mapped on the second time-frequency resource sub-block are adjacent in the second modulation symbol sequence, or, in the second modulation symbol sequence In the symbol sequence, one or more modulation symbols are spaced between the last modulation symbol mapped on the first time-frequency resource sub-block and the first modulation symbol mapped on the second time-frequency resource sub-block.
  • the last subcarrier corresponding to the last time unit included in the first time-frequency resource subblock is a valid subcarrier
  • the first subcarrier corresponding to the first time unit included in the second time-frequency resource subblock is a valid subcarrier.
  • the carrier is a valid subcarrier
  • the last modulation symbol mapped on the first time-frequency resource subblock and the first modulation symbol mapped on the second time-frequency resource subblock are adjacent in the second modulation symbol sequence.
  • the transmitting end device may also use a method similar to that of the first mode or the second mode to perform processing.
  • the transmitting end device transmits the second modulation symbol sequence mapped on the time-frequency resource block.
  • the receiving end device receives the modulation symbol mapped on the time-frequency resource block.
  • the receiving end device before step S2903, the receiving end device further determines the position of the time-frequency resource block, so as to determine the time-frequency resource for receiving the modulation symbol.
  • the receiving end device demaps the modulation symbols mapped on the time-frequency resource block to obtain a second modulation symbol sequence.
  • the receiving end device may perform demapping according to the demapping order corresponding to the mapping order of the transmitting end device.
  • processing such as demodulation and decoding can be continued, which is not specifically limited in this application.
  • the receiving end device uses the time-frequency resource sub-block as a unit when performing time-frequency resource mapping.
  • Mapping on frequency resource sub-blocks that is, taking time-frequency resource sub-blocks as a unit, mapping between time-frequency resource sub-blocks in the order of time domain first and frequency domain, so that the modulation symbols of the same code block may be mapped to multiple times.
  • the equivalent SNR or SIR of the residual phase noise on different code blocks is averaged, and the diversity of the equivalent channel experienced by the code blocks in the time domain is improved.
  • corresponding demapping is performed, thereby improving the spectral efficiency.
  • the actions of the transmitting-end device or the receiving-end device may be called by the processor 301 in the communication device 300 shown in FIG. 7 to be stored in the memory 303
  • the application code is executed by instructing the sending end device or the receiving end device.
  • the methods and/or steps implemented by the transmitting-end device can also be implemented by components (such as chips or circuits) that can be used in the transmitting-end device, and the methods and/or steps implemented by the receiving-end device can also be implemented. Or steps, can also be implemented by components (such as chips or circuits) that can be used in the receiving end device.
  • the solution provided by the present application has been introduced above mainly from the perspective of interaction between various devices.
  • the present application also provides a communication device, which is used to implement the above-mentioned various methods.
  • the communication device may be the transmitting end device in the foregoing method embodiments, or a device including the foregoing transmitting end device, or a component that can be used for the transmitting end device; or, the communication device may be the receiving end device in the foregoing method embodiments , or a device including the above-mentioned receiving-end device, or a component that can be used for the receiving-end device.
  • the communication apparatus includes corresponding hardware structures and/or software modules for executing each function.
  • the communication device may be divided into functional modules according to the foregoing method embodiments.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 31 shows a schematic structural diagram of a transmitter device 310 .
  • the transmitting end device 310 includes a determining module 3101 and an interleaving module 3102 .
  • the determining module 3101 and the interleaving module 3102 may be collectively referred to as processing modules.
  • the sender device 310 may further include a transceiver module 3103 and a storage module 3104 (not shown in FIG. 31 ).
  • the transceiver module 3103 may include a receiving module and a sending module, respectively configured to perform the steps of receiving and sending performed by the sending end device in the above method embodiments;
  • the storage module 3104 is configured to store data and/or instructions.
  • the transceiver module 3103 which may also be called a transceiver unit, is used to implement sending and/or receiving functions, and it may be a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • a determination module 3101 configured to determine a first interleaving group, the first interleaving group includes N1 data blocks, the data blocks include at least two data units, the N1 data blocks correspond to multiple code blocks, and N1 is a positive integer greater than 1; interleaving; Module 3102, configured to interleave the first interleaving group to obtain an interleaved data unit sequence, where the data unit sequence includes a plurality of sub-data unit sequences, and the sub-data unit sequence includes M1 data units of each data block in the K1 data blocks , K1 is a positive integer less than or equal to N1, and M1 is a positive integer.
  • the determining module 3101 configured to determine the first interleaving group, includes: a determining module, configured to divide the N CB data blocks into P1 interleaving groups, where the first interleaving group is one of the P1 interleaving groups, N CB is the total number of data blocks transmitted in one transmission unit, the transmission unit includes at least two time units, and the P1 interleaving groups satisfy one or more of the following:
  • the number of data blocks included in different interleaving groups in the P1 interleaving groups is the same;
  • the number of data blocks included in a part of the interleaving groups in the P1 interleaving groups is the first numerical value, and the number of data blocks included in the other part of the interleaving groups is the second numerical value;
  • the number of data blocks included in different interleaving groups in the P1 interleaving groups is different;
  • the number of data blocks included in different interleaving groups in the P1 interleaving groups is different, and increases or decreases;
  • the difference between the maximum value and the minimum value is less than or equal to the first threshold.
  • the determining module 3101 is configured to determine a second interleaving group, where the second interleaving group includes N2 first time units, the frequency domain corresponding to the first time unit includes at least two frequency domain resource units, and the frequency domain resource units are mapped with modulation symbol, N2 is a positive integer greater than 1; the interleaving module is used to interleave the second interleaving group to obtain N2 second time units, and the frequency domain resource unit corresponding to each second time unit in the N2 second time units K2 sub-modulation symbol sequences are carried, and the sub-modulation symbol sequences include data modulation symbols on M2 frequency-domain resource units corresponding to at least two first time units in the N2 first time units, and K2 and M2 are positive integers.
  • the determining module 3101 configured to determine the second interleaving group, includes: a determining module 3101, configured to divide the Nsym time units into P2 interleaving groups, where the second interleaving group is one of the P2 interleaving groups , Nsym is the total number of time units included in a transmission unit, and the P2 interleaving groups satisfy one or more of the following:
  • the number of time units included in different interleaving groups in the P2 interleaving groups is the same;
  • the number of time units included in a part of the interleaving groups in the P2 interleaving groups is a first numerical value, and the number of time units included in another part of the interleaving groups is a second numerical value;
  • the number of time units included in different interleaving groups in the P2 interleaving groups is different;
  • the number of time units included in different interleaving groups in the P2 interleaving groups is different, and increases or decreases;
  • the difference between the maximum value and the minimum value is less than or equal to the fourth threshold.
  • the transmitting end device 310 is presented in the form of dividing each functional module in an integrated manner.
  • Module herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above.
  • the sending end device 310 may take the form of the communication device 300 shown in FIG. 7 .
  • the processor 301 in the communication device 300 shown in FIG. 7 can make the communication device 300 execute the interleaving method in the above method embodiments by calling the computer execution instructions stored in the memory 303 .
  • the function/implementation process of the determination module 3101 and the interleaving module 3102 in FIG. 31 can be implemented by the processor 301 in the communication device 300 shown in FIG. 7 calling the computer execution instructions stored in the memory 303 .
  • the transmitting end apparatus 310 provided in this embodiment can perform the above-mentioned interleaving method, the technical effect that can be obtained can be referred to the above-mentioned method embodiments, and details are not repeated here.
  • FIG. 32 shows a schematic structural diagram of a receiving end device 320 .
  • the receiving end device 320 includes an acquisition module 3201 and a deinterleaving module 3202 .
  • the obtaining module 3201 and the deinterleaving module 3202 may be collectively referred to as processing modules.
  • the receiving end device 320 may further include a transceiver module 3203 and a storage module 3204 (not shown in FIG. 32 ).
  • the transceiver module 3203 may include a receiving module and a sending module, respectively configured to perform the receiving and sending steps performed by the receiving end device in the above method embodiments;
  • the storage module 3204 is configured to store data and/or instructions.
  • the transceiver module 3203 may also be referred to as a transceiver unit to implement sending and/or receiving functions, for example, it may be a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the obtaining module 3201 is used to obtain the interleaved data unit sequence, the data unit sequence includes L sub-data unit sequences, the data units in the data unit sequence correspond to multiple code blocks, and L is a positive integer greater than 1; the deinterleaving module 3202, It is used to deinterleave the data unit sequence to obtain N1 data blocks, the data block includes M1 data units of each sub-data unit sequence in the H1 sub-data unit sequence, N1 is a positive integer greater than 1, and H1 is less than or equal to L is a positive integer, and M1 is a positive integer.
  • the de-interleaving module 3202 configured to de-interleave the sequence of data units, includes: a de-interleaving module 3202, configured to de-interleave the sequence of data units according to one or more of the following: each of the N1 data blocks The length of each data block, the length of each sub-data unit sequence in the L sub-data unit sequences, or the arrangement order of the data unit blocks in each sub-data unit sequence, the data unit block includes M1 data units.
  • the obtaining module 3201 is configured to obtain N2 second time units, where K2 sub-modulation symbol sequences are carried on the frequency domain resource unit corresponding to each second time unit in the N2 second time units, and N2 is a positive integer greater than 1;
  • the interleaving module 3202 is configured to de-interleave the N2 second time units to obtain N2 first time units, the frequency domain resource unit corresponding to the first time unit carries a modulation symbol sequence, and the modulation symbol sequence includes at least two second time units.
  • the data modulation symbols on at least M2 frequency domain resource units corresponding to the time units respectively, the data modulation symbols on at least M2 frequency domain resource units belong to the sub-modulation symbol sequence, and K2 and M2 are positive integers.
  • the receiving end device 320 is presented in the form of dividing each functional module in an integrated manner.
  • Module herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above.
  • the receiving end device 320 may take the form of the communication device 300 shown in FIG. 7 .
  • the processor 301 in the communication device 300 shown in FIG. 7 can make the communication device 300 execute the deinterleaving method in the above method embodiments by invoking the computer execution instructions stored in the memory 303 .
  • the function/implementation process of the acquisition module 3201 and the deinterleaving module 3202 in FIG. 32 can be implemented by the processor 301 in the communication device 300 shown in FIG. 7 calling the computer execution instructions stored in the memory 303 .
  • the receiving end device 320 provided in this embodiment can perform the above-mentioned deinterleaving method, reference can be made to the above-mentioned method embodiments for the technical effect that can be obtained, and details are not repeated here.
  • FIG. 33 shows a schematic structural diagram of another transmitter device 330 .
  • the sender device 330 includes a determination module 3301 and a mapping module 3302 .
  • the determining module 3301 and the mapping module 3302 may be collectively referred to as a processing module.
  • a transceiver module 3303 and a storage module 3304 may also be included.
  • the transceiver module 3303 may include a receiving module and a sending module, respectively configured to perform the receiving and sending steps performed by the sending end device in the above method embodiments;
  • the storage module 3304 is configured to store data and/or instructions.
  • the transceiver module 3303 which may also be called a transceiver unit, is used to implement sending and/or receiving functions, and it may be a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the determining module 3301 is used to determine a first modulation symbol sequence, the first modulation symbol sequence includes modulation symbols of at least one code block; the mapping module 3302 is used to map the first modulation symbol sequence to multiple subcarriers corresponding to N3 time units , wherein the first modulation symbol mapped on the first subcarrier corresponding to the first time unit and the second modulation symbol mapped on the first subcarrier corresponding to the second time unit are adjacent or spaced apart in the first modulation symbol sequence by at least For one modulation symbol, the first time unit and the second time unit are two time units in N3 time units, and N3 is a positive integer greater than 1.
  • the determining module 3301 is configured to determine a second modulation symbol sequence, the second modulation symbol sequence includes modulation symbols of at least one code block;
  • the mapping module 3302 is configured to map the second modulation symbol sequence to a time-frequency resource block, the time-frequency resource block It includes a plurality of time-frequency resource sub-blocks, the time-frequency resource sub-block includes a plurality of time units in the time domain, and includes a plurality of subcarriers in the frequency domain, and the second time unit corresponding to the fourth time unit in the first time-frequency resource sub-block
  • the third modulation symbol mapped on the subcarrier and the fourth modulation symbol mapped on the third subcarrier corresponding to the fourth time unit are adjacent to or separated by at least one modulation symbol in the second modulation symbol sequence, and the first time-frequency resource subblock
  • the last modulation symbol mapped on the second time-frequency resource sub-block and the first modulation symbol mapped on the second time-frequency resource sub-block are adjacent to or separated by at least one modulation
  • the transmitting end device 330 is presented in the form of dividing each functional module in an integrated manner.
  • Module herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above.
  • the sending end device 330 may take the form of the communication device 300 shown in FIG. 7 .
  • the processor 301 in the communication device 300 shown in FIG. 7 can make the communication device 300 execute the mapping method in the above method embodiment by invoking the computer execution instructions stored in the memory 303 .
  • the function/implementation process of the determination module 3301 and the mapping module 3302 in FIG. 33 can be implemented by the processor 301 in the communication device 300 shown in FIG. 7 calling the computer execution instructions stored in the memory 303 .
  • the transmitting end device 330 provided in this embodiment can execute the above-mentioned mapping method, reference can be made to the above-mentioned method embodiments for the technical effects that can be obtained, and details are not repeated here.
  • FIG. 34 shows a schematic structural diagram of a receiving end device 340 .
  • the receiving end device 340 includes a transceiver module 3401 and a demapping module 3402 .
  • the mapping module 3402 may also be referred to as a processing module.
  • a storage module 3404 may also be included.
  • the transceiver module 3401 may include a receiving module and a sending module, respectively configured to perform the receiving and sending steps performed by the receiving end device in the above method embodiments; the storage module 3404 is configured to store data and/or instructions.
  • the transceiver module 3404 may also be referred to as a transceiver unit to implement sending and/or receiving functions, for example, it may be a transceiver circuit, a transceiver, a transceiver or a communication interface.
  • the transceiver module 3401 is configured to receive modulation symbols mapped on multiple subcarriers corresponding to N3 time units, where N3 is a positive integer greater than 1.
  • the demapping module 3402 is configured to perform demapping on the modulation symbols mapped on the multiple subcarriers corresponding to the N3 time units to obtain a first modulation symbol sequence, wherein the first modulation symbol sequence mapped on the first subcarrier corresponding to the first time unit is The modulation symbol and the second modulation symbol mapped on the first subcarrier corresponding to the second time unit are adjacent or separated by at least one modulation symbol in the first modulation symbol sequence, and the first time unit and the second time unit are N3 time units two time units in .
  • the transceiver module 3401 is configured to receive modulation symbols mapped on a time-frequency resource block, the time-frequency resource block includes a plurality of time-frequency resource sub-blocks, and the time-frequency resource sub-block includes a plurality of time units in the time domain, and includes in the frequency domain a plurality of subcarriers;
  • the demapping module 3402 is configured to perform demapping on the modulation symbols mapped on the time-frequency resource block to obtain a second modulation symbol sequence, the second subcarrier corresponding to the fourth time unit in the first time-frequency resource subblock
  • the third modulation symbol mapped on the carrier and the fourth modulation symbol mapped on the fourth subcarrier corresponding to the fourth time unit are adjacent to or separated by at least one modulation symbol in the second modulation symbol sequence, and the first time-frequency resource subblock
  • the mapped third modulation symbol and the fourth modulation symbol mapped on the second time-frequency resource sub-block are adjacent to or separated by one modulation symbol in the second modulation symbol sequence, and
  • the receiving end device 340 is presented in the form of dividing each functional module in an integrated manner.
  • Module herein may refer to a specific ASIC, circuit, processor and memory executing one or more software or firmware programs, integrated logic circuit, and/or other device that may provide the functions described above.
  • the receiving device 340 may take the form of the communication device 300 shown in FIG. 7 .
  • the processor 301 in the communication device 300 shown in FIG. 7 may call the computer execution instructions stored in the memory 303 to cause the communication device 300 to execute the demapping method in the above method embodiment.
  • the functions/implementation process of the transceiver module 3401 and the demapping module 3402 in FIG. 34 can be implemented by the processor 301 in the communication device 300 shown in FIG. 7 calling the computer execution instructions stored in the memory 303 .
  • the function/implementation process of the demapping module 3402 in FIG. 34 can be implemented by the processor 301 in the communication device 300 shown in FIG. 7 calling the computer execution instructions stored in the memory 303.
  • the function/implementation process can be realized through the communication interface 302 in the communication device 300 shown in FIG. 7 .
  • the receiving end device 340 provided in this embodiment can perform the above-mentioned demapping method, reference can be made to the above-mentioned method embodiments for the technical effects that can be obtained, and details are not repeated here.
  • An embodiment of the present application further provides a communication apparatus, where the communication apparatus includes a processor for implementing the method in any of the foregoing method embodiments.
  • the communication device further includes a memory.
  • the memory is used to store necessary program instructions and data, and the processor can call the program code stored in the memory to instruct the communication apparatus to execute the method in any of the above method embodiments.
  • the memory may also not be in the communication device.
  • the communication device further includes an interface circuit, which is a code/data read/write interface circuit, and the interface circuit is used to receive computer-executed instructions (the computer-executed instructions are stored in the memory, and may be directly from memory read, or possibly through other devices) and transferred to the processor.
  • an interface circuit which is a code/data read/write interface circuit, and the interface circuit is used to receive computer-executed instructions (the computer-executed instructions are stored in the memory, and may be directly from memory read, or possibly through other devices) and transferred to the processor.
  • the communication device may be a chip (for example, a baseband chip) or a chip system.
  • the communication device When the communication device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices, which is not made in this embodiment of the present application. Specific restrictions.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it can 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. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • the computer may include the aforementioned device.
  • some optional or exemplary features in the embodiments of the present application can be independently implemented without relying on other features, such as the solution they are currently based on, to solve corresponding technical problems. To achieve the corresponding effect, it can also be combined with other features according to the requirements in some scenarios.
  • the apparatuses provided in the embodiments of the present application may also implement these features or functions correspondingly, which will not be repeated here.

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Abstract

本申请实施例提供一种交织、解交织方法及装置，能够提高频谱效率。该方法中，发送端装置确定第一交织组，并对第一交织组进行交织，得到交织后的数据单元序列。其中，第一交织组包括N1个数据块，数据块包括至少两个数据单元，N1个数据块对应多个码块，数据单元序列包括多个子数据单元序列，子数据单元序列包括K1个数据块中每个数据块的M1个数据单元，N1为大于1的正整数，K1为小于或等于N1的正整数，M1为正整数。在接收端，接收端装置获取交织后的数据单元序列，并进行相应解交织，得到N1个数据块。

Description

交织、解交织方法及装置 技术领域
本申请涉及通信领域，尤其涉及交织、解交织方法及装置。
背景技术
在日益增长的通信需求下，高频因其丰富的频谱资源而成为业界的研究热点，其具有带宽大，能够实现高吞吐量的显著特点。然而，高频恶劣的相位噪声(phase noise，PHN)会在正交频分复用(orthogonal frequency division multiplexing，OFDM)符号的频域维度上引入的公共相位误差(common phase error，CPE)和子载波间干扰(inter sub-carrier interference，ICI)，严重影响数据的解调性能。
针对高频不可忽略的相位噪声，现有协议支持使用离散的相位噪声参考信号(phase-tracking reference signal，PTRS)估计CPE和/或ICI，并根据估计值进行补偿。由于噪声以及PTRS数量等的影响，在补偿后会残留一部分CPE和/或ICI，该残留的CPE和ICI统称为残余相噪。不同OFDM符号间残余相噪的功率P res变化范围较大，若将残余相噪理解为噪声或干扰，则不同OFDM符号间残余相噪对应的等效信噪比(signal-to-noise ratio，SNR)或信号与干扰比(signal to interference ratio，SIR)的变化范围较大，即残余相噪在OFDM符号上的等效SNR或SIR差别较大。
在不同OFDM符号间残余相噪的等效SNR或SIR的变化范围较大，一个OFDM符号上传输一个或多个码块时，若某个OFDM符号上残余相噪的功率较高，即等效SNR或SIR较低，该符号上的码块可能译码出错，此时，即使其他OFDM符号上残余相噪的等效SNR或SIR较高，整个时隙的传输块(transport block，TB)仍按错传处理，即需要重传整个TB，降低传输速率，导致频谱效率下降。
发明内容
本申请提供一种交织、解交织方法及装置，能够提升频谱效率。
为达到上述目的，本申请采用如下技术方案：
第一方面，提供了一种交织方法，该方法可以由发送端装置执行，也可以由发送端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：确定第一交织组，该第一交织组包括N1个数据块，该数据块包括至少两个数据单元，该N1个数据块对应多个码块，N1为大于1的正整数。对第一交织组进行交织，得到交织后的数据单元序列，该数据单元序列包括多个子数据单元序列，该子数据单元序列包括K1个数据块中每个数据块的M1个数据单元，K1为小于或等于N1的正整数，M1为正整数。
基于该方案，交织组中的数据块对应多个码块，在一次交织后得到的子数据单元序列中，能够包括多个码块的数据单元，从而后续在对交织后的数据单元序列进行资源映射时，同一个码块的多个数据单元可能被映射至多个符号上传输，平均不同码块上残余相噪的等效SNR/SIR，降低重传率，进而提升频谱效率。
在一些可能的设计中，数据块为码块或比特块，该数据单元为比特；或者，该数据块为码块或调制符号块，该数据单元为调制符号。基于该可能的设计，在数据单元为比特时，该交织方法可以在调制之前执行，数据单元为调制符号时，该交织方法可以在调制之后执行，能够使得该交织方法灵活应用。
在一些可能的设计中，该K1个数据块中每个数据块的M1个数据单元按照第一顺序排列，至少两个子数据单元对应的该第一顺序不同。基于该可能的设计，至少两个子数据单元对应的第一顺序不同，能够提高交织的灵活性。
在一些可能的设计中，该多个子数据单元中的每个子数据单元对应的该第一顺序相同、该第一顺序为该K1个数据块的排列顺序、且该N1个数据块的长度C相等时，该交织后的数据单元序列满足如下公式：
Figure PCTCN2020141872-appb-000001
其中，b为交织前该N1个数据块的数据单元序列，floor表示向下取整，mod表示取模运算，i＝0,1,...,N1×C-1。
在一些可能的设计中，确定第一交织组，包括：将N CB个数据块划分为P1个交织组，该第一交织组为该P1个交织组中的一个，N CB为一个传输单元内传输的数据块的总数，该传输单元包括至少两个时间单元，该P1个交织组满足以下一项或多项：
该P1个交织组中不同交织组所包括的数据块的个数相同；
该P1个交织组中一部分交织组所包括的数据块的个数为第一数值，另一部分交织组所包括的数据块的个数为第二数值；
该P1个交织组中不同交织组所包括的数据块的个数不同；
该P1个交织组中不同交织组所包括的数据块的个数不同，且递增或递减；
该P1个交织组中各个交织组包括的数据块个数中，最大值与最小值之差小于或等于第一阈值。基于该可能的设计，能够提高交织组划分的灵活性和多样性。
在一些可能的设计中，N1是根据以下一项或多项确定的：调度带宽、调制编码方式MCS、残余相噪、子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、相位追踪参考信号PTRS的数量、一个时间单元上传输的数据块的数量Q。基于该可能的设计，能够根据实际场景配置合理且较优的交织深度，降低交织和解交织的复杂度。
在一些可能的设计中，N1是根据该调度带宽确定的，且该N1与该调度带宽正相关；或者，该N1是根据该MCS确定的，且N1与该MCS正相关；或者，N1是根据该残余相噪确定的，且N1与该残余相噪等效的信噪比SNR负相关。
在一些可能的设计中，N1是根据一个时间单元上传输的数据块的数量Q确定的；Q大于或等于第二阈值时，N1满足：N1＝S×int(Q)，S为大于或等于2的正整数，int(Q)表示对Q取整；Q小于该第二阈值，且大于或等于第三阈值时，该N1为第三数值，该第三数值大于或等于2。
在一些可能的设计中，N1个数据块不连续。
在一些可能的设计中，数据块包括的数据单元的个数为该M1的Z倍，Z为大于1的正整数。基于该可能的设计，能够保证每个数据块包括的数据单元在交织后至少位于2个子数据单元序列中，从而使得该数据块最终被映射至多个时间单元传输，提高整体译码性能。
第二方面，提供了一种解交织方法，该方法可以由接收端装置执行，也可以由接收端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：获取交织后的数据单元序列，该数据单元序列包括L个子数据单元序列，该数据单元序列中的数据单元对应多个码块，L为大于1的正整数；对该数据单元序列进行解交织，得到N1个数据块，该数据块包括H1个子数据单元序列中每个子数据单元序列的M1个数据单元，N1为大于1的正整数，H1为小于或等于L的正整数，M1为正整数。
基于该方案，解交织得到的数据块包括H1个子数据单元序列中每个子数据单元序列的M1个数据单元，也就是说，一个数据块包括的数据单元在发送端位于多个子数据单元序列中，或者说子数据单元序列中包括多个数据块的数据单元，从而后续在对交织后的数据单元序列进行资源映射时，同一个数据块的多个数据单元可能被映射至多个符号上传输，从而平均不同码块上残余相噪的等效SNR/SIR，降低重传率，提高频谱效率。
在一些可能的设计中，数据块为码块或比特块，该数据单元为比特；或者，该数据块为码块或调制符号块，该数据单元为调制符号。基于该可能的设计，在数据单元为比特时，该交织方法可以在调制之前执行，数据单元为调制符号时，该交织方法可以在调制之后执行，能够使得该交织方法灵活应用。
在一些可能的设计中，对数据单元序列进行解交织，包括：根据以下一项或多项对该数据单元序列进行解交织：该N1个数据块中每个数据块的长度、该L个子数据单元序列中每个子数据单元序列的长度、或者该每个子数据单元序列中数据单元块的排列顺序，该数据单元块包括M1个数据单元。
在一些可能的设计中，N1个数据块不连续。
第三方面，提供了一种交织方法，该方法可以由发送端装置执行，也可以由发送端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：确定第二交织组，该第二交织组包括N2个第一时间单元，该第一时间单元对应的频域上包括至少两个频域资源单元，该频域资源单元上映射有调制符号，N2为大于1的正整数；对该第二交织组进行交织，得到N2个第二时间单元，该N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，该子调制符号序列包括该N2个第一时间单元中至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号，K2、M2为正整数。
基于该方案，通过交织将同一时间单元对应的频域资源单元上传输的调制符号，调整为在多个时间单元对应的频域资源单元上传输，从而实现一个码块在多个时间单元上传输，平均不同码块上残余相噪的等效SNR/SIR，降低重传率，提高频谱效率。
在一些可能的设计中，该至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号按照第二顺序排列，至少两个该子调制符号序列对应的该第二顺序不同。基于该可能的设计，至少两个子调制符号序列对应的第二顺序不同，能够提高交织的灵活性。
在一些可能的设计中，确定第二交织组，包括：将N sym个时间单元划分为P2个交织组，该第二交织组为该P2个交织组中的一个，N sym为一个传输单元内包括的时间单元的总数，该P2个交织组满足以下一项或多项：
该P2个交织组中不同交织组所包括的时间单元的个数相同；
该P2个交织组中一部分交织组所包括的时间单元的个数为第一数值，另一部分交织组所包括的时间单元的个数为第二数值；
该P2个交织组中不同交织组所包括的时间单元的个数不同；
该P2个交织组中不同交织组所包括的时间单元的个数不同，且递增或递减；
该P2个交织组中各个交织组包括的时间单元的个数中，最大值与最小值之差小于或等于第四阈值。基于该可能的设计，能够提高交织组划分的灵活性和多样性。
在一些可能的设计中，M2是根据一个时间单元上传输的码块数Q2确定的。基于该可能的设计，能够根据时间单元上传输的码块数配置合理的M2，降低交织和解交织的复杂度。
在一些可能的设计中，Q2大于或等于第五阈值时，该M2满足以下公式：
Figure PCTCN2020141872-appb-000002
该Q2小于或等于第六阈值时，该M2满足如下公式：
Figure PCTCN2020141872-appb-000003
其中，N RB为资源块RB总数，T为每个RB包括的资源元素RE的个数，int(Q2)表示对Q2取整，f(A,B)表示A和B的最小公倍数，S为大于或等于2的正整数。
在一些可能的设计中，第一时间单元对应的频域上包括的至少两个频域资源单元不连续。
在一些可能的设计中，N2个第一时间单元不连续。
在一些可能的设计中，N2个第一时间单元对应的第一时频资源与N2个第二时间单元对应的第一时频资源相同，该第一时频资源用于映射参考信号和/或非共享信道，或者，该第一时频资源为预留资源。
第四方面，提供了一种解交织方法，该方法可以由接收端装置执行，也可以由接收端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：获取N2个第二时间单元，该N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，N2为大于1的正整数；对该N2个第二时间单元进行解交织，得到N2个第一时间单元，该第一时间单元对应的频域资源单元上承载调制符号序列，该调制符号序列包括至少两个该第二时间单元分别对应的至少M2个频域资源单元上的数据调制符号，该至少M2个频域资源单元上的数据调制符号属于该子调制符号序列，K2、M2为正整数。
基于该方案，解交织得到的N2个第一时间单元对应的频域资源单元上承载调制符号序列，该调制符号序列包括至少两个第二时间单元分别对应的至少M2个频域资源单元上的数据调制符号，也就是说，在发送端通过交织将同一时间单元对应的频域资源单元上传输的调制符号，调整为在多个时间单元对应的频域资源单元上传输，从而实现一个码块在多个时间单元上传输，平均不同码块上残余相噪的等效SNR/SIR，降低重传率，提高频谱效率。
在一些可能的设计中，第一时间单元对应的至少两个频域资源单元不连续。
在一些可能的设计中，N2个第一时间单元不连续。
在一些可能的设计中，N2个第一时间单元对应的第一时频资源与该N2个第二时间单元对应的第一时频资源相同，该第一时频资源用于映射参考信号和/或非共享信道，或者，该第一时频资源为预留资源。
第五方面，提供一种映射方法，该方法可以由发送端装置执行，也可以由发送端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：确定第一调制符号序列，第一调制符号序列包括至少一个码块的调制符号；将第一调制符号序列映射至N3个时间单元对应的多个子载波，其中，第一时间单元对应的第一子载波上映射的第一调制符号与第二时间单元对应的第一子载波上映射的第二调制符号在第一调制符号序列中相邻或间隔至少一个调制符号，第一时间单元与第二时间单元为N3个时间单元中的两个时间单元，N3为大于1的正整数。
基于该方案，发送端装置在进行时频资源映射时按照先时域后频域的顺序进行映射，从而将同一码块的调制符号映射至多个时间单元上传输，平均不同码块上残余相噪的等效SNR或SIR，降低重传率，提高频谱效率。
第六方面，提供一种解映射方法，该方法可以由接收端装置执行，也可以由接收端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：接收N3个时间单元对应的 多个子载波上映射的调制符号；对N3个时间单元对应的多个子载波上映射的调制符号进行解映射，得到第一调制符号序列，其中，第一时间单元对应的第一子载波上映射的第一调制符号与第二时间单元对应的第一子载波上映射的第二调制符号在第一调制符号序列中相邻或间隔至少一个调制符号，第一时间单元与第二时间单元为N3个时间单元中的两个时间单元，N3为大于1的正整数。其中，第六方面所带来的技术效果可参考第五方面所带来的技术效果，在此不再赘述。
结合第五方面或第六方面，在一些可能的设计中，第一时间单元与第二时间单元相邻，第一时间单元对应的第一子载波上映射的第一调制符号与第二时间单元对应的第一子载波上映射的第二调制符号在第一调制符号序列中相邻。
结合第五方面或第六方面，在一些可能的设计中，第一时间单元与第二时间单元之间间隔至少一个第三时间单元，第三时间单元对应的第一子载波用于映射参考信号和/或非共享信道，或者，第三时间单元对应的第一子载波为预留资源。
第七方面，提供一种映射方法，该方法可以由发送端装置执行，也可以由发送端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：确定第二调制符号序列，第二调制符号序列包括至少一个码块的调制符号；将第二调制符号序列映射至时频资源块，时频资源块包括多个时频资源子块，时频资源子块在时域上包括多个时间单元，在频域上包括多个子载波，第一时频资源子块中的第四时间单元对应的第二子载波上映射的第三调制符号与第四时间单元对应的第三子载波上映射的第四调制符号在第二调制符号序列中相邻或间隔至少一个调制符号，第一时频资源子块上映射的最后一个调制符号与第二时频资源子块上映射的第一个调制符号在第二调制符号序列中相邻或间隔至少一个调制符号，第二时频资源子块和第一时频资源子块包括相同的时间单元。
基于该方案，接收端装置在进行时频资源映射时以时频资源子块为单位，在某个时频资源子块映射完成后，对与在时频资源子块包括相同子载波的时频资源子块上进行映射，即以时频资源子块为单位，在时频资源子块间按照先时域后频域的顺序进行映射，从而可能将同一码块的调制符号映射至多个时间单元上传输，平均不同码块上残余相噪的等效SNR或SIR，提升码块经历的等效信道在时域上的多样性，降低重传率，提高频谱效率。
第八方面，提供一种解映射方法，该方法可以由接收端装置执行，也可以由接收端装置的部件，例如处理器、芯片、或芯片系统等执行。该方法包括：接收时频资源块上映射的调制符号，时频资源块包括多个时频资源子块，时频资源子块在时域上包括多个时间单元，在频域上包括多个子载波；对时频资源块上映射的调制符号进行解映射，得到第二调制符号序列，第一时频资源子块中的第四时间单元对应的第二子载波上映射的第三调制符号与第四时间单元对应的第四子载波上映射的第四调制符号在第二调制符号序列中相邻或间隔至少一个调制符号，第一时频资源子块上映射的第三调制符号与第二时频资源子块上映射的第四调制符号在第二调制符号序列中相邻或间隔一个调制符号，第二时频资源子块和第一时频资源子块包括相同的时间单元。其中，第八方面所带来的技术效果可参考第七方面所带来的技术效果，在此不再赘述。
结合第七方面或第八方面，在一些可能的设计中，第二子载波与第三子载波相邻。
结合第七方面或第八方面，在一些可能的设计中，第二子载波与第三子载波之间间隔至少一个第四子载波，第四时间单元对应的第四子载波用于映射参考信号和/或非共享信道，或者，第四时间单元对应的第四子载波为预留资源。
第九方面，提供了一种通信装置用于实现上述各种方法。该通信装置可以为上述第一方 面或第三方面或第五方面或第七方面中的发送端装置，或者包含上述发送端装置的装置，或者上述发送端装置中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第六方面或第八方面中的接收端装置，或者包含上述接收端装置的装置，或者上述接收端装置中包含的装置。所述通信装置包括实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
第十方面，提供了一种通信装置，包括：处理器和存储器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该通信装置执行上述任一方面所述的方法该通信装置可以为上述第一方面或第三方面或第五方面或第七方面中的发送端装置，或者包含上述发送端装置的装置，或者上述发送端装置中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第六方面或第八方面中的接收端装置，或者包含上述接收端装置的装置，或者上述接收端装置中包含的装置。
第十一方面，提供了一种通信装置，包括：接口电路和处理器，该接口电路为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器；处理器用于执行计算机执行指令以使该通信装置执行上述任一方面所述的方法。该通信装置可以为上述第一方面或第三方面或第五方面或第七方面中的发送端装置，或者包含上述发送端装置的装置，或者上述发送端装置中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第六方面或第八方面中的接收端装置，或者包含上述接收端装置的装置，或者上述接收端装置中包含的装置。
第十二方面，提供了一种通信装置，包括：至少一个处理器；该处理器用于执行存储器中存储的计算机程序或指令，以使该通信装置执行上述任一方面所述的方法。该存储器可以与处理器耦合，或者，也可以独立于该处理器。该通信装置可以为上述第一方面或第三方面或第五方面或第七方面中的发送端装置，或者包含上述发送端装置的装置，或者上述发送端装置中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第六方面或第八方面中的接收端装置，或者包含上述接收端装置的装置，或者上述接收端装置中包含的装置。
第十三方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在通信装置上运行时，使得通信装置可以执行上述任一方面所述的方法。该通信装置可以为上述第一方面或第三方面或第五方面或第七方面中的发送端装置，或者包含上述发送端装置的装置，或者上述发送端装置中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第六方面或第八方面中的接收端装置，或者包含上述接收端装置的装置，或者上述接收端装置中包含的装置。
第十四方面，提供了一种包含指令的计算机程序产品，当其在通信装置上运行时，使得通信装置可以执行上述任一方面所述的方法。该通信装置可以为上述第一方面或第三方面或第五方面或第七方面中的发送端装置，或者包含上述发送端装置的装置，或者上述发送端装置中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第六方面或第八方面中的接收端装置，或者包含上述接收端装置的装置，或者上述接收端装置中包含的装置。
第十五方面，提供了一种通信装置(例如，该通信装置可以是芯片或芯片系统)，该通信装置包括处理器，用于实现上述任一方面中所涉及的功能。在一种可能的设计中，该通信装 置还包括存储器，该存储器，用于保存必要的程序指令和数据。该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
其中，第九方面至第十五方面中任一种设计方式所带来的技术效果可参见上述第一方面至第八方面中不同设计方式所带来的技术效果，此处不再赘述。
第十六方面，提供一种通信系统，该通信系统包括上述第一方面所述发送端装置和第二方面所述接收端装置；或者，包括上述第三方面所述发送端装置和第四方面所述的接收端装置；或者，包括上述第五方面所述发送端装置和第六方面所述的接收端装置；或者，包括上述第七方面所述发送端装置和第八方面所述的接收端装置。
附图说明
图1a为LDPC编码的比特交织过程示意图；
图1b为polar编码的比特交织过程示意图；
图2为本申请提供的一种物理层数据处理的流程示意图；
图3a为本申请提供的一种相位噪声的功率谱密度对信号造成影响的示意图；
图3b为本申请提供的另一种相位噪声的功率谱密度对信号造成影响的示意图；
图4a为本申请提供的一种公共相位误差对星座点造成影响的示意图；
图4b为本申请提供的一种子载波间干扰对星座点造成影响的示意图；
图5a为本申请提供的一种残余相噪和白噪声的累积分布函数曲线；
图5b为本申请提供的一种OFDM符号上的残余相噪功率示意图；
图6为本申请提供的一种通信系统的结构示意图；
图7为本申请提供的一种通信设备的结构示意图；
图8为本申请提供的另一种通信系统的结构示意图；
图9为本申请提供的一种终端设备和网络设备的结构示意图；
图10为本申请提供的一种交织、解交织方法的流程示意图；
图11a为本申请提供的另一种物理层数据处理的流程示意图；
图11b为本申请提供的又一种物理层数据处理的流程示意图；
图12为本申请提供的一种第一交织组的交织过程示意图一；
图13为本申请提供的一种第一交织组的交织过程示意图二；
图14为本申请提供的一种第一交织组的交织过程示意图三；
图15为本申请提供的一种第一交织组的示意图；
图16为本申请提供的一种第一交织组的交织结果示意图；
图17为本申请提供的一种解交织的过程示意图；
图18为本申请提供的再一种物理层数据处理的流程示意图；
图19为本申请提供的另一种交织、解交织方法的流程示意图；
图20为本申请提供的一种第二交织组的交织过程示意图；
图21为本申请提供的一种第二交织组的交织结果示意图一；
图22为本申请提供的一种第二交织组的交织结果示意图二；
图23为本申请提供的一种第二交织组的交织结果示意图三；
图24为本申请提供的一种第二交织组的交织结果示意图四；
图25为本申请提供的一种映射、解映射方法的流程示意图；
图26为本申请提供的一种时频资源栅格的结构示意图；
图27为本申请提供的一种参考信号映射的示意图；
图28为本申请提供的另一种参考信号映射的示意图；
图29为本申请提供的另一种映射、解映射方法的流程示意图；
图30a为本申请提供的一种时频资源块的结构示意图；
图30b为本申请提供的另一种时频资源块的结构示意图；
图31为本申请提供的一种接收端装置的结构示意图；
图32为本申请提供的一种发送端装置的结构示意图；
图33为本申请提供的另一种接收端装置的结构示意图；
图34为本申请提供的另一种发送端装置的结构示意图。
具体实施方式
为了方便理解本申请实施例中的方案，首先给出相关技术的简要介绍或定义如下：
1、公共相位误差(common phase error，CPE)、子载波间干扰(inter sub-carrier interference，ICI)：
假设一个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号上的时域相位噪声为：
θ n,n＝0,...,N c-1；
其中，N c为快速傅里叶变换(Fast Fourier Transform，FFT)点数。
其频域响应为：
Figure PCTCN2020141872-appb-000004
则，该相位噪声在该OFDM符号的频域维度上引入的影响可表示为：
Figure PCTCN2020141872-appb-000005
由此可得：
Figure PCTCN2020141872-appb-000006
其中，S i是第i个子载波上的接收信号，s i是第i个子载波上的发送信号，E 0为相位噪声引入的CPE，其导致的子载波上原始信号发生旋转或缩放，由于
Figure PCTCN2020141872-appb-000007
即E 0的值与子载波无关，因此，所有子载波上原始信号受到的旋转或缩放相同，从而称之为CPE。
Figure PCTCN2020141872-appb-000008
为相位噪声引入的子载波间干扰。
2、turbo编码、低密度奇偶校验(low density parity check，LDPC)编码、Polar编码：
turbo编码过程包含比特交织过程，通过码块内的比特交织提高译码性能，在turbo编码中：
假设交织前码块的比特序列为C i,i＝0,...,K-1，交织后的比特序列为L j,j＝0,...,K-1，则有：
L j＝C f(j),f(j)＝(f 1×j+f 2×j 2)mod K；
其中，K为码块大小，或者说，码块包括的比特数量，f 1、f 2为与K相关的参数，示例 性的，f 1、f 2与K的关系可如下表1所示。
表1
i K f 1 f 2 i K f 1 f 2 i K f 1 f 2 i K f 1 f 2
1 40 3 10 48 416 25 52 95 1120 67 140 142 3200 111 240
2 48 7 12 49 424 51 106 96 1152 35 72 143 3264 443 204
3 56 19 42 50 432 47 72 97 1184 19 74 144 3328 51 104
4 64 7 16 51 440 91 110 98 1216 39 76 145 3392 51 212
5 72 7 18 52 448 29 168 99 1248 19 78 146 3456 451 192
6 80 11 20 53 456 29 114 100 1280 199 240 147 3520 257 220
7 88 5 22 54 464 247 58 101 1312 21 82 148 3584 57 336
8 96 11 24 55 472 29 118 102 1344 211 252 149 3648 313 228
9 104 7 26 56 480 89 180 103 1376 21 86 150 3712 271 232
10 112 41 84 57 488 91 122 104 1408 43 88 151 3776 179 236
11 120 103 90 58 496 157 62 105 1440 149 60 152 3840 331 120
12 128 15 32 59 504 55 84 106 1472 45 92 153 3904 363 244
13 136 9 34 60 512 31 64 107 1504 49 846 154 3968 375 248
14 144 17 108 61 528 17 66 108 1536 71 48 156 4032 127 168
LDPC编码过程也包括比特交织，同样通过码块内的比特交织提高译码性能。具体交织过程为：根据调制阶数将码块的比特序列分为K/Q m组，然后依次轮流取各组的比特重新排列，K为码块大小，或者说码块包括的比特数量，Q m为调制阶数。
示例性的，以K等于24，Q m等于4为例，如图1a所示，一个矩形表示一个比特，方块中的数字表示比特的索引，则交织前的比特序列按索引大小依次排列，在交织过程中，按照虚线的箭头方向依次轮流取各组的比特重新排序，交织后的比特序列如图1a所示。
polar编码过程也包括比特交织，以码块为单位通过码块内的交织提高译码性能。具体交织过程中，将码块分为32个子块，按一定顺序对子块重新排列，重新排列的子块组成的新比特序列即为交织后的序列。
示例性的，如图1b所示，一个矩形表示码块的一个子块，交织前子块0至子块31按序排列，交织后，子块3和子块4交换顺序，子块9-15与子块6-12交换顺序并交叉，子块27和子块28交换顺序。
3、物理层数据处理过程：
从媒体接入控制(medium access control，MAC)层发往物理层的数据是以传输块(transport block，TB)的形式组织的。MAC层发往物理层的可以是一个TB，也可以是多个TB。物理层对TB添加循环冗余校验(cyclic redundancy check，CRC)信息得到码字，并对码字分段后得到多个码块。
参见图2，图2中的数据比特流可以是码字分段后得到的多个码块。发送端对每个码块进行编码(channel coding)、调制(modulation)、时频资源映射，并将时频资源映射后的信号转换成时域信号添加循环前缀(cyclic prefix，CP)后发送出去。相应的，接收端接收到时域信号后，对该时域信号进行去CP、时域信号转频域信号、时频资源解映射、解调、译码后得到数据比特流。
需要说明的是，图2仅是示例性的示出物理层数据处理流程中的部分步骤，在实际应用 中，物理层的数据处理流程还可以包括速率匹配、层映射、预编码、频域频谱成型、串并转换、并串转换、放大等。
4、载波、频点、子载波：
载波：是指具有特定带宽的无线电信号(或称为电磁波)，是用于承载信息的主体。其中，载波带宽指载波的最高频率与最低频率的差值。
载波的频点：是指载波的中心频率。
子载波：一个载波可以分解为多个子载波。现有通信系统中，定义了五种子载波间隔，分别是15KHz、30KHz、60KHz、120KHz、240KHz。其中，子载波间隔可以理解为子载波的频率范围，或者说子载波的最高频率与最低频率的差值，不同的子载波间隔大小可以对应不同的时隙(slot)长度，如，当子载波间隔为15KHz时，时隙长度为1ms；当子载波间隔为30KHz时，时隙长度为0.5ms；当子载波间隔为60KHz时，时隙长度为0.25ms；当子载波间隔为120KHz时，时隙长度为0.125ms；当子载波间隔为240KHz时，时隙长度为0.0625ms。上述子载波间隔仅为举例，本申请对子载波间隔的取值不进行具体限制。
子载波的频点：是指子载波的中心频率。
以上为本申请相关技术的简要介绍，下面对本申请的方案进行说明。
高频通信中的相位噪声(phase noise，PHN)会引起严重的中射频失真问题，随着频段的增加，相位噪声功率谱密度(power spectral density，PSD)越高，对接收信号的影响越大。示例性的，如图3a和图3b所示，为两种相位噪声模型下不同频点对应的PSD示意图。
图3a中，发送端和接收端的工作频点为29.55GHz、45GHz、70GHz时，在频率偏移量10 4Hz处产生的相位噪声功率谱密度大约分别为-88dBc/Hz、-84dBc/Hz、-80dBc/Hz，即工作频点越高，相位噪声的PSD越大。图3b中，发送端和接收端的工作频点为30GHz、40GHz、70GHz时，在频率偏移量10 4Hz处产生的相位噪声功率谱密度大约分别为-86dBc/Hz、-82dBc/Hz、-78dBc/Hz，同样地，工作频点越高，相位噪声的PSD越大。
其中，相位噪声对OFDM符号的影响主要包括CPE和ICI两方面，如图4a所示，CPE导致信号星座点的旋转，如图4b所示，ICI导致星座点的发散。
针对高频不可忽略的相位噪声，现有协议支持使用离散的PTRS估计CPE和/或ICI，并根据估计值进行补偿。在基于估计的CPE和/或ICI进行补偿后，因为噪声及PTRS数量的关系，会残留一部分CPE和/或ICI，该残留的CPE与ICI统称为残余相噪。
若将残余相噪理解为噪声或干扰，一个OFDM符号i上残余相噪的功率为P res,i时，其等效SNR或SIR可以表示为：10×log 10(1/P res,i)，该等效SNR或SIR在不同OFDM符号上的累积分布函数(cumulative distribution function，CDF)曲线如图5a中的实线所示。
此外，图5a中的虚线为白噪声的等效SNR或SIR在不同OFDM符号上的CDF曲线。其中，白噪声在该多个OFDM符号上的平均功率与残余相噪在该多个OFDM符号上的平均功率相同。由图5a可得，残余相噪引起的等效SNR或SIR的变化范围远超于白噪声，即残余相噪在不同OFDM符号上的等效SNR/SIR差别较大，最大可以相差8dB。
需要说明的是，本申请中，一个OFDM符号上残余相噪的功率P res,i指：该OFDM符号对应的多个子载波上残余相噪的功率平均值；多个OFDM符号上残余相噪的平均功率指：P res,i的平均值，i＝1,2,...,I，I为OFDM符号数。
该情况下，一个OFDM符号上传输一个或多个码块时，由于残余相噪等效的SNR或SIR的变化范围较大，若某个OFDM符号上残余相噪的等效SNR或SIR较低，该符号上的码块可能译码出错，此时，即使其他OFDM符号上残余相噪的等效SNR或SIR较高，整个时隙 的码块均按错传处理，降低传输速率，导致频谱效率下降。
示例性的，如图5b所示，以一个时隙上的14个OFDM符号为例，前两个OFDM符号上传输物理下行控制信道(physical downlink control channel，PDCCH)，第三个OFDM符号上传输解调参考信号(demodulation reference signal，DMRS)，后11个OFDM符号的每个OFDM符号上传输两个码块(code block，CB)，每个OFDM符号上残余相噪的功率如图5b所示时，倒数第三个OFDM符号上残余相噪的功率较大，则相应的等效SNR或SIR较低，若该OFDM符号上的CB17和CB16译码出错，则整个时隙中的码块按错传处理，从而导致频谱效率的下降。
基于此，本申请提供一种交织方法，能够使得同一个码块被映射至多个OFDM符号上传输，进而平均不同码块上残余相噪的等效SNR或SIR，提升传输速率以及频谱效率。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。其中，在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A,B可以是单数或者复数。并且，在本申请的描述中，除非另有说明，“至少一个”是指一个或者多个，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，a和b和c，其中a，b，c可以是单个，也可以是多个。
另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
本申请实施例的技术方案可以应用于各种通信系统。例如：正交频分多址(orthogonal frequency-division multiple access，OFDMA)、单载波频分多址(single carrier FDMA，SC-FDMA)、卫星通信系统、非陆地通信网络(non-terrestrial network，NTN)、物联网(internet of things，IoT)系统、或未来演进的通信系统等。术语“系统”可以和“网络”相互替换。此外，通信系统还可以适用于面向未来的通信技术，都适用本申请实施例提供的技术方案。
上述适用本申请的通信系统仅是举例说明，适用本申请的通信系统不限于此，在此统一说明，以下不再赘述。
如图6所示，为本申请提供的一种通信系统10a。该通信系统10a包括发送端装置201和接收端装置202。
在一些实施例中，发送端装置201和接收端装置202可以为不同类型的设备，例如，发送端装置201和接收端装置202中的一个为网络设备，另一个为终端设备。或者，发送端装置201和接收端装置202也可以为相同类型的设备，例如，发送端装置201和接收端装置202均为终端设备，或，发送端装置201和接收端装置202均为网络设备，本申请实施例对此不做具体限定。
在一些实施例中，发送端装置201或接收端装置202可以通过图7中的通信装置来实现。图7所示为本申请提供的通信装置300的硬件结构示意图。该通信装置300包括处理器301，通信线路302，以及至少一个通信接口(图7中仅是示例性的以包括通信接口304为例进行说明)。进一步的，该通信装置300还可以包括存储器303。
处理器301可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路302可包括一通路，在上述组件之间传送信息。
通信接口304，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器303可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路302与处理器相连接。存储器也可以和处理器集成在一起。
其中，存储器303用于存储执行本申请方案的计算机执行指令，并由处理器301来控制执行。处理器301用于执行存储器303中存储的计算机执行指令，从而实现本申请下述实施例提供的交织、解交织方法。
在一些实施例中，本申请实施例中的计算机执行指令也可以称之为应用程序代码或者计算机程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器301可以包括一个或多个CPU，例如图7中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置300可以包括多个处理器，例如图7中的处理器301和处理器308。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，通信装置300还可以包括输出设备305和输入设备306。输出设备305和处理器301通信，可以以多种方式来显示信息。例如，输出设备305可以是液晶显示器(liquid crystal display，LCD)，发光二极管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备306和处理器301通信，可以以多种方式接收用户的输入。例如，输入设备306可以是鼠标、键盘、触摸屏设备或传感设备等。
此外，如图8所示，为本申请提供的另一种通信系统10b。该通信系统10b包括至少一个网络设备50，以及与该网络设备50连接的一个或多个终端设备40。进一步的，不同的终端设备40之间可以相互通信。
作为一种示例，该通信系统20b中可以包括多种传输场景，例如，多站点传输、回传、设备到设备(device to device，D2D)传输等。本申请的交织、解交织方法可以应用于该多种传输场景中。
作为一种示例，本申请实施例中的网络设备50，是一种将终端设备40接入到无线网络的设备。所述网络设备50可以为无线接入网中的节点，又可以称为基站，还可以称为无线接入网(radio access network，RAN)节点(或设备)。例如，网络设备可以包括长期演进(long  term evolution，LTE)系统或演进的LTE系统(LTE-Advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，如传统的宏基站eNB和异构网络场景下的微基站eNB；或者也可以包括5G新无线(new radio，NR)系统中的下一代节点B(next generation node B，gNB)，或者还可以包括传输接收点(transmission reception point，TRP)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)、基带池BBU pool，或WiFi接入点(access point，AP)等；再或者还可以包括云接入网(cloud radio access network，CloudRAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)；又或者可以包括非陆地网络(non-terrestrial network，NTN)中的网络设备，即可以部署于高空平台或者卫星，在NTN中，网络设备可以作为层1(L1)中继(relay)，或者可以作为基站，或者可以作为DU，或者可以作为接入回传一体化(integrated access and backhual，IAB)节点，本申请实施例并不限定。
作为一种示例，本申请实施例中的终端设备40，可以是用于实现无线通信功能的设备，例如终端或者可用于终端中的芯片等。其中，终端可以是5G网络或者未来演进的PLMN中的用户设备(user equipment，UE)、接入终端、终端单元、终端站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、终端代理或终端装置等。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备或可穿戴设备，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(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)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。或者，终端可以是车联网(vehicle-to-everything，V2X)中的终端(例如车联网设备)、设备到设备(Device to Device)通信中的终端、或者机器到机器(machine to machine，M2M)通信中的终端等。终端可以是移动的，也可以是固定的。
在一些实施例中，如图9所示，为本申请实施例提供的网络设备50和终端设备40的结构示意图。
其中，终端设备40包括至少一个处理器(图9中示例性的以包括一个处理器401为例进行说明)和至少一个收发器(图9中示例性的以包括一个收发器403为例进行说明)。进一步的，终端设备40还可以包括至少一个存储器(图9中示例性的以包括一个存储器402为例进行说明)、至少一个输出设备(图9中示例性的以包括一个输出设备404为例进行说明)和至少一个输入设备(图9中示例性的以包括一个输入设备405为例进行说明)。
处理器401、存储器402和收发器403通过通信线路相连接。通信线路可包括一通路，在上述组件之间传送信息。
处理器401、存储器402、输出设备404、输入设备405的相关描述可参考图7所示的通信设备300中处理器301、存储器303、输出设备305、和输入设备306的描述，在此不再赘述。
收发器403可以使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网、无线接入网(radio access network，RAN)、或者无线局域网(wireless local area networks，WLAN)等。收发器403包括发射机(transmitter，Tx)和接收机(receiver，Rx)。
存储器402可以是独立存在，通过通信线路与处理器401相连接。存储器402也可以和 处理器401集成在一起。
其中，存储器402用于存储执行本申请方案的计算机执行指令，并由处理器401来控制执行。具体的，处理器401用于执行存储器402中存储的计算机执行指令，从而实现本申请实施例中所述的交织、解交织方法。
或者，本申请实施例中，也可以是处理器401执行本申请下述实施例提供的交织、解交织方法中的处理相关的功能，收发器403负责与其他设备或通信网络通信，本申请实施例对此不作具体限定。
网络设备50包括至少一个处理器(图9中示例性的以包括一个处理器501为例进行说明)和至少一个收发器(图9中示例性的以包括一个收发器503为例进行说明)。进一步的，网络设备50还可以包括至少一个存储器(图9中示例性的以包括一个存储器502为例进行说明)和至少一个网络接口(图9中示例性的以包括一个网络接口504为例进行说明)。其中，处理器501、存储器502、收发器503和网络接口504通过通信线路相连接。网络接口504用于通过链路(例如S1接口)与核心网设备连接，或者通过有线或无线链路(例如X2接口)与其它网络设备的网络接口进行连接(图9中未示出)，本申请实施例对此不作具体限定。另外，处理器501、存储器502和收发器503的相关描述可参考终端设备40中处理器401、存储器402和收发器403的描述，在此不再赘述。
可以理解的是，图9所示的结构并不构成对终端设备40以及网络设备50的具体限定。比如，在本申请另一些实施例中，终端设备40或网络设备50可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
需要说明的是，本申请下述实施例中各个装置之间的消息名字或各参数的名字等只是一个示例，在其他的实施例中也可以是其他的名字，本申请所提供的方法对此不作具体限定。
可以理解的，本申请实施例中，发送端装置和/或接收端装置可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。
以图6所示的发送端装置和接收端装置进行交互为例，如图10所示，为本申请提供的一种交织和解交织方法，其中，由发送端装置执行的方法为交织方法，由接收端装置执行的方法为解交织方法，该方法包括如下步骤：
S1001、发送端装置确定第一交织组。
其中，该第一交织组包括N1个数据块，该N1个数据块中的一个数据块包括至少两个数据单元，不同数据块包括的数据单元的个数可以相同，也可以不同，本申请所提供的方法对此不做具体限定。N1为大于1的正整数。
需要说明的是，本申请中的“第一交织组”是对N1个数据块的统称，其也可以称为“第一交织单元”或“第一交织集合”，或者在其他实施例中也可以有其他名称，本申请所提供的方法对此不做具体限定。
其中，该N1个数据块对应多个码块(code block)。
在不同的实施方式中，本申请中的数据块、数据单元所指的对象不同。示例性的：
一种可能的实现方式中，如图11a所示，该交织方法在信道编码后、调制前执行时，本申请中的数据块为码块，数据单元为比特，此时，该N1个数据块对应多个码块可以理解为：N1个数据块为N1个码块。其中，一个码块的长度为一个码块包括的比特数量。
或者，本申请中的数据块为比特块，数据单元为比特，此时，N1个数据块为N1个比特块，N1个数据块对应多个码块可以理解为：该N1个比特块包括的比特为多个码块的比特。作为一种示例，一个码块的比特可以被划分至多个比特块中，例如，某个码块包括80个比特，该码块的前40个比特可以被划分至比特块1中，后40个比特可以被划分至比特块2中。
另一种可能的实现方式中，如图11b所示，该交织方法在调制后、时频资源映射前执行时，本申请中的数据块为调制符号块，数据单元为调制符号，此时，N1个数据块为N1个调制符号块，该N1个数据块对应多个码块可以理解为：该N1个调制符号块包括的调制符号为多个码块进行调制后得到的调制符号。一个调制符号块可以包括一个码块进行调制后得到的调制符号，或者，也可以包括多个码块进行调制后得到的调度符号，此外，一个码块进行调制后得到的调制符号可以被划分至多个调制符号块中。
下面对发送端装置确定第一交织组的方法进行说明。在一些实施例中，发送端装置确定第一交织组，可以包括：将N CB个数据块划分为P1个交织组，第一交织组为P1个交织组中的一个。其中，N CB为一个传输单元内传输的数据块的总数，P1为正整数。
示例性地，本申请中的传输单元包括至少两个时间单元。该传输单元可以为时隙，或者子帧，或者半帧，或者无线帧(或者称为帧)，或者超帧等。时间单元为符号，例如OFDM符号，或者单载波频分多址接入(single carrier frequency division multiple access，SC-FDMA)符号等。其中，OFDM符号可以为：循环前缀(cyclic prefixed，CP)OFDM符号，即CP-OFDM符号，或者，离散傅里叶变换扩展(Discrete Fourier Transformation-Spread，DFT-s)OFDM符号，即DFT-s-OFDM符号。
示例性地，该P1个交织组所包括的数据块的个数满足以下一项或多项：
(1)、该P1个交织组中不同交织组所包括的数据块的个数相同，也就是说，N CB为N1的P1倍。
(2)、该P1个交织组中一部分交织组所包括的数据块的个数为第一数值，该P1个交织组中剩余部分交织组所包括的数据块的个数为第二数值。例如，P1等于8，其中3个交织组所包括的数据块的个数均为4，5个交织组所包括的数据块的个数均为5。
(3)、该P1个交织组中不同交织组所包括的数据块的个数不同。也就是说，P1个交织组所包括的数据块的个数互不相同。
(4)、该P1个交织组中不同交织组所包括的数据块的个数不同，且随着P1个交织组的排列顺序递增或递减。作为一种示例，递增值或递减值为1，例如，P1等于3，第一个交织组所包括的数据块个数为2，第二个交织组所包括的数据块个数为3，第三个交织组所包括的数据块个数为4。
(5)、该P1个交织组中各个交织组包括的数据块个数中，最大值与最小值之差小于或等于第一阈值。即在该P1个交织组对应的P1个数据块个数中，最大数据块个数与最小数据块个数之差小于或等于第一阈值。例如，P1等于3，3个交织组包括的数据块个数分别为C1、C2、C3，且C3最大，C2最小，则C3与C2之差小于或等于第一阈值。在该条件下，能够使得P1个交织组中各个交织组包括的数据块个数尽可能接近。
在不同的实施方式中，该第一阈值可以是协议预定义的，也可以是发送端装置自主决定的，还可以是收发端按统一的规则确定的。示例性地，在发送端装置为终端设备，接收端装置为网络设备时，第一阈值可以是网络设备向终端设备指示的，本申请所提供的方法对此不作具体限定。
需要说明的是，一个交织组包括的数据块个数可称为该交织组的交织深度(interleave  depth)，这两个概念可以相互替换，本申请所提供的方法对此不做具体限定。
在一些实施例中，发送端装置在确定P1个交织组时，可以先确定一个第一交织深度d init，若数据块总数N CB为该第一交织深度的P1倍，则该P1个交织组中每个交织组的交织深度均为该第一交织深度d init。若数据块总数N CB不能整除该初始交织深度，发送端装置可以根据mod(N CB,d init)和/或d init确定第二交织深度d new，最终使得该P1个交织组的深度满足上述(1)至(5)中的一项或多项条件。
示例性的，若d init＝2，mod(N CB,d init)＝1，则发送端装置可以确定第二交织深度d new为：d new＝d init+mod(N CB,d init)＝3，即某个数据块可以与其相邻的两个数据块组成一个交织组，其余每两个数据块组成一个交织组，换句话说，P1个交织组中有一个交织组包括三个相邻的数据块，其余交织组分别包括两个数据块。
或者，示例性的，若d init＝4，mod(N CB,d init)＝1，则发送端装置可以确定第二交织深度d new为：d new＝d init+mod(N CB,d init)＝5，即某个数据块可以与其相邻的四个数据块组成一个交织组，其余每四个数据块组成一个交织组，换句话说，P1个交织组中有一个交织组包括五个相邻的数据块，其余交织组分别包括四个数据块。
或者，示例性的，若d init＝4，mod(N CB,d init)＝2，第一阈值为1，则发送端装置可以确定第二交织深度d new为：d new＝(d init+mod(N CB,d init))/2＝3，即存在两个交织组的交织深度为3，其余交织组的交织深度为4。
或者，示例性的，若d init＝4，mod(N CB,d init)＝3，第一阈值为1，则发送端装置可以确定第二交织深度d new为：d new＝mod(N CB,d init)＝3，即某三个数据块组成一个交织组，其余每四个数据块组成一个交织组。
也就是说，一个传输单元对应的交织组的交织深度可以包括第一交织深度和第二交织深度，本申请对交织深度为第二交织深度的交织组的位置不进行限定，其可以是最后一个或多个交织组，或者可以是第一个或前几个交织组，或者可以是中间的一个或多个交织组。
S1002、发送端装置对第一交织组进行交织，得到交织后的数据单元序列。
其中，该数据单元序列包括多个子数据单元序列，一个子数据单元序列包括K1个数据块中每个数据块的M1个数据单元，不同数据单元序列对应的K1的取值可以相同也可以不同，M1为正整数，K1为小于或等于N1的正整数。
需要说明的是，本申请中的M1也可以称为交织粒度，这两个概念可以相互替换，本申请所提供的方法对此不做具体限定。
在一些实施例中，该M1能够被上述N1个数据块中一个数据块包括的数据单元的个数整除，且除数大于1，也就是说，本申请中，一个数据块包括的数据单元的个数为M1的Z倍，Z为大于1的正整数。基于该方案，能够保证一个个数据块包括的数据单元在交织后至少位于2个子数据单元序列中，从而使得该数据块可以被映射至多个时间单元传输，提高频谱效率。
在一些实施例中，发送端装置对第一交织组进行交织，得到交织后的数据单元序列，可以包括：对第一交织组进行X次交织，得到交织后的数据单元序列，第x次交织中，从N1个数据块中不为空的数据块中分别取出M1个数据单元排列，得到该数据单元序列的第x个子数据单元序列，x＝1，…，X。
其中，由于N1个数据块中不同数据块中包括的数据单元的个数可能不同，因此，在第x-1次交织后某些数据块中的数据单元已经被全部取出排列，此时，该数据块为空，在对该第一交织组进行下一次交织时该为空的数据块不参与交织，从而，第x次交织是针对不为空的 数据块进行的。
为了方便描述，本申请所提供的方法将第x次交织中不为空的数据块的个数记为K1，也就是说，第x个子数据单元序列包括K1个数据块中每个数据块的M1个数据单元。可以理解的是，x的取值不同时，K1的取值可能相同也可能不相同。
在一些实施例中，在第x次交织中，按照第一顺序，以一个数据块的M1个数据单元为单位，对不同数据块之间的数据单元进行排列，得到第x个子数据单元序列，也就是说，在第x个子数据单元序列中同一数据块的M1个数据单元相邻。
作为一种示例，每个子数据单元序列对应的第一顺序相同，或者，至少两个子数据单元序列对应的第一顺序不同。
示例性的，以M1等于2，N1等于4，4个数据块包括的数据单元的个数分别为4，4，4，6，每个子数据单元序列对应的第一顺序相同，且该第一顺序为K1个数据块的排列顺序为例，该第一交织组的交织过程可以如图12所示。参见图12，一个矩形表示一个数据单元，矩形中的第一个数字表示数据单元所属的数据块的索引，第二个数字表示数据单元在该数据块中的索引，矩形中未标注数字表示该数据单元已经被取出进行排列，最终得到的交织后的数据单元序列包括三个子数据单元序列。
具体交织过程如下：
第一次交织时，4个数据块都不为空，发送端装置从每个数据块中取出2个数据单元组成子数据单元序列1，该子数据单元序列1中包括4×2个数据单元，4个数据块的数据单元按照这4个数据块的排列顺序排列。
第二次交织时，4个数据块都不为空，数据块1中的剩余数据单元为(1，3)和(1，4)，数据块2中的剩余数据单元为(2，3)和(2，4)，数据块3中的剩余数据单元为(3，3)和(3，4)，数据块4中的剩余数据单元为(4，3)、(4，4)、(4，5)、和(4，6)，发送端装置从每个数据块中取出2个数据单元组成子数据单元序列2，该子数据单元序列2中包括4×2个数据单元，4个数据块的数据单元按照这4个数据块的排列顺序排列。
第三次交织时，4个数据块中的前3个数据块为空，数据块4中的剩余数据单元为(4，5)、和(4，6)，发送端装置从数据块4中取出(4，5)、和(4，6)组成子数据单元序列3。该子数据单元序列2中包括1×2个数据单元。
示例性的，以M1等于2，N1等于4，4个数据块包括的数据单元的个数相同均为4，不同子数据单元序列采用不同的第一顺序不同为例，该第一交织组的交织过程可以如图13所示。参见图13，交织过程可参考图12所示的示例，区别在于：子数据单元序列1对应的第一顺序为4个数据块的排列顺序，子数据单元序列2对应的第一顺序为4个数据块的排列顺序循环右移一位后的顺序，即按照数据块2、3、4、1排序。
在一些实施例中，在N1个数据块的长度C相等、交织后的数据单元序列包括的每个子数据单元序列对应的第一顺序相同、且第一顺序为K1个数据块的排列顺序时，交织后的数据单元序列满足如下公式：
Figure PCTCN2020141872-appb-000009
其中，b为交织前N1个数据块的数据单元序列，floor表示向下取整，mod表示取模运算，i＝0,1,...,N1×C-1。
示例性的，以M1等于2，N1等于4，C等于4为例，如图14所示，交织前数据单元序列包括的数据单元的索引为0至15，交织后B(0)＝b(0)，B(1)＝b(1)，B(2)＝b(4)， B(3)＝b(5)，……，B(15)＝b(15)。
在一些实施例中，第一交织组中的N1个数据块不连续。例如，将一个传输单元中传输的数据划分为多个连续的数据块，且该多个连续的数据块分别对应一个索引，则该N1个数据块不连续可以包括：第一交织组中的N1个数据块中，至少存在两个相邻的数据块的索引之差大于1；或者，第一交织组中的N1个数据块中，任意两个相邻数据块的索引之差大于1。其中，在该N1个数据块中，两个相邻数据块的索引之差可以相等也可以不等。
示例性的，以一个传输单元中传输的数据被划分为16个数据块为例，如图15所示，每个矩形表示一个数据块，矩形上的数字表示数据块的索引，若N1等于4，该第一交织组包括的4个数据块可以为数据块1、数据块2、数据块3、数据块5；或者，该第一交织组包括的4个数据块可以为数据块1、数据块3、数据块5、数据块7；或者，该第一交织组包括的4个数据块可以为数据块1、数据块3、数据块4、数据块6，还可以为其他情况，本申请所提供的方法对此不做具体限定。
示例性的，基于图15所示的第一交织组包括数据块1、数据块3、数据块5、数据块7，以该4个数据块中的每个数据块包括4个数据单元，M1等于2为例，第一交织组交织后的数据单元序列可如图16所示，其中，一个矩形表示一个数据单元，矩形中的第一个数字表示数据单元所属的数据块的索引，第二个数字表示数据单元在该数据块中的索引。
综上，本申请通过配置第一交织组中包含的数据块的数量N1、交织后得到的子数据单元序列中各个数据块包含的数据单元的数量M1执行数据块间的交织。基于该方案，相比于urbo编码、LDPC编码、Polar编码中在码块内交织的方案，本申请提供的方法中，交织组中的数据块对应不同的码块，在一次交织后得到的某个子数据单元序列中，能够包括对应不同码块的数据单元，从而后续在对交织后的数据单元序列进行资源映射时，对应同一个码块的多个数据单元可能被映射至多个符号上传输，进而平均不同码块上残余相噪的等效SNR或SIR，提升码块经历的等效信道在时间维度上的多样性，进而提升传输速率以及频谱效率。
下面，对本申请中第一交织组中包含的数据块的数量N1、交织后得到的子数据单元序列中各个数据块中包含的数据单元的数量M1的取值进行说明。首先，对于N1：
在一些实施例中，N1是根据以下一项或多项确定的，或者说，影响N1取值的因素包括以下一项或多项：调度带宽、调制编码方式(modulation and coding scheme，MCS)、残余相噪、子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、PTRS的数量、一个时间单元上传输的数据块的数量Q。
一种可能的实现方式中，N1是根据残余相噪确定的，从残余相噪功率的角度来看，N1的取值与残余相噪的功率正相关。其中，残余相噪的功率越大，残余相噪等效的SNR或SIR越小，因此，也可以认为N1的取值与残余相噪等效的SNR或SIR负相关。
需要说明的是，此处“残余相噪的功率”表示多个时间单元上残余相噪的平均功率。
作为一种示例，残余相噪的功率与子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、PTRS的数量等相关。例如，子载波间隔越大，残余相噪的功率越小；工作频点越高，相噪模型一般越差，残余相噪的功率越大；相噪模型越差，残余相噪的功率越大；接收机的补偿算法引入的ICI的阶数越高，残余相噪的功率越小。因此，结合残余相噪的功率与子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、PTRS的数量等之间的关系，以及N1与残余相噪的功率之间的关系，可建立N1与子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、PTRS的数量等之间的关系。
另一种可能的实现方式中，N1是根据MCS确定的。可以理解的是，协议中通过MCS 的索引值指示调制方式和码率，一般来讲，MCS的索引值越大，码率和/或调制阶数越高。
作为一种示例，该实现方式中，从残余相噪对译码性能的影响来看，调制阶数或码率越高，残余相噪对译码性能的影响越大，从而需用更大的N1抵抗残余相噪的影响，即N1与MCS正相关，或者，N1与MCS的索引值正相关，或者，N1与调制阶数和/或码率正相关。也就是说，调制阶数越高，N1的取值越大；码率越高，N1的取值越大。
又一种可能的实现方式中，N1是根据调度带宽确定的，且N1与调度带宽正相关。其中，调度带宽越大，一个传输单元中待传输的数据单元的数量越多，在数据块包括的数据单元的最大数量有限的情况下，数据单元的数量越多，数据块的个数越多。又由于一个传输单元包括的时间单元的数量有限，因此调度带宽越大，一个时间单元上传输的数据块的数量越多，相应的，N1越大。
再一种可能的实现方式中，N1是根据一个时间单元上传输的数据块的数量Q确定的。示例性的：
在Q大于或等于第二阈值时：N1满足：N1＝S×int(Q)，S为大于或等于2的正整数，int(Q)表示对Q取整，例如向上取整或向下取整或四舍五入取整。
在Q小于第二阈值，且大于或等于第三阈值时，N1为第三数值，作为一种示例，该第三数值大于或等于2。
在Q小于第三阈值时，N1为1，此时，本申请的方案可以不执行。
在本申请的一种实施场景下，该第二阈值为1，第三阈值为0.5。该场景下，在Q大于或等于1时，一个时间单元上传输一个或多个数据块，该一个或多个数据块经历的残余相噪等效的SNR或SIR较单一，存在整体频谱效率较低的问题，此时，N1大于或等于2，发送端装置执行本申请的交织方法进行数据块间的交织，从而提升频谱效率。在Q大于或等于0.5，且小于1时，N1大于或等于2，能够保证Q趋近于1时，同一码块至少能映射在两个时间单元上传输。在Q小于0.5时，一个数据块在至少两个时间单元上传输，至少经历两个时间单元上残余相噪等效的SNR或SIR，对频谱效率的影响较小，可以不执行本申请的交织方法。
需要说明的是，上述仅是示例性的对N1的取值趋势进行说明，不对N1的具体取值构成任何限定。
此外，由图12至图14的示例可得，N1越大，交织后同一数据块的数据单元间隔越远，在接收端需获取更长的数据序列才能译码出一个完整的数据块，即译码时延越长，因此，N1的取值影响译码时延，N1越大，译码时延越长，从而为了将译码时延控制在一定范围内，N1的取值并不是越大越好，实际应用中，需综合考虑时延、调度带宽、MCS、残余相噪等确定N1的取值。
对于交织后得到的子数据单元序列中各个数据块中包含的数据单元的数量M1：
可以理解的是，M1的取值决定数据块的交织均匀性，M1的取值越小，交织越均匀。另外，M1的取值与信道频选性相关，信道频选性越小，M1的取值越大，信道频选性越大，M1的取值越小。
若本申请中的数据块为码块或比特块，数据单元为比特时M1的取值为A，数据块为码块或调制符号块，数据单元为调制符号时M1的取值为B，则M mod*B的取值集合可包含于A的取值集合中，M mod为调制阶数。例如，A可以取2至8中的一个，当M mod＝2时，M mod*B可以取2、4、6、8中的一个。可见，无论数据单元为比特或调制符号，二者所达到的交织结果等效。
在一些实施例中，该步骤S1002后，发送端装置还可以按照S1002中的方法对P1个交 织组中除第一交织组外的其他交织组进行交织，可参考S1002的相关描述，在此不再赘述。
发送端装置完成对第一交织组的交织后，可以执行下述步骤S1003。
S1003、发送端装置发送第一交织组对应的交织后的数据单元序列。相应的，接收端装置获取该交织后的数据单元序列。
在一些实施例中，发送端装置发送第一交织组对应的交织后的数据单元序列，可以为：发送端装置对该交织后的数据单元序列进行处理，并发送处理后的数据单元序列。示例性的，对交织后的数据单元序列的处理可以包括：时频资源映射、频域信号转换为时域信号、添加循环前缀等。
相应的，接收到装置获取交织后的数据单元序列，可以为：接收端装置接收发送端装置处理后的数据单元序列，对该处理后的数据单元序列进行逆处理，得到该交织后的数据单元序列。示例性的，对处理后的数据单元序列进行的逆处理可以包括：去循环前缀、时域信号转换频域信号、时频资源解映射等。
可以理解的，接收端装置获取到的该交织后的数据单元序列包括L个子数据单元序列，L为正整数，该数据单元序列中的数据单元对应多个码块。其中，L与步骤S1002中得到的交织后的数据单元序列所包括的子数据单元序列的总数相等，即发送端描述的“交织后的数据单元序列包括多个子数据单元序列”中的多个子数据单元序列指的是接收端描述的“交织后的数据单元包括L个子数据单元序列”中的L个子数据单元序列。示例性的，基于图12所示的示例，L等于3。
S1004、接收端装置对该数据单元序列进行解交织，得到N1个数据块。
其中，该N1个数据块中每个数据块包括H1个子数据单元序列中每个子数据单元序列的M1个数据单元，H1为小于或等于L的正整数。
在一些实施例中，接收端装置对数据单元序列进行解交织，可以包括：接收端装置根据以下一项或多项对该数据单元序列进行解交织：数据块的数目N1、N1个数据块中每个数据块的长度、M1、L个子数据单元序列中每个子数据单元序列的长度、或者每个子数据单元序列中数据单元块的排列顺序，其中，每个数据单元块包括M1个数据单元，也就是说，每个子数据单元序列中数据单元块的排列顺序即为前述第一顺序。
示例性的，基于图12所示的示例，接收端装置获取到的交织后的数据单元序列如图17所示，接收端装置可以根据每个子数据单元序列的长度8、8、2将该数据单元序列划分为3个子数据单元序列；之后，根据第一个数据块的长度4，以及数据单元块的排列顺序(该示例中为数据块的排列顺序)，取出子数据单元序列1的前两个数据单元，以及子数据单元序列2的前两个数据单元组成数据块1，直至最终得到4个数据块。
在一些实施例中，上述用于接收端装置解交织的参数可以是协议预定义的。或者，在发送端装置为网络设备，接收端装置为终端设备时，其可以是网络设备发送给终端设备的。此时，网络设备根据该参数进行交织，终端设备根据该参数进行解交织。
在一些实施例中，在发送端装置为终端设备，接收端装置为网络设备时，网络设备也可以向终端设备发送上述参数，此时，终端设备根据该参数进行交织，网络设备使用该参数进行解交织。
在一些实施例中，接收端装置得到N1个数据块后，可以根据该N1个数据块进行后续的业务处理，本申请所公开的方法对此不作具体限定。
至此，基于本申请的交织、解交织方法，在发送端，进行数据块间的交织，使得同一个码块的多个数据单元可能被映射至多个符号上传输，进而平均不同码块上残余相噪的等效 SNR或SIR，提升码块经历的等效信道在时域上的多样性，在接收端，进行相应解交织，提升传输速率以及频谱效率。
此外，以图6所示的发送端装置和接收端装置进行交互为例，本申请还提供一种交织和解交织方法，如图18所示，该交织方法可以在时频资源映射之后执行，相应的，该解交织方法在时频资源解映射前执行，其中，由发送端装置执行的方法为交织方法，由接收端装置执行的方法为解交织方法。
如图19所示，该方法包括如下步骤：
S1901、发送端装置确定第二交织组。
其中，该第二交织组包括N2个第一时间单元，该第一时间单元对应的频域上包括至少两个频域资源单元，该频域资源单元上映射有调制符号，N2为大于1的正整数。
其中，时间单元的说明可参考图10所示实施例中的相关描述，在此不再赘述。本申请的频域资源单元为资源块(resource block，RB)或者资源元素(resource element，RE)，例如，或者RB包括频域上连续的多个(例如12个)子载波，RE包括频域上的一个子载波。
需要说明的是，本申请中的“第二交织组”是对多个时间单元的统称，其也可以称为“第二交织单元”或“第二交织集合”，或者也可以有其他名称，本申请所公开的方法对此不做具体限定。
在一些实施例中，该N2个第一时间单元不连续。例如，一个传输单元包括多个连续的时间单元，且该多个连续的时间单元分别对应一个索引，则该N2个第一时间单元不连续可以包括：第二交织组的N2个第一时间单元中，至少存在两个相邻的第一时间单元的索引之差大于1；或者，第二交织组的N2个第一时间单元中，任意两个相邻数据块的索引之差大于1。例如，以传输单元为时隙，第一时间单元为OFDM符号，一个时隙包括14个OFDM符号，每个OFDM符号分别对应一个索引，N2等于3为例，第二交织组可以包括OFDM符号1、OFDM符号2、以及OFDM符号4，或者，第二交织组可以包括OFDM符号1、OFDM符号3、以及OFDM符号5。
在一些实施例中，第一时间单元对应的频域上包括的至少两个频域资源单元不连续。例如，第一时间单元对应的至少两个相邻的频域资源单元为相同载波上不连续的两个频域资源单元。
在一些实施例中，发送端装置确定第二交织组可以包括：将N sym个时间单元划分为P2个交织组，第二交织组为P2个交织组中的一个。其中，N sym为一个传输单元内包括的时间单元的总数。其中，传输单元的说明可参考图10所示实施例中的相关描述，在此不再赘述。
在一些实施例中，该P2个交织组所包括的时间单元的个数满足以下一项或多项：
(1)、该P2个交织组中不同的交织组所包括的时间单元的个数相同，也就是说，N sym为N2的P2倍。
(2)、该P2个交织组中一部分交织组所包括的时间单元的个数为第四数值，该P2个交织组中剩余部分交织组所包括的时间单元的个数为第五数值。
(3)、该P2个交织组中不同交织组所包括的时间单元的个数不同。也就是说，P2个交织组所包括的时间单元的个数互不相同。
(4)、该P2个交织组中不同交织组所包括的时间单元的个数不同，且随着P2个交织组的排列顺序递增或递减。
(5)、该P2个交织组分别包括的时间单元的个数中，最大值与最小值之差小于或等于第四阈值。即在P2个交织组对应的P2个时间单元个数中，最大时间单元个数与最小时间单元 个数之差小于或等于第四阈值。
在不同的实施方式中，该第四阈值可以是协议预定义的，也可以是发送端装置自主决定的，或者，可以是接收端装置向发送端装置指示的，本申请对此不作具体限定。
在一些实施例中，发送端装置确定P2个第二交织组的过程与其确定P1个第一交织组的过程类似，区别在于，第二交织组所包括的是时间单元，第一交织组所包括的是数据单元，可参考步骤S1001中的相关描述，在此不再赘述。
S1902、发送端装置对第二交织组进行交织，得到N2个第二时间单元。
其中，该N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，该子调制符号序列包括N2个第一时间单元中至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号，K2、M2为正整数。
需要说明的是，该N2个第二时间单元和N2个第一时间单元对应的时频资源相同，区别在于相同时频资源上承载的部分或全部调制符号不同，或者说，相同调制符号在交织前和交织后位于不同的时频资源上。
在本申请的不同实施场景下，发送端装置对第二交织组进行交织的方法可能不同：
一种可能的实施场景下，第一时间单元对应的频域资源单元上映射的调制符号为数据调制符号，发送端装置对第二交织组进行交织，得到N2个第二时间单元，可以包括：对第二交织组进行Y次交织，得到N2个第二时间单元。第y次交织中，取出N2个第一时间单元中的每个第一时间单元对应的M2个频域资源单元上的数据调制符号进行排列，得到一个子调制符号序列，y＝1，…，Y。
其中，本申请中的“数据调制符号”指业务数据对应的调制符号，与参考信号或非共享信道对应的调制符号不同。
作为一种示例，参考信号可以为以下一项或多项：信道探测信号(sounding reference signal，SRS)、解调参考信号(de-modulation reference signal，DMRS)、PTRS、上行定位信号(uplink positioning RS)、信道状态信息参考信号(channel status information reference signal，CSI-RS)、小区参考信号(Cell reference signal，CRS)、时频精同步参考信号(time/frequency tracking reference signal，TRS)、主同步信号(primary synchronization signal，PSS)、辅同步信号(secondary synchronization signal，SSS)等。
作为一种示例，非共享信道指除物理上行共享信道(physical uplink shared channel，PUSCH)和物理下行共享信道(physical downlink shared channel，PDSCH)之外的其他信道，可以为以下一项或多项：物理随机接入信道(physical random access channel，PRACH)、物理上行控制信道(physical uplink control channel，PUCCH)、物理广播信道(physical broadcast channel，PBCH)、物理下行控制信道(physical downlink control channel，PDCCH)等。
在一些实施例中，在一次交织中，不同第一时间单元对应的M2个频域资源单元所对应的载波或载波频点的索引可以相同也可以不同，本申请对此不做具体限定。也就是说，不同第一时间单元对应的M2个频域资源单元可以是同一载波中的频域资源单元，也可以是不同载波中的频域资源单元。示例性的，第二交织组包括第一时间单元0、第一时间单元1、和第一时间单元2，在一次交织中，第一时间单元0的M2个频域资源单元对应的载波或载波频点的索引为索引1，第一时间单元1和第一时间单元2的M2个频域资源单元对应的载波或载波频点的索引为索引2。
进一步，在不同第一时间单元对应的M2个频域资源单元所对应的载波或载波频点的索引相同时，不同第一时间单元对应的M2个频域资源单元的索引可以相同也可以不同。也就 是说，不同第一时间单元对应的M2个频域资源单元属于同一载波时，不同第一时间单元对应的M2个频域资源单元在该载波中的位置相同或不同。示例性的，第一时间单元1和第一时间单元2的M2个频域资源单元对应的载波或载波频点的索引为索引2，该载波2包括多个频域资源单元，第一时间单元1对应的M2个频域资源单元为载波2的前M2个频域资源单元，第二时间单元2对应的M2个频域资源单元为载波2的后M2个频域资源单元。
在一些实施例中，在第y次交织中，按照第二顺序，以M2个频域资源单元为单位，对N2个第一时间单元中每个第一时间单元对应的M2个频域资源单元上的数据调制符号进行排列，也就是说，在子调制符号序列中同一时间单元对应的M2个频域资源单元上的数据调制符号相邻。
在一些实施例中，每个子调制符号序列对应的第二顺序相同，或者，至少两个子调制符号序列对应的第二顺序不同。
示例性的，以N2等于3，第一时间单元对应的频域上包括6个频域资源单元块，一个频域资源单元块包括M2个频域资源单元为例，该第二交织组的交织过程可以如图20所示。参见图20，一个矩形表示时间维度上的一个时间单元以及频域维度上的一个频域资源单元块，矩形中第一行的第一个数字表示时间单元索引，第二个数字表示频域资源单元块的索引，矩形中第二行括号中的q标识频域资源单元块上承载的一个或多个数据调制符号，未标注q的矩形表示该矩形表示的频域资源单元块承载的数据调制符号已经被取出进行排列。可以理解的是，下述示例中，图20中左图的时间单元为第一时间单元，右图中的时间单元为第二时间单元。
其中，图20中示例性的示出两次交织过程，其余交织过程类似，下面对具体交织过程说明如下：
第一次交织时，从第一时间单元0、1、2中分别取出频域资源单元块(0，0)、(1，2)、(2，1)上承载的数据调制符号q0、q13、q8按照第二顺序进行排列，得到一个子调制符号序列{q0 q13 q8}，该子调制符号序列由第二时间单元0的前3个频域资源单元块(0，0)、(0，1)、(0，2)承载。
由图20可得，此次交织中，第二顺序为频域资源块在频域上的排列顺序，不同时间单元对应的M2个频域资源单元的频域位置不同。
第二次交织时，从第一时间单元0、1、2中分别取出频域资源单元块(0，1)、(1，0)、(2，2)上承载的数据调制符号q1、q6、q14按照第二顺序进行排列，得到一个子调制符号序列{q6 q1 q14}，该子调制符号序列由第二时间单元1的前3个频域资源单元块(1，0)、(1，1)、(1，2)承载。
第三次交织时，从第一时间单元0、1、2中分别取出频域资源单元块(0，2)、(1，1)、(2，0)上承载的数据调制符号q2、q7、q12按照第二顺序进行排列，得到一个子调制符号序列{q12 q7 q2}，该子调制符号序列由第二时间单元2的前3个频域资源单元块(2，0)、(2，1)、(2，2)承载。
第四次交织时，从第一时间单元0、1、2中分别取出频域资源单元块(0，3)、(1，5)、(2，4)上承载的数据调制符号q3、q11、q16按照第二顺序进行排列，得到一个子调制符号序列{q3 q16 q11}，该子调制符号序列由第二时间单元0的后3个频域资源单元块(0，3)、(0，4)、(0，5)承载。
第五次交织时，从第一时间单元0、1、2中分别取出频域资源单元块(0，4)、(1，3)、(2，5)上承载的数据调制符号q4、q9、q17按照第二顺序进行排列，得到一个子调制符号 序列{q9 q4 q17}，该子调制符号序列由第二时间单元1的后3个频域资源单元块(1，3)、(1，4)、(1，5)承载。
第六次交织时，从第一时间单元0、1、2中分别取出频域资源单元块(0，5)、(1，4)、(2，3)上承载的数据调制符号q5、q10、q15按照第二顺序进行排列，得到一个子调制符号序列{q15 q10 q5}，该子调制符号序列由第二时间单元2的后3个频域资源单元块(2，3)、(2，4)、(2，5)承载。
可以理解的是，第二次至第六次交织过程中的第二顺序与第一次交织中的第二顺序相同，且每个第一时间单元对应的M2个频域资源单元的频域位置不同。
综上，在交织前和交织后承载同一数据调制符号的频域资源单元可以如下表2所示：
表2
数据调制符号 交织前所在的频域资源单元 交织后所在的频域资源单元
q0 (0,0) (0,0)
q1 (0,1) (1,1)
q2 (0,2) (2,2)
q3 (0,3) (0,3)
q4 (0,4) (1,4)
q5 (0,5) (2,5)
q6 (1,0) (1,0)
q7 (1,1) (2,1)
q8 (1,2) (0,2)
q9 (1,3) (1,3)
q10 (1,4) (2,4)
q11 (1,5) (0,5)
q12 (2,0) (2,0)
q13 (2,1) (0,1)
q14 (2,2) (1,2)
q15 (2,3) (2,3)
q16 (2,4) (0,4)
q17 (2,5) (1,5)
需要说明的是，上述交织过程中第一次至第六次的交织顺序仅是本申请示例性的说明，实际应用中，可以以任意顺序执行上述六次交织，本申请对此不做具体限定。
示例性的，以N2等于3，第一时间单元对应的频域上包括6个频域资源单元块，一个频域资源单元块包括M2个频域资源单元，不同第一时间单元对应的M2个频域资源单元的频域位置相同，第二顺序为第一时间单元的排列顺序为例，该第二交织组的交织结果可以如图21所示。
示例性的，以N2等于2，第一时间单元对应的频域上包括6个频域资源单元块，一个频域资源单元块包括M2个频域资源单元，不同第一时间单元对应的M2个频域资源单元的频域位置不同，第二顺序为第一时间单元的排列顺序为例，该第二交织组的交织结果可以如图22所示。
另一种可能的实施场景下，N2个第一时间单元对应的频域资源单元上映射的调制符号除 数据调制符号外，还可以包括参考信号对应的调制符号和/或非共享信道对应的调制符号，或者，第一时间单元对应的部分频域资源单元为预留资源。也就是说，第一时间单元对应的部分频域资源单元用于参考信号或非共享信道，或预留。
该场景下，发送端装置可通过如下三种方式进行交织：
方式一：与上述第一时间单元对应的频域资源单元上映射的调制符号均为数据调制符号时的交织方式相同。采用该方式交织后，参考信号、非共享信道、或预留资源的位置发生变化，网络设备需根据该交织规则重新配置参考信号、非共享信道、或预留资源的位置。
示例性的，如图23所述，假设有参考信号1(图23中以rs1表示)和参考信号2(图23中以rs2表示)，交织前，参考信号1由第一时间单元0上的频域资源单元块(0，2)承载，交织后，参考信号1由第二时间单元2上的频域资源单元块(2，2)承载；交织前，参考信号2由第一时间单元2上的频域资源单元块(2，4)承载，交织后，参考信号2由第二时间单元上0的频域资源单元块(0，4)承载，参考信号1和参考信号2的位置发生变化。
基于该方式，发送端装置的交织过程较简单，交织复杂度低，从而发送端装置的实现复杂度较低。
方式二：与上述第一时间单元对应的频域资源单元上映射的调制符号均为数据调制符号时的交织方式类似，区别在于：第一时间单元对应的某个频域资源单元用于映射参考信号或非共享信道，或该频域资源单元为预留资源时，该频域资源单元不参与交织。也就是说，N2个第一时间单元对应的第一时频资源与N2个第二时间单元对应的第一时频资源相同，该第一时频资源用于承载参考信号和/或非共享信道，或者，该第一时频资源为预留资源。
示例性的，如图24所示，假设有参考信号1(图24中以rs1表示)和参考信号2(图24中以rs2表示)，交织前，参考信号1由第一时间单元上0的频域资源单元块(0，2)承载，参考信号2由第一时间单元2上的频域资源单元块(2，4)承载，按照上述交织方法，频域资源单元块(1，2)上的数据调制符号应该被交织到频域资源单元块(0，2)，然而，频域资源单元块(0，2)承载有参考信号1，该频域资源单元块不参与交织，因此，交织后，频域资源单元块(0，2)上映射的参考信号1的位置不变。类似地，频域资源单元块(2，4)上映射的参考信号2的位置不变。
基于该方式，网络设备无需重新配置参考信号、非共享信道、或预留资源的位置，网络设备的实现复杂度较低。
方式三：与上述方式二类似，区别在于，频域资源单元包括多个子载波，第一时间单元对应的某个频域资源单元的第一子载波不参与交织，该频域资源单元中除第一载波之外的其他子载波仍然参与交织，其中，该第一子载波上映射有参考信号或非共享信道，或该第一子载波为预留资源。
在不同的实施例中，上述三种方式可以单独使用，也可以结合使用。进一步的，发送端装置可以根据非共享信道或参考信号的具体类型等选择合适的交织方式。
示例性的，N2个第一时间单元对应的频域资源单元上映射的参考信号为CSI-RS时，采用上述方式二或方式三进行交织。或者，在一次交织中，第一时间单元x1对应的频域资源单元(x1，y1)上映射PTRS1，第一时间单元x2对应的频域资源单元(x2，y2)上映射PTRS2，若采用方式一的交织规则交织后，第一时间单元x1对应的频域资源单元(x1，y1)上映射PTRS2，第一时间单元x2对应的频域资源单元(x2，y2)上映射PTRS1，则此次交织采用方式一，此时，从整体来看，PTRS的位置不变。
基于该方案，通过交织将交织前在同一时间单元对应的频域资源单元上传输的调制符号， 调整为在多个时间单元对应的频域资源单元上传输，从而实现一个码块在多个时间单元上传输，平均不同码块上残余相噪的等效SNR或SIR，提升码块经历的等效信道在时域上的多样性，进而提升频谱效率。
下面，对本申请中第二交织组包括的第一时间单元的数量N2、交织后得到的子调制符号序列中各个第一时间单元对应的频域资源单元的数量M2的取值进行说明。
首先，对于第二交织组包括的第一时间单元的数量N2：
在一些实施例中，N2是根据以下一项或多项确定的：残余相噪、子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、PTRS的数量。
对于交织后得到的子调制符号序列中各个第一时间单元对应的频域资源单元的数量M2：
在一些实施例中，M2是根据一个时间单元上传输的码块数Q2确定的。在频域资源单元为RE的情况下，示例性的：
Q2大于或等于第五阈值时，M2满足如下公式：
Figure PCTCN2020141872-appb-000010
Q2小于或等于第六阈值时，M2满足如下公式：
Figure PCTCN2020141872-appb-000011
其中，N RB为资源块RB总数，T为每个RB包括的资源元素RE的个数，int(Q2)表示对Q2取整，f(A,B)表示A和B的最小公倍数，S为大于或等于2的正整数。第五阈值例如可以为1，第六阈值例如可以为0.5。
在一些实施例中，该步骤S1902后，发送端装置还可以按照S1902中的方法对P2个交织组中除第二交织组外的其他交织组进行交织，可参考S1902的相关描述，在此不再赘述。
发送端装置完成对第二交织组的交织后，可以执行下述步骤S1903。
S1903、发送端装置发送N2个时间单元。相应的，接收端装置获取该N2个时间单元。
在一些实施例中，发送端装置发送N2个时间单元，可以理解为：发送端装置发送N2个时间单元对应的多个子调制符号序列。相应的，接收端装置获取该N2个时间单元对应的多个子调制符号序列。
可以理解的是，接收端装置获取到的N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列。
S1904、接收端装置对N2个第二时间单元进行解交织，得到N2个第一时间单元。
其中，该第一时间单元对应的频域资源单元上承载调制符号序列，该调制符号序列包括至少两个第二时间单元分别对应的至少M2个频域资源单元上的数据调制符号，该至少M2个频域资源单元上的数据调制符号属于子调制符号序列，K2、M2为正整数。
在一些实施例中，接收端装置对N2个第二时间单元进行解交织，可以包括：接收端装置根据以下一项或多项对N2个第二时间单元进行解交织：第二交织组包括的时间单元的个数N2、频域资源单元块包括的频域资源单元的个数M2、或者，子调制符号序列对应的第二顺序。
示例性的，接收端装置根据N2确定解交织的第二时间单元的个数，之后，取出至少两个第二时间单元分别对应的M2个频域资源单元上的数据调制符号，根据第二顺序组成第一时间单元对应的频域资源上承载的调制符号序列。
示例性的，基于图20所示的示例，接收端装置对N2个第二时间单元解交织后，第一时 间单元0上承载的调制符号序列包括：第二时间单元0、第二时间单元1、第二时间单元2分别对应的2个频域资源单元块上的数据调制符号，且每个第二时间单元对应的1个频域资源单元块上的数据调制符号属于一个子调制符号序列。
在一些实施例中，上述用于接收端装置解交织的参数可以是协议预定义的。或者，可以是发送端装置发送给接收端装置的，本申请对此不做具体限定。
在一些实施例中，接收端装置得到N2个第一时间单元对应的频域资源单元上承载的调制符号序列后，可以根据该调制符号序列进行业务处理，本申请对此不作具体限定。
至此，基于本申请的交织、解交织方法，在发送端，将交织前在同一时间单元对应的频域资源单元上传输的调制符号，调整为在多个时间单元对应的频域资源单元上传输，从而实现一个码块在多个时间单元上传输，平均不同码块上残余相噪的等效SNR或SIR，提升码块经历的等效信道在时域上的多样性，在接收端，进行相应解交织，进而提升频谱效率。
上述实施例提供了交织和解交织方法以平均不同码块上残余相噪的等效SNR或SIR，提升频谱效率。此外，本申请还提供一种映射和解映射方法，用于提升频谱效率。示例性的如图2所示，该映射方法可以用于时频资源映射，解映射方法可以用于时频资源解映射。
以图6所示的发送端装置和接收端装置进行交互为例，如图25所示，由发送端装置执行的方法为映射方法，由接收端装置执行的方法为解映射方法，具体包括如下步骤：
S2501、发送端装置确定第一调制符号序列。
其中，该第一调制符号序列包括至少一个码块的调制符号。可以理解的，第一调制符号序列包括的调制符号为数据调制符号。
S2502、发送端装置将第一调制符号序列映射至N3个时间单元对应的多个子载波，N3为大于1的正整数。
在不同的实施例中，发送端装置可以采用多种方式将第一调制符号序列映射至N3个时间单元对应的多个子载波：
在一种可能的实现方式中，发送端装置可以按照先时域后频域的顺序将第一调制符号序列映射至N3个时间单元对应的多个子载波。具体的，对于第一子载波k，发送端装置首先按照N3个时间单元的先后顺序在N3个时间单元对应的第一子载波k上进行映射，在该第一子载波k对应的映射完成后，对于第一子载波k的下一个子载波k+1，发送端装置同样按照N3个时间单元的先后顺序在N3个时间单元对应的子载波k+1上进行映射，以此类推。其中，第一子载波k为N3个时间单元对应的多个子载波中的一个。
示例性的，假设时域上的一个时间单元，频域上的一个子载波组成一个时频资源栅格，如图26所示，以一个矩形表示一个时频资源栅格，记为RG n,m，第一个下标n为时间单元索引，第二个下标m为子载波索引，N3等于4，M3等于6，第一子载波为子载波1为例，发送端装置进行映射时的映射顺序可以为：RG 1,1，RG 2,1，RG 3,1，RG 4,1。之后，发送端装置按照RG 1,2，RG 2,2，RG 3,2，RG 4,2的顺序进行映射，以此类推。
可以理解的，在该可能的实现方式中，对于该N3个时间单元中的第一时间单元和第二时间单元，若第一时间单元对应的第一子载波和第二时间单元对应的第一子载波均为有效子载波，第一时间单元和第二时间单元为N3个时间单元中相邻的时间单元时，在第一调制符号序列中，第一时间单元对应的第一子载波上映射的第一调制符号和第二时间单元对应的第一子载波上映射的第二调制符号相邻。其中，有效子载波指用于映射数据调制符号的子载波。
另一种可能的实现方式中，发送端装置可以先将N3个时间单元划分为多个时间单元组，对于第一时间单元组的第一子载波k，按照该第一时间单元组内时间单元的先后顺序，依次 在该第一时间单元组内的时间单元对应的第一子载波k上进行映射。之后，对于第一时间单元组的子载波k+1，按照该第一时间单元组内时间单元的先后顺序，依次在该第一时间单元组内的时间单元对应的子载波k+1上进行映射，以此类推，直至完成第一时间单元组对应的多个子载波上的映射。接下来，在第二时间单元组中按照与第一时间单元组相同的顺序进行映射，以此类推。
作为一种示例，每个时间单元组中至少存在两个相邻的时间单元在该N3个时间单元中不连续。示例性的，基于图26所示的时间单元，发送端装置可以将时间单元1至4划分为两个时间单元组，其中，第一时间单元组包括时间单元1和时间单元3，第二时间单元组包括时间单元2和时间单元4，之后，发送端装置以时间单元组为单位，在时间单元组内按照先时域后频域的顺序进行映射，例如：
第一时间单元组对应的映射顺序为：RG 1,1,RG 3,1,RG 1,2,RG 3,2,...,RG 1,6,RG 3,6；
第二时间单元组对应的映射顺序为RG 2,1,RG 4,1,RG 2,2,RG 4,2,...,RG 2,6,RG 4,6。
可以理解的，在该可能的实现方式中，对于该N3个时间单元中的第一时间单元和第二时间单元，若第一时间单元对应的第一子载波和第二时间单元对应的第一子载波均为有效子载波，第一时间单元和第二时间单元为时间单元组中相邻的时间单元时，在第一调制符号序列中，第一时间单元对应的第一子载波上映射的第一调制符号和第二时间单元对应的第一子载波上映射的第二调制符号相邻。
作为一种示例，在上述两种可能的实现方式中，N3个时间单元对应的多个子载波可以按照频率递增的顺序排列，此时，第一子载波k对应的频率低于子载波k+1对应的频率；或者，N3个时间单元对应的多个子载波可以按照频率递减的顺序排列，此时，第一子载波k对应的频率高于子载波k+1对应的频率。
作为一种示例，以该N3个时间单元中的第一时间单元和第二时间单元为例，对于第一种实现方式，在N3个时间单元中，第一时间单元和第二时间单元之间间隔一个或多个第三时间单元，或者，对于第二种实现方式，在时间单元组内，第一时间单元和第二时间单元之间间隔一个或多个第三时间单元。假设一个或多个第三时间单元对应的第一子载波用于映射参考信号和/或非共享信道，或者，第三时间单元对应的第一子载波为预留资源，待映射的第一个调制符号为第一时间单元对应的第一子载波上映射的第一调制符号的下一个调制符号，则发送端装置在映射时采用如下两种方式进行处理：
方式一、发送端装置将待映射的第一个调制符号映射至第二时间单元对应的第一子载波。
也就是说，若第一时间单元后的一个或多个第三时间单元对应的第一子载波用于映射参考信号和/或非共享信道，或者，该第一时间单元后的一个或多个第三时间单元对应的第一子载波为预留资源，发送端装置将待映射的第一个调制符号映射至第一时间单元后的第R+1个时间单元对应的第一子载波上，R为第一时间单元和第二时间单元之间间隔的第三时间单元的个数，即第一时间单元后的第R+1个时间单元为第二时间单元。
示例性的，如图27所示，以第一时间单元为时间单元1，第二时间单元为时间单元3，第一时间单元和第二时间单元之间间隔的一个第三时间单元为时间单元2为例，假设时间单元2对应的第一个子载波，即时频资源栅格RG 2,1，用于映射参考信号和/或非共享信道，或者为预留资源，待映射的第一个调制符号为q n1，则发送端装置将q n1映射至时间单元3对应的第一个子载波上，即时频资源栅格RG 3,1。
可以理解的，发送端采用该方式一进行处理时，第一时间单元对应的第一子载波上映射的第一调制符号与第二时间单元对应的第一子载波上映射的第二调制符号在第一调制符号序 列中相邻。
方式二、发送端装置将待映射的第R+1个调制符号映射至第二时间单元对应的第一子载波。
也就是说，若第一时间单元后的一个或多个第三时间单元对应的第一子载波用于映射参考信号和/或非共享信道，或者，该第一时间单元后的一个或多个第三时间单元对应的第一子载波为预留资源，发送端装置将待映射的第R+1个调制符号映射至第一时间单元后的第R+1个时间单元对应的第一子载波上，该第一时间单元后的第R+1个时间单元即为第二时间单元。此时，待映射的第一个调制符号至待映射的第R个调制符号未被映射至时频资源上，或者说，待映射的第一个调制符号至待映射的第R个调制符号用0替代。或者说，待映射的第一个调制符号至待映射的第R个调制符号分别映射至第一时间单元后的第一个时间单元至第R个时间单元对应的第一子载波上，然后被参考信号和/或非共享信道上的传输信号覆盖，即发送端装置在第一时间单元后的第一个时间单元至第R个时间单元对应的第一子载波上进行了重写或重新映射，相当于发送端装置丢弃待映射的第一个调制符号至待映射的第R个调制符号。
示例性的，如图28所示，以第一时间单元为时间单元1，第二时间单元为时间单元3，第一时间单元和第二时间单元之间间隔的一个第三时间单元为时间单元2为例，假设时间单元2对应的第一个子载波，即时频资源栅格RG 2,1，用于映射参考信号和/或非共享信道，或者为预留资源，待映射的第一个调制符号为q n1，待映射的第二个调制符号为q n2，则发送端装置将q n2映射至时间单元3对应的第一个子载波上，即时频资源栅格RG 3,1，q n1被丢弃。
可以理解的，发送端采用该方式二进行处理时，在第一调制符号序列中，第一时间单元对应的第一子载波上映射的第一调制符号与第二时间单元对应的第一子载波上映射的第二调制符号之间间隔R个调制符号。
在一些实施例中，上述方式一和方式二可以单独使用，也可以结合使用。进一步的，发送端装置可以对不同参考信号采用不同的方式进行处理，例如，时间单元对应的某个子载波用于映射零功率(zero-power，ZP)参考信号或为预留资源时采用方式一处理，用于映射非零功率(non-zero power，NZP)参考信号时采用方式二处理；或者，时间单元对应的某个子载波用于映射资源占用开销较大的参考信号时采用方式一进行处理，用于映射资源占用开销较小的参考信号时采用方式二进行处理。
S2503、发送端装置发送映射在N3个时间单元对应的多个子载波上的第一调制符号序列。相应的，接收端装置接收N3个时间单元对应的多个子载波上映射的调制符号。
在一些实施例中，在该步骤S2503之前，接收端装置还确定该N3个时间单元对应的多个子载波，以确定接收调制符号的时频资源。
S2504、接收端装置对N3个时间单元对应的多个子载波上映射的调制符号进行解映射，得到第一调制符号序列。
作为一种示例，接收端装置可以按照与发送端装置的映射顺序相应的解映射顺序进行解映射。得到第一调制符号序列后，可以继续进行解调、译码等处理，本申请对此不做具体限定。
基于该方案，接收端装置在进行时频资源映射时按照先时域后频域的顺序进行映射，从而将同一码块的调制符号映射至多个时间单元上传输，平均不同码块上残余相噪的等效SNR或SIR，提升码块经历的等效信道在时域上的多样性，在接收端，进行相应解映射，进而提升频谱效率。
除图25所示的映射和解映射方法外，本申请还提供另一种映射和解映射方法，以图6所 示的发送端装置和接收端装置进行交互为例，如图29所示，由发送端装置执行的方法为映射方法，由接收端装置执行的方法为解映射方法，具体包括如下步骤：
S2901、发送端装置确定第二调制符号序列。
其中，该第二调制符号序列包括至少一个码块的调制符号。可以理解的，第一调制符号序列包括的调制符号为数据调制符号。
S2902、发送端装置将第二调制符号序列映射至时频资源块。
其中，该时频资源块包括多个时频资源子块，每个时频资源子块在时域上包括多个时间单元，在频域上包括多个子载波。该多个时频资源子块包括的子载波组成一个子载波集合，该子载波集合是发送端装置在一次传输中可用的全部子载波。至少两个时频资源子块包括的子载波完全不同。
在一些实施例中，不同时频资源子块包括的时间单元的个数和/或子载波的个数可以相同也可以不同。
示例性的，假设该时频资源块包括4个时频资子块，每个时频资源子块包括4个时间单元和6个子载波，一个子载波组成一个时频资源栅格，以一个矩形表示一个时频资源栅格，相同填充图案表示同一个时频资源子块中的时频资源栅格为例，该时频资源块可以如图30a所示，图30a中的子载波即为发送端装置在一次传输中可用的全部子载波。其中，每个时频资源子块中的时频资源栅格独立编号，记为RG_N n,m，N表示时频资源子块的索引，第一个下标n为时间单元在时频资源子块N中的索引，第二个下标m为子载波在时频资源子块N中的索引。
在一些实施例中，第一时频资源子块包括的多个时间单元在整个时频资源块包括的全部时间单元中可以是不连续的。示例性的，以时频资源块包括时间单元1至8共8个时间单元，第一时频资源子块包括4个时间单元为例，如图30b所示，第一时频资源子块包括的4个时间单元可以为时频资源块包括的时间单元1、时间单元2、时间单元5、时间单元6。或者，第一时频资源子块包括的4个时间单元可以为时频资源块包括的时间单元1、时间单元3、时间单元5、时间单元7。
在一些实施例中，发送端装置将第二调制符号序列映射至时频资源块，可以包括：发送端装置以时频资源子块为单位将第二调制符号序列映射至时频资源块。在第一时频资源子块中，发送端装置按照先频域后时域的顺序进行映射。具体的，对于第一时频资源子块中的第四时间单元，发送端装置首先按照第一时频资源子块包括的多个子载波的排列顺序在该第四时间单元对应的多个子载波上进行映射，在该第四时间单元对应的映射完成后，对于第一时频资源子块中第四时间单元的下一个时间单元(记为第五时间单元)，发送端装置同样按照第一时频资源子块包括的多个子载波的排列顺序在第五时间单元对应的多个子载波上进行映射，依次类推。
示例性的，如图30a所示，以第一时频资源子块为时频资源子块1，第四时间单元为时频资源子块1中的时间单元1，则发送端装置按照RG_1 1,1，RG_1 1,2，,...,RG_1 1,6的顺序进行映射，M为第一时频资源子块包括的子载波的个数，之后，对于时频资源子块1中的时间单元2(即第五时间单元)，发送端装置按照RG_1 2,1，RG_1 2,2，,...,RG_1 2,6的顺序进行映射，以此类推，直至时频资源子块1包括的有效子载波上都映射有调制符号。
接下来，若多个时频资源子块中存在一个时频资源子块a与第一时频资源子块包括相同的子载波，还存在另一个时频资源子块b与第一时频资源子块包括相同的时间单元，发送端装置优先在与第一时频资源子块包括相同时间单元的时频资源子块b中按照与第一时频资源 子块相同的映射顺序进行映射，最后在与第一时频资源包括相同子载波的时频资源子块a中按照与第一时频资源子块相同的映射顺序进行映射。
示例性的，基于图30a所示的示例，以第一时频资源子块为时频资源子块1为例，时频资源子块2与时频资源子块1包括相同的时间单元，时频资源子块3与时频资源子块1包括相同的子载波，时频资源子块4与时频资源子块3包括相同的时间单元。发送端装置进行映射的时频资源子块的顺序为：时频资源子块1→时频资源子块2→时频资源子块3→时频资源子块4，每个时频资源子块中按照先频域后时域的顺序进行映射。
或者，接下来，若多个时频资源子块中不存在与第一时频资源子块包括相同子载波的时频资源子块，存在与第一时频资源子块包括相同时间单元的时频资源子块，发送端装置在与第一时频资源包括相同时间单元的时频资源子块中按照与第一时频资源子块相同的映射顺序进行映射。
可以理解的是，按照上述映射方法，对于第一时频资源子块包括的多个子载波中的第二子载波和第三子载波，若第四时间单元对应的第二子载波和第四时间单元对应的第三子载波均为有效子载波，第二子载波和第三子载波在第一时频资源子块包括的多个子载波中相邻时，在第二调制符号序列中，第四时间单元对应的第二子载波上映射的第三调制符号与第四时间单元对应的第三子载波上映射的第四调制符号相邻。
在一些实施例中，以第一时频资源子块包括的第四时间单元对应的第二子载波和第三子载波为例，假设该第二子载波和第三子载波之间间隔一个或多个第四子载波，第四时间单元对应的该一个或多个第四子载波用于映射参考信号和/或非共享信道，或者，第四时间单元对应的该一个或多个第四子载波为预留资源，待映射的第一个调制符号为第四时间单元对应的第二子载波上映射的第三调制符号的下一个调制符号，则发送端装置在映射时采用如下两种方式进行处理：
方式一：发送端装置将待映射的第一个调制符号映射至第四时间单元对应的第三子载波。
也就是说，若第四时间单元对应的第四子载波用于映射参考信号和/或非共享信道，或者，该第四时间单元对应的第四子载波为预留资源，发送端装置将待映射的第一个调制符号映射至该第四时间单元对应的第二子载波后的第R+1个子载波上，R为第二子载波和第三子载波之间间隔的第四子载波的个数，即第二子载波后的第R+1个子载波为第三子载波。
可以理解的，发送端采用该方式一进行处理时，第四时间单元对应的第二子载波上映射的第三调制符号与第四时间单元对应的第三子载波上映射的第四调制符号在第二调制符号序列中相邻。
方式二、发送端装置将待映射的第R+1个调制符号映射至第四时间单元对应的第三子载波。
也就是说，若第四时间单元对应的第四子载波用于映射参考信号和/或非共享信道，或者，该第四时间单元对应的第四子载波为预留资源，发送端装置将待映射的第R+1个调制符号映射至该第四时间单元的对应的第二子载波后的第R+1个子载波上，即第二子载波后的第R+1个子载波即为第三子载波。此时，待映射的第一个调制符号至待映射的第R个调制符号未被映射至时频资源上，或者说，待映射的第一个调制符号至待映射的第R个调制符号用0替代，或者说，待映射的第一个调制符号至待映射的第R个调制符号分别映射至第四时间单元对应的第二子载波后的第一个子载波至第R个子载波上，然后被参考信号和/或非共享信道上的传输信号覆盖，即发送端装置在第四时间单元对应的第二子载波后的第一个子载波至第R个子载波上进行了重写或重新映射。相当于发送端装置丢弃待映射的第一个调制符号至待映射的 第R个调制符号。
可以理解的，发送端采用该方式二进行处理时，在第二调制符号序列中，第四时间单元对应的第二子载波上映射的第三调制符号与第四时间单元对应的第三子载波上映射的第四调制符号之间间隔R个调制符号。
在一些实施例中，假设第二时频资源子块和第一时频资源子块包括相同的时间单元，若第一时频资源子块包括的最后一个时间单元对应的最后m1个子载波用于映射参考信号和/或非共享信道，或者为预留资源，和/或，第二时频资源子块包括的第一个时间单元对应的前m2个子载波用于用上参考信号和/或非共享信道中的一项或多项，或者为预留资源，发送端装置可以采用与方式一或方式二类似的方法进行处理。
也就是说，第一时频资源子块上映射的最后一个调制符号与第二时频资源子块上映射的第一个调制符号在第二调制符号序列中相邻，或者，在第二调制符号序列中，第一时频资源子块上映射的最后一个调制符号与第二时频资源子块上映射的第一个调制符号之间间隔一个或多个调制符号。
可以理解的，在第一时频资源子块包括的最后一个时间单元对应的最后一个子载波为有效子载波，且第二时频资源子块包括的第一个时间单元对应的第一个子载波为有效子载波时，第一时频资源子块上映射的最后一个调制符号与第二时频资源子块上映射的第一个调制符号在第二调制符号序列中相邻。
在一些实施例中，在时间单元t对应的前m3个子载波，和/或，后m4个子载波用于映射参考信号和/或非共享信道中的一项或多项，或者为预留资源时，发送端装置也可以采用与方式一或方式二类似的方法进行处理。
S2903、发送端装置发送映射在时频资源块上的第二调制符号序列。相应的，接收端装置接收该时频资源块上映射的调制符号。
在一些实施例中，在该步骤S2903之前，接收端装置还确定该时频资源块的位置，以确定接收调制符号的时频资源。
S2904、接收端装置对该时频资源块上映射的调制符号进行解映射，得到第二调制符号序列。
作为一种示例，接收端装置可以按照与发送端装置的映射顺序相应的解映射顺序进行解映射。得到第二调制符号序列后，可以继续进行解调、译码等处理，本申请对此不做具体限定。
基于该方案，接收端装置在进行时频资源映射时以时频资源子块为单位，在某个时频资源子块映射完成后，优先对与在时频资源子块包括相同子载波的时频资源子块上进行映射，即以时频资源子块为单位，在时频资源子块间按照先时域后频域的顺序进行映射，从而可能将同一码块的调制符号映射至多个时间单元上传输，平均不同码块上残余相噪的等效SNR或SIR，提升码块经历的等效信道在时域上的多样性，在接收端，进行相应解映射，进而提升频谱效率。
其中，上述图10或图19或图25或图29所示的实施例中，发送端装置或接收端装置的动作可以由图7所示的通信设备300中的处理器301调用存储器303中存储的应用程序代码以指令发送端装置或接收端装置执行。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
可以理解的是，以上各个实施例中，由发送端装置实现的方法和/或步骤，也可以由可用于发送端装置的部件(例如芯片或者电路)实现，由接收端装置实现的方法和/或步骤，也可以由可用于接收端装置的部件(例如芯片或者电路)实现。
上述主要从各个设备之间交互的角度对本申请提供的方案进行了介绍。相应的，本申请还提供了通信装置，该通信装置用于实现上述各种方法。该通信装置可以为上述方法实施例中的发送端装置，或者包含上述发送端装置的装置，或者为可用于发送端装置的部件；或者，该通信装置可以为上述方法实施例中的接收端装置，或者包含上述接收端装置的装置，或者为可用于接收端装置的部件。可以理解的是，该通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法实施例对通信装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
比如，以通信装置为上述方法实施例中的发送端装置为例。图31示出了一种发送端装置310的结构示意图。该发送端装置310包括确定模块3101和交织模块3102。该确定模块3101和交织模块3102可以统称为处理模块。
在一些实施例中，发送端装置310还可以包括收发模块3103和存储模块3104(图31中未示出)。收发模块3103，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由发送端装置执行的接收和发送类的步骤；存储模块3104用于存储数据和/或指令。
作为一种示例，收发模块3103，也可以称为收发单元用以实现发送和/或接收功能，其可以是收发电路，收发机，收发器或者通信接口。
在一种可能的实现方式中：
确定模块3101，用于确定第一交织组，第一交织组包括N1个数据块，数据块包括至少两个数据单元，N1个数据块对应多个码块，N1为大于1的正整数；交织模块3102，用于对第一交织组进行交织，得到交织后的数据单元序列，数据单元序列包括多个子数据单元序列，子数据单元序列包括K1个数据块中每个数据块的M1个数据单元，K1为小于或等于N1的正整数，M1为正整数。
作为一种示例，确定模块3101，用于确定第一交织组，包括：确定模块，用于将N CB个数据块划分为P1个交织组，第一交织组为P1个交织组中的一个，N CB为一个传输单元内传输的数据块的总数，传输单元包括至少两个时间单元，P1个交织组满足以下一项或多项：
P1个交织组中不同交织组所包括的数据块的个数相同；
P1个交织组中一部分交织组所包括的数据块的个数为第一数值，另一部分交织组所包括的数据块的个数为第二数值；
P1个交织组中不同交织组所包括的数据块的个数不同；
P1个交织组中不同交织组所包括的数据块的个数不同，且递增或递减；
P1个交织组中各个交织组包括的数据块个数中，最大值与最小值之差小于或等于第一阈 值。
在另一种可能的实现方式中：
确定模块3101，用于确定第二交织组，第二交织组包括N2个第一时间单元，第一时间单元对应的频域上包括至少两个频域资源单元，频域资源单元上映射有调制符号，N2为大于1的正整数；交织模块，用于对第二交织组进行交织，得到N2个第二时间单元，N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，子调制符号序列包括N2个第一时间单元中至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号，K2、M2为正整数。
作为一种示例，确定模块3101，用于确定第二交织组，包括：确定模块3101，用于将N sym个时间单元划分为P2个交织组，第二交织组为P2个交织组中的一个，N sym为一个传输单元内包括的时间单元的总数，P2个交织组满足以下一项或多项：
P2个交织组中不同交织组所包括的时间单元的个数相同；
P2个交织组中一部分交织组所包括的时间单元的个数为第一数值，另一部分交织组所包括的时间单元的个数为第二数值；
P2个交织组中不同交织组所包括的时间单元的个数不同；
P2个交织组中不同交织组所包括的时间单元的个数不同，且递增或递减；
P2个交织组中各个交织组包括的时间单元的个数中，最大值与最小值之差小于或等于第四阈值。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该发送端装置310以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该发送端装置310可以采用图7所示的通信设备300的形式。
示例性的，图7所示的通信设备300中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得通信设备300执行上述方法实施例中的交织方法。具体的，图31中的确定模块3101和交织模块3102的功能/实现过程可以通过图7所示的通信设备300中的处理器301调用存储器303中存储的计算机执行指令来实现。
由于本实施例提供的发送端装置310可执行上述的交织方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
或者，比如，以通信装置为上述方法实施例中的接收端装置为例。图32示出了一种接收端装置320的结构示意图。该接收端装置320包括获取模块3201和解交织模块3202。该获取模块3201和解交织模块3202可以统称为处理模块。
在一些实施例中，接收端装置320还可以包括收发模块3203和存储模块3204(图32中未示出)。收发模块3203，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由接收端装置执行的接收和发送类的步骤；存储模块3204用于存储数据和/或指令。
作为一种示例，收发模块3203，也可以称为收发单元用以实现发送和/或接收功能，例如可以其可以是收发电路，收发机，收发器或者通信接口。
在一种可能的实现方式中：
获取模块3201，用于获取交织后的数据单元序列，数据单元序列包括L个子数据单元序列，数据单元序列中的数据单元对应多个码块，L为大于1的正整数；解交织模块3202，用 于对数据单元序列进行解交织，得到N1个数据块，数据块包括H1个子数据单元序列中每个子数据单元序列的M1个数据单元，N1为大于1的正整数，H1为小于或等于L的正整数，M1为正整数。
作为一种示例，解交织模块3202，用于对数据单元序列进行解交织，包括：解交织模块3202，用于根据以下一项或多项对数据单元序列进行解交织：N1个数据块中每个数据块的长度、L个子数据单元序列中每个子数据单元序列的长度、或者每个子数据单元序列中数据单元块的排列顺序，数据单元块包括M1个数据单元。
在另一种可能的实现方式中：
获取模块3201，用于获取N2个第二时间单元，N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，N2为大于1的正整数；解交织模块3202，用于对N2个第二时间单元进行解交织，得到N2个第一时间单元，第一时间单元对应的频域资源单元上承载调制符号序列，调制符号序列包括至少两个第二时间单元分别对应的至少M2个频域资源单元上的数据调制符号，至少M2个频域资源单元上的数据调制符号属于子调制符号序列，K2、M2为正整数。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该接收端装置320以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该接收端装置320可以采用图7所示的通信设备300的形式。
示例性的，图7所示的通信设备300中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得通信设备300执行上述方法实施例中的解交织方法。具体的，图32中的获取模块3201和解交织模块3202的功能/实现过程可以通过图7所示的通信设备300中的处理器301调用存储器303中存储的计算机执行指令来实现。
由于本实施例提供的接收端装置320可执行上述的解交织方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
以通信装置为上述方法实施例中的发送端装置为例。图33示出了另一种发送端装置330的结构示意图。该发送端装置330包括确定模块3301和映射模块3302。该确定模块3301和映射模块3302可以统称为处理模块。
在一些实施例中，还可以包括收发模块3303和存储模块3304(图33中未示出)。收发模块3303，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由发送端装置执行的接收和发送类的步骤；存储模块3304用于存储数据和/或指令。
作为一种示例，收发模块3303，也可以称为收发单元用以实现发送和/或接收功能，其可以是收发电路，收发机，收发器或者通信接口。
在一种可能的实现方式中：
确定模块3301，用于确定第一调制符号序列，第一调制符号序列包括至少一个码块的调制符号；映射模块3302，用于将第一调制符号序列映射至N3个时间单元对应的多个子载波，其中，第一时间单元对应的第一子载波上映射的第一调制符号与第二时间单元对应的第一子载波上映射的第二调制符号在第一调制符号序列中相邻或间隔至少一个调制符号，第一时间单元与第二时间单元为N3个时间单元中的两个时间单元，N3为大于1的正整数。
在另一种可能的实现方式中：
确定模块3301，用于确定第二调制符号序列，第二调制符号序列包括至少一个码块的调制符号；映射模块3302，用于将第二调制符号序列映射至时频资源块，时频资源块包括多个时频资源子块，时频资源子块在时域上包括多个时间单元，在频域上包括多个子载波，第一时频资源子块中的第四时间单元对应的第二子载波上映射的第三调制符号与第四时间单元对应的第三子载波上映射的第四调制符号在第二调制符号序列中相邻或间隔至少一个调制符号，第一时频资源子块上映射的最后一个调制符号与第二时频资源子块上映射的第一个调制符号在第二调制符号序列中相邻或间隔至少一个调制符号，第二时频资源子块和第一时频资源子块包括相同的时间单元。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该发送端装置330以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该发送端装置330可以采用图7所示的通信设备300的形式。
示例性的，图7所示的通信设备300中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得通信设备300执行上述方法实施例中的映射方法。具体的，图33中的确定模块3301和映射模块3302的功能/实现过程可以通过图7所示的通信设备300中的处理器301调用存储器303中存储的计算机执行指令来实现。
由于本实施例提供的发送端装置330可执行上述的映射方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
或者，以通信装置为上述方法实施例中的接收端装置为例。图34示出了一种接收端装置340的结构示意图。该接收端装置340包括收发模块3401和解映射模块3402。该映射模块3402也可以称为处理模块。
在一些实施例中，还可以包括存储模块3404(图34中未示出)。收发模块3401，可以包括接收模块和发送模块，分别用于执行上述方法实施例中由接收端装置执行的接收和发送类的步骤；存储模块3404用于存储数据和/或指令。
作为一种示例，收发模块3404，也可以称为收发单元用以实现发送和/或接收功能，例如可以其可以是收发电路，收发机，收发器或者通信接口。
在一种可能的实现方式中：
收发模块3401，用于接收N3个时间单元对应的多个子载波上映射的调制符号，N3为大于1的正整数。解映射模块3402，用于对N3个时间单元对应的多个子载波上映射的调制符号进行解映射，得到第一调制符号序列，其中，第一时间单元对应的第一子载波上映射的第一调制符号与第二时间单元对应的第一子载波上映射的第二调制符号在第一调制符号序列中相邻或间隔至少一个调制符号，第一时间单元与第二时间单元为N3个时间单元中的两个时间单元。
在另一种可能的实现方式中：
收发模块3401，用于接收时频资源块上映射的调制符号，时频资源块包括多个时频资源子块，时频资源子块在时域上包括多个时间单元，在频域上包括多个子载波；解映射模块3402，用于对时频资源块上映射的调制符号进行解映射，得到第二调制符号序列，第一时频资源子块中的第四时间单元对应的第二子载波上映射的第三调制符号与第四时间单元对应的第四子载波上映射的第四调制符号在第二调制符号序列中相邻或间隔至少一个调制符号，第一时频 资源子块上映射的第三调制符号与第二时频资源子块上映射的第四调制符号在第二调制符号序列中相邻或间隔一个调制符号，第二时频资源子块和第一时频资源子块包括相同的时间单元。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该接收端装置340以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该接收端装置340可以采用图7所示的通信设备300的形式。
示例性的，图7所示的通信设备300中的处理器301可以通过调用存储器303中存储的计算机执行指令，使得通信设备300执行上述方法实施例中的解映射方法。
具体的，图34中的收发模块3401和解映射模块3402的功能/实现过程可以通过图7所示的通信设备300中的处理器301调用存储器303中存储的计算机执行指令来实现。或者，图34中的解映射模块3402的功能/实现过程可以通过图7所示的通信设备300中的处理器301调用存储器303中存储的计算机执行指令来实现，图34中的收发模块3401的功能/实现过程可以通过图7所示的通信设备300中的通信接口302来实现。
由于本实施例提供的接收端装置340可执行上述的解映射方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
本申请实施例还提供了一种通信装置，该通信装置包括处理器，用于实现上述任一方法实施例中的方法。
在一种可能的设计中，该通信装置还包括存储器。该存储器，用于保存必要的程序指令和数据，处理器可以调用存储器中存储的程序代码以指令该通信装置执行上述任一方法实施例中的方法。当然，存储器也可以不在该通信装置中。
在另一种可能的设计中，该通信装置还包括接口电路，该接口电路为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器。
在一些实施例中，该通信装置可以是芯片(例如基带芯片)或芯片系统，该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
在上述实施例中，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。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该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计算机程序指令时，全部或部分地产生按照本申请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、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、服务器或者数据中心通过有线(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能够存取的任何可用介质或者是包含一个或多个可以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，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。本申请实施例中,计算机可以包括前面所 述的装置。
可以理解的是，本申请实施例中的一些可选或者说示例性的特征，在某些场景下，可以不依赖于其他特征，比如其当前所基于的方案，而独立实施，解决相应的技术问题，达到相应的效果，也可以在某些场景下，依据需求与其他特征进行结合。相应的，本申请实施例中给出的装置也可以相应的实现这些特征或功能，在此不予赘述。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (56)

  1. 一种交织方法，其特征在于，所述方法包括：
    确定第一交织组，所述第一交织组包括N1个数据块，所述数据块包括至少两个数据单元，所述N1个数据块对应多个码块，N1为大于1的正整数；
    对所述第一交织组进行交织，得到交织后的数据单元序列，所述数据单元序列包括多个子数据单元序列，所述子数据单元序列包括K1个数据块中每个数据块的M1个数据单元，K1为小于或等于N1的正整数，M1为正整数。
  2. 根据权利要求1所述的方法，其特征在于，所述数据块为码块或比特块，所述数据单元为比特；
    或者，所述数据块为调制符号块，所述数据单元为调制符号。
  3. 根据权利要求1或2所述的方法，其特征在于，所述K1个数据块中每个数据块的M1个数据单元按照第一顺序排列，至少两个所述子数据单元对应的所述第一顺序不同。
  4. 根据权利要求1或2所述的方法，其特征在于，所述多个子数据单元中的每个子数据单元对应的第一顺序相同、所述第一顺序为所述K1个数据块的排列顺序、且所述N1个数据块的长度C相等时，所述交织后的数据单元序列满足如下公式：
    Figure PCTCN2020141872-appb-100001
    其中，b为交织前所述N1个数据块的数据单元序列，floor表示向下取整，mod表示取模运算，i＝0,1,...,N1×C-1。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述确定第一交织组，包括：
    将N CB个数据块划分为P1个交织组，所述第一交织组为所述P1个交织组中的一个，N CB为一个传输单元内传输的数据块的总数，所述传输单元包括至少两个时间单元，所述P1个交织组满足以下一项或多项：
    所述P1个交织组中不同交织组所包括的数据块的个数相同；
    所述P1个交织组中一部分交织组所包括的数据块的个数为第一数值，另一部分交织组所包括的数据块的个数为第二数值；
    所述P1个交织组中不同交织组所包括的数据块的个数不同；
    所述P1个交织组中不同交织组所包括的数据块的个数不同，且递增或递减；
    所述P1个交织组中各个交织组包括的数据块个数中，最大值与最小值之差小于或等于第一阈值。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述N1是根据以下一项或多项确定的：
    调度带宽、调制编码方式MCS、残余相噪、子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、相位追踪参考信号PTRS的数量、一个时间单元上传输的数据块的数量Q。
  7. 根据权利要求6所述的方法，其特征在于，所述N1是根据所述调度带宽确定的，且所述N1与所述调度带宽正相关；
    或者，所述N1是根据所述MCS确定的，且所述N1与所述MCS正相关；
    或者，所述N1是根据所述残余相噪确定的，且所述N1与所述残余相噪等效的信噪比SNR负相关。
  8. 根据权利要求6所述的方法，其特征在于，所述N1是根据一个时间单元上传输的数据块的数量Q确定的；
    所述Q大于或等于第二阈值时，所述N1满足：N1＝S×int(Q)，S为大于或等于2的正整数，int(Q)表示对Q取整；
    所述Q小于所述第二阈值，且大于或等于第三阈值时，所述N1为第三数值，所述第三数值大于或等于2。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述N1个数据块不连续。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，所述数据块包括的数据单元的个数为所述M1的Z倍，Z为大于1的正整数。
  11. 一种解交织方法，其特征在于，所述方法包括：
    获取交织后的数据单元序列，所述数据单元序列包括L个子数据单元序列，所述数据单元序列中的数据单元对应多个码块，L为大于1的正整数；
    对所述数据单元序列进行解交织，得到N1个数据块，所述数据块包括H1个子数据单元序列中每个子数据单元序列的M1个数据单元，N1为大于1的正整数，H1为小于或等于L的正整数，M1为正整数。
  12. 根据权利要求11所述的方法，其特征在于，所述数据块为码块或比特块，所述数据单元为比特；
    或者，所述数据块为调制符号块，所述数据单元为调制符号。
  13. 根据权利要求11或12所述的方法，其特征在于，对所述数据单元序列进行解交织，包括：
    根据以下一项或多项对所述数据单元序列进行解交织：所述N1个数据块中每个数据块的长度、所述L个子数据单元序列中每个子数据单元序列的长度、或者所述每个子数据单元序列中数据单元块的排列顺序，所述数据单元块包括M1个数据单元。
  14. 根据权利要求11-13任一项所述的方法，其特征在于，所述N1个数据块不连续。
  15. 一种交织方法，其特征在于，所述方法包括：
    确定第二交织组，所述第二交织组包括N2个第一时间单元，所述第一时间单元对应的频域上包括至少两个频域资源单元，所述频域资源单元上映射有调制符号，N2为大于1的正整数；
    对所述第二交织组进行交织，得到N2个第二时间单元，所述N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，所述子调制符号序列包括所述N2个第一时间单元中至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号，K2、M2为正整数。
  16. 根据权利要求15所述的方法，其特征在于，所述至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号按照第二顺序排列，至少两个所述子调制符号序列对应的所述第二顺序不同。
  17. 根据权利要求15或16所述的方法，其特征在于，所述确定第二交织组，包括：
    将N sym个时间单元划分为P2个交织组，所述第二交织组为所述P2个交织组中的一个，N sym为一个传输单元内包括的时间单元的总数，所述P2个交织组满足以下一项或多项：
    所述P2个交织组中不同交织组所包括的时间单元的个数相同；
    所述P2个交织组中一部分交织组所包括的时间单元的个数为第一数值，另一部分交织组所包括的时间单元的个数为第二数值；
    所述P2个交织组中不同交织组所包括的时间单元的个数不同；
    所述P2个交织组中不同交织组所包括的时间单元的个数不同，且递增或递减；
    所述P2个交织组中各个交织组包括的时间单元的个数中，最大值与最小值之差小于或等于第四阈值。
  18. 根据权利要求15-17任一项所述的方法，其特征在于，所述M2是根据一个时间单元上传输的码块数Q2确定的。
  19. 根据权利要求18所述的方法，其特征在于，
    所述Q2大于或等于第五阈值时，所述M2满足以下公式：
    Figure PCTCN2020141872-appb-100002
    所述Q2小于或等于第六阈值时，所述M2满足如下公式：
    Figure PCTCN2020141872-appb-100003
    其中，N RB为资源块RB总数，T为每个RB包括的资源元素RE的个数，int(Q2)表示对Q2取整，f(A,B)表示A和B的最小公倍数，S为大于或等于2的正整数。
  20. 根据权利要求15-19任一项所述的方法，其特征在于，所述第一时间单元对应的频域上包括的至少两个频域资源单元不连续。
  21. 根据权利要求15-20任一项所述的方法，其特征在于，所述N2个第一时间单元不连续。
  22. 根据权利要求15-21任一项所述的方法，其特征在于，所述N2个第一时间单元对应的第一时频资源与所述N2个第二时间单元对应的第一时频资源相同，所述第一时频资源用于映射参考信号和/或非共享信道，或者，所述第一时频资源为预留资源。
  23. 一种解交织方法，其特征在于，所述方法包括：
    获取N2个第二时间单元，所述N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，N2为大于1的正整数；
    对所述N2个第二时间单元进行解交织，得到N2个第一时间单元，所述第一时间单元对应的频域资源单元上承载调制符号序列，所述调制符号序列包括至少两个所述第二时间单元分别对应的至少M2个频域资源单元上的数据调制符号，所述至少M2个频域资源单元上的数据调制符号属于所述子调制符号序列，K2、M2为正整数。
  24. 根据权利要求23所述的方法，其特征在于，所述第一时间单元对应的至少两个频域资源单元不连续。
  25. 根据权利要求23或24所述的方法，其特征在于，所述N2个第一时间单元不连续。
  26. 根据权利要求23-25任一项所述的方法，其特征在于，所述N2个第一时间单元对应的第一时频资源与所述N2个第二时间单元对应的第一时频资源相同，所述第一时频资源用于映射参考信号和/或非共享信道，或者，所述第一时频资源为预留资源。
  27. 一种发送端装置，其特征在于，所述发送端装置包括：确定模块和交织模块；
    所述确定模块，用于确定第一交织组，所述第一交织组包括N1个数据块，所述数据块包括至少两个数据单元，所述N1个数据块对应多个码块，N1为大于1的正整数；
    所述交织模块，用于对所述第一交织组进行交织，得到交织后的数据单元序列，所述数据单元序列包括多个子数据单元序列，所述子数据单元序列包括K1个数据块中每个数据块的M1个数据单元，K1为小于或等于N1的正整数，M1为正整数。
  28. 根据权利要求27所述的发送端装置，其特征在于，为码块或比特块，所述数据单元为比特；
    或者，所述数据块为调制符号块，所述数据单元为调制符号。
  29. 根据权利要求27或28所述的发送端装置，其特征在于，所述K1个数据块中每个数据块的M1个数据单元按照第一顺序排列，至少两个所述子数据单元对应的所述第一顺序不同。
  30. 根据权利要求27或28所述的发送端装置，其特征在于，所述多个子数据单元中的每个子数据单元对应的第一顺序相同、所述第一顺序为所述K1个数据块的排列顺序、且所述N1个数据块的长度C相等时，所述交织后的数据单元序列满足如下公式：
    Figure PCTCN2020141872-appb-100004
    其中，b为交织前所述N1个数据块的数据单元序列，floor表示向下取整，mod表示取模运算，i＝0,1,...,N1×C-1。
  31. 根据权利要求27-30任一项所述的发送端装置，其特征在于，所述确定模块，用于确定第一交织组，包括：
    所述确定模块，用于将N CB个数据块划分为P1个交织组，所述第一交织组为所述P1个交织组中的一个，N CB为一个传输单元内传输的数据块的总数，所述传输单元包括至少两个时间单元，所述P1个交织组满足以下一项或多项：
    所述P1个交织组中不同交织组所包括的数据块的个数相同；
    所述P1个交织组中一部分交织组所包括的数据块的个数为第一数值，另一部分交织组所包括的数据块的个数为第二数值；
    所述P1个交织组中不同交织组所包括的数据块的个数不同；
    所述P1个交织组中不同交织组所包括的数据块的个数不同，且递增或递减；
    所述P1个交织组中各个交织组包括的数据块个数中，最大值与最小值之差小于或等于第一阈值。
  32. 根据权利要求27-31任一项所述的发送端装置，其特征在于，所述N1是根据以下一项或多项确定的：
    调度带宽、调制编码方式MCS、残余相噪、子载波间隔、工作频点、相噪模型、接收机的相噪补偿算法、相位追踪参考信号PTRS的数量、一个时间单元上传输的数据块的数量Q。
  33. 根据权利要求32所述的发送端装置，其特征在于，所述N1是根据所述调度带宽确定的，且所述N1与所述调度带宽正相关；
    或者，所述N1是根据所述MCS确定的，且所述N1与所述MCS正相关；
    或者，所述N1是根据所述残余相噪确定的，且所述N1与所述残余相噪等效的信噪比SNR负相关。
  34. 根据权利要求33所述的发送端装置，其特征在于，所述N1是根据一个时间单元上传输的数据块的数量Q确定的；
    所述Q大于或等于第二阈值时，所述N1满足：N1＝S×int(Q)，S为大于或等于2的正整数，int(Q)表示对Q取整；
    所述Q小于所述第二阈值，且大于或等于第三阈值时，所述N1为第三数值，所述第三数值大于或等于4。
  35. 根据权利要求27-34任一项所述的发送端装置，其特征在于，所述N1个数据块不连续。
  36. 根据权利要求27-35任一项所述的发送端装置，其特征在于，所述数据块包括的数 据单元的个数为所述M1的Z倍，Z为大于1的正整数。
  37. 一种接收端装置，其特征在于，所述接收端装置包括：获取模块和解交织模块；
    所述获取模块，用于获取交织后的数据单元序列，所述数据单元序列包括L个子数据单元序列，所述数据单元序列中的数据单元对应多个码块，L为大于1的正整数；
    所述解交织模块，用于对所述数据单元序列进行解交织，得到N1个数据块，所述数据块包括H1个子数据单元序列中每个子数据单元序列的M1个数据单元，N1为大于1的正整数，H1为小于或等于L的正整数，M1为正整数。
  38. 根据权利要求37所述的接收端装置，其特征在于，所述数据块为码块或比特块，所述数据单元为比特；
    或者，所述数据块为调制符号块，所述数据单元为调制符号。
  39. 根据权利要求37或38所述的接收端装置，其特征在于，所述解交织模块，用于对所述数据单元序列进行解交织，包括：
    所述解交织模块，用于根据以下一项或多项对所述数据单元序列进行解交织：所述N1个数据块中每个数据块的长度、所述L个子数据单元序列中每个子数据单元序列的长度、或者所述每个子数据单元序列中数据单元块的排列顺序，所述数据单元块包括M1个数据单元。
  40. 根据权利要求37-39任一项所述的接收端装置，其特征在于，所述N1个数据块不连续。
  41. 一种发送端装置，其特征在于，所述发送端装置包括：确定模块和交织模块；
    所述确定模块，用于确定第二交织组，所述第二交织组包括N2个第一时间单元，所述第一时间单元对应的频域上包括至少两个频域资源单元，所述频域资源单元上映射有调制符号，N2为大于1的正整数；
    所述交织模块，用于对所述第二交织组进行交织，得到N2个第二时间单元，所述N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，所述子调制符号序列包括所述N2个第一时间单元中至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号，K2、M2为正整数。
  42. 根据权利要求41所述的发送端装置，其特征在于，所述至少两个第一时间单元分别对应的M2个频域资源单元上的数据调制符号按照第二顺序排列，至少两个所述子调制符号序列对应的所述第二顺序不同。
  43. 根据权利要求41或42所述的发送端装置，其特征在于，所述确定模块，用于确定第二交织组，包括：
    所述确定模块，用于将N sym个时间单元划分为P2个交织组，所述第二交织组为所述P2个交织组中的一个，N sym为一个传输单元内包括的时间单元的总数，所述P2个交织组满足以下一项或多项：
    所述P2个交织组中不同交织组所包括的时间单元的个数相同；
    所述P2个交织组中一部分交织组所包括的时间单元的个数为第一数值，另一部分交织组所包括的时间单元的个数为第二数值；
    所述P2个交织组中不同交织组所包括的时间单元的个数不同；
    所述P2个交织组中不同交织组所包括的时间单元的个数不同，且递增或递减；
    所述P2个交织组中各个交织组包括的时间单元的个数中，最大值与最小值之差小于或等于第四阈值。
  44. 根据权利要求41-43任一项所述的发送端装置，其特征在于，所述M2是根据一个 时间单元上传输的码块数Q2确定的。
  45. 根据权利要求44所述的发送端装置，其特征在于，所述Q2大于或等于第五阈值时，所述M2满足以下公式：
    Figure PCTCN2020141872-appb-100005
    所述Q2小于或等于第六阈值时，所述M2满足如下公式：
    Figure PCTCN2020141872-appb-100006
    其中，N RB为资源块RB总数，T为每个RB包括的资源元素RE的个数，int(Q2)表示对Q2取整，f(A,B)表示A和B的最小公倍数，S为大于或等于2的正整数。
  46. 根据权利要求41-45任一项所述的发送端装置，其特征在于，所述第一时间单元对应的频域上包括的至少两个频域资源单元不连续。
  47. 根据权利要求41-46任一项所述的发送端装置，其特征在于，所述N2个第一时间单元不连续。
  48. 根据权利要求41-47任一项所述的发送端装置，其特征在于，所述N2个第一时间单元对应的第一时频资源与所述N2个第二时间单元对应的第一时频资源相同，所述第一时频资源用于映射参考信号和/或信道，或者，所述第一时频资源为预留资源。
  49. 一种接收端装置，其特征在于，所述接收端装置包括：获取模块和解交织模块；
    所述获取模块，用于获取N2个第二时间单元，所述N2个第二时间单元中每个第二时间单元对应的频域资源单元上承载K2个子调制符号序列，N2为大于1的正整数；
    所述解交织模块，用于对所述N2个第二时间单元进行解交织，得到N2个第一时间单元，所述第一时间单元对应的频域资源单元上承载调制符号序列，所述调制符号序列包括至少两个所述第二时间单元分别对应的至少M2个频域资源单元上的数据调制符号，所述至少M2个频域资源单元上的数据调制符号属于所述子调制符号序列，K2、M2为正整数。
  50. 根据权利要求49所述的接收端装置，其特征在于，所述第一时间单元对应的至少两个频域资源单元不连续。
  51. 根据权利要求49或50所述的接收端装置，其特征在于，所述N2个第一时间单元不连续。
  52. 根据权利要求49-51任一项所述的接收端装置，其特征在于，所述N2个第一时间单元对应的第一时频资源与所述N2个第二时间单元对应的第一时频资源相同，所述第一时频资源用于映射参考信号和/或信道，或者，所述第一时频资源为预留资源。
  53. 一种通信装置，其特征在于，所述通信装置包括：处理器；
    所述处理器，用于执行存储器中存储的计算机执行指令，以使所述通信装置执行如权利要求1-10中任一项所述的方法，或者，以使所述通信装置执行如权利要求11-14中任一项所述的方法，或者，以使所述通信装置执行如权利要求15-22中任一项所述的方法，或者，以使所述通信装置执行如权利要求23-26中任一项所述的方法。
  54. 一种通信装置，其特征在于，所述通信装置包括：处理器和接口电路；
    所述接口电路，用于接收计算机执行指令并传输至所述处理器；
    所述处理器用于执行所述计算机执行指令，以使所述通信装置执行如权利要求1-10中任一项所述的方法，或者，以使所述通信装置执行如权利要求11-14中任一项所述的方法，或者，以使所述通信装置执行如权利要求15-22中任一项所述的方法，或者，以使所述通信装 置执行如权利要求23-26中任一项所述的方法。
  55. 一种计算机可读存储介质，其特征在于，包括指令，当所述指令在通信装置上运行时，以使所述通信装置执行如权利要求1-10中任一项所述的方法，或者，以使所述通信装置执行如权利要求11-14中任一项所述的方法，或者，以使所述通信装置执行如权利要求15-22中任一项所述的方法，或者，以使所述通信装置执行如权利要求23-26中任一项所述的方法。
  56. 一种计算机程序产品，其特征在于，当所述计算机程序产品在通信装置上运行时，使得所述通信装置执行如权利要求1-10中任一项所述的方法，或者，以使所述通信装置执行如权利要求11-14中任一项所述的方法，或者，以使所述通信装置执行如权利要求15-22中任一项所述的方法，或者，以使所述通信装置执行如权利要求23-26中任一项所述的方法。
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