WO2021139558A1 - 一种数据处理方法、装置 - Google Patents

一种数据处理方法、装置 Download PDF

Info

Publication number
WO2021139558A1
WO2021139558A1 PCT/CN2020/140439 CN2020140439W WO2021139558A1 WO 2021139558 A1 WO2021139558 A1 WO 2021139558A1 CN 2020140439 W CN2020140439 W CN 2020140439W WO 2021139558 A1 WO2021139558 A1 WO 2021139558A1
Authority
WO
WIPO (PCT)
Prior art keywords
rus
sub
tone
interleaver
dual
Prior art date
Application number
PCT/CN2020/140439
Other languages
English (en)
French (fr)
Inventor
于健
淦明
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20912670.5A priority Critical patent/EP4075694A4/en
Priority to BR112022013498A priority patent/BR112022013498A2/pt
Priority to AU2020420057A priority patent/AU2020420057A1/en
Priority to MX2022008489A priority patent/MX2022008489A/es
Priority to CA3167142A priority patent/CA3167142A1/en
Priority to JP2022541939A priority patent/JP2023509761A/ja
Priority to KR1020227026725A priority patent/KR20220123682A/ko
Publication of WO2021139558A1 publication Critical patent/WO2021139558A1/zh
Priority to US17/859,702 priority patent/US11943052B2/en
Priority to US18/425,899 priority patent/US20240171310A1/en

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041Arrangements at the transmitter end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0057Block codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0057Block codes
    • H04L1/0058Block-coded modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0071Use of interleaving
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2626Arrangements specific to the transmitter only
    • H04L27/2627Modulators
    • H04L27/2634Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044Arrangements for allocating sub-channels of the transmission path allocation of payload
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/535Allocation or scheduling criteria for wireless resources based on resource usage policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0059Convolutional codes

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a data processing method and device.
  • Communication systems usually use channel coding to improve the reliability of data transmission and ensure communication quality.
  • bit errors often occur in series (ie, burst errors)
  • channel coding is only effective when detecting and correcting a single error or a string of errors that are not too long.
  • the prior art usually shuffles the order of bits in the bit stream before transmitting, which can reduce the probability of data burst errors. Even if an error occurs, it is a single error or a short error string. In this way, The error correction capability of channel coding can be used to correct errors, thereby recovering the original bit sequence.
  • an interleaver (such as row-column interleaving) is used before constellation point mapping. Interleaver, random interleaver, etc.) interleaving the bits in the bit stream; 2) For the bit stream encoded with low density parity code (LDPC), after the constellation point is mapped, it passes through the LDPC subcarrier mapper Come to break up the bits.
  • LDPC low density parity code
  • a user is generally assigned to one RU, and the interleaver or LDPC subcarrier mapper is performed in one RU. That is to say, for the bits in different RUs, different interleavers should be used for interleaving or different LDPCs should be used.
  • the subcarrier mapper performs subcarrier mapping.
  • next-generation wireless local area network (WLAN) standard 802.11be needs to support an orthogonal frequency division multiple access (OFDMA) system to support one user being allocated multiple RUs.
  • OFDMA orthogonal frequency division multiple access
  • users allocated with multiple RUs there is currently no specific solution on how to design an interleaver or an LDPC subcarrier mapper.
  • the embodiments of the present application provide a data processing method and device, which are used to implement an interleaver or an LDPC subcarrier mapper to disrupt the bit sequence of a user's bit stream allocated with multiple RUs, thereby saving hardware costs.
  • an embodiment of the present application provides a data processing method that can be applied to the sending end.
  • the method includes: allocating the encoded bit stream of the first user to M resource allocations (RU) or M resource allocations.
  • RU resource allocations
  • M resource allocations
  • the M RUs or the first RU are RUs allocated to the first user, and M is a positive integer greater than 1, using the first interleaver or the first subcarrier mapping
  • the processor reorders all the bits in the encoded bit stream.
  • the first user when the first user is allocated M RUs or the first RU composed of M RUs, the first user’s encoded bitstream is first allocated to M RUs or consists of M RUs. On the first RU formed, a unified first interleaver or first subcarrier mapper is then used to reorder all the bits in the encoded bit stream, which can save hardware costs.
  • an embodiment of the present application provides a data processing method that can be applied to the transmitting end.
  • the method includes: inputting all bits in the encoded bit stream of the first user into the first interleaver or the first subcarrier mapper ; Wherein, the first user is allocated M RUs or a first RU composed of M RUs, and M is a positive integer greater than 1; using the first interleaver or the first subcarrier mapper to All the bits in the encoded bitstream are reordered.
  • the first interleaver or the first subcarrier mapper is then used to reorder all the bits in the encoded bitstream, which can save hardware costs.
  • the encoded bitstream of the first user is allocated to M RUs or a first RU composed of M RUs.
  • the above includes: sequentially allocating the encoded bit stream of the first user output by the stream parser to the M RUs or the first RU composed of the M RUs in turn according to the bit sequence.
  • bit allocator can be saved, and the hardware cost is further saved.
  • the value of the number of data subcarriers N SD of the first interleaver or the first subcarrier mapper Is any positive integer in [N SD_min /Q, N SD_max /Q]; where N SD_min is the sum of the number of data subcarriers contained in all RUs in the M RUs, and N SD_max is the number of data subcarriers in the M RUs The sum of the number of subcarriers contained in all RUs; Q is the number of data subcarriers to which a data bit is mapped.
  • the number of data subcarriers N SD of the first interleaver or the first subcarrier mapper can be flexibly selected in [N SD_min /Q, N SD_max /Q] according to requirements, which improves the flexibility of the solution.
  • the number of columns N COL and the number of rows N ROW of the first interleaver satisfy the following relationship:
  • N COL ⁇ N ROW )/N BPSCS N SD ;
  • N BPSCS is the number of coded bits carried by each sub-carrier of each spatial data stream.
  • the method further includes: Determine the frequency rotation parameter N ROT of the first interleaver in any one of several ways:
  • Method 2 Select from [N ROT_min , N ROT_max ] to make the packet error rate (PER) of the receiving end the lowest positive integer or the signal noise ratio required when the PER of the receiving end is the preset value.
  • ratio, SNR is the lowest positive integer as N ROT ;
  • N ROT_min is the frequency rotation parameter of the second interleaver corresponding to the RU whose number of data subcarriers contained in the RU is less than N SD and closest to N SD
  • N ROT_min It is the frequency rotation parameter of the third interleaver corresponding to the RU whose number of data subcarriers contained in the RU is greater than N SD and closest to N SD.
  • the mode of this embodiment provides two methods for determining the frequency rotation parameter N ROT of the first interleaver, which improves the flexibility of the solution.
  • the M RUs include: a resource unit (26-tone resource unit, 26-tone resource unit) including 26 subcarriers. RU), a 52-tone RU;
  • a parameter design method of the first interleaver for uniformly interleaving the 26-tone RU and 52-tone RU is provided, which can effectively save the hardware cost of the interleaver.
  • the M RUs include: one 26-tone RU and one 106-tone RU;
  • a parameter design method of the first interleaver for uniformly interleaving the 26-tone RU and the 106-tone RU is provided, which can effectively save the hardware cost of the interleaver.
  • the sub-carrier mapping distance parameter D TM of the first sub-carrier mapper is the common divisor of N SD , where N SD is the number of data subcarriers of the first subcarrier mapper.
  • the sub-carrier mapping distance parameter D TM of the first sub-carrier mapper is reliable, and it is ensured that the first sub-carrier mapper can accurately perform sub-carrier mapping.
  • the method further includes: determining D TM in any of the following ways:
  • Method 1 Choose a positive integer from [D TM_min , D TM_max ] as D TM , where D TM_min is the second sub-carrier mapper corresponding to the RU that contains less than N SD and is closest to N SD Sub-carrier mapping distance parameter, D TM_max is the sub-carrier mapping distance parameter of the third sub-carrier mapper corresponding to the RU that contains more data sub-carriers than N SD and is closest to N SD;
  • Method 2 Select from [D TM_min , D TM_max ] the positive integer that makes the PER of the receiving end the lowest positive integer or the SNR that requires the lowest positive integer when the PER of the receiving end is the preset value as D TM ;
  • N SD and N COL ratio N SD mode three the same having a first interleaver RU size of the first sub-carrier mapper / N COL as D TM.
  • the mode of this embodiment provides three methods for determining the sub-carrier mapping distance parameter D TM , which improves the flexibility of the solution.
  • the M RUs include: one 26-tone RU and one 52-tone RU;
  • N SD 72, D TM is 4 or 6;
  • N SD 36
  • D TM 2 or 3.
  • a parameter design method of the first subcarrier mapper for uniform subcarrier mapping for 26-tone RU and 52-tone RU is provided, which can effectively save the hardware cost of the subcarrier mapper.
  • the M RUs include: one 26-tone RU and one 106-tone RU;
  • a parameter design method of the first subcarrier mapper that performs unified subcarrier mapping on the 26-tone RU and the 106-tone RU is provided, which can effectively save the hardware cost of the subcarrier mapper.
  • the M RUs are: M 242-tone RUs;
  • N SD when the dual-carrier modulation mode is not adopted, N SD is 468 and D TM is 12, and when the dual-carrier modulation mode is adopted, N SD is 234 and D TM is 9;
  • N SD when the dual-carrier modulation mode is not used, N SD is 702 and D TM is 13 or 18; when the dual-carrier modulation mode is used, N SD is 351 and D TM is 9 or 13;
  • N SD 980 and D TM is 20; when the dual-carrier modulation mode is adopted, N SD is 490 and D TM is 14.
  • a parameter design method of the first sub-carrier mapper for a plurality of 242-tone RUs to perform unified sub-carrier mapping is provided, which can effectively save the hardware cost of the sub-carrier mapper.
  • an embodiment of the present application provides a data processing method, which can be applied to the sending end.
  • the method includes: dividing the total bandwidth of the first user into N sub-bandwidths, wherein at least one sub-bandwidth of the N sub-bandwidths Consists of multiple RUs; allocates the encoded bit stream of the first user to the N sub-bandwidths; allocates the encoded bit stream on the first sub-bandwidth to M RUs or consists of M RUs RU, where the first sub-bandwidth is any sub-bandwidth in the at least one sub-bandwidth; using the first sub-carrier mapper to perform all coded bit streams on the first sub-bandwidth Reorder all bits of.
  • the total bandwidth of the first user is first segmented (that is, divided into multiple sub-bandwidths), and then unified sub-carrier mapping is performed separately for the RUs in each segment, which improves the flexibility of the solution. It solves the problem of high hardware cost of the LDPC subcarrier mapper when the total bandwidth is large.
  • an embodiment of the present application provides a data processing method that can be applied to a receiving end.
  • the method includes: obtaining a reordered bit stream of a first user from M RUs or a first RU composed of M RUs, Wherein the M RUs or the first RU are RUs allocated to the first user, and M is a positive integer greater than 1, and the reordering is performed using the first inverse interleaver or the first inverse subcarrier mapper The order of all bits in the bitstream is restored.
  • the value of the number of data subcarriers N SD of the first inverse interleaver or the first inverse subcarrier mapper is any one of [N SD_min /Q, N SD_max /Q] A positive integer; where N SD_min is the sum of the number of data subcarriers included in all RUs in the M RUs, and N SD_max is the sum of the number of subcarriers included in all RUs in the M RUs; Q is a data bit The number of data subcarriers mapped to.
  • the number of columns N COL and the number of rows N ROW of the first inverse interleaver satisfy the following relationship:
  • N COL ⁇ N ROW )/N BPSCS N SD ;
  • N BPSCS is the number of coded bits carried by each sub-carrier of each spatial data stream.
  • the method further includes: determining the first inverse interleaver in any of the following ways
  • the frequency rotation parameter N ROT :
  • Method 2 Select from [N ROT_min , N ROT_max ] the positive integer that makes the PER of the receiving end the lowest positive integer or the SNR that requires the lowest positive integer when the PER of the receiving end is the preset value as N ROT ; where N ROT_min is The number of data sub-carriers contained in the RU is less than N SD and the frequency rotation parameter of the second inverse interleaver corresponding to the RU closest to N SD . N ROT_min is the number of data sub-carriers contained in the RU that is greater than N SD and the closest to N SD. The frequency rotation parameter of the third inverse interleaver corresponding to the similar RU.
  • the M RUs include: a resource unit 26-tone RU containing 26 subcarriers, and a 52-tone RU;
  • the M RUs include: one 26-tone RU and one 106-tone RU;
  • the subcarrier mapping distance parameter D TM of the first inverse subcarrier mapper is the common divisor of N SD , where N SD is the number of data subcarriers of the first inverse subcarrier mapper.
  • the method further includes: determining D TM in any of the following ways:
  • Method 1 Choose a positive integer from [D TM_min , D TM_max ] as D TM , where D TM_min is the second inverse sub-carrier mapper corresponding to the RU that contains less than N SD and is closest to N SD Sub-carrier mapping distance parameter, D TM_max is the sub-carrier mapping distance parameter of the third inverse sub-carrier mapper corresponding to the RU that contains more data sub-carriers than N SD and is closest to N SD;
  • Method 2 Select from [D TM_min , D TM_max ] the positive integer that makes the PER of the receiving end the lowest positive integer or the SNR that requires the lowest positive integer when the PER of the receiving end is the preset value as D TM ;
  • N SD first inverse interleaver third approach having the same size as the first RU carrier mapper inverse ratio with N COL N SD / N COL as D TM.
  • the M RUs include: one 26-tone RU and one 52-tone RU;
  • N SD 72, D TM is 4 or 6;
  • N SD 36
  • D TM 2 or 3.
  • the M RUs include: one 26-tone RU and one 106-tone RU;
  • the M RUs are: M 242-tone RUs;
  • N SD when the dual-carrier modulation mode is not adopted, N SD is 468 and D TM is 12, and when the dual-carrier modulation mode is adopted, N SD is 234 and D TM is 9;
  • N SD 980 and D TM is 20; when the dual-carrier modulation mode is adopted, N SD is 490 and D TM is 14.
  • an embodiment of the present application provides a data processing device, which may be located at the sending end, and the device includes a module/unit for executing the method described in the first aspect or any possible implementation manner of the first aspect.
  • a data processing device which may be located at the sending end, and the device includes a module/unit for executing the method described in the first aspect or any possible implementation manner of the first aspect.
  • the sequential bit allocator is used to allocate the encoded bit stream of the first user to M RUs or a first RU composed of M RUs, where the M RUs or the first RU are allocated to all For the RU of the first user, M is a positive integer greater than 1;
  • the first interleaver or the first subcarrier mapper is used to reorder all the bits in the encoded bit stream.
  • an embodiment of the present application provides a data processing device, which may be located at the sending end, and the device includes a module/unit for executing the method described in the second aspect or any possible implementation manner of the second aspect.
  • a data processing device which may be located at the sending end, and the device includes a module/unit for executing the method described in the second aspect or any possible implementation manner of the second aspect.
  • a processor configured to input all bits in the encoded bit stream of the first user into the first interleaver or the first subcarrier mapper; wherein, the first user is allocated M RUs or consists of M RUs
  • the first RU of, M is a positive integer greater than 1;
  • the first interleaver or the first subcarrier mapper is used to reorder all the bits in the encoded bit stream.
  • an embodiment of the present application provides a data processing device, which may be located at the sending end, and the device includes a module/unit for executing the method described in the third aspect or any possible implementation manner of the third aspect.
  • a data processing device which may be located at the sending end, and the device includes a module/unit for executing the method described in the third aspect or any possible implementation manner of the third aspect.
  • a processor configured to divide the total bandwidth of the first user into N sub-bandwidths, where at least one sub-bandwidth of the N sub-bandwidths is composed of multiple RUs;
  • a sequential bit allocator configured to allocate the encoded bit stream of the first user to the N sub-bandwidths; allocate the encoded bit stream on the first sub-bandwidth to M RUs or M RUs On the first RU formed, wherein the first sub-bandwidth is any one of the at least one sub-bandwidth;
  • the first interleaver or the first subcarrier mapper is used to reorder all the bits in all the coded bitstreams on the first subbandwidth.
  • an embodiment of the present application provides a data processing device, which may be located at the receiving end, and the device includes a module/unit for executing the method described in the fourth aspect or any possible implementation manner of the fourth aspect.
  • a data processing device which may be located at the receiving end, and the device includes a module/unit for executing the method described in the fourth aspect or any possible implementation manner of the fourth aspect.
  • a processor configured to obtain a reordered bitstream of a first user from M RUs or a first RU composed of M RUs, where the M RUs or the first RU are allocated to the first RU
  • M is a positive integer greater than 1;
  • the first inverse interleaver or the first inverse subcarrier mapper is used to restore the order of all bits in the reordered bit stream.
  • an embodiment of the present application provides a data processing device, including a processor, configured to implement the method of the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the device may also include a memory for storing program instructions and data.
  • the memory is coupled with the processor, and the processor can call and execute program instructions stored in the memory to implement the method of the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program includes program instructions that, when executed by a computer, cause the The computer executes the method of the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • an embodiment of the present application provides a computer program product.
  • the computer program product contains instructions that, when the instructions run on a computer, cause the computer to perform operations such as the first, second, and third aspects. Three-sided or fourth-sided approach.
  • an embodiment of the present application provides a communication system that includes the data processing device provided in the first aspect, the second aspect, or the third aspect, and the data processing provided in the fourth aspect. Device.
  • Figure 1 is a partial block diagram of the BICM system when BCC coding is used in the WLAN standard
  • Figure 2 is a schematic diagram of the interleaver 1
  • Figure 3 is a schematic diagram of the interleaver 2
  • Figure 4 is a diagram of resource unit division of 20MHz bandwidth
  • Figure 5 is a diagram of resource unit division of 40MHz bandwidth
  • Fig. 6 is a diagram of resource unit division of 80MHz bandwidth
  • FIG. 7 is a schematic flowchart of a data processing method provided by an embodiment of this application.
  • FIG. 8 is a schematic flowchart of a data processing method provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of a network architecture of a WLAN to which an embodiment of this application is applicable.
  • FIG. 10 is a flowchart of a data processing method provided by an embodiment of this application.
  • 11A to 11F are schematic diagrams of allocating encoded data streams to M RUs
  • Figures 12A to 12B are PER graphs
  • FIG. 13 is a schematic flowchart of another data processing method provided by an embodiment of the application.
  • FIG. 14 is a schematic diagram of segmenting the total bandwidth of the first user
  • 15 is a schematic diagram of the flow of the subcarrier mapper when segmenting the total bandwidth of M RUs;
  • 16 is a schematic flowchart of another data processing method provided by an embodiment of this application.
  • FIG. 17 is a schematic flowchart of another data processing method provided by an embodiment of the application.
  • FIG. 19 is a schematic structural diagram of a first data processing apparatus 1900 at the sending end according to an embodiment of the application;
  • FIG. 20 is a schematic structural diagram of a second data processing apparatus 2000 at the sending end according to an embodiment of this application;
  • FIG. 21 is a schematic structural diagram of a third data processing apparatus 2100 at the sending end according to an embodiment of the application.
  • FIG. 22 is a schematic structural diagram of a data processing apparatus 2200 at the receiving end according to an embodiment of the application.
  • orthogonal frequency division multiplexing divides the channel into several orthogonal sub-channels, converts high-speed data signals into parallel low-speed sub-data streams, and modulates them on each sub-channel.
  • OFDM orthogonal frequency division multiplexing
  • Each carrier in OFDM is orthogonal to each other.
  • Each carrier has an integer number of sub-carrier periods within one symbol time. The spectrum zero of each carrier overlaps with the zeros of adjacent carriers, which reduces the interference between carriers.
  • WLAN wireless local area network
  • bit-based interleaving coding modulation (The system framework of bit-interleaved coded modulation (BICM), that is, a channel encoder (encoder), an interleaver (interleaver) and a memoryless constellation mapper (constellation mapper) are serially cascaded.
  • BICM bit-interleaved coded modulation
  • the BICM system increases the channel coding gain through the cascaded interleaver, thereby effectively improving the transmission reliability of the system.
  • the existing WLAN standard combines OFDM and BICM technology, and performs an interleaving operation on the channel coded bit sequence before OFDM modulation, so as to obtain frequency domain coding diversity gain under the wireless fading channel.
  • FIG. 1 is a block diagram of a part of the BICM system when using binary convolution code (BCC) encoding in the WLAN standard, including forward error control (FCC) encoders and stream parsing cascaded in sequence (stream parser) device, interleaver, constellation mapper and cyclic shift diversity (CSD) device.
  • BCC binary convolution code
  • the interleaver is generally composed of three parts (or three specific interleavers, denoted by interleaver 1, interleaver 2, and interleaver 3) in series cascade.
  • Interleaver 1 Map adjacent coded bits to non-adjacent OFDM subcarriers.
  • Figure 2 is a schematic diagram of the interleaving principle of a traditional row-column interleaver. It inputs data in rows and reads out in columns. Its parameters are N COL and N ROW , where N ROW is the number of rows and N COL is the number of columns.
  • interleaving formula of interleaver 1 is:
  • Interleaver 2 Interleaving the adjacent coded bits to the least significant bit (LSB) and most significant bit (MSB) in the constellation diagram to avoid the consecutive mapping of the coded bits to the least significant bit.
  • LSB least significant bit
  • MSB most significant bit
  • interleaving formula of interleaver 2 is:
  • N CBPSS is the number of coded bits of each symbol in each spatial data stream
  • k is the identification of the position of the bit before interleaving in the bit stream
  • j is the number of bits after interleaving Identifies the position of the bit in the bitstream.
  • the coded bits in the first column are all mapped to high-significant bits
  • the coded bits in the second column are all mapped to the medium-significant bits
  • the coded bits in the third column are all mapped to the medium significant bits.
  • mapped to the least significant bits so adjacent coded bits will be continuously mapped to the lower and higher effective bits in the constellation diagram
  • the adjacent coded bits in each column The bits are alternately mapped to the lower and higher effective bits in the constellation diagram, thereby avoiding long-term operation of low reliability (LSB) bits.
  • LSB low reliability
  • interleaver 2 is actually the output of interleaver 1, so the bits before interleaving in interleaver 2 here correspond to the bits after interleaver 1 interleaving, that is, k in interleaver 2 is not the same
  • k in interleaver 2 should actually be equivalent to i in interleaver 1.
  • Interleaver 3 If there is more than one spatial data stream, there will be an interleaver 3, which performs a frequency domain rotation operation on the additional spatial data stream.
  • the parameter of the interleaver 3 is N ROT , which represents the frequency of the current spatial data stream Spin.
  • interleaving formula of interleaver 2 is:
  • i SS represents the sequence number of the current spatial data stream
  • r is the identifier of the position of the interleaved bit in the bit stream.
  • OFDMA orthogonal frequency division multiple access
  • OFDMA divides the transmission bandwidth into a series of orthogonal non-overlapping sub-carrier sets, and allocates different sub-carrier sets to different users to achieve multiple access.
  • OFDMA system can dynamically allocate available bandwidth resources to users who need it, and it is easier to optimize the utilization of system resources. Different sets of subcarriers in each OFDM symbol will be allocated to different users.
  • 802.11ax defines resource units (26-tone resource unit, 26-tone RU) containing 26 subcarriers, as well as 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, 2 ⁇ 996-tone RU. And it is required that each user can only receive or send data on one RU. Moreover, the interleaver is performed in one RU, that is, for the bits in different RUs, different interleavers should be used for interleaving. In this way, for each user, the above-mentioned interleaver 1, interleaver 2, and interleaver 3 procedures can still be used.
  • Figure 4 Figure 4, Figure 5, and Figure 6 respectively show the resource unit division diagrams of 20MHz bandwidth, 40MHz bandwidth, and 80MHz bandwidth defined by 802.11ax.
  • the bandwidth when the bandwidth is 20 MHz, the entire bandwidth can be composed of a whole 242-tone RU, or can be composed of various combinations of 26-tone RU, 52-tone RU, and 106-tone RU. In addition to the RU used to transmit data, it also includes some guard subcarriers, null subcarriers, or direct current (DC) subcarriers.
  • guard subcarriers null subcarriers, or direct current (DC) subcarriers.
  • the bandwidth when the bandwidth is 40MHz, the entire bandwidth is roughly equivalent to a copy of the subcarrier distribution of 20MHz.
  • the entire bandwidth can consist of an entire 484-tone RU, or 26-tone RU, 52-tone RU, 106- Various combinations of tone RU and 242-tone RU.
  • the entire bandwidth is composed of 4 resource units with 242-tone RU as the unit.
  • the middle of the entire bandwidth there is also a middle 26 composed of two 13-tone subunits.
  • -tone RU The entire bandwidth can be composed of an entire 996-tone RU, or can be composed of various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, and 484-tone RU.
  • the entire bandwidth can be regarded as a copy of two 80Mhz sub-carrier distributions.
  • the entire bandwidth can consist of a whole 2*996-tone RU, or 26-tone RU, 52-tone Various combinations of RU, 106-tone RU, 242-tone RU, 484-tone RU, and 996-tone RU are not shown here.
  • next-generation WLAN standard 802.11be needs to target the OFDMA system, which can support a user to be allocated multiple RUs.
  • OFDMA orthogonal frequency division multiple access
  • the prior art has not yet given a specific solution.
  • an embodiment of the present application provides a data processing method.
  • the interleaving module can be divided into two-level processing units, the first-level processing unit A sequential bit allocator is used to alternately allocate data bits to different RUs of a single user, and the second-level processing unit uses a traditional interleaver (generally composed of interleaver 1 and interleaver 2 in the traditional WLAN standard) to interleave the bits in each RU.
  • the second-level processing unit only needs to design an interleaver for the size of the RU block, so the implementation is relatively simple.
  • the user is required to support multiple RU interleavers in parallel, that is, a corresponding interleaver must be designed separately for each RU, which increases the hardware cost.
  • the interleaver described above mainly interleaves BCC encoded bits.
  • low-density parity code (LDPC) coding as shown in FIG. 8, an embodiment of the present application provides another data processing method, which is performing constellation. After the point is mapped, the LDPC subcarrier mapper is used to break up the bits, which can achieve the equivalent interleaving effect of the BCC row-column interleaver (that is, reorder the bits).
  • LDPC low-density parity code
  • the user In the LDPC encoding mode, if the user is assigned multiple RUs, the user also needs to support multiple LDPC subcarrier mappers in parallel, that is, a corresponding LDPC subcarrier mapper must be designed separately for each RU, and there is still a hardware cost High question.
  • an embodiment of the present application also provides a data processing method to realize low-cost shuffling of the bit sequence of the bit streams of users allocated with multiple RUs.
  • a unified interleaver unified interleaver with new parameters
  • a unified LDPC subcarrier mapper with new parameters (Unified LDPC tone mapper with new parameters) on multiple RUs of the user All the bits of the data are uniformly scattered, so that for the bit data of the user, there is no need to design a large number of RU interleavers or LDPC subcarrier mappers in parallel, which can effectively save hardware costs.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the technical solutions of the embodiments of the present application can also be applied to wireless local area network (WLAN) scenarios, and can be applied to IEEE 802.11 system standards (for example, IEEE such as 802.11a/n/ac standards, etc.), the next-generation WLAN standards (such as 802.11be), or a next-generation standard, and can be applied to wireless LAN systems including but not limited to Internet of Things (IoT) networks or Vehicle to X (V2X) networks.
  • IEEE 802.11 system standards for example, IEEE such as 802.11a/n/ac standards, etc.
  • the next-generation WLAN standards Such as 802.11be
  • a next-generation standard can be applied to wireless LAN systems including but not limited to Internet of Things (IoT) networks or Vehicle to X (V2X) networks.
  • IoT Internet of Things
  • V2X Vehicle to X
  • FIG. 9 is a schematic diagram of a network architecture of a WLAN to which an embodiment of this application is applicable.
  • the equipment in the communication system includes a wireless access point (access point, AP) and a station (station, STA).
  • the communication type of the communication system includes data communication between one or more wireless access points (access point, AP) and one or more stations (station, STA), one or more APs and one or more APs Data communication between one or more STAs and one or more STAs, etc.
  • Any AP in the communication system can schedule wireless resources for STAs associated and/or unassociated with the any AP, and transmit data for the STA on the scheduled wireless resources.
  • the data transmission type includes uplink transmission and/or downlink transmission.
  • AP1 in FIG. 9 can schedule wireless resources for STA1 and STA2.
  • the WLAN system may also include more or fewer APs, and more or fewer STAs.
  • each AP can communicate with each other through a distributed system (DS).
  • DS distributed system
  • each STA may also communicate with each other, which is not specifically limited in the embodiment of the present application.
  • the STA involved in this application can be various user terminals, user devices, access devices, subscriber stations, subscriber units, mobile stations, user agents, user equipment or other names with wireless communication functions.
  • user terminals may include Various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems with wireless communication functions, as well as various forms of user equipment (UE), mobile station (mobile station, MS) ), terminal, terminal equipment, portable communication device, handset, portable computing device, entertainment device, game device or system, global positioning system device or any other device configured to communicate via a wireless medium Suitable equipment, etc.
  • UE user equipment
  • MS mobile station
  • terminal equipment portable communication device
  • handset portable computing device
  • entertainment device game device or system
  • global positioning system device global positioning system device or any other device configured to communicate via a wireless medium Suitable equipment, etc.
  • stations or STAs for the convenience of description, the devices mentioned above are collectively referred to as stations or STAs.
  • the AP involved in this application is a device deployed in a wireless communication network to provide wireless communication functions for its associated STAs.
  • the AP can be used as the hub of the communication system and can be a base station, router, gateway, or relay.
  • Communication equipment such as a server, a communication server, a switch, or a network bridge, where the base station may include various forms of macro base stations, micro base stations, and relay stations.
  • the above-mentioned devices are collectively referred to as an access point or AP.
  • At least one involved in this application refers to one or more; multiple refers to two or more.
  • Words such as “first” and “second” are only used for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor as indicating or implying order.
  • the interpretation of symbols, parameters, labels or terms in this application can be applied to the entire application document.
  • FIG. 10 is a flowchart of a data processing method provided by an embodiment of the application, and the method may be applied to the WLAN system shown in FIG. 9.
  • the transmitting end allocates the encoded bit stream of the first user to M RUs or a first RU composed of M RUs, where M RUs or the first RU are RUs allocated to the first user, and M is A positive integer greater than 1.
  • the sending end may be an STA in the WLAN system or an AP, and there is no restriction here.
  • the RU here includes, but is not limited to, the aforementioned 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU, or 2 ⁇ 996-tone RU, etc.
  • the RU allocated to the first user can be understood in the following two ways.
  • the RUs allocated to the first user are M RUs, and M is a positive integer greater than 1. It should be pointed out that the M RUs may be continuous or non-continuous in the spectrum bandwidth, and there is no restriction here. In addition, the types (or sizes of RUs) of the M RUs may be the same or different, and there is no restriction here. For example, M RUs can be one 26-tone RU and one 52-tone RU, or one 26-tone RU and one 106-tone RU, or two 242-tone RUs, or 12 242-tone RUs ,and many more.
  • the RU allocated to the first user is the first RU (or large RU or new RU) composed (or combined) of M RUs, and M is a positive integer greater than 1.
  • the first RU can be a 78-tone RU composed of a 26-tone RU and a 52-tone RU, or a 132-tone RU composed of a 26-tone RU and a 106-tone RU, or A 484-tone RU composed of two 242-tone RUs, or a 2904-tone RU composed of 12 242-tone RUs, and so on.
  • M RUs and the first RU in the above two understandings essentially refer to resources at the same location (or resources of the same size) in the spectrum bandwidth, that is, in this application
  • “M RUs" and “first RU” can be replaced with each other.
  • the transmitting end uses the first interleaver or the first subcarrier mapper to reorder all the bits in the encoded bit stream.
  • the bit reordering scheme can be different.
  • the transmitting end uses the first interleaver to reorder all the bits in the encoded bit stream.
  • the first interleaver here is designed for M RUs Of a new parameter interleaver.
  • the sender uses the first subcarrier mapper to reorder all the bits in the encoded bitstream.
  • the first subcarrier mapper here is designed for M RUs A new parameter of the subcarrier mapper.
  • step S1001 the specific manner in which the transmitting end allocates the encoded bit stream of the first user to M RUs may be:
  • the sending end sequentially allocates the bits output by the stream parser to the M RUs in turn according to the bit order.
  • M RUs are a 26-tone RU (including 24 data subcarriers, assuming that it can carry 24bits of data) and a 52-tone RU (including 48 data subcarriers, assuming that it can carry 48bits of data)
  • the encoded bit stream has a total of 72 bits, and the sender can first allocate the first to 24 bits in the bit stream (a total of 72 bits of data) to the 26-tone RU according to the bit order, and then assign the 25th bit in the bit stream. ⁇ 72 bits are allocated to 52-tone RU. It should be pointed out that in practical applications, the total number of bits of the bitstream may also be less than or greater than the number of bits that can be carried by M RUs.
  • the bit stream needs to be filled, that is, the bit stream is supplemented to 72 bits and then interleaved; if the total number of bits in the bit stream is greater than the number of bits that can be carried by M RUs, the interleaving is performed in units of symbols, for example, 144 bits , It is necessary to perform two interleaving operations on the bit stream, each interleaving 72 bits.
  • the stream parser is used to perform stream parsing on the encoded bitstream output by the encoder (that is, the bitstream is allocated to different After that, use a sequential bit allocator to sequentially allocate the bits output by the stream parser to M RUs according to the bit order, and finally allocate the bits on the M RUs
  • the unified interleaver ie, the first interleaver that uniformly inputs the new parameters performs bit order reordering.
  • the stream parser is used to stream-parse the encoded bitstream output by the encoder, and then the sequence is used
  • the bit allocator sequentially allocates the bits output by the stream parser to M RUs in bit order in turn, and then uniformly inputs the bits allocated to the M RUs to a unified subcarrier mapper with new parameters
  • the interleaver that is, the first subcarrier mapper
  • step S1001 can be replaced by: input all bits in the first user's coded bit stream into the first interleaver or the first subcarrier mapper; wherein, the first user The user is allocated M RUs or the first RU composed of M RUs, and M is a positive integer greater than 1.
  • step S1001 the specific manner in which the transmitting end allocates the encoded bit stream of the first user to M RUs may be:
  • the sender uses a sequential bit allocator (Sequentially Bit Allocator) to allocate the bits output by the stream parser to each of the M RUs in turn according to a preset rule, and then use the first interleaver to allocate all subsequent bits Bit, a unified interleaver.
  • a sequential bit allocator Sequential Bit Allocator
  • the sender can use a bit allocator to allocate each bit in the bit stream to 26-tone RU and 52-tone RU according to preset rules. For example, each bit in the bit stream is alternately allocated to 26-tone RU and 52-tone RU in bit order: the first bit is allocated to 26-tone RU, and the second bit is allocated to 52-tone RU.
  • the third bit is allocated to 26-tone RU
  • the fourth bit is allocated to 52-tone RU
  • the fifth bit is allocated to 26-tone RU
  • the sixth bit is allocated to 52-tone RU On,..., and so on.
  • assign each RU to 26-tone RU and 52-tone RU in turn: assign the first bit to 26-tone RU, assign the second to third bits to 52-tone RU, and the fourth bit Assign to 26-tone RU, assign the 5th to 6th bits to 52-tone RU, ..., and so on.
  • the stream parser is used to perform stream parsing on the encoded bitstream output by the encoder (that is, the bitstreams are allocated to different).
  • the sequential bit allocator uses the sequential bit allocator to allocate the bits output by the stream parser to M RUs according to preset rules, and finally input the bits allocated to the M RUs to the unified interleaver of the new parameters. (I.e., the first interleaver) reorders the bit order.
  • the stream parser is used to stream-parse the encoded bit stream output by the encoder, and then the sequence is used
  • the bit allocator allocates the bits output by the stream parser to M RUs according to preset rules, and then inputs the bits allocated to the M RUs into the unified subcarrier mapper interleaver (ie, the first subcarrier) of the new parameters.
  • the mapper reorders the bit order, and then performs operations such as constellation point mapping, space-time block coding, and CSD.
  • a new parameter interleaver or a new parameter LDPC subcarrier mapper is used (Unified LDPC tone mapper with new parameters)
  • LDPC tone mapper with new parameters Unified LDPC tone mapper with new parameters
  • the parameter design method of the first interleaver and the first subcarrier mapper will be introduced in detail.
  • the first embodiment mainly introduces the parameter design of the first interleaver.
  • the processes of interleaver 1, interleaver 2, and interleaver 3 mentioned above can be multiplexed.
  • the total size of the M RUs (or the size of the first RU) is different from the existing RU, the corresponding parameters need to be redesigned according to the M RUs (or the first RU).
  • one RU contains data subcarriers and pilot subcarriers.
  • the pilot sub-carrier is used for phase tracking to reduce the influence of phase difference and frequency difference on the receiving performance.
  • the data sub-carrier is used to carry data, and the part that needs to be interleaved is also the data sub-carrier. Therefore, the data sub-carrier of the first interleaver
  • the carrier design depends on the number of data subcarriers in M RUs.
  • RU52 (short for 52-tone-RU) contains 48 data subcarriers and There are 4 pilot subcarriers, so RU78 (short for 78-tone-RU) combined with RU26 and RU52 contains 72 data subcarriers and 6 pilot subcarriers.
  • RU26 contains 24 data subcarriers and 2 pilot subcarriers
  • RU106 (abbreviation for 106-tone-RU) contains 102 data subcarriers and 4 pilot subcarriers. Therefore, the combination of RU26 and RU106 RU132 (short for 132-tone-RU), contains 126 data subcarriers and 6 pilot subcarriers.
  • the original pilot subcarriers can also be used as data subcarriers.
  • the original pilot subcarriers can also be used as data subcarriers.
  • all subcarriers in RU26 can be used as data subcarriers, and RU132 combined by RU106 and RU26 contains 128 data subcarriers and 4 pilot subcarriers.
  • the value of the first interleaver N SD can be summarized as any positive integer in [N SD_min , N SD_max ].
  • N SD_min is the sum of the number of data subcarriers included in all RUs in M RUs
  • N SD_max is the sum of the number of subcarriers included in all RUs in M RUs.
  • N SD_min , N SD_max in this application represents a closed interval, that is, the minimum value of the first interleaver N SD can be N SD_min and the maximum value can be N SD_max .
  • DCM dual-carrier modulation
  • the first interleaver N SD can be summarized as any positive integer in [N SD_min /Q, N SD_max /Q].
  • N SD_min is the sum of the number of data subcarriers contained in all RUs in M RUs
  • N SD_max is the sum of the number of subcarriers contained in all RUs in M RUs
  • Q is the sum of the data subcarriers to which a data bit is mapped Quantity.
  • the number of columns N COL and the number of rows N ROW satisfy the following relationship:
  • N BPSCS represents the number of coded bits per subcarrier per spatial stream carried by each subcarrier of each spatial data stream.
  • RU78 RU26 + RU52 to an example, the total number of data subcarriers corresponding to RU78 72, assuming the number of columns N BPSCS N COL 1, corresponding to the first interleaver RU78, the number of rows N ROW may be a 24 ⁇ 3,18 ⁇ 4, 12 ⁇ 6 or 9 ⁇ 8 and other combinations.
  • the peripheral RU refers to the RU that contains the number of data subcarriers similar to the N SD of the first RU.
  • the peripheral RU of the first RU can have at most two RUs, that is, the number of data subcarriers contained is less than The N SD of the first RU and the RU closest to the N SD of the first RU (may be called the left RU of the first RU), and the number of data subcarriers contained is greater than the N SD of the first RU and is the The RU with the closest N SD (may be referred to as the right RU of the first RU).
  • RU78 For example, for RU78, you can refer to the row and column value of RU52 (that is, 16 ⁇ 3) and the row and column value of RU106 (that is, 17 ⁇ 6), and take 18 ⁇ 4.
  • RU132 For example, for RU132, you can refer to the row and column value of RU106 (17 ⁇ 6), which is 18 ⁇ 7 or 16 ⁇ 8.
  • the performance of the first interleaver or first subcarrier mapper (such as RU78) corresponding to the first RU can be made to match the performance of the interleaver or subcarrier mapper corresponding to the existing RUs (that is, RU52 and RU106) that have been verified.
  • the performance is similar to ensure the performance of the first interleaver or the first subcarrier mapper corresponding to the newly designed RU, and the number of parameter groups for testing and comparison can be reduced.
  • N COL and N ROW Similar to (1), if DCM is used, for N COL and N ROW , the operation of dividing N COL or N ROW by 2 is also required.
  • the rank value is 18 ⁇ 4 when dual-carrier modulation is not used, the rank value is 9 ⁇ 4 when dual-carrier modulation is used.
  • the rank value is 18 ⁇ 7 or 16 ⁇ 8 when dual-carrier modulation is not used, the rank value is 9 ⁇ 7 or 16 ⁇ 4 when dual-carrier modulation is used.
  • the frequency rotation parameter N ROT of the first interleaver also needs to be determined.
  • Rule one based on formula Determine N ROT .
  • floor means rounding down.
  • This formula is an empirical formula derived from N ROT in the 40MHz and 80MHz bandwidths in the standard 802.11ac.
  • N ROT_min is the frequency rotation parameter of the second interleaver corresponding to the RU whose number of data sub-carriers contained in the RU is less than N SD and closest to N SD
  • N ROT_min is the number of data sub-carriers contained in the RU is greater than N SD and The frequency rotation parameter of the third interleaver corresponding to the RU closest to the N SD.
  • the values of RU52 and RU106N ROT are referenced through simulation.
  • DCM select the parameter with the lowest SNR required for 10% PER at the receiving end in [11,12,13,14,...,29].
  • the N ROT of RU52 is set to 11.
  • the N ROT value of RU106 is 29.
  • DCM select the parameter with the lowest SNR required for 10% PER at the receiving end in [2,3,4,5,...,11].
  • the N ROT value of RU52 is 2, and the value of RU106 is The value of N ROT is 11.
  • Table 1 shows a possible parameter design solution of RU78 combined by RU26 and RU52, and two possible parameter design solutions of RU132 combined by RU106 and RU26.
  • the parameter values in Table 1 are only a possible example, and other value methods can be used in specific implementation.
  • RU106 For 132-tone RU, RU106 contains 102 data subcarriers and 4 pilot subcarriers; if directly spliced, it contains 126 data subcarriers and 6 pilot subcarriers. Taking a similar idea to RU78, the interleaver parameter values are shown in RU132 scheme one in Table 1:
  • RU132-tone RU 2 data subcarriers can be added, and 2 pilot subcarriers can be reduced.
  • all the sub-carriers in RU26 are used as data sub-carriers, it contains 128 data sub-carriers and 4 pilot sub-carriers.
  • the interleaver parameter values are shown in RU132 scheme two in the table:
  • N ROT -3, N ROT -4, N ROT -5, and N ROT -6 the values can be determined according to Rule 1 and Rule 2 described above, and the specific values can be as follows:
  • the SNR corresponding to a 10% PER is as follows:
  • the optimal NROT is 19.
  • the difference between other NROT values and the SNR of 19 is less than 0.1dB, and they can also be candidate values.
  • NROT-1 may be different, comprehensive consideration can be selected in a variety of different situations, the best, the most sub-optimal NROT value .
  • NROT-2, NROT-3, and NROT-4 are similar, so I won’t repeat them here.
  • the process of determining the parameters of the first interleaver can be just a table lookup process (such as looking up parameters in Table 1 or Table 2), or a process of determining the parameters of the first interleaver.
  • table lookup process such as looking up parameters in Table 1 or Table 2
  • process of determining the parameters of the first interleaver In the process of checking the mapping, the method steps in (1)(2)(3) above are only intended to illustrate the parameter design principle/process of the first interleaver in the embodiment of this application, and are not necessarily the same as the first interleaver to determine the parameters. process.
  • This embodiment provides a simple interleaving method for the combination of several specific RUs (RU26, RU52, RU106, etc.) when BCC encoding is given, and the unified interleaver corresponding to the combined RU (that is, the first interleaver)
  • the design method of the specific data sub-carrier number, pilot sub-carrier number, interleaver parameters (such as N COL , N ROW and N ROT, etc.) is given, which improves the flexibility of the scheme and can effectively save the cost of the interleaver.
  • Hardware cost is given.
  • the second implementation mainly introduces the parameter design of the first subcarrier mapper.
  • the second embodiment is similar to the idea of the first embodiment, and multiple small RUs can be regarded as a combined large RU. The difference is that the parameters are designed for the parameters of the LDPC-encoded subcarrier mapper.
  • the parameters of the first subcarrier mapper include the number of data subcarriers N SD .
  • N SD the number of data subcarriers of the first interleaver in the first embodiment above, which will not be repeated here.
  • the first subcarrier mapper parameter also includes a subcarrier mapping distance parameter D TM , which can be understood as the degree to which consecutive bits are broken up. As shown in Table 4.
  • D TM is the common divisor of N SD.
  • Rule 1 Choose a positive integer from [D TM_min , D TM_max ] as D TM , where D TM_min is the second sub-carrier mapper corresponding to the RU that contains less than N SD and is closest to N SD.
  • D TM_min is the second sub-carrier mapper corresponding to the RU that contains less than N SD and is closest to N SD
  • the sub-carrier mapping distance parameter, D TM_max is the sub-carrier mapping distance parameter of the third sub-carrier mapper corresponding to the RU that contains more data sub-carriers than N SD and is closest to N SD.
  • N SD and the ratio of N SD N COL Rule 2 a first interleaver having the same RU size of the first sub-carrier mapper / N COL as D TM.
  • D TM -1 4, and when there is DCM, D TM- 2 can be 2 or 3.
  • the process of determining the parameters of the first subcarrier mapper can be just a table lookup process (for example, look up the parameters in Table 4) , Or show a process of checking the mapping.
  • the above method steps are only intended to illustrate the parameter design principle/process of the first subcarrier mapper in the embodiment of this application, and are not necessarily the same as the process of determining the parameters by the first subcarrier mapper. .
  • This embodiment provides a simple subcarrier mapping method for the combination of several specific RUs (RU26, RU52, RU106, etc.) when LDPC encoding is given, and the unified subcarrier mapper ( That is, the first subcarrier mapper) provides specific data subcarrier numbers, pilot subcarrier numbers, and subcarrier mapper parameters (such as DTM ) design methods, which can effectively save the hardware cost of the subcarrier mapper.
  • the first subcarrier mapper provides specific data subcarrier numbers, pilot subcarrier numbers, and subcarrier mapper parameters (such as DTM ) design methods, which can effectively save the hardware cost of the subcarrier mapper.
  • the third embodiment mainly introduces the parameter design of combining M 242-tone RUs into a combined large RU for LDPC encoding.
  • the parameters of 484-tone RU and 996-tone RU can be reused, as shown in Table 5 below.
  • the principle is similar to that of the second embodiment.
  • D TM of the existing RU ie 484-tone RU and 996-tone RU
  • N SD the common divisor of N SD
  • D TM -2 is 9, 13, because the 802.11ax standard stipulates that RUs with a number of sub-carriers greater than 242 tones do not use BCC coding, so the D TM parameters cannot be obtained through the BCC parameters here.
  • a simple subcarrier mapping method is provided for the combination of multiple RU242, and the unified subcarrier mapper (ie, the first subcarrier mapper) corresponding to the combined RU is given.
  • the design method of the specific data subcarrier number, pilot subcarrier number, and subcarrier mapper parameters improves the flexibility of the scheme and can effectively save the hardware cost of the subcarrier mapper.
  • This fourth embodiment mainly introduces that when the total bandwidth of M RUs is greater than a preset value (for example, 80 MHz), the total bandwidth of M RUs can be segmented first, and then the RUs in each segment are individually executed as shown in Figure 10. The method flow shown.
  • a preset value for example, 80 MHz
  • FIG. 13 another data processing method provided in this embodiment of the application includes:
  • the transmitting end divides the total bandwidth of the first user into N sub-bandwidths, where at least one sub-bandwidth of the N sub-bandwidths is composed of multiple RUs.
  • the transmitting end allocates the encoded bit stream of the first user to N sub-bandwidths.
  • the transmitting end allocates the encoded bit stream on the first sub-bandwidth to M RUs or a first RU composed of M RUs, where the first sub-bandwidth is any sub-bandwidth in at least one sub-bandwidth.
  • the transmitting end uses the first subcarrier mapper to reorder all bits in all the encoded bitstreams on the first subbandwidth.
  • the parameter designs of the sub-carrier mappers corresponding to the two sub-bandwidths may be different. For example, if the first sub-bandwidth and the second sub-bandwidth in the N sub-bandwidths If the size of is different, the parameters of the first subcarrier mapper corresponding to the first subbandwidth and the parameters of the second subcarrier mapper corresponding to the second subbandwidth are different.
  • M is greater than 5.
  • M is greater than 5, indicating that the total bandwidth of M 242-tone RUs is at least greater than 80MHz.
  • the maximum bandwidth of 802.11ax is 160Mhz. At this time, the entire bandwidth can be divided into two parts with 80Mhz as the unit. Each 80MHz is called a segment. Therefore, when M is greater than 5, there are at least 2 segments, of course, it can also be 3 (total bandwidth is 240Mhz), or 4 (total bandwidth is 320Mhz).
  • segment analysis is performed in units of segments. Then in each segment, multiple existing RUs are combined equivalently, and the combined RU of each segment may be 242-tone RU, 484-tone RU, 242*3-tone RU, 242*4- tone RU.
  • Figure 15 shows the LDPC subcarrier mapper process when the total bandwidth of M RUs is segmented.
  • the sender first performs physical layer filling before frame check sequence and FEC (LDPC (LDPC) )
  • LDPC LDPC
  • the bits in each segment use an LDPC subcarrier mapper to perform a unified subcarrier mapping operation.
  • the fourth embodiment provides a method of segmenting first, and then separately performing unified subcarrier mapping for the RUs in each segment, which improves the flexibility of the solution and solves the problem of LDPC subcarrier mapper hardware when the total bandwidth is large.
  • the problem of high cost is a problem of high cost.
  • FIG. 16 Please refer to FIG. 16 for another data processing method provided in this embodiment of the present application.
  • the method can be applied to the WLAN system shown in FIG. 9.
  • Methods include:
  • the receiving end obtains the reordered bitstream of the first user from M RUs or a first RU composed of M RUs, where M RUs or the first RU are RUs allocated to the first user, and M is greater than A positive integer of 1.
  • the receiving end uses the first inverse interleaver or the first inverse subcarrier mapper to restore the order of all bits in the reordered bit stream.
  • the type of the receiving end may be STA or AP, and there is no restriction here.
  • the M RUs or the first RU allocated to the first user are the same as the embodiment shown in FIG. 10, and will not be repeated here.
  • the entire process of the first inverse interleaver is the inverse process of the first interleaver.
  • the receiving end performs CSD and constellation point mapping on the received signal in sequence, and then uses the first inverse interleaver of the new parameter to perform unified de-interleaving, and then combines the large RU (that is, the first RU) with M RUs.
  • One RU takes out the bit stream in order, performs the reverse analysis of the stream, and finally performs BCC decoding.
  • the first inverse interleaver parameter N SD, N ROW, N ROW, N COL
  • the parameter with a first interleaver corresponds exactly omitted here .
  • the entire process of the first inverse subcarrier mapper is the inverse process of the first subcarrier mapper.
  • the receiving end uses the first inverse subcarrier mapper of the new parameter to perform unified inverse mapping after CSD of the received signals respectively, and then performs inverse constellation mapping operation, and then combines the large number of M RUs.
  • the RU i.e., the first RU
  • N SD, D TM a first inverse mapper carrier, with the first subcarrier mapper parameters (N SD, D TM) corresponds exactly omitted here.
  • the first sending end processing apparatus 1900 provided in this embodiment of the application includes:
  • the sequential bit allocator 1901 is configured to allocate the encoded bit stream of the first user to M RUs or a first RU composed of M RUs, where the M RUs or the first RU are allocated to RU of the first user, M is a positive integer greater than 1;
  • the first interleaver or the first subcarrier mapper 1902 is used to reorder all the bits in the encoded bit stream.
  • the data processing device 1900 in the embodiment of the present application has any function of the sending end in the foregoing method, and will not be repeated here.
  • the second type of data processing device 2000 at the sending end includes:
  • the processor 2001 is configured to input all the bits in the encoded bit stream of the first user into the first interleaver or the first subcarrier mapper; wherein, the first user is allocated M RUs or M RUs In the first RU formed, M is a positive integer greater than 1;
  • the first interleaver or the first subcarrier mapper 2002 is used to reorder all the bits in the encoded bit stream.
  • the data processing device 2000 in the embodiment of the present application has any function of the sending end in the above method, and will not be repeated here.
  • the third data processing device 2100 at the sending end provided in this embodiment of the application includes:
  • the processor 2101 is configured to divide the total bandwidth of the first user into N sub-bandwidths, where at least one sub-bandwidth of the N sub-bandwidths is composed of multiple RUs;
  • the sequential bit allocator 2102 is configured to allocate the encoded bit stream of the first user to the N sub-bandwidths; allocate the encoded bit stream on the first sub-bandwidth to M RUs or M On a first RU composed of RUs, where the first sub-bandwidth is any one of the at least one sub-bandwidth;
  • the first interleaver or first subcarrier mapper 2103 is used to reorder all bits in all coded bitstreams on the first subbandwidth.
  • the data processing device 2100 of the embodiment of the present application has any function of the sending end in the above method, and will not be repeated here.
  • the data processing device described in the embodiment of the present application can be implemented by a general bus architecture.
  • the sequential bit allocator and the first interleaver, or the sequential bit allocator and the first subcarrier mapper, may be implemented by a processor.
  • the data processing apparatus may further include a memory, and the memory is configured to store instructions executed by the processor.
  • the data processing device described in the embodiment of the present application can be implemented by a sequential bit allocation circuit and an interleaving circuit, or a sequential bit allocation circuit and a subcarrier mapping circuit.
  • the data processing device may further include a storage medium for storing instructions executed by the sequential bit allocation circuit and the interleaving circuit, or for storing the sequential bit allocation circuit and all instructions.
  • the instructions executed by the sub-carrier mapping circuit may further include a storage medium for storing instructions executed by the sequential bit allocation circuit and the interleaving circuit, or for storing the sequential bit allocation circuit and all instructions. The instructions executed by the sub-carrier mapping circuit.
  • the data processing device described in the embodiments of this application can also be implemented using the following: one or more FPGA (Field Programmable Gate Array), PLD (Programmable Logic Device), controller, State machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.
  • FPGA Field Programmable Gate Array
  • PLD Programmable Logic Device
  • State machines gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.
  • the data processing device 2200 at the receiving end provided in this embodiment of the application includes:
  • the processor 2201 is configured to obtain a reordered bit stream of a first user from M RUs or a first RU composed of M RUs, where the M RUs or the first RU are allocated to the first RU.
  • M is a positive integer greater than 1;
  • the first inverse interleaver or the first inverse subcarrier mapper 2202 is used to restore the order of all bits in the reordered bit stream.
  • the data processing device 2200 of the embodiment of the present application has any function of the receiving end in the foregoing method, and details are not described herein again.
  • the data processing device described in the embodiment of the present application can be implemented by a general bus architecture.
  • the processor and the first inverse interleaver, or the processor and the first inverse subcarrier mapper, may be implemented by a processor.
  • the data processing apparatus may further include a memory, and the memory is configured to store instructions executed by the processor.
  • the data processing device described in the embodiment of the present application can be implemented by a processing circuit and an inverse interleaving circuit, or by a processing circuit and an inverse subcarrier mapping circuit.
  • the data processing device may further include a storage medium for storing instructions executed by the processing circuit and the inverse interleaving circuit, or for storing the processing circuit and the inverse subcarrier The instructions executed by the mapping circuit.
  • the data processing device described in the embodiments of the present application can also be implemented using the following: one or more FPGA (Field Programmable Gate Array), PLD (Programmable Logic Device), controller, State machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.
  • FPGA Field Programmable Gate Array
  • PLD Programmable Logic Device
  • State machines gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits capable of performing the various functions described throughout this application.
  • the processors involved in the embodiments of this application may be general-purpose processors, digital signal processors, application specific integrated circuits, field programmable gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, Implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the memory involved in the embodiments of this application may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory). , Such as random-access memory (RAM).
  • the memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this.
  • the memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function for storing program instructions and/or data.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application is essentially or the part that contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium. It includes several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Hardware Redundancy (AREA)

Abstract

本申请实施例提供一种数据处理方法、装置,用以实现通过一个交织器或LDPC子载波映射器对分配了多个RU的用户的比特流的比特顺序进行打乱,以节省硬件成本。其中方法包括:将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;使用第一交织器或第一子载波映射器对所述编码后的比特流中的所有比特进行重排序。

Description

一种数据处理方法、装置
相关申请的交叉引用
本申请要求在2020年01月08日提交中国专利局、申请号为202010019316.0、申请名称为“一种数据处理方法、装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域,尤其涉及一种数据处理方法、装置。
背景技术
通信系统通常采用信道编码提高数据传输的可靠性,保证通信质量。在衰落信道中,比特差错经常成串发生(即,突发错误),而信道编码仅在检测和纠正单个差错或不太长的差错串时才有效。为此,现有技术通常会将比特流中的比特顺序打乱后再进行传输,这样可以降低数据突发错误的概率,即使出现差错,也是单个差错或长度很短的差错串,这样,就可以利用信道编码的纠错能力纠正差错,从而恢复出原始比特序列。目前,比特流中的比特顺序打乱的方法主要有以下两种:1)针对二进制卷积码(binary convolution code,BCC)编码的比特流,在星座点映射之前,使用交织器(如行列交织器、随机交织器等)对比特流中的比特进行交织;2)针对低密度奇偶校验码(low density parity code,LDPC)编码的比特流,在星座点映射后,通过LDPC子载波映射器来打散比特。
目前,一个用户一般被分配一个RU,而交织器或LDPC子载波映射器是在一个RU内进行,也就是说,针对不同RU内的比特,应使用不同的交织器进行交织或者使用不同的LDPC子载波映射器进行子载波映射。
而在下一代无线局域网(wireless local area network,WLAN)标准802.11be需要针对正交频分多址(orthogonal frequency division multiple access,OFDMA)系统,支持一个用户被分配多个RU。但是,对于分配有多个RU的用户,如何设计交织器或者或LDPC子载波映射器,目前还没有具体方案。
发明内容
本申请实施例提供一种数据处理方法、装置,用以实现通过一个交织器或LDPC子载波映射器对分配了多个RU的用户的比特流的比特顺序进行打乱,节省硬件成本。
第一方面,本申请实施例提供一种数据处理方法,可以应用于发送端,方法包括:将第一用户的编码后的比特流分配到M个资源单元(resource allocation,RU)或者由M个RU组成的第一RU上,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;使用第一交织器或第一子载波映射器对所述编码后的比特流中的所有比特进行重排序。
本申请实施例中,在第一用户被分配了M个RU或者由M个RU组成的第一RU上时,先将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,然后 使用一个统一的第一交织器或第一子载波映射器对编码后的比特流中的所有比特进行重排序,可以节省硬件成本。
第二方面,本申请实施例提供一种数据处理方法,可以应用于发送端,方法包括:将第一用户的编码后的比特流中的所有比特输入第一交织器或第一子载波映射器;其中,所述第一用户被分配M个RU或者由M个RU组成的第一RU,M为大于1的正整数;使用所述第一交织器或所述第一子载波映射器对所述编码后的比特流中的所有比特进行重排序。
本申请实施例中,在第一用户被分配了M个RU或者由M个RU组成的第一RU上时,直接将第一用户的编码后的比特流中的所有比特输入一个统一的第一交织器或第一子载波映射器中,然后使用该第一交织器或第一子载波映射器对编码后的比特流中的所有比特进行重排序,可以节省硬件成本。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,包括:将流解析器输出的第一用户的编码后的比特流按照比特顺序依次轮流分配到M个RU或者由M个RU组成的第一RU上。
这样,可以节省比特分配器,进一步节省了硬件成本。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述第一交织器或所述第一子载波映射器的数据子载波数N SD的取值为[N SD_min/Q,N SD_max/Q]中的任意一个正整数;其中,N SD_min为所述M个RU中所有RU包含的数据子载波数的总和,N SD_max为所述M个RU中所有RU包含的子载波数的总和;Q为一个数据比特被映射到的数据子载波的数量。
这样,可以根据需求在[N SD_min/Q,N SD_max/Q]灵活选择第一交织器或第一子载波映射器的数据子载波数N SD,提高了方案的灵活性。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述第一交织器的列数N COL、行数N ROW满足以下关系:
(N COL×N ROW)/N BPSCS=N SD
其中,N BPSCS为每个空间数据流的每个子载波承载的编码后的比特数。
这样,保证第一交织器的列数N COL、行数N ROW取值可靠,保证第一交织器能够准确交织。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,若所述编码后的比特流中包含多个空间数据流,则所述方法还包括:通过以下几种方式中的任意一种方式确定所述第一交织器的频率旋转参数N ROT
方式一、基于公式
Figure PCTCN2020140439-appb-000001
确定N ROT
方式二、从[N ROT_min,N ROT_max]中选择使得接收端的误包率(packet error rate,PER)为最低的正整数或者使得接收端的PER为预设值时所需要的信噪比(signal noise ratio,SNR)为最低的正整数作为N ROT;其中,N ROT_min为RU中包含的数据子载波数小于N SD且与N SD 最相近的RU对应的第二交织器的频率旋转参数,N ROT_min为RU中包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三交织器的频率旋转参数。
本实施例方式提供了两种确定第一交织器的频率旋转参数N ROT的方法,提高了方案的灵活性。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述M个RU包括:一个包含26个子载波的资源单元(26-tone resource unit,26-tone RU)、一个52-tone RU;
未采用双载波调制模式时,N SD=72、N COL=18、N ROW=4×N BPSCS、N ROT=18;
采用双载波调制模式时,N SD=36、N COL=9、N ROW=4×N BPSCS、N ROT=9;或者,N SD=36、N COL=18、N ROW=2×N BPSCS、N ROT=9。
本实施方式,给出了对26-tone RU和52-tone RU进行统一交织的第一交织器的参数设计方法,可以有效节省交织器的硬件成本。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述M个RU包括:一个26-tone RU、一个106-tone RU;
未采用双载波调制模式时,N SD为126或128;如果N SD=126,则N COL=18、N ROW=7×N BPSCS、N ROT为29到58之间的一个正整数;如果N SD=128,则N COL=16、N ROW=8×N BPSCS、N ROT为29到58之间的一个正整数;
采用双载波调制模式时,N SD为63或64;如果N SD=63,则N COL=9、N ROW=7×N BPSCS、N ROT为11到29之间的一个正整数;如果N SD=64,则N COL=16、N ROW=4×N BPSCS、N ROT为11到29之间的一个正整数。
本实施方式,给出了对26-tone RU和106-tone RU进行统一交织的第一交织器的参数设计方法,可以有效节省交织器的硬件成本。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述第一子载波映射器的子载波映射距离参数D TM为N SD的公约数,其中N SD为所述第一子载波映射器的数据子载波数。
这样,保证第一子载波映射器的子载波映射距离参数D TM取值可靠,保证第一子载波映射器能够准确执行子载波映射。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述方法还包括:通过以下几种方式中的任意一种方式确定D TM
方式一、从[D TM_min,D TM_max]中选择一个正整数作为D TM,其中D TM_min为包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二子载波映射器的子载波映射距离参数,D TM_max为包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三子载波映射器的子载波映射距离参数;
方式二、从[D TM_min,D TM_max]中选择使得接收端的PER为最低的正整数或者使得接收端的PER为预设值时所需要的SNR为最低的正整数作为D TM
方式三、将与所述第一子载波映射器具有相同RU大小的第一交织器的N SD与N COL的 比值N SD/N COL作为D TM
本实施例方式提供了三种确定子载波映射距离参数D TM的方法,提高了方案的灵活性。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述M个RU包括:一个26-tone RU、一个52-tone RU;
未采用双载波调制模式时,N SD=72,D TM为4或6;
采用双载波调制模式时,N SD=36,D TM为2或3。
本实施方式,给出了对26-tone RU和52-tone RU进行统一子载波映射的第一子载波映射器的参数设计方法,可以有效节省子载波映射器的硬件成本。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述M个RU包括:一个26-tone RU、一个106-tone RU;
未采用双载波调制模式时,N SD为126或128;如果N SD=126,则D TM为7或9,如果N SD=128,则D TM为8;
采用双载波调制模式时,N SD为63或64;如果N SD=63,则D TM为7或9,如果N SD=64,则D TM为4或8。
本实施方式,给出了对26-tone RU和106-tone RU进行统一子载波映射的第一子载波映射器的参数设计方法,可以有效节省子载波映射器的硬件成本。
结合本申请实施例第一方面或第二方面所述的方法,在一种可能的设计中,所述M个RU为:M个242-tone RU;
M=2时,未采用双载波调制模式时,N SD为468,D TM为12,采用双载波调制模式时,N SD为234,D TM为9;
M=3时,未采用双载波调制模式时,N SD为702,D TM为13或18,采用双载波调制模式时,N SD为351,D TM为9或13;
M=4时,未采用双载波调制模式时,N SD为980,D TM为20,采用双载波调制模式时,N SD为490,D TM为14。
本实施方式,给出了多个242-tone RU进行统一子载波映射的第一子载波映射器的参数设计方法,可以有效节省子载波映射器的硬件成本。
第三方面,本申请实施例提供了一种数据处理方法,可以应用于发送端,方法包括:将第一用户的总带宽划分为N个子带宽,其中所述N个子带宽中的至少一个子带宽由多个RU组成;将所述第一用户的编码后的比特流分配到所述N个子带宽上;将第一子带宽上的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述第一子带宽为所述至少一个子带宽中的任意一个子带宽;使用第一子载波映射器对所述第一子带宽上的所有编码后的比特流中的所有比特进行重排序。
本申请实施例中,先将第一用户的总带宽进行分段(即划分为多个子带宽),然后再针对每个分段内的RU单独进行统一子载波映射,提高了方案的灵活性,解决了总带宽较大时LDPC子载波映射器硬件成本高的问题。
第四方面,本申请实施例提供一种数据处理方法,可以应用于接收端,方法包括:从M个RU或者由M个RU组成的第一RU上获取第一用户的重排序的比特流,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;使用第一逆交织器或第一逆子载波映射器对所述重排序的比特流中的所有比特的顺序进行复原。
在一种可能的设计中,所述第一逆交织器或所述第一逆子载波映射器的数据子载波数N SD的取值为[N SD_min/Q,N SD_max/Q]中的任意一个正整数;其中,N SD_min为所述M个RU中所有RU包含的数据子载波数的总和,N SD_max为所述M个RU中所有RU包含的子载波数的总和;Q为一个数据比特被映射到的数据子载波的数量。
在一种可能的设计中,所述第一逆交织器的列数N COL、行数N ROW满足以下关系:
(N COL×N ROW)/N BPSCS=N SD
其中,N BPSCS为每个空间数据流的每个子载波承载的编码后的比特数。
在一种可能的设计中,若所述编码后的比特流中包含多个空间数据流,则所述方法还包括:通过以下几种方式中的任意一种方式确定所述第一逆交织器的频率旋转参数N ROT
方式一、基于公式
Figure PCTCN2020140439-appb-000002
确定N ROT
方式二、从[N ROT_min,N ROT_max]中选择使得接收端的PER为最低的正整数或者使得接收端的PER为预设值时所需要的SNR为最低的正整数作为N ROT;其中,N ROT_min为RU中包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二逆交织器的频率旋转参数,N ROT_min为RU中包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三逆交织器的频率旋转参数。
在一种可能的设计中,所述M个RU包括:一个包含26个子载波的资源单元26-tone RU、一个52-tone RU;
未采用双载波调制模式时,N SD=72、N COL=18、N ROW=4×N BPSCS、N ROT=18;
采用双载波调制模式时,N SD=36、N COL=9、N ROW=4×N BPSCS、N ROT=9;或者,N SD=36、N COL=18、N ROW=2×N BPSCS、N ROT=9。
在一种可能的设计中,所述M个RU包括:一个26-tone RU、一个106-tone RU;
未采用双载波调制模式时,N SD为126或128;如果N SD=126,则N COL=18、N ROW=7×N BPSCS、N ROT为29到58之间的一个正整数;如果N SD=128,则N COL=16、N ROW=8×N BPSCS、N ROT为29到58之间的一个正整数;
采用双载波调制模式时,N SD为63或64;如果N SD=63,则N COL=9、N ROW=7×N BPSCS、N ROT为11到29之间的一个正整数;如果N SD=64,则N COL=16、N ROW=4×N BPSCS、N ROT为11到29之间的一个正整数。
在一种可能的设计中,所述第一逆子载波映射器的子载波映射距离参数D TM为N SD的公约数,其中N SD为所述第一逆子载波映射器的数据子载波数。
在一种可能的设计中,所述方法还包括:通过以下几种方式中的任意一种方式确定D TM
方式一、从[D TM_min,D TM_max]中选择一个正整数作为D TM,其中D TM_min为包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二逆子载波映射器的子载波映射距离参数,D TM_max为包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三逆子载波映 射器的子载波映射距离参数;
方式二、从[D TM_min,D TM_max]中选择使得接收端的PER为最低的正整数或者使得接收端的PER为预设值时所需要的SNR为最低的正整数作为D TM
方式三、将与所述第一逆子载波映射器具有相同RU大小的第一逆交织器的N SD与N COL的比值N SD/N COL作为D TM
在一种可能的设计中,所述M个RU包括:一个26-tone RU、一个52-tone RU;
未采用双载波调制模式时,N SD=72,D TM为4或6;
采用双载波调制模式时,N SD=36,D TM为2或3。
在一种可能的设计中,所述M个RU包括:一个26-tone RU、一个106-tone RU;
未采用双载波调制模式时,N SD为126或128;如果N SD=126,则D TM为7或9,如果N SD=128,则D TM为8;
采用双载波调制模式时,N SD为63或64;如果N SD=63,则D TM为7或9,如果N SD=64,则D TM为4或8。
在一种可能的设计中,所述M个RU为:M个242-tone RU;
M=2时,未采用双载波调制模式时,N SD为468,D TM为12,采用双载波调制模式时,N SD为234,D TM为9;
M=3时,未采用双载波调制模式时,N SD为702,D TM为13或18,采用双载波调制模式时,N SD为351,D TM为9或13;
M=4时,未采用双载波调制模式时,N SD为980,D TM为20,采用双载波调制模式时,N SD为490,D TM为14。
第五方面,本申请实施例提供一种数据处理装置,可以位于发送端,该装置包括用于执行上述第一方面或第一方面任意可能的实现方式所述方法的模块/单元。例如:
顺序比特分配器,用于将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;
第一交织器或第一子载波映射器,用于对所述编码后的比特流中的所有比特进行重排序。
第六方面,本申请实施例提供一种数据处理装置,可以位于发送端,该装置包括用于执行上述第二方面或第二方面任意可能的实现方式所述方法的模块/单元。例如:
处理器,用于将第一用户的编码后的比特流中的所有比特输入第一交织器或第一子载波映射器;其中,所述第一用户被分配M个RU或者由M个RU组成的第一RU,M为大于1的正整数;
第一交织器或第一子载波映射器,用于对所述编码后的比特流中的所有比特进行重排序。
第七方面,本申请实施例提供一种数据处理装置,可以位于发送端,该装置包括用于 执行上述第三方面或第三方面任意可能的实现方式所述方法的模块/单元。例如:
处理器,用于将第一用户的总带宽划分为N个子带宽,其中所述N个子带宽中的至少一个子带宽由多个RU组成;
顺序比特分配器,用于将所述第一用户的编码后的比特流分配到所述N个子带宽上;将第一子带宽上的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述第一子带宽为所述至少一个子带宽中的任意一个子带宽;
第一交织器或第一子载波映射器,用于对所述第一子带宽上的所有编码后的比特流中的所有比特进行重排序。
第八方面,本申请实施例提供一种数据处理装置,可以位于接收端,该装置包括用于执行上述第四方面或第四方面任意可能的实现方式所述方法的模块/单元。例如:
处理器,用于从M个RU或者由M个RU组成的第一RU上获取第一用户的重排序的比特流,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;
第一逆交织器或第一逆子载波映射器,用于对所述重排序的比特流中的所有比特的顺序进行复原。
第九方面,本申请实施例提供一种数据处理装置,包括处理器,用于实现上述第一方面、第二方面、第三方面或第四方面的方法。
可选的,所述装置还可以包括存储器,用于存储程序指令和数据。所述存储器与所述处理器耦合,所述处理器可以调用并执行所述存储器中存储的程序指令,用于实现上述第一方面、第二方面、第三方面或第四方面的方法。
第十方面,本申请实施例提供一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序包括程序指令,所述程序指令在被计算机执行时,使所述计算机执行如第一方面、第二方面、第三方面或第四方面的方法。
第十一方面,本申请实施例提供一种计算机程序产品,所述计算机程序产品包含有指令,当所述指令在计算机上运行时,使得所述计算机执行如第一方面、第二方面、第三方面或第四方面的方法。
第十二方面,本申请实施例提供一种通信系统,所述通信系统包括上述第一方面或第二方面或第三方面所提供的数据处理装置,和,上述第四方面所提供的数据处理装置。
附图说明
图1为WLAN标准中使用BCC编码时BICM系统的部分架构框图;
图2为交织器1的原理图;
图3为交织器2的原理图;
图4为20MHz带宽的资源单元划分图;
图5为40MHz带宽的资源单元划分图;
图6为80MHz带宽的资源单元划分图;
图7为本申请实施例提供的一种数据处理方法的流程示意图;
图8为本申请实施例提供的一种数据处理方法的流程示意图;
图9为本申请实施例适用的一种WLAN的网络架构示意图;
图10为本申请实施例提供的一种数据处理方法的流程图;
图11A至图11F为将编码后的数据流分配到M个RU上的示意图;
图12A至图12B为PER曲线图;
图13为本申请实施例提供的另一种数据处理方法的流程示意图;
图14为对第一用户的总带宽分段的示意图;
图15为对M个RU的总带宽进行分段时的子载波映射器流程示意图;
图16为本申请实施例提供的另一种数据处理方法的流程示意图;
图17为本申请实施例提供的另一种数据处理方法的流程示意图;
图18为本申请实施例提供的另一种数据处理方法的流程示意图;
图19为本申请实施例提供的第一种发送端的数据处理装置1900的结构示意图;
图20为本申请实施例提供的第二种发送端的数据处理装置2000的结构示意图;
图21为本申请实施例提供的第三种发送端的数据处理装置2100的结构示意图;
图22为本申请实施例提供的接收端的数据处理装置2200的结构示意图。
具体实施方式
现代无线通信需解决的关键问题是:如何进一步提高系统的频谱利用率和传输可靠度。作为一种多载波技术,正交频分复用(orthogonal frequency division multiplexing,OFDM)将信道分成若干正交子信道,将高速数据信号转换成并行的低速子数据流,调制到在每个子信道上进行传输。OFDM中的各个载波是相互正交的,每个载波在一个符号时间内有整数个子载波周期,每个载波的频谱零点和相邻载波的零点重叠,这样便减小了载波间的干扰。由于载波间有部分重叠,所以它比传统的频分复用技术提高了频带利用率,同时提供了相比传统单载波系统更优的抗频率选择性衰落性能。基于以上所述优点,现有无线局域网(wireless local area network,WLAN)标准(如802.11a/n/ac等)已广泛采用了OFDM技术。
为了在衰落信道下进一步提高系统的传输可靠度,很多无线通信标准(例如HSPA/LTE,IEEE 802.11a/g/n/ac,DVB-T2/S2/C2等)采用了基于比特交织编码调制(bit-interleaved coded modulation,BICM)的系统框架,即串行级联一个信道编码器(encoder)、一个交织器(interleaver)和一个无记忆的星座映射器(constellation mapper)。在衰落信道下,BICM系统通过级联交织器增加信道编码增益,从而有效提高系统传输可靠度。
现有WLAN标准结合了OFDM和BICM技术,在OFDM调制之前对信道编码比特序列进行交织操作,从而在无线衰落信道下获得频域编码分集增益。
图1为WLAN标准中使用二进制卷积码(binary convolution code,BCC)编码时BICM系统的部分架构框图,包括依次串行级联的前向差错控制(forward error control,FCC)编码器、流解析(stream parser)器、交织器、星座映射器和循环延时分集(cyclic shift diversity,CSD)器。
交织器一般由三个部分(或者说三个具体的交织器,以下用交织器1、交织器2和交织器3表示)串行级联组成。
交织器1:将相邻的编码比特映射到不相邻的OFDM子载波上。
图2为传统行列交织器的交织原理图,它将数据以行的形式输入并以列的形式读出,其参数为N COL、N ROW,其中N ROW为行数,N COL为列数。
令交织前后的比特分别为x k和w i,则交织器1的交织公式为:
Figure PCTCN2020140439-appb-000003
其中,
Figure PCTCN2020140439-appb-000004
表示对
Figure PCTCN2020140439-appb-000005
向下取整,k mod N COL表示将k和N COL做除法后的余数,k为交织前的比特在比特流中的位置的标识,i为交织后的比特在比特流中的位置的标识。k=0,1,…,N CBPSS(i SS)–1,其中,i SS为当前空间数据流的序号,N CBPSS为当前输入交织器的比特流的总比特数(或者说当前交织器处理的比特流的总比特数)。
交织器2:将相邻的编码比特交错地映射到星座图中的低有效位(least significant bit,LSB)和高有效位(most significant bit,MSB),避免编码比特连续映射于低有效位。
令m=log 2M为星座点调制阶数(其中,M为正交振幅调制(quadrature amplitude modulation,QAM)的调制方式),例如调制方式为64QAM,时m=log 264=6),令交织前后的比特分别为y j和w k,则交织器2的交织公式为:
Figure PCTCN2020140439-appb-000006
其中,s=max{1,m/2},N CBPSS为每个空间数据流中每个符号的编码比特数,k为交织前的比特在比特流中的位置的标识,j为交织后的比特在比特流中的位置的标识。
如图3所示,在交织器2交织前,第1列中的编码比特均被映射至高有效位,第2列中的编码比特均被映射至中有效位,第3列中的编码比特均被映射至低有效位,所以相邻的编码比特会被连续的映射到星座图中的较低和较高的有效比特上,而通过交织器2交织后,使得每一列中的相邻的编码比特都被交替地映射到星座图中的较低和较高的有效比特上,从而避免低可靠性(LSB)比特的长时间运行。
应理解,交织器2的输入实际上是交织器1的输出,所以这里交织器2中的交织前的比特对应的是交织器1交织后的比特,也即交织器2中的k并不等同于交织器1中的k,交织器2中的k实际上应等同于交织器1中的i。
交织器3:如果存在大于一个空间数据流,则会存在交织器3,该交织器对额外的空间数据流进行频域旋转操作,交织器3的参数为N ROT,表示当前空间数据流的频率旋转。
令交织前后的比特分别为z r和y k,则交织器2的交织公式为:
Figure PCTCN2020140439-appb-000007
其中,i SS表示当前空间数据流的序号,r为交织后的比特在比特流中的位置的标识。应理解,交织器3的输入实际上是交织器2的输出,所以这里交织器3中的交织前的比特对应的是交织器2交织后的比特,也即交织器3中的k并不等同于交织器2或1中的k,交织器3中的k实际上应等同于交织器2中的j。
为了进一步提高多用户下系统的传输效率,802.11ax标准将引入正交频分多址(orthogonal frequency division multiple access,OFDMA)技术。OFDMA将传输带宽划分 成正交的互不重叠的一系列子载波集,将不同的子载波集分配给不同的用户实现多址。与OFDM技术相比,OFDMA系统可动态地把可用带宽资源分配给需要的用户,更容易实现系统资源的优化利用,每个OFDM符号中不同的子载波集将分配给不同的用户。
802.11ax定义了包含26个子载波的资源单元(26-tone resource unit,26-tone RU),以及52-tone RU,106-tone RU,242-tone RU,484-tone RU,996-tone RU,2×996-tone RU。并且要求每个用户只能在一个RU上接收或者发送数据。而且交织器是在一个RU内进行,也就是说,针对不同RU内的比特,应使用不同的交织器进行交织。这样对于每个用户来说,仍然可以采用上述交织器1、交织器2、交织器3的流程。
图4、图5、图6分别表示802.11ax定义的20MHz带宽,40MHz带宽,80MHz带宽的资源单元划分图。
参见图4,当带宽为20MHz时,整个带宽可以由一整个242-tone RU组成,也可以由26-tone RU,52-tone RU,106-tone RU的各种组合组成。除了用于传输数据的RU,此外,还包括一些保护(guard)子载波、空子载波或直流(direct current,DC)子载波等。
参见图5,当带宽为40MHz时,整个带宽大致相当于20MHz的子载波分布的复制,整个带宽可以由一整个484-tone RU组成,也可以由26-tone RU,52-tone RU,106-tone RU,242-tone RU的各种组合组成。
参见图6,当带宽为80MHz时,整个带宽由4个242-tone RU为单位的资源单元组成,特别的,在整个带宽的中间,还存在一个由两个13-tone子单元组成的中间26-tone RU。整个带宽可以由一整个996-tone RU组成,也可以由26-tone RU,52-tone RU,106-tone RU,242-tone RU,484-tone RU的各种组合组成。
当带宽为160MHz或者80+80MHz时,整个带宽可以看成两个80Mhz的子载波分布的复制,整个带宽可以由一整个2*996-tone RU组成,也可以由26-tone RU,52-tone RU,106-tone RU,242-tone RU,484-tone RU,996-tone RU的各种组合组成,这里不再一一作图示例。
在下一代WLAN标准802.11be需要针对OFDMA系统,可以支持一个用户被分配多个RU。但是,对于分配多个RU的用户,如何设计交织器或者或LDPC子载波映射器,现有技术还未给出具体方案。
为此,本申请实施例提供了一种数据处理方法,如图7所示,如果同一用户被分配n个RU,n大于1,则交织模块可以分为两级处理单元,第一级处理单元利用顺序比特分配器给单个用户的不同RU交错分配数据比特,第二级处理单元利用传统交织器(一般由传统WLAN标准中的交织器1和交织器2组成)对各个RU内比特进行交织。该方案中,第二级处理单元只需针对RU块的大小设计交织器即可,因此实现相对简单。但是需要该用户并行支持多个RU交织器,即针对每个RU都要单独设计一个对应的交织器,增加了硬件成本。
上述讲述的交织器主要是针对BCC编码的比特进行交织。而对于802.11系统中另外一种编码技术,低密度奇偶校验码(low density parity code,LDPC)编码,如图8所示,本申请实施例提供了另一种数据处理方法,是在进行星座点映射后,通过LDPC子载波映射器来打散比特,可以达到同BCC行列交织器等效的交织效果(即将比特进行重排序)。在LDPC编码方式下,如果用户被分配了多个RU,同样需要用户并行支持多个LDPC子载波映射器,即针对每个RU都要单独设计一个对应的LDPC子载波映射器,仍然存在硬件成本高的问题。
为此,本申请实施例还提供了一种数据处理方法,用以实现低成本地对分配了多个RU的用户的比特流的比特顺序进行打乱。具体的,在同一个用户(如第一用户)被分配了多 个RU或者说被分配了由多个RU组成的大RU(或者说新RU)时,通过设计一个新参数的统一交织器(unified interleaver with new parameters)对该用户的多个RU上的所有比特进行统一交织,或者设计一个新参数的统一LDPC子载波映射器(Unified LDPC tone mapper with new parameters)对该用户的多个RU上的所有比特进行统一打散,这样,针对该用户的比特数据,可以不需要并行设计大量的RU交织器或者LDPC子载波映射器,可以有效节省硬件成本。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通信(global system of mobile communication,GSM)系统、码分多址(code division multiple access,CDMA)系统、宽带码分多址(wideband code division multiple access,WCDMA)系统、通用分组无线业务(general packet radio service,GPRS)、长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)、通用移动通信系统(universal mobile telecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信系统、第五代(5th generation,5G)系统,如NR,及未来的通信系统,如6G系统等。当然,本申请实施例的技术方案也可以应用于其它的通信系统,只要该通信系统存在数据的接收和/或发送即可。
本申请实施例的技术方案还可以适用于无线局域网(wireless local area network,WLAN)场景下,可以适用于IEEE 802.11系统标准(例如IEEE如802.11a/n/ac标准等),下一代WLAN标准(如802.11be),或更下一代的标准中,且可适用于包括但不限于物联网(internet of things,IoT)网络或车联网(Vehicle to X,V2X)网络等无线局域网系统中。
示例性的,图9为本申请实施例适用的一种WLAN的网络架构示意图。该通信系统中的设备包括无线接入点(access point,AP)、站点(station,STA)。该通信系统的通信的类型包括一个或多个无线接入点(access point,AP)与一个或多个站点(station,STA)之间的数据通信、一个或多个AP与一个或多个AP之间的数据通信、一个或多个STA与一个或多个STA之间的数据通信等。
该通信系统中任意AP可为该任意AP关联和/或未关联的STA调度无线资源,并在调度的无线资源上为该STA传输数据,数据传输类型包括上行传输和/或下行传输。例如,图9中的AP1可以为STA1和STA2调度无线资源。为了描述简便,图9中仅示出两个AP、三个STA,但应理解,该WLAN系统中还可以包含更多或者更少AP,更多或者更少的STA。另外,各个AP之间可通过分布式系统(distributed system,DS)相互通信。进一步地,各STA之间也可以进行相互通信,本申请实施例对此不做具体限定。
本申请涉及到的STA,可以是各种具有无线通信功能的用户终端、用户装置,接入装置,订户站,订户单元,移动站,用户代理,用户装备或其他名称,其中,用户终端可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备,以及各种形式的用户设备(user equipment,UE),移动台(mobile station,MS),终端(terminal),终端设备(terminal equipment),便携式通信设备,手持机,便携式计算设备,娱乐设备,游戏设备或系统,全球定位系统设备或被配置为经由无线介质进行网络通信的任何其他合适的设备等。在此,为了描述方便,上面提到的设备统称为站点或STA。
本申请所涉及到的AP,是一种部署在无线通信网络中为其关联的STA提供无线通信功 能的装置,该AP可用作该通信系统的中枢,可以为基站、路由器、网关、中继器、通信服务器、交换机或网桥等通信设备,其中,所述基站可以包括各种形式的宏基站,微基站,中继站等。在此,为了描述方便,上面提到的设备统称为接入点或AP。
为了使本申请的目的、技术方案和优点更加清楚,下面结合说明书附图对本申请实施例进行具体描述。需要说明的是,本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释,而非旨在限定本申请。
需要理解的是,在下文的描述中,“和/或”,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。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请中所涉及的至少一个是指一个或多个;多个,是指两个或两个以上。“第一”、“第二”等词汇,仅用于区分描述的目的,而不能理解为指示或暗示相对重要性,也不能理解为指示或暗示顺序。本申请中对符号、参数、标号或术语等的解释可以适用于整个申请文件。
图10为本申请实施例提供的一种数据处理方法的流程图,该方法可以应用于图9所示的WLAN系统。
S1001、发送端将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中M个RU或第一RU为分配给第一用户的RU,M为大于1的正整数。
其中,发送端可以是WLAN系统中的STA,也可以是AP,这里不做限制。这里的RU包括但不限于上文所述的26-tone RU、52-tone RU、106-tone RU、242-tone RU、484-tone RU、996-tone RU或2×996-tone RU等。
本申请实施例中,分配给第一用户的RU,可以有以下两种理解。
第1种、分配给第一用户的RU是M个RU,M为大于1的正整数。需要指出的是,M个RU在频谱带宽中可以是连续的,也可以是非连续的,这里不做限制。并且,M个RU的类型(或者说RU的大小)可以相同,也可以不同,这里不做限制。例如,M个RU可以是一个26-tone RU和一个52-tone RU,或者是一个26-tone RU和一个106-tone RU,或者是两个242-tone RU,或者是12个242-tone RU,等等。
第2种、分配给第一用户的RU是M个RU组成(或者说合并)的第一RU(或者说大RU或新RU),M为大于1的正整数。例如,第一RU可以是由一个26-tone RU和一个52-tone RU的组成的78-tone RU,或者是由一个26-tone RU和一个106-tone RU组成的132-tone RU,或者是由两个242-tone RU组成的484-tone RU,或者是由12个242-tone RU组成的2904-tone RU,等等。
需要指出的是,上述两种理解中的M个RU和第一RU,在频谱带宽中实质上指代的是相同位置上的资源(或者说相同大小的资源),也就是说,在本申请实施例中,“M个RU”和“第一RU”可以相互替换。
S1002、发送端使用第一交织器或第一子载波映射器对编码后的比特流中的所有比特进行重排序。
针对不同的编码方式,对比特进行重排序的方案可以不同。示例性的,如果比特流的编码方式为BCC,则发送端使用第一交织器对编码后的比特流中的所有比特进行重排序,应理解,这里的第一交织器是针对M个RU设计的一个新参数的交织器。如果比特流的编码方式为LDPC,则发送端使用第一子载波映射器对编码后的比特流中的所有比特进行重排序,应理解,这里的第一子载波映射器是针对M个RU设计的一个新参数的子载波映射 器。
一种可能的实施方式中,在步骤S1001的具体实施中,发送端将第一用户的编码后的比特流分配到M个RU的具体方式,可以是:
方式1、发送端按顺序将流解析器输出后的比特按照比特顺序依次轮流分配到M个RU上。
示例性的,假设M个RU为一个26-tone RU(包括24个数据子载波,假设可承载24bits的数据)和一个52-tone RU(包括48个数据子载波,假设可承载48bits的数据),编码后的比特流一共有72bits,则发送端可以按照比特顺序先将比特流(总共72bits的数据)中的第1~24比特分配到26-tone RU上,然后将比特流中的第25~72比特分配到52-tone RU上。需要指出的是,在实际应用中,比特流的总比特数也可能小于或者大于M个RU可承载的比特数,如果比特流的总比特数小于M个RU可承载的比特数,例如为70bits,则需要对比特流进行填充,即将比特流补充至72bits后在进行交织;如果比特流的总比特数大于M个RU可承载的比特数,则交织是以符号为单位进行交织的,例如144bits,需要对比特流进行两次交织操作,每次交织72bits。
以第一交织器为例,如图11A所示,发送端使用编码器对比特进行信道编码后,使用流解析器对编码器输出的编码后的比特流进行流解析(即将比特流分配到不同的空间流上),之后,使用顺序比特分配器(sequentially bit allocator)按顺序将流解析器输出后的比特按照比特顺序依次轮流分配到M个RU上,最后将分配到M个RU上的比特统一输入新参数的统一交织器(即第一交织器)进行比特顺序的重排序。
以第一子载波映射器为例,如图11B所示,发送端使用编码器对比特进行信道编码后,使用流解析器对编码器输出的编码后的比特流进行流解析,之后,使用顺序比特分配器(sequentially bit allocator)按顺序将流解析器输出后的比特按照比特顺序依次轮流分配到M个RU上,之后将分配到M个RU上的比特统一输入新参数的统一子载波映射器交织器(即第一子载波映射器)进行比特顺序的重排序,之后在进行星座点映射、空时块编码、CSD等操作。
应理解,在这种分配方式下,由于编码后的比特流中的所有比特是按照顺序依次进入同一个交织器或子载波映射器,所以也可以认为发送端并没有将编码后的比特流分配到M个RU的过程,而是直接将编码后的比特流按顺序输入到第一交织器或第一子载波映射器中,所以图11A中的虚线部分也可以不画出,如图11C所示,同理,图11B中的虚线部分也可以不画出,如图11D所示。
因此,在这种分配方式下,步骤S1001可以还被替换为:将第一用户的编码后的比特流中的所有比特输入第一交织器或第一子载波映射器;其中,所述第一用户被分配M个RU或者由M个RU组成的第一RU,M为大于1的正整数。
另一种可能的实施方式中,在步骤S1001的具体实施中,发送端将第一用户的编码后的比特流分配到M个RU的具体方式,可以是:
方式2、发送端使用顺序比特分配器(Sequentially Bit Allocator)将流解析器输出的比特轮流按照预设规则分配到M个RU中的各个RU中,然后使用第一交织器,将分配以后的所有比特,进行统一的交织器。
示例性的,假设比特流一共72bits,M个RU为一个26-tone RU(包括24个数据子载波,假设可承载24bits的数据)和一个52-tone RU(包括48个数据子载波,假设可承载 48bits的数据),则发送端可以使用比特分配器,按照预设规则将比特流中的各比特分配到26-tone RU和52-tone RU上。例如,将比特流中的各比特按照比特顺序先后交替地分配到26-tone RU和52-tone RU上:将第1比特分配到26-tone RU上,将第2比特分配到52-tone RU上,将第3位比特分配到26-tone RU上,将第4比特分配到52-tone RU上,将第5位比特分配到26-tone RU上,将第6比特分配到52-tone RU上,……,以此类推。又如,按各RU大小比例轮流分配到26-tone RU和52-tone RU上:将第1比特分配到26-tone RU,将第2~3比特分配到52-tone RU上,第4比特分配到26-tone RU上,将第5~6比特分配到52-tone RU上,……,以此类推。
应理解,上述方式1也可以理解为方式2的一种特例。
以第一交织器为例,如图11E所示,发送端使用编码器对比特进行信道编码后,使用流解析器对编码器输出的编码后的比特流进行流解析(即将比特流分配到不同的空间流上),之后,使用顺序比特分配器将流解析器输出后的比特按照预设规则分配到M个RU上,最后将分配到M个RU上的比特统一输入新参数的统一交织器(即第一交织器)进行比特顺序的重排序。
以第一子载波映射器为例,如图11F所示,发送端使用编码器对比特进行信道编码后,使用流解析器对编码器输出的编码后的比特流进行流解析,之后,使用顺序比特分配器将流解析器输出后的比特按照预设规则分配到M个RU上,之后将分配到M个RU上的比特统一输入新参数的统一子载波映射器交织器(即第一子载波映射器)进行比特顺序的重排序,之后在进行星座点映射、空时块编码、CSD等操作。
本申请实施例,在第一用户被分配了多个RU(或者说被分配了由多个RU组成的第一RU)时,通过一个新参数的交织器或者一个新参数的LDPC子载波映射器(Unified LDPC tone mapper with new parameters)对该用户多个RU(或者说第一RU)上的所有比特进行重排序,可以不需要并行支持多个RU交织器或者多个LDPC子载波映射器就能实现对多RU的用户的编码比特的重排序,可以有效节省硬件成本。
下面,通过几个具体的实施例,详细介绍第一交织器、第一子载波映射器的参数设计方法。
实施例一
本实施例一主要介绍第一交织器的参数设计。
对于第一交织器的交织过程,可以复用上文中提到的交织器1、交织器2、交织器3的流程。但是,由于M个RU的总大小(或者说第一RU的大小)不同于现有的RU,所以需要根据M个RU(或者第一RU)重新设计相应的参数。
(1)确定第一交织器的数据子载波数N SD(即第一RU的数据子载波数N SD)。
具体的,一个RU中包含数据子载波和导频子载波。其中导频子载波用于相位跟踪,减少相位差和频差对接收性能造成的影响,数据子载波用于承载数据,而需要进行交织的部分也是数据子载波,因此第一交织器的数据子载波设计取决于M个RU中的数据子载波的数目。
例如,RU26(26-tone-RU的简写)包含24个数据子载波(N SD=24)和2个导频子载波,而RU52(52-tone-RU的简写)包含48个数据子载波和4个导频子载波,所以,经过RU26和RU52合并的RU78(78-tone-RU的简写),则包含72个数据子载波和6个导频子载波。
例如,RU26包含24个数据子载波和2个导频子载波,而RU106(106-tone-RU的简写)包含102个数据子载波和4个导频子载波,所以,经过RU26和RU106合并的RU132(132-tone-RU的简写),包含126个数据子载波和6个导频子载波。
一些可能的设计中,为了进一步提高数据传输效率,对于合并的新RU,还可以将原本的导频子载波当做数据子载波来使用。例如,针对RU132=RU106+RU26的情况,可以RU26中所有的子载波都作为数据子载波,则由RU106和RU26合并的RU132中,包含128个数据子载波和4个导频子载波。
由此,在本申请实施例中,第一交织器N SD的取值可以总结为[N SD_min,N SD_max]中的任意一个正整数。其中,N SD_min为M个RU中所有RU包含的数据子载波数的总和;N SD_max为M个RU中所有RU包含的子载波数的总和。
应理解,本申请中的[N SD_min,N SD_max]表示的是一个闭区间,即第一交织器N SD的取值最小可以为N SD_min,最大可以为N SD_max
以上讲述的是没有采用双载波调制(DCM)的情况下,第一交织器的数据在载波的取值。如果采用了DCM,则表示同一个数据比特会被映射到两个子载波上,等价于第一RU可以承载的数据子载波减半,如RU78的N SD变为36。
因此,在本申请实施例中,如果进一步考虑是否采用DCM,则第一交织器N SD的可以总结为[N SD_min/Q,N SD_max/Q]中的任意一个正整数。其中,N SD_min为M个RU中所有RU包含的数据子载波数的总和;N SD_max为M个RU中所有RU包含的子载波数的总和;Q为一个数据比特被映射到的数据子载波的数量。
对于Q的取值,还可以理解为载波的调制模式。例如,采用双载波调制模式时,一个数据比特将被映射到的两个数据子载波,则Q=2。未采用双载波调制模式时,一个数据比特将被映射到的一个数据子载波,则Q=1。
需要指出的是,按照当前WLAN标准,未采用双载波调制模式时,默认一个数据比特将被映射到的1个数据子载波,即Q=1。但是,如果未来的WLAN标准中,例如下一代WLAN标准或更下一代的标准中,一个数据比特如果被映射到的更多的数据子载波,则Q的取值也对应变化。例如一个数据比特被映射到四个数据子载波(或者说采用了四载波调制模式),则Q=4。为了便于描述,在后文中,主要以未采用双载波调制模式时,默认一个数据比特将被映射到的1个数据子载波(即Q=1)为例进行介绍。
(2)确定第一交织器的列数N COL、行数N ROW
具体的,列数N COL、行数N ROW满足以下关系:
(N COL×N ROW)/N BPSCS=N SD    (4)
其中,N BPSCS表示每个空间数据流的每个子载波承载的编码后的比特数(number of coded bits per subcarrier per spatial stream)。
以RU78=RU26+RU52为例,RU78对应的数据子载波总数为72,假设N BPSCS为1,则RU78对应的第一交织器的列数N COL、行数N ROW可以是24×3、18×4、12×6或9×8等组合。
一些可能的设计中,对于第一RU对应的列数N COL、行数N ROW,可以取第一RU的周边RU对应的列数N COL、行数N ROW相近的值。这里的周边RU,是指包含的数据子载波数 与第一RU的N SD相近的RU,一般来说,第一RU的周边RU至多可以有两个RU,即:包含的数据子载波数小于第一RU的N SD且与第一RU的N SD最相近的RU(可称为第一RU的左RU),以及包含的数据子载波数大于第一RU的N SD且与第一RU的N SD最相近的RU(可称为第一RU的右RU)。
例如,对于RU78,则可以参考RU52的行列取值(即16×3)和RU106的行列取值(即17×6),取18×4。
例如,对于RU132,则可以参考RU106的行列取值(17×6),取18×7或16×8。
这样,可以使得第一RU对应的第一交织器或第一子载波映射器即(如RU78)的性能与已经过验证的已有RU(即RU52和RU106)对应的交织器或子载波映射器的性能类似,从而保证新设计RU对应的第一交织器或第一子载波映射器的性能,可以减少测试和比较的参数组个数。
与(1)类似,若采用了DCM,则对于N COL和N ROW,还需要N COL或N ROW除以2的操作。
例如,RU78,如果未采用双载波调制时行列取值为18×4,则采用双载波调制时行列取值为9×4。
例如,对于RU132,如果未采用双载波调制时行列取值为18×7或16×8,则采用双载波调制时行列取值为是9×7或16×4。
(3)若包含多个空间数据流,则还需要确定第一交织器的频率旋转参数N ROT
具体的,可以采用以下两种规则确定:
规则一、基于公式
Figure PCTCN2020140439-appb-000008
确定N ROT。其中floor为向下取整的意思,该公式是参考标准802.11ac中40MHz和80MHz带宽下的N ROT取值得出的经验公式。
例如,针对RU78的N ROT取值,未采用DCM时,N ROT-1=floor(72/4)=18;采用DCM时,NROT-2=floor(36/4)=9。
规则二、从[N ROT_min,N ROT_max]中选择使得接收端的误包率(packet error rate,PER)为最低的正整数,或者使得接收端的PER为预设值时所需要的信噪比(signal noise ratio,SNR)为最低的正整数作为N ROT。其中,N ROT_min为RU中包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二交织器的频率旋转参数,N ROT_min为RU中包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三交织器的频率旋转参数。
示例性的,针对RU78的N ROT取值,通过仿真,以参考RU52和RU106N ROT取值。未采用DCM时,在[11,12,13,14,…,29]中间选取使得接收端10%PER所需SNR最低的参数,其中在未采用DCM时,RU52的N ROT取值为11,RU106的N ROT取值为29。采用DCM时,在[2,3,4,5,…,11]中间选取使得接收端10%PER所需SNR最低的参数,其中在采用DCM时,RU52的N ROT取值为2,RU106的N ROT取值为11。
表1给出了由RU26、RU52合并的RU78的一种可能的参数设计方案,以及由RU106、RU26合并的RU132的两种可能的参数设计方案。
表1
Figure PCTCN2020140439-appb-000009
对于78-tone RU,各参数的取值情况如下:
如果未采用双载波调制模式,则N SD=72、N COL=18、N ROW=4×N BPSCS、N ROT-1=18;如果采用双载波调制模式,则N SD=36、N COL=9、N ROW=4×N BPSCS、N ROT-2=9。当然,表1中的参数取值仅为一种可能的示例,在具体实施时还可以有其他取值方式,例如采用双载波调制模式时,各参数取值还可以为:N SD=36、N COL=18、N ROW=2×N BPSCS、N ROT-2=9。
对于132-tone RU,RU106中包含102个数据子载波和4个导频子载波;若直接拼接,则包含126个数据子载波和6个导频子载波。采取同RU78相似的思路,其交织器参数取值如表1中RU132方案一所示:
如果未采用双载波调制模式,则N SD为126,N COL=18,N ROW=7×N BPSCS。如果采用双载波调制模式,则N SD为63,N COL=9、N ROW=7×N BPSCS
为了进一步提高传输效率,对于132-tone RU,可以增加2个数据子载波,减少2个导频子载波。比如,将RU26中所有的子载波都作为数据子载波,则包含128个数据子载波和4个导频子载波,其交织器参数取值如表中RU132方案二所示:
如果未采用双载波调制模式,则N SD为128,N COL=16,N ROW=8×N BPSCS。如果采用双载波调制模式,则N SD为64,N COL=16、N ROW=4×N BPSCS
对于N ROT-3、N ROT-4、N ROT-5、N ROT-6,则可以按照上文所述的规则一和规则二确定取值,具体可以有如下取值:
表2
N ROT 规则一 规则二
N ROT-3 31 29到58之间,10%PER对应SNR最小时的NROT-3
N ROT-4 15 11到29之间,10%PER对应SNR最小时的NROT-4
N ROT-5 32 29到58之间,10%PER对应SNR最小时的NROT-5
N ROT-6 16 11到29之间,10%PER对应SNR最小时的NROT-6
下面给出NROT-1的仿真示例。
发送端4根天线,接收端3根天线,3个空间流,BCC编码,采用调制编码策略MCS5,即64QAM,2/3码率,对于78-tone RU,N COL和N ROW如表1中所取,选取不同的NROT-1,得到不同的PER曲线,选取10%的PER时对应的信噪比SNR进行比较,推算出最优的NROT-1。当NROT-1=11的时候,PER曲线如图12A所示,10%的PER时的SNR为26.35。当NROT-1=29的时候,PER的曲线如图12B所示,10%的PER时的SNR为26.35。
同理,对于其他不同的NROT-1的值,其10%的PER对应的SNR的取值如下:
表3
NROT-1 11 13 15 17 18 19 21 29
SNR 26.35 26.28 26.38 26.25 26.31 26.24 26.27 26.25
通过表3所示的仿真结果可以看出,在以上仿真配置情况下,最优的NROT为19。当然,其他NROT值和19的SNR差不到0.1dB,也可以是候选值。
当然,对于不同的空间流数,不同的调制编码策略MCS,NROT-1的最优值可能会有不同,综合考虑可以选取在多种不同的情况下,最优,次优情况最多的NROT值。
对于NROT-2,NROT-3,NROT-4原理类似,这里不再赘述。
需要指出的是,发送端使用第一交织器在执行具体的交织操作时,确定第一交织器的参数的过程可以只是一个查表过程(如在表1或表2查找参数),或者是一个查映射的过程,上述(1)(2)(3)中的方法步骤仅意在说明本申请实施例中第一交织器的参数设计原理/过程,不一定等同于第一交织器确定参数的过程。
本实施例给出了BCC编码时,针对几种具体的RU(RU26、RU52或RU106等)的合并提供了一种简单的交织方法,并且针对合并的RU对应的统一交织器(即第一交织器)给出了具体的数据子载波数,导频子载波数,交织器参数(如N COL、N ROW以及N ROT等)的设计方法,提高了方案的灵活性,可以有效节省交织器的硬件成本。
实施例二
实施二主要介绍第一子载波映射器的参数设计。实施例二同实施例一的思想类似,可以把多个小RU看成一个合并的大RU,区别在于参数设计为针对LDPC编码的子载波映射器的参数上。
第一子载波映射器参数包括数据子载波数N SD,具体确定方法可以参见上述实施例一中第一交织器的数据子载波数的确定方法,这里不再赘述。
第一子载波映射器参数还包括子载波映射距离参数D TM,可以理解成将连续比特打散的程度。如表4所示。
表4
Figure PCTCN2020140439-appb-000010
D TM满足的一个硬性要求是:D TM为N SD的公约数。
对于D TM的设计方法,包括但不限于以下三种规则:
规则1、从[D TM_min,D TM_max]中选择一个正整数作为D TM,其中D TM_min为包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二子载波映射器的子载波映射距离参数,D TM_max为包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三子载波映射器的子载波映射距离参数。
例如,对于RU78的D TM-1,可以参考周边RU52和RU106的取值,在[3,6]中选择一个正整数,由于在没有DCM时,D TM-1需要为N SD=72的公约数,所以D TM-1可以为4或者6。
规则2、将与所述第一子载波映射器具有相同RU大小的第一交织器的N SD与N COL的比值N SD/N COL作为D TM
例如,对于RU78,没有DCM时,对应RU78的第一交织器的N SD=72,N COL=18,则利用这种规则,则D TM-1=4,而有DCM时,则D TM-2可以为2或者3。
规则3、通过仿真,从[D TM_min,D TM_max]中选择使得接收端的PER为最低的正整数或者使得接收端的PER为预设值(如10%)时所需要的SNR为最低的正整数作为D TM
同理,对于D TM-3,利用规则1,可以为7或者9;利用规则2,可以为7。
同理,对于D TM-4,利用规则1,可以为7或者9;利用规则2,可以为7。
同理,对于D TM-5,利用规则1,可以为8;利用规则2,可以为8。
同理,对于D TM-6,利用规则1,可以为4或者8;利用规则2,可以为8。
需要指出的是,发送端使用第一子载波映射器在执行具体的子载波映射操作时,确定第一子载波映射器的参数的过程可以只是一个查表过程(如在表4中查找参数),或者是示一个查映射的过程,上述的方法步骤仅意在说明本申请实施例中第一子载波映射器的参数设计原理/过程,不一定等同于第一子载波映射器确定参数的过程。
本实施例给出了LDPC编码时,针对几种具体的RU(RU26、RU52或RU106等)的 合并提供了一种简单的子载波映射方法,并且针对合并的RU对应的统一子载波映射器(即第一子载波映射器)给出了具体的数据子载波数,导频子载波数,子载波映射器参数(如D TM)的设计方法,可以有效节省子载波映射器的硬件成本。
实施例三
实施例三主要介绍将M个242-tone RU组成一个合并大RU进行LDPC编码的参数设计。
对于两个242-tone RU合并,4个242-tone RU合并,可以复用484-tone RU和996-tone RU的参数,如下表5所示。
表5
Figure PCTCN2020140439-appb-000011
对于242*3-tone RU,同实施例二的原理类似,参考242*3-tone RU左右已经存在的RU(即484-tone RU和996-tone RU)的D TM,并且考虑D TM-1需要是N SD的公约数,所以D TM-1的取值可以是13,18。
同理D TM-2是9,13,因为802.11ax标准中规定子载波数大于242个tone的RU,不采用BCC编码,因此此处无法通过BCC的参数获取D TM的参数。
当然,也可以通过仿真获取最佳的D TM-1和D TM-2。
本实施例给出了LDPC编码时,针对多个RU242的合并提供了一种简单的子载波映射方法,并且针对合并的RU对应的统一子载波映射器(即第一子载波映射器)给出了具体的数据子载波数,导频子载波数,子载波映射器参数(如D TM)的设计方法,提高了方案的灵活性,可以有效节省子载波映射器的硬件成本。
实施例四
本实施例四主要介绍当M个RU的总带宽大于预设值(如80MHz)时,可以先将M个RU的总带宽进行分段,然后针对每个分段内的RU单独执行如图10所示的方法流程。
请参见图13,为本申请实施例提供的另一种数据处理方法,包括:
S1301、发送端将第一用户的总带宽划分为N个子带宽,其中N个子带宽中的至少一个子带宽由多个RU组成。
S1302、发送端将第一用户的编码后的比特流分配到N个子带宽上。
S1303、发送端将第一子带宽上的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中第一子带宽为至少一个子带宽中的任意一个子带宽。
S1304、发送端使用第一子载波映射器对第一子带宽上的所有编码后的比特流中的所有比特进行重排序。
应理解,如果N个子带宽中有两个子带宽的大小不同,则这两个子带宽分别对应的子载波映射器的参数设计可以不同,比如,如果N个子带宽中第一子带宽和第二子带宽的大小不同,则第一子带宽对应的第一子载波映射器的参数和第二子带宽对应的第二子载波映射器的参数不同。
下面以M个242-tone RU组成一个合并大RU进行LDPC编码的参数设计为例,M大于5。
M大于5,说明M个242-tone RU的总带宽至少大于80MHz。802.11ax最大带宽为160Mhz,此时可以将整个带宽以80Mhz为单位,分成两个部分。每个80MHz称为一个分段(segment)。因此当M大于5时,至少存在2个分段,当然也可以是3个(总带宽为240Mhz),或者4个(总带宽为320Mhz)。总带宽一定,因为整个带宽的部分信道被打孔,而会使得剩下的信道上的子载波,进行等效的合并的RU为242*n-tone RU,这里的n可以是不同的值,如n=1,…,M。
例如,参见图14,图14中每个梯形代表一个242-tone RU,一共12个242-tone RU,即M=12。那么按图14的分段情况,一共存在4个分段。
当存在多个分段时,先以分段为单位进行分段解析。然后在每个分段内,对存在的多个RU进行等效合并,每个分段合并后的RU可能为242-tone RU,484-tone RU,242*3-tone RU,242*4-tone RU。
图15示出了将M个RU的总带宽进行分段时的LDPC子载波映射器流程,如图15所示,发送端先将数据比特依次进行帧校验序列前物理层填充、FEC(LDPC)编码、帧校验序列后物理层填充操作、数据流解析,然后对流解析输出的编码后的数据流进行分段解析,之后针对每个分段,分别进行如下操作:星座映射、子载波映射映操作、空时编码(space time block code,STBC)、每流CSD、空频映射、逆离散傅里叶变换(inverse discrete fourier transform,IDFT)、保护间隔和加窗(guard interval&windowing,GI&W)、模拟和射频(analog&radio frequency,A&RF)等操作,最后通过天线发送出去。其中每个分段中的比特都是采用一个LDPC子载波映射器进行统一的子载波映射映操作。
对于一些特殊情况,比如在第一分段中存在242*2-tone RU,在第二分段存在242*1-tone RU,那么虽然n=3,依然可以按照先分段,再在每个分段内进行LDPC子载波映射的流程。
本实施例四提供了一种先分段,再针对每个分段内的RU单独进行统一子载波映射的方法,提高了方案的灵活性,解决了总带宽较大时LDPC子载波映射器硬件成本高的问题。
以上实施例,介绍的是发送端所执行方法流程,对于接收端所执行方法流程,则是发送端的逆过程。
请参见图16,为本申请实施例提供的另一种数据处理方法,该方法可以应用于图9所示的WLAN系统。方法包括:
S1601、接收端从M个RU或者由M个RU组成的第一RU上获取第一用户的重排序的比特流,其中M个RU或第一RU为分配给第一用户的RU,M为大于1的正整数。
S1602、接收端使用第一逆交织器或第一逆子载波映射器对重排序的比特流中的所有比特的顺序进行复原。
其中,接收端的类型可以是STA,也可以是AP,这里不做限制。分配给第一用户的M个RU或第一RU,同上述图10所示的实施例一致,这里不再赘述。
具体的,对于第一逆交织器的整个过程,是第一交织器的逆过程。如图17所示,接收端在将接收到的信号依次进行CSD、星座点映射后,利用新参数的第一逆交织器进行统一的解交织,然后在M个RU合并的大RU(即第一RU)上按顺序取出比特流,进行流逆解析,最后进行BCC解码。对于第一逆交织器的参数(N SD、N ROW、N ROW、N COL),则同第一交织器的参数(N SD、N ROW、N ROW、N COL)完全对应,这里不再赘述。
同理,对于第一逆子载波映射器的整个过程,则是第一子载波映射器的逆过程。如图18所示,接收端在将接收到的信号分别进行CSD后,利用新参数的第一逆子载波映射器进行统一的逆映射,然后进行逆星座映射操作,之后在M个RU合并的大RU(即第一RU)上按顺序取出比特流,进行流逆解析,最后进行BCC解码。对于第一逆子载波映射器的参数(N SD、D TM),则同第一子载波映射器的参数(N SD、D TM)完全对应,这里不再赘述。
以上各实施例可以相互结合以实现不同的技术效果。
以上介绍了本申请实施例的数据处理方法,以下介绍本申请实施例的数据处理装置。
如图19所示,为本申请实施例提供的第一种发送端的处理装置1900,包括:
顺序比特分配器1901,用于将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;
第一交织器或第一子载波映射器1902,用于对所述编码后的比特流中的所有比特进行重排序。
本申请实施例的数据处理装置1900具有上述方法中发送端的任意功能,此处不再赘述。
如图20所示,为本申请实施例提供的第二种发送端的数据处理装置2000,包括:
处理器2001,用于将第一用户的编码后的比特流中的所有比特输入第一交织器或第一子载波映射器;其中,所述第一用户被分配M个RU或者由M个RU组成的第一RU,M为大于1的正整数;
第一交织器或第一子载波映射器2002,用于对所述编码后的比特流中的所有比特进行重排序。
本申请实施例的数据处理装置2000具有上述方法中发送端的任意功能,此处不再赘述。
如图21所示,为本申请实施例提供的第三种发送端的数据处理装置2100,包括:
处理器2101,用于将第一用户的总带宽划分为N个子带宽,其中所述N个子带宽中的至少一个子带宽由多个RU组成;
顺序比特分配器2102,用于将所述第一用户的编码后的比特流分配到所述N个子带宽上;将第一子带宽上的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述第一子带宽为所述至少一个子带宽中的任意一个子带宽;
第一交织器或第一子载波映射器2103,用于对所述第一子带宽上的所有编码后的比特流中的所有比特进行重排序。
本申请实施例的数据处理装置2100具有上述方法中发送端的任意功能,此处不再赘 述。
以上介绍了本申请实施例中发送端的数据处理装置,以下介绍所述发送端的数据处理装置可能的产品形态。应理解,但凡具备上述图19~图21所述的数据装置的功能的任何形态的产品,都落入本申请实施例的保护范围。还应理解,以下介绍仅为举例,不限制本申请实施例的数据处理装置的产品形态仅限于此。
作为一种可能的产品形态,本申请实施例所述的数据处理装置,可以由一般性的总线体系结构来实现。
所述顺序比特分配器和所述第一交织器,或者所述顺序比特分配器和所述第一子载波映射器,可以由处理器来实现。
可选的,所述数据处理装置还可以包括存储器,所述存储器用于存储所述处理器执行的指令。
作为一种可能的产品形态,本申请实施例所述的数据处理装置,可以由顺序比特分配电路和交织电路实现,或者由顺序比特分配电路和子载波映射电路实现。
可选的,所述数据处理装置还可以包括存储介质,所述存储介质用于存储所述顺序比特分配电路和所述交织电路所执行的指令,或者用于存储所述顺序比特分配电路和所述子载波映射电路所执行的指令。
作为一种可能的产品形态,本申请实施例所述数据处理装置,还可以使用下述来实现:一个或多个FPGA(现场可编程门阵列)、PLD(可编程逻辑器件)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
应理解,上述各种产品形态的数据处理装置,具有上述方法实施例中位于发送端的数据处理装置的任意功能,此处不再赘述。
如图22所示,为本申请实施例提供的接收端的数据处理装置2200,包括:
处理器2201,用于从M个RU或者由M个RU组成的第一RU上获取第一用户的重排序的比特流,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;
第一逆交织器或第一逆子载波映射器2202,用于对所述重排序的比特流中的所有比特的顺序进行复原。
本申请实施例的数据处理装置2200具有上述方法中接收端的任意功能,此处不再赘述。
以上介绍了本申请实施例中接收端的数据处理装置,以下介绍所述接收端的数据处理装置可能的产品形态。应理解,但凡具备上述图22所述的数据装置的功能的任何形态的产品,都落入本申请实施例的保护范围。还应理解,以下介绍仅为举例,不限制本申请实施例的数据处理装置的产品形态仅限于此。
作为一种可能的产品形态,本申请实施例所述的数据处理装置,可以由一般性的总线体系结构来实现。
所述处理器和所述第一逆交织器,或者所述处理器和所述第一逆子载波映射器,可以由处理器来实现。
可选的,所述数据处理装置还可以包括存储器,所述存储器用于存储所述处理器执行的指令。
作为一种可能的产品形态,本申请实施例所述的数据处理装置,可以由处理电路和逆交织电路,或者由处理电路和逆子载波映射电路实现。
可选的,所述数据处理装置还可以包括存储介质,所述存储介质用于存储所述处理电路和所述逆交织电路所执行的指令,或者用于存储所述处理电路和所述逆子载波映射电路所执行的指令。
作为一种可能的产品形态,本申请实施例所述数据处理装置,还可以使用下述来实现:一个或多个FPGA(现场可编程门阵列)、PLD(可编程逻辑器件)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
应理解,上述各种产品形态的数据处理装置,具有上述方法实施例中位于接收端的数据处理装置的任意功能,此处不再赘述。
本申请实施例中所涉及的处理器,可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。
本申请实施例中所涉及的存储器,可以是非易失性存储器,比如硬盘(hard disk drive,HDD)或固态硬盘(solid-state drive,SSD)等,还可以是易失性存储器(volatile memory),例如随机存取存储器(random-access memory,RAM)。存储器是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。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置,用于存储程序指令和/或数据。
本领域普通技术人员可以意识到,结合本文中所公开的实施例中描述的各方法步骤和单元,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。本领域普通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。
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参见前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,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,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接,也可以是电的,机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分,或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(read-only memory,ROM)、随机存取存储器(random access memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到各种等效的修改或替换,这些修改或替换都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以权利要求的保护范围为准。

Claims (39)

  1. 一种数据处理方法,其特征在于,包括:
    将第一用户的编码后的比特流分配到M个资源单元(resource allocation,RU)或者由M个RU组成的第一RU上,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;
    使用第一交织器或第一子载波映射器对所述编码后的比特流中的所有比特进行重排序。
  2. 一种数据处理方法,其特征在于,包括:
    将第一用户的编码后的比特流中的所有比特输入第一交织器或第一子载波映射器;其中,所述第一用户被分配M个RU或者由M个RU组成的第一RU,M为大于1的正整数;
    使用所述第一交织器或所述第一子载波映射器对所述编码后的比特流中的所有比特进行重排序。
  3. 如权利要求1所述的方法,其特征在于,将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,包括:
    将流解析器输出的第一用户的编码后的比特流按照比特顺序依次轮流分配到M个RU或者由M个RU组成的第一RU上。
  4. 一种数据处理方法,其特征在于,包括:
    将第一用户的总带宽划分为N个子带宽,其中所述N个子带宽中的至少一个子带宽由多个RU组成;
    将所述第一用户的编码后的比特流分配到所述N个子带宽上;
    将第一子带宽上的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述第一子带宽为所述至少一个子带宽中的任意一个子带宽,M为大于1的正整数;
    使用第一子载波映射器对所述第一子带宽上的所有编码后的比特流中的所有比特进行重排序。
  5. 如权利要求1-4任一项所述的方法,其特征在于,所述第一交织器或所述第一子载波映射器的数据子载波数N SD的取值为[N SD_min/Q,N SD_max/Q]中的任意一个正整数;
    其中,N SD_min为所述M个RU中所有RU包含的数据子载波数的总和,N SD_max为所述M个RU中所有RU包含的子载波数的总和;Q为一个数据比特被映射到的数据子载波的数量。
  6. 如权利要求5所述的方法,其特征在于,所述第一交织器的列数N COL、行数N ROW满足以下关系:
    (N COL×N ROW)/N BPSCS=N SD
    其中,N BPSCS为每个空间数据流的每个子载波承载的编码后的比特数。
  7. 如权利要求6所述的方法,其特征在于,若所述编码后的比特流中包含多个空间数据流,则所述方法还包括:通过以下几种方式中的任意一种方式确定所述第一交织器的频率旋转参数N ROT
    方式一、基于公式
    Figure PCTCN2020140439-appb-100001
    确定N ROT
    方式二、从[N ROT_min,N ROT_max]中选择使得接收端的误包率(packet error rate,PER)为最低的正整数或者使得接收端的PER为预设值时所需要的信噪比(signal noise ratio,SNR)为最低的正整数作为N ROT;其中,N ROT_min为RU中包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二交织器的频率旋转参数,N ROT_min为RU中包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三交织器的频率旋转参数。
  8. 如权利要求7所述的方法,其特征在于,所述M个RU包括:一个包含26个子载波的资源单元(26-tone resource unit,26-tone RU)、一个52-tone RU;
    未采用双载波调制模式时,N SD=72、N COL=18、N ROW=4×N BPSCS、N ROT=18。
  9. 如权利要求7所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、一个106-tone RU;
    未采用双载波调制模式时,N SD为126或128;
    采用双载波调制模式时,N SD为63或64。
  10. 如权利要求9所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、一个106-tone RU;
    未采用双载波调制模式时的N ROW是采用双载波调制模式时的N ROW的两倍。
  11. 如权利要求9所述的方法,其特征在于,未采用双载波调制模式时,N ROT=31。
  12. 如权利要求5所述的方法,其特征在于,所述第一子载波映射器的子载波映射距离参数D TM为N SD的公约数,其中N SD为所述第一子载波映射器的数据子载波数。
  13. 如权利要求12所述的方法,其特征在于,所述方法还包括:通过以下几种方式中的任意一种方式确定D TM
    方式一、从[D TM_min,D TM_max]中选择一个正整数作为D TM,其中D TM_min为包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二子载波映射器的子载波映射距离参数,D TM_max为包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三子载波映射器的子载波映射距离参数;
    方式二、从[D TM_min,D TM_max]中选择使得接收端的PER为最低的正整数或者使得接收端的PER为预设值时所需要的SNR为最低的正整数作为D TM
    方式三、将与所述第一子载波映射器具有相同RU大小的第一交织器的N SD与N COL的比值N SD/N COL作为D TM
  14. 如权利要求12所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、一个52-tone RU;
    未采用双载波调制模式时,N SD=72,D TM为4或6;
    采用双载波调制模式时,N SD=36,D TM为2或3。
  15. 如权利要求12所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、一个106-tone RU;
    未采用双载波调制模式时,N SD为126或128;
    采用双载波调制模式时,N SD为63或64。
  16. 如权利要求12所述的方法,其特征在于,所述M个RU为:M个242-tone RU;
    M=2时,未采用双载波调制模式时,N SD为468,D TM为12,采用双载波调制模式时,N SD为234,D TM为9;
    M=3时,未采用双载波调制模式时,N SD为702,D TM为13或18,采用双载波调制模式时,N SD为351,D TM为9或13;
    M=4时,未采用双载波调制模式时,N SD为980,D TM为20,采用双载波调制模式时,N SD为490,D TM为14。
  17. 一种数据处理方法,其特征在于,包括:
    从M个RU或者由M个RU组成的第一RU上获取第一用户的重排序的比特流,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;
    使用第一逆交织器或第一逆子载波映射器对所述重排序的比特流中的所有比特的顺序进行复原。
  18. 如权利要求17所述的方法,其特征在于,所述第一逆交织器或所述第一逆子载波映射器的数据子载波数N SD的取值为[N SD_min/Q,N SD_max/Q]中的任意一个正整数;
    其中,N SD_min为所述M个RU中所有RU包含的数据子载波数的总和,N SD_max为所述M个RU中所有RU包含的子载波数的总和;Q为一个数据比特被映射到的数据子载波的数量。
  19. 如权利要求18所述的方法,其特征在于,所述第一逆交织器的列数N COL、行数N ROW满足以下关系:
    (N COL×N ROW)/N BPSCS=N SD
    其中,N BPSCS为每个空间数据流的每个子载波承载的编码后的比特数。
  20. 如权利要求19所述的方法,其特征在于,若所述编码后的比特流中包含多个空间数据流,则所述方法还包括:通过以下几种方式中的任意一种方式确定所述第一逆交织器的频率旋转参数N ROT
    方式一、基于公式
    Figure PCTCN2020140439-appb-100002
    确定N ROT
    方式二、从[N ROT_min,N ROT_max]中选择使得接收端的PER为最低的正整数或者使得接收端的PER为预设值时所需要的SNR为最低的正整数作为N ROT;其中,N ROT_min为RU中包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二逆交织器的频率旋转参数,N ROT_min为RU中包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三逆交织器的频率旋转参数。
  21. 如权利要求20所述的方法,其特征在于,所述M个RU包括:一个包含26个子载波的资源单元26-tone RU、一个52-tone RU;
    未采用双载波调制模式时,N SD=72、N COL=18、N ROW=4×N BPSCS
  22. 如权利要求20所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、 一个106-tone RU;
    未采用双载波调制模式时,N SD为126或128;
    采用双载波调制模式时,N SD为63或64。
  23. 如权利要求22所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、一个106-tone RU;
    未采用双载波调制模式时的N ROW是采用双载波调制模式时的N ROW的两倍。
  24. 如权利要求22所述的方法,其特征在于,未采用双载波调制模式时,N ROT=31。
  25. 如权利要求18所述的方法,其特征在于,所述第一逆子载波映射器的子载波映射距离参数D TM为N SD的公约数,其中N SD为所述第一逆子载波映射器的数据子载波数。
  26. 如权利要求18所述的方法,其特征在于,所述方法还包括:通过以下几种方式中的任意一种方式确定D TM
    方式一、从[D TM_min,D TM_max]中选择一个正整数作为D TM,其中D TM_min为包含的数据子载波数小于N SD且与N SD最相近的RU对应的第二逆子载波映射器的子载波映射距离参数,D TM_max为包含的数据子载波数大于N SD且与N SD最相近的RU对应的第三逆子载波映射器的子载波映射距离参数;
    方式二、从[D TM_min,D TM_max]中选择使得接收端的PER为最低的正整数或者使得接收端的PER为预设值时所需要的SNR为最低的正整数作为D TM
    方式三、将与所述第一逆子载波映射器具有相同RU大小的第一逆交织器的N SD与N COL的比值N SD/N COL作为D TM
  27. 如权利要求18所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、一个52-tone RU;
    未采用双载波调制模式时,N SD=72,D TM为4或6;
    采用双载波调制模式时,N SD=36,D TM为2或3。
  28. 如权利要求18所述的方法,其特征在于,所述M个RU包括:一个26-tone RU、一个106-tone RU;
    未采用双载波调制模式时,N SD为126或128;
    采用双载波调制模式时,N SD为63或64。
  29. 如权利要求18所述的方法,其特征在于,所述M个RU为:M个242-tone RU;
    M=2时,未采用双载波调制模式时,N SD为468,D TM为12,采用双载波调制模式时,N SD为234,D TM为9;
    M=3时,未采用双载波调制模式时,N SD为702,D TM为13或18,采用双载波调制模式时,N SD为351,D TM为9或13;
    M=4时,未采用双载波调制模式时,N SD为980,D TM为20,采用双载波调制模式时,N SD为490,D TM为14。
  30. 一种数据处理装置,其特征在于,包括:
    顺序比特分配器,用于将第一用户的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M 为大于1的正整数;
    第一交织器或第一子载波映射器,用于对所述编码后的比特流中的所有比特进行重排序。
  31. 一种数据处理装置,其特征在于,包括:
    处理器,用于将第一用户的编码后的比特流中的所有比特输入第一交织器或第一子载波映射器;其中,所述第一用户被分配M个RU或者由M个RU组成的第一RU,M为大于1的正整数;
    第一交织器或第一子载波映射器,用于对所述编码后的比特流中的所有比特进行重排序。
  32. 一种数据处理装置,其特征在于,包括:
    顺序比特分配器,用于将第一用户的总带宽划分为N个子带宽,其中所述N个子带宽中的至少一个子带宽由多个RU组成;将所述第一用户的编码后的比特流分配到所述N个子带宽上;将第一子带宽上的编码后的比特流分配到M个RU或者由M个RU组成的第一RU上,其中所述第一子带宽为所述至少一个子带宽中的任意一个子带宽,M为大于1的正整数;
    第一子载波映射器,用于对所述第一子带宽上的所有编码后的比特流中的所有比特进行重排序。
  33. 一种数据处理装置,其特征在于,包括:
    处理器,用于从M个RU或者由M个RU组成的第一RU上获取第一用户的重排序的比特流,其中所述M个RU或所述第一RU为分配给所述第一用户的RU,M为大于1的正整数;
    第一逆交织器或第一逆子载波映射器,用于对所述重排序的比特流中的所有比特的顺序进行复原。
  34. 一种数据处理装置,其特征在于,包括处理器和存储器,所述存储器存储有可被所述处理器执行的指令,所述处理器通过执行所述存储器存储的指令,执行如权利要求1-16或17-29中任一项所述的方法。
  35. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机程序,所述计算机程序包括程序指令,所述程序指令在被计算机执行时,使所述计算机执行如权利要求1-16或17-29中任一项所述的方法。
  36. 一种计算机程序产品,其特征在于,所述计算机程序产品包含有指令,当所述指令在计算机上运行时,使得所述计算机执行如权利要求1-16或17-29中任一项所述的方法。
  37. 一种通信装置,其特征在于,包括处理器和接口电路;所述接口电路,用于接收代码指令并传输至所述处理器;所述处理器运行所述代码指令以执行如权利要求1-16或17-29中任一项所述的方法。
  38. 一种芯片,其特征在于,所述芯片与存储器耦合,用于读取并执行所述存储器中存储的程序指令,实现如权利要求1-16或17-29中任一项所述的方法。
  39. 一种通信系统,其特征在于,包括:
    发送端,用于执行如权利要求1-16中任一项所述的方法;和,
    接收端,用于执行如权利要求17-29中任一项所述的方法。
PCT/CN2020/140439 2020-01-08 2020-12-28 一种数据处理方法、装置 WO2021139558A1 (zh)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP20912670.5A EP4075694A4 (en) 2020-01-08 2020-12-28 DATA PROCESSING METHOD AND DEVICE
BR112022013498A BR112022013498A2 (pt) 2020-01-08 2020-12-28 Método e aparelho de processamento de dados
AU2020420057A AU2020420057A1 (en) 2020-01-08 2020-12-28 Data processing method and apparatus
MX2022008489A MX2022008489A (es) 2020-01-08 2020-12-28 Metodo y aparato de procesamiento de datos.
CA3167142A CA3167142A1 (en) 2020-01-08 2020-12-28 Data processing method and apparatus
JP2022541939A JP2023509761A (ja) 2020-01-08 2020-12-28 データ処理方法及び機器
KR1020227026725A KR20220123682A (ko) 2020-01-08 2020-12-28 데이터 프로세싱 방법 및 장치
US17/859,702 US11943052B2 (en) 2020-01-08 2022-07-07 Data processing method and apparatus
US18/425,899 US20240171310A1 (en) 2020-01-08 2024-01-29 Data processing method and apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010019316.0A CN113098655A (zh) 2020-01-08 2020-01-08 一种数据处理方法、装置
CN202010019316.0 2020-01-08

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/859,702 Continuation US11943052B2 (en) 2020-01-08 2022-07-07 Data processing method and apparatus

Publications (1)

Publication Number Publication Date
WO2021139558A1 true WO2021139558A1 (zh) 2021-07-15

Family

ID=76663437

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/140439 WO2021139558A1 (zh) 2020-01-08 2020-12-28 一种数据处理方法、装置

Country Status (10)

Country Link
US (2) US11943052B2 (zh)
EP (1) EP4075694A4 (zh)
JP (1) JP2023509761A (zh)
KR (1) KR20220123682A (zh)
CN (3) CN116709521A (zh)
AU (1) AU2020420057A1 (zh)
BR (1) BR112022013498A2 (zh)
CA (1) CA3167142A1 (zh)
MX (1) MX2022008489A (zh)
WO (1) WO2021139558A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11902022B2 (en) 2020-01-28 2024-02-13 Lg Electronics Inc. Method and apparatus for receiving PPDU on which BCC interleaving has been performed in Multi-RU in wireless LAN system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3910863A1 (en) * 2020-04-23 2021-11-17 Samsung Electronics Co., Ltd. Communication based on a multi-resource unit in wireless local area network system
CN116346565B (zh) * 2023-05-31 2023-08-04 极芯通讯技术(南京)有限公司 填充比特的删除方法、终端设备及存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107733557A (zh) * 2016-08-12 2018-02-23 中兴通讯股份有限公司 一种数据发送的方法及装置、通信设备
US20190090224A1 (en) * 2014-08-06 2019-03-21 Lg Electronics Inc. Method and device for allocating wireless resources for transmitting or receiving data in wireless lan
WO2019089207A1 (en) * 2017-11-06 2019-05-09 Qualcomm Incorporated Techniques for interleaving in single user preamble puncturing
WO2019173240A1 (en) * 2018-03-06 2019-09-12 Qualcomm Incorporated Systems and methods of communicating via sub-bands in wireless communication networks

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3146782B1 (en) * 2014-06-12 2022-03-23 Huawei Technologies Co., Ltd. System and method for orthogonal frequency division multiple access
WO2015195582A1 (en) * 2014-06-16 2015-12-23 Qualcomm Incorporated Interleaving in ofdma data tone plans
US9894663B2 (en) * 2014-07-23 2018-02-13 Qualcomm Incorporated Systems and methods for improved communication efficiency in wireless networks
US10028284B2 (en) * 2014-08-14 2018-07-17 Qualcomm Incorporated Systems and methods for improved communication efficiency in wireless networks
US9844028B2 (en) * 2014-08-15 2017-12-12 Qualcomm Incorporated Systems and methods for improved communication efficiency in wireless networks
EP3348011B1 (en) * 2015-09-11 2020-04-08 Interdigital Patent Holdings, Inc. Multiple resource unit allocation for ofdma wlan
US10110406B2 (en) * 2015-10-30 2018-10-23 Qualcomm Incorporated Systems and methods for channel interleaving in wireless networks
US10200228B2 (en) * 2015-12-17 2019-02-05 Mediatek Inc. Interleaver design for dual sub-carrier modulation in WLAN
US11044056B2 (en) * 2018-02-01 2021-06-22 Mediatek Singapore Pte. Ltd. Enhanced resource unit allocation schemes for OFDMA transmission in WLAN
EP3910863A1 (en) * 2020-04-23 2021-11-17 Samsung Electronics Co., Ltd. Communication based on a multi-resource unit in wireless local area network system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190090224A1 (en) * 2014-08-06 2019-03-21 Lg Electronics Inc. Method and device for allocating wireless resources for transmitting or receiving data in wireless lan
CN107733557A (zh) * 2016-08-12 2018-02-23 中兴通讯股份有限公司 一种数据发送的方法及装置、通信设备
WO2019089207A1 (en) * 2017-11-06 2019-05-09 Qualcomm Incorporated Techniques for interleaving in single user preamble puncturing
WO2019173240A1 (en) * 2018-03-06 2019-09-12 Qualcomm Incorporated Systems and methods of communicating via sub-bands in wireless communication networks

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ROSS JIAN YU (HUAWEI): "Multiple RU discussion", IEEE DRAFT; 11-19-1914-01-00BE-MULTIPLE-RU-DISCUSSION, vol. 802.11 EHT; 802.11be, no. 1, 19 December 2019 (2019-12-19), Piscataway, NJ USA, pages 1 - 8, XP068164965 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11902022B2 (en) 2020-01-28 2024-02-13 Lg Electronics Inc. Method and apparatus for receiving PPDU on which BCC interleaving has been performed in Multi-RU in wireless LAN system
US11984981B2 (en) 2020-01-28 2024-05-14 Lg Electronics Inc. Method and apparatus for receiving PPDU on which BCC interleaving has been performed in multi-RU in wireless LAN system

Also Published As

Publication number Publication date
BR112022013498A2 (pt) 2022-09-13
CN116709520B (zh) 2024-03-01
EP4075694A4 (en) 2023-01-11
MX2022008489A (es) 2022-10-27
US20220353015A1 (en) 2022-11-03
US20240171310A1 (en) 2024-05-23
EP4075694A1 (en) 2022-10-19
CA3167142A1 (en) 2021-07-15
CN116709521A (zh) 2023-09-05
JP2023509761A (ja) 2023-03-09
AU2020420057A1 (en) 2022-08-04
CN113098655A (zh) 2021-07-09
KR20220123682A (ko) 2022-09-08
US11943052B2 (en) 2024-03-26
CN116709520A (zh) 2023-09-05

Similar Documents

Publication Publication Date Title
WO2021139558A1 (zh) 一种数据处理方法、装置
US11122556B2 (en) Communication method and communication apparatus
US10200228B2 (en) Interleaver design for dual sub-carrier modulation in WLAN
CN108370285B (zh) 生成数据单元的物理层phy前导码字段的方法和装置
WO2020007350A1 (zh) 通信方法、装置及设备
EP2697923A1 (en) Bit allocation for 40 mhz channels
WO2021180203A1 (zh) 数据传输方法及设备、芯片系统、计算机可读存储介质
US20210321414A1 (en) Data communication method and device using multiple mcs in wireless communication system
WO2021180236A1 (en) Modulation and binary convolutional coding for mutiple resource units in wireless network
JP2023530024A (ja) リソースインジケーション方法、アクセスポイント、及びステーション
US20230118836A1 (en) Data Frame Sending Method, Data Frame Receiving Method, and Communication Apparatus
US20240015715A1 (en) Apparatus and method of communication based on extended bandwidth and multi-resource unit in wireless local area network system
US8913478B2 (en) Methods and apparatus for interleaving in OFDM/OFDMA systems
US11611417B2 (en) Physical layer parsing for multiple input multiple output (MIMO) punctured transmission and apparatus
WO2021244497A1 (zh) 一种支持不等调制的交织和子载波映射方法以及相关装置
WO2022028588A1 (en) Coverage recovery in reduced capability wireless devices
WO2022141326A1 (zh) 交织、解交织方法及装置

Legal Events

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

Ref document number: 20912670

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022541939

Country of ref document: JP

Kind code of ref document: A

Ref document number: 3167142

Country of ref document: CA

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112022013498

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 2020912670

Country of ref document: EP

Effective date: 20220714

ENP Entry into the national phase

Ref document number: 20227026725

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2020420057

Country of ref document: AU

Date of ref document: 20201228

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 112022013498

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20220706