WO2018149389A1 - Procédé de traitement de données, dispositif et terminal de transmission - Google Patents

Procédé de traitement de données, dispositif et terminal de transmission Download PDF

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Publication number
WO2018149389A1
WO2018149389A1 PCT/CN2018/076628 CN2018076628W WO2018149389A1 WO 2018149389 A1 WO2018149389 A1 WO 2018149389A1 CN 2018076628 W CN2018076628 W CN 2018076628W WO 2018149389 A1 WO2018149389 A1 WO 2018149389A1
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Prior art keywords
index
sequence
encoded
index sequences
bit sequence
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PCT/CN2018/076628
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English (en)
Chinese (zh)
Inventor
许进
徐俊
陈梦竹
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中兴通讯股份有限公司
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Publication of WO2018149389A1 publication Critical patent/WO2018149389A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H04L1/0043—Realisations of complexity reduction techniques, e.g. use of look-up tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes

Definitions

  • the present disclosure relates to wireless communication technologies, for example, to a data processing method, apparatus, and transmitting end.
  • the channel coding service is a separate part of the mobile communication system, which guarantees the reliability, accuracy and effectiveness of information transmission.
  • the most urgent need for the 5G mobile phone mobile communication standard 5G is to meet a large increase in spectral efficiency and reliability.
  • the Polar code is a code that uses a generator matrix to meet the requirements for communication throughput (Throughput) and Latency in the 5G New RAT.
  • the code word encoded by the Polar code can be expressed as:
  • u (u 1 ,..., u N )
  • u consists of information bits and frozen bits
  • G N is a generator matrix. Representing n times Kronecker product operations on matrix F 2
  • B N is a bit reverse order permutation matrix.
  • polarization coding information bits or freeze bits are generally placed on different polarization subchannels, and the polarization subchannels involved in coding need to be selected.
  • subchannel selection is equivalent to selecting the corresponding row or column in the generator matrix.
  • the selection of the generation matrix or the row or column in the generation matrix is fixed, and cannot be adapted to the needs of different application scenarios.
  • the embodiment of the present application provides a data processing method, including:
  • the transmitting end selects an index sequence from a plurality of preset index sequences according to the feature parameter corresponding to the bit sequence to be encoded;
  • the transmitting end encodes the bit sequence to be encoded according to the selected index sequence, and sends the encoded code block to the receiving end.
  • the embodiment of the present application further provides a data processing apparatus, including:
  • a storage module configured to: save multiple preset index sequences
  • the selecting module is configured to: select an index sequence from the plurality of preset index sequences according to the feature parameter corresponding to the bit sequence to be encoded;
  • the encoding module is configured to: encode the bit sequence to be encoded according to the selected index sequence;
  • the sending module is configured to: send the coding block coded by the coding module to the receiving end.
  • the embodiment of the present application further provides a transmitting end, including a memory and a processor, where:
  • a processor configured to read the program code to perform the following processing:
  • the embodiment of the present application further provides a computer readable storage medium storing computer executable instructions for performing the above method.
  • the foregoing solution selects a corresponding index sequence according to the feature parameter corresponding to the bit sequence to be encoded, and then performs coding according to the selected index sequence, so that it can adapt to different application scenarios and improve coding performance.
  • 1 is a flow chart of a data processing method of the first embodiment.
  • Fig. 2 is a block diagram showing a data processing device of the first embodiment.
  • Fig. 3 is a schematic structural view of a transmitting end.
  • This embodiment provides a data processing method, as shown in FIG. 1, including:
  • Step 110 The transmitting end selects an index sequence from a plurality of preset index sequences according to the feature parameter corresponding to the bit sequence to be encoded.
  • the transmitting end of this embodiment may be a base station, and may be, but not limited to, a g-Node B (gB), or a user equipment (User Equipment, UE).
  • the receiving end in this embodiment may be a UE. It can also be a base station, which can be, but is not limited to, a gNB.
  • Step 120 The transmitting end encodes the bit sequence to be encoded according to the selected index sequence, and sends the encoded code block to the receiving end.
  • the elements in the multiple preset index sequences are indexes of rows or columns in the preset coding matrix, that is, an index sequence is corresponding to extracting corresponding rows or columns from the preset coding matrix.
  • the index sequence is [2, 4, 7, 8, 1, 3, 5, 7, 9,...], where each element represents a row index or column index in the encoding matrix. Selecting the K elements in the row index is equivalent to selecting the K row of the matrix.
  • the index in the index sequence may be pre-generated according to different lengths, supporting code rate, channel type, Modulation Coding Scheme (MCS) and the like.
  • the length of the plurality of preset index sequences is a power of 2 (that is, equal to 2 i , i is a positive integer), wherein the length of the index sequence refers to the number of elements in the index sequence .
  • the preset coding matrix can be pre-stored on the transmitting end, or can be calculated by using a generation algorithm when in use.
  • the plurality of preset index sequences have a nested relationship, that is,
  • the plurality of preset index sequences include at least two index sequences of different lengths, and at least two index sequences having different lengths satisfy that: the index sequence having a larger length includes all elements in the index sequence having a smaller length; or
  • the plurality of preset index sequences include at least two index sequences of different lengths, and any two index sequences of different lengths are satisfied: the index sequence with a larger length includes all elements in the index sequence with a smaller length. .
  • An index sequence with a nested relationship can use the index of the row or column of the same coding matrix as an element, thereby saving the space required for the encoding matrix storage.
  • the plurality of preset index sequences may also have no nested relationship between them, namely:
  • the plurality of preset index sequences include at least two index sequences of different lengths, and at least two index sequences having different lengths satisfy: at least a predetermined proportion of elements and a length of the index sequence having a small length The elements in the index sequence are different; or
  • the plurality of preset index sequences include at least two index sequences of different lengths, and any two index sequences of different lengths satisfy: at least a predetermined proportion of elements and lengths in the index sequence having a small length The elements in the index sequence are different.
  • the predetermined ratio may be, for example, 5%, 10%, or 20%.
  • An index sequence that does not have a nested relationship makes it possible to optimize the matrix corresponding to the index sequence separately.
  • the length of the bit sequence to be encoded is K bits
  • the length of the selected index sequence is N1
  • the predetermined coding matrix is an N ⁇ N matrix, where K is a positive integer.
  • N1 and N are both powers of 2, and K ⁇ N1 ⁇ N.
  • the transmitting end encodes the bit sequence to be encoded according to the selected index sequence, including:
  • the transmitting end selects K rows or K columns corresponding to K elements in the selected index sequence from the N ⁇ N matrix, and encodes the bit sequence to be encoded; or
  • the transmitting end pre-codes some or all of the bit sequences in the bit sequence to be encoded to obtain a check sequence of length P bits, and the length of the bit sequence to be encoded and the check sequence is a bit sequence of K+P bits; then selecting K+P rows or K+P columns corresponding to K+P elements in the selected index sequence from the N ⁇ N matrix, for the K+P bits
  • the bit sequence is encoded, where K + P ⁇ N1.
  • the coding mode used by the precoding may be one or a combination of the following coding modes: parity coding, cyclic redundancy check coding, BCH coding, Hamming code coding, convolutional coding, and matrix coding. , Turbo coding, low density parity check coding, Reed Muller coding, hash coding and other coding methods.
  • the N ⁇ N matrix at this time is a generator matrix used in polarization encoding.
  • the polarised subchannel can be considered to be related to the row index of the coding matrix.
  • the introduction of the index sequence actually rearranges the row (or column) index of the coding matrix, and then selects the K rows corresponding to the K elements in the selected index sequence, and actually selects K polarization channels.
  • the remaining unselected rows correspond to frozen bits of zero. If the K+P row corresponding to the K+P elements in the selected index sequence is selected, the P row is the corresponding P freeze bits that are not 0.
  • the feature parameter corresponding to the bit sequence to be encoded includes one or more of the following feature parameters:
  • the working mode refers to an operating mode when the transmitting end processes the bit sequence to be encoded, and may include an in-band mode, an out-band mode, and a stand alone mode;
  • the working scenario refers to the working scenario when the transmitting end processes the bit sequence to be encoded, and may include enhanced mobile broadband (eMBB), ultra-reliable low-latency (URLLC), and massive machine communication ( Massive Machine Type Communication, mMTC), etc.
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency
  • mMTC massive machine communication
  • Coverage level refers to the coverage level when the transmitting end processes the bit sequence to be encoded, and may include a general coverage level, an enhanced coverage level or an extreme coverage level;
  • User equipment type which refers to the type of user equipment (User category), which is the user equipment type (UE category) of the network device, such as the base station.
  • the user equipment type can include T1 values, which are UE category 0 to UE category T1. -1, the size of the receiving buffer of the user equipment type with different parameter values is different;
  • the type of the radio network temporary identifier (RNTI) used for scrambling the bit sequence to be encoded may include T5 different types of radio network temporary identifiers (RNTIs);
  • the transmission type refers to the transmission type of the coding block, such as the first transmission or retransmission
  • Modulation Coding Scheme (MCS) level which refers to the MCS level used in the modulation and coding of the bit sequence to be encoded, and the MCS level may include T2 values, respectively, MCS 0 to MCS T2-1;
  • the control information format is a control information format that is used when the bit sequence to be encoded is control information, and may include a T4 type downlink control information format (Downlink control information format, DCI format) and a T5 type uplink control channel format (PUCCH format). );
  • the search space refers to a search space carrying a coded block, and may include a common search space or a dedicated search space;
  • the channel state information (CSI) process number refers to the CSI process number fed back by the receiving end, and may include T6 different CSI process numbers;
  • CQI level which refers to the CQI level of the channel carrying the coded block, and may include T7 values, respectively CQI0 to CQI T7-1;
  • the link direction refers to the direction of the link carrying the coded block, which may be the downlink direction from the base station or the relay to the terminal, or the uplink direction from the terminal to the base station or the relay;
  • the aggregation level of the Control Channel Element refers to the aggregation level of the CCE carrying the coded block, and may have T3 values, which are CCE aggregation level 0 to CCE aggregation level T3-1;
  • the subframe type refers to a subframe type that carries the coded block, and may include an ABS (Almost Blank Subframe, ABS) subframe type or a None-ABS subframe type.
  • ABS Almost Blank Subframe
  • Channel type which refers to a channel type of a channel carrying a coded block, and may include a data channel, a control channel, a broadcast channel, a paging channel, and the like;
  • the carrier frequency band refers to the carrier frequency band of the channel carrying the coding block, and may include the frequency band of 6 GHz and above and the frequency band of 6 GHz or lower.
  • the encoding block in the text refers to a coding block obtained by encoding the bit sequence to be encoded, unless otherwise defined.
  • the above characteristic parameters can be represented by the name/identification and value of the feature parameter.
  • the plurality of preset index sequences have at least one of the following characteristics:
  • Feature 1 includes index sequences of different lengths
  • Feature 2 includes an index sequence with different highest code rates supported
  • Feature 3 includes an index sequence with different minimum code rates supported
  • Feature 4 including the supported modulation coding mode MCS sets different index sequences
  • Feature 5 includes a supported channel quality indicating a different index sequence of the CQI set
  • Feature 6 Includes a different index sequence for the supported coverage level set.
  • the transmitting end when the transmitting end selects an index sequence from a plurality of preset index sequences according to the feature parameter corresponding to the bit sequence to be encoded, the transmitting end may select one or more of the following manners:
  • the multiple preset index sequences include index sequences of different lengths, and the transmitting end determines a maximum length LCB max of the coding block according to a feature parameter corresponding to the bit sequence to be encoded, from the multiple pre- selection bias length is greater than or equal to the index sequence LCB max, or select the length LCB max index sequence provided is greater than an index sequence preset threshold value; when the length is less than LCB max, in part to bit block encoded in the Repeat so that the length after the repetition is equal to LCB max .
  • the preset threshold is, for example, 5%, 10%, or 20%.
  • the multiple preset index sequences include the index sequence with the highest supported code rate, and the transmitting end determines the highest code rate Rmax of the coded block according to the feature parameter corresponding to the bit sequence to be encoded. Determining an index sequence having a highest code rate greater than or equal to Rmax among the plurality of preset index sequences;
  • the multiple preset index sequences include an index sequence with a different minimum code rate, and the transmitting end determines a minimum code rate Rmin of the coded block according to a feature parameter corresponding to the bit sequence to be encoded.
  • An index sequence in which a minimum code rate is less than or equal to Rmin is selected among a plurality of preset index sequences;
  • the multiple preset index sequences include different index sequences of the supported CQI sets, and the transmitting end is configured from the multiple preset index sequences according to the CQI level corresponding to the bit sequence to be encoded.
  • the CQI set of the selected CQI set is selected to include the index sequence of the corresponding CQI level; the CQI level corresponding to the bit sequence to be encoded may be directly obtained according to the CQI information fed back by the terminal, or may be determined according to the CSI process number fed back by the terminal, The CQI requirements can be determined based on the CSI process number.
  • the multiple preset index sequences include different index sequences of the supported MCS sets, and the transmitting end is configured from the multiple preset index sequences according to the MCS level corresponding to the bit sequence to be encoded. Selecting an index sequence of the corresponding MCS level in the supported MCS set;
  • the multiple preset index sequences include different index sequences of different coverage level sets, and the transmitting end uses the multiple coverage sequence according to the coverage level corresponding to the bit sequence to be encoded.
  • the set of coverage levels supported by the selection includes an index sequence of the corresponding coverage level.
  • the method When the method is selected in multiple manners, for example, it may be selected according to the requirement of the first method according to the maximum length of the coding block, and then according to the requirement of the second highest rate of the coding block according to the second method. If you can't choose, you can adjust the selection strategy or reset the index sequence.
  • the maximum length LCB max of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be encoded:
  • the aggregation level of the control channel unit CCE is the aggregation level of the control channel unit CCE.
  • the transmitting end determines the maximum length LCB max of the coding block, if the maximum length of the coding block can be directly selected, the maximum length of the selected coding block can be directly used as the LCB max . Otherwise, the LCB max can be determined based on the maximum length of the coding block required by other parameters.
  • the LCB max can be determined based on the highest code rate and/or the lowest code rate of the coded block required by other parameters.
  • the embodiment of the present application further provides a data processing apparatus, as shown in FIG. 2, including:
  • the storage module 10 is configured to: save a plurality of preset index sequences
  • the selecting module 20 is configured to: select an index sequence from the plurality of preset index sequences according to the feature parameter corresponding to the bit sequence to be encoded;
  • the encoding module 30 is configured to: encode the bit sequence to be encoded according to the selected index sequence;
  • the sending module 40 is configured to: send the coding block coded by the coding module to the receiving end.
  • the storage module further stores a preset encoding matrix
  • the elements in the plurality of preset index sequences are indexes of rows or columns in a preset encoding matrix; the lengths of the plurality of preset index sequences are all powers of 2, wherein the length of the index sequence refers to an index sequence The number of elements in the.
  • the plurality of preset index sequences stored by the storage module include at least two index sequences of different lengths, and at least two index sequences having different lengths satisfy: the index sequence with a larger length includes an index with a smaller length. All elements in the sequence; or
  • the plurality of preset index sequences stored by the storage module include at least two index sequences of different lengths, and any two index sequences of different lengths are satisfied: the index sequence with a larger length includes a smaller length. All elements in the index sequence; or
  • the plurality of preset index sequences stored by the storage module include at least two index sequences of different lengths, and at least two index sequences having different lengths satisfy: at least a predetermined proportion of the index sequences having a small length The element is different from the element in the index sequence of the larger length; or
  • the plurality of preset index sequences stored by the storage module include at least two index sequences of different lengths, and any two index sequences of different lengths satisfy: at least a predetermined proportion of the index sequence having a small length
  • the elements are different from the elements in the longer index sequence.
  • the length of the bit sequence to be encoded is K bits, the length of the selected index sequence is N1, and the predetermined coding matrix is an N ⁇ N matrix, where K is a positive integer, and N1 and N are both A power of 2, and K ⁇ N1 ⁇ N.
  • the encoding module encodes the bit sequence to be encoded according to the selected index sequence, including:
  • the selecting module selects an index sequence from the plurality of preset index sequences according to the feature parameter corresponding to the bit sequence to be encoded, where the feature parameter corresponding to the bit sequence to be encoded includes the following feature parameters One or more:
  • Channel quality indicates CQI level
  • the selecting module selects one index sequence from a plurality of preset index sequences according to the feature parameter corresponding to the bit sequence to be encoded, and selects according to one or more of the following manners:
  • the multiple preset index sequences include index sequences of different lengths
  • the selecting module determines a maximum length LCB max of the coding block according to a feature parameter corresponding to the bit sequence to be encoded, from the multiple pre- Selecting an index sequence whose length is greater than or equal to LCB max , or selecting an index sequence whose length is not greater than a preset threshold by LCB max ;
  • the multiple preset index sequences include index sequences with different highest code rates
  • the selecting module determines the highest code rate Rmax of the coded block according to the feature parameters corresponding to the bit sequence to be encoded. Determining an index sequence having a highest code rate greater than or equal to Rmax among the plurality of preset index sequences;
  • the multiple preset index sequences include an index sequence with a different minimum code rate
  • the selection module determines a minimum code rate Rmin of the coded block according to a feature parameter corresponding to the bit sequence to be encoded.
  • An index sequence in which a minimum code rate is less than or equal to Rmin is selected among a plurality of preset index sequences;
  • the multiple preset index sequences include different index sequences of the supported CQI sets
  • the selecting module is configured from the plurality of preset index sequences according to the CQI level corresponding to the bit sequence to be encoded. Selecting an index sequence of the corresponding CQI level in the supported CQI set;
  • the multiple preset index sequences include different index sequences of the supported MCS sets, and the selecting module is configured from the multiple preset index sequences according to the MCS level corresponding to the bit sequence to be encoded. Selecting an index sequence of the corresponding MCS level in the supported MCS set;
  • the multiple preset index sequences include different index sequences of different coverage level sets, and the selecting module selects, according to the coverage level corresponding to the bit sequence to be encoded, the multiple preset index sequences.
  • the set of coverage levels supported by the selection includes an index sequence of the corresponding coverage level.
  • the maximum length LCB max of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be encoded:
  • the aggregation level of the control channel unit CCE is the aggregation level of the control channel unit CCE.
  • the highest code rate Rmax of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be encoded:
  • the selecting module When the selecting module performs the selection according to the mode 3, determining the lowest code rate Rmin of the coding block according to one or more of the following characteristic parameters corresponding to the bit sequence to be encoded:
  • the embodiment of the present application further provides a transmitting end, as shown in FIG. 3, including a memory 31 and a processor 32, wherein:
  • the memory 31 is configured to save a program code
  • the processor 32 is configured to read the program code to perform the following processing:
  • the processor in this embodiment can perform any processing in the method in this embodiment, and details are not described herein again.
  • This embodiment can be, but is not limited to, used in new radio access technology (NR).
  • the transmitting end of this embodiment may be a base station, and may be, but not limited to, a g-Node B (gB), or a user equipment (User Equipment, UE).
  • the receiving end in this embodiment may be a UE. It can also be a base station, which can be, but is not limited to, a gNB.
  • the plurality of preset index sequences have different lengths, which are 32 bits, 64 bits, 128 bits, and 256 bits respectively; and the plurality of preset index sequences have nesting characteristics, that is, any two lengths N 1 - N 2, and when N 2 ⁇ N 1, of length index sequence N 1 comprises a length of all elements in the index sequence N 2 in, or the length of the index sequence N 2 may be the length of N 1 is Extracted from the index sequence; for example, an index sequence of length 128 bits can be extracted from an index sequence of length 256 bits.
  • the feature parameter corresponding to the bit sequence to be encoded is an operation mode, which is assumed to be an in-band mode. That is, the transmitting end operates in the in-band mode when processing the bit sequence to be encoded.
  • the maximum coding block length supported in the in-band mode is 200 bits.
  • an index sequence with a length of not less than 200 bits is selected from the plurality of preset index sequences as the selected index sequence.
  • the length of the selection is 256 bits. The index sequence.
  • the transmitting end selects, from a preset 256 rows and 256 columns of coding matrices, a sub-matrix consisting of 100 rows or 100 columns corresponding to 100 elements in the selected index sequence (100 rows, 256 columns, or 256 rows and 100 columns).
  • the bit sequence to be transmitted is encoded, that is, a bit sequence to be encoded having a length of 200 bits is multiplied by the sub-matrix to obtain a coded code word sequence (ie, a coding block) having a length of 256 bits.
  • a code block consisting of the encoded codeword sequence is then transmitted to the receiving end.
  • the plurality of preset index sequences have different lengths, which are 32 bits, 64 bits, 128 bits, and 256 bits, respectively; and the plurality of preset index sequences have nesting characteristics between them.
  • the feature parameter corresponding to the bit sequence to be encoded is a working scenario, which is assumed to be a URLLC scenario. That is, when the transmitting end processes the bit sequence to be encoded, it works in the URLLC scenario. It is assumed that the maximum coding block length supported by the URLLC is 120 bits. In this case, the length selected from the plurality of preset index sequences and the maximum coding block length supported by the general coverage scenario is 120 bits, and the deviation is not greater than a preset value.
  • the transmitting end selects a sub-matrix consisting of 108 rows or 108 columns corresponding to 108 elements in the selected index sequence from a preset encoding matrix of 256 rows and 256 columns (the sub-matrix has 108 rows and 256 columns or 256 rows and 108 columns). And encoding the bit sequence to be transmitted, that is, a bit sequence of length 108 bits obtained by precoding is multiplied by the submatrix to obtain a coded codeword sequence having a length of 128 bits. A code block consisting of the encoded codeword sequence is then transmitted to the receiving end.
  • any two index sequences of different lengths of the plurality of preset index sequences have a nested relationship, and corresponding to the same preset coding matrix, that is, the plurality of preset indexes.
  • the elements in the sequence are the row index or column index of the encoding matrix.
  • the plurality of preset index sequences may also have no nesting characteristics.
  • the preset coding matrix corresponding to the multiple index sequences may be the same coding matrix, or may be different coding matrices.
  • an element in a 128-bit index sequence may be a row index or a column index in a 128-row 128-column encoding matrix and the encoding matrix is not a preset 256 rows 256 a sub-matrix of the column coding matrix
  • the transmitting end selects, from the preset 128 rows and 128 columns of coding matrices corresponding to the selected index sequence, 108 rows or 108 columns corresponding to 108 elements in the selected index sequence.
  • a matrix that encodes a pre-coded bit sequence may be a row index or a column index in a 128-row 128-column encoding matrix and the encoding matrix is not a preset 256 rows 256 a sub-matrix of the column coding matrix
  • This embodiment provides a data processing method.
  • the plurality of preset index sequences have different minimum code rates, which are 1/6, 1/3, and 1/2, respectively.
  • the code rate of the index sequence is equivalent to the code rate of the sub-matrix obtained by extracting the corresponding row or column from the corresponding preset coding matrix according to the elements in the index sequence.
  • CRC Cyclic Redundancy Check Code
  • the feature parameter corresponding to the bit sequence to be encoded is a link direction, which is assumed to be an uplink. That is, the coded block will be sent on the uplink. It is assumed that the lowest code rate supported by the uplink is 1/4. In this case, an index sequence with a lowest code rate of less than 1/4 needs to be selected from the plurality of preset index sequences. This embodiment selects an index sequence with a lowest code rate of 1/6 as the selected index sequence, and its length is greater than 48, assuming 64 bits.
  • the transmitting end selects 48 rows or 48 columns corresponding to 48 elements in the selected index sequence from a preset 256 rows and 256 columns of coding matrix to form a sub-matrix (48 rows, 256 columns or 256 rows and 48 columns), that is, precoding
  • the resulting 48-bit bit sequence is multiplied by the sub-matrix to obtain a coded codeword sequence.
  • a code block consisting of the encoded codeword sequence is then transmitted to the receiving end.
  • This embodiment provides a data processing method.
  • the feature parameter corresponding to the bit sequence to be encoded is a modulation coding mode level, which is assumed to be MCS15. That is, the modulation coding mode adopted by the bit sequence to be coded is MCS15.
  • MCS15 the modulation coding mode adopted by the bit sequence to be coded is MCS15.
  • an index sequence supporting the modulation and coding scheme MCS15 is selected from the plurality of preset index sequences. Therefore, the index sequence 2 supporting MCSset 2 is selected.
  • the plurality of preset index sequences have different lengths, which are 32 bits, 64 bits, 128 bits, and 256 bits, respectively.
  • the feature parameter corresponding to the bit sequence to be encoded is the maximum length of the coding block, which is assumed to be 236 bits.
  • an index sequence not less than the length 236 is selected from the plurality of preset index sequences as the selected index sequence. This embodiment selects an index sequence of 256 bits in length.
  • the plurality of preset index sequences have different minimum code rates, which are 1/6, 1/3, and 1/2, respectively.
  • the feature parameter corresponding to the bit sequence to be encoded is the lowest code rate of the coded block, which is assumed to be 1/3.
  • an index sequence with a code rate of not more than 1/3 is selected from the plurality of preset index sequences as the selected index sequence, and an index sequence with a lowest code rate of 1/3 or 1/6 may be selected.
  • the feature parameter corresponding to the bit sequence to be encoded is an aggregation level of the control channel unit CCE carrying the coding block, which is assumed to be 2; the plurality of preset index sequences have a plurality of different lengths. At this time, an index sequence whose length is not less than the maximum length supported by the current CCE aggregation level 2 is selected from the plurality of preset index sequences.
  • the bit sequence to be encoded is control information
  • the feature parameter corresponding to the bit sequence to be encoded is a control information format adopted by the bit sequence to be encoded, which is assumed to be DCI format 1;
  • the plurality of preset index sequences have a plurality of different lengths. At this time, an index sequence whose length is not less than the length of the DCI format1 (the length of the signaling using the DCI format1 format specified in the standard) is selected from the plurality of preset index sequences.
  • the feature parameter corresponding to the bit sequence to be encoded is a type of a channel carrying a coding block, which is assumed to be a physical broadcast channel; and the plurality of preset index sequences have a plurality of different code rates. At this time, an index sequence whose supported highest code rate is not less than the highest code rate of the physical broadcast channel is selected from the plurality of preset index sequences.
  • the feature parameter corresponding to the bit sequence to be encoded is a search space carrying a coding block, which is assumed to be a common search space; and the plurality of preset index sequences have a plurality of different code rates. At this time, an index sequence whose supported lowest code rate is not greater than the lowest code rate required by the common search space is selected from the plurality of preset index sequences.
  • the feature parameters corresponding to the bit sequence to be encoded may also be other parameters as listed in the first embodiment, and these parameters are not enumerated one by one.
  • serial numbers of the embodiments of the present application are merely for the description, and do not represent the advantages and disadvantages of the embodiments.
  • the foregoing embodiment method may be implemented by means of software plus a general hardware platform, and of course, may also be through hardware.
  • the technical solution of the embodiment of the present application may be embodied in the form of a software product stored in a storage medium (such as a read-only memory (ROM)/random access memory (random).
  • Access memory disk, and optical disk include a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods described in the various embodiments of the present application.
  • a terminal device which may be a mobile phone, a computer, a server, or a network device, etc.
  • the data processing method, device and transmitting end provided by the present disclosure can select a corresponding index sequence according to the feature parameter corresponding to the bit sequence to be encoded, and then encode according to the selected index sequence, thereby adapting to different application scenarios and improving coding. Performance.

Abstract

L'invention concerne un procédé de traitement de données, un dispositif et un terminal de transmission. Le procédé de traitement de données comprend les étapes suivantes : un terminal de transmission sélectionne, selon un paramètre de caractéristique correspondant à une séquence de bits à coder, et à partir d'une pluralité de séquences d'indices prédéfinies, une séquence d'indices ; et le terminal de transmission code, selon la séquence d'indices sélectionnée, la séquence de bits à coder, et transmet les blocs codés obtenus à un terminal de réception.
PCT/CN2018/076628 2017-02-15 2018-02-13 Procédé de traitement de données, dispositif et terminal de transmission WO2018149389A1 (fr)

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