CN108429602B - Data processing method and device and transmitting terminal - Google Patents
Data processing method and device and transmitting terminal Download PDFInfo
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- CN108429602B CN108429602B CN201710081769.4A CN201710081769A CN108429602B CN 108429602 B CN108429602 B CN 108429602B CN 201710081769 A CN201710081769 A CN 201710081769A CN 108429602 B CN108429602 B CN 108429602B
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- 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
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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
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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
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0064—Concatenated codes
- H04L1/0065—Serial concatenated codes
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Abstract
A data processing method, device and transmitting terminal, the transmitting terminal selects an index sequence from a plurality of preset index sequences according to the characteristic parameter corresponding to the bit sequence to be coded; and the transmitting end encodes the bit sequence to be encoded according to the selected index sequence and transmits an encoded block obtained by encoding to the receiving end. According to the method and the device, the corresponding index sequence is selected according to the characteristic parameters corresponding to the bit sequence to be coded, and coding is performed according to the selected index sequence, so that the method and the device can adapt to different application scenes, and the coding performance is improved.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to an encoding method, an encoding device, and a transmitting end.
Background
Due to the presence of channel noise, channel coding services are an independent part of mobile communication systems, which guarantee reliability, accuracy and effectiveness of information transfer. The most stringent requirement of 5G is to meet the vastly increased spectral efficiency and reliability.
In the encoding method using the generator matrix, the number of rows or columns of the generator matrix is often not equal to the length of the bit sequence to be encoded, and a suitable generator matrix is required and a corresponding number of rows or columns are selected from the generator matrix to encode the bit sequence to be encoded. For example, Polar code is a code using a generator matrix, and can satisfy the requirements for communication Throughput (Throughput) and Latency (Latency) in 5G New RAT. The code word after Polar code encoding can be represented as:
x＝u·GN
wherein u ═ u (u)1,…,uN) U is composed of information bits and frozen bits, GNIs to generate a matrix.
Representation pair matrix F2Performing Crohn's product operation n times, an
BNIs a bit reverse order permutation matrix. In polarization coding, information bits or frozen bits are generally placed on different polarization subchannels, and the polarization subchannels participating in coding need to be selected. For polar code encoding, subchannel selection is equivalent to generating a matrixThe corresponding row or column is selected.
In the related encoding method using the generator matrix, the selection of the generator matrix and the row or column in the generator matrix is fixed, and cannot adapt to the requirements of different application scenarios.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a data processing method, including:
the transmitting terminal selects an index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
and the transmitting end encodes the bit sequence to be encoded according to the selected index sequence and transmits an encoded block obtained by encoding to the receiving end.
An embodiment of the present invention further provides a data processing apparatus, including:
a storage module configured to: saving a plurality of preset index sequences;
a selection module configured to: selecting an index sequence from the preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
an encoding module configured to: coding the bit sequence to be coded according to the selected index sequence;
a sending module configured to: and sending the coding block obtained by the coding of the coding module to a receiving end.
The embodiment of the invention also provides a transmitting terminal, which comprises a memory and a processor, wherein:
a memory for storing program code;
a processor for reading the program code to perform the following:
selecting an index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
and coding the bit sequence to be coded according to the selected index sequence, and sending a coded block obtained by coding to a receiving end.
The scheme selects the corresponding index sequence according to the characteristic parameters corresponding to the bit sequence to be coded, and codes according to the selected index sequence, so that the method can adapt to different application scenes and improve the coding performance.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a flow chart of a data processing method according to an embodiment of the invention;
FIG. 2 is a block diagram of a data processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Example one
The present embodiment provides a data processing method, as shown in fig. 1, including:
step 110, the transmitting terminal selects an index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
the transmitting end of this embodiment may be a base station, but is not limited to a gtnb (g Node B ), or a UE (User Equipment), and the receiving end of this embodiment may be a UE, or a base station, or may be a gtnb.
And step 120, the transmitting end encodes the bit sequence to be encoded according to the selected index sequence, and transmits the encoded block obtained by encoding to the receiving end.
In this embodiment, the elements in the preset index sequences are indexes of rows or columns in a preset coding matrix, that is, one index sequence corresponds to a sub-matrix obtained by extracting corresponding rows or columns from the preset coding matrix, and the sub-matrix is a matrix used when a bit sequence is coded. For example, the index sequence is [2,4,7,8,1,3,5,7,9 … ], where each element represents a row index or a column index in the coding matrix. Selecting K elements in the row index corresponds to selecting K rows of the matrix. The indexes in the index sequence may be generated in advance according to different lengths, supported code rates, channel types, MCSs and other conditions.
The lengths of the plurality of preset index sequences are all powers of 2 (namely equal to 2)iI is a positive integer), where the length of the index sequence refers to the number of elements in the index sequence. The preset coding matrix can be stored in the transmitting terminal in advance, or can be calculated by a generating algorithm when in use.
In this embodiment, the plurality of preset index sequences have a nested relationship, that is:
the preset index sequences comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths meet the following conditions: the index sequence with the larger length comprises all elements in the index sequence with the smaller length; or
The preset index sequences comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: the index sequence of greater length includes all elements in the index sequence of smaller length.
The index sequences with nested relation can use the indexes of the rows or columns of the same coding matrix as elements, thereby saving the space required by the storage of the coding matrix.
In another embodiment, the plurality of preset index sequences may not have a nested relationship therebetween, that is:
the preset index sequences comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths meet the following conditions: at least a predetermined proportion of elements in the index sequence with the smaller length are different from the element indexes in the index sequence with the larger length; or
The preset index sequences comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: at least a predetermined proportion of the elements in the smaller length index sequence are different from the element indices in the larger length index sequence.
Wherein the predetermined ratio may be, for example, 5%, 10%, or 20%.
The index sequences having no nesting relationship allow the matrices corresponding to the index sequences to be optimized separately.
In this embodiment, the length of the bit sequence to be encoded is K bits, the length of the selected index sequence is N1, and the preset encoding matrix is an N × N matrix, where K is a positive integer, N1 and N are both powers of 2, and K is not less than N1 and not more than N.
In this embodiment, the encoding, by the transmitting end, the bit sequence to be encoded according to the selected index sequence includes:
the transmitting terminal selects K rows or K columns corresponding to K elements in the selected index sequence from the N multiplied by N matrix and encodes the bit sequence to be encoded; or
The transmitting end firstly pre-codes part or all of the bit sequence to be coded to obtain a check sequence with the length of P bits, and the bit sequence to be coded and the check sequence form a bit sequence with the length of K + P bits; and then selecting K + P rows or K + P columns corresponding to K + P elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence of the K + P bits, wherein K + P is less than or equal to N1.
In this embodiment, the coding method adopted by the precoding may be one or a combination of the following coding methods: parity check coding, cyclic redundancy check coding, BCH coding, hamming code coding, convolutional coding, generator matrix coding, Turbo coding, low density parity check coding, reed muller coding, Hash (Hash) coding, and the like.
In this embodiment, the N × N matrix passes through the pair matrix F2Performing i-times Crohn's product to obtain a matrix
N＝2iAnd i is a positive integer. The N × N matrix in this case is a generator matrix used for polarization encoding.
Taking polarization coding as an example, the bit sequence to be coded is an information bit. The polarized subchannels may be considered to be related to the row index of the coding matrix. The introduction of the index sequence is actually to rearrange the row (or column) indices of the coding matrix and then to select K rows corresponding to K elements in the selected index sequence, i.e. to select K polarization channels. The remaining unselected rows correspond to frozen bits of 0. And if the selected index sequence is selected, selecting K + P rows corresponding to K + P elements in the selected index sequence, wherein the P rows are P corresponding frozen bits which are not 0. When K rows or K columns are selected from the nxn matrix, or K + P rows or K + P columns are selected, consecutive rows or columns may be selected (or extracted), for example, the first K rows or the last K rows are extracted, the K bits are encoded into N bits, and then the LCB bits are obtained by deleting part of bits or repeating part of bits for the N bits.
In this embodiment, the characteristic parameters corresponding to the bit sequence to be coded include one or more of the following characteristic parameters:
the working mode refers to a working mode when the transmitting end processes a bit sequence to be coded, and specifically may include an in-band (in-band) mode, an out-band (out-band) mode, and an independent (stand alone) mode;
a working scenario refers to a working scenario when a transmitting end processes a bit sequence to be encoded, and specifically may include enhanced Mobile Broadband (eMBB), Ultra Reliable Low Latency (URLLC), massive Machine Communication (mtc), and the like;
the coverage level refers to a coverage level when the transmitting end processes a bit sequence to be coded, and specifically may include a general coverage level, an enhanced coverage level or an extreme coverage level;
the UE type refers to a type of a UE (User Equipment category, UE category) as a receiving end when a transmitting end is a network side device such as a base station, where the UE type may include T1 values, which are UE category 0 to UE category T1-1, respectively, and sizes of receiving caches of UE types with different parameter values are different;
the maximum length of the coding block;
the highest code rate of the coding block;
the lowest code rate of the coding block;
the scrambling mode refers to a type of Radio Network Temporary Identity (RNTI) used when scrambling a bit sequence to be coded, and may specifically include T5 different types of Radio Network Temporary Identities (RNTIs);
the transmission type refers to the transmission type of the coding block, such as first transmission or retransmission;
the Modulation Coding Scheme (MCS) level refers to an MCS level adopted when a bit sequence to be coded is modulated and coded, and the MCS level may include T2 values, which are MCS0 to MCS T2-1;
a control information format, which refers to a control information format adopted when the bit sequence to be coded is control information, and specifically may include T4 Downlink control information formats (DCI formats) and T5 uplink control channel formats (PUCCH formats);
the search space refers to a search space for carrying the coding block, and specifically may include a common search space or a dedicated search space;
a Channel State Information (CSI) process number, which refers to a CSI process number fed back by a receiving end, and may specifically include T6 different CSI process numbers;
a Channel Quality Indication (CQI) level, which refers to a CQI level of a Channel carrying a coding block, may specifically include T7 values, which are CQI0 to CQI T7-1;
the link direction refers to a direction of a link carrying the coding block, and may be a downlink direction from the base station or the relay to the terminal, or an uplink direction from the terminal to the base station or the relay;
the aggregation level of a Control Channel Element (CCE) refers to an aggregation level of a CCE carrying a coding block, and may have T3 values, which are CCE aggregation levels 0 to T3-1;
the Subframe type refers to a Subframe type carrying a coding block, and specifically may include an ABS (ABS) Subframe type or a None-ABS Subframe type;
the channel type refers to a channel type of a channel carrying the coding block, and may specifically include a data channel, a control channel, a broadcast channel, a paging channel, and the like;
the carrier frequency band refers to a carrier frequency band of a channel carrying the coding block, and specifically may include a frequency band of 6GHz or more, and a frequency band of less than 6 GHz.
The encoding block in this document refers to an encoding block obtained by encoding the bit sequence to be encoded, unless otherwise specified.
The above-mentioned feature parameters may be represented by names/identifications and values of the feature parameters.
In this embodiment, the preset index sequences have at least one of the following characteristics:
the method is characterized in that: index sequences with different lengths are included;
the second characteristic: index sequences with different supported highest code rates are included;
the characteristics are three: index sequences with different supported lowest code rates are included;
the characteristics are as follows: the method comprises index sequences with different supported modulation coding scheme MCS sets;
the characteristics are as follows: index sequences different in supported Channel Quality Indication (CQI) set are included;
the characteristics are as follows: including index sequences that differ in the set of supported coverage levels.
In this embodiment, when the transmitting end selects one index sequence from a plurality of preset index sequences according to the characteristic parameter corresponding to the bit sequence to be encoded, the transmitting end may select according to one or more of the following manners:
in a first mode, the preset index sequences include index sequences with different lengths, and the transmitting end transmits the bit sequence to be coded according to the characteristic parameters corresponding to the bit sequence to be codedDetermining a maximum length LCB of the coding blockmaxSelecting LCB with length greater than or equal to length from the plurality of preset index sequencesmaxOr select length and LCBmaxIndex sequences with a deviation of not more than a preset threshold; length less than LCBmaxThen, a part of bits in the encoded code block is repeated so that the length of the repetition is equal to the LCBmax. The preset threshold may be, for example, 5%, 10%, or 20%.
The method II comprises the steps that the preset index sequences comprise index sequences with different supported highest code rates, the transmitting end determines the highest code rate Rmax of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and the index sequence with the highest code rate larger than or equal to the Rmax is selected from the preset index sequences;
the method III is that the preset index sequences comprise index sequences with different supported lowest code rates, the transmitting end determines the lowest code rate Rmin of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and selects the index sequence with the lowest code rate less than or equal to the Rmin from the preset index sequences;
the mode four is that the preset index sequences comprise index sequences with different supported CQI sets, and the transmitting end selects the index sequence with the corresponding CQI grade from the supported CQI sets according to the CQI grade corresponding to the bit sequence to be coded; the CQI grade corresponding to the bit sequence to be coded can be directly obtained according to the CQI information fed back by the terminal, and can also be determined according to the CSI process number fed back by the terminal, and the requirement on the CQI can be determined according to the CSI process number.
The mode five, the multiple preset index sequences include index sequences with different supported MCS sets, and the transmitting end selects the index sequence with the corresponding MCS level from the multiple preset index sequences according to the MCS level corresponding to the bit sequence to be coded;
and the transmitting end selects a supported coverage level set from the plurality of preset index sequences according to the coverage level corresponding to the bit sequence to be coded, wherein the supported coverage level set comprises the index sequence of the corresponding coverage level.
When selecting in various manners, for example, the selection may be performed first according to a manner i.e. a requirement based on the maximum length of the coding block, and then according to a manner ii i.e. a requirement based on the highest code rate of the coding block. If the selection is not available, the selection strategy can be adjusted or the index sequence can be reset.
In this embodiment, when the transmitting end selects according to the first mode, the maximum length LCB of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be codedmax：
A working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
a scrambling mode;
a transmission type;
a control information format;
the aggregation level of the control channel elements CCE.
The transmitting end determines the maximum length LCB of the coding blockmaxIf 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 LCBmax. Otherwise, the LCB can be determined according to the maximum length of the coding block required by other parametersmax。
In this embodiment, when the transmitting end selects according to the second mode, 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 coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the highest code rate of the coding block;
when the transmitting terminal selects according to the third mode, 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 coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the lowest code rate of the code block.
When determining the highest code rate and/or the lowest code rate of the coding block, the transmitting end can directly take the selected highest code rate and/or the selected lowest code rate as Rmax and/or Rmin if the highest code rate and/or the lowest code rate of the coding block can be directly selected. Otherwise, the LCB can be determined according to the highest code rate and/or the lowest code rate of the coding block required by other parametersmax。
The present embodiment also provides a data processing apparatus, as shown in fig. 2, including:
a memory module 10 configured to: saving a plurality of preset index sequences;
a selection module 20 configured to: selecting an index sequence from the preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
an encoding module 30 configured to: coding the bit sequence to be coded according to the selected index sequence;
a sending module 40 configured to: and sending the coding block obtained by the coding of the coding module to a receiving end.
In the present embodiment, the first and second electrodes are, optionally,
the storage module also stores a preset coding matrix;
the elements in the preset index sequences are indexes of rows or columns in a preset coding matrix; the lengths of the preset index sequences are all powers of 2, wherein the length of the index sequence refers to the number of elements in the index sequence.
In the present embodiment, the first and second electrodes are, optionally,
the preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths satisfy the following conditions: the index sequence with the larger length comprises all elements in the index sequence with the smaller length; or
The preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: the index sequence with the larger length comprises all elements in the index sequence with the smaller length; or
The preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths satisfy the following conditions: at least a predetermined proportion of elements in the index sequence with the smaller length are different from the element indexes in the index sequence with the larger length; or
The preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: at least a predetermined proportion of the elements in the smaller length index sequence are different from the element indices in the larger length index sequence.
In the present embodiment, the first and second electrodes are, optionally,
the length of the bit sequence to be coded is K bits, the length of the selected index sequence is N1, the preset coding matrix is an N multiplied by N matrix, wherein K is a positive integer, N1 and N are powers of 2, and K is not less than N1 and not more than N.
In the present embodiment, the first and second electrodes are, optionally,
the encoding module encodes the bit sequence to be encoded according to the selected index sequence, and includes:
selecting K rows or K columns corresponding to K elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence to be coded; or
Pre-coding part or all of the bit sequence to be coded to obtain a check sequence with the length of P bits, and forming the bit sequence to be coded and the check sequence into a bit sequence with the length of K + P bits; and then selecting K + P rows or K + P columns corresponding to K + P elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence of the K + P bits, wherein K + P is less than or equal to N1.
In the present embodiment, the first and second electrodes are, optionally,
the selection module selects an index sequence from the preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded, wherein the characteristic parameters corresponding to the bit sequence to be coded comprise one or more of the following characteristic parameters:
a working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
the highest code rate of the coding block;
the lowest code rate of the coding block;
a scrambling mode;
a transmission type;
modulating the MCS level of the coding mode;
a control information format;
searching a space;
channel State Information (CSI) process number;
channel Quality Indication (CQI) level;
a link direction;
an aggregation level of control channel elements, CCEs;
a subframe type;
a channel type;
a carrier band.
In the present embodiment, the first and second electrodes are, optionally,
the selection module selects one index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded according to one or more of the following modes:
in a first mode, the plurality of preset index sequences include index sequences with different lengths, and the selection module determines the maximum length LCB of the coding block according to the characteristic parameters corresponding to the bit sequence to be codedmaxSelecting LCB with length greater than or equal to length from the plurality of preset index sequencesmaxOr select length and LCBmaxIndex sequences with a deviation of not more than a preset threshold;
the second mode is that the multiple preset index sequences comprise index sequences with different supported highest code rates, the selection module determines the highest code rate Rmax of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and selects the index sequence with the highest code rate larger than or equal to the Rmax from the multiple preset index sequences;
the mode III is that the plurality of preset index sequences comprise index sequences with different supported lowest code rates, the selection module determines the lowest code rate Rmin of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and selects the index sequence with the lowest code rate less than or equal to the Rmin from the plurality of preset index sequences;
the mode four, the multiple preset index sequences include index sequences with different supported CQI sets, and the selection module selects, according to the CQI level corresponding to the bit sequence to be encoded, an index sequence with a supported CQI set including the corresponding CQI level from the multiple preset index sequences;
the mode five, the multiple preset index sequences include index sequences with different supported MCS sets, and the selection module selects, according to the MCS level corresponding to the bit sequence to be encoded, an index sequence with the corresponding MCS level from the supported MCS set from the multiple preset index sequences;
the mode six includes that the plurality of preset index sequences include index sequences with different supported coverage level sets, and the selection module selects a supported coverage level set from the plurality of preset index sequences according to the coverage level corresponding to the bit sequence to be encoded, where the supported coverage level set includes the index sequence of the corresponding coverage level.
In the present embodiment, the first and second electrodes are, optionally,
when the selection module selects according to the first mode, the maximum length LCB of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be codedmax：
A working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
a scrambling mode;
a transmission type;
a control information format;
the aggregation level of the control channel elements CCE.
In the present embodiment, the first and second electrodes are, optionally,
when the selection module selects according to the second mode, determining the highest code rate Rmax of the coding block according to one or more of the following characteristic parameters corresponding to the bit sequence to be coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the highest code rate of the coding block;
in the present embodiment, the first and second electrodes are, optionally,
when the selection module selects according to the third mode, 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 coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the lowest code rate of the code block.
The present embodiment further provides a transmitting end, including a memory and a processor, wherein:
the memory is used for storing program codes;
the processor is configured to read the program code to perform the following processes:
selecting an index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
and coding the bit sequence to be coded according to the selected index sequence, and sending a coded block obtained by coding to a receiving end.
The processor of this embodiment may execute any processing in the method of this embodiment, which is not described herein again.
Example two
The present embodiment may be used in, but is not limited to, NR (new radio access technology). The transmitting end of this embodiment may be a base station, but is not limited to a gtnb (g Node B ), or a UE (User Equipment), and the receiving end of this embodiment may be a UE, or a base station, or may be a gtnb.
In this embodiment, the transmitting end selects an index sequence from a plurality of preset index sequences according to a characteristic parameter corresponding to a bit sequence to be encoded; the length of the bit sequence to be coded is K-100 bits; the preset index sequences have different lengths, namely 32 bits, 64 bits, 128 bits and 256 bits; the plurality of preset index sequences have a nesting characteristic, namely, the random two lengths are N1And N2And N is2<N1When the length is N1Comprises a length N2All elements of the index sequence of (1), or length N2May be selected from a length of N1Extracting the index sequence to obtain; for example, an index sequence of 128 bits in length may be extracted from an index sequence of 256 bits in length.
In this embodiment, the characteristic parameter corresponding to the bit sequence to be coded is an operation mode, and an in-band (in-band) mode is assumed. I.e. the transmitting end operates in an in-band mode when it processes the bit sequence to be encoded. The maximum coding block supported in the in-band mode has a length of 200 bits, and at this time, an index sequence having a length not less than 200 bits is selected from the plurality of preset index sequences as a selected index sequence, and in this embodiment, an index sequence having a length of 256 bits is selected.
The transmitting terminal selects a sub-matrix (100 rows and 256 columns or 256 rows and 100 columns) composed of 100 rows or 100 columns corresponding to 100 elements in the selected index sequence from a preset 256 rows and 256 columns of coding matrices to code the bit sequence to be transmitted, that is, the bit sequence to be coded with the length of 200 bits is multiplied by the sub-matrix to obtain a coded codeword sequence (i.e., a coding block) with the length of 256 bits. And then sending the code block consisting of the coded code word sequence to a receiving end.
EXAMPLE III
In this embodiment, the transmitting end selects an index sequence from a plurality of preset index sequences according to a characteristic parameter corresponding to a bit sequence to be encoded; the length of the bit sequence to be coded is K-96 bits; the preset index sequences have different lengths, namely 32 bits, 64 bits, 128 bits and 256 bits; the plurality of preset index sequences have nesting characteristics.
In this embodiment, the transmitting end performs precoding on part or all of the bit sequences to be coded to obtain a check sequence with a length P of 12 bits; the precoding is parity coding in this embodiment. The bit sequence to be coded and the check sequence jointly form a bit sequence with the length of K + P-96 + 12-108 bits;
in this embodiment, the characteristic parameter corresponding to the bit sequence to be coded is a working scenario, and is assumed to be a URLLC scenario. Namely, the transmitting end works in the URLLC scene when processing the bit sequence to be encoded. Assuming support under URLLCIs 120 bits, an index sequence with a length deviation from the maximum coding block length supported in the general coverage scenario of 120 bits, which is not more than a preset threshold r%, is selected from the plurality of preset index sequences, namely abs (Ni-LCB)max) R% of/Ni, LCB in this examplemax120, r% ═ 10%, in this embodiment, an index sequence of length 128 bits is selected;
and the transmitting terminal selects a sub-matrix (the sub-matrix has 108 rows and 256 columns or 256 rows and 108 columns) consisting of 108 rows or 108 columns corresponding to 108 elements in the selected index sequence from a preset 256 rows and 256 columns of coding matrices to code the bit sequence to be transmitted, namely, the bit sequence with the length of 108 bits obtained after precoding is multiplied by the sub-matrix to obtain a coded codeword sequence with the length of 128 bits. And then sending the code block consisting of the coded code word sequence to a receiving end.
In other embodiments, if any two index sequences with different lengths in the plurality of preset index sequences have a nested relationship, the two index sequences correspond to the same preset coding matrix, that is, elements in the plurality of preset index sequences are row indexes or column indexes of the coding matrix. The plurality of preset index sequences may also have no nesting property. In this case, the predetermined coding matrices corresponding to the plurality of index sequences may be the same coding matrix or different coding matrices. For example, the elements in the index sequence with a length of 128 bits may be row indexes or column indexes in a 128-row 128-column coding matrix, and the coding matrix is not a predetermined sub-matrix of 256-row 256-column coding matrix, and the transmitting end selects 108 rows or 108 columns corresponding to 108 elements in the selected index sequence from the predetermined 128-row 128-column coding matrix corresponding to the selected index sequence to form the sub-matrix, and encodes the bit sequence obtained after precoding.
Example four
The embodiment provides a data processing method.
In this embodiment, the transmitting end selects an index sequence from a plurality of preset index sequences according to a characteristic parameter corresponding to a bit sequence to be encoded; the length of the bit sequence to be coded is K-40 bits; the preset index sequences have different lowest code rates, which are 1/6,1/3 and 1/2 respectively. In this application, the code rate of the index sequence is equivalent to the code rate of a sub-matrix obtained by extracting corresponding rows or columns from a corresponding preset coding matrix according to elements in the index sequence.
In this embodiment, the transmitting end performs precoding on part or all of the bit sequences to be coded to obtain a check sequence with a length P of 8 bits; the precoding is in this embodiment a Cyclic Redundancy Check (CRC) code. The bit sequence to be coded and the check sequence jointly form a bit sequence with the length of K + P-40 + 8-48 bits;
in this embodiment, the characteristic parameter corresponding to the bit sequence to be encoded is the link direction, which is assumed to be uplink. I.e. the coded block will be transmitted on the uplink. Assuming that the lowest code rate supported by the uplink is 1/4, an index sequence with the lowest code rate less than 1/4 needs to be selected from the plurality of preset index sequences. The present embodiment selects an index sequence with the lowest code rate of 1/6 as the selected index sequence, and the length of the selected index sequence is greater than 48, which is assumed to be 64 bits.
And the transmitting end selects 48 rows or 48 columns corresponding to 48 elements in the selected index sequence from a preset 256-row 256-column coding matrix to form a sub-matrix (48 rows or 256 rows and 48 columns), namely, a bit sequence with the length of 48 bits obtained after precoding is multiplied by the sub-matrix to obtain a coded codeword sequence. And then sending the code block consisting of the coded code word sequence to a receiving end.
EXAMPLE five
The embodiment provides a data processing method.
In this embodiment, the transmitting end selects an index sequence from a plurality of preset index sequences according to a characteristic parameter corresponding to a bit sequence to be encoded; the length of the bit sequence to be coded is K-230 bits; the plurality of preset index sequence branchesDifferent MCS sets are supported, and the MCS set supported by the index sequence is assumed to be MCSset1The MCS set supported by index sequence two is MCSset { MCS0, MCS1, … MCS10}, and the MCS set supported by index sequence two is MCSset2The index sequence three supports MCS set MCSset, { MCS11, MCS12, and … MCS20}, and the index sequence three supports MCS set MCSset3＝{MCS21,MCS22,…MCS30}。
In this embodiment, the transmitting end performs precoding on part or all of the bit sequences to be coded to obtain a check sequence with a length P of 16 bits; in this embodiment the precoding is BCH coding. The bit sequence to be coded and the check sequence jointly form a bit sequence with the length of K + P230 +16 246 bits;
in this embodiment, the characteristic parameter corresponding to the bit sequence to be coded is a modulation and coding scheme level, which is assumed to be MCS 15. I.e. the modulation coding scheme used by the bit sequence to be coded is MCS 15. At this time, an index sequence supporting the modulation and coding scheme MCS15 is selected from the plurality of preset index sequences. Therefore, the MCSset is selectively supported2Index sequence two.
The encoding process at the transmitting end is not described in detail here.
The following embodiments mainly describe differences from the previous embodiments when selecting an index sequence according to a characteristic parameter corresponding to a bit sequence to be encoded.
EXAMPLE six
In this embodiment, the predetermined index sequences have different lengths, which are 32 bits, 64 bits, 128 bits and 256 bits respectively. The characteristic parameter corresponding to the bit sequence to be coded is the maximum length of the coding block, which is assumed to be 236 bits. At this time, an index sequence not less than the length 236 is selected from the plurality of preset index sequences as a selected index sequence. The present embodiment selects an index sequence having a length of 256 bits.
EXAMPLE seven
In this embodiment, the predetermined index sequences have different lowest code rates, which are 1/6,1/3, and 1/2. The characteristic parameter corresponding to the bit sequence to be coded is the lowest code rate of the coded code block, which is assumed to be 1/3. At this time, an index sequence with a code rate not greater than 1/3 is selected from the plurality of preset index sequences as a selected index sequence, and an index sequence with the lowest code rate of 1/3 or 1/6 can be selected.
Example eight
In this embodiment, the characteristic parameter corresponding to the bit sequence to be coded is an aggregation level of a control channel element CCE carrying a 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 with a length not less than the maximum length supported by the current CCE aggregation level 2 is selected from the plurality of preset index sequences.
Example nine
In this embodiment, the bit sequence to be encoded is control information, and the characteristic parameter corresponding to the bit sequence to be encoded is a control information format adopted by the bit sequence to be encoded, and 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 having a length not less than the length of the DCI format1 (the length of signaling using the DCI format1 specified in the standard) is selected from the plurality of preset index sequences,
example ten
In this embodiment, the characteristic parameter corresponding to the bit sequence to be coded is a channel type of a channel carrying the coding block, and is assumed to be a physical broadcast channel; the preset index sequences have different code rates. And selecting an index sequence which supports the highest code rate not less than the highest code rate of the physical broadcast channel from the plurality of preset index sequences.
EXAMPLE eleven
In this embodiment, the characteristic parameter corresponding to the bit sequence to be coded is a search space for carrying a coding block, and is assumed to be a common search space; the preset index sequences have different code rates. And selecting an index sequence which supports the lowest code rate not more than the lowest code rate required by the public search space from the plurality of preset index sequences.
The characteristic parameters corresponding to the bit sequence to be coded may also be other parameters such as those listed in the first embodiment, and these parameters are not enumerated one by one.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (27)
1. A method of data processing, comprising:
the transmitting terminal selects an index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
the transmitting terminal encodes the bit sequence to be encoded according to the selected index sequence and transmits an encoded block obtained by encoding to a receiving terminal;
the elements in the preset index sequences are indexes of rows or columns in a preset coding matrix; the lengths of the preset index sequences are all powers of 2, wherein the length of the index sequence refers to the number of elements in the index sequence.
2. The method of claim 1, wherein:
the preset index sequences comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths meet the following conditions: the index sequence with the larger length comprises all elements in the index sequence with the smaller length; or
The preset index sequences comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: the index sequence of greater length includes all elements in the index sequence of smaller length.
3. The method of claim 1, wherein:
the preset index sequences comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths meet the following conditions: at least a predetermined proportion of elements in the index sequence with the smaller length are different from the element indexes in the index sequence with the larger length; or
The preset index sequences comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: at least a predetermined proportion of the elements in the smaller length index sequence are different from the element indices in the larger length index sequence.
4. The method of claim 3, wherein:
the predetermined ratio is 5%, 10%, or 20%.
5. The method of claim 1, wherein:
the length of the bit sequence to be coded is K bits, the length of the selected index sequence is N1, the preset coding matrix is an N multiplied by N matrix, wherein K is a positive integer, N1 and N are powers of 2, and K is not less than N1 and not more than N.
6. The method of claim 5, wherein:
the transmitting end encodes the bit sequence to be encoded according to the selected index sequence, and the method comprises the following steps:
the transmitting terminal selects K rows or K columns corresponding to K elements in the selected index sequence from the N multiplied by N matrix and encodes the bit sequence to be encoded; or
The transmitting end firstly pre-codes part or all of the bit sequence to be coded to obtain a check sequence with the length of P bits, and the bit sequence to be coded and the check sequence form a bit sequence with the length of K + P bits; and then selecting K + P rows or K + P columns corresponding to K + P elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence of the K + P bits, wherein K + P is less than or equal to N1.
7. The method of claim 5, wherein:
the NxN matrix passes through a pair matrix F2Performing i-times Crohn's product to obtain a matrix
N＝2iAnd i is a positive integer.
8. The method of claim 1, wherein:
the characteristic parameters corresponding to the bit sequence to be coded comprise one or more of the following characteristic parameters:
a working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
the highest code rate of the coding block;
the lowest code rate of the coding block;
a scrambling mode;
a transmission type;
modulating the MCS level of the coding mode;
a control information format;
searching a space;
channel State Information (CSI) process number;
channel Quality Indication (CQI) level;
a link direction;
an aggregation level of control channel elements, CCEs;
a subframe type;
a channel type;
a carrier band.
9. The method of any of claims 1-8, wherein:
the plurality of preset index sequences have at least one of the following characteristics:
the method is characterized in that: index sequences with different lengths are included;
the second characteristic: index sequences with different supported highest code rates are included;
the characteristics are three: index sequences with different supported lowest code rates are included;
the characteristics are as follows: the method comprises index sequences with different supported modulation coding scheme MCS sets;
the characteristics are as follows: index sequences different in supported Channel Quality Indication (CQI) set are included;
the characteristics are as follows: including index sequences that differ in the set of supported coverage levels.
10. The method of any of claims 1-8, wherein:
when the transmitting terminal selects one index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded, the transmitting terminal selects the index sequence according to one or more of the following modes:
in a first mode, the preset index sequences include index sequences with different lengths, and the transmitting end determines the maximum length LCB of the coding block according to the characteristic parameters corresponding to the bit sequence to be codedmaxSelecting LCB with length greater than or equal to length from the plurality of preset index sequencesmaxOr select length and LCBmaxIndex sequences with a deviation of not more than a preset threshold;
the method II comprises the steps that the preset index sequences comprise index sequences with different supported highest code rates, the transmitting end determines the highest code rate Rmax of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and the index sequence with the highest code rate larger than or equal to the Rmax is selected from the preset index sequences;
the method III is that the preset index sequences comprise index sequences with different supported lowest code rates, the transmitting end determines the lowest code rate Rmin of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and selects the index sequence with the lowest code rate less than or equal to the Rmin from the preset index sequences;
the mode four is that the preset index sequences comprise index sequences with different supported CQI sets, and the transmitting end selects the index sequence with the corresponding CQI grade from the supported CQI sets according to the CQI grade corresponding to the bit sequence to be coded;
the mode five, the multiple preset index sequences include index sequences with different supported MCS sets, and the transmitting end selects the index sequence with the corresponding MCS level from the multiple preset index sequences according to the MCS level corresponding to the bit sequence to be coded;
and the transmitting end selects a supported coverage level set from the plurality of preset index sequences according to the coverage level corresponding to the bit sequence to be coded, wherein the supported coverage level set comprises the index sequence of the corresponding coverage level.
11. The method of claim 10, wherein:
when the transmitting terminal selects according to the first mode, the maximum length LCB of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be codedmax：
A working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
a scrambling mode;
a transmission type;
a control information format;
the aggregation level of the control channel elements CCE.
12. The method of claim 10, wherein:
when the transmitting terminal selects according to the second mode, determining the highest code rate Rmax of the coding block according to one or more of the following characteristic parameters corresponding to the bit sequence to be coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the highest code rate of the coding block;
when the transmitting terminal selects according to the third mode, 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 coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the lowest code rate of the code block.
13. The method of claim 10, wherein:
the preset threshold in the first mode is 5%, 10% or 20%.
14. A data processing apparatus, comprising:
a storage module configured to: saving a plurality of preset index sequences;
a selection module configured to: selecting an index sequence from the preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
an encoding module configured to: coding the bit sequence to be coded according to the selected index sequence;
a sending module configured to: sending the coding block obtained by the coding of the coding module to a receiving end;
the storage module also stores a preset coding matrix;
the elements in the preset index sequences are indexes of rows or columns in a preset coding matrix; the lengths of the preset index sequences are all powers of 2, wherein the length of the index sequence refers to the number of elements in the index sequence.
15. The apparatus of claim 14, wherein:
the preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths satisfy the following conditions: the index sequence with the larger length comprises all elements in the index sequence with the smaller length; or
The preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: the index sequence with the larger length comprises all elements in the index sequence with the smaller length; or
The preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and the at least two index sequences with different lengths satisfy the following conditions: at least a predetermined proportion of elements in the index sequence with the smaller length are different from the element indexes in the index sequence with the larger length; or
The preset index sequences stored by the storage module comprise at least two index sequences with different lengths, and any two of the index sequences with different lengths meet the following conditions: at least a predetermined proportion of the elements in the smaller length index sequence are different from the element indices in the larger length index sequence.
16. The apparatus of claim 14, wherein:
the length of the bit sequence to be coded is K bits, the length of the selected index sequence is N1, the preset coding matrix is an N multiplied by N matrix, wherein K is a positive integer, N1 and N are powers of 2, and K is not less than N1 and not more than N.
17. The apparatus of claim 16, wherein:
the encoding module encodes the bit sequence to be encoded according to the selected index sequence, and includes:
selecting K rows or K columns corresponding to K elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence to be coded; or
Pre-coding part or all of the bit sequence to be coded to obtain a check sequence with the length of P bits, and forming the bit sequence to be coded and the check sequence into a bit sequence with the length of K + P bits; and then selecting K + P rows or K + P columns corresponding to K + P elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence of the K + P bits, wherein K + P is less than or equal to N1.
18. The apparatus of claim 14, wherein:
the selection module selects an index sequence from the preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded, wherein the characteristic parameters corresponding to the bit sequence to be coded comprise one or more of the following characteristic parameters:
a working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
the highest code rate of the coding block;
the lowest code rate of the coding block;
a scrambling mode;
a transmission type;
modulating the MCS level of the coding mode;
a control information format;
searching a space;
channel State Information (CSI) process number;
channel Quality Indication (CQI) level;
a link direction;
an aggregation level of control channel elements, CCEs;
a subframe type;
a channel type;
a carrier band.
19. The apparatus of any of claims 14-18, wherein:
the selection module selects one index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded according to one or more of the following modes:
in a first mode, the plurality of preset index sequences include index sequences with different lengths, and the selection module determines the maximum length LCB of the coding block according to the characteristic parameters corresponding to the bit sequence to be codedmaxSelecting LCB with length greater than or equal to length from the plurality of preset index sequencesmaxOr select length and LCBmaxIndex sequences with a deviation of not more than a preset threshold;
the second mode is that the multiple preset index sequences comprise index sequences with different supported highest code rates, the selection module determines the highest code rate Rmax of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and selects the index sequence with the highest code rate larger than or equal to the Rmax from the multiple preset index sequences;
the mode III is that the plurality of preset index sequences comprise index sequences with different supported lowest code rates, the selection module determines the lowest code rate Rmin of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and selects the index sequence with the lowest code rate less than or equal to the Rmin from the plurality of preset index sequences;
the mode four, the multiple preset index sequences include index sequences with different supported CQI sets, and the selection module selects, according to the CQI level corresponding to the bit sequence to be encoded, an index sequence with a supported CQI set including the corresponding CQI level from the multiple preset index sequences;
the mode five, the multiple preset index sequences include index sequences with different supported MCS sets, and the selection module selects, according to the MCS level corresponding to the bit sequence to be encoded, an index sequence with the corresponding MCS level from the supported MCS set from the multiple preset index sequences;
the mode six includes that the plurality of preset index sequences include index sequences with different supported coverage level sets, and the selection module selects a supported coverage level set from the plurality of preset index sequences according to the coverage level corresponding to the bit sequence to be encoded, where the supported coverage level set includes the index sequence of the corresponding coverage level.
20. The apparatus of claim 19, wherein:
when the selection module selects according to the first mode, the maximum length LCB of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be codedmax：
A working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
a scrambling mode;
a transmission type;
a control information format;
the aggregation level of the control channel elements CCE.
21. The apparatus of claim 19, wherein:
when the selection module selects according to the second mode, determining the highest code rate Rmax of the coding block according to one or more of the following characteristic parameters corresponding to the bit sequence to be coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the highest code rate of the coding block;
when the selection module selects according to the third mode, 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 coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the lowest code rate of the code block.
22. A transmitting end comprising a memory and a processor, characterized in that:
the memory is used for storing program codes;
the processor is configured to read the program code to perform the following processes:
selecting an index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded;
coding the bit sequence to be coded according to the selected index sequence, and sending a coded block obtained by coding to a receiving end;
the elements in the preset index sequences are indexes of rows or columns in a preset coding matrix; the lengths of the preset index sequences are all powers of 2, wherein the length of the index sequence refers to the number of elements in the index sequence.
23. The transmitting end of claim 22, wherein:
the plurality of preset index sequences satisfy one of the following conditions:
the index sequences with at least two different lengths are included, and the at least two index sequences with different lengths satisfy that: the index sequence with the larger length comprises all elements in the index sequence with the smaller length;
the method comprises at least two index sequences with different lengths, wherein any two index sequences with different lengths satisfy the following conditions: the index sequence with the larger length comprises all elements in the index sequence with the smaller length;
the index sequences with at least two different lengths are included, and the at least two index sequences with different lengths satisfy that: at least a predetermined proportion of elements in the index sequence with the smaller length are different from the element indexes in the index sequence with the larger length;
the method comprises at least two index sequences with different lengths, wherein any two index sequences with different lengths satisfy the following conditions: at least a predetermined proportion of the elements in the smaller length index sequence are different from the element indices in the larger length index sequence.
24. The transmitting end of claim 22, wherein:
the length of the bit sequence to be coded is K bits, the length of the selected index sequence is N1, the preset coding matrix is an N multiplied by N matrix, wherein K is a positive integer, N1 and N are powers of 2, and K is not less than N1 and not more than N;
the processor encodes the bit sequence to be encoded according to the selected index sequence, and includes:
selecting K rows or K columns corresponding to K elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence to be coded; or
Pre-coding part or all of the bit sequence to be coded to obtain a check sequence with the length of P bits, and forming the bit sequence to be coded and the check sequence into a bit sequence with the length of K + P bits; and then selecting K + P rows or K + P columns corresponding to K + P elements in the selected index sequence from the N multiplied by N matrix, and coding the bit sequence of the K + P bits, wherein K + P is less than or equal to N1.
25. The transmitting end of claim 22, wherein:
the characteristic parameters corresponding to the bit sequence to be coded comprise one or more of the following characteristic parameters:
a working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
the highest code rate of the coding block;
the lowest code rate of the coding block;
a scrambling mode;
a transmission type;
modulating the MCS level of the coding mode;
a control information format;
searching a space;
channel State Information (CSI) process number;
channel Quality Indication (CQI) level;
a link direction;
an aggregation level of control channel elements, CCEs;
a subframe type;
a channel type;
a carrier band.
26. The transmitting end according to any of claims 22-25, wherein:
when the processor selects one index sequence from a plurality of preset index sequences according to the characteristic parameters corresponding to the bit sequence to be coded, the processor selects the index sequence according to one or more of the following modes:
in a first mode, the plurality of preset index sequences include index sequences with different lengths, and the maximum length LCB of the coding block is determined according to the characteristic parameters corresponding to the bit sequence to be codedmaxSelecting LCB with length greater than or equal to length from the plurality of preset index sequencesmaxOr select length and LCBmaxIndex sequences with a deviation of not more than a preset threshold;
the second mode is that the preset index sequences comprise index sequences with different supported highest code rates, the highest code rate Rmax of the coding block is determined according to the characteristic parameters corresponding to the bit sequence to be coded, and the index sequence with the highest code rate larger than or equal to the Rmax is selected from the preset index sequences;
determining the lowest code rate Rmin of the coding block according to the characteristic parameters corresponding to the bit sequence to be coded, and selecting the index sequence with the lowest code rate less than or equal to the Rmin from the preset index sequences;
a fourth mode, the multiple preset index sequences include index sequences with different supported CQI sets, and according to the CQI level corresponding to the bit sequence to be encoded, an index sequence with the corresponding CQI level in a supported CQI set is selected from the multiple preset index sequences;
a fifth mode, where the multiple preset index sequences include index sequences with different supported MCS sets, and an index sequence including the corresponding MCS level in a supported MCS set is selected from the multiple preset index sequences according to the MCS level corresponding to the bit sequence to be encoded;
the mode six includes that the multiple preset index sequences include index sequences with different supported coverage level sets, and according to the coverage level corresponding to the bit sequence to be encoded, a supported coverage level set is selected from the multiple preset index sequences to include the index sequence of the corresponding coverage level.
27. The transmitting end of claim 26, wherein:
when the processor selects according to the first mode, the maximum length LCB of the coding block is determined according to one or more of the following characteristic parameters corresponding to the bit sequence to be codedmax：
A working mode;
a working scene;
a coverage level;
a user equipment type;
the maximum length of the coding block;
a scrambling mode;
a transmission type;
a control information format;
an aggregation level of control channel elements, CCEs;
when the processor selects according to the second mode, determining the highest code rate Rmax of the coding block according to one or more of the following characteristic parameters corresponding to the bit sequence to be coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the highest code rate of the coding block;
when the selection is performed according to the third mode, 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 coded:
a link direction;
a transmission type;
a channel type;
searching a space;
a subframe type;
the lowest code rate of the code block.
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