CN107733557A - A kind of method and device of data transmission, communication equipment - Google Patents
A kind of method and device of data transmission, communication equipment Download PDFInfo
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- CN107733557A CN107733557A CN201610666555.9A CN201610666555A CN107733557A CN 107733557 A CN107733557 A CN 107733557A CN 201610666555 A CN201610666555 A CN 201610666555A CN 107733557 A CN107733557 A CN 107733557A
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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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
-
- 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
- H04L1/0057—Block codes
Abstract
A kind of method that data are sent, including：The CRC that the first length is added to the first bit stream waiting for transmission obtains the second bit stream；According to the length of the second bit stream and maximum code block length set in advance, the second class bit flow point is segmented into N1Individual 3rd bit stream Pi, and add the CRC of the second length respectively to the 3rd bit stream, obtain N1Individual 4th bit stream Ci；To the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual 5th bit stream Di；To the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；To N1Individual 6th bit stream carries out digital baseband modulation, obtains N1 the first stream of modulation symbols Si；By first kind stream of modulation symbols SiIt is mapped in physical channel resources.Device and communication equipment that a kind of data are sent also are provided.This programme can realize the rate-matched of flexible low density parity check code.
Description
Technical field
The application relates to, but are not limited to communication technical field, espespecially a kind of method and device of data transmission, communication equipment.
Background technology
The transmitting terminal of digital communication system generally includes the parts such as information source, channel encoder and modulator, and receiving terminal is usual
Including demodulator, channel decoder and the stay of two nights, as shown in Figure 1.Channel encoder is used for information bit according to certain rule
Redundancy is introduced so that receiving terminal channel decoder can correct what information occurred in channel to a certain extent
Error code.
LDPC (Low Density Parity Check Code, low density parity check code) is that one kind is based on sparse school
The linear block codes of matrix is tested, exactly using the openness of its check matrix, the coding and decoding of low complex degree could be realized, so as to
So that LDPC moves towards practical.
The graphical representation of LDPC parity matrixs is bipartite graph.Have between bipartite graph and check matrix one a pair
The relation answered, M*N parity check matrix H define the pact that each code word with N-bit meets M even-odd check collection
Beam.One bipartite graph includes N number of variable node and M parity check node.When m-th of verification is related to n-th of bit, i.e.,
The element H that m rows n-th arrange in HM, nWhen=1, there will be a line connection check-node m and variable node n.In bipartite graph, appoint
All without there is a connection between what of a sort node, and in total the side number and check matrix in bipartite graph nonzero element number
It is equal.
A kind of special LDPC is increasingly becoming mainstream applications due to the feature with quasi- circulation (or " structuring ").If this
Kind LDPC parity check matrix H is (M × z) × (N × z) matrixes, and it is made up of M × N number of matrix in block form, each piecemeal square
Battle array is all the different powers of z × z basic permutation matrix, and when basic permutation matrix is unit battle array, they are all following for unit matrix
Ring shift matrix (is defaulted as moving to right) in text.With following form：
IfHave
If0 integer is greater than or equal to, is definedP is z × z standard replacement herein
Matrix, it is as follows：
Pass through such powerEach matrix in block form of can unique mark, the power of unit matrix can represent with 0,
Matrix is typically represented with -1.So, if H each matrix in block form replaced with its power, a M × N is just obtained
Power matrix Hb.Here, H is definedbIt is H basis matrix, H is referred to as HbExtended matrix.In actual coding, z=code lengths/
The columns N of basis matrix, referred to as spreading factor.
For example, matrix
Following parameter z and the basis matrix H of one 2 × 4 can be usedbExtension obtains：
Z=3 and
Accordingly it is also possible to the encoder for saying this kind of LDPC code is by basis matrix Hb, spreading factor z and selected basic
Permutation matrix is uniquely generated.
The mode of the decoding generally use iterative decoding of LDPC code is carried out.In order to reduce the wait between adjacent iteration twice
Time, the handling capacity of decoder is improved, there has been proposed a kind of structure of double frame codings.But code block (the bit of prior art
Stream) partitioning algorithm can not support double frame codings well.
In circulating buffer memory rate matches (Circular Buffer Rate Matching) algorithm, according to desired defeated
Go out code check, L coded-bit can be selected, the output as circulating buffer memory rate matching；Circulating buffer memory rate is matched from output
The starting position that some in buffer is specified reads L coded-bit, is referred to as bit selection.Generally speaking, it is selected for
The bit of transmission can start reading out from any position in buffer to be come., can be around slow if reaching the end of buffer
Continue to read data in the starting position of storage.So the rate-matched based on circular buffer can be realized by simple method
(delete or repeat).Operated for hybrid automatic repeat-request (HARQ), circular buffer is again excellent with flexibility and granularity
Gesture.
Hybrid automatic repeat-request is extremely important link adaptation techniques in a kind of digital communication system.Receiving terminal pair
Its HARQ data bag received enters row decoding, and feeding back ACK signal notifies it to send new HARQ to transmitting terminal if decoding is correct
Packet；NACK signal is fed back if decoding failure and resends HARQ data bag to transmitting terminal, request transmitting terminal.Receiving terminal leads to
Cross and steadily increase redundancy (Increasing Redundancy, abbreviation IR) or Chase (repetition hairs are carried out to the packet repeatedly retransmitted
Send identical data) merge decoding, its successfully decoded probability can be improved, realizes the high reliability request of link transmission.
Under hybrid automatic repeat-request mode, different positions can be specified in circular buffer as transmission every time
The start position that HARQ data bag is read.The definition of redundancy versions (Redundancy Version) determines HARQ data bag
The multiple start positions read in circular buffer, redundancy versions value just determine that this transmission HARQ data bag is slow in circulation
Deposit the specific start position of middle reading.
Circular buffer is typically to be made up of sub-block or sub- bit stream interleaver, and after the parameter of interleaver is to rate-matched
The transmission performance of bit stream can have an impact.Because LDPC code is a kind of Error Correction of Coding based on parity matrix, its
Body has the characteristics of structuring.Therefore the parameter of interleaver must targetedly be determined.
In addition, in broad band wireless transmission, sometimes for the business of transmission burst, such as during the business of low delay, it is necessary to
Take the channel resource of original business.If original business is low density parity check code, then different mappings can generation property
Difference on energy.Nor flat, fine or not in different resource unit upper signal channels is also not quite similar wireless channel simultaneously, and
The importance of each bit of code is also not quite similar in LDPC.Do not designed in the prior art for this feature of LDPC code
Corresponding channel resource mapping ruler.
The content of the invention
The embodiment of the present invention provides method and device, the communication equipment that a kind of data are sent, to realize flexible speed
Match somebody with somebody.
The embodiments of the invention provide a kind of method that data are sent, including：
The CRC of the first length is added to the first bit stream waiting for transmission, obtains the second bit stream；
According to the length of second bit stream and maximum code block length set in advance, by the second class bit stream
It is divided into N1Individual 3rd bit stream Pi, and add the CRC of the second length respectively to the 3rd bit stream, obtain
N1Individual 4th bit stream Ci；Wherein, N1It is positive integer, i is integer, and 0≤i≤N1-1；
To the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual 5th bit stream Di；
To the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；
To the N1Individual 6th bit stream carries out digital baseband modulation, obtains N1 the first stream of modulation symbols Si；
By the first kind stream of modulation symbols SiIt is mapped in physical channel resources.
Alternatively, ifIt is even number, then
IfIt is odd number, thenOr
Wherein, L2For the length of second bit stream, T is the maximum code block length set in advance, operator
The number operation that rounds up is represented respectively.
Alternatively, the low density parity check code is quasi-cyclic low density parity check code, and the low-density is strange
The basis matrix of even parity check code is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, and
And 0<mb<nb.
Alternatively, it is described to the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream
Ei, including：
By the N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row,
The data bit that length-specific is read from the interleaver forms the 6th bit stream Ei,
Wherein, the line number r and columns c of the interleaver are the sizes of the basis matrix of the low density parity check code
And/or the function of the spreading factor.
Alternatively, the line number r of the interleaver is the multiple or the factor of the spreading factor z.
Alternatively, the columns c of the interleaver is the columns n b of basic check matrix multiple or the factor.
Alternatively, it is described by the first stream of modulation symbols SiIt is mapped in physical channel resources, including：
The physical channel resources are divided into multiple resource units, the resource unit comprises at least one on frequency domain
An OFDM symbol on subcarrier and time domain；
Determine the sequence of the multiple resource unit；
By the first stream of modulation symbols SiIn each modulation symbol be sequentially mapped on the multiple resource unit.
Alternatively, the sequence for determining the multiple resource unit is realized by following mode：
According to the channel quality indication (CQI) information order from high to low of each resource unit, the multiple resource unit is determined
Sequence；Or
The multiple resource unit is determined to sort according to whether mapping bursty data, wherein, bursty data is not mapped
Resource unit priority be higher than have mapped bursty data resource unit priority.
Alternatively, it is described by the first stream of modulation symbols SiIn each modulation symbol, be sequentially mapped to the multiple
On resource unit, including：
The 6th bit stream E will be includediSystematic bits modulation symbol, be preferentially mapped to the forward money that sorts
On source unit；Or
The 6th bit stream E will be includediIn correspond to parity matrix or basis matrix row weight it is maximum
Bit sequence, it is preferentially mapped to sort on most forward resource unit.
The embodiment of the present invention also provides the device that a kind of data are sent, including：
Add module, for adding the CRC of the first length to the first bit stream waiting for transmission, obtain the
Two bit streams；
Split module, for the length according to second bit stream and maximum code block length set in advance, by institute
State the second class bit flow point and be segmented into N1Individual 3rd bit stream Pi, and add the circulation of the second length respectively to the 3rd bit stream
Redundancy check code, obtain N1Individual 4th bit stream Ci；Wherein, N1It is positive integer, i is integer, and 0≤i≤N1-1；
Coding module, for the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual
Five bit stream Di；
Matching module, for the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream
Ei；
Modulation module, for the N1Individual 6th bit stream carries out digital baseband modulation, obtains N1 first modulation symbol
Number stream Si；
Mapping block, for by the first kind stream of modulation symbols SiIt is mapped in physical channel resources.
Alternatively, ifIt is even number, then
IfIt is odd number, thenOr
Wherein, L2For the length of second bit stream, T is the maximum code block length set in advance, operator
The number operation that rounds up is represented respectively.
Alternatively, the low density parity check code is quasi-cyclic low density parity check code, and the low-density is strange
The basis matrix of even parity check code is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, and
And 0<mb<nb.
Alternatively, the matching module includes：
Input block, for by the N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row；
Reading unit, the data bit for reading length-specific from the interleaver form the 6th bit stream Ei,
Wherein, the line number r and columns c of the interleaver are the sizes of the basis matrix of the low density parity check code
And/or the function of the spreading factor.
Alternatively, the line number r of the interleaver is the multiple or the factor of the spreading factor z,
The columns c of the interleaver is the columns n b of basic check matrix multiple or the factor.
Alternatively, the mapping block includes：
Division unit, for the physical channel resources to be divided into multiple resource units, the resource unit at least wraps
Include an OFDM symbol on a subcarrier and time domain on frequency domain；
Determining unit, for determining the sequence of the multiple resource unit；
Map unit, for by the first stream of modulation symbols SiIn each modulation symbol be sequentially mapped to it is the multiple
On resource unit.
Alternatively, the determining unit, specifically for the channel quality indication (CQI) information according to each resource unit from height to
Low order, determine the sequence of the multiple resource unit；Or by the multiple resource unit according to whether mapping burst number
According to determining to sort, wherein, the priority for not mapping the resource unit of bursty data is higher than the resource list that have mapped bursty data
The priority of member.
Alternatively, the map unit, specifically for the 6th bit stream E will be includediSystematic bits modulation symbol
Number, it is preferentially mapped to sort on the forward resource unit；Or the 6th bit stream E will be includediIn correspond to odd even
The maximum bit sequence of the row weight of check matrix or basis matrix, it is preferentially mapped to sort on most forward resource unit.
The embodiment of the present invention also provides a kind of communication equipment, including processor and is stored with that the processor is executable to be referred to
The memory of order, when the instruction is executed by processor, perform following operation：To the first bit stream waiting for transmission addition first
The CRC of length, obtain the second bit stream；According to the length of second bit stream and it is set in advance most
Big code block length, the second class bit flow point is segmented into N1Individual 3rd bit stream Pi, and the 3rd bit stream is added respectively
The CRC of second length, obtains N1Individual 4th bit stream Ci；Wherein, N1It is positive integer, i is integer, and 0≤i
≤N1-1；To the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual 5th bit stream Di；It is right
The N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；To the N1Individual 6th bit stream
Digital baseband modulation is carried out, obtains N1 the first stream of modulation symbols Si；By the first kind stream of modulation symbols SiIt is mapped to physics letter
In road resource.
Alternatively, ifIt is even number, thenIfIt is odd number, thenOrWherein, L2For the length of second bit stream, T is the maximum code block length set in advance, operatorThe number operation that rounds up is represented respectively.
Alternatively, the low density parity check code is quasi-cyclic low density parity check code, and the low-density is strange
The basis matrix of even parity check code is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, and
And 0<mb<nb.
Alternatively, it is described to the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei
Including：By the N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row, is read from the interleaver special
The data bit of measured length forms the 6th bit stream Ei, wherein, the line number r and columns c of the interleaver are that the low-density is strange
The function of the basis matrix of even parity check code and/or the spreading factor.
Alternatively, it is described by the first stream of modulation symbols SiIt is mapped in physical channel resources, including：By the physics
Channel resource is divided into multiple resource units, and the resource unit comprises at least one on a subcarrier and time domain on frequency domain
Individual OFDM symbol；Determine the sequence of the multiple resource unit；By the first stream of modulation symbols SiIn it is each
Modulation symbol is sequentially mapped on the multiple resource unit.
Alternatively, the sequence for determining the multiple resource unit is realized by following mode：According to each
The order of the channel quality indication (CQI) information of resource unit from high to low, determines the sequence of the multiple resource unit；Or by institute
Multiple resource units are stated according to whether mapping bursty data to determine to sort, wherein, the resource unit of bursty data is not mapped
Priority is higher than the priority for the resource unit that have mapped bursty data.
Alternatively, it is described by the first stream of modulation symbols SiIn each modulation symbol, be sequentially mapped to the multiple
On resource unit, including：The 6th bit stream E will be includediSystematic bits modulation symbol, be preferentially mapped to sort forward
The resource unit on；Or the 6th bit stream E will be includediIn correspond to parity matrix or basis matrix
The maximum bit sequence of row weight, it is preferentially mapped to sort on most forward resource unit.
To sum up, the embodiment of the present invention provides method and device, the communication equipment that a kind of data are sent, and realizes flexible low close
Spend the rate-matched of parity check code.Bit stream dividing method in this programme, the bit stream after segmentation are even numbers, are so existed
Receiving terminal is easy to the structure using double frame codings when entering row decoding, can improve the handling capacity of decoder, reduce power consumption and
Complexity, the parameter of the deinterleaving method of low density parity check code, wherein interleaver is parity matrix or basis matrix
Function, this interleaver designs are easy to match different code lengths and code check is convenient for resetting between ranks, can reduce complexity
Degree.Systematic bits important in low density parity check code are preferentially mapped to channel condition preferably or not happened suddenly by this programme
On the resource unit of data, the performance of decoding can be improved.
Brief description of the drawings
Fig. 1 is the schematic diagram of the digital communication system of correlation technique；
Fig. 2 is the flow chart for the method that the data of the embodiment of the present invention one are sent；
Fig. 3 is the schematic diagram for the device that the data of the embodiment of the present invention four are sent；
Fig. 4 is the schematic diagram for the device that the data of the embodiment of the present invention five are sent；
Fig. 5 is the schematic diagram for the device that the data of the embodiment of the present invention six are sent；
Fig. 6 is the schematic diagram of the communication apparatus of the embodiment of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Low density parity check code is normally used for the scene with discrete code check, in order to realize flexible rate-matched,
Research is needed to match somebody with somebody matching process for the speed of low density parity check code.Meanwhile circular buffer is typically the intertexture by bit stream
Device forms, and how to design and realizes that the interleaver of low density parity check code is also one and needs to solve the problems, such as.
Embodiment one
The embodiment of the present invention, there is provided a kind of method that data are sent, as shown in Fig. 2 this method includes：
Step 101：For transmitting terminal to the first bit stream I waiting for transmission, addition length is Lcrc1The CRC of bit
Code, obtains the second bit stream J；
Step 102：According to the second bit stream J length L2(bit) and maximum code block length T set in advance (ratio
It is special), the second class bit stream J is divided into N1Individual 3rd bit stream Pi, and to the 3rd bit stream PiLength is added respectively
For Lcrc2The CRC of bit, obtains N1Individual 4th bit stream Ci；Wherein N1It is positive integer, i is integer, and 0≤
i≤N1-1；
Wherein, according to the second bit stream J length L2(bit) and maximum code block length T (bit) set in advance,
The second class bit stream J is divided into N1Individual 3rd class bit stream Pi, wherein N1Determine by the following method：
IfIt is even number, then
IfIt is odd number, thenOr
According to the number N of the 3rd class bit stream of above-mentioned determination1, the second bit stream is carried out uniformly or approaches uniformity divides
Cut, and to the 3rd bit stream PiIt is L to add length respectivelycrc2The CRC of bit, obtains N1Individual 4th bit
Flow Ci；
Wherein operatorWithRepresent upward respectively, downward round numbers operation；
The length of i-th of the 4th class bit streamsMeet：
It is to be less than or equal in value set Π set in advanceMaximum element, or,It is
It is more than or equal in value set Π set in advanceMinimum element.It can be expressed as with formula：
Or
Wherein,It is the length of i-th of the 4th bit streams.
The bit stream dividing method that the method for the present embodiment provides, the bit stream after segmentation is even number, is so being received
The structure being easy to when into row decoding using double frame codings is held, the handling capacity of decoder can be improved, reduce power consumption and complexity
Degree.
Step 103：To the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual 5th ratio
Spy's stream Di；
Wherein, the low density parity check code is defined the low density parity check code of circulation (or " structuring "), and
The basis matrix of the low density parity check code is the matrix of a mb rows nb row；The size of the spreading factor isWherein, mb, nb, z are positive integers, also, 0<mb<nb.
Step 104：To described N1 the 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；
The step may comprise steps of：
Step 104.1, by described N1Individual 5th bit stream is input in the interleaver of r rows c row；
Wherein, the line number r and columns c of the interleaver are basis matrix and/or the institute of the low density parity check code
State the function of spreading factor；
Further, the line number r of the interleaver is the multiple of the spreading factor z or z；
Further, the columns c of the interleaver is the columns n b or nb of the basic check matrix multiple；
Further, methods described also includes：
According to given rearrangement vector, reset entering ranks to the bit stream being input in each interleaver respectively；
Step 104.2, the data bit of reading length-specific forms the 6th bit stream E from the interleaveri；
For each 5th bit stream DiSince given original position, length-specific is read by column along the order of row
Data bit form the 6th bit stream Ei。
The deinterleaving method of low density parity check code is present embodiments provided, the parameter of wherein interleaver is even-odd check square
The function of battle array or basis matrix.This interleaver designs are easy to match different code lengths and code check is convenient for into weight between ranks
Row, can reduce complexity.
Step 105：Digital baseband modulation is carried out to the N1 the 6th bit streams, obtains N1Individual first stream of modulation symbols Si；
Step 106：By the first kind stream of modulation symbols SiIt is mapped in physical channel resources.
Alternatively, the 6th bit stream E will be includediSystematic bits modulation symbol, be preferentially mapped to sort forward
Resource unit on；Or
The physical channel resources are divided into multiple resource units；Wherein described resource unit is comprised at least on frequency domain
On one subcarrier and time domain an OFDM (Orthogonal Frequency Division Multiplexing, it is orthogonal
Frequency division multiplexing) symbol；
The sequence of the multiple resource unit is determined, by the first stream of modulation symbols SiIn each modulation symbol, according to
It is secondary to be mapped on the multiple resource unit；
Wherein, it is determined as follows the sequence of the multiple resource unit：
According to channel quality indication (CQI) information CQI (Channel Quality Indicator, the channel of each resource unit
Quality indicates) order from high to low, determine the sequence of the multiple resource unit；
Or by the multiple resource unit, determine to sort according to whether mapping bursty data, wherein, do not map prominent
The priority for sending out the resource unit of data is higher than the priority for the resource unit that have mapped bursty data；
The 6th bit stream E will be includediIn correspond to parity matrix or basis matrix row weight it is maximum
Bit sequence, it is preferentially mapped to sort on most forward resource unit.Wherein, the row weight refers to the row of the basis matrix
The number of non-1 element in element.
A kind of new method for mapping resource is present embodiments provided, by systematic bits important in low density parity check code
Be preferentially mapped to that channel condition is preferable or resource unit without bursty data on, the performance of decoding can be improved.
The method of the embodiment of the present invention can realize the rate-matched of flexible low density parity check code.
Embodiment two：
Step 201：Transmitting terminal is L to length1The first bit stream I waiting for transmission of=20000 bits, addition length are
Lcrc1The CRC of=24 bits, it is L to obtain length2Second bit stream J of=20024 bits；
Step 202：Maximum code block length set in advance is T=6120 bits.
Second bit stream I is split, becauseOdd number, then the number of the 3rd bit stream after splittingTo the 3rd bit stream PiIt is L to add length respectivelycrc2The CRC of=24 bits
Code, obtains N1Individual 4th bit stream Ci, its length is an element in the value set Π set in advance, also,
The length of i-th of the 4th bit streamsIt is to be less than or equal in the value set Π set in advanceThe maximum element of bit, or it is minimum more than or equal to 5040 bits
Element.
In this example, it is assumed that the set Π set in advance for ..., 4800,4864,4928,4992,
5056,5120,5184 ... ... }, then the length of i-th of the 4th bit streamsOrIn this example
In, the length of the 0th the 4th bit stream isBit, the 1st, the 2nd and the 3rd the 4th bitstream length are allBit.Wherein, the filling of 60 bits is with the addition of on the most forward position of the 0th the 4th bit stream
Bit.
Step 203：To the 4th bit stream CiIt is respectively adopted and carries out low density parity check code coding, obtains N1=4
5th bit stream Di；
Wherein, the low density parity check code is defined the low density parity check code of circulation (or " structuring "), and
The basis matrix of the low density parity check code is the matrix of a mb=4 rows nb=12 row；The size of the spreading factor
ForWherein, the spreading factor of the 0th bit stream is z=624；The expansion of 1st, the 2nd and the 3rd the 4th bit stream
It is 632 to open up the factor.
Step 204：To described N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei,
It may comprise steps of：
Step 204.1, by described N1Individual 5th bit stream is input in the interleaver of r rows c row；
In this example, it is assumed that the line number r of the interleaver is equal to spreading factor r=z, the columns of interleaver is equal to
The columns c=nb of basis matrix；Wherein, bit stream D0Interleaver be 624 rows 12 row interleaver, bit stream D1, D2And D3Institute
Interleaver is the interleaver of 632 rows 12 row；
Step 204.2, entering ranks according to given rearrangement vector to each bit stream being input in interleaver
Permutatation；In this example it is assumed that it is PV=[1,2,3,4,5,6,7,8,12,10,9,11] to reset vector；The PV vector representations
Column index after rearrangement.Wherein column index is since 1.
Step 204.3, in this example, it is assumed that the length of each 6th bit stream is 6000 bits；From for every
Bit stream after individual rearrangement, since given original position, the number that length is 6000 bits is read by column along the order of row
The 6th bit stream E is formed according to biti；Wherein, described original position can be indicated originally by redundancy version.
Step 205：Digital baseband modulation is carried out to the N1 the 6th bit streams, obtains N1Individual first stream of modulation symbols Si；
The digital baseband modulation can be QPSK (Quadrature Phase Shift Keying, quadrature phase shift key
Control), 16QAM (Quadrature Amplitude Modulation, phase quadrature amplitude modulation), 64QAM or 256QAM are adjusted
System, wherein including 2 bits, 4 bits, 6 bits or 8 bit datas in each modulation symbol respectively；In this example it is assumed that it is
16QAM is modulated, and each 16QAM modulation symbols include 4 bit datas.
Step 206：By the first stream of modulation symbols SiIt is mapped in physical channel resources；
Wherein, the physical resource dividing is two resource units, and each resource unit comprises at least one on frequency domain
An OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency on individual subcarrier and time domain
Divide multiplexing) symbol；Wherein, there is bursty data on first resource unit, there is no bursty data on Secondary resource unit, therefore, the
The priority of two resource units is higher than first resource unit.
The modulation symbol for the systematic bits for corresponding to the 6th bit stream in first stream of modulation symbols is preferentially mapped to
On the resource unit of high priority.Assuming that in the present embodiment, the first stream of modulation symbols S1In preceding 1264 16QAM symbols
{s0, s1..., s1263Correspond to the 6th bit stream E1Systematic bits, S1In rear 236 16QAM symbols { s1264,
s1265..., s1499Correspond to the 6th bit stream E1Check bit, then described preceding 1264 16QAM are preferentially mapped to
On two resource units.
Other first stream of modulation symbols also do similar process.
Embodiment three：
Step 301：Transmitting terminal is L to length1The first bit stream I waiting for transmission of=20000 bits, addition length are
Lcrc1The CRC of=24 bits, it is L to obtain length2Second bit stream J of=20024 bits；
Step 302：Maximum code block length set in advance is T=6120 bits.
Second bit stream I is split, becauseOdd number, then the number of the 3rd bit stream after splittingTo the 3rd bit stream PiIt is L to add length respectivelycrc2The CRC of=24 bits
Code, obtains N1Individual 4th bit stream Ci, its length is an element in the value set Π set in advance, also,
The length of i-th of the 4th bit streamsIt is to be less than or equal in the value set Π set in advanceThe maximum element of bit, or it is minimum more than or equal to 3361 bits
Element.
In this example, it is assumed that the set Π set in advance for ..., 3200,3264,3328,3392,
3456,3520 ... }, then the length of i-th of the 4th bit streamsOrIn the present embodiment,
The length of 0th and the 1st the 4th bit stream isBit, the 1st, the 2nd, the 3rd, the 4th, the 5th, the 6th the 4th ratio
Spy flows lengthBit.Wherein, add on the most forward position of the 0th the 4th bit stream
The filling bit of 56 bits is added.
Step 303：To the 4th bit stream CiIt is respectively adopted and carries out low density parity check code coding, obtains N1=6
5th bit stream Di；
Wherein, the low density parity check code is defined the low density parity check code of circulation (or " structuring "), and
The basis matrix of the low density parity check code is the matrix of a mb=4 rows nb=12 row；The size of the spreading factor
ForWherein, the spreading factor of the 0th and the 1st bit stream is z=416；1st, the 2nd and the 3rd the 4th bit
The spreading factor of stream is 424.
Step 304：To described N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei,
It may comprise steps of：
Step 304.1, by described N1Individual 5th bit stream is input in the interleaver of r rows c row；
In this example, it is assumed that the line number r of the interleaver is the multiple or factor r=a*z of spreading factor, interweave
The columns of device is equal to the multiple or factor c=nb/a of the columns of basis matrix, and wherein a is positive number.
In this example, it is assumed that a=1/2, then bit stream D0And D1Interleaver be 208 rows 24 row interleaver, bit
Flow D1, D2And D3Interleaver used is the interleaver of 212 rows 24 row；
Step 304.2, entering ranks according to given rearrangement vector to each bit stream being input in interleaver
Permutatation；
In the present embodiment assume reset vector for PV=[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
16,23,24,19,20,17,18,21,22]；Wherein, each element in PV vectors represents 1 row in interleaver；The PV to
Amount represents the column index after resetting.Wherein column index is since 1.
Step 305：Digital baseband modulation is carried out to the N1 the 6th bit streams, obtains N1Individual first stream of modulation symbols Si；
The digital baseband modulation can be QPSK, 16QAM, 64QAM or 256QAM modulation, wherein each modulation symbol
It is middle to include 2 bits, 4 bits, 6 bits or 8 bit datas respectively；It is assumed to be QPSK modulation, each QPSK in the present embodiment
Modulation symbol includes 2 bit datas.
Step 306：By the first stream of modulation symbols SiIt is mapped in physical channel resources；
Wherein, the physical resource dividing is 4 resource units, and each resource unit comprises at least one on frequency domain
An OFDM symbol on subcarrier and time domain；Wherein, from high to low suitable of the channel indicating information CQI on each resource unit
Sequence is CQI2≥CQI3≥CQI1≥CQI4；Then the priority orders of each resource unit are the highest priority of resource unit 2,
The priority of resource unit 3 is taken second place, the priority the 3rd of resource unit 1, and the priority of resource unit 4 is minimum.
The modulation symbol for the systematic bits for corresponding to the 6th bit stream in first stream of modulation symbols is preferentially mapped to
The resource unit of high priority.Assuming that in this example, the first stream of modulation symbols S1In preceding 1664 QPSK symbols { s0,
s1..., s1663Correspond to the 6th bit stream E1Systematic bits, S1In rear 832 QPSK symbols { s1664, s1665...,
s2495Correspond to the 6th bit stream E1Check bit, then described preceding 1664 16QAM are preferentially mapped to Secondary resource list
In member, then it is mapped on information resources unit, followed by first resource unit, it is finally the 4th resource unit.
Other first stream of modulation symbols also do similar process.
The method of the embodiment of the present invention has advantages below：
The method of the present embodiment can realize the rate-matched of flexible low density parity check code.
The method of the present embodiment also provides a kind of new bit stream dividing method, and the bit stream after segmentation is even number, this
Sample is easy to the structure using double frame codings when receiving terminal enters row decoding, can improve the handling capacity of decoder, reduce work(
Consumption and complexity；
The method of the present embodiment also provides a kind of deinterleaving method suitable for low density parity check code, wherein interleaver
Parameter is the function of parity matrix or basis matrix, and this interleaver designs are easy to match different code lengths and code check just
In reset between ranks, complexity can be reduced；
The method of the present embodiment also provides a kind of new method for mapping resource, is by important in low density parity check code
System bit priority is mapped to that channel condition is preferable, or without on the resource unit of bursty data, can improve the performance of decoding.
Example IV
Fig. 3 is the schematic diagram for the device that a kind of data of the embodiment of the present invention are sent, as shown in figure 3, the dress of the present embodiment
Put including：
Add module, for adding the CRC of the first length to the first bit stream waiting for transmission, obtain the
Two bit streams；
Split module, for the length according to second bit stream and maximum code block length set in advance, by institute
State the second class bit flow point and be segmented into N1Individual 3rd bit stream Pi, and add the circulation of the second length respectively to the 3rd bit stream
Redundancy check code, obtain N1Individual 4th bit stream Ci；Wherein, N1It is positive integer, i is integer, and 0≤i≤N1-1；Wherein,
IfIt is even number, then
IfIt is odd number, thenOr
Wherein, L2For the length of second bit stream, T is the maximum code block length set in advance, operator
The number operation that rounds up is represented respectively.
Coding module, for the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual
Five bit stream Di；
Matching module, for the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream
Ei；
Modulation module, for the N1Individual 6th bit stream carries out digital baseband modulation, obtains N1 first modulation symbol
Number stream Si；
Mapping block, for by the first kind stream of modulation symbols SiIt is mapped in physical channel resources.
Wherein, the low density parity check code is quasi-cyclic low density parity check code, and the low-density parity
The basis matrix of check code is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, also,
0<mb<nb。
Embodiment five
In the present embodiment, as shown in figure 4, the matching module includes：
Input block, for by the N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row；
Reading unit, the data bit for reading length-specific from the interleaver form the 6th bit stream Ei,
Wherein, the line number r and columns c of the interleaver are basis matrix and/or the institute of the low density parity check code
State the function of spreading factor.
Wherein, the line number r of the interleaver is the multiple or the factor of the spreading factor z,
The columns c of the interleaver is the columns n b of basic check matrix multiple or the factor.
For a better understanding of the present invention, the present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment six
In the present embodiment, as shown in figure 5, the mapping block includes：
Division unit, for the physical channel resources to be divided into multiple resource units, the resource unit at least wraps
Include an OFDM symbol on a subcarrier and time domain on frequency domain；
Determining unit, for determining the sequence of the multiple resource unit；
Map unit, for by the first stream of modulation symbols SiIn each modulation symbol be sequentially mapped to it is the multiple
On resource unit.
Wherein, the determining unit, it specifically can be used for channel quality indication (CQI) information according to each resource unit from height
To low order, the sequence of the multiple resource unit is determined；Or the multiple resource unit is happened suddenly according to whether mapping
Data determine to sort, wherein, the priority for not mapping the resource unit of bursty data is higher than the resource that have mapped bursty data
The priority of unit.
The map unit, specifically it can be used for comprising the 6th bit stream EiSystematic bits modulation symbol,
It is preferentially mapped to sort on the forward resource unit；Or the 6th bit stream E will be includediIn correspond to even-odd check
The maximum bit sequence of the row weight of matrix or basis matrix, it is preferentially mapped to sort on most forward resource unit.
The embodiment of the present invention additionally provides a kind of communication equipment, as shown in fig. 6, including processor and being stored with the place
The memory of device executable instruction is managed, when the instruction is executed by processor, performs following operation：Compare waiting for transmission first
The CRC of spy's stream the first length of addition, obtains the second bit stream；According to the length of second bit stream and
Maximum code block length set in advance, the second class bit flow point is segmented into N1Individual 3rd bit stream Pi, and compare the described 3rd
Spy's stream adds the CRC of the second length respectively, obtains N1Individual 4th bit stream Ci；Wherein, N1It is positive integer, i is
Integer, and 0≤i≤N1-1；To the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual
Five bit stream Di；To the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；To the N1
Individual 6th bit stream carries out digital baseband modulation, obtains N1 the first stream of modulation symbols Si；By the first kind stream of modulation symbols Si
It is mapped in physical channel resources.
Alternatively, ifIt is even number, thenIfIt is odd number, thenOrWherein, L2For the length of second bit stream, T is the maximum code block length set in advance, operatorThe number operation that rounds up is represented respectively.
Alternatively, the low density parity check code is quasi-cyclic low density parity check code, and the low-density is strange
The basis matrix of even parity check code is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, and
And 0<mb<nb.
Alternatively, it is described to the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei
Including：By the N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row, is read from the interleaver special
The data bit of measured length forms the 6th bit stream Ei, wherein, the line number r and columns c of the interleaver are that the low-density is strange
The function of the basis matrix of even parity check code and/or the spreading factor.
Alternatively, it is described by the first stream of modulation symbols SiIt is mapped in physical channel resources, including：By the physics
Channel resource is divided into multiple resource units, and the resource unit comprises at least one on a subcarrier and time domain on frequency domain
Individual OFDM symbol；Determine the sequence of the multiple resource unit；By the first stream of modulation symbols SiIn it is each
Modulation symbol is sequentially mapped on the multiple resource unit.
Alternatively, the sequence for determining the multiple resource unit is realized by following mode：According to each
The order of the channel quality indication (CQI) information of resource unit from high to low, determines the sequence of the multiple resource unit；Or by institute
Multiple resource units are stated according to whether mapping bursty data to determine to sort, wherein, the resource unit of bursty data is not mapped
Priority is higher than the priority for the resource unit that have mapped bursty data.
Alternatively, it is described by the first stream of modulation symbols SiIn each modulation symbol, be sequentially mapped to the multiple
On resource unit, including：The 6th bit stream E will be includediSystematic bits modulation symbol, be preferentially mapped to sort forward
The resource unit on；Or the 6th bit stream E will be includediIn correspond to parity matrix or basis matrix
The maximum bit sequence of row weight, it is preferentially mapped to sort on most forward resource unit.
The embodiment of the present invention additionally provides a kind of computer-readable recording medium, and it is stored with computer executable instructions,
Realized when the computer executable instructions are performed and perform following operation：
The CRC of the first length is added to the first bit stream waiting for transmission, obtains the second bit stream；According to
The length of second bit stream and maximum code block length set in advance, the second class bit flow point is segmented into N1Individual
Three bit stream Pi, and add the CRC of the second length respectively to the 3rd bit stream, obtain N1Individual 4th bit
Flow Ci；Wherein, N1It is positive integer, i is integer, and 0≤i≤N1-1；To the 4th bit stream CiIt is strange that low-density is carried out respectively
Even parity check code encodes, and obtains N1Individual 5th bit stream Di；To the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1
Individual 6th bit stream Ei；To the N1Individual 6th bit stream carries out digital baseband modulation, obtains N1 the first stream of modulation symbols Si；
By the first kind stream of modulation symbols SiIt is mapped in physical channel resources.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, each module/unit in above-described embodiment can be realized in the form of hardware, can also use the shape of software function module
Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.
The preferred embodiments of the present invention are these are only, certainly, the present invention can also there are other various embodiments, without departing substantially from this
In the case of spirit and its essence, those skilled in the art work as can make various corresponding changes according to the present invention
And deformation, but these corresponding changes and deformation should all belong to the protection domain of appended claims of the invention.
Claims (24)
1. a kind of method that data are sent, including：
The CRC of the first length is added to the first bit stream waiting for transmission, obtains the second bit stream；
According to the length of second bit stream and maximum code block length set in advance, the second class bit stream is split
For N1Individual 3rd bit stream Pi, and add the CRC of the second length respectively to the 3rd bit stream, obtain N1It is individual
4th bit stream Ci；Wherein, N1It is positive integer, i is integer, and 0≤i≤N1-1；
To the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual 5th bit stream Di；
To the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；
To the N1Individual 6th bit stream carries out digital baseband modulation, obtains N1 the first stream of modulation symbols Si；
By the first kind stream of modulation symbols SiIt is mapped in physical channel resources.
2. the method as described in claim 1, it is characterised in that
IfIt is even number, then
IfIt is odd number, thenOr
Wherein, L2For the length of second bit stream, T is the maximum code block length set in advance, operatorRespectively
Expression, which rounds up, counts operation.
3. the method as described in claim 1, it is characterised in that
The low density parity check code is quasi-cyclic low density parity check code, and the base of the low density parity check code
Plinth matrix is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, also, 0<mb<nb.
4. the method as described in claim any one of 1-3, it is characterised in that described to the N1Individual 5th bit stream DiRespectively
Rate-matched is carried out, exports N1Individual 6th bit stream Ei, including：
By the N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row,
The data bit that length-specific is read from the interleaver forms the 6th bit stream Ei,
Wherein, the line number r and columns c of the interleaver be the basis matrix of the low density parity check code size and/or
The function of the spreading factor.
5. method as claimed in claim 4, it is characterised in that
The line number r of the interleaver is the multiple or the factor of the spreading factor z.
6. method as claimed in claim 4, it is characterised in that
The columns c of the interleaver is the columns n b of basic check matrix multiple or the factor.
7. the method as described in claim 1, it is characterised in that described by the first stream of modulation symbols SiIt is mapped to physics letter
In road resource, including：
The physical channel resources are divided into multiple resource units, the son that the resource unit is comprised at least on frequency domain carries
An OFDM symbol on ripple and time domain；
Determine the sequence of the multiple resource unit；
By the first stream of modulation symbols SiIn each modulation symbol be sequentially mapped on the multiple resource unit.
8. method as claimed in claim 7, it is characterised in that the sequence for determining the multiple resource unit is under
What the mode in face was realized：
According to the channel quality indication (CQI) information order from high to low of each resource unit, the row of the multiple resource unit is determined
Sequence；Or
The multiple resource unit is determined to sort according to whether mapping bursty data, wherein, do not map the money of bursty data
The priority of source unit is higher than the priority for the resource unit that have mapped bursty data.
9. method as claimed in claim 7, it is characterised in that described by the first stream of modulation symbols SiIn each modulation
Symbol, it is sequentially mapped on the multiple resource unit, including：
The 6th bit stream E will be includediSystematic bits modulation symbol, be preferentially mapped to the forward resource list that sorts
In member；Or
The 6th bit stream E will be includediIn correspond to the maximum bit sequence of row weight of parity matrix or basis matrix
Row, it is preferentially mapped to sort on most forward resource unit.
A kind of 10. device that data are sent, it is characterised in that including：
Add module, for adding the CRC of the first length to the first bit stream waiting for transmission, obtain the second ratio
Spy's stream；
Split module, for the length according to second bit stream and maximum code block length set in advance, by described the
Two class bit flow points are segmented into N1Individual 3rd bit stream Pi, and add the cyclic redundancy of the second length respectively to the 3rd bit stream
Check code, obtain N1Individual 4th bit stream Ci；Wherein, N1It is positive integer, i is integer, and 0≤i≤N1-1；
Coding module, for the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual 5th ratio
Spy's stream Di；
Matching module, for the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；
Modulation module, for the N1Individual 6th bit stream carries out digital baseband modulation, obtains N1 the first stream of modulation symbols
Si；
Mapping block, for by the first kind stream of modulation symbols SiIt is mapped in physical channel resources.
11. device as claimed in claim 10, it is characterised in that
IfIt is even number, then
IfIt is odd number, thenOr
Wherein, L2For the length of second bit stream, T is the maximum code block length set in advance, operatorRespectively
Expression, which rounds up, counts operation.
12. device as claimed in claim 10, it is characterised in that
The low density parity check code is quasi-cyclic low density parity check code, and the base of the low density parity check code
Plinth matrix is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, also, 0<mb<nb.
13. the device as described in claim 10 or 12, it is characterised in that the matching module includes：
Input block, for by the N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row；
Reading unit, the data bit for reading length-specific from the interleaver form the 6th bit stream Ei,
Wherein, the line number r and columns c of the interleaver be the basis matrix of the low density parity check code size and/or
The function of the spreading factor.
14. device as claimed in claim 13, it is characterised in that
The line number r of the interleaver is the multiple or the factor of the spreading factor z,
The columns c of the interleaver is the columns n b of basic check matrix multiple or the factor.
15. device as claimed in claim 10, it is characterised in that the mapping block includes：
Division unit, for the physical channel resources to be divided into multiple resource units, the resource unit comprises at least frequency
An OFDM symbol on a subcarrier and time domain on domain；
Determining unit, for determining the sequence of the multiple resource unit；
Map unit, for by the first stream of modulation symbols SiIn each modulation symbol be sequentially mapped to the multiple resource
On unit.
16. device as claimed in claim 15, it is characterised in that
The determining unit, specifically for the order of the channel quality indication (CQI) information according to each resource unit from high to low, really
The sequence of fixed the multiple resource unit；Or by the multiple resource unit according to whether mapping bursty data come the row of determination
Sequence, wherein, the priority for not mapping the resource unit of bursty data is higher than the priority for the resource unit that have mapped bursty data.
17. device as claimed in claim 15, it is characterised in that
The map unit, specifically for the 6th bit stream E will be includediSystematic bits modulation symbol, be preferentially mapped to
Sort on the forward resource unit；Or the 6th bit stream E will be includediIn correspond to parity matrix or base
The maximum bit sequence of plinth matrix column weight, it is preferentially mapped to sort on most forward resource unit.
18. a kind of communication equipment, it is characterised in that including processor and be stored with the storage of the processor-executable instruction
Device, when the instruction is executed by processor, perform following operation：The first length is added to the first bit stream waiting for transmission to follow
Ring redundancy check code, obtain the second bit stream；According to the length of second bit stream and maximum code block length set in advance
Degree, N is segmented into by the second class bit flow point1Individual 3rd bit stream Pi, and the second length is added respectively to the 3rd bit stream
CRC, obtain N1Individual 4th bit stream Ci；Wherein, N1It is positive integer, i is integer, and 0≤i≤N1-1；
To the 4th bit stream CiLow density parity check code coding is carried out respectively, obtains N1Individual 5th bit stream Di；To the N1It is individual
5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream Ei；To the N1Individual 6th bit stream carries out numeral
Baseband modulation, obtain N1 the first stream of modulation symbols Si；By the first kind stream of modulation symbols SiIt is mapped to physical channel resources
On.
19. communication equipment as claimed in claim 18, it is characterised in that
IfIt is even number, thenIfIt is odd number, thenOrIts
In, L2For the length of second bit stream, T is the maximum code block length set in advance, operatorRepresent respectively to
Upper round numbers operation.
20. communication equipment as claimed in claim 18, it is characterised in that
The low density parity check code is quasi-cyclic low density parity check code, and the base of the low density parity check code
Plinth matrix is the matrix of mb rows nb row, spreading factor z；Wherein, mb, nb, z are positive integer, also, 0<mb<nb.
21. the communication equipment as described in claim any one of 18-20, it is characterised in that
It is described to the N1Individual 5th bit stream DiRate-matched is carried out respectively, exports N1Individual 6th bit stream EiIncluding：By described in
N1The individual 5th bit stream DiIt is separately input in the interleaver of r rows c row, the number of length-specific is read from the interleaver
The 6th bit stream E is formed according to biti, wherein, the line number r and columns c of the interleaver are the low density parity check codes
The function of basis matrix and/or the spreading factor.
22. communication equipment as claimed in claim 18, it is characterised in that
It is described by the first stream of modulation symbols SiIt is mapped in physical channel resources, including：The physical channel resources are divided
For multiple resource units, the resource unit comprises at least an orthogonal frequency division multiplexing on a subcarrier and time domain on frequency domain
Use symbol；Determine the sequence of the multiple resource unit；By the first stream of modulation symbols SiIn each modulation symbol successively
It is mapped on the multiple resource unit.
23. communication equipment as claimed in claim 22, it is characterised in that
The sequence for determining the multiple resource unit is realized by following mode：According to the letter of each resource unit
The order of road quality indication (CQI) information from high to low, determines the sequence of the multiple resource unit；Or by the multiple resource list
Member determines to sort according to whether mapping bursty data, wherein, the priority of resource unit of bursty data is not mapped higher than reflecting
The priority of the resource unit of bursty data is penetrated.
24. communication equipment as claimed in claim 22, it is characterised in that
It is described by the first stream of modulation symbols SiIn each modulation symbol, be sequentially mapped on the multiple resource unit, wrap
Include：The 6th bit stream E will be includediSystematic bits modulation symbol, be preferentially mapped to the forward resource list that sorts
In member；Or the 6th bit stream E will be includediIn correspond to parity matrix or basis matrix row weight it is maximum
Bit sequence, it is preferentially mapped to sort on most forward resource unit.
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| CN113612573B (en) * | 2020-05-04 | 2022-10-11 | 华为技术有限公司 | Communication method and device |
| CN114499764A (en) * | 2022-03-11 | 2022-05-13 | Oppo广东移动通信有限公司 | Rate matching and de-matching method and device, mobile terminal and storage medium |
| CN114499766B (en) * | 2022-04-14 | 2022-07-12 | 武汉卓鹰世纪科技有限公司 | Rail transit trip method and device based on NFC technology |
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| US8046668B2 (en) * | 2007-01-31 | 2011-10-25 | Samsung Electronics Co., Ltd | Method and apparatus for code block segmentation in a mobile communication system |
| CN101388743B (en) * | 2007-09-13 | 2012-05-23 | 中兴通讯股份有限公司 | Physical channel mapping device and mapping method for OFDM system |
| CN101667884A (en) * | 2008-09-03 | 2010-03-10 | 中兴通讯股份有限公司 | Method and device for coding channel and method and device for decoding channel |
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| WO2021139558A1 (en) * | 2020-01-08 | 2021-07-15 | 华为技术有限公司 | Data processing method and apparatus |
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| WO2018028476A1 (en) | 2018-02-15 |
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