CN103973402B - Data transmission method for uplink, method of reseptance and equipment - Google Patents
Data transmission method for uplink, method of reseptance and equipment Download PDFInfo
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- CN103973402B CN103973402B CN201310047542.XA CN201310047542A CN103973402B CN 103973402 B CN103973402 B CN 103973402B CN 201310047542 A CN201310047542 A CN 201310047542A CN 103973402 B CN103973402 B CN 103973402B
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Abstract
The embodiment of the present invention provides a kind of data transmission method for uplink, method of reseptance and equipment.Sending method includes: to divide to data block to be sent, obtains multiple source symbols；Fountain codes Fountain coding is carried out to the multiple source symbol, symbol after exporting multiple codings and the symbol after sending the multiple coding to receiving end, stop carrying out the source symbol Fountain coding when receiving the confirmation message of receiving end return, the confirmation message is successfully received the data block to be sent for identifying the receiving end.Communication efficiency can be improved by using Fountain coding mode in technical solution of the present invention.
Description
Technical field
The present embodiments relate to the communication technology more particularly to a kind of data transmission method for uplink, method of reseptance and equipment.
Background technique
Communication (the Machine of machine type in long term evolution (Long Term Evolution, referred to as LTE) system
Type Communication, referred to as MTC) in business, due to certain MTC terminals be mounted on interior of building corner or by
Metal shell surrounds, and therefore, the loss of the communication path between MTC terminal and its opposite equip. is larger.For improve MTC terminal with
Communication quality between its opposite equip., in research of the LTE about MTC, it is desirable that the coverage area of MTC terminal compares ordinary terminal
Enhance 20dB, coverage area enhancing 20dB means that block number evidence takes around repetition 100 times.
In a block number according to about needing in the communication process for repeating 100 times, if transmitting terminal can to the block number in by
Those strongly disturbing bits (bits) are repeated several times, and are not repeated as many times to the bit being not necessarily to repeatedly, not only
It can guarantee the reliability of the block data communication, and communication efficiency can be improved.But due to channel during practical communication
The randomness of variation, transmitting terminal are difficult know which bit receives strong interference in the block number that receiving end receives, from
And which bit can not know more repeat.Then the prior art uses finite rate channel coding technology, example
Such as RM(Reed Muller, referred to as RM), convolutional code (Convolutional Coding, referred to as CC) etc. carries out data
Coding, sends, this reduces the efficiency of communication after the data counterpoise after coding is then answered same number.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method for uplink, method of reseptance and equipment, to improve communication efficiency.
First aspect provides a kind of data transmission method for uplink, comprising:
Data block to be sent is divided, multiple source symbols are obtained；
Fountain codes Fountain coding carried out to the multiple source symbol, symbol after exporting multiple codings and to receiving end
Symbol after sending the multiple coding stops carrying out the source symbol when receiving the confirmation message that the receiving end returns
Fountain coding, the confirmation message are successfully received the data block to be sent for identifying the receiving end.
With reference to first aspect, in the first possible implementation of the first aspect, described to described in the transmission of receiving end
Symbol after multiple codings, comprising: on the transfer resource being assigned within the unit time, send one to the receiving end every time
Symbol after coding.
With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible
It is described that data block to be sent is divided in implementation, before obtaining multiple source symbols, further includes: be original data block
Cyclic redundancy check code is added, the data block to be sent is obtained.
With reference to first aspect or second of the first possible implementation of first aspect or first aspect possible
Implementation, it is in a third possible implementation of the first aspect, described that data block to be sent is divided, it obtains more
A source symbol, comprising: equal part is carried out to the data block to be sent, obtains the identical the multiple source symbol of size.
Second aspect provides a kind of data receiver method, comprising:
The multiple received symbols for reaching receiving end by transmission by the symbol after multiple codings of transmitting terminal are received,
Wherein, the symbol after the multiple coding is that the transmitting terminal carries out fountain to multiple source symbols that data block to be sent marks off
Code Fountain is encoded；
Calculate the confidence level of the multiple received symbol；
Confidence level in the multiple received symbol is greater than at least one symbol of confidence level thresholding as at least one
Aiming symbol；
Fountain decoding is carried out at least one described aiming symbol, and after decoding success, is sent out to the transmitting terminal
Confirmation message is sent, the confirmation message is successfully received the data block to be sent for identifying the receiving end.
In conjunction with second aspect, in the first possible implementation of the second aspect, the multiple received symbol is calculated
Number confidence level include: that hard decision is carried out to each received symbol, obtain each hard decision symbol；According to each reception
The amplitude of symbol and the amplitude of each hard decision symbol calculate noise energy, and according to each hard decision symbol
Amplitude calculates the energy of each hard decision symbol；According to the energy of the noise energy and each hard decision symbol,
Obtain confidence level of the corresponding signal-to-noise ratio of each received symbol as each received symbol.
In conjunction with the possible implementation of the first of second aspect or second aspect, second in second aspect is possible
In implementation, after decoding success, confirmation message is sent to the transmitting terminal, comprising: decode at least one aiming symbol
Symbol out carries out cyclic redundancy check (CRC)；If CRC check success sends the confirmation message to the transmitting terminal.
Second in conjunction with the possible implementation of the first of second aspect or second aspect or second aspect is possible
Implementation, it is in the third possible implementation of the second aspect, described by confidence level in the multiple received symbol
It as at least one aiming symbol include: to be obtained from the multiple received symbol greater than at least one symbol of confidence level thresholding
Confidence level is taken to be greater than E symbol of confidence level thresholding；Select the maximum M symbol of confidence level as institute from the E symbol
State at least one aiming symbol；Wherein, T < M < E < N, T are the number of the multiple source symbol, and N is the multiple received symbol
Number, and T, M, E and N are natural number.
The third aspect provides a kind of sending ending equipment, comprising:
Division module obtains multiple source symbols for dividing to data block to be sent；
Coding module, for carrying out fountain codes Fountain coding to the multiple source symbol, after exporting multiple codings
Symbol stops carrying out Fountain coding, the confirmation letter to the source symbol when receiving the confirmation message of receiving end return
Breath is successfully received the data block to be sent for identifying the receiving end；
Sending module, the symbol after the multiple coding for sending the coding module output to the receiving end；
Receiving module, the confirmation message returned for receiving the receiving end.
In conjunction with the third aspect, in the first possible implementation of the third aspect, the sending module is specifically used for
Symbol on the transfer resource being assigned within the unit time, after sending a coding to the receiving end every time.
In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect is possible
In implementation, the sending ending equipment further include: adding module is used in the division module to the data block to be sent
Before being divided, cyclic redundancy check code is added for original data block, obtains the data block to be sent.
Second in conjunction with the possible implementation of the first of the third aspect or the third aspect or the third aspect is possible
In implementation, the division module is specifically used for carrying out equal part to the data block to be sent, and it is identical described to obtain size
Multiple source symbols.
Fourth aspect provides a kind of receiving device, comprising:
Receiving module reaches the more of receiving end by transmission for receiving the symbol after multiple codings by transmitting terminal
A received symbol, wherein the symbol after the multiple coding marks off data block to be sent for the transmitting terminal multiple
Source symbol carries out what fountain codes Fountain was encoded；
Module is obtained, for calculating the confidence level of the multiple received symbol, by can in the multiple received symbol
Reliability is greater than at least one symbol of confidence level thresholding as at least one aiming symbol；
Decoding module, for carrying out Fountain decoding at least one described aiming symbol；
Sending module, for sending confirmation message, the determining letter to the transmitting terminal after decoding module decoding success
Breath is successfully received the data block to be sent for identifying the receiving device.
In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the acquisition module is specifically used for
Hard decision is carried out to each received symbol, obtains each hard decision symbol, according to the amplitude of each received symbol and described
The amplitude of each hard decision symbol calculates noise energy, and described each hard according to the calculating of the amplitude of each hard decision symbol
The energy for adjudicating symbol obtains described each received according to the energy of the noise energy and each hard decision symbol
Confidence level of the corresponding signal-to-noise ratio of symbol as each received symbol is big by confidence level in the multiple received symbol
In confidence level thresholding at least one symbol as at least one aiming symbol.
In conjunction with the possible implementation of the first of fourth aspect or fourth aspect, second in fourth aspect is possible
In implementation, the receiving device further include: correction verification module is used for after the decoding module decoding success, described
Before sending module sends the confirmation message, cyclic redundancy check is carried out to the symbol that at least one described aiming symbol decodes out
CRC；
The sending module is specifically used for after CRC check success, sends the confirmation message to the transmitting terminal.
Second in conjunction with the possible implementation of the first of fourth aspect or fourth aspect or fourth aspect is possible
Implementation, in the third possible implementation of the fourth aspect, the acquisition module are specifically used for calculating the multiple
The confidence level of received symbol obtains the E symbol that confidence level is greater than confidence level thresholding from the multiple received symbol, from
Select the maximum M symbol of confidence level as at least one described aiming symbol in the E symbol；Wherein, T < M < E < N, T are
The number of the source symbol, N is the number of the multiple received symbol, and T, M, E and N are natural number.
The embodiment of the present invention provides a kind of data transmission method for uplink, method of reseptance and equipment, draws to data block to be sent
Point, multiple source symbols are obtained, Fountain coding carried out to multiple source symbols, symbol after exporting multiple codings and to receiving end
Symbol after sending the multiple coding stops carrying out Fountain to source symbol when receiving the confirmation message of receiving end return
Coding, wherein the determination information has been successfully received data block to be sent for identifying receiving end.Due to being compiled using Fountain
Yard, the symbol after the coding of output is mutually indepedent, and importance is all the same, does not need pointedly to repeat more certain specific bits
Repeatedly.Transmitting terminal stops output after the confirmation message for receiving receiving end transmission and sends the symbol after coding, no longer needs to pair
Data duplication after coding is sent, and is conducive to improve communication efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow chart of data transmission method for uplink provided in an embodiment of the present invention；
Fig. 2 is the flow chart of another data transmission method for uplink provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of data receiver method provided in an embodiment of the present invention；
Fig. 4 is the flow chart of another data receiver method provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of sending ending equipment provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another sending ending equipment provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of receiving device provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another receiving device provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is a kind of flow chart of data transmission method for uplink provided in an embodiment of the present invention.As shown in Figure 1, the present embodiment
Method includes:
Step 101 divides data block to be sent, obtains multiple source symbols.
Step 102 carries out fountain codes (Fountain) coding to multiple source symbols, symbol after exporting multiple codings and to
Receiving end sends the symbol after the multiple coding, stops spraying source symbol when receiving the confirmation message of receiving end return
Spring code (Fountain) coding, the confirmation message are successfully received the data to be sent for identifying the receiving end
Block.
It before step 101 include: to add cyclic redundancy check for original data block in an optional embodiment
(Cyclical Redundancy Check, referred to as CRC) code obtains the data block to be sent.Optionally, in step 101
Data block to be sent be also possible to be not added with the original data block of CRC code.
By taking data block to be sent is to be added to the data block of CRC code as an example, it is assumed that original data block is K bit, with addition
CRC code be R bit for, then the CRC code of the original data block of K bit addition R bit is obtained (K+R) bit by transmitting terminal
Data block to be sent.Then, transmitting terminal divides data block to be sent, obtains multiple source symbols, to obtain T source symbol
For number.Optionally, transmitting terminal can carry out equal part to data block to be sent, obtain the identical multiple source symbols of size.For example,
Transmitting terminal can according to the quantity for the transfer resource being assigned within the unit time, to the data block to be sent of (K+R) bit into
Row equal part obtains T source symbol.Unit time in each embodiment of the present invention can be a subframe or other times list
Position, the present embodiment are not construed as limiting this.The transfer resource is primarily referred to as certain running time-frequency resource, such as Physical Resource Block, in list
The transfer resource being assigned in the time of position is primarily referred to as one or more Physical Resource Block (Physical in a subframe
Resource Block, referred to as PRB).Wherein, transmitting terminal is according to the quantity of the transfer resource being assigned within the unit time,
Equal part is carried out to the data block to be sent of (K+R) bit, division mode used by T source symbol is obtained and is not specifically limited,
But it requires the symbol after the one and same coding for carrying out source symbol Fountain coding output being divided in some transmission as far as possible
In resource, in order to transmit.Based on this, a kind of division mode includes: transmitting terminal according to the transmission being assigned within the unit time
The quantity of resource determines the bit number that each symbol includes, and the bit number for then including according to each symbol determined is treated
It sends data block to be divided, to obtain the identical T source symbol of size.It illustrates, it is assumed that transmitting terminal is in the unit time
The transfer resource being inside assigned to is 4 PRB, and assumes that guarantee that each symbol is larger is properly received probability, needs to each symbol
, then it can determine corresponding 8 bits of each transmitted per unit time resource numbers repetition transmission for 100 times, if on transfer resource, often
One symbol of secondary (in i.e. each unit time) transmission, then a symbol needs to include 8 bits, can be with to be sent based on this
The total bit number (K+R) that data block includes obtains the number of source symbol and can obtain the source symbol marked off divided by 8 bits
Number.When (K+R)/8 is aliquant, (Padding) Ceil [(K+R)/8] * 8- (K+R) a bit is filled on (K+R) bit.
Wherein, Ceil is the function to round up.
After obtaining T source symbol, transmitting terminal carries out Fountain coding to T source symbol, the symbol after generating coding
X0, X1 ... etc..Wherein, the symbol after the coding is made of one or more bits, for example, 64QAM a symbol just
It is made of 6 bits.Briefly, Fountain coding can export the symbol after infinite multiple codings, the symbol after each coding
All be by certain a few input source symbol mould 2 plus is formed, any two export coding after symbol be completely independent it is uncorrelated
's.
After symbol after exports coding, the symbol after the coding is mapped on transfer resource, is then sent out to receiving end
It send.In general, each (in i.e. each unit time) sends one to receiving end on the transfer resource being assigned within the unit time
Symbol after the coding.By taking LTE system as an example, it is assumed that transfer resource unit is 4 PRB in a subframe, totally 400
A available resource elements (Resource Element, referred to as RE), with quadrature phase shift keying (Quadrature Phase
Shift Keying, referred to as QPSK) modulation, then 400*2=800 bit can be transmitted altogether, 8 ratios of a symbol when mapping
Extra heavy multiple 800/8=100 time, then the bit map after repetition to a transfer resource unit, i.e. 4 in a subframe
PRB, on totally 400 RE.
Since the Fountain coding of transmitting terminal can only be received with the symbol after the generation coding of indefinite length, transmitting terminal
After the confirmation message (Ack) of receiving end feedback, just stop carrying out Fountain coding to source symbol, also means that stopping output
Symbol and stopping after coding send the symbol after the coding.Wherein, the confirmation message that transmitting terminal is sent is received for identifying
End is successfully received the data block to be sent, and for a data block to be sent, i.e., (K+R) each confirmation message is
It is right that the data block to be sent of bit, i.e. receiving end only have (K+R) bit of monolith data all to receive, and can just feed back a confirmation letter
Breath, and do not need to feed back which symbol is not properly received, and reduces the data volume of feedback.
The transmission process of transmitting terminal for ease of understanding, Fig. 2 separately provide a kind of flow diagram of transmitting terminal transmission data.
For receiving end, the symbol of transmitting terminal transmission can be received, and using corresponding with Fountain coding method
Fountain interpretation method decodes the symbol received, until being successfully received data block to be sent.About connecing
The treatment process of receiving end can be found in the description of following example.
In the present embodiment, transmitting terminal is matched with receiving end, is divided to data block to be sent, and multiple source symbols are obtained
Number, Fountain coding is carried out to multiple source symbols, the symbol after exporting multiple codings simultaneously sends the multiple volume to receiving end
Symbol after code stops carrying out Fountain coding to source symbol when receiving the confirmation message of receiving end return, wherein this is really
Determine information and is successfully received data block to be sent for identifying receiving end.Due to being encoded using Fountain, the coding of output
Symbol afterwards is mutually indepedent, and importance is all the same, does not need pointedly to repeat more times certain specific bits.Transmitting terminal exists
Stop output after receiving the confirmation message of receiving end transmission and send the symbol after coding, no longer needs to the data weight after coding
Recurrence is sent, and is conducive to improve communication efficiency.
Fig. 3 is a kind of flow chart of data receiver method provided in an embodiment of the present invention.As shown in figure 3, the present embodiment
Method includes:
Step 301, reception reach the multiple of receiving end by transmission by the symbol after multiple codings of transmitting terminal and connect
The symbol of receipts, wherein the symbol after the multiple coding is that transmitting terminal sprays the source symbol that data block to be sent marks off
Spring code (Fountain) coding obtains.
Step 302, the confidence level for calculating the multiple received symbol.
Step 303, using confidence level in the multiple received symbol be greater than confidence level thresholding at least one symbol as
At least one aiming symbol.
Step 304 carries out fountain codes (Fountain) decoding at least one described aiming symbol, and in decoding success
Afterwards, to the transmitting terminal send confirmation message, the confirmation message for identify receiving end be successfully received it is described to be sent
Data block.
In the present embodiment, transmitting terminal divides data block to be sent, multiple source symbols is obtained, later to multiple sources
Symbol carries out Fountain coding, symbol after exporting multiple codings and the symbol after sending the multiple coding to receiving end.
The process of symbol after sending multiple codings to receiving end about transmitting terminal can be found in the description of embodiment illustrated in fig. 1.Due to letter
There can be noise in road transmission process, so the symbol that receiving end receives includes the symbol and letter after the coding that transmitting terminal is sent
Noise in road transmission process.
Receiving end receives the multiple receptions for reaching receiving end by transmission by the symbol after multiple codings of transmitting terminal
Symbol, calculate the confidence level of the multiple symbol received later.It is a kind of to calculate the credible of the multiple received symbol
The mode of degree includes: to carry out hard decision to each received symbol after receiving end receives symbol, obtains each hard decision letter
Number, which is actually that the symbol after coding transmitted by transmitting terminal is thought in receiving end；Later, receiving end is according to every
The amplitude of the amplitude of a received signal and each hard decision signal calculates noise energy, specifically by each received symbol
Amplitude and each hard decision symbol amplitude difference as noise amplitude, then by noise amplitude carry out square operation obtain
Noise energy；And the energy of each hard decision symbol is calculated according to the amplitude of each hard decision symbol, specifically, sentencing each firmly
Certainly the amplitude of symbol carries out square operation and obtains the energy of each hard decision symbol；Then according to the energy of each hard decision symbol
With noise energy, the corresponding signal-to-noise ratio of each received symbol is obtained, by the corresponding noise of each received symbol obtained
Than the confidence level as each received symbol.Wherein, signal-to-noise ratio is bigger, then it is assumed that confidence level is higher.Such as: assuming that received
The amplitude of symbol is 1.4, and the amplitude of hard decision symbol is 1, then signal energy is 1, noise energy is (1.4-1) * (1.4-1)
=0.16, signal-to-noise ratio is exactly 1/0.16.
After the confidence level for calculating each received symbol, according to the confidence level of each received symbol, from described more
Confidence level is obtained in a received symbol is greater than at least one symbol of confidence level thresholding as at least one aiming symbol.It is a kind of
The embodiment for obtaining aiming symbol includes: the E for obtaining confidence level from the multiple received symbol and being greater than confidence level thresholding
A symbol selects the maximum M symbol of confidence level as at least one described aiming symbol from E symbol.Wherein, T < M < E <
N, T are the number of above-mentioned source symbol, and N is the number of the multiple received symbol, and T, M, E and N are natural number.Specific
In realization, receiving end can receive symbol with side, and side carries out aforesaid operations, as soon as specifically, every reception symbol, calculates the symbol
Confidence level, and judge whether the received total number of symbols of institute is greater than or equal to N, if the received symbol of institute is greater than or equal to N,
Confidence level is selected to be greater than E symbol of confidence level thresholding from N number of symbol, if choosing E symbol from N number of symbol,
The maximum M symbol of confidence level is selected from the E symbol, using the M symbol as institute if choosing M symbol
State at least one aiming symbol；If the received symbol of institute is less than N, or if not selecting E symbol from N number of symbol,
Or M symbol is not selected from E symbol, then continue to next symbol.
After obtaining at least one described aiming symbol, Fountain decoding is carried out at least one aiming symbol.
Fountain decoding is substantially to solve a matrix equation, when receiving end finds that the corresponding matrix of at least one aiming symbol is discontented
When order, it is considered as Fountain decoding failure, it is on the contrary, it is believed that Fountain is successfully decoded.
Optionally, if the data block that transmitting terminal is sent is original data block, i.e., without carrying out the processing such as CRC code addition,
Then after Fountain is successfully decoded, receiving end can send confirmation message to transmitting terminal, so that transmitting terminal knows receiving end
Through the data block for being successfully received transmitting terminal transmission.
Optionally, if the data block not instead of original data block that transmitting terminal is sent, after the processing such as addition CRC code
Data block, then after Fountain is successfully decoded, receiving end continue the symbol that at least one aiming symbol is decoded out progress
CRC check；If CRC check success, it is determined that be successfully received the data block (number that transmitting terminal is sent here of transmitting terminal transmission
According to the data block to be sent of block, that is, above-mentioned), confirmation message is sent to transmitting terminal, so that transmitting terminal knows that receiving end successfully connects
Receive the data block transmitted by it.
Transmitting terminal can just stop carrying out Fountain to source symbol only after the confirmation message for receiving receiving end feedback
Coding, i.e. symbol after stopping exports coding simultaneously stop sending the symbol after the coding to receiving end.
For receiving end, a kind of process for realizing above-mentioned steps 301- step 304 is as shown in Figure 4, comprising:
Number N=0 for the symbol that step 401, receiving end initialization receive, and confidence level is initialized greater than confidence level thresholding
Symbol numbers E=0.
Step 402, receiving end receive the noise-containing symbol that transmitting terminal is sent, and calculate the confidence level of each symbol,
And turn to go to execute step 403.
Whether the confidence level for the symbol that step 403, receiving end judgement are currently received is greater than confidence level thresholding；If it is determined that
It as a result is yes, execution step 404；If it is judged that being no, execution step 405.
The symbol that step 404, receiving end label are currently received is effective, and confidence level is greater than to the symbol of confidence level thresholding
Number number E add 1, and execute step 406.
The symbol that step 405, receiving end label are currently received is invalid, and executes step 406.
Step 406, receiving end judge whether current credibility is greater than M greater than the number E of the symbol of confidence level thresholding；If
Judging result is yes, execution step 407；If it is judged that be it is no, return to step 402.
Step 407, receiving end are to select the maximum M symbol of confidence level, and execute in symbol from E label
Step 408.
Step 408, receiving end carry out Fountain decoding to the M symbol selected, and judge whether decoding succeeds；If
Judging result is yes, execution step 409；If it is judged that be it is no, return to step 402.
Step 409, receiving end carry out CRC check to decoding result, and judge whether CRC check succeeds；If it is determined that knot
Fruit is yes, execution step 410；If it is judged that be it is no, return to step 402.
Step 410, receiving end terminate connecing for notebook data block transmitted by transmitting terminal to transmitting terminal feedback acknowledgment information
It receives.
In the present embodiment, receiving end is matched with transmitting terminal, to transmitting terminal carry out Fountain coding after symbol into
Row Fountain decoding, if it is successfully decoded, and CRC check success, then confirmation message is sent to transmitting terminal, so that transmitting terminal stops
The only coding of the data block and transmission.Since the symbol after the coding of Fountain coding output is mutually indepedent, importance is homogeneous
Together, it does not need pointedly to repeat more times certain specific bits, because being not properly received without feeding back which symbol,
Reduce the data volume of feedback.Receiving end feedback acknowledgment information after being successfully received entire data block enable transmitting terminal and
When stop exports coding after symbol and stop send coding after symbol, no longer need to after coding Data duplication send, have
Conducive to raising communication efficiency.
Fig. 5 is a kind of structural schematic diagram of sending ending equipment provided in an embodiment of the present invention.As shown in figure 5, the transmission
End equipment includes: division module 51, coding module 52, sending module 53 and receiving module 54.
Division module 51 obtains multiple source symbols for dividing to data block to be sent.
Coding module 52 is connect with division module 51, for spraying to multiple source symbols that division module 51 marks off
Spring code (Fountain) coding, the symbol after exporting multiple codings stop when receiving the confirmation message of receiving end return to institute
State source symbol carry out Fountain coding, the confirmation message for identify the receiving end be successfully received it is described to be sent
Data block.
Sending module 53 is connect with coding module 52, for sending the multiple of the output of coding module 52 to receiving end
Symbol after coding.
Receiving module 54 is connect with coding module 52, the confirmation message returned for receiving the receiving end, and to
Coding module 52 provides the confirmation message.
In an optional embodiment, sending module 53 is particularly used in the transfer resource being assigned within the unit time
On, the symbol after sending a coding to the receiving end every time.
In an optional embodiment, as shown in figure 5, the sending ending equipment further include: adding module 55.Adding module
55, it is connect with division module 51, for before division module 51 divides the data block to be sent, being initial data
Block adds CRC code, obtains the data block to be sent.Adding module 55 provides the data block to be sent to division module 51.
In an optional embodiment, division module 51, which is particularly used in, carries out equal part to the data block to be sent, obtains
Obtain the identical the multiple source symbol of size.
Each functional module of sending ending equipment provided in this embodiment can be used for executing embodiment of the method shown in Fig. 1 or Fig. 2
Process, concrete operating principle repeats no more, and is detailed in the description of embodiment of the method.
Sending ending equipment provided in this embodiment, matches with receiving end, divides to data block to be sent, obtains more
A source symbol carries out Fountain coding to multiple source symbols, symbol after exporting multiple codings and described in sending to receiving end
Symbol after multiple codings stops carrying out Fountain coding to source symbol when receiving the confirmation message of receiving end return,
In, which has been successfully received data block to be sent for identifying receiving end.Due to being encoded using Fountain, output
Coding after symbol it is mutually indepedent, importance is all the same, do not need pointedly to certain specific bits repeat more times.This
The sending ending equipment that embodiment provides stops output after the confirmation message for receiving receiving end transmission and sends the symbol after coding
Number, it no longer needs to send the Data duplication after coding, is conducive to improve communication efficiency.
Fig. 6 is the structural schematic diagram of another sending ending equipment provided in an embodiment of the present invention.As shown in fig. 6, the present embodiment
Sending ending equipment include: memory 61, processor 62 and communication interface 63.
Memory 61, for storing program.Specifically, program may include program code, said program code includes meter
Calculation machine operational order.Memory 61 may include high speed RAM memory, can also further include nonvolatile memory (non-
Volatile memory), a for example, at least magnetic disk storage.
Processor 62, for executing the program of the storage of memory 61, to be used for: dividing, obtain to data block to be sent
Multiple source symbols are obtained, fountain codes (Fountain) coding is carried out to the multiple source symbol, the symbol after exporting multiple codings,
Communication interface 63 stops carrying out Fountain coding, the confirmation to the source symbol when receiving the confirmation message of receiving end return
Information is successfully received the data block to be sent for identifying the receiving end.
Processor 62 can be a central processing unit (Central Processing Unit, referred to as CPU), or
It is specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or is matched
It is set to the one or more integrated circuits for implementing the embodiment of the present invention.
Communication interface 63, the symbol after the multiple coding for sending the output of processor 62 to receiving end, Yi Jijie
The confirmation message that the receiving end returns is received, and provides the confirmation message to processor 62.
In an optional embodiment, communication interface 63 is particularly used in the transfer resource being assigned within the unit time
On, the symbol after sending a coding to the receiving end every time.
In an optional embodiment, processor 62 is also used to before dividing to the data block to be sent, is
Original data block adds CRC code, obtains the data block to be sent.
In an optional embodiment, processor 62 is used to divide data block to be sent, obtains multiple source symbols,
Include: that processor 62 is particularly used in the data block progress equal part to be sent, obtains the identical the multiple source symbol of size
Number.
Illustrate herein, the sending ending equipment of the present embodiment in addition to include memory 61, processor 62 and communication interface 63 it
Outside, it is also possible to including power module 64, radio-frequency module 65, display 66 and input equipment 67 etc..Wherein, input equipment can be
Touch panel, perhaps can be mouse or can be keyboard etc..
Optionally, in specific implementation, if memory 61, processor 62, communication interface 63, power module 64, radio frequency
Module 65, display 66 and input equipment 67 are independent to be realized, then memory 61, processor 62, communication interface 63, power module
64, radio-frequency module 65, display 66 and input equipment 67 can be connected with each other by bus and complete mutual communication.It is described
Bus can be industry standard architecture (Industry Standard Architecture, referred to as ISA) bus, outside
Apparatus interconnection (Peripheral Component, referred to as PCI) bus or extended industry-standard architecture (Extended
Industry Standard Architecture, referred to as EISA) bus etc..The bus can be divided into address bus, number
According to bus, control bus etc..Only to be indicated with a thick line in Fig. 6, it is not intended that an only bus or one convenient for indicating
The bus of seed type.
Optionally, in specific implementation, if memory 61, processor 62, communication interface 63, power module 64, radio frequency
Module 65, display 66 and input equipment 67 are integrated to be realized on one chip, then memory 61, processor 62, communication interface
63, power module 64, radio-frequency module 65, display 66 and input equipment 67 can be completed by internal interface it is identical between it is logical
Letter.
Sending ending equipment provided in this embodiment can be used for executing the process of embodiment of the method shown in Fig. 1 or Fig. 2, specific
Working principle repeats no more, and is detailed in the description of embodiment of the method.
Sending ending equipment provided in this embodiment, matches with receiving end, divides to data block to be sent, obtains more
A source symbol carries out Fountain coding to multiple source symbols, symbol after exporting multiple codings and described in sending to receiving end
Symbol after multiple codings stops carrying out Fountain coding to source symbol when receiving the confirmation message of receiving end return,
In, which has been successfully received data block to be sent for identifying receiving end.Due to being encoded using Fountain, output
Coding after symbol it is mutually indepedent, importance is all the same, do not need pointedly to certain characteristic bits repeat more times.This
The sending ending equipment that embodiment provides stops output after the confirmation message for receiving receiving end transmission and sends the symbol after coding
Number, it no longer needs to send the Data duplication after coding, is conducive to improve communication efficiency.
Fig. 7 is a kind of structural schematic diagram of receiving device provided in an embodiment of the present invention.As shown in fig. 7, the present embodiment
Receiving device include: receiving module 71, obtain module 72, decoding module 73 and sending module 74.
Receiving module 71 reaches receiving end by transmission for receiving the symbol after multiple codings by transmitting terminal
Multiple received symbols, wherein the symbol after the multiple coding is the source symbol that transmitting terminal marks off data block to be sent
Carry out what fountain codes (Fountain) coding obtained.Due to that can have noise during transmission, so receiving device connects
The symbol received include transmitting terminal send coding after symbol and transmission during noise.
Module 72 is obtained, is connect with receiving module 71, it, will be described for calculating the confidence level of the multiple received symbol
Confidence level is greater than at least one symbol of confidence level thresholding as at least one aiming symbol in multiple received symbols.
Decoding module 73, with obtain module 72 connect, for obtain module 72 acquisition at least one aiming symbol into
Row Fountain decoding.
Sending module 74 is connect with decoding module 73, for being sent out after 73 decoding success of decoding module to the transmitting terminal
Confirmation message is sent, the confirmation message is successfully received the data block to be sent for identifying the receiving device.
In an optional embodiment, obtains module 72 and be particularly used in each received symbol progress hard decision, obtain
Each hard decision symbol is obtained, noise energy is calculated according to the amplitude of each received symbol and the amplitude of each hard decision symbol
It measures, and calculates the energy of each hard decision symbol according to the amplitude of each hard decision symbol, according to the noise energy
The energy of amount and each hard decision symbol obtains the corresponding signal-to-noise ratio of each received symbol as each received symbol
Confidence level, using confidence level in multiple received symbols be greater than confidence level thresholding at least one symbol as at least one target
Symbol.
In an optional embodiment, as shown in fig. 7, the receiving device further include: correction verification module 75.Correction verification module
75, it is connect with decoding module 73, for sending the confirmation message in sending module 74 after 73 decoding success of decoding module
Before, CRC check is carried out to the symbol that at least one described aiming symbol decodes out.Based on this, sending module 74 is gone back and calibration mode
Block 75 connects, and is specifically used for after correction verification module 75 verifies successfully, sends the confirmation message to the transmitting terminal.
In an optional embodiment, obtains module 72 and is specifically used for calculating the confidence level of the multiple received symbol,
The E symbol that confidence level is greater than confidence level thresholding is obtained from the multiple received symbol, selection can from the E symbol
The maximum M symbol of reliability is as at least one described aiming symbol；Wherein, T < M < E < N, T are the number of the source symbol, N
For the number of the multiple received symbol, and T, M, E and N are natural number.
Each functional module of receiving device provided in this embodiment can be used for executing embodiment of the method shown in Fig. 3 or Fig. 4
Process, concrete operating principle repeats no more, and is detailed in the description of embodiment of the method.
Receiving device provided in this embodiment, matches with transmitting terminal, after carrying out Fountain coding to transmitting terminal
Symbol carries out Fountain decoding, if being successfully received the data block of transmitting terminal transmission, sends confirmation message to transmitting terminal, with
Transmitting terminal is set to stop coding and the transmission of the data block.Since the symbol after the coding of Fountain coding output is mutually indepedent,
Importance is all the same, does not need pointedly to repeat more times, because not having without feeding back which symbol certain specific bits
It is properly received, reduces the data volume of feedback.In addition, the receiving device of the present embodiment is being successfully received entire data block
Symbol after feedback acknowledgment information enables transmitting terminal to stop exports coding in time later simultaneously stops sending the symbol after coding, nothing
The Data duplication after coding need to be sent again, be conducive to improve communication efficiency.
Fig. 8 is the structural schematic diagram of another receiving device provided in an embodiment of the present invention.As shown in figure 8, described connect
Receiving end equipment includes: communication interface 81, memory 82, processor 83 and decoder 84.
Communication interface 81 reaches receiving end by transmission for receiving the symbol after multiple codings by transmitting terminal
Multiple received symbols, wherein the symbol after the multiple coding is the source symbol that transmitting terminal marks off data block to be sent
Carry out what fountain codes (Fountain) coding obtained；And for sending and confirming to transmitting terminal after 84 decoding success of decoder
Information, the confirmation message are successfully received the data block to be sent for identifying the receiving device.Due to channel
Can have noise in transmission process, thus the symbol that receiving device receives include transmitting terminal send coding after symbol and
Noise during transmission.
Memory 82, for storing program.Specifically, program may include program code, and said program code includes meter
Calculation machine operational order.Memory 82 may include high speed RAM memory, can also further include nonvolatile memory (non-
Volatile memory), a for example, at least magnetic disk storage.
Processor 83, for executing the program of the storage of memory 82, to be used for: calculate the multiple received symbol can
Confidence level in the multiple received symbol is greater than at least one symbol of confidence level thresholding as at least one target by reliability
Symbol.
Decoder 84, at least one aiming symbol for obtaining to processor 83 carry out Fountain decoding.
In an optional embodiment, processor 83, which is particularly used in, carries out hard decision to each received symbol, obtains
Each hard decision symbol calculates noise energy according to the amplitude of each received symbol and the amplitude of each hard decision symbol
It measures, and calculates the energy of each hard decision symbol according to the amplitude of each hard decision symbol, according to the noise energy
The energy of amount and each hard decision symbol obtains the corresponding signal-to-noise ratio of each received symbol as each received symbol
Confidence level, using confidence level in multiple received symbols be greater than confidence level thresholding at least one symbol as at least one target
Symbol.
In an optional embodiment, processor 83 is also used to after 84 decoding success of decoder, is sent out in communication interface 81
Before sending the confirmation message, the symbol decoded out at least one described aiming symbol carries out CRC check, and to communication interface 81
It provides and verifies successful result.
Correspondingly, communication interface 81 is particularly used in after processor 83 verifies successfully, the confirmation is sent to transmitting terminal
Information.
In an optional embodiment, processor 83 is particularly used in the confidence level for calculating the multiple received symbol,
The E symbol that confidence level is greater than confidence level thresholding is obtained from the multiple received symbol, selection can from the E symbol
The maximum M symbol of reliability is as at least one described aiming symbol；Wherein, T < M < E < N, T are the number of the source symbol, N
For the number of the multiple received symbol, and T, M, E and N are natural number.
Illustrate herein, the receiving device is in addition to including communication interface 81, memory 82, processor 83 and decoder 84
Except, it is also possible to including power module 85, radio-frequency module 86, display 87 and input equipment 88 etc..Wherein, input equipment can be with
It is touch panel, perhaps can be mouse or can be keyboard etc..
Optionally, in specific implementation, if communication interface 81, memory 82, processor 83, decoder 84, power supply mould
Block 85, radio-frequency module 86, display 87 and input equipment 88 are independent to be realized, then communication interface 81, memory 82, processor 83,
Decoder 84, power module 85, radio-frequency module 86, display 87 and input equipment 88 can be connected with each other and be completed by bus
Mutual communication.The bus can be isa bus, pci bus or eisa bus etc..It is total that the bus can be divided into address
Line, data/address bus, control bus etc..Only to be indicated with a thick line in Fig. 8 convenient for indicating, it is not intended that only one total
Line or a type of bus.
Optionally, in specific implementation, if communication interface 81, memory 82, processor 83, decoder 84, power supply mould
Block 85, radio-frequency module 86, display 87 and input equipment 88 are integrated to be realized on one chip, then communication interface 81, memory
82, processor 83, decoder 84, power module 85, radio-frequency module 86, display 87 and input equipment 88 can be connect by inside
Mouth completes identical communication.
Receiving device provided in this embodiment can be used for executing the process of embodiment of the method shown in Fig. 3 or Fig. 4, specific
Working principle repeats no more, and is detailed in the description of embodiment of the method.
Receiving device provided in this embodiment, matches with transmitting terminal, after carrying out Fountain coding to transmitting terminal
Symbol carries out Fountain decoding, if being successfully received the data block of transmitting terminal transmission, sends confirmation message to transmitting terminal, with
Transmitting terminal is set to stop coding and the transmission of the data block.Since the symbol after the coding of Fountain coding output is mutually indepedent,
Importance is all the same, does not need pointedly to repeat more times, because not having without feeding back which symbol certain specific bits
It is properly received, reduces the data volume of feedback.In addition, the receiving device of the present embodiment is being successfully received entire data block
Symbol after feedback acknowledgment information enables transmitting terminal to stop exports coding in time later simultaneously stops sending the symbol after coding, nothing
The Data duplication after coding need to be sent again, be conducive to improve communication efficiency.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (14)
1. a kind of data transmission method for uplink characterized by comprising
Data block to be sent is divided, multiple source symbols are obtained；
Fountain codes Fountain coding is carried out to the multiple source symbol, the symbol after exporting multiple codings is simultaneously sent to receiving end
Symbol after the multiple coding stops carrying out the source symbol when receiving the confirmation message that the receiving end returns
Fountain coding, the confirmation message are successfully received the data block to be sent for identifying the receiving end；
Wherein, described that data block to be sent is divided, obtain multiple source symbols, comprising:
According to the quantity for the transfer resource being assigned in the unit time, the bit number that each source symbol includes is determined；
According to the bit number that each source symbol determined includes, equal part is carried out to data block to be sent, it is identical to obtain size
The multiple source symbol.
2. data transmission method for uplink according to claim 1, which is characterized in that described to send the multiple coding to receiving end
Symbol afterwards, comprising:
Symbol on the transfer resource being assigned within the unit time, after sending a coding to the receiving end every time.
3. data transmission method for uplink according to claim 1 or 2, which is characterized in that described to be drawn to data block to be sent
Point, before obtaining multiple source symbols, further includes:
Cyclic redundancy check code is added for original data block, obtains the data block to be sent.
4. a kind of data receiver method characterized by comprising
The multiple received symbols for reaching receiving end by transmission by the symbol after multiple codings of transmitting terminal are received,
In, the symbol after the multiple coding is that the transmitting terminal carries out fountain codes to multiple source symbols that data block to be sent marks off
What Fountain was encoded；
Calculate the confidence level of the multiple received symbol；
Confidence level in the multiple received symbol is greater than at least one symbol of confidence level thresholding as at least one target
Symbol；
Fountain decoding is carried out at least one described aiming symbol, and after decoding success, is sent to the transmitting terminal true
Recognize information, the confirmation message is successfully received the data block to be sent for identifying the receiving end.
5. data receiver method according to claim 4, which is characterized in that calculate the credible of the multiple received symbol
Degree includes:
Hard decision is carried out to each received symbol, obtains each hard decision symbol；
According to the amplitude of each received symbol and the amplitude of each hard decision symbol calculating noise energy, and according to
The amplitude of each hard decision symbol calculates the energy of each hard decision symbol；
According to the energy of the noise energy and each hard decision symbol, the corresponding letter of each received symbol is obtained
It makes an uproar than the confidence level as each received symbol.
6. data receiver method according to claim 4, which is characterized in that after decoding success, sent out to the transmitting terminal
Send confirmation message, comprising:
Cyclic redundancy check (CRC) is carried out to the symbol that at least one aiming symbol decodes out；
If CRC check success sends the confirmation message to the transmitting terminal.
7. according to the described in any item data receiver methods of claim 4-6, which is characterized in that it is described will be the multiple received
Confidence level includes: as at least one aiming symbol greater than at least one symbol of confidence level thresholding in symbol
The E symbol that confidence level is greater than confidence level thresholding is obtained from the multiple received symbol；
Select the maximum M symbol of confidence level as at least one described aiming symbol from the E symbol；Wherein, T < M < E
< N, T are the number of the multiple source symbol, and N is the number of the multiple received symbol, and T, M, E and N are natural number.
8. a kind of sending ending equipment characterized by comprising
Division module obtains multiple source symbols for dividing to data block to be sent；
Coding module, for carrying out fountain codes Fountain coding to the multiple source symbol, the symbol after exporting multiple codings,
Stop carrying out Fountain coding to the source symbol when receiving the confirmation message of receiving end return, the confirmation message is used for
It identifies the receiving end and is successfully received the data block to be sent；
Sending module, the symbol after the multiple coding for sending the coding module output to the receiving end；
Receiving module, the confirmation message returned for receiving the receiving end；
Wherein, the division module determines each source specifically for the quantity according to the transfer resource being assigned in the unit time
The bit number that symbol includes；And the bit number for according to each source symbol determined including, equal part is carried out to data block to be sent,
Obtain the identical the multiple source symbol of size.
9. sending ending equipment according to claim 8, which is characterized in that the sending module was specifically used in the unit time
Symbol on the transfer resource being inside assigned to, after sending a coding to the receiving end every time.
10. sending ending equipment according to claim 8 or claim 9, which is characterized in that further include:
Adding module, for adding before the division module divides the data block to be sent for original data block
Add cyclic redundancy check code, obtains the data block to be sent.
11. a kind of receiving device characterized by comprising
Receiving module reaches the multiple of receiving end by transmission for receiving the symbol after multiple codings by transmitting terminal and connects
The symbol of receipts, wherein the symbol after the multiple coding is that the transmitting terminal accords with multiple sources that data block to be sent marks off
Number carrying out fountain codes Fountain encodes；
Module is obtained, for calculating the confidence level of the multiple received symbol, by confidence level in the multiple received symbol
Greater than confidence level thresholding at least one symbol as at least one aiming symbol；
Decoding module, for carrying out Fountain decoding at least one described aiming symbol；
Sending module, for sending confirmation message to the transmitting terminal, the confirmation message is used after decoding module decoding success
The data block to be sent is successfully received in identifying the receiving device.
12. receiving device according to claim 11, which is characterized in that the acquisition module is specifically used for connecing to each
The symbols of receipts carries out hard decision, obtains each hard decision symbol, described each sentences according to the amplitude of each received symbol and firmly
Certainly the amplitude of symbol calculates noise energy, and calculates each hard decision symbol according to the amplitude of each hard decision symbol
Energy it is corresponding to be obtained according to the energy of the noise energy and each hard decision symbol for each received symbol
Confidence level of the signal-to-noise ratio as each received symbol, confidence level in the multiple received symbol is greater than confidence level
At least one symbol of thresholding is as at least one aiming symbol.
13. receiving device according to claim 11, which is characterized in that further include:
Correction verification module is used for after the decoding module decoding success, right before the sending module sends the confirmation message
The symbol that at least one described aiming symbol decodes out carries out cyclic redundancy check (CRC)；
The sending module is specifically used for after CRC check success, sends the confirmation message to the transmitting terminal.
14. the described in any item receiving devices of 1-13 according to claim 1, which is characterized in that the acquisition module is specifically used
In the confidence level for calculating the multiple received symbol, confidence level is obtained from the multiple received symbol and is greater than confidence level door
E symbol of limit selects the maximum M symbol of confidence level as at least one described aiming symbol from the E symbol；Its
In, T < M < E < N, T are the number of the source symbol, and N is the number of the multiple received symbol, and T, M, E and N are nature
Number.
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| US10412151B2 (en) | 2015-01-26 | 2019-09-10 | Huawei Technologies Co., Ltd. | Method and system for on-demand file repair |
| CN108141316A (en) | 2015-09-24 | 2018-06-08 | Idac控股公司 | For the system of the enhancing multiplexing in wireless system |
| WO2017193305A1 (en) | 2016-05-11 | 2017-11-16 | 华为技术有限公司 | Data transmission method, device and system |
| CN108023664B (en) * | 2016-10-28 | 2020-11-10 | 中国电信股份有限公司 | Interference coordination method and system, base station, user terminal and spectrum allocation device |
| CN108631933B (en) * | 2017-03-24 | 2021-05-18 | 华为技术有限公司 | Data transmission method and device |
| CN107257244A (en) * | 2017-05-18 | 2017-10-17 | 中国矿业大学 | A kind of fountain code encoding method based under broadcast environment |
| CN110603792B (en) * | 2017-05-23 | 2023-02-03 | 华为技术有限公司 | Data transmission method, equipment and system |
| CN109644066B (en) | 2017-08-04 | 2021-08-27 | 上海朗帛通信技术有限公司 | Method and equipment used in user and base station of wireless communication |
| CN110138451B (en) | 2018-02-08 | 2020-12-04 | 华为技术有限公司 | Method and communication device for wireless optical communication |
| US20230344547A1 (en) * | 2020-03-24 | 2023-10-26 | Kangqi LIU | Techniques for providing an adaptive coding rate in wireless communications |
| CN114598580B (en) * | 2020-12-03 | 2023-05-23 | 中国科学院上海高等研究院 | Wireless hierarchical wide area coverage transmitting/receiving method, system, transmitting terminal and receiving terminal |
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