CN107666372A - It is a kind of based on multilink collaborative transmission method and device without rate coding - Google Patents
It is a kind of based on multilink collaborative transmission method and device without rate coding Download PDFInfo
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- CN107666372A CN107666372A CN201710832661.4A CN201710832661A CN107666372A CN 107666372 A CN107666372 A CN 107666372A CN 201710832661 A CN201710832661 A CN 201710832661A CN 107666372 A CN107666372 A CN 107666372A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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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
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
Abstract
The embodiments of the invention provide a kind of based on multilink collaborative transmission method and device without rate coding, applied to transmitting terminal, methods described includes：When meeting that data send condition, all packets that acquisition buffer area has preserved are as data to be sent；Wherein, the data send condition and included：The quantity for all packets that buffer area has preserved reaches pre-arranged code threshold value, or reaches preset time threshold apart from the time interval of last time transmission data；According to default length value, the data to be sent are constructed as at least one data block；The quantity of data block to be sent every time is determined successively, the data block of respective amount is selected to carry out digital fountain code coding in each data block, each target data block corresponding to obtaining, and select to distinguish corresponding each available channel with each target data block, pass through each target data block corresponding to each available channel transmission.Using the embodiment of the present invention, the reliability that data are sent can be improved.
Description
Technical field
The present invention relates to wireless communication technology field, is passed more particularly to a kind of cooperateed with based on the multilink without rate coding
Transmission method and device.
Background technology
Communication between wireless communication technology field, two communication nodes between the two communication nodes by establishing
What link was carried out.Under normal circumstances, there was only a channel between two nodes, but single link communications have lacking for finite capacity
Point.At present, a plurality of channel is generally established between communication node, is communicated using a plurality of channel.
Specifically, when communication node sends target data, target data is cut into multiple data blocks, such as can incite somebody to action
Target data is cut into 3 data blocks, and 3 data blocks after cutting then are respectively sent into different channels.Work as communication section
When point needs the quantity of the target data sent to be less than the quantity of channel, such as communication node A and communication node B carries out channel radio
Letter, and 4 available channels therebetween be present, if communication node A now needs target data being sent to communication node
The data of data block 1 can send to channel 1, send the data of data block 2 to channel 2 by B, communication node A, by data block
3 data are sent to channel 3.Each data block is sent data by communication node A by corresponding channel to communication node B.
In data transmission procedure, if be interfered for the channel 1 for sending data block, cause communication node B can not
Available data block 1 is received, communication node A will resend data block 1, if now channel 1 is still within being disturbed shape
State, then communication node B target data can not be gone out according to each data block decoding of reception.Therefore, there is number of targets in prior art
According to the not high technical problem of the reliability of transmission.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of based on multilink collaborative transmission method and dress without rate coding
Put, to realize the purpose for improving the reliability that data are sent.Concrete technical scheme is as follows：
To reach above-mentioned purpose, in a first aspect, the embodiments of the invention provide a kind of based on the multilink without rate coding
Collaborative transmission method, applied to transmitting terminal, methods described includes：
When meeting that data send condition, all packets that acquisition buffer area has preserved are as data to be sent；Wherein,
The data, which send condition, to be included：The quantity for all packets that buffer area has preserved reaches pre-arranged code threshold value, or apart from upper
The secondary time interval for sending data reaches preset time threshold；
According to default length value, the data to be sent are constructed as at least one data block；
The quantity of data block to be sent every time is determined successively, selects the data block of respective amount to carry out in each data block
Digital fountain code encodes, obtain corresponding to each target data block, and select to distinguish with each target data block and corresponding respectively may be used
With channel, pass through each target data block corresponding to each available channel transmission.
Optionally, described according to default length value, the data to be sent are constructed as at least one data block includes：
The data to be sent are constructed as equal length and it is the data block of default length value.
Optionally, it is described the data to be sent are constructed as at least one data block after, methods described also includes：
Determine the numbering of each data block；
The quantity for determining data block to be sent every time successively, the data block of respective amount is selected in each data block
Digital fountain code coding is carried out, obtains corresponding each target data block, and selection and each target data block are corresponding respectively
Each available channel, included by each target data block corresponding to each available channel transmission：
It is determined that the quantity of data block to be sent first, selects the data block of respective amount to carry out numeral in each data block
Fountain codes encode, and obtain corresponding each target data block, and select to distinguish corresponding each available letter with each target data block
Road, pass through each target data block corresponding to each available channel transmission；
Receive the feedback information that receiving terminal is sent；Wherein, it is successfully decoded to include the receiving terminal for the feedback information
Target data block numbering；
The target data number of blocks for determining to send next time according to the feedback information；And it is described in each data block to return to execution
It is middle selection respective amount data block carry out digital fountain code coding, obtain corresponding to each target data block, and select with it is described
Each available channel corresponding to each target data block difference, pass through the step of each target data block corresponding to each available channel transmission
Suddenly, until received feedback information includes the numbering of all target data blocks.
Optionally, the packet preserved in the buffer area is to be counted caused by each task that the transmitting terminal is being handled
According to bag.
Second aspect, should the embodiments of the invention provide a kind of based on the multilink collaborative transmission method without rate coding
For receiving terminal, methods described includes：
The target data block that receiving end/sending end is sent, wherein, the target data block is the transmitting terminal by number to be sent
After at least one data block is constructed as, to what is obtained after each data block progress digital fountain code coding；
When the quantity of the target data block received is more than default decoding threshold value, used using with the transmitting terminal
Coding method corresponding to interpretation method row decoding is entered to each target data block of reception, obtain corresponding data.
Optionally, methods described also includes：
The numbering of successfully decoded target data block is determined, and sends and feeds back to the transmission comprising the numbering
End.
Optionally, methods described also includes：
Judge whether that all target data blocks are successfully decoded；
If not, the step of returning to the target data block for performing the receiving end/sending end transmission.
The third aspect, should the embodiments of the invention provide a kind of based on the multilink cooperative transmission device without rate coding
For transmitting terminal, described device includes：
Acquisition module, it is used as and treats for all packets that when meeting that data send condition, acquisition buffer area has preserved
Send data；Wherein, the data send condition and included：The quantity for all packets that buffer area has preserved reaches pre-arranged code
Threshold value, or reach preset time threshold apart from the time interval of last time transmission data；
Module is set up, for according to default length value, the data to be sent to be constructed as at least one data block；
Sending module, for determining the quantity of data block to be sent every time successively, corresponding number is selected in each data block
The data block of amount carries out digital fountain code coding, obtains corresponding each target data block, and select and each target data block
Each available channel corresponding to respectively, pass through each target data block corresponding to each available channel transmission.
Optionally, the establishment module, specifically for the data to be sent are constructed as into equal length and are default
Length value data block.
Optionally, described device also includes：
Determining module, for determining the numbering of each data block；
The sending module, including：
Determination sub-module, for determining the quantity of data block to be sent first；
Sending submodule, for selecting the data block of respective amount to carry out digital fountain code coding in each data block, obtain
To corresponding each target data block, and select to distinguish corresponding each available channel with each target data block, by described each
Each target data block corresponding to available channel transmission；
Receiving submodule, for receiving the feedback information of receiving terminal transmission；Wherein, the feedback information includes described connect
The numbering of the successfully decoded target data block of receiving end；
Implementation sub-module, for the target data number of blocks for determining to send next time according to the feedback information；And trigger institute
Sending submodule is stated, until received feedback information includes the numbering of all target data blocks.
Optionally, the packet preserved in the buffer area is to be counted caused by each task that the transmitting terminal is being handled
According to bag.
Fourth aspect, should the embodiments of the invention provide a kind of based on the multilink cooperative transmission device without rate coding
For receiving terminal, described device includes：
Receiving module, the target data block sent for receiving end/sending end, wherein, the target data block is the transmission
After data to be sent are constructed as at least one data block by end, to what is obtained after each data block progress digital fountain code coding；
Decoding module, for when the quantity of the target data block received is more than default decoded number, using with
Interpretation method corresponding to the coding method that the transmitting terminal uses enters row decoding to each target data block of reception, obtains corresponding
Data.
Optionally, described device also includes：
Determining module, for determining the numbering of successfully decoded target data block, and send the feedback for including the numbering
Information gives the transmitting terminal.
Optionally, described device also includes：
Judge module, for judging whether that all target data blocks are successfully decoded；If not, trigger the reception mould
Block.
Using provided in an embodiment of the present invention a kind of based on multilink collaborative transmission method and device without rate coding, hair
After data to be sent are constructed as data block by sending end, digital fountain code coding can be carried out to the data block of respective numbers, obtained
Corresponding each target data block, make that there is correlation between each target data block, receiving terminal only needs to receive partial target
Data block can decode former data, relative to the reliability that in the prior art, can improve data transmission.Certainly, this is implemented
Any product or method of invention must be not necessarily required to reach all the above advantage simultaneously.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description only this hair
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of applied field based on the multilink collaborative transmission method without rate coding provided in an embodiment of the present invention
Scape schematic diagram；
Fig. 2 is that a kind of flow based on the multilink collaborative transmission method without rate coding provided in an embodiment of the present invention is shown
It is intended to；
Fig. 3 is the structured flowchart of transmitting terminal in the embodiment of the present invention；
Fig. 4 is another flow based on the multilink collaborative transmission method without rate coding provided in an embodiment of the present invention
Schematic diagram；
Fig. 5 is the structured flowchart of receiving terminal in the embodiment of the present invention；
Fig. 6 is that a kind of structure based on the multilink cooperative transmission device without rate coding provided in an embodiment of the present invention is shown
It is intended to；
Fig. 7 is another structure based on the multilink cooperative transmission device without rate coding provided in an embodiment of the present invention
Schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
To solve prior art problem, the embodiments of the invention provide a kind of cooperateed with based on the multilink without rate coding to pass
Transmission method and device, it is just provided in an embodiment of the present invention a kind of based on the multilink cooperative transmission side without rate coding first below
Method is specifically introduced.
Illustrate first, it is provided in an embodiment of the present invention a kind of based on the multilink cooperative transmission side without rate coding
Method, it can apply to the signal transacting in radio communication, on the electronic equipment in field of data transmission, in a particular application the electricity
Sub- equipment can be signal modulation equipment, send equipment, such as emitter etc., be not limited thereto.
Typical case of the embodiment of the present invention in field of data transmission is introduced below：As shown in figure 1, Fig. 1 is this
A kind of application scenarios schematic diagram based on the multilink collaborative transmission method without rate coding that inventive embodiments provide；Emitter
11 have 3 channels, and have undertaken 3 communication tasks, wherein first communication task has 2 packets, second communication
Task is with 3 packets, the 3rd communication task with 4 packets.Emitter 11 has 3 available channels：Channel
11st, channel 12 and channel 13.
Emitter 11 is set up 9 packets that above-mentioned 3 communication tasks have as data to be sent, is obtained more
Individual data block, such as set up into 3 data blocks.Then 3 data blocks are subjected to digital fountain code coding, after obtaining three codings
Target data block.The target data block after coding is separately sent in above-mentioned 3 available channels again, such as target data block
1 is sent to channel 21, and target data block 2 is sent to channel 22, and target data block 3 is sent to channel 23.
Last emitter 11 is sent corresponding target data block using each channel.In actual applications, may be used also
So that target data block 1 and target data block 2 are sent into channel 21, target data block 3 is sent to channel 23.Last emitter 11
Corresponding target data block is sent using each channel.And then receiver 12 can receive each target data block, and solve
Initial data is obtained after code.
Fig. 2 is that a kind of flow based on the multilink collaborative transmission method without rate coding provided in an embodiment of the present invention is shown
It is intended to, applied to transmitting terminal, as shown in Fig. 2 methods described includes：
S201：When meeting that data send condition, all packets that acquisition buffer area has preserved are as data to be sent；
Wherein, the data send condition and included：The quantity for all packets that buffer area has preserved reaches pre-arranged code threshold value, or away from
The time interval that data were sent from last time reaches preset time threshold.
In embodiments of the present invention, packet caused by each task handled can be stored in caching by transmitting terminal
In.Also, when meeting that data send condition, all packets preserved in caching are obtained as data to be sent.Wherein,
The data stored in above-mentioned packet can be audio, video, image, text, executable program etc., the embodiment of the present invention
It is not defined herein.
Exemplary, transmitting terminal assume responsibility for 3 communication tasks, wherein first communication task has 20 packets, the
Two communication tasks with 30 packets, the 3rd communication task with 40 packets, by the collection of above-mentioned 90 packets
Cooperate as data to be sent.
Wherein it is possible to the caching of transmitting terminal is set as follows, when the total amount of data of the packet preserved in caching
More than pre-arranged code threshold value, namely when starting the threshold value of coding, during such as 10M, it is determined that meeting data transmission condition.Actually should
In, the time interval of data can also be sent real-time recording distance last time, when the time interval reaches preset time threshold,
Such as 1 second, 2 seconds, it is determined that meeting that data send condition.
Using the above embodiment of the present invention, the real-time of communication can be improved.In addition, stored in the caching that transmitting terminal has
The total amount of data of packet when exceeding pre-arranged code threshold value, using the packet received as data to be sent, it is possible to reduce
To the occupancy of transmitting terminal caching.Transmitting terminal so can use it is remaining caching continue to remaining packet.
S202：According to default length value, the data to be sent are constructed as at least one data block.
Exemplary, using the data to be sent in S201 steps as an entirety, it is constructed as at least one data block.Its
In, packet can be populated into same data block caused by different tasks.Specifically, can according to default length value,
The digit for the data that i.e. each data block includes, data to be sent are constructed as at least one data block.Such as, can will be to be sent
Data are constructed as equal length and are the data block of default length value.
It is appreciated that the number for the data block set up can be one, or it is multiple, specifically by data to be sent
Size and default length value determine.Such as, then can be with when the size of data to be sent is equal to or less than default length value
Data to be sent are constructed as a data block；, can will be pending when the size of data to be sent is more than default length value
Data are sent to be constructed as multiple data blocks.
S203：The quantity of data block to be sent every time is determined successively, and the data of respective amount are selected in each data block
Block carries out digital fountain code coding, obtains corresponding each target data block, and select corresponding respectively with each target data block
Each available channel, pass through each available channel send corresponding to each target data block.
Exemplary, can be according to default coding degree, for example, default coding degree is 3, then every time from S202 steps
In randomly choose 3 data blocks in obtained data block, 3 data blocks of selection are subjected to XOR, and this 3 data blocks are made
For a coding groups, while the coding groups are encoded using the coding method of digital fountain code, you can the mesh after being encoded
Mark data block.
It is understood that the quantity of the target data block after obtained coding is more, and by the mesh after obtained coding
Mark data block sends bigger to receiving terminal, the successfully decoded probability of receiving terminal.Default coding degree distribution includes but are not limited to
The distribution of robust arc waviness, the distribution of truncations degree and degree of fixation distribution, and the coded system of the digital fountain code of use is included but not
It is only limitted to LT codes (Luby Transform, rupee conversion code), Raptor codes (Rapid tornado Code, quick whirlwind
Code).It should be noted that the above-mentioned specific coding process to be encoded using digital fountain code to each data block, this is
Prior art, repeat no more here.
It is distributed according to default coding degree, random selection answers the data block of quantity to carry out XOR with the coding Degree distributions,
Using the data block after XOR as coding groups, it can make that there is correlation between each data block, and then be beneficial to receiving terminal solution
Code.Under normal circumstances, digital fountain code coding step is placed in MAC (Media Acess Control, medium access control) layer
Perform.
In actual applications, digital fountain code coding/decoding technology has relatively low encoding and decoding complexity, and digital fountain code is compiled
The encoding and decoding complexity of decoding is close to linear encoding and decoding complexity.And in the prior art, in other correcting and eleting codes coding and decoding technologies
Need to be related to matrix operation, its computational complexity is non-linear encoding and decoding complexity.That is, with data encoded
The increase of amount, prior art can be increasing relative to the encoding and decoding complexity of the embodiment of the present invention, therefore, the embodiment of the present invention
There is the advantages of encoding and decoding complexity is relatively low relative to prior art.
In addition, in the prior art, if the communication quality of the channel of a certain modulator selection declines, it will usually use letter
Road allocation algorithm selects another channel, replaces current channel.But using channel allocation algorithm extra computing can be brought to hold
Pin, and there is correlation between the data block after being encoded in the embodiment of the present invention, led even if the communication quality of a certain channel declines
The data block after the coding of the transmission is caused to be damaged, receiving terminal can also be according to the number after the coding that other channels send over
Decoded according to block.Using the embodiment of the present invention, even if the communication quality of channel declines, adjusted without the distribution to channel
It is whole, relative to prior art, reduce the extra computing overhead that channel allocation algorithm is brought, improve the transmission of target data
Efficiency.
After obtaining target data block, each available channel corresponding with each target data block difference can be selected, by respectively may be used
Each target data block corresponding to channel is sent.Above-mentioned steps are persistently carried out, target data block is repeatedly obtained and is sent to successively
Receiving terminal, until receiving terminal decodes to obtain whole initial data.
Exemplary, the target data block after each coding can be directed to, the target data block after this is encoded is sent out at random
Give a corresponding modulator in multiple radio frequency interfaces that client has.And then the modulation by radio frequency interface can be obtained
What device selected from available channel, distinguish corresponding available channel with the target data block after coding.
For example, transmitting terminal has 5 radio frequency interfaces, each radio frequency interface has a modulator, as radio frequency interface 1 has
Have modulator 1, radio frequency interface 2 with modulator 2, radio frequency interface 3 with modulator 3, radio frequency interface 4 with modulator 4, radio frequency
Interface 5 has modulator 5.Such as the target data block 1 after coding and the target data block 2 after coding can be sent to modulator
1, the target data block 3 after coding is sent to modulator 2, and the target data block 4 after coding is sent to modulator 3, after coding
Target data block 5 is sent to modulator 4, and the target data block 6 after coding is sent to modulator 5.
It is emphasized that the process that the above-mentioned target data block for after coding sends modulator is to continue to carry out, often
It is randomly selected that target data block after the coding of secondary generation, which is sent to modulator, and each modulation can receive different numbers
Target data block after the coding of amount, the target data block after the coding of identical quantity can also be received；Modulator can also incite somebody to action
Sequencing or other order composition queue of the target data block according to reception after the multiple codings received, is then pressed
Send the target data block after coding successively according to the queue.Transmitting terminal persistently sends the target data block after coding, receives termination
The laggard row decoding of target data block after coding is received, after receiving terminal is successfully decoded, successfully decoded disappear is returned to transmitting terminal
Breath, transmitting terminal stop sending the target data block after coding.
Furthermore when the data volume of the communication service in the prior art, undertaken when transmitting terminal is smaller, that is to say, that transmitting terminal has
When the modulator of multiple radio frequency interfaces is in idle condition；During the size of such as less than default data volume, channel allocation algorithm
It can be selected accordingly by the modulator of all data distributions of the communication service to some specific radio frequency interface, and by the modulator
Channel send.And the embodiment of the present invention is applied, the target data block after digital fountain code is encoded is sent to multiple penetrate
The modulator of frequency interface, relative to prior art, more channels can be utilized to send target data block, letter can be made full use of
Road resource, and then improve the transmitting efficiency of data.
In actual applications, each modulator can randomly choose available channel, and can also be selected according to preset rules can
Use channel.For example, preset rules can be user or equipment be in advance the setting of each modulator available channel or
Each modulator utilizes the channel of channel selection algorithm selection.The embodiment of the present invention does not select modulator the side of channel herein
Method makes restriction.
The modulator of each radio frequency interface can select corresponding channel from all available channels, it is generally the case that can incite somebody to action
All available channels all for send coding after data block.
, can be to the data of respective numbers after data to be sent are constructed as data block by transmitting terminal in the embodiment of the present invention
Block carries out digital fountain code coding, obtains corresponding each target data block, makes have correlation between each target data block, connect
Receiving end, which only needs to receive partial target data block, can decode former data, relative in the prior art, can improve data
The reliability of transmission.
Optionally, in order to improve data transmission efficiency, redundancy unnecessary in transmitting terminal cataloged procedure is reduced, transmitting terminal can
With the feedback information according to receiving terminal, to determine the quantity of data block to be sent every time, also can the distribution of degree of progress tune
It is whole.Specifically, after transmitting terminal obtains multiple data blocks, it may be determined that the numbering of each data block.Such as can be according to the number of data block
Amount, each data block is numbered, and the numbering of each data block can be 1,2,3,4 etc..
Afterwards, transmitting terminal can determine the quantity of data block to be sent first first, be such as 3, then in each data block
The data block of middle selection respective amount carries out digital fountain code coding, obtains corresponding each target data block, and select and each mesh
Each available channel corresponding to marking data block difference, pass through each target data block corresponding to the transmission of each available channel.
After receiving terminal receives each target data block, row decoding can be entered to each target data block, determined successfully decoded
The numbering of data block, and the feedback information for including the numbering is sent to transmitting terminal.After transmitting terminal receives feedback information, Ke Yigen
The target data number of blocks for determining to send next time according to the feedback information；And continue to select the data of respective amount in each data block
Block carries out digital fountain code coding, obtains corresponding each target data block, and selects corresponding each respectively with each target data block
Available channel, by each target data block corresponding to the transmission of each available channel, until received feedback information includes institute
The numbering of some target data blocks shows that decoding success goes out all target data blocks to receiving terminal, and transmitting terminal can stop this
Data send.
Specifically, transmitting terminal is based on feedback information, it is determined that the quantity for the target data block that next time sends, namely adjustment degree point
The step of cloth, is as follows：
Assuming that currently having transmitted i coding groups, l original packet has been translated.At the end of working as decoding not, receiving terminal
The coding groups not discharged can be left, we term it remaining coding groups.The degree of remaining coding groups is necessarily less than or equal to k-
l.Because receiving terminal known to transmitting terminal decodes situation, and then adjustment degree is distributed, therefore the coding groups degree sent later is less than surely
Equal to k-l.The degree of the current remaining coding groups of order is distributed as r (x), and robust solitary wave is distributed as μ (x).
Because the distribution of robust solitary wave is with certain outstanding property, therefore the degree for the coding groups for selecting next to send makes
Receiving terminal remnants coding groups combine newly receive coding groups degree distribution level off to robust solitary wave distribution.Order is currently at
State to have translated l original packet, remaining coding groups be present in receiving terminal.It is as follows to spend selection strategy：
(1) assume that next coding groups degree that transmitting terminal is sent is d (d ∈ { 1,2 ..., k-l }), encoded with reference to remnants
The degree situation of packet, calculating degree distribution rd(x)。
(2) calculate relative entropy D (μ | | rd), select degree ds of the minimum d of relative entropy as next coding groups.
Because the d complexities for searching for optimal are higher, therefore the feature of relative entropy is analyzed, find more efficient algorithm.It is false
If the number that remaining coding groups degree is i is niI ∈ { 1,2 ..., k-l }, and
When l is constant, μl(x) it is fixed function.Then problem is summarized as
Appoint and take i, j ∈ { 1,2 ..., k-l }, ri(x),rj(x) there was only x=i, value differs at x=j.Therefore it is to compare D
(μ||ri) and D (μ | | rj) size, only it need to compare μl(i)logri(i)+μl(j)logriAnd μ (j)l(i)logrj(i)+μl(j)
logrj(j) r of maximum, is chosend(x), the quantity of target data block as next time to be sent.
Fig. 3 is the structured flowchart of transmitting terminal in the embodiment of the present invention.As shown in figure 3, in the embodiment of the present invention, transmitting terminal can
With including an encoder, multiple sending modules and a receiving module.Wherein, each sending module is by an antenna and one
Modulator forms.Receiving module is made up of an antenna and a demodulator.
It is as follows to implement step：
Step 1：Caused packet is stored in buffer area by each business of transmitting terminal；
Step 2：When data to be sent, the data in buffer area are divided into isometric data block；
Step 3：Digital fountain code coding is carried out to isometric data block, caused coding groups are sent to radio frequency and connect at random
On the modulator of mouth；
Step 4：Each radio frequency interface selects different available channels to send allocated packet；
Step 5：Receiving module receives the feedback that receiving terminal is sent, and adjusts the degree distribution for next sending coding groups.
There is provided with embodiment illustrated in fig. 2 of the present invention a kind of relative based on the multilink collaborative transmission method without rate coding
Should, the embodiment of the present invention additionally provide it is a kind of based on the multilink collaborative transmission method without rate coding, applied to receiving terminal, such as
Shown in Fig. 4, this method includes：
S401：The target data block that receiving end/sending end is sent, wherein, the target data block is that the transmitting terminal will be pending
After sending data to be constructed as at least one data block, to what is obtained after each data block progress digital fountain code coding.
Exemplary, demodulator corresponding to each radio frequency interface of receiving terminal is received, after the coding that transmitting terminal is sent
Target data block.For example, the target data block 2 after target data block 1 and coding after coding is received using channel 1；Utilize letter
Road 2 receives the target data block 3 after coding；The target data block 4 after coding is received using channel 3；Utilize channel 4 and channel 6
The target data block 5 after coding is received, the target data block 6 after coding is received using channel 5.
Wherein, transmitting terminal is set up to original data to be sent, and shown in the process and Fig. 2 encoded to data block
It is identical in embodiment, herein without repeating.
S402：When the quantity of the target data block received is more than default decoding threshold value, using with the transmission
Hold interpretation method corresponding to the coding method used to enter row decoding to each target data block of reception, obtain corresponding data.
Exemplary, all demodulators can delay the target data block after the coding of reception, first storage to receiving terminal
Deposit in area, the data block after coding that receiving terminal receives exceedes default decoding threshold value, that is, starts the threshold value decoded, such as 18
When, receiving terminal can enter row decoding to the target data block after the coding of reception.
It is understood that the decoding algorithm used in S402 steps is, it is corresponding with the encryption algorithm that transmitting terminal uses
Decoding algorithm, decoding algorithm include but are not limited to conventional BP algorithm, GE algorithms or the combination of the two.
Using embodiment illustrated in fig. 4 of the present invention, there is correlation between each target data block received due to receiving terminal,
Receiving terminal only needs that according to the target data block after the receiving portion coding from multiple channels initial data can be recovered, can be with
The decoding reliability of data.
Optionally, in order to improve data transmission efficiency, redundancy unnecessary in transmitting terminal cataloged procedure is reduced, transmitting terminal can
With the feedback information according to receiving terminal, to determine the quantity of data block to be sent every time.
After receiving terminal receives each target data block, row decoding can be entered to each target data block, determined successfully decoded
The numbering of data block, and the feedback information for including the numbering is sent to transmitting terminal.After transmitting terminal receives feedback information, Ke Yigen
The target data number of blocks for determining to send next time according to the feedback information.
The numbering of its successfully decoded target data block is sent to transmitting terminal by receiving terminal, and transmitting terminal is according to the feedback information
It is determined that the target data number of blocks that next time sends, and then data block coding can be reasonably carried out, reduce transmitting terminal cataloged procedure
In unnecessary redundancy, improve data transmission efficiency.
Optionally, receiving terminal can judge whether all mesh according to the numbering of its successfully decoded target data block
It is successfully decoded to mark data block；If not, the step of returning to the target data block for performing receiving end/sending end transmission, namely continue to connect
The target data block that sending end is sent is received and dispatched, so as to ensure successfully decoded all target data blocks, ensures the accurate of data receiver
Property.
Fig. 5 is the structured flowchart of receiving terminal in the embodiment of the present invention.As shown in figure 5, in the embodiment of the present invention, receiving terminal can
With including a decoder, two buffer areas, multiple receiving modules and a sending module.Each receiving module is by an antenna
Formed with a demodulator.Sending module is made up of an antenna and a modulation module.
It is as follows to implement step：
Step 1：Radio frequency interface receives radiofrequency signal and demodulated, and the packet demodulated is put into buffer area；
Step 2：Number of packet in digital fountain code decoder detection buffer area, when number of packet therein is more than certain
During value, start to perform decoding process.The numbering of the data block translated feeds back to transmitting terminal.If data block is not translated all,
Return to step 1；If successfully decoded, all isometric data block is obtained, then into step 3.
Step 3：After obtaining all isometric data blocks, by the packet of each business of data block reduction meeting.
Step 4：Packet is restored in each business.
Corresponding with embodiment illustrated in fig. 2 of the present invention in order to solve prior art problem, present invention also offers a kind of base
In the multilink cooperative transmission device without rate coding, applied to transmitting terminal, as shown in fig. 6, described device includes：
Acquisition module 610, for when meeting that data send condition, obtaining all packet conducts that buffer area has preserved
Data to be sent；Wherein, the data send condition and included：The quantity for all packets that buffer area has preserved reaches default volume
Code threshold value, or reach preset time threshold apart from the time interval of last time transmission data；
Module 620 is set up, for according to default length value, the data to be sent to be constructed as at least one data
Block；
Sending module 630, for determining the quantity of data block to be sent every time successively, selected in each data block corresponding
The data block of quantity carries out digital fountain code coding, obtains corresponding each target data block, and select and each target data
Each available channel corresponding to block difference, pass through each target data block corresponding to each available channel transmission.
, can be to the data of respective numbers after data to be sent are constructed as data block by transmitting terminal in the embodiment of the present invention
Block carries out digital fountain code coding, obtains corresponding each target data block, makes have correlation between each target data block, connect
Receiving end, which only needs to receive partial target data block, can decode former data, relative in the prior art, can improve data
The reliability of transmission.
Optionally, the establishment module 620, specifically for the data to be sent are constructed as into equal length and are pre-
If length value data block.
Optionally, described device also includes：
Determining module, for determining the numbering of each data block；
The sending module 630, including：
Determination sub-module, for determining the quantity of data block to be sent first；
Sending submodule, for selecting the data block of respective amount to carry out digital fountain code coding in each data block, obtain
To corresponding each target data block, and select to distinguish corresponding each available channel with each target data block, by described each
Each target data block corresponding to available channel transmission；
Receiving submodule, for receiving the feedback information of receiving terminal transmission；Wherein, the feedback information includes described connect
The numbering of the successfully decoded target data block of receiving end；
Implementation sub-module, for the target data number of blocks for determining to send next time according to the feedback information；And trigger institute
Sending submodule is stated, until received feedback information includes the numbering of all target data blocks.
Optionally, the packet preserved in the buffer area is to be counted caused by each task that the transmitting terminal is being handled
According to bag.
Corresponding with embodiment illustrated in fig. 4 of the present invention in order to solve prior art problem, present invention also offers a kind of base
In the multilink cooperative transmission device without rate coding, applied to receiving terminal, as shown in fig. 7, described device includes：
Receiving module 710, the target data block sent for receiving end/sending end, wherein, the target data block is described
After data to be sent are constructed as at least one data block by transmitting terminal, obtained after carrying out digital fountain code coding to each data block
's；
Decoding module 720, for when the quantity of the target data block received is more than default decoded number, using
Interpretation method corresponding with the coding method that the transmitting terminal uses enters row decoding to each target data block of reception, obtains correspondingly
Data.
, can be to the data of respective numbers after data to be sent are constructed as data block by transmitting terminal in the embodiment of the present invention
Block carries out digital fountain code coding, obtains corresponding each target data block, makes have correlation between each target data block, connect
Receiving end, which only needs to receive partial target data block, can decode former data, relative in the prior art, can improve data
The reliability of transmission.
Optionally, described device also includes：
Determining module, for determining the numbering of successfully decoded target data block, and send the feedback for including the numbering
Information gives the transmitting terminal.
Optionally, described device also includes：
Judge module, for judging whether that all target data blocks are successfully decoded；If not, trigger the reception mould
Block.
For device embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, it is related
Part illustrates referring to the part of embodiment of the method.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for device,
For equipment, storage medium embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, correlation
Place illustrates referring to the part of embodiment of the method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
- It is 1. a kind of based on the multilink collaborative transmission method without rate coding, it is characterised in that applied to transmitting terminal, methods described Including：When meeting that data send condition, all packets that acquisition buffer area has preserved are as data to be sent；Wherein, it is described Data, which send condition, to be included：The quantity for all packets that buffer area has preserved reaches pre-arranged code threshold value, or is sent out apart from last time The time interval of data is sent to reach preset time threshold；According to default length value, the data to be sent are constructed as at least one data block；The quantity of data block to be sent every time is determined successively, selects the data block of respective amount to carry out numeral in each data block Fountain codes encode, and obtain corresponding each target data block, and select to distinguish corresponding each available letter with each target data block Road, pass through each target data block corresponding to each available channel transmission.
- 2. according to the method for claim 1, it is characterised in that it is described according to default length value, by the number to be sent Include according at least one data block is constructed as：The data to be sent are constructed as equal length and it is the data block of default length value.
- 3. according to the method for claim 1, it is characterised in that described that the data to be sent are constructed as at least one number After block, methods described also includes：Determine the numbering of each data block；The quantity for determining data block to be sent every time successively, the data block of respective amount is selected to carry out in each data block Digital fountain code encodes, obtain corresponding to each target data block, and select to distinguish with each target data block and corresponding respectively may be used With channel, included by each target data block corresponding to each available channel transmission：It is determined that the quantity of data block to be sent first, selects the data block of respective amount to carry out digital fountain in each data block Code coding, obtain corresponding to each target data block, and select with each target data block corresponding each available channel respectively, it is logical Cross each target data block corresponding to each available channel transmission；Receive the feedback information that receiving terminal is sent；Wherein, the feedback information includes the successfully decoded mesh of the receiving terminal Mark the numbering of data block；The target data number of blocks for determining to send next time according to the feedback information；And return and selected described in execution in each data block The data block for selecting respective amount carries out digital fountain code coding, obtains corresponding each target data block, and select and each mesh Mark data block respectively corresponding to each available channel, by each available channel send corresponding to each target data block the step of, Until received feedback information includes the numbering of all target data blocks.
- 4. according to the method described in claim any one of 1-3, it is characterised in that the packet preserved in the buffer area is Packet caused by each task that the transmitting terminal is being handled.
- It is 5. a kind of based on the multilink collaborative transmission method without rate coding, it is characterised in that applied to receiving terminal, methods described Including：The target data block that receiving end/sending end is sent, wherein, the target data block is the transmitting terminal by data group to be sent Build as after at least one data block, carry out what is obtained after digital fountain code coding to each data block；When the quantity of the target data block received is more than default decoding threshold value, using the volume used with the transmitting terminal Interpretation method corresponding to code method enters row decoding to each target data block of reception, obtains corresponding data.
- 6. according to the method for claim 5, it is characterised in that methods described also includes：The numbering of successfully decoded target data block is determined, and sends and feeds back to the transmitting terminal comprising the numbering.
- 7. according to the method for claim 6, it is characterised in that methods described also includes：Judge whether that all target data blocks are successfully decoded；If not, the step of returning to the target data block for performing the receiving end/sending end transmission.
- It is 8. a kind of based on the multilink cooperative transmission device without rate coding, it is characterised in that applied to transmitting terminal, described device Including：Acquisition module, for when meeting that data send condition, all packets that acquisition buffer area has preserved to be as to be sent Data；Wherein, the data send condition and included：The quantity for all packets that buffer area has preserved reaches pre-arranged code threshold Value, or reach preset time threshold apart from the time interval of last time transmission data；Module is set up, for according to default length value, the data to be sent to be constructed as at least one data block；Sending module, for determining the quantity of data block to be sent every time successively, respective amount is selected in each data block Data block carries out digital fountain code coding, obtains corresponding each target data block, and selects to distinguish with each target data block Corresponding each available channel, pass through each target data block corresponding to each available channel transmission.
- 9. device according to claim 8, it is characterised in that described device also includes：Determining module, for determining the numbering of each data block；The sending module, including：Determination sub-module, for determining the quantity of data block to be sent first；Sending submodule, for selecting the data block of respective amount to carry out digital fountain code coding in each data block, obtain pair Each target data block answered, and select to distinguish corresponding each available channel with each target data block, by described each available Each target data block corresponding to channel transmission；Receiving submodule, for receiving the feedback information of receiving terminal transmission；Wherein, the feedback information includes the receiving terminal The numbering of successfully decoded target data block；Implementation sub-module, for the target data number of blocks for determining to send next time according to the feedback information；And trigger the hair Submodule is sent, until received feedback information includes the numbering of all target data blocks.
- It is 10. a kind of based on the multilink cooperative transmission device without rate coding, it is characterised in that applied to receiving terminal, the dress Put including：Receiving module, the target data block sent for receiving end/sending end, wherein, the target data block is that the transmitting terminal will After data to be sent are constructed as at least one data block, to what is obtained after each data block progress digital fountain code coding；Decoding module, for when the quantity of the target data block received is more than default decoded number, using with it is described Interpretation method corresponding to the coding method that transmitting terminal uses enters row decoding to each target data block of reception, obtains corresponding number According to.
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| CN110233699A (en) * | 2019-05-15 | 2019-09-13 | 北京邮电大学 | Under a kind of limited feedback based on relative entropy without rate coding method and electronic equipment |
| CN110995391A (en) * | 2019-11-18 | 2020-04-10 | 国能日新科技股份有限公司 | Data transmission method in isolated network, server and terminal |
| CN113438056A (en) * | 2021-06-24 | 2021-09-24 | 国汽(北京)智能网联汽车研究院有限公司 | Fountain code-based Internet of vehicles data transmission method and device and storage medium |
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| CN107666372B (en) | 2021-01-08 |
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