CN109302395A - It is a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment - Google Patents
It is a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment Download PDFInfo
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- CN109302395A CN109302395A CN201811170559.3A CN201811170559A CN109302395A CN 109302395 A CN109302395 A CN 109302395A CN 201811170559 A CN201811170559 A CN 201811170559A CN 109302395 A CN109302395 A CN 109302395A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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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
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The present invention provides a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment, and include the following steps, S1: data sending terminal and data receiver establish communication connection；And the structure composition of a frame data is data head (header), cyclic redundancy check and serial data in the Data Physical layer as transmitted by data sending terminal；S2: data receiver receives the data frame M from data sending terminal；And it tests to the cyclic redundancy check in data frame M, if it is detected that there is error condition in data frame M, then feedback information carries out data re-transmission to data sending terminal, data receiver further receives the retransmission frame N from data sending terminal, in actual application, this is correct data for the combination of the data difference part of data frame M and retransmission frame N if cyclic redundancy check is upchecked, if can not be examined by cyclic redundancy check, then continue waiting for another retransmission frame N+1, the correcting data error efficiency under high bit-error environment can be significantly improved using the correcting data error of such mode.
Description
[technical field]
The present invention relates to correcting data error mode technical field more particularly to a kind of message transmission rate height, error correction rate are prominent
For improving the error correction method of correcting data error efficiency under high bit-error environment.
[background technique]
It is numerous that Radio Transmission Technology is widely used in the scattered security monitoring of distribution, traffic monitoring, industrial monitoring, family's monitoring etc.
There are 433, zigbee, bluetooth, WIFI in field in the widely applied wireless transmission of smart home field, however, specifically used process
In, wireless signal is deteriorated with the increase of transmission range, and transmission will appear error code, when bit error rate height will lead to biography to a certain extent
Defeated speed slowly can not even be transmitted, erroneous retransmissions: when receiving end detects data transmission fault, meeting automatic request for repetition；Redundancy is entangled
Error code: the error correcting code by adding redundancy after the data is transferred, receiving end carry out error correction automatically；In operational process, erroneous retransmissions
The a large amount of time can be consumed in re-transmission, transmission speed is caused to decline, if the bit error rate is higher than certain value (1% or more), every time
Transmission has error code, will be unable to transmit, and the redundancy additionally added in redundant correcting code can reduce valid data ratio, reduces
Transmission speed, and redundant correcting ability is limited, if number of errors is more than error correcting capability, will be unable to error correction.
Based on this, how could effective improve data transfer error correction rate, and do not influence transmission rate, the skill of this field
Art personnel have carried out a large amount of research and development and experiment, and achieve preferable achievement.
[summary of the invention]
To overcome the problems of prior art, the present invention provides a kind of message transmission rate height, and error correction rate is outstanding
For improving the error correction method of correcting data error efficiency under high bit-error environment.
The scheme that the present invention solves technical problem is to provide a kind of for improving correcting data error efficiency under high bit-error environment
Error correction method, include the following steps,
S1: data sending terminal and data receiver establish communication connection, and carry out data transmission；And by data sending terminal institute
The structure composition of a frame data is data head (header), cyclic redundancy check and serial data in the Data Physical layer of transmission；
S2: data receiver receives the data frame M from data sending terminal；And to the cyclic redundancy check in data frame M into
Performing check, if it is detected that occurring error condition in data frame M, feedback information to data sending terminal carries out data re-transmission, number
The retransmission frame N from data sending terminal is further received according to receiving end；
The data head and cyclic redundancy check of S3: correlation data frame M and retransmission frame N；If the data of data frame M and retransmission frame N
Head is identical as cyclic redundancy check, then enters step S4；If the data head of data frame M and retransmission frame N are different from cyclic redundancy check,
It continues waiting for receiving another retransmission frame N+1；
S4: comparing the serial data with the data frame M and retransmission frame N of identical data head and cyclic redundancy check, and finds out and have
The part of difference；
S5: being combined the data difference part of data frame M and retransmission frame N, and further check (CRC) check code, if
Cyclic redundancy check upcheck then this for data frame M and retransmission frame N data difference part combination be correct data；If nothing
Method is examined by cyclic redundancy check, then continues waiting for another retransmission frame N+1；
S6: correcting data error is disposed.
Preferably, in the step S5, the step of being combined for the data difference part of data frame M and retransmission frame N
For B1: determine in data frame M with variance data M1, M2, M3***MZ (Z is the natural number more than or equal to 1) in retransmission frame N, together
Reason, find out N1, N2, N3***NZ corresponding with M1, M2, M3***MZ in data frame M in corresponding retransmission frame (Z be greater than etc.
In 1 natural number)；B2: it is replaced at least one data (any one or more in N1, N2, N3***NZ) in retransmission frame N
The corresponding data in data frame M is changed, replacement of the retransmission frame N to data frame M is completed；B3: every primary replacement of completion carries out primary
Cyclic redundancy check is examined, and circuits sequentially step B1 to step B3.
Preferably, the data sending terminal is connect with the communication connection that data receiver is established for wireless telecommunications, and the nothing
Line communication connection mode includes 433, zigbee, bluetooth, WIFI transmission.
Preferably, when the numerical value of the Z is 2, then the combination after the data replacement of data frame M includes M1N2 and N1M2.
Compared with prior art, the present invention is a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment
By using the communication connection of data sending terminal and data receiver, data frame detection is carried out using CRC check, to data frame M
It is combined with the data difference part of retransmission frame N, and in the case where two data frames have data difference, is combined, verify
Cyclic redundancy check, in actual application, this is directed to data frame M and retransmission frame N if cyclic redundancy check is upchecked data difference
The combination of different part continues waiting for another retransmission frame N+1, using this if can not examine by cyclic redundancy check for correct data
The correcting data error of kind mode can significantly improve the correcting data error efficiency under high bit-error environment.
[Detailed description of the invention]
Fig. 1 is that a kind of process for improving the error correction method of correcting data error efficiency under high bit-error environment of the present invention is illustrated
Figure.
[specific embodiment]
To make the purpose of the present invention, technical solution and advantage are more clearly understood, with reference to the accompanying drawings and embodiments, to this
Invention is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not
For limiting the invention.
Referring to Fig. 1, a kind of error correction method 1 for improving correcting data error efficiency under high bit-error environment of the present invention includes
Following steps,
S1: data sending terminal and data receiver establish communication connection, and carry out data transmission；And by data sending terminal institute
The structure composition of a frame data is data head (header), cyclic redundancy check and serial data in the Data Physical layer of transmission；
S2: data receiver receives the data frame M from data sending terminal；And to the cyclic redundancy check in data frame M into
Performing check, if it is detected that occurring error condition in data frame M, feedback information to data sending terminal carries out data re-transmission, number
The retransmission frame N from data sending terminal is further received according to receiving end；
The data head and cyclic redundancy check of S3: correlation data frame M and retransmission frame N；If the data of data frame M and retransmission frame N
Head is identical as cyclic redundancy check, then enters step S4；If the data head of data frame M and retransmission frame N are different from cyclic redundancy check,
It continues waiting for receiving another retransmission frame N+1；
S4: comparing the serial data with the data frame M and retransmission frame N of identical data head and cyclic redundancy check, and finds out and have
The part of difference；
S5: being combined the data difference part of data frame M and retransmission frame N, and further check (CRC) check code, if
Cyclic redundancy check upcheck then this for data frame M and retransmission frame N data difference part combination be correct data；If nothing
Method is examined by cyclic redundancy check, then continues waiting for another retransmission frame N+1；
S6: correcting data error is disposed.
The present invention carries out data frame using CRC check by using the communication connection of data sending terminal and data receiver
Detection, is combined the data difference part of data frame M and retransmission frame N, and in the case where two data frames have data difference,
It is combined, check (CRC) check code, in actual application, this is for data frame M and again if cyclic redundancy check is upchecked
The combination for passing the data difference part of frame N is that correct data continues waiting for another heavy if can not be examined by cyclic redundancy check
Frame N+1 is passed, the correcting data error efficiency under high bit-error environment can be significantly improved using the correcting data error of such mode.
Preferably, in the step S5, the step of being combined for the data difference part of data frame M and retransmission frame N
For B1: determine in data frame M with variance data M1, M2, M3***MZ (Z is the natural number more than or equal to 1) in retransmission frame N, together
Reason, find out N1, N2, N3***NZ corresponding with M1, M2, M3***MZ in data frame M in corresponding retransmission frame (Z be greater than etc.
In 1 natural number)；B2: it is replaced at least one data (any one or more in N1, N2, N3***NZ) in retransmission frame N
The corresponding data in data frame M is changed, replacement of the retransmission frame N to data frame M is completed；B3: every primary replacement of completion carries out primary
Cyclic redundancy check is examined, and circuits sequentially step B1 to step B3.
Preferably, the data sending terminal is connect with the communication connection that data receiver is established for wireless telecommunications, and the nothing
Line communication connection mode includes 433, zigbee, bluetooth, WIFI transmission.
Preferably, when the numerical value of the Z is 2, then the combination after the data replacement of data frame M includes M1N2 and N1M2.
Compared with prior art, the present invention is a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment
1 by using data sending terminal and data receiver communication connection, using CRC check carry out data frame detection, to data frame M
It is combined with the data difference part of retransmission frame N, and in the case where two data frames have data difference, is combined, verify
Cyclic redundancy check, in actual application, this is directed to data frame M and retransmission frame N if cyclic redundancy check is upchecked data difference
The combination of different part continues waiting for another retransmission frame N+1, using this if can not examine by cyclic redundancy check for correct data
The correcting data error of kind mode can significantly improve the correcting data error efficiency under high bit-error environment.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within made modifications, equivalent substitutions and improvements etc., should be included in claim protection model of the invention
Within enclosing.
Claims (4)
1. a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment, it is characterised in that: including following step
Suddenly,
S1: data sending terminal and data receiver establish communication connection, and carry out data transmission；And as transmitted by data sending terminal
Data Physical layer in the structure compositions of a frame data be data head (header), cyclic redundancy check and serial data；
S2: data receiver receives the data frame M from data sending terminal；And the cyclic redundancy check in data frame M is examined
It tests, if it is detected that occurring error condition in data frame M, feedback information to data sending terminal carries out data re-transmission, and data connect
Receiving end further receives the retransmission frame N from data sending terminal；
The data head and cyclic redundancy check of S3: correlation data frame M and retransmission frame N；If the data head of data frame M and retransmission frame N with
Cyclic redundancy check is identical, then enters step S4；If the data head of data frame M and retransmission frame N are different from cyclic redundancy check, continue
Etc. another retransmission frame N+1 to be received；
S4: the serial data with the data frame M and retransmission frame N of identical data head and cyclic redundancy check is compared, and is found out with difference
Part；
S5: being combined the data difference part of data frame M and retransmission frame N, and further check (CRC) check code, if the school CRC
It is correct data that code check, which is tested, by then this combination for being directed to the data difference part of data frame M and retransmission frame N；If can not pass through
Cyclic redundancy check is examined, then continues waiting for another retransmission frame N+1；
S6: correcting data error is disposed.
2. it is as described in claim 1 a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment, it is special
Sign is: in the step S5, the step of being combined for the data difference part of data frame M and retransmission frame N, is B1: determining
It is similarly found out pair in data frame M with variance data M1, M2, M3***MZ (Z be natural number) more than or equal to 1 in retransmission frame N
(Z is the nature more than or equal to 1 by N1, N2, N3***NZ corresponding with M1, M2, M3***MZ in data frame M in the retransmission frame answered
Number)；B2: at least one data (any one or more in N1, N2, N3***NZ) replacement data frame M in retransmission frame N
In corresponding data, complete replacement of the retransmission frame N to data frame M；B3: every primary replacement of completion carries out a cyclic redundancy check inspection
It tests, circuits sequentially step B1 to step B3.
3. it is as described in claim 1 a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment, it is special
Sign is: the data sending terminal is that wireless telecommunications are connect, and the wireless telecommunications connect with the communication connection that data receiver is established
Connecing mode includes 433, zigbee, bluetooth, WIFI transmission.
4. it is as claimed in claim 2 a kind of for improving the error correction method of correcting data error efficiency under high bit-error environment, it is special
Sign is: when the numerical value of the Z is 2, then the combination after the data replacement of data frame M includes M1N2 and N1M2.
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Cited By (5)
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| CN111370010A (en) * | 2020-03-17 | 2020-07-03 | 中国电子科技集团公司第五十四研究所 | Voice lossless transmission method suitable for rate self-adaption |
| CN112019485A (en) * | 2019-05-31 | 2020-12-01 | 华为技术有限公司 | Message generation and verification method and device |
| CN112213578A (en) * | 2020-09-23 | 2021-01-12 | 青岛鼎信通讯股份有限公司 | Medium voltage line variable relation identification method |
| CN112230622A (en) * | 2020-10-15 | 2021-01-15 | 中汽院汽车技术有限公司 | CAN bus communication information security enhancement method based on CRC (Cyclic redundancy check) |
| CN112511276A (en) * | 2020-11-24 | 2021-03-16 | 广州技象科技有限公司 | Data processing method and device |
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| CN112511276A (en) * | 2020-11-24 | 2021-03-16 | 广州技象科技有限公司 | Data processing method and device |
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