CN110401458B - Data check coding method and system - Google Patents
Data check coding method and system Download PDFInfo
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- CN110401458B CN110401458B CN201910696158.XA CN201910696158A CN110401458B CN 110401458 B CN110401458 B CN 110401458B CN 201910696158 A CN201910696158 A CN 201910696158A CN 110401458 B CN110401458 B CN 110401458B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6508—Flexibility, adaptability, parametrability and configurability of the implementation
- H03M13/6511—Support of multiple decoding rules, e.g. combined MAP and Viterbi decoding
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6569—Implementation on processors, e.g. DSPs, or software implementations
Abstract
The invention discloses a data checking and coding method and a data checking and coding system, and relates to the field of data processing. The method comprises the following steps: acquiring at least two data check codes, and respectively determining the resource requirements of each data check code on information source equipment and information sink equipment; acquiring current resource occupation conditions of information source equipment and information sink equipment waiting for data transmission; and selecting a data check code according with a preset rule according to the resource requirement and the resource occupation condition, and coding the data to be transmitted. The invention avoids data retransmission caused by the error bit number exceeding the error correction capability of the fixed code when the occupancy rate of the computing resources of the two parties is low, and improves the stability of data transmission and the resource utilization rate.
Description
Technical Field
The present invention relates to the field of data processing, and in particular, to a data check coding method and system.
Background
In order to improve the reliability of data transmission, data check codes for error control are usually added in the computer communication process to perform error detection and correction on data. Commonly used check codes include parity codes, hamming codes, cyclic redundancy codes, reed solomon codes, and the like.
At present, a fixed coding mode is generally adopted, and after a coding mode is selected by both a source and a sink, the transmitted data is coded by using a selected check code in the communication process. The defects are as follows: therefore, the error correction capability of the check code is fixed, when the resource occupancy rates of the computers of the two parties become low, if the number of the error occurring bits just exceeds the error correction capability of the fixed code, the sink computer cannot correct the error at the moment, the data is abandoned, and the source computer needs to retransmit the data, so that the time and the delay of data transmission are increased.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a data check encoding method, a storage medium and a data check encoding system, aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows:
a data parity encoding method, comprising:
acquiring at least two data check codes, and respectively determining the resource requirements of each data check code on information source equipment and information sink equipment;
acquiring current resource occupation conditions of information source equipment and information sink equipment waiting for data transmission;
and selecting a data check code which accords with a preset rule according to the resource requirement and the resource occupation condition, and coding the data to be transmitted.
The invention has the beneficial effects that: according to the data check coding method provided by the invention, the data check coding mode is dynamically adjusted according to the resource occupation condition of the information source equipment and the information sink equipment, and the data check code suitable for the current resource occupation condition is flexibly selected to code the data to be transmitted, so that the data retransmission caused by the error bit number exceeding the error correction capability of the fixed code when the resource occupation rates of the two parties are reduced is avoided, and the stability of data transmission and the resource utilization rate are improved.
Another technical solution of the present invention for solving the above technical problems is as follows:
a storage medium, wherein instructions are stored in the storage medium, and when a computer reads the instructions, the computer is caused to execute the data verification encoding method according to the above technical solution.
Another technical solution of the present invention for solving the above technical problems is as follows:
a data verification encoding system, comprising:
the communication unit is used for acquiring at least two data check codes and respectively determining the resource requirements of each data check code on the information source equipment and the information sink equipment;
the acquisition unit is used for acquiring the current resource occupation conditions of the information source equipment and the information sink equipment waiting for data transmission;
and the coding unit is used for selecting a data check code meeting a preset rule according to the resource requirement and the resource occupation condition and coding the data.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic flow chart of a data checking and encoding method according to an embodiment of the present invention;
fig. 2 is a structural framework diagram provided by an embodiment of the data verification encoding system of the present invention.
Detailed Description
The principles and features of the present invention will be described with reference to the following drawings, which are illustrative only and are not intended to limit the scope of the invention.
As shown in fig. 1, a schematic flow chart provided by an embodiment of the data verification encoding method of the present invention is shown, where the data verification encoding method includes:
s1, at least two kinds of data check codes are obtained, and the resource requirements of each kind of data check code on the source equipment and the sink equipment are respectively determined.
It should be understood that resource requirements may include: CPU occupancy requirements, memory availability requirements, etc.
It should be understood that the data check code includes parity code, hamming code, cyclic redundancy code, reed solomon code, etc., and the larger the minimum code distance of the check code is, the stronger the error correction capability is, and the performance resource overhead is also large, so that check codes with different error correction capabilities, that is, check codes with different minimum code distances, can be selected.
For example, a plurality of check codes with the minimum code distance increasing or decreasing can be selected to cover all performance resource spending, when the resource occupation is large, the check code with the small performance spending is selected to reduce the system resource consumption, and when the resource occupation is small, the check code with the large performance spending is selected to improve the error correction capability of the check code.
The following description will be given with reference to a specific example.
For example, 3 check codes with high to low error correction capability are selected. The first check code can correct 3-bit errors, and requires that the CPU occupancy rate of a signal source computer is less than 50%, the available memory capacity of the signal source computer is more than 800KB, the CPU occupancy rate of a signal sink computer is less than 40%, and the available memory capacity of the signal sink computer is more than 900 KB. The second check code can correct 2-bit errors, and requires that the CPU occupancy rate of a signal source computer is less than 60%, the available memory capacity of the signal source computer is more than 700KB, the CPU occupancy rate of a signal sink computer is less than 50%, and the available memory capacity of the signal sink computer is more than 800 KB. The third check code can correct 1 bit error, and requires that the CPU occupancy rate of the source computer is less than 70%, the available memory capacity of the source computer is greater than 600KB, the CPU occupancy rate of the sink computer is less than 60%, and the available memory capacity of the sink computer is greater than 700 KB.
Optionally, after all the data check codes are obtained, sorting may be performed according to the error correction capability of each data check code, so that when the check codes are selected subsequently, the check codes are judged one by one according to the sorting sequence, and the judgment efficiency is improved.
And S2, acquiring the current resource occupation conditions of the source equipment and the sink equipment waiting for data transmission.
It should be understood that resource occupancy may include: CPU occupancy, memory availability, etc. The source device may typically be a source computer and the sink device may typically be a sink computer.
The following description will be given with reference to a specific example.
For example, the current CPU occupancy of the source computer is 55%, the current available memory amount of the source computer is 750KB, the current CPU occupancy of the sink computer is 45%, and the current available memory amount of the sink computer is 850 KB.
It should be understood that the above-mentioned collection process can be implemented by the source computer, the sink computer, or an additional computer, and specifically, the resource occupation of the source computer and the sink computer can be read by writing a program and then sent to the source computer for processing. The specific means for collecting the occupation of computer resources are well-established in the art, and conventional means can be implemented, which are not described herein again.
Preferably, the acquisition may be performed according to a preset acquisition rule, for example, the acquisition may be performed at intervals of a preset time, such as 1 second, so that it can be understood that the check code selected by the method is used for the data check code of the next 1 second, and after the acquisition of the next 1 second, which data check code is used is determined according to the resource occupation situation after 1 second.
And S3, selecting a data check code according with a preset rule according to the resource requirement and the resource occupation condition, and encoding the data to be transmitted.
It should be understood that the preset rule may be set according to actual requirements, for example, the resource requirements required by the coding mode of each check code and the acquired resource occupation conditions may be sequentially compared, and then the check code satisfying the resource requirements may be selected, for example, the check code with the strongest error correction capability may be selected for coding, so as to improve the error correction capability, and the check code with the worst error correction capability may also be selected, so as to reduce the resource overhead.
The following description will be given with reference to a specific example.
Taking the two specific examples as examples, the comparison shows that the current resource status does not satisfy the resource requirement of the first coding scheme and satisfies the resource requirement of the second coding scheme, so the second coding scheme is selected.
According to the data check coding method provided by the embodiment, the data check coding mode is dynamically adjusted according to the resource occupation conditions of the source equipment and the sink equipment, and the data check code suitable for the current resource occupation condition is flexibly selected to code the data to be transmitted, so that data retransmission caused by the fact that the error bit number exceeds the error correction capability of the fixed code when the resource occupation rates of the two parties are low is avoided, and the stability of data transmission and the resource utilization rate are improved.
Optionally, in some embodiments, the method may further include:
and transmitting the encoded data and the selected data check code from the source equipment to the sink equipment.
It should be understood that if the source device selects the check code and encodes the data, the data can be directly transmitted to the sink device after being encoded; if the third-party computer selects the check code, the selected check code instruction can be sent to the information source equipment after the check code is selected, and the information source equipment selects the corresponding check code according to the instruction to encode the data to be transmitted after receiving the instruction.
The computer communication protocol includes a coding mode flag indicating which coding mode is adopted for the data transmission, and the sink device selects a corresponding decoding mode for decoding verification according to the coding mode flag after receiving the data.
Optionally, in some embodiments, acquiring current resource occupation conditions of the source device and the sink device waiting for data transmission may specifically include:
and acquiring the current resource occupation conditions of the information source equipment and the information sink equipment waiting for data transmission according to a preset time interval.
Optionally, in some embodiments, selecting a data check code meeting a preset rule according to the resource demand and the resource occupation condition, and encoding the data may specifically include:
judging whether the resource requirements of each data check code on the information source equipment and the information sink equipment can be met or not according to the resource occupation condition;
it should be understood that satisfaction refers to whether the resource occupancy satisfies the resource requirement, for example, assuming that the first check code can correct 3-bit errors, the CPU occupancy of the source computer is required to be less than 50%, the available memory capacity of the source computer is required to be greater than 800KB, the CPU occupancy of the sink computer is required to be less than 40%, and the available memory capacity of the sink computer is required to be greater than 900 KB. The second check code can correct 2-bit errors, and requires that the CPU occupancy rate of a signal source computer is less than 60%, the available memory capacity of the signal source computer is more than 700KB, the CPU occupancy rate of a signal sink computer is less than 50%, and the available memory capacity of the signal sink computer is more than 800 KB.
The current CPU occupancy of the source computer is 55%, the current available memory amount of the source computer is 750KB, the current CPU occupancy of the sink computer is 45%, and the current available memory amount of the sink computer is 850 KB.
Through comparison, the first check code requires that the CPU occupancy rate of the source computer is less than 50%, while the acquired current CPU occupancy rate of the source computer is 55%, which is greater than the requirement of the first check code on the CPU occupancy rate of the source computer, and other requirements can be compared in the same way.
The comparison can show that the first check code can not meet the resource requirements of the information source equipment and the information sink equipment, and the second check code can meet the resource requirements of the information source equipment and the information sink equipment.
And selecting the data check codes meeting the preset rules from the data check codes meeting the resource requirements, and coding the data.
Optionally, in some embodiments, the resource requirements may include: the method comprises the following steps that (1) the CPU occupancy rate requirement of information source equipment, the memory available quantity requirement of the information source equipment, the CPU occupancy rate requirement of sink equipment and the memory available quantity requirement of the sink equipment are met;
the resource occupancy may include: CPU occupancy rate of the source device, memory available amount of the source device, CPU occupancy rate of the sink device and memory available amount of the sink device.
Optionally, in some embodiments, determining whether the resource requirement of each data check code for the source device and the sink device can be met according to the resource occupation condition may specifically include:
judging whether the CPU occupancy rate requirement of the nth data check code on the information source equipment can be met or not according to the current CPU occupancy rate of the information source equipment;
when the CPU occupancy rate requirement of the nth data check code on the information source equipment is met, judging whether the memory availability requirement of the nth data check code on the information source equipment can be met according to the current memory availability of the information source equipment;
when the memory availability requirement of the nth data check code on the information source equipment is met, judging whether the CPU occupancy requirement of the nth data check code on the information sink equipment can be met according to the current CPU occupancy of the information sink equipment;
when the CPU occupancy rate requirement of the nth data check code on the sink device is met, judging whether the memory availability requirement of the nth data check code on the sink device can be met according to the current memory availability of the sink device;
wherein N is 1, 2, …, and N is the number of types of data check codes.
It should be understood that the resource requirements of the data check code for the source device and the sink device are considered to be satisfied only when the CPU occupancy requirement, the memory availability requirement, the CPU occupancy requirement, and the memory availability requirement of the sink device for a certain check code are all satisfied.
Those skilled in the art can select the determination sequence of the CPU occupancy requirement, the available memory requirement, the CPU occupancy requirement of the sink device, and the available memory requirement according to the actual requirement, and is not limited to the above sequence. The determination may also be made simultaneously.
Optionally, in some embodiments, selecting a data check code meeting a preset rule from data check codes meeting resource requirements, and encoding the data may specifically include:
and selecting the data check code with the largest minimum code distance from the data check codes meeting the resource requirements, and coding the data.
It should be understood that the maximum minimum code distance indicates that the error correction capability of the check code is stronger, and by the above method, the check code with the strongest error correction capability can be selected for encoding under the condition of meeting the resource requirement, so that the reliability of data transmission is improved.
It is understood that some or all of the alternative embodiments described above may be included in some embodiments.
In another embodiment of the present invention, there is provided a storage medium, in which instructions are stored, and when the instructions are read by a computer, the computer is caused to execute the data verification encoding method according to any of the above embodiments.
As shown in fig. 2, a structural framework diagram provided for an embodiment of the data verification coding system of the present invention is a data verification coding system, in which a communication unit 1, an acquisition unit 2, and a coding unit 3 in fig. 2 are located in a source device, where:
the communication unit 1 is configured to obtain at least two data check codes, and determine resource requirements of each data check code on the information source device and the information sink device respectively;
the acquisition unit 2 is used for acquiring the current resource occupation conditions of the information source equipment and the information sink equipment waiting for data transmission;
the encoding unit 3 is configured to select a data check code that meets a preset rule according to the resource demand and the resource occupation situation, and encode the data.
Optionally, in some embodiments, the communication unit 1 may be further configured to transmit the encoded data and the selected data check code from the source device to the sink device.
Optionally, in some embodiments, the acquiring unit 2 may be specifically configured to acquire current resource occupation conditions of the source device and the sink device waiting for data transmission according to a preset time interval.
Optionally, in some embodiments, the encoding unit 3 may be specifically configured to determine whether the resource requirement of each data check code for the source device and the sink device can be met according to the resource occupation condition; and selecting the data check codes meeting the preset rules from the data check codes meeting the resource requirements, and coding the data.
Optionally, in some embodiments, the resource requirements may include: the method comprises the following steps that (1) the CPU occupancy rate requirement of information source equipment, the memory available quantity requirement of the information source equipment, the CPU occupancy rate requirement of sink equipment and the memory available quantity requirement of the sink equipment are met;
the resource occupancy may include: CPU occupancy rate of the source device, memory available amount of the source device, CPU occupancy rate of the sink device and memory available amount of the sink device.
Optionally, in some embodiments, the encoding unit 3 may be specifically configured to determine whether the requirement of the nth data check code on the CPU occupancy rate of the source device can be met according to the current CPU occupancy rate of the source device;
when the CPU occupancy rate requirement of the nth data check code on the information source equipment is met, judging whether the memory availability requirement of the nth data check code on the information source equipment can be met or not according to the current memory availability of the information source equipment;
when the memory availability requirement of the nth data check code on the information source equipment is met, judging whether the CPU occupancy requirement of the nth data check code on the information sink equipment can be met according to the current CPU occupancy of the information sink equipment;
when the CPU occupancy rate requirement of the nth data check code on the sink device is met, judging whether the memory availability requirement of the nth data check code on the sink device can be met according to the current memory availability of the sink device;
wherein N is 1, 2, …, and N is the number of types of data check codes.
Optionally, in some embodiments, the encoding unit 3 may be specifically configured to select a data check code with a largest minimum code distance from data check codes that meet the resource requirement, and encode the data.
It is understood that some or all of the alternative embodiments described above may be included in some embodiments.
It should be noted that the above embodiments are product embodiments corresponding to the previous method embodiments, and for the description of each optional implementation in the product embodiments, reference may be made to corresponding descriptions in the above method embodiments, and details are not described here again.
The reader should understand that in the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described method embodiments are merely illustrative, and for example, the division of steps into only one type of logical functional division may be implemented in practice in other ways, for example, multiple steps may be combined or integrated into another step, or some features may be omitted, or not implemented.
The above method, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A data check encoding method, comprising:
acquiring at least two data check codes, and respectively determining the resource requirements of each data check code on information source equipment and information sink equipment;
acquiring current resource occupation conditions of information source equipment and information sink equipment waiting for data transmission;
and selecting a data check code according with a preset rule according to the resource requirement and the resource occupation condition, and coding the data to be transmitted.
2. The data check encoding method of claim 1, further comprising:
and sending the coded data and the selected data check code from the source equipment to the sink equipment.
3. The data checking and encoding method of claim 1, wherein acquiring current resource occupation of a source device and a sink device waiting for data transmission specifically comprises:
and acquiring the current resource occupation conditions of the information source equipment and the information sink equipment waiting for data transmission according to a preset time interval.
4. The data check coding method according to any one of claims 1 to 3, wherein a data check code that meets a preset rule is selected according to the resource demand and the resource occupation situation, and the data is coded, specifically including:
judging whether the resource requirements of each data check code on the information source equipment and the information sink equipment can be met or not according to the resource occupation condition;
and selecting the data check codes meeting the preset rules from the data check codes meeting the resource requirements, and encoding the data.
5. The data checking and encoding method of claim 4, wherein the resource requirement comprises: the method comprises the following steps that (1) the CPU occupancy rate requirement of information source equipment, the memory available quantity requirement of the information source equipment, the CPU occupancy rate requirement of sink equipment and the memory available quantity requirement of the sink equipment are met;
the resource occupation condition comprises the following steps: CPU occupancy rate of the source device, memory availability rate of the source device, CPU occupancy rate of the sink device and memory availability rate of the sink device.
6. The data check encoding method of claim 5, wherein determining whether the resource requirements of each data check code for the source device and the sink device can be met according to the resource occupation status comprises:
judging whether the CPU occupancy rate requirement of the nth data check code on the information source equipment can be met or not according to the current CPU occupancy rate of the information source equipment;
when the CPU occupancy rate requirement of the nth data check code on the information source equipment is met, judging whether the memory availability requirement of the nth data check code on the information source equipment can be met according to the current memory availability of the information source equipment;
when the memory availability requirement of the nth data check code on the information source equipment is met, judging whether the CPU occupancy requirement of the nth data check code on the information sink equipment can be met according to the current CPU occupancy of the information sink equipment;
when the CPU occupancy rate requirement of the nth data check code on the sink equipment is met, judging whether the memory availability requirement of the nth data check code on the sink equipment can be met according to the current memory availability of the sink equipment;
wherein N is 1, 2, …, and N is the number of the types of the data check codes.
7. The data check encoding method of claim 4, wherein the data check code meeting a preset rule is selected from the data check codes meeting the resource requirement, and the data is encoded, specifically comprising:
and selecting the data check code with the largest minimum code distance from the data check codes meeting the resource requirements, and coding the data.
8. A storage medium having stored therein instructions which, when read by a computer, cause the computer to execute the data verification encoding method according to any one of claims 1 to 7.
9. A data verification encoding system, comprising:
the communication unit is used for acquiring at least two data check codes and respectively determining the resource requirements of each data check code on the information source equipment and the information sink equipment;
the acquisition unit is used for acquiring the current resource occupation conditions of the information source equipment and the information sink equipment waiting for data transmission;
and the coding unit is used for selecting a data check code meeting a preset rule according to the resource requirement and the resource occupation condition and coding the data.
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