CN111628846A - Method for improving data transmission efficiency - Google Patents

Method for improving data transmission efficiency Download PDF

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CN111628846A
CN111628846A CN202010362128.8A CN202010362128A CN111628846A CN 111628846 A CN111628846 A CN 111628846A CN 202010362128 A CN202010362128 A CN 202010362128A CN 111628846 A CN111628846 A CN 111628846A
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command
sent
format
data
commands
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CN111628846B (en
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方加强
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Huizhou Desay SV Automotive Co Ltd
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Huizhou Desay SV Automotive Co Ltd
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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
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • 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
    • H04L69/04—Protocols for data compression, e.g. ROHC

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

The invention relates to a method for improving data transmission efficiency, which comprises the following steps: s1, acquiring the information of the number, length or type of the commands to be sent; s2, packaging the command to be sent according to the acquired information and a preset program to obtain a sending package; the format of the sending packet comprises one of a common format or an efficient format, wherein the common format comprises a command ID and n data segments; the efficient format includes a command ID, n data segments, and valid identification bits. The invention can be compatible with the existing communication mode and supports the transmission of a single command compression mode and a compound command mode; for a single communication command, a compression mode can be adopted for transmission, only the changed parameters are transmitted, and the transmission efficiency is improved; for a plurality of communication commands, the plurality of commands can be combined into one command transmission to reduce the number of communication times.

Description

Method for improving data transmission efficiency
Technical Field
The invention relates to the technical field of electronics, in particular to a method for improving data transmission efficiency.
Background
As embedded products become powerful, product requirements can be met only by adopting a multi-chip scheme, cooperation among multiple chips is completed through exchange of a large amount of data (commands), and each data transmission needs to be started, transmitted and finished. Therefore, if a plurality of commands need to be sent, the sending end corresponding to the chip needs to be started and ended frequently, which affects the efficiency of data exchange, and the size of the data volume also affects the efficiency of data exchange during sending, which has a large influence on the operation load capacity of the whole system, and the improvement of the efficiency of data exchange has great significance for improving the operation efficiency of the system, the reliability of the system and the performance of the product.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a method for improving data transmission efficiency, which comprises the following steps:
s1, acquiring the information of the number, length or type of the commands to be sent;
s2, packaging the command to be sent according to the acquired information and a preset program to obtain a sending package;
the format of the sending packet comprises one of a common format or an efficient format, wherein the common format comprises a command ID and n data segments; the efficient format comprises a command ID, n data segments and a valid identification bit; and n is a positive integer greater than 2.
Further, the steps S1 and S2 specifically include:
SA1, acquiring the number p' of commands to be sent;
SA2, when the number P 'is greater than the preset value P, the ID of the command to be sent is represented by the command ID in high efficiency format and the effective identification bit, and the data segment of P' commands to be sent is assigned to the data segment in high efficiency format to obtain the sending packet.
Further, in the step SA2, the ID of the command to be sent is represented by the command ID in the efficient format and the valid identification bit, and the data segment of the command to be sent is assigned to the data segment in the efficient format, which specifically includes:
SA21, selecting one command ID to be sent, assigning the ID to the command ID in efficient format, and sending the command ID to be sentThe sending command is a reference command, other commands to be sent are represented as the ID + i commands, and then the corresponding valid identification bit x is usediSetting to a valid position;
SA22, according to command ID and valid identification bit xmAnd assigning the data segments of the commands to be sent to the data segments in the efficient format in sequence.
Further, the steps S1 and S2 specifically include:
SB1, acquiring the type of the command to be sent;
SB2, if the type of the command to be sent is different from the type of the command to be sent, directly using the command to be sent as a sending packet, otherwise assigning the ID of the command to be sent to the command ID in the efficient format;
SB3, comparing the data segment of the command to be sent with the data segment of the command sent, finding out different data segments and setting the corresponding effective identification position of the high-efficiency format as the effective bit until all the data segments are compared; after the different data segments of the command to be sent are found, they are assigned to the data segments in the efficient format.
Further, before assigning the ID of the command to be sent to the command ID in the efficient format in step SB2, the method further includes:
SC1, obtaining the length q' of the command to be sent;
and SC2, when the length Q' is smaller than the preset value Q, directly taking the command to be sent as a sending packet.
Further, the specific steps of step SB3 include:
SB31, comparing the a-segment data segment of the command to be sent with the a-segment data segment of the command already sent, and when the j-th segment data segment of the command to be sent is different from the j-th segment of the command already sent, the corresponding valid identification bit x is usedjSetting to be a valid bit, and assigning the j section data section of a command to be sent to the data section with the efficient format;
and SB32, when the value of j is equal to the value of a, finishing the packaging of the command to be sent and obtaining a sending package.
Further, the efficient format further includes a format identification bit, where the format identification bit is used to distinguish whether the data in the efficient format is in a compressed format or a composite format, and the steps S1 and S2 specifically include:
SD1, initialization format identification bit, command ID, valid identification bit and n data segments;
SD2, acquiring the number P 'of commands to be sent, entering into a step SD3 when the number P' is greater than a preset value P, and otherwise, entering into a step SD 6;
SD3, setting the format identification position as a composite format valid bit;
SD4, selecting the ID of one command in the commands to be sent, assigning the ID to the command ID in the efficient format, taking the command to be sent as a reference command, representing other commands to be sent as ID + i commands, and then, representing the corresponding valid identification bit xiSetting to a valid position;
SD5, based on command ID and valid identification bit xmAssigning the data segments of the commands to be sent to the data segments with the efficient format in sequence, and entering the step SD 13;
SD6, obtaining the length Q 'of the command to be sent, entering into a step SD7 when the length Q' is larger than a preset value Q, and otherwise, entering into a step SD 12;
SD7, obtaining the type of the command to be sent, if the type of the sent command is the same as the type of the command to be sent, entering SD8, otherwise, entering SD 12;
SD8, setting the format identification position as a compression format valid bit;
SD9, assigning the ID of the command to be sent to the command ID in the efficient format;
SD10, comparing the a-segment data segment of the command to be sent with the a-segment data segment of the command already sent, and when the j-th segment data segment of the command to be sent is different from the j-th segment of the command already sent, the corresponding valid identification bit x is usedjSetting to be a valid bit, and assigning the j section data section of a command to be sent to the data section with the efficient format;
SD11, when the value of j is equal to the value of a, go to step SD 13;
SD12, directly taking the command to be sent as a sending packet;
and SD13, completing the packaging of the command to be sent and obtaining a sending package.
Further, the common format is that a command ID and n data segments are sequentially arranged, and the efficient format is that a format identification bit, a command ID, an effective identification bit and n data segments are sequentially arranged.
Further, before the step S1, the method further includes:
the efficient format is initialized.
Further, the format identification bits occupy 2 bits, which are b1 and b2, respectively, the effective identification bits occupy m bits, and m is a positive integer greater than 2.
The invention has the following beneficial effects:
1. compatible with the existing communication mode, and simultaneously supports the transmission of a single command compression mode and a compound command mode;
2. for a single communication command, a compression mode can be adopted for transmission, only the changed parameters are transmitted, and the transmission efficiency is improved;
3. for a plurality of communication commands, the plurality of commands can be combined into one command for transmission, so that the communication times are reduced;
4. this approach can be used for different types of communication requiring information exchange.
Drawings
FIG. 1 is a diagram illustrating a general format of a transmit packet according to the present invention;
FIG. 2 is a schematic diagram of the structure of the efficient format of the transmit packet according to the present invention;
fig. 3 is a transmission packet in a composite format according to embodiment 1 of the present invention;
FIG. 4 is a diagram of a compressed format of a transmission packet according to embodiment 2 of the present invention;
FIG. 5 is a flowchart illustrating an embodiment of a method for improving data transmission efficiency according to the present invention;
fig. 6 shows a transmission packet in a composite format according to embodiment 3 of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand for those skilled in the art and will therefore make the scope of the invention more clearly defined. In the following embodiments, the format of a transmission packet in the method for improving data transmission efficiency is shown with reference to fig. 1 and 2. The format of the sending packet comprises one of a common format or an efficient format, wherein the common format comprises a command ID and n data segments; the efficient format comprises a command ID, n data segments and a valid identification bit; and n is a positive integer greater than 2.
Example 1:
the method for improving the data transmission efficiency in the embodiment comprises the following steps:
SA1, acquiring the number p' of commands to be sent;
SA2, when the number P' is greater than the preset value P, selecting an ID of one command in the commands to be sent to assign to a command ID in a high-efficiency format, taking the command to be sent as a reference command, representing other commands to be sent as ID + i commands, and then setting the corresponding effective identification position xi as an effective position;
SA3, according to command ID and valid identification bit xmAnd assigning the data segments of the commands to be sent to the data segments with the efficient format in sequence, completing the packaging of the commands to be sent and obtaining sending packages.
In implementation, the preset value P may be set to 1, and when there are 2 commands to be sent, the data needs to be sent in the composite format, so as to achieve the purpose of improving the data transmission efficiency. Assuming that the command to be sent is the 7 th command with two data segments and the 10 th command with three data segments, respectively, and the 7 th command can be a reference command, the 10 th command is represented as the ID +3 th command, and the valid bit is set to 1, then the packed transmission packet can be shown in fig. 3.
Example 2:
the method for improving the data transmission efficiency in the embodiment comprises the following steps:
SB1, acquiring the type of the command to be sent;
SB2, if the type of the command to be sent is different from the type of the command to be sent, directly using the command to be sent as a sending packet, otherwise assigning the ID of the command to be sent to the command ID in the efficient format;
SB3. comparing the a-segment data segment of the command to be sent with the a-segment data segment of the command already sent, and when the j-th segment data segment of the command to be sent is different from the j-th segment data segment of the command already sent, corresponding effective identification bits xjSetting to valid bit, assigning j section data section of command to be sent to data section in efficient format (or comparing all data sections, and then according to command ID and x)mAssigning the data segments of the commands to be sent to the data segments with the efficient format in sequence);
and SB4, when the value of j is equal to the value of a, finishing the packaging of the command to be sent and obtaining a sending package.
Assuming that the command to be sent is the 10 th command with three data segments, and the 10 th command has been sent before, but the second data segment of the 10 th command is different from the previous one, the data can be sent in a compressed format to achieve the purpose of improving the data transmission efficiency, the valid bit is set to 1, and the packed sending packet can be shown in fig. 4. In addition, in this embodiment, before assigning the ID of the command to be sent to the command ID in the efficient format in step SB2, a step of determining the length of the command to be sent may be further provided, so as to better use the compression format:
SC1, obtaining the length q' of the command to be sent;
and SC2, when the length Q' is smaller than the preset value Q, directly taking the command to be sent as a sending packet.
Example 3:
referring to the flowchart of fig. 5, the method for improving data transmission efficiency in this embodiment includes the following steps:
SD1, initialization format identification bit, command ID, valid identification bit and n data segments;
SD2, acquiring the number P 'of commands to be sent, entering into a step SD3 when the number P' is greater than a preset value P, and otherwise, entering into a step SD 6;
SD3, setting the format identification position as a composite format valid bit;
SD4, selecting one command ID in the commands to be sent, assigning the ID to the command ID in the efficient format, and taking the command to be sent as the basisQuasi-command, other commands to be sent are represented as ID + i commands, and then corresponding valid identification bits x are representediSetting to a valid position;
SD5, based on command ID and valid identification bit xmAssigning the data segments of the commands to be sent to the data segments with the efficient format in sequence, and entering the step SD 13;
SD6, obtaining the length Q 'of the command to be sent, entering into a step SD7 when the length Q' is larger than a preset value Q, and otherwise, entering into a step SD 12;
SD7, obtaining the type of the command to be sent, if the type of the sent command is the same as the type of the command to be sent, entering SD8, otherwise, entering SD 12;
SD8, setting the format identification position as a compression format valid bit;
SD9, assigning the ID of the command to be sent to the command ID in the efficient format;
SD10, comparing the a-segment data segment of the command to be sent with the a-segment data segment of the command already sent, and when the j-th segment data segment of the command to be sent is different from the j-th segment of the command already sent, the corresponding valid identification bit x is usedjSetting a valid bit, assigning the j-th section of the command to be sent to the data section in the efficient format (or assigning the data section of the command to be sent to the data section in the efficient format according to the valid bits of the valid identification bits after all the data sections are compared);
SD11, when the value of j is equal to the value of a, go to step SD 13;
SD12, directly taking the command to be sent as a sending packet;
and SD13, completing the packaging of the command to be sent and obtaining a sending package.
For initialization, the format flag, the command ID, the valid flag, and the initialization of n data segments may all be set to 0; 2 bits can be distributed to format identification bits which are b1 and b2 respectively, m bits are distributed to effective identification bits which are x1, x2, … … and xm respectively, and m is a positive integer larger than 2; when b 1-1 and b 2-0 indicate that the transmission packet is transmitted in a compressed format, x is the same as x j0 represents a command that the ith data segment remains unchanged,not transmitted, xj1 represents that the ith data segment is commanded to change, the ith data segment is transmitted, and the transmitted data segments are arranged according to the sequence of the changed data segments; b 1-1, b 2-1 indicates that the transmission packet is transmitted in a composite format, and x is the same as x i0 stands for this bit ignore, not taken into account, xi1 represents that the compound command contains an ID + i command, and contains data segments, which are arranged in order by the containing command size and the corresponding data segment. When the preset value P is set to 1, if there are a 7 th command with two data segments and a 10 th command with three data segments for the command to be sent, respectively, b1 and b2 are set to 1, and then the 7 th command can be used as a reference command, the 10 th command is represented as an ID +3 th command, and the valid bit is set to 1, so that the packed transmission packet can be shown in fig. 6. In addition, in the above method, for the compression of a single command, the type comparison is necessary, the length comparison may not be necessary, and the type comparison and the length comparison are not in sequence, and the same judgment of the number of commands, the type comparison of the commands, and the length comparison of the commands are also not in sequence, as long as the purpose of the present invention is achieved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (4)

1. A method for improving data transmission efficiency, comprising the steps of:
s1, acquiring the information of the number, length or type of the commands to be sent;
s2, packaging the command to be sent according to the acquired information and a preset program to obtain a sending package;
the format of the sending packet comprises one of a common format or an efficient format, wherein the common format comprises a command ID and n data segments; the efficient format comprises a command ID, n data segments, a valid identification bit and a format identification bit; n is a positive integer greater than 2;
the format identification bits are used to distinguish whether the data in the efficient format is in a compressed format or a composite format, and the steps S1 and S2 specifically include:
SD1, initialization format identification bit, command ID, valid identification bit and n data segments;
SD2, acquiring the number P 'of commands to be sent, entering into a step SD3 when the number P' is greater than a preset value P, and otherwise, entering into a step SD 6;
SD3, setting the format identification position as a composite format valid bit;
SD4, selecting the ID of one command in the commands to be sent, assigning the ID to the command ID in the efficient format, taking the command to be sent as a reference command, representing other commands to be sent as ID + i commands, and then, representing the corresponding valid identification bit xiSetting to a valid position; SD5, based on command ID and valid identification bit xmAssigning the data segments of the commands to be sent to the data segments with the efficient format in sequence, and entering the step SD 13;
SD6, obtaining the length Q 'of the command to be sent, entering into a step SD7 when the length Q' is larger than a preset value Q, and otherwise, entering into a step SD 12;
SD7, obtaining the type of the command to be sent, if the type of the sent command is the same as the type of the command to be sent, entering SD8, otherwise, entering SD 12;
SD8, setting the format identification position as a compression format valid bit;
SD9, assigning the ID of the command to be sent to the command ID in the efficient format;
SD10, comparing the a-segment data segment of the command to be sent with the a-segment data segment of the command already sent, and when the j-th segment data segment of the command to be sent is different from the j-th segment of the command already sent, the corresponding valid identification bit x is usedjSetting to be a valid bit, and assigning the j section data section of a command to be sent to the data section with the efficient format;
SD11, when the value of j is equal to the value of a, go to step SD 13;
SD12, directly taking the command to be sent as a sending packet;
and SD13, completing the packaging of the command to be sent and obtaining a sending package.
2. The method according to claim 1, wherein the normal format is sequentially configured by a command ID and n data segments, and the high efficiency format is sequentially configured by a format identification bit, a command ID, a valid identification bit, and n data segments.
3. The method for improving data transmission efficiency according to claim 1, further comprising, before the step S1:
the efficient format is initialized.
4. The method of claim 1, wherein the format indicator bit occupies 2 bits, namely b1 and b2, and the effective indicator bit occupies m bits, wherein m is a positive integer greater than 2.
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