WO2016082385A1

WO2016082385A1 - Message transmission method, device, system and computer storage medium

Info

Publication number: WO2016082385A1
Application number: PCT/CN2015/074788
Authority: WO
Inventors: 陈杰; 汪波
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-11-25
Filing date: 2015-03-20
Publication date: 2016-06-02
Also published as: CN105703875B; CN105703875A

Abstract

Disclosed in an embodiment of the present invention are a message transmission method, device and system. The method comprises: a transmission terminal sets synchronization header data having a fixed number of bit, the synchronization header data being used to indicate a start of a message to be transmitted and a type of the message to be transmitted; according to a data value of the message to be transmitted, the transmission terminal executes a verification to obtain a verification value of the message to be transmitted; the transmission terminal takes the synchronization header data, the data value and the verification value of the message to be transmitted in sequence to compose serial data corresponding to the message to be transmitted, and transmits the serial data to a receiving terminal via a transmission line.

Description

Method, device, system and computer storage medium for message transmission

Technical field

The present invention relates to data communication transmission technologies, and in particular, to a method, device, system and computer storage medium for message transmission.

Background technique

Serial communication refers to a communication method in which message data is transmitted in bit order on a single transmission line. In an application scenario where message transmission efficiency is not high, serial communication can effectively save data transmission lines. In the case that the transmitting end and the receiving end do not have strict synchronization requirements in the respective clocks, the asynchronous serial communication is transmitted by the transmitting end frame by frame after the data is formed into the character frame, and is received by the receiving end frame by frame through a single transmission line, so that Avoid setting the clock line on the transmitter and receiver for clock synchronization.

However, at present, asynchronous serial communication not only has a complicated codec, but also needs to add too many information bits, that is, an additional overhead of message transmission, and usually asynchronous serial communication is only used for point-to-point message transmission.

Summary of the invention

In order to solve the existing technical problems, embodiments of the present invention are expected to provide a method, device, system, and computer storage medium for message transmission.

The technical solution of the embodiment of the present invention is implemented as follows:

In a first aspect, an embodiment of the present invention provides a message transmission method applied to a transmitting end, including:

The sending end sets a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate a start of a message to be transmitted and a type of the message to be transmitted;

The sending end performs verification according to the data value of the to-be-transmitted message, to obtain the to-be-transmitted The check value of the message;

The transmitting end sequentially forms the synchronization header data, the data value of the to-be-transmitted message, and the check value of the to-be-transmitted message into serial data corresponding to the to-be-transmitted message, and connects the serial through a transmission line. The data is transmitted to the receiving end.

The synchronization header data includes: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite; the bit number of the type bit The number of message types supported by the sender is determined.

The start bit lasts for M transmit clock cycles; each bit of the data value of the message to be transmitted and each bit of the check value last for N transmit clock cycles; the wait bit And each bit of the type bit lasts for K transmission clock cycles; wherein, M and N are integers greater than 1, and N is greater than M+2, and K is an integer greater than 2.

The method further includes:

The transmitting end transmits an idle bit opposite to the bit value of the start bit in a transmission interval between serial data of two data to be transmitted.

In a second aspect, an embodiment of the present invention provides a message transmission method applied to a receiving end, including:

When the receiving end monitors the synchronization header data of the serial data corresponding to the message to be transmitted, the message to be transmitted is determined to be a message that needs to be received according to the type of the message to be transmitted indicated by the synchronization header data; The serial data is composed of the synchronization header data, the data value of the to-be-transmitted message, and the check value sequence of the to-be-transmitted message;

After the receiving end determines that the message to be transmitted is a message that needs to be received by itself, sampling the data value of the to-be-transmitted message in the serial data and the check value of the to-be-transmitted message;

The receiving end verifies the data value of the to-be-transmitted message according to the check value of the to-be-transmitted message obtained by sampling;

After the verification is successful, the receiving end determines that the data value of the message to be transmitted is available. According to the value.

The synchronization header data includes: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite; and the start bit continues M transmission clock cycles; each of the data values of the message to be transmitted and each of the check values last for N transmission clock cycles; each of the wait bits and the type bits The bits all last for K transmission clock cycles; wherein, M and N are integers greater than 1, and N is greater than M+2, and K is an integer greater than 2.

The frequency of the sampling clock of the receiving end is the same as the frequency of the sending clock of the transmitting end;

The receiving end monitors the synchronization header data of the serial data corresponding to the message to be transmitted, including:

When the receiving end continuously receives the start bit value of the M sampling clock cycles, it determines that the synchronization header data of the serial data corresponding to the to-be-transmitted message is detected.

The receiving end determines, according to the type of the to-be-transmitted message that the synchronization header data indicates, that the to-be-transmitted message is a message that needs to be received by the receiving end, including:

The receiving end samples the type bit value of the synchronization header data to obtain the type of the message to be transmitted;

The receiving end matches the type of the message to be transmitted according to the type of the message that needs to be received by the receiving end;

When the matching is successful, the receiving end determines that the to-be-transmitted message is a message that it needs to receive.

The receiving end samples the type bit value of the synchronization header data to obtain the type of the message to be transmitted, including:

The receiving end selects, according to the value of the corresponding bit, the data value corresponding to the center beat in the K sampling clock cycles in which each bit of the type of the synchronization header data continues;

The receiving end determines the type of the message to be transmitted according to the correspondence between the type bit value of the synchronization header data and the preset type bit value and the message type.

The receiving end samples the data value of the to-be-transmitted message and the check value of the to-be-transmitted message in the serial data, including:

The receiving end selects a data value corresponding to the center beat in the N sampling clock periods of each of the data values of the to-be-transmitted message and the check value, and the value of the corresponding bit.

In a third aspect, an embodiment of the present invention provides a sending end, where the sending end includes: a setting unit, a check unit, a component unit, and a transmission unit, where

The setting unit is configured to set a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate a start of a message to be transmitted and a type of the message to be transmitted;

The checking unit is configured to perform verification according to the data value of the to-be-transmitted message, to obtain a check value of the to-be-transmitted message;

The component unit is configured to sequentially form the synchronization header data set by the setting unit, the data value of the to-be-transmitted message, and the check value of the to-be-transmitted message obtained by the verification unit to form the to-be-transmitted message. Corresponding serial data;

The transmission unit is configured to transmit serial data composed of the constituent units to a receiving end through a transmission line.

The transmission unit is further configured to transmit an idle bit opposite to a bit value of the start bit in a transmission interval between serial data of two data to be transmitted.

In a fourth aspect, an embodiment of the present invention provides a receiving end, where the receiving end includes: a monitoring unit, a determining unit, a sampling unit, and a check unit, where

The monitoring unit is configured to monitor synchronization header data of serial data corresponding to the message to be transmitted;

The determining unit is configured to determine, when the monitoring unit detects the synchronization header data of the serial data corresponding to the to-be-transmitted message, the to-be-transmitted according to the type of the to-be-transmitted message indicated by the synchronization header data The message is a message that the receiving end itself needs to receive; and the sampling unit is triggered after determining that the to-be-transmitted message is a message that the receiving end itself needs to receive; wherein the serial data is used by the synchronization header Data, the data value of the to-be-transmitted message, and the check value sequence of the to-be-transmitted message;

The sampling unit is configured to sample a data value of the to-be-transmitted message in the serial data and a check value of the to-be-transmitted message;

The checking unit is configured to check the data value of the to-be-transmitted message according to the check value of the to-be-transmitted message sampled by the sampling unit;

The determining unit is further configured to: after the verification unit successfully verifies, determine that the data value of the to-be-transmitted message is an available data value.

The synchronization header data includes: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite; and the start bit continues M transmission clock cycles; each of the data values of the message to be transmitted and each of the check values last for N transmission clock cycles; each of the wait bits and the type bits The bits all last for K transmission clock cycles; wherein M, N are integers greater than 1, and N is greater than M+2, and K is an integer greater than two.

Correspondingly, the monitoring unit is configured to, when configured to continuously receive the start bit values of the M sampling clock cycles, determine the synchronization header data of the serial data corresponding to the to-be-transmitted message.

The determining unit is configured to:

Instructing the sampling unit to sample a type bit value of the synchronization header data to obtain a type of the message to be transmitted;

And matching, according to the type of the message that needs to be received, the type of the message to be transmitted;

And, when the matching is successful, determining that the to-be-transmitted message is a message that needs to be received by itself.

The sampling unit is configured to select a data value corresponding to a center beat in a K sampling clock period in which each bit of the type of the synchronization header data continues for a value of a corresponding bit;

And determining a type of the message to be transmitted according to a correspondence between a type bit value of the synchronization header data and a preset type bit value and a message type.

The sampling unit is configured to select a data value corresponding to a center beat in each of the N sampling clock periods in which the data value of the message to be transmitted and the check value last for each bit is a value of a corresponding bit.

In a fifth aspect, an embodiment of the present invention provides a message transmission system, where the system includes a sending end and a receiving end, where

The sending end is configured to set a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate a start of a message to be transmitted and a type of the message to be transmitted;

And performing verification according to the data value of the to-be-transmitted message to obtain a check value of the to-be-transmitted message;

And, the synchronization header data, the data value of the to-be-transmitted message, and the check value of the to-be-transmitted message are sequentially formed into serial data corresponding to the to-be-transmitted message, and the serial data is transmitted through a transmission line. To the receiving end;

The receiving end is configured to: when the synchronization header data of the serial data corresponding to the message to be transmitted is monitored, determine, according to the type of the to-be-transmitted message indicated by the synchronization header data, that the to-be-transmitted message needs to be received by itself News

And determining, after the message to be transmitted is the message that the receiving end needs to receive, sampling the data value of the to-be-transmitted message in the serial data and the check value of the to-be-transmitted message;

And verifying, according to the sampled value of the to-be-transmitted message, the data value of the to-be-transmitted message;

And, after the verification is successful, determining that the data value of the message to be transmitted is an available data value.

The embodiment of the invention further provides a computer readable storage medium, the storage medium comprising a set of computer executable instructions for executing a message transmission method applied to a transmitting end.

The embodiment of the invention further provides a computer readable storage medium, the storage medium comprising a set of computer executable instructions for executing a message transmission method applied to a receiving end.

The embodiment of the invention provides a method, a device and a system for message transmission. In the process of asynchronous serial communication, a message to be transmitted is processed by a new codec method, so that in the process of message transmission, Reduces extra overhead and can also be used for point-to-multipoint messaging.

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present disclosure;

2 is a schematic flowchart of a method for message transmission according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a serial data waveform according to an embodiment of the present invention; FIG.

4 is a schematic flowchart of another method for message transmission according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another serial data waveform according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a sending end according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a receiving end according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a message transmission system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

The basic idea of the embodiment of the present invention is: in the process of asynchronous serial communication, the message to be transmitted is processed by a new codec method, so that in the process of message transmission, additional overhead is reduced, and Used for point-to-multipoint messaging.

Based on the above basic idea, referring to FIG. 1 , an application scenario provided by an embodiment of the present invention is shown. The transmitting end 10 and the three receiving ends 20, 30 and 40 are connected between the transmitting end 10 and each receiving end. Data is connected and transmitted through a single transmission line 50. In the embodiment of the present invention, the technical solution is described by using a single transmission line 50 and transmitting data between the transmitting end 10 and the single receiving end. The application scenario can be applied to the transmitting end 10 and other receiving ends. The data is transmitted between the embodiments of the present invention, and the present application is not limited to the specific embodiments of the present invention.

Referring to FIG. 2, a method flow of a message transmission according to an embodiment of the present invention is shown. The method is applied to a sending end, and the method includes:

S201: The sender sets a fixed number of synchronization header data, where the synchronization header data is used to indicate the start of the message to be transmitted and the type of the message to be transmitted;

The synchronization header data includes: a start bit, a wait bit, and a type bit; wherein, the start bit and the wait bit are both 1 bit and the bit value is opposite; the bit number of the type bit is supported by the sender to send the message type. Number determination

In this embodiment, the start bit lasts for M transmit clock cycles; each bit in the data value of the message to be transmitted and each bit in the check value last for N transmit clock cycles; wait bits and type bits Each bit lasts for K transmission clock cycles; wherein, in order to enable the receiving end to allow error sampling when detecting the start bit, M and N are integers greater than 1; and in order to distinguish the start bit of the message, Preferably, N is greater than M+2 and K is an integer greater than two.

It should be noted that, because the type of the message to be transmitted is indicated by the type bit in the synchronization header data, the receiving end may be configured to determine whether the message needs to be received by the receiving end according to the type of the message to be transmitted indicated by the type bit, thereby Data can be sent to multiple receiving ends on a single transmission line to achieve point-to-multipoint messaging.

S202: The sending end performs verification according to the data value of the message to be transmitted, and obtains a check value of the message to be transmitted.

It can be understood that the verification algorithm used by the transmitting end to perform verification according to the data value of the message to be transmitted may be a Cyclic Redundancy Check (CRC) check, or may be a checksum parity check. The other embodiment of the present invention is not specifically limited; the embodiment is preferably a CRC check.

S203: The transmitting end sequentially synchronizes the synchronization header data, the data value of the message to be transmitted, and the check value of the message to be transmitted into serial data corresponding to the message to be transmitted, and transmits the serial data to the receiving end through the transmission line.

When the message transmission rate is lower than the preset rate threshold, the transmitting end may set the transmission interval between the serial data for transmitting the data to be transmitted twice to be greater than the time for transmitting the serial data once, and the transmitting end may The transmission interval between the serial data of the secondary transmission data sets the idle time, thereby simplifying the design of the monitoring synchronization head at the receiving end, and avoiding the case where the receiving end mistakenly uses the data in the message as the synchronization header;

The method provided in this embodiment further includes: the sending end is in two, in order to be able to distinguish the serial data of the data to be transmitted, which is sent by the transmitting end, when the transmitting end has two idle data transmissions. The idle bit opposite to the bit value of the start bit is transmitted in the transmission interval between the serial data of the secondary transmission data. Understandably, when the transmitting end continuously transmits serial data, the transmitting end may not need to transmit idle bits.

In detail, referring to FIG. 3, an exemplary serial data waveform diagram sent by the transmitting end in the method flow of the message transmission shown in FIG. 2 is shown. As shown in FIG. 3, in the synchronization header data, the start bit is shown. In order to continue for 2 transmission clock cycles, a high level is indicated by a logic 1 in this embodiment; the wait bit is a low level lasting 5 transmission clock cycles, which is represented by a logic 0 in this embodiment; 3, indicating that the serial data shown in FIG. 3 can be used to represent 2 ³ = 8 data types, and each bit of the type bit also continues for 5 transmission clock cycles; each of the message to be transmitted and the check value The bit also lasts for 5 transmission cycles.

Based on the same technical concept of the foregoing embodiment, after the transmitting end transmits the serial data to the receiving end through the transmission line, referring to FIG. 4, it shows a method flow of another message transmission provided by the embodiment of the present invention, and the method is applied. At the receiving end, the method includes:

S401: When the receiving end monitors the synchronization header data of the serial data corresponding to the message to be transmitted, determining, according to the type of the message to be transmitted indicated by the synchronization header data, the message to be transmitted is a message that needs to be received by itself;

The serial data is composed of the synchronization header data, the data value of the message to be transmitted, and the check value of the message to be transmitted. In accordance with the synchronization header data in the foregoing embodiment, the synchronization header data includes: a start bit and a wait bit. And a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite; and the start bit lasts for M transmit clock cycles; each bit in the data value of the message to be transmitted and the check value Each bit in the bit lasts for N transmit clock cycles; each bit of the wait bit and the type bit lasts for K transmit clock cycles; wherein, M and N are integers greater than 1, and N is greater than M+2, K is an integer greater than 2.

Illustratively, the frequency of the sampling clock of the receiving end is the same as the frequency of the transmitting clock; correspondingly, the receiving end monitors the synchronization header data of the serial data corresponding to the message to be transmitted, including:

When the receiving end continuously receives the start bit value of the M sampling clock cycles, it determines that the synchronization header data of the serial data corresponding to the message to be transmitted is monitored.

The receiving end determines, according to the type of the to-be-transmitted message indicated by the synchronization header data, that the message to be transmitted is a message that needs to be received by itself, including:

And the receiving end matches the type of the message to be transmitted according to the type of the message that needs to be transmitted by the receiving end;

And, when the matching is successful, the receiving end determines that the message to be transmitted is a message that needs to be received by itself.

The receiving end samples the type bit value of the synchronization header data, and the type of the message to be transmitted includes: the receiving end can select the center point of the K sampling clock cycles in which each bit in the type of the synchronization header data continues. The data value is the value of the corresponding bit; then, the receiving end root Determining the type of the message to be transmitted according to the correspondence between the type bit value of the synchronization header data and the preset type bit value and the message type; it can be understood that the receiving end selects the center of the K sampling clock cycles in which the bit lasts. The corresponding data value is the value of the corresponding bit, which ensures that the data can be correctly sampled even if the clocks of the transmitting end and the receiving end are non-homologous clocks; and when K is even, the center takes K/2 shots. When K is an odd number, the center takes the (K+1)/2 beat.

It should be noted that, since the receiving end can determine whether the message to be transmitted in the serial data is a message that needs to be received according to the type of the message to be transmitted in the serial data, the transmitting end can transmit to multiple by using a single transmission line. The receiving end transmits the message, and the receiving end itself determines whether to receive according to the type of the message to be transmitted, thereby implementing point-to-multipoint message transmission.

S402: After the receiving end determines that the message to be transmitted is a message that needs to be received by itself, sampling the data value of the message to be transmitted in the serial data and the check value of the message to be transmitted;

It can be understood that when the receiving end determines that the message to be transmitted is not a message that needs to be received by itself, the serial data is directly discarded.

The receiving end samples the data value of the message to be transmitted in the serial data and the check value of the message to be transmitted, including:

The receiving end selects the data value of the message to be transmitted and the data value corresponding to the center beat in each of the N sampling clock periods in which each bit of the check value continues; it is understood that when N is even The center takes N/2 beats; when N is odd, the center takes the (N+1)/2 beats.

S403: The receiving end verifies the data value of the message to be transmitted according to the check value of the sampled message to be transmitted.

S404: After the verification succeeds, the receiving end determines that the data value of the message to be transmitted is an available data value;

It can be understood that if the verification is unsuccessful, the receiving end determines that the data value of the message to be transmitted in the serial data is not available, and discards the serial data.

In detail, referring to FIG. 5, which shows an exemplary serial data waveform diagram received by the receiving end in the method flow of the message transmission shown in FIG. 4, similar to FIG. 3, in the synchronization header data, the receiving end samples The sampling clock period of the start bit is 2 transmission clock cycles; the sampling clock period of the sampling wait bit of the receiving end is 5 transmission clock cycles; the number of bits of the type bit is 3, indicating that the serial data shown in FIG. 3 can be used for Representing 2 ³ = 8 data types, the sampling period of each bit of the type bit, the message to be transmitted, and the check value are also 5 transmission clock cycles, and the data value corresponding to the center beat is The third beat data value of the five transmission periods is indicated by a broken line in the figure.

The message transmission method provided in the foregoing embodiment, in the process of asynchronous serial communication, processes a message to be transmitted through a new codec method, thereby reducing additional overhead in the process of message transmission, and Used for point-to-multipoint messaging.

Based on the same technical concept of the foregoing embodiment, referring to FIG. 6, a structure of a transmitting end 60 according to an embodiment of the present invention is provided, including a setting unit 601, a check unit 602, a component unit 603, and a transmission unit 604. ,

The setting unit 601 is configured to set a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate the start of the message to be transmitted and the type of the message to be transmitted;

The verification unit 602 is configured to perform verification according to the data value of the message to be transmitted, and obtain a check value of the message to be transmitted.

The component unit 603 is configured to sequentially form the synchronization header data set by the setting unit 601, the data value of the message to be transmitted, and the check value of the message to be transmitted obtained by the check unit 602 into serial data corresponding to the message to be transmitted;

The transmission unit 604 is configured to transmit the serial data composed of the constituent units 603 to the receiving end through the transmission line.

Illustratively, the synchronization header data includes: a start bit, a wait bit, and a type bit; wherein, the start bit and the wait bit are both 1 bit and the bit value is opposite; the bit number of the type bit is supported by the sender. The number of message types is determined.

The start bit lasts for M transmit clock cycles; each bit in the data value of the message to be transmitted and each bit in the check value last for N transmit clock cycles; each bit of the wait bit and the type bit continues K transmit clock cycles; where M and N are integers greater than 1, and N Greater than M+2, K is an integer greater than 2.

The transmission unit 604 is further configured to transmit an idle bit opposite to the bit value of the start bit in a transmission interval between serial data of two data to be transmitted.

The transmitting end 60 provided in this embodiment encodes a message to be transmitted through a new encoding and decoding method in the process of asynchronous serial communication, thereby reducing additional overhead in the process of message transmission, and also capable of reducing additional overhead. Used for point-to-multipoint messaging.

It should be noted that the foregoing setting unit 601, the verification unit 602, the component unit 603, and the transmission unit 604 may be implemented by a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field at the transmitting end. Programming Gate Array (FPGA) implementation.

The structure of the receiving end 70 according to the embodiment of the present invention includes: a monitoring unit 701, a determining unit 702, a sampling unit 703, and a checking unit 704, based on the same technical concept of the foregoing embodiment. among them,

The monitoring unit 701 is configured to monitor synchronization header data of the serial data corresponding to the message to be transmitted;

The determining unit 702 is configured to: when the monitoring unit 701 monitors the synchronization header data of the serial data corresponding to the message to be transmitted, determine, according to the type of the message to be transmitted indicated by the synchronization header data, the message to be transmitted is a message that the receiving end 70 needs to receive. And when determining that the message to be transmitted is a message that the receiving end 70 itself needs to receive, triggering the sampling unit 703; wherein the serial data is composed of the synchronization header data, the data value of the message to be transmitted, and the check value sequence of the message to be transmitted;

The sampling unit 703 is configured to sample the data value of the message to be transmitted in the serial data and the check value of the message to be transmitted;

The checking unit 704 is configured to check, according to the check value of the message to be transmitted sampled by the sampling unit 703, the data value of the message to be transmitted;

The determining unit 702 is further configured to determine that the data value of the message to be transmitted is an available data value after the verification unit 704 successfully verifies.

Illustratively, the sync header data includes: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite; and the start bit continues for M transmit clocks a period; each bit in the data value of the message to be transmitted and each bit in the check value last for N transmission clock cycles; each bit of the wait bit and the type bit lasts for K transmission clock cycles; M and N are integers greater than 1, and N is greater than M+2, and K is an integer greater than 2.

The sampling clock of the receiving end has the same frequency as the transmitting clock of the transmitting end;

Correspondingly, when the monitoring unit 701 is configured to continuously receive the start bit values of the M sampling clock cycles, it is determined that the synchronization header data of the serial data corresponding to the message to be transmitted is monitored.

The determining unit 702 is configured to:

Instructing the sampling unit 703 to sample the type bit value of the synchronization header data to obtain the type of the message to be transmitted;

And matching the type of the message that needs to be received according to the type of the message to be transmitted;

And, when the matching is successful, it is determined that the message to be transmitted is a message that needs to be received by itself.

The sampling unit 703 is configured to select a data value corresponding to a central beat of the K sampling clock cycles in each of the type bits of the synchronization header data, and a value of the corresponding bit;

And determining the type of the message to be transmitted according to the correspondence between the type bit value of the synchronization header data and the preset type bit value and the message type.

The sampling unit 703 is configured to select a data value corresponding to a central beat in each of the N sample clock periods in which the data value of the message to be transmitted and the check value persist for each bit, and the value of the corresponding bit.

The receiving end 70 provided in this embodiment decodes the message to be transmitted by a new codec method in the process of asynchronous serial communication, thereby reducing additional overhead in the process of message transmission, and also capable of reducing additional overhead. Used for point-to-multipoint messaging.

It should be noted that the foregoing monitoring unit 701, the determining unit 702, the sampling unit 703, and the checking unit 704 may be implemented by a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field at the receiving end. Programming Gate Array (FPGA) implementation.

Based on the same technical concept of the above embodiment, referring to FIG. 8, a structure of a message transmission system 80 according to an embodiment of the present invention is shown. The system 80 includes a transmitting end 60 and a receiving end 70, where

The sending end 60 is configured to set a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate the start of the message to be transmitted and the type of the message to be transmitted;

And performing verification according to the data value of the message to be transmitted, and obtaining a check value of the message to be transmitted;

And the synchronization header data, the data value of the message to be transmitted and the check value of the message to be transmitted are sequentially composed of the serial data corresponding to the message to be transmitted, and the serial data is transmitted to the receiving end 70 through the transmission line;

The receiving end 70 is configured to: when the synchronization header data of the serial data corresponding to the message to be transmitted is monitored, determine, according to the type of the message to be transmitted indicated by the synchronization header data, that the message to be transmitted is a message that needs to be received by itself;

And, after determining that the message to be transmitted is a message that the receiving end 70 itself needs to receive, sampling the data value of the message to be transmitted in the serial data and the check value of the message to be transmitted;

And verifying, according to the check value of the sampled message to be transmitted, the data value of the message to be transmitted;

And, when the verification is successful, determining that the data value of the message to be transmitted is an available data value.

The message transmission system 80 provided in this embodiment processes the message to be transmitted through a new codec method in the process of asynchronous serial communication, thereby reducing the extra overhead in the process of message transmission, and also Can be used for point-to-multipoint messaging.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the present invention may employ computer-usable storage media (including but not limited to disks) in one or more of the computer-usable program code embodied therein. A form of computer program product embodied on a memory and optical storage, etc.).

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

A message transmission method, the method is applied to a sender, and the method includes:

The sending end sets a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate a start of a message to be transmitted and a type of the message to be transmitted;

The sending end performs verification according to the data value of the to-be-transmitted message, and obtains a check value of the to-be-transmitted message;

The transmitting end sequentially forms the synchronization header data, the data value of the to-be-transmitted message, and the check value of the to-be-transmitted message into serial data corresponding to the to-be-transmitted message, and connects the serial through a transmission line. The data is transmitted to the receiving end.
The method of claim 1, wherein the sync header data comprises: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite The number of bits of the type bits is determined by the number of message types supported by the sender.
The method of claim 2, wherein the start bit lasts for M transmit clock cycles; each bit of the data value of the message to be transmitted and each bit of the check value lasts for N Transmitting a clock cycle; each bit of the wait bit and the type bit lasts for K transmit clock cycles; wherein, M and N are integers greater than 1, and N is greater than M+2, and K is greater than 2 The integer.
The method of claim 2, wherein the method further comprises:

The transmitting end transmits an idle bit opposite to the bit value of the start bit in a transmission interval between serial data of two data to be transmitted.
A message transmission method, the method is applied to a receiving end, and the method includes:

When the receiving end monitors the synchronization header data of the serial data corresponding to the message to be transmitted, the message to be transmitted is determined to be a message that needs to be received according to the type of the message to be transmitted indicated by the synchronization header data; Serial data from the synchronization header data, the to-be-transmitted The data value of the message is composed of the check value sequence of the message to be transmitted;

After the receiving end determines that the message to be transmitted is a message that needs to be received by itself, sampling the data value of the to-be-transmitted message in the serial data and the check value of the to-be-transmitted message;

The receiving end verifies the data value of the to-be-transmitted message according to the check value of the to-be-transmitted message obtained by sampling;

After the verification is successful, the receiving end determines that the data value of the message to be transmitted is an available data value.
The method of claim 5, wherein the sync header data comprises: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite And, the start bit lasts for M transmit clock cycles; each bit of the data value of the message to be transmitted and each bit of the check value last for N transmit clock cycles; the wait Each bit of the bit and the type bit lasts for K transmit clock cycles; wherein M, N are integers greater than 1, and N is greater than M+2, and K is an integer greater than two.
The method according to claim 6, wherein the frequency of the sampling clock of the receiving end is the same as the frequency of the transmitting clock of the transmitting end;

The receiving end monitors the synchronization header data of the serial data corresponding to the message to be transmitted, including:

When the receiving end continuously receives the start bit value of the M sampling clock cycles, it determines that the synchronization header data of the serial data corresponding to the to-be-transmitted message is detected.
The method according to claim 7, wherein the receiving end determines, according to the type of the to-be-transmitted message indicated by the synchronization header data, that the message to be transmitted is a message that needs to be received by itself, including:

The receiving end samples the type bit value of the synchronization header data to obtain the type of the message to be transmitted;

The type of the message to be transmitted by the receiving end according to the type of the message to be transmitted Matching;

When the matching is successful, the receiving end determines that the to-be-transmitted message is a message that it needs to receive.
The method according to claim 8, wherein the receiving end samples the type bit value of the synchronization header data to obtain the type of the message to be transmitted, including:

The receiving end selects, according to the value of the corresponding bit, the data value corresponding to the center beat in the K sampling clock cycles in which each bit of the type of the synchronization header data continues;

The receiving end determines the type of the message to be transmitted according to the correspondence between the type bit value of the synchronization header data and the preset type bit value and the message type.
The method according to claim 7, wherein the receiving end samples the data value of the message to be transmitted and the check value of the message to be transmitted in the serial data, including:

The receiving end selects a data value corresponding to the center beat in the N sampling clock periods of each of the data values of the to-be-transmitted message and the check value, and the value of the corresponding bit.
a transmitting end, the sending end includes: a setting unit, a check unit, a component unit, and a transmission unit, where

The setting unit is configured to set a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate a start of a message to be transmitted and a type of the message to be transmitted;

The checking unit is configured to perform verification according to the data value of the to-be-transmitted message, to obtain a check value of the to-be-transmitted message;

The component unit is configured to sequentially form the synchronization header data set by the setting unit, the data value of the to-be-transmitted message, and the check value of the to-be-transmitted message obtained by the verification unit to form the to-be-transmitted message. Corresponding serial data;

The transmission unit is configured to transmit serial data composed of the constituent units to a receiving end through a transmission line.
The transmitting end according to claim 11, wherein the synchronization header data comprises: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value is opposite; the bit number of the type bit is supported by the sender to send the message The number of types is determined.
The transmitting end according to claim 12, wherein said start bit lasts for M transmission clock cycles; each bit of said data value of said message to be transmitted and each bit of said check value continues N transmit clock cycles; each bit of the wait bit and the type bit lasts for K transmit clock cycles; wherein, M and N are integers greater than 1, and N is greater than M+2, and K is greater than An integer of 2.
The transmitting end according to claim 12, wherein said transmitting unit is further configured to transmit a free bit opposite to a bit value of said start bit in a transmission interval between serial data of two data to be transmitted .
a receiving end, the receiving end includes: a monitoring unit, a determining unit, a sampling unit, and a check unit, where

The monitoring unit is configured to monitor synchronization header data of serial data corresponding to the message to be transmitted;

The determining unit is configured to determine, when the monitoring unit detects the synchronization header data of the serial data corresponding to the to-be-transmitted message, the to-be-transmitted according to the type of the to-be-transmitted message indicated by the synchronization header data The message is a message that the receiving end itself needs to receive; and the sampling unit is triggered after determining that the to-be-transmitted message is a message that the receiving end itself needs to receive; wherein the serial data is used by the synchronization header Data, the data value of the to-be-transmitted message, and the check value sequence of the to-be-transmitted message;

The sampling unit is configured to sample a data value of the to-be-transmitted message in the serial data and a check value of the to-be-transmitted message;

The checking unit is configured to check the data value of the to-be-transmitted message according to the check value of the to-be-transmitted message sampled by the sampling unit;

The determining unit is further configured to: after the verification unit successfully verifies, determine the to-be-determined The data value of the transmitted message is the available data value.
The receiving end according to claim 15, wherein the synchronization header data comprises: a start bit, a wait bit, and a type bit; wherein the start bit and the wait bit are both 1 bit and the bit value Conversely; and the start bit lasts for M transmit clock cycles; each bit of the data value of the message to be transmitted and each bit of the check value lasts for N transmit clock cycles; Each bit of the wait bit and the type bit lasts for K transmit clock cycles; wherein M, N are integers greater than 1, and N is greater than M+2, and K is an integer greater than two.
The receiving end according to claim 16, wherein a frequency of a sampling clock of the receiving end is the same as a frequency of a transmitting clock of the transmitting end;

Correspondingly, the monitoring unit is configured to, when configured to continuously receive the start bit values of the M sampling clock cycles, determine the synchronization header data of the serial data corresponding to the to-be-transmitted message.
The receiving end according to claim 17, wherein the determining unit is configured to instruct the sampling unit to sample a type bit value of the synchronization header data to obtain a type of the message to be transmitted;

And matching, according to the type of the message that needs to be received, the type of the message to be transmitted;

And, when the matching is successful, determining that the to-be-transmitted message is a message that needs to be received by itself.
The receiving end according to claim 18, wherein the sampling unit is configured to select a data value corresponding to a center beat in a K sampling clock period in which each bit of the type of the synchronization header data continues The value of the bit;

And determining a type of the message to be transmitted according to a correspondence between a type bit value of the synchronization header data and a preset type bit value and a message type.
The receiving end according to claim 17, wherein the sampling unit is configured to select a center point in the N sampling clock periods in which the data value of the message to be transmitted and the check value last for each of the N sampling clock periods The data value is the value of the corresponding bit.
A message transmission system, the system comprising a transmitting end and a receiving end, wherein

The sending end is configured to set a synchronization bit data of a fixed number of bits; wherein the synchronization header data is used to indicate a start of a message to be transmitted and a type of the message to be transmitted;

And performing verification according to the data value of the to-be-transmitted message to obtain a check value of the to-be-transmitted message;

And, the synchronization header data, the data value of the to-be-transmitted message, and the check value of the to-be-transmitted message are sequentially formed into serial data corresponding to the to-be-transmitted message, and the serial data is transmitted through a transmission line. To the receiving end;

The receiving end is configured to: when the synchronization header data of the serial data corresponding to the message to be transmitted is monitored, determine, according to the type of the to-be-transmitted message indicated by the synchronization header data, that the to-be-transmitted message needs to be received by itself News

And determining, after the message to be transmitted is the message that the receiving end needs to receive, sampling the data value of the to-be-transmitted message in the serial data and the check value of the to-be-transmitted message;

And verifying, according to the sampled value of the to-be-transmitted message, the data value of the to-be-transmitted message;

And, after the verification is successful, determining that the data value of the message to be transmitted is an available data value.
A computer readable storage medium comprising a set of computer executable instructions for performing a message transmission method applied to a transmitting end.
A computer readable storage medium comprising a set of computer executable instructions for performing a message transmission method applied to a receiving end.