WO2023024720A1

WO2023024720A1 - Data transmission method and system, integrated circuit, multi-chip structure, and electronic device

Info

Publication number: WO2023024720A1
Application number: PCT/CN2022/104193
Authority: WO
Inventors: 杨巍
Original assignee: 北京希姆计算科技有限公司
Priority date: 2021-08-27
Filing date: 2022-07-06
Publication date: 2023-03-02
Also published as: CN115733577A

Abstract

The present disclosure relates to the technical field of data transmission, and discloses a data transmission method and system, an integrated circuit, a multi-chip structure, and an electronic device. The method comprises: receiving first data; assigning a first serial number to the first data, wherein the first serial number corresponds to the first data; generating a first data packet on the basis of the first data and the first serial number; sending the first data packet and saving the first data packet. According to the present disclosure, there is no need to add an additional check digit in first data to be sent, and likewise no need to carry out complex re-packaging, thereby simplifying sending logic, reducing occupation by invalid bandwidth, and shortening a system delay. In addition, when an error occurs during the data sending process, the saved first data packet may be directly retransmitted, thereby establishing an efficient data retransmission mechanism when data transmission errors occur, ensuring the correct transmission of data, and improving the data transmission speed and quality.

Description

Data transmission method, system, integrated circuit, multi-chip structure and electronic device

This application claims the priority of the Chinese patent application with the application number 202110998606.9 and the title of the invention "data transmission method, system, integrated circuit, multi-chip structure and electronic equipment" filed on August 27, 2021, the entire content of which is passed References are incorporated in this application.

technical field

The present application relates to the technical field of data transmission, in particular to a data transmission method, system, integrated circuit, multi-chip structure and electronic equipment.

Background technique

With the rapid development of artificial intelligence, human beings are entering the era of comprehensive intelligence. In this context, the amount of data that the corresponding hardware devices need to process is increasing, and the demand for hardware computing power is also getting stronger. Chips are the core components of hardware devices. The technology and computing power of the chip determine the upper limit of data processing of the hardware product. With the development of Moore's Law, chip design and manufacturing are getting closer and closer to the limit of Moore's Law, but the demand for hardware data processing is still rising. Therefore, chip miniaturization and multi-die (bare chip) packaging have gradually become the hardware design trend for processing big data in the future.

The existing multi-die chip structure is shown in Figure 1, wherein die0 and die1 are two bare chips inside the packaged chip CHIP, each of which mainly includes SoC (System on Chip, system on chip) logic and d2d subsys ( die to die subsystem, die to die subsystem) logic, data transmission and communication between two die through d2d subsys. d2d subsys usually contains controller digital circuit logic (d2d controller) and analog physical logic (d2d phy). The analog physical logic will have BER (Bit error rate) phenomenon in high-speed data transmission, that is, it cannot guarantee that the transmitted data is 100% correct, and the data received by the receiving end will have a small probability of error. Therefore, in When a data transmission error occurs, how the sender retransmits the data to ensure that the data is not lost becomes the key to reliable communication between dies.

As shown in Figure 2, an existing technical solution adopts a retransmission mechanism based on adding a check code at the sending end. code, immediately release system resources for correct response information, and automatically retransmit data packets for incorrect response messages. Yet there is following shortcoming in above-mentioned technical scheme:

1. It is necessary to repackage the data packets to be sent. The packetization process increases the logic complexity, transmission bandwidth occupation and system delay.

2. Additional check codes need to be added to the repackaged data packets, which increases the check calculation process and increases the difficulty of chip physical implementation. At the same time, the check code will also occupy the data transmission bandwidth and increase the data transmission delay. hour.

Contents of the invention

The present disclosure aims to solve at least one of the problems in the prior art, and provides a data transmission method, system, multi-chip structure and electronic equipment.

One aspect of the present disclosure provides a data transmission method, the method comprising:

receiving first data;

assigning a first serial number to the first data, the first serial number corresponding to the first data;

generating a first data packet based on the first data and the first sequence number;

sending the first data packet and saving the first data packet.

Optionally, the method also includes:

Receiving a feedback message packet, where the feedback message packet is used to indicate whether the second data packet is correct; wherein, the second sequence number of the second data packet is less than or equal to the first sequence number;

Perform a corresponding operation on the stored second data packet according to the feedback message packet.

Optionally, performing a corresponding operation on the saved second data packet according to the feedback message packet includes:

In response to the feedback message packet indicating that the second data packet is correct, delete the saved second data packet; or,

In response to the feedback message packet indicating that the second data packet is wrong, at least one third data packet is determined from the saved data packets according to the feedback message packet, and the at least one third data packet is resent and saved.

Optionally, the determining at least one third data packet from the saved data packets according to the feedback message packet, and resending and saving the at least one third data packet includes:

Obtain the third sequence number in the feedback message packet;

determining at least one third data packet from the stored data packets according to the first sequence number and the third sequence number;

Sending the at least one third data packet and storing the at least one third data packet.

Another aspect of the present disclosure provides a data transmission method, the method comprising:

receiving a second data packet;

judging whether the second serial number in the second data packet is correct, and obtaining a judging result;

Responding to the judgment result indicating that the second sequence number is correct, receiving the second data packet; or in response to the judgment result indicating that the second sequence number is wrong, deleting the second data packet;

Sending a feedback message packet according to the judgment result, where the feedback message packet is used to indicate whether the second data packet is correct.

Optionally, the judging whether the second sequence number in the second data packet is correct, and obtaining the judging result include:

Counting the received second data packets to obtain a count value;

Comparing the count value with the second serial number to obtain a comparison result;

The judgment result is obtained according to the comparison result.

Optionally, the obtaining the judgment result according to the comparison result includes:

If the count value is the same as the second serial number, the judgment result indicates that the second serial number is correct;

If the count value is different from the second serial number, the judgment result indicates that the second serial number is wrong.

Another aspect of the present disclosure provides a data transmission system, the system includes a data sending end and a data receiving end, wherein:

The data sending end is used to receive first data; assign a first serial number to the first data, and the first serial number corresponds to the first data; based on the first data and the first data A sequence number generates a first data packet; sends the first data packet and saves the first data packet;

The data receiving end is used to receive a second data packet, the second sequence number of the second data packet is less than or equal to the first sequence number; determine whether the second sequence number in the second data packet is correct , to obtain a judgment result; in response to the judgment result indicating that the second sequence number is correct, receiving the second data packet; in response to the judgment result indicating that the second sequence number is wrong, deleting the second data packet and, sending a feedback message packet according to the judgment result, where the feedback message packet is used to indicate whether the second data packet is correct.

Another aspect of the present disclosure provides an integrated circuit for data transmission, the integrated circuit includes:

A serial number allocation unit, configured to receive first data; allocate a first serial number to the first data, the first serial number corresponds to the first data; based on the first data and the first The sequence number generates the first data packet;

a first multiplexer, configured to send the first data packet;

A buffer area for storing data packets;

a second multiplexer, configured to write the first data packet into the buffer;

A control unit, configured to receive a feedback message packet, and perform a corresponding operation on the second data packet stored in the buffer according to the feedback message packet; the feedback message packet is used to indicate whether the second data packet is correct ; Wherein, the second sequence number of the second data packet is less than or equal to the first sequence number.

Optionally, the control unit is further configured to delete the second data packet stored in the buffer in response to the feedback message packet indicating that the second data packet is correct; or, in response to the feedback message The packet indicates that the second data packet is wrong, at least one third data packet is determined from the data packets stored in the buffer according to the feedback message packet, and the first multiplexer is controlled to resend the at least one third data packet third data packet, and control the second multiplexer to write the at least one third data packet into the buffer area.

Optionally, the control unit is further configured to obtain a third sequence number in the feedback message packet; according to the first sequence number and the third sequence number, from the data packet stored in the buffer determining at least one third data packet;

The first multiplexer is further configured to send the at least one third data packet;

The second multiplexer is further configured to write the at least one third data packet into the buffer area.

Another aspect of the present disclosure provides a multi-chip structure, the multi-chip structure includes a plurality of chips, the data transmission between at least two of the chips adopts the data transmission method described above; or,

At least two of the chips are provided with the aforementioned data transmission system, or the aforementioned integrated circuits for data transmission.

Another aspect of the present disclosure provides an electronic device, including:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the method described above.

Another aspect of the present disclosure provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method described above is implemented.

Compared with the prior art, the technical solution of the present disclosure assigns a first serial number to the first data after receiving the first data, and the first serial number corresponds to the first data, based on the first data and the first serial number No. generates the first data packet, sends the first data packet and saves the first data packet, so that there is no need to add an additional check code to the first data to be sent, and there is no need to perform complicated repackaging, which simplifies the sending logic. It reduces the occupation of invalid bandwidth and reduces the system delay. In addition, by saving the first data packet while sending the first data packet, it is also possible to directly retransmit the saved first data packet when an error occurs in the data transmission process, thereby establishing efficient data retransmission when the data transmission error occurs The mechanism ensures the correct transmission of data and improves the speed and quality of data transmission.

Description of drawings

Through the following description of the embodiments of the present invention with reference to the accompanying drawings, the above and other objects, features and advantages of the present invention will be more clear, in the accompanying drawings:

Fig. 1 is a structural schematic diagram of a multi-die chip in the prior art;

Fig. 2 is the flow chart of the method for realizing high-speed data transmission of a kind of universal interface chip in the prior art;

Fig. 3 is a flowchart of a data transmission method provided by an embodiment of the present disclosure;

Fig. 4 is a schematic structural diagram of a first preset format provided by another embodiment of the present disclosure;

FIG. 5 is a flowchart of a data transmission method provided by another embodiment of the present disclosure;

FIG. 6 is a flowchart of a data transmission method provided by another embodiment of the present disclosure;

FIG. 7 is a flowchart of a data transmission method provided by another embodiment of the present disclosure;

Fig. 8 is a schematic structural diagram of a second preset format provided by another embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a data transmission system provided by another embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of an integrated circuit for data transmission provided by another embodiment of the present disclosure;

Fig. 11 is a schematic structural diagram of an electronic device provided by another embodiment of the present disclosure.

Detailed ways

The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires, the words "including", "including" and similar words in the description should be interpreted as inclusive rather than exclusive or exhaustive; that is, "including but not limited to".

In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

An embodiment of the present disclosure relates to a data transmission method, the process of which is shown in Figure 3, including:

Step 301, receiving first data. The first data may be raw data to be sent.

Step 302, assigning a first serial number to the first data, where the first serial number corresponds to the first data.

In this embodiment, when the first serial number is assigned to the first data, the first serial numbers assigned to different first data are also different, so that the first serial number can correspond to the first data, and the first The serial number can be used as the unique identifier of the first data, and different first data can be distinguished by distinguishing different first serial numbers. Optionally, assign the first sequence number to the first data according to the sending order. For example, data packets with sequence numbers 0, 1, and 2 have been sent in sequence, and after the first data is currently received, the first sequence number assigned to the first data is 3.

Step 303, generating a first data packet based on the first data and the first sequence number.

In this step, the first serial number corresponding to the first data may be directly added on the basis of the first data, thereby generating the first data packet. The first data packet may adopt a first preset format. For example, as shown in FIG. 4, the first preset format may include a data field and a serial number field. The data field is used to encapsulate the first data, and the length of the data that can be encapsulated ranges from 0 to 1024DW (Double Word, which means 4 bytes). The serial number field is used to encapsulate the serial number of the data. The length of the data that can be encapsulated is 12bit (bits). The maximum serial number that can be stored in this 12bit is 4095 (decimal notation), so the 12bit serial number field can encapsulate the first sequence The number ranges from 0 to 4095.

In this embodiment, the first data packet is generated by directly adding the first serial number corresponding to the first data on the basis of the first data, so that the first data does not need to be reconfigured when generating the first data packet. Packing reduces the complexity of sending logic, reduces the bandwidth occupation of invalid data, and reduces system delay.

It should be noted that, this embodiment does not limit the data length of each field in the first preset format, and those skilled in the art can set it according to actual requirements.

Step 304, sending the first data packet and saving the first data packet. In this embodiment, the first data packet may represent the data packet currently sent by the data sender, or the last data packet sent based on the current time point. For example, after sending data packets with sequence numbers 0, 1, and 2, the data sender receives another piece of data (namely the first data), assigns it a first sequence number 3, and then generates the first data packet and sends it out. In practical applications, the data sending end may receive a plurality of data, assign sequence numbers to the received data in turn, and generate corresponding data packets to send, and the last sent data packet is the first data packet.

In this step, the saved first data packet may be stored in a buffer to back up the sent first data packet.

Compared with the prior art, the technical solution of this embodiment assigns a first serial number to the first data after receiving the first data, and the first serial number corresponds to the first data, based on the first data and the first The serial number generates the first data packet, sends the first data packet and saves the first data packet, so that there is no need to add an additional check code to the first data to be sent, and there is no need to perform complex repackaging, which simplifies the sending logic , reducing the use of invalid bandwidth and system delay. In addition, by saving the first data packet while sending the first data packet, it is also possible to directly retransmit the saved first data packet when an error occurs in the data transmission process, thereby establishing efficient data retransmission when the data transmission error occurs The mechanism ensures the correct transmission of data and improves the speed and quality of data transmission.

Optionally, as shown in Figure 5, the method further includes:

Step 501: Receive a feedback message packet, where the feedback message packet is used to indicate whether the second data packet is correct; wherein, the second sequence number of the second data packet is less than or equal to the first sequence number.

In this implementation manner, the second data packet is a data packet received by the data receiving end and for which the data receiving end is currently performing serial number verification. And, by using the feedback message packet to indicate whether the second data packet is correct, the feedback message packet may be used to indicate whether there is an error in the data transmission process, thereby further indicating whether the data receiving end has received the data packet it should receive. Specifically, when the data sending end allocates the serial number according to the sending order, under normal transmission, the data receiving end will receive sequentially according to the serial number. For example, the data sending end sends data packets with serial numbers 0, 1, and 2 in sequence, and in the case of normal transmission, the data receiving end will receive data packets with serial numbers 0, 1, and 2 in sequence. Exemplarily, assume that the data sending end has sent data packets with sequence numbers 0-7, but due to data delay, the data receiving end only receives data packets with sequence numbers 0-4, that is, data packets with sequence numbers 5, 6, and 7 No data packets have been received yet, so the second sequence number of the second data packet is less than or equal to the first sequence number. Under normal circumstances, the data receiving end should receive a data packet with a sequence number of 5. If the sequence number of the currently received data packet (ie, the second data packet) is 5, then the sequence number of the currently received data packet will be Verify that the current received packet is correct. However, due to the possibility of errors in the transmission process, the serial number of the data packet currently received by the data receiving end is 3 (or 6, that is, not 5), then by verifying the serial number of the currently received data packet, it is determined that the currently received Incoming packet error.

Step 502: Perform corresponding operations on the stored second data packet according to the feedback message packet.

Specifically, since the first data packet is saved while sending the first data packet in step 304, each data packet received by the data receiving end corresponds to a saved data packet on the data sending end side, thus In the case of no error or error in the data transmission process, corresponding operations are respectively performed on the saved data packets.

Compared with the prior art, this embodiment uses a simple message handshake mechanism to determine whether there is an error in the data transmission process through the feedback message packet used to indicate whether the second data packet is correct, so that there is no error in the data transmission process. And in the case of an error, perform corresponding operations on the saved previously sent data packets. And, the feedback message packet occupies less transmission bandwidth, which can improve transmission efficiency.

Optionally, step 502 includes:

In response to the feedback message packet indicating that the second data packet is correct, delete the stored second data packet; or in response to the feedback message packet indicating that the second data packet is incorrect, according to the feedback message packet Determine at least one third data packet from the saved data packets, resend and save the at least one third data packet.

Specifically, when the feedback message packet indicates that the second data packet is correct, there is no error in the data transmission process, that is, the data receiving end has received the data packet it should receive. At this time, the saved second data packet loses its meaning of existence and can be Directly delete the saved second data package to release storage space.

When the feedback message packet indicates that the second data packet is wrong, an error occurs in the data transmission process, that is, the data receiving end has not received the data packet it should receive. At this time, it can be determined directly from the saved data packet according to the feedback message packet. At least one third data packet, resending and storing the at least one third data packet, so that the data receiving end can receive the data packet it should receive, so as to ensure that when the data transmission error occurs, the data can also be correctly transmitted to the data At the receiving end, improve the speed and quality of data transmission. Wherein, the third data packet indicates a data packet that needs to be resent by the data sending end, and the number of the third data packet may be one or multiple. Exemplarily, assuming that the data sending end has sent data packets with sequence numbers 0-7, at this time, the first sequence number is 7, and the data receiving end only receives data packets with sequence numbers 0-4, the data receiving end should then A packet with sequence number 5 is received. If the data receiving end currently receives the data packet with the sequence number 6, it means that the data receiving end has not received the data packet it should receive, and will notify the data sending end of the currently received data packet (ie the second data packet) through a feedback message packet. error, then the data packets with sequence numbers 5, 6, and 7 (that is, the three third data packets) all need to be resent. In addition, assuming that the data sending end has sent data packets with sequence numbers 0-7, and the data receiving end only receives data packets with sequence numbers 0-6 at this time, the data receiving end should receive data packets with sequence number 7 again. If the data receiving end currently receives the data packet with the sequence number 6, it means that the data receiving end has not received the data packet it should receive, and will notify the data sending end of the currently received data packet (ie the second data packet) through a feedback message packet. error, then the data packet with sequence number 7 (that is, a third data packet) needs to be resent.

Optionally, determine at least one third data packet from the saved data packets according to the feedback message packet, and resend and save the at least one third data packet, as shown in FIG. 6 , including:

Step 601, acquire the third serial number in the feedback message packet. Wherein, the format of the feedback message packet includes a sequence number field and a message type field, the sequence number field is used to encapsulate the sequence number of the feedback message packet, and the message type field is used to encapsulate the message type of the feedback message packet. The message type refers to the judgment result of serial number verification, including correct and incorrect. This message type can be stored in a coded manner, that is, code 0 (decimal representation) indicates correctness, code 1 (decimal representation) represents an error, and the encoding method of this embodiment does not constitute a limitation of this scheme, that is, code 1 (decimal representation) can also be used ) means correct, coded 0 (decimal representation) means error. The sequence number of the feedback message packet represents the sequence number in the last correct data packet received by the data receiving end, that is, the third sequence number is the sequence number in the last correct data packet received by the data receiving end, with When the feedback message packet indicates that the second data packet is wrong, it means that the data packet corresponding to the sequence number after the third sequence number is received incorrectly, and the data packet corresponding to the sequence number after the third sequence number needs to be retransmitted to ensure that the data transmit correctly.

Step 602: Determine at least one third data packet from stored data packets according to the first sequence number and the third sequence number. Since the second sequence number of the second data packet is less than or equal to the first sequence number, there may be one or more sequence numbers after the third sequence number. Therefore, at least one third sequence number needs to be determined from the saved data packet. A data packet, that is, a data packet corresponding to a sequence number after the third sequence number. At least one determined third data packet is sent and saved, so that when an error occurs again in the data transmission process, the saved data packet can be used again to realize data retransmission, thereby improving the speed and quality of data transmission. For example, if the data sending end has sent data packets with sequence numbers 0-7, then the first sequence number is 7, and the data receiving end only receives data packets with sequence numbers 0-4, the data receiving end should then receive the data packets with sequence number 5 data pack. If the data receiving end currently receives the data packet with sequence number 6, it means that the data receiving end has not received the data packet it should receive, then the third sequence number is 4 (the sequence number of the last correct packet received by the data receiving end is 4), by encapsulating the feedback message packet with serial number 4 to inform the data sending end that the currently received data packet (ie, the second data packet) is wrong, and the data packets with serial numbers 5, 6, and 7 (ie, 3 third data packets) Both need to be resent.

Step 603, sending the at least one third data packet and saving the at least one third data packet.

Another aspect of the present disclosure provides a data transmission method, the process of which is shown in Figure 7, including:

Step 701, receiving a second data packet. The second data packet is a data packet received by the data receiving end and for which the data receiving end is currently performing serial number verification.

Step 702, judging whether the second serial number in the second data packet is correct, and obtaining a judging result.

In this step, by judging whether the second serial number in the second data packet is correct, it can be judged whether there is an error in the data transmission process, and it can also be judged whether the received second data packet is a data packet that should be received.

Step 703, in response to the judgment result indicating that the second sequence number is correct, receive the second data packet; or in response to the judgment result indicating that the second sequence number is wrong, delete the second data packet . Whenever the data receiving end judges that the currently received data packet is wrong, it deletes the wrong data packet.

In this step, when the judgment result indicates that the second serial number is correct, no error occurs in the data transmission process, that is, the received second data packet is a data packet that should be received, and at this time, the second data packet can be received directly. After receiving the second data packet, the second sequence number in the second data packet can also be stripped to obtain the second data in the second data packet, and the second data can be sent to the corresponding subsystem. When the judgment result indicates that the second sequence number is wrong, an error occurs in the data transmission process, that is, the received second data packet is not the data packet that should be received. At this time, the second data packet can be directly deleted.

Step 704: Send a feedback message packet according to the judgment result, where the feedback message packet is used to indicate whether the second data packet is correct. That is, the feedback message is used to characterize the judgment result obtained in step 702 . Optionally, the feedback message packet includes the third sequence number and message type, the third sequence number is the sequence number in the last correct data packet received by the data receiving end, and the message type refers to Judgment result of serial number verification, including correct and incorrect.

In this step, when the judgment result indicates that the second sequence number in the second data packet is correct, the third sequence number in the feedback message packet may be the second sequence number in the second data packet. For example, the data receiving end should receive a data packet with a sequence number of 5, and the sequence number in the currently received second data packet is 5, which means that the second sequence number in the second data packet is correct, and it also indicates that the received The sequence number in the last correct data packet is 5, and the third sequence number in the feedback message packet is 5.

When the judgment result indicates that the second sequence number in the second data packet is wrong, the third sequence number in the feedback message packet may be the sequence number of the last correctly received data packet before. For example, the data receiving end should receive a data packet with sequence number 5, and the sequence number in the second data packet currently received is 7, which means that the second sequence number in the second data packet is wrong, and at this time it means that the last received The sequence number in a correct data packet is 4, and the third sequence number in the feedback message packet is 4.

Exemplarily, the feedback message package may adopt the second preset format. For example, as shown in FIG. 8, the second preset format may include a message type field and a sequence number field. The sequence number field may represent a sequence number in the feedback message packet. The sequence number field can be the same length as the sequence number field in the first preset format, for example, both can be 12 bits, that is, the range of the sequence number encapsulated in the feedback message packet is the same as 0-4095. The message type field may indicate whether the currently received and judged second data packet is received correctly, that is, indicates whether the verification of the second sequence number in the second data packet is correct or not. The judgment result can be represented by different values. For example, when the length of the message type field is 4 bits, 1000 (binary representation) can be used to indicate that the judgment result is correct, 1001 (binary representation) can be used to indicate that the judgment result is wrong, and other values can be used to implement subsequent function expansion.

Compared with the prior art, this embodiment, by judging whether the second sequence number in the received second data packet is correct, respectively processes the second data packet according to the judgment result, and sends a feedback message packet according to the judgment result, thereby utilizing A simple message handshake mechanism can determine whether there is an error in the data transmission process to determine whether the data needs to be retransmitted.

Optionally, step 702 may include:

Counting the received second data packets to obtain a count value; the count value is the sequence number of the correct data packet that should be received by the data receiving end.

The judgment result is obtained according to the comparison result.

Specifically, the counter can be counted from 0, and the count value is increased by 1 every time a second data packet is received correctly, so that when judging whether the second sequence number in the second data packet is correct, it can be based on the current count value and the current The corresponding relationship of the second serial number being judged is obtained to obtain a judgment result.

By counting the second data packets received, comparing the count value with the second sequence number in the second data packet, and obtaining a judgment result of whether the second sequence number in the second data packet is correct according to the comparison result, Therefore, when judging whether there is an error in the data transmission process, there is no need to perform complex verification calculations, which simplifies the judging process, reduces system delay, and reduces the difficulty of physical implementation of the chip.

If the count value is the same as the second serial number, the judgment result indicates that the second serial number is correct; if the count value is different from the second serial number, the judgment result indicates that the The second serial number is wrong.

Specifically, when the second sequence number of the second data packet starts from 0, the counter also starts counting from 0, so that the count value can correspond to the second sequence number of the second data packet that should be received. For example, if the count value is 5 and the second sequence number of the received second data packet is also 5, it means that the second sequence number is correct and the received second data packet is a data packet that should be received. If the count value is 5 and the second sequence number of the received second data packet is 4 or 6, it means that the second sequence number is wrong, the received second data packet is not the data packet that should be received, and the second sequence number needs to be Number 5 and the second data packets after 5 are resent.

Another embodiment of the present disclosure relates to a data transmission system. As shown in FIG. 9, the system includes a data sending end 901 and a data receiving end 902, wherein:

The data sending end 901 is configured to receive first data; assign a first serial number to the first data, and the first serial number corresponds to the first data; based on the first data and the The first sequence number generates a first data packet; sends the first data packet and saves the first data packet;

The data receiving end 902 is configured to receive a second data packet, the second sequence number of the second data packet is less than or equal to the first sequence number; determine whether the second sequence number in the second data packet is If it is correct, the judgment result is obtained; in response to the judgment result indicating that the second serial number is correct, the second data packet is received; in response to the judgment result indicating that the second serial number is wrong, the second data packet is deleted and sending a feedback message packet according to the judgment result, where the feedback message packet is used to indicate whether the second data packet is correct.

Exemplarily, the data sending end 901 has sent data packets with sequence numbers 0-6, then receives the first data, assigns the first sequence number 7 to the first data, generates the first data packet and sends it to the data receiving end 902 . At the same time, the data receiving end 902 has received the data packets with sequence numbers 0-4, the count value of the counter of the data receiving end 902 is 5, and then the second data packet is received. The data receiving terminal 902 judges whether the second serial number in the second data packet is correct, and the description of different judgment results is as follows:

If the second sequence number in the second data packet is 5, it is determined that the second data packet is correct, and the data receiving end 902 receives the second data packet, and generates a feedback message packet indicating that the second data packet is correct; In this case, the third sequence number in the feedback message packet is 5. After receiving the feedback message packet, the data sending end 901 normally sends the newly received data, such as a data packet with a sequence number of 8, to the data receiving end 902;

If the second sequence number in the second data packet is 2, it is determined that the second data packet is wrong (that is, a repeated packet), and the data receiving end 902 deletes the second data packet, and generates an error indicating that the second data packet feedback message package. In this case, the third sequence number in the feedback message packet is 4. After the data sending end 901 receives the feedback message packet, it takes out the data packet of the serial number 5-7 in the buffer area and sends it to the data receiving end 902 again, and writes the data packet of the serial number 5-7 into the buffer area again;

If the second sequence number in the second data packet is 6, it is determined that the second data packet is wrong (that is, an invalid packet), and the data receiving end 902 deletes the second data packet, and generates an error indicating that the second data packet feedback message package. In this case, the third sequence number in the feedback message packet is 4. After receiving the feedback message packet, the data sending end 901 takes out the data packets with sequence numbers 5-7 from the buffer and sends them to the data receiving end 902 again, and writes the data packets with sequence numbers 5-7 into the buffer again.

If the second sequence number in the second data packet is 10, which is greater than the maximum sequence number of the data packet sent by the data sending end 901, it means that the second data packet is an abnormal packet, and the data receiving end 902 deletes the second data Bag. Further, the data receiving end 902 may generate an abnormal response packet, and feed back to the data sending end 901 to inform the situation.

For a specific implementation method of the data transmission system provided in the embodiments of the present disclosure, reference may be made to the description of the data transmission method provided in the embodiments of the present disclosure, and details are not repeated here.

Compared with the prior art, the embodiment of the present disclosure assigns a first serial number to the first data after receiving the first data. The first serial number corresponds to the first data. Based on the first data and the first The serial number generates the first data packet, sends the first data packet and saves the first data packet, so that there is no need to add an additional check code to the first data to be sent, and there is no need to perform complex repackaging, which simplifies the sending logic , reducing the use of invalid bandwidth and system delay. In addition, the data receiving end judges whether the second sequence number in the received second data packet is correct, and sends a feedback message to the data sending end according to the judgment result, so that a simple handshake mechanism can be used to determine whether the data sending process is wrong, And when there is an error in the data sending process, the data sending end can directly retransmit the saved data packet, thus establishing an efficient data retransmission mechanism when the data transmission error occurs, ensuring the correct transmission of data, improving the speed and speed of data transmission and quality.

Another embodiment of the present disclosure relates to an integrated circuit for data transmission. As shown in FIG. 10 , the integrated circuit includes:

A serial number allocation unit 1001, configured to receive first data; allocate a first serial number to the first data, the first serial number corresponds to the first data; based on the first data and the first A sequence number generates the first data packet;

A first multiplexer 1002, configured to send the first data packet;

Buffer area 1003, used to save data packets;

A second multiplexer 1004, configured to write the first data packet into the buffer area 1003;

The control unit 1005 is configured to receive a feedback message packet, and perform a corresponding operation on the second data packet stored in the buffer 1003 according to the feedback message packet; the feedback message packet is used to indicate that the second data packet Is it correct? Wherein, the second sequence number of the second data packet is less than or equal to the first sequence number.

Compared with the prior art, the embodiment of the present disclosure assigns the first serial number to the first data after the serial number allocation unit receives the first data, and the first serial number corresponds to the first data, based on the first data and The first serial number generates the first data packet, the first multiplexer sends the first data packet, the second multiplexer writes the first data packet into the cache area, and the cache area preserves the written data packet, thereby There is no need to add an extra check code to the first data to be sent, and there is no need to perform complex repackaging, which simplifies the sending logic, reduces invalid bandwidth occupation, and reduces system delay. In addition, the control unit receives a feedback message packet indicating whether the second data packet is correct, and performs corresponding operations on the data packet stored in the buffer area according to the feedback message packet, so that a simple handshake mechanism can be used to determine whether there is an error in the data transmission process, and When there is an error in the data transmission process, the data packets saved in the buffer area can be directly retransmitted, thereby establishing an efficient data retransmission mechanism when the data transmission error occurs, ensuring the correct transmission of data, and improving the speed and quality of data transmission.

Optionally, the control unit 1005 is further configured to delete the second data packet stored in the buffer 1003 in response to the feedback message packet indicating that the second data packet is correct; or, in response to the The feedback message packet indicates that the second data packet is wrong, at least one third data packet is determined from the data packets stored in the buffer area 1003 according to the feedback message packet, and the first multiplexer 1002 is controlled to resend the at least one third data packet, and control the second multiplexer 1004 to write the at least one third data packet into the buffer area 1003 .

Optionally, the control unit 1005 is further configured to obtain a third sequence number in the feedback message packet; according to the first sequence number and the third sequence number, the data stored in the cache area 1003 determining at least one third data packet in the packet;

The first multiplexer 1002 is further configured to send the at least one third data packet;

The second multiplexer 1004 is further configured to write the at least one third data packet into the buffer 1003 .

In order to enable those skilled in the art to better understand the overall flow of the specific implementation method of the above-mentioned integrated circuit for data transmission, a specific example is used below for illustration.

Referring to FIG. 10, the specific implementation method of the integrated circuit for data transmission in this embodiment includes the following steps:

1. After the work starts, send the first data to be sent to the serial number allocation unit 1001 .

2. The serial number allocation unit 1001 receives the first data, allocates the first serial number "0" to the first data, and generates the first data packet according to the first data and the first serial number "0".

3. The first data packet is gated by the first multiplexer 1002 and sent to the data receiving end.

4. During the process of sending the first data packet, the first data packet is simultaneously selected by the second multiplexer 1004, and then written into the buffer area 1003, and the buffer area 1003 stores the first data packet.

5. When the data receiving end receives the second data packet, it detects the second serial number in the second data packet, judges whether the second serial number is correct, and obtains a judgment result.

6. If the judgment result of the second serial number is correct, that is, the second serial number is also 0, then:

The data receiving end strips the second serial number "0" in the received second data packet, sends the remaining second data after stripping the second serial number to the corresponding subsystem, and generates a feedback message whose message type is correct packet, to indicate that the second data packet is received correctly, and the feedback message packet is sent to the control unit 1005 .

After receiving the feedback message packet whose message type is correct, the control unit 1005 deletes the stored second data packet from the cache area 1003 .

7. If the judgment result of the second serial number is wrong, that is, the second serial number is not 0, then:

The data receiving end directly discards the second data packet, and generates a feedback message packet whose message type is wrong to indicate that the second data packet is received incorrectly, and sends the feedback message packet to the control unit 1005 .

After the control unit 1005 receives the feedback message packet whose message type is an error, it stops the reception of upstream data through the second multiplexer 1004, and gates the buffer area 1003 through the first multiplexer 1002, and the buffer area In 1003, the data whose serial number is 0 is resent once, and at the same time, the data whose serial number is 0 is written into the buffer area 1003 again through the second multiplexer 1004, so as to prevent the data from being transmitted again during the data retransmission process. error.

8. The data receiver receives the retransmitted data again and verifies the serial number to determine whether the serial number is correct. If it is correct, it will enter the processing branch of the above step 6. If it is wrong, it will enter the processing branch of the above step 7.

Another embodiment of the present disclosure relates to a multi-chip structure, the multi-chip structure includes a plurality of chips, and the data transmission method between at least two of the chips adopts the data transmission method described in the above embodiment; or,

At least two of the chips are provided with the data transmission system described in the above embodiment, or provided with the integrated circuit for data transmission described in the above embodiment.

Another embodiment of the present disclosure relates to an electronic device, as shown in FIG. 11 , comprising:

at least one processor 1101; and,

A memory 1102 connected in communication with the at least one processor 1101; wherein,

The memory 1102 stores instructions that can be executed by the at least one processor 1101, and the instructions are executed by the at least one processor 1101, so that the at least one processor 1101 can execute the method described in the above-mentioned embodiment .

Wherein, the memory and the processor are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors and various circuits of the memory together. The bus may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and therefore will not be further described herein. The bus interface provides an interface between the bus and the transceivers. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing means for communicating with various other devices over a transmission medium. The data processed by the processor is transmitted on the wireless medium through the antenna, further, the antenna also receives the data and transmits the data to the processor.

The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. Instead, memory can be used to store data that the processor uses when performing operations.

Another embodiment of the present disclosure relates to a computer-readable storage medium storing a computer program, and implementing the method described in the above-mentioned embodiment when the computer program is executed by a processor.

That is, those skilled in the art can understand that all or part of the steps in the method described in the above-mentioned embodiments can be completed by instructing related hardware through a program, the program is stored in a storage medium, and includes several instructions to make a A device (which may be a single-chip microcomputer, a chip, etc.) or a processor (processor) executes all or part of the steps of the methods described in various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, ROM (Read-Only Memory, read-only memory), RAM (Random Access Memory, random access memory), magnetic disk or optical disc, etc. Various media that can store program codes .

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present disclosure, and in practical applications, various changes can be made in form and details without departing from the spirit and spirit of the present disclosure. scope.

Claims

A data transmission method, characterized in that the method comprises:

receiving first data;

assigning a first serial number to the first data, the first serial number corresponding to the first data;

generating a first data packet based on the first data and the first sequence number;

sending the first data packet and saving the first data packet.
The method according to claim 1, further comprising:

Receiving a feedback message packet, where the feedback message packet is used to indicate whether the second data packet is correct; wherein, the second sequence number of the second data packet is less than or equal to the first sequence number;

Perform a corresponding operation on the stored second data packet according to the feedback message packet.
The method according to claim 2, wherein, according to the feedback message packet, performing corresponding operations on the saved second data packet includes:

In response to the feedback message packet indicating that the second data packet is correct, delete the saved second data packet; or,

In response to the feedback message packet indicating that the second data packet is wrong, at least one third data packet is determined from the saved data packets according to the feedback message packet, and the at least one third data packet is resent and saved.
The method according to claim 3, wherein the determining at least one third data packet from the stored data packets according to the feedback message packet, resending and saving the at least one third data packet comprises:

Obtain the third sequence number in the feedback message packet;

determining at least one third data packet from the stored data packets according to the first sequence number and the third sequence number;

Sending the at least one third data packet and saving the at least one third data packet.
The method according to any one of claims 1 to 4, wherein the format of the first data packet includes a data field and a first sequence number field, and the data field is used to encapsulate the first data, so The first serial number field is used to encapsulate the first serial number.
The method according to claim 4, wherein the format of the feedback message packet includes a second sequence number field and a message type field, and the second sequence number field is used to encapsulate the third sequence of the feedback message packet number, the message type field is used to encapsulate the message type of the feedback message packet.
A data transmission method, characterized in that the method comprises:

receiving a second data packet;

judging whether the second serial number in the second data packet is correct, and obtaining a judging result;

Responding to the judgment result indicating that the second sequence number is correct, receiving the second data packet; or in response to the judgment result indicating that the second sequence number is wrong, deleting the second data packet;

Sending a feedback message packet according to the judgment result, where the feedback message packet is used to indicate whether the second data packet is correct.
The method according to claim 7, wherein the sending a feedback message packet according to the judgment result comprises:

Determining the sequence number in the last correct data packet received as the third sequence number;

Based on the encoding method, determine the message type according to the judgment result;

generating a feedback message packet according to the third sequence number and the message type;

Send the feedback message packet.
The method according to claim 7, wherein after receiving the second data packet in response to the judgment result indicating that the second sequence number is correct, further comprising:

stripping the second serial number in the second data packet to obtain second data in the second data packet;

Send the second data to a corresponding subsystem.
A data transmission system, characterized in that the system includes a data sending end and a data receiving end, wherein:

The data sending end is used to receive first data; assign a first serial number to the first data, and the first serial number corresponds to the first data; based on the first data and the first data A sequence number generates a first data packet; sends the first data packet and saves the first data packet;

The data receiving end is used to receive a second data packet, the second sequence number of the second data packet is less than or equal to the first sequence number; determine whether the second sequence number in the second data packet is correct , to obtain a judgment result; in response to the judgment result indicating that the second sequence number is correct, receiving the second data packet; in response to the judgment result indicating that the second sequence number is wrong, deleting the second data packet and, sending a feedback message packet according to the judgment result, where the feedback message packet is used to indicate whether the second data packet is correct.
An integrated circuit for data transmission, characterized in that the integrated circuit includes:

A serial number allocation unit, configured to receive first data; allocate a first serial number to the first data, the first serial number corresponds to the first data; based on the first data and the first The sequence number generates the first data packet;

a first multiplexer, configured to send the first data packet;

A buffer area for storing data packets;

a second multiplexer, configured to write the first data packet into the buffer;

A control unit, configured to receive a feedback message packet, and perform a corresponding operation on the second data packet stored in the buffer according to the feedback message packet; the feedback message packet is used to indicate whether the second data packet is correct ; Wherein, the second sequence number of the second data packet is less than or equal to the first sequence number.
The integrated circuit of claim 11 wherein,

The control unit is further configured to, in response to the feedback message packet indicating that the second data packet is correct, delete the second data packet stored in the buffer; or, in response to the feedback message packet indicating that the The second data packet is wrong, determining at least one third data packet from the data packets stored in the buffer according to the feedback message packet, and controlling the first multiplexer to resend the at least one third data packet , and controlling the second multiplexer to write the at least one third data packet into the buffer.
The integrated circuit of claim 12 wherein,

The control unit is further configured to obtain a third sequence number in the feedback message packet; and determine at least one sequence number from the data packets stored in the buffer area according to the first sequence number and the third sequence number. Three packets;

The first multiplexer is further configured to send the at least one third data packet;

The second multiplexer is further configured to write the at least one third data packet into the buffer area.
An integrated circuit according to any one of claims 11 to 13, characterized in that,

The control unit is further configured to close the first multiplexer in response to the feedback message packet indicating an error in the second data packet, and in response to determining at least A third data packet, turning on the first multiplexer.
A multi-chip structure, the multi-chip structure includes a plurality of chips, characterized in that the data transmission between at least two chips adopts the data transmission method described in any one of claims 1 to 6, or adopts the The data transmission method described in any one of claims 7 to 9; or,

At least two of the chips are provided with the data transmission system according to claim 10, or provided with the integrated circuit for data transmission according to any one of claims 11 to 14.
An electronic device comprising:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to implement the data transmission method according to any one of claims 1 to 6, or claim 7 The data transmission method described in any one of to 9.
A computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the data transmission method described in any one of claims 1 to 6 is implemented, or the data transmission method described in any one of claims 7 to 9 is implemented. The data transmission method described above.