CN112217599B - Data frame receiving method and device, and communication method and system - Google Patents
Data frame receiving method and device, and communication method and system Download PDFInfo
- Publication number
- CN112217599B CN112217599B CN201910627263.8A CN201910627263A CN112217599B CN 112217599 B CN112217599 B CN 112217599B CN 201910627263 A CN201910627263 A CN 201910627263A CN 112217599 B CN112217599 B CN 112217599B
- Authority
- CN
- China
- Prior art keywords
- frame
- data
- data frame
- communication data
- communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The invention provides a data frame receiving method and device, a communication method and a system, wherein the data frame receiving method comprises the following steps: the receiving device receives a third communication data frame, wherein the communication data frame comprises a frame head, frame data and a frame tail; extracting the verification data and the frame data to perform verification operation; if the check is wrong, caching a third communication data frame; acquiring first to third communication data frames which are cached, and extracting N data bits of frame data in each communication data frame; obtaining the 1 st bit to the Nth bit of the corrected frame data through a preset calculation mode, wherein the preset calculation mode is that data bits of the frame data in the first communication data frame to the third communication data frame, which are positioned at the ith bit, are respectively obtained, three data bits are obtained in total, the probability of the data bits 1 and 0 in the three data bits is calculated, and the data bit with high probability is set as the ith bit of the corrected frame data; and checking the corrected frame data by using the checking data, and if the checking is correct, sending an ACK frame to the sending device.
Description
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a data frame receiving method and a data frame receiving apparatus, and a data frame communication method and a data frame communication system.
Background
In the field of communications, data is generally transmitted and stored in a data frame unit formed by combining data bits "0" and "1", while in the process of data frame transmission, the data frame is usually damaged to a certain extent due to noise or interference existing in a transmission channel, and in order to check the correctness of the received data frame, the current method is to add check information into the transmitted data frame. However, if the receiving device checks the error, i.e., requests the transmitting device to retransmit the data frame, the communication efficiency will be reduced to some extent. Therefore, how to design a data frame receiving method for reducing the number of data retransmissions is a technical problem to be solved in the art.
Disclosure of Invention
The present invention is directed to solving the above problems.
The invention mainly aims to provide a data frame receiving method, which comprises the following steps: the receiving device receives a third communication data frame, wherein the communication data frame comprises a frame head, frame data and a frame tail, the frame data comprises N data bits, the frame tail comprises check data, N is a positive integer, and N is more than or equal to 1; after receiving the third communication data frame, the receiving device extracts the check data and the frame data of the third communication data frame and carries out check operation on the frame data according to the check data; if the check is wrong, caching a third communication data frame; the receiving device acquires the cached first communication data frame, the cached second communication data frame and the cached third communication data frame, and respectively extracts N data bits of frame data in the first communication data frame, N data bits of the frame data in the second communication data frame and N data bits of the frame data in the third communication data frame; the first communication data frame, the second communication data frame and the third communication data frame are sent by the sending device according to the same preset data frame to be sent; obtaining the 1 st bit to the nth bit of the correction frame data through a preset calculation mode, wherein the preset calculation mode is that data bits, which are positioned at the ith bit of the frame data in the first communication data frame, the second communication data frame and the third communication data frame, are respectively obtained, three data bits are obtained in total, the probabilities of the data bit 1 and the data bit 0 in the three data bits are calculated, and the data bit with the high probability is set as the ith bit of the correction frame data, wherein i is 1, … …, N; and carrying out verification operation on the corrected frame data by using the verification data, and if the verification is correct, sending an ACK frame to the sending device.
In addition, the frame header also comprises data synchronization header information and physical address information; before the receiving device extracts the check data and the frame data of the third communication data frame, the method further comprises the following steps: the receiving device judges whether the frame header in the third communication data frame contains the data synchronization header information or not, judges whether the physical address information is correct or not, and if the frame header contains the data synchronization header information and the physical address information is correct, executes the operation of extracting the check data and the frame data of the third communication data frame.
Another main object of the present invention is to provide a data frame communication method including any one of the above data frame receiving methods, wherein before a receiving apparatus receives a third communication data frame, the method further includes: the sending device sends a first communication data frame to be sent according to a preset data frame to be sent, if an ACK frame is not received in the preset time, the sending device sends a second communication data frame to be sent according to the preset data frame to be sent, and if the ACK frame is not received in the preset time, the sending device sends a third communication data frame to be sent according to the preset data frame to be sent.
In addition, before the transmitting device transmits the first communication data frame to be transmitted according to the preset data frame to be transmitted, the method further includes: acquiring a first carrier frequency according to a preset carrier frequency hopping sequence, and transmitting a first communication data frame to be transmitted according to the first carrier frequency; before the sending device sends the second communication data frame to be sent according to the preset data frame to be sent, the method further comprises the following steps: acquiring a second carrier frequency according to a preset carrier frequency hopping sequence, and transmitting a second communication data frame to be transmitted according to the first carrier frequency; before the transmitting device transmits a third communication data frame to be transmitted according to the preset data frame to be transmitted, the method further includes: and obtaining a third carrier frequency according to a preset carrier frequency hopping sequence, and sending a third communication data frame to be sent according to the third carrier frequency.
Another primary object of the present invention is to provide a data frame receiving apparatus, comprising: the device comprises a receiving module, a checking module, a caching module, a calculating module and an ACK frame sending module, wherein the receiving module is used for receiving a third communication data frame and sending the third communication data frame to the checking module, the communication data frame comprises a frame head, frame data and a frame tail, the frame data comprises N data bits, and the frame tail comprises checking data, wherein N is a positive integer and is more than or equal to 1; the checking module is used for extracting the checking data and the frame data of the third communication data frame after receiving the third communication data frame sent by the receiving module, and checking the frame data according to the checking data; if the check is wrong, the third communication data frame is sent to the cache module; the buffer module is used for buffering a third communication data frame and buffering a first communication data frame and a second communication data frame; the calculation module is used for acquiring the cached first communication data frame, the cached second communication data frame and the cached third communication data frame, and respectively extracting N data bits of frame data in the first communication data frame, N data bits of frame data in the second communication data frame and N data bits of frame data in the third communication data frame; the first communication data frame, the second communication data frame and the third communication data frame are sent by the data frame sending device according to the same preset data frame to be sent after the data frame receiving device checks errors; obtaining the 1 st bit to the nth bit of the correction frame data through a preset calculation mode, wherein the preset calculation mode is that data bits, which are positioned at the ith bit of the frame data in the first communication data frame, the second communication data frame and the third communication data frame, are respectively obtained, three data bits are obtained in total, the probabilities of the data bit 1 and the data bit 0 in the three data bits are calculated, and the data bit with the high probability is set as the ith bit of the correction frame data, wherein i is 1, … …, N; sending the corrected frame data to a checking module; the checking module is also used for receiving the corrected frame data, using the checking data to check the corrected frame data, and informing the ACK frame sending module if the checking is correct; and the ACK frame sending module is used for sending the ACK frame to the data frame sending device.
In addition, the frame header also comprises data synchronization header information and physical address information; the data frame receiving device also comprises a judging module; and the judging module is used for judging whether the frame header in the third communication data frame contains data synchronization header information or not before the verifying module extracts the verifying data and the frame data of the third communication data frame, judging whether the physical address information is correct or not, and if the frame header contains the data synchronization header information and the physical address information is correct, executing the operation of extracting the verifying data and the frame data of the third communication data frame.
Another main object of the present invention is to provide a data frame communication system including the data frame receiving apparatus of any one of the above and a data frame transmitting apparatus, the data frame transmitting apparatus including: the device comprises a sending module and an ACK frame receiving module, wherein the sending module is used for sending a first communication data frame to be sent according to a preset data frame to be sent, if the ACK frame receiving module does not receive the ACK frame in a preset time, sending a second communication data frame to be sent according to the preset data frame to be sent, and if the ACK frame receiving module does not receive the ACK frame in the preset time, sending a third communication data frame to be sent according to the preset data frame to be sent; and the ACK frame receiving module is used for receiving the ACK frame and informing the sending module.
In addition, the sending module is further configured to obtain a first carrier frequency according to a preset carrier frequency hopping sequence, and send a first communication data frame to be sent according to the first carrier frequency; acquiring a second carrier frequency according to a preset carrier frequency hopping sequence, and transmitting a second communication data frame to be transmitted according to the first carrier frequency; and obtaining a third carrier frequency according to a preset carrier frequency hopping sequence, and sending a third communication data frame to be sent according to the third carrier frequency.
It can be seen from the above technical solutions provided by the present invention that the present invention provides a data frame receiving method and a data frame receiving apparatus, and a data frame communication method and a data frame communication system. Wherein, in the data frame receiving method and the data frame receiving device, after receiving the third communication data frame, if the error is checked, the receiving device buffers the received third communication data frame, performing probability calculation on data bits of corresponding bits of all buffered communication data frames, using data bits with high probability in each bit to form correction frame data, and checking the corrected frame data, and if the verification is passed, transmitting an ACK frame to the transmitting device, and by the above method, when the communication data frames received by the receiving device can not be checked, the corrected frame data is obtained through calculation and verified, the problem that the whole communication data frame is checked incorrectly due to the fact that a certain bit or a plurality of bits of data in the frame data are wrong in the transmission or decoding process is solved, the probability of correct checking is improved, and the retransmission times of the transmitting device are reduced. The data frame communication method and the data frame communication system comprise the data frame receiving method and the data frame receiving device, and before the receiving device receives a third communication data frame, the transmitting device transmits a first to a third communication data frames to be transmitted according to the preset data frame to be transmitted, namely, when the maximum retransmission times is not reached and an ACK frame is not received, the communication data frame to be transmitted is repeatedly transmitted, so that the receiving device can receive the communication data frame repeatedly transmitted by the transmitting device when the received communication data frame is not checked to be passed, and the ACK frame is transmitted to the transmitting device after the check is passed, thereby reducing the interaction times of the transmitting device and the receiving device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flowchart of a data frame receiving method according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a data frame communication method according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a data frame receiving apparatus according to embodiment 3 of the present invention;
fig. 4 is a schematic structural diagram of a data frame receiving system according to embodiment 4 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity or location.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
The embodiment provides a data frame receiving method which can be applied to the field of power line communication or the field of network communication. Fig. 1 is a flowchart of an alternative data frame receiving method according to this embodiment.
As shown in fig. 1, the data frame receiving method mainly includes the following steps (step 101 to step 106):
and 101, receiving a third communication data frame by a receiving device, wherein the communication data frame comprises a frame head, frame data and a frame tail, the frame data comprises N data bits, and the frame tail comprises check data, wherein N is a positive integer and is more than or equal to 1.
In this embodiment, the communication data Frame includes a Frame header (Start of Frame, abbreviated SOF), Frame data, and a Frame trailer (End of Frame, abbreviated EOF), where the Frame trailer includes check data, where the check data may be check data obtained by a check method such as CRC check, and the Frame trailer may further identify data reception End.
And 102, after the receiving device receives the third communication data frame, extracting the verification data and the frame data of the third communication data frame, and performing verification operation on the frame data according to the verification data.
As an optional embodiment of the present invention, the frame header further includes data synchronization header information and physical address information, and before the receiving apparatus extracts the check data and the frame data of the third communication data frame, the method further includes: the receiving device judges whether the frame header in the third communication data frame contains the data synchronization header information or not, judges whether the physical address information is correct or not, and if the frame header contains the data synchronization header information and the physical address information is correct, executes the operation of extracting the check data and the frame data of the third communication data frame. The receiving device can identify that a data frame is started to be received currently and can determine the initial position or time of frame data in the received data frame through the synchronous information, in addition, the receiving device can also obtain the carrier frequency of data transmission of the sending device through the synchronous information, and the carrier frequency is adopted to receive the data frame after the carrier frequency of the data transmission of the sending device is obtained through analyzing the synchronous information; the physical address information is the target receiving device marked with the communication data frame, and after the receiving device receives the communication data frame, whether the target receiving device of the currently received communication data frame is the receiving device can be judged by analyzing whether the physical address information is matched with the physical address information of the receiving device. In this optional embodiment, before the receiving device verifies the frame data of the third communication data frame, the receiving device verifies the synchronization header information and the physical address information first, so as to avoid verifying invalid data or erroneously received data, thereby improving the verification efficiency.
In this embodiment, after the receiving device receives the communication data frame, the synchronization header information and the physical address information in the communication data frame may be verified before the frame data of the communication data frame is subjected to the verification operation, so as to improve the verification and communication efficiency.
And 103, if the error is checked, caching a third communication data frame.
In this embodiment, the receiving device checks the frame data of the communication data frame, and may extract the check data of the end of frame in the communication data frame, and the check of the frame data is completed by the check data. If the check fails, the communication data frame is buffered for subsequent use, and if the check is correct, an ACK frame is sent to the sending device.
104, the receiving device acquires the cached first communication data frame, the cached second communication data frame and the cached third communication data frame, and respectively extracts N data bits of frame data in the first communication data frame, N data bits of frame data in the second communication data frame and N data bits of frame data in the third communication data frame; the first communication data frame, the second communication data frame and the third communication data frame are sent by the sending device according to the same preset data frame to be sent.
In this embodiment, the first communication data frame to the third communication data frame are all communication data frames buffered after the receiving device checks the error, and are communication data frames sent by the sending device according to the same preset data frame to be sent, that is, communication data frames repeatedly sent by the sending device. And the receiving device acquires the three buffered communication data frames, extracts the frame data in each communication data frame, and performs the next calculation operation.
In this embodiment, the maximum retransmission number of the data frame to be transmitted may be preset for the transmitting apparatus three times, that is, after the receiving apparatus receives the communication data frame (third communication data frame) of the maximum retransmission number transmitted by the transmitting apparatus, that is, after determining that the transmitting apparatus is not to retransmit any more, the calculation operation is started.
And 105, obtaining the 1 st bit to the nth bit of the correction frame data through a preset calculation mode, wherein the preset calculation mode is to respectively obtain data bits, located at the ith bit, of the frame data in the first communication data frame, the second communication data frame and the third communication data frame, obtain three data bits in total, calculate probabilities of data bit 1 and data bit 0 in the three data bits, and set the data bit with the high probability as the ith bit of the correction frame data, wherein i is 1, … …, N.
In this embodiment, the probabilities of the data bit 1 and the data bit 0 located at the 1 st bit of the frame data in each communication data frame are calculated, the calculation is repeated until the probabilities of the data bit 1 and the data bit 0 located at the nth bit of the frame data in each communication data frame are calculated, and the bit data with the high probability in each bit is filled into the corresponding bit of the correction frame data to obtain the correction frame data. For example, the data frame to be transmitted preset by the transmitting apparatus is 10101100, the frame data in the first communication data frame received by the receiving apparatus is 11100101, the frame data in the second communication data frame is 00101110, and the frame data in the third communication data frame is 10111000, and the following calculation is performed: acquiring the data bit of the 1 st bit in the three communication data frames as 101, and calculating that the probability of the data bit 1 is 66.7% and the probability of the data bit 0 is 33.3%, so that the 1 st bit of the correction frame data is the data bit 1; acquiring the data bit of the 2 nd bit in the three communication data frames as 100, and calculating to obtain that the probability of the data bit 1 is 33.3% and the probability of the data bit 0 is 66.7%, so that the 1 st bit of the correction frame data is the data bit 0; and repeating the calculation, wherein the 3 rd bit of the corrected frame data is data bit 1, the 4 th bit is data bit 0, … …, and the 8 th bit is data bit 0, so that the corrected frame data is 10101100. By calculating the data bit with the maximum received probability and forming the correction frame data by the data bit with the maximum probability, each bit of the correction frame data is the data bit with the maximum probability of the bit, the problem that the whole communication data frame is checked incorrectly due to the error of one bit or a plurality of bits in the frame data in the transmission or decoding process is solved, and the correct checking probability is improved.
And step 106, performing checking operation on the corrected frame data by using the checking data, and if the checking is correct, sending an ACK frame to the sending device.
In the embodiment, the calibration data is used for performing calibration operation on the corrected frame data, so that the probability of correct calibration is improved. And after the check is correct, sending the ACK frame to the sending device, wherein the sending device can carry out the next operation according to the received ACK frame.
With the data frame receiving method provided in this embodiment, after receiving the third communication data frame, if the error is checked, the receiving device buffers the received third communication data frame, performing probability calculation on data bits of corresponding bits of all buffered communication data frames, using data bits with high probability in each bit to form correction frame data, and checking the corrected frame data, and if the verification is passed, transmitting an ACK frame to the transmitting device, and by the above method, when the communication data frames received by the receiving device can not be checked, the corrected frame data is obtained through calculation and verified, the problem that the whole communication data frame is checked incorrectly due to the fact that a certain bit or a plurality of bits of data in the frame data are wrong in the transmission or decoding process is solved, the probability of correct checking is improved, and the retransmission times of the transmitting device are reduced.
Example 2
This embodiment provides a data frame communication method, which includes the data frame receiving method in embodiment 1, and therefore, the same parts as embodiment 1 are not described again, and only the differences are described in detail:
before the receiving apparatus in step 1 of embodiment 1 receives the third communication data frame, as shown in fig. 2, the following steps (steps a to c) are further included:
step a, a sending device sends a first communication data frame to be sent according to a preset data frame to be sent;
step b, if the ACK frame is not received within the preset time, the sending device sends a second communication data frame to be sent according to the preset data frame to be sent;
and c, if the ACK frame is not received within the preset time, the sending device sends a third communication data frame to be sent according to the preset data frame to be sent.
In this embodiment, the data to be sent of the sending apparatus may include a plurality of preset data frames to be sent, and the sending apparatus sequentially completes sending of the preset data frames to be sent one by one from sending of a first preset data frame to be sent. Each communication data frame is a series of bit sequences, and the data to be transmitted is a bit sequence composed of a plurality of data frames to be transmitted.
In this embodiment, if the sending device does not receive the ACK frame within the preset time, it is considered that the communication data frame to be sent which was sent last time is not successfully received or failed to be checked by the receiving device, the sending device sends the next communication data frame to be sent, and the content of the next communication data frame to be sent is the same as that of the communication data frame to be sent which was sent last time, and both the next communication data frame to be sent and the communication data frame to be sent which was sent last time are sent according to the preset data frame to be sent, that is, for the sending device, it operates to resend the communication data frame which was sent last time. And under the condition that the ACK frame is not received, the communication data frame is retransmitted, so that the communication consistency and the data integrity are guaranteed.
In this embodiment, the transmitting device may transmit the communication data frame to be transmitted in a broadcast manner, so as to improve the communication efficiency.
As an optional embodiment of the present invention, before the sending device sends the first communication data frame to be sent according to the preset data frame to be sent, the method further includes: acquiring a first carrier frequency according to a preset carrier frequency hopping sequence, and transmitting a first communication data frame to be transmitted according to the first carrier frequency; before the sending device sends the second communication data frame to be sent according to the preset data frame to be sent, the method further comprises the following steps: acquiring a second carrier frequency according to a preset carrier frequency hopping sequence, and transmitting a second communication data frame to be transmitted according to the first carrier frequency; before the transmitting device transmits a third communication data frame to be transmitted according to the preset data frame to be transmitted, the method further includes: and obtaining a third carrier frequency according to a preset carrier frequency hopping sequence, and sending a third communication data frame to be sent according to the third carrier frequency. In this optional embodiment, the transmitting apparatus may pre-store a carrier frequency hopping sequence list, perform frequency hopping according to the carrier frequency hopping sequence in the list before completing transmission of the communication data frame to be transmitted, and complete the transmission operation using the hopped frequency. The transmitting device transmits the communication data frame by adopting the converted carrier frequency, thereby avoiding the situation that the transmitting device and the receiving device cannot complete communication when the receiving device cannot receive the signal of the specific carrier frequency, and improving the communication efficiency. In this embodiment, before sending a communication data frame according to preset data to be sent, a sending device may obtain carrier frequencies according to a preset carrier frequency hopping sequence, and send the data frame according to the carrier frequencies, so as to improve communication efficiency.
As an optional implementation manner of the present invention, before the sending device sends the first communication data frame to be sent according to the preset data frame to be sent, the method further includes: and after the sending device receives the ACK frame, the sending device sends a first communication data frame to be sent according to a preset data frame to be sent. In this optional embodiment, after receiving the ACK frame sent by the receiving apparatus, the sending apparatus may confirm that the communication data frame to be sent, which is sent according to the preset data frame to be sent this time, has been successfully received and verified by the receiving apparatus, and may start the next sending operation, thereby reducing the number of interactions between the sending apparatus and the receiving apparatus.
As an optional implementation manner of this embodiment, the sending apparatus sets the maximum retransmission number of the data frame to be sent to be three times, that is, if the ACK frame is not received after the data frame to be sent is sent three times according to the preset data frame to be sent, the data frame to be sent is not retransmitted again. The sending device sets the maximum retransmission times, thereby avoiding the waste of communication resources caused by continuously retransmitting the preset data frame to be sent when the ACK frame is not received.
With the data frame communication method provided in this embodiment, before the receiving device in step 101 in embodiment 1 receives the third communication data frame, the transmitting device transmits the first to third communication data frames to be transmitted according to the preset data frame to be transmitted, and repeatedly transmits the communication data frame to be transmitted when the maximum retransmission number is not reached and the ACK frame is not received, so that the receiving device can receive the communication data frame repeatedly transmitted by the transmitting device when the received communication data frame is not checked to pass, and transmit the ACK frame to the transmitting device until the check passes, thereby reducing the number of interactions between the transmitting device and the receiving device. After receiving the third communication data frame, if the third communication data frame is checked to be wrong, the receiving device caches the received third communication data frame, probability calculation is carried out on data bits of corresponding bit positions of all cached communication data frames, data bits with high probability in each bit position are used for forming correction frame data, the correction frame data are checked, if the correction frame data pass the verification, an ACK frame is sent to the sending device.
Example 3
The present embodiment provides a data frame receiving apparatus 300, which can be applied to the field of power line communication or the field of network communication, and the system corresponds to the data frame receiving method in embodiment 1 one to one, and the same parts are not repeated herein, and only briefly described, in an implementation manner of the present embodiment, specific operations performed by each unit in the data frame receiving apparatus 300 may refer to embodiment 1.
Fig. 3 is a data frame receiving apparatus 300 according to the present embodiment, including: a receiving module 301, a checking module 302, a buffering module 303, a calculating module 304 and an ACK frame transmitting module 305, wherein,
the receiving module 301 is configured to receive a third communication data frame, and send the third communication data frame to the checking module 302, where the communication data frame includes a frame header, frame data, and a frame tail, the frame data includes N data bits, and the frame tail includes checking data, where N is a positive integer and N is greater than or equal to 1;
a checking module 302, configured to extract checking data and frame data of the third communication data frame after receiving the third communication data frame sent by the receiving module 301, and perform a checking operation on the frame data according to the checking data; if the check is wrong, the third communication data frame is sent to the cache module 303;
a buffer module 303, configured to buffer a third communication data frame, and buffer a first communication data frame and a second communication data frame;
a calculating module 304, configured to obtain the buffered first communication data frame, the second communication data frame, and the third communication data frame, and extract N data bits of frame data in the first communication data frame, N data bits of frame data in the second communication data frame, and N data bits of frame data in the third communication data frame, respectively; the first communication data frame and the second communication data frame are communication data frames which are cached in the caching module 303 after the data frame receiving device 300 checks errors, and the first communication data frame, the second communication data frame and the third communication data frame are sent by the data frame sending device according to the same preset data frame to be sent; obtaining the 1 st bit to the nth bit of the correction frame data through a preset calculation mode, wherein the preset calculation mode is that data bits, which are positioned at the ith bit of the frame data in the first communication data frame, the second communication data frame and the third communication data frame, are respectively obtained, three data bits are obtained in total, the probabilities of the data bit 1 and the data bit 0 in the three data bits are calculated, and the data bit with the high probability is set as the ith bit of the correction frame data, wherein i is 1, … …, N; sending the corrected frame data to a verification module 302;
the checking module 302 is further configured to receive the correction frame data, perform a checking operation on the correction frame data by using the checking data, and notify the ACK frame sending module 305 if the checking is correct;
an ACK frame sending module 305, configured to send an ACK frame to the data frame sending apparatus.
In an optional implementation manner of this embodiment, the frame header further includes data synchronization header information and physical address information; the data frame receiving device further comprises a judging module (not shown); and the judging module is used for judging whether the frame header in the third communication data frame contains data synchronization header information or not before the verifying module extracts the verifying data and the frame data of the third communication data frame, judging whether the physical address information is correct or not, and if the frame header contains the data synchronization header information and the physical address information is correct, executing the operation of extracting the verifying data and the frame data of the third communication data frame. The data frame receiving device 300 can identify that a data frame is currently started to be received, and can determine the initial position or time of frame data in the received data frame, and furthermore, the data frame receiving device 300 can also obtain the carrier frequency of data transmission of the sending device through the synchronization header information, and after the carrier frequency of the data transmission of the sending device is obtained through analyzing the synchronization header information, the data frame is received by adopting the carrier frequency; the physical address information is the target data frame receiving device 300 marked with the communication data frame, and after the data frame receiving device 300 receives the communication data frame, whether the target data frame receiving device 300 of the currently received communication data frame is the data frame receiving device 300 can be judged by analyzing whether the physical address information is matched with the physical address information of the data frame receiving device 300. In this optional embodiment, before the data frame receiving device 300 checks the frame data of the ith communication data frame, the determining module verifies the synchronization header information and the physical address information first, so as to avoid verifying invalid data or erroneously received data, thereby improving the verification efficiency.
With the data frame receiving apparatus 300 of this embodiment, after receiving the third communication data frame, if the data frame receiving apparatus 300 checks the error, the received third communication data frame is buffered, performing probability calculation on data bits of corresponding bits of all buffered communication data frames, using data bits with high probability in each bit to form correction frame data, and checking the corrected frame data, if the verification is passed, sending an ACK frame to a sending device, when the communication data frames received by the data frame receiving device 300 can not be checked, the corrected frame data is obtained through calculation and verified, so that the problem that the whole communication data frame is checked incorrectly due to the fact that a certain bit or a plurality of bits of data in the frame data are wrong in the transmission or decoding process is solved, the probability of correct checking is improved, and the retransmission times of the transmitting device are reduced.
Example 4
The present embodiment provides a data frame communication system 400, which can be applied in the field of power line communication or the field of network communication, and the system corresponds to the data frame communication method in embodiment 2 one to one, and the same parts are not repeated herein, and only briefly described, in an implementation manner of the present embodiment, specific operations performed by each unit in the data frame communication system 400 may refer to embodiment 2.
Fig. 4 is a data frame communication system 400 of the present embodiment, which includes a data frame transmitting apparatus 401 and a data frame receiving apparatus 402, where the data frame receiving apparatus 402 includes: a receiving module 4021, a checking module 4022, a buffering module 4023, a calculating module 4024, and an ACK frame sending module 4025, where the functions of the modules of the data frame receiving apparatus 402 correspond to those of the data frame receiving apparatus 300 in embodiment 3, and only the reference numerals are different, and the specific operations performed by the modules may refer to embodiment 3, which is not described herein again.
The data frame transmitting apparatus 401 includes: a transmitting module 4011 and an ACK frame receiving module 4012, wherein,
a sending module 4011, configured to send a first communication data frame to be sent according to a preset data frame to be sent, if the ACK frame receiving module 4012 does not receive an ACK frame within a preset time, send a second communication data frame to be sent according to the preset data frame to be sent, and if the ACK frame receiving module 4012 does not receive an ACK frame within the preset time, send a third communication data frame to be sent according to the preset data frame to be sent;
an ACK frame receiving module 4012, configured to receive the ACK frame and notify the sending module 4011.
In an optional implementation manner of this embodiment, the sending module 4011 is further configured to obtain a first carrier frequency according to a preset carrier frequency hopping sequence, and send a first communication data frame to be sent according to the first carrier frequency; acquiring a second carrier frequency according to a preset carrier frequency hopping sequence, and transmitting a second communication data frame to be transmitted according to the first carrier frequency; and obtaining a third carrier frequency according to a preset carrier frequency hopping sequence, and sending a third communication data frame to be sent according to the third carrier frequency. In this optional embodiment, the data frame transmitting apparatus 401 may pre-store a carrier frequency hopping sequence list, perform frequency hopping according to the carrier frequency hopping sequence in the list before completing transmission of the communication data frame to be transmitted, and complete the transmission operation using the hopped frequency. The data frame transmitting device 401 transmits the communication data frame by using the converted carrier frequency, thereby avoiding the situation that the data frame transmitting device 401 and the data frame receiving device 402 cannot complete communication when the data frame receiving device 402 cannot receive signals of a specific carrier frequency, and improving the communication efficiency. In this embodiment, before the sending module 4011 sends the communication data frame according to the preset data to be sent, the sending module 4011 may obtain the carrier frequency according to the preset carrier frequency hopping sequence, and send the communication data frame according to the carrier frequency, so as to improve the communication efficiency.
Through the data frame communication system 400 provided in this embodiment, the data frame sending device 401 sends the first to third communication data frames to be sent according to the preset data frame to be sent, and repeatedly sends the communication data frame to be sent when the maximum retransmission number is not reached and the ACK frame is not received, so that the data frame receiving device 402 can receive the communication data frame repeatedly sent by the data frame sending device 401 when the check on the received communication data frame is not passed, and send the ACK frame to the data frame sending device 401 until the check is passed, thereby reducing the number of interactions between the data frame sending device 401 and the data frame receiving device 402. After receiving the third communication data frame, if the data frame receiving device 402 checks the error, it buffers the received third communication data frame, performing probability calculation on data bits of corresponding bits of all buffered communication data frames, using data bits with high probability in each bit to form correction frame data, the corrected frame data is checked, and if the verification is passed, an ACK frame is transmitted to the data frame transmitting apparatus 401, and through the above-described system, when the communication data frames received by the data frame receiving device 402 cannot be checked, the corrected frame data is calculated and verified, so that the problem that the whole communication data frame is checked incorrectly due to the error of a certain bit or bits in the frame data in the transmission or decoding process is solved, the probability of correct checking is improved, and the retransmission times of the data frame sending device 401 are reduced.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A data frame receiving method, comprising:
the receiving device receives a third communication data frame, wherein the communication data frame comprises a frame head, frame data and a frame tail, the frame data comprises N data bits, the frame tail comprises check data, N is a positive integer and is more than or equal to 1;
after the receiving device receives the third communication data frame, extracting the check data and the frame data of the third communication data frame, and performing check operation on the frame data according to the check data;
if the check is wrong, caching the third communication data frame;
the receiving device acquires a first communication data frame, a second communication data frame and a third communication data frame which are cached, and respectively extracts N data bits of frame data in the first communication data frame, N data bits of frame data in the second communication data frame and N data bits of frame data in the third communication data frame; the first communication data frame and the second communication data frame are the communication data frames cached after the receiving device checks errors, and the first communication data frame, the second communication data frame and the third communication data frame are sent by a sending device according to the same preset data frame to be sent;
obtaining the 1 st bit to the nth bit of the correction frame data through a preset calculation mode, wherein the preset calculation mode is that data bits located at the ith bit of the frame data in the first communication data frame, the second communication data frame and the third communication data frame are respectively obtained, three data bits are obtained in total, the probabilities of the data bit 1 and the data bit 0 in the three data bits are calculated, and the data bit with the high probability is set as the ith bit of the correction frame data, wherein i is 1, … …, N;
using the check data to check the correction frame data, and if the check is correct, sending an ACK frame to a sending device;
wherein:
the frame header also comprises data synchronization header information and physical address information;
before the receiving device extracts the check data and the frame data of the third communication data frame, the method further includes:
the receiving device judges whether the frame header in the third communication data frame contains the data synchronization header information or not and judges whether the physical address information is correct or not, and if the frame header in the third communication data frame contains the data synchronization header information and the physical address information is correct, the operation of extracting the check data and the frame data of the third communication data frame is executed;
the receiving device obtains the carrier frequency of data transmission of the sending device through the synchronization header information, and receives the data frame by adopting the carrier frequency after obtaining the carrier frequency of the data transmission of the sending device through analyzing the synchronization header information.
2. A data frame communication method comprising the data frame receiving method of claim 1, and further comprising, before the receiving device receives a third communication data frame:
the sending device sends a first communication data frame to be sent according to a preset data frame to be sent, if the ACK frame is not received in a preset time, the sending device sends a second communication data frame to be sent according to the preset data frame to be sent, and if the ACK frame is not received in the preset time, the sending device sends a third communication data frame to be sent according to the preset data frame to be sent.
3. The method of claim 2,
before the sending device sends the first communication data frame to be sent according to the preset data frame to be sent, the method further includes: acquiring a first carrier frequency according to a preset carrier frequency hopping sequence, and transmitting the first communication data frame to be transmitted according to the first carrier frequency;
before the sending device sends the second communication data frame to be sent according to the preset data frame to be sent, the method further includes: obtaining a second carrier frequency according to a preset carrier frequency hopping sequence, and sending the second communication data frame to be sent according to the first carrier frequency;
before the sending device sends a third communication data frame to be sent according to a preset data frame to be sent, the method further includes: and obtaining a third carrier frequency according to a preset carrier frequency hopping sequence, and sending the third communication data frame to be sent according to the third carrier frequency.
4. A data frame receiving apparatus, comprising: a receiving module, a checking module, a buffer module, a calculating module and an ACK frame sending module, wherein,
the receiving module is used for receiving a third communication data frame and sending the third communication data frame to the checking module, wherein the communication data frame comprises a frame head, frame data and a frame tail, the frame data comprises N data bits, and the frame tail comprises checking data, wherein N is a positive integer and is more than or equal to 1;
the checking module is configured to, after receiving the third communication data frame sent by the receiving module, extract the checking data and the frame data of the third communication data frame, and perform a checking operation on the frame data according to the checking data; if the checking is wrong, the third communication data frame is sent to the cache module;
the buffer module is used for buffering the third communication data frame and buffering a first communication data frame and a second communication data frame;
the calculation module is configured to obtain the buffered first communication data frame, the buffered second communication data frame, and the buffered third communication data frame, and extract N data bits of frame data in the first communication data frame, N data bits of frame data in the second communication data frame, and N data bits of frame data in the third communication data frame, respectively; the first communication data frame and the second communication data frame are the communication data frames cached by the cache module after the data frame receiving device checks errors, and the first communication data frame, the second communication data frame and the third communication data frame are sent by the data frame sending device according to the same preset data frame to be sent; obtaining the 1 st bit to the nth bit of the correction frame data through a preset calculation mode, wherein the preset calculation mode is that data bits located at the ith bit of the frame data in the first communication data frame, the second communication data frame and the third communication data frame are respectively obtained, three data bits are obtained in total, the probabilities of the data bit 1 and the data bit 0 in the three data bits are calculated, and the data bit with the high probability is set as the ith bit of the correction frame data, wherein i is 1, … …, N; sending the correction frame data to the verification module;
the checking module is further configured to receive the correction frame data, perform a checking operation on the correction frame data by using the checking data, and notify the ACK frame sending module if the checking is correct;
the ACK frame sending module is used for sending an ACK frame to the data frame sending device;
the frame header also comprises data synchronization header information and physical address information;
the data frame receiving device also comprises a judging module;
the determining module is configured to determine whether the frame header in the third communication data frame includes the data synchronization header information and determine whether the physical address information is correct before the verifying module extracts the verifying data and the frame data of the third communication data frame, and if the frame header in the third communication data frame includes the data synchronization header information and the physical address information is correct, execute an operation of extracting the verifying data and the frame data of the third communication data frame;
the receiving device is specifically configured to identify that a data frame starts to be received currently, determine an initial position or time of frame data in the received data frame, obtain a carrier frequency of data transmission of the transmitting device through the synchronization header information, and receive the data frame by using the carrier frequency after obtaining the carrier frequency of the data transmission of the transmitting device through analyzing the synchronization header information.
5. A data frame communication system comprising the data frame receiving apparatus of claim 4 and a data frame transmitting apparatus, the data frame transmitting apparatus comprising: a sending module and an ACK frame receiving module, wherein,
the sending module is configured to send a first communication data frame to be sent according to a preset data frame to be sent, send a second communication data frame to be sent according to the preset data frame to be sent if the ACK frame is not received by the ACK frame receiving module within a preset time, and send a third communication data frame to be sent according to the preset data frame to be sent if the ACK frame is not received by the ACK frame receiving module within the preset time;
and the ACK frame receiving module is used for receiving the ACK frame and informing the sending module.
6. The system of claim 5,
the sending module is further configured to obtain a first carrier frequency according to a preset carrier frequency hopping sequence, and send the first communication data frame to be sent according to the first carrier frequency; obtaining a second carrier frequency according to a preset carrier frequency hopping sequence, and sending the second communication data frame to be sent according to the first carrier frequency; and obtaining a third carrier frequency according to a preset carrier frequency hopping sequence, and sending the third communication data frame to be sent according to the third carrier frequency.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627263.8A CN112217599B (en) | 2019-07-12 | 2019-07-12 | Data frame receiving method and device, and communication method and system |
| PCT/CN2020/093222 WO2021008248A1 (en) | 2019-07-12 | 2020-05-29 | Data frame reception method and device and communication method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627263.8A CN112217599B (en) | 2019-07-12 | 2019-07-12 | Data frame receiving method and device, and communication method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112217599A CN112217599A (en) | 2021-01-12 |
| CN112217599B true CN112217599B (en) | 2021-12-24 |
Family
ID=74047750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910627263.8A Active CN112217599B (en) | 2019-07-12 | 2019-07-12 | Data frame receiving method and device, and communication method and system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112217599B (en) |
| WO (1) | WO2021008248A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112948167B (en) * | 2021-03-31 | 2022-10-18 | 地平线征程(杭州)人工智能科技有限公司 | Protection circuit, method, device and computer readable storage medium for data path |
| CN113132070A (en) * | 2021-04-16 | 2021-07-16 | 中国电子科技集团公司第五十四研究所 | High-speed data transmission baseband data no-frame structure error code statistical system |
| CN113392060A (en) * | 2021-06-16 | 2021-09-14 | 天津津航计算技术研究所 | Universal serial port data receiving and processing method |
| CN114248820A (en) * | 2021-12-21 | 2022-03-29 | 卡斯柯信号有限公司 | Communication method of train control center and track circuit |
| CN115314155B (en) * | 2022-07-14 | 2024-01-09 | 东风电驱动系统有限公司 | Communication method, device, equipment and readable storage medium |
| CN115361095B (en) * | 2022-08-25 | 2024-04-16 | 上海纳恩汽车技术股份有限公司 | Data transmission method, intelligent key, device, control system and medium |
| CN115696446B (en) * | 2022-10-27 | 2024-04-16 | 南京威翔科技有限公司 | Signal transmission method of low-power-consumption fuze device |
| CN116846515B (en) * | 2023-07-07 | 2024-02-06 | 中国科学院空天信息创新研究院 | AOS frame effective data extraction method, device, equipment and medium |
| CN117336395B (en) * | 2023-12-01 | 2024-03-12 | 杭州乾景科技有限公司 | Underground communication data processing method and device and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8488716B2 (en) * | 2009-12-14 | 2013-07-16 | Lg Electronics Inc.. | Transmitting system and method of processing digital broadcast signal in transmitting system, receiving system and method of receiving digital broadcast signal in receiving system |
| CN104270155A (en) * | 2014-10-28 | 2015-01-07 | 积成电子股份有限公司 | Manchester code stream reception and anti-interference analysis method |
| CN104869545A (en) * | 2015-05-15 | 2015-08-26 | 哈尔滨海能达科技有限公司 | Transmission method, device and system for grouped data group call |
| CN105573958A (en) * | 2016-01-12 | 2016-05-11 | 西北工业大学 | Reliable data interaction method based on RS-422 serial bus technique |
| CN105847077A (en) * | 2016-03-17 | 2016-08-10 | 华为技术有限公司 | Method for detecting conflict of multipath serial data, and device and equipment |
| CN107070599A (en) * | 2017-04-06 | 2017-08-18 | 中国人民解放军理工大学 | A kind of long-distance link variable Rate selects repeating method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4764973B2 (en) * | 2005-12-09 | 2011-09-07 | 独立行政法人産業技術総合研究所 | CRC value calculation device |
| CN101051880B (en) * | 2006-04-07 | 2010-11-03 | 华为技术有限公司 | Transmitting, receiving and repeating method and its device for data frame |
| CN106330395A (en) * | 2016-08-23 | 2017-01-11 | 上海斐讯数据通信技术有限公司 | Wireless communication system and method, management frame retransmission device and method and frame structure |
-
2019
- 2019-07-12 CN CN201910627263.8A patent/CN112217599B/en active Active
-
2020
- 2020-05-29 WO PCT/CN2020/093222 patent/WO2021008248A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8488716B2 (en) * | 2009-12-14 | 2013-07-16 | Lg Electronics Inc.. | Transmitting system and method of processing digital broadcast signal in transmitting system, receiving system and method of receiving digital broadcast signal in receiving system |
| CN104270155A (en) * | 2014-10-28 | 2015-01-07 | 积成电子股份有限公司 | Manchester code stream reception and anti-interference analysis method |
| CN104869545A (en) * | 2015-05-15 | 2015-08-26 | 哈尔滨海能达科技有限公司 | Transmission method, device and system for grouped data group call |
| CN105573958A (en) * | 2016-01-12 | 2016-05-11 | 西北工业大学 | Reliable data interaction method based on RS-422 serial bus technique |
| CN105847077A (en) * | 2016-03-17 | 2016-08-10 | 华为技术有限公司 | Method for detecting conflict of multipath serial data, and device and equipment |
| CN107070599A (en) * | 2017-04-06 | 2017-08-18 | 中国人民解放军理工大学 | A kind of long-distance link variable Rate selects repeating method |
Non-Patent Citations (2)
| Title |
|---|
| "跳频/直接序列混合扩频数据链关键技术研究及实现";谌伟;《中国优秀硕士学位论文全文数据库（电子期刊）信息科技辑》;20131215;全文 * |
| Bin Zhu ; Defeng Huang."Performance Analysis of Enhanced Verification-Based Decoding for Packet-Based LDPC Codes over Binary Symmetric Channel".《2011 IEEE Global Telecommunications Conference - GLOBECOM 2011》.2012, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112217599A (en) | 2021-01-12 |
| WO2021008248A1 (en) | 2021-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112217599B (en) | Data frame receiving method and device, and communication method and system | |
| EP2269338B1 (en) | Method and apparatus for selective combining and decoding of the multiple code blocks of a transport block | |
| US7003710B2 (en) | Communications method, communications apparatus and communications system using same communications apparatus | |
| US9622147B2 (en) | System and method for performing hybrid automatic repeat request (HARQ) in a WLAN system | |
| CN106031072A (en) | Harq frame data structure and method of transmitting and receiving with harq in systems using blind detection | |
| KR19980042431A (en) | Communication unit and method using packet response | |
| CN114244780B (en) | Data transmission method, data transmission device and related equipment | |
| CN108933642B (en) | Downlink retransmission method based on code block grouping, base station and terminal | |
| CN106656424A (en) | Verification method of data transmission | |
| CN111752579A (en) | Bluetooth terminal upgrading method and device, storage medium and electronic equipment | |
| CN112217600A (en) | Data frame receiving method and device, and communication method and system | |
| CN112217601A (en) | Data frame communication method and system | |
| US9301162B2 (en) | Method, base station and system for managing resources | |
| CN114095117A (en) | Retransmission method and related device for Ethernet error frame | |
| CN115378556A (en) | Data retransmission method and equipment based on timeout | |
| CN107888326B (en) | Data transmission method and device | |
| CN104796181A (en) | Short-wave double-antenna digital communication system and automatic receiving verification method for the same | |
| CN113473503B (en) | NAS-based network parameter optimization processing system, terminal equipment and optimization method | |
| CN110431899B (en) | Demodulation method and device based on carrier aggregation | |
| CN116743324B (en) | Data transmission method, device, receiving end, storage medium, system and server | |
| CN113328833B (en) | Data transmission method, device and system | |
| US11451331B2 (en) | Bit error correction for Bluetooth low energy | |
| CN113055133B (en) | Hybrid automatic repeat request HARQ response method, device, equipment and medium | |
| US11068334B2 (en) | Method and system for enhancing communication reliability when multiple corrupted frames are received | |
| JP2001333048A (en) | Data transfer system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |