CN113872879B - Data transmission method, device, computer equipment and storage medium - Google Patents
Data transmission method, device, computer equipment and storage medium Download PDFInfo
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- CN113872879B CN113872879B CN202010607087.4A CN202010607087A CN113872879B CN 113872879 B CN113872879 B CN 113872879B CN 202010607087 A CN202010607087 A CN 202010607087A CN 113872879 B CN113872879 B CN 113872879B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
- H04L47/263—Rate modification at the source after receiving feedback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/25—Flow control; Congestion control with rate being modified by the source upon detecting a change of network conditions
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Abstract
The application relates to a data transmission method, a data transmission device, computer equipment and a storage medium. The method comprises the following steps: sequentially sending at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received; transmitting first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time; wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request. The method can improve the communication reliability of the medium wave communication system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, computer device, and storage medium.
Background
With the development of communication technology, a technology of medium wave communication has emerged, and medium wave refers to radio waves with a wavelength of 100-1000 meters, and is mainly used in broadcasting, navigation, communication, and the like. Medium wave propagation has some characteristics of both long wave and short wave propagation. It can propagate either along the diffraction of the ground surface or through ionospheric reflection.
However, in medium wave communication, the channel quality is extremely susceptible to the environment, for example, different periods, weather, environmental noise, and the like are all factors that affect the medium wave channel quality. When the medium wave channel quality becomes worse due to environmental influence, data transmission is prone to error, and communication reliability is not high. There is therefore a need for a method of ensuring the communication reliability of a medium wave communication system.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a data transmission method, apparatus, computer device, and storage medium capable of improving communication reliability of a medium wave communication system.
In a first aspect, a data transmission method is provided, which is used in a transmitting end in a medium wave communication system, where the medium wave communication system includes the transmitting end and a receiving end, and the method includes:
sequentially sending at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received;
transmitting first communication data to the receiving end according to a transmission rate used for transmitting the transmission request for the last time;
wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
In one embodiment, the sequentially sending at least one transmission request to the receiving end until receiving a transmission response sent by the receiving end and responding to the transmission request includes:
sending an ith transmission request to the receiving end, wherein i is a positive integer;
if the transmission response which is sent by the receiving end and responds to the ith transmission request is received within the first preset time period, stopping continuing to send the transmission request;
if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, the (i+1) th transmission request is continuously sent to the receiving end, wherein the transmission rate used for sending the (i+1) th transmission request is smaller than the transmission rate used for sending the (i) th transmission request.
In one embodiment, if the transmission response sent by the receiving end in response to the ith transmission request is not received within the first preset duration, the step of continuing to send the (i+1) th transmission request to the receiving end includes:
if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is not the minimum transmission rate available for use, the (i+1) th transmission request is continuously sent to the receiving end.
In one embodiment, the method further comprises:
if the transmission response, which is sent by the receiving end and responds to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is the minimum transmission rate available for use, stopping sending the transmission request, and reporting the communication failure information.
In one embodiment, after the first communication data is sent to the receiving end at the transmission rate used for the last transmission of the transmission request, the method further includes:
if receiving the reception success information sent by the receiving end within the second preset time, continuing to send second communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, wherein the reception success information is used for indicating that the receiving end successfully receives the first communication data.
In one embodiment, after the first communication data is sent to the receiving end at the transmission rate used for the last transmission of the transmission request, the method further includes:
and if receiving the receiving failure information sent by the receiving end within the second preset time, resending the first communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, wherein the receiving failure information is used for indicating that the receiving end does not successfully receive the first communication data.
In one embodiment, the first communication data includes a plurality of data packets, the reception failure information includes packet indication information, the packet indication information is used to indicate a data packet that is not successfully received by the receiving end in the first communication data, and the retransmitting the first communication data to the receiving end according to a transmission rate used for transmitting the transmission request last time includes:
and re-transmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time according to the data packet indication information.
In one embodiment, the retransmitting, to the receiving end, the data packet in the first communication data that is not successfully received by the receiving end according to the transmission rate used for transmitting the transmission request last time includes:
detecting the retransmission times of the data packet which is not successfully received by the receiving end in the first communication data;
and if the retransmission times are smaller than a preset times threshold, retransmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time.
In one embodiment, the method further comprises:
if the retransmission times is greater than or equal to the preset times threshold, stopping to continuously retransmit the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time, and reporting the communication failure information.
In a second aspect, a data transmission apparatus is provided, which is used in a transmitting end in a medium wave communication system, the medium wave communication system including the transmitting end and a receiving end, the apparatus comprising:
the first sending module is used for sequentially sending at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and responds to the transmission request is received;
the second sending module is used for sending the first communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time; wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
In a third aspect, a computer device is provided, comprising a memory storing a computer program and a processor implementing the following steps when the computer program is executed:
Sequentially sending at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received;
transmitting first communication data to the receiving end according to a transmission rate used for transmitting the transmission request for the last time;
wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
In a fourth aspect, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
sequentially sending at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received;
transmitting first communication data to the receiving end according to a transmission rate used for transmitting the transmission request for the last time;
wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
The data transmission method, the data transmission device, the computer equipment and the storage medium sequentially send at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received; then, first communication data is sent to the receiving end according to the transmission rate used for sending the transmission request for the last time; wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request. Because the sending end can sequentially try different transmission rates and starts to try from a larger transmission rate, when the larger transmission rate is used for sending a transmission request to the receiving end and a transmission response responded by the receiving end can be received, the channel quality of the current medium wave communication is proved to be better and the larger transmission rate is supported, so that the transmission of communication data can be rapidly completed under the condition of better channel quality; when a transmission request is sent to the receiving end by using a larger transmission rate, but a transmission response sent by the receiving end is not received, the current channel quality is proved to be insufficient to support the current transmission rate, so that the sending end sequentially selects a lower transmission rate to continue to try until the transmission response sent by the receiving end can be received, and then the transmission of communication data is completed by using the current transmission rate. In the whole process, when the channel quality is better, a higher transmission rate is selected, the transmission of communication data can be rapidly completed on the premise of ensuring the communication reliability, and when the channel quality is poorer, a lower transmission rate is selected, and because the signal detection capability and the noise resistance of the lower transmission rate are stronger, the communication data can still be reliably transmitted when the channel quality is poorer. Therefore, the data transmission method provided by the application can simultaneously consider transmission efficiency and transmission reliability by sequentially trying transmission rates with different sizes, and greatly improves the communication reliability of the medium wave communication system.
Drawings
FIG. 1 is a diagram of an application environment for a data transmission method in one embodiment;
FIG. 2 is a flow chart of a data transmission method in one embodiment;
FIG. 3 is a flow chart of a method for sequentially sending at least one transmission request to the receiving end in a data transmission method in one embodiment until a transmission response sent by the receiving end in response to the transmission request is received;
FIG. 4 is a flow chart of a method for retransmitting a data packet in the first communication data that was not successfully received by the receiving end to the receiving end according to a transmission rate used for transmitting the transmission request last time in the data transmission method according to an embodiment;
FIG. 5 is a block diagram of a data transmission device in one embodiment;
FIG. 6 is a block diagram of a data transmission device in another embodiment;
fig. 7 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The data transmission method provided by the application can be applied to an application environment shown in fig. 1. The sending end 101 and the receiving end 102 may establish a communication connection in a wired or wireless manner, where the sending end 101 may sequentially send at least one transmission request to the receiving end 102 until a transmission response sent by the receiving end 102 and responding to the transmission request is received; then the transmitting end 101 transmits the first communication data to the receiving end 102 according to the transmission rate used for transmitting the transmission request for the last time; wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request. Among them, the transmitting end 101 and the receiving end 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In an embodiment of the present application, as shown in fig. 2, a data transmission method is provided, and the method is applied to the transmitting end in fig. 1 for illustration, and includes the following steps:
step 201, the transmitting end sequentially transmits at least one transmission request to the receiving end until a transmission response, which is sent by the receiving end and responds to the transmission request, is received.
In this step, the transmitting end firstly sends a transmission request to the receiving end to confirm whether the transmitting end and the receiving end can be connected in communication or not in order to transmit data with the receiving end, if the transmitting end can receive a transmission response of the receiving end responding to the transmission request after sending the data transmission request, the transmitting end and the receiving end can be proved to be connected in communication,
optionally, the transmitting end may sequentially send a plurality of transmission requests to the receiving end, and then determine which of the sent transmission requests may receive a corresponding transmission response from the receiving end. Or, the transmitting end may wait for whether the transmitting end can receive the transmission response sent by the receiving end and responding to the current transmission request after sending one transmission request at a time.
Step 202, a transmitting end transmits first communication data to a receiving end according to a transmission rate used for transmitting the transmission request for the last time; wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
Based on the above step 201, in this step, the process that the transmitting end sequentially transmits the plurality of transmission requests is that the transmission rate used for each transmission request is smaller than the transmission rate used for the last transmission request. That is, the transmission requests are sequentially transmitted in accordance with the deceleration process.
Specifically, it may be preset which available transmission rates include, and then the available transmission rates are sorted into a list according to the order from large to small, and the sending end starts from the first transmission rate in the list, and sequentially uses different transmission rates to send a transmission request to the receiving end according to the order of the list; or the transmission rate adopted each time is preset to be reduced by a value compared with the previous time.
When the transmitting end transmits a transmission request to the receiving end according to the transmission rate from large to small, it is determined whether the transmission request transmitted by using the current transmission rate can receive the transmission response responded by the receiving end, if the transmission request transmitted by a certain transmission rate can receive the transmission response, the transmitting end stops transmitting the transmission request to the receiving end by continuing to use other transmission rates (smaller transmission rates), and the current transmission rate becomes the last used transmission rate. The whole process is equivalent to determining the maximum transmission rate which can be used for data transmission between the sending end and the receiving end. After determining the maximum transmission rate at which data transmission is possible between the transmitting end and the receiving end, the transmitting end transmits the first communication data to the receiving end using the transmission rate.
In the data transmission method, at least one transmission request is sequentially sent to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received; then, first communication data is sent to the receiving end according to the transmission rate used for sending the transmission request for the last time; wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request. Because the sending end can sequentially try different transmission rates and starts to try from a larger transmission rate, when the larger transmission rate is used for sending a transmission request to the receiving end and a transmission response responded by the receiving end can be received, the channel quality of the current medium wave communication is proved to be better and the larger transmission rate is supported, so that the transmission of communication data can be rapidly completed under the condition of better channel quality; when a transmission request is sent to the receiving end by using a larger transmission rate, but a transmission response sent by the receiving end is not received, the current channel quality is proved to be insufficient to support the current transmission rate, so that the sending end sequentially selects a lower transmission rate to continue to try until the transmission response sent by the receiving end can be received, and then the transmission of communication data is completed by using the current transmission rate. In the whole process, when the channel quality is better, a higher transmission rate is selected, the transmission of communication data can be rapidly completed on the premise of ensuring the communication reliability, and when the channel quality is poorer, a lower transmission rate is selected, and because the signal detection capability and the noise resistance of the lower transmission rate are stronger, the communication data can still be reliably transmitted when the channel quality is poorer. Therefore, the data transmission method provided by the application can simultaneously consider transmission efficiency and transmission reliability by sequentially trying transmission rates with different sizes, and greatly improves the communication reliability of the medium wave communication system.
In this embodiment of the present application, please refer to fig. 3, a method for sequentially sending at least one transmission request to the receiving end in a data transmission method until a transmission response sent by the receiving end and responding to the transmission request is received is provided, where the method includes:
in step 301, the transmitting end sends the ith transmission request to the receiving end, where i is a positive integer.
In this step, the transmission rate used by the transmitting end for each transmission of the transmission request is different, the transmitting end sequentially tries to transmit the transmission request to the receiving end at a plurality of different transmission rates, and the transmission rate used each time is smaller than the transmission rate used last time. For example, the transmission rate used by the 2 nd transmission request sent by the sender is smaller than the transmission rate used by the 1 st transmission request.
Step 302, if a transmission response sent by the receiving end in response to the ith transmission request is received within the first preset duration, the sending end stops sending the transmission request continuously.
After the transmitting end transmits the transmission request by using the corresponding transmission rate each time, the transmitting end judges whether the transmission response of the receiving end responding to the transmission request can be received within the first preset time period, and if the transmission response can be received, the transmitting end and the receiving end can be proved to use the currently used transmission rate to transmit data. The sender will not continue to attempt to send transmission requests using other smaller transmission rates.
Step 303, if the transmission response sent by the receiving end in response to the ith transmission request is not received within the first preset duration, the sending end continues to send the (i+1) th transmission request to the receiving end, where the transmission rate used for sending the (i+1) th transmission request is smaller than the transmission rate used for sending the (i) th transmission request.
However, if the transmitting end does not receive the transmission response responded by the receiving end within the first preset time after the transmitting end transmits the transmission request by using the corresponding transmission rate, it is proved that the channel quality between the transmitting end and the receiving end does not support the current transmission rate, and then the transmitting end can select to transmit the next transmission request. For example, the transmitting end firstly transmits the 1 st transmission request to the receiving end, but does not receive the transmission response of the receiving end within the first preset duration; therefore, the transmitting end will continue to send the 2 nd transmission request to the receiving end. Wherein the transmission rate used to transmit the 2 nd transmission request is less than the transmission rate used to transmit the 1 st transmission request.
In the embodiment of the application, the waiting time length is set for the sending end by setting the first preset time length, so that the sending end can conveniently judge whether to send the transmission request next time, and the efficiency of the data transmission method is improved.
In an embodiment of the present application, the data transmission method includes: if the transmitting end does not receive the transmission response which is sent by the receiving end and is in response to the ith transmission request within the first preset time period, and the transmission rate used by the transmitting end for sending the ith transmission request is not the minimum transmission rate which can be used, the transmitting end continues to send the (i+1) th transmission request to the receiving end.
If the transmitting end does not receive the transmission response which is sent by the receiving end and is in response to the ith transmission request within the first preset time period, and the transmission rate used by the transmitting end for sending the ith transmission request is the minimum transmission rate which can be used, the transmitting end stops continuously sending the transmission request and reports the communication failure information.
In this embodiment of the present application, after the sender sends the ith transmission request, no transmission response sent by the sender is received within a first preset duration, and then the sender may choose to send the ith+1st transmission request to the receiver. Since the transmission rate used to transmit the i+1th transmission request is smaller than the transmission rate used to transmit the i+1th transmission request, it is necessary to determine whether there is still a transmission rate available for transmitting the i+1th transmission request before transmitting the i+1th transmission request. Specifically, whether the transmission rate used for sending the ith transmission request is the minimum transmission rate available for use or not can be judged, if not, it proves that other available smaller transmission rates exist currently, and then the (i+1) th transmission request can be sent by using the smaller transmission rate; if so, the sender can stop sending the transmission request and feed back the communication failure information, wherein the sender proves that no other available smaller transmission rate is available.
The specific procedure for determining whether the transmission rate used for sending the ith transmission request is the minimum transmission rate available for use is as follows: for example, different transmission rates are arranged into a list according to the size in advance, and then the last transmission rate in the list is the minimum transmission rate available; alternatively, a threshold value of the minimum transmission rate, which is the minimum transmission rate available for use, is set.
In the embodiment of the application, whether the (i+1) th transmission request is to be sent is determined by determining whether the transmission rate used for sending the (i) th transmission request is the minimum transmission rate available for use, so that the sending end can be prevented from sending invalid transmission requests, and the efficiency of data transmission is improved.
In an embodiment of the present application, after the step 202, the data transmission method further includes: if the sending end receives the receiving success information sent by the receiving end within the second preset time, the sending end continues to send the second communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, and the receiving success information is used for indicating that the receiving end successfully receives the first communication data.
In this embodiment of the present application, data transmission is performed between the transmitting end and the receiving end, and the transmitted data may be divided into a plurality of batches for transmission, and after the first communication data is transmitted, if a reception success message sent by the receiving end is received within a second preset duration, it is indicated that the first communication data has been successfully received by the receiving end correctly, and then the transmitting end may continue to send the second communication data to the receiving end by using the current transmission rate. The first communication data and the second communication data mentioned here refer to different batches of communication data.
In the embodiment of the application, the sending end can clearly determine the specific waiting time by setting the second preset time, so that the sending end can conveniently judge whether to perform the next action of continuing to send the second communication data, invalid waiting is avoided, and the efficiency of data transmission is improved.
In an embodiment of the present application, after the step 202, the data transmission method further includes: if the sending end receives the receiving failure information sent by the receiving end within the second preset time, the sending end resends the first communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, and the receiving failure information is used for indicating that the receiving end does not successfully receive the first communication data.
In this embodiment of the present application, if the first communication data is not successfully received by the receiving end, the receiving end may send reception failure information to the transmitting end, and the transmitting end may retransmit the first communication data after receiving the reception failure information. Or after the sending end finishes sending the first communication data, if any feedback information sent by the receiving end is not received within the second preset time length, the sending end can select to resend the first communication data.
In the embodiment of the application, the receiving end feeds back the receiving failure information, and the sending end resends the first communication data, so that the reliability of data transmission is ensured.
In this embodiment of the present application, the first communication data includes a plurality of data packets, the reception failure information includes data packet indication information, where the data packet indication information is used to indicate a data packet in the first communication data that is not successfully received by the receiving end, and the retransmitting the first communication data to the receiving end according to a transmission rate used for transmitting the transmission request last time specifically includes: and the transmitting end re-transmits the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time according to the data packet indication information.
In this embodiment of the present application, the transmitting end may send a plurality of data packets to the receiving end at a time, for example, the first communication data may include a plurality of data packets. When the receiving end receives the first communication data, if some packets of the first communication data have receiving errors, the receiving end feeds back receiving error information to the sending end, the receiving error information indicates which data packets are not successfully received, and then the sending end can send the data packets which are not successfully received to the receiving end again.
In the embodiment of the application, the receiving end feeds back the receiving failure information, determines which data packets need to be retransmitted according to the data packet indication information in the receiving failure information, and then retransmits the data packets needing to be retransmitted to the receiving end, so that the retransmission process of the data is more accurate, the transmission of unnecessary data packets is avoided, and the efficiency of data transmission is improved.
In this embodiment of the present application, please refer to fig. 4, a method for retransmitting, to the receiving end, a data packet in the first communication data that is not successfully received by the receiving end according to a transmission rate used for transmitting the transmission request last time in a data transmission method is provided, where the method includes:
In step 401, the transmitting end detects the retransmission times of the data packet in the first communication data, which is not successfully received by the receiving end.
Step 402, if the retransmission number is smaller than the preset number threshold, the transmitting end retransmits the data packet in the first communication data, which is not successfully received by the receiving end, to the receiving end according to the transmission rate used for transmitting the transmission request for the last time.
In this embodiment of the present application, in a process that a transmitting end resends first communication data to a receiving end, the transmitting end records resending times, then determines whether the resending times are smaller than a preset times threshold, and if so, the transmitting end sends a data packet in the first communication data, which is not successfully received by the receiving end, to the receiving end again. If the data packet is greater than or equal to the preset time threshold, the sending end stops sending the data packet which is not successfully received by the receiving end in the first communication data to the receiving end again according to the transmission rate used for sending the transmission request for the last time, and reports the communication failure information.
In the embodiment of the application, the retransmission times are recorded and compared with the preset times threshold, when the retransmission times are smaller than the preset times threshold, the data packet which is not successfully received in the first communication data is continuously transmitted to the receiving end again, and when the retransmission times are larger than the preset times threshold, the continuous transmission is stopped. Therefore, the waste of time resources and communication resources caused by too many times of repeated transmission of the unsuccessfully received data packets can be avoided, and the efficiency of data transmission is improved.
The above embodiments are combined to provide a comprehensive embodiment for explaining the data transmission method provided in the present application.
In the medium wave communication system, a transmitting end firstly tries to transmit a transmission request to a receiving end by using transmission rates which are different from large to small, when the transmission request is transmitted to the receiving end by using a certain transmission rate and a transmission response of the receiving end responding to the transmission request is received within a first preset time period, the transmitting end stops trying to transmit the transmission request to the receiving end by using a smaller transmission rate and transmits first communication data to the receiving end by using a current transmission rate. However, if the receiving end does not receive the corresponding transmission response from the transmitting end within the first preset duration, the transmitting end may choose to use a smaller transmission rate to continue to transmit the transmission request, but when the transmitting end uses the minimum transmission rate available for use to transmit the transmission request to the receiving end, but does not receive the transmission response within the first preset duration, the transmitting end may stop to continue to transmit the transmission request and feedback the communication failure information.
After the transmitting end transmits the first communication data to the receiving end by using the determined transmission rate in the process, if receiving the successful receiving information fed back by the receiving end within the second preset time, the transmitting end continues to transmit the second communication data by using the current transmission rate. If the receiving end receives the receiving failure information sent by the receiving end within the second preset time period or does not receive the receiving success information fed back by the receiving end within the second preset time period, the sending end can send the first communication data to the receiving end again by utilizing the current transmission rate, wherein when the receiving failure information indicates which data packets which are not successfully received are in the receiving failure information, the sending end can send the data packets which are not successfully received to the receiving end again. And in the retransmission process, the transmitting end records the retransmission times, when the retransmission times do not exceed the preset times threshold, the transmitting end continuously transmits the unsuccessfully received data packets to the receiving end again, when the retransmission times are greater than or equal to the preset times threshold, the transmitting end stops continuously transmitting the unsuccessfully received data packets to the transmitting end, and reports the communication failure information.
When the number of correct data packets received by the receiving end is equal to the total number of data packets to be sent, the receiving end can report the receiving end information to end the whole data transmission process.
It should be understood that, although the steps in the flowcharts of fig. 2 to 4 are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps of fig. 2-4 may include steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the steps or stages are performed necessarily occur sequentially, but may be performed alternately or alternately with other steps or at least a portion of the steps or stages in other steps.
In an embodiment of the present application, as shown in fig. 5, there is provided a data transmission apparatus 500 for use in a transmitting end in a medium wave communication system, where the medium wave communication system includes the transmitting end and a receiving end, the apparatus including: a first transmitting module 501 and a second transmitting module 502, wherein:
A first sending module 501, configured to send at least one transmission request to the receiving end in sequence until a transmission response sent by the receiving end and responding to the transmission request is received;
a second sending module 502, configured to send first communication data to the receiving end according to a transmission rate used for sending the transmission request for the last time; wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
In this embodiment of the present application, the first sending module 501 is specifically configured to: sending an ith transmission request to the receiving end, wherein i is a positive integer; if the transmission response which is sent by the receiving end and responds to the ith transmission request is received within the first preset time period, stopping continuing to send the transmission request; if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, the (i+1) th transmission request is continuously sent to the receiving end, wherein the transmission rate used for sending the (i+1) th transmission request is smaller than the transmission rate used for sending the (i) th transmission request.
In this embodiment of the present application, the first sending module 501 is specifically configured to: if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is not the minimum transmission rate available for use, the (i+1) th transmission request is continuously sent to the receiving end.
In this embodiment, please refer to fig. 6, another data transmission apparatus 600 is provided, where the data transmission apparatus 600 includes, in addition to the modules included in the data transmission apparatus 5600, a first stopping module 503, a third sending module 504, a fourth sending module 505, and a second stopping module 506, where the data transmission apparatus 600 further includes a first stopping module.
In this embodiment of the present application, the first stopping module 503 is configured to stop sending the transmission request continuously and report the communication failure information if the transmission response sent by the receiving end in response to the ith transmission request is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is the minimum transmission rate available for use.
In this embodiment of the present application, the third sending module 504 is configured to, if receiving the reception success information sent by the receiving end within the second preset duration, continue to send the second communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, where the reception success information is used to indicate that the receiving end successfully receives the first communication data.
In this embodiment of the present application, the fourth sending module 505 is configured to, if receiving the reception failure information sent by the receiving end within the second preset duration, resend the first communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, where the reception failure information is used to indicate that the receiving end did not successfully receive the first communication data.
In this embodiment of the present application, the first communication data includes a plurality of data packets, the reception failure information includes data packet indication information, the data packet indication information is used to indicate a data packet in the first communication data that is not successfully received by the receiving end, and the fourth sending module 505 is specifically configured to resend, according to the data packet indication information, a data packet in the first communication data that is not successfully received by the receiving end, to the receiving end according to a transmission rate used for sending the transmission request for the last time.
In this embodiment of the present application, the fourth sending module 505 is specifically configured to detect the retransmission times of the data packet in the first communication data that is not successfully received by the receiving end; and if the retransmission times are smaller than a preset times threshold, retransmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time.
In this embodiment of the present application, the second stopping module 506 is configured to stop sending, to the receiving end, the data packet in the first communication data that is not successfully received by the receiving end according to the transmission rate used for sending the transmission request for the last time again if the retransmission frequency is greater than or equal to the preset frequency threshold, and report the communication failure information.
For specific limitations of the data transmission device, reference may be made to the above limitation of the data transmission method, and no further description is given here. The respective modules in the above-described data transmission apparatus may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In the embodiment of the present application, a computer device is provided, which may be a terminal, and an internal structure diagram thereof may be shown in fig. 7. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a data transmission method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 7 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In an embodiment of the present application, there is provided a computer device including a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
sequentially sending at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received;
transmitting first communication data to the receiving end according to a transmission rate used for transmitting the transmission request for the last time;
wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
In an embodiment of the present application, the following steps are also implemented when the processor executes the computer program:
sending an ith transmission request to the receiving end, wherein i is a positive integer; if the transmission response which is sent by the receiving end and responds to the ith transmission request is received within the first preset time period, stopping continuing to send the transmission request; if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, the (i+1) th transmission request is continuously sent to the receiving end, wherein the transmission rate used for sending the (i+1) th transmission request is smaller than the transmission rate used for sending the (i) th transmission request.
In an embodiment of the present application, the following steps are also implemented when the processor executes the computer program:
if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is not the minimum transmission rate available for use, the (i+1) th transmission request is continuously sent to the receiving end.
In an embodiment of the present application, the following steps are also implemented when the processor executes the computer program:
if the transmission response, which is sent by the receiving end and responds to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is the minimum transmission rate available for use, stopping sending the transmission request, and reporting the communication failure information.
In an embodiment of the present application, the following steps are also implemented when the processor executes the computer program:
if receiving the reception success information sent by the receiving end within the second preset time, continuing to send second communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, wherein the reception success information is used for indicating that the receiving end successfully receives the first communication data.
In an embodiment of the present application, the following steps are also implemented when the processor executes the computer program:
and if receiving the receiving failure information sent by the receiving end within the second preset time, resending the first communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, wherein the receiving failure information is used for indicating that the receiving end does not successfully receive the first communication data.
In this embodiment of the present application, the first communication data includes a plurality of data packets, the reception failure information includes data packet indication information, and the data packet indication information is used to indicate a data packet in the first communication data that is not successfully received by the receiving end, and the processor further implements the following steps when executing the computer program:
and re-transmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time according to the data packet indication information.
In an embodiment of the present application, the following steps are also implemented when the processor executes the computer program:
detecting the retransmission times of the data packet which is not successfully received by the receiving end in the first communication data; and if the retransmission times are smaller than a preset times threshold, retransmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time.
In an embodiment of the present application, the following steps are also implemented when the processor executes the computer program:
if the retransmission times is greater than or equal to the preset times threshold, stopping to continuously retransmit the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time, and reporting the communication failure information.
In an embodiment of the present application, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
sequentially sending at least one transmission request to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received;
transmitting first communication data to the receiving end according to a transmission rate used for transmitting the transmission request for the last time;
wherein the transmission rate used for each transmission of the transmission request is smaller than the transmission rate used for the last transmission of the transmission request.
In an embodiment of the present application, the computer program when executed by the processor further implements the steps of:
sending an ith transmission request to the receiving end, wherein i is a positive integer; if the transmission response which is sent by the receiving end and responds to the ith transmission request is received within the first preset time period, stopping continuing to send the transmission request; if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, the (i+1) th transmission request is continuously sent to the receiving end, wherein the transmission rate used for sending the (i+1) th transmission request is smaller than the transmission rate used for sending the (i) th transmission request.
In an embodiment of the present application, the computer program when executed by the processor further implements the steps of:
if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is not the minimum transmission rate available for use, the (i+1) th transmission request is continuously sent to the receiving end.
In an embodiment of the present application, the computer program when executed by the processor further implements the steps of:
if the transmission response, which is sent by the receiving end and responds to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is the minimum transmission rate available for use, stopping sending the transmission request, and reporting the communication failure information.
In an embodiment of the present application, the computer program when executed by the processor further implements the steps of:
if receiving the reception success information sent by the receiving end within the second preset time, continuing to send second communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, wherein the reception success information is used for indicating that the receiving end successfully receives the first communication data.
In an embodiment of the present application, the computer program when executed by the processor further implements the steps of:
and if receiving the receiving failure information sent by the receiving end within the second preset time, resending the first communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, wherein the receiving failure information is used for indicating that the receiving end does not successfully receive the first communication data.
In this embodiment of the present application, the first communication data includes a plurality of data packets, the reception failure information includes data packet indication information, the data packet indication information is used to indicate a data packet in the first communication data that is not successfully received by the receiving end, and the computer program when executed by the processor further implements the following steps:
and re-transmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time according to the data packet indication information.
In an embodiment of the present application, the computer program when executed by the processor further implements the steps of:
detecting the retransmission times of the data packet which is not successfully received by the receiving end in the first communication data; and if the retransmission times are smaller than a preset times threshold, retransmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time.
In an embodiment of the present application, the computer program when executed by the processor further implements the steps of:
if the retransmission times is greater than or equal to the preset times threshold, stopping to continuously retransmit the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time, and reporting the communication failure information.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A data transmission method, which is used in a transmitting end in a medium wave communication system, wherein the medium wave communication system includes the transmitting end and a receiving end, the method comprising:
sequentially sending a plurality of transmission requests to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received;
transmitting first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time;
If receiving the receiving failure information sent by the receiving end within a second preset time period, resending the first communication data to the receiving end according to a transmission rate used for sending the transmission request for the last time, wherein the receiving failure information is used for indicating that the receiving end does not successfully receive the first communication data;
the transmission rate used for transmitting the transmission request each time is smaller than the transmission rate used for transmitting the transmission request last time, and the data transmitted between the transmitting end and the receiving end are transmitted in multiple batches;
the first communication data includes a plurality of data packets, the reception failure information includes data packet indication information, the data packet indication information is used for indicating a data packet which is not successfully received by the receiving end in the first communication data, and the first communication data is re-sent to the receiving end according to a transmission rate used for sending the transmission request for the last time, including:
detecting the retransmission times of the data packet which is not successfully received by the receiving end in the first communication data according to the data packet indication information;
and if the retransmission times are smaller than a preset times threshold, retransmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time.
2. The method according to claim 1, wherein sequentially sending a plurality of transmission requests to the receiving end until a transmission response sent by the receiving end in response to the transmission request is received, includes:
sending an ith transmission request to the receiving end, wherein i is a positive integer;
if the transmission response which is sent by the receiving end and responds to the ith transmission request is received within the first preset time period, stopping continuing to send the transmission request;
if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, the (i+1) th transmission request is continuously sent to the receiving end, wherein the transmission rate used for sending the (i+1) th transmission request is smaller than the transmission rate used for sending the (i) th transmission request.
3. The method of claim 2, wherein if a transmission response sent by the receiving end in response to the ith transmission request is not received within the first preset duration, continuing to send the (i+1) th transmission request to the receiving end, including:
if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is not the minimum transmission rate available for use, continuing to send the (i+1) th transmission request to the receiving end.
4. A method according to claim 3, characterized in that the method further comprises:
if the transmission response which is sent by the receiving end and responds to the ith transmission request is not received within the first preset duration, and the transmission rate used for sending the ith transmission request is the minimum transmission rate available for use, stopping continuing to send the transmission request, and reporting communication failure information.
5. The method of claim 1, wherein after the first communication data is transmitted to the receiving end at the transmission rate used for the last transmission of the transmission request, the method further comprises:
if receiving the reception success information sent by the receiving end within the second preset time, continuing to send second communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time, wherein the reception success information is used for indicating that the receiving end successfully receives the first communication data.
6. The method according to claim 1, wherein the method further comprises:
if the retransmission times are greater than or equal to the preset times threshold, stopping retransmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time, and reporting communication failure information.
7. A data transmission apparatus for use in a transmitting end in a medium wave communication system including the transmitting end and a receiving end, the apparatus comprising:
the first sending module is used for sequentially sending a plurality of transmission requests to the receiving end until a transmission response which is sent by the receiving end and is in response to the transmission request is received;
the second sending module is used for sending the first communication data to the receiving end according to the transmission rate used for sending the transmission request for the last time;
a fourth sending module, configured to, if receiving, within a second preset period of time, reception failure information sent by the receiving end, resend the first communication data to the receiving end according to a transmission rate used for sending the transmission request for the last time, where the reception failure information is used to indicate that the receiving end has not successfully received the first communication data;
the transmission rate used for transmitting the transmission request each time is smaller than the transmission rate used for transmitting the transmission request last time, and the data transmitted between the transmitting end and the receiving end are transmitted in multiple batches;
the first communication data comprises a plurality of data packets, the receiving failure information comprises data packet indication information, the data packet indication information is used for indicating the data packets which are not successfully received by the receiving end in the first communication data, and the fourth sending module is specifically used for;
Detecting the retransmission times of the data packet which is not successfully received by the receiving end in the first communication data according to the data packet indication information;
and if the retransmission times are smaller than a preset times threshold, retransmitting the data packet which is not successfully received by the receiving end in the first communication data to the receiving end according to the transmission rate used for transmitting the transmission request for the last time.
8. The apparatus of claim 7, wherein the first transmitting module is specifically configured to:
sending an ith transmission request to the receiving end, wherein i is a positive integer;
if the transmission response which is sent by the receiving end and responds to the ith transmission request is received within the first preset time period, stopping continuing to send the transmission request;
if the transmission response, which is sent by the receiving end and is in response to the ith transmission request, is not received within the first preset duration, the (i+1) th transmission request is continuously sent to the receiving end, wherein the transmission rate used for sending the (i+1) th transmission request is smaller than the transmission rate used for sending the (i) th transmission request.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
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