CN109150935B - File transmission method and device and mobile terminal - Google Patents
File transmission method and device and mobile terminal Download PDFInfo
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- CN109150935B CN109150935B CN201710462005.XA CN201710462005A CN109150935B CN 109150935 B CN109150935 B CN 109150935B CN 201710462005 A CN201710462005 A CN 201710462005A CN 109150935 B CN109150935 B CN 109150935B
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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Abstract
The invention discloses a file transmission method, a file transmission device and a mobile terminal, wherein the method comprises the following steps: before the file uploading starts, whether the size of the file exceeds the preset size of the file is judged, if yes, the file is dynamically segmented according to the network state and then uploaded in a file block mode, and if not, the file is directly uploaded. According to the invention, whether the block transmission of the file is carried out or not is selected according to the size of the file before the file transmission, and when the block transmission is required, the proper size of the file block is dynamically calculated according to the network state, so that the file transmission can be carried out more efficiently, and the reduction of data retransmission is facilitated when the recovery is carried out; furthermore, when the network is stable, the calculation and adjustment of the file blocks are not needed, and when the network condition fluctuates, the dynamic calculation of the file blocks is carried out again according to the real-time network condition, so that the purposes of dynamically calculating and adjusting the sizes of the file blocks to adapt to the network condition, achieving high-efficiency network transmission and reducing the data volume during the interruption of retransmission are achieved.
Description
Technical Field
The present invention relates to the field of file transmission, and in particular, to a file transmission method and apparatus, and a mobile terminal.
Background
With the rapid development of the internet and the comprehensive popularization of the mobile terminal, more and more people use the mobile device to carry out daily work and communication anytime and anywhere. How to perform efficient, stable and recoverable data transmission at the mobile terminal becomes the key research point of the data transmission solution of the mobile terminal.
Generally, the existing file uploading solution is to directly upload the whole file without blocking the file. According to the scheme, after transmission is interrupted due to a network or other reasons, the whole file needs to be uploaded again, network flow and transmission time are wasted, and user experience is not good.
A further solution is to divide the entire file into blocks of a fixed size before uploading the file, for example, a size of 64KB is designated as a file block, divide the file, upload the divided file blocks until all the file blocks are uploaded, and then splice the file blocks by the server, thereby synthesizing the entire file. But the file size is not considered when the block is divided during uploading, and the block size is fixed for uploading. The existing main disadvantage of this scheme is that the block size cannot be determined according to specific file size and network conditions. For example, chunking is generally not required when the file is small, or the number of chunks may be reduced. If the network condition is good and the file blocks are small, more time is consumed on continuously and circularly dividing the small data file blocks one by one; if the network condition is not good and the file blocks are large, the current blocks which fail to be uploaded need to be repeatedly uploaded when the retransmission is interrupted, and the advantage of file block transmission is greatly reduced or even lost.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a file transmission method, device and mobile terminal for overcoming the above-mentioned drawbacks of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a file transmission method is constructed, and comprises the following steps:
before the file uploading starts, judging whether the size of the file exceeds the preset size of the file or not;
if the size of the file does not exceed the preset size of the file, the file is directly uploaded;
and if the size of the file exceeds the preset size of the file, dynamically segmenting the file according to the network state and uploading the file in the form of file blocks.
Preferably, the uploading the file after dynamically partitioning according to the network state includes:
when the transmission of each file block is finished, calculating the size of the next file block according to the size of the previous file block and the transmission time, and segmenting the next file block from the rest files according to the calculation result for transmission; wherein the size of the next file block is positively correlated with the size of the previous file block and negatively correlated with the transmission time of the previous file.
Preferably, the uploading the file after dynamically partitioning according to the network state further includes:
when the transmission of a certain file block is finished, if the variation amplitude of the size of the previously sent preset file block is within the first preset range, the size of the next file block does not need to be calculated, the next file block is obtained by dividing according to the size of the certain file block, and when the variation amplitude of the transmission time of the single file block compared with the transmission time of the corresponding previous file block exceeds the second fluctuation range, the size of the next file block is recalculated.
Preferably, the uploading the file after dynamically partitioning according to the network state further includes:
and if the change amplitude of the transmission time of a certain file block compared with the transmission time of the corresponding previous file block exceeds a third fluctuation range, dividing the next file block from the rest files for transmission according to the relation which is in a preset proportion with the size of the certain file block.
Preferably, the calculating the size of the next file block according to the size of the previous file block and the transmission time is calculated based on the following formula:
size＝2power
where s1 represents the size of the last file block, t1 represents the transfer time of the last file block, and size represents the size of the next file block.
The present invention also claims a file transfer apparatus, characterized by comprising:
the first judging module is used for judging whether the size of the file exceeds the preset file size before the file uploading starts, starting the first executing module when the size of the file exceeds the preset file size, and starting the second executing module when the size of the file does not exceed the preset file size;
the first execution module is used for dynamically segmenting the file according to the network state and uploading the file in the form of file blocks;
and the second execution module is used for directly uploading the file.
Preferably, the first executing module includes:
and the first calculating unit is used for calculating the size of the next file block according to the size of the previous file block and the transmission time when the transmission of each file block is finished, and segmenting the next file block from the rest files according to the calculation result for transmission.
Preferably, the first execution module further includes:
and the stable transmission control unit is used for dividing the subsequent file blocks according to the size of a certain file block when the transmission of the certain file block is finished and the change amplitude of the size of the previously sent preset file block is within a first preset range, and restarting the first calculation unit to calculate the size of the next file block until the change amplitude of the transmission time of the single file block compared with the transmission time of the corresponding previous file block exceeds a second fluctuation range.
Preferably, the first execution module further includes:
and the second calculating unit is used for dividing the next file block from the rest files for transmission according to the relationship which is in a preset proportion with the size of the certain file block when the change amplitude of the transmission time of the certain file block compared with the transmission time of the corresponding previous file block exceeds a third fluctuation range.
The invention also claims a mobile terminal, comprising a processor and a storage device, wherein the storage device can store a plurality of instructions, and the instructions can be loaded and executed by the processor: before the file uploading starts, whether the size of the file exceeds the preset size of the file or not is judged, if the size of the file does not exceed the preset size of the file, the file is directly uploaded, and if the size of the file exceeds the preset size of the file, the file is dynamically segmented according to a network state and then uploaded in a file block mode.
The file transmission method, the file transmission device and the mobile terminal have the following beneficial effects that: according to the invention, whether the block transmission of the file is carried out or not is selected according to the size of the file before the file transmission, and when the block transmission is required, the proper size of the file block is dynamically calculated according to the network state, so that the file transmission can be carried out more efficiently, and the reduction of data retransmission is facilitated when the recovery is carried out; furthermore, the invention can also compare and judge according to the results of the previous times of file block transmission, optimize the calculation process of the subsequent file block, reduce the calculation time, when the network is stable, the calculation and adjustment of the subsequent file block are not needed, when the network condition fluctuates, the dynamic calculation of the file block can be carried out again according to the real-time network condition, thereby achieving the purposes of dynamically calculating and adjusting the size of the file block to adapt to the network condition, effectively carrying out the network transmission and reducing the data volume when the retransmission is interrupted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
FIG. 1 is a flowchart illustrating a file transfer method according to a preferred embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is noted that the terms "equal," "same," "simultaneously," or other similar terms are not limited to the absolute equality or equality in mathematical terms, but may be similar in engineering sense or within an acceptable error range when practicing the claims of this patent.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The terms including ordinal numbers such as "first", "second", and the like used in the present specification may be used to describe various components, but the components are not limited by the terms. These terms are used only for the purpose of distinguishing one constituent element from other constituent elements. For example, a first component may be named a second component, and similarly, a second component may also be named a first component, without departing from the scope of the present invention. The term "and/or" includes a combination of a plurality of related items and one of the plurality of related items.
The general idea of the invention is as follows: dynamically segmenting the file according to the network state and uploading the file in a file block form, wherein the network state can be reacted through the transmission of the previous file block, the size of the next file block is positively correlated with the size of the previous file block and negatively correlated with the transmission time of the previous file, for example, the larger the previous file block is, the shorter the transmission time is, the larger the next file block is; the smaller the previous file block, the longer the transfer time, and the smaller the next file block.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features of the embodiments and examples of the present invention may be combined with each other without conflict.
The file transmission method comprises the following steps:
s100, before the file uploading starts, judging whether the size of the file exceeds the preset size of the file or not;
the preset file size may be set empirically, and is not limited thereto. For example, it may be 1M.
S200, if the size of the file does not exceed the preset size of the file, directly uploading the file;
and S300, if the size of the file exceeds the preset size of the file, dynamically segmenting the file according to the network state and uploading the file in a file block form.
Referring to fig. 1, specifically, the uploading after dynamically segmenting the file according to the network state includes: acquiring file block uploading starting time t10 when the transmission of each file block is started, acquiring file block uploading ending time t20 when the transmission of each file block is finished, calculating the size of the next file block according to the size of the previous file block and the transmission time t20-t10, and segmenting the next file block from the rest files according to the calculation result for transmission.
It will be appreciated that a default file chunk size, such as 256KB, may be specified for the first file chunk.
The size of the next file block obtained by calculation is positively correlated with the size of the previous file block and negatively correlated with the transmission time of the previous file, so that the less data which needs to be repeatedly uploaded is ensured when transmission interruption occurs due to network and other reasons, the transmission time can be saved to the greatest extent, the flow consumption is reduced, and the purpose of efficient file transmission is achieved.
It should be noted that, the specific calculation method is not limited, and in the preferred embodiment, the calculation is based on the following formula:
size＝2power
where s1 represents the size of the last file block; t1 represents the transfer time of the last file block, which is equal to t20-t 10; size represents the size of the next file block.
Preferably, if the network condition is stable in a certain period of time, several consecutive file blocks may be substantially consistent, and then calculation is not needed, and the size obtained by the previous calculation is directly used as the block size, so that the number of complex calculation times can be reduced, and certainly, if the transmission time change of the file block with the same size is detected to be large subsequently, calculation can be performed again to ensure that the size of the subsequent file block is dynamically adjusted along with the change of the external environment, so the invention can further comprise: when the transmission of a certain file block is finished, if the variation amplitude of the size of the previously sent preset file block is within the first preset range, the size of the next file block does not need to be calculated, the next file block is obtained by dividing according to the size of the certain file block, and when the variation amplitude of the transmission time of the single file block compared with the transmission time of the corresponding previous file block exceeds the second fluctuation range, the size of the next file block is recalculated.
It is understood that the first pre-movement range and the second movement range may be specific preset value ranges (for example, the first pre-movement range is less than 256KB, and the second movement range is less than 500ms), and may also be the size of the referenced file block and the percentage of the transmission time, for example, if the size of the file block during stable transmission is 1M, the first pre-movement range may be less than 1M × 5%, and for example, if the transmission time of the previous file block is 10ms, the second movement range may be 10ms × 150%, and the specific percentage may be set empirically.
Further preferably, if the network condition is very unstable, the next file block may be directly partitioned according to the previous file block size, so as to reduce the number of complex calculations. Therefore, the present invention also includes: and if the change amplitude of the transmission time of a certain file block compared with the transmission time of the corresponding previous file block exceeds a third fluctuation range, dividing the next file block from the rest files for transmission according to the relation which is in a preset proportion with the size of the certain file block. Obviously, if the variation is a decrease in the transmission time, the preset ratio is a value greater than 1, for example, 2 times; if the change is an increase in transit time, the preset ratio is a value less than 1, say 1/2.
Obviously, the third fluctuation range is larger than the second fluctuation range. Similarly, the third pre-action range may be a specific preset value range, or may be a percentage of the transmission time of the last file block referred to.
It will be appreciated that the two preferred embodiments mentioned above may be combined in the same embodiment, or any one of them may be selected.
Based on the same inventive concept, the invention also discloses a file transmission device, which comprises:
the first judging module is used for judging whether the size of the file exceeds the preset file size before the file uploading starts, starting the first executing module when the size of the file exceeds the preset file size, and starting the second executing module when the size of the file does not exceed the preset file size;
the first execution module is used for dynamically segmenting the file according to the network state and uploading the file in the form of file blocks;
and the second execution module is used for directly uploading the file.
In a preferred embodiment, the first execution module includes: a first calculating unit and a second calculating unit and/or a stable transmission control unit.
And the first calculating unit is used for calculating the size of the next file block according to the size of the previous file block and the transmission time when the transmission of each file block is finished, and segmenting the next file block from the rest files according to the calculation result for transmission.
It should be noted that a default file block size, such as 256KB, may be specified for the first file block. In addition, the specific calculation method of the first calculation unit is not limited, and in a preferred embodiment, the calculation is based on the following formula:
size＝2power
where s1 represents the size of the last file block, t1 represents the transfer time of the last file block, and size represents the size of the next file block.
The stable transmission control unit is used for dividing a subsequent file block according to the size of a certain file block when the transmission of the certain file block is finished and the variation amplitude of the size of a preset file block sent before is in a first preset range, and restarting the first calculation unit to calculate the size of the next file block until the variation amplitude of the transmission time of the single file block compared with the transmission time of the previous file block corresponding to the single file block exceeds a second fluctuation range.
It is understood that the first pre-movement range and the second movement range may be specific preset value ranges (for example, the first pre-movement range is less than 256KB, and the second movement range is less than 500ms), and may also be the size of the referenced file block and the percentage of the transmission time, for example, if the size of the file block during stable transmission is 1M, the first pre-movement range may be less than 1M × 5%, and for example, if the transmission time of the previous file block is 10ms, the second movement range may be 10ms × 150%, and the specific percentage may be set empirically.
And the second calculating unit is used for dividing the next file block from the rest files for transmission according to a preset proportional relation with the size of the certain file block when the change amplitude of the transmission time of the certain file block compared with the transmission time of the corresponding previous file block exceeds a third fluctuation range.
Obviously, the third fluctuation range is larger than the second fluctuation range. Similarly, the third pre-action range may be a specific preset value range, or may be a percentage of the transmission time of the last file block referred to.
It can be understood that both the second calculating unit and the stable transmission control unit are preferable, and may be provided at the same time, or any one of them may be selected.
Based on the same inventive concept, the invention discloses a mobile terminal, which comprises a processor and a storage device, wherein the storage device can store a plurality of instructions, and the instructions can be loaded and executed by the processor: before the file uploading starts, whether the size of the file exceeds the preset size of the file or not is judged, if the size of the file does not exceed the preset size of the file, the file is directly uploaded, and if the size of the file exceeds the preset size of the file, the file is dynamically segmented according to a network state and then uploaded in a file block mode.
Because the inventive concepts are completely the same, the detailed implementation of the mobile terminal is described with reference to the description of the file transmission method, and will not be described herein again.
In summary, the file transmission method, the file transmission device and the mobile terminal of the present invention have the following advantages: according to the invention, whether the block transmission of the file is carried out or not is selected according to the size of the file before the file transmission, and when the block transmission is required, the proper size of the file block is dynamically calculated according to the network state, so that the file transmission can be carried out more efficiently, and the reduction of data retransmission is facilitated when the recovery is carried out; furthermore, the invention can also compare and judge according to the results of the previous times of file block transmission, optimize the calculation process of the subsequent file block, reduce the calculation time, when the network is stable, the calculation and adjustment of the subsequent file block are not needed, when the network condition fluctuates, the dynamic calculation of the file block can be carried out again according to the real-time network condition, thereby achieving the purposes of dynamically calculating and adjusting the size of the file block to adapt to the network condition, effectively carrying out the network transmission and reducing the data volume when the retransmission is interrupted.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A method for file transfer, comprising:
before the file uploading starts, judging whether the size of the file exceeds the preset size of the file or not;
if the size of the file does not exceed the preset size of the file, the file is directly uploaded;
if the size of the file exceeds the preset size of the file, the file is dynamically segmented according to the network state and then uploaded in the form of file blocks,
the method for uploading files in a file block form after dynamically segmenting the files according to the network state comprises the following steps:
when the transmission of each file block is finished, calculating the size of the next file block according to the size of the previous file block and the transmission time, and segmenting the next file block from the rest files according to the calculation result for transmission; wherein the size of the next file block is positively correlated with the size of the previous file block and negatively correlated with the transmission time of the previous file; and if the change amplitude of the transmission time of a certain file block compared with the transmission time of the corresponding previous file block exceeds a third fluctuation range, dividing the next file block from the rest files for transmission according to the relation which is in a preset proportion with the size of the certain file block.
2. The file transmission method according to claim 1, wherein the uploading after dynamically partitioning the file according to the network status further comprises:
when the transmission of a certain file block is finished, if the variation amplitude of the size of the previously sent preset file block is within the first preset range, the size of the next file block does not need to be calculated, the next file block is obtained by dividing according to the size of the certain file block, and when the variation amplitude of the transmission time of the single file block compared with the transmission time of the corresponding previous file block exceeds the second fluctuation range, the size of the next file block is recalculated.
3. The method according to claim 1, wherein the calculating of the size of the next file block based on the size of the previous file block and the transmission time is based on the following formula:
power=log2(s1/t1)
size=2power
where s1 represents the size of the last file block, t1 represents the transfer time of the last file block, and size represents the size of the next file block.
4. A file transfer apparatus, comprising:
the first judging module is used for judging whether the size of the file exceeds the preset file size before the file uploading starts, starting the first executing module when the size of the file exceeds the preset file size, and starting the second executing module when the size of the file does not exceed the preset file size;
the first execution module is used for dynamically segmenting the file according to the network state and uploading the file in the form of file blocks;
the second execution module is used for directly uploading the file;
wherein the first execution module comprises:
the first calculation unit is used for calculating the size of the next file block according to the size of the previous file block and the transmission time when the transmission of each file block is finished, and segmenting the next file block from the rest files according to the calculation result for transmission;
and the second calculating unit is used for dividing the next file block from the rest files for transmission according to the relationship of a preset proportion to the size of the certain file block when the change amplitude of the transmission time of the certain file block compared with the transmission time of the corresponding previous file block exceeds a third fluctuation range, wherein if the transmission time is reduced, the preset proportion is a numerical value larger than 1, and if the transmission time is increased, the preset proportion is a numerical value smaller than 1.
5. The file transfer device according to claim 4, wherein the first execution module further comprises:
and the stable transmission control unit is used for dividing the subsequent file blocks according to the size of a certain file block when the transmission of the certain file block is finished and the change amplitude of the size of the previously sent preset file block is within a first preset range, and restarting the first calculation unit to calculate the size of the next file block until the change amplitude of the transmission time of the single file block compared with the transmission time of the corresponding previous file block exceeds a second fluctuation range.
6. A mobile terminal comprising a processor and a storage device, the storage device storing a plurality of instructions, the instructions being loadable by the processor and executable to:
before the file uploading starts, judging whether the size of the file exceeds the preset size of the file or not, if the size of the file does not exceed the preset size of the file, directly uploading the file, and if the size of the file exceeds the preset size of the file, dynamically segmenting the file according to a network state and uploading the file in the form of file blocks;
the method for uploading the file in the form of file blocks after dynamically segmenting the file according to the network state comprises the following steps: when the transmission of each file block is finished, calculating the size of the next file block according to the size of the previous file block and the transmission time, and segmenting the next file block from the rest files according to the calculation result for transmission; wherein the size of the next file block is positively correlated with the size of the previous file block and negatively correlated with the transmission time of the previous file; and if the change amplitude of the transmission time of a certain file block compared with the transmission time of the corresponding previous file block exceeds a third fluctuation range, dividing the next file block from the rest files for transmission according to the relation which is in a preset proportion with the size of the certain file block.
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| CN111245748A (en) * | 2020-01-03 | 2020-06-05 | 北京明略软件系统有限公司 | File transmission method, device, system, electronic equipment and storage medium |
| CN111314439A (en) * | 2020-01-20 | 2020-06-19 | 北京无限光场科技有限公司 | Data sending method and device and electronic equipment |
| CN111586158B (en) * | 2020-05-06 | 2023-04-14 | 山东汇贸电子口岸有限公司 | Audio and video fragment uploading and retransmitting method |
| CN111917867A (en) * | 2020-07-29 | 2020-11-10 | 星辰天合（北京）数据科技有限公司 | Method and device for uploading Web file |
| CN112423297A (en) * | 2020-11-16 | 2021-02-26 | 重庆满集网络科技有限公司 | Cross-border e-commerce and mobile terminal interaction method, system and storage medium |
| CN113595685A (en) * | 2021-07-15 | 2021-11-02 | 上海晶赞融宣科技有限公司 | Data transmission method and device, storage medium and terminal |
| CN113852563B (en) * | 2021-09-22 | 2023-10-31 | 深圳市元征科技股份有限公司 | Message data transmission method and device, terminal equipment and readable storage medium |
| CN114285838A (en) * | 2021-12-22 | 2022-04-05 | 中国农业银行股份有限公司 | File uploading method, device, system, storage medium and electronic equipment |
| CN115378933A (en) * | 2022-10-25 | 2022-11-22 | 四川蜀天信息技术有限公司 | Breakpoint resume method and device for file transmission |
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| CN104168093A (en) * | 2013-05-20 | 2014-11-26 | 腾讯科技（深圳）有限公司 | File transmission method and device |
| CN104780092A (en) * | 2014-01-13 | 2015-07-15 | 阿里巴巴集团控股有限公司 | File transmission method and device as well as server system |
| CN104378422A (en) * | 2014-11-13 | 2015-02-25 | 中国联合网络通信有限公司保定市分公司 | Mobile terminal and file transmission method and system thereof |
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