CN103312719B - Rate adaptation transmission method based on UDP under network environment - Google Patents
Rate adaptation transmission method based on UDP under network environment Download PDFInfo
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- CN103312719B CN103312719B CN201310263674.6A CN201310263674A CN103312719B CN 103312719 B CN103312719 B CN 103312719B CN 201310263674 A CN201310263674 A CN 201310263674A CN 103312719 B CN103312719 B CN 103312719B
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Abstract
The present invention provides rate adaptation transmission method based on UDP under a kind of network environment, including: transmitting terminal, data to be transmitted is split as N number of data block；Transmitting terminal carries the transmission message of data block i based on udp protocol with the i-th transmission rate to receiving terminal transmission；Transmitting terminal judges whether to receive the response message that data block i of receiving terminal return is properly received within a preset time interval；If received, transmitting terminal, according to the response message received, calculates the current receiving velocity of described receiving terminal；Transmitting terminal, according to the current receiving velocity of described receiving terminal, dynamically adjusts described i-th transmission rate of described transmitting terminal, the i-th transmission rate is adjusted to i+1 transmission rate；I=i+1, circulation is made to perform above-mentioned steps, until terminating during i ＞ N.The speed of transmission is constantly adjusted according to real-time network condition, in the case of network is highly unstable, or, when Multi-task Concurrency, it is possible to ensure data transmission credibility and high efficiency.
Description
Technical field
The invention belongs to technical field of data transmission, be specifically related to speed based on UDP under a kind of network environment
Adaptive transmission method.
Background technology
In recent years, along with developing rapidly of communication network, by the demand of communication network transmission Various types of data also
Increasing.The advantage that udp protocol is high owing to having data transmission real-time, and gradually by the green grass or young crops of user
Look at.But, different from TCP transmission agreement, UDP host-host protocol is insecure host-host protocol, generally uses
Fixed-rate transmission data, therefore, it is primarily adapted for use in bandwidth abundance and the network of good stability.Work as network
When fluctuating bigger, during by UDP host-host protocol transmission data, asking of data packetloss and data transmission delay
Topic is serious, thus limits the application of UDP host-host protocol.
Summary of the invention
The defect existed for prior art, the present invention provide under a kind of network environment speed based on UDP from
Adapt to transmission method, even if in the case of network is highly unstable, or, when Multi-task Concurrency, also
Can ensure that reliability and high efficiency that data transmit.
The technical solution used in the present invention is as follows:
The present invention provides rate adaptation transmission method based on UDP under a kind of network environment, including following step
Rapid:
S1, data to be transmitted is split as N number of data block by transmitting terminal, obtain data block set data block 1,
Data block 2... data block N}；Wherein, N is more than or equal to 2；Make i=1；
S2, described transmitting terminal carries data block i with the i-th transmission rate to receiving terminal transmission based on udp protocol
Transmission message；
S3, described transmitting terminal judges whether to receive the data that described receiving terminal returns within a preset time interval
The response message that block i is properly received；Without receiving, then perform S4；If received, then perform
S5；
S4, described transmitting terminal repeats to send data block i to described receiving terminal with described i-th transmission rate, until
Receive the response message that data block i of described receiving terminal return is properly received；Then S5 is performed；
S5, described transmitting terminal, according to the described response message received, calculates currently connecing of described receiving terminal
Receive speed；
S6, described transmitting terminal, according to the current receiving velocity of described receiving terminal, dynamically adjusts described transmitting terminal
Described i-th transmission rate, is adjusted to i+1 transmission rate by described i-th transmission rate；
S7, makes i=i+1, circulation perform S2-S6, until terminating during i ＞ N.
Preferably, after S2, also include:
When described receiving terminal receives data block i from described transmitting terminal, described receiving terminal preserves described number
According to block i, then return, to described transmitting terminal, the response message that described data block i is properly received.
Preferably, number is carried with the 1st transmission rate to receiving terminal transmission based on udp protocol when described transmitting terminal
During according to the transmission message of block 1, this transmission message carries the information that data block total number amount is N, and,
Also carry check value；Each data block quantity received is calculated, when detecting by described receiving terminal
When receiving N number of data block, described receiving terminal judges that check value is the most correct, if correctly, then to described
The notification message that transmitting terminal feedback data is transmitted；If it is incorrect, then to described transmitting terminal feedback data
The notification message of reception failure, makes described transmitting terminal resend described data to be transmitted, until data are correct
Till being transmitted.
Preferably, described receiving terminal is after the notification message that described transmitting terminal feedback data is transmitted, also
Including:
Described receiving terminal assembles the N number of data block received, and reduction obtains described data to be transmitted.
Beneficial effects of the present invention is as follows:
Rate adaptation transmission method based on UDP under the network environment that the present invention provides, according to real-time net
Network situation constantly adjusts the speed of transmission, thus farthest utilizes bandwidth, improves the efficiency of data transmission.
And, even if in the case of network is highly unstable, or, when Multi-task Concurrency, it is also ensured that
The reliability of data transmission and high efficiency.
Accompanying drawing explanation
Under the network environment that Fig. 1 provides for the present invention, the flow process of rate adaptation transmission method based on UDP is shown
It is intended to.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
As it is shown in figure 1, the present invention provides rate adaptation transmission method based on UDP under a kind of network environment,
Comprise the following steps:
S1, data to be transmitted is split as N number of data block by transmitting terminal, obtain data block set data block 1,
Data block 2... data block N}；Wherein, N is more than or equal to 2；Make i=1；
S2, described transmitting terminal carries data block i with the i-th transmission rate to receiving terminal transmission based on udp protocol
Transmission message；When described receiving terminal receives data block i from described transmitting terminal, described receiving terminal is protected
Deposit described data block i, then return, to described transmitting terminal, the response message that described data block i is properly received.
In this step, when transmitting terminal sends data block 1, initial transmission rate be based on data block quantity and
Current network conditions determines.
S3, described transmitting terminal judges whether to receive the data that described receiving terminal returns within a preset time interval
The response message that block i is properly received；Without receiving, then perform S4；If received, then perform
S5；
S4, described transmitting terminal repeats to send data block i to described receiving terminal with described i-th transmission rate, until
Receive the response message that data block i of described receiving terminal return is properly received；Then S5 is performed；
S5, described transmitting terminal, according to the described response message received, calculates currently connecing of described receiving terminal
Receive speed；
S6, described transmitting terminal, according to the current receiving velocity of described receiving terminal, dynamically adjusts described transmitting terminal
Described i-th transmission rate, is adjusted to i+1 transmission rate by described i-th transmission rate；Wherein, adjustment is sent out
Transmission rate particularly as follows: be adjusted to receiving velocity and increase or reduce certain percentage ratio by transmission rate.
S7, makes i=i+1, circulation perform S2-S6, until terminating during i ＞ N.
It addition, when described transmitting terminal carries data with the 1st transmission rate to receiving terminal transmission based on udp protocol
During the transmission message of block 1, this transmission message carries the information that data block total number amount is N, and, also
Carry check value；Each data block quantity received is calculated by described receiving terminal, connects when detecting
When receiving N number of data block, described receiving terminal judges that check value is the most correct, if correctly, then to described
The notification message that sending end feedback data is transmitted, then receiving terminal assembles the N number of data block received, also
Former obtain described data to be transmitted；If incorrect, then would leading to described transmitting terminal feedback data reception failure
Know message, make described transmitting terminal resend described data to be transmitted, until data are correctly transmitted.
It should be noted that receiving terminal judges test value, main purpose for inspection data block, in transmitting procedure, is
No generation mess code situation, thus ensure that data block is by the most complete reception.
Rate adaptation transmission method based on UDP under the network environment that the present invention provides, according to real-time net
Network situation constantly adjusts the speed of transmission, thus farthest utilizes bandwidth, improves the efficiency of data transmission.
And, even if in the case of network is highly unstable, or, when Multi-task Concurrency, it is also ensured that
The reliability of data transmission and high efficiency.
The above is only the preferred embodiment of the present invention, it is noted that common for the art
For technical staff, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications,
These improvements and modifications also should regard protection scope of the present invention.
Claims (1)
1. rate adaptation transmission method based on UDP under a network environment, it is characterised in that include with
Lower step:
S1, data to be transmitted is split as N number of data block by transmitting terminal, obtain data block set data block 1,
Data block 2 ... data block N}；Wherein, N is more than or equal to 2；Make i=1；
S2, described transmitting terminal carries data block i with the i-th transmission rate to receiving terminal transmission based on udp protocol
Transmission message；Wherein, when transmitting terminal sends data block 1, initial transmission rate is based on data block quantity
And current network conditions determines；
S3, described transmitting terminal judges whether to receive the data that described receiving terminal returns within a preset time interval
The response message that block i is properly received；Without receiving, then perform S4；If received, then perform
S5；
S4, described transmitting terminal repeats to send data block i to described receiving terminal with described i-th transmission rate, until
Receive the response message that data block i of described receiving terminal return is properly received；Then S5 is performed；
S5, described transmitting terminal, according to the described response message received, calculates currently connecing of described receiving terminal
Receive speed；
S6, described transmitting terminal, according to the current receiving velocity of described receiving terminal, dynamically adjusts described transmitting terminal
Described i-th transmission rate, is adjusted to i+1 transmission rate by described i-th transmission rate；
S7, makes i=i+1, circulation perform S2-S6, until terminating during i > N；
Wherein, after S2, also include:
When described receiving terminal receives data block i from described transmitting terminal, described receiving terminal preserves described number
According to block i, then return, to described transmitting terminal, the response message that described data block i is properly received；
Wherein, data are carried with the 1st transmission rate to receiving terminal transmission based on udp protocol when described transmitting terminal
During the transmission message of block 1, this transmission message carries the information that data block total number amount is N, and, also
Carry check value；Each data block quantity received is calculated by described receiving terminal, connects when detecting
When receiving N number of data block, described receiving terminal judges that check value is the most correct, if correctly, then to described
The notification message that sending end feedback data is transmitted；If incorrect, then connect to described transmitting terminal feedback data
Receive failed notification message, make described transmitting terminal resend described data to be transmitted, until data correctly pass
Till being totally lost into；
Wherein, described receiving terminal, after the notification message that described transmitting terminal feedback data is transmitted, also wraps
Include:
Described receiving terminal assembles the N number of data block received, and reduction obtains described data to be transmitted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310263674.6A CN103312719B (en) | 2013-06-27 | 2013-06-27 | Rate adaptation transmission method based on UDP under network environment |
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| CN201310263674.6A CN103312719B (en) | 2013-06-27 | 2013-06-27 | Rate adaptation transmission method based on UDP under network environment |
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| CN103312719A CN103312719A (en) | 2013-09-18 |
| CN103312719B true CN103312719B (en) | 2016-12-28 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763374A (en) * | 2014-01-23 | 2014-04-30 | 深圳联友科技有限公司 | Method and device for data transmission based on UDT |
| CN105515733B (en) | 2014-09-24 | 2019-03-12 | 中兴通讯股份有限公司 | A kind of feedback method and device |
| CN106911432A (en) * | 2017-03-29 | 2017-06-30 | 武汉米风通信技术有限公司 | Broadcasting and TV frequency spectrum ultra-narrow band Internet of Things communication channel rate adaptive approach and device |
| CN108769450B (en) * | 2018-06-21 | 2021-01-05 | 深圳市道通智能航空技术有限公司 | Data transmission control method, information sending end, receiving end and aircraft graph transmission system |
| CN109451541A (en) * | 2018-12-21 | 2019-03-08 | 中国电子科技集团公司第三十研究所 | Message transmission rate adaptive approach based on UDP under a kind of wireless network environment |
| CN110198203A (en) * | 2019-06-14 | 2019-09-03 | 中国人民解放军陆军工程大学 | Method for controlling data transmission rate |
| CN116073957B (en) * | 2023-03-14 | 2023-06-06 | 南京鼎岩信创科技有限公司 | Reliable one-to-many data transmission method based on UDP |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534573A (en) * | 2008-11-20 | 2009-09-16 | 上海交通大学 | Method for achieving transmission layer confirmation by link layer in wireless self-organization network |
| CN101557273A (en) * | 2008-04-11 | 2009-10-14 | 傅承鹏 | Method simultaneously suitable for wired network real-time streaming media transport protocol and wireless network real-time streaming media transport protocol |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557273A (en) * | 2008-04-11 | 2009-10-14 | 傅承鹏 | Method simultaneously suitable for wired network real-time streaming media transport protocol and wireless network real-time streaming media transport protocol |
| CN101534573A (en) * | 2008-11-20 | 2009-09-16 | 上海交通大学 | Method for achieving transmission layer confirmation by link layer in wireless self-organization network |
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