CN102821043A - Control method and device - Google Patents
Control method and device Download PDFInfo
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- CN102821043A CN102821043A CN2012102644235A CN201210264423A CN102821043A CN 102821043 A CN102821043 A CN 102821043A CN 2012102644235 A CN2012102644235 A CN 2012102644235A CN 201210264423 A CN201210264423 A CN 201210264423A CN 102821043 A CN102821043 A CN 102821043A
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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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Abstract
The invention discloses a control method and device. The method comprises the stepsthat: a link layer returns an NACK (negative acknowledgement) message to a sending end when receiving an error message in a receiving direction and initiates a retransmission order, and an intermediate layer triggers a retransmission counter to add an value by 1; when the retransmission times of the same message are less than or equal to the preset retransmission times, the retransmission counter is triggered for reset; and when the retransmission times of the same message are greater than the preset retransmission times, a bottom physical layer is triggered for reset. With the adoption of the technical scheme, the data transmission stability and reliability can be effectively ensured, system resources can be reliably and effectively used, and the control method and device have a very high application value in a high-end server system.
Description
Technical field
Data transmission control technology of the present invention is specifically related to a kind of control method and device.
Background technology
The develop rapidly of Along with computer technology and integrated circuit technique, huge data computation and data analysis, message areas such as complicated graphs analysis and science budget require high to the Performance And Reliability of server system.In order to satisfy the needs of the highly reliable server system development of high-performance, the transfer of data of high bandwidth requires and highly reliable data transmission capabilities requirement is the essential characteristic of server system.
In the correlation technique; The transmission of data message is as shown in Figure 1; Can know by Fig. 1; Still not to the controlling mechanism of data message transmissions, and the control of data message transmission can greatly improve the reliability of system, therefore provide a kind of can be very important to the mechanism that the transmission of data message is controlled.
Summary of the invention
The technical problem that the present invention will solve provides a kind of control method and device, to improve reliability of data transmission.
In order to address the above problem, the embodiment of the invention provides a kind of control method, comprises, when link layer is received error message at receive direction, transmitting terminal is returned the NACK message, and concurrent re-transmission is characterized in that:
The value that retransmission counter is triggered in the intermediate layer adds 1; When same message number of retransmissions during, trigger said retransmission counter and reset smaller or equal to preset number of retransmissions value; When the number of retransmissions of same message during greater than preset said number of retransmissions value, the physical layer that triggers bottom resets.
Alternatively, this control method also comprises:
The said physical layer of said link layer triggers resets once, and it adds 1 from reset counter the control of said physical layer, when the runback precedence number of said physical layer greater than preset runback precedence numerical value also during the message transmission success, the triggering system integral reset; When the said runback precedence number of said physical layer is the message transmission success smaller or equal to preset said runback precedence numerical value, triggers and saidly reset from reset counter.
Alternatively, this control method also comprises:
When the number of retransmissions of same message during greater than preset said number of retransmissions value, the current data transmitting scene is preserved in the control of trigger link transmitting scene; The control of the said link transmission scene of said link layer triggers once, said its external reset counter of physical layer control adds 1, when the value of said external counter during greater than preset count value, the triggering system integral reset.
Alternatively, the control of said link layer triggers link transmission scene once, said its external reset counter of physical layer control adds 1 step and comprises:
When the said physical layer of the same message generation of system transmissions re-transmission triggering resets; The said external reset counter of said physical layer adds 1; When the transmission once more of this message still made a mistake and triggers said physical layer once more and reset after said physical layer resets success, the said external reset counter of said physical layer added 1 once more.
Alternatively, this control method also comprises:
In the time of the triggering system integral reset, take system's available resources degradation and/or link degraded operation.
The embodiment of the invention also provides a kind of control device, it is characterized in that, this control device comprises judge module and trigger module, wherein:
Said judge module is arranged to: judge whether link layer initiates to retransmit; Judge that also whether same message number of retransmissions is smaller or equal to preset number of retransmissions value;
Said trigger module is arranged to: when said judge module judged that said link layer initiates to retransmit, the value that triggers the retransmission counter in intermediate layer added 1; When said judge module is judged same message number of retransmissions smaller or equal to preset number of retransmissions value, trigger said retransmission counter and reset; The number of retransmissions of judging same message when said judge module is during greater than preset said number of retransmissions value, and the physical layer that triggers bottom resets.
Alternatively, this control device also comprises control module, wherein:
Said control module is arranged to: the said physical layer of said link layer triggers resets once, and that controls said physical layer adds 1 from reset counter;
Said judge module also is arranged to: whether message transmission is successful in preset runback precedence numerical value for said physical layer;
Said trigger module also is arranged to: the runback precedence number of judging said physical layer when said judge module is greater than preset runback precedence numerical value also during the message transmission success, the triggering system integral reset; When the said runback precedence number of judging said physical layer when said judge module is the message transmission success smaller or equal to preset said runback precedence numerical value, triggers and saidly reset from reset counter.
Alternatively, said trigger module also is arranged to: the number of retransmissions of judging same message when said judge module is during greater than preset said number of retransmissions value, the control of trigger link transmitting scene;
Said control module also is arranged to: the said link transmission scene of said link layer triggers is controlled once, and the external reset counter of controlling said physical layer adds 1;
Said judge module also is arranged to: whether the value of judging said external counter is greater than preset count value;
Said trigger module also is arranged to: the value of judging said external counter when said judge module is during greater than preset count value, the triggering system integral reset.
Alternatively, the said control module external reset counter of also being arranged to control in such a way said physical layer adds 1:
When the said physical layer of the same message generation of system transmissions re-transmission triggering resets; The said external reset counter of controlling said physical layer adds 1; When the transmission once more of this message still made a mistake and triggers said physical layer once more and reset after said physical layer resets success, the said external reset counter of controlling said physical layer added 1 once more.
Alternatively, this device also comprises operational module, wherein:
Said operational module is arranged to: in the time of said trigger module triggering system integral reset, take system's available resources degradation and/or link degraded operation.
The multi-level data transfer control method of the embodiment of the invention has effectively guaranteed stability of data transmission and reliability with device, has also realized that the reliable of system resource effectively utilizes, and has high using value simultaneously in the high-end server system.
Description of drawings
Fig. 1 is the data transmission method in the correlation technique;
The sketch map of Fig. 2 application example of the present invention.
Embodiment
To combine accompanying drawing and embodiment that technical scheme of the present invention is explained in more detail below.
Need to prove that if do not conflict, each characteristic among the embodiment of the invention and the embodiment can mutually combine, all within protection scope of the present invention.In addition, though logical order has been shown, in some cases, can carry out step shown or that describe in flow chart with the order that is different from here.
The embodiment of the invention provides a kind of control method, comprises, when link layer is received error message at receive direction, transmitting terminal is returned the NACK message, and concurrent re-transmission is characterized in that:
The intermediate layer adds 1 via the value of the retransmission counter decision logic triggering retransmission counter of said link layer; When same message number of retransmissions during, trigger said retransmission counter and reset smaller or equal to preset number of retransmissions value; When the number of retransmissions of same message during greater than preset said number of retransmissions value, the physical layer that triggers bottom resets.
When this technological means adopts conventional link layer message transmissions to retransmit controlling mechanism control data message transmissions, realize that decision logic is in order to judge that triggering the fault physical layer resets.
Alternatively, this control method also comprises:
The said retransmission counter decision logic of said link layer triggers said physical layer and resets once; Certainly the decision logic that resets of said physical layer is controlled it and is added 1 from reset counter; When the runback precedence number of said physical layer greater than preset runback precedence numerical value also during the message transmission success, the triggering system integral reset; When the said runback precedence number of said physical layer is the message transmission success smaller or equal to preset said runback precedence numerical value, triggers and saidly reset from reset counter.
This technological means has realized the unsuccessful judgement that resets of physical layer continuous several times, thereby triggering system resets, and the system resource degradation is used, and improves reliability.
Alternatively, this control method also comprises:
When the number of retransmissions of same message during greater than preset said number of retransmissions value, the current data transmitting scene is preserved in the control of trigger link transmitting scene; The retransmission counter decision logic of said link layer triggers said link transmission scene control once; Its external reset counter of external reset decision logic control of said physical layer adds 1; When the value of said external counter during greater than preset count value, the triggering system integral reset.
This technological means has realized because of same message retransmits the wrong judgement that causes bottom physical layer number of resets, thereby triggering system resets, and the system resource degradation is used, and improves reliability.
Alternatively, the retransmission counter decision logic trigger link transmitting scene of said link layer is controlled once, and its external reset counter of the external reset decision logic of said physical layer control adds 1 step and comprises:
When the said physical layer of the same message generation of system transmissions re-transmission triggering resets; The said external reset counter of said physical layer adds 1; When the transmission once more of this message still made a mistake and triggers said physical layer once more and reset after said physical layer resets success, the said external reset counter of said physical layer added 1 once more.
Alternatively, this control method also comprises:
In the time of the triggering system integral reset, take system's available resources degradation and/or link degraded operation.
Above-mentioned retransmission counter decision logic, reset decision logic and external reset decision logic all belongs to prior art certainly, repeats no more at this.
The embodiment of the invention also provides a kind of control device, it is characterized in that, this control device comprises judge module and trigger module, wherein:
Said judge module is arranged to: judge whether link layer initiates to retransmit; Judge that also whether same message number of retransmissions is smaller or equal to preset number of retransmissions value;
Said trigger module is arranged to: when said judge module judged that said link layer initiates to retransmit, the value that triggers the retransmission counter in intermediate layer added 1; When said judge module is judged same message number of retransmissions smaller or equal to preset number of retransmissions value, trigger said retransmission counter and reset; The number of retransmissions of judging same message when said judge module is during greater than preset said number of retransmissions value, and the physical layer that triggers bottom resets.
Alternatively, this control device also comprises control module, wherein:
Said control module is arranged to: the said physical layer of said link layer triggers resets once, and that controls said physical layer adds 1 from reset counter;
Said judge module also is arranged to: whether message transmission is successful in preset runback precedence numerical value for said physical layer;
Said trigger module also is arranged to: the runback precedence number of judging said physical layer when said judge module is greater than preset runback precedence numerical value also during the message transmission success, the triggering system integral reset; When the said runback precedence number of judging said physical layer when said judge module is the message transmission success smaller or equal to preset said runback precedence numerical value, triggers and saidly reset from reset counter.
Alternatively, this control method also comprises:
Said trigger module also is arranged to: the number of retransmissions of judging same message when said judge module is during greater than preset said number of retransmissions value, the control of trigger link transmitting scene;
In this technological means, when the triggering physical layer resetted, the transmitting scene control logic was preserved the scene of message transmissions mistake, retransmitted in order to recover message once more.
Said control module also is arranged to: the said link transmission scene of said link layer triggers is controlled once, and the external reset counter of controlling said physical layer adds 1;
Said judge module also is arranged to: whether the value of judging said external counter is greater than preset count value;
Said trigger module also is arranged to: the value of judging said external counter when said judge module is during greater than preset count value, the triggering system integral reset.
Alternatively, the said control module external reset counter of also being arranged to control in such a way said physical layer adds 1:
When the said physical layer of the same message generation of system transmissions re-transmission triggering resets; The said external reset counter of controlling said physical layer adds 1; When the transmission once more of this message still made a mistake and triggers said physical layer once more and reset after said physical layer resets success, the said external reset counter of controlling said physical layer added 1 once more.
Alternatively, this device also comprises operational module, wherein:
Said operational module is arranged to: in the time of said trigger module triggering system integral reset, take system's available resources degradation and/or link degraded operation.
In a word; A kind of control method and the device of the embodiment of the invention; Consider that mainly the high-end server system is to system data transmission bandwidth and reliability transmission requirement; Adopting conventional data transmission link layer method for designing and message retransmission management mechanism to realize the link data transfer management, design link layer retransmission counter decision logic simultaneously, is that decision condition triggering bottom physical layer logic resets with the message transmissions extent of error.When the error of transmission re-transmission degree of same message reached certain limit, the transmitting scene control logic was started working, and in order to preserve current system link message transmissions scene, triggers the bottom physical layer simultaneously and resets.Limitation because of bottom link design and signal transmission quality; Bottom physical layer reset initialization possibly be able to not once be accomplished; Therefore design physical layer from reset counter and decision logic; When its fault degree that resets reached certain limit, promptly triggering system resetted and adopts the system resource degradation to use.And when the physical layer success that resets; This message still takes place and retransmits unsuccessful in the system link transfer of data when the protection scene restarts; Then triggering the bottom physical layer once more resets; The physical layer external reset counter that makes repeatedly repeatedly adds up, and when its decision logic failure judgement degree reached certain amount, triggering system resetted and adopts the system resource degradation to use.
Further explain with an applying examples of the present invention below.
This application example is as shown in Figure 2; Link layer adopts conventional design method to realize the transmitting-receiving and the retransmission mechanism of data message; Receive correct message when receive direction and then transmitting terminal is returned the ACK message, receive error message when receive direction and then transmitting terminal is returned the NACK message, concurrent re-transmission.
The intermediate layer resets via retransmission counter decision logic triggering retransmission counter or adds " 1 "; When same message number of retransmissions during smaller or equal to preset number of retransmissions value M; Decision logic triggers retransmission counter and resets, when same message number of retransmissions during greater than said M, and decision logic trigger link transmitting scene control logic; Preserve the current data transmitting scene, trigger the bottom physical layer simultaneously and reset.
Physical layer adds " 1 " operation from the decision logic control that resets from reset counter; When link layer retransmission counter decision logic triggering bottom physical layer resets; The number of resets of physical layer is greater than preset runback precedence numerical value R also during success; Be the triggering system integral reset, and take measures such as system's available resources degradation, link degradation; When physical layer number of resets during, then trigger and reset from reset counter smaller or equal to the i.e. success of said R.
Physical layer external reset decision logic control external reset counter adds " 1 " operation; When the same message generation of system transmissions re-transmission triggering physical layer resets; Physical layer external reset counter adds " 1 "; The physical layer transmission once more of this message that resets after the success still makes a mistake when triggering physical layer and resetting, and physical layer external reset counter adds " 1 " once more, when physical layer external reset counter during greater than preset count value N; Triggering system integral reset then, and take measures such as system's available resources degradation, link degradation.
In the technique scheme; The retransmission counter decision logic; Mainly be meant in the same message transmissions mistake of the link layer retransmission mechanism control procedure, when number of retransmissions promptly transmits when correct smaller or equal to said M message, flip-flop number reset clearly " 0 "; When same message number of retransmissions during, trigger the control that resets of bottom physical layer greater than M; The transmitting scene control logic is meant that mainly transmitting scene control logic saved system link transmission scene writes down current erroneous transmissions sequence number of message when triggering bottom physical layer resets, and preserves and retransmits the BUFFER pointer position; Physical layer is meant mainly from resetting decision logic whether the number of resets of in the physical layer reseting procedure, judging physical layer reaches the limit of system requirements, when reaching the full quota R, resets from the decision logic triggering system that resets, and makes system resource adopt degradation to use; Physical layer external reset decision logic is meant that mainly when multiple physical layer reset operation reached the limit N of system requirements, triggering system resetted when the error of transmission of same message causes multiple physical layer reset operation, makes system resource adopt degradation to use.
This multi-level data transfer control method has effectively guaranteed stability of data transmission and reliability, has also realized that the reliable of system resource effectively utilizes, and has high using value simultaneously in the high-end server system.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of claim of the present invention.
Claims (10)
1. a control method comprises, when link layer is received error message at receive direction, transmitting terminal is returned the NACK message, and concurrent re-transmission is characterized in that:
The value that retransmission counter is triggered in the intermediate layer adds 1; When same message number of retransmissions during, trigger said retransmission counter and reset smaller or equal to preset number of retransmissions value; When the number of retransmissions of same message during greater than preset said number of retransmissions value, the physical layer that triggers bottom resets.
2. control method as claimed in claim 1 is characterized in that, this control method also comprises:
The said physical layer of said link layer triggers resets once, and it adds 1 from reset counter the control of said physical layer, when the runback precedence number of said physical layer greater than preset runback precedence numerical value also during the message transmission success, the triggering system integral reset; When the said runback precedence number of said physical layer is the message transmission success smaller or equal to preset said runback precedence numerical value, triggers and saidly reset from reset counter.
3. control method as claimed in claim 2 is characterized in that, this control method also comprises:
When the number of retransmissions of same message during greater than preset said number of retransmissions value, the current data transmitting scene is preserved in the control of trigger link transmitting scene; The control of the said link transmission scene of said link layer triggers once, said its external reset counter of physical layer control adds 1, when the value of said external counter during greater than preset count value, the triggering system integral reset.
4. control method as claimed in claim 3 is characterized in that, the control of said link layer triggers link transmission scene once, said its external reset counter of physical layer control adds 1 step and comprises:
When the said physical layer of the same message generation of system transmissions re-transmission triggering resets; The said external reset counter of said physical layer adds 1; When the transmission once more of this message still made a mistake and triggers said physical layer once more and reset after said physical layer resets success, the said external reset counter of said physical layer added 1 once more.
5. like claim 2 or 3 described control methods, it is characterized in that this control method also comprises:
In the time of the triggering system integral reset, take system's available resources degradation and/or link degraded operation.
6. a control device is characterized in that, this control device comprises judge module and trigger module, wherein:
Said judge module is arranged to: judge whether link layer initiates to retransmit; Judge that also whether same message number of retransmissions is smaller or equal to preset number of retransmissions value;
Said trigger module is arranged to: when said judge module judged that said link layer initiates to retransmit, the value that triggers the retransmission counter in intermediate layer added 1; When said judge module is judged same message number of retransmissions smaller or equal to preset number of retransmissions value, trigger said retransmission counter and reset; The number of retransmissions of judging same message when said judge module is during greater than preset said number of retransmissions value, and the physical layer that triggers bottom resets.
7. control device as claimed in claim 6 is characterized in that this control device also comprises control module, wherein:
Said control module is arranged to: the said physical layer of said link layer triggers resets once, and that controls said physical layer adds 1 from reset counter;
Said judge module also is arranged to: whether message transmission is successful in preset runback precedence numerical value for said physical layer;
Said trigger module also is arranged to: the runback precedence number of judging said physical layer when said judge module is greater than preset runback precedence numerical value also during the message transmission success, the triggering system integral reset; When the said runback precedence number of judging said physical layer when said judge module is the message transmission success smaller or equal to preset said runback precedence numerical value, triggers and saidly reset from reset counter.
8. control device as claimed in claim 7 is characterized in that:
Said trigger module also is arranged to: the number of retransmissions of judging same message when said judge module is during greater than preset said number of retransmissions value, the control of trigger link transmitting scene;
Said control module also is arranged to: the said link transmission scene of said link layer triggers is controlled once, and the external reset counter of controlling said physical layer adds 1;
Said judge module also is arranged to: whether the value of judging said external counter is greater than preset count value;
Said trigger module also is arranged to: the value of judging said external counter when said judge module is during greater than preset count value, the triggering system integral reset.
9. control device as claimed in claim 8 is characterized in that, the external reset counter that said control module also is arranged to control in such a way said physical layer adds 1:
When the said physical layer of the same message generation of system transmissions re-transmission triggering resets; The said external reset counter of controlling said physical layer adds 1; When the transmission once more of this message still made a mistake and triggers said physical layer once more and reset after said physical layer resets success, the said external reset counter of controlling said physical layer added 1 once more.
10. like claim 7 or 8 described control device, it is characterized in that this device also comprises operational module, wherein:
Said operational module is arranged to: in the time of said trigger module triggering system integral reset, take system's available resources degradation and/or link degraded operation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210264423.5A CN102821043B (en) | 2012-07-27 | 2012-07-27 | Control method and device |
| PCT/CN2013/070187 WO2014015662A2 (en) | 2012-07-27 | 2013-01-08 | Control method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210264423.5A CN102821043B (en) | 2012-07-27 | 2012-07-27 | Control method and device |
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| CN102821043A true CN102821043A (en) | 2012-12-12 |
| CN102821043B CN102821043B (en) | 2015-06-17 |
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| CN201210264423.5A Active CN102821043B (en) | 2012-07-27 | 2012-07-27 | Control method and device |
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| WO (1) | WO2014015662A2 (en) |
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| CN103209063A (en) * | 2013-04-23 | 2013-07-17 | 浪潮电子信息产业股份有限公司 | Method for designing chip-level data transmission reliability |
| WO2019136686A1 (en) * | 2018-01-12 | 2019-07-18 | 北京小米移动软件有限公司 | Data transmission method and apparatus, and data sending terminal |
| CN112136285A (en) * | 2019-04-18 | 2020-12-25 | 北京小米移动软件有限公司 | Data transmission method, device and storage medium |
| CN112422239A (en) * | 2020-11-17 | 2021-02-26 | 展讯半导体(成都)有限公司 | Communication processing method, device, apparatus and storage medium |
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| CN103209063A (en) * | 2013-04-23 | 2013-07-17 | 浪潮电子信息产业股份有限公司 | Method for designing chip-level data transmission reliability |
| WO2019136686A1 (en) * | 2018-01-12 | 2019-07-18 | 北京小米移动软件有限公司 | Data transmission method and apparatus, and data sending terminal |
| CN112136285A (en) * | 2019-04-18 | 2020-12-25 | 北京小米移动软件有限公司 | Data transmission method, device and storage medium |
| CN112422239A (en) * | 2020-11-17 | 2021-02-26 | 展讯半导体(成都)有限公司 | Communication processing method, device, apparatus and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014015662A2 (en) | 2014-01-30 |
| CN102821043B (en) | 2015-06-17 |
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