CN106685604A - Data transmission control method, system and device - Google Patents
Data transmission control method, system and device Download PDFInfo
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- CN106685604A CN106685604A CN201611058951.XA CN201611058951A CN106685604A CN 106685604 A CN106685604 A CN 106685604A CN 201611058951 A CN201611058951 A CN 201611058951A CN 106685604 A CN106685604 A CN 106685604A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000012546 transfer Methods 0.000 claims description 41
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000006854 communication Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 241000209094 Oryza Species 0.000 description 5
- 235000007164 Oryza sativa Nutrition 0.000 description 5
- 235000021186 dishes Nutrition 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 235000009566 rice Nutrition 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
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Classifications
-
- 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
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
Abstract
The invention discloses a data transmission control method, system and device, and the method comprises the steps: enabling a receiving end to receive a message abandoning notification message transmitted when a transmitting end monitors a data message that the number of transmission times exceeds the maximum number of retransmission times; updating a local message receiving window according to the message abandoning notification message; and enabling the receiving end to transmit the message abandoning notification message to the transmitting end. According to the method, the receiving end can timely know the data message abandoned by the transmitting end, timely updates the local receiving window, guarantees the continuity of data transmission, reduces the waiting time, and avoids the interruption of communication data transmission.
Description
Technical field
The invention belongs to communication technical field, more particularly to a kind of data transfer control method, system and device.
Background technology
In the wireless network, when carrying out data transmission, in order to ensure being properly received for data, it will usually using re-transmission machine
Make to ensure that data correctly can reach receiving terminal from transmitting terminal.
Especially eat dishes without rice or wine signal quality it is poor when, if the data that transmitting terminal sends to receiving terminal, receiving terminal fails correctly to connect
Receive, including receiving terminal does not receive data and transmitting terminal is not received in the case of receiving confirmation, medium education
(Media Access Control, MAC) layer data may be retransmitted repeatedly, after retransmitting more than maximum times, the report
Text is dropped and no longer retransmits.Survey for receiving, reception window can always be waited and be dropped message, until receiving the message outside window
Afterwards window slipped by force, or received after the timer expiry of window correspondence position, actively window slips.This data are retransmitted
Solution, receiving terminal wait it is time-consuming longer, it is possible to the data outage of Internet can be caused, network layer data is have impact on
Transmission.
The content of the invention
In view of this, it is an object of the present invention to provide a kind of data transfer control method, system and device, to solve
When certainly there is packet loss in prior art, the receiving terminal stand-by period is long, the problem that network layer data may be caused to interrupt.In order to
Some aspects of embodiment to disclosing have a basic understanding, shown below is simple summary.The summarized section is not
Extensive overview, nor to determine key/critical component or describe the protection domain of these embodiments.Its sole purpose is
Some concepts are presented with simple form, in this, as the preamble of following detailed description.
The embodiment of the present invention provides a kind of data transfer control method, including：
Receiving terminal receiving end/sending end monitors transmission times and exceedes the message sent during the data message of maximum retransmission
Discard notification message；
Local message is updated according to the packet loss notification message and receives window；
Receiving terminal sends discard notification and confirms message to transmitting terminal.
In some optional embodiments, more than maximum retransmission data message be uplink message when, the message
Discard notification message includes：Traffic identifier FID and the data message sequence number for abandoning；
More than maximum retransmission data message be downlink message when, the packet loss notification message includes：Abandon
Data message sequence number, receiving terminal mark and traffic identifier FID.
In some optional embodiments, more than maximum retransmission data message be uplink message when, by request
Data resource Shi Sui roads resource request field carries the packet loss notification message；
When more than the data message of maximum retransmission being downlink message, the packet loss is sent by data infilled frame
Notification message.
In some optional embodiments, local message is updated according to the packet loss notification message and receives window,
Specifically include：
According to the traffic identifier FID carried in packet loss notification message, the corresponding messages of the FID are received into window and is slided
Walk, be updated to follow-up next message and receive window.
In some optional embodiments, also include：
If transmitting terminal does not receive discard notification confirms message, transmitting terminal is retransmitted according to the transmission time interval of setting
The packet loss notification message, until receiving discard notification confirms that message or sending times reach the maximum retransmission time of setting
Number.
The embodiment of the present invention also provides a kind of data transfer controller, is arranged on data message transmitting terminal, including：
Monitoring module, for the data message that monitoring transmission number of times exceedes maximum retransmission；
First sending module, loses for monitoring transmission message when transmission times exceedes the data message of maximum retransmission
Notification message is abandoned to receiving terminal；
First receiver module, local message reception is updated for receiving receiving terminal according to the packet loss notification message
The discard notification sent after window confirms message.
In some optional embodiments, first sending module, specifically for：
More than maximum retransmission data message be uplink message when, the packet loss notification message bag of transmission
Include：Traffic identifier FID and the data message sequence number for abandoning；
More than maximum retransmission data message be downlink message when, the packet loss notification message bag of transmission
Include：The data message sequence number of discarding, receiving terminal are identified and traffic identifier FID.
In some optional embodiments, first sending module, specifically for：
More than maximum retransmission data message be uplink message when, by request data resource Shi Sui road resource please
Field is asked to carry the packet loss notification message；
When more than the data message of maximum retransmission being downlink message, the packet loss is sent by data infilled frame
Notification message.
In some optional embodiments, if the discard notification for not receiving receiving terminal transmission confirms message, according to
The transmission time interval of setting retransmits the packet loss notification message, until receive discard notification and confirming message or retransmitting secondary
Number reaches the maximum number of retransmissions of setting.
The embodiment of the present invention also provides a kind of data transfer controller, is arranged on data message receiving terminal, including：
Second receiver module, for receiving end/sending end monitor transmission times more than maximum retransmission data message when
The packet loss notification message of transmission；
Update module, for updating local message according to the packet loss notification message window is received；
Second sending module, for sending discard notification to transmitting terminal message is confirmed.
In some optional embodiments, second receiver module, specifically for：
More than maximum retransmission data message be uplink message when, the packet loss notification message bag of reception
Include：Traffic identifier FID and the data message sequence number for abandoning；
More than maximum retransmission data message be downlink message when, the packet loss notification message bag of reception
Include：The data message sequence number of discarding, receiving terminal are identified and traffic identifier FID.
In some optional embodiments, second receiver module, specifically for：
More than maximum retransmission data message be uplink message when, receive by request data resource Shi Sui road money
The packet loss notification message that source request field is carried；
When more than the data message of maximum retransmission being downlink message, receive and the message is sent by data infilled frame
Discard notification message.
In some optional embodiments, the update module, specifically for：
According to the traffic identifier FID carried in packet loss notification message, the corresponding messages of the FID are received into window and is slided
Walk, be updated to follow-up next message and receive window.
The embodiment of the present invention also provides a kind of data transfer control system, including：Transmitting terminal and receiving terminal；
Above-mentioned data transfer controller is set in the transmitting terminal；
Above-mentioned data transfer controller is set in the receiving terminal.
Data transfer control method provided in an embodiment of the present invention, system and device, when transmitting terminal monitors transmission times
More than maximum retransmission data message when send packet loss notification message to receiving terminal, receiving terminal is logical according to packet loss
Know that the local message of information updating receives window so that receiving terminal can in time know the data message that transmitting terminal has been abandoned, and
Shi Gengxin local reception windows, the wait for reducing receiving terminal takes, it is ensured that the continuity of data transfer, it is to avoid communication data transfer
Interrupt the possibility for occurring.
For above-mentioned and related purpose, one or more embodiments include will be explained in below and in claim
In the feature that particularly points out.Description below and accompanying drawing describe some illustrative aspects in detail, and its indicate be only
Some modes in the utilizable various modes of principle of each embodiment.Other benefits and novel features will be with
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be will include all these aspects and they
Equivalent.
Description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, the reality with the present invention
Applying example is used to explain the present invention together, is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the flow chart of data transfer control method in the embodiment of the present invention one；
Fig. 2 is the flow chart of data transfer control method in the embodiment of the present invention two；
Fig. 3 is the topology example figure of packet loss notification message in the embodiment of the present invention two；
Fig. 4 is the exemplary plot that iSCSI receiving end window updates in the embodiment of the present invention two；
Fig. 5 is the flow chart of data transfer control method in the embodiment of the present invention three；
Fig. 6 is the topology example figure of packet loss notification message in the embodiment of the present invention three；
Fig. 7 is the structural representation of data transfer control system in the embodiment of the present invention；
Fig. 8 is a kind of structural representation of data transfer controller in the embodiment of the present invention；
Fig. 9 is the structural representation of another kind of data transfer controller in the embodiment of the present invention.
Specific embodiment
The following description and drawings fully illustrate specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, it is electric, process and it is other changes.Embodiment
Only represent possible change.Unless explicitly requested, otherwise single component and function are optional, and the order for operating can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This
The scope of bright embodiment includes the gamut of claims, and all obtainable equivalent of claims
Thing.Herein, these embodiments of the invention individually or generally can be represented with term " invention " that this is only
For convenience, and if in fact disclosing the invention more than, it is not meant to automatically limit the scope of the application to appoint
What single invention or inventive concept.
When retransmitting to solve data present in prior art, time-consuming for receiving terminal wait, it is possible to causes data to pass
Defeated interruption, affects the problem of network layer data transmission, the embodiment of the present invention to provide a kind of data transfer control method, can count
According to retransmission time out, during packet loss, realize that receiving terminal quickly updates reception window, reduce and wait time-consuming, it is to avoid affect Internet
Data transfer, it is ensured that the continuity of communication data transfer.
When wireless network transmissions are carried out, if the signal quality of eating dishes without rice or wine of MAC layer is poor, packet can be retransmitted repeatedly.When
Retransmit and exceed after maximum retransmission, then it is assumed that this data-message transmission failure, discarding is no longer retransmitted.In the present invention, this is claimed
It is drop bags to plant message.After there are drop bags, in order to the reception window of receiving terminal is quickly slipped, the present invention is proposed by transmitting terminal
Inform that the mode of drop bags occurs in receiving terminal, sliding window of pulling up a horse after receiving terminal is notified is to ensure the network message very first time
Recover.
Embodiment one
The data transfer control method that the embodiment of the present invention one is provided, its flow process is as shown in figure 1, comprise the steps：
Step S101：Transmitting terminal is monitored when transmission times exceedes the data message of maximum retransmission and sent to receiving terminal
Packet loss notification message.
There is the data message for retransmitting in transmitting terminal monitor in real time, when the transmission times of the data message for occurring to retransmit exceedes most
During big number of retransmissions, abandon the data message and notify receiving terminal.Wherein, data message is retransmitted reached and abandon not after maximum times
Retransmit again, it is believed that bust this, to such data message, be properly termed as Drop bags.
When data message is uplink message, i.e., when Drop bags occurs in end side, terminal is notified that access point (AP)；When work as
When data message is downlink message, i.e., when Drop bags occur in AP sides, AP is notified that terminal, so that no matter terminal or AP sides
When there are dropping packets, the Correspondent Node message that slips all without very long stand-by period is expended receives window.
Wherein, when the data message more than maximum retransmission is uplink message, packet loss notification message includes：Fail to be sold at auction
Know FID and the data message sequence number for abandoning；More than maximum retransmission data message be downlink message when, packet loss lead to
Know that message includes：The data message sequence number of discarding, receiving terminal are identified and traffic identifier FID.
When transmitting terminal sends packet loss notification message, can individually send, it is also possible to send with other message.
Wherein, when the data message more than maximum retransmission is uplink message, by request data resource Shi Sui road
Resource request field carries packet loss notification message；More than maximum retransmission data message be uplink message when, pass through
Data infilled frame sends packet loss notification message.
Step S102：The packet loss notification message that receiving terminal receiving end/sending end sends.
Different according to the mode that transmitting terminal sends, receiving terminal receives packet loss notification message from corresponding message, than
Such as packet loss notification message can be carried from obtaining with road resource request field, it is also possible to which message is obtained by data infilled frame
Discard notification message.
Step S103：Receiving terminal updates local message and receives window according to packet loss notification message.
The corresponding messages of FID are received window by receiving terminal according to the traffic identifier (FID) carried in packet loss notification message
Slip, be updated to follow-up next message and receive window.
Step S104：Receiving terminal sends discard notification and confirms message to transmitting terminal.
Receiving terminal updates and receives after window, and the discard notification for having updated message reception window to transmitting terminal transmission confirms to disappear
Breath, knows whether receiving terminal is successfully received packet loss notification message and have updated corresponding message and connects so as to transmitting terminal
Receive window.
Step S105：Transmitting terminal receives discard notification and confirms message.
Transmitting terminal receives discard notification and confirms after message, confirms that receiving terminal has been received by packet loss notification message and more
New reception window, so as to ensure that communication process in the continuous of data transfer do not interrupt.
The said method of the embodiment of the present invention, optionally, if transmitting terminal does not receive discard notification and confirms message, sends out
Sending end retransmits packet loss notification message according to the transmission time interval of setting, until receiving discard notification confirms message or weight
Send out the maximum number of retransmissions that number of times reaches setting.
Said method, even if occurring in that in poor signal quality of eating dishes without rice or wine and being dropped after the message for no longer retransmitting net is not resulted in yet
The cutout of network layers, it is ensured that the fluency of data flow.
In the present invention, data direction is divided into uplink and downlink, it is up to refer to that terminal sends out data AP receiving data, it is descending to be
Refer to that AP sends out data terminal receiving data.Introduce method for processing uplink and downlink in the following examples respectively.
Embodiment two
The data transfer control method that the embodiment of the present invention two is provided, is described in detail by taking uplink message as an example, its stream
Journey is as shown in Fig. 2 comprise the steps：
Step S201：Terminal monitor in real time transmission times exceedes the data message of maximum retransmission.
When there is data message and retransmitting, terminal can monitor in real time its number of retransmissions, when maximum retransmission is reached, then
The data message can be abandoned, is no longer retransmitted.
Step S202：Whether transmission times data message more than maximum retransmission is monitored.
If so, execution step S203；Otherwise return and continue executing with step S201.
Step S203：Terminal sends packet loss notification message to AP.
It is the processing mode for upstream data in the present embodiment, in the terminal, the mode of request data resource has two kinds,
One kind is independently transmitted resource request, and one kind is carried with road resource request when sending data.When drop bags occurs in upstream data
When, notified by sending to AP with road resource request field.Wherein, some fields are entered when referring to transmission data with road resource request
Row resource request, no longer individually sends out resource request frame.
The topology example of packet loss notification message as shown in figure 3, this is a kind of notice message data frame format, including：4
The data message sequence number (No. sn of drop bags, DROPSN) of the discarding of the traffic identifier (FID) and 12bit of bit (bit).
Step S204：AP receives packet loss notification message.
Step S205：AP receives window according to slip corresponding message of packet loss notification message.
AP is received after dropping packets notification message, and the bit map (bitmap) of the reception window of correspondence FID is updated.
It is illustrated in figure 4 and updates the exemplary plot that message receives window.Wherein：
Bitmap1 be update before bitmap, starting sequence number (startsn) be DROPSN, then search backward until
Occur 0 in bitmap, startsn is updated into the corresponding sn of the bit, and window above is all slipped, be updated to
Bitmap2, startsn are updated to DROPSN+6.Wherein, startsn is to receive the corresponding packet of first bit in window
Frame number.
Step S206：AP sends discard notification and confirms message to terminal.
AP updates and receives after window, and AP is received to terminal replies and confirmed that (ACK) informs that terminal has been received by notice message.
Step S207：Terminal receives discard notification and confirms message.
If terminal does not receive ACK, then it is assumed that dropping packets notification message does not send successfully, discarding report can be persistently sent
Till literary notification message is until sending success, DROPSN is updated to the sequence number (SN) number of last time DROP bag.
Embodiment three
The data transfer control method that the embodiment of the present invention three is provided, is described in detail by taking downlink message as an example, its stream
Journey is as shown in figure 5, comprise the steps：
Step S301：AP monitor in real time transmission times exceedes the data message of maximum retransmission.
When there is data message and retransmitting, AP can monitor in real time its number of retransmissions, when maximum retransmission is reached, then can
The data message is abandoned, is no longer retransmitted.
Step S302：Whether transmission times data message more than maximum retransmission is monitored.
If so, execution step S303；Otherwise return and continue executing with step S301.
Step S303：AP sends packet loss notification message to terminal.
It is the processing mode for downlink data in the present embodiment.In AP, there is a kind of data infilled frame (PAD-DATA),
Body section is invalid data, only plays occupy-place effect, and each physical frame can send out a PAD-DATA.In the present invention, AP passes through
PAD frames inform that terminal has drop bags sending notice.
The topology example of packet loss notification message is as shown in Figure 6.This is a kind of notice message data frame format, including：
The SSN (No. sn of drop bags) of 16bit, the STAID (Termination ID) and the FID of 16bit of 16bit.
Step S304：Terminal receives packet loss notification message.
Step S305：Terminal receives window according to slip corresponding message of packet loss notification message.
Terminal is received after dropping packets notification message, the bitmap of renewal correspondence FID reception windows, and by startsn more
New corresponding No. sn for 0 bit into first after SSN, update method is identical with up, referring in particular to shown in Fig. 4.
Optionally, the PAD-DATA need not return ACK, in order to ensure terminal can receive packet loss notification message,
Before new drop bags, the packet loss notification message that AP continuously can send out drop bags same reaches set point number, such as
100 times or 1000 times, if continuous 100 frame or 1000 frames all do not send successfully, then it is assumed that send failure, wait other to slide
Windowing mechanism.
Based on same inventive concept, the embodiment of the present invention also provides a kind of data transfer control system, its structure such as Fig. 7 institutes
Show, including：Transmitting terminal 10 and receiving terminal 20.
Data transfer controller 11 is set in transmitting terminal 10, and data transfer controller 11 is super for monitoring transmission number of times
Cross the data message of maximum retransmission；Monitor transmission message when transmission times exceedes the data message of maximum retransmission to lose
Notification message is abandoned to receiving terminal 20；Receive receiving terminal 20 to be updated after local message reception window according to packet loss notification message
The discard notification of transmission confirms message.
The data transfer controller 21 arranged in receiving terminal 20, data transfer controller 21 is used for receiving end/sending end 10
Monitor transmission times and exceed the packet loss notification message sent during the data message of maximum retransmission；According to packet loss
Notification message updates local message and receives window；Discard notification is sent to transmitting terminal 10 confirm message.
Transmitting terminal can be AP or terminal, and corresponding receiving terminal can be terminal or AP.Can set simultaneously in AP and terminal
Data transfer controller 11 and data transfer controller 21 are put, so as to both can also be used as reception as transmitting terminal
End.
Wherein, data transfer controller 11, can be arranged in transmitting terminal, its structure as shown in figure 8, including：Monitoring
Module 111, the first sending module 112 and the first receiver module 113.
Monitoring module 111, for the data message that monitoring transmission number of times exceedes maximum retransmission.
First sending module 112, for monitoring when transmission times exceedes the data message of maximum retransmission report is sent
Literary discard notification message is to receiving terminal.
First receiver module 113, local message reception is updated for receiving receiving terminal according to packet loss notification message
The discard notification sent after window confirms message.
Preferably, above-mentioned first sending module 112, is up report specifically for the data message more than maximum retransmission
Wen Shi, the packet loss notification message of transmission includes：Traffic identifier FID and the data message sequence number for abandoning；More than maximum re-transmission
When the data message of number of times is downlink message, the packet loss notification message of transmission includes：The data message sequence number of discarding, connect
Receiving end is identified and traffic identifier FID.
Preferably, above-mentioned first sending module 112, is up report specifically for the data message more than maximum retransmission
Wen Shi, by request data resource Shi Sui road resource request field packet loss notification message is carried；More than maximum re-transmission time
When several data messages is downlink message, packet loss notification message is sent by data infilled frame.
Preferably, above-mentioned first sending module 112, if the discard notification for being additionally operable to not receive receiving terminal transmission confirms
Message, then retransmit the packet loss notification message according to the transmission time interval of setting, until receiving discard notification confirmation
Message or sending times reach the maximum number of retransmissions of setting.
Wherein, data transfer controller 21, can be arranged in the receiving end, its structure as shown in figure 9, including：Second
Receiver module 211, the sending module 213 of update module 212 and second.
Second receiver module 211, for receiving end/sending end datagram of the transmission times more than maximum retransmission is monitored
The packet loss notification message sent when literary.
Update module 212, for updating local message according to packet loss notification message window is received.
Second sending module 213, for sending discard notification to transmitting terminal message is confirmed.
Preferably, above-mentioned second receiver module 211, is up report specifically for the data message more than maximum retransmission
Wen Shi, the packet loss notification message of reception includes：Traffic identifier FID and the data message sequence number for abandoning；More than maximum re-transmission
When the data message of number of times is downlink message, the packet loss notification message of reception includes：The data message sequence number of discarding, connect
Receiving end is identified and traffic identifier FID.
Preferably, above-mentioned second receiver module 211, is up report specifically for the data message more than maximum retransmission
Wen Shi, receives the packet loss notification message carried by request data resource Shi Sui road resource request field；More than maximum
When the data message of number of retransmissions is downlink message, receives and packet loss notification message is sent by data infilled frame.
Preferably, above-mentioned update module 212, specifically for the traffic identifier FID according to carrying in packet loss notification message,
The corresponding messages of FID are received into window to slip, follow-up next message is updated to and is received window.
The above-mentioned data transfer control method of the embodiment of the present invention and system, solve packet more than maximum retransmission
And the problem of network layer data interruption is caused after abandoning.It is second-rate when eating dishes without rice or wine, occur being dropped after message, transmitting terminal can be immediately
Notify that receiving terminal, receiving terminal receive the timely window that will receive after feedback and remove, the packet that such receiving terminal is received from eating dishes without rice or wine
Ethernet layer can be forwarded immediately to, network can immediately recover.
In existing protocol of wireless local area network, receiving window can arrange a timer to each bit, when there is MAC layer
After packet loss, receiving the timer expiry rear hatch of window correspondence position can slip, or have received the message outside window, and window can be strong
System is slipped.But this process is time-consuming longer, typically in 100ms or so, it is possible to network layer data stream can be caused to interrupt.The present invention
Will not always allow reception window to be waited for, after having data packet discarding, send immediately transmission notice and tell receiving terminal
There is packet drop, the notified rear horse back sliding window of receiving terminal, business datum can be recovered immediately.The physical frame of such as system
Length is 2ms, then network data will be recovered after most fast 2ms, substantially increase the fluency of network.
Notify to inform two kinds that the message of recipient's sliding window is not limited to be mentioned above in the present invention, can be according to existing
There is the concrete condition in system, the message or field of the existing performance of system are not affected using some to send notice message.
Unless otherwise specific statement, term such as process, calculate, computing, determination, show etc. can refer to it is one or more
Individual process or action and/or the process of computing system or similar devices, the action and/or process will be indicated as processing system
The data manipulation of physics (such as electronics) amount in the register or memory of system and it is converted into and is similarly represented as processing system
Memory, register physical quantity either in the storage of other this type of informations, transmitting or display devices other data.Information
Can be represented using any one of various different technologies and method with signal.For example, in above description
Data, instruction, order, information, signal, bit, symbol and the chip for referring to can use voltage, electric current, electromagnetic wave, magnetic field or grain
Son, light field or particle or its any combination are representing.
It should be understood that the particular order or level the step of during disclosed is the example of illustrative methods.Based on setting
Meter preference, it should be appreciated that during the step of particular order or level can be in the feelings of the protection domain without departing from the disclosure
Rearranged under condition.Appended claim to a method gives the key element of various steps with exemplary order, and not
It is to be limited to described particular order or level.
In above-mentioned detailed description, various features are combined together in single embodiment, to simplify the disclosure.No
This open method should be construed to reflect such intention, i.e. the embodiment of theme required for protection needs clear
The more features of feature stated in each claim to Chu.Conversely, that reflected such as appending claims
Sample, the present invention is in the state fewer than whole features of disclosed single embodiment.Therefore, appending claims is special
This is expressly incorporated into detailed description, and wherein each claim is alone as the single preferred embodiment of the present invention.
It should also be appreciated by one skilled in the art that with reference to various illustrative box, the mould of the embodiments herein description
Block, circuit and algorithm steps can be implemented as electronic hardware, computer software or its combination.In order to clearly demonstrate hardware and
Interchangeability between software, is carried out above to various illustrative parts, frame, module, circuit and step around its function
It is generally described.Hardware is implemented as this function and is also implemented as software, depending on specific application and to whole
The design constraint that system is applied.Those skilled in the art can be directed to each application-specific, be realized in the way of accommodation
Described function, but, it is this to realize that decision-making should not be construed as the protection domain away from the disclosure.
The step of method or algorithm with reference to described by the embodiments herein, can be embodied directly in hardware, be held by processor
Capable software module or its combination.Software module may be located at RAM memory, flash memory, ROM memory, eprom memory,
The storage of eeprom memory, register, hard disk, mobile disk, CD-ROM or any other form well known in the art is situated between
In matter.A kind of exemplary storage medium is connected to processor, so as to enable a processor to from the read information, and
Can be to the storage medium write information.Certainly, storage medium can also be the part of processor.Processor and storage medium
In may be located at ASIC.The ASIC may be located in user terminal.Certainly, processor and storage medium can also be used as discrete sets
Part is present in user terminal.
For software is realized, technology described in this application can be with module (for example, the mistake for performing herein described function
Journey, function etc.) realizing.These software codes can be stored in memory cell and by computing device.Memory cell can
With realize in processor, it is also possible to realize outside processor, in the case of the latter, it via various means by correspondence
Processor is coupled to, these are all well known in the art.
Described above includes the citing of one or more embodiments.Certainly, in order to above-described embodiment is described and description portion
The all possible combination of part or method is impossible, but it will be appreciated by one of ordinary skill in the art that each enforcement
Example can do further combinations and permutations.Therefore, embodiment described herein is intended to fall into appended claims
Protection domain in all such changes, modifications and variations.Additionally, with regard to the term used in specification or claims
"comprising", the word covers mode similar to term " including ", just as " including, " solved as link word in the claims
As releasing.Additionally, the use of any one term "or" in the specification of claims being to represent " non-exclusionism
Or ".
Claims (14)
1. a kind of data transfer control method, it is characterised in that include：
Receiving terminal receiving end/sending end monitors transmission times and exceedes the packet loss sent during the data message of maximum retransmission
Notification message；
Local message is updated according to the packet loss notification message and receives window；
Receiving terminal sends discard notification and confirms message to transmitting terminal.
2. the method for claim 1, it is characterised in that more than the data message of maximum retransmission be uplink message
When, the packet loss notification message includes：Traffic identifier FID and the data message sequence number for abandoning；
More than maximum retransmission data message be downlink message when, the packet loss notification message includes：The number of discarding
According to sequence of message number, receiving terminal mark and traffic identifier FID.
3. the method for claim 1, it is characterised in that more than the data message of maximum retransmission be uplink message
When, the packet loss notification message is carried by request data resource Shi Sui road resource request field；
When more than the data message of maximum retransmission being downlink message, the packet loss is sent by data infilled frame and is notified
Message.
4. the method for claim 1, it is characterised in that local message is updated according to the packet loss notification message
Window is received, is specifically included：
According to the traffic identifier FID carried in packet loss notification message, the corresponding messages of the FID are received into window and is slipped, more
Newly receive window for follow-up next message.
5. the method as described in claim 1-4 is arbitrary, it is characterised in that also include：
If transmitting terminal does not receive discard notification confirms message, transmitting terminal is retransmitted described according to the transmission time interval of setting
Packet loss notification message, until receiving discard notification confirms that message or sending times reach the maximum number of retransmissions of setting.
6. a kind of data transfer controller, it is characterised in that be arranged on data message transmitting terminal, including：
Monitoring module, for the data message that monitoring transmission number of times exceedes maximum retransmission；
First sending module, leads to for monitoring transmission packet loss when transmission times exceedes the data message of maximum retransmission
Know message to receiving terminal；
First receiver module, local message reception window is updated for receiving receiving terminal according to the packet loss notification message
The discard notification for sending afterwards confirms message.
7. device as claimed in claim 6, it is characterised in that first sending module, specifically for：
More than maximum retransmission data message be uplink message when, the packet loss notification message of transmission includes：Stream
Mark FID and the data message sequence number for abandoning；
More than maximum retransmission data message be downlink message when, the packet loss notification message of transmission includes：Lose
Data message sequence number, receiving terminal mark and the traffic identifier FID for abandoning.
8. device as claimed in claim 6, it is characterised in that first sending module, specifically for：
More than maximum retransmission data message be uplink message when, by request data resource Shi Sui road resource request word
Section carries the packet loss notification message；
When more than the data message of maximum retransmission being downlink message, the packet loss is sent by data infilled frame and is notified
Message.
9. the device as described in claim 6-8 is arbitrary, it is characterised in that first sending module, is additionally operable to：
If the discard notification for not receiving receiving terminal transmission confirms message, retransmit according to the transmission time interval of setting described
Packet loss notification message, until receiving discard notification confirms that message or sending times reach the maximum number of retransmissions of setting.
10. a kind of data transfer controller, it is characterised in that be arranged on data message receiving terminal, including：
Second receiver module, monitors when transmission times exceedes the data message of maximum retransmission for receiving end/sending end and sends
Packet loss notification message；
Update module, for updating local message according to the packet loss notification message window is received；
Second sending module, for sending discard notification to transmitting terminal message is confirmed.
11. devices as claimed in claim 10, it is characterised in that second receiver module, specifically for：
More than maximum retransmission data message be uplink message when, the packet loss notification message of reception includes：Stream
Mark FID and the data message sequence number for abandoning；
More than maximum retransmission data message be downlink message when, the packet loss notification message of reception includes：Lose
Data message sequence number, receiving terminal mark and the traffic identifier FID for abandoning.
12. devices as claimed in claim 10, it is characterised in that second receiver module, specifically for：
More than maximum retransmission data message be uplink message when, receive by request data resource Shi Sui road resource ask
The packet loss notification message for asking field to carry；
When more than the data message of maximum retransmission being downlink message, receive and the packet loss is sent by data infilled frame
Notification message.
13. devices as described in claim 10-12 is arbitrary, it is characterised in that the update module, specifically for：
According to the traffic identifier FID carried in packet loss notification message, the corresponding messages of the FID are received into window and is slipped, more
Newly receive window for follow-up next message.
14. a kind of data transfer control systems, it is characterised in that include：Transmitting terminal and receiving terminal；
Data transfer controller as described in claim 6-9 is arbitrary is set in the transmitting terminal；
Data transfer controller as described in claim 10-14 is arbitrary is set in the receiving terminal.
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| CN201611058951.XA CN106685604A (en) | 2016-11-28 | 2016-11-28 | Data transmission control method, system and device |
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| CN201611058951.XA CN106685604A (en) | 2016-11-28 | 2016-11-28 | Data transmission control method, system and device |
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Application publication date: 20170517 |