CN109286477A - A kind of data transmission method for supporting out-of-order transfer - Google Patents
A kind of data transmission method for supporting out-of-order transfer Download PDFInfo
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- CN109286477A CN109286477A CN201811279149.2A CN201811279149A CN109286477A CN 109286477 A CN109286477 A CN 109286477A CN 201811279149 A CN201811279149 A CN 201811279149A CN 109286477 A CN109286477 A CN 109286477A
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- data packet
- receiving end
- transmission data
- serial number
- transmitting terminal
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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
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
- H04L1/1841—Resequencing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/90—Buffering arrangements
- H04L49/9057—Arrangements for supporting packet reassembly or resequencing
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses the data transmission methods for supporting out-of-order transfer, comprising: receiving end sends the data packet of request transformation task to transmitting terminal, so that transmitting terminal generates multiple transmission data packets according to the data volume of setting unit data packet size and data to be transmitted；Receiving end receives the quantity for the transmission data packet that transmitting terminal is sent；Receiving end memory space is opened up according to the quantity of setting unit data packet size and transmission data packet；Receiving end receives multiple transmission data packets that transmitting terminal is sent, and multiple transmission data packets are stored in the corresponding position of memory space according to sequence serial number.The present invention has the advantage that can determine the size of unit data packet according to the demand between transmitting terminal and receiving end, and data to be transmitted is split according to the size of unit data packet, and sequence serial number is set to the data packet of each fractionation, it is ranked up in this way when receiving end receives data packet according to sequence serial number, so as to realize the out-of-order transfer between transmitting terminal and receiving end.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of data transmission method for supporting out-of-order transfer.
Background technique
It is usually used when carrying out communication data transmission between strong smart machine or between smart machine and PC
One continuous process carries out the sequential delivery of data, it is desirable that cannot interrupt when transmission, as long as partial data goes out in transmission
Mistake will lead to entirely transmit failure.
Can be bigger using the probability that this conventional transmission mode malfunctions in the complicated working environment of reply, and intelligence is set
When the working environment at standby place is harsher, the stability decline of whole system will lead to
Summary of the invention
The present invention is directed at least solve one of above-mentioned technical problem.
For this purpose, the first purpose of this invention is to propose a kind of data transmission method for supporting out-of-order transfer, can make
Receiving end receives no matter in what order after receiving all data packets, can finally restore complete data.
To achieve the goals above, embodiment of the invention discloses a kind of data transmission method for supporting out-of-order transfer,
The following steps are included: receiving end sends the data packet of request transformation task, the data packet of the request transformation task to transmitting terminal
Hardware address and setting unit data packet size including the receiving end, so that the transmitting terminal is according to the setting units
Multiple transmission data packets are generated according to the data volume of packet size and data to be transmitted, wherein the multiple transmission data packet all has
The hardware address of corresponding sequence serial number and the receiving end；The receiving end receives the transmission data packet that the transmitting terminal is sent
Quantity；The receiving end storage sky is opened up according to the quantity of the setting unit data packet size and the transmission data packet
Between；The receiving end receives the multiple transmission data packet that the transmitting terminal is sent, and the multiple transmission data packet is pressed
Phototypesetting sequence serial number is stored in the corresponding position of the memory space.
The data transmission method according to an embodiment of the present invention for supporting out-of-order transfer, can according to transmitting terminal and receiving end it
Between demand determine the size of unit data packet, and data to be transmitted is split according to the size of unit data packet, and right
The data packet setting sequence serial number of each fractionation, is ranked up when receiving end receives data packet according to sequence serial number in this way, from
And the out-of-order transfer between transmitting terminal and receiving end may be implemented.
In addition, the data transmission method according to the above embodiment of the present invention for supporting out-of-order transfer can also have it is following attached
The technical characteristic added:
Optionally, further includes: detect the transmission data received when receiving the multiple transmission data packet in the receiving end
Whether packet has the hardware address of the receiving end；If the transmission data packet received is with not having the hardware of the receiving end
Location, then the transmission data packet received described in discarding.
Optionally, further includes: the receiving end has detected whether unreceived transmission data packet in the memory space；
If there is unreceived data packet, then the receiving end sends request transmission instruction to the transmitting terminal, and the request transmission refers to
Enabling includes the sequence serial number of unreceived transmission data packet and the MAC Address of the receiving end, so that the transmitting terminal is according to institute
It states and does not receive the transmission data packet that the sequence serial number for transmitting data packet obtains corresponding to the sequence serial number；The receiving end receives institute
The transmission data packet of the correspondence sequence serial number of transmitting terminal transmission is stated, and the transmission data packet of the correspondence sequence serial number is deposited
Storage is in the corresponding position for vacating space.
Optionally, the receiving end receives the transmission data packet for the correspondence sequence serial number that the transmitting terminal is sent, and
The transmission data packet of the correspondence sequence serial number is stored in described the step of vacating the corresponding position in space, is specifically included: institute
State the transmission data packet that receiving end receives the correspondence sequence serial number that the transmitting terminal is sent；The receiving end verifies corresponding institute
Whether the transmission data packet for stating sequence serial number is correct, stores the transmission data packet of the correspondence sequence serial number after verification is correct
In the corresponding position for vacating space.
Optionally, described to be verified as cyclic redundancy check code verification.
For this purpose, second object of the present invention is to propose a kind of data transmission method for supporting out-of-order transfer, can make
Transmitting terminal sends data to receiving end random ordering, and receiving end can finally restore complete data.
To achieve the goals above, embodiment of the invention discloses a kind of data transmission method for supporting out-of-order transfer,
The following steps are included: transmitting terminal obtains the data packet for the request transformation task that receiving end is sent, the number of the request transformation task
It include the hardware address and setting unit data packet size of the receiving end according to packet；The transmitting terminal is according to the setting units
Multiple transmission data packets are generated according to the data volume of packet size and data to be transmitted, wherein the multiple transmission data packet all has
The hardware address of corresponding sequence serial number and the receiving end；The transmitting terminal sends the number of transmission data packet to the receiving end
Amount, so that storage sky is opened up according to the quantity of the setting unit data packet size and the transmission data packet in the receiving end
Between；The multiple transmission data packet that the transmitting terminal is sent to the receiving end, so that the receiving end is by the multiple biography
Transmission of data packet is stored in the corresponding position of the memory space according to sequence serial number.
The data transmission method according to an embodiment of the present invention for supporting out-of-order transfer, can according to transmitting terminal and receiving end it
Between demand determine the size of unit data packet, and data to be transmitted is split according to the size of unit data packet, and right
The data packet setting sequence serial number of each fractionation, is ranked up when receiving end receives data packet according to sequence serial number in this way, from
And the out-of-order transfer between transmitting terminal and receiving end may be implemented.
In addition, the data transmission method according to the above embodiment of the present invention for supporting out-of-order transfer can also have it is following attached
The technical characteristic added:
Optionally, further includes: the receiving end has detected whether unreceived transmission data packet in the memory space；
If there is unreceived data packet, then the receiving end sends request transmission instruction to the transmitting terminal, and the request transmission refers to
Enable includes the sequence serial number of unreceived transmission data packet and the MAC Address of the receiving end；The transmitting terminal according to it is described not
The sequence serial number for receiving transmission data packet obtains corresponding to the transmission data packet of the sequence serial number；The transmitting terminal is to the reception
Hold send correspondence it is described sequence serial number transmission data packet, so as to the receiving end by correspondence it is described sequence serial number transmission number
The corresponding position for vacating space is stored according to packet.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of the data transmission method of the support out-of-order transfer of one embodiment of the invention；
Fig. 2 is the flow chart of the data transmission method of the support out-of-order transfer of another embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
Referring to following description and drawings, it will be clear that these and other aspects of the embodiment of the present invention.In these descriptions
In attached drawing, some particular implementations in the embodiment of the present invention are specifically disclosed, to indicate to implement implementation of the invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, of the invention
Embodiment includes all changes, modification and the equivalent fallen within the scope of the spirit and intension of attached claims.
The data transmission method of support out-of-order transfer of the invention is described below in conjunction with attached drawing.
Fig. 1 is the flow chart of the data transmission method of the support out-of-order transfer of one embodiment of the invention.As shown in Figure 1,
The data transmission method of the support out-of-order transfer of one embodiment of the invention, comprising the following steps:
S110: receiving end sends the data packet of request transformation task to transmitting terminal, requests the data packet of transformation task to include
The hardware address of receiving end and setting unit data packet size, so that transmitting terminal is according to setting unit data packet size and to be transmitted
The data volume of data generates multiple transmission data packets.Wherein, multiple transmission data packets all have corresponding sequence serial number and reception
The hardware address at end.
Specifically, it transmits the preparation stage, the receiving end of demand data sends a request to the transmitting terminal for providing data and passes
The data packet of defeated task, the data packet include instruction head, the MAC Address of equipment itself and setting unit data packet size.At this
In one embodiment of invention, unit data packet size is set as 256 bytes.
After transmitting terminal receives the data packet of request transformation task, data to be transmitted is split according to 256 byte-sizeds
It obtains multiple transmission data packets and transmits the quantity of data packet.Then a response data packet is replied, comprising instruction head, whether together
The total number of meaning transformation task (0x00 is disagreed, and 0x01 agrees to), the MAC Address of transmitting terminal and subpackage
S120: receiving end receives the quantity for the transmission data packet that transmitting terminal is sent；
Specifically fall, transmitting terminal replys a response data packet to receiving end, such as table 1, response data include instruction head, whether
Agree to the quantity of transformation task (0x00 is disagreed, and 0x01 agrees to), the MAC Address of transmitting terminal and transmission data packet.
1 response data packet of table
| Instruct head | Whether agree to | Equipment MAC | Transmit the quantity of data packet |
| 0x800007 | 0x00/0x01 | 6bytes | 4bytes |
S130: receiving end memory space is opened up according to the quantity of setting unit data packet size and transmission data packet.
Specifically, after receiving end receives transformation task request response, judge whether transmitting terminal is agreed to transmit, read if agreement
It takes subpackage total, the array of a record subpackage reception condition is established according to subpackage sum, and open up memory space.It needs to illustrate
, in step S120 and S130, response data packet can not also include whether to agree to the instruction of transmission.
S140: receiving end receives multiple transmission data packets that transmitting terminal is sent, and by multiple transmission data packets according to sequence
Serial number is stored in the corresponding position of memory space.
Specifically, each transmission data packet of transmitting terminal transmitting terminal includes sequence serial number.Receiving end is receiving each biography
When transmission of data packet, the corresponding position of memory space is stored according to the sequence serial number of the transmission data packet, so as to realize hair
Out-of-order transfer between sending end and receiving end.
In one embodiment of the invention, the data transmission method of out-of-order transfer is supported further include:
Receiving end has detected whether unreceived transmission data packet in memory space.After the completion of the initialization of receiving end, time
The array of record subpackage reception condition is gone through, if if the subpackage read does not receive, sending acquisition this point to transmitting terminal
The request command of packet, request command include the MAC Address and packet serial number of instruction head, equipment itself, as shown in table 5
If there is unreceived data packet, then receiving end sends request transmission instruction, request transmission instruction packet to transmitting terminal
Include the sequence serial number of unreceived transmission data packet and the MAC Address (as shown in table 2) of receiving end.
Table 2 transmits data packet
| Instruct head | Equipment MAC | Sort serial number |
| 0x000008 | 6bytes | 4bytes |
Transmitting terminal obtains the transmission data packet of corresponding sequence serial number according to the sequence serial number for not receiving transmission data packet.It sends
It holds after receiving request and sending the request command for specifying data packet, it is assumed that each data package size is set as in request command
256bytes calculates deviation post (packet serial number x256byte) according to the data packet serial number in order and obtains deviation post and start
The data of 256bytes data backward, discontented 256bytes take the data of actual size, carry out CRC16 verification to this segment data,
Data and check code are sent according to specified format encapsulation (as shown in table 3).
Table 3 transmits specified packet instruction format
Receiving end receives the transmission data packet for the corresponding sequence serial number that transmitting terminal is sent, and the transmission that will correspond to sequence serial number
Data packet is stored in the corresponding position for vacating space.In one embodiment of the invention, it is verified as cyclic redundancy check code school
It tests.
Specifically, receiving end receive transmission data packet after, first read device mac address therein see whether oneself
The transmitting terminal MAC Address of transformation task, reads packet serial number therein again if being, the array of inspection record subpackage reception condition,
Do not have to processing if having received before this data packet, if not receiving this data packet before, reads data and carry out CRC16
The check code of verification, check code and data packet compares, and unanimously then calculates offset (packet serial number according to packet serial number
X256byte), correct position is stored data into, finally marking the data packet state of this serial number is to have received.
The data transmission method according to an embodiment of the present invention for supporting out-of-order transfer, receiving end request data in transmission process
It is that two separate threads are not interfere with each other in work with data are received, if an incorrect data packet is received, without sending out immediately
The order for reacquiring this data packet is sent, can be abandoned regardless of after the array for having traversed a subpackage reception condition from the beginning
Start to traverse a pass group again and requests the data packet of missing that can guarantee to receive in this way until all data packets have received
End will not be blocked because of awaiting a response.All data packets all end of transmissions or emergency case need to cancel or reset transmission
For the transmittable cancellation assignment instructions of task, receiving end and transmitting terminal to other side, instruction includes data head and equipment self MAC
Address.
Fig. 2 is the flow chart of the data transmission method of the support out-of-order transfer of another embodiment of the present invention.Such as Fig. 2 institute
Show, the data transmission method of the support out-of-order transfer of another embodiment of the present invention, comprising the following steps:
S210: transmitting terminal obtains the data packet for the request transformation task that receiving end is sent, and requests the data packet of transformation task
Hardware address and setting unit data packet size including receiving end；
S220: transmitting terminal generates multiple transmission data according to the data volume of setting unit data packet size and data to be transmitted
Packet, wherein multiple transmission data packets all have the hardware address of corresponding sequence serial number and receiving end；
S230: transmitting terminal sends the quantity of transmission data packet to receiving end, so that receiving end is according to setting unit data packet
The quantity of size and transmission data packet opens up memory space；
S240: multiple transmission data packets that transmitting terminal is sent to receiving end, so that multiple transmission data packets are pressed in receiving end
Phototypesetting sequence serial number is stored in the corresponding position of memory space.
The data transmission method according to an embodiment of the present invention for supporting out-of-order transfer, can according to transmitting terminal and receiving end it
Between demand determine the size of unit data packet, and data to be transmitted is split according to the size of unit data packet, and right
The data packet setting sequence serial number of each fractionation, is ranked up when receiving end receives data packet according to sequence serial number in this way, from
And the out-of-order transfer between transmitting terminal and receiving end may be implemented.
In one embodiment of the invention, the data transmission method of out-of-order transfer is supported further include: receiving end is storing
Unreceived transmission data packet has been detected whether in space.If there is unreceived data packet, then receiving end is sent to transmitting terminal
Request transmission instruction, request transmission instruction include the sequence serial number of unreceived transmission data packet and the MAC Address of receiving end.Hair
Sending end obtains the transmission data packet of corresponding sequence serial number according to the sequence serial number for not receiving transmission data packet.Transmitting terminal is to receiving end
The transmission data packet of the corresponding sequence serial number of transmission is vacated so that the transmission data packet of corresponding sequence serial number is stored in by receiving end
The corresponding position in space.
It should be noted that the specific embodiment of the data transmission method of the support out-of-order transfer of the present embodiment with it is previous
The specific embodiment of the data transmission method of the support out-of-order transfer of embodiment is similar, and difference is only that main body difference, this reality
The main body for applying example is transmitting terminal, and the main body of previous embodiment is receiving end, and other contents are identical, in order to reduce redundancy, do not do superfluous
It states.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is by claim and its equivalent limits.
Claims (7)
1. a kind of data transmission method for supporting out-of-order transfer, which comprises the following steps:
Receiving end sends the data packet of request transformation task to transmitting terminal, and the data packet of the request transformation task includes described connects
The hardware address of receiving end and setting unit data packet size, so as to the transmitting terminal according to the setting unit data packet size with
The data volume of data to be transmitted generates multiple transmission data packets, wherein the multiple transmission data packet all has corresponding sequence
The hardware address of serial number and the receiving end；
The receiving end receives the quantity for the transmission data packet that the transmitting terminal is sent；
The receiving end memory space is opened up according to the quantity of the setting unit data packet size and the transmission data packet；
The receiving end receives the multiple transmission data packet that the transmitting terminal is sent, and the multiple transmission data packet is pressed
Phototypesetting sequence serial number is stored in the corresponding position of the memory space.
2. the data transmission method according to claim 1 for supporting out-of-order transfer, which is characterized in that further include:
Detect whether the transmission data packet received has the reception when receiving the multiple transmission data packet in the receiving end
The hardware address at end；
If the transmission data packet received does not have the hardware address of the receiving end, the transmission data received described in discarding
Packet.
3. the data transmission method according to claim 1 for supporting out-of-order transfer, which is characterized in that further include:
The receiving end has detected whether unreceived transmission data packet in the memory space；
If there is unreceived data packet, then the receiving end sends request transmission instruction to the transmitting terminal, and the request passes
Defeated instruction includes the sequence serial number of unreceived transmission data packet and the MAC Address of the receiving end, so as to the transmitting terminal root
Obtain corresponding to the transmission data packet of the sequence serial number according to the sequence serial number for not receiving transmission data packet；
The receiving end receives the transmission data packet for the correspondence sequence serial number that the transmitting terminal is sent, and will the corresponding row
The transmission data packet of sequence serial number is stored in the corresponding position for vacating space.
4. the data transmission method according to claim 3 for supporting out-of-order transfer, which is characterized in that the receiving end receives
The transmission data packet of the correspondence that the transmitting terminal the is sent sequence serial number, and by the transmission data packet of the correspondence sequence serial number
It is stored in described the step of vacating the corresponding position in space, is specifically included:
The receiving end receives the transmission data packet for the correspondence sequence serial number that the transmitting terminal is sent；
Whether the transmission data packet of the corresponding sequence serial number of receiving end verification correct, after verification is correct will it is corresponding described in
The transmission data packet of sequence serial number is stored in the corresponding position for vacating space.
5. the data transmission method according to claim 4 for supporting out-of-order transfer, which is characterized in that described to be verified as recycling
Redundancy check code check.
6. a kind of data transmission method for supporting out-of-order transfer, which comprises the following steps:
Transmitting terminal obtains the data packet for the request transformation task that receiving end is sent, and the data packet of the request transformation task includes institute
State the hardware address and setting unit data packet size of receiving end；
The transmitting terminal generates multiple transmission data according to the data volume of the setting unit data packet size and data to be transmitted
Packet, wherein the multiple transmission data packet all has the hardware address of corresponding sequence serial number and the receiving end；
The transmitting terminal sends the quantity of transmission data packet to the receiving end, so that the receiving end is according to the setting unit
The quantity of data package size and the transmission data packet opens up memory space；
The multiple transmission data packet that the transmitting terminal is sent to the receiving end, so that the receiving end is by the multiple biography
Transmission of data packet is stored in the corresponding position of the memory space according to sequence serial number.
7. the data transmission method according to claim 6 for supporting out-of-order transfer, which is characterized in that further include:
The receiving end has detected whether unreceived transmission data packet in the memory space；
If there is unreceived data packet, then the receiving end sends request transmission instruction to the transmitting terminal, and the request passes
Defeated instruction includes the sequence serial number of unreceived transmission data packet and the MAC Address of the receiving end；
The transmitting terminal obtains corresponding to the transmission number of the sequence serial number according to the sequence serial number for not receiving transmission data packet
According to packet；
The transmission data packet of the correspondence that the transmitting terminal is sent to the receiving end sequence serial number, so that the receiving end will
The transmission data packet of the corresponding sequence serial number is stored in the corresponding position for vacating space.
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| CN113064857A (en) * | 2021-03-17 | 2021-07-02 | 歌尔科技有限公司 | File transmission control method, equipment and medium |
| CN112968907A (en) * | 2021-03-25 | 2021-06-15 | 北京鼎事兴教育咨询有限公司 | Data transmission method, data storage method, data query method, medium, and device |
| CN112968907B (en) * | 2021-03-25 | 2023-04-28 | 北京鼎事兴教育咨询有限公司 | Data transmission method, data storage method, data query method, medium and device |
| CN114697279A (en) * | 2022-03-23 | 2022-07-01 | 北京航天拓扑高科技有限责任公司 | Method for transmitting data files by multi-channel sub-packets |
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