CN108306715A - A kind of method and system carrying out long file transmission based on Big Dipper generation satellite short message communication function - Google Patents
A kind of method and system carrying out long file transmission based on Big Dipper generation satellite short message communication function Download PDFInfo
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- CN108306715A CN108306715A CN201710018316.7A CN201710018316A CN108306715A CN 108306715 A CN108306715 A CN 108306715A CN 201710018316 A CN201710018316 A CN 201710018316A CN 108306715 A CN108306715 A CN 108306715A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/565—Conversion or adaptation of application format or content
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- General Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Astronomy & Astrophysics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Radio Relay Systems (AREA)
Abstract
The present invention relates to a kind of by the way that file declustering to be sent is less than the inclusive segment of preset length at several and is forwarded to receiving terminal by satellite plus after preset data frame head composition data packet, and receiving terminal is carried out packaging processing after receiving all data packets and generates the method and system for being carried out long file transmission based on Big Dipper generation satellite short message communication function of file.The present invention can transmit text, voice, video file by the fractionation and integration of file by Big Dipper short message system.
Description
Technical field
The present invention relates to satellite-based fields of communication technology, and in particular to communicates work(based on Big Dipper generation satellite short message
It can carry out the method and system of long file transmission.
Background technology
" Big Dipper No.1 " is to provide quickly positioning, brief digital message communication and time service to the user using geostationary satellite
Round-the-clock, the zonal global position system of one kind of service.In the case where mobile communication is interrupted, the short report of the Big Dipper can be utilized
The brief digital message of literary system transmission, is widely used in the multiple fields such as the disaster relief, ocean, forest fire protection.But current north
Struggle against short message system, can only once limit the content of more than 70 a bytes of transmission, can not transmit long message, document, audio, video etc.
File, and current Big Dipper short message system, by transmitting plant capacity, the influence of weather etc., the transmission success rate of short message
Only about 97% or so, lead to the possibility that may lose short message.
Invention content
The technical problem to be solved by the present invention is to：It is proposed that one kind is improved based on Big Dipper generation satellite short message communication function
It sends success rate and the method and system of long file transmission can be carried out.
The technical solution that the present invention proposes to solve above-mentioned technical problem（One）It is：One kind being based on the short report of Big Dipper generation satellite
The method that literary communication function carries out long file transmission, including following characteristics step：
A, file declustering to be sent is less than to the inclusive segment of preset length by transmitting terminal at several, on each inclusive segment
In addition preset data frame head composition data packet, the preset data frame head includes total packet number information and current Bale No. information；
B, all data packets to be sent are formed into one group of data packet queue to be sent；
C, data packet queue to be sent is forwarded to receiving terminal by satellite；
D, the receiving terminal carries out packaging processing after receiving all data packets and generates file.
Further, in the step b, when sending, the data packet queue is cycled through, in every transmission
Go out after a data packet and delete it from the data packet queue, until it is then to be sent that transmit queue, which is empty,；
The deleted data packet is temporarily stored in reservoir.
Further, in the step d, the receiving terminal is according to total packet number information and all received at present
The all current Bale No. infomation detection of data packet goes out the data packet Bale No. not yet received, and the receiving terminal forms one and includes
The repeating transmission of the data packet Bale No. information not yet received asks and by satellite backhaul to the transmitting terminal, the transmitting terminal
Progress data packet retransmission is asked to be extracted from the reservoir if the data packet that need to be retransmitted has been deleted according to the repeating transmission
Go out the data packet and is put back into data packet queue to be sent.
Further, in the step a, behaviour also is encrypted to the file to be sent before carrying out file declustering
Make；
In the step d, the receiving terminal is decrypted after carrying out packaging processing and generates clear text file.
Further, after the transmitting terminal receives the repeating transmission request, one is fed back to receiving terminal by satellite
For indicating to acknowledge receipt of the information for retransmitting request.
The technical solution that the present invention proposes to solve above-mentioned technical problem（Two）It is：One kind being based on the short report of Big Dipper generation satellite
The system that literary communication function carries out long file transmission, including transmitting terminal and receiving terminal；
The transmitting terminal includes file declustering module, data packet packetization module, packet sending module, retransmits request processing module
And temporary storage module；
The file declustering module is suitable for file declustering to be sent at several being less than the inclusive segment of preset length；
The data packet packetization module is suitable for adding preset data frame head composition data packet on each inclusive segment, described pre-
If data frame head includes total packet number information and current Bale No. information；
The packet sending module is suitable for all data packets to be sent being formed the queues to be sent of one group of data packet and by institute
It states data packet queue to be sent and receiving terminal is forwarded to by satellite, by it from the data packet after often sending out a data packet
It deletes and is temporarily stored in the temporary storage module in queue；
Receiving terminal includes packet-receiving module, detection module is sent out in data packet leakage, data packet retransmission requests to generate module and packaging
Module；
The data include that receiving module is suitable for receiving the data packet forwarded from satellite；
Data packet leakage hair detection module is suitable for according to the complete of total packet number information and all data packets received at present
The current Bale No. infomation detection in portion goes out the data packet Bale No. information not yet received；
It includes the data packet Bale No. letter not yet received that the data packet retransmission, which requests to generate module and suitably forms one,
The repeating transmission of breath asks and passes through satellite backhaul to the transmitting terminal；
The repeating transmission request processing module is suitable for being asked to carry out data packet retransmission processing according to the repeating transmission, is waited in the data packet
Increase the data packet that need to be retransmitted in transmit queue, if the data packet that need to be retransmitted has been deleted, is extracted from the reservoir
The data packet is simultaneously put back into data packet queue to be sent；
The packaging module is suitable for receive complete data packet and carries out packaging processing and generate file.
Further, the transmitting terminal includes encrypting module, and the receiving terminal includes deciphering module；
The encrypting module is suitable for that file to be sent is encrypted before fractionation and forms cryptograph files；
The deciphering module is suitable for being decrypted after the packaging is completed and forms clear text file.
The beneficial effects of the invention are as follows：
The present invention can transmit text, voice, video file by the fractionation and integration of file by Big Dipper short message system.
Major advantage is as follows：
1, by the data format of self-defined each message, the fractionation and combination of file can be carried out, so that passing through the Big Dipper
Short message system sends long file and is possibly realized.
2, it by the introducing of Bale No. concept, retransmits end and receiving terminal adds retransmission mechanism, customer service Big Dipper short message
System sends the problem of success rate is less than 100% every time, being capable of complete file transmission.
3, transmitting terminal is encrypted, and receiving terminal carries out corresponding decryption so that file can safe transmission, can be applied to
Need the system of safe transmission.
Specific implementation mode
Embodiment one
The present embodiment provides a kind of systems carrying out long file transmission based on Big Dipper generation satellite short message communication function, wherein wrapping
Include transmitting terminal and receiving terminal.
Transmitting terminal includes file declustering module, data packet packetization module, packet sending module, retransmits request processing module
And temporary storage module.
File declustering module is suitable for file declustering to be sent at several being less than the inclusive segment of preset length, in this implementation
In example, the length of inclusive segment is less than 60 bytes.
Data packet packetization module is suitable for adding preset data frame head composition data packet, preset data frame on each inclusive segment
Head includes total packet number information and current Bale No. information, naturally it is also possible to including being used to indicate the effective head feature identification of content
Field such as " $ DATA " and the length information for the total length from frame head to end of text.As preferably：The length of data packet
Degree is no more than 78 bytes.
Packet sending module is suitable for all data packets to be sent forming the queue to be sent of one group of data packet and will count
Receiving terminal is forwarded to by satellite according to queue to be sent is wrapped, deletes it from data packet queue after often sending out a data packet
It removes and is temporarily stored in temporary storage module.
Receiving terminal include packet-receiving module, data packet leakage hair detection module, data packet retransmission request to generate module and
Packaging module.
Data include that receiving module is suitable for receiving the data packet forwarded from satellite.
Data packet leakage hair detection module is suitable for being worked as according to the whole of total packet number information and all data packets received at present
Preceding Bale No. infomation detection goes out the data packet Bale No. information not yet received.
It includes the data packet Bale No. information not yet received that data packet retransmission, which requests to generate module and suitably forms one,
It retransmits and asks and pass through satellite backhaul to transmitting terminal.Request is retransmitted as " $ BDResend, length do not receive Bale No. 1, do not receive
To Bale No. 2, Bale No. 3 is not received ... ....”
Request processing module is retransmitted to be suitable for, according to request progress data packet retransmission processing is retransmitted, in data packet queue to be sent increasing
Add the data packet that need to be retransmitted, if the data packet that need to be retransmitted has been deleted, the data packet is extracted from reservoir and is put back into
In data packet queue to be sent.
Packaging module is suitable for receive complete data packet and carries out packaging processing and generate file.
It can be used as preferably：Transmitting terminal includes encrypting module, and receiving terminal includes deciphering module.
Encrypting module is suitable for that file to be sent is encrypted before fractionation and forms cryptograph files.
Deciphering module is suitable for being decrypted after packaging is completed and forms clear text file.
Embodiment two
A kind of method that long file transmission is carried out based on Big Dipper generation satellite short message communication function is present embodiments provided, including
Following steps：
A, file declustering to be sent is less than to the inclusive segment of preset length, in the present embodiment, inclusive segment by transmitting terminal at several
Length be less than 60 bytes.Preset data frame head composition data packet is added on each inclusive segment, preset data frame head includes
There are total packet number information and current Bale No. information, naturally it is also possible to including being used to indicate the effective head feature identification field of content such as
" $ DATA " and length information for the total length from frame head to end of text.As preferably：The length of data packet does not surpass
Cross 78 bytes.
B, all data packets to be sent are formed into one group of data packet queue to be sent.
C, data packet queue to be sent is forwarded to receiving terminal by satellite.
D, receiving terminal carries out packaging processing after receiving all data packets and generates file.
It can be used as preferably, in stepb, when sending, data packet queue be cycled through, in every transmission
Go out after a data packet and delete it from data packet queue, until it is then to be sent that transmit queue, which is empty, this is deleted
Data packet be temporarily stored in reservoir.
It can be used as preferably, in step d, receiving terminal is according to total packet number information and all data received at present
The all current Bale No. infomation detection of packet goes out the data packet Bale No. not yet received, and it includes not yet to receive that receiving terminal, which forms one,
The repeating transmission of the data packet Bale No. information arrived asks and by satellite backhaul to transmitting terminal, retransmit request such as " $ BDResend,
Length, does not receive Bale No. 1, does not receive Bale No. 2, does not receive Bale No. 3 ... ....”
Transmitting terminal carries if the data packet that need to be retransmitted has been deleted from reservoir according to request progress data packet retransmission is retransmitted
It takes out the data packet and is put back into data packet queue to be sent.
It can be used as preferably, in step a, behaviour also is encrypted to file to be sent before carrying out file declustering
Make；
In step d, receiving terminal is decrypted after carrying out packaging processing and generates clear text file.
It can be used as preferably, after transmitting terminal receives repeating transmission request, one is fed back to receiving terminal by satellite
For indicating to acknowledge receipt of the information for retransmitting request, such as " $ BDResend, OK ".
If receiving terminal cannot receive this and acknowledge receipt of the information for retransmitting request within the set duration, then it is assumed that the repeating transmission is asked
It asks and has lost, the repeating transmission will be sent again and asked.If receiving terminal receives $ BDResend, the message of OK, it was demonstrated that retransmit request pair
Side has been received by.It is avoided that loss of data in this way.
The present invention's is not limited to the above embodiment, and the technical solution of above-mentioned each embodiment of the invention can be handed over each other
Fork combination form new technical solution, in addition it is all using equivalent replacement formed technical solution, all fall within the present invention claims guarantor
It protects in range.
Claims (7)
1. a kind of method carrying out long file transmission based on Big Dipper generation satellite short message communication function, including following characteristics step
Suddenly：
A, file declustering to be sent is less than to the inclusive segment of preset length by transmitting terminal at several, on each inclusive segment
In addition preset data frame head composition data packet, the preset data frame head includes total packet number information and current Bale No. information；
B, all data packets to be sent are formed into one group of data packet queue to be sent；
C, data packet queue to be sent is forwarded to receiving terminal by satellite；
D, the receiving terminal carries out packaging processing after receiving all data packets and generates file.
2. the method that long file transmission is carried out based on Big Dipper generation satellite short message communication function according to claim 1,
It is characterized in that：In the step b, when sending, the data packet queue is cycled through, a number is often being sent out
It is deleted from the data packet queue according to after packet, until it is then to be sent that transmit queue, which is empty,；
The deleted data packet is temporarily stored in reservoir.
3. the method that long file transmission is carried out based on Big Dipper generation satellite short message communication function according to claim 2,
It is characterized in that：In the step d, the receiving terminal is according to total packet number information and all data packets received at present
All current Bale No. infomation detections go out the data packet Bale No. not yet received, the receiving terminal formed one include it is described not yet
The repeating transmission of the data packet Bale No. information received asks and by satellite backhaul to the transmitting terminal, and the transmitting terminal is according to
It retransmits request progress data packet retransmission and extracts the data from the reservoir if the data packet that need to be retransmitted has been deleted
It wraps and is put back into data packet queue to be sent.
4. the method that long file transmission is carried out based on Big Dipper generation satellite short message communication function according to claim 1,
It is characterized in that：
In the step a, operation also is encrypted to the file to be sent before carrying out file declustering；
In the step d, the receiving terminal is decrypted after carrying out packaging processing and generates clear text file.
5. the method that long file transmission is carried out based on Big Dipper generation satellite short message communication function according to claim 3,
It is characterized in that：After the transmitting terminal receives the repeating transmission request, one is fed back to for indicating to receiving terminal by satellite
Acknowledge receipt of the information for retransmitting request.
6. a kind of system carrying out long file transmission based on Big Dipper generation satellite short message communication function, including transmitting terminal and reception
End, it is characterised in that：
The transmitting terminal includes file declustering module, data packet packetization module, packet sending module, retransmits request processing module
And temporary storage module；
The file declustering module is suitable for file declustering to be sent at several being less than the inclusive segment of preset length；
The data packet packetization module is suitable for adding preset data frame head composition data packet on each inclusive segment, described pre-
If data frame head includes total packet number information and current Bale No. information；
The packet sending module is suitable for all data packets to be sent being formed the queues to be sent of one group of data packet and by institute
It states data packet queue to be sent and receiving terminal is forwarded to by satellite, by it from the data packet after often sending out a data packet
It deletes and is temporarily stored in the temporary storage module in queue；
Receiving terminal includes packet-receiving module, detection module is sent out in data packet leakage, data packet retransmission requests to generate module and packaging
Module；
The data include that receiving module is suitable for receiving the data packet forwarded from satellite；
Data packet leakage hair detection module is suitable for according to the complete of total packet number information and all data packets received at present
The current Bale No. infomation detection in portion goes out the data packet Bale No. information not yet received；
It includes the data packet Bale No. letter not yet received that the data packet retransmission, which requests to generate module and suitably forms one,
The repeating transmission of breath asks and passes through satellite backhaul to the transmitting terminal；
The repeating transmission request processing module is suitable for being asked to carry out data packet retransmission processing according to the repeating transmission, is waited in the data packet
Increase the data packet that need to be retransmitted in transmit queue, if the data packet that need to be retransmitted has been deleted, is extracted from the reservoir
The data packet is simultaneously put back into data packet queue to be sent；
The packaging module is suitable for receive complete data packet and carries out packaging processing and generate file.
7. the system that long file transmission is carried out based on Big Dipper generation satellite short message communication function according to claim 6,
It is characterized in that：The transmitting terminal includes encrypting module, and the receiving terminal includes deciphering module；
The encrypting module is suitable for that file to be sent is encrypted before fractionation and forms cryptograph files；
The deciphering module is suitable for being decrypted after the packaging is completed and forms clear text file.
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Cited By (12)
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| CN109613563A (en) * | 2019-01-14 | 2019-04-12 | 北京招通致晟科技有限公司 | Communication means and system for big-dipper satellite |
| CN109617945A (en) * | 2018-11-02 | 2019-04-12 | 北京达佳互联信息技术有限公司 | Sending method, sending device, electronic equipment and the readable medium of file transmission |
| CN110289934A (en) * | 2019-05-13 | 2019-09-27 | 湖北智途北斗空间信息技术有限公司 | A kind of data transmission coding coding/decoding method and system based on Big Dipper short message |
| CN110838893A (en) * | 2019-11-26 | 2020-02-25 | 北华航天工业学院 | Communication system based on Beidou system and communication method thereof |
| CN111147126A (en) * | 2019-12-26 | 2020-05-12 | 中国人民解放军空军勤务学院 | Beidou satellite short message communication data unpacking transmission method |
| CN111356095A (en) * | 2020-02-04 | 2020-06-30 | 北京天海达科技有限公司 | Beidou short message sharing terminal and Beidou short message receiving and sending method |
| CN112152914A (en) * | 2020-11-02 | 2020-12-29 | 北京华龙通科技有限公司 | Instant messaging method and system based on Beidou short message |
| CN112330946A (en) * | 2021-01-07 | 2021-02-05 | 航天宏图信息技术股份有限公司 | Power grid platform data communication method, power grid data transmission method, device and system |
| CN113038398A (en) * | 2021-03-24 | 2021-06-25 | 广东海聊科技有限公司 | Beidou short message communication method and system |
| CN113316102A (en) * | 2021-05-26 | 2021-08-27 | 中国电子科技集团公司第五十四研究所 | Information high-reliability transmission method based on Beidou short message |
| CN113676844A (en) * | 2021-09-27 | 2021-11-19 | 北京星网船电科技有限公司 | Multipoint data communication method and system based on Beidou short message |
| CN113747377A (en) * | 2020-05-29 | 2021-12-03 | 上海瀛联信息科技股份有限公司 | Big dipper command system of big data file is sent in coordination |
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| CN111147126A (en) * | 2019-12-26 | 2020-05-12 | 中国人民解放军空军勤务学院 | Beidou satellite short message communication data unpacking transmission method |
| CN111356095A (en) * | 2020-02-04 | 2020-06-30 | 北京天海达科技有限公司 | Beidou short message sharing terminal and Beidou short message receiving and sending method |
| CN113747377A (en) * | 2020-05-29 | 2021-12-03 | 上海瀛联信息科技股份有限公司 | Big dipper command system of big data file is sent in coordination |
| CN112152914A (en) * | 2020-11-02 | 2020-12-29 | 北京华龙通科技有限公司 | Instant messaging method and system based on Beidou short message |
| CN112330946A (en) * | 2021-01-07 | 2021-02-05 | 航天宏图信息技术股份有限公司 | Power grid platform data communication method, power grid data transmission method, device and system |
| CN113038398A (en) * | 2021-03-24 | 2021-06-25 | 广东海聊科技有限公司 | Beidou short message communication method and system |
| CN113316102A (en) * | 2021-05-26 | 2021-08-27 | 中国电子科技集团公司第五十四研究所 | Information high-reliability transmission method based on Beidou short message |
| CN113676844A (en) * | 2021-09-27 | 2021-11-19 | 北京星网船电科技有限公司 | Multipoint data communication method and system based on Beidou short message |
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