CN106453160A - Beidou data transmission method and system - Google Patents
Beidou data transmission method and system Download PDFInfo
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- CN106453160A CN106453160A CN201610887299.6A CN201610887299A CN106453160A CN 106453160 A CN106453160 A CN 106453160A CN 201610887299 A CN201610887299 A CN 201610887299A CN 106453160 A CN106453160 A CN 106453160A
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- short message
- big dipper
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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
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (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 invention discloses a Beidou data transmission method and system. A Beidou sending terminal compresses long message data according to a data compression algorithm at first, subpackages the long message data into short message data packets, and then, sequentially sends the short message data packets; therefore, the total transmission data volume can be reduced; the Beidou data transmission delay can be reduced; the occupation rate of data transmission on a Beidou satellite channel can be reduced; simultaneously, original plaintext data can be converted into unreadable ciphertext through data compression; and thus, the Beidou data transmission security is improved.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of Beidou data transmission and system.
Background technology
The Beidou satellite navigation system of China has the short message communication function of uniqueness, can provide the user simple data
Transmission service.But, because every short message sends the limited of byte number, the length end to end of deduction protocol encapsulation, a message
Have and can only effectively send the content that length is 71 bytes, and the Big Dipper send terminal need could to send every 60 seconds one short
Message, the data message therefore intactly sending 500 bytes needs 8 minutes.Further, since satellite communication has one
The fixed bit error rate and packet loss, receive accuracy rate for improving, and same data message needs to carry out the transmission of 2 to 3 wheels.This meaning
, sending a big data bag by Beidou satellite system needs the time of 16 to 24 minutes, and propagation delay time is larger.In addition, it is northern
Using clear-text way transmission, confidentiality is poor, exists and is trapped the problem of data safety cracking for bucket short message communication.
Content of the invention
The technical problem to be solved is：A kind of safe and efficient Beidou data transmission and system are provided.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：A kind of Beidou data transmission, including
Following steps：
S1, the Big Dipper send terminal and according to data compression algorithm, long message data are compressed；
S2, by compression after long message data carry out subpackage process, obtain short message packet；
S3, sequentially send described short message packet.
The invention still further relates to a kind of Big Dipper data transmission system, including：The Big Dipper sends terminal, for compressing long message number
According to carrying out subpackage to the long message data after compression and process obtaining short message packet, and be used for sending described short message data
Bag.
The beneficial effects of the present invention is：Long message data is packetized into short message again according to after data compression algorithm compression
Packet is transmitted, it is possible to reduce the total amount of data of transmission, reduces the time delay of Big Dipper data transfer, reduces data transfer to north
The occupancy of bucket satellite channel；Simultaneously further through data compression, original clear data is converted into unreadable ciphertext, strengthens
The confidentiality of Big Dipper data transfer.
Brief description
Fig. 1 sends terminal works flow chart for the Big Dipper of the present invention；
Fig. 2 is that the embodiment of the present invention one Big Dipper sends the flow chart that terminal-pair long message data carries out subpackage；
Fig. 3 is Big Dipper receiving terminal workflow diagram of the present invention；
The flow chart that Fig. 4 packages to short message packet for the embodiment of the present invention one Big Dipper receiving terminal；
Fig. 5 is Big Dipper data transmission system block diagram of the present invention；
Fig. 6 is that the embodiment of the present invention two Big Dipper sends terminal schematic diagram；
Fig. 7 is the embodiment of the present invention two Big Dipper receiving terminal schematic diagram.
Specific embodiment
By describing the technology contents of the present invention in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：Long message data is packetized into short report again according to after data compression algorithm compression
Civilian packet is transmitted, it is possible to reduce the total amount of data of transmission, strengthens the confidentiality of data transfer.
Refer to Fig. 1 to Fig. 7, a kind of Beidou data transmission, comprise the steps：
S1, the Big Dipper send terminal and according to data compression algorithm, long message data are compressed；
S2, by compression after long message data carry out subpackage process, obtain short message packet；
S3, sequentially send described short message packet.
Knowable to foregoing description, the beneficial effects of the present invention is：The Big Dipper sends terminal and first long message data is pressed
Contracting is processed, and is then packetized into short message packet again and is transmitted, it is possible to reduce the total amount of data of transmission, reduces Big Dipper data and passes
Defeated time delay, reduces the occupancy to big-dipper satellite channel for the data transfer；Simultaneously further through data compression, by original plaintext number
According to being converted into unreadable ciphertext, strengthen the confidentiality of Big Dipper data transfer.
Further, also include before step S3：
Add subpackage identifier, temporal information, total bag number and subpackage sequence number in described short message packet header position；
Require to carry out protocol encapsulation to short message packet according to Beidou communication protocol format.
Seen from the above description, add the information such as subpackage identifier and subpackage sequence number in short message packet header position,
Facilitate follow-up Big Dipper receiving terminal that short message packet is packaged etc. and process.
Further, also include：Big Dipper receiving terminal order receives short message packet, according to Beidou communication agreement to it
Decapsulated.
Further, also include after described decapsulation：Judge whether short message packet is complete and correct, if so, then enters
Row data set bag, restores former compression long message data, if it is not, then abandoning.
Further, the described data set bag that carries out specifically includes：
Short message packet after S11, reading decapsulation；
S12, short message packet is carried out with classified finishing, and according to subpackage sequence number, the short message packet after sorting out is filled out
It is charged to the compression corresponding position of long message data；
S13, judge whether the compression long message data corresponding to short message packet all receives, if so, then defeated
Go out former compression long message data, if it is not, then return to step S11.
Further, also include：Big Dipper receiving terminal solves to former compression long message data according to data compression algorithm
Pressure, obtains original long message data.
Seen from the above description, Big Dipper receiving terminal all connects in the corresponding short message packet of one long message data of judgement
Harvest whole and correct after, further according to sending terminal with the Big Dipper and arranging compression algorithm, the long message data of compression is solved
Pressure.
A kind of Big Dipper data transmission system, including：The Big Dipper sends terminal, for compressing long message data, after compression
Long message data carries out subpackage process and obtains short message packet, and is used for sending described short message packet.
Further, also include：
Satellite relay station, sends the short message packet of terminal, and is sent to Big Dipper receiving terminal for receiving the Big Dipper；
Big Dipper receiving terminal, for receiving short message packet.
Further, the described Big Dipper sends terminal and includes：
Receiver module, for receiving long message data；
Judge module, for reviewing and validate integrity and the correctness of received long message data；
Compression module, for being compressed to satisfactory long message data according to compression algorithm；
Subpackage mould is fast, for carrying out segmentation group bag to the long message data after compression；
Protocol encapsulation module, for carrying out protocol encapsulation according to Big Dipper Data Transport Protocol to short message packet；
Sending module, for sending packaged short message packet.
Further, described Big Dipper receiving terminal includes：
Receiver module, for receiving the short message packet that satellite relay station sends；
Agreement unseals module, for parsing short message packet according to Big Dipper Data Transport Protocol；
Judge module, for reviewing and validate integrity and the correctness of short message packet；
Group bag module, for carrying out sorting out to short message packet, arranging, merge, restores former compression long message data；
Decompression module, for decompressing to compression long message packet according to compression algorithm, parses original long report
Civilian data；
Output module, for exporting original long message data.
Embodiment one
Refer to Fig. 1 to Fig. 4, embodiments of the invention one are：A kind of Beidou data transmission, including following content：
As shown in figure 1, the Big Dipper sends terminal after receiving long message data, first determine whether whether long message data is complete
Whole and correct, if it is not, then abandoning the long message data receiving, if so, then according to the compression arranged with Big Dipper receiving terminal
Algorithm, described long message data is compressed, for example, can use Huffman Compress Algorithm.According to Big Dipper short message after compression
The byte number sending limits and requires, and carries out segmentation to the long message data after compression by the length of 71 bytes, obtains a series of
Short message packet.As shown in Fig. 2 in the present embodiment, first counting total bytes X, then calculate long message data sectional
Total bag number N afterwards, computing formula is：N=(X+70)/71, N takes the integer part of value of calculation, last short message packet
Length can be less than 71 bytes, i.e. last data subpackage can be discontented with 71 bytes, and the subpackage sequence number of data is from 0 to N-1.
For the ease of the parsing of Big Dipper receiving terminal, combine described short message packet, add in each short message packet header and divide
The identification informations such as PID Packet Identifier, temporal information, total bag number, subpackage sequence number, subpackage identifier can take character " c1 " etc.；Time
Information is that the Big Dipper sends the time that terminal sends message, takes current system time.So often send a short message information
The data content comprising has：Subpackage identifier, temporal information, total bag number, subpackage sequence number and short message packet.Before transmission also
Each short message information is packaged according to Big Dipper Data Transport Protocol, the content of protocol encapsulation mainly includes：User
ID, recipient ID, text length and telegraph text content, described ID is Big Dipper receiving terminal identifier, and described recipient ID is
The Big Dipper sends terminal recognition number.Protocol encapsulation well after, sequentially send described short message information.
As shown in Figure 3 and Figure 4, after Big Dipper receiving terminal is received sequentially short message information by big-dipper satellite link,
Further according to Beidou communication agreement, each bar short message information is decapsulated, extract short message packet therein and other
Information, judges whether the data of short message packet is complete and correct, if it is not, then abandoning；If so, data set bag, root are then carried out
Send the identification letter such as terminal recognition number, subpackage identifier, temporal information, total bag number, subpackage sequence number according to the Big Dipper in message data
Breath, carries out sorting out, arranges to each short message packet, and according to total bag number, and this compression long message is received at present
Short message packet sum, it is known that whole numbers of current whether received this compression long message complete of Big Dipper receiving terminal
According to.If so, the long message data that then can restore former compression and its Big Dipper that is derived from send terminal recognition number, thus realize right
The group packet function of former compression long message data；The last data compression algorithm further according to aforementioned agreement, long to the compression being reduced
Message data is decompressed, thus parsing original long message data.
Embodiment two
Refer to Fig. 5 to Fig. 7, embodiments of the invention two are corresponding with the method for embodiment one, as shown in figure 5, being one
Plant Big Dipper data transmission system, send terminal, satellite relay station and Big Dipper receiving terminal including the Big Dipper.
The described Big Dipper sends terminal and is used for receiving long message data, compresses long message data, to the long message number after compression
Obtain short message packet according to carrying out subpackage process, and be used for sending described short message packet.Take in every short message information
Send terminal recognition number, send time, subpackage identifier, subpackage sequence number, total bag number and the identification of Big Dipper receiving terminal with the Big Dipper
Number etc. information.As shown in fig. 6, the Big Dipper sends terminal by receiver module, judge module, compression module, subpackage module, protocol encapsulation
Module and six module compositions of sending module, wherein, receiver module is used for the long message data in receiving data source；Judge module is used
In the integrity reviewing and validate received long message data and correctness；The compression that compression module is used for according to agreement is calculated
Method, such as Huffman algorithm, are compressed to satisfactory long message data, to reduce the data volume of satellite transmission and real
The encryption of existing message data；Subpackage module is used for limiting requirement according to the byte number that Big Dipper short message sends, to the length after compression
Message data carries out segmentation group bag by the length of 71 bytes；Protocol encapsulation module is used for the data of segmentation group bag as short message
Packet, and protocol encapsulation is carried out according to Big Dipper Data Transport Protocol, form the Big Dipper short message information of series of standards；Send
Module is used for putting into the Big Dipper short breath of notifying packaged for this series in transmit queue, and is sent by big-dipper satellite link order
Go out.
Satellite relay station is used for receiving the Big Dipper short message information sent by each Big Dipper transmission terminal；Short further according to the Big Dipper
The Big Dipper receiving terminal identifier carrying in message information, Big Dipper short message is forwarded to corresponding Big Dipper receiving terminal.
Big Dipper receiving terminal is used for sequentially receiving a series of Big Dipper short message information of the translations sent by satellite relay station,
The information such as terminal recognition number, transmission time are sent according to the Big Dipper carrying in Big Dipper short message information, identifies these short messages
The Big Dipper being derived from sends terminal recognition number, by these short message packets are further sorted out, arranged, merging,
Parsing, finally restores original long message data, and the Big Dipper being derived from sends the related letter such as terminal recognition number, transmission time
Breath.As shown in fig. 7, Big Dipper receiving terminal is by receiver module, multi-protocol decapsulation module, judge module, group bag module, decompression mould
Block, six module compositions of output module, wherein, receiver module is used for receiving the Big Dipper short message letter that satellite relay station's forwarding comes
Breath；Multi-protocol decapsulation module is used for according to Big Dipper Data Transport Protocol, and parsing from Big Dipper short message information carrys out telegraph text data, that is,
Parse the short message packet of compression long message；Judge module is used for reviewing and validate the complete of received short message packet
Whole property and correctness；Group bag module is used for sending terminal recognition number, subpackage identifier, time letter according to the Big Dipper in telegraph text data
Breath, the identification information such as total bag number, subpackage sequence number, carry out sorting out to the packetized data parsing, arrange, merge, and restore complete
Former compression long message data, and its Big Dipper that is derived from sends terminal recognition number；Decompression module is used for the compression according to agreement
Algorithm, such as Huffman algorithm, decompress to the compression long message data being reduced, parse original long message number
According to；Output module is used for the original long message data that output is parsed, and exports the Big Dipper transmission terminal recognition number being derived from, message
The relevant informations such as transmission time.
In sum, the present invention provides a kind of Beidou data transmission and system, the Big Dipper sends terminal first by long report
Civilian data is packetized into short message packet again according to after data compression algorithm compression, is then sequentially transmitted, it is possible to reduce pass
Defeated total amount of data, reduces the time delay of Big Dipper data transfer, reduces the occupancy to big-dipper satellite channel for the data transfer；Again simultaneously
By data compression, original clear data is converted into unreadable ciphertext, strengthens the confidentiality of Big Dipper data transfer.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
The equivalents that bright description and accompanying drawing content are made, or directly or indirectly it is used in the technical field of correlation, all include in the same manner
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of Beidou data transmission is it is characterised in that comprise the steps：
S1, the Big Dipper send terminal and according to data compression algorithm, long message data are compressed；
S2, by compression after long message data carry out subpackage process, obtain short message packet；
S3, sequentially send described short message packet.
2. Beidou data transmission according to claim 1 is it is characterised in that also include before step S3：
Add subpackage identifier, temporal information, total bag number and subpackage sequence number in described short message packet header position；
Require to carry out protocol encapsulation to short message packet according to Beidou communication protocol format.
3. Beidou data transmission according to claim 2 is it is characterised in that also include：Big Dipper receiving terminal order
Receive short message packet, according to Beidou communication agreement, it is decapsulated.
4. Beidou data transmission according to claim 3 is it is characterised in that also include after described decapsulation：Judge
Whether short message packet is complete and correct, if so, then carries out data set bag, restores former compression long message data, if it is not, then
Abandon.
5. Beidou data transmission according to claim 4 is it is characterised in that the described data set bag that carries out specifically wraps
Include：
Short message packet after S11, reading decapsulation；
S12, short message packet is carried out with classified finishing, and according to subpackage sequence number, the short message packet after sorting out is filled into
The compression corresponding position of long message data；
S13, judge whether the compression long message data corresponding to short message packet all receives, if so, then export former
Compression long message data, if it is not, then return to step S11.
6. Beidou data transmission according to claim 5 is it is characterised in that also include：Big Dipper receiving terminal according to
Data compression algorithm decompresses to former compression long message data, obtains original long message data.
7. a kind of Big Dipper data transmission system is it is characterised in that include：The Big Dipper sends terminal, for compressing long message data, right
Long message data after compression carries out subpackage process and obtains short message packet, and is used for sending described short message packet.
8. Big Dipper data transmission system according to claim 7 is it is characterised in that also include：
Satellite relay station, sends the short message packet of terminal, and is sent to Big Dipper receiving terminal for receiving the Big Dipper；
Big Dipper receiving terminal, for receiving short message packet.
9. the Big Dipper data transmission system according to claim 7 or 8 is it is characterised in that described Big Dipper transmission terminal includes：
Receiver module, for receiving long message data；
Judge module, for reviewing and validate integrity and the correctness of received long message data；
Compression module, for being compressed to satisfactory long message data according to compression algorithm；
Subpackage mould is fast, for carrying out segmentation group bag to the long message data after compression；
Protocol encapsulation module, for carrying out protocol encapsulation according to Big Dipper Data Transport Protocol to short message packet；
Sending module, for sending packaged short message packet.
10. Big Dipper data transmission system according to claim 8 is it is characterised in that described Big Dipper receiving terminal includes：
Receiver module, for receiving the short message packet that satellite relay station sends；
Agreement unseals module, for parsing short message packet according to Big Dipper Data Transport Protocol；
Judge module, for reviewing and validate integrity and the correctness of short message packet；
Group bag module, for carrying out sorting out to short message packet, arranging, merge, restores former compression long message data；
Decompression module, for decompressing to compression long message packet according to compression algorithm, parses original long message number
According to；
Output module, for exporting original long message data.
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Cited By (11)
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| CN107561564A (en) * | 2017-09-08 | 2018-01-09 | 广州祺智通信科技股份有限公司 | A kind of compression implementation method of big-dipper satellite information transfer |
| CN109803237A (en) * | 2019-01-24 | 2019-05-24 | 云南云金地科技有限公司 | A kind of geographical spatial data transmission method based on Big Dipper short message |
| 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 |
| CN110650192A (en) * | 2019-09-20 | 2020-01-03 | 北京博望华科科技有限公司 | New energy monitoring system based on Beidou short message communication |
| CN111193538A (en) * | 2019-12-31 | 2020-05-22 | 西安中科天塔科技股份有限公司 | Communication method, device and system |
| CN111224895A (en) * | 2019-12-27 | 2020-06-02 | 全球能源互联网研究院有限公司 | Time-sensitive message transmission method, device and equipment in HSR network |
| CN111615072A (en) * | 2020-06-04 | 2020-09-01 | 中国人民解放军95871部队 | Beidou technology data transmission method, meteorological data transmission method and system |
| CN111741005A (en) * | 2020-06-30 | 2020-10-02 | 天津大学 | Beidou data transmission system based on ocean buoy and data packet header compression method |
| CN112636808A (en) * | 2020-11-17 | 2021-04-09 | 中国科学院紫金山天文台 | Telescope remote data transmission and control method based on Beidou short message |
| CN117560428A (en) * | 2023-04-24 | 2024-02-13 | 交通运输部北海航海保障中心天津航标处 | AIS base station message transmission processing method based on Beidou three-channel |
| CN117931381A (en) * | 2024-03-25 | 2024-04-26 | 成都菁蓉联创科技有限公司 | End-to-end communication method based on ivshmem technology |
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| CN107561564B (en) * | 2017-09-08 | 2019-08-06 | 广州祺智通信科技股份有限公司 | A kind of compression implementation method of big-dipper satellite information transmission |
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| CN109803237A (en) * | 2019-01-24 | 2019-05-24 | 云南云金地科技有限公司 | A kind of geographical spatial data transmission method based on Big Dipper short message |
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| 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 |
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| CN111224895A (en) * | 2019-12-27 | 2020-06-02 | 全球能源互联网研究院有限公司 | Time-sensitive message transmission method, device and equipment in HSR network |
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| CN111193538B (en) * | 2019-12-31 | 2022-09-13 | 西安中科天塔科技股份有限公司 | Communication method, device and system |
| CN111193538A (en) * | 2019-12-31 | 2020-05-22 | 西安中科天塔科技股份有限公司 | Communication method, device and system |
| CN111615072A (en) * | 2020-06-04 | 2020-09-01 | 中国人民解放军95871部队 | Beidou technology data transmission method, meteorological data transmission method and system |
| CN111615072B (en) * | 2020-06-04 | 2022-03-01 | 中国人民解放军95871部队 | Beidou technology data transmission method, meteorological data transmission method and system |
| CN111741005A (en) * | 2020-06-30 | 2020-10-02 | 天津大学 | Beidou data transmission system based on ocean buoy and data packet header compression method |
| CN112636808B (en) * | 2020-11-17 | 2022-08-05 | 中国科学院紫金山天文台 | Telescope remote data transmission and control method based on Beidou short message |
| CN112636808A (en) * | 2020-11-17 | 2021-04-09 | 中国科学院紫金山天文台 | Telescope remote data transmission and control method based on Beidou short message |
| CN117560428A (en) * | 2023-04-24 | 2024-02-13 | 交通运输部北海航海保障中心天津航标处 | AIS base station message transmission processing method based on Beidou three-channel |
| CN117560428B (en) * | 2023-04-24 | 2024-04-16 | 交通运输部北海航海保障中心天津航标处 | AIS base station message transmission processing method based on Beidou three-channel |
| CN117931381A (en) * | 2024-03-25 | 2024-04-26 | 成都菁蓉联创科技有限公司 | End-to-end communication method based on ivshmem technology |
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Application publication date: 20170222 |