CN116455450A - High-flux satellite communication data receiving and transmitting device - Google Patents
High-flux satellite communication data receiving and transmitting device Download PDFInfo
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- CN116455450A CN116455450A CN202310365634.6A CN202310365634A CN116455450A CN 116455450 A CN116455450 A CN 116455450A CN 202310365634 A CN202310365634 A CN 202310365634A CN 116455450 A CN116455450 A CN 116455450A
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- 238000004891 communication Methods 0.000 title claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 230000011218 segmentation Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 6
- 230000001052 transient effect Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- IHNKQIMGVNPMTC-RUZDIDTESA-N 1-stearoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)COP([O-])(=O)OCC[N+](C)(C)C IHNKQIMGVNPMTC-RUZDIDTESA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000013524 data verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- 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
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- 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
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18582—Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
-
- 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
- H04L63/0464—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 using hop-by-hop encryption, i.e. wherein an intermediate entity decrypts the information and re-encrypts it before forwarding it
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- 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
- H04L69/08—Protocols for interworking; Protocol conversion
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- 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
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/165—Combined use of TCP and UDP protocols; selection criteria therefor
-
- 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
- H04L69/26—Special purpose or proprietary protocols or architectures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Computing Systems (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to the field of satellite communication devices and discloses a high-flux satellite communication data receiving and transmitting device, which comprises a data receiving module, a data transmitting module and a data receiving module, wherein the data receiving module is connected with a satellite side device set and is used for receiving data transmitted from the satellite side device set; the data transmission module is connected with the ground side equipment set and used for transmitting data to the ground side equipment set; the data segmentation module is connected with the data receiving module and used for segmenting the received satellite data; the data encryption module is connected with the data segmentation module and used for encrypting the segmented data; the data conversion module is connected with the data encryption module and the data transmission module, and is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the ground side equipment set by the data transmission module; the invention can encrypt and protect satellite communication data, and improves the reliability and stability of data transmission.
Description
Technical Field
The invention relates to the technical field of satellite communication devices, in particular to a high-flux satellite communication data receiving and transmitting device.
Background
With the increasing demands of high-rate data transmission and broadband information broadcasting services, the demands of diversified services such as high throughput demands, and the like, high-throughput satellites have been widely used in broadcasting, rescue, military and other scenes because of their advantages such as multi-spot beam, available bandwidth, frequency multiplexing, high single-spot beam gain, and communication capacity ten to hundred times higher than that of conventional communication satellites. However, the security problem of high-throughput satellite communications is increasingly pronounced due to the wide-area coverage and broadcast characteristics of high-throughput satellite communications, which make their transmitted signals highly vulnerable to interception by an unauthorized user. The secure transmission of the high-flux satellite communication system is realized mainly by an encryption technology at the upper layer of transmission, but with the development of computer technology, particularly the appearance of quantum computing technology, the traditional encryption technology based on computational complexity faces serious challenges.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-flux satellite communication data receiving and transmitting device.
The technical aim of the invention is realized by the following technical scheme: a high throughput satellite communication data receiving and transmitting apparatus comprising:
the data receiving module is connected with the satellite side equipment set and is used for receiving data transmitted by the satellite side equipment set;
the data transmission module is connected with the ground side equipment set and used for transmitting data to the ground side equipment set;
the data segmentation module is connected with the data receiving module and used for segmenting the received satellite data;
the data encryption module is connected with the data segmentation module and used for encrypting the segmented data;
the data conversion module is connected with the data encryption module and the data transmission module, and is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the ground side equipment set by the data transmission module;
the first communication interface module is used for realizing communication between the data receiving module and the satellite side equipment set;
and the second communication interface module is used for realizing the communication between the data transmission module and the ground side equipment set.
Preferably, the satellite side device set includes a satellite internet of things device, a ground station and a gateway device.
Preferably, the data receiving module transmits data with the satellite side device set based on the NBQTT protocol.
Preferably, the data sending module sends data to the ground side device set based on an MQTT protocol, and the ground side device set further comprises a wired network internet of things terminal connected with the mobile network internet of things terminal.
Preferably, the first communication interface module includes 232 interface chips, 2 pull-up resistors, 2 current limiting resistors, 2 bidirectional transient diodes, and 5 capacitors.
Preferably, the second communication interface module includes 232 interface chips, 4 pull-up resistors, 4 current limiting resistors, 4 bidirectional transient diodes, and 5 capacitors.
Preferably, the data encryption module performs synchronization processing on the divided physical layer data frame by using a synchronization UW carried in a frame header, performs inverse mapping by using an ACC in the physical layer data frame header, and includes a modulation mode and an LSPC coding rate of the physical layer data frame.
As a preferred option: the data encryption module further comprises a physical layer data frame processing unit, and is used for carrying out mapping processing on the obtained physical layer data frame, and transmitting the physical layer data frame downstream after adding the synchronous head UW into the frame head.
Compared with the prior art, the scheme of the invention has the following beneficial effects:
in order to ensure reliable arrival confirmation, data verification and other control information, the invention needs to optimize the MQTT protocol, reduce the transmission of the control information, change the TCP protocol used by the MQTT into the UDP protocol, further reduce the control information during data transmission, enhance the signal intensity received by legal users, reduce the signal intensity received by eavesdroppers, and be applied to improving the safety of a high-throughput satellite communication system.
Detailed Description
The invention is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.
Example 1
The high-flux satellite communication data receiving and transmitting device comprises a data receiving module, wherein the data receiving module is connected with the satellite side equipment set and is used for receiving data transmitted from the satellite side equipment set; the data transmission module is connected with the ground side equipment set and used for transmitting data to the ground side equipment set; the data segmentation module is connected with the data receiving module and used for segmenting the received satellite data; the data encryption module is connected with the data segmentation module and used for encrypting the segmented data; the data conversion module is connected with the data encryption module and the data transmission module, and is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the ground side equipment set by the data transmission module; the first communication interface module is used for realizing communication between the data receiving module and the satellite side equipment set; and the second communication interface module is used for realizing the communication between the data transmission module and the ground side equipment set.
Further, the satellite side device set comprises satellite internet of things equipment, a ground station and gateway equipment, the data receiving module transmits data with the satellite side device set based on an NBQTT protocol, the data transmitting module transmits data to the ground side device set based on an MQTT protocol, and the ground side device set further comprises a wired network internet of things terminal connected with the mobile network internet of things terminal.
Still further, the first communication interface module includes 232 interface chip, 2 pull-up resistors, 2 current limiting resistors, 2 bidirectional transient diodes and 5 capacitors, and the second communication interface module includes 232 interface chip, 4 pull-up resistors, 4 current limiting resistors, 4 bidirectional transient diodes and 5 capacitors.
In this embodiment, the MQTT protocol cannot guarantee real-time performance in the current satellite application, because it adopts a publish/subscribe mechanism, where the publish/subscribe mechanism refers to a message paradigm in a software architecture, and a sender of a message (called a publisher) does not send the message directly to a specific receiver (called a subscriber), but classifies the published message into different categories, and does not need to know which subscribers (if any) may exist, and as such, subscribers may express interests in one or more categories, receive only the interested message, and does not need to know which publishers (if any) exist, and the publish/subscribe is similar to the message queue paradigm, which is usually a part of a larger message-oriented middleware system, and most message systems support both the message queue model and the publish/subscribe model in an API, because the TCP protocol adopted by the MQTT protocol itself may transmit many control information, including control information related to three handshaking, such as connection-oriented acknowledgement, data verification, and other control information to ensure reliability. Because the data link is not very stable in satellite communication, the TCP protocol for connection is often interrupted in actual use, and the occupation of bandwidth is also aggravated by frequent reestablishment of connection, in order to solve the problems, the invention needs to optimize the MQTT protocol, reduce the transmission of control information, change the TCP protocol used by the MQTT into the UDP protocol, and further reduce the control information during data transmission when the satellite is applied to the scene of the Internet of things with higher real-time requirements.
Example 2
The data encryption module is used for carrying out synchronous processing on the divided physical layer data frames by utilizing a synchronous UW carried in a frame header, carrying out inverse mapping by utilizing ACC in the physical layer data frame header, wherein the ACC comprises a modulation mode and an LSPC coding code rate of the physical layer data frames, and further comprises a physical layer data frame processing unit used for carrying out mapping processing on the obtained physical layer data frames and transmitting the physical layer data frames downstream after the synchronous UW is added in the frame header.
The physical layer data transmission method in satellite data communication adopts LDPC codes as error correction coding algorithms, flexibly sets the data frame length according to different application scenes and application requirements, sets MAC frame control data and partial communication payload data in one error correction code (namely LDPC code word), adds other residual communication payload data in one or more LDPC code words, and uses the same coder and decoder for coding and decoding each formed code word; meanwhile, in the method, an ACC field is adopted to determine the working mode of the current transmission system, a synchronization header UW (Uniqueword) with 32-bit length is used to be attached to the head of each physical layer data frame, the synchronization function of transmission signals is completed, and the physical layer data frames obtained by framing are output to the downstream.
Example 3
The high-flux satellite communication data receiving and transmitting device comprises a data segmentation module, a data segmentation module and a data transmission module, wherein the data segmentation module adopts a time segmentation based method to segment data, and the data is divided into a training set, a verification set and a test set according to time maintenance, so that the data is segmented.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and those skilled in the art can make modifications to the present embodiment which do not creatively contribute to the present invention as required after reading the present specification, but are protected by patent laws within the scope of claims of the present invention.
Claims (8)
1. A high throughput satellite communication data receiving and transmitting apparatus comprising:
the data receiving module is connected with the satellite side equipment set and is used for receiving data transmitted by the satellite side equipment set;
the data transmission module is connected with the ground side equipment set and used for transmitting data to the ground side equipment set;
the data segmentation module is connected with the data receiving module and used for segmenting the received satellite data;
the data encryption module is connected with the data segmentation module and used for encrypting the segmented data;
the data conversion module is connected with the data encryption module and the data transmission module, and is used for converting the data of the NBQTT protocol into the data of the MQTT protocol and transmitting the data to the ground side equipment set by the data transmission module;
the first communication interface module is used for realizing communication between the data receiving module and the satellite side equipment set;
and the second communication interface module is used for realizing the communication between the data transmission module and the ground side equipment set.
2. The high-throughput satellite communication data receiving and transmitting apparatus of claim 1, wherein: the satellite side equipment set comprises satellite Internet of things equipment, a ground station and gateway equipment.
3. The high-throughput satellite communication data receiving and transmitting apparatus of claim 2, wherein: the data receiving module transmits data with the satellite side equipment set based on NBQTT protocol.
4. A high throughput satellite communication data receiving and transmitting apparatus according to claim 3, wherein: the data sending module sends data to the ground side equipment set based on the MQTT protocol, and the ground side equipment set further comprises a wired network Internet of things terminal connected with the mobile network Internet of things terminal.
5. The high-throughput satellite communication data receiving and transmitting apparatus of claim 4, wherein: the first communication interface module comprises a 232 interface chip, 2 pull-up resistors, 2 current limiting resistors, 2 bidirectional transient diodes and 5 capacitors.
6. The high-throughput satellite communication data receiving and transmitting apparatus of claim 5, wherein: the second communication interface module comprises a 232 interface chip, 4 pull-up resistors, 4 current limiting resistors, 4 bidirectional transient diodes and 5 capacitors.
7. The high-throughput satellite communication data receiving and transmitting apparatus of claim 6, wherein: the data encryption module performs synchronization processing on the divided physical layer data frames by utilizing the synchronization UW carried in the frame header, performs inverse mapping by utilizing ACC in the physical layer data frame header, and comprises a modulation mode and an LSPC coding code rate of the physical layer data frames.
8. The high-throughput satellite communication data receiving and transmitting apparatus of claim 7, wherein: the data encryption module further comprises a physical layer data frame processing unit, and is used for carrying out mapping processing on the obtained physical layer data frame, and transmitting the physical layer data frame downstream after adding the synchronous head UW into the frame head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310365634.6A CN116455450A (en) | 2023-04-07 | 2023-04-07 | High-flux satellite communication data receiving and transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310365634.6A CN116455450A (en) | 2023-04-07 | 2023-04-07 | High-flux satellite communication data receiving and transmitting device |
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| Publication Number | Publication Date |
|---|---|
| CN116455450A true CN116455450A (en) | 2023-07-18 |
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| CN202310365634.6A Pending CN116455450A (en) | 2023-04-07 | 2023-04-07 | High-flux satellite communication data receiving and transmitting device |
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| CN (1) | CN116455450A (en) |
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- 2023-04-07 CN CN202310365634.6A patent/CN116455450A/en active Pending
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