CN111224711A - Communication terminal system of multi-mode internet of things satellite and network management method thereof - Google Patents
Communication terminal system of multi-mode internet of things satellite and network management method thereof Download PDFInfo
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- CN111224711A CN111224711A CN202010044186.6A CN202010044186A CN111224711A CN 111224711 A CN111224711 A CN 111224711A CN 202010044186 A CN202010044186 A CN 202010044186A CN 111224711 A CN111224711 A CN 111224711A
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
- H04B7/18543—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for adaptation of transmission parameters, e.g. power control
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18545—Arrangements for managing station mobility, i.e. for station registration or localisation
- H04B7/18547—Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station
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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
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18558—Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
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Abstract
The invention discloses a communication terminal system of a multimode Internet of things satellite and a management method thereof, wherein the system comprises a satellite baseband unit array, a radio frequency unit, a baseband switch switching unit, an intermediate frequency switch switching unit, a main control unit, a radio frequency interface, a network switching management unit, a 166 unit, a sensor unit and a data storage unit; the satellite baseband unit array is used for realizing the transmission and the reception of data in different satellite networks; the radio frequency unit is used for being compatible with a plurality of working frequency bands simultaneously. The invention can cover the world: the user can select a satellite operation service combination according to the movement route and the working area of the monitored moving object, so that the service coverage of the whole monitoring process is realized; the configuration is flexible: through hot plug, modularization, standard structural installation and interface connection mode, the user can be according to the route change of monitoring removal carrier, network merchant service price change, nimble installation, change satellite communication module and network use strategy.
Description
Technical Field
The invention relates to the technical field of satellite networks, in particular to a communication terminal system of a multi-mode internet of things satellite and a network management method thereof.
Background
In recent years, with the development of mobile internet, internet of things and sensor technologies, business informatization systems are being deployed and upgraded at an accelerated speed in various industries, and respective fine management capabilities are improved, so that the requirements for real-time online tracking and state monitoring of various mobile asset equipment, imported and exported goods and raw materials in the global range are increasing day by day, and a satellite internet of things communication terminal system with bidirectional communication capability based on a satellite link is favored by systems, equipment integrators and terminal users.
The satellite network is the only network communication means which can provide global coverage at present, and can solve the problem of network communication in oceans, remote areas and two polar regions. With the development of small satellite technology and commercial aerospace, the manufacturing and transmitting cost of the satellite is lower, the requirements on the bandwidth and the real-time performance of a link of a satellite network are not high due to the characteristics of the internet of things service, and the transmitting, networking and operating thresholds are low, so that more and more initial satellite operating enterprises begin to involve in the internet of things satellite constellation operation service besides the traditional old-fashioned satellite operator continues to expand the service of the internet of things service.
Based on the matching consideration of system cost, terminal size and required link energy requirements, the frequency bands for the internet of things satellite are usually concentrated on VHF, UHF and L frequency bands, available frequency resources are very limited, and various countries can make restriction and even prohibited supervision and restriction on different satellite constellations based on a national radio management and telecommunication management method, a series of non-technical factors such as commerce, frequency band protection and information safety. For most satellite constellations, it is difficult to obtain operational qualifications in all countries and regions around the world. Thus, for regulatory reasons, not all satellite constellations can provide globally undifferentiated network services.
The signal frequency, the data transmission system, the coding and decoding modes and the interface protocols of the satellite constellation of the internet of things of different operators are different, and the current industry also lacks a uniform access standard, so that the conventional data transceiver module of the internet of things cannot realize roaming communication among different operators, the network service can have service interruption in certain regions, and the global uninterrupted tracking and monitoring service cannot be realized.
Disclosure of Invention
In order to solve the problems in the related art, embodiments of the present invention provide a communication terminal system of a multimode internet of things satellite and a network management method thereof, which solve the problem of service interruption caused by different access standards of different operators.
The embodiment of the invention provides a communication terminal system of a multimode Internet of things satellite, which comprises a satellite baseband unit array, a radio frequency unit, a baseband switch switching unit, an intermediate frequency switch switching unit, a main control unit, a radio frequency interface, a network switching management unit, a GNSS unit, a sensor unit and a data storage unit, wherein the satellite baseband unit array is used for receiving a satellite signal;
the satellite baseband unit array is used for realizing the transmission and the reception of data in different satellite networks;
the radio frequency unit is used for simultaneously being compatible with a plurality of working frequency bands;
the baseband switch switching unit is used for connecting a data exchange path between the received and transmitted data and the corresponding satellite baseband unit;
the intermediate frequency switch switching unit is used for connecting a signal transmission channel of the satellite baseband unit and the radio frequency unit;
the main control unit is used for automatically identifying, registering and managing network parameters of the satellite baseband unit array module;
the radio frequency interface is used for being compatible with at least two radio frequency link frequency bands of operators;
the network switching management unit is used for realizing the algorithm for managing satellite network service parameters, managing network switching strategy weight factors and realizing network switching strategies;
the GNSS unit is used for acquiring the current geographic position and time;
the sensor unit is used for acquiring the state of a monitored object;
the data storage unit is used for storing the data acquired by the sensing unit, the satellite network service parameters and the communication terminal service log information.
Furthermore, the main control unit also comprises parameters configuration issuing of a baseband switch/intermediate frequency switch/radio frequency unit, activation and dormancy control of a satellite baseband module, GNSS position positioning/time service data reading, and control and reading of a sensing module and a data storage module.
Furthermore, the radio frequency unit also comprises a dynamic adjustable unit, and the parameter configuration of the radio frequency link is completed by the main control unit according to different modules.
Further, the state of the monitoring object includes, but is not limited to, various service state collection data of temperature, humidity and pressure.
Furthermore, the network switching management unit also realizes the dynamic selection of the network through a network switching strategy, and feeds back the final selection result to the main control unit to realize the dynamic switching of the satellite network.
A network management method of a multimode Internet of things satellite communication terminal system comprises the following steps,
installing a satellite baseband unit, and automatically initiating an online registration application to a main control unit by the satellite baseband unit;
the main control unit acquires current position information from the GNSS module and transmits the current position information to the network management unit, and the network management unit determines the optimal access network and transmits the corresponding baseband unit number and the link configuration parameters or configuration files to the main control unit;
after successfully acquiring the serial number of the satellite baseband module, the main control unit awakens the baseband module, the intermediate frequency switch, the radio frequency switch and the radio frequency module from a low-power-consumption sleep mode;
the main control unit transmits the system configuration parameters/configuration files, the frequency parameter configuration, the baseband switch switching unit configuration and the intermediate frequency switch configuration to the radio frequency module, the intermediate frequency switch and the radio frequency switch respectively to complete the link parameter and data channel configuration;
the main control unit transmits data to be transmitted to a selected satellite network baseband module for modulation through a data channel gated by the baseband switch switching unit, transmits a modulated intermediate frequency signal to a radio frequency module for frequency conversion and amplification through an intermediate frequency switching switch, and finally transmits the intermediate frequency signal through a radio frequency antenna to establish a communication link with a satellite;
the radio frequency antenna receives radio frequency signals transmitted by a satellite, and the radio frequency signals are transmitted to a selected satellite network baseband module for demodulation through the intermediate frequency switch after being subjected to frequency conversion processing by the radio frequency module;
receiving and transmitting data packets to complete a complete data transmission process;
after the data receiving and sending are finished, the main control unit sends a dormancy order to the baseband module, the intermediate frequency change-over switch, the radio frequency change-over switch and the radio frequency module, so that the modules enter a dormancy state to reduce the power consumption of the system.
Further, the main control unit may acquire link configuration and service area information of the communication module from the installed satellite baseband module, and feed back a registration success message.
Further, the network management unit determines the optimal access network of the current area by using a satellite service network policy algorithm.
Further, the data to be transmitted includes data of a sensor unit or data of a data storage unit.
Furthermore, satellite data received by the radio frequency unit is transmitted to the corresponding baseband unit through the intermediate frequency switch switching unit, and the satellite baseband unit demodulates signals.
Further, the demodulated data is transmitted to the main control unit through the baseband switch switching unit, and the main control unit performs subsequent processing on the data packet.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
1. can cover the world: the user can select the satellite operation service combination according to the movement route and the working area of the monitored moving object, and the service coverage of the whole monitoring process is realized.
2. The configuration is flexible: through hot plug, modularization, standard structural installation and interface connection mode, the user can be according to the route change of monitoring removal carrier, network merchant service price change, nimble installation, change satellite communication module and network use strategy.
3. The decision cost of the user is reduced: the traditional terminal is usually bound with a satellite operation service provider, and from the perspective of a user, terminal equipment with huge number is usually required to be purchased, installed and operated, if the operator is replaced in the later period, all terminals are required to be detached, and the terminal equipment is purchased and installed again, and a system platform is required to be modified, so that the decision pressure and cost of the user are high.
4. The cost-to-efficiency ratio of the network service is improved: the link quality, the flow price and the timeliness of different internet of things constellations are different, and when a plurality of networks are available at the same time, the network selection strategy algorithm used in the patent selects the optimal service network by comprehensively analyzing the price elements, the link quality elements and the timeliness elements, so that the overall cost-effectiveness ratio of network services is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a communication terminal system of a multimode internet of things satellite according to an embodiment of the present invention.
Fig. 2 is a flowchart of a network management method of a multimode internet of things satellite communication terminal system according to an embodiment of the present invention.
Fig. 3 is a partial flowchart of a network handover procedure of a multimode internet of things satellite communication terminal according to a second embodiment of the present invention.
Fig. 4 is a partial flowchart of a network handover procedure of a multimode internet of things satellite communication terminal according to a second embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus, and associated applications, methods consistent with certain aspects of the invention, as detailed in the following claims.
Example one
Fig. 1 is a schematic structural diagram of a communication terminal system of a multimode internet of things satellite according to an embodiment of the present invention, and the communication terminal system of the multimode internet of things satellite includes, as shown in fig. 1, a satellite baseband unit array 1, a radio frequency unit 2, a baseband switch switching unit 3, an intermediate frequency switch switching unit 4, a main control unit 5, a radio frequency interface 6, a network switching management unit 7, a GNSS unit 8, a sensor unit 9, and a data storage unit 10.
The satellite baseband unit array is used for modulating and demodulating data, one of core units of the communication terminal comprises a plurality of satellite operator baseband modules, a terminal mainboard adopts a modularized and hot-pluggable design, and is compatible with a plurality of satellite internet of things operators through a standardized software and hardware interface design, and the modules are automatically registered and identified after being installed.
The radio frequency unit is used for being compatible with at least two radio frequency bands for the terminal module of an operator to work, the frequencies used by different satellite constellations are different, the radio frequency unit comprises UHF, VHF and L, the radio frequency receiving and transmitting unit is compatible with a plurality of working frequency bands simultaneously, the radio frequency receiving and transmitting unit is dynamically adjustable, and the parameter configuration of a radio frequency link is completed by the main control unit according to different modules.
The base band switch switching unit is used for connecting a data exchange path between the received and transmitted data and the corresponding satellite base band unit, and the main control unit controls the base band switch switching unit after the network switching management unit makes network selection.
The intermediate frequency switch switching unit is used for connecting a signal transmission channel between the satellite baseband unit and the radio frequency unit, and the main control unit controls the intermediate frequency switch after the network switching management unit makes network selection.
The main control unit is used for automatic identification, registration and network parameter management of the satellite baseband unit array module, is a core control part of the communication terminal, and further comprises functions of baseband switch/intermediate frequency switch/radio frequency unit parameter configuration issuing, activation and dormancy control of the satellite baseband module, GNSS position positioning/time service data reading, control and reading of the sensing module and the data storage module and the like.
The radio frequency interface is used for being compatible with at least two terminal modules of operators, the frequencies used by different satellite constellations are different, including UHF, VHF and L, and the radio frequency interface needs to select a radio frequency link frequency band capable of covering all selected satellite operators.
The network switching management unit is used for managing network switching strategy weight factors, realizing algorithms of network switching strategies and managing satellite network service parameters, realizing dynamic selection of the network through the network switching strategies, and feeding back a final selection result to the main control unit to realize dynamic switching of the satellite network.
The GNSS unit is used for acquiring the current geographic position and time.
The sensor unit is used for acquiring the state of the monitored object, including but not limited to the state acquisition data of various services such as temperature, humidity, pressure and the like.
The data storage unit is used for storing the data acquired by the sensing unit, the satellite network service parameters and the communication terminal service log information.
The terminal system can carry two or more different data receiving and transmitting modules of the Internet of things satellite network according to the selection requirements of a user satellite network operator by utilizing hot plug, modularization, structural installation and a standard control and data interface connection mode, can flexibly replace, increase and reduce the number of the satellite receiving and transmitting modules, and can automatically complete the registration and logout operations of the network by identifying the hardware connection behavior of the modules on line.
The communication network management method is mainly based on the geographical position of a terminal, network matching is carried out according to the current position area and the service area of the registered available satellite network in the system, a plurality of matched available satellite networks pass through, the current available optimal satellite network is automatically judged through the satellite service and network selection strategy analysis algorithm arranged in the system, the selected network parameters are read from the system, channel switching and parameter configuration issuing of a radio frequency unit are completed, a data transmission link is opened, and network access and user data receiving and sending are completed.
Fig. 2 is a flowchart of a network management method of a multimode internet of things satellite communication terminal system according to an embodiment of the present invention, and as shown in fig. 2, the network management method of the multimode internet of things satellite communication terminal system includes the following steps,
The main control unit feeds back a registration success message by acquiring link configuration and service area information of the communication module.
And 102, the main control unit acquires current position information from the GNSS module, transmits the current position information to the network management unit, and sends the corresponding baseband unit number and the link configuration parameters or configuration files to the main control unit.
And 103, after successfully acquiring the serial number of the satellite baseband module, the main control unit awakens the baseband module, the intermediate frequency switch, the radio frequency switch and the radio frequency module from a low-power-consumption sleep mode.
And 104, the main control unit transmits the system configuration parameters/configuration files to the radio frequency module, the intermediate frequency switch and the radio frequency switch respectively according to the frequency parameter configuration, the baseband switch switching unit configuration and the intermediate frequency switch configuration, and completes the link parameter and data channel configuration.
And 105, the main control unit sends the data to be sent to a selected satellite network baseband module for modulation through a data channel gated by the baseband switch switching unit.
And sending the modulated intermediate frequency signal to a radio frequency module through an intermediate frequency switch for frequency conversion and amplification, and finally transmitting the signal by a radio frequency antenna to establish a communication link with a satellite.
The data to be transmitted includes data of the sensor unit or data of the data storage unit.
The network management unit determines the optimal access network of the current area by using a satellite service and network policy algorithm.
And 106, receiving a radio frequency signal transmitted by the satellite through the radio frequency antenna, performing frequency conversion processing through the radio frequency module, and transmitting the radio frequency signal to the selected satellite network baseband module for demodulation through the intermediate frequency switch.
And transmitting the demodulated data to the main control unit through the baseband switch switching unit, and carrying out subsequent processing on the data packet by the main control unit.
And step 107, repeating the step 106 and the step 107, and transmitting and receiving the data packet to complete a complete data transmission process.
And 108, after the data transceiving is finished, the main control unit sends a dormancy order to the baseband module, the intermediate frequency change-over switch, the radio frequency change-over switch and the radio frequency module to enable the modules to enter a dormant state so as to reduce the power consumption of the system.
Example two
Fig. 3 is a partial flowchart of a network switching process of a multimode internet of things satellite communication terminal in a second embodiment of the present invention, and fig. 4 is a partial flowchart of a network switching process of a multimode internet of things satellite communication terminal in a second embodiment of the present invention, and as shown in fig. 3 and fig. 4, the network switching process of the multimode internet of things satellite communication terminal includes the following steps:
And step 203, retrieving the available network list, and inquiring the available satellite service network of the current location area.
And step 204, if no available network exists currently, returning to the step 2, and waiting for the terminal to enter the coverage area of the available satellite network.
And step 205, if only 1 available network is inquired currently, entering step 7.
And step 206, if 2 or more than 2 available networks are inquired, selecting an algorithm model according to the satellite service network strategy, and analyzing and calculating the optimal access satellite service network.
And step 208, establishing a handshake link, and successfully accessing the network.
Step 209 starts transmission and reception of the packet.
And step 210, skipping to step 9 when the data packets still to be transmitted remain, and continuing to transmit the data packets.
And step 212, the satellite baseband unit, the change-over switch and the radio frequency unit enter a dormant state and wait for a wake-up signal when data is transmitted next time.
With the adoption of the embodiment of the invention, the whole world can be covered: the user can select a satellite operation service combination according to the movement route and the working area of the monitored moving object, so that the service coverage of the whole monitoring process is realized; the configuration is flexible: through hot plug, modularization and standard structural installation and interface connection modes, a user can flexibly install and replace the satellite communication module and a network use strategy according to the route change of the monitoring mobile carrier, the change of network business service price; the decision cost of the user is reduced: the traditional terminal usually needs to be bound with a satellite operation service provider, and from the perspective of a user, terminal equipment with huge number is usually required to be purchased, installed and operated, if the operator is replaced in the later period, all terminals need to be removed, and the terminals need to be purchased and installed again, and a system platform needs to be modified, so that the decision pressure and cost of the user are high; when the satellite communication terminal system provided by the invention is used for replacing operators, only the satellite communication module needs to be disassembled and replaced on line, the deployment time is short, the cost is low, and the decision pressure of selecting the operators in the early stage by a user is avoided; the cost-to-efficiency ratio of the network service is improved: the link quality, the flow price and the timeliness of different internet of things constellations are different, and when a plurality of networks are available at the same time, the network selection strategy algorithm used in the patent selects the optimal service network by comprehensively analyzing the price elements, the link quality elements and the timeliness elements, so that the overall cost-effectiveness ratio of network services is improved.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (11)
1. A communication terminal system of a multi-mode Internet of things satellite is characterized by comprising a satellite baseband unit array, a radio frequency unit, a baseband switch switching unit, an intermediate frequency switch switching unit, a main control unit, a radio frequency interface, a network switching management unit, a GNSS unit, a sensor unit and a data storage unit;
the satellite baseband unit array is used for realizing the transmission and the reception of data in different satellite networks;
the radio frequency unit is used for simultaneously being compatible with a plurality of working frequency bands;
the baseband switch switching unit is used for connecting a data exchange path between the received and transmitted data and the corresponding satellite baseband unit;
the intermediate frequency switch switching unit is used for connecting a signal transmission channel of the satellite baseband unit and the radio frequency unit;
the main control unit is used for automatically identifying, registering and managing network parameters of the satellite baseband unit array module;
the radio frequency interface is used for being compatible with at least two radio frequency link frequency bands of operators;
the network switching management unit is used for realizing the algorithm for managing satellite network service parameters, managing network switching strategy weight factors and realizing network switching strategies;
the GNSS unit is used for acquiring the current geographic position and time;
the sensor unit is used for acquiring the state of a monitored object;
the data storage unit is used for storing the data acquired by the sensing unit, the satellite network service parameters and the communication terminal service log information.
2. The communication terminal system of the multi-mode internet of things satellite according to claim 1, wherein the main control unit further comprises parameter configuration issuing for a baseband switch/intermediate frequency switch/radio frequency unit, activation and dormancy control of a satellite baseband module, GNSS position positioning/time service data reading, and control and reading of a sensing module and a data storage module.
3. The multimode internet of things satellite communication terminal system according to claim 1, wherein the radio frequency unit further comprises a dynamically adjustable master control unit configured to configure parameters of the radio frequency link according to different modules.
4. The communication terminal system of the multimode internet of things satellite according to claim 1, wherein the state of the monitored object comprises various service state acquisition data including but not limited to temperature, humidity and pressure.
5. The communication terminal system of the multi-mode internet of things satellite according to claim 1, wherein the network switching management unit further comprises a network switching strategy for realizing dynamic selection of the network, and the final selection result is fed back to the main control unit for realizing dynamic switching of the satellite network.
6. A network management method of a multimode Internet of things satellite communication terminal system is characterized by comprising the following steps,
installing a satellite baseband unit, and automatically initiating an online registration application to a main control unit by the satellite baseband unit;
the main control unit acquires current position information from the GNSS module and transmits the current position information to the network management unit, and the network management unit determines the optimal access network and transmits the corresponding baseband unit number and the link configuration parameters or configuration files to the main control unit;
after successfully acquiring the serial number of the satellite baseband module, the main control unit awakens the baseband module, the intermediate frequency switch, the radio frequency switch and the radio frequency module from a low-power-consumption sleep mode;
the main control unit transmits the system configuration parameters/configuration files, the frequency parameter configuration, the baseband switch switching unit configuration and the intermediate frequency switch configuration to the radio frequency module, the intermediate frequency switch and the radio frequency switch respectively to complete the link parameter and data channel configuration;
the main control unit transmits data to be transmitted to a selected satellite network baseband module for modulation through a data channel gated by the baseband switch switching unit, transmits a modulated intermediate frequency signal to a radio frequency module for frequency conversion and amplification through an intermediate frequency switching switch, and finally transmits the intermediate frequency signal through a radio frequency antenna to establish a communication link with a satellite;
the radio frequency antenna receives radio frequency signals transmitted by a satellite, and the radio frequency signals are transmitted to a selected satellite network baseband module for demodulation through the intermediate frequency switch after being subjected to frequency conversion processing by the radio frequency module;
receiving and transmitting data packets to complete a complete data transmission process;
after the data receiving and sending are finished, the main control unit sends a dormancy order to the baseband module, the intermediate frequency change-over switch, the radio frequency change-over switch and the radio frequency module, so that the modules enter a dormancy state to reduce the power consumption of the system.
7. The network management method of the multimode internet of things satellite communication terminal system according to claim 6, wherein the main control unit can acquire the link configuration and the service area information of the communication module from the installed satellite baseband module and feed back a registration success message.
8. The network management method of the multimode internet of things satellite communication terminal system according to claim 6, further comprising the step of determining the optimal access network of the current area by the network management unit by using a satellite service network policy algorithm.
9. The network management method of the multimode internet of things satellite communication terminal system according to claim 6, wherein the data to be transmitted comprises data of a sensor unit or data of a data storage unit.
10. The network management method of the multimode internet of things satellite communication terminal system according to claim 6, further comprising transmitting satellite data received by the radio frequency unit to a corresponding baseband unit through the intermediate frequency switch switching unit, and demodulating signals by the satellite baseband unit.
11. The network management method of the multimode internet of things satellite communication terminal system according to claim 6, further comprising transmitting the demodulated data to the main control unit through the baseband switch switching unit, and performing subsequent processing on the data packet by the main control unit.
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| CN112600562A (en) * | 2020-12-01 | 2021-04-02 | 四川虹美智能科技有限公司 | Encoding and decoding method and device, computer readable medium and Internet of things equipment |
| CN112751587A (en) * | 2020-12-28 | 2021-05-04 | 北京小米移动软件有限公司 | Method and device for controlling path selection switch, terminal and storage medium |
| CN114285912A (en) * | 2022-03-03 | 2022-04-05 | 中移(上海)信息通信科技有限公司 | Communication method, device and satellite convergence gateway |
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| CN117155456A (en) * | 2023-08-31 | 2023-12-01 | 北京中捷时代航空科技有限公司 | Array signal acquisition and playback method, system, electronic device and readable storage medium |
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