Multi-mode wireless satellite communication terminal, system and communication method

Abstract

The present invention discloses a multi-mode wireless satellite communication terminal, which integrates FDMA and TDMA communication modules and an integrated management module, and realizes wireless access of user wireless terminals by embedding WIFI and LORA units in the integrated management module, and realizes various communication applications through a satellite communication gateway. Furthermore, the present invention also discloses a user terminal, a communication method, and a multi-mode wireless satellite communication system corresponding to the terminal. The present invention can realize seamless switching of FDMA and TDMA satellite communication systems and transmission modes according to the type of communication service, and support wireless access of satellite earth station users at the same time, thereby flexibly and conveniently realizing human-computer interaction and communication service applications, greatly improving the user experience.

Description

Technical Field

[0001] The present application belongs to the field of satellite communication applications, and specifically relates to satellite multi-mode communication systems and regional user wireless access technologies. Background Art

[0002] With the continuous advancement and expansion of satellite communication related technologies and business applications, satellite communications are being used more and more widely in various industries and fields, especially in military communications, news interviews, geological exploration, earthquake relief, forest fire prevention and other industry applications, as well as consumer communication applications.

[0003] At present, the satellite communication system mainly adopts FDMA and TDMA. The FDMA system is generally used for satellite communication systems with a small number of earth stations and a large communication capacity. It is flexible in networking and suitable for dedicated line communication guarantee. However, due to the existence of multi-carrier operation, the satellite frequency resource utilization rate of the system is low. The TDMA system is generally used for satellite communication systems with a large number of earth stations. The networking is more complicated, but it is more flexible in use and suitable for daily communication. There is no multi-carrier operation, and the satellite resource utilization rate is high. In order to better meet different application scenarios, it is necessary to flexibly switch the communication system according to the actual application to achieve efficient use of satellite resources for daily communication and emergency dedicated network guarantee, real-time communication and non-real-time communication.

[0004] At the same time, at present, the user terminal equipment corresponding to the satellite earth station mainly adopts wired access, such as wired telephones, computers, audio and video equipment, etc., which are relatively complicated to operate, use and maintain. In order to adapt to the popularization and application of modern user communication terminals, the use of common wireless user terminals on the market (such as wireless products based on Android, IOS and Windows systems) and the use of wireless access to achieve user-earth station interaction and application can greatly improve the user experience.

[0005] The invention patent "Service-driven Adaptive Transmission Method for Satellite Communications" with publication number CN105634993A effectively combines the advantages of time domain and frequency domain resources in service transmission, introduces service-driven capabilities into the system, establishes a resource allocation mechanism based on business characteristics, and realizes the adaptive transformation capability of the system. However, the patent focuses on the realization of an application method, the overall system architecture and the corresponding terminal applications. It is an application method that takes into account the system and equipment levels and focuses more on system design. It is only applicable to newly built satellite communication systems. Summary of the invention

[0006] In order to enhance the flexibility of user satellite communication earth stations in communication systems, user access methods and application methods, the present invention proposes a multi-mode wireless satellite communication terminal, system and corresponding method, which can realize seamless switching of two satellite communication systems and transmission methods, FDMA and TDMA, according to the type of communication service, and support wireless access of satellite earth station users, thereby flexibly and conveniently realizing human-computer interaction and communication service applications, greatly improving the user experience.

[0007] To achieve the above invention purpose, the present invention integrates core modules such as FDMA and TDMA communication modules, integrated management modules, and realizes wireless access of user wireless terminals (mobile phones, PADs, PCs, etc.) by embedding WIFI (Route mode) and LORA (AP mode) wireless communication units in the integrated management module, and realizes various communication applications via satellite communication gateways. Compared with the prior art, the present invention mainly makes the following three improvements, namely: 1) business type identification and transmission mode selection; 2) earth station user wireless access; 3) APP application mode.

[0008] Among them, regarding the identification of service types and the selection of transmission modes, the difference between the present invention and the above invention (CN105634993A) is that: the present invention only makes an initial identification of the service type and selects the corresponding transmission mode, and the transmission mode is no longer switched during the communication process; only when the TDMA transmission system is adopted, the satellite communication gateway adjusts the communication time slot in real time according to the change of the communication rate to improve the flexibility of resource use. The advantage of this method is that it can be directly applied to the existing satellite communication system without the need for software and hardware modification, and the implementation method is simpler and the cost is lower.

[0009] Among them, the present invention adopts WIFI and LORA wireless access methods to replace the traditional wired methods to access user service terminals, so that earth station users can conveniently use ordinary mobile phones, PADs or PCs and other devices with wireless access capabilities to realize various communication services; especially the introduction of LORA wireless communication method based on Internet of Things technology, so that the user wireless access range can reach up to 15km; at the same time, the combination of LORA and WIFI can comprehensively utilize the advantages of the two wireless access methods. WIFI provides high-speed transmission services for short-distance users, and LORA provides low-speed, stable and reliable transmission links for long distances.

[0010] Among them, the multi-mode communication APP can provide users with a simple, convenient, easy-to-use and friendly human-computer interaction interface, which facilitates users to manage device status and use various communication services.

[0011] The specific technical solutions of the present invention are as follows:

[0012] Solution 1: A multi-mode wireless satellite communication terminal, comprising a communication module and an integrated management module, an intermediate frequency power distribution module and a power management module, wherein the communication module comprises an FDMA communication module and a TDMA communication module, and the integrated management module is configured with a WIFI unit and a LORA unit; the FDMA communication module, the TDMA communication module and the LORA unit are connected to the WIFI unit through a network interface;

[0013] The communication module is configured to transmit local service information and receive peer service information through an intermediate frequency power distribution module, and to encode and modulate or demodulate and decode the service information; the service information includes an IP tag for indicating the service type to which it belongs;

[0014] The WIFI unit adopts routing mode, the LORA unit adopts hotspot mode, and the WIFI unit provides information interaction with the above communication module for WIFI and LORA users.

[0015] Among them: the FDMA communication module is mainly responsible for the carrier communication of SCPC / DAMA transmission signals; the TDMA communication module is mainly responsible for the carrier communication of TDM / TDMA transmission signals.

[0016] As a preferred solution, the multi-mode wireless satellite communication terminal also includes an interface unit, which is connected to the WIFI unit through a network interface; the FDMA and TDMA communication modules realize working status indication through the interface unit; and the interface unit is also used to provide information interaction between wired terminal users and the above-mentioned communication modules.

[0017] As a preferred solution, the multi-mode wireless satellite communication terminal also includes a power management module; the power management module receives external power supply and supplies power to the FDMA communication module, TDMA communication module, WIFI unit and LORA unit after DC / DC conversion.

[0018] As a preferred solution, the multi-mode wireless satellite communication terminal also includes an antenna and a radio frequency device connected to the intermediate frequency power distribution module.

[0019] Solution 2: A user terminal includes a processor and a memory, characterized in that it is also configured with a LORA access module, a WIFI access module, and multiple service modules for realizing voice, short message and video functions; a multi-mode communication program is stored in the memory, and when the multi-mode communication program is run by the processor, the following instructions are executed:

[0020] Responding to user operations, generating corresponding control information or service information; marking the above information with an IP address to mark the service type to which it belongs; and then sending the above information via a wireless communication link;

[0021] Alternatively, the service information sent by the opposite end is received, identified according to the IP tag contained in the service information, and distributed to the corresponding service module.

[0022] Option 3: A multi-mode wireless satellite communication system, characterized in that it includes a communication satellite, a satellite communication gateway, a ground communication network, a user terminal, and a satellite communication earth station equipped with a multi-mode wireless satellite communication terminal; the multi-mode wireless satellite communication terminal has the characteristics described in Option 1; the user terminal has the characteristics described in Option 2.

[0023] Solution 4: A communication method, applied to the multi-mode wireless satellite communication terminal described in Solution 1, comprising:

[0024] Receiving the service information sent by the local user terminal through WIFI and LORA through the LORA unit or the WIFI unit; broadcasting the service information through the WIFI unit; receiving the service information of the corresponding service type through the FDMA communication module or the TDMA communication module and performing carrier communication on it; finally sending the service information to the opposite end through the intermediate frequency power distribution module;

[0025] In addition, the service information sent by the opposite end is received through the intermediate frequency power distribution module and distributed to each communication module; the FDMA communication module or the TDMA communication module receives the service information of the corresponding service type and performs carrier communication on it; and then it is sent to the local user terminal through the WIFI unit, or forwarded to the LORA unit through the WIFI unit and then sent to the local user terminal.

[0026] As a preferred solution, the service types include voice, short message and video information, and data access; when the service type of the service information is voice, short message and video information, the FDMA communication module performs carrier communication; when the service type of the service information is data access, the TDMA communication module performs communication.

[0027] As a preferred solution, the IP tag is a frame tag.

[0028] As a preferred solution, after the FDMA communication module receives the service information sent by the local user terminal, it reports the communication demand application including the identity information of the other party, the service type and the service rate to the network management center, and performs carrier communication according to the frequency domain resources allocated by the network management center; after the TDMA communication module receives the service information sent by the local user terminal, it performs carrier communication according to the communication time slot pre-allocated by the network management center.

[0029] As a preferred solution, the TDMA communication module performs carrier communication according to the communication time slots pre-allocated by the network management center, and when the service rate demand increases, requests the network management center to dynamically adjust the time slot allocation to obtain a suitable communication time slot.

[0030] The present invention has the following beneficial effects:

[0031] (1) The present invention is applicable to both newly built satellite communication systems and to the enhancement of the capabilities of existing satellite communication systems. There is no need to change the existing network management architecture and strategy, and the present invention is not limited by the installation platform and the use occasion. It can be widely used in mission platforms such as airborne, shipborne, vehicle-mounted, and single-person portable satellite communication equipment.

[0032] (2) It can seamlessly switch between appropriate satellite communication systems and transmission methods according to the type of communication service, providing both daily communication and private network communication guarantees. This can not only improve the utilization efficiency of the system's satellite resources and reduce operator investment, but also enhance the user experience.

[0033] (3) It can manage device status and conduct business applications through APP on wireless terminals such as mobile phones, PADs, and portable computers. It is simple, convenient and easy to use.

[0034] (4) Using wireless access can also reduce the number of equipment accessories, enhance flexibility and convenience, increase user access distance and coverage, and increase equipment reliability and maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the connection of the internal functional modules of the multi-mode wireless satellite communication terminal;

[0036] Figure 2 This is a schematic diagram of the program unit composition of the multi-mode communication APP;

[0037] Figure 3 This is a schematic diagram of a multi-mode communication APP application;

[0038] Figure 4 It is a schematic diagram of the signal transmission process of a multi-mode wireless satellite communication terminal;

[0039] Figure 5 It is a schematic diagram of the signal receiving process of a multi-mode wireless satellite communication terminal;

[0040] Figure 6 This is a schematic diagram of the composition of a multi-mode wireless satellite communication system. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] like Figure 1As shown, Example 1 discloses a multi-mode wireless satellite communication terminal, which can be applied to FDMA / TDMA multi-mode satellite communication systems or existing FDMA or TDMA satellite communication systems, and is mainly composed of an FDMA communication module, a TDMA communication module, an intermediate frequency power distribution module, a power management module and an integrated management module. Among them: the FDMA communication module is mainly responsible for signal coding-modulation-transmission and reception-demodulation-decoding under the SCPC / DAMA transmission mode, and adopts a frequency division multiple access method to distinguish users by frequency; the TDMA communication module is mainly responsible for coding-modulation-transmission and reception-demodulation-decoding under the TDM / TDMA transmission mode, and adopts a time division multiple access method to distinguish users by time slots; the intermediate frequency power distribution module is mainly used for sending and receiving satellite intermediate frequency signals, and the FDMA communication module and the TDMA communication module are connected to the antenna and radio frequency equipment of the satellite communication earth station through the intermediate frequency power distribution module, thereby realizing the reception and transmission of satellite intermediate frequency signals; the power management module connects It receives external power and supplies power to the FDMA communication module, TDMA communication module and the functional units embedded in the integrated management module after DC / DC conversion; the integrated management module has built-in WIFI unit, LORA unit and interface unit, which is an integrated module. The WIFI unit adopts routing mode (Route mode) and is responsible for the reception and transmission of space WIFI wireless signals. The LORA unit adopts hotspot mode (AP mode) and is responsible for the reception and transmission of space LORA wireless signals. However, inside the multi-mode wireless satellite communication terminal, the forwarding processing is concentrated in the WIFI unit, and the WIFI unit provides information interaction with each communication module for WIFI and LORA users.

[0043] In the multi-mode wireless satellite communication terminal, the FDMA communication module, TDMA communication module and LORA unit are connected to the WIFI unit through the network interface to realize IP data exchange; the FDMA communication module and the TDMA communication module are also connected to the interface unit through the WIFI unit; the WIFI unit is connected to the interface unit through the network interface to provide a wired data interface for the user. Specifically: the LORA unit is connected to the WIFI unit LAN port, the FDMA communication module is connected to the WIFI unit LAN port, the business and management network ports of the TMDA communication module are connected to the WAN port and LAN port of the WIFI unit respectively, and the external LAN interface of the multi-mode wireless satellite communication terminal is connected to the WIFI unit LAN port; at the same time, the working status indication of the FDMA and TDMA communication modules is connected to the outside of the multi-mode wireless satellite communication terminal through the interface unit, which is convenient for users to observe their working status.

[0044] Combination Figure 2 and Figure 3As shown, Example 2 discloses a multi-mode communication APP (referred to as "APP") installed in a user terminal, and the functional modules mainly include a data interface unit, a human-computer interaction unit, a business data processing unit and a management data processing unit. The human-computer interaction unit is used to display status and business information to the user, receive the user's control instructions and business requests, and form corresponding control information and business information; the business data processing unit is used for frame processing of business information (for example, distinguishing business types, determining whether business data flows to FDMA or TDMA), and interacting with the multi-mode wireless satellite communication terminal and the human-computer interaction unit through the data interface unit. The data interface unit is used to send and receive control information and business information to the multi-mode wireless satellite communication terminal through a WIFI or LORA link, and is also used for information interaction with the human-computer interaction unit; the management data processing unit is used for frame processing of control information sent by the human-computer interaction unit, and sends instructions to the multi-mode wireless satellite communication terminal through the data interface unit. The LORA access module can be obtained as a random standard or purchased separately. It increases the ability of the user terminal to connect to the LORA hotspot without connecting to the user terminal data interface (USB or common mobile phone data interface). At the same time, the module can also be directly embedded in the user terminal according to user customization needs.

[0045] like Figure 4 As shown, when the earth station user makes a call, the multi-mode communication APP installed on the user terminal is operated according to the business needs to perform business communication. The multi-mode communication APP performs frame processing on the business information according to the business type, and the processed data is transmitted to the WIFI unit inside the multi-mode wireless satellite communication terminal via a wireless link (WIFI or LORA link). At this time, frame tags of different business types are used, and voice, short messages and video information are received, encoded and modulated by the FDMA communication module, and data information is received, encoded and modulated by the TDMA communication module; finally, it is sent out through the intermediate frequency power allocation module.

[0046] like Figure 5 As shown, when being called or receiving service information, the FDMA communication module and the TMDA communication module receive the service information sent by the other end through the intermediate frequency power distribution module, and then transmit it to the WIFI unit in a centralized manner, and then transmit it to the user terminal through the WIFI unit or the LORA unit via a wireless link. The multi-mode communication APP of the user terminal identifies the frame mark contained in the service information and distributes it to the service module corresponding to voice, short message, video or data access.

[0047] It should be noted that the above service types are distinguished based on symmetric and asymmetric communications, wherein voice, short message and video services are symmetric communications, and data access, including data upload and download, is asymmetric communications.

[0048] like Figure 6The illustrated embodiment 3 discloses a multi-mode wireless satellite communication system (referred to as "the system"), taking the FDMA / TDMA multi-mode satellite communication system as an example, the system includes a communication satellite, a satellite communication earth station (including an antenna and radio frequency equipment) equipped with a multi-mode wireless satellite communication terminal, a user terminal, a satellite communication gateway, and a ground communication network.

[0049] Among them, the satellite communication earth station is mainly composed of antennas and equipment RF, multi-mode wireless satellite communication terminals and related supporting equipment. It is mainly used for satellite signal reception and transmission, business information processing and user access, providing users with data transmission channels and communication services.

[0050] Among them, the user terminal is a common wireless communication terminal on the market, such as a smart phone, PAD, computer with WIFI function, etc. The user terminal can use the built-in WIFI to connect to the multi-mode wireless satellite communication terminal, or connect to the multi-mode wireless satellite communication terminal through a dedicated LORA access module, and realize various applications through the pre-installed dedicated multi-mode communication APP.

[0051] The satellite communication gateway station mainly includes antenna and radio frequency equipment, network management equipment (i.e., network management center) and service relay equipment, which are used to realize network management and service processing functions. The network management function is mainly to manage the satellite resources, earth stations and communications of the system, and provide networking and resource support for the earth stations; the service processing function is mainly to provide interconnection between remote satellite earth station users and ground communication network users, provide information access, interaction and forwarding, and realize communication services between users.

[0052] Among them, the terrestrial communication network mainly includes PSTN (public switched telephone network), PLMN (public land mobile network), Internet, as well as special communication networks such as military automatic telephone network and enterprise data network.

[0053] In this system, the satellite communication earth station equipped with a multi-mode wireless satellite communication terminal relies on communication satellites, space links (satellite links) and satellite communication gateways to access the ground communication network. Users can use mobile phones, PADs and other wireless communication devices to access the multi-mode wireless satellite communication terminal, and then access the ground communication network through the satellite communication gateway to realize various business applications. When in use, the multi-mode wireless satellite communication terminal is powered on and connected to the network. Users use mobile phones and other wireless communication devices to access and initiate business needs through WIFI or LORA. After receiving the communication needs of the earth station, the satellite communication gateway provides it with a space link and provides data exchange with the ground communication network. It should be noted that the antenna and RF equipment can also be designed as an integrated whole with the multi-mode wireless satellite communication terminal.

[0054] The multi-mode wireless satellite communication terminal integrates core modules such as FDMA and TDMA communication modules and an integrated management module, and realizes wireless access of user wireless terminals through the WIFI and LORA wireless modules embedded in the integrated management module, and realizes various communication applications through the satellite communication gateway. Specifically, the multi-mode wireless satellite communication terminal described in Example 1 can be used.

[0055] Embodiment 4 discloses a multi-mode wireless satellite communication method, which is based on the multi-mode wireless satellite communication system described in Embodiment 3 and mainly includes the following steps:

[0056] S1. After being powered on, the multi-mode wireless satellite communication terminal automatically searches for the TDM signal sent by the network management center according to preset parameters and completes the network access.

[0057] S12. The earth station user searches for the wireless signal of the multi-mode wireless satellite communication terminal on the user terminal (externally connected or with built-in LORA access module), and chooses to access the multi-mode wireless satellite communication terminal via WIFI or LORA according to the demand or signal strength. Among them, the WIFI coverage radius is about 50 meters, which is mainly suitable for high-speed services when the user terminal is close to the earth station, and the LORA coverage radius can reach up to 15km, which is mainly suitable for low-speed services when the user terminal is far away from the earth station.

[0058] S13. When the earth station user makes a service call and communicates through the multi-mode communication APP human-computer interaction interface of the user terminal, the management data processing unit and the service data processing unit of the APP perform frame processing on the called number, service rate and service information, and the APP data interface unit sends it to the WIFI unit of the multi-mode wireless satellite communication terminal via the WIFI or LORA wireless link. After the frame-processed data arrives at the WIFI unit, it will be broadcast to each unit module, and each unit module will choose to process or discard the data according to the frame header identifier. It should be noted that the WIFI unit is used for data exchange. When wireless or wired connection is used, all unit modules in the multi-mode wireless satellite communication terminal except the power supply and intermediate frequency power distribution unit are connected to this unit for data exchange.

[0059] Specifically, the user initiates a service call through the APP human-computer interaction unit. If the service type is voice, short message, data transmission (also called data access) and real-time video service, the management data processing unit performs frame processing on the control information such as the called number, service type and communication rate of this call, and sends it to the WIFI unit of the multi-mode wireless satellite communication terminal through the data interface unit through the wireless link; the WIFI unit broadcasts the control information, and all modules except the FDMA communication module discard the information. After the FDMA communication module obtains the information, it establishes a satellite communication link with the opposite earth station according to the called number and communication rate contained therein; after the link is successfully established, the FDMA communication module sends the link status to the APP, and the user can perform service communication at this time; during service communication, the user's voice, short message, data and video information are frame processed by the APP service data processing unit, and sent to the WIFI unit of the multi-mode wireless satellite communication terminal through the data interface unit through the wireless link, the WIFI unit broadcasts the service information, and all modules except the FDMA communication module discard the information. After the FDMA communication module obtains the information, it sends it to the opposite earth station to realize service communication.

[0060] If the service type is data access, it directly enters the service data frame processing, which is performed by the APP service data processing unit and sent to the WIFI unit of the multi-mode wireless satellite communication terminal through the wireless link via the data interface unit. The WIFI unit broadcasts the service information, and other modules except the TDMA communication module discard the information. After obtaining the information, the TDMA communication module sends it to the opposite earth station to realize service communication.

[0061] Among them, the specific way in which the network management center allocates frequency domain (FDMA) resources is as follows: after the FDMA communication module receives the service information forwarded by the intermediate frequency power allocation module, it reports the communication demand application including the other party's number, service type, and service rate to the network management center through the TDM channel; the receiving network management center allocates the transmitting and receiving frequencies for the communicating parties according to the type and rate of the communication service; then the service information is modulated at the corresponding frequency and sent to the radio frequency equipment, and the other end demodulates it on the corresponding frequency carrier.

[0062] Among them, the TDMA communication module sends service information on the time slot pre-allocated by the network management center. If the service rate demand increases, the network management center will dynamically adjust the time slot allocation according to the QoS demand, allocate more communication time slots to the TDMA communication module of the corresponding earth station, and improve its communication capability.

[0063] It can be seen that the above process can realize the flexible application of FDMA and TDMA systems, as well as user wireless access and application, and then realize the communication service application of local and end users.

[0064] It should be noted that in addition to using WIFI and LORA wireless access, the multi-mode wireless satellite communication terminal can also retain the physical interfaces for telephone, data and other services, and has the ability to provide services to wired terminal users. That is, the user terminal can also be a wired terminal, such as a second-line telephone, computer, etc., and when in use, it can be connected via telephone cables and network cables.

[0065] In summary, it can be seen that the present invention, through overall consideration and integrated design, the multi-mode wireless satellite communication terminal can provide users with dual communication transmission systems and seamless switching experience, and can select the appropriate communication transmission mode according to the system design strategy without user intervention, which can adapt to different communication needs and application scenarios, and effectively improve the utilization rate of satellite resources; through the integration of WIFI, especially the introduction of LORA wireless access mode, the flexibility of business terminal layout and use is greatly improved, and the service range of the earth station is improved, thereby realizing the service capabilities of close-range high-speed communication and long-distance reliable communication; at the same time, by using mobile phones, PADs and other common wireless products in the market + multi-mode communication APP, it provides users with an extremely convenient, simple and easy-to-use and easy-to-maintain usage mode and experience operation. In addition, the present invention can be applied to new satellite communication systems, and can also be conveniently upgraded and transformed to existing communication satellite earth stations by building or installing them in existing various types of satellite communication earth stations without making any changes to the existing satellite communication system.

[0066] Finally, it should be noted that although the embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields, and the above-mentioned specific embodiments are only illustrative and instructive, rather than restrictive. Under the guidance of this specification, a person of ordinary skill in the art can also make many forms without departing from the scope of protection of the claims of the present invention, all of which belong to the scope of protection of the present invention.

Claims

1. A multi-mode wireless satellite communication terminal, characterized in that: It includes a communication module and an integrated management module, an intermediate frequency power distribution module and a power management module, wherein the communication module includes an FDMA communication module and a TDMA communication module, and the integrated management module is configured with a WIFI unit and a LORA unit; the FDMA communication module, the TDMA communication module and the LORA unit are connected to the WIFI unit through a network interface; The communication module is configured to transmit local service information and receive peer service information through an intermediate frequency power distribution module, and to encode and modulate or demodulate and decode the service information; the service information includes an IP tag for indicating the service type to which it belongs; The WIFI unit adopts a routing mode, the LORA unit adopts a hotspot mode, and the WIFI unit provides information interaction with the communication module for WIFI and LORA users.

2. The multi-mode wireless satellite communication terminal according to claim 1, characterized in that: It also includes an interface unit, which is connected to the WIFI unit through a network interface; the FDMA communication module and the TDMA communication module realize working status indication through the interface unit; and the interface unit is also used to provide information interaction between wired terminal users and the above communication modules.

3. The multi-mode wireless satellite communication terminal according to claim 1, characterized in that: It also includes a power management module; the power management module receives external power supply and supplies power to the FDMA communication module, the TDMA communication module, the WIFI unit and the LORA unit after DC / DC conversion.

4. A multi-mode wireless satellite communication system, characterized in that: The invention comprises a communication satellite, a satellite communication gateway, a ground communication network, a user terminal, and a satellite communication earth station equipped with a multi-mode wireless satellite communication terminal; the multi-mode wireless satellite communication terminal has the characteristics as described in any one of claims 1 to 3; the user terminal comprises a processor and a memory, and is also equipped with a LORA access module, a WIFI access module, and a plurality of service modules for realizing voice, short message and video functions; the memory stores a multi-mode communication program, and when the multi-mode communication program is run by the processor, the following instructions are executed: Responding to user operations, generating corresponding control information or service information; marking the above information with an IP address to mark the service type to which it belongs; and then sending the above information via a wireless communication link; Alternatively, the service information sent by the opposite end is received, identified according to the IP tag contained in the service information, and distributed to the corresponding service module.

5. A communication method, characterized in that: The multi-mode wireless satellite communication terminal according to any one of claims 1 to 3 comprises: Receive business information sent by local user terminals via WIFI and LORA through LORA units or WIFI units; The service information is broadcasted through the WIFI unit; the FDMA communication module or the TDMA communication module receives the service information of the corresponding service type and performs carrier communication on it; finally, the service information is sent to the opposite end through the intermediate frequency power distribution module; In addition, the service information sent by the opposite end is received through the intermediate frequency power distribution module and distributed to each communication module; the FDMA communication module or the TDMA communication module receives the service information of the corresponding service type and performs carrier communication on it; and then it is sent to the local user terminal through the WIFI unit, or forwarded to the LORA unit through the WIFI unit and then sent to the local user terminal.

6. The communication method according to claim 5, characterized in that: The service types include voice, short message and video information, and data access; when the service type of the service information is voice, short message and video information, the FDMA communication module performs carrier communication; when the service type of the service information is data access, the TDMA communication module performs communication.

7. The communication method according to claim 5, characterized in that: The IP tag is a frame tag.

8. The communication method according to claim 5, characterized in that: After receiving the service information sent by the local user terminal, the FDMA communication module reports the communication demand application including the identity information of the other party, the service type and the service rate to the network management center, and performs carrier communication according to the frequency domain resources allocated by the network management center; after receiving the service information sent by the local user terminal, the TDMA communication module performs carrier communication according to the communication time slot pre-allocated by the network management center.

9. The communication method according to claim 8, characterized in that: The TDMA communication module performs carrier communication according to the communication time slots pre-allocated by the network management center, and when the service rate demand increases, requests the network management center to dynamically adjust the time slot allocation to obtain a suitable communication time slot.

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