Airborne terminal, network connection method, device, equipment, medium and program product

Abstract

The invention provides an airborne terminal, a network connection method, a network connection device, equipment, a medium and a program product, and relates to the technical field of 5G airborne wireless communication, the airborne terminal comprises a first communication module used for receiving a first network signal, the first network signal being a network signal of a network used for ground communication; the second communication module is used for receiving a second network signal, and the second network signal is a network signal of the air-to-ground ATG network; and the main control unit is connected with the first communication module and the second communication module, and the main control unit is used for controlling the first communication module to receive the first network signal and / or controlling the second communication module to receive the second network signal according to the flight parameters of the flight equipment. In the embodiment of the invention, the main control unit is respectively connected with the two communication modules, so that the main control unit can start the corresponding communication modules to receive the network signals according to the flight parameters of the flight equipment in different flight stages, manual operation is reduced, and the operation convenience is improved.

Description

Technical Field

[0001] The present application relates to the field of 5G airborne wireless communication technology, and in particular to an airborne terminal, a network connection method, an apparatus, equipment, a medium, and a program product. Background Art

[0002] 5G modules and customer premises equipment (CPE) only support access to ordinary terrestrial 5G networks, while 5G air-to-ground (ATG) networks can support higher maximum mobile speeds and longer coverage distances, far exceeding ordinary 5G networks.

[0003] However, current 5G and 5G ATG modules can only access their respective networks. For example, the 5G or ATG modules used on aircraft can only support a single network. Therefore, because the aircraft needs to connect to different networks during different flight phases, it needs to carry two modules supporting different networks and manually select the module to connect to the corresponding network, which is cumbersome. Summary of the Invention

[0004] The embodiments of the present application provide an airborne terminal, a network connection method, an apparatus, a device, a medium, and a program product to solve the problem of cumbersome operations when connecting a module to a corresponding network.

[0005] To solve the above technical problems, this application is implemented as follows: In a first aspect, an embodiment of the present application provides an airborne terminal, including: a first communication module, configured to receive a first network signal, wherein the first network signal is a network signal of a network used for terrestrial communication; A second communication module is configured to receive a second network signal, where the second network signal is a network signal of an air-to-ground (ATG) network; A main control unit is connected to both the first communication module and the second communication module. The main control unit is used to control the first communication module to receive the first network signal and / or control the second communication module to receive the second network signal according to the flight parameters of the flight equipment.

[0006] Optionally, the main control unit includes a main control board, which is connected to the first communication module through a first connector and to the second communication module through a second connector. The main control board decides how to process data from the first communication module and the second communication module.

[0007] Optionally, the main control unit further includes at least one of the following: an optical module, connected to the main control board, and configured to convert a received optical signal into data adapted to the first communication module and / or the second communication module; The data storage unit is connected to the main control board and is used to store received data and / or data to be sent.

[0008] Optionally, the main control unit further includes a power management module, the power management module is connected to the first communication module through a first connector, and is connected to the second communication module through a second connector, and the power management module includes at least one of the following: Power filter module; Step-down module; Surge protection module; Anti-reverse polarity module.

[0009] Optionally, the airborne terminal further includes a first antenna, the first antenna is connected to the first communication module through a radio frequency conversion unit, and the first communication module is used to receive the first network signal through the first antenna; The airborne terminal further includes a second antenna, which is connected to the second communication module through the radio frequency conversion unit, and the second communication module is used to receive the second network signal through the second antenna.

[0010] Optionally, the first antenna is an airborne omnidirectional antenna, and the second antenna is an airborne phased array antenna.

[0011] Optionally, the flying device is any one of an airplane, an electric vertical take-off and landing aircraft eVTOL, and a drone; The first antenna is respectively installed on the belly and / or the top of the flying device; The second antenna is installed on the belly of the flying device.

[0012] Optionally, the airborne terminal further includes at least one of the following: At least one of a first power amplifier and a second power amplifier, the radio frequency conversion unit is connected to the first communication module via the first power amplifier, and / or the radio frequency conversion unit is connected to the second communication module via the second power amplifier; At least one of a first global positioning system (GPS) antenna and a second GPS antenna, wherein the first GPS antenna is connected to the first communication module, and the second GPS antenna is connected to the second communication module.

[0013] Optionally, the main control unit is used to control the first communication module to turn on and receive the first network signal according to flight parameters of the flight equipment, and / or control the second communication module to turn on and receive the second network signal.

[0014] Optionally, the flight parameters include at least one of flight speed and flight altitude.

[0015] In a second aspect, an embodiment of the present application provides a network connection method, which is applied to the airborne terminal described in any one of the first aspects, wherein the airborne terminal includes a first communication module, a second communication module, and a main control unit, wherein the first communication module is used to receive a first network signal, and the second communication module is used to receive a second network signal; the method includes: Acquiring flight parameters of the flight equipment through the main control unit; When the flight parameter is within a first parameter range, controlling the first communication module to be in an on state and controlling the second communication module to be in an off state; When the flight parameter is within a second parameter range, controlling the first communication module and the second communication module to be in an on state; When the flight parameter is within a third parameter range, the first communication module is controlled to be in an off state, and the second communication module is controlled to be in an on state.

[0016] Optionally, the flight parameter includes at least one of a flight altitude and a flight speed; The first parameter range is: the flight altitude is 0, and the flight speed is less than the first speed; The second parameter range is: the flight altitude is greater than 0 and less than the first altitude, and the flight speed is less than the first speed; The third parameter range is: the flight speed is greater than the first speed and / or the flight altitude is greater than the first altitude.

[0017] Optionally, the method further includes: detecting a first signal quality parameter of a first network signal received by the first communication module, and switching the first communication module to the second communication module based on the first signal quality parameter and a signal parameter threshold of the first communication module; and / or, Detecting a second signal quality parameter of a second network signal received by the second communication module, and switching the second communication module to the first communication module according to the second signal quality parameter and a signal parameter threshold of the second communication module.

[0018] In a third aspect, an embodiment of the present application provides a network connection device, which is applied to the airborne terminal as described in the first aspect, wherein the airborne terminal includes a first communication module, a second communication module, and a main control unit, wherein the first communication module is used to receive a first network signal, and the second communication module is used to receive a second network signal; the device includes: An acquisition module, configured to acquire flight parameters of the flight equipment through the main control unit; a first control module, configured to control the first communication module to be in an on state and control the second communication module to be in an off state when the flight parameter is within a first parameter range; a second control module, configured to control the first communication module and the second communication module to be in an on state when the flight parameter is within a second parameter range; The third control module is configured to control the first communication module to be in an off state and control the second communication module to be in an on state when the flight parameter is within a third parameter range.

[0019] In a fourth aspect, an embodiment of the present application provides an electronic device comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the network connection method described in the first aspect.

[0020] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the network connection method described in the first aspect are implemented.

[0021] In a sixth aspect, a computer program product is provided, comprising computer instructions, which, when executed by a processor, implement the steps of the network connection method as described in the first aspect.

[0022] In an embodiment of the present application, the main control unit is connected to two communication modules respectively, so that the main control unit can start the corresponding communication module to receive network signals according to the flight parameters of the flight equipment in different flight phases, reducing manual operation and improving operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of an airborne terminal provided in an embodiment of the present application; Figure 2 This is a schematic diagram of the architecture of a 5G module and a ground service terminal provided in an embodiment of the present application; Figure 3 This is a schematic diagram of the structure of a power management module of an airborne terminal provided in an embodiment of the present application; Figure 4 This is a schematic diagram of distributed antenna cross-linking of an airborne terminal provided in an embodiment of the present application; Figure 5 This is a schematic diagram of antenna distribution on the belly of an aircraft provided in an embodiment of the present application; Figure 6 This is a schematic diagram of antenna distribution on the back of an aircraft provided in an embodiment of the present application; Figure 7 This is one of the flow charts of a network connection method provided in an embodiment of the present application; Figure 8 This is the second flowchart of a network connection method provided in an embodiment of the present application; Figure 9 This is a schematic diagram of the structure of a network connection device provided in an embodiment of the present application; Figure 10 This is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] 5G wireless transmission is short for the fifth generation of mobile communication technology. It is a major upgrade based on 4G technology. Compared with 4G technology, 5G wireless transmission has higher speed, lower latency and greater connection capacity, which can meet the growing demand for data.

[0027] With the rapid development of the low-altitude economy, low-altitude Internet will serve as the infrastructure of the low-altitude economy and will cover the low-altitude range below 1,000 meters. A large number of unmanned aerial vehicles have the need to access the 5G network for communication, and the demand for the research and development and adaptation of airborne 5G communication modules is becoming more and more urgent.

[0028] 5G ATG is a wireless network system deeply customized and modified based on 5G technology. It provides a high-speed ground-to-air communication network for civil aircraft flying at altitudes up to 12,000 meters and speeds up to 1,200 km / h. ATG ground base stations have a maximum coverage radius of 300 km. Airborne devices utilize dedicated ATG airborne customer premises equipment (CPE) for wireless access and data transmission with ground ATG base stations. Because the airborne CPE modules are custom-developed, they only support access to the ATG network and cannot connect to standard terrestrial 5G networks.

[0029] The 5G module only supports access to ordinary terrestrial 5G networks, with a maximum mobile speed of 500km / h and a maximum access radius of 102km (3GPP r15 version standard). However, 5G ATG, due to customized modifications to related protocols and access channels, supports a maximum mobile speed of 1200km / h and a maximum access distance of 300km, far exceeding the standard 5G network.

[0030] However, 5G modules and ATG modules can only access their own networks and are not compatible with both standard 5G networks and ATG networks. Aircraft using general 5G modules or ATG modules can only support a single network and cannot meet the requirements of seamless network connection from the ground to flight to high altitude.

[0031] Related technologies include an onboard router device based on 5G communication technology, which includes a main control board, and an interface board, a SIM card board, and a power board respectively connected to the main control board. Applying 5G communication technology to the access port for cabin Internet interaction can achieve an Internet access speed of more than 1Gbps; a wireless cache recorder based on 5G technology, which includes a power module, a data management module, a storage module, and a wireless communication module, overcomes the problems of slow transmission rate and low transmission success rate of traditional cache recorders during actual use.

[0032] The above-mentioned airborne 5G technologies all use single-mode 5G modules for wireless access and data reception and transmission. As airborne data transmission devices, they transmit relevant airborne data back to the ground, and use single-mode standard 5G modules for network connection. Network connection can only be achieved when there is 5G network coverage on the ground.

[0033] Related technologies also include an airborne terminal and method for a Worldwide Interoperability for Microwave Access (WiMAX) and 5G dual-mode Aeronautical Mobile Airport Communications System (AeroMACS). The hardware components primarily include a baseboard, a switchboard, and a protocol processing board. The protocol processing board includes a WiMAX and 5G dual-mode module, a core processor, a flight data storage circuit module, an external interface control module, and a power module. This single module simultaneously implements both 5G and WiMAX communication standards, incorporating 5G communication capabilities. This addresses the technical shortcoming of the AeroMACS system's lack of an airborne terminal during its rollout, improving the security and efficiency of airborne data transmission.

[0034] The aforementioned structure integrates both 5G and WiMAX chips on a single board, sharing a common antenna. Both WiMAX and its 5G module can only connect to data when there is 5G network coverage on the ground, and cannot connect to the network during flight or at high altitudes.

[0035] The embodiments of the present application provide an airborne terminal, a network connection method, an apparatus, a device, a medium, and a program product to solve the problem of cumbersome operations when connecting a module to a corresponding network.

[0036] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of an airborne terminal provided in an embodiment of the present application. Figure 1 Shown, including: A first communication module 11 is configured to receive a first network signal, where the first network signal is a network signal of a network used for terrestrial communication; The second communication module 12 is configured to receive a second network signal, where the second network signal is a network signal of an air-to-ground (ATG) network; The main control unit 13 is connected to both the first communication module 11 and the second communication module 12. The main control unit is used to control the first communication module 11 to receive the first network signal and / or control the second communication module 12 to receive the second network signal according to the flight parameters of the flight equipment.

[0037] The dual modules of the airborne terminal need to work in different network modes respectively. Therefore, the airborne 5G transmission subsystem is divided into two subsystems, namely the airborne data sending subsystem (i.e., the airborne subsystem) and the ground-based data processing subsystem.

[0038] like Figure 2 As shown in the figure, the airborne data transmission subsystem is an airborne subsystem composed of an airborne 5G terminal (including an airborne 5G main module and an airborne 5G submodule), a 5G antenna (supporting two antenna solutions: dual modules sharing one antenna and independent antennas), and is responsible for sending airborne data to the 5G / ATG base station; the data processing subsystem composed of a data receiving-processing module and a data high-speed storage module is located on the ground side, and is used to receive airborne data sent from the 5G base station, integrate and store it after cyclic redundancy check (CRC), and then transmit it to the application server.

[0039] The primary function of the airborne 5G terminal (i.e., the airborne terminal) is to enable high-speed communication between the 5G base station and ground service equipment. Because it must support both standard 5G and 5G ATG wireless access protocols, the 5G communication module includes two distinct modules: a first communication module (also known as the primary module) 11 and a second communication module (also known as the secondary module) 12. First communication module 11 supports standard 5G protocols and the operator's mainstream frequency bands, and is used to receive signals from the first network. Second communication module 12 supports the 5G-ATG protocol and the 4.9 GHz frequency band, and is used to receive signals from the second network.

[0040] The first communication module 11 and the second communication module 12 are both connected to the main control unit 13 , and the main control unit 13 controls the opening and closing of the two communication modules according to the flight parameters of the flight equipment.

[0041] The first network signal is used for ground communications, such as the terrestrial 5G network, while the ATG network is used for in-flight access. When the aircraft is on the ground or at a low altitude, it can access the ground network through the first communication module. When the aircraft is at a higher altitude, it can access the ATG network through the second communication module.

[0042] When the first communication module 11 is turned on, the first communication module 11 can be controlled to receive the first network signal; when the second communication module 12 is turned on, the second communication module 12 can be controlled to receive the second network signal. When both communication modules are turned on, network signals from both networks can be received through both communication modules, or the communication module corresponding to the network with the better signal can be controlled to receive the network signal. For example, when the first network signal is better, the first network signal is received through the first communication module 11; when the second network signal is detected to be better, the second communication module 12 is switched to receive the second network signal, achieving rapid network switching.

[0043] Alternatively, as Figure 1 As shown, the main control unit 13 includes a main control board 131, which is connected to the first communication module 11 through a first connector 132 and to the second communication module 12 through a second connector 133. The main control board 131 is used to decide how to process data from the first communication module and the second communication module.

[0044] The main control board 131 of the main control unit 13 is connected to the first communication module 11 via a first connector (e.g., a board-to-board connector) 132, and to the second communication module 12 via a second connector (e.g., a board-to-board connector) 133. All input data (including data from the first and second communication modules) is processed by the main central processing unit (CPU) of the main control board 131, including whether to split the data and selecting the appropriate scenario for data transmission.

[0045] The main control board makes unified decision-making and processing on data, which facilitates data management and control of communication modules.

[0046] Alternatively, as Figure 1 As shown, the main control unit 13 further includes at least one of the following: an optical module 134 connected to the main control board 131 and configured to convert a received optical signal into a data format adapted to the first communication module 11 and / or the second communication module 12; The data storage unit 135 is connected to the main control board 131 and is used to store received data and / or data to be sent.

[0047] like Figure 1 As shown, the main control unit 13 also includes an optical module 134, which is connected to the main control board 131 and is also connected to the airborne data input interface 136. The optical module is used to receive the optical signal input by the airborne data input interface and convert the optical signal into data in a corresponding format so that the converted data can be received by the first communication module and the second communication module. The optical module 134 transmits the converted data to the main control board 131 for processing, for example, storage or transmission to the communication module.

[0048] The main control unit 13 may further include a data storage unit 135 for storing data to be sent and received. The data storage unit 135 is connected to the main control board 131, which is used to decide whether to store or send the received data.

[0049] When the signals of the first communication module 11 and the second communication module 12 are poor, the main control unit can be used to control data storage, thereby improving the flexibility of data processing.

[0050] Optionally, the main control unit 13 further includes a power management module 137, which is connected to the first communication module 11 through a first connector 132 and to the second communication module 12 through a second connector 133. Figure 3 As shown, the power management module 137 includes at least one of the following: Power filter module 1371; step-down module 1372; Surge protection module 1373; Anti-reverse polarity module 1374.

[0051] The power management module 137 is connected to the first communication module 11 through a first connector (such as a board-to-board connector), and is connected to the second communication module through a second connector (such as a board-to-board connector).

[0052] Since the power supply for airborne 5G terminals comes from the aircraft's aviation socket, it needs to meet hot-swap requirements and requires a reliable power protection module and a step-down module.

[0053] The power filter module 1371 , which may also be referred to as an aviation electromagnetic interference (EMI) / electromagnetic compatibility (EMC) module, is used for filtering.

[0054] The two step-down modules 1372, also known as aviation DCDC modules, are used to convert high voltage to low voltage.

[0055] Surge protection module 1373 is used for surge protection.

[0056] The anti-reverse connection module 1374 includes an anti-reverse connection diode for preventing reverse connection.

[0057] The power management module 137 is mainly used to filter and stabilize the DC36V airborne power supply from the external aviation socket, and convert it into a 4V voltage through the step-down module to supply the work required by the entire communication subsystem, thereby ensuring the high reliability of the power supply system of the entire machine.

[0058] Currently, the mainstream power output of civil aircraft includes 115VAC / 400Hz, which is filtered by the EMI module's filter circuit, converted to 36VDC power by the AD / DC module, and the voltage output of the AC / DC module is converted to 5~12VDC through the DC / DC module circuit.

[0059] For small aircraft, helicopters, drones, etc., a DC 36V system is generally used. In order to achieve stable and safe power supply under airborne power supply conditions and prevent damage to the equipment under surge conditions, the 36V DC power supply is directly stepped down and rectified to power the main and auxiliary modules.

[0060] Optionally, the airborne terminal further includes a first antenna 111, the first antenna 111 is connected to the first communication module 11 through the radio frequency conversion unit 14, and the first communication module 11 is used to receive the first network signal through the first antenna 111; The airborne terminal further includes a second antenna 121 . The second antenna 121 is connected to the second communication module 12 via the radio frequency conversion unit 14 . The second communication module 12 is configured to receive the second network signal via the second antenna 121 .

[0061] The airborne 5G terminal has network management capabilities, supports file transfer protocols, can resume downloads, supports online upgrades, and can report working status. The module is connected to the 5G network via a radio frequency cable and a 5G antenna to realize data transmission from the airborne device to the ground.

[0062] The airborne antenna includes a first antenna and a second antenna. The first antenna is connected to the first communication module via a radio frequency conversion unit, and the second antenna is connected to the second communication module via a radio frequency conversion unit.

[0063] When the main control unit 13 controls the first communication module 11 to turn on and receive signals, the first communication module 11 receives the first network signal through the first antenna 111; when the main control unit 13 controls the second communication module 12 to turn on and receive network signals, the second communication module 12 receives the second network signal through the second antenna 121.

[0064] The main control unit 13 can flexibly control the corresponding communication module to receive network signals through the antenna, which can improve the convenience and efficiency of operation and improve the stability of network connection.

[0065] Optionally, the first antenna 111 is an airborne omnidirectional antenna, and the second antenna 121 is an airborne phased array antenna.

[0066] Among them, the airborne omnidirectional antenna is generally in the form of a knife-shaped or disk-shaped antenna.

[0067] To ensure the flexibility of antenna arrangement, the remote first antenna (omnidirectional antenna) and the second antenna (phased array antenna) are designed to be backhauled to the two communication modules via optical fiber respectively. After backhaul, the optical fiber and radio frequency are converted through the radio frequency conversion unit (also called antenna switching unit) 14.

[0068] The first communication module 11 and the second communication module 12 of the airborne 5G are responsible for the transmission, reception and processing of corresponding radio frequency signals respectively. The main components include a signal processing modem, a multi-antenna radio frequency transceiver, an interface processing unit, a power module, etc.

[0069] like Figure 4As shown, the RF conversion unit 14 includes a RF interface, a fiber optic interface, a RF / optical switching matrix / RF-to-optical conversion module, and a power module (Power). The fiber optic interface is connected to the fiber optic interfaces of the phased array antenna and the omnidirectional antenna respectively. The RF-to-optical conversion module is responsible for converting the RF signal into an optical signal and transmitting it to the 5G ATG CPE for RF signal modulation and demodulation.

[0070] The schematic diagram of the cross-linking of the airborne antenna, antenna exchange unit, and airborne CPE unit is as follows: Figure 4 shown.

[0071] Optionally, the flying device is any one of an airplane, an electric vertical take-off and landing aircraft eVTOL, and a drone; The first antenna is respectively installed on the belly and / or the top of the flying device; The second antenna is installed on the belly of the flying device.

[0072] Among them, there are two first antennas (such as omnidirectional antennas) connected to the first communication module, and one second antenna (such as ATG dedicated phased array antenna) connected to the second communication module.

[0073] Take airplanes as an example, Figure 5 and Figure 6 As shown, Figure 5 (Bottom view of the aircraft) is a schematic diagram of the antenna distribution on the aircraft's belly. Figure 6 (Top view of the aircraft) is a schematic diagram of the antenna distribution on the back of the aircraft. The first antenna is installed at the belly and top of the aircraft (also called the back), and the first communication module is connected to the first antenna; Figure 5 As shown, the second antenna is installed on the belly of the aircraft, and the second communication module is connected to the second antenna.

[0074] The first communication module generally works on the ground (altitude 0) or at low altitude (for example, below 1000 meters). At low altitude, it is designed to work normally by receiving the 5G signal of the ground base station through the first antenna installed on the belly of the aircraft. When the aircraft lands on the ground (altitude 0), it is designed to work normally by receiving the 5G base station signal of the ground through the first antenna installed on the back of the aircraft.

[0075] The second communication module generally operates in high-altitude and high-speed scenarios, so the second antenna is designed to be installed on the belly of the aircraft to better receive the air signal coverage of the ground ATG base station and perform beamforming.

[0076] Antenna usage scenarios may include: Scenario 1: Ground and low altitude When the aircraft is on the ground (at 0 altitude) or at a low altitude (e.g., below 1000 meters), it can access the ground-based 5G network normally. In these situations, the main module (i.e., the first communication module) is used for data transmission. The main control unit can determine the aircraft's real-time status by receiving GPS altitude and information from the onboard bus data. At this time, the main module is activated. At low altitudes (e.g., 0-1000 meters), the main module uses the first antenna for data services. At 0 altitude, the data channel of the first antenna on the back of the aircraft is simultaneously activated, working in conjunction with the first antenna on the belly.

[0077] Scene 2: High-altitude scene When flying at high altitudes (for example, above 1,000 meters), civil aircraft typically fly at speeds exceeding 300 km / h. At altitudes above 1,000 meters, ground-based 5G network signals are cluttered, with no primary service cell. Ping-pong handovers are severe and prone to disconnections. Therefore, in this scenario, the main control unit shuts down the primary module (the first communication module) and activates the secondary module (the second communication module) for data connection. The secondary module uses the second antenna on the aircraft's belly to connect to the ATG network for data transmission.

[0078] The antenna distribution on the belly of the aircraft is as follows Figure 5 As shown, the antenna distribution on the back of the machine is as follows Figure 6 shown.

[0079] The cell selection and neighbor cell handover of the primary and secondary modules of the airborne terminal can be determined based on the measured Reference Signal Received Power (RSRP) level. When the airborne terminal is on the ground, it can access the network normally according to the normal cell selection and handover measurement strategy. When flying in the air, further optimization is required to adapt to the low-altitude and high-altitude wireless network environments. Specifically, it can be implemented according to the following strategies: 1. The main control unit determines the real-time flight altitude of the aircraft. When flying at low altitude (for example, less than or equal to 1000 meters), it switches the communication module according to the frequency cut-off threshold, starts the measurement threshold, and closes the measurement threshold; 2. At high altitudes (e.g., greater than 1000 meters), the main module is turned off, and the system enables the secondary module for data transmission, switching the communication module according to the above threshold.

[0080] In some optional implementations, the first communication module and the second communication module may also be connected to the BeiDou / Global Positioning System (GPS) respectively to obtain timing information to ensure time synchronization with the ground base station.

[0081] In some optional implementations, data is acquired through an airborne data interface, and GPS real-time information of the airborne bus is acquired through data analysis to obtain standard time, thereby achieving time synchronization with a ground base station.

[0082] Alternatively, as Figure 1 As shown, the airborne terminal further includes at least one of the following: At least one of a first power amplifier 112 and a second power amplifier 122 , wherein the RF conversion unit 14 is connected to the first communication module 11 via the first power amplifier 112 , and the RF conversion unit 14 is connected to the second communication module 12 via the second power amplifier 122 ; At least one of a first global positioning system GPS antenna 113 and a second GPS antenna 123 , wherein the first GPS antenna 113 is connected to the first communication module 11 , and the second GPS antenna 123 is connected to the second communication module 12 .

[0083] like Figure 1 As shown, the first communication module 11 can be connected to the RF conversion unit 14 through the first power amplifier 112, and the second communication module 12 can be connected to the RF conversion unit 14 through the second power amplifier 122 to improve the acquired signal strength.

[0084] Among them, the GPS antenna can also be replaced with a Beidou antenna.

[0085] Optionally, the main control unit 13 is used to control the first communication module 11 to turn on and receive the first network signal according to flight parameters of the flight equipment, and / or control the second communication module 12 to turn on and receive the second network signal.

[0086] Optionally, the flight parameters include at least one of flight speed and flight altitude.

[0087] The main control unit 13 controls the first communication module 11 to be turned on and off, and controls the second communication module 12 to be turned on and off according to parameters such as the flight speed and the flight altitude of the flight device.

[0088] For example, if the aircraft detects a low altitude and slow speed, the first communication module can be activated to receive the first network signal through the first communication module. If the aircraft detects a high altitude and fast speed, the first communication module can be deactivated and the second communication module activated to receive the second network signal through the second communication module. When switching from the first communication module to the second communication module, the signal quality of the networks connected to the two communication modules can be obtained to switch, achieving seamless network switching and improving the stability of the network connection.

[0089] The 5G airborne terminal of the present application includes a main control unit 13, a 5G main module (i.e., a first communication module) 11, a 5G sub-module (i.e., a second communication module) 12, a power management module, and an LED indicator light. The power management module and the communication module of the main control unit are respectively connected and communicated with the 5G main module and the 5G sub-module through board-to-board connectors.

[0090] Among them, the main control unit 13 integrates a data receiving unit, a 5G communication module, a data transfer unit and part of the IO control circuit; the power management module includes a power protection filter module and a power step-down module.

[0091] The 5G main module communicates with the outside world through the board connector and receives the business data stream diverted from the main control board. The 5G main module is also connected to the power module board through the board-to-board connector. While receiving the input power, it provides some interface signals to the power module board and the sub-module.

[0092] The external interface of the power management module is a 32-pin aviation socket, which is used to receive an external 36V DC input voltage and perform a step-down conversion. Internally, it is connected to the main module and sub-module through a board-to-board connector, providing the required working power.

[0093] The 5G submodule is connected to the power management module through a board-to-board connector to receive input voltage and bus signals.

[0094] The airborne terminal utilizes a dual 5G module solution. The front end connects to the onboard avionics bus or other data source servers or switches for data input. To simplify air interface design and reduce the difficulty of onboard antenna modification, the wireless side uses a shared antenna via an RF combiner. If the system operates only in the 4.9GHz frequency band, the two modules share a single antenna via an RF combiner. The control unit switches between the primary and secondary modules. If the two modules operate at different frequencies, they each transmit and receive wirelessly via independent antennas, with the master control unit controlling the module's operating channel.

[0095] See also Figure 7 , Figure 7 The present application provides a network connection method, which is applied to an airborne terminal as described in any of the above embodiments, wherein the airborne terminal includes a first communication module, a second communication module, and a main control unit, wherein the first communication module is used to receive a first network signal, and the second communication module is used to receive a second network signal; the method includes: Step 701: Obtain flight parameters of the flight equipment through the main control unit; Step 702: When the flight parameter is within a first parameter range, control the first communication module to be in an on state, and control the second communication module to be in an off state; Step 703: When the flight parameter is within a second parameter range, control the first communication module and the second communication module to be in an on state; Step 704: When the flight parameter is within a third parameter range, control the first communication module to be in an off state, and control the second communication module to be in an on state.

[0096] Among them, the airborne terminal includes a first communication module and a second communication module. The main control unit obtains the flight parameters of the flight equipment (such as an aircraft, a drone, etc.) and controls the opening and closing of the first communication module and the second communication module based on the flight parameters.

[0097] The software design of the main control unit and the operating system can adopt the embedded LINUX system. The business system includes: (1) Data processing unit It provides data input and format conversion processing functions for various onboard input interfaces, including the digital information transmission system ARNIC429, the Controller Area Network (CAN) bus, ARNIC664 and other bus data interfaces.

[0098] (2) Logical processing unit The control module logically determines and selects the communication channel, selecting the optimal communication network for data transmission based on flight parameters (including altitude (for example, a threshold of 1000 meters), speed (for example, a threshold of 500 km / h), and the wireless channel quality of both communication modules. If both standard 5G and 5G ATG networks are unavailable, data is cached and prioritized. Once the network is restored, data is sent based on the priority order.

[0099] (3) Management unit Provides external management interfaces and management interfaces to implement functions such as configuration of the two communication modules, modification and reset of business logic, and over-the-air (OTA) firmware upgrades.

[0100] (4) Data conversion processing unit Responsible for converting the airborne bus data into a unified format, and sending the converted data to the main control board and logic processing unit for corresponding storage and application.

[0101] In order to improve the network connection efficiency of the dual-mode module and make it work in the appropriate network mode, a network connection and data processing workflow is adopted. The main control board is used as the control unit as a whole, and a better network is intelligently selected for connection according to the network connection status to improve its network connection efficiency.

[0102] (5) Dual-module workflow First, after the system is started, the main control unit obtains the real-time flight parameters of the aircraft from the aircraft bus, initializes the first communication module and the second communication module, and obtains network connection status information. The main control unit determines which network channel to use for data transmission based on the flight parameters and network connection status information.

[0103] The flight parameters may include flight speed, flight altitude, and other parameters that affect network signals. The first network signal is a network signal of a network used for ground communication, and the second network signal is a network signal of an air-to-ground (ATG) network.

[0104] When the flight parameters are within the first parameter range (for example, the altitude is 0 or a low altitude range), the altitude of the flight device is relatively low, and the first communication module is turned on to connect to the 5G network. The device may be in flight or stopped state.

[0105] When the flight parameters are within the second parameter range (for example, the flight altitude is low and the speed is slow), the first communication module and the second communication module are turned on.

[0106] When the flight parameters are within the third parameter range (for example, the flight altitude is high and the speed is fast), the first communication module is turned off and the second communication module remains turned on.

[0107] For example, as an airplane takes off from the ground, the main control unit acquires the aircraft's flight parameters. When the aircraft is at a low altitude, only the first communication module is activated to connect to the 5G network. As the altitude gradually increases, the second communication module is activated simultaneously, and both communication modules remain activated. At higher altitudes or faster speeds, the first communication module is deactivated and the second communication module is activated, connecting to the ATG network.

[0108] The main control unit controls the opening and closing of the first communication module and the second communication module according to the flight parameters, so that the flight equipment can connect to the corresponding network under the flight parameter conditions, and switch the network when the flight parameters change, thereby improving the continuity and stability of the network connection.

[0109] Optionally, the flight parameter includes at least one of a flight altitude and a flight speed; The first parameter range is: the flight altitude is 0, and the flight speed is less than the first speed; The second parameter range is: the flight altitude is greater than 0 and less than the first altitude, and the flight speed is less than the first speed; The third parameter range is: the flight speed is greater than the first speed and / or the flight altitude is greater than the first altitude.

[0110] The first speed is, for example, 500 km / h; and the first altitude is, for example, 1000 meters.

[0111] The main control unit obtains the flight parameter information of the flight device and controls the opening and closing status of the two modules based on the flight parameters.

[0112] For ease of understanding, specific implementation methods are given below as examples.

[0113] For example, Figure 8 As shown, the main control unit obtains the aircraft bus status parameters (i.e., flight parameters), and the main and auxiliary modules initialize and obtain network access information. The main control unit determines the network to be activated based on the flight parameters.

[0114] When the flight speed of the aircraft is less than 500 km / h and the flight altitude is less than 1000 meters, if the first communication module (i.e., the main module) is connected to the network, the data transmission channel of the main module is activated, and the system performs data communication services through the first communication module.

[0115] In addition, when the first communication module is turned on, the second communication module (also called the slave module) can also be started at the same time to perform data diversion (without affecting the data transmission of the first communication module), that is, the main and slave modules transmit data at the same time, thereby improving the system wireless throughput.

[0116] When the flight speed of the aircraft is greater than 500 km / h or the flight altitude is greater than 1000 meters, if the second communication module (i.e., the secondary module) is connected to the ATG network, the data transmission channel of the secondary module is activated and data communication services are carried out through the second communication module.

[0117] Optionally, the method further includes: When the first communication module is in an on state, detecting a first signal quality parameter of a first network signal received by the first communication module, and switching the first communication module to the second communication module based on the first signal quality parameter and a signal parameter threshold of the first communication module; and / or, When the second communication module is in the turned-on state, a second signal quality parameter of a second network signal received by the second communication module is detected, and the second communication module is switched to the first communication module according to the second signal quality parameter and a signal parameter threshold of the second communication module.

[0118] When the aircraft is in flight (including ascending from takeoff altitude and descending from landing altitude), the communication module of the airborne terminal can be in the following states: The first communication module is in an on state, and the second communication module is in a off state; The first communication module and the second communication module are both in an on state; The first communication module is in a closed state, and the second communication module is in an open state.

[0119] When the first communication module or the second communication module is in the turned-on state, in order to obtain a better network, the main control unit switches the network connection between the two communication modules according to RSRP (i.e., the first signal quality parameter) and the signal parameter threshold (including at least one of the start measurement threshold, the frequency cut-off threshold, and the shutdown measurement threshold).

[0120] The following two specific application scenarios are used as examples.

[0121] Scenario 1: When the flight altitude is lower than the first altitude, network switching is performed for the first communication module and the second communication module: When the first communication module is used for data transmission, if the RSRP corresponding to the first communication module reaches the measurement start threshold, the measurement of the RSRP corresponding to the second communication module is started.

[0122] If the RSRP corresponding to the first communication module reaches the frequency cut-off threshold, the first communication module is switched to the second communication module, that is, the second communication module is used for network transmission; if the RSRP corresponding to the first communication module reaches the measurement shutdown threshold, the measurement of the RSRP corresponding to the second communication module is closed.

[0123] Among them, the first communication module takes frequency bands N41 and N28 as an example. The frequency cut-off threshold of frequency band N41 is: -97dBm, the start measurement threshold is: -92dBm, and the shut-down measurement threshold is: -87dBm. The frequency cut-off threshold of frequency band N28 is: -93dBm, the start measurement threshold is: -90dBm, and the shut-down measurement threshold is -88dBm.

[0124] When the second communication module is used for network transmission, if the RSRP of the second communication module reaches the start measurement threshold, the RSRP measurement of the first communication module is started. If the RSRP of the first communication module reaches the frequency cut-off threshold, the second communication module is switched to the first communication module, that is, the first communication module is used for network transmission. If the RSRP of the first communication module reaches the shut-off measurement threshold, the RSRP measurement is shut down.

[0125] Among them, the second communication module takes frequency band N79 as an example: frequency cut-off threshold: -99dbm, start measurement threshold: -94dbm, shut down measurement threshold: -89dbm, same-frequency switching threshold: 3db.

[0126] Scenario 2: When the flight altitude is greater than the first altitude, the first communication module is turned off and the second communication module is enabled for data transmission. The specific implementation method can be found in the above description.

[0127] Among them, the second communication module takes frequency band N79 as an example: frequency cut-off threshold: -99dbm, start measurement threshold: -94dbm, shut down measurement threshold: -89dbm, same-frequency switching threshold: 3db.

[0128] With the rapid development of the low-altitude economy and the demand for high-altitude Internet in commercial flights and general aviation, the demand for 5G network access for aircraft at altitudes from 0 to 12,000 meters is increasing accordingly. The scale of onboard 5G modules in electric vertical take-off and landing aircraft (eVTOL), drones, manned general aviation aircraft, and commercial airliners is gradually increasing. However, the continuity and stability of the network connection of the current ground standard 5G network and the supporting commercial 5G modules cannot meet the network connection needs.

[0129] In order to meet the flight altitude of aircraft from 0 meters above the ground to a maximum of 12,000 meters, and also support a maximum flight speed of 1,200 km / h, this application adopts a dual module, and the main control unit controls the opening and closing status of the main and sub modules according to the flight parameters of the flight equipment, which can improve the continuity and stability of the network connection.

[0130] See also Figure 9 , Figure 9 This is a schematic diagram of the structure of a network connection device provided in an embodiment of the present application. Figure 9 As shown, the airborne terminal is applied to any of the above embodiments, the airborne terminal includes a first communication module, a second communication module and a main control unit, the first communication module is used to receive a first network signal, and the second communication module is used to receive a second network signal; the network connection device 900 includes: An acquisition module 901 is configured to acquire flight parameters of the flight equipment through the main control unit; A first control module 902 is configured to control the first communication module to be in an on state and control the second communication module to be in an off state when the flight parameter is within a first parameter range; A second control module 903 is configured to control the first communication module and the second communication module to be in an on state when the flight parameter is within a second parameter range; The third control module 904 is configured to control the first communication module to be in an off state and control the second communication module to be in an on state when the flight parameter is within a third parameter range.

[0131] Optionally, the flight parameter includes at least one of a flight altitude and a flight speed; The first parameter range is: the flight altitude is 0, and the flight speed is less than the first speed; The second parameter range is: the flight altitude is greater than 0 and less than the first altitude, and the flight speed is less than the first speed; The third parameter range is: the flight speed is greater than the first speed and / or the flight altitude is greater than the first altitude.

[0132] Optionally, the device further comprises: a first switching module, configured to detect a first signal quality parameter of a first network signal received by the first communication module, and switch the first communication module to the second communication module based on the first signal quality parameter and a signal parameter threshold of the first communication module; and / or The second switching module is configured to detect a second signal quality parameter of a second network signal received by the second communication module, and switch the second communication module to the first communication module according to the second signal quality parameter and a signal parameter threshold of the second communication module.

[0133] Network connection device can achieve Figure 7 The various processes implemented in the method embodiment can achieve the same technical effect, and to avoid repetition, they will not be described here.

[0134] It should be noted that the electronic device provided in the embodiment of the present application is a device capable of executing the above-mentioned network connection method. Therefore, all implementation methods in the above-mentioned network connection method embodiment are applicable to the electronic device and can achieve the same or similar beneficial effects. To avoid repetition, this embodiment will not be described in detail.

[0135] The embodiment of the present application also provides an electronic device. Since the principle of solving the problem by the electronic device is similar to the network connection method in the embodiment of the present application, the implementation of the electronic device can refer to the implementation of the method, and the repeated parts will not be repeated. Figure 10 As shown, the electronic device of the embodiment of the present application includes: a processor 500, which is used to read the program in the memory 520 and execute the following process: Acquiring flight parameters of the flight equipment through the main control unit; When the flight parameter is within a first parameter range, controlling the first communication module to be in an on state and controlling the second communication module to be in an off state; When the flight parameter is within a second parameter range, controlling the first communication module and the second communication module to be in an on state; When the flight parameter is within a third parameter range, the first communication module is controlled to be in an off state, and the second communication module is controlled to be in an on state. The transceiver 510 is configured to receive and send data under the control of the processor 500 .

[0136] Among them, Figure 10 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 510 may be a plurality of components, i.e., a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 when performing operations.

[0137] Optionally, the flight parameter includes at least one of a flight altitude and a flight speed; The first parameter range is: the flight altitude is 0, and the flight speed is less than the first speed; The second parameter range is: the flight altitude is greater than 0 and less than the first altitude, and the flight speed is less than the first speed; The third parameter range is: the flight speed is greater than the first speed and / or the flight altitude is greater than the first altitude.

[0138] Optionally, the processor 500 is further configured to read a program in the memory 520 and execute the following steps: detecting a first signal quality parameter of a first network signal received by the first communication module, and switching the first communication module to the second communication module based on the first signal quality parameter and a signal parameter threshold of the first communication module; and / or, Detecting a second signal quality parameter of a second network signal received by the second communication module, and switching the second communication module to the first communication module according to the second signal quality parameter and a signal parameter threshold of the second communication module.

[0139] The electronic device provided in the embodiment of the present application can execute the above method embodiment, and its implementation principle and technical effects are similar, which will not be repeated in this embodiment.

[0140] The present application also provides a computer-readable storage medium having a computer program stored thereon. When executed by a processor, the computer program implements the various processes of the aforementioned network connection method embodiment and achieves the same technical effects. To avoid repetition, the details are not described here. The computer-readable storage medium may be, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0141] The present application also provides a computer program product including computer instructions, which, when executed by a processor, implement the above Figure 7 The various processes of the method embodiment shown can achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0142] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0143] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a more preferred embodiment. Based on this understanding, the technical solution of this application, or the part that contributes to the existing technology, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of this application.

[0144] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An airborne terminal, characterized in that: include: a first communication module, configured to receive a first network signal, wherein the first network signal is a network signal of a network used for terrestrial communication; A second communication module is configured to receive a second network signal, where the second network signal is a network signal of an air-to-ground (ATG) network; A main control unit is connected to both the first communication module and the second communication module. The main control unit is used to control the first communication module to receive the first network signal and / or control the second communication module to receive the second network signal according to the flight parameters of the flight equipment.

2. The airborne terminal according to claim 1, wherein: The main control unit includes a main control board, which is connected to the first communication module through a first connector and to the second communication module through a second connector. The main control board is used to decide how to process data from the first communication module and the second communication module.

3. The airborne terminal according to claim 2, characterized in that The main control unit further includes at least one of the following: an optical module, connected to the main control board, and configured to convert a received optical signal into a data format adapted to the first communication module and / or the second communication module; The data storage unit is connected to the main control board and is used to store received data and / or data to be sent.

4. The airborne terminal according to claim 1, wherein: The main control unit further includes a power management module, which is connected to the first communication module via a first connector and to the second communication module via a second connector. The power management module includes at least one of the following: Power filter module; Step-down module; Surge protection module; Anti-reverse polarity module.

5. The airborne terminal according to any one of claims 1 to 4, characterized in that: The airborne terminal further includes a first antenna, the first antenna being connected to the first communication module via a radio frequency conversion unit, and the first communication module being configured to receive the first network signal via the first antenna; The airborne terminal further includes a second antenna, which is connected to the second communication module through the radio frequency conversion unit, and the second communication module is used to receive the second network signal through the second antenna.

6. The airborne terminal according to claim 5, characterized in that: The first antenna is an airborne omnidirectional antenna, and the second antenna is an airborne phased array antenna.

7. The airborne terminal according to claim 5, characterized in that: The flying device is any one of an airplane, an electric vertical take-off and landing aircraft eVTOL, and a drone; The first antenna is respectively installed on the belly and / or the top of the flying device; The second antenna is installed on the belly of the flying device.

8. The airborne terminal according to claim 5, characterized in that: The airborne terminal further includes at least one of the following: At least one of a first power amplifier and a second power amplifier, the radio frequency conversion unit is connected to the first communication module via the first power amplifier, and / or the radio frequency conversion unit is connected to the second communication module via the second power amplifier; At least one of a first global positioning system (GPS) antenna and a second GPS antenna, wherein the first GPS antenna is connected to the first communication module, and the second GPS antenna is connected to the second communication module.

9. The airborne terminal according to claim 1, wherein: The main control unit is used to control the first communication module to turn on and receive the first network signal according to the flight parameters of the flight equipment, and / or control the second communication module to turn on and receive the second network signal.

10. The airborne terminal according to claim 1 or 9, characterized in that: The flight parameters include at least one of a flight speed and a flight altitude.

11. A network connection method, characterized in that: Applied to an airborne terminal according to any one of claims 1 to 10, the airborne terminal comprising a first communication module, a second communication module, and a main control unit, the first communication module being configured to receive a first network signal, and the second communication module being configured to receive a second network signal; the method comprising: Acquiring flight parameters of the flight equipment through the main control unit; When the flight parameter is within a first parameter range, controlling the first communication module to be in an on state and controlling the second communication module to be in an off state; When the flight parameter is within a second parameter range, controlling the first communication module and the second communication module to be in an on state; When the flight parameter is within a third parameter range, the first communication module is controlled to be in an off state, and the second communication module is controlled to be in an on state.

12. The method according to claim 11, characterized in that The flight parameter includes at least one of a flight altitude and a flight speed; The first parameter range is: the flight altitude is 0, and the flight speed is less than the first speed; The second parameter range is: the flight altitude is greater than 0 and less than the first altitude, and the flight speed is less than the first speed; The third parameter range is: the flight speed is greater than the first speed and / or the flight altitude is greater than the first altitude.

13. The method according to claim 11 or 12, characterized in that The method further comprises: When the first communication module is in an on state, detecting a first signal quality parameter of a first network signal received by the first communication module, and switching the first communication module to the second communication module based on the first signal quality parameter and a signal parameter threshold of the first communication module; and / or, When the second communication module is in the turned-on state, a second signal quality parameter of a second network signal received by the second communication module is detected, and the second communication module is switched to the first communication module according to the second signal quality parameter and a signal parameter threshold of the second communication module.

14. A network connection device, characterized in that: Applied to an airborne terminal according to any one of claims 1 to 10, the airborne terminal comprising a first communication module, a second communication module, and a main control unit, the first communication module being configured to receive a first network signal, and the second communication module being configured to receive a second network signal; the device comprising: An acquisition module, configured to acquire flight parameters of the flight equipment through the main control unit; a first control module, configured to control the first communication module to be in an on state and control the second communication module to be in an off state when the flight parameter is within a first parameter range; a second control module, configured to control the first communication module and the second communication module to be in an on state when the flight parameter is within a second parameter range; The third control module is configured to control the first communication module to be in an off state and control the second communication module to be in an on state when the flight parameter is within a third parameter range.

15. An electronic device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the network connection method according to any one of claims 11 to 13 are implemented.

16. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the network connection method according to any one of claims 11 to 13.

17. A computer program product, characterized in that The method comprises computer instructions, which, when executed by a processor, implement the steps of the network connection method according to any one of claims 11 to 13.

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