CN115706601A - Transmission control method and related device in satellite communication system - Google Patents

Abstract

A transmission control method and related apparatus in a satellite communication system. The terminal can determine the target satellite with the strongest signal from at least one synchronous orbit satellite through satellite selection. The terminal can determine the direction of the satellite transmission link based on the position information of the terminal and the position information of the target satellite. The terminal can also determine the radiation direction of the satellite antenna in the terminal based on geomagnetic data, attitude data and the like of the terminal. Then, the terminal can transmit the link direction through the satellite and the radiation direction of the satellite antenna, so that the radiation direction of the satellite antenna of the terminal is aligned with the target satellite. The terminal may transmit the first data packet to the target satellite along a radiation direction of the satellite antenna after being aligned with the target satellite. Therefore, under the condition of not depending on an external device, a user can aim the radiation direction of the satellite antenna of the terminal at the target satellite, the communication performance between the terminal and the target satellite is enhanced, and the satellite selection and satellite aiming operations of the user are simplified.

Description

Transmission control method and related device in a satellite communication system

technical field

The present application relates to the technical field of terminals and satellite communications, and in particular to a transmission control method and related devices in a satellite communications system.

Background technique

Beidou short message communication service is one of the characteristics of Beidou satellite navigation system that distinguishes it from other global positioning and navigation systems such as the global positioning system (GPS) of the United States and the global navigation satellite system (GLONASS) of Russia. , especially suitable for positioning and communication in areas such as oceans, deserts, grasslands, uninhabited areas, etc. that are not covered by mobile communications, or cannot be covered, or where the communication system is destroyed. The communication system of the Beidou short message service upgrades the technical system and realizes the separation of military and civilian signals. At present, under the premise of ensuring that the military needs are fully met, some necessary resources of the communication system of the Beidou short message service are also opened to civilian use. According to the characteristics of the civilian service and equipment, it is necessary to design according to the characteristics of the communication system of the Beidou short message service. letter of agreement. Among them, the communication system of the Beidou short message service is hereinafter referred to as the Beidou communication system.

Currently, the steps for the terminal to search for satellites through a global navigation satellite system (GNSS) may include: firstly, the terminal may perform base station positioning through a communication chip to obtain a rough geographic location. The rough geographic location is then sent to the base station. The base station can query the corresponding navigation message based on the received geographic location, obtain the precise geographic location of the terminal, and obtain the corresponding visible satellite ephemeris (valid time is about 4 hours) according to the precise geographic location. After that, the base station sends the visible satellite ephemeris file to the terminal. The terminal searches for stars in a targeted manner according to the accurate ephemeris file. However, since the terminal usually uses geostationary orbit satellites for communication without a network, the terminal cannot obtain accurate ephemeris files through the base station, so the current method of finding stars is not applicable in the satellite communication system.

At present, the terminal mainly relies on external devices (such as mechanical brackets) or external equipment measurements to adjust the antenna attitude, so that the radiation direction of the satellite antenna is aligned with the target satellite, and the performance of satellite communication is improved. Or the terminal can improve the performance of satellite communication by upgrading its own hardware. In this way, the cost, volume, power consumption and other aspects are expensive, and it is not suitable for small handheld mobile devices such as mobile phones.

Contents of the invention

The present application provides a transmission control method and a related device in a satellite communication system. The terminal can determine the target satellite with the strongest signal from at least one geostationary orbit satellite through star selection. The terminal can determine the direction of the satellite transmission link based on the location information of the terminal (for example, the latitude and longitude of the terminal) and the location information of the target satellite (for example, the latitude and longitude of the beam center of the target satellite, and the height of the target satellite). The terminal may also determine the radiation direction of the satellite antenna in the terminal based on the geomagnetic data and attitude data of the terminal. Then, the terminal can transmit the link direction and the radiation direction of the satellite antenna through the satellite, so that the radiation direction of the satellite antenna of the terminal is aligned with the target satellite. After aligning with the target satellite, the terminal may send the first data packet to the target satellite along the radiation direction of the satellite antenna. In this way, without relying on external devices, the user can align the radiation direction of the satellite antenna of the terminal to the target satellite, which enhances the communication performance between the terminal and the target satellite, and simplifies the user's operation of selecting and aligning satellites.

In a first aspect, the present application provides a transmission control method in a satellite communication system, including: the terminal displays a first interface, the first interface includes selected target satellites among multiple geostationary orbit GEO satellites and the radiation direction of the satellite antenna in the terminal The pitch angle deviation and the azimuth angle deviation between the direction of the satellite transmission link; where, the direction of the satellite transmission link is the direction from the position of the terminal to the position of the target satellite;

The terminal receives a first input for adjusting the posture of the terminal;

When the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, the terminal sends the first data packet to the target satellite.

Through the method provided in this application, the user can be prompted how to align the radiation direction of the satellite antenna to the target satellite. It simplifies the user's satellite selection and satellite operations, and improves the communication quality between the terminal and the target satellite.

In a possible implementation, before the terminal displays the first interface, the method further includes: the terminal displays a second interface, and the second interface displays a plurality of geostationary orbit satellites; when the terminal determines the target from the plurality of geosynchronous orbit satellites After the satellite is selected, the terminal displays the first mark, which is used to indicate that the target satellite has been selected.

In a possible implementation, the service type of the first data packet is a message communication service; before the terminal displays the first interface, the method further includes: the terminal displays a third interface, and the third interface includes the first message input by the user Content and the first sending control; wherein, the first data packet includes the first message content; the terminal receives the second input for the first sending control;

Displaying the first interface by the terminal specifically includes: displaying the first interface by the terminal in response to the first input.

In a possible implementation, the service type of the first data packet is a message communication service; before the terminal displays the second interface, the method further includes: the terminal displays a third interface, and the third interface includes the first message input by the user Content and the first sending control; wherein, the first data packet includes the first message content; the terminal receives the second input for the first sending control;

Displaying the second interface by the terminal specifically includes: displaying the second interface by the terminal in response to the second input.

In a possible implementation manner, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal receives the first application layer receipt;

When the first application layer receipt is used to indicate that the first data packet is successfully received, the terminal displays success prompt information, and the success prompt information is used to prompt the user that the first data packet is successfully sent.

When the first application layer receipt is used to indicate that the first data packet fails to be received, the terminal displays failure prompt information, and the failure prompt information is used to prompt the user that the first data packet fails to be sent.

In a possible implementation, the service type of the first application layer message is a letter message download service; before the terminal displays the first interface, the method further includes: the terminal displays a fourth interface, and the fourth interface includes the first receiving control ; The terminal receives a third input for the first receiving control;

Displaying the first interface by the terminal specifically includes: displaying the first interface by the terminal in response to the third input.

In a possible implementation, the service type of the first application layer message is a letter message download service; before the terminal displays the second interface, the method further includes: the terminal displays a fourth interface, and the fourth interface includes the first receiving control ; The terminal receives a third input for the first receiving control;

Displaying the second interface by the terminal specifically includes: displaying the second interface by the terminal in response to the third input.

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal receives a second data packet, the second data packet includes a second message content, and the second message content is other user equipment The content of the short message sent to the terminal through the target satellite; the terminal displays the content of the second message.

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: when the terminal does not receive the second data packet within the preset time threshold, the terminal displays request failure prompt information, and the request fails The prompt information is used to prompt the user that the sending of the first data packet fails.

In a possible implementation, the service type of the first application layer message is a mailbox profile query service; before the terminal displays the first interface, the method further includes: the terminal displays a fifth interface, and the fifth interface includes the first query control ; The terminal receives a fourth input for the first query control;

Displaying the first interface by the terminal specifically includes: displaying the first interface by the terminal in response to the fourth input.

In a possible implementation, the service type of the first application layer message is a mailbox profile query service; before the terminal displays the second interface, the method further includes: the terminal displays a fifth interface, and the fifth interface includes the first query control ; The terminal receives a fourth input for the first query control;

Displaying the second interface by the terminal specifically includes: displaying the second interface by the terminal in response to the fourth input.

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal receives a third data packet, and the third data packet includes short messages sent to the terminal by other user equipment through the target satellite. quantity information.

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: when the terminal does not receive the third data packet within the preset time threshold, the terminal displays a query failure prompt message, and the query fails The prompt information is used to prompt the user that the sending of the first data packet fails.

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal sends a fourth data packet to the target satellite, where the service type of the fourth data packet is a mail message download service.

In a possible implementation manner, after the terminal sends the fourth data packet to the target satellite, the method further includes: the terminal receives a second data packet, the second data packet includes a second message content, and the second message content is other user equipment The content of the short message sent to the terminal through the target satellite; the terminal displays the content of the second message.

In a possible implementation manner, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal displays sending prompt information, and the sending prompt information is used to remind the user that the terminal has sent the first data packet to the target satellite.

In a possible implementation, when the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, the method further includes: the terminal displays accurate prompt information, and the accurate prompt information is used to remind the user that the radiation direction of the satellite antenna in the terminal is aligned with the target satellite. quasi-target satellite.

In a possible implementation manner, the target satellite is the satellite with the strongest signal strength determined by the terminal from the multiple geostationary orbit satellites.

In a possible implementation manner, the target satellite is the satellite with the closest beam center distance among the multiple geostationary orbit satellites, and the beam center distance is obtained by the terminal based on the longitude and latitude coordinates of the terminal and the longitude and latitude coordinates of the beam center of the geosynchronous orbit satellite.

In a possible implementation manner, the target satellite is a first historical satellite, and the first historical satellite is a historical satellite corresponding to a first historical location closest to a current location of the terminal in a database of the terminal.

In a possible implementation manner, the target satellite is a geostationary satellite with the closest European distance to the terminal.

In a possible implementation, the pitch angle deviation is the difference between the pitch angle in the radiation direction of the satellite antenna and the pitch angle in the satellite transmission link direction in the ground coordinate system, and the azimuth angle deviation is in the ground coordinate system, The difference between the azimuth angle of the radiation direction of the satellite antenna and the azimuth angle of the satellite transmission link direction.

In a possible implementation manner, the azimuth and elevation angles of the satellite transmission link direction are obtained by the terminal based on the location information of the terminal and the location information of the target satellite.

In a possible implementation manner, the azimuth of the radiation direction of the satellite antenna is determined by the azimuth and azimuth angle offset of the terminal based on the reference direction of the terminal, and the elevation angle of the radiation direction of the satellite antenna is determined by the terminal based on the reference direction of the terminal. The pitch angle and pitch angle offset of the direction are determined; the azimuth offset is determined by the terminal based on the azimuth angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system and the azimuth angle of the terminal's reference direction in the ground coordinate system , the pitch angle offset is determined by the terminal based on the pitch angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system and the pitch angle of the reference direction of the terminal in the ground coordinate system.

In a possible implementation, the azimuth and elevation angle of the terminal's reference direction in the ground coordinate system are the terminal's azimuth and elevation angle in the geomagnetic coordinate system based on the terminal's reference direction and the geomagnetic coordinate system and the ground coordinate system The magnetic declination angle is determined; wherein, the pitch angle and azimuth angle of the reference direction of the terminal in the geomagnetic coordinate system are determined by the terminal based on the geomagnetic data and attitude data of the terminal.

In a possible implementation manner, when the terminal determines that the radiation direction of the satellite antenna is not aimed at the target satellite, the method further includes:

The terminal displays deviation prompt information, and the deviation prompt information is used to prompt the user to adjust the attitude of the terminal so that the radiation direction of the satellite antenna in the terminal is aligned with the target satellite.

In a possible implementation manner, the terminal determines that the radiation direction of the satellite antenna is not aligned with the target satellite, which specifically includes: when the terminal determines that the azimuth angle deviation is greater than the first threshold or the elevation angle deviation is greater than the second threshold, the terminal determines that The radiation direction of the satellite dish is not aimed at the target satellite.

In a possible implementation manner, the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, which specifically includes: when the azimuth angle deviation is less than or equal to the first threshold and the elevation angle deviation is less than or equal to the second threshold, the terminal determines that The radiation direction of the satellite antenna is aimed at the target satellite.

In a second aspect, the present application provides a terminal, including one or more processors, one or more memories, and a transceiver. The transceiver, the one or more memories are coupled to the one or more processors, the one or more memories are used to store computer program codes, the computer program codes include computer instructions, and when the one or more processors execute the computer instructions, the The terminal executes the method in any possible implementation manner of the foregoing first aspect.

In a third aspect, the present application provides a computer storage medium, including computer instructions. When the computer instructions are run on a terminal, the terminal is made to execute the method in any possible implementation manner of the first aspect above.

In a fourth aspect, the present application provides a computer program product, which, when the computer program product is run on a computer, causes the computer to execute the method in any possible implementation manner of the above first aspect.

In the fifth aspect, the present application provides a chip or a chip system applied to a terminal, including a processing circuit and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processing circuit, and the processing circuit is used to run the code instructions To execute the method in any possible implementation manner of the first aspect above.

Description of drawings

FIG. 1 is a schematic structural diagram of a satellite communication system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a hardware structure provided by an embodiment of the present application;

3A-3K are schematic diagrams of a set of interfaces provided by the embodiment of the present application;

Fig. 4A-Fig. 4D are another set of interface diagrams provided by the embodiment of the present application;

Fig. 5 is a schematic diagram of a deviation interface provided by the embodiment of the present application;

Fig. 6 is a schematic diagram of a magnetic field calibration interface provided by the embodiment of the present application;

7A-7B are schematic diagrams of a set of magnetic field calibration interfaces provided by the embodiment of the present application;

FIG. 8 is a schematic flowchart of a transmission control method in a satellite communication system provided by an embodiment of the present application;

9 is a schematic diagram of the azimuth and elevation angles of the satellite transmission link direction in ground coordinates provided by the embodiment of the present application;

FIG. 10 is a schematic diagram of the azimuth and elevation angles of the reference direction of the terminal 100 in geomagnetic coordinates according to an embodiment of the present application;

FIG. 11 is a schematic diagram of the azimuth and pitch angles of the reference direction of the terminal 100 in a geomagnetic coordinate system and a ground coordinate system provided by an embodiment of the present application;

12A-12B are schematic diagrams of a magnetic declination angle provided by the embodiment of the present application;

FIG. 13 is a schematic diagram of a terminal spherical coordinate system provided by an embodiment of the present application;

FIG. 14 is a schematic flowchart of a transmission control method in a satellite communication system provided by an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 16 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 18 is a schematic structural diagram of another communication device provided by an embodiment of the present application.

Detailed ways

The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also Plural expressions are included unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in this application refers to and includes any and all possible combinations of one or more of the listed items.

Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as implying or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present application, unless otherwise specified, the "multiple" The meaning is two or more.

Embodiments of the present application provide a transmission control method and a related device in a satellite communication system. Based on the transmission control method (also referred to as the transmission control method) in the satellite communication system provided by this application, the terminal 100 can determine the The satellite with the strongest signal may be called the target satellite. Wherein, the process of determining the target satellite by the terminal 100 is satellite selection.

After determining the target satellite, the terminal 100 may determine the direction of the satellite transmission link when the terminal 100 communicates with the target satellite based on the location information of the terminal 100 and the location information of the target satellite. The satellite transmission link direction is the direction from the location of the terminal 100 to the location of the target satellite, and the terminal 100 can also determine the radiation direction of the satellite antenna of the terminal 100 based on the geomagnetic data and attitude data of the terminal 100. Then, the terminal 100 may transmit the link direction of the satellite and the radiation direction of the satellite antenna, so that the radiation direction of the satellite antenna of the terminal 100 is aligned with the target satellite. In the description of the embodiment of the present application, the process of aligning the terminal 100 to the target satellite is called star alignment. Wherein, the radiation direction of the satellite antenna is the maximum gain direction of the signal when the antenna transmits the signal, and the signal strength in this direction is the largest.

After the satellite alignment is successful, the terminal 100 may send the first data packet to the target satellite along the radiation direction of the satellite antenna. In this way, without relying on external devices, the user can align the radiation direction of the satellite antenna of the terminal 100 to the target satellite, which enhances the communication performance between the terminal 100 and the target satellite, and simplifies the user's operation of selecting and aligning satellites .

It should be noted that, when the radiation direction of the satellite antenna of the terminal 100 is aligned with the target satellite, the terminal 100 sends the first data packet to the back of the target satellite. The target satellite may forward the first data packet to the satellite network device 200 .

Wherein, due to the different service types of the first data packet, after receiving the first data packet sent by the terminal 100 through the target satellite, the satellite network device 200 may perform corresponding operations based on the service type of the first data packet. Wherein, the service type of the first data packet may include message communication service, mailbox profile query service and letter message download service.

Specifically, when the service type of the first data packet is a message communication service, the first data packet is also called a satellite short message. The first data packet includes the content of the first message input by the user. After receiving the first data packet, the satellite network device 200 may forward the content of the first message to other terminals.

When the service type of the first data packet is the mail message download service, the first data packet is also called a service request. After receiving the first data packet sent by the terminal 100 via the target satellite, the satellite network device 200 may send the second data packet to the terminal 100 . Wherein, the second data packet includes the second message content, and the second message content is the content of the short message sent to the terminal 100 by other terminals (also referred to as other user equipments).

When the service type of the first data packet is mailbox profile query service, the first data packet is also called profile request. After receiving the first data packet sent by the terminal 100 via the target satellite, the satellite network device 200 may send the third data packet to the terminal 100 . The third data packet includes information about the number of short messages sent to the terminal 100 by other terminals (for example, the terminal 300 ).

In some embodiments, the satellite transmission link direction can be expressed as the pitch angle and azimuth angle of the line connecting the terminal 100 and the target satellite in the ground coordinate system, and the radiation direction of the satellite antenna can be expressed as the radiation direction of the satellite antenna of the terminal 100 The pitch angle and azimuth angle in the ground coordinate system. The terminal 100 may determine the pitch angle of the satellite transmission link direction and the radiation direction of the satellite antenna based on the pitch angle and azimuth angle of the satellite transmission link direction and the pitch angle and azimuth angle of the satellite antenna radiation direction in the ground coordinate system. The difference in pitch angle between the pitch angles, and the difference in azimuth angle between the azimuth angle in the direction of the satellite transmission link and the azimuth angle in the radiation direction of the satellite antenna. When the azimuth angle difference is less than or equal to the first threshold, and the elevation angle difference is less than or equal to the second threshold, the terminal 100 determines that the radiation direction of the satellite antenna is aligned with the target satellite. When the azimuth angle difference is greater than the first threshold or the elevation angle difference is greater than the second threshold, the terminal 100 determines that the radiation direction of the satellite antenna is not aimed at the target satellite. The terminal 100 may prompt the user to adjust the attitude of the terminal 100 based on the difference in pitch angle and the difference in azimuth, so that the radiation direction of the satellite antenna is aligned with the target satellite. After the terminal 100 detects that the user adjusts the attitude of the terminal 100, the terminal 100 can perform the aforementioned star alignment step again until the terminal 100 determines that the azimuth difference is less than/equal to the first threshold and the pitch difference is less than/equal to the second threshold , that is, the radiation direction of the satellite antenna of the terminal 100 is aimed at the target satellite.

A satellite communication system 10 provided in the embodiment of the present application is introduced below.

As shown in FIG. 1 , the satellite communication system 10 may include but not limited to a terminal 100 , a satellite 21 , a satellite network device 200 , a short message center 25 , a terminal 300 and so on. Optionally, the satellite communication system 10 may also include a national emergency rescue platform 26 and a national emergency rescue center 27 .

Wherein, the terminal 100 of the satellite network may send the first data packet to the terminal 300 of the cellular network. Specifically, the terminal 100 may first send the first data packet to the satellite 21, and the satellite 21 only performs relay, and may directly forward the first data packet sent by the terminal 100 to the satellite network device 200 on the ground. The satellite network device 200 may parse the first data packet forwarded by the satellite 21 according to the communication protocol, and forward the message content parsed from the first data packet to a short message center (short message service center, SMSC) 25 . The short message center 25 can forward the content of the message to the terminal 300 through a traditional cellular communication network. Wherein, the satellite network device 200 may also send the first data packet of the emergency rescue type sent by the terminal 100 to the national emergency rescue center 27 through the national emergency rescue platform 26 .

Wherein, the satellite 21 may include at least one GEO satellite, for example, three.

The terminal 300 of the cellular network (may be referred to as cellular user equipment) may also send the second data packet to the terminal 100 of the satellite network. The terminal 300 can send the short message to the short message center 25 through a traditional cellular communication network (also called a cellular network). The short message center 25 can forward the short message of the terminal 300 to the satellite network device 200 . The satellite network device 200 may relay and send the second data packet including the message content of the short message of the terminal 300 to the terminal 100 via the satellite 21 .

Wherein, the aforementioned satellite network equipment 200 may include a satellite transceiver station 22 , a satellite central station 23 and a satellite short message integrated communication platform 24 . Wherein, the satellite transceiver station 22 may include one or more devices respectively having a sending function and one or more devices having a receiving function, or may include one or more devices having a sending function and a receiving function, which is not limited here. The satellite transceiver station 22 can be used for the satellite network device 200 to process data at the physical layer protocol (PHY). The satellite central station 23 can be used for the data processing function of the satellite network equipment 200 at the satellite link control layer and the message data convergence protocol (message data convergence protocol, MDCP). The satellite short message fusion communication platform 24 can be used for processing data at the application layer protocol (APP).

Wherein, in the satellite communication system 10 above, the sending device may send data to the receiving device. After receiving the data frame sent by the sending device, the receiving device may send an acknowledgment character (ACK) of the SLC layer to the sending device. The sending device can determine whether the receiving device successfully receives the data frame based on the ACK.

In some embodiments, the GEO satellite in the satellite 21 in the satellite communication system 10 can be a Beidou short message satellite, the satellite network device 200 can be a Beidou network device, and the satellite transceiver station 22 in the satellite network device 200 can be a Beidou The satellite transceiver station and the satellite central station 23 may be the Beidou central station, and the satellite short message integrated communication platform 24 may be the Beidou short message integrated communication platform. Then at this time, the satellite network device 200 can analyze the first data packet forwarded by the satellite according to the Beidou communication protocol, and forward the message content parsed from the first data packet to the short message center 25 . The short message center 25 can forward the content of the message to the terminal 300 through a traditional cellular communication network.

The terminal 100 in the satellite communication system 10 will be described below.

The terminal 100 may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (personal digital assistant) assistant, PDA), augmented reality (augmented reality, AR) device, virtual reality (virtual reality, VR) device, artificial intelligence (AI) device, wearable device, car device, smart home device and/or smart city device , the embodiment of the present application does not specifically limit the specific type of the electronic device.

FIG. 2 shows a schematic diagram of a hardware structure provided by an embodiment of the present application.

The embodiment will be specifically described below by taking the terminal 100 as an example. It should be understood that the terminal 100 shown in FIG. 2 is only an example, and the terminal 100 may have more or fewer components than those shown in FIG. 2, may combine two or more components, or may have Different component configurations. The various components shown in Figure 2 may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.

The terminal 100 may include: a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, and an antenna 2 , mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, earphone jack 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194, and A subscriber identification module (subscriber identification module, SIM) card interface 195 and the like. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, bone conduction sensor 180M, etc.

It can be understood that, the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the terminal 100 . In other embodiments of the present application, the terminal 100 may include more or fewer components than shown in the figure, or combine certain components, or separate certain components, or arrange different components. The illustrated components can be realized in hardware, software or a combination of software and hardware.

The processor 110 may include one or more processing units, for example: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (graphics processing unit, GPU), an image signal processor ( image signal processor, ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural network processor (neural-network processing unit, NPU), etc. . Wherein, different processing units may be independent devices, or may be integrated in one or more processors.

Wherein, the controller may be the nerve center and command center of the terminal 100 . The controller can generate an operation control signal according to the instruction opcode and timing signal, and complete the control of fetching and executing the instruction.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided, and the waiting time of the processor 110 is reduced, thereby improving the efficiency of the system.

In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuitsound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver (universal asynchronous receiver) /transmitter, UART) interface, mobile industry processor interface (mobile industry processor interface, MIPI), general-purpose input and output (general-purpose input/output, GPIO) interface, subscriber identity module (subscriber identity module, SIM) interface, and/or A universal serial bus (universal serial bus, USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus, including a serial data line (serial data line, SDA) and a serial clock line (derail clock line, SCL). In some embodiments, processor 110 may include multiple sets of I2C buses. The processor 110 can be respectively coupled to the touch sensor 180K, the charger, the flashlight, the camera 193 and the like through different I2C bus interfaces. For example, the processor 110 may be coupled to the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C bus interface to realize the touch function of the terminal 100 .

The I2S interface can be used for audio communication. In some embodiments, processor 110 may include multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170 . In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface, so as to realize the function of answering calls through the Bluetooth headset.

The PCM interface can also be used for audio communication, sampling, quantizing and encoding the analog signal. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface. In some embodiments, the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to realize the function of answering calls through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is generally used to connect the processor 110 and the wireless communication module 160 . For example: the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to realize the Bluetooth function. In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.

The MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193 . The MIPI interface includes a camera serial interface (camera serial interface, CSI), a display serial interface (displayserial interface, DSI), and the like. In some embodiments, the processor 110 communicates with the camera 193 through a CSI interface to realize the shooting function of the terminal 100 . The processor 110 communicates with the display screen 194 through the DSI interface to realize the display function of the terminal 100 .

The GPIO interface can be configured by software. The GPIO interface can be configured as a control signal or as a data signal. In some embodiments, the GPIO interface can be used to connect the processor 110 with the camera 193 , the display screen 194 , the wireless communication module 160 , the audio module 170 , the sensor module 180 and so on. The GPIO interface can also be configured as an I2C interface, I2S interface, UART interface, MIPI interface, etc.

The USB interface 130 is an interface conforming to the USB standard specification, specifically, it may be a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like. The USB interface 130 can be used to connect a charger to charge the terminal 100, and can also be used to transmit data between the terminal 100 and peripheral devices. It can also be used to connect headphones and play audio through them. This interface can also be used to connect other electronic devices, such as AR devices.

It can be understood that the interface connection relationship between the modules shown in the embodiment of the present invention is only a schematic illustration, and does not constitute a structural limitation of the terminal 100 . In other embodiments of the present application, the terminal 100 may also adopt different interface connection modes in the foregoing embodiments, or a combination of multiple interface connection modes.

The charging management module 140 is configured to receive a charging input from a charger. Wherein, the charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 can receive charging input from the wired charger through the USB interface 130 . In some wireless charging embodiments, the charging management module 140 may receive wireless charging input through the wireless charging coil of the terminal 100 . While the charging management module 140 is charging the battery 142 , it can also provide power for electronic devices through the power management module 141 .

The power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 . The power management module 141 receives the input from the battery 142 and/or the charging management module 140 to provide power for the processor 110 , the internal memory 121 , the external memory, the display screen 194 , the camera 193 , and the wireless communication module 160 . The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle times, and battery health status (leakage, impedance). In some other embodiments, the power management module 141 may also be disposed in the processor 110 . In some other embodiments, the power management module 141 and the charging management module 140 may also be set in the same device.

The wireless communication function of the terminal 100 can be realized by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in terminal 100 may be used to cover single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: Antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 can provide wireless communication solutions including 2G/3G/4G/5G applied on the terminal 100 . The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA) and the like. The mobile communication module 150 can receive electromagnetic waves through the antenna 1, filter and amplify the received electromagnetic waves, and send them to the modem processor for demodulation. The mobile communication module 150 can also amplify the signals modulated by the modem processor, and convert them into electromagnetic waves through the antenna 1 for radiation. In some embodiments, at least part of the functional modules of the mobile communication module 150 may be set in the processor 110 . In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be set in the same device.

A modem processor may include a modulator and a demodulator. Wherein, the modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator sends the demodulated low-frequency baseband signal to the baseband processor for processing. The low-frequency baseband signal is passed to the application processor after being processed by the baseband processor. The application processor outputs sound signals through audio equipment (not limited to speaker 170A, receiver 170B, etc.), or displays images or videos through display screen 194 . In some embodiments, the modem processor may be a stand-alone device. In some other embodiments, the modem processor may be independent from the processor 110, and be set in the same device as the mobile communication module 150 or other functional modules.

The wireless communication module 160 can provide applications on the terminal 100 including wireless local area networks (wireless local area networks, WLAN) (such as wireless fidelity (wireless fidelity, Wi-Fi) network), bluetooth (bluetooth, BT), global navigation satellite system ( Global navigation satellite system, GNSS), satellite communication module, frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 . The wireless communication module 160 can also receive the signal to be sent from the processor 110 , frequency-modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 for radiation.

Among them, the satellite communication module can be used to communicate with the satellite network equipment 200. For example, in the Beidou communication system, the satellite network equipment 200 is the Beidou network equipment, the satellite communication module can communicate with the Beidou network equipment, and the satellite communication module can support Beidou network Short message transmission between devices.

In some embodiments, the antenna 1 of the terminal 100 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the terminal 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, and/or IR technology, etc. The GNSS may include a global positioning system (global positioning system, GPS), a global navigation satellite system (globalnavigation satellite system, GLONASS), a Beidou satellite navigation system (beidou navigationsatellite system, BDS), a quasi-zenith satellite system (quasi-zenith) satellite system (QZSS) and/or satellite based augmentation systems (SBAS).

The terminal 100 realizes the display function through the GPU, the display screen 194, and the application processor. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos and the like. The display screen 194 includes a display panel. The display panel may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light emitting diode). AMOLED), flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diodes (quantum dot light emitting diodes, QLED), etc. In some embodiments, the terminal 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

The terminal 100 can realize the shooting function through the ISP, the camera 193 , the video codec, the GPU, the display screen 194 and the application processor.

The ISP is used for processing the data fed back by the camera 193 . For example, when taking a picture, open the shutter, the light is transmitted to the photosensitive element of the camera through the lens, and the light signal is converted into an electrical signal, and the photosensitive element of the camera transmits the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye. ISP can also perform algorithm optimization on image noise, brightness, and skin color. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be located in the camera 193 .

Camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects it to the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a complementary metal-oxide-semiconductor (complementary metal-oxide-semiconductor, CMOS) phototransistor. The photosensitive element converts the light signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. DSP converts digital image signals into standard RGB, YUV and other image signals. In some embodiments, the terminal 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.

Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the terminal 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the energy of the frequency point.

Video codecs are used to compress or decompress digital video. Terminal 100 may support one or more video codecs. In this way, the terminal 100 can play or record videos in various encoding formats, for example: moving picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

The NPU is a neural-network (NN) computing processor. By referring to the structure of biological neural networks, such as the transfer mode between neurons in the human brain, it can quickly process input information and continuously learn by itself. Applications such as intelligent cognition of the terminal 100 can be implemented through the NPU, such as image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to expand the storage capability of the terminal 100 . The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. Such as saving music, video and other files in the external memory card.

The internal memory 121 may be used to store computer-executable program codes including instructions. The processor 110 executes various functional applications and data processing of the terminal 100 by executing instructions stored in the internal memory 121 . The internal memory 121 may include an area for storing programs and an area for storing data. Wherein, the stored program area can store an operating system, at least one application program required by a function (such as a sound playing function, an image playing function, etc.) and the like. The data storage area can store data created during the use of the terminal 100 (such as audio data, phonebook, etc.) and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (universal flash storage, UFS) and the like.

The terminal 100 may implement an audio function through an audio module 170 , a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, and an application processor. Such as music playback, recording, etc.

The audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be set in the processor 110 , or some functional modules of the audio module 170 may be set in the processor 110 .

Speaker 170A, also referred to as a "horn", is used to convert audio electrical signals into sound signals. Terminal 100 can listen to music through speaker 170A, or listen to hands-free calls.

Receiver 170B, also called "earpiece", is used to convert audio electrical signals into sound signals. When the terminal 100 answers a phone call or voice information, the receiver 170B can be placed close to the human ear to listen to the voice.

The microphone 170C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a phone call or sending a voice message, the user can put his mouth close to the microphone 170C to make a sound, and input the sound signal to the microphone 170C. The terminal 100 may be provided with at least one microphone 170C. In some other embodiments, the terminal 100 may be provided with two microphones 170C, which may also implement a noise reduction function in addition to collecting sound signals. In some other embodiments, the terminal 100 can also be equipped with three, four or more microphones 170C to realize sound signal collection, noise reduction, identify sound sources, realize directional recording functions, and the like.

The earphone interface 170D is used for connecting wired earphones. The earphone interface 170D may be the USB interface 130, or a 3.5mm open mobile terminal platform (OMTP) standard interface, or a cellular telecommunications industry association of the USA (CTIA) standard interface.

The pressure sensor 180A is used to sense the pressure signal and convert the pressure signal into an electrical signal. In some embodiments, pressure sensor 180A may be disposed on display screen 194 . There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, and capacitive pressure sensors. A capacitive pressure sensor may be comprised of at least two parallel plates with conductive material. When a force is applied to the pressure sensor 180A, the capacitance between the electrodes changes. The terminal 100 determines the strength of the pressure from the change in capacitance. When a touch operation acts on the display screen 194, the terminal 100 detects the intensity of the touch operation according to the pressure sensor 180A. The terminal 100 may also calculate the touched position according to the detection signal of the pressure sensor 180A. In some embodiments, touch operations acting on the same touch position but with different touch operation intensities may correspond to different operation instructions. For example: when a touch operation with a touch operation intensity less than the first pressure threshold acts on the short message application icon, an instruction to view short messages is executed. When a touch operation whose intensity is greater than or equal to the first pressure threshold acts on the icon of the short message application, the instruction of creating a new short message is executed.

The gyro sensor 180B can be used to determine the motion posture of the terminal 100 . In some embodiments, the angular velocity of the terminal 100 around three axes (ie, x, y and z axes) can be determined by the gyro sensor 180B. The gyro sensor 180B can be used for image stabilization. Exemplarily, when the shutter is pressed, the gyro sensor 180B detects the shaking angle of the terminal 100, and calculates the distance that the lens module needs to compensate according to the angle, and allows the lens to counteract the shaking of the terminal 100 through reverse movement to achieve anti-shake. The gyro sensor 180B can also be used for navigation and somatosensory game scenes.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the terminal 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.

The magnetic sensor 180D includes a Hall sensor. The terminal 100 may use the magnetic sensor 180D to detect the opening and closing of the flip holster. In some embodiments, when the terminal 100 is a clamshell machine, the terminal 100 can detect the opening and closing of the clamshell according to the magnetic sensor 180D. Furthermore, according to the detected opening and closing state of the leather case or the opening and closing state of the flip cover, features such as automatic unlocking of the flip cover are set.

The magnetic sensor 180D also includes a magnetometer. The terminal 100 may use the magnetometer to acquire geomagnetic information of the location where the terminal 100 is located. Specifically, the terminal 100 may use a magnetometer to detect the angles between the reference direction of the terminal 100 and the four directions of the magnetic north coordinate system, central, south, north, and north, so as to determine the orientation of the reference direction of the terminal 100 in the geomagnetic coordinate system. Wherein, the reference direction of the terminal 100 may be a direction parallel to the display screen of the terminal 100 and perpendicular to the top frame of the terminal 100 .

The acceleration sensor 180E can detect the acceleration of the terminal 100 in various directions (generally three axes). The magnitude and direction of gravity can be detected when the terminal 100 is stationary. It can also be used to identify the posture of electronic devices, and can be used in applications such as horizontal and vertical screen switching, pedometers, etc.

The distance sensor 180F is used to measure the distance. The terminal 100 can measure the distance by infrared or laser. In some embodiments, when shooting a scene, the terminal 100 may use the distance sensor 180F for distance measurement to achieve fast focusing.

Proximity light sensor 180G may include, for example, light emitting diodes (LEDs) and light detectors, such as photodiodes. The light emitting diodes may be infrared light emitting diodes. The terminal 100 emits infrared light through the light emitting diode. The terminal 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it may be determined that there is an object near the terminal 100 . When insufficient reflected light is detected, the terminal 100 may determine that there is no object near the terminal 100 . The terminal 100 can use the proximity light sensor 180G to detect that the user holds the terminal 100 close to the ear to make a call, so as to automatically turn off the screen to save power. The proximity light sensor 180G can also be used in leather case mode, automatic unlock and lock screen in pocket mode.

The ambient light sensor 180L is used for sensing ambient light brightness. The terminal 100 may adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the terminal 100 is in the pocket, so as to prevent accidental touch.

The fingerprint sensor 180H is used to collect fingerprints. The terminal 100 can use the collected fingerprint characteristics to realize fingerprint unlocking, access to the application lock, take pictures with fingerprints, answer incoming calls with fingerprints, and so on.

The temperature sensor 180J is used to detect temperature. In some embodiments, the terminal 100 uses the temperature detected by the temperature sensor 180J to implement a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds the temperature threshold, the terminal 100 executes reducing the performance of a processor located near the temperature sensor 180J, so as to reduce power consumption and implement thermal protection. In other embodiments, when the temperature is lower than another temperature threshold, the terminal 100 heats the battery 142 to prevent the terminal 100 from being shut down abnormally due to the low temperature. In some other embodiments, when the temperature is lower than another temperature threshold, the terminal 100 boosts the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.

Touch sensor 180K, also known as "touch panel". The touch sensor 180K can be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, also called a “touch screen”. The touch sensor 180K is used to detect a touch operation on or near it. The touch sensor can pass the detected touch operation to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through the display screen 194 . In other embodiments, the touch sensor 180K may also be disposed on the surface of the terminal 100 , which is different from the position of the display screen 194 .

The bone conduction sensor 180M can acquire vibration signals. In some embodiments, the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human voice. The bone conduction sensor 180M can also contact the human pulse and receive the blood pressure beating signal. In some embodiments, the bone conduction sensor 180M can also be disposed in the earphone, combined into a bone conduction earphone. The audio module 170 can analyze the voice signal based on the vibration signal of the vibrating bone mass of the vocal part acquired by the bone conduction sensor 180M, so as to realize the voice function. The application processor can analyze the heart rate information based on the blood pressure beating signal acquired by the bone conduction sensor 180M, so as to realize the heart rate detection function.

The keys 190 include a power key, a volume key and the like. The key 190 may be a mechanical key. It can also be a touch button. The terminal 100 may receive key input and generate key signal input related to user settings and function control of the terminal 100 .

The motor 191 can generate a vibrating reminder. The motor 191 can be used for incoming call vibration prompts, and can also be used for touch vibration feedback. For example, touch operations applied to different applications (such as taking pictures, playing audio, etc.) may correspond to different vibration feedback effects. The motor 191 may also correspond to different vibration feedback effects for touch operations acting on different areas of the display screen 194 . Different application scenarios (for example: time reminder, receiving information, alarm clock, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also support customization.

The indicator 192 can be an indicator light, and can be used to indicate charging status, power change, and can also be used to indicate messages, missed calls, notifications, and the like.

The SIM card interface 195 is used for connecting a SIM card. The SIM card can be connected and separated from the terminal 100 by inserting it into the SIM card interface 195 or pulling it out from the SIM card interface 195 . The terminal 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1. SIM card interface 195 can support Nano SIM card, Micro SIM card, SIM card and so on. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the multiple cards may be the same or different. The SIM card interface 195 is also compatible with different types of SIM cards. The SIM card interface 195 is also compatible with external memory cards. The terminal 100 interacts with the network through the SIM card to implement functions such as calling and data communication. In some embodiments, the terminal 100 adopts an eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the terminal 100 and cannot be separated from the terminal 100 .

The following specifically introduces the transmission control method provided in the embodiment of the present application in combination with application scenarios.

In a possible implementation, the terminal 100 cannot use other network resources (for example, a cellular network) other than the satellite network, that is, when there is no signal, for example, when the terminal 100 is in an ocean, desert, grassland, wireless When mobile communication does not cover, or cannot cover, or areas where the communication system is damaged, such as crowded areas. After the radiation direction of the satellite antenna is aligned with the target satellite, the terminal 100 may send the first data packet to the target satellite along the radiation direction of the satellite antenna. Terminal 100 can communicate with other terminals (such as terminal 300 ) through the target satellite, that is, send satellite short messages to other terminals, or receive short messages sent by other terminals.

Specifically, after receiving the user's input of sending the first data packet, the terminal 100 may perform a satellite selection operation in response to the input to determine the target satellite. Then, the terminal 100 can calculate the pitch angle difference between the pitch angle of the satellite transmission link direction and the pitch angle of the radiation direction of the satellite antenna, and the azimuth angle of the satellite transmission link direction and the azimuth angle of the satellite antenna radiation direction The azimuth angle difference between . When the pitch angle difference is greater than the first threshold or the azimuth angle difference is greater than the second threshold, the terminal 100 may display deviation prompt information on the interface, and the deviation prompt information may be used to prompt the user to adjust the attitude of the terminal 100 . After the terminal 100 receives the input to adjust the attitude, in response to the input, the terminal 100 can perform the star alignment process again, and recalculate the pitch angle difference between the pitch angle of the satellite transmission link direction and the pitch angle of the radiation direction of the satellite antenna , and the difference in azimuth between the azimuth of the satellite transmission link direction and the azimuth of the radiation direction of the satellite antenna. The terminal 100 can detect the attitude of the user adjusting the terminal 100 in real time, and calculate the azimuth angle deviation and the elevation angle deviation in real time until the azimuth angle difference is less than or equal to the first threshold and the elevation angle difference is less than or equal to the second threshold. When the azimuth angle difference is less than/equal to the first threshold and the elevation angle difference is less than/equal to the second threshold, the terminal 100 may display accurate prompt information on the interface, and send the first data packet to the target satellite. Wherein, the accurate prompt information may be used to prompt the radiation direction of the satellite antenna of the user terminal 100 to be aligned with the target satellite. After the terminal 100 sends the first data packet to the target satellite along the radiation direction of the satellite antenna aligned with the target satellite, the terminal 100 can display sending prompt information, and the sending prompt information can be used to remind the user that the terminal 100 has sent the data packet to the target terminal. the first packet.

It can be understood that, after receiving the first data packet sent by the terminal 100 , the target satellite may send the first data packet to the satellite network device 200 . When the first data packet is a satellite short message, the satellite network device 200 may send the first message content of the first data packet to the target terminal through the cellular network/satellite. When the first data packet is a service request, the satellite network device 200 may send the second data packet to the terminal 100 through the target satellite. When the first data packet is a profile request, the satellite network device 200 may send the third data packet to the terminal 100 through the target satellite.

It can be understood that, in addition to text prompt information and image text information, the prompt information in the above interface can also be other types, for example, animation prompt information, or a combination of at least two of them. This application is not limited to this.

The following introduces a set of schematic diagrams of interfaces provided by the embodiment of the present application for the terminal 100 to send satellite short messages under the satellite network.

Exemplarily, as shown in FIG. 3A , the terminal 100 displays a desktop 300 . Wherein, the desktop 300 may include multiple application icons, for example, the satellite communication application icon 302 and so on. Wherein, the satellite communication application icon 302 can be used to trigger the display of the interface of the satellite communication application (for example, the satellite message interface 310 shown in FIG. The first data packet of the content is sent to other terminals, and the second data packet/third data packet sent by the satellite network device 200 may also be received. Wherein, a status bar 301 can also be displayed on the top of the desktop 300, and a prompt icon 301A can be displayed in the status bar, and the prompt icon 301A is used to indicate that the terminal 100 is disconnected from the cellular network. At this time, the terminal 100 is in a state of no cellular signal .

The terminal 100 receives the user's input (for example, click) on the satellite communication application icon 302, and in response to the input, the terminal 100 may display a satellite message interface 310 as shown in FIG. 3B.

As shown in FIG. 3B , the terminal 100 may display a satellite message interface 310 . The satellite message interface 310 may include a new control 311, and the new control 311 is used to trigger an interface for displaying a new satellite short message (eg, the new information interface 320 shown in FIG. 3C ). The satellite message interface 310 may further include a receiving control 312, and the receiving control 312 is used to trigger the terminal 100 to download the second data package including the content of the second message sent by other terminals. The satellite message interface 310 may further include a query control 313, which is used to trigger the terminal 100 to query the quantity information of short messages sent to the terminal 100 by other terminals.

Terminal 100 receives user input (for example, click) on the new control 311 , and in response to the input, terminal 100 may display a new information interface 320 as shown in FIG. 3C . The new information interface 320 may display a contact display area 321 . The contact display area 321 can display a plurality of contact icons, such as a contact icon 321A, which can be used to trigger the display of an information editing interface (eg, an information editing interface 330 ) communicated with the contact corresponding to the contact icon.

Terminal 100 receives the user's input (for example, click) on contact icon 321A, and in response to the input, terminal 100 may display the information editing interface 330 of the contact "Lucy" corresponding to the contact icon 321A. As shown in FIG. 3D , the communication interface 330 may include an editing field 331 , a sending control 332 and the like. Wherein, the editing column 331 can be used to display the content of the satellite short message edited by the user. For example, the editing column 331 may display the content of the satellite short message, for example: "arrive at the campsite safely". The sending control 331 can trigger the terminal 100 to send the satellite short message including the content displayed in the editing column 331 to the satellite network device 200 .

In some embodiments, after the terminal 100 receives an input (such as a single click) for the sending control 331, in response to the input, before the satellite short message is sent to the satellite network device 200, it will also perform star selection and star alignment operations , so that when the radiation direction of the satellite antenna is aligned with the target satellite, the satellite short message can be sent to the target satellite, and the first data packet can be sent to the satellite network device 200 through the target satellite. Wherein, when the terminal 100 performs the satellite selection operation, it can display a star selection interface, and the star selection interface can include multiple satellites. When the terminal 100 determines the target satellite from the multiple satellites, it can display a mark, and the mark can be used to indicate the target satellite. Satellites are selected. Wherein, when the terminal 100 performs a star alignment operation, it may display a star alignment interface, and the star alignment interface may include the target satellite and the aforementioned azimuth angle deviation and elevation angle deviation. Optionally, the terminal 100 may perform a star selection operation in the background, and when the terminal 100 receives an input (such as a single click) on the send control 331, in response to the input, a star alignment interface 360 as shown in FIG. 3G is displayed.

Exemplarily, for a set of schematic interface diagrams related to star selection operations, refer to the following descriptions of FIG. 3E and FIG. 3F , and for a set of schematic interface diagrams related to star alignment operations, refer to the following descriptions of FIGS. 3G and 3H .

The terminal 100 may display a star selection interface 340 as shown in FIG. 3E in response to the user's input on the sending control 331 . Wherein, the star selection interface 340 may include prompt information 341 , prompt information 342 and a satellite icon display area 343 . Among them, the prompt information 341 and the prompt information 342 can be used to prompt the user terminal 100 to perform the satellite selection operation, try to keep the terminal 100 in an open area, so that the current satellite signal received by the terminal 100 is not blocked by obstacles (for example, mountains), Improve the success rate of sending the first data packet to the target satellite. Wherein, the prompt information 341 , the prompt information 342 and the prompt information 343 may include but not limited to text prompt information, picture prompt information, animation prompt information and the like. For example, the prompt message 341 may be a text prompt message: "You are looking for stars, please try to be in an open area, and avoid foreign objects blocking signals within the visible range". For example, the prompt message 342 may be a text prompt message as: "Selecting stars, please wait". Wherein, the satellite icon display area 343 may be used to display the satellite icon and serial number information corresponding to the satellites searched by the terminal 100 . For example, the satellite icon display area 343 may display the satellite number and satellite icon of the "No. 1" satellite, the satellite number and satellite icon of the "No. 2" satellite, and the satellite number and satellite icon of the "No. 3" satellite.

After the terminal 100 determines the satellite with the strongest signal from the searched satellites through satellite selection, it may display the first mark, and the first mark may be used to indicate that the target satellite has been selected. Optionally, the first mark may also be used to remind the user of the satellite number and satellite icon of the selected target satellite.

For example, after the target satellite is selected, the terminal 100 may display a satellite selection interface 350 as shown in FIG. 3F below. As shown in FIG. 3F , the star selection interface 350 may include prompt information 351 , prompt information 352 and a satellite icon display area 353 . Among them, the prompt information 351, the prompt information 352 and the satellite icon display area 353 can be used to remind the user that the current satellite selection has been completed and should be in an open area, so that the terminal 100 will not be blocked by obstacles when sending and receiving satellite signals, and improve the performance of the second satellite signal. The success rate of sending a data packet to the satellite network device 200 . Wherein, the prompt information 351 and the prompt information 352 may be text type prompt information. For example, the prompt message 351 can be a text prompt message: "Please try to stay in an open area, and avoid foreign objects blocking the signal within the visible range of sight", and the prompt message 352 can be a text prompt message: "Successful star selection, please follow the prompt information to adjust the terminal posture to ensure the quality of communication.” Wherein, the satellite icon display area 353 may include satellite icons and number information corresponding to the satellites searched by the terminal 100 . Wherein, the satellite icon display area 353 may further include a mark 353A. Wherein, the terminal 100 may identify the selected target satellite through a mark, and the mark may be a color mark or a graphic mark. For example, indicia 353A is a graphic indicium. The mark 353A can be used to prompt the user that the satellite “No. 1” is the target satellite selected by the terminal 100 . Wherein, when the mark is a color mark, the color mark may be to change the color of the target satellite when displayed so that the color of the target satellite is different from that of other satellites, thereby prompting the user to identify the target satellite.

In a possible implementation manner, the terminal 100 may receive a user's input on the satellite icon or number, and in response to the input, determine that the satellite corresponding to the satellite icon or number is the target satellite. For example, the terminal 100 may respond to the user's input (such as clicking) on the satellite icon of the "No. 1" satellite shown in FIG. The star selection interface 350 shown in FIG. 3F above.

After the terminal 100 performs the satellite selection operation to obtain the target satellite, it can perform the satellite alignment operation, and the terminal 100 can calculate and display the pitch angle deviation and the azimuth angle deviation between the radiation direction of the satellite antenna in the terminal 100 and the direction of the satellite transmission link in real time. When the terminal 100 determines that the radiation direction of the satellite antenna is not aligned with the target satellite based on the pitch angle deviation and the azimuth angle deviation, the terminal 100 can display deviation prompt information, and the deviation prompt information is used to prompt the user to adjust the attitude of the terminal 100 so that the satellite antenna The radiation direction is aimed at the target satellite. When the terminal 100 determines that the radiation direction of the satellite antenna is aligned with the target satellite based on the pitch angle deviation and the azimuth angle deviation, the terminal 100 can display accurate prompt information, which is used to remind the user that the radiation direction of the satellite antenna has been aligned with the target satellite . It should be noted that the pitch angle deviation and the azimuth angle deviation may be displayed in the form of text, picture, animation, etc., which is not limited in this embodiment of the present application.

Exemplarily, the terminal 100 may display a star alignment interface 360 as shown in FIG. 3G after displaying the star selection interface 350 .

As shown in FIG. 3G , the star alignment interface 360 may include prompt information 361 , prompt information 362 and prompt information 363 . Among them, the prompt information 361, the prompt information 362 and the prompt information 363 can be used to remind the user to adjust the terminal 100 in the direction of reducing the azimuth angle deviation and the pitch angle deviation according to the prompt, so that the radiation direction of the satellite antenna of the terminal 100 is aligned with the target satellite. Wherein, the prompt information 361 and the prompt information 363 may be text prompt information, and the prompt information 362 may include text prompt information and picture prompt information. For example, the prompt message 361 can be: "Please adjust the terminal to the best posture (reminder: please follow the instructions to rotate the mobile phone so that the satellite icon is aligned with the gray area on the top; please adjust the angle of the mobile phone up and down until the two circles coincide. , the mobile phone is in the best posture)". Wherein, the “top gray area” is the content shown in the area 362A in the prompt information 362 , and the “two circles” is the content shown in the area 362B in the prompt information 362 . The prompt information 362 may also include a way for the user to adjust the posture of the terminal. For example, the text prompt message "Please rotate the phone to the right" in the prompt information 362 may be used to prompt the user to rotate in a specified direction (for example, to the right hand). Wherein, the prompt information 363 may include real-time data of the satellite time terminal 100, such as one or more of local time, azimuth angle deviation, elevation angle deviation, and signal strength. Among them, the local time is the time of the city where the current terminal 100 is located, the azimuth angle deviation is the azimuth angle difference between the azimuth angle of the satellite transmission link direction and the azimuth angle of the radiation direction of the satellite antenna, and the pitch angle angle deviation is the azimuth angle of the satellite transmission link. The pitch angle difference between the pitch angle in the link direction and the pitch angle in the radiation direction of the satellite antenna, and the signal strength is the signal strength of the target satellite received by the current terminal 100 .

In the case that the azimuth angle difference is greater than the first threshold or the pitch angle difference is greater than the second threshold, the terminal 100 may, after receiving an input from the user to adjust the attitude of the terminal 100, perform the star alignment operation again in response to the input, and restart Calculate the pitch angle difference and the azimuth angle difference. The terminal 100 may update and display the values of the pitch angle deviation and the azimuth angle deviation in the prompt information 363 of the star interface 360 . The star alignment process may be performed cyclically until the difference in elevation angle is less than/equal to the second threshold and the difference in azimuth angle is less than/equal to the first threshold. When the elevation angle difference is less than/equal to the second threshold and the azimuth angle difference is less than/equal to the first threshold, the terminal 100 may display the star alignment interface 370 as shown in FIG. 3H .

As shown in FIG. 3H , the star alignment interface 370 is an interface provided by the terminal 100 for successful star alignment. The interface 370 includes prompt information 371 , prompt information 372 and prompt information 373 . Among them, the prompt information 371 can be used to remind the user that the star alignment has been completed at this time, but the current attitude should be maintained so as not to affect the sending of the first data packet. Wherein, the prompt information 373 may be used to prompt the real-time data of the user terminal 100 (for example, received signal strength of the target satellite, azimuth angle deviation, etc.). Wherein, the prompt information 371 and the prompt information 372 may be text type prompt information, wherein the prompt information 371 may be: "The mobile phone has been aligned with the target satellite, and after the vibration is felt, the satellite short message will be sent and received, please keep the posture unchanged". The prompt information 372 may include picture prompt information and text prompt information. The prompt information 372 includes a schematic diagram of when the radiation direction of the satellite antenna is aligned with the target satellite after the satellite alignment is successful.

After the terminal 100 successfully aligns with the satellite, it can send the first data packet to the target satellite, and relay the first data packet to the satellite network device 200, and then the satellite network device 200 passes the cellular network device 400/ Satellite 21 transmits the first data packet to other terminals.

In a possible implementation manner, the terminal 100 may send the first data packet to the target satellite after the satellite-to-satellite selection. After the terminal 100 sends the first data packet to the target satellite, it may display sending prompt information, and the sending prompt information may be used to prompt the user terminal 100 that the first data packet has been sent to the target terminal.

Exemplarily, after sending the first data packet to the target satellite, the terminal 100 may display the information detail interface 380 as described in FIG. 3I . Wherein, the information detail interface 380 is an interface provided by the terminal to display the first message content of the first data packet. Wherein, the information detail interface 380 includes prompt information 381, which is used to indicate that the terminal 100 has sent the first data packet to other terminals. Wherein, the prompt information 381 may be text type prompt information, for example, "sent".

In a possible implementation manner, after receiving the first data packet sent by the terminal 100, the satellite network device 200 may parse the first data packet, and send an application including the result of parsing the first data packet to the terminal 100. Layer receipt (also known as the first application layer receipt). The terminal 100 may determine the sending situation of the first data packet through the application layer receipt.

Optionally, when the terminal 100 determines that the application layer receipt indicates that the first data packet has failed to be sent, the terminal 100 may display failure prompt information, and the failure prompt information may be used to prompt the user that the first data packet fails to be sent. For example, the failure prompt information may be text type prompt information: "failed to send". When the terminal 100 determines that the application layer receipt indicates that the first data packet is successfully sent, the terminal 100 may display a success prompt message, and the success prompt message may be used to prompt the user that the first data packet is successfully sent. For example, the success prompt information may be text type prompt information: "send successfully".

In some embodiments, if the terminal 100 does not receive the application receipt within a preset time threshold (for example, 1 minute) after sending the first data packet, the terminal 100 may display a failure prompt message, or continue to display the sending prompt message.

In a possible implementation manner, in the process of sending the first data packet, the terminal 100 may not only send the first data packet to the target satellite, but also send a fourth data packet to the target satellite, the fourth data packet The business type is letter message download. After receiving the first data packet and the fourth data packet, the target satellite may send the first data packet and the fourth data packet to the satellite network device 200 . The satellite network device 200 may send the second data packet to the terminal 100 through the target satellite based on the fourth data packet. The second data packet is a second data packet sent to the terminal 100 by other terminals before sending the first data packet to other terminals when the terminal 100 is in a no-signal state. In this way, the terminal 100 can receive the second data packets of other terminals while sending the first data packets.

Optionally, the terminal 100 may display receiving prompt information after sending the fourth data packet. The receiving prompt information is used to prompt the user terminal 100 to receive short messages from other terminals through the target satellite. For example, the receiving prompt information may be text type prompt information: "receiving satellite short message, please do not move the mobile phone".

After successfully receiving the second data packet, the terminal 100 may display the second message content in the second data packet.

Exemplarily, as shown in FIG. 3J , after the terminal 100 has sent the first data packet and received the second data packet, and an application layer receipt indicating that the first data packet has been successfully received, the terminal 100 may display an information detail interface 390 . Wherein, the information detail interface 390 may include an information box 391 , prompt information 392 , prompt information 393 and prompt information 394 . Wherein, the information box 391 may display the content of the second data packet. The prompt information 392 may be used to display the sending time when other terminals send the second data packet to the terminal 100, for example, "07:31". The prompt information 394 may be used to prompt the user terminal 100 to send the time of the first data packet, for example, "08:00". Wherein, the terminal 100 may display prompt information 393 after receiving the application layer receipt indicating that the sending is successful. The prompt information 393 may be used to prompt the user that the first data packet is sent successfully.

In some embodiments, after the terminal 100 sends a service request (for example, the fourth data packet) to the target satellite in the background, the terminal 100 does not receive the second data packet within a preset time threshold (for example, 1 minute), The terminal 100 may determine that the terminal 100 fails to send the service request to the target satellite. The terminal 100 may display request failure prompt information, and the request failure prompt information is used to prompt the user to fail to receive short messages from other terminals.

Exemplarily, the terminal 100 may display an error prompt box 395 as shown in FIG. 3K on the information detail interface 380 as shown in FIG. 3I . Wherein, the error prompt box 395 may include an error prompt 395A and a "OK" control 395B. Wherein, the error prompt 395A may be used to prompt the user terminal 100 that the second data packet is not received. The “OK” control 395B can be used to trigger the terminal 100 to cancel displaying the error prompt box 397 .

Optionally, when displaying the failure prompt information, the terminal 100 may also display a retransmission control. The retransmission control can be used to trigger the terminal 100 to re-execute the satellite selection and satellite alignment operations, and resend the service request to the target satellite after the satellite alignment is successful. For example, the terminal 100 may, after receiving the user's input on the "confirm" control 395B, respond to the input, perform the above-mentioned satellite selection operation, and resend the fourth data packet after the satellite alignment is successful.

In some embodiments, after the terminal 100 does not receive the second data packet within the preset time threshold, the terminal 100 may re-perform the above satellite selection and star alignment operations, and resend the fourth data packet to the target satellite.

In a possible implementation, the terminal 100 can respond to the user receiving the input of the second data packet, perform satellite selection and satellite alignment operations, and download the service type as letter message along the radiation direction of the satellite antenna after the star alignment. The first data packet (ie, service request) of is sent to the target satellite. The target satellite may send the service request to the satellite network device 200, and the satellite network device 200 may send the second data packet to the terminal 100 through the target satellite based on the service request. Wherein, the second data packet includes the content of the short message sent to the terminal 100 by other terminals. In this way, since the radiation direction of the satellite antenna of the terminal 100 is aimed at the target satellite, the signal of the target satellite is stronger, and the first data packet can be sent and the second data packet can be received with higher quality.

Next, a set of schematic interface diagrams for terminal 100 receiving the first data packet sent by other terminals will be introduced.

After the terminal 100 receives the user's input (for example, single click) on the receiving control 312 as shown in FIG. When the direction is aligned with the target satellite, the second data packet sent to the terminal 100 by other terminals is received. The exemplary interfaces involved in star selection and alignment by the terminal 100 may be the interfaces shown in FIG. 3E-FIG. 3H . For specific descriptions, reference may be made to the above-mentioned embodiments shown in FIG. 3E-FIG. 3H , which will not be repeated here.

Exemplarily, after the terminal 100 is aligned with the satellite successfully, it may receive the second data packet sent by other terminals through the target satellite, and display the satellite message interface 400 as shown in FIG. 4A .

As shown in FIG. 4A , a message prompt 401 and a contact display area 402 may be displayed on the satellite message interface 400 . Wherein, the letter prompt 401 may be used to prompt the user to receive the second data packet from other terminals. The letter prompt 401 may also include the quantity information of the received second data packets. The quantity information may be used to prompt the user to receive the quantity of new second data packets. Wherein, the contact display area 402 may include one or more contact options, such as contact option 402A. Wherein, the contact option may display a name of the contact, a summary of messages sent by the contact, etc., and the contact option may be used to trigger the terminal 100 to display a letter editing interface corresponding to the contact. Wherein, the contact option may include a new message prompt, such as a new message prompt 402B. Wherein, the new message prompt may be used to prompt the user to receive new information sent by the contact corresponding to the contact option, and may also be used to indicate the number of the new messages received. For example, the contact option 402A may include a new message prompt 402B, and the new message prompt 402B may be used to indicate that the terminal 100 has received a first data packet from the contact "Lucy", and the general content of the first data packet is: " be safe".

After terminal 100 receives the user's input (for example, click) on contact item 402A, in response to the input, terminal 100 may display the information editing interface 410 of the contact "Lucy" corresponding to the contact item 402A.

As shown in FIG. 4B , the information editing interface 410 may include an information box 411 and prompt information 412 . Wherein, the information box 391 may display the content of the received second data packet, for example, "pay attention to safety". The prompt information 412 is used to indicate the time when other devices send the second data packet to the terminal 100, for example, "07:31".

It should be understood that, in addition to the manner described in the interface described in FIG. 4A and FIG. 4B , the way for the terminal 100 to receive the second data packet can also be the manner involved in the above-mentioned FIG. 3J . For details, please refer to the embodiment shown in the above-mentioned FIG. 3J . This will not be repeated here.

In a possible implementation, after the terminal 100 sends the first data packet to the target satellite, it may display sending prompt information, and the sending prompt information may be used to remind the user that the terminal 100 has sent a service request to the target satellite, that is, remind the user Receiving short messages sent by other terminals.

In some embodiments, after the terminal 100 sends the service request to the target satellite, but the terminal 100 does not receive the second data packet within the preset time threshold, the above request failure prompt information may be displayed.

Optionally, when displaying the failure prompt information, the terminal 100 may also display a retransmission control. The retransmission control can be used to trigger the terminal 100 to re-execute satellite selection and satellite alignment operations, and resend the first data packet to the target satellite after successful satellite alignment.

In some embodiments, after the terminal 100 does not receive the second data packet within the preset time threshold, the terminal 100 may re-perform the above satellite selection and star alignment operations, and re-send the first data packet to the target satellite.

In a possible implementation, the terminal 100 may respond to the user's input of querying the mailbox overview, perform satellite selection and satellite alignment operations, and send the service type to the mailbox overview query along the radiation direction of the satellite antenna after the star alignment. A data packet (ie, a profile request) is sent to the target satellite. The target satellite may send the profile request to the satellite network device 200, and the satellite network device 200 may send the third data packet to the terminal 100 through the target satellite based on the profile request. Wherein, the third data packet includes the number of short messages sent to the terminal 100 by other terminals. In this way, since the radiation direction of the satellite antenna of the terminal 100 is aimed at the target satellite, the signal of the target satellite is stronger, and the first data packet can be sent and the third data packet can be received with higher quality.

Exemplarily, after the terminal 100 may receive an input (for example, click) on the query control 313 as shown in FIG. 3B , in response to the input, the terminal 100 may display the query interface 430 as shown in FIG. 4C .

Wherein, the query interface 430 may include a contact display area 431, and the contact display area 431 may include one or more contact options, such as a contact option 431A. Wherein, the contact option may display the name of the contact, etc., and the contact option may be used to trigger the terminal 100 to query the number of short messages sent to the terminal 100 by the contact corresponding to the contact option. The terminal 100 may receive the user's input on the contact option 431A, and in response to the input, display the above-mentioned interfaces shown in FIGS. 3E-3H .

The terminal 100 may send an overview query to the target satellite after aligning to the target satellite. The target satellite may forward the profile query to the satellite network device 200 . The satellite network device 200 may find the number of short messages sent by the contact "Lucy" to the terminal 100 based on the ID number of the contact "Lucy" in the profile query. The satellite network device 200 may send the third data packet including the quantity to the terminal 100 via the target satellite.

After receiving the third data packet, the terminal 100 may display a query interface 440 as shown in FIG. 4D . The query interface 440 may be used to display the results of mailbox profile queries. Here, the query interface 440 may include a query result box 441, and the query result box 441 may be used to prompt the user to specify the number of short messages sent to the terminal 100 by a contact. Optionally, the query interface 441 may also include a query time, which may be used to indicate the time when the user obtains the mailbox profile result. For example, the query result box 441 may display text information: "As of 14:06 Beijing time, the contact 'Lucy' has sent you 3 messages in total".

The above satellite selection and satellite alignment operations are performed so that the first data packet sent to the terminal 100 by other terminals can be received under the condition that the radiation direction of the satellite antenna is aligned with the target satellite. The exemplary interfaces involved in star selection and alignment by the terminal 100 may be the interfaces shown in FIG. 3E-FIG. 3H . For specific descriptions, reference may be made to the above-mentioned embodiments shown in FIG. 3E-FIG. 3H , which will not be repeated here.

Exemplarily, after the terminal 100 is aligned with the satellite successfully, it may receive the first data packet sent by other terminals through the target satellite, and display the satellite message interface 400 as shown in FIG. 4A .

In a possible implementation, after the terminal 100 sends the first data packet to the target satellite, it may display sending prompt information, and the sending prompt information may be used to remind the user that the terminal 100 has sent a service request to the target satellite, that is, remind the user Receiving mailbox profile results.

In some embodiments, after the terminal 100 sends a service request to the target satellite, if the terminal 100 does not receive the third data packet within a preset time threshold, it may display query failure prompt information, which is used to remind the user of query failure. Optionally, when displaying the failure prompt information, the terminal 100 may also display a retransmission control. The retransmission control can be used to trigger the terminal 100 to re-execute satellite selection and satellite alignment operations, and resend the first data packet to the target satellite after successful satellite alignment.

In some embodiments, after the terminal 100 does not receive the third data packet within the preset time threshold, the terminal 100 may re-perform the above satellite selection and star alignment operations, and resend the first data packet to the target satellite.

In a possible implementation manner, the terminal 100 may perform a star selection operation in the background. For example, after receiving the user's input on the sending control 332 as shown in FIG. 3D , the terminal 100 may display the star alignment interface 360 as shown in FIG. 3G in response to the input. For another example, after receiving the user's input on the receiving control 312 as shown in FIG. 3B , the terminal 100 may display the star alignment interface 360 as shown in FIG. 3G in response to the input.

In a possible implementation, after the terminal 100 successfully aligns with the satellite, during the process of sending/receiving the first data packet, due to the attitude change of the terminal 100, the radiation direction of the satellite antenna is not aligned with the target satellite, and the terminal 100 can Displaying deviation prompt information, the deviation prompt information is used to remind the user that the attitude of the terminal 100 deviates from the target satellite, and prompt the user to readjust the attitude of the terminal 100 so that the radiation direction of the satellite antenna is aligned with the target satellite. It should be noted that if the radiation direction of the satellite antenna deviates from the target satellite, the signal strength of the target satellite will decrease, which may cause failure to send the first data packet, or fail to receive the second data packet, or fail to receive the third data packet. The terminal 100 can prompt the user that the terminal has deviated from the direction of the target satellite, so that the user can readjust the posture of the terminal 100 so that the radiation direction of the satellite antenna is realigned with the target satellite, so that the success rate of the terminal 100 can be improved.

Exemplarily, the terminal 100 may display a star alignment interface 500 as shown in FIG. 5 . The star alignment interface 500 is a star alignment interface when the terminal 100 deviates from the direction of the target satellite after the terminal 100 successfully aligns to the star. The star alignment interface 500 includes prompt information 501 , prompt information 502 and prompt information 503 . Wherein, the prompt information 501 may be used to prompt the user that the direction of the terminal 100 deviates from the target satellite, and the user needs to adjust the attitude of the terminal 100 until the radiation direction of the satellite antenna of the terminal 100 is aligned with the target satellite. The prompt information 501 may be a text type prompt information, for example, "The terminal has deviated from the direction of the target satellite, please return as soon as possible and keep stable". For the description of the prompt information 502 and the prompt information 503 , reference may be made to the above description of the prompt information 362 and the prompt information 363 in FIG. 3C , which will not be repeated here.

When the terminal 100 detects that the difference in elevation angle is less than/equal to the second threshold and the difference in azimuth angle is less than/equal to the first threshold, the terminal 100 may display the star alignment interface 370 as shown in FIG. 3H .

In a possible implementation manner, the terminal 100 may acquire geomagnetic data of a location where the terminal 100 is located through a sensor (for example, a magnetometer). And the azimuth of the radiation direction of the satellite antenna of the terminal 100 is acquired based on the geomagnetic data. When the magnetic field strength at the location where the terminal 100 is located is greater than the preset magnetic field strength (for example, 200 ut), the terminal 100 cannot acquire accurate geomagnetic data, that is, the azimuth angle of the terminal 100 cannot be determined. When the magnetic field strength at the location where the terminal 100 is located is greater than the preset magnetic field strength, the terminal 100 can display a calibration prompt message, and the calibration prompt message can be used to prompt the user to perform magnetic field calibration so that the terminal 100 can obtain accurate geomagnetic data and determine the orientation of the terminal 100 horn. In this way, the terminal 100 can accurately acquire geomagnetic data for calculating the azimuth of the terminal 100 through magnetic field calibration.

In some embodiments, the terminal 100 may prompt the user to perform magnetic field calibration by drawing an "8" based on the calibration prompt information. The type of the calibration prompt information may be animation, text, voice, etc.

It should be noted that the reason for drawing "8" to calibrate the magnetic field is that the magnetometer rotates relative to the earth's magnetic field when drawing "8". If the magnetometer has errors, for example, the output of the three axes is different when the same magnetic field is input, then these points will not be on a positive sphere, but will be on an approximate ellipsoid. When there are enough measurement points , the ellipsoid can be fitted, the coefficient of the ellipsoid can be obtained to calculate the measurement error of the magnetometer, and then the compensation can be performed to calibrate the magnetometer.

After the terminal 100 selects the star successfully, it can obtain the geomagnetic data of the current location through the sensor. Before the terminal 100 acquires the geomagnetic data (for example, after the terminal 100 displays the star selection interface 350 shown in FIG. 360), can detect magnetic field strength. When the magnetic field strength is greater than the preset magnetic field strength, the terminal 100 may display a calibration interface 600 as shown in FIG. 6 .

Exemplarily, as shown in FIG. 6 , the calibration interface 600 is a magnetic field calibration interface provided by the terminal 100 . The calibration interface 600 includes calibration prompt information 601 and calibration prompt information 602 . Wherein, the calibration prompt information 601 is used to prompt the user to perform magnetic field calibration. For example, the calibration prompt message 601 is a text prompt message: "Please try to be in an open area, and avoid foreign objects blocking signals within the visible range of sight". Calibration prompt information 602 is used to prompt the user to perform magnetic field calibration by drawing "8". For example, the prompt information 602 may include a prompt text 602A: "the current environment has strong magnetic field interference, please try to draw the character "8" for magnetic field calibration", and a prompt picture 602B: a schematic diagram of drawing the character "8".

When the terminal 100 detects that the user draws the character "8" to perform magnetic field calibration, the terminal 100 may display a star alignment interface 360 as shown in FIG. 3G .

Optionally, when the terminal 100 is in the satellite network, it may perform a magnetic field calibration operation in the background as the user moves. In this way, the terminal 100 can complete the magnetic field calibration before the user sends the first data packet.

In some embodiments, the terminal 100 may prompt the user to perform magnetic field calibration by changing the place where the satellite message is sent based on the calibration prompt information. The type of the calibration prompt information may be animation, text, voice, etc.

After the terminal 100 selects the star successfully, it can obtain the geomagnetic data of the current location through the sensor. Before the terminal 100 acquires the geomagnetic data (for example, after the terminal 100 displays the star selection interface 350 shown in FIG. 360), can detect magnetic field strength. When the magnetic field strength is greater than a preset magnetic field strength (for example, 200 ut), the terminal 100 may display a calibration interface 700 as shown in FIG. 7A .

As shown in FIG. 7A , the calibration interface 700 may include prompt information 701 and a prompt box 702 , wherein the description of the prompt information 701 may refer to the above-mentioned embodiment shown in FIG. 6 , which will not be repeated here. in. The prompt box 702 may include prompt information 702A, a "can move" control 702B and a "cannot move" control 702C. Wherein, the prompt information 702A is used to remind the user that the magnetic field interference at the current location is large, and it is necessary to change to a location with less magnetic field interference (for example, green land, muddy land, etc.) to send the first data packet. For example, the prompt message 702A is: "The current magnetic field interference is relatively large, which has seriously affected the accuracy of star alignment. Please move to areas with low metal minerals such as green land and mud land." The text prompt information.

Wherein, the "unable to move" control 702C can be used to trigger the terminal 100 to directly perform operations of aligning with the satellite and sending the first data packet. The "can be moved" control 702B can be used to trigger the terminal to display an interface that can re-detect the magnetic field strength. For example, after the terminal 100 receives an input (such as a click) for the "can be moved" control 703B, in response to the input, display as follows: Calibration interface 710 in Figure 7B.

As shown in FIG. 7B , the calibration interface 710 may include prompt information 711 and a prompt box 712 , wherein the detailed description of the prompt information 711 / may refer to the embodiment shown in FIG. 6 , which will not be repeated here. The prompt box 712 can be used to prompt the user to retest the magnetic field strength after replacing the zone away from the metal mineral. The prompt box 712 may include a prompt message 712A and a "re-detection" control 712B, wherein the prompt message 712A is: "If at least the metal or mineral zone has been moved, please click re-detection, and the mobile phone will re-detect the current magnetic field interference intensity." The prompt information is used to prompt the user to click the "re-detection" control 712B to trigger the terminal 100 to re-detect the surrounding magnetic field strength after moving to the metal-poor mineral zone. After receiving an input (such as clicking) on the "re-detection" control 712B, in response to the input, the terminal 100 can re-detect the surrounding magnetic field strength, and when the magnetic field strength is greater than the preset magnetic field strength, it will display the display as shown in Figure 7A In the calibration interface 700, when the magnetic field strength is less than/equal to the preset magnetic field strength, the star alignment interface 360 shown in FIG. 3G is displayed, prompting the user to adjust the attitude of the terminal 100 to complete the star alignment.

In a possible implementation manner, when the geographic location of the terminal 100 cannot be changed, the terminal 100 may determine the azimuth and elevation angle of the radiation direction of the satellite antenna of the terminal 100 without acquiring geomagnetic data. For example, the terminal 100 may acquire the azimuth and elevation angle of the radiation direction of the GNSS antenna of the terminal 100 in ground coordinates through the GNSS. The terminal 100 may acquire the azimuth and elevation angle of the radiation direction of the satellite antenna based on the azimuth and elevation angle of the radiation direction of the GNSS antenna. And aim the radiation direction of the satellite antenna at the target satellite.

Exemplarily, when the terminal 100 detects the user's input on the "unmovable" control 702C as shown in FIG. . The terminal 100 may obtain the azimuth and elevation angle of the radiation direction of the satellite antenna of the terminal 100 based on the azimuth and elevation angle of the radiation direction of the GNSS antenna. And calculate the azimuth angle difference between the azimuth angle of the radiation direction of the satellite antenna and the azimuth angle of the satellite transmission link direction, the pitch angle between the pitch angle of the radiation direction of the satellite antenna and the pitch angle of the satellite transmission link direction angle difference. The terminal 100 may display the star alignment interface 360 as shown in FIG. 3G when the difference in azimuth angle is greater than the first threshold, or the difference in elevation angle is greater than the second threshold. The terminal 100 may display the star alignment interface 370 as shown in FIG. 3H when the azimuth angle difference is less than or equal to the first threshold and the elevation angle difference is less than or equal to the second threshold.

It can be understood that all the interfaces mentioned above and the descriptions of the display sequence and display content therein are exemplary descriptions and should not be construed as limitations on the embodiment of the present application. In other implementations, there may also be other implementation manners. For example, for the interface 340 in FIG. 3E , instead of triggering the display through the “send” control 331 in the interface 330 in FIG. To select a star, the interface 340 in FIG. 3E is displayed. In this way, the step of terminal 100 selecting satellites to satellites can be performed at any time before clicking the "send" control 331, for example, before opening the satellite communication application 302, it is detected that the user's operation on the satellite communication control in the drop-down notification bar (such as clicking), in response to this operation, the terminal 100 can select a satellite, and display the interface 340 in FIG. 3E until the selection of the satellite is completed, and perform alignment. After the alignment is successful, the terminal 100 can use the satellite communication application 302 to send a satellite message . For another example, when the terminal can send satellite messages through satellites, an icon can also be displayed in the status bar, and the icon is used to indicate that satellite messages can be sent through satellites.

Next, a specific flow of a transmission control method in a satellite communication system provided by an embodiment of the present application is introduced.

In the transmission control method proposed in the embodiment of the present application, the terminal 100 may determine a target satellite from at least one satellite based on a preset rule. Then the azimuth and elevation angle of the satellite transmission link direction are determined based on the location information of the terminal 100 and the target satellite. And, the azimuth and elevation angle of the radiation direction of the satellite antenna of the terminal 100 in the ground coordinate system may also be determined based on data such as geomagnetic data and attitude data of the terminal 100 . Use the azimuth angle difference between two azimuth angles and the elevation angle difference between two elevation angles to perform star alignment. The radiation direction of the satellite antenna is aligned with the target satellite (that is, the radiation direction of the satellite antenna is the same as the direction of the satellite transmission link).

Fig. 8 shows a schematic flowchart of a transmission control method provided in the embodiment of the present application.

The specific flow of the transmission control method proposed in the embodiment of this application is as follows:

S801, the terminal 100 determines a target satellite based on a preset rule in response to an input of sending a first data packet.

Wherein, the first input may be an input for triggering the terminal 100 to send the first data packet to other terminals, for example, it may be an input for the sending control in the interface 330 shown in FIG. 3D . Or, receiving an input of a second data packet sent to the terminal 100 by another terminal, for example, an input directed to the receiving control in the interface 310 shown in FIG. 3B .

Optionally, the first input may also be any input before the terminal 100 sends the first data packet to other terminals, or any input before receiving the first data packet sent by other terminals to the terminal 100, for example, may is an input for opening the satellite communication application 301 in the interface 300 shown in FIG. 3A described above.

The process of terminal 100 determining the target satellite based on preset rules is as follows:

Mode 1: When the terminal 100 can obtain the signal strength of the satellite, the terminal 100 can obtain the signal strength of each of the detected at least one satellite, and the terminal 100 can determine the signal strength of the at least one satellite with the strongest signal strength The satellite is the target satellite.

When the terminal 100 cannot obtain the signal strength of the satellite, the target satellite can be determined through the following methods 2-4:

Mode 2: The terminal 100 can calculate the beam center distance between the terminal 100 and each satellite based on the latitude and longitude coordinates of the current terminal 100 and the beam centers of each satellite, and select the satellite corresponding to the nearest beam center as the target satellite. Wherein, the latitude and longitude coordinates of the current terminal 100 can be obtained through GNSS. The latitude and longitude of the beam center of each satellite may be pre-stored by the terminal 100 .

When the latitude and longitude of the beam center of each satellite involved in the method 2 is not pre-stored in the terminal 100, the target satellite can be determined through the method 3 and the method 4:

Way 3: The terminal 100 can obtain the historical information of star selection from the database, and query the historical location closest to the current location based on the historical information, and then determine the target satellite through the historical satellite corresponding to the historical location.

Wherein, the database may include the correspondence between historical locations and historical satellites. In the database, the location can be marked with the longitude and latitude information of the historical location, and the satellite can be marked with the label of the historical satellite. And a historical location corresponds to a historical satellite. The historical satellite may be the last satellite used for communication at the historical location. For example, Table 1 shows a possible database example, specifically:

Table 1

As shown in Table 1, the database can store the correspondence between historical locations and historical satellites. For example, in the historical locations corresponding to the latitude and longitude (longitude A, dimension A), the satellite that communicated last time is satellite No. 1.

In a possible implementation, the terminal 100 may perform calculations based on the latitude and longitude coordinates of the current terminal 100 and the latitude and longitude corresponding to all historical locations in the database, determine the distance between the current location and any historical location, and correspond to the historical location with the smallest distance The historical satellites identified as target satellites.

In another possible implementation, the terminal 100 can set a preset distance threshold, and calculate from the latitude and longitude corresponding to the first historical location, when the latitude and longitude corresponding to a historical location is less than the preset distance from the latitude and longitude of the current location threshold, the historical location is the historical location with the smallest distance from the current location. The historical satellite corresponding to the historical location is the target satellite.

In some embodiments, the database of the terminal 100 stores multiple historical satellites corresponding to a historical location, and the satellite communication performance indicators when the terminal 100 and the multiple historical satellites send the first data packet. The terminal 100 may query the historical location closest to the current location based on the historical information, and determine all historical satellites corresponding to the historical location. And from all the historical satellites, the historical satellite with the best communication performance index is determined as the target satellite.

It can be understood that, in addition to recording the correspondence between historical locations and historical satellites, the database can also record the correspondence between historical satellites and communication performance indicators. Wherein, the communication performance index may include carrier-to-noise ratio and the like. It should be noted that a historical location in the database may correspond to at least one historical satellite, and the at least one historical satellite may be any satellite that has communicated with the terminal 100 at the historical location. Alternatively, the at least one historical satellite corresponding to a historical location stored in the database may be any satellite that has communicated with the terminal 100 at the historical location within a specified time (for example, 15 days). Exemplarily, Table 2 shows a possible database example, specifically:

Table 2

As shown in Table 2, the database can store the corresponding relationship between historical locations and historical satellites, as well as the corresponding relationship between historical satellites and communication performance indicators. The satellites are No. 1 satellite and No. 2 satellite. The communication performance index of No. 1 satellite is CNR 1, and the communication performance index of No. 2 satellite is CNR 2. For example, when the terminal 100 determines that the closest historical location is (longitude A, latitude A), it may compare the carrier-to-noise ratio 1 of the No. 1 satellite with the carrier-to-noise ratio 2 of the No. 2 satellite. When the terminal 100 determines that the carrier-to-noise ratio 1 is greater than the carrier-to-noise ratio 2, it determines that the target satellite is the No. 1 satellite.

If the terminal 100 does not pre-store the latitude and longitude of the beam center of each satellite involved in the way 2 and the database involved in the way 3, then the target satellite can be determined through the way 4.

Way 4: The terminal 100 can directly calculate the Euclidean distance between the terminal 100 and any satellite, and select the satellite with the closest Euclidean distance as the target satellite. For example, the terminal 100 can calculate the Euclidean distance from the terminal 100 to any satellite through the timestamp of the navigation message and the speed of light, and select the satellite with the closest Euclidean distance as the target satellite.

S802. Based on the location information of the terminal 100 and the target satellite, the terminal 100 determines the azimuth and elevation angle of the satellite transmission link direction in the ground coordinate system.

Wherein, the location information of the terminal 100 may include, but not limited to, information such as longitude, latitude and altitude of the terminal 100 . The location information of the target satellite may include, but not limited to, the latitude and longitude of the center of the beam of the target satellite, the height of the target satellite, and other information.

Specifically, the terminal 100 may acquire the latitude and longitude of the current location of the terminal 100 through GNSS. The latitude and longitude of the beam center of the target satellite is pre-stored in the terminal 100 .

Wherein, the ground coordinate system may be a three-dimensional coordinate system established with the center of the terminal 100 as the origin, and the sky, the first north direction, and the first east direction as three axes. The celestial direction is the direction in which the center of the earth points to the center of the terminal 100 , the first north direction is the direction of the geographic North Pole, and the first east direction is the east perpendicular to the first north direction.

The direction of the satellite transmission link is a direction in which the center of the terminal 100 points to the target satellite.

The azimuth is the angle between the projection of the satellite transmission link direction on the horizontal plane and the first north direction.

The pitch angle is the angle between the projection of the direction of the satellite transmission link on the horizontal plane and the direction of the satellite transmission link.

FIG. 9 shows a schematic diagram of the azimuth and elevation angles of the satellite transmission link direction in ground coordinates.

为卫星传输链路方向，

为卫星传输链路方向在水平面的投影。a为卫星传输链路方向的方位角，b为卫星传输链路方向的俯仰角。Δu为目标卫星的轨道高度，是预存到终端100中的。终端100可以基于终端100的经纬度以及目标卫星波束中心的经纬度计算得到目标卫星波束中心到东西的距离，该距离为图9中示出的Δn，以及目标卫星波束中心到北西的距离，该距离为图9中示出的Δe。基于对图9的描述介绍：终端100确定出地面坐标系中卫星传输链路方向的方位角和俯仰角的相关计算公式：As shown in FIG. 9 , point P is the center of the terminal 100 , point S is the target satellite, and point Q is the beam center of the target satellite.

is the satellite transmission link direction,

is the projection of the satellite transmission link direction on the horizontal plane. a is the azimuth angle in the direction of the satellite transmission link, and b is the elevation angle in the direction of the satellite transmission link. Δu is the orbital altitude of the target satellite, which is pre-stored in the terminal 100 . The terminal 100 can calculate the distance from the target satellite beam center to the east-west based on the longitude and latitude of the terminal 100 and the longitude and latitude of the target satellite beam center, the distance is Δn shown in FIG. 9 , and the distance from the target satellite beam center to the northwest, the distance is Δe shown in Figure 9. Based on the description of FIG. 9, the terminal 100 determines the relevant calculation formulas for the azimuth and elevation angles of the satellite transmission link direction in the ground coordinate system:

Wherein, formula (1) is used to calculate the azimuth angle of the satellite transmission link direction, and a represents the azimuth angle, see a shown in FIG. 9 . Δe is the distance from the target satellite beam center to NW, see Δe shown in FIG. 9 . Δn is the distance from the center of the target satellite beam to the east-west, see Δn shown in FIG. 9 . Formula (2) is used to obtain the pitch angle of the satellite transmission link direction, b represents the pitch angle, see b shown in FIG. 9 . Δu is the orbit altitude of the target satellite, see Δu shown in FIG. 9 .

S803. Based on the geomagnetic data and attitude data of the terminal 100, the terminal 100 determines the pitch angle and azimuth angle of the reference direction of the terminal 100 in the geomagnetic coordinate system.

Wherein, the geomagnetic data may include data such as magnetic field strength, geomagnetic north direction (also referred to as magnetic north direction), and the like. The terminal 100 may acquire geomagnetic data through a built-in sensor (eg, a magnetometer). Among them, the magnetic field strength is the size of the magnetic field around the terminal 100, which is used to measure whether other geomagnetic data measured (such as the direction of magnetic north) is accurate. When the magnetic field strength is greater than the preset magnetic field strength, the user can be prompted to perform magnetic field calibration through a prompt message so that The magnetic field strength is less than the preset magnetic field strength. For the calibration process, reference may be made to the above-mentioned embodiments shown in FIG. 6 , FIG. 7A and FIG. 7B , which will not be repeated here.

Wherein, the magnetic north direction may be used by the terminal 100 to determine the geomagnetic coordinate system. Wherein, the geomagnetic coordinate system is a three-dimensional coordinate system established with the center of the terminal 100 as the origin, and the sky, the second north, and the second east as three axes. The celestial direction is the direction in which the center of the earth points to the center of the terminal 100 , the second north direction is the direction of the magnetic north pole, and the second east direction is the east perpendicular to the second north direction.

The terminal 100 can detect the attitude data of the terminal in the magnetic north coordinate system through a built-in sensor (for example, a gyroscope sensor, an acceleration sensor, etc.), and determine the pitch angle and orientation of the reference direction of the terminal 100 in the geomagnetic coordinate system according to the attitude data horn.

Wherein, the reference direction of the terminal 100 is a direction parallel to the screen and perpendicular to the top frame, and the azimuth is the angle between the projection of the reference direction of the terminal 100 on the horizontal plane and the second north direction. The pitch angle is an included angle between a projection of the reference direction of the terminal 100 on the horizontal plane and the reference direction of the terminal 100 .

FIG. 10 shows a schematic diagram of the azimuth and elevation angles of the reference direction of the terminal 100 in geomagnetic coordinates.

为终端100的基准方向，

为终端100的基准方向在水平面的投影。α为终端100的基准方向在地磁坐标系中的俯仰角，β终端100的基准方向在地磁坐标系中的方位角。As shown in FIG. 10 , the point P is the center of the terminal 100 , and the geomagnetic coordinates formed by the sky direction, the second north direction, and the second east direction are shown in FIG. 10 .

is the reference direction of the terminal 100,

is the projection of the reference direction of the terminal 100 on the horizontal plane. α is the pitch angle of the reference direction of the terminal 100 in the geomagnetic coordinate system, and β is the azimuth angle of the reference direction of the terminal 100 in the geomagnetic coordinate system.

S804. The terminal 100 determines the azimuth and pitch of the reference direction of the terminal 100 in the ground coordinate system based on the azimuth and pitch angle of the terminal 100's reference direction in the geomagnetic coordinate system, and the magnetic declination between the geomagnetic coordinate system and the ground coordinate system. horn.

The azimuth of the reference direction of the terminal 100 in the ground coordinate system is the included angle between the projection of the reference direction of the terminal 100 on the horizontal plane and the first north direction. The pitch angle is an included angle between a projection of the reference direction of the terminal 100 on the horizontal plane and the reference direction of the terminal 100 .

Wherein, the azimuth and pitch angle of the reference direction of the terminal 100 in the ground coordinate system are respectively called the first north azimuth and the first north pitch angle, and the azimuth and pitch angle of the reference direction of the terminal 100 in the geomagnetic coordinate system They are called the second north azimuth and the second north elevation respectively.

FIG. 11 is a schematic diagram of the azimuth and elevation angles of the reference direction of the terminal 100 in the geomagnetic coordinate system and the ground coordinate system.

The relationship between the first north azimuth and the second north azimuth and the relationship between the first north elevation angle and the second north elevation angle will be described in detail below with reference to FIG. 11 .

As shown in FIG. 11 , both the geomagnetic coordinate system and the ground coordinate system use the celestial direction as one of the three axes of the coordinate system. The horizontal plane is perpendicular to the celestial direction, and the geomagnetic coordinate system is the same as the horizontal plane of the ground coordinate system, so the pitch angle of the reference direction of the terminal 100 in the geomagnetic coordinate system and the ground coordinate is the same, that is, the first north pitch angle and the second north pitch angle are the same . However, there is a magnetic declination between the first north direction and the second north direction, which results in a magnetic declination angle difference between the first north azimuth and the second north direction.

The magnetic declination can be east magnetic declination or west magnetic declination. Among them, the magnetic declination angle of the second north direction relative to the east of the first north direction is positive, which is called the east magnetic declination angle, and the magnetic declination angle of the west direction is negative, called the west magnetic declination angle.

12A and 12B show the relationship between the first north azimuth and the second north azimuth and the magnetic declination.

As shown in FIG. 12A , when the magnetic declination is the west magnetic declination, the first north azimuth=the second north azimuth-|west magnetic declination|.

As shown in FIG. 12B , when the magnetic declination is the east magnetic declination, the first north azimuth=the second north azimuth+|east magnetic declination|.

It can be seen that the azimuth of the reference direction of the terminal 100 in the ground coordinate system is the first north azimuth, and the pitch angle is the same as the azimuth of the reference direction of the terminal 100 in the geomagnetic coordinate system.

S805. The terminal 100 may determine the azimuth angle offset and the pitch angle offset between the radiation direction of the satellite antenna in the ground coordinate system and the reference direction of the terminal 100 based on the pitch angle and azimuth angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system. quantity.

Wherein, the spherical coordinate system of the terminal takes the center of the terminal 100 as the origin O, the reference direction of the terminal 100 is the Z axis, the horizontal direction is the Y axis, and the direction perpendicular to the Y axis in the horizontal plane is the X axis. Wherein, the radiation direction of the satellite antenna is the maximum gain direction of the signal when the antenna transmits the signal, and the signal strength in this direction is the maximum.

Based on the spherical coordinate system of the terminal, the pitch angle and the azimuth angle of the radiation direction of the satellite antenna are pre-stored in the terminal 100 . Wherein, the pitch angle is the included angle between the radiation direction of the satellite antenna and the reference direction of the terminal 100 in the spherical coordinate system of the terminal. The azimuth is the angle between the projection of the radiation direction of the satellite antenna on the XOY plane and the X axis in the terminal spherical coordinate system.

Optionally, the prestored elevation angle and azimuth angle of the radiation direction of the satellite antenna of the terminal 100 may be provided by the manufacturer of the terminal 100 . Specifically, the manufacturer of the terminal 100 can traverse the efficiencies of the transmitting and receiving antennas at various angles of the spherical coordinates in the darkroom of the laboratory, determine the direction with the highest efficiency as the pitch angle and azimuth angle of the radiation direction of the satellite antenna, and store it in the terminal 100 in memory.

FIG. 13 is a schematic diagram of a terminal spherical coordinate system, an azimuth offset, and an elevation offset.

为卫星天线的辐射方向，θ为终端球坐标系中，卫星天线的辐射方向的俯仰角，

为终端球坐标系中，卫星天线的辐射方向的方位角。方位角偏移量为azimuth，俯仰角偏移量为pitch。

为

在Z轴的投影，令

的长度为1。则azimuth及pitch的计算公式为：As shown in FIG. 13 , in the spherical coordinate system of the terminal, the center of the terminal 100 is the origin O, the reference direction of the terminal 100 is the Z axis, and the XOY plane is perpendicular to the Z axis. in the picture

is the radiation direction of the satellite antenna, θ is the pitch angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system,

is the azimuth angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system. The azimuth offset is azimuth, and the elevation offset is pitch.

for

Projected on the Z axis, let

has a length of 1. Then the calculation formula of azimuth and pitch is:

为终端球坐标系中，卫星天线的辐射方向的方位角。In formula (3) and formula (4), θ is the pitch angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system,

is the azimuth angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system.

S806, the terminal 100 can compensate the azimuth and the elevation angle of the reference direction of the terminal 100 in the ground coordinate system based on the azimuth offset and the elevation angle offset, and obtain the elevation of the radiation direction of the satellite antenna in the ground coordinate system angle and azimuth.

Wherein, in the ground coordinate system, the azimuth of the radiation direction of the satellite antenna is the angle between the projection of the radiation direction of the satellite antenna on the horizontal plane and the first north direction. The elevation angle is the included angle between the projection of the radiation direction of the satellite antenna on the horizontal plane and the radiation direction of the satellite antenna.

The terminal 100 adds the azimuth of the reference direction of the terminal 100 in the ground coordinate system to the azimuth offset to obtain the azimuth of the radiation direction of the satellite antenna in the ground coordinate system. The terminal 100 adds the pitch angle of the reference direction of the terminal 100 in the ground coordinate system and the pitch angle offset to obtain the pitch angle of the radiation direction of the satellite antenna in the ground coordinate system.

In a possible implementation, in addition to obtaining the azimuth and elevation angle of the radiation direction of the satellite antenna of the terminal 100 in the ground coordinate system through the methods involved in steps S803 to S806, the terminal 100 can also obtain the azimuth and elevation angles in other ways :

For example, the terminal 100 may acquire the azimuth and elevation angle of the radiation direction of the GNSS antenna of the terminal 100 in ground coordinates through the GNSS. When the GNSS antenna of the terminal 100 and the satellite antenna are the same antenna, the azimuth and elevation angles of the radiation direction of the GNSS antenna are the azimuth and elevation angles of the radiation direction of the terminal 100 in the ground coordinate system.

When the GNSS antenna and the satellite antenna of the terminal 100 are different antennas, the terminal 100 can determine the radiation direction of the satellite antenna in the ground coordinate system based on the pitch angle and azimuth angle of the radiation direction of the satellite antenna of the terminal 100 in the terminal spherical coordinates The azimuth angle offset and the elevation angle offset of the reference direction are shown in step S805. The terminal 100 can also determine the azimuth offset and pitch angle offset between the radiation direction of the GNSS antenna and the reference direction in the ground coordinate system based on the pitch angle and azimuth angle of the radiation direction of the GNSS antenna in the spherical coordinates of the terminal. Where the terminal 100 determines the azimuth offset and pitch angle offset between the radiation direction of the GNSS antenna and the reference direction, refer to the above step S805. The terminal 100 determines the azimuth offset and the pitch angle between the radiation direction of the satellite antenna and the reference direction. The embodiment of the offset will not be repeated here. The terminal 100 can be based on the azimuth angle offset and the elevation angle offset between the radiation direction of the GNSS antenna and the reference direction, the azimuth angle offset and the elevation angle offset between the radiation direction of the satellite antenna and the reference direction, the radiation of the GNSS antenna The pitch angle and azimuth angle of the direction are obtained to obtain the pitch angle and azimuth angle of the radiation direction of the satellite antenna in the ground coordinate system.

S807. The terminal 100 may determine the difference in azimuth angle between the radiation direction of the satellite antenna and the direction of the satellite transmission link based on the pitch angle and azimuth angle of the radiation direction of the satellite antenna in the ground coordinate system, and the azimuth angle and pitch angle of the satellite transmission link direction and pitch angle difference.

For example, the calculation formulas of azimuth difference and pitch difference are as follows:

The azimuth angle difference = the azimuth angle of the radiation direction of the satellite antenna - the azimuth angle of the satellite transmission link direction

Pitch angle difference = pitch angle of the radiation direction of the satellite antenna - pitch angle of the satellite transmission link direction

In a possible implementation, the terminal 100 uses the absolute value of the difference between the azimuth angle of the radiation direction of the satellite antenna in the ground coordinate system and the azimuth angle of the satellite transmission link direction as the azimuth angle deviation value, and utilizes the azimuth angle of the satellite antenna in the ground coordinate system The absolute value of the difference between the pitch angle of the radiation direction of the antenna and the pitch angle of the satellite transmission link direction is used as the pitch angle deviation value.

S808. The terminal 100 determines whether the azimuth angle difference is less than or equal to a first threshold and whether the elevation angle difference is less than or equal to a second threshold.

When the terminal 100 determines that the azimuth angle difference is less than or equal to the first threshold and the elevation angle difference is less than or equal to the second threshold, it determines that the radiation direction of the satellite antenna is aligned with the target satellite at this time, and step S811 may be performed.

Otherwise, the terminal 100 may determine that the radiation direction of the satellite antenna is not aimed at the target satellite at this time, and may perform step S809 and step S810.

S809, the terminal 100 displays deviation prompt information, and the deviation prompt information is used to prompt the user to adjust the attitude of the terminal 100 so that the radiation direction of the satellite antenna is aligned with the target satellite.

At this time, if the radiation direction of the satellite antenna is not aligned with the target satellite, the terminal 100 may display a deviation prompt message to prompt the user to adjust the attitude of the terminal 100, and update the difference in pitch and azimuth until the difference in azimuth is less than or equal to the first threshold and the pitch angle difference is less than or equal to the second threshold, so that the radiation direction of the satellite antenna is aligned with the target satellite.

In a possible implementation manner, the deviation prompt information may include a manner of prompting the user how to adjust the terminal 100 . For example, the prompt information 362 involved in the aforementioned FIG. 3G .

In another possible implementation manner, the deviation prompt information may include a manner of prompting the user how to adjust the terminal 100 . It may also include real-time data such as azimuth angle deviation and elevation angle deviation when aligning with the star, for example, the azimuth angle deviation and elevation angle deviation in the prompt information 363 involved in FIG. 3G .

It can be understood that, in other implementation manners, the deviation prompt information may also include more or less content than the foregoing implementation manners, as long as the purpose of prompting the user to adjust the posture of the terminal 100 can be achieved. Examples are not limited to this.

S810. The terminal 100 receives an input for adjusting the posture of the terminal 100 .

For example, the input for adjusting the posture of the terminal 100 may be an input for the user to adjust the terminal 100 according to the deviation prompt information. After the terminal 100 receives the input to adjust the attitude of the terminal 100, it can re-execute steps S802-S808 to update the pitch difference and the azimuth difference in real time until the azimuth difference is less than or equal to the first threshold and the pitch difference is less than It is equal to the second threshold, that is, the judgment of step S808 is "Yes", so that the radiation direction of the satellite antenna is aligned with the target satellite.

S811. The terminal 100 displays accurate prompt information, and the accurate prompt information is used to prompt the user that the radiation direction of the satellite antenna has been aligned with the target satellite.

The accurate prompt information can be used to prompt the user that the radiation direction of the satellite antenna has been aligned with the target satellite. For example, the accurate prompt information may be the prompt information 371 in FIG. 3H above.

After the radiation direction of the satellite antenna is aligned with the target satellite, the terminal 100 can send the first data packet to other terminals through the target satellite, and can also obtain the second data packet sent to the terminal 100 by other terminals through the target satellite.

It should be noted that the terminal 100 can send the first data packet to other terminals through the target satellite. Specifically, the terminal 100 can send the first data packet to the target satellite along the radiation direction of the satellite antenna, and the target satellite receives the first data packet sent by the terminal 100. After receiving the first data packet, the first data packet can be forwarded to the satellite network device 200, and the satellite network device 200 can send the first data packet to other terminals through the cellular network device 400/satellite 21.

When the terminal 100 receives the second data packet sent to the terminal 100 by other terminals, the terminal 100 may send a service request to the target satellite along the radiation direction of the satellite antenna. After receiving the service request from the terminal 100, the target satellite may forward the service request to the satellite network device 200, and the satellite network device 200 may forward the second data packet to the terminal 100 via the target satellite based on the service request.

In some embodiments, the execution sequence between step S804 and step S806 is not fixed. The terminal 100 can also determine the radiation direction and the pitch angle of the satellite antenna in the geomagnetic coordinate system based on the azimuth and pitch angle of the reference direction of the terminal 100 in the geomagnetic coordinate system and the pitch angle and azimuth angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system. The azimuth angle offset and the elevation angle offset of the reference direction of the terminal 100 are compensated to obtain the elevation angle and the azimuth angle of the radiation direction of the satellite antenna in the geomagnetic coordinate system. Then, based on the magnetic declination of the geomagnetic coordinate system and the ground coordinate system, the azimuth and pitch angle of the reference direction of the terminal 100 in the ground coordinate system are determined.

In some embodiments, before the terminal 100 executes step S803, if the terminal 100 uses a magnetometer to acquire geomagnetic data of the terminal 100 during the star alignment process to calculate the azimuth and elevation angle of the reference direction of the terminal 100 in the ground coordinate system After star alignment is completed, the terminal 100 can detect the surrounding magnetic field strength, and when the magnetic field strength is greater than the preset magnetic field strength, it can prompt the user to perform magnetic field calibration so that the magnetic field strength is smaller than the preset magnetic field strength through a prompt message. In this way, the magnetometer can accurately acquire the geomagnetic data of the computing terminal 100 . Wherein, a possible value of the preset magnetic field strength may be 200ut. For a set of exemplary interfaces involved in this process, reference may be made to the above descriptions of FIG. 6 , FIG. 7A and FIG. 7B .

A transmission control method in a satellite communication system provided in an embodiment of the present application is introduced below.

Fig. 14 shows a schematic flowchart of a transmission control method in a satellite communication system provided in an embodiment of the present application.

As shown in Figure 14, the transmission control method in the satellite communication system includes the following steps:

S1401, the terminal 100 displays a first interface, the first interface includes the selected target satellite among the multiple geostationary orbit satellites and the pitch angle deviation and azimuth angle deviation between the radiation direction of the satellite antenna in the terminal 100 and the direction of the satellite transmission link; Wherein, the satellite transmission link direction is the direction from the location of the terminal 100 to the location of the target satellite.

S1402. The terminal 100 receives a first input for adjusting the posture of the terminal 100.

Wherein, the first input is an input for the user to adjust the posture of the terminal 100 , for example, an input for rotating the terminal 100 to the left hand direction.

S1403. When the terminal 100 determines that the radiation direction of the satellite antenna is aligned with the target satellite, the terminal 100 sends the first data packet to the target satellite.

Wherein, the service type of the first data packet may be a message communication service, or a mailbox profile query service, or a mail message download service.

Specifically related to the terminal 100, displaying the first interface, responding to the user's first input to detect in real time whether the radiation direction of the satellite antenna is aligned with the target satellite, and the specific description of sending the first data packet can refer to the above-mentioned embodiments, and will not be repeated here.

Some possible implementations executed by the terminal 100 are introduced below.

In a possible implementation, before the terminal displays the first interface, the method further includes: the terminal displays a second interface, and the second interface displays a plurality of geostationary orbit satellites; when the terminal determines the target from the plurality of geosynchronous orbit satellites After the satellite is selected, the terminal displays the first mark, which is used to indicate that the target satellite has been selected.

Specifically, reference may be made to the embodiments described above in FIG. 3E and FIG. 3F .

In a possible implementation, the service type of the first data packet is a message communication service; before the terminal displays the first interface, the method further includes: the terminal displays a third interface, and the third interface includes the first message input by the user Content and the first sending control; wherein, the first data packet includes the first message content; the terminal receives the second input for the first sending control;

Displaying the first interface by the terminal specifically includes: displaying the first interface by the terminal in response to the first input.

Specifically, reference may be made to the embodiment described above in FIG. 3D .

In a possible implementation, the service type of the first data packet is a message communication service; before the terminal displays the second interface, the method further includes: the terminal displays a third interface, and the third interface includes the first message input by the user Content and the first sending control; wherein, the first data packet includes the first message content; the terminal receives the second input for the first sending control;

Displaying the second interface by the terminal specifically includes: displaying the second interface by the terminal in response to the second input.

Specifically, reference may be made to the embodiment described above in FIG. 3D .

In a possible implementation manner, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal receives the first application layer receipt;

When the first application layer receipt is used to indicate that the first data packet is successfully received, the terminal displays success prompt information, and the success prompt information is used to prompt the user that the first data packet is successfully sent.

When the first application layer receipt is used to indicate that the first data packet fails to be received, the terminal displays failure prompt information, and the failure prompt information is used to prompt the user that the first data packet fails to be sent.

Specifically, reference may be made to the embodiments described above in FIG. 3I and FIG. 3J .

In a possible implementation, the service type of the first application layer message is a letter message download service; before the terminal displays the first interface, the method further includes: the terminal displays a fourth interface, and the fourth interface includes the first receiving control ; The terminal receives a third input for the first receiving control;

Displaying the first interface by the terminal specifically includes: displaying the first interface by the terminal in response to the third input.

Specifically, reference may be made to the embodiments described above in FIG. 3B and FIG. 3G .

In a possible implementation, the service type of the first application layer message is a letter message download service; before the terminal displays the second interface, the method further includes: the terminal displays a fourth interface, and the fourth interface includes the first receiving control ; The terminal receives a third input for the first receiving control;

Displaying the second interface by the terminal specifically includes: displaying the second interface by the terminal in response to the third input.

Specifically, reference may be made to the embodiments described above in FIG. 3B and FIG. 3E .

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal receives a second data packet, the second data packet includes a second message content, and the second message content is other user equipment The content of the short message sent to the terminal through the target satellite; the terminal displays the content of the second message.

Specifically, reference may be made to the embodiments described above in FIG. 4A and FIG. 4B .

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: when the terminal does not receive the second data packet within the preset time threshold, the terminal displays request failure prompt information, and the request fails The prompt information is used to prompt the user that the sending of the first data packet fails.

Specifically, reference may be made to the embodiments described above in FIG. 4A and FIG. 4B .

In a possible implementation, the service type of the first application layer message is a mailbox profile query service; before the terminal displays the first interface, the method further includes: the terminal displays a fifth interface, and the fifth interface includes the first query control ; The terminal receives a fourth input for the first query control;

Displaying the first interface by the terminal specifically includes: displaying the first interface by the terminal in response to the fourth input.

Specifically, reference may be made to the embodiments described above in FIG. 3B and FIG. 3G .

In a possible implementation, the service type of the first application layer message is a mailbox profile query service; before the terminal displays the second interface, the method further includes: the terminal displays a fifth interface, and the fifth interface includes the first query control ; The terminal receives a fourth input for the first query control;

Displaying the second interface by the terminal specifically includes: displaying the second interface by the terminal in response to the fourth input.

Specifically, reference may be made to the embodiments described above in FIG. 3B and FIG. 3E .

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal receives a third data packet, and the third data packet includes short messages sent to the terminal by other user equipment through the target satellite. quantity information.

Specifically, reference may be made to the embodiment described above in FIG. 4D .

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: when the terminal does not receive the third data packet within the preset time threshold, the terminal displays a query failure prompt message, and the query fails The prompt information is used to prompt the user that the sending of the first data packet fails.

Specifically, reference may be made to the embodiment described above in FIG. 4D .

In a possible implementation, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal sends a fourth data packet to the target satellite, where the service type of the fourth data packet is a mail message download service.

Specifically, reference may be made to the embodiment described above in FIG. 3J .

In a possible implementation manner, after the terminal sends the fourth data packet to the target satellite, the method further includes: the terminal receives a second data packet, the second data packet includes a second message content, and the second message content is other user equipment The content of the short message sent to the terminal through the target satellite; the terminal displays the content of the second message.

Specifically, reference may be made to the embodiment described above in FIG. 3J .

In a possible implementation manner, after the terminal sends the first data packet to the target satellite, the method further includes: the terminal displays sending prompt information, and the sending prompt information is used to remind the user that the terminal has sent the first data packet to the target satellite.

Specifically, reference may be made to the embodiment described in FIG. 3I above.

In a possible implementation, when the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, the method further includes: the terminal displays accurate prompt information, and the accurate prompt information is used to remind the user that the radiation direction of the satellite antenna in the terminal is aligned with the target satellite. quasi-target satellite.

Specifically, reference may be made to the embodiment described above in FIG. 3H .

In a possible implementation manner, the target satellite is the satellite with the strongest signal strength determined by the terminal from the multiple geostationary orbit satellites.

Specifically, reference may be made to the embodiment described above in FIG. 8 .

In a possible implementation manner, the target satellite is the satellite with the closest beam center distance among the multiple geostationary orbit satellites, and the beam center distance is obtained by the terminal based on the longitude and latitude coordinates of the terminal and the longitude and latitude coordinates of the beam center of the geosynchronous orbit satellite.

Specifically, reference may be made to the embodiment described above in FIG. 8 .

In a possible implementation manner, the target satellite is a first historical satellite, and the first historical satellite is a historical satellite corresponding to a first historical location closest to a current location of the terminal in a database of the terminal.

Specifically, reference may be made to the embodiment described above in FIG. 8 .

In a possible implementation manner, the target satellite is a geostationary satellite with the closest European distance to the terminal.

Specifically, reference may be made to the embodiment described above in FIG. 8 .

In a possible implementation, the pitch angle deviation is the difference between the pitch angle in the radiation direction of the satellite antenna and the pitch angle in the satellite transmission link direction in the ground coordinate system, and the azimuth angle deviation is in the ground coordinate system, The difference between the azimuth angle of the radiation direction of the satellite antenna and the azimuth angle of the satellite transmission link direction.

Specifically, reference may be made to the embodiment described above in FIG. 8 .

In a possible implementation manner, the azimuth and elevation angles of the satellite transmission link direction are obtained by the terminal based on the location information of the terminal and the location information of the target satellite.

Specifically, reference may be made to the embodiments described above in FIG. 8 and FIG. 9 .

In a possible implementation manner, the azimuth of the radiation direction of the satellite antenna is determined by the azimuth and azimuth angle offset of the terminal based on the reference direction of the terminal, and the elevation angle of the radiation direction of the satellite antenna is determined by the terminal based on the reference direction of the terminal. The pitch angle and pitch angle offset of the direction are determined; the azimuth offset is determined by the terminal based on the azimuth angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system and the azimuth angle of the terminal's reference direction in the ground coordinate system , the pitch angle offset is determined by the terminal based on the pitch angle of the radiation direction of the satellite antenna in the terminal spherical coordinate system and the pitch angle of the reference direction of the terminal in the ground coordinate system.

Specifically, reference may be made to the embodiments described above in FIG. 8 and FIG. 13 .

In a possible implementation, the azimuth and elevation angle of the terminal's reference direction in the ground coordinate system are the terminal's azimuth and elevation angle in the geomagnetic coordinate system based on the terminal's reference direction and the geomagnetic coordinate system and the ground coordinate system The magnetic declination angle is determined; wherein, the pitch angle and azimuth angle of the reference direction of the terminal in the geomagnetic coordinate system are determined by the terminal based on the geomagnetic data and attitude data of the terminal.

Specifically, reference may be made to the embodiments described above in FIG. 8 , FIG. 10 , FIG. 11 , FIG. 12A , and FIG. 12B .

In a possible implementation, when the terminal determines that the radiation direction of the satellite antenna is not aligned with the target satellite, the method further includes: the terminal displays deviation prompt information, and the deviation prompt information is used to prompt the user to adjust the attitude of the terminal so that the satellite in the terminal The radiation direction of the antenna is aimed at the target satellite.

Specifically, reference may be made to the embodiment described above in FIG. 3G .

In a possible implementation manner, the terminal determines that the radiation direction of the satellite antenna is not aligned with the target satellite, which specifically includes: when the terminal determines that the azimuth angle deviation is greater than the first threshold or the elevation angle deviation is greater than the second threshold, the terminal determines that The radiation direction of the satellite dish is not aimed at the target satellite.

Specifically, reference may be made to the embodiment described above in FIG. 8 .

In a possible implementation manner, the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, which specifically includes: when the azimuth angle deviation is less than or equal to the first threshold and the elevation angle deviation is less than or equal to the second threshold, the terminal determines that The radiation direction of the satellite antenna is aimed at the target satellite.

Specifically, reference may be made to the embodiment described above in FIG. 8 .

The above content elaborates the method provided by the present application in detail. In order to facilitate better implementation of the above solutions of the embodiments of the present application, the embodiments of the present application also provide corresponding devices or equipment.

The embodiment of the present application may divide the terminal 100 into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.

The communication device according to the embodiment of the present application will be described in detail below with reference to FIG. 15 to FIG. 18 .

In the case of using an integrated unit, refer to FIG. 15 , which is a schematic structural diagram of a communication device 1500 provided in an embodiment of the present application. The communication device 1500 may be the terminal 100 in the foregoing embodiments. Optionally, the communication device 1500 may be a chip/chip system, for example, a satellite communication chip or a Beidou communication chip. As shown in FIG. 15 , the communication device 1500 may include a transceiver unit 1510 and a processing unit 1520 .

In one design, the processing unit 1520 can be used to calculate the pitch angle deviation and the azimuth angle deviation in real time.

The processing unit 1520 is further configured to detect whether the radiation direction of the satellite antenna is aimed at the target satellite.

The processing unit 1520 is further configured to generate a data packet whose service type is a message communication service or a letter message download service, or a letter message download service.

The transceiver unit 1510 is configured to send satellite short messages, service requests and profile requests to target satellites.

Optionally, the transceiver unit 1510 may also be configured to perform the functional steps related to sending and receiving performed by the terminal 100 in the method embodiment shown in FIG. 14 above.

Optionally, the processing unit 1520 may also be configured to execute functional steps related to protocol parsing and encapsulation and calculation determination performed by the terminal 100 in the method embodiment shown in FIG. 14 above.

It should be understood that the communication device 1500 in this design can correspondingly perform the method steps performed by the terminal 100 in the foregoing embodiments, and for the sake of brevity, details are not repeated here.

In the case of using an integrated unit, refer to FIG. 16 , which is a schematic structural diagram of a communication device 1600 provided in an embodiment of the present application. The communication apparatus 1600 may be the satellite network device 200 in the foregoing embodiments. Optionally, the communication device 1600 may be a specific network element in the satellite network equipment 200, for example, a network element or multiple network elements in the satellite transceiver station 22, the satellite central station 23, and the satellite short message fusion communication platform 24 combination. As shown in FIG. 16 , the communication device 1600 may include a transceiver unit 1610 and a processing unit 1620 .

In one design, the processing unit 1620 may be configured to obtain the first message content based on the first data packet.

The processing unit 1620 is further configured to obtain a second data packet based on the first data packet and short messages sent by other terminals.

The processing unit 1620 is further configured to obtain a third data packet based on the first data packet and the quantity information of short messages sent by other terminals.

The transceiver unit 1610 may be configured to send the first message content to other terminals.

The transceiver unit 1610 is further configured to send the second data packet or the third data packet to the terminal 100 through the target satellite.

Optionally, the transceiver unit 1610 may also be configured to perform the functional steps related to sending and receiving performed by the satellite network device 200 in the foregoing embodiments.

Optionally, the processing unit 1620 may also be configured to perform functional steps related to protocol parsing and encapsulation and calculation determination performed by the satellite network device 200 in the foregoing embodiments.

It should be understood that the communication device 1600 in this design can correspondingly perform the method steps performed by the satellite network device 200 in the foregoing embodiments, and for the sake of brevity, details are not repeated here.

The terminal 100 and the satellite network device 200 of the embodiment of the present application have been introduced above. It should be understood that any product having the functions of the terminal 100 described in FIG. Products of any form with functions fall within the scope of protection of the embodiments of the present application.

As a possible product form, the terminal 100 described in the embodiment of the present application may be implemented by a general bus architecture.

Referring to FIG. 17 , FIG. 17 is a schematic structural diagram of a communication device 1700 provided by an embodiment of the present application. The communication device 1700 may be the terminal 100, or a device therein. As shown in FIG. 17 , the communication device 1700 includes a processor 1701 and a transceiver 1702 internally connected and communicating with the processor. Wherein, the processor 1701 is a general purpose processor or a special purpose processor or the like. For example, it may be a baseband processor or a central processing unit for satellite communications. The baseband processor of satellite communication can be used to process satellite communication protocols and satellite communication data, and the central processing unit can be used to control communication devices (such as baseband chips, terminals, terminal chips, etc.), execute computer programs, and process computer Program data. The transceiver 1702 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver 1702 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function. Optionally, the communication device 1700 may further include an antenna 1703 and/or a radio frequency unit (not shown in the figure). The antenna 1703 and/or the radio frequency unit may be located inside the communication device 1700, or may be separated from the communication device 1700, that is, the antenna 1703 and/or the radio frequency unit may be remote or distributed.

Optionally, the communication device 1700 may include one or more memories 1704, on which instructions may be stored, the instructions may be computer programs, and the computer programs may be run on the communication device 1700, so that the communication device 1700 executes the above-mentioned Methods described in the Methods Examples. Optionally, data may also be stored in the memory 1704 . The communication device 1700 and the memory 1704 can be set separately or integrated together.

Wherein, the processor 1701, the transceiver 1702, and the memory 1704 may be connected through a communication bus.

In one design, the communication device 1700 can be used to perform the functions of the terminal 100 in the foregoing embodiments: the processor 1701 can be used to perform the functions related to protocol analysis and encapsulation and operation determination performed by the terminal 100 in the embodiment shown in FIG. 15 Steps and/or other processes used in the technology described herein; the transceiver 1702 may be used to execute the functional steps related to the execution of sending and receiving performed by the terminal 100 in the embodiment shown in FIG. 15 and/or used in this article Other procedures for the techniques described.

In any of the above designs, the processor 1701 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together. The above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transmission.

In any of the above designs, the processor 1701 may store instructions, which may be computer programs, and the computer programs run on the processor 1701 to enable the communication device 1700 to execute the method steps performed by the terminal 100 in the above method embodiments. The computer program may be fixed in the processor 1701, and in this case, the processor 1701 may be implemented by hardware.

In an implementation manner, the communication device 1700 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this application can be implemented in integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuitboard, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), p-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 17 . Communications apparatus 1700 may be a stand-alone device or may be part of a larger device. For example, the communication device 1700 may be:

(1) Stand-alone integrated circuits ICs, or chips, or chip systems or subsystems;

(2) A set of one or more ICs, optionally, the set of ICs may also include storage components for storing data and computer programs;

(3) ASIC, such as modem (Modem);

(4) Modules that can be embedded in other devices;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others and so on.

As a possible product form, any network element (for example, satellite transceiver station 22, satellite central station 23, satellite short message fusion communication platform 24) in the satellite network equipment 200 described in the embodiment of the present application can be composed of Generic bus architecture to achieve.

Referring to FIG. 18 , FIG. 18 is a schematic structural diagram of a communication device 1800 provided by an embodiment of the present application. The communication device 1800 may be the satellite network device 200, or a device therein. As shown in FIG. 18 , the communication device 1800 includes a processor 1801 and a transceiver 1802 internally connected and communicating with the processor. Wherein, the processor 1801 is a general purpose processor or a special purpose processor or the like. For example, it may be a baseband processor or a central processing unit for satellite communications. The baseband processor of the satellite communication can be used to process the satellite communication protocol and satellite communication data, and the central processing unit can be used to control the communication device (eg, baseband chip, etc.), execute the computer program, and process the data of the computer program. The transceiver 1802 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver 1802 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function. Optionally, the communication device 1800 may further include an antenna 1803 and/or a radio frequency unit (not shown in the figure). The antenna 1803 and/or the radio frequency unit may be located inside the communication device 1800, or may be separated from the communication device 1800, that is, the antenna 1803 and/or the radio frequency unit may be remote or distributed.

Optionally, the communication device 1800 may include one or more memories 1804, on which instructions may be stored, the instructions may be computer programs, and the computer programs may be run on the communication device 1800, so that the communication device 1800 executes the above-mentioned Methods described in the Methods Examples. Optionally, data may also be stored in the memory 1804 . The communication device 1800 and the memory 1804 can be set separately or integrated together.

Wherein, the processor 1801, the transceiver 1802, and the memory 1804 may be connected through a communication bus.

In one design, the communication device 1800 can be used to perform the functions of the satellite network device 200 in the foregoing embodiments: the processor 1801 can be used to perform the related protocol parsing and encapsulation performed by the satellite network device 200 in the embodiment shown in FIG. 16 and The functional steps determined by the calculation and/or other processes used in the technology described herein; the transceiver 1802 can be used to perform the functional steps related to the execution of the sending and receiving performed by the satellite network device 200 in the embodiment shown in FIG. 16 and/or other processes for the techniques described herein.

In any of the above designs, the processor 1801 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together. The above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transmission.

In any of the above designs, the processor 1801 may store instructions, the instructions may be computer programs, and the computer programs run on the processor 1801 to enable the communication device 1800 to execute the method steps performed by the terminal 100 in the above method embodiments. The computer program may be fixed in the processor 1801, and in this case, the processor 1801 may be implemented by hardware.

The embodiment of the present application also provides a computer-readable storage medium, where computer program code is stored, and when the above-mentioned processor executes the computer program code, the electronic device executes the method in any one of the above-mentioned embodiments.

An embodiment of the present application further provides a computer program product, which, when the computer program product is run on a computer, causes the computer to execute the method in any one of the foregoing embodiments.

The embodiment of the present application also provides a communication device, which can exist in the product form of a chip. The structure of the device includes a processor and an interface circuit. The processor is used to communicate with other devices through a receiving circuit, so that the device performs the aforementioned The method in any of the examples.

The embodiment of the present application also provides a satellite communication system, including a terminal 100 and a satellite network device 200, and the terminal 100 and the satellite network device 200 can execute the method in any of the preceding embodiments.

This application fully introduces the communication function of short messages in the satellite communication system. In addition to the Beidou communication system, it is understandable that other satellite communication systems may also have communication functions that support short messages. Therefore, it is not limited to the Beidou communication system. If other satellite systems also support the short message communication function, the method introduced in this application is also applicable to the communication of other satellite systems.

The steps of the methods or algorithms described in connection with the disclosure of this application can be implemented in the form of hardware, or can be implemented in the form of a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory (Random Access Memory, RAM), flash memory, erasable programmable read-only memory (Erasable Programmable ROM, EPROM), electrically erasable Programmable read-only memory (Electrically EPROM, EEPROM), registers, hard disk, removable hard disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and storage medium can be located in the ASIC. In addition, the ASIC may be located in the core network interface device. Certainly, the processor and the storage medium may also exist in the core network interface device as discrete components.

Those skilled in the art should be aware that, in the above one or more examples, the functions described in this application may be implemented by hardware, software, firmware or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer-readable storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions described in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of the application.

As used in the above embodiments, depending on the context, the term "when" may be interpreted to mean "if" or "after" or "in response to determining..." or "in response to detecting...". Similarly, depending on the context, the phrases "in determining" or "if detected (a stated condition or event)" may be interpreted to mean "if determining..." or "in response to determining..." or "on detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)".

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, optical fiber, DSL) or wireless (eg, infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state hard disk), etc.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments are realized. The processes can be completed by computer programs to instruct related hardware. The programs can be stored in computer-readable storage media. When the programs are executed , may include the processes of the foregoing method embodiments. The aforementioned storage medium includes: ROM or random access memory RAM, magnetic disk or optical disk, and other various media that can store program codes.

Claims (31)

1. A transmission control method in a satellite communication system, characterized in that, comprising: The terminal displays the first interface, the first interface includes the selected target satellite among the multiple geostationary orbit GEO satellites and the pitch angle deviation and azimuth angle deviation between the radiation direction of the satellite antenna in the terminal and the direction of the satellite transmission link ; Wherein, the satellite transmission link direction is the direction from the location of the terminal to the location of the target satellite; The terminal receives a first input for adjusting the posture of the terminal; When the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, the terminal sends the first data packet to the target satellite. 2. The method according to claim 1, wherein, before the terminal displays the first interface, the method further comprises: The terminal displays a second interface, and the second interface displays the plurality of geostationary orbit satellites; After the terminal determines the target satellite from the plurality of geostationary orbit satellites, the terminal displays a first mark, and the first mark is used to indicate that the target satellite has been selected. 3. The method according to claim 1, wherein the service type of the first data packet is a message communication service; before the terminal displays the first interface, the method further comprises: The terminal displays a third interface, and the third interface includes a first message content input by a user and a first sending control; wherein, the first data packet includes the first message content; receiving, by the terminal, a second input for the first send control; The terminal displays the first interface, specifically including: The terminal displays the first interface in response to the first input. 4. The method according to claim 2, wherein the service type of the first data packet is a message communication service; before the terminal displays the second interface, the method further comprises: The terminal displays a third interface, and the third interface includes a first message content input by a user and a first sending control; wherein, the first data packet includes the first message content; receiving, by the terminal, a second input for the first send control; The terminal displays the second interface, specifically including: The terminal displays the second interface in response to the second input. 5. The method according to claim 3 or 4, wherein, after the terminal sends the first data packet to the target satellite, the method further comprises: The terminal receives a first application layer receipt; When the first application layer receipt is used to indicate that the first data packet is successfully received, the terminal displays a success prompt message, and the success prompt message is used to prompt the user that the first data packet is successfully sent; When the first application layer receipt is used to indicate that the first data packet fails to be received, the terminal displays failure prompt information, and the failure prompt information is used to prompt the user that the first data packet fails to be sent. 6. The method according to claim 1, the service type of the first application layer message is a letter message download service; before the terminal displays the first interface, the method further comprises: The terminal displays a fourth interface, where the fourth interface includes a first receiving control; receiving, by the terminal, a third input directed to the first receiving control; The terminal displays the first interface, specifically including: The terminal displays the first interface in response to the third input. 7. The method according to claim 2, the service type of the first application layer message is a letter message download service; before the terminal displays the second interface, the method further comprises: The terminal displays a fourth interface, where the fourth interface includes a first receiving control; receiving, by the terminal, a third input directed to the first receiving control; The terminal displays the second interface, specifically including: The terminal displays the second interface in response to the third input. 8. The method according to claim 6 or 7, after the terminal sends the first data packet to the target satellite, the method further comprises: The terminal receives a second data packet, the second data packet includes second message content, and the second message content is short message content sent to the terminal by other user equipment through the target satellite; The terminal displays the second message content. 9. The method according to claim 6 or 7, after the terminal sends the first data packet to the target satellite, the method further comprises: When the terminal does not receive the second data packet within the preset time threshold, the terminal displays request failure prompt information, and the request failure prompt information is used to prompt the user that the first data packet fails to be sent. 10. The method according to claim 1, wherein the service type of the first application layer message is mailbox profile query service; before the terminal displays the first interface, the method further comprises: The terminal displays a fifth interface, and the fifth interface includes a first query control; the terminal receives a fourth input for the first query control; The terminal displays the first interface, specifically including: The terminal displays the first interface in response to the fourth input. 11. The method according to claim 2, wherein the service type of the first application layer message is a mailbox profile query service; before the terminal displays the second interface, the method further comprises: The terminal displays a fifth interface, and the fifth interface includes a first query control; the terminal receives a fourth input for the first query control; The terminal displays the second interface, specifically including: The terminal displays the second interface in response to the fourth input. 12. The method according to claim 10 or 11, after the terminal sends the first data packet to the target satellite, the method further comprises: The terminal receives a third data packet, where the third data packet includes quantity information of short messages sent to the terminal by other user equipment through the target satellite. 13. The method according to claim 10 or 11, after the terminal sends the first data packet to the target satellite, the method further comprises: When the terminal does not receive the third data packet within the preset time threshold, the terminal displays query failure prompt information, and the query failure prompt information is used to prompt the user that the first data packet fails to be sent. 14. The method according to any one of claims 1-4, after the terminal sends the first data packet to the target satellite, the method further comprises: The terminal sends a fourth data packet to the target satellite, and the service type of the fourth data packet is a mail message download service. 15. The method according to claim 14, after the terminal sends the fourth data packet to the target satellite, the method further comprises: The terminal receives a second data packet, the second data packet includes second message content, and the second message content is short message content sent to the terminal by other user equipment through the target satellite; The terminal displays the second message content. 16. The method according to any one of claims 1-15, wherein after the terminal sends the first data packet to the target satellite, the method further comprises: The terminal displays sending prompt information, where the sending prompt information is used to prompt the user that the terminal has sent the first data packet to the target satellite. 17. The method according to any one of claims 1-16, wherein when the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, the method further comprises: The terminal displays accurate prompt information, and the accurate prompt information is used to prompt the user that the radiation direction of the satellite antenna in the terminal is aligned with the target satellite. 18. The method according to any one of claims 1-17, wherein the target satellite is the satellite with the strongest signal strength determined by the terminal from the plurality of geostationary orbit satellites. 19. The method according to any one of claims 1-17, wherein the target satellite is the satellite with the closest beam center distance among the multiple geostationary orbit satellites, and the beam center distance is the terminal It is obtained based on the latitude and longitude coordinates of the terminal and the latitude and longitude coordinates of the beam center of the geostationary satellite. 20. The method according to any one of claims 1-17, characterized in that, the target satellite is a first historical satellite, and the first historical satellite is in the database of the terminal, which is related to the current satellite of the terminal. The historical satellite corresponding to the first historical location closest to the location. 21. The method according to any one of claims 1-17, characterized in that the target satellite is a geostationary satellite with the closest European distance to the terminal. 22. The method according to any one of claims 1-21, wherein the pitch angle deviation is the difference between the pitch angle of the radiation direction of the satellite antenna and the direction of the satellite transmission link in the ground coordinate system The difference between the pitch angles, the azimuth angle deviation is the difference between the azimuth angle of the radiation direction of the satellite antenna and the azimuth angle of the satellite transmission link direction in the ground coordinate system. 23. The method according to claim 22, wherein the azimuth and elevation angle of the satellite transmission link direction are obtained by the terminal based on the location information of the terminal and the location information of the target satellite of. 24. The method according to claim 22, wherein the azimuth of the radiation direction of the satellite antenna is determined by the terminal based on the azimuth and azimuth offset of the terminal's reference direction, the The pitch angle of the radiation direction of the satellite antenna is determined by the pitch angle and the pitch angle offset of the terminal based on the reference direction of the terminal; wherein, the azimuth offset is determined by the terminal based on the terminal spherical coordinate system The azimuth angle of the radiation direction of the satellite antenna and the azimuth angle of the reference direction of the terminal in the ground coordinate system are determined, and the pitch angle offset is determined by the terminal based on the terminal spherical coordinate system. The pitch angle of the radiation direction of the satellite antenna and the pitch angle of the reference direction of the terminal in the ground coordinate system are determined. 25. The method according to claim 24, wherein the azimuth and elevation angles of the terminal's reference direction in the ground coordinate system are the terminal's reference direction based on the terminal's reference direction in the geomagnetic coordinates system and the magnetic declination angle between the geomagnetic coordinate system and the ground coordinate system; wherein, the pitch angle and azimuth angle of the reference direction of the terminal in the geomagnetic coordinate system are the The terminal is determined based on the geomagnetic data and attitude data of the terminal. 26. The method according to any one of claims 22-25, wherein when the terminal determines that the radiation direction of the satellite antenna is not aligned with the target satellite, the method further comprises: The terminal displays deviation prompt information, and the deviation prompt information is used to prompt the user to adjust the attitude of the terminal so that the radiation direction of the satellite antenna in the terminal is aligned with the target satellite. 27. The method according to claim 26, wherein the terminal determines that the radiation direction of the satellite antenna is not aligned with the target satellite, specifically comprising: When the terminal determines that the azimuth angle deviation is greater than the first threshold or the elevation angle deviation is greater than the second threshold, the terminal determines that the radiation direction of the satellite antenna is not aligned with the target satellite. 28. The method according to any one of claims 22-27, wherein the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite, specifically comprising: When the azimuth angle deviation is less than or equal to a first threshold and the elevation angle deviation is less than or equal to a second threshold, the terminal determines that the radiation direction of the satellite antenna is aligned with the target satellite. 29. A terminal, characterized by comprising: one or more processors, a display screen, and one or more memories; wherein, the display screen, the one or more memories and the one or more processors The one or more memories are used to store computer program codes, the computer program codes include computer instructions, and when the one or more processors execute the computer instructions, the terminal executes the The method of any one of Claims 1-28. 30. A computer-readable storage medium, comprising instructions, wherein when the instructions are run on a terminal, the terminal is made to execute the method according to any one of claims 1-28. 31. A computer program product, characterized in that, when the computer program product is run on the electronic device, the terminal is made to execute the method according to any one of claims 1-28.

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