Satellite alignment method and device, terminal equipment and storage medium

Abstract

The invention discloses a satellite alignment method and device, terminal equipment and a storage medium, the method is applied to the terminal equipment, and the method comprises the following steps: obtaining the maximum radiation direction of a satellite antenna in the terminal equipment; determining a held mode of the terminal equipment; determining a compensation direction of the maximum radiation direction according to the held mode; according to the maximum radiation direction and the compensation direction, determining a satellite alignment direction of the terminal device; and performing satellite alignment operation according to the satellite alignment direction.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and more specifically, to a satellite alignment method and apparatus, a terminal device, and a storage medium. Background Art

[0002] Satellite communication is a communication technology that has suddenly become popular in recent years. Due to its good coverage of inaccessible areas of the earth's surface such as non-land, remote mountainous areas, and polar regions, satellite communication will become one of the hot technologies for the next generation of mobile communications.

[0003] Since communication satellites are hundreds to tens of thousands of kilometers above the earth, the long distance causes communication signals to attenuate greatly. In order to obtain high-quality communication effects, satellite alignment is usually required. However, there is still a problem of large alignment errors during the alignment operation. Summary of the invention

[0004] The embodiments of the present application provide a satellite alignment method and apparatus, a terminal device, and a storage medium. The following introduces various aspects of the embodiments of the present application.

[0005] In a first aspect, a satellite alignment method is provided, which is applied to a terminal device, and the method includes: obtaining a maximum radiation direction of a satellite antenna in the terminal device; determining a holding method of the terminal device; determining a compensation direction of the maximum radiation direction according to the holding method; determining a satellite alignment direction of the terminal device according to the maximum radiation direction and the compensation direction; and performing a satellite alignment operation according to the satellite alignment direction.

[0006] In a second aspect, a satellite alignment device is provided, which is applied to a terminal device, and the device includes: an acquisition module, used to acquire the maximum radiation direction of the satellite antenna in the terminal device; a first determination module, used to determine the holding method of the terminal device; a second determination module, used to determine the compensation direction of the maximum radiation direction according to the holding method; a third determination module, used to determine the satellite alignment direction of the terminal device according to the maximum radiation direction and the compensation direction; and a satellite alignment module, used to perform satellite alignment operations according to the satellite alignment direction.

[0007] In a third aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to control the terminal device to execute the method described in the first aspect.

[0008] According to a fourth aspect, a computer-readable storage medium is provided, on which executable code is stored. When the executable code is executed, the method described in the first aspect can be implemented.

[0009] The embodiment of the present application provides a satellite alignment method, including: obtaining the maximum radiation direction of the satellite antenna in the terminal device; determining the holding method of the terminal device; determining the compensation direction of the maximum radiation direction according to the holding method; determining the satellite alignment direction of the terminal device according to the maximum radiation direction and the compensation direction; performing the satellite alignment operation according to the satellite alignment direction. Considering the influence of the user holding the terminal device on the maximum radiation direction of the satellite antenna, this solution obtains the compensation direction according to different holding methods during the satellite alignment process to compensate for the deviation of the maximum radiation direction of the satellite antenna, thereby helping to improve the accuracy of the satellite alignment, and further, improving the quality of satellite communication and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 4 is a system architecture diagram of a satellite communication system to which the embodiments of the present application can be applied.

[0011] Figure 2 It is a schematic diagram of the directional diagram of a satellite antenna provided in one embodiment of the present application.

[0012] Figure 3 It is a flowchart of a satellite alignment method provided in one embodiment of the present application.

[0013] Figure 4 It is a schematic diagram of the position of the left antenna provided in an embodiment of the present application.

[0014] Figure 5 This is an architecture diagram of a radio frequency system inside a terminal device provided in one embodiment of the present application.

[0015] Figure 6 It is a schematic diagram of the maximum radiation direction of a satellite antenna in different states provided by an embodiment of the present application.

[0016] Figure 7 It is a schematic diagram of the coordinates of points on the sphere of the radiation pattern of a satellite antenna provided in one embodiment of the present application.

[0017] Figure 8 It is a schematic diagram of the internal architecture of a terminal device provided in one embodiment of the present application.

[0018] Fig. 9 It is a structural schematic diagram of a star alignment device provided in one embodiment of the present application.

[0019] Fig.10 It is a structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0021] First, the application scenarios involved in the embodiments of the present application are introduced.

[0022] Communication system architecture

[0023] The technical solution of the embodiment of the present application can be applied to non-terrestrial network (NTN) systems, such as satellite communication systems.

[0024] The embodiments of the present application describe various embodiments in conjunction with terminal equipment, wherein the terminal equipment may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

[0025] In the embodiment of the present application, the terminal device may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects, and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer (Pad), a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

[0026] In an embodiment of the present application, the network device may be a satellite, and the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc.

[0027] For example, Figure 1 The following is a schematic diagram of the architecture of a satellite communication system provided in an embodiment of the present application. Figure 1 As shown, the communication system 100 may include a terminal device 110, a satellite 120, a gateway device 130, a base station 140, and a core network 150. The terminal device 110 can communicate with the satellite 120 within the coverage of the satellite 120, the gateway device 130 can communicate with the satellite 120, and the gateway device 130 can communicate with the core network 150 through the base station 140. Among them, the gateway device 130 can be called a fusion message gateway or a satellite fusion message gateway. The gateway device 130 can support the message transmission between the terminal device 110 and the core network 150 under the satellite communication system, and can complete the conversion between the message format of the satellite communication system and the message format of the cellular network. The core network 150 can be, for example, a 5G core network.

[0028] Since communication satellites are hundreds to tens of thousands of kilometers above the earth, the long distance causes communication signals to attenuate significantly. At the same time, the antenna radiation pattern of a terminal device (such as a mobile phone) is usually not a completely regular spherical radiation field. At the same distance, the energy in the maximum radiation direction of the antenna is significantly greater than that in other directions. In order to obtain high-quality communication effects, it is usually necessary to align the maximum radiation direction of the terminal device with the satellite.

[0029] Figure 2 A possible satellite antenna radiation pattern provided in an embodiment of the present application. Figure 2 As shown, the antenna radiation pattern is an irregular spherical radiation field. If its maximum radiation direction can be aimed at the satellite, the terminal device can obtain better communication quality.

[0030] However, in the process of alignment, the relevant technology only considers the radiation field of the satellite antenna in free space, and uses this default free space radiation field to extract the maximum radiation direction parameters as the basic data for the alignment operation. In fact, during use, the user's hand holding the terminal device (such as a mobile phone) will affect the radiation field of the satellite antenna. Taking the mobile phone as an example, there is a difference between the maximum radiation direction of the satellite antenna when the user holds the mobile phone and the maximum radiation direction of the satellite antenna in the free space state. Therefore, when the user holds the mobile phone in hand for alignment, the actual radiation direction is different from the ideal radiation direction (the ideal radiation direction refers to the actual maximum radiation direction of the satellite antenna corresponding to the user holding the mobile phone), which will lead to alignment errors, which in turn leads to the communication between the mobile phone and the satellite not reaching the optimal state, and the user experience is poor.

[0031] In order to solve the above problems, the embodiment of the present application provides a satellite alignment method, including: obtaining the maximum radiation direction of the satellite antenna in the terminal device; determining the holding method of the terminal device; determining the compensation direction of the maximum radiation direction according to the holding method; determining the alignment direction of the terminal device according to the maximum radiation direction and the compensation direction; performing the alignment operation according to the alignment direction. Considering the influence of the user holding the terminal device on the maximum radiation direction of the satellite antenna, this solution obtains the compensation direction according to different holding methods during the alignment process to compensate for the deviation of the maximum radiation direction of the satellite antenna, thereby helping to improve the accuracy of the alignment, and further improve the quality of satellite communications and user experience.

[0032] Combined with the following Figure 3 The satellite alignment method in the embodiment of the present application is described in detail. Figure 3 As shown, the satellite alignment method 300 can be used for a terminal device, and it should be understood that the terminal device can be any type of terminal device mentioned above. The satellite alignment method 300 can include steps: S310-S350.

[0033] In step S310, the maximum radiation direction of the satellite antenna in the terminal device is obtained.

[0034] In some embodiments, the radiation pattern of the satellite antenna can be obtained by testing the over the air (OTA) performance of the satellite antenna; based on the radiation pattern of the satellite antenna, the maximum radiation direction of the satellite antenna can be obtained.

[0035] It can be understood that the maximum radiation direction of the satellite antenna is the maximum radiation direction of the satellite antenna in a free space state.

[0036] The present application does not impose any specific restrictions on the method for obtaining the radiation pattern of the satellite antenna. For example, it can be obtained through laboratory measurements, or obtained by sampling using other automatic methods.

[0037] In step S320, the holding mode of the terminal device is determined.

[0038] The terminal device has four sides except the display plane and the opposite display plane, and the four sides are respectively a top side, a bottom side and two side sides; the two side sides can be divided into a left side and a right side.

[0039] It is understandable that when the user holds the side of the terminal device, the voltage standing wave ratio (VSWR) of the side antenna will change (for example, the VSWR will increase), and at the same time, the resonant frequency of the side antenna will also change (for example, the resonant frequency will shift). On this basis, the holding method of the terminal device can be determined according to the change in the voltage standing wave ratio of the side antenna and / or the change in the resonant frequency of the side antenna. It should be understood that the shift in the resonant frequency of the side antenna may refer to the shift in the center frequency point of the resonant frequency band corresponding to the side antenna.

[0040] In some embodiments, the side antennas may include a left antenna and a right antenna. The left antenna may be one or more antennas on the preset left side, and the right antenna may be one or more antennas on the preset right side.

[0041] The embodiment of the present application does not specifically limit the positions of the left antenna and the right antenna. According to the user's holding habits, the left antenna can be, for example, an antenna on the left side of the terminal device near the bottom edge, such as Figure 4 Of course, the right antenna can be the antenna on the right side of the terminal device close to the bottom edge.

[0042] In some embodiments, if the change in the voltage standing wave ratio of the left antenna is greater than a first threshold, it is determined that the terminal device is held in the left hand; if the change in the voltage standing wave ratio of the right antenna is greater than the first threshold, it is determined that the terminal device is held in the right hand. The first threshold is a threshold value for the change in the voltage standing wave ratio, which can be set as required.

[0043] In other embodiments, if the offset of the resonance frequency of the left antenna is greater than the second threshold, it is determined that the terminal device is held in the left hand; if the offset of the resonance frequency of the right antenna is greater than the second threshold, it is determined that the terminal device is held in the right hand. The second threshold is the offset threshold of the resonance frequency and can be set according to requirements.

[0044] In some embodiments, in order to deepen the understanding of the satellite alignment method in the embodiments of the present application, the following is combined with Figure 5 The following example illustrates the structure of the radio frequency system inside the terminal device. Figure 5As shown, the terminal device may include a radio frequency transceiver 510, a coupler 511 and a side antenna 512. The radio frequency transceiver 510 has a transmitting port Tx and a feedback receiving port FBRx, and the transmitting port Tx is connected to the side antenna 512 to form a radio frequency transmission path. The radio frequency transceiver 510 is used to transmit a radio frequency signal of a first preset frequency band using the radio frequency transmission path; the coupler 511 is located on the radio frequency transmission path (the input port 1 of the coupler 511 is connected to the transmitting port Tx, and the output port 2 of the coupler 511 is connected to the side antenna 512), and the sampling port 3 of the coupler 511 is connected to the feedback receiving port FBRx to form a feedback receiving loop, and the coupler 511 is used to sample the feedback receiving (FBRX) signal corresponding to the radio frequency signal of the first preset frequency band using the feedback receiving loop; on this basis, before determining the holding mode of the terminal device, the voltage standing wave ratio change of the side antenna can also be determined according to the above feedback receiving signal, and the feedback receiving signal can be used to indicate the change in the magnitude of the voltage standing wave ratio. And / or, based on the above feedback reception signal, determine the change of the resonant frequency of the side antenna, that is, the feedback reception signal can be used to indicate the change of the offset of the resonant frequency.

[0045] In some embodiments, the RF transmission path further includes a power amplifier 513, and the feedback receiving loop further includes a power amplifier 514. Of course, duplexers, switch devices, etc. may also be included, which will not be described in detail here.

[0046] It should be noted that the side antenna in the embodiment of the present application may be a cellular network antenna, and the side antenna may be, for example, a metal middle frame antenna.

[0047] Since the cellular network antenna of the terminal device is usually idle in the scenario of satellite communication, the RF signal of the first preset frequency band can be a virtual RF signal generated by a computer. The embodiment of the present application does not specifically limit the first preset frequency band. The first preset frequency band can refer to any RF frequency band supported by the side antenna for signal transmission and reception. The first preset frequency band can be, for example, B3, N78 or Wi-Fi frequency band, etc.

[0048] In step S330, a compensation direction of the maximum radiation direction is determined according to the holding mode.

[0049] In some embodiments, the compensation direction of the maximum radiation direction is determined according to the holding manner of the terminal device and the mapping relationship between the holding manner and the compensation direction of the maximum radiation direction.

[0050] As an example, the maximum radiation direction of the satellite antenna in the three states of free space, left hand holding, and right hand holding can be tested respectively. Further, the direction deviation (i.e., compensation direction) between the maximum radiation direction of the satellite antenna in the left / right hand holding state and the maximum radiation direction of the satellite antenna in the free space state can be calculated. It should be understood that during the satellite alignment process, the corresponding compensation direction can be determined according to the holding method of the terminal device.

[0051] In step S340, the satellite-pointing direction of the terminal device is determined according to the maximum radiation direction and the compensation direction.

[0052] It can be understood that the maximum radiation direction of the satellite antenna in the free space state can be compensated by the compensation direction, so as to eliminate the influence of left / right hand holding on the maximum radiation direction of the satellite antenna in the free space. In other words, the satellite direction can refer to the true maximum radiation direction of the satellite antenna in the left / right hand holding state.

[0053] In step S350, a star alignment operation is performed according to the star alignment direction.

[0054] In some embodiments, during the pointing process, the attitude of the terminal device may be adjusted so that the direction of the transmission link between the terminal device and the target satellite coincides with the pointing direction, thereby achieving the pointing operation.

[0055] Furthermore, the posture of the terminal device may be adjusted so that the azimuth angle of the satellite-pointing direction coincides with the azimuth angle of the transmission link, and the elevation angle of the satellite-pointing direction coincides with the elevation angle of the transmission link.

[0056] It should be noted that the target satellite may refer to a satellite that has been selected by the terminal device. For example, the target satellite may refer to a satellite that is closest to the terminal device.

[0057] According to the above description, it can be seen that during the satellite alignment process, this solution can obtain corresponding compensation directions according to different holding methods to compensate for the maximum radiation direction deviation of the satellite antenna, thereby helping to improve the accuracy of satellite alignment and further improve the satellite communication quality and user experience.

[0058] The above mainly describes the star alignment method. Figure 6-Figure 7 The method for obtaining the compensation direction is described in detail with examples. It can be understood that the compensation direction is obtained in advance and stored in the terminal device. The method for obtaining the compensation direction may include the following steps:

[0059] Step (1): First, the satellite antenna radiation pattern is tested in the free space state, the left hand holding state, and the right hand holding state. Further, the maximum radiation direction of the satellite antenna in these three states (i.e., the free space state, the left hand holding state, and the right hand holding state) can be obtained, such as Figure 6 shown.

[0060] Step (2): Define a three-dimensional spherical coordinate system, and use the equivalent isotropically radiated power (EIRP) (r), azimuth (θ) and elevation (φ) to describe any point on the spherical surface of the satellite antenna's radiation pattern. Based on the test results in step (1), the maximum power point coordinates M (r, θ, φ) in each state can be obtained, as follows: Figure 7 shown.

[0061] Step (3): Assume that in free space, left-hand holding, and right-hand holding, the maximum power points obtained by testing are (r1, θ1, φ1), (r2, θ2, φ2), and (r3, θ3, φ3) respectively.

[0062] Taking the direction of the maximum radiation power point in free space (r1, θ1, φ1) as a reference, the angular difference between the maximum radiation direction in the left-hand holding state and the right-hand holding state and the maximum radiation direction in the free space state can be calculated respectively.

[0063] Assume that the coordinate angle difference in the left hand holding state is (0,θ L ,φ L ), the coordinate angle difference (0,θ R ,φ R ), then θ L =θ2-θ1,φ L =φ2-φ1;θ R =θ3-θ1,φ R =φ3-φ1.

[0064] It should be noted that for the coordinate difference here, only the angle needs to be considered, and the difference in power size r does not need to be compensated, because the compensation direction in (r, θ, φ) only needs θ and φ to determine.

[0065] Step (4): Set (0,θ L ,φ L ), and (0,θ R ,φ R ) is stored in memory, and (0,θ L ,φ L ) corresponds to the left hand holding state, (0,θ R ,φR ) corresponds to the right-hand holding state.

[0066] In some embodiments, when the user is using the terminal device to perform satellite alignment on the satellite alignment APP, if it is detected that the user is holding the satellite with the left hand, the coordinate deviation (0, θ L ,φ L ) to compensate, then the alignment APP will guide the user to use the alignment direction (r1,θ1+θ L ,φ1+φ L ) to perform object operations and substitute θ L =θ2-θ1,φ L =φ2-φ1, thereby achieving that the maximum radiation direction of the satellite antenna when the user is holding it with his left hand is the current actual maximum radiation direction of the satellite antenna (r1, θ2, φ2), rather than the default maximum radiation direction of the satellite antenna in the free space state (r1, θ1, φ1).

[0067] Similarly, if the right hand holding state is detected, the coordinate deviation (0,θ R ,φ R ) to compensate, then the alignment APP will guide the user to use the alignment direction (r1,θ1+θ R ,φ1+φ R ) to perform star alignment and substitute θ R =θ3-θ1,φ R =φ3-φ1, thereby achieving that the maximum radiation direction of the satellite antenna when the user holds it in his right hand is the current actual maximum radiation direction of the satellite antenna (r1,θ3,φ3), rather than the default maximum radiation direction of the satellite antenna in the free space state (r1,θ1,φ1).

[0068] In order to deepen the understanding of the above star alignment method, Figure 8 , the internal structure of the terminal device to which the star alignment method is applied is illustrated in more detail.

[0069] Figure 8 The terminal device in the embodiment of the present application may include a radio frequency transceiver 810, a satellite communication function module 820, a left antenna radio frequency circuit 830, a right antenna radio frequency circuit 840, a sensor 850 and a processor 860.

[0070] The RF transceiver 810 may be used to transmit and receive RF signals of a satellite system, and may also be used to transmit and receive RF signals of a cellular network system.

[0071] The satellite communication function module 820 is connected to the RF transceiver 810 and can be used to perform signal interaction with the target satellite.

[0072] The left antenna RF circuit 830 may include a power amplifier 831, a first coupler 832, a switch device 833, a left antenna 834, a power amplifier 835, and a power amplifier 836. The transmit port Tx1 of the RF transceiver 810 is connected to the input end of the power amplifier 831, the output end of the power amplifier 831 is connected to the input port 1 of the first coupler 832, the output port 2 of the first coupler 832 is connected to the port 1 of the switch device 833, and the port 3 of the switch device 833 is connected to the left antenna, thereby forming a RF transmit path of the left antenna 834. The port 2 of the switch device 833 is connected to the input end of the power amplifier 835, and the output end of the power amplifier 835 is connected to the receive port Rx1 of the RF transceiver 810, thereby forming a RF receive loop of the left antenna 834. The sampling port 3 of the first coupler 832 is connected to the input end of the power amplifier 836, and the output end of the power amplifier 836 is connected to the feedback receiving port FBRx1 of the RF transceiver 810, so as to form a feedback receiving loop of the left antenna 834. The first coupler 832 can be a bidirectional coupler. The power amplifier 835 and the power amplifier 836 can be low noise amplifiers. The switch device 833 can be a single-pole double-throw switch.

[0073] The right antenna RF circuit 840 may include a power amplifier 841, a second coupler 842, a switch device 843, a right antenna 844, a power amplifier 845, and a power amplifier 846. The transmit port Tx2 of the RF transceiver 810 is connected to the input end of the power amplifier 841, the output end of the power amplifier 841 is connected to the input port 1 of the second coupler 842, the output port 2 of the second coupler 842 is connected to the port 1 of the switch device 843, and the port 3 of the switch device 843 is connected to the right antenna, thereby forming a RF transmit path of the right antenna 844. The port 2 of the switch device 843 is connected to the input end of the power amplifier 845, and the output end of the power amplifier 845 is connected to the receive port Rx2 of the RF transceiver 810, thereby forming a RF receive loop of the right antenna 844. The sampling port 3 of the second coupler 842 is connected to the input end of the power amplifier 846, and the output end of the power amplifier 846 is connected to the feedback receiving port FBRx2 of the RF transceiver 810, so as to form a feedback receiving loop of the right antenna 844. The second coupler 842 can be a bidirectional coupler. The power amplifier 845 and the power amplifier 846 can be low noise amplifiers. The switch device 843 can be a single-pole double-throw switch.

[0074] The sensor 850 may be used to obtain the location information of the terminal device. As an example, the sensor 850 may be used to detect the orientation, tilt angle, direction of movement, and other information of the terminal device. The embodiment of the present application does not specifically limit the type of the sensor 850, and the sensor 850 may include, but is not limited to, a global navigation satellite system (GNSS), a compass, a gyroscope, an acceleration sensor, and other sensors.

[0075] It should be noted that the reference direction of the terminal device can be predefined. As an example, a three-dimensional coordinate system of the reference direction of the terminal device can be established. For example, the center of the display screen can be used as the center point, the direction parallel to the top edge of the terminal device can be used as the X axis, the direction parallel to the side edge of the terminal device can be used as the Y axis, and the direction perpendicular to the display screen can be used as the Z axis, so that the posture of the terminal device can be adjusted according to the current position coordinates of the terminal device.

[0076] The processor 860 may be used to send a trigger signal to the RF transceiver in response to the user's satellite alignment instruction before determining the holding mode of the terminal device. The trigger signal may be used to instruct the RF transceiver to send a RF signal of a first preset frequency band, so that the holding mode of the terminal device may be detected using the side antenna.

[0077] The processor 860 may be a general-purpose processor or a special-purpose processor. For example, the processor 860 may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0078] Combine the following Figure 7 , a method for determining the holding method of the terminal device is described in more detail.

[0079] In some embodiments, when the user holds the terminal device in the left hand, the first coupler 832 can be used to sample the FBRX signal corresponding to the radio frequency signal of the first preset frequency band. According to the FBRX signal, it can be determined whether the VSWR of the left antenna 834 changes significantly. If the change in the VSWR of the left antenna 834 is greater than the first threshold, it is determined that the terminal device is held in the left hand. Similarly, when the user holds the terminal device in the right hand, the second coupler 842 can be used to sample the FBRX signal corresponding to the radio frequency signal of the second preset frequency band. According to the FBRX signal, it can be determined whether the VSWR of the right antenna 844 changes significantly. If the change in the VSWR of the right antenna 844 is greater than the first threshold, it is determined that the terminal device is held in the right hand. It should be understood that the first preset frequency band and the second preset frequency band can be the same frequency band or different frequency bands. The first preset frequency band can refer to any radio frequency band supported by the left side for signal transmission and reception, and the second preset frequency band can refer to any radio frequency band supported by the right side for signal transmission and reception.

[0080] In other embodiments, the user's holding state can be sensed by measuring the frequency shift caused by the hand holding the terminal device to the satellite antenna. Because the human hand is a conductor, when it touches the antenna radiator, the resonant frequency of the antenna will shift, such as Figure 8 As shown. The offset of the resonant frequency may refer to the offset of the center frequency point of the resonant frequency band of the antenna. By offsetting the resonant frequency, it is possible to correspond to the position of the hand being held, so that the holding mode of the terminal device can be determined.

[0081] Combine the following Figure 7 The structure of the terminal device in the embodiment of the present invention is used to illustrate the principle of determining the holding method based on the resonant frequency offset in detail. It should be noted that the feedback receiving loop of the left / right antenna can be used to perform a frequency sweep operation, and its working range can cover, for example, 600MHz to 6GHz. The feedback receiving loop can measure the S parameter curve (i.e., S11) within the range of 600MHz to 6GHz by scanning. The principle is as follows:

[0082] (1) In the initialized state, the feedback receiving loop of the left antenna 834 and the feedback receiving loop of the right antenna 844 can be used to scan the free space state respectively, and two S parameter curves can be obtained respectively, namely, the left antenna S11a in free space and the right antenna S11b in free space.

[0083] (2) Record the frequency corresponding to the maximum S11_Max value (absolute value) of S11a and S11b. In this way, the center frequency points of the corresponding resonant frequency bands of the two antennas, Freq(R) and Freq(L), can be obtained.

[0084] (3) During actual use, when the user starts the alignment APP, the user can start scanning the S11 of the left antenna 834 through the feedback receiving loop in the left antenna RF circuit 830, and start scanning the S11 of the right antenna 844 through the feedback receiving loop in the right antenna RF circuit 840, and record the frequency corresponding to the corresponding S11_Max (taking the absolute value). If the frequency offset of the left or right side meets the requirement (the offset exceeds the set threshold), it is determined that the user is currently holding the left antenna 834 or the right antenna 844, and then the corresponding alignment compensation angle parameter is called for compensation, which helps to improve the accuracy of the alignment operation.

[0085] It is understandable that full-band scanning can be achieved through the feedback receiving loop. Even if the frequency deviation of the antenna caused by different hands is inconsistent, the terminal device can still recognize it.

[0086] Continue to see Figure 7 The terminal device may also download the ephemeris information of the target satellite in advance, and then use the processor 860 to calculate the spatial position of the target satellite in real time according to time. After obtaining the position information of the terminal device and the spatial position of the target satellite, the processor 860 may also be used to calculate the transmission link direction between the terminal device and the target satellite.

[0087] In some embodiments, the sensor 850 can pass the perceived parameters to the processor 860, and the processor 860 transmits the relevant direction information to the star tracking APP. The UI on the star tracking APP can guide the user to perform star tracking operations (adjust the posture, azimuth, pitch angle, etc. of the mobile phone), point the actual maximum radiation direction of the satellite antenna to the target satellite in the air, complete the star tracking operation, and obtain the best communication quality.

[0088] From the above content, it can be seen that the holding method of the terminal device is detected (identified as left-hand holding or right-hand holding) through the existing cellular communication circuit (including radio frequency circuit and antenna) on the terminal device, and the satellite alignment APP directly calls the direction parameters corresponding to the holding method to compensate for the deviation of the maximum radiation direction of the satellite antenna caused by the user's holding, thereby achieving accurate satellite alignment operation (making the maximum radiation direction of the terminal device point to the target satellite).

[0089] Combination of the above Figures 1 to 8 The method embodiment of the present application is described in detail. Figures 9 and 10 The device embodiment of the present application is described in detail. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0090] Fig. 9FIG. 9 is a schematic diagram of the structure of a satellite alignment device provided in an embodiment of the present application. The satellite alignment device 900 can be applied to a terminal device, and the satellite alignment device 900 can include: an acquisition module 910, a first determination module 920, a second determination module 930, a third determination module 940 and a satellite alignment module 950.

[0091] The acquisition module 910 is used to obtain the maximum radiation direction of the satellite antenna in the terminal device.

[0092] The first determining module 920 is used to determine the holding mode of the terminal device.

[0093] The second determination module 930 is used to determine a compensation direction of the maximum radiation direction according to the holding manner.

[0094] The third determination module 940 is used to determine the satellite-pointing direction of the terminal device according to the maximum radiation direction and the compensation direction.

[0095] The alignment module 950 is used to perform an alignment operation according to the alignment direction.

[0096] Optionally, the first determination module 920 is used to determine the holding method of the terminal device according to a change in the voltage standing wave ratio of the side antenna and / or a change in the resonant frequency of the side antenna.

[0097] Optionally, the side antenna includes a left antenna and a right antenna, and the first determination module 920 is used to: if the change in the voltage standing wave ratio of the left antenna is greater than a first threshold, determine that the terminal device is held in the left hand; if the change in the voltage standing wave ratio of the right antenna is greater than the first threshold, determine that the terminal device is held in the right hand.

[0098] Optionally, the side antenna includes a left antenna and a right antenna, and the first determination module 920 is used to: if the offset of the resonant frequency of the left antenna is greater than a second threshold, determine that the terminal device is held in the left hand; if the offset of the resonant frequency of the right antenna is greater than the second threshold, determine that the terminal device is held in the right hand.

[0099] Optionally, the terminal device includes: a radio frequency transceiver having a transmitting port and a feedback receiving port, the transmitting port being connected to the side antenna to form a radio frequency transmitting path, and the radio frequency transceiver being used to transmit a radio frequency signal of a first preset frequency band using the radio frequency transmitting path; a coupler located on the radio frequency transmitting path, the sampling port of the coupler being connected to the feedback receiving port to form a feedback receiving loop, and the coupler being used to sample a feedback receiving signal corresponding to the radio frequency signal of the first preset frequency band using the feedback receiving loop; the device also includes: a fourth determination module, being used to determine a change in the voltage standing wave ratio of the side antenna according to the feedback receiving signal before determining a holding method of the terminal device; and / or determining a change in the resonant frequency of the side antenna according to the feedback receiving signal.

[0100] Optionally, the side antenna is a metal middle frame antenna.

[0101] Optionally, the acquisition module 910 is used to: obtain the radiation pattern of the satellite antenna by testing the air download performance of the satellite antenna; and obtain the maximum radiation direction according to the radiation pattern of the satellite antenna.

[0102] Optionally, the second determination module 930 is used to determine the compensation direction of the maximum radiation direction according to the holding manner and a mapping relationship between the holding manner and the compensation direction of the maximum radiation direction.

[0103] Optionally, the alignment module 950 is used to adjust the attitude of the terminal device so that the direction of the transmission link between the terminal device and the target satellite coincides with the alignment direction.

[0104] Optionally, the satellite alignment module 950 is used to: adjust the posture of the terminal device so that the azimuth angle of the satellite alignment direction coincides with the azimuth angle of the transmission link, and the elevation angle of the satellite alignment direction coincides with the elevation angle of the transmission link.

[0105] Combine the following Fig.10 This is an introduction to a terminal device 1000 in an embodiment of the present application. The terminal device 1000 can be used to implement the method described in the method embodiment applied to the terminal device. Fig.10 The dotted box indicates optional items.

[0106] It should be understood that the terminal device 1000 can be applied to any type of terminal device mentioned above.

[0107] The terminal device 1000 may include one or more processors 1010. The processor 1010 may support the terminal device 1000 to implement the method described in the above method embodiment applied to the terminal device.

[0108] The processor 1010 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit. Alternatively, the processor may also be other general-purpose processors, digital signal processors, application-specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0109] The terminal device 1000 may further include one or more memories 1020. The memory 1020 stores a program, which can be executed by the processor 1010 to control the terminal device 1000 to execute the method described in the above embodiment of the method applied to the terminal device. The memory 1020 may be independent of the processor 1010 or integrated in the processor 1010.

[0110] The terminal device 1000 may further include a transceiver 1030. The processor 1010 may communicate with other devices through the transceiver 1030. For example, the processor 1010 may transmit and receive data with other devices through the transceiver 1030.

[0111] The present application also provides a chip in an embodiment, including a processor, which can be used to call and run a computer program from a memory, so that a device equipped with the chip performs the method described in the above method embodiment. It is understood that the processor can be any type of processor mentioned above. It is understood that the memory can be independent of the chip or integrated in the chip.

[0112] The embodiment of the present application also provides a machine-readable storage medium for storing a program, and the program enables a computer to execute the method in each embodiment of the present application.

[0113] The embodiment of the present application also provides a computer program product. The computer program product includes a program. The program enables a computer to execute the method in each embodiment of the present application.

[0114] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, it can 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 a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a machine-readable storage medium, or transmitted from one machine-readable storage medium to another machine-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The machine-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0115] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments of the present disclosure can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0116] In the several embodiments provided in the present disclosure, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0117] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0118] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0119] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A satellite alignment method, characterized in that: Applied to a terminal device, the method comprises: Obtaining the maximum radiation direction of the satellite antenna in the terminal device; Determining a holding mode of the terminal device; Determining a compensation direction of the maximum radiation direction according to the holding manner; Determining the satellite-pointing direction of the terminal device according to the maximum radiation direction and the compensation direction; Perform the star alignment operation according to the star alignment direction.

2. The method according to claim 1, characterized in that The terminal device includes a side antenna, and determining the holding mode of the terminal device includes: The holding manner of the terminal device is determined according to a change in the voltage standing wave ratio of the side antenna and / or a change in the resonant frequency of the side antenna.

3. The method according to claim 2, characterized in that The side antenna includes a left antenna and a right antenna, and determining the holding mode of the terminal device according to a change in the voltage standing wave ratio of the side antenna and / or a change in the resonant frequency of the side antenna includes: If the change in the voltage standing wave ratio of the left antenna is greater than a first threshold, it is determined that the terminal device is held in the left hand; If the change in the voltage standing wave ratio of the right antenna is greater than the first threshold, it is determined that the terminal device is held in the right hand.

4. The method according to claim 2, characterized in that: The side antenna includes a left antenna and a right antenna, and determining the holding mode of the terminal device according to a change in the voltage standing wave ratio of the side antenna and / or a change in the resonant frequency of the side antenna includes: If the offset of the resonance frequency of the left antenna is greater than a second threshold, it is determined that the terminal device is held in the left hand; If the offset of the resonance frequency of the right antenna is greater than the second threshold, it is determined that the terminal device is held in the right hand.

5. The method according to claim 2, characterized in that: The terminal device comprises: A radio frequency transceiver having a transmitting port and a feedback receiving port, wherein the transmitting port is connected to the side antenna to form a radio frequency transmitting path, and the radio frequency transceiver is used to transmit a radio frequency signal of a first preset frequency band using the radio frequency transmitting path; A coupler is located on the RF transmission path, a sampling port of the coupler is connected to the feedback receiving port to form a feedback receiving loop, and the coupler is used to use the feedback receiving loop to sample a feedback receiving signal corresponding to the RF signal of the first preset frequency band; Before determining the holding manner of the terminal device, the method further includes: Determining a change in the voltage standing wave ratio of the side antenna according to the feedback received signal; and / or A change in the resonant frequency of the side antenna is determined according to the feedback received signal.

6. The method according to claim 2, characterized in that The side antenna is a metal middle frame antenna.

7. The method according to claim 1, characterized in that The obtaining of the maximum radiation direction of the satellite antenna in the terminal device includes: By testing the air download performance of the satellite antenna, a radiation pattern of the satellite antenna is obtained; The maximum radiation direction is obtained according to the radiation pattern of the satellite antenna.

8. The method according to claim 1, characterized in that Determining a compensation direction of the maximum radiation direction according to the holding manner includes: The compensation direction of the maximum radiation direction is determined according to the holding manner and a mapping relationship between the holding manner and the compensation direction of the maximum radiation direction.

9. The method according to claim 1, characterized in that: Performing a star alignment operation according to the star alignment direction includes: The attitude of the terminal device is adjusted so that the direction of the transmission link between the terminal device and the target satellite coincides with the satellite-pointing direction.

10. The method according to claim 9, characterized in that The step of adjusting the attitude of the terminal device so that the direction of the transmission link between the terminal device and the target satellite coincides with the satellite-pointing direction includes: The posture of the terminal device is adjusted so that the azimuth angle of the satellite-pointing direction coincides with the azimuth angle of the transmission link, and the elevation angle of the satellite-pointing direction coincides with the elevation angle of the transmission link.

11. A star alignment device, characterized in that: The device is applied to a terminal device, and the device includes: An acquisition module, used to acquire the maximum radiation direction of the satellite antenna in the terminal device; A first determining module, used to determine the holding mode of the terminal device; A second determination module, configured to determine a compensation direction of the maximum radiation direction according to the holding manner; A third determination module is used to determine the satellite-pointing direction of the terminal device according to the maximum radiation direction and the compensation direction; The satellite alignment module is used to perform a satellite alignment operation according to the satellite alignment direction.

12. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, and the processor being used to call and run the computer program stored in the memory to control the terminal device to execute the method as described in any one of claims 1 to 10.

13. A computer-readable storage medium having executable code stored thereon, characterized in that: The code is used to implement the method according to any one of claims 1 to 10.

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