Radio frequency power and antenna adjusting method and system based on position information

Abstract

The invention provides a radio frequency power and antenna adjusting method and system based on position information, and the method comprises the steps: a wireless communication terminal obtains the position information of itself through a global positioning system GNSS, and periodically reports the position information to a wireless communication base station after completing the self-inspection; the wireless communication base station forwards the received position information to a computing server; the computing server generates a radio frequency power adjustment instruction and an antenna selection and angle adjustment instruction according to all the wireless communication terminals and the position information of the computing server, and sends the radio frequency power adjustment instruction and the antenna selection and angle adjustment instruction to the corresponding wireless communication terminals through the wireless communication base station; and the wireless communication terminal adjusts the transmitting power and selects a target antenna according to the received instruction, and adjusts the angle of the directional antenna. According to the method, the distance between the devices is judged based on the position information, the transmitting power is actively reduced in the near field, and the problem of near-field saturation when a plurality of high-power wireless communication devices work at the same time in a short distance is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically, to a method and system for adjusting radio frequency power and antenna based on location information. Background Technology

[0002] Wireless communication devices mainly consist of a baseband, radio frequency (RF) module, and antenna, which together determine the core performance of the communication device. When multiple wireless communication devices operate simultaneously over a very short distance, near-field saturation occurs, leading to a sharp decline in communication quality. Methods to address near-field saturation generally include reducing transmit power and staggering the communication spectrum. The antenna gain of a wireless communication device is related to its coverage angle; the larger the coverage angle, the lower the antenna gain. Therefore, omnidirectional antennas often have much lower gain than directional antennas. When wireless communication devices operate at extremely long distances, the combined gain of the RF module and antenna must reach its maximum to meet the expected performance requirements.

[0003] Existing wireless communication devices have the following problems in operation:

[0004] 1. When a cluster of unmanned equipment (drones, robots, remote-controlled vehicles, etc.) equipped with high-power radio frequency modules is in the departure and assembly phase, near-field communication saturation may occur, leading to equipment control failure.

[0005] 2. If the communication module of the unmanned equipment is not equipped with a high-power radio frequency module, its communication distance is very limited, making it impossible to complete tasks remotely (such as drone performances);

[0006] 3. When unmanned equipment is in motion, its azimuth angle is constantly changing. If a directional antenna is used, communication is basically impossible. If an omnidirectional antenna is used, the communication distance is reduced due to the low antenna gain. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method and system for adjusting radio frequency power and antenna based on location information.

[0008] A method for adjusting radio frequency power and antenna based on location information according to the present invention includes the following steps:

[0009] Step S1: The wireless communication terminal obtains its own location information through the Global Positioning System (GNSS), and after completing the self-test, periodically reports the location information to the wireless communication base station;

[0010] Step S2: The wireless communication base station forwards the received location information to the computing server;

[0011] Step S3: The computing server generates radio frequency power adjustment instructions and antenna selection and angle adjustment instructions based on the location information of all wireless communication terminals and its own location, and sends them to the corresponding wireless communication terminals through the wireless communication base station.

[0012] Step S4: The wireless communication terminal adjusts the transmission power and selects the target antenna according to the received instructions, and adjusts the angle of the directional antenna.

[0013] Preferably, the process of generating the radio frequency power adjustment command in step S3 includes:

[0014] The computing server determines whether there are two or more wireless communication terminals located below a threshold.

[0015] If present, generate an instruction to reduce the transmission power of the wireless communication terminal that is too close to the target.

[0016] If not, further determine if there is a wireless communication terminal whose transmission power is not at its maximum value. If so, generate an instruction to increase its transmission power to the maximum value.

[0017] Preferably, the threshold is a preset near-field saturation distance threshold between two wireless communication terminals.

[0018] Preferably, the process of generating antenna selection and angle adjustment commands in step S3 includes:

[0019] The calculation server determines whether the distance between the wireless communication terminal and the wireless communication base station is less than a threshold K;

[0020] If the value is less than the threshold K, a command to select an omnidirectional antenna is generated;

[0021] If the value is greater than or equal to the threshold K, further determine whether the directional antenna angle is aligned with the wireless communication base station. If not aligned, generate a command to adjust the antenna servo to the target angle.

[0022] Preferably, the wireless communication terminal includes a baseband communication unit, a power amplifier, an omnidirectional antenna, a directional antenna, and GNSS. The power amplifier is used to adjust the transmission power, and the directional antenna is equipped with an antenna servo to adjust the angle.

[0023] Preferably, the reporting period in step S1 is a preset fixed time interval, which is dynamically adjusted according to the movement speed of the wireless communication terminal.

[0024] Preferably, the threshold K is preset based on the communication requirements of the wireless communication terminal, antenna performance, and environmental interference factors, and can be dynamically updated through a computing server.

[0025] Preferably, the adjustment range for reducing the transmission power of the wireless communication terminal that is too close to the target is: reducing the transmission power to a preset percentage of the current power, wherein the preset percentage is adjusted linearly according to the degree of closeness.

[0026] Preferably, the process of adjusting the antenna servo to the target angle is as follows: the calculation server calculates the azimuth and elevation angles that the directional antenna needs to be aligned with based on the position coordinates of the wireless communication terminal and the base station, generates an angle control signal and sends it to the antenna servo, and the servo drives the directional antenna to rotate to the target angle.

[0027] According to the present invention, a radio frequency power and antenna adjustment system based on location information includes:

[0028] Module M1: The wireless communication terminal obtains its own location information through the Global Positioning System (GNSS), and after completing a self-test, periodically reports the location information to the wireless communication base station;

[0029] Module M2: The wireless communication base station forwards the received location information to the computing server;

[0030] Module M3: The computing server generates radio frequency power adjustment commands and antenna selection and angle adjustment commands based on the location information of all wireless communication terminals and its own location, and sends them to the corresponding wireless communication terminals through the wireless communication base station;

[0031] Module M4: The wireless communication terminal adjusts the transmission power and selects the target antenna according to the received instructions, and adjusts the angle of the directional antenna.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. This invention determines the distance between devices based on location information and actively reduces the transmission power in the near field (such as during the assembly of unmanned devices), effectively solving the near-field saturation problem when multiple high-power wireless communication devices work at close range at the same time. This avoids device control failure caused by a sharp decline in communication quality, and is especially suitable for collaborative operation scenarios such as drone swarms and robot clusters.

[0034] 2. When the distance between devices is far or at an ultra-long distance, the present invention automatically increases the radio frequency power to the maximum value and switches to a high-gain directional antenna, which solves the contradiction of "limited communication distance without a high-power module". It not only ensures the communication performance of remote tasks (such as remote search and rescue by drones and large-scale inspection), but also avoids unnecessary energy waste through dynamic power adjustment.

[0035] 3. This invention dynamically selects the antenna type based on location information: omnidirectional antennas are used at close range to ensure flexible coverage, while directional antennas are switched to at long distances and the angle is adjusted in real time by a server to align with the communication source. This overcomes the communication interruption problem caused by the fixed direction of directional antennas, and avoids the low gain defect of omnidirectional antennas, significantly improving the stability and effective range of long-distance communication.

[0036] 4. By periodically collecting location information and updating and adjusting strategies in real time, this invention enables the system to dynamically respond to changes in distance and direction during device movement (such as changes in the flight trajectory of a drone), maintaining the optimal communication state without human intervention, thus improving the adaptability and reliability of the wireless communication system in dynamic environments.

[0037] 5. Under the premise of meeting communication requirements, this invention reduces unnecessary energy consumption by dynamically reducing near-field transmission power. Especially for battery-powered unmanned equipment (such as drones and portable terminals), it can significantly extend the endurance and increase the effective working time of a single mission. Attached Figure Description

[0038] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0039] Figure 1 This is a diagram of the communication system composition in this invention;

[0040] Figure 2 This is a flowchart of the radio frequency power adjustment process in this invention;

[0041] Figure 3 This is a flowchart of antenna selection and azimuth alignment in this invention. Detailed Implementation

[0042] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0043] This invention provides a method for adjusting radio frequency power and antenna based on location information, the method being based on, for example... Figure 1The system shown consists of multiple wireless communication terminals, a wireless communication base station, and a computing server. Each wireless communication terminal comprises a baseband communication unit, a power amplifier, an omnidirectional antenna, a directional antenna, and a Global Positioning System (GNSS). The wireless communication terminals periodically report their location information obtained from the GNSS to the wireless communication base station. The wireless communication base station forwards this location information to the computing server. The computing server performs a comprehensive assessment based on the location information from all terminals and the base station, generates instructions, and sends these instructions to the wireless communication terminals. The terminals then select the appropriate transmit power and antenna according to the instructions.

[0044] Specifically, refer to Figure 2 and Figure 3 As shown, the adjustment method includes the following steps:

[0045] Step S1: The wireless communication terminal obtains its own location information through the Global Positioning System (GNSS), and after completing the self-test, periodically reports the location information to the wireless communication base station;

[0046] Step S2: The wireless communication base station forwards the received location information to the computing server;

[0047] Step S3: The computing server generates radio frequency power adjustment instructions and antenna selection and angle adjustment instructions based on the location information of all wireless communication terminals and its own location, and sends them to the corresponding wireless communication terminals through the wireless communication base station.

[0048] Step S4: The wireless communication terminal adjusts the transmission power and selects the target antenna according to the received instructions, and adjusts the angle of the directional antenna.

[0049] In one specific implementation, the process of generating the RF power adjustment command in step S3 includes:

[0050] The calculation server determines whether there are two or more wireless communication terminals located below a threshold, which is a preset near-field saturation distance threshold between two wireless communication terminals;

[0051] If present, an instruction is generated to reduce the transmission power of the wireless communication terminal that is too close to the target. The adjustment range for reducing the transmission power of the wireless communication terminal that is too close to the target is: reducing the transmission power to a preset percentage of the current power, wherein the preset percentage is adjusted linearly according to the degree of closeness.

[0052] If not, further determine if there is a wireless communication terminal whose transmission power is not at its maximum value. If so, generate an instruction to increase its transmission power to the maximum value.

[0053] In one specific implementation, the process of generating antenna selection and angle adjustment commands in step S3 includes:

[0054] The calculation server determines whether the distance between the wireless communication terminal and the wireless communication base station is less than a threshold K. The threshold K is preset based on the communication needs of the wireless communication terminal, antenna performance, and environmental interference factors, and can be dynamically updated by the calculation server.

[0055] If the value is less than the threshold K, a command to select an omnidirectional antenna is generated;

[0056] If the value is greater than or equal to the threshold K, it is further determined whether the directional antenna angle is aligned with the wireless communication base station. If not aligned, an instruction is generated to adjust the antenna servo to the target angle. The process of adjusting the antenna servo to the target angle is as follows: the calculation server calculates the azimuth and elevation angles that the directional antenna needs to be aligned with based on the position coordinates of the wireless communication terminal and the base station, generates an angle control signal and sends it to the antenna servo, and the servo drives the directional antenna to rotate to the target angle.

[0057] In one specific implementation, the reporting period in step S1 is a preset fixed time interval, which is dynamically adjusted according to the movement speed of the wireless communication terminal.

[0058] In one specific implementation, before generating instructions, the computing server needs to perform a validity check on the received location information. The validity check includes the integrity of the location information, the rationality of the timestamp, and the legality of the coordinate range.

[0059] The present invention will be further described in detail below with reference to a specific implementation example.

[0060] Emergency search and rescue scenarios involving drone swarms:

[0061] Five medium-sized compound-wing UAVs were equipped with high-power 5G CPEs and both omnidirectional and directional antenna systems. The directional antennas were equipped with motor servos to control the antenna azimuth angle. A 5G base station was installed at the ground command and control center, with a PC connected next to it. The PC was equipped with software systems for adjusting radio frequency power and selecting antennas. The UAVs' built-in navigation systems periodically reported WeChat messages to the command and control center PC via 5G.

[0062] During takeoff, when the distance between drones is less than 100 meters, reduce the 5G transmission power to 10% and select an omnidirectional antenna; when the distance between drones exceeds 100 meters, adjust the terminal transmission power to 100%.

[0063] During the mission execution phase, when a UAV's flight position is more than 7km away from the command and control center, the angle of the directional antenna is adjusted and the antenna is switched to a directional antenna.

[0064] At the end of the mission, when the drone returns and enters within 7km of the command and control center, the drone antenna is selected as an omnidirectional antenna. During the concentrated landing phase of the drone (within 100m), the CPE transmission power is reduced to 10%.

[0065] The present invention also provides a radio frequency power and antenna adjustment system based on location information. The radio frequency power and antenna adjustment system based on location information can be implemented by executing the process steps of the radio frequency power and antenna adjustment method based on location information. That is, those skilled in the art can understand the radio frequency power and antenna adjustment method based on location information as a preferred embodiment of the radio frequency power and antenna adjustment system based on location information.

[0066] A location-based radio frequency power and antenna adjustment system, comprising:

[0067] Module M1: The wireless communication terminal obtains its own location information through the Global Positioning System (GNSS), and after completing a self-test, periodically reports the location information to the wireless communication base station;

[0068] Module M2: The wireless communication base station forwards the received location information to the computing server;

[0069] Module M3: The computing server generates radio frequency power adjustment commands and antenna selection and angle adjustment commands based on the location information of all wireless communication terminals and its own location, and sends them to the corresponding wireless communication terminals through the wireless communication base station;

[0070] Module M4: The wireless communication terminal adjusts the transmission power and selects the target antenna according to the received instructions, and adjusts the angle of the directional antenna.

[0071] Those skilled in the art will understand that, besides implementing the system and its various devices, modules, and units provided by this invention in the form of purely computer-readable program code, the same functions can be achieved entirely through logical programming of the method steps, making the system and its various devices, modules, and units of this invention function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, the system and its various devices, modules, and units provided by this invention can be considered as a hardware component, and the devices, modules, and units included therein for implementing various functions can also be considered as structures within the hardware component; alternatively, the devices, modules, and units for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0072] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A method for adjusting radio frequency power and antenna based on location information, characterized in that, Includes the following steps: Step S1: The wireless communication terminal obtains its own location information through the Global Positioning System (GNSS), and after completing the self-test, periodically reports the location information to the wireless communication base station; Step S2: The wireless communication base station forwards the received location information to the computing server; Step S3: The computing server generates radio frequency power adjustment instructions and antenna selection and angle adjustment instructions based on the location information of all wireless communication terminals and its own location, and sends them to the corresponding wireless communication terminals through the wireless communication base station. Step S4: The wireless communication terminal adjusts the transmission power and selects the target antenna according to the received instructions, and adjusts the angle of the directional antenna.

2. The method for adjusting radio frequency power and antenna based on location information according to claim 1, characterized in that, The process of generating the radio frequency power adjustment command in step S3 includes: The computing server determines whether there are two or more wireless communication terminals located below a threshold. If present, generate an instruction to reduce the transmission power of the wireless communication terminal that is too close to the target. If not, further determine if there is a wireless communication terminal whose transmission power is not at its maximum value. If so, generate an instruction to increase its transmission power to the maximum value.

3. The method for adjusting radio frequency power and antenna based on location information according to claim 2, characterized in that, The threshold is a preset near-field saturation distance threshold between two wireless communication terminals.

4. The method for adjusting radio frequency power and antenna based on location information according to claim 1, characterized in that, The process of generating antenna selection and angle adjustment commands in step S3 includes: The calculation server determines whether the distance between the wireless communication terminal and the wireless communication base station is less than a threshold K; If the value is less than the threshold K, a command to select an omnidirectional antenna is generated; If the value is greater than or equal to the threshold K, further determine whether the directional antenna angle is aligned with the wireless communication base station. If not aligned, generate a command to adjust the antenna servo to the target angle.

5. The method for adjusting radio frequency power and antenna based on location information according to claim 1, characterized in that, The wireless communication terminal includes a baseband communication unit, a power amplifier, an omnidirectional antenna, a directional antenna, and GNSS. The power amplifier is used to adjust the transmission power, and the directional antenna is equipped with an antenna servo to adjust the angle.

6. The method for adjusting radio frequency power and antenna based on location information according to claim 1, characterized in that, The reporting period in step S1 is a preset fixed time interval, which is dynamically adjusted according to the movement speed of the wireless communication terminal.

7. The method for adjusting radio frequency power and antenna based on location information according to claim 4, characterized in that, The threshold K is preset based on the communication requirements of the wireless communication terminal, antenna performance, and environmental interference factors, and can be dynamically updated through a computing server.

8. The method for adjusting radio frequency power and antenna based on location information according to claim 2, characterized in that, The adjustment range for reducing the transmission power of the wireless communication terminal that is too close to the target is: reducing the transmission power to a preset percentage of the current power, wherein the preset percentage is adjusted linearly according to the degree of closeness.

9. The method for adjusting radio frequency power and antenna based on location information according to claim 4, characterized in that, The process of adjusting the antenna servo to the target angle is as follows: the calculation server calculates the azimuth and elevation angles that the directional antenna needs to be aligned with based on the position coordinates of the wireless communication terminal and the base station, generates an angle control signal and sends it to the antenna servo, and the servo drives the directional antenna to rotate to the target angle.

10. A radio frequency power and antenna adjustment system based on location information, characterized in that, include: Module M1: The wireless communication terminal obtains its own location information through the Global Positioning System (GNSS), and after completing a self-test, periodically reports the location information to the wireless communication base station; Module M2: The wireless communication base station forwards the received location information to the computing server; Module M3: The computing server generates radio frequency power adjustment commands and antenna selection and angle adjustment commands based on the location information of all wireless communication terminals and its own location, and sends them to the corresponding wireless communication terminals through the wireless communication base station; Module M4: The wireless communication terminal adjusts the transmission power and selects the target antenna according to the received instructions, and adjusts the angle of the directional antenna.

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