Signal power adjusting method, system and equipment of reference station and medium

Abstract

Disclosed are a signal power adjustment method, system, device and medium for a reference station, the method being suitable for a reference station connected with a plurality of mobile stations, the method comprising: sending a LoRa signal to a plurality of mobile stations at the same time according to a preset transmission power, so that each mobile station calculates a sensitivity gain value according to the LoRa signal, the spreading factors of the mobile stations are different from one another; and determining a corresponding target adjustment power according to the sensitivity gain value fed back by each mobile station, and adjusting the communication power of each mobile station to the target adjustment power. According to the method, the signal transmitting power of the mobile stations with different spreading factors can be determined and regulated, the contradiction that the power consumption of a high-spreading-factor user is too high and the reliability of a low-spreading-factor user is insufficient is effectively balanced on the premise of ensuring that all users reach the target communication reliability, remarkable optimization of the total power consumption of the system is realized, and the system reliability is improved. And meanwhile, the self-adaptive capability and the overall energy efficiency of the network in a complex channel environment are improved.

Description

Technical Field

[0001] This invention relates to the technical field of power adjustment in low-power wide area networks, and more particularly to a method, system, device, and medium for adjusting the signal power of a reference station. Background Technology

[0002] LoRa (Long Range) technology, as a low-power wide-area network (LPWAN) technology, has been widely used in the Internet of Things (IoT) field in recent years. Its core technology is based on spread spectrum modulation, which achieves a balance between communication distance, data rate, and power consumption through different spreading factors (SF). A higher spreading factor can provide a longer communication distance and better anti-interference capability, but correspondingly reduces the data transmission rate and increases power consumption; while a lower spreading factor can achieve a higher data rate and lower power consumption, but the communication distance and reliability will be reduced accordingly.

[0003] To allocate different spreading factors based on communication distance, one common method is to pre-determine factors such as distance and channel conditions for different communication devices at the base station, and then allocate different spreading factors accordingly. Devices farther from the base station are assigned higher spreading factors to ensure communication reliability, while devices closer to the base station are assigned lower spreading factors to improve data transmission efficiency. During communication, signals are transmitted using a fixed signal power to achieve remote communication between multiple devices.

[0004] However, the above method has the following technical problems: user equipment using a high spreading factor needs to consume more power to maintain communication, while users using a low spreading factor have lower power consumption, but communication reliability may not be guaranteed when channel conditions deteriorate; moreover, communication with a fixed signal power will result in redundant power consumption of the low spreading factor to avoid excessive power consumption of the high spreading factor, which will lead to power imbalance and increase the overall energy consumption of the base station. Summary of the Invention

[0005] This invention provides a method, system, device, and medium for adjusting the signal power of a reference station, which can solve the technical problems of power imbalance and high energy consumption caused by communication with fixed power in the prior art.

[0006] A first aspect of this invention provides a method for adjusting the signal power of a base station, the method being applicable to a base station connected to a plurality of mobile stations, the method comprising: LoRa signals are simultaneously transmitted to several mobile stations according to a preset transmission power, so that each mobile station calculates a sensitivity gain value based on the LoRa signal, wherein the spreading factor of each mobile station is different. The target adjustment power is determined based on the sensitivity gain value fed back by each mobile station, and the communication power of each mobile station is adjusted to the target adjustment power.

[0007] In conjunction with the first aspect, in one implementation, the step of simultaneously transmitting LoRa signals to a plurality of mobile stations according to a preset transmission power includes: Assign a corresponding spreading factor to each mobile station based on the communication distance of each mobile station; The preset transmission power is determined based on the number of spreading factors and the preset total power, and the LoRa signal corresponding to each mobile station is constructed using the sensitivity threshold corresponding to each spreading factor. Simultaneously, a corresponding LoRa signal is sent to each of the mobile stations according to the preset transmission power.

[0008] In conjunction with the first aspect, in one implementation, the step of allocating a corresponding spreading factor to each mobile station based on the communication distance of each mobile station includes: Differential correction data is sent to each of the aforementioned mobile stations. The differential correction data is generated by packaging the original observation data and reference coordinates based on a preset standard format. The real-time location of each mobile station is obtained, and the communication distance of each mobile station is determined based on the real-time location. A corresponding spreading factor is assigned to each mobile station based on the magnitude of the communication distance.

[0009] In conjunction with the first aspect, in one implementation, determining the corresponding target adjustment power based on the sensitivity gain value fed back by each of the mobile stations, and adjusting the communication power of the corresponding mobile station using the target adjustment power, includes: An average gain value is determined using several of the aforementioned sensitivity gain values, and a target adjustment power corresponding to each of the mobile stations is determined using the sensitivity gain value of each mobile station and the average gain value. The real-time communication power of each of the mobile stations is adjusted to the target adjustment power.

[0010] A second aspect of this invention provides a method for adjusting the signal power of a base station, the method being applicable to a mobile station connected to a base station, the method comprising: Receive the LoRa signal sent by the base station according to the preset transmission power; The sensitivity gain value is determined based on the LoRa signal; The sensitivity gain value is fed back to the reference station so that the reference station can determine the corresponding target adjustment power based on the sensitivity gain value and adjust the preset transmission power to the target adjustment power.

[0011] In conjunction with the second aspect, in one implementation, determining the sensitivity gain value based on the LoRa signal includes: Extract the sensitivity threshold corresponding to the spreading factor from the LoRa signal and determine the actual sensitivity value for receiving the LoRa signal; The difference between the actual sensitivity value and the sensitivity threshold is calculated to obtain the sensitivity gain value.

[0012] A third aspect of the present invention provides a signal power adjustment system for a base station, the system comprising: a base station and a plurality of mobile stations, wherein the base station communicates with the plurality of mobile stations respectively; The reference station performs the signal power adjustment method described above; The mobile station performs the signal power adjustment method of the base station as described above.

[0013] In conjunction with the third aspect, in one implementation, the base station includes an interconnected base station GNSS receiver and a base station LoRa radio. The mobile station includes a mobile GNSS receiver and a mobile LoRa radio that are interconnected; The base station LoRa radio and the mobile LoRa radio communicate wirelessly.

[0014] Compared to existing technologies, the signal power adjustment method, apparatus, device, and medium for a reference station provided in this invention offer the following advantages: This invention can simultaneously transmit LoRa signals to several mobile stations based on a preset transmission power, enabling each mobile station to calculate a sensitivity gain value based on the LoRa signal; the target adjustment power is determined based on the sensitivity gain value fed back by each mobile station, and the communication power of each mobile station is adjusted to the target adjustment power. This invention can determine and regulate the signal transmission power of mobile stations with different spreading factors. While ensuring all users achieve the target communication reliability, it effectively balances the contradiction between excessive power consumption of high spreading factor users and insufficient reliability of low spreading factor users, achieving significant optimization of the total system power consumption, and simultaneously improving the network's adaptability and overall energy efficiency in complex channel environments. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating a method for adjusting the signal power of a reference station according to an embodiment of the present invention; Figure 2 This is an operation flowchart of a signal power adjustment method for a reference station provided in an embodiment of the present invention; Figure 3This is a flowchart illustrating a method for adjusting the signal power of a reference station according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a signal power adjustment device for a reference station according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a signal power adjustment device for a reference station according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a signal power adjustment system for a reference station according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a base station and a rover station provided in an embodiment of the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] LoRa (Long Range) technology, as a low-power wide-area network (LPWAN) technology, has been widely used in the Internet of Things (IoT) field in recent years. Its core technology is based on spread spectrum modulation, which achieves a balance between communication distance, data rate, and power consumption through different spreading factors (SF). A higher spreading factor can provide a longer communication distance and better anti-interference capability, but correspondingly reduces the data transmission rate and increases power consumption; while a lower spreading factor can achieve a higher data rate and lower power consumption, but the communication distance and reliability will be reduced accordingly.

[0018] To allocate different spreading factors based on communication distance, one common method is to pre-determine factors such as distance and channel conditions for different communication devices at the base station, and then allocate different spreading factors accordingly. Devices farther from the base station are assigned higher spreading factors to ensure communication reliability, while devices closer to the base station are assigned lower spreading factors to improve data transmission efficiency. During communication, signals are transmitted using a fixed signal power to achieve remote communication between multiple devices.

[0019] However, the above method has the following technical problems: user equipment using a high spreading factor needs to consume more power to maintain communication, while users using a low spreading factor have lower power consumption, but communication reliability may not be guaranteed when channel conditions deteriorate; moreover, communication with fixed signal power will result in redundant power consumption of low spreading factor and excessive power consumption of high spreading factor, which will lead to power imbalance and increase the overall energy consumption of the base station.

[0020] To address the aforementioned issues, the following detailed description and explanation will be provided through specific embodiments of a signal power adjustment method, apparatus, device, and medium for a reference station provided in this application.

[0021] To address the power imbalance and high energy consumption issues arising from fixed-power communication in existing technologies, referencing Figure 1 The diagram shows a flowchart of a signal power adjustment method for a reference station according to an embodiment of the present invention.

[0022] In one embodiment, the signal power adjustment method of the base station is applicable to the base station, which can communicate with multiple mobile stations.

[0023] As an example, the signal power adjustment method for the reference station may include: S11. Simultaneously transmit LoRa signals to several mobile stations according to a preset transmission power, so that each mobile station calculates a sensitivity gain value based on the LoRa signal, wherein the spreading factor of each mobile station is different.

[0024] In one embodiment, the base station may determine a preset transmission power, which is the power used for communicating with the mobile station.

[0025] Before power adjustment, LoRa signals can be sent simultaneously to several mobile stations at a uniform preset transmission power. Each mobile station can calculate its own sensitivity gain value based on the LoRa signal and feed the sensitivity gain value back to the base station.

[0026] It should be noted that each of the several mobile stations transmitting LoRa signals simultaneously has its own corresponding spreading factor, and these spreading factors are all different from each other.

[0027] Because LoRa signals with different spreading factors are orthogonal to each other, it is possible to transmit LoRa signals with different spreading factors simultaneously without interference between them. This characteristic can be utilized to communicate with different mobile stations simultaneously using LoRa signals with different spreading factors.

[0028] Since there are one or more mobile stations involved in the communication, in order to determine a preset transmission power for communication based on the number of mobile stations, as an example, the step of simultaneously sending LoRa signals to several of the mobile stations according to the preset transmission power may include the following sub-steps: S111. Assign a corresponding spreading factor to each mobile station according to the communication distance of each mobile station.

[0029] S112. Determine the preset transmission power based on the number of spreading factors and the preset total power, and construct the LoRa signal corresponding to each mobile station using the sensitivity threshold corresponding to each spreading factor.

[0030] S113. Simultaneously send the corresponding LoRa signal to each of the mobile stations according to the preset transmission power.

[0031] In one embodiment, since LoRa signals have six spreading factors SF∈{7, 8, 9, 10, 11, 12}, different combinations of spreading factors can be selected based on actual needs (number of mobile stations, communication distance, etc.). This means any combination of factors 1-G can be chosen for communication, where G∈{1, 2, 3, 4, 5, 6}. The number and allocation of G used depends on the number of users and the transmission distance. If there are many users, more LoRa signals can be used simultaneously in the spreading factor combinations; if the transmission distance is long, LoRa signals with larger spreading factors should be prioritized.

[0032] Since different spreading factors correspond to different communication distances, the communication distance of each mobile station can be determined first, and then a corresponding spreading factor can be assigned to each mobile station based on its communication distance. For example, if there are three mobile stations with communication distances of 20 meters, 10 meters, and 2 meters respectively, then the mobile station with the longest communication distance of 20 meters is assigned a spreading factor of 12; the mobile station with the average communication distance of 10 meters is assigned a spreading factor of 10; and finally, the mobile station with the shortest communication distance of 2 meters is assigned a spreading factor of 6.

[0033] Next, the preset transmission power can be determined based on the number of spreading factors used and the preset total power, and the sensitivity threshold corresponding to each spreading factor can be determined. The LoRa signal corresponding to each mobile station can then be constructed using the sensitivity threshold.

[0034] Specifically, each spreading factor has a detection sensitivity threshold. The sensitivity thresholds for different spreading factors can be set as shown in the table below: In one embodiment, by preset transmission power, the initial frequency of each LoRa signal can be set to the same value. Specifically, the preset transmission power can be... That is, the ratio of the preset total power to the number of spreading factors, where the preset total power is P0.

[0035] Next, the base station can simultaneously transmit the corresponding LoRa signal to each mobile station according to a preset transmission power. Referring to the example above, assuming there are three mobile stations, the base station can simultaneously transmit the corresponding LoRa signal to all three mobile stations according to the preset transmission power.

[0036] To determine the real-time distance of each mobile station, in an optional embodiment, the process of assigning a corresponding spreading factor to each mobile station based on its communication distance may include the following sub-steps: S1111. Send differential correction data to each of the mobile stations. The differential correction data is generated by packaging the original observation data and the reference coordinates based on a preset standard format.

[0037] S1112. Obtain the real-time location of each mobile station and determine the communication distance of each mobile station based on the real-time location.

[0038] S1113. Assign a corresponding spreading factor to each of the mobile stations according to the magnitude of the communication distance.

[0039] In one embodiment, the GNSS receiver at the base station receives satellite data and transmits the received observation equations (i.e., differential correction data) to the mobile station via a LoRa radio. Upon receiving the differential correction data, the LoRa radio at the mobile station transmits it to the GNSS receiver, prompting the mobile station to perform corrected positioning calculations based on the preset differential correction data. This yields accurate real-time positioning coordinates for the mobile station, which are then used to calculate the communication distance for each mobile station.

[0040] The base station packages the raw observation data it receives (such as pseudorange and carrier phase) and the base station's precise coordinates into a standard format (most commonly the RTCM protocol) to obtain differential correction data, and then sends it to the rover station.

[0041] S12. Determine the corresponding target adjustment power based on the sensitivity gain value fed back by each mobile station, and adjust the communication power of each mobile station to the target adjustment power.

[0042] In one embodiment, after receiving the sensitivity gain value fed back by each mobile station, a target adjustment power corresponding to each mobile station can be determined based on the sensitivity gain value fed back by each mobile station. Then, the communication power of each mobile station is adjusted to the target adjustment power.

[0043] As explained above, each mobile station has a different spreading factor, and mobile stations with different spreading factors use different power for communication. The target adjustment power required for communication by each mobile station can be determined by the sensitivity gain value fed back by each mobile station, and each mobile station obtains the corresponding target adjustment power.

[0044] Because the spreading factor of LoRa technology is related to communication distance, data rate, and power consumption: a high spreading factor results in a longer communication distance and stronger anti-interference capabilities, but also higher power consumption and lower data rate; a low spreading factor results in lower power consumption and higher data rate. Adjusting the power according to the target obtained for each mobile station and communicating with each station allows the power to match the actual operating status of each station, avoiding power imbalances. This effectively improves resource utilization and power control accuracy, and reduces the overall energy consumption of the base station.

[0045] In order to determine the target adjustment power required for communication of each mobile station based on the sensitivity gain value fed back by each mobile station, in an optional embodiment, the step of determining the corresponding target adjustment power based on the sensitivity gain value fed back by each of the mobile stations, and adjusting the communication power of the corresponding mobile station using the target adjustment power, may include the following sub-steps: S121. An average gain value is determined using several of the aforementioned sensitivity gain values, and a target adjustment power corresponding to each of the mobile stations is determined using the sensitivity gain value of each mobile station and the average gain value.

[0046] S122. Adjust the real-time communication power of each mobile station to the target adjustment power.

[0047] Specifically, there are several connected mobile stations. After obtaining the sensitivity gain value fed back by each mobile station, several sensitivity gain values ​​can be obtained. The average value is obtained by calculating the average of these sensitivity gain values.

[0048] Specifically, the average gain value can be calculated as follows: ; In the above formula, This is the average gain value. Let be the sensitivity gain value of the i-th mobile station.

[0049] Next, the target adjustment power for each mobile station can be determined using its sensitivity gain value and average gain value. Specifically, the target adjustment power can be calculated as follows: ; In the above formula, P i The power set for the i-th signal is the target adjustment power for the i-th mobile station; P0 is the preset total power.

[0050] Finally, the real-time communication power of each mobile station can be adjusted to the target adjustment power. That is, the target adjustment power is used as the transmission power for sending signals to the mobile station.

[0051] Reference Figure 2 The diagram illustrates an operation flowchart of a signal power adjustment method for a reference station according to an embodiment of the present invention.

[0052] Specifically, the operation procedure of the signal power adjustment method for the reference station may include the following steps: Step 1, Signal Transmission and Sensitivity Detection: The base station transmits each LoRa signal (carrying differential correction data) at an initial equal power. The mobile station receiver detects the actual reception sensitivity of each signal. (i is the path identifier, 1≤i≤G).

[0053] The second step is to calculate the single-channel sensitivity gain: based on the preset detection sensitivity threshold corresponding to the spreading factor of each channel. (e.g., SF=7 corresponds to) =-5dB, SF=12 corresponds to =-20dB), calculate the sensitivity gain δᵢ=Rᵢ−Kᵢ of the i-th signal (δᵢ is positive, indicating that the receiving sensitivity meets the requirements, and the larger the value, the higher the redundancy).

[0054] The third step is to calculate the average sensitivity gain: sum the sensitivity gains of all G-channel signals to obtain the average sensitivity gain δ = Σ( (i ranges from 1 to G).

[0055] Step 4: Dynamically calculate the target power of a single channel: according to the formula =( − δ) / (δ×G)× Calculate the target power of the i-th signal and implement differentiated power allocation.

[0056] Step 5: Iterative adjustment: If the target power calculation for all G signals has not been completed (i≤G), then i is incremented by 1 and the process returns to step four to continue calculating the target power for the next signal.

[0057] If all G-channel calculations are completed (i>G), then the transmit power of each signal is updated to the calculated target power.

[0058] Step 6, periodically repeat optimization: After waiting for a preset time (to cope with dynamic channel changes), return to step 1, re-detect sensitivity and start the next round of power adjustment to form a continuous adaptive loop.

[0059] This invention can improve the reliability of balanced communication by increasing power for users with high spreading factors (poor communication environment, low sensitivity threshold) and reducing power for users with low spreading factors (good link conditions, high sensitivity redundancy), ensuring that the receiving sensitivity of all users meets the target threshold requirement. This solves the imbalance problem of "high power consumption for high SF users and insufficient reliability for low SF users" in traditional solutions, and improves network fairness.

[0060] This invention can optimize the total power consumption of the system. Under the premise of ensuring that all users achieve the target reliability, it reduces the redundant power consumption of low-SF users and avoids excessive power consumption of high-SF users through intelligent power redistribution, significantly reducing the overall energy consumption of the system, extending the battery life of terminal devices, and adapting to the low power consumption requirements of the Internet of Things.

[0061] This invention can enhance dynamic adaptive capabilities. Through a cyclical mechanism of "periodic detection-calculation adjustment", it can respond in real time to changes in channel conditions (such as increased interference, changes in distance, etc.), dynamically optimize power allocation strategies, break through the limitations of traditional static power allocation, and improve communication stability in complex wireless environments.

[0062] This invention can improve network service quality and scalability. Balanced reliability and optimized power consumption enable the network to adapt to more user devices, support diverse application scenarios, provide efficient and reliable communication guarantees for large-scale IoT deployments (such as RTK precise positioning and remote data transmission), and improve network capacity and service stability.

[0063] By dynamically adjusting the transmit power of different users, this method effectively solves the problems of uneven communication reliability and high system power consumption caused by differences in spreading factors. This method creatively constructs a dual-objective optimization model based on reliability and energy efficiency. By appropriately reducing power for low-spreading-factor users with better link conditions, while intelligently increasing power for high-spreading-factor users with poorer communication environments, it achieves significant optimization of total system power consumption while ensuring that all users reach the target reliability level. This scheme breaks through the limitations of traditional static power allocation, not only improving network fairness and service quality, but also extending terminal battery life and enhancing network capacity and scalability through intelligent power reallocation, providing efficient and reliable communication guarantees for large-scale IoT deployments.

[0064] In this embodiment, the present invention provides a method for adjusting the signal power of a base station. Its advantages are as follows: the present invention can simultaneously transmit LoRa signals to several mobile stations according to a preset transmission power, so that each mobile station calculates a sensitivity gain value based on the LoRa signal; the corresponding target adjustment power is determined based on the sensitivity gain value fed back by each mobile station, and the communication power of each mobile station is adjusted to the target adjustment power. The present invention can determine and regulate the signal transmission power of mobile stations with different spreading factors. While ensuring that all users achieve the target communication reliability, it effectively balances the contradiction between excessive power consumption of high spreading factor users and insufficient reliability of low spreading factor users, achieving significant optimization of the total system power consumption, and simultaneously improving the network's adaptive capability and overall energy efficiency in complex channel environments.

[0065] Reference Figure 3 The diagram shows a flowchart of a signal power adjustment method for a reference station according to an embodiment of the present invention.

[0066] In one embodiment, the signal power adjustment method of the base station is applicable to a mobile station, which can communicate with the base station.

[0067] As an example, the signal power adjustment method for the reference station may include: S21. Receive the LoRa signal sent by the base station according to the preset transmission power.

[0068] In one embodiment, the mobile station can receive LoRa signals transmitted by the base station. For details regarding the parsing of step S11 in the above embodiment, please refer to the parsing description of the above embodiment; to avoid repetition, it will not be repeated here.

[0069] S22. Determine the sensitivity gain value based on the LoRa signal.

[0070] After receiving the LoRa signal, the mobile station can determine its own sensitivity gain value based on the LoRa signal.

[0071] In one embodiment, determining the sensitivity gain value based on the LoRa signal may include the following sub-steps: S221. Extract the sensitivity threshold corresponding to the spreading factor from the LoRa signal, and determine the actual sensitivity value for receiving the LoRa signal.

[0072] S222. Calculate the difference between the actual sensitivity value and the sensitivity threshold to obtain the sensitivity gain value.

[0073] Since each mobile station has a different spreading factor, each spreading factor corresponds to a fixed detection sensitivity threshold (the larger the SF, the lower the threshold, and the higher the required receiver sensitivity).

[0074] The sensitivity threshold corresponding to the spreading factor of the LoRa signal can be extracted to determine the actual sensitivity value of the received LoRa signal. The sensitivity threshold can be found in the table above.

[0075] Next, the difference between the actual sensitivity value and the sensitivity threshold can be calculated to obtain the sensitivity gain value. Specifically, the sensitivity gain value can be calculated as follows: ; In the above formula, Let R be the sensitivity gain value of the i-th mobile station, and R be the actual sensitivity of the i-th signal channel. i The sensitivity threshold of the i-th channel is K. i .

[0076] S23. Feedback the sensitivity gain value to the reference station so that the reference station can determine the corresponding target adjustment power based on the sensitivity gain value and adjust the preset transmission power to the target adjustment power.

[0077] After calculating the sensitivity gain value, the sensitivity gain value can be fed back to the base station, which then determines the corresponding target adjustment power based on the sensitivity gain value and adjusts the preset transmission power to the target adjustment power. The above steps correspond to step S13 in the above embodiment, and specific details can be found in the analysis of the above embodiment. To avoid repetition, further elaboration is not provided here.

[0078] In this embodiment, the present invention provides a method for adjusting the signal power of a base station. Its advantages are as follows: the present invention can receive a LoRa signal transmitted by the base station according to a preset transmission power; determine a sensitivity gain value based on the LoRa signal; and feed back the sensitivity gain value to the base station so that the base station can determine the corresponding target adjustment power based on the sensitivity gain value and adjust the preset transmission power to the target adjustment power. The present invention can determine and regulate the signal transmission power of mobile stations with different spreading factors. While ensuring that all users achieve the target communication reliability, it effectively balances the contradiction between excessive power consumption of high spreading factor users and insufficient reliability of low spreading factor users, achieving significant optimization of the total system power consumption, and simultaneously improving the network's adaptive capability and overall energy efficiency in complex channel environments.

[0079] This invention also provides a signal power adjustment device for a reference station, see [link to relevant documentation]. Figure 4 The diagram shows a schematic of the structure of a signal power adjustment device for a reference station according to an embodiment of the present invention.

[0080] The device is suitable for a base station connected to several mobile stations, wherein, as an example, the signal power adjustment device of the base station may include: The reference transmission module 201 is used to simultaneously transmit LoRa signals to a plurality of mobile stations according to a preset transmission power, so that each mobile station calculates a sensitivity gain value based on the LoRa signal, wherein the spreading factor of each mobile station is different from the others. The reference adjustment module 202 is used to determine the corresponding target adjustment power based on the sensitivity gain value fed back by each mobile station, and adjust the communication power of each mobile station to the target adjustment power.

[0081] Optionally, the step of simultaneously sending LoRa signals to a plurality of mobile stations according to a preset transmission power includes: Assign a corresponding spreading factor to each mobile station based on the communication distance of each mobile station; The preset transmission power is determined based on the number of spreading factors and the preset total power, and the LoRa signal corresponding to each mobile station is constructed using the sensitivity threshold corresponding to each spreading factor. Simultaneously, a corresponding LoRa signal is sent to each of the mobile stations according to the preset transmission power.

[0082] Optionally, the step of allocating a corresponding spreading factor to each mobile station based on the communication distance of each mobile station includes: Differential correction data is sent to each of the aforementioned mobile stations. The differential correction data is generated by packaging the original observation data and reference coordinates based on a preset standard format. The real-time location of each mobile station is obtained, and the communication distance of each mobile station is determined based on the real-time location. A corresponding spreading factor is assigned to each mobile station based on the magnitude of the communication distance.

[0083] Optionally, determining the corresponding target adjustment power based on the sensitivity gain value fed back by each of the mobile stations, and adjusting the communication power of the corresponding mobile station using the target adjustment power, includes: An average gain value is determined using several of the aforementioned sensitivity gain values, and a target adjustment power corresponding to each of the mobile stations is determined using the sensitivity gain value of each mobile station and the average gain value. The real-time communication power of each of the mobile stations is adjusted to the target adjustment power.

[0084] This invention also provides a signal power adjustment device for a reference station, see [link to relevant documentation]. Figure 5 The diagram shows a schematic of the structure of a signal power adjustment device for a reference station according to an embodiment of the present invention.

[0085] The device is suitable for mobile stations connected to a base station, wherein, as an example, the signal power adjustment device of the base station may include: The mobile receiving module 301 is used to receive the LoRa signal sent by the base station according to the preset transmission power; The motion determination module 302 is used to determine the sensitivity gain value based on the LoRa signal; The mobile feedback module 303 is used to feed back the sensitivity gain value to the reference station, so that the reference station can determine the corresponding target adjustment power based on the sensitivity gain value and adjust the preset transmission power to the target adjustment power.

[0086] Optionally, determining the sensitivity gain value based on the LoRa signal includes: Extract the sensitivity threshold corresponding to the spreading factor from the LoRa signal and determine the actual sensitivity value for receiving the LoRa signal; The difference between the actual sensitivity value and the sensitivity threshold is calculated to obtain the sensitivity gain value.

[0087] This invention also provides a signal power adjustment system for a reference station, see [link to relevant documentation]. Figure 6 The diagram shows a schematic of the structure of a signal power adjustment system for a reference station according to an embodiment of the present invention.

[0088] As an example, the signal power adjustment system of the reference station may include: a reference station and several mobile stations, wherein the reference station communicates with the several mobile stations respectively; The reference station performs the signal power adjustment method for the reference station as described in the above embodiments; The mobile station performs the signal power adjustment method of the base station as described in the above embodiments.

[0089] Reference Figure 7 This illustration shows a schematic diagram of a base station and a mobile station provided according to an embodiment of the present invention. In one embodiment, the base station includes a base station GNSS receiver and a base station LoRa radio connected to each other. The mobile station includes a mobile GNSS receiver and a mobile LoRa radio that are interconnected; The base station LoRa radio and the mobile LoRa radio communicate wirelessly.

[0090] Those skilled in the art will understand that, for ease of description and brevity, the specific working process of the device described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0091] Furthermore, this application also provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the signal power adjustment method for the reference station as described in the above embodiments.

[0092] Furthermore, embodiments of this application also provide a computer-readable storage medium storing a computer-executable program for causing a computer to execute the signal power adjustment method for a reference station as described in the above embodiments.

[0093] In the description of the embodiments of the present invention, it should be noted that the terms "above," "below," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. When an element such as a layer, region, or substrate is referred to as being "above" or "on top of" another element, it may be directly on the other element, or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" or "above" another element, there is no intermediate element. It should also be understood that when an element is referred to as being "below" or "under" another element, it may be directly below or under the other element, or there may be an intermediate element. Conversely, when an element is referred to as being "directly below" or "under" another element, there is no intermediate element. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0094] Those skilled in the art will understand that embodiments of this application may also include computer program products. Therefore, this application may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0095] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), devices, and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0096] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0097] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0098] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for adjusting the signal power of a reference station, characterized in that, The method is applicable to a base station connected to several rover stations, and the method includes: LoRa signals are simultaneously transmitted to several mobile stations according to a preset transmission power, so that each mobile station calculates a sensitivity gain value based on the LoRa signal, wherein the spreading factor of each mobile station is different. The target adjustment power is determined based on the sensitivity gain value fed back by each mobile station, and the communication power of each mobile station is adjusted to the target adjustment power.

2. The signal power adjustment method for a reference station according to claim 1, characterized in that, The step of simultaneously sending LoRa signals to several mobile stations according to a preset transmission power includes: Assign a corresponding spreading factor to each mobile station based on the communication distance of each mobile station; The preset transmission power is determined based on the number of spreading factors and the preset total power, and the LoRa signal corresponding to each mobile station is constructed using the sensitivity threshold corresponding to each spreading factor. Simultaneously, a corresponding LoRa signal is sent to each of the mobile stations according to the preset transmission power.

3. The signal power adjustment method for a reference station according to claim 2, characterized in that, The step of allocating a corresponding spreading factor to each mobile station based on the communication distance of each mobile station includes: Differential correction data is sent to each of the aforementioned mobile stations. The differential correction data is generated by packaging the original observation data and reference coordinates based on a preset standard format. The real-time location of each mobile station is obtained, and the communication distance of each mobile station is determined based on the real-time location. Each mobile station is assigned a corresponding spreading factor based on the communication distance.

4. The signal power adjustment method for a reference station according to claim 1, characterized in that, The step of determining the corresponding target adjustment power based on the sensitivity gain value fed back by each of the mobile stations, and adjusting the communication power of the corresponding mobile station using the target adjustment power, includes: An average gain value is determined using several of the aforementioned sensitivity gain values, and a target adjustment power corresponding to each of the mobile stations is determined using the sensitivity gain value of each mobile station and the average gain value. The real-time communication power of each mobile station is adjusted to the target adjustment power.

5. A method for adjusting the signal power of a reference station, characterized in that, The method is applicable to mobile stations connected to a base station, and the method includes: Receive the LoRa signal sent by the base station according to the preset transmission power; The sensitivity gain value is determined based on the LoRa signal; The sensitivity gain value is fed back to the reference station so that the reference station can determine the corresponding target adjustment power based on the sensitivity gain value and adjust the preset transmission power to the target adjustment power.

6. The signal power adjustment method for a reference station according to claim 5, characterized in that, Determining the sensitivity gain value based on the LoRa signal includes: Extract the sensitivity threshold corresponding to the spreading factor from the LoRa signal, and determine the actual sensitivity value for receiving the LoRa signal; The difference between the actual sensitivity value and the sensitivity threshold is calculated to obtain the sensitivity gain value.

7. A signal power adjustment system for a reference station, characterized in that, The system includes: a base station and several mobile stations, wherein the base station communicates with the several mobile stations respectively; The reference station performs the signal power adjustment method for the reference station as described in any one of claims 1-4; The mobile station performs the signal power adjustment method for the base station as described in any one of claims 5-6.

8. The signal power adjustment system for the reference station according to claim 7, characterized in that, The base station includes interconnected base station GNSS receivers and base station LoRa radios; The mobile station includes a mobile GNSS receiver and a mobile LoRa radio that are interconnected; The base station LoRa radio and the mobile LoRa radio communicate wirelessly.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, when the processor executes the program, it implements the signal power adjustment method for a reference station as described in any one of claims 1-4 or the signal power adjustment method for a reference station as described in any one of claims 5-6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the signal power adjustment method for a reference station as described in any one of claims 1-4 or as described in any one of claims 5-6.

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