Base station energy saving method and system and storage medium

Abstract

The invention provides a base station energy saving method and system and a storage medium, and belongs to the technical field of communication, the base station energy saving method and system are applied to a base station energy saving system comprising at least one base station, each base station is provided with at least one active antenna unit, and the base station energy saving method comprises the following steps: obtaining position information of an aircraft entering a monitoring area, the base station information in the monitoring area is acquired; comparing the position information with a cell coverage area corresponding to the base station; if the current positions and the predicted flight paths of all the aircrafts are out of the cell coverage range corresponding to the base station, the base station is controlled to enter an energy-saving state, corresponding energy-saving operation is executed, and the energy-saving operation comprises the steps of adjusting the power of the base station and closing part of functional modules. According to the method, the communication and / or sensing requirements of the low-altitude aircraft are met, meanwhile, the energy consumption overhead of the base station is reduced to the maximum extent, and the operation efficiency and economical efficiency of the base station energy-saving system in a low-altitude coverage scene can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a base station energy saving method, system and storage medium. Background Art

[0002] In the low-altitude coverage scenario, low-altitude airspace is defined as airspace within a vertical distance of 1,000 meters from the ground. There are many types of aircraft in this airspace, such as industrial drones, cargo drones, etc. The low-altitude economy relies on low-altitude airspace and these aircraft to drive the integration and development of related fields. In order to meet the communication and supervision needs of low-altitude drones, a low-altitude coverage network will be deployed. According to low-altitude supervision regulations, legal drones must broadcast their own IDs.

[0003] For the energy-saving solution of traditional ground-covered base stations, the base station cannot be completely shut down because there are potential users on the ground who access the network from the "idle state". The current energy-saving technologies include symbol shutdown (not sending data on some symbols to reduce the sending time), deep sleep (the sleep time is configured by the customer, but in the actual network, the application scenarios are limited due to situations such as overtime workers in office buildings), carrier shutdown (turning off some carriers in multi-carrier scenarios), etc. These technologies all determine whether to enter the energy-saving state based on whether there are users accessing. In order to ensure that users can access the network, the base station must maintain basic coverage, which leads to unsatisfactory energy-saving effects of the base station. In low-altitude scenarios, the poor energy-saving effect of the base station is more obvious. Summary of the invention

[0004] The present application provides a base station energy-saving method, system and storage medium, aiming to solve the problem of how to maximize the reduction of base station energy consumption overhead based on the characteristics of low-altitude coverage.

[0005] In a first aspect, the present application provides a base station energy saving method, which is applied to a base station energy saving system including at least one base station, each base station having at least one active antenna unit. The method comprises: Obtain the location information of the aircraft entering the monitoring area, as well as the base station information within the monitoring area; Comparing the location information with the cell coverage area corresponding to the base station; If the current positions and predicted flight trajectories of all aircraft are outside the coverage of the cell corresponding to the base station, the base station is controlled to enter an energy-saving state and perform corresponding energy-saving operations, including adjusting the base station power and shutting down some functional modules.

[0006] In a second aspect, the present application further provides a base station energy-saving system, the base station energy-saving system comprising: An acquisition module is used to acquire the location information of the aircraft entering the monitoring area and the base station information in the monitoring area; a comparison module is used to compare the location information with the cell coverage area corresponding to the base station; The control module is used to control the base station to enter an energy-saving state and perform corresponding energy-saving operations when the current positions and predicted flight trajectories of all aircraft are outside the coverage of the cell corresponding to the base station, wherein the energy-saving operations include adjusting the base station power and shutting down some functional modules.

[0007] In a third aspect, the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the base station energy saving method as described in the first aspect.

[0008] The base station energy-saving method, system and storage medium provided in the present application are intended to solve the problem of maximizing the reduction of base station energy consumption overhead in the scenario of low-altitude coverage. The method first obtains the position information of the aircraft entering the monitoring area. Then, when comparing the position information with the cell coverage range corresponding to the base station, the relatively small characteristics of the low-altitude coverage area are considered, and the division of the cell coverage range is refined to make the comparison more accurate. When the current position and predicted flight trajectory of all aircraft are outside the cell coverage range corresponding to the base station, the base station is controlled to enter the energy-saving state and execute the operations of adjusting the base station power and shutting down some functional modules.

[0009] Therefore, by obtaining the location information of the aircraft, this application can more accurately determine whether the base station needs to provide services for the aircraft, avoiding unnecessary energy waste. In addition, refining the cell coverage range helps to improve the accuracy of judgment and reduce misjudgment, thereby more effectively controlling the base station to enter the energy-saving state. Moreover, while meeting the communication and / or perception needs of low-altitude aircraft, the energy consumption overhead of the base station is minimized, which helps to improve the operating efficiency and economy of the base station energy-saving system in low-altitude coverage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 is a flow chart of the base station energy saving method provided by the present application; Figure 2 is a structural diagram of a base station energy-saving system provided in an embodiment of the present application; Figure 3is a schematic diagram of a grid and an active antenna unit provided in an embodiment of the present application; Figure 4 It is a structural block diagram of the base station energy-saving system provided in this application. DETAILED DESCRIPTION

[0012] In the embodiments of the present application, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0013] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0014] In terms of base station energy saving, the base station energy saving method provided by this application aims to solve the problem of maximizing the reduction of base station energy consumption overhead, and shows many advantages compared with the downlink power control scheme of traditional ground coverage. The base station energy saving method described in this application first obtains the position information of the aircraft entering the monitoring area, and then compares it with the cell coverage range corresponding to the base station. When the aircraft are all outside the coverage range, the base station enters the energy-saving state and performs the operation of adjusting the power and shutting down some functional modules. This method is different from the traditional scheme. In the downlink power control scheme of traditional ground coverage, since there are users on the ground who can access the network from the "idle state" at any time, even if there are no users in the cell, basic coverage must be guaranteed, and the base station cannot be completely shut down to achieve optimal energy saving. The symbol shutdown in the traditional scheme is just that some symbols do not send data to reduce the sending time, and the energy saving effect is limited; although the deep sleep time can be configured by the customer, if someone works overtime when using the office building in the early morning, there will be no coverage, and the actual network is basically unusable; carrier shutdown is also only an operation in a multi-carrier scenario. The base station energy saving method described in this application is based on the judgment of the position of the aircraft, and more accurately determines whether the base station is serving, avoiding the energy waste of the traditional scheme to maintain basic coverage for possible user access. Its energy-saving operation of adjusting power and shutting down some functional modules is more flexible and effective. It is not as limited as traditional solutions and can better adapt to the characteristics of aircraft, such as flight path, activity range, etc., while meeting the communication needs of low-altitude aircraft and maximizing the reduction of energy consumption.

[0015] Please refer to Figure 1 , Figure 2 , Figure 1is a flow chart of the base station energy saving method provided by the present application, Figure 2 : is a structural diagram of a base station energy-saving system provided in an embodiment of the present application. A base station energy-saving method is applied to a base station energy-saving system including at least one base station (such as base station 1, base station 2, ..., base station n), each base station having at least one active antenna unit (Active Antenna Unit, AAU), such as active antenna unit 1, active antenna unit 2, ..., active antenna unit m, and the base station energy-saving method includes: S110, obtaining the location information of the aircraft entering the monitoring area and the base station information within the monitoring area.

[0016] Specifically, before the base station energy-saving system obtains the location information of the aircraft entering the monitoring area and the base station information in the monitoring area, the base station needs to report its base station information to the base station energy-saving system (such as to the energy-saving controller of the base station energy-saving system), and the base station information includes the location information, engineering parameter information, transmission power, base station capability information and energy-saving state transition time information of the active antenna unit reported by the base station. The base station information is used to calculate and / or simulate the coverage area of ​​each base station. Among them, the location information of the active antenna unit includes longitude, latitude, and altitude; the engineering parameter information includes inclination, azimuth, and attitude; the base station capability information includes carrier bandwidth, user number specifications, and the number of accessible users; the energy-saving state transition time information includes the effective duration of the energy-saving instruction on and off.

[0017] The location information of the aircraft in the monitoring area is obtained through a pre-deployed aircraft information management system, and the location information includes identity information, location coordinates, heading, flight speed and flight route; the identity information is used to uniquely identify each aircraft, the location coordinates are used to indicate the location of the aircraft in the monitoring area, and the location coordinates, heading, flight speed and flight route are used to predict the flight trajectory.

[0018] The aircraft information management system can use the Remote-ID system or the ADS-B system. The Remote-ID system is used to identify and track aircraft such as drones. It can provide information about the aircraft's identity, location, and other information, which helps to manage and monitor the aircraft. The ADS-B system was originally used mainly in the aviation field, especially civil aircraft. The aircraft broadcasts its own location (such as longitude, latitude), altitude, speed, and other information through the ADS-B system.

[0019] S120, comparing the location information with the cell coverage area corresponding to the base station.

[0020] For example, please refer to Figure 3 , Figure 3This is a schematic diagram of the grid and active antenna unit provided in the embodiment of the present application. Based on the signal strength distribution of the AAU (active antenna unit) beam, the space around each base station is divided into multiple grids of uniform or uneven size, and each grid is marked as belonging to the corresponding active antenna unit to establish the relationship between the grid and the active antenna unit.

[0021] During the comparison process, the location information is first matched with the pre-divided grid; if the location information of the aircraft is within a certain grid, the relationship between the aircraft and the grid is determined, and then the corresponding active antenna unit is determined, wherein the grid area covered by the active antenna unit is regarded as a part of the cell coverage range corresponding to the base station to which it belongs, thereby determining that the location information of the aircraft is within the cell coverage range corresponding to the base station.

[0022] That is to say, in order to compare the aircraft location information with the cell coverage corresponding to the base station, this application adopts a method of determining the base station coverage based on grid division. The space around the base station is divided into multiple grids based on the signal strength distribution of the active antenna unit beam, and the grid size can be uniform or uneven. In areas where the signal strength changes complexly, dividing into smaller grids can more accurately determine the coverage range; in areas where the signal is relatively stable, larger grids can be divided. The attributes of the grid, for example, include information such as base station ID, AAU ID, and parameters such as signal quality.

[0023] As an important part of the base station, the active antenna unit is responsible for sending and receiving signals. By marking each grid as belonging to a specific active antenna unit, a connection between the two is established. When the aircraft position information is in a certain grid, the relationship between the aircraft and the grid can be determined. In view of the relationship between the grid and the active antenna unit, the corresponding active antenna unit can be determined. For example, if the aircraft is located in grid A belonging to active antenna unit 1, the relationship between the aircraft and active antenna unit 1 can be determined.

[0024] Since the grid area covered by the active antenna unit is considered as part of the cell coverage corresponding to the base station, after determining the relationship between the aircraft and the active antenna unit, it is possible to determine whether the aircraft's location information is within the cell coverage corresponding to the base station. For example, if active antenna unit 1 belongs to base station B, when the aircraft is associated with active antenna unit 1, it can be determined that the aircraft's location is within the cell coverage corresponding to base station B.

[0025] Generally speaking, the network needs to ensure the continuity of coverage, so there will be multiple active antenna units covering the same grid. In this case, it is necessary to make a judgment based on a service signal quality threshold, and the active antenna units on the grid that are greater than the threshold are marked as specific active antenna units with potential affiliation to the grid.

[0026] Specifically, the steps of constructing the relationship between the grid and the active antenna unit include: First, taking the grid point as the target, the signal strength from all active antenna units within a preset distance range from the grid point to the grid point is calculated, including the propagation model based on the cell frequency band, the position of the active antenna unit, the transmission power of the active antenna unit, the antenna direction of the active antenna unit, the antenna pattern of the active antenna unit, the grid position and the propagation environment matching the active antenna unit and the grid, to calculate the signal strength from each active antenna unit to the grid point; secondly, for each grid point, the active antenna units with signal strength greater than the target threshold are screened out, and the identification of the screened active antenna units and their corresponding signal strengths are recorded.

[0027] Exemplarily, the step of establishing the relationship between the grid and the active antenna unit further includes: Select the active antenna unit corresponding to the grid; For the same grid point, the selection methods include any of the following: The first method is to first sort all active antenna units related to the grid point according to signal strength, and then select a preset number of active antenna units at the front as the active antenna units corresponding to the grid point.

[0028] The first method can ensure that each grid point preferentially establishes an affiliation with an active antenna unit with a stronger signal strength, thereby ensuring that the grid point can receive a stronger signal, optimizing the allocation of signal resources, and improving the quality of signal coverage.

[0029] The second method: first determine the maximum signal strength in the active antenna unit corresponding to the grid point, and select the active antenna unit whose signal strength is not less than the maximum signal strength minus the preset first signal strength value as the active antenna unit corresponding to the grid point.

[0030] The second method ensures that the signal strength of the active antenna units associated with the grid points is within an acceptable range, ensuring that the signals received by the grid points have a certain strength, which helps to maintain the stability and quality of communications.

[0031] The third method: first determine the maximum signal strength in the active antenna unit corresponding to the grid point, and then calculate the difference between each active antenna unit and the maximum signal strength, and only retain the active antenna units whose difference is not less than the preset second signal strength value as the active antenna units corresponding to the grid point.

[0032] The third method can screen out active antenna units that are within a certain range of the strongest signal active antenna unit, which helps to increase the selection range of active antenna units that can be used to provide signals for grid points while ensuring signal quality, thereby improving the flexibility and adaptability of the system.

[0033] Therefore, when constructing the relationship between the grid and the active antenna unit, the above selection method can select the top N active antenna units with the strongest signal strength for the same grid point, or the active antenna unit with a signal strength greater than or equal to (the strongest signal strength of the grid point minus the preset first signal strength value x1 dB), or only retain the active antenna units with (the strongest active antenna unit signal strength - the active antenna unit signal strength) greater than or equal to the preset second signal strength value x2 dB.

[0034] For example, for the first method, if there are 10 active antenna units associated with a grid point, Top N=3, then the top three active antenna units in terms of signal strength are selected as the active antenna units corresponding to the grid point.

[0035] For example, for the second method, the strongest signal strength among the active antenna units corresponding to a grid point is 30 dB, x1=5 dB, then the active antenna unit with a signal strength greater than or equal to 25 dB is selected as the active antenna unit corresponding to the grid point.

[0036] For example, for the third method, the strongest signal strength in the active antenna unit corresponding to a grid point is 28 dB, x2=3 dB. If the signal strength of a certain active antenna unit is 24 dB, because (28-24)=4 dB≥3 dB, this active antenna unit can be determined as the active antenna unit corresponding to the grid point.

[0037] Exemplarily, if the signal quality of active antenna unit 1 on grid A is greater than the service signal quality threshold, and the signal quality of active antenna unit 2 is also greater than the service signal quality threshold, then grid A belongs to active antenna units 1 and 2 at the same time.

[0038] Taking into account the simulation calculation error, the embodiment of the present application supports the base station to correct the grid belonging to the active antenna unit based on the signal quality reported or sensed during the flight of the aircraft, and adjust the grid belonging to the active antenna unit information based on the actual reported or sensed signal quality of the active antenna unit. In other words, the relationship between the grid and the active antenna unit is not fixed, but can be dynamically corrected according to the results obtained from actual measurements.

[0039] Exemplarily, when constructing the relationship between the grid and the active antenna unit, the relationship mark between the grid and the active antenna unit is corrected based on the actual measurement results; when the aircraft is in the grid area and reports the true measurement value, or the base station measures the true value of the grid, the system refreshes the active antenna unit of the grid and its signal strength, and readjusts the active antenna unit belonging to the grid.

[0040] For example, a monitoring area is divided into 9 grids, labeled G1-G9, and has 3 active antenna units AAU1, AAU2, and AAU3. The initial belonging relationship is that grids G1, G2, and G3 belong to AAU1; grids G4, G5, and G6 belong to AAU2; and grids G7, G8, and G9 belong to AAU3. And the signal strength received by each grid from the active antenna unit to which it belongs is estimated. For example, the signal strength received by G1 from AAU1 is -60dBm.

[0041] Aircraft trigger correction: When an aircraft enters the grid G5 area and reports the real measurement value, it is found that the signal strength received by G5 from AAU3 is much higher than the signal strength received from AAU2 (assuming that the aircraft measures the signal strength from AAU3 to G5 as -55dBm, while the signal strength from AAU2 to G5 is -65dBm). After receiving this measurement value, the system will refresh the active antenna unit of G5 and its signal strength, readjust G5 to AAU3, and update the signal strength received by G5 from AAU3 to -55dBm.

[0042] Base station triggers correction: Assume that the base station measures the true value of grid G3 and finds that the signal strength received by G3 from AAU2 is stronger than the signal strength received from AAU1 (for example, the base station measures the signal strength from AAU2 to G3 as -58dBm, while the signal strength from AAU1 to G3 is -62dBm). Then the system refreshes the active antenna unit of G3 and its signal strength, readjusts G3 to belong to AAU2, and updates the signal strength received by G3 from AAU2 to -58dBm.

[0043] Exemplarily, after the relationship between the grid and the active antenna unit is constructed based on calculation, all base stations in the area are turned on, and a drone is used to fly on a potential route. The propagation model is corrected according to the signal strength reported by the drone to the base station or perceived by the base station, and the signal quality of all grids in the area is recalculated based on the new propagation model, and the grids with actual measurement results are given priority to use the measurement results. At this time, a more accurate relationship between the grid and the active antenna unit can be obtained. Exemplarily, if a certain active antenna unit is responsible for multiple grid areas, when the aircraft is in any of the multiple grid areas, it is determined that the aircraft is located within the coverage range of the base station cell corresponding to the active antenna unit.

[0044] Specifically, by setting the corresponding relationship between the active antenna unit and the grid area, that is, one active antenna unit is responsible for multiple grid areas. This means that the signal coverage range of this active antenna unit is composed of the grid areas it is responsible for. For example, active antenna unit A is responsible for the three grid areas of grid area 1, grid area 2 and grid area 3. When the aircraft is in any of these multiple grid areas, it is determined that the aircraft is located within the coverage range of the base station cell corresponding to the active antenna unit. For example, if the aircraft is in grid area 1 (because grid area 1 is one of the multiple grid areas that active antenna unit A is responsible for), then it can be determined that the aircraft is located within the coverage range of the base station cell corresponding to active antenna unit A. This is because all the grid areas that active antenna unit A is responsible for together constitute a part of it within the coverage range of the base station cell. As long as the aircraft is in one of the grid areas, it means that it is within the coverage range of the base station cell corresponding to this active antenna unit.

[0045] Exemplarily, in combination with the prediction result of the flight trajectory of the aircraft, if the predicted trajectory is within multiple grid areas or is associated with related grid areas, it is determined that the aircraft is within the coverage of the cell corresponding to the base station.

[0046] Specifically, for example, combined with the predicted results of the flight trajectory of the aircraft during the energy-saving state transition time. After the flight trajectory of the aircraft is predicted, if the predicted trajectory is within multiple grid areas, it means that the aircraft may pass through these grid areas in the future. For example, the predicted trajectory shows that the aircraft will pass through grid area A, grid area B, and grid area C in sequence. Or the predicted trajectory is associated with the relevant grid areas. For example, although the trajectory is not completely within a certain grid area, it has some connection with the boundary or signal range of the grid area. For example, the trajectory is adjacent to the boundary of grid area D, or the trajectory will be affected by the signal of grid area D within a certain range.

[0047] As long as any of the above two conditions is met, it is determined that the aircraft is located within the coverage of the cell corresponding to the base station. This is because the relationship between the grid area and the base station cell coverage has been established before, and each grid area is a part of the base station cell coverage. Therefore, when the predicted trajectory of the aircraft has the above relationship with these grid areas, it can be considered that the aircraft is located within the coverage of the cell corresponding to the base station.

[0048] Exemplarily, if there is only one active antenna unit for sending signals to the aircraft, the active antenna unit is directly selected; if the aircraft is within the coverage range of multiple active antenna units, the active antenna unit that has the most continuous coverage of the current position of the aircraft and its predicted trajectory, and whose coverage range at least includes all predicted trajectories within the energy-saving state transition time, is selected as the target active antenna unit, and other active antenna units that are related to the aircraft but have partial coverage or are discontinuous with the current position are turned off; the target active antenna unit is used to provide communication and / or perception services for the aircraft, and the predicted trajectory is a flight trajectory predicted based on the aircraft's speed information, energy-saving state transition time and direction information.

[0049] Specifically, when there is only one active antenna unit used to send signals to an aircraft, for example, in a certain area or at a certain time, only active antenna unit A can send signals to the aircraft, and no other active antenna unit participates in the signal transmission work to the aircraft. In this case, the only active antenna unit is directly selected.

[0050] When the aircraft is within the coverage of multiple active antenna units, it means that multiple active antenna units can provide signal coverage for the aircraft. For example, active antenna units A, B, and C can all cover the location of the aircraft. At this time, it is necessary to select the best active antenna unit. The selection criterion is the active antenna unit that covers the most aircraft location and its future predicted trajectory.

[0051] Assume that the aircraft is currently located at a certain position, and the future flight trajectory is predicted based on its speed information and direction information. If active antenna unit A covers the current position of the aircraft and most of the predicted trajectory that is continuous with the current position, while active antenna units B and C cover less or are discontinuous with the current position, then active antenna unit A will be selected as the target active antenna unit. Once the target active antenna unit (such as active antenna unit A) is determined, other active antenna units related to the aircraft but partially covered (i.e., active antenna units B and C) will be turned off. The purpose of doing this is to save energy or optimize resource allocation, etc. The selected target active antenna unit (active antenna unit A) will be used to provide communication services for the aircraft to ensure that the aircraft can maintain normal communication connection during flight.

[0052] The predicted trajectory can be a flight trajectory predicted based on the speed information and direction information of the aircraft and the energy-saving state transition time. By obtaining information such as the aircraft's speed (e.g., kilometers per hour) and direction (e.g., 30 degrees north-east) and energy-saving state transition time (e.g., 1 second), the path that the aircraft may take in the future can be roughly calculated, so that the active antenna unit can be selected based on the coverage of each active antenna unit on the predicted path.

[0053] Specifically, when selecting the active antenna unit that covers the most of the aircraft position and its predicted future trajectory as the target active antenna unit, it is necessary to calculate the coverage range of the active antenna unit. Covering the most of the current position of the aircraft and its predicted trajectory means that the coverage range first needs to include the current position of the aircraft, and secondly includes the points adjacent to the current position in the predicted aircraft position (such as at least including all predicted trajectories within the energy-saving state transition time), and the active antenna unit with the most uninterrupted adjacent points is the target active antenna unit. When there are multiple target active antennas, select the active antenna unit with the strongest average signal level. If there are still multiple target active antenna units, select the active antenna unit with the smallest signal level variance.

[0054] S130, if the positions of all aircraft are outside the coverage of the cell corresponding to the base station, the base station is controlled to enter an energy-saving state and perform corresponding energy-saving operations, which include adjusting the base station power and shutting down some functional modules.

[0055] Specifically, when it is determined that the positions of all aircraft are outside the coverage of the cell corresponding to the base station, this means that the base station currently has no aircraft that needs to be served. For example, suppose there is a base station responsible for the communication and other services of aircraft in a specific area (cell coverage). If there were aircraft A, B, C, etc. in this area, after position detection, it was found that aircraft A was in the coverage of another base station, and aircraft B and C were also far away from the coverage of this base station, that is, all aircraft were not within the coverage of the cell corresponding to this base station.

[0056] In this case, the base station will be controlled to enter an energy-saving state. This is a resource optimization strategy, because it is a waste of resources for the base station to continue to operate at full power or turn on all functional modules when there is no aircraft to serve. And the base station will perform corresponding energy-saving operations. These energy-saving operations include adjusting the base station power, such as reducing the transmission power. Because there is no aircraft that needs to receive a strong signal, the power can be appropriately reduced to reduce energy consumption. At the same time, some functional modules are turned off. For example, if the base station has some functional modules dedicated to processing high-speed data transmission or special communication protocols for aircraft, these functional modules can be turned off when there is no aircraft, thereby further reducing energy consumption and achieving the purpose of energy saving.

[0057] In some embodiments, the base station energy saving method further includes: Receive the identity information sent by the aircraft when it enters the monitoring area, and compare it with the pre-stored identity information of the target aircraft; if the identity information of the aircraft is not in the identity information of the target aircraft, control the base station to perform corresponding energy-saving operations.

[0058] Specifically, the pre-stored target aircraft identification information is the identification of those aircraft that have been registered and authorized to fly in the area. If the identification information of the aircraft is not in the target aircraft identification information, it means that the aircraft is unauthorized or does not need to provide services. In this case, the base station will be controlled to perform corresponding energy-saving operations. This is because the aircraft is not a target aircraft and the base station does not need to provide services for it, so energy and resources are saved by performing energy-saving operations (such as adjusting power, shutting down some functional modules, etc.).

[0059] The base station energy saving method described in this application is described below through some application scenarios.

[0060] Example 1: like Figure 2 As shown in the figure, the base station energy-saving system consists of three parts: the first part is the synaesthesia system (such as the synaesthesia system / perception-only system). The active antenna unit of the base station can be deployed together with the active antenna unit of the synaesthesia system, or they can be deployed independently. The second part is the aircraft information management system (such as the ADS-B / Remote-ID system). The third part is the control module, which can be deployed independently, or deployed together with the base station, or deployed together with the synaesthesia system.

[0061] For the base station, when there is a user in the cell (which can be a communication user or a perception user of a drone), the base station is in working state. When there is no user in the cell, and this user-free state lasts for longer than a delay threshold preset by the user, the base station will enter the energy-saving state. After the interaception / communication system is started, it will report some information to the control module, including whether each active antenna unit of the base station is in energy-saving state or working state, the engineering parameters of each active antenna unit of the base station (such as longitude and latitude, altitude, orientation, inclination, antenna radiation pattern, etc.) and the power of each active antenna unit of the base station.

[0062] The ADS-B / Remote-ID system is mainly responsible for obtaining the drone's ID and coordinate information, and then reporting the acquired information to the control module.

[0063] The control module also plays an important role in the entire system. The system pre-sets some parameter thresholds, such as coverage margin (coverage margin refers to a redundancy reserved by the system to combat signal fading or fluctuations to ensure business stability). The control module calculates the coverage of each active antenna unit (margin is taken into account when calculating), and based on the drone location information obtained by the ADS-B / Remote-ID system, determines which active antenna units the drone falls into the coverage range. If the active antenna unit where the drone is located is in energy-saving state, the control module will issue a "work" command.

[0064] Example 2: like Figure 2 As shown in the figure, the base station energy-saving system consists of three parts: the first part is the synaesthesia system (such as the synaesthesia system / perception-only system). The active antenna unit of the base station can be deployed together with the active antenna unit of the synaesthesia system, or they can be deployed independently. The second part is the aircraft information management system (such as the ADS-B / Remote-ID system). The third part is the control module, which can be deployed independently, or deployed together with the base station, or deployed together with the synaesthesia system.

[0065] In terms of base stations, there are the following working modes. When there are users in the cell (which can be communication users or perception users of drones), the base station is in working state. If there are no users in the cell, and the duration of this user-free state exceeds a delay threshold preset by the user, the base station will enter an energy-saving state. After the telepathy / communication system is started, some important information will be reported to the control module, including whether the active antenna unit of each base station is in an energy-saving state or a working state, the engineering parameters of each active antenna unit (such as longitude and latitude, altitude, orientation, inclination, antenna radiation pattern, etc.) and the power of each active antenna unit.

[0066] The ADS-B / Remote-ID system has an important task. It first obtains the drone's ID, coordinate information, and speed information, and then reports the acquired information to the control module.

[0067] The control module plays a key role in the operation of the entire system. The system pre-sets some parameter thresholds, including but not limited to coverage margin. The control module calculates the coverage of each active antenna unit (the coverage margin is taken into account when calculating), and then determines which active antenna units the drone falls into the coverage range based on the drone position information obtained by the ADS-B / Remote-ID system.

[0068] In addition, the control module will also estimate the flight trajectory of the location information based on multiple data of the same drone, so as to obtain the location of the drone at a future moment. When a drone is within the coverage of multiple active antenna units, the control module will further judge based on the estimated position and select the active antenna unit that covers the most of the drone's current position and future estimated position. If the active antenna unit where the drone is located is in an energy-saving state, the control module will issue a "work" command, that is, when a drone enters the relevant area, the relevant active antenna unit will work, and if no drone enters, it will remain in an energy-saving state. Compared with Example 1, when there are multiple active antenna units that can detect the drone, the logic of selecting a specific active antenna unit is added.

[0069] Example 3: like Figure 2 As shown in the figure, the base station energy-saving system consists of three parts: the first part is the synaesthesia system (such as the synaesthesia system / perception-only system). The active antenna unit of the base station can be deployed together with the active antenna unit of the synaesthesia system, or they can be deployed independently. The second part is the aircraft information management system (such as the ADS-B / Remote-ID system). The third part is the control module, which can be deployed independently, or deployed together with the base station, or deployed together with the synaesthesia system.

[0070] For the base station, when there are users in the cell (which can be communication users or perception users of drones), the base station is in working state. Once there are no users in the cell, and the duration of this user-free state exceeds a delay threshold preset by the user, the base station will enter the energy-saving state. After the telepathy / communication system is started, it will report a series of information to the control module, including whether each active antenna unit of the base station is in energy-saving state or working state, the engineering parameters of each active antenna unit (such as longitude and latitude, altitude, orientation, inclination, antenna radiation pattern, etc.) and the power of each active antenna unit.

[0071] The ADS-B / Remote-ID system is responsible for a specific task in this system. It obtains the drone ID and drone coordinate information, and then reports the acquired information to the control module.

[0072] The enterprise network administrator will send the drone whitelist (a list of predetermined drone identification information that is allowed to enter a specific area) to the control module. The control module plays a key control role in the entire process. The system pre-sets some parameter thresholds, such as coverage margin, etc. The control module calculates the coverage range of each active antenna unit (taking coverage margin into account when calculating), and then based on the drone location information obtained by the ADS-B / Remote-ID system, the target drone is screened out according to the whitelist, so as to determine which active antenna units these target drones fall into. For example, if the drone's identity information is in the whitelist, the control base station performs the corresponding energy-saving operation, otherwise the location judgment of the drone is ignored, and there is no subsequent processing flow. If the active antenna unit where the drone is located is in an energy-saving state, the control module will issue a "work" instruction. Compared with Example 1, this example 3 adds a whitelist of drone IDs provided by enterprise users, and only processes drones in the whitelist. At the same time, this example can also be combined with Example 2, which will not be elaborated here.

[0073] The base station energy saving system provided in the present application is described below. The base station energy saving system described below and the base station energy saving method described above can be referenced to each other.

[0074] Please refer to Figure 4 , Figure 4 A base station energy saving system 400 includes an acquisition module 410 , a comparison module 420 and a control module 430 .

[0075] Exemplarily, the acquisition module 410 is used to acquire the position information of the aircraft entering the monitoring area.

[0076] Exemplarily, the comparison module 420 is used to compare the location information with the cell coverage corresponding to the base station.

[0077] Exemplarily, the control module 430 is used to control the base station to enter an energy-saving state and perform corresponding energy-saving operations when the locations of all aircraft are outside the coverage of the cell corresponding to the base station, where the energy-saving operations include adjusting the base station power and shutting down some functional modules.

[0078] Specifically, the base station energy saving system 400 can maximize the reduction of base station energy consumption based on the characteristics of low-altitude coverage. Among them, the acquisition module 410 plays a key starting role in the base station energy saving system 400. In the low-altitude coverage scenario, the aircraft usually flies at a relatively low altitude. The acquisition module 410 is specifically used to obtain the location information of the aircraft entering the monitoring area.

[0079] The comparison module 420 compares the acquired aircraft position information with the cell coverage corresponding to the base station. In the case of low-altitude coverage, the cell coverage of the base station is mainly concentrated in the low-altitude area in the vertical direction. Through accurate comparison, it can be accurately determined whether the aircraft is within the effective coverage range (low-altitude coverage range) of the base station. If the aircraft are all outside the cell coverage range corresponding to the base station, it means that the base station has no aircraft that needs to be served in the low-altitude area, and it can accurately determine whether it is necessary for the base station to maintain full power operation or turn on all functional modules.

[0080] The control module 430 is a key part for achieving maximum reduction in energy consumption. When the comparison module 420 determines that the current position and predicted flight trajectory of all aircraft are outside the coverage range of the cell corresponding to the base station, the control module 430 will control the base station to enter the energy-saving state and perform corresponding energy-saving operations. In the scenario of low-altitude coverage, since the base station mainly serves low-altitude aircraft, when there are no aircraft at low altitude that need to be served, the base station can make substantial energy-saving adjustments. For example, adjust the base station power and reduce the transmission power to reduce energy consumption, because when there is no low-altitude aircraft that needs signal coverage, there is no need to maintain a higher power output. At the same time, turn off some functional modules, which can be dedicated to low-altitude aircraft services or need to be turned on when there are aircraft, such as some modules for low-altitude signal enhancement or aircraft communication protocol processing. Through such energy-saving operations, the base station energy-saving system 400 effectively reduces energy consumption based on the characteristics of low-altitude coverage and achieves the goal of maximizing energy saving.

[0081] On the other hand, the present application also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the base station energy saving method provided by the above methods.

[0082] On the other hand, the present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the base station energy saving method provided above.

[0083] The embodiments of the present application provide an electronic device, a computer program product, and a processor-readable storage medium, on which the computer program stored enables the processor to implement all the method steps implemented in the above-mentioned method embodiments and to achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those in the method embodiments will not be described in detail herein.

[0084] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0085] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0086] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A base station energy saving method, characterized in that: Applicable to a base station energy-saving system comprising at least one base station, each base station having at least one active antenna unit; The method comprises: Obtain the location information of the aircraft entering the monitoring area, as well as the base station information within the monitoring area; Comparing the location information with the cell coverage area corresponding to the base station; If the current positions and predicted flight trajectories of all aircraft are outside the coverage of the cell corresponding to the base station, the base station is controlled to enter an energy-saving state and perform corresponding energy-saving operations, including adjusting the base station power and shutting down some functional modules.

2. The base station energy saving method according to claim 1, characterized in that: The obtaining of the position information of the aircraft entering the monitoring area includes: The identity information, position coordinates, heading, flight speed and flight route of the aircraft in the monitoring area are obtained through a pre-deployed aircraft information management system; the identity information is used to uniquely identify each aircraft, the position coordinates are used to represent the position information of the aircraft in the monitoring area, and the position coordinates, heading, flight speed and flight route are used to predict the flight trajectory.

3. The base station energy saving method according to claim 1, characterized in that: Before executing the step of acquiring the position information of the aircraft entering the monitoring area, the method further includes: The base station reports its base station information to the base station energy-saving system, and the base station information includes the location information, working parameter information, transmission power, base station capability information and energy-saving state transition time information of the active antenna unit reported by the base station; the base station information is used to calculate and / or simulate the coverage area of ​​each base station; wherein the location information of the active antenna unit includes longitude, latitude, and altitude; the working parameter information includes inclination, azimuth, and attitude; the base station capability information includes carrier bandwidth, user number specification, and accessible number of users; the energy-saving state transition time information includes the effective duration of turning on and off the energy-saving instruction.

4. The base station energy saving method according to claim 1, characterized in that: Before executing the step of acquiring the position information of the aircraft entering the monitoring area, the base station energy saving method includes: Based on the signal strength distribution of the active antenna unit beam, the space around each base station is divided into multiple grids of uniform or uneven size, and each grid is marked as belonging to the corresponding active antenna unit to establish the relationship between the grid and the active antenna unit.

5. The base station energy saving method according to claim 4, characterized in that: The steps of constructing the relationship between the grid and the active antenna unit include: Taking the grid point as the target, the signal strength from all active antenna units within the preset distance range from the grid point to the grid point is calculated, including the signal strength from each active antenna unit to the grid point based on the cell frequency band, the position of the active antenna unit, the transmit power of the active antenna unit, the antenna direction of the active antenna unit, the antenna pattern of the active antenna unit, the grid position, and the propagation model matching the propagation environment between the active antenna unit and the grid; For each grid point, active antenna units with signal strength greater than the target threshold are screened out, and the identification of the screened active antenna units and their corresponding signal strengths are recorded.

6. The base station energy saving method according to claim 5, characterized in that: The step of constructing the relationship between the grid and the active antenna unit also includes: Select the active antenna unit corresponding to the grid; For the same grid point, the selection methods include any of the following: The first method is to first sort all active antenna units related to the grid point according to signal strength, and then select a preset number of active antenna units at the front as the active antenna units corresponding to the grid point; The second method is to first determine the maximum signal strength in the active antenna unit corresponding to the grid point, and select the active antenna unit whose signal strength is not less than the maximum signal strength minus the preset first signal strength value as the active antenna unit corresponding to the grid point; The third method: first determine the maximum signal strength in the active antenna unit corresponding to the grid point, and then calculate the difference between each active antenna unit and the maximum signal strength, and only retain the active antenna units whose difference is not less than the preset second signal strength value as the active antenna units corresponding to the grid point.

7. The base station energy saving method according to claim 5, characterized in that: When constructing the belonging relationship between the grid and the active antenna unit, the belonging relationship mark between the grid and the active antenna unit is corrected based on the actual measurement result; When the aircraft is in the grid area and reports the true measurement value, or the base station measures the true value of the grid, the system refreshes the active antenna units of the grid and their signal strengths, and readjusts the active antenna units belonging to the grid.

8. The base station energy saving method according to claim 5, characterized in that: Comparing the location information with the cell coverage area corresponding to the base station includes: Matching the location information with a pre-divided grid; If the location information of the aircraft is within a certain grid, the relationship between the aircraft and the grid is determined, and then the corresponding active antenna unit is determined; wherein the grid area covered by the active antenna unit is regarded as a part of the cell coverage corresponding to the base station to which it belongs, thereby determining that the location information of the aircraft is within the cell coverage corresponding to the base station.

9. The base station energy saving method according to claim 8, characterized in that: Comparing the location information with the cell coverage area corresponding to the base station also includes: If a certain active antenna unit is responsible for multiple grid areas, when the aircraft is in any one of the multiple grid areas, it is determined that the aircraft is located within the coverage of the base station cell corresponding to the active antenna unit.

10. The base station energy saving method according to claim 8, characterized in that: Comparing the location information with the cell coverage area corresponding to the base station also includes: Combined with the prediction result of the flight trajectory of the aircraft, if the predicted trajectory is within multiple grid areas, or has an associated relationship with related grid areas, it is determined that the aircraft is within the coverage of the cell corresponding to the base station.

11. The base station energy saving method according to claim 8, characterized in that: When it is determined that the aircraft is within the coverage of the cell corresponding to the base station, the base station energy saving method includes: If there is only one active antenna unit used to send signals to the aircraft, this active antenna unit is directly selected; if the aircraft is located in the coverage range of multiple active antenna units, the active antenna unit that has the most continuous coverage of the aircraft's current position and its predicted trajectory and whose coverage range at least includes all predicted trajectories within the energy-saving state transition time is selected as the target active antenna unit, and other active antenna units that are related to the aircraft but have partial coverage or are discontinuous with the current position are turned off.

12. The base station energy saving method according to claim 11, characterized in that: The continuous coverage of the current position of the aircraft and its predicted trajectory is the most, which means that the coverage range must include the current position of the aircraft and the points in the predicted position of the aircraft that are adjacent to the current position, and include all predicted trajectories within the energy-saving state transition time, and the active antenna unit with the most points containing uninterrupted adjacent points is used as the target active antenna unit; when there are multiple target active antennas, the one with the strongest average signal level is selected; If there are still multiple target active antenna units, the one with the smallest signal level variance is selected.

13. The base station energy saving method according to claim 1, characterized in that: The base station energy saving method further includes: Receiving identification information sent by an aircraft when entering a monitoring area, and comparing the identification information with pre-stored identification information of a target aircraft; If the identification information of the aircraft is in the identification information of the target aircraft, the control base station performs the corresponding energy-saving operation, otherwise the position judgment of the aircraft is ignored and there is no subsequent processing flow.

14. A base station energy saving system, characterized in that: The base station energy saving system comprises: An acquisition module is used to obtain the location information of the aircraft entering the monitoring area and the base station information within the monitoring area; A comparison module, used to compare the location information with the cell coverage area corresponding to the base station; The control module is used to control the base station to enter an energy-saving state and perform corresponding energy-saving operations when the current positions and predicted flight trajectories of all aircraft are outside the coverage of the cell corresponding to the base station, wherein the energy-saving operations include adjusting the base station power and shutting down some functional modules.

15. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the base station energy saving method according to any one of claims 1 to 13.

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