Power supply control method and system for mobile communication base station

Abstract

The invention discloses a power supply control method and system for mobile communication base stations. The system comprises a plurality of communicated mobile communication base stations, a renewable energy power supply system for supplying power to the plurality of base stations, and an energy storage system, the base station comprises a power management unit, and the power management unit comprises a main controller which is used for controlling electric energy output of the renewable energy power supply system and the energy storage system according to communication traffic and prediction information of the base station; the power management unit further comprises a first clock module and a second clock module, and the first clock module is used for acquiring a real-time moment; when the electric energy output of the renewable energy power supply system to the base station is zero, the second clock module obtains the real-time moment of the first clock module and is used for calibrating and recording a third clock of each electric device in the base station; three threshold values are set for communication traffic and prediction information of the base station to switch power supply modes, power supply of the communication base station in a remote area with less human activities can be adapted under the condition of extremely low energy consumption, unnecessary remote power transmission and distribution cost is greatly reduced through renewable energy power supply, and power supply efficiency is improved. And the energy storage system can meet the longer-time power supply requirement of the communication base station, and the manual inspection cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of communication power control, and more specifically, to a power control method and system for mobile communication base stations. Background Technology

[0002] In recent years, the widespread adoption of 5G networks has led to a surge in the power consumption of communication base stations. The full-load power consumption of a 5G AAU is 3-4 times that of a 4G RRU, but the space available for equipment rooms has not expanded accordingly. This has resulted in the "battery lifespan" being reduced from 3-8 hours in the 4G era to 1-2 hours, and in extreme cases, even less than 1 hour. Due to the short coverage distance of 5G signals, to achieve the same coverage as current 4G base stations, the number of 5G base stations must be approximately three times that of 4G base stations. On the other hand, the maximum power consumption of a 5G base station is approximately 3-4 times that of a 4G base station. Therefore, the total power cost of a 5G base station will typically be 9-10 times that of a 4G base station.

[0003] Mixed power plants (grid, solar, wind, and diesel) require real-time scheduling by an EMS (Energy Management System). Current EMS algorithms are mostly based on simple threshold switching, which can lead to frequent start-ups and shutdowns, and solar curtailment, when power fluctuations are large, ultimately increasing maintenance costs.

[0004] Furthermore, due to the tight power supply in recent years and the high power consumption of 5G, there is a growing demand for power saving in the communications field. In mobile networks, to ensure the required communication quality in densely populated areas (such as public facilities, commercial facilities, and office areas), a large number of base stations and small base stations are deployed. In mobile networks, most power consumption is consumed by the wireless network, especially the base stations. Even when users are not communicating, base stations transmit and receive control signals and pilot signals, and the operation of the 5G equipment power module can cause significant power consumption. To reduce base station power consumption, techniques exist that control the base station's power supply based on measured communication status (e.g., the number of terminals communicating, communication quality, terminal status, etc.). Thus, the power supply to the base station is turned off when there is no communication with terminals, reducing the base station's power consumption. This is particularly pronounced in less active areas such as remote mountainous areas, border forests, national highways, and sparsely populated mining, forest, and grassland areas.

[0005] In existing technologies, for example, the number of terminals actually used in communication is measured, and the power supply of the base station is controlled based on this measured number. However, if the number of terminals appearing around a base station in an area that normally has no activity or communication demand increases dramatically, and communication demand rises, a power outage at the base station would leave many terminals outside the service area. Furthermore, because power is controlled on a base station-by-base station basis, even if there are no terminals in most of the area covered by the base station, the base station's power will not stop as long as there are terminals in a portion of the area. Therefore, it is practically difficult to reduce the power consumption of the base station.

[0006] Communication base stations in remote areas contribute less to the network, have low returns on investment, and long payback periods, resulting in low willingness among operators to invest in base station construction. Therefore, reducing base station investment costs is essential. Renewable energy sources can power base stations, such as pure solar-powered sites. These sites convert solar energy into electricity through a solar power generation system to power base station equipment, with some electricity stored in energy storage batteries to cope with scenarios where solar power generation is unavailable, such as cloudy or rainy days. To control base station costs, energy storage batteries are typically configured based on the site's average power output and a backup power duration of 48 hours. Currently, for base stations powered by renewable energy sources, to reduce user downtime due to depleted energy storage batteries, tiered energy-saving measures can be determined based on the remaining charge level in the energy storage batteries. If deep energy-saving measures are only activated when the remaining charge in the energy storage batteries is below a preset threshold, reducing the performance of the base station equipment, it will negatively impact user experience, especially when the remaining charge in the energy storage batteries is sufficient to support the base station equipment until sufficient power generation is achieved. Summary of the Invention

[0007] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a power control method and system for mobile communication base stations, which is suitable for energy-saving control of communication base stations in remote areas with sparse population activity, and combines the efficient use of renewable energy to meet the current needs of 5G base station construction.

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A power control method and system for mobile communication base stations, comprising a control area including multiple interconnected mobile communication base stations, is provided. Communication base stations are established in remote mountainous areas with little human activity, border forests, national highways, and sparsely populated mining, forest, and grassland areas, and the power supply system for the area is constructed using renewable energy.

[0010] Each base station is also equipped with an energy storage system that can supply power to the electrical equipment inside the base station.

[0011] Each base station includes a power management unit that is controlled by the entire control area and scheduled by higher-level power plants. The power management unit of each base station includes at least one main controller for controlling the power output of the renewable energy power supply system and the energy storage system based on the communication traffic and forecast information of the base station. In the field of communications, the number of terminals that establish communication links with the communication terminal within the base station and / or the total amount of data transmitted across all communication links can be used as a measure of communication volume. The predictive information for a base station can be the usual activity level of that base station, based on historical data or environmental factors, and predicted through methods such as training models. The power management unit also includes a first clock module and a second clock module; When the equipment in the base station implements the clock function, the clock module connects to GPS satellites through the communication module to obtain accurate time information (it can also extend its function to obtain accurate location information). When the equipment has a deviation from the GPS satellite time, it can correct its own clock time information to synchronize with the GPS satellite time. The clock module backs up the obtained time information and other data, and can also record the position and time obtained by GPS satellites when the equipment is first powered on or when there is a time deviation.

[0012] In this invention, the first clock module and the second clock module are designed into the power management unit corresponding to each base station, and the clock of each electrical device in the base station can be defined as the third clock. Correspondingly, each electrical device has a third clock module, and the second clock module is connected to the third clock module. The specific functions are set as follows: the first clock module is used to connect to GPS satellites to obtain real-time time; the second clock module obtains the accurate time information of the first clock module and is used to connect to the clock of each electrical device in the base station. When the renewable energy power supply system outputs zero power to the base station, the second clock module is used to calibrate and record the clock of each electrical device in the base station; the energy storage system of each base station is used to supply power to each electrical device in the base station. It should be noted here that when the renewable energy power supply system outputs zero power to the base station, it means that the power supply system built with renewable energy can cut off the power supply to the base station because there is no communication traffic or communication activity in the coverage area of ​​the base station for a long time, based on real-time communication traffic information and forecast information. At this time, only the energy storage system that can supply power to the electrical equipment in the base station will supply power to the base station. Clearly, the energy source of the energy storage system also comes from the input of the renewable energy power supply system. The energy storage system has a limited energy supply. Therefore, in addition to saving the power distribution of the renewable energy power supply system, it is also necessary to further save and control the energy supply of the energy storage system in order to meet the dormant power demand of the various electrical equipment in the base station for a longer period of time, that is, to extend the downtime as long as possible. When faced with a large amount of communication demand, the energy storage system can wake up the electrical equipment to work normally. The second clock module is used to calibrate and record the clocks of each electrical device in the base station. That is, the third clock module inside each electrical device. Alternatively, the third clock module can be set in the measurement and control device that corresponds to each electrical device. It is worth emphasizing that the corresponding measurement and control device and the electrical device must be powered on at the same time and go into hibernation or shutdown at the same time.

[0013] The second clock module is connected to the third clock module of each electrical device in the base station. It can receive clock signals from each electrical device in the base station. Specifically, it can record the real-time clock of each device (or the clock module of the measurement and control device corresponding to each device) in the form of a data list. When the electrical device is powered on (i.e. the clock module has power supply), the second clock module and the third clock module are calibrated and synchronized. That is, the third clock module does not connect to the GPS satellite directly through the upper-level network at the same time to synchronize the time, but synchronizes the time through the second clock module inside the power management module in the base station. It is evident that it reduces the power consumption of the power module required for direct connection to GPS satellites. At the same time, whether in hibernation, shutdown, or normal operation, the time corresponding to each working state needs to be recorded (base station management and regulations or certain technical requirements). Therefore, by connecting to the second clock module of the station's power management unit and having this module record the clock of each device, it can greatly reduce the links caused by a large number of station-based electrical equipment communicating with the outside, thereby reducing communication volume and corresponding power consumption.

[0014] The common understanding is that the power output used for the clock module does not usually consume much power. However, as a 5G device, multiple functional modules are often powered by a centralized power module in order to better distribute the output of larger power and save the overall structural volume. Therefore, the power consumed to turn on the device is usually several times that of conventional devices. Since there are many 5G devices, the power consumed by this part also accounts for a certain proportion of the capacity of the energy storage system.

[0015] In practical applications, when the power supply to the base station is cut off, the power supply to the clock module (and other basic modules) is also cut off at the same time. When the communication volume reaches a certain threshold, the power supply to the clock module and other modules is restored. The detection module in the base station that is responsible for receiving connection requests from communication terminals can be powered by its own battery. If it is used in an area with no communication activity for a longer period of time, the battery may not be able to maintain a long standby time. In this case, the communication activity of surrounding base stations or prediction information can be used to determine whether the communication volume has reached the threshold for power restoration.

[0016] When the communication volume and prediction information of the base station meet the conditions of the first preset threshold, the energy storage system supplies power to each electrical device in the base station in a low-power power supply mode. The first preset threshold can be the state when no terminal is connected to the base station network. At this time, the communication volume is limited to basic communication between the various devices in the base station, such as status feedback and regular status information recording. Alternatively, it can be set according to the usage scenario of the base station. For example, along a road in a typical remote area, an occasional small number of terminal connections will generate very little communication volume. The communication volume under a certain threshold will not affect the expected return generated by building the base station, so no power supply is required. That is, when the condition of the first preset threshold is met, the base station starts to have communication terminals or the number of communication terminals reaches a certain level. At this time, it starts to supply power to each electrical device in the base station in a low-power power supply mode. It can also be further set to supply power to some electrical devices by region. More refined regional grid segmentation methods will not be described here.

[0017] The preset first threshold also has another significance: when the communication volume is judged to have a certain upward trend based on real-time communication volume and prediction information, the power supply to various electrical devices in the base station is switched from no power supply by the energy storage system to a certain degree of low-power power supply mode to meet the lower usage requirements. This is done by first waking up the clock module, and then connecting the third clock module to the second clock module of the power management unit to realize the clock recording with time deviation at the moment of power-on, and then to the normal clock recording after clock calibration. In order to accurately record the moment t0 with time deviation at the moment of power-on. p , via t1 p ,t2 p ,t3 p ...The recorded information corresponding to the moment tn when the clock first resumes normal recording is replaced by the information recorded at the moment tn of the third clock, which is synchronized with the moment of the first clock and is also synchronized with the GPS, by counting backwards from the moment tn...t3,t2,t1,t0. p ,t2 p ,t3 pThis allows the database to store accurate clocks and corresponding record information. Powering the various electrical devices within the base station using a low-power supply mode can further meet the power requirements for low communication volumes below a preset value, defined as the first preset communication volume value.

[0018] When the communication volume and prediction information of the base station meet the conditions of the second preset threshold, the energy storage system supplies power to each electrical device in the base station in the normal power supply mode; that is, when the real-time communication volume and prediction information indicate that the communication volume is continuously increasing, it is determined that more and more terminals are appearing in the network and connecting in the coverage area of ​​the base station, showing a trend of gradually increasing activity. When the reference volume reaches a certain threshold, the energy storage system supplies power to each electrical device in the base station in the normal power supply mode to meet the needs of normal communication activities. When the second clock module determines that the clocks of each electrical device within the base station are consistent with the first clock, and the communication volume and prediction information of the base station meet the conditions of the third preset threshold, the renewable energy power supply system supplies power to each electrical device within the base station. In remote areas, a base station can cover a large area, and the distance between different electrical devices is long. When it is determined that, under the condition of power supply from the energy storage system, the third clock of each electrical device, through calibration of the second clock, is consistent with the standard satellite time of the first clock, it is determined that all electrical devices within the base station are operating normally. At this time, if the energy storage system supplies power for a long time, it will accelerate the consumption of the energy storage system's power. At the same time, the power lines between many electrical devices and the power output will also cause significant line losses. Therefore, when the communication volume and prediction information of the base station are maintained for a certain preset time, or reach a value greater than or equal to a third preset threshold of the second preset threshold, the renewable energy power supply system is switched to supply power to each electrical device within the base station. At the same time, the renewable energy power supply system can also charge the energy storage system within the base station.

[0019] It should be noted that renewable energy power supply systems can also be powered by the power grid or the mains. However, since the technical solution of this invention is applicable to remote mountainous areas with less human activity, border forests, national highways, and sparsely populated mining, forest and grassland areas, the use of renewable energy power supply systems has a more practical energy-saving purpose.

[0020] Compared with the prior art, the advantages of this invention are: This invention can adapt to the power supply of communication base stations in remote areas with minimal human activity while consuming very little energy. On the one hand, in sparsely populated areas with almost no social activity, the power supply to the base station can be stopped when the power level falls below a first preset threshold, effectively reducing energy waste. Simultaneously, as terminal connections gradually emerge, the base station's internal energy storage system can be used in a low-energy mode to supply power to maintain the needs of scenarios with few terminal activities, based on the changing trend of terminal volume. Alternatively, power supply can be withheld in cases of occasional or temporary terminal connections, such as in areas with few vehicles where only one or two terminal connection requests occur occasionally over a relatively long period, with short dwell times. In base stations with only renewable energy as external power supply, considering the requirements of construction return rate and long-term use, these connection requests can be ignored. The actual setting of the first threshold can be determined based on the actual situation of the communication base station. On the other hand, based on saving on the power distribution of renewable energy power supply systems, this invention can further save on the energy supply of energy storage systems, achieving long-term satisfaction of the dormant power needs of various electrical devices within the base station. This is suitable for remote areas where maintenance is not required for many years, ensuring uninterrupted communication supply in these areas. In low-power mode, the energy storage system supplies power to various devices within the base station to meet the needs of lower communication volumes. Simultaneously, by waking up the clock module and connecting it to the second clock module of the power management unit via a third clock module, it achieves accurate recording of communication activities and terminal connections in the database, from initial power-on clock data with time deviations to normal clock data after calibration, thus meeting regulatory requirements. When the base station's communication volume and predicted information volume remain at a certain preset time, or reach a value greater than or equal to a third preset threshold (greater than or equal to a second preset threshold), the system switches to a renewable energy power supply system to power the devices within the base station. Simultaneously, the renewable energy power supply system can also charge the energy storage system within the base station. This solution not only significantly reduces unnecessary long-distance power transmission and distribution costs through renewable energy supply but also allows the energy storage system to meet the power supply needs of the communication base station for longer periods. Without human intervention, it ensures that the renewable energy system combined with the energy storage system can meet basic communication needs in extremely remote areas, thereby greatly reducing manual maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the power supply system for the mobile communication base station of the present invention; Figure 2 This is a flowchart of the power supply control method of the present invention; Figure 3 This is a flowchart illustrating the process of waking up electrical equipment within a base station according to the present invention. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Example

[0023] This embodiment is a power control system for mobile communication base stations. As a control area, the area includes multiple interconnected mobile communication base stations. Communication base stations are established in remote mountainous areas with little human activity, border forests, national highways, and sparsely populated mining, forest and grassland areas, and the power supply system of the area is constructed using renewable energy.

[0024] In this embodiment, the renewable energy power station includes a 30kW photovoltaic system, a 10kW wind turbine, and a 30kVA diesel generator for backup power. The renewable energy power station outputs power to the grid and supplies power to surrounding communication base stations. As the upper-level power dispatching master station for each communication base station, it is equipped with or connected to existing server systems within the station, including MQTT servers and forecasting servers.

[0025] See attached document Figure 1-2 Each base station is also equipped with an energy storage system that can power the electrical equipment within the base station. The energy storage cabinet contains lithium iron phosphate and supercapacitor power supplies matched to the load of the base station. The electrical equipment within the base station includes, but is not limited to, AAU, BBU, transmission, measurement and control, and clock distribution unit (CDU). Some electrical equipment is matched with measurement and control devices to realize the status monitoring, telemetry and teleindication, and remote control information transmission and reception of this device.

[0026] Each base station includes a power management unit, which is subject to control of the entire control area and scheduling by higher-level power plants. The power management unit of each base station includes at least one main controller for controlling the power output of the renewable energy power supply system and energy storage system based on the communication traffic and forecast information of the base station. The forecast information can also be connected to the forecast server of the renewable energy power plant to receive historical data and forecast parameters from the forecast server.

[0027] In the field of communications, a common way of defining communication volume is to use the number of terminals that establish communication links with the communication terminal within the base station and / or the total amount of data transmitted across all communication links as a measure of communication volume.

[0028] The predictive information for base stations can be the usual activity level of the base station, predicted by training models based on historical data or environmental factors. The parameters take into account the current base station communication volume (uplink and downlink data traffic, number of users, service type, etc.). The communication volume prediction information is also based on historical data, AI models or network scheduling plans to predict the load trend in the future within a preset time period. At the same time, it combines the real-time power generation, photovoltaic output, wind turbine output, SOC state of charge and charging and discharging capacity of the power supply system of renewable energy power plants.

[0029] The power management unit further includes a first clock module and a second clock module; the first clock adopts a regional GPS-disciplined OCXO clock, which is sent to the power management units of each base station through the regional fiber optic E1 channel; the second clock module includes a second clock submodule and a data processing submodule. The second clock submodule is connected to the first clock and receives calibration from the first clock, while the data processing submodule is connected to the power-consuming equipment in the base station and simultaneously calibrates the clocks of each power-consuming equipment.

[0030] When the equipment in the base station implements the clock function, the clock module connects to GPS satellites through the communication module to obtain accurate time information (it can also extend its function to obtain accurate location information). When the equipment has a deviation from the GPS satellite time, it can correct its own clock time information to synchronize with the GPS satellite time. The clock module backs up the obtained time information and other data, and can also record the position and time obtained by GPS satellites when the equipment is first powered on or when there is a time deviation.

[0031] In this invention, the first clock module and the second clock module are designed into the power management unit corresponding to each base station, and the clock of each electrical device in the base station can be defined as the third clock. Correspondingly, each electrical device has a third clock module, and the second clock module is connected to the third clock module. The specific functions are set as follows: the first clock module is used to connect to GPS satellites to obtain real-time time; the second clock module obtains the accurate time information of the first clock module and is used to connect to the clock of each electrical device in the base station. When the renewable energy power supply system outputs zero power to the base station, the second clock module is used to calibrate and record the clock of each electrical device in the base station; the energy storage system of each base station is used to supply power to each electrical device in the base station. It should be noted here that when the renewable energy power supply system outputs zero power to the base station, it means that the power supply system built with renewable energy can cut off the power supply to the base station because there is no communication traffic or communication activity in the coverage area of ​​the base station for a long time, based on real-time communication traffic information and forecast information. At this time, only the energy storage system that can supply power to the electrical equipment in the base station will supply power to the base station. Clearly, the energy source of the energy storage system also comes from the input of the renewable energy power supply system. The energy storage system has a limited energy supply. Therefore, in addition to saving the power distribution of the renewable energy power supply system, it is also necessary to further save and control the energy supply of the energy storage system in order to meet the dormant power demand of the various electrical equipment in the base station for a longer period of time, that is, to extend the downtime as long as possible. When faced with a large amount of communication demand, the energy storage system can wake up the electrical equipment to work normally. The second clock module is used to calibrate and record the clocks of each electrical device in the base station. That is, the third clock module inside each electrical device. Alternatively, the third clock module can be set in the measurement and control device that corresponds to each electrical device. It is worth emphasizing that the corresponding measurement and control device and the electrical device must be powered on at the same time and go into hibernation or shutdown at the same time.

[0032] The second clock module is connected to the third clock module of each electrical device in the base station. It can receive clock signals from each electrical device in the base station. Specifically, it can record the real-time clock of each device (or the clock module of the measurement and control device corresponding to each device) in the form of a data list. When the electrical device is powered on (i.e. the clock module has power supply), the second clock module and the third clock module are calibrated and synchronized. That is, the third clock module does not connect to the GPS satellite directly through the upper-level network at the same time to synchronize the time, but synchronizes the time through the second clock module inside the power management module in the base station. It is evident that it reduces the power consumption of the power module required for direct connection to GPS satellites. At the same time, whether in hibernation, shutdown, or normal operation, the time corresponding to each working state needs to be recorded (base station management and regulations or certain technical requirements). Therefore, by connecting to the second clock module of the station's power management unit and having this module record the clock of each device, it can greatly reduce the links caused by a large number of station-based electrical equipment communicating with the outside, thereby reducing communication volume and corresponding power consumption.

[0033] The common understanding is that the power output used for the clock module does not usually consume much power. However, as a 5G device, multiple functional modules are often powered by a centralized power module in order to better distribute the output of larger power and save the overall structural volume. Therefore, the power consumed to turn on the device is usually several times that of conventional devices. Since there are many 5G devices, the power consumed by this part also accounts for a certain proportion of the capacity of the energy storage system.

[0034] In practical applications, when the power supply to the base station is cut off, the power supply to the clock module (and other basic modules) is also simultaneously cut off. When the communication volume reaches a certain threshold, the power supply to the clock module and other components is restored. The detection module in the base station, responsible for receiving connection requests from communication terminals, can be powered by an energy storage system or its own battery. The detection module uses an independent 3.6 V / 19 Ah lithium-ion battery with a static 6 µA, which can operate for 2 years in low-activity communication environments. If used in areas with no communication activity for a longer period, the battery may not be able to maintain a long standby time. In this case, the communication activity of surrounding base stations or predictive information can be used to determine whether the communication volume has reached the threshold for power restoration. At the same time, the power management unit can also be powered by an energy storage system or its own battery. When there is no renewable energy supply or other external power supply, the energy storage system and its own battery within the base station ensure uninterrupted power supply. The power management unit and detection unit account for a small portion of the overall power load and have a minimal impact on the power output of the energy storage system.

[0035] When the communication volume and prediction information of the base station meet the conditions of the first preset threshold, the energy storage system supplies power to each electrical device in the base station in a low-power power supply mode. The first preset threshold can be the state when no terminal is connected to the base station network. At this time, the communication volume is limited to basic communication between the various devices in the base station, such as status feedback and regular status information recording. Alternatively, it can be set according to the usage scenario of the base station. For example, along a road in a typical remote area, an occasional small number of terminal connections will generate very little communication volume. The communication volume under a certain threshold will not affect the expected return generated by building the base station, so no power supply is required. That is, when the condition of the first preset threshold is met, the base station starts to have communication terminals or the number of communication terminals reaches a certain level. At this time, the base station starts to supply power to each electrical device in the base station in a low-power power supply mode. When the low-power power supply mode supplies power to each electrical device in the base station, the energy storage system meets the power supply requirements of the clock module and the power requirements of communication volume below a certain preset value. In this embodiment, the certain preset value is set as the first communication volume preset value.

[0036] This can also be further configured to supply power to some electrical devices by region, and to perform more refined regional grid segmentation. As a segmentation example, the base station coverage can be divided into 4 120° sectors, and the power supply can be turned off only for the sectors where no terminal appears. This example is suitable for remote areas where the base station coverage is large and the detection equipment is relatively scattered. The preset first threshold also has another significance: when the communication volume is judged to have a certain upward trend based on real-time communication volume and prediction information, the power supply to various electrical devices in the base station is switched from no power supply by the energy storage system to a certain degree of low-power power supply mode to meet the lower usage requirements. This is done by first waking up the clock module, and then connecting the third clock module to the second clock module of the power management unit to realize the clock recording with time deviation at the moment of power-on, and then to the normal clock recording after clock calibration. In order to accurately record the moment t0 with time deviation at the moment of power-on. p , via t1 p ,t2 p ,t3 p ...The recorded information corresponding to the moment tn when the clock first resumes normal recording is replaced by the information recorded at the moment tn of the third clock, which is synchronized with the moment of the first clock and is also synchronized with the GPS, by counting backwards from the moment tn...t3,t2,t1,t0. p ,t2 p ,t3 p This allows the database to store accurate clocks and corresponding record information.

[0037] The wake-up process is as follows: a) The power management unit's second clock module has detected that low-power mode has been activated; b) The third clock module is powered on by the energy storage system, and the second clock module sends a real-time message to the third clock module of each electrical device through the communication link message; c) Each third clock returns the deviation time to the second clock module and receives the synchronization message to adjust the third clock time of this device; d) After a certain delay, the second clock module determines that the return time of the third clock is consistent with the time of the first clock, provided that the calibration is completed: Flagsync = (|offset| < 1 µs).

[0038] By supplying power to the various electrical devices within the base station in a low-power power supply mode, the power demand for low communication volume below a preset value can be further met. This low communication volume value is defined as the first communication volume preset value.

[0039] When the communication volume and prediction information of the base station meet the conditions of the second preset threshold, the energy storage system supplies power to each electrical device in the base station in the normal power supply mode; that is, when the real-time communication volume and prediction information indicate that the communication volume is continuously increasing, it is determined that more and more terminals are appearing in the network and connecting in the coverage area of ​​the base station, showing a trend of gradually increasing activity. When the reference volume reaches a certain threshold, the energy storage system supplies power to each electrical device in the base station in the normal power supply mode to meet the needs of normal communication activities. When the second clock module determines that the clocks of each electrical device within the base station are consistent with the first clock, and the communication volume and prediction information of the base station meet the conditions of the third preset threshold, the renewable energy power supply system supplies power to each electrical device within the base station. In remote areas, a base station can cover a large area, and the distance between different electrical devices is long. When it is determined that, under the condition of power supply from the energy storage system, the third clock of each electrical device, through calibration of the second clock, is consistent with the standard satellite time of the first clock, it is determined that all electrical devices within the base station are operating normally. At this time, if the energy storage system supplies power for a long time, it will accelerate the consumption of the energy storage system's power. At the same time, the power lines between many electrical devices and the power output will also cause significant line losses. Therefore, when the communication volume and prediction information of the base station are maintained for a certain preset time, or reach a value greater than or equal to a third preset threshold of the second preset threshold, the renewable energy power supply system is switched to supply power to each electrical device within the base station. At the same time, the renewable energy power supply system can also charge the energy storage system within the base station.

[0040] This solution not only significantly reduces unnecessary long-distance power transmission and distribution costs by utilizing renewable energy, but also enables energy storage systems to meet the power supply needs of communication base stations for extended periods. Without human intervention, it ensures basic communication supply in extremely remote areas through a combination of renewable energy and energy storage systems, thereby greatly reducing manual maintenance costs. Furthermore, power plants with a significant proportion of renewable energy can also meet the construction needs of communication base stations. Using a portion of the base station areas in Guoluo Prefecture, Qinghai Province, and referencing historical data, simulations based on this solution demonstrate a significant performance improvement (see attached figure). Figure 3 .

[0041] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A power control system for a mobile communication base station, characterized in that: It includes multiple interconnected mobile communication base stations, a renewable energy power supply system for powering the multiple base stations, and an energy storage system; The base station includes a power management unit, which includes a main controller for controlling the power output of the renewable energy power supply system and the energy storage system based on the communication volume and forecast information of the base station. The power management unit further includes a first clock module and a second clock module. The first clock module is used to acquire real-time time. When the renewable energy power supply system outputs zero power to the base station, the second clock module acquires the real-time time of the first clock module and is used to calibrate and record the third clock of each electrical device in the base station. The energy storage system of each base station is used to supply power to various electrical devices within the base station. When the communication volume and prediction information of the base station meet the conditions of a first preset threshold, the energy storage system supplies power to various electrical devices within the base station in a low-power supply mode. When the communication volume and prediction information of the base station meet the conditions of a second preset threshold, the energy storage system supplies power to various electrical devices within the base station in a normal supply mode. When the second clock module determines that the third clock of each electrical device within the base station is consistent with the time of the first clock module, and the communication volume and prediction information of the base station meet the conditions of a third preset threshold, the renewable energy power supply system supplies power to various electrical devices within the base station.

2. The power control system according to claim 1, characterized in that: The communication volume includes the number of terminals within the base station that establish communication links with the communication terminal and / or the total amount of data transmitted across all communication links. The predicted information of the base station is the activity level obtained by predicting through a trained model based on historical data and / or environmental factors.

3. The power control system according to claim 2, characterized in that: The first preset threshold is the value corresponding to the communication volume and prediction information when the base station has no terminal access. It may be greater than the communication volume and prediction information corresponding to the state when no terminal is connected, but less than a value of the second preset threshold.

4. The power control system according to claim 3, characterized in that: The low-power power supply mode means that when powering various electrical devices within the base station, the energy storage system meets the power supply requirements of the third clock and the power consumption requirements of communication below the first preset value.

5. The power control system according to claim 1 or 4, characterized in that: The base station also includes a detection module for receiving connection requests from communication terminals within the coverage area of ​​the base station. The detection module is connected to the main control module of the power management unit. The main control module receives the detection information from the detection module and controls the power management unit to issue a command to supply power to the base station. The detection module also includes a storage battery.

6. A power control method for a mobile communication base station based on the power control system of any one of claims 1-5, characterized in that: When the energy storage system begins to supply power to the various electrical devices within the base station in a low-power supply mode: The first clock module acquires the standard real-time time; The second clock module reads the real-time time from the first clock module and uses it as the reference time; The second clock module calibrates and records the third clock of all electrical equipment within the base station.

7. The power control method according to claim 6, characterized in that: The second clock module calibrates and records the third clock of all electrical equipment within the base station, including: The second clock module of the power management unit has detected that the low-power mode has been activated; The third clock is powered on by the energy storage system, and the second clock module sends a real-time message to the third clock of each electrical device through the communication link message. Each third clock returns the offset time to the second clock module and receives the synchronization message to adjust the third clock time; The time when the third clock returns the deviation to the second clock module is recorded as t0. p , t1 p ,t2 p ,t3 p ...to tn; Where tn is the time when the second clock module determines that the return time of the third clock is consistent with the time of the first clock module after a certain delay, and the third clock first resumes normal clock recording. The second clock module will tn…t3 p ,t2 p ,t1 p ,t0 p Replace the time tn…t3,t2,t1,t0 of the second clock module that is synchronized with it and record it in the database.

8. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for performing the method described in any one of claims 6 or 7.

9. An electronic device, characterized in that, The electronic device includes: processor; Memory used to store the processor's executable instructions; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method described in any one of claims 6 or 7.

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