WO2024093705A1 - Control method and control device for indoor distribution system - Google Patents

Abstract

The present disclosure provides a control method and a control device for an indoor distribution system. The method comprises: collecting measurement data samples respectively corresponding to a plurality of terminals in an indoor distribution cell, wherein the measurement data sample corresponding to each terminal comprises at least one of measurement time information, information about a remote ratio unit capable of detecting the terminal, and channel quality information of the terminal detected by the remote radio unit; and according to the measurement data samples respectively corresponding to the plurality of terminals, determining energy-saving time periods respectively corresponding to a plurality of remote ratio units in the indoor distribution cell, wherein the energy-saving time period corresponding to each remote ratio unit is used for executing a power-off operation on the remote ratio unit.

Description

Control method and control device of indoor distribution system

This disclosure claims priority to Chinese patent application No. 202211349513.4, filed on October 31, 2022, the entire contents of which are incorporated by reference into this application.

Technical Field

The present disclosure relates to the field of communication technology, and in particular to a control method and control device for an indoor distribution system.

Background technique

The indoor distribution system uses relevant technical means to evenly distribute the signals of mobile communication base stations in every corner of the room, thereby ensuring that the indoor area has good signal coverage and is used to improve the quality of mobile communications in buildings.

Summary of the invention

On the one hand, an embodiment of the present disclosure provides a control method for an indoor distribution system. The control method includes: collecting measurement data samples corresponding to multiple terminals in an indoor cell, wherein the measurement data samples corresponding to each terminal include measurement time information, information about a radio remote unit that can detect the terminal, and at least one of channel quality information of the terminal detected by the radio remote unit. Energy-saving time periods corresponding to multiple radio remote units in the indoor cell are determined based on the measurement data samples corresponding to the multiple terminals, and the energy-saving time periods corresponding to each radio remote unit are used to perform a power-off operation on the radio remote unit.

On the other hand, an embodiment of the present disclosure provides a control device. The control device includes a sample collection unit and a time determination unit. The sample collection unit is used to collect measurement data samples corresponding to multiple terminals in an indoor cell, and the measurement data samples corresponding to each terminal include measurement time information, radio frequency remote unit information that can detect the terminal, and at least one of the channel quality information of the terminal detected by the radio frequency remote unit; the time determination unit is used to determine the energy-saving time periods corresponding to the multiple radio frequency remote units in the indoor cell according to the measurement data samples corresponding to the multiple terminals, and the energy-saving time periods corresponding to each radio frequency remote unit are used to perform a power-off operation on the radio frequency remote unit.

In another aspect, an embodiment of the present disclosure provides a control device. The control device includes: a memory and a processor; the memory and the processor are coupled; the memory is used to store a computer program; when the processor executes the computer program, the control method of the indoor distribution system described in any of the above embodiments is implemented.

On the other hand, an embodiment of the present disclosure provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the control method of the indoor distribution system described in any of the above embodiments is implemented.

On the other hand, an embodiment of the present disclosure provides a computer program product, which includes computer program instructions. When the computer program instructions are executed by a processor, the control method of the indoor distribution system described in any of the above embodiments is implemented.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the present disclosure, the drawings required for use in some embodiments of the present disclosure will be briefly introduced below. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and a person skilled in the art can also obtain other drawings based on these drawings.

FIG1 is a diagram of an indoor distribution system architecture according to some embodiments;

FIG2 is a block diagram of a control device of an indoor distribution system according to some embodiments;

FIG3 is a flow chart of a control method of an indoor distribution system according to some embodiments;

FIG4 is a schematic diagram of a process of finding a minimum pRRU set using a greedy algorithm according to some embodiments;

FIG5 is an example diagram of n-order transition probabilities between pRRUs in an indoor distribution system according to some embodiments;

FIG6 is a schematic diagram of a process of finding a minimum pRRU set using an ant colony algorithm according to some embodiments;

FIG7 is a schematic diagram of a control device according to some embodiments;

FIG8 is a schematic diagram of the structure of another control device according to some embodiments.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the technical solutions of the present disclosure will be clearly and completely described below in conjunction with the drawings in the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

It should be noted that, in the present disclosure, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the present disclosure should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a detailed manner.

In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

In the description of the present disclosure, unless otherwise specified, "/" means "or", for example, A/B can mean A or B. "And/or" in this article is only a way to describe the association relationship of associated objects, indicating that there can be three relationships, for example, A and/or B can mean: only A, only B, and A and B. In addition, "at least one" means one or more, and "a plurality" means two or more.

In some technologies, a base station of an indoor distribution system usually includes dozens to hundreds of Pico Remote Radio Units (pRRUs). However, since each pRRU only covers a small area indoors, there are often situations where there are no terminals in the area covered by the pRRU. At this time, the redundant pRRUs will consume a lot of energy if they are powered on for a long time.

FIG1 is a diagram of an indoor distribution system architecture according to some embodiments. The system architecture includes: a baseband processing unit (Building Base band Unit, BBU) and multiple pRRUs. Multiple pRRUs can form a cell in an indoor distribution system.

Each pRRU covers a small area indoors. In general, each pRRU can provide signals for terminals in the area covered by the pRRU. When there are no terminals in the area covered by the pRRU during a stable period of time, the pRRU can be powered off to save energy. In addition, when a terminal is about to appear in the area covered by the pRRU in the powered-off state, it is necessary to power on the adjacent pRRUs in the area in advance.

In order to maximize energy saving, under the premise of ensuring the terminal experience, the method of manually setting the timed power-off is often adopted, or the power-off operation is performed based on the current measurement results, that is, if the terminal is not detected in the area covered by the pRRU, the pRRU can be powered off. However, the power-off and power-on process of the pRRU takes a relatively long time. Some technical solutions only select the pRRU that needs to be powered off based on a single measurement data, and cannot control the pRRU that can be powered off stably within a period of time. Therefore, there is a possibility that the pRRU will be powered off by mistake, which affects the terminal experience and causes energy loss. In addition, when the terminal is in motion, only the adjacent pRRUs in the pRRU area in the power-off state are powered on in advance, which may not meet the needs of the moving terminal.

The above-mentioned moving terminal can be understood as a terminal in a moving state.

In view of this, the embodiments of the present disclosure provide a control method and control device for an indoor distribution system. The method finds out the pRRUs that can perform power-off operations in an area without terminal coverage within a relatively stable period of time by integrating historical long-term data, so as to avoid affecting the terminal experience. In addition, in the same time period, when multiple pRRUs cover the same terminal at the same time, the embodiments of the present disclosure can find out the minimum set of pRRUs required to cover the current terminal in each time period, and perform power-off operations on the redundant pRRUs, thereby saving energy. At the same time, the embodiments of the present disclosure can perform power-on operations on the pRRUs on the possible movement routes of the moving terminal in advance, which can better meet the needs of the moving terminal.

FIG2 is a schematic diagram of the structure of a control device of an indoor distribution system according to some embodiments. The schematic diagram of the structure is mainly composed of a big data processing unit and a base station, and includes the following modules: a real-time data acquisition module 201, a long-term data storage module 202, a power-off period Learning module 203 , pRRU neighbor relationship learning module 204 , inter-pRRU transfer model learning module 205 and pRRU power-off control module 206 .

The real-time data acquisition module 201 is used to collect the measurement data samples of the terminal detected by the pRRU in real time, and the measurement data samples at least include the measurement time information, the measured information of the pRRU covering the same terminal, and the detection channel quality information of the same terminal detected by each pRRU. The detection channel quality information here can be understood as the receiving power of the sounding reference signal (SRS) of the terminal received by a pRRU.

The long-term data storage module 202 is used to store measurement data samples over a relatively long period of time.

The power-off period learning module 203 is used to determine the set of the minimum pRRUs required to cover the current terminal in each time period based on the measurement data samples stored in the long-term data storage module 202, that is, to determine the pRRUs that can be used for powering off in different time periods and determine the energy-saving time period for each pRRU.

The pRRU neighbor relationship learning module 204 is used to determine the neighbor relationship between each pRRU according to the measurement data samples stored in the long-term data storage module 202 .

The pRRU inter-transfer model learning module 205 is used to learn the transfer model between each pRRU in the indoor distribution system and obtain the n-order transfer probability between each pRRU based on the measurement data samples stored in the long-term data storage module 202. When a pRRU in a powered-on state detects a moving terminal, the pRRU can predict the moving route of the current moving terminal in advance. If the n-order transfer probability between the pRRU and other pRRUs on the moving route exceeds a preset threshold, it means that the other pRRUs on the moving route need to be powered on, thereby ensuring a good experience for the moving terminal.

The pRRU power-off control module 206 is used to perform a power-off operation on the energy-saving pRRU according to different energy-saving levels, based on the energy-saving time period of each pRRU determined by the power-off time period learning module 203. If the current energy-saving pRRU has no terminals covered by it, the energy-saving pRRU is powered off according to different energy-saving levels. At the same time, the number of terminals covered by the pRRU that has not been powered off and the number of terminals with weak coverage are detected, and based on the movement route of the current moving terminal predicted by the inter-pRRU transfer model learning module 205, the pRRU on the movement route is powered on. The weak coverage here can be understood as one or more of the detection channel quality information of the same terminal detected by multiple pRRUs at the same time. The terminal detection channel quality information detected by one or more pRRUs is relatively poor.

Based on the structural diagram provided by the above embodiment of the present disclosure, the implementation scheme of the embodiment of the present disclosure is introduced below with the control device as the execution subject. The control device may include, for example, the control device of the indoor distribution system mentioned above.

An embodiment of the present disclosure provides a control method for an indoor distribution system. As shown in FIG. 3 , the method includes step 301 and step 302 .

Step 301: A control device collects measurement data samples corresponding to a plurality of terminals in a cell, wherein the measurement data sample corresponding to each terminal includes at least one of measurement time information, information of a remote radio unit capable of detecting the terminal, and channel quality information of the terminal detected by the remote radio unit.

The control device in the embodiment of the present disclosure can be understood as the big data processing unit in Figure 2.

The radio remote unit in the embodiment of the present disclosure may be a pRRU.

It can be understood that the measurement data samples here may be the measurement data samples collected by the real-time data acquisition module 201 in Figure 2. The detailed steps of obtaining the measurement data samples are as follows.

Step 301a: Determine the energy-saving time period range of the indoor cell according to the cell-level load index within a preset time period.

The cell-level load index here can be understood as the number of terminals and the utilization rate of the physical resource block (PRB) in the indoor cell. When the number of terminals and the PRB utilization rate in the indoor cell are lower than the preset threshold within a certain period of time, the certain period of time can be understood as an energy-saving time period range of the indoor cell, that is, the indoor distribution system within the current energy-saving time period is in a low-load state. For example, based on historical contemporaneous data, if the number of terminals and the PRB utilization rate in the indoor cell have been lower than the preset threshold within a certain period of time, then the certain period of time is the energy-saving time period range of the indoor cell. The historical contemporaneous data here can be understood as the measurement data samples of the terminal detected by the pRRU in the same period of time within M days before the current time.

Step 301b: determine energy-saving radio remote units corresponding to multiple energy-saving time periods within the energy-saving time period range of the indoor cell according to the measurement data samples corresponding to multiple terminals within the preset time period.

For example, the pRRU corresponding to each energy-saving time period in the indoor cell can be determined based on the terminal measurement data samples detected by the pRRU collected by the real-time data collection module 201 in the energy-saving time period of the indoor cell. The detailed implementation steps are as follows.

Step 301b1: Determine a first set of remote radio units that are outside a preset energy saving range among the plurality of remote radio units.

The preset energy saving range can be understood as a set of pRRUs that can perform power-off operations. If a pRRU is not within the preset energy saving range, the pRRU belongs to the first remote radio unit set.

In some embodiments, the first RF remote unit set here can be understood as a pRRU that is manually set and does not need to perform a power-off operation. It can also be understood that when the terminal transfers between different pRRUs in the indoor cell, the transfer probability of the pRRU in the edge area of the indoor cell will always exceed the preset threshold. In order to ensure that the area covered by the indoor cell remains unchanged, the pRRU does not perform a power-off operation. The pRRU can be used as a RF remote unit in the first RF remote unit set. It can be understood that the pRRUs in the first RF remote unit set do not need to perform a power-off operation, and the pRRUs in the first RF remote unit set are the pRRUs that must be retained in the indoor cell.

Step 301b2: determine a set of second remote RF units outside a preset energy-saving range within each energy-saving time period based on measurement data samples corresponding to a plurality of terminals respectively; for the second remote RF units corresponding to each energy-saving time period, the set of second remote RF units includes a remote RF unit of at least one user measured during the same period in history for the energy-saving time period, or a remote RF unit with the strongest channel quality measured for any terminal during the same period in history, or a minimum remote RF unit set that meets the coverage requirements and is determined according to a preset algorithm rule based on measurement data samples during the same period in history.

For example, in the first case, based on historical data from the same period, all pRRUs in the area covered by the terminal in the indoor cell constitute the second radio remote unit set. Or, in the second case, based on historical data from the same period, all pRRUs with the strongest channel detection quality in the area covered by the terminal constitute the second radio remote unit set. Or, in the third case, based on historical data from the same period, the minimum number of pRRUs required in the area covered by the terminal is determined according to a preset algorithm rule to constitute the second radio remote unit set, that is, the minimum pRRU set.

It can be understood that when the second RF remote unit set is the first case, that is, it includes all pRRUs in the area covered by the terminal, the number of pRRUs in the indoor cell that are powered on during the energy-saving period is the largest, that is, the energy-saving level of the indoor cell is the lowest at this time, but the channel detection quality of the terminal in the pRRU coverage area is extensive. When the second RF remote unit set is the second case, that is, it includes all pRRUs with the strongest channel detection quality, the energy-saving level of the indoor cell will be better than the RF remote unit set in the first case, and the channel detection quality of the terminal in the pRRU coverage area will be more balanced. When the second RF remote unit set is the third case, that is, it includes the least number of pRRUs required when the area where the terminal is located is fully covered, the energy-saving level of the indoor cell is better than the RF remote unit set in the first and second cases, but the channel detection quality of the terminal in the pRRU coverage area is the weakest. It can be understood that the second RF remote unit set is determined based on the distribution characteristics of the terminals in each time period.

It can be understood that the collection of historical data for the same period is performed when all pRRUs are not in the shutdown state.

Step 301b3: determine the energy-saving remote radio units corresponding to each energy-saving time period within the energy-saving time period of the indoor cell according to the first remote radio unit set and the second remote radio unit set outside the preset energy-saving range in each energy-saving time period.

Within the energy-saving time period of the indoor cell, the pRRUs outside the first set of radio remote units and the pRRUs outside the second set of radio remote units that do not need to save energy within each energy-saving time period are pRRUs that can perform power-off operations within the energy-saving time period of the indoor cell, that is, energy-saving radio remote units.

In some embodiments, the above-mentioned preset algorithm rules may include at least one of a greedy algorithm, an ant colony algorithm, a genetic algorithm or a particle swarm algorithm, and of course other algorithms may also be used, which are not limited in the embodiments of the present disclosure. In the following, each measurement data sample is assumed to be the channel quality information of a terminal that can be measured by all pRRUs on the base station side at a certain moment, and the minimum pRRU set is determined by the greedy algorithm as an example. FIG4 is a diagram based on A schematic diagram of a process of finding a minimum pRRU set using a greedy algorithm according to an embodiment of the present disclosure.

Step 301b21, collect measurement data samples of historical data for the same period.

Step 301b22: extract the pRRU that can effectively cover the remaining measurement data samples according to all measurement data samples collected by the base station, and put the pRRU into the minimum reserved pRRU set.

Based on the measurement data samples of the terminal collected by the real-time data collection module 201, a pRRU whose channel quality in a certain pRRU in a certain measurement data sample is greater than a preset threshold is extracted, and the pRRU is placed in the minimum reserved pRRU set, that is, a certain pRRU in a certain measurement data sample can effectively cover another measurement data sample, that is, a certain pRRU belongs to the minimum reserved pRRU set. Assume that a total of 100 terminal measurement data samples are collected now, and the measurement data samples here can be understood as a measurement report, pRRU1 collects 30 measurement reports, and pRRU2 collects the remaining 20 measurement reports, then pRRU1 belongs to the minimum reserved pRRU set.

Step 301b23: Eliminate the covered measurement data samples.

According to the example of the above steps, if the remaining measurement data samples are 20 measurement reports collected by pRRU2, the terminal measurement data samples of the 20 measurement reports included in the above pRRU2 are removed.

Step 301b24: determine whether all measurement data samples are covered. If not, re-execute step 301b22 until the yes condition is met, and determine the pRRUs that can cover all measurement data samples, that is, the minimum pRRU set.

For example, from the remaining 805 data measurement samples, a pRRU whose measurement data sample can effectively cover another measurement data sample is found again, and the found pRRU is put into the minimum reserved pRRU set. After multiple rounds of iterations, the pRRU that can cover all the measurement data samples is the pRRU in the minimum pRRU set.

It should be understood that when repeatedly executing step 301b21 to step 301b22, a pRRU may be randomly selected instead of fixedly selecting a pRRU that can cover the most remaining terminal measurement data samples.

Greedy algorithms, ant colony algorithms, genetic algorithms, and particle swarm algorithms can find local optimal solutions when searching for the minimum pRRU set. The greedy algorithm is relatively simpler to implement and has a smaller amount of calculation when searching for the minimum pRRU set. However, when searching for the minimum pRRU set using ant colony algorithms, genetic algorithms, and particle swarm algorithms, if the number of iterations is increased, a more accurate result may be obtained, that is, the number of pRRUs in the minimum pRRU set found may be smaller.

Step 301c: based on the pRRU sets to be retained determined in different time periods, obtain the pRRU sets that can save energy in different time periods.

It can be understood that the pRRUs other than the minimum pRRU set within the energy-saving time period of the indoor cell constitute the pRRU set that can save energy in different time periods.

Step 302: determine energy-saving time periods corresponding to multiple remote radio units in the indoor cell according to measurement data samples corresponding to multiple terminals, and use the energy-saving time period corresponding to each remote radio unit to power off the remote radio unit.

It can be understood that the energy-saving time periods corresponding to the multiple remote radio frequency units are the energy-saving time periods of each pRRU determined by the power-off time period learning module 203 in FIG2. The energy-saving time period corresponding to each remote radio frequency unit is used to perform a power-off operation on the remote radio frequency unit, which can be understood as the pRRU power-off control module 206 in FIG2 performing a power-off operation on the energy-saving pRRU.

Step 302a: when energy-saving time periods corresponding to a plurality of remote radio units are determined, for a single remote radio unit among the plurality of remote radio units, a power-off operation is performed on the single remote radio unit in at least one energy-saving time period corresponding to the single remote radio unit.

For example, the energy-saving time periods corresponding to pRRU1 are T1, T2, and T3, so the pRRU1 can be powered off in the time period of T1, T2, or T3. T1, T2, or T3 can be understood as discrete time periods of pRRU1.

Step 302b: For any remote radio unit in the indoor cell, if the detection result of the terminal meets the requirement of the preset energy-saving level within the energy-saving time period of the remote radio unit, the remote radio unit is powered off within the energy-saving time period of the remote radio unit. operate.

When the number of terminals in the energy-saving time period corresponding to a pRRU meets the energy-saving level requirement, the pRRU is powered off. In some embodiments, the energy-saving level requirement mainly includes the following three situations.

Energy saving level 1: The energy saving level is used to indicate that the remote radio unit cannot detect the terminal during the energy saving period.

When there is no terminal in the area covered by the pRRU during the energy-saving period, the pRRU is powered off.

Energy saving level 2: the energy saving level is used to indicate that in the energy saving period, all terminals detected by the remote radio unit do not regard the remote radio unit as the remote radio unit with the strongest channel quality.

When there are terminals in the area covered by the pRRU in the energy-saving time period and there are other pRRUs in the area, if the pRRU detects that the channel detection quality of the terminal in the area is not the strongest channel quality, the pRRU can be powered off.

For example, if the area covered by pRRU1 overlaps with the area covered by pRRU2, and there are multiple terminals in the coverage area of pRRU1, and the channel detection quality of the multiple terminals detected by pRRU2 is stronger than the channel detection quality of the multiple terminals detected by pRRU1, then the power-off operation is performed on pRRU1 which is in the energy-saving time period.

Energy saving level 3: The energy saving level is used to indicate a time period in which energy saving can be achieved. All terminals detected by the remote radio unit are within the effective coverage of the remote radio unit outside the preset energy saving range.

When there are terminals in the area covered by the pRRU in the energy-saving time period, and all terminals in this area can be covered by the pRRUs in the first radio remote unit set and/or the second radio remote unit set described in steps 301b1 to 301b2, a power-off operation is performed on the pRRU in the energy-saving time period.

In some embodiments, the control device may further re-power on the radio remote units that meet the following conditions.

Condition a: acquiring the cell-level load of the indoor cell in real time, and when the cell-level load is greater than or equal to a first preset threshold, powering on all the radio remote units in the indoor cell that are in a powered-off state.

For example, when the number of terminals and the PRB utilization rate in the indoor cell are greater than or equal to the first preset threshold, a power-on operation is performed on all pRRUs in the indoor cell that are in a power-off state.

Condition b: obtaining in real time the number of terminals connected to the non-powered RF remote units in the indoor cell. When the number of terminals connected to the non-powered RF remote units is greater than or equal to a second preset threshold, powering on the RF remote units that are adjacent to the non-powered RF remote units and are in a powered-off state.

That is, when the number of terminals in the area covered by the pRRU in the powered-on state is greater than or equal to the second preset threshold, the power-on operation is performed on the pRRUs adjacent to the pRRU.

Condition c: Real-time acquisition of the number of weak coverage terminals corresponding to the non-powered RF remote units in the indoor cell. When the number of weak coverage terminals corresponding to the non-powered RF remote units is greater than or equal to the third preset threshold, a power-on operation is performed on the RF remote units adjacent to the non-powered RF remote units and in the powered-off state. A weak coverage terminal is a terminal whose channel quality is less than or equal to the fourth preset threshold.

The weak coverage terminal here can be understood as one or more pRRUs whose terminal detection channel quality information is relatively poor among the pRRUs that are in the power-on state during the energy-saving period of the indoor cell. If the number of weak coverage terminals is greater than or equal to the third preset threshold, the power-on operation is performed on the one or more pRRUs whose detection channel quality information is relatively poor and the pRRUs adjacent to the one or more pRRUs whose detection channel quality information is relatively poor.

Condition d: when the number of terminals detected by the key remote radio frequency unit preset in the indoor cell within the fourth preset time period is greater than or equal to the fifth preset threshold, power on all the remote radio frequency units in the indoor cell that are in the power-off state.

The key RF remote unit here can be understood as a pre-configured designated RF remote unit. For example, it is manually configured at a key position. pRRU, for example, a pRRU placed at the door or elevator entrance of a building. When the pRRU at a key location detects that the number of terminals is greater than or equal to the fifth preset threshold within a certain period of time, a power-on operation is performed on all pRRUs in the indoor cell that are in a power-off state.

Condition e: predicting the movement trajectory of the target terminal according to the transfer probability of the target terminal between different RF remote units in the indoor cell. Powering on the RF remote units in the indoor cell that are on the movement trajectory of the target terminal and in a powered-off state.

When the target terminal is in motion, the possible movement route of the target terminal can be predicted based on the transfer probability of the target terminal between different pRRUs. When a pRRU detects a moving target terminal, the pRRU on the possible movement route of the moving target terminal can be powered on in advance.

It can be understood that conditions b and c are applicable to relatively stationary or slowly moving terminals, and condition e is applicable to terminals in motion.

In some embodiments, obtaining the neighboring pRRUs of a certain pRRU may be implemented through the following scheme.

Solution 1: Among the terminals belonging to any radio frequency remote unit, if the ratio of the number of terminals that detect the signal of the first radio frequency remote unit in the indoor cell to the number of terminals belonging to any radio frequency remote unit within a preset time range is greater than or equal to a sixth preset threshold, the radio frequency remote units adjacent to any radio frequency remote unit include the first radio frequency remote unit.

Assume that there are one or more terminals in the area covered by a certain pRRU, and at least one of the one or more terminals is also covered by another pRRU. The proportion of the number of terminals covered by another pRRU can be obtained by calculation. If this proportion is greater than the sixth preset threshold, the other pRRU is considered to be an adjacent pRRU of a certain pRRU. For example, there are 100 terminals in the area covered by pRRU1, and 50 of these 100 terminals are also covered by pRRU2, then the proportion of the number of terminals of pRRU2 is 50/100=0.5. Assume that the sixth preset threshold is 0.2, 0.5＞0.2, and pRRU2 is an adjacent pRRU of pRRU1.

Solution 2: any remote radio unit with the strongest channel quality of any terminal is switched to the first remote radio unit, and the remote radio units adjacent to any remote radio unit include the first remote radio unit.

A pRRU in an area covered by a terminal has the strongest channel detection information for a terminal. When a terminal moves from an area covered by a pRRU with the strongest channel detection information for a terminal to another pRRU with the strongest channel detection information for a terminal, the other pRRU is the adjacent pRRU of the pRRU. For example, pRRU1 in an area covered by a terminal has the strongest channel detection information for the terminal. When the terminal moves from pRRU1 to pRRU2, pRRU2 has the strongest channel detection information for the terminal. Then, pRRU2 is the adjacent pRRU of pRRU1.

In some embodiments, the power-on operation is performed on the pRRUs on the possible moving route of the moving terminal mainly through the following steps.

Step 1: Determine the motion event of the target terminal. The motion event is used to indicate the radio remote units experienced by any terminal in a time sequence during a call.

In a target terminal movement event, the pRRUs that the target terminal passes through in chronological order during a call are the pRRUs on the target terminal's possible movement route. The pRRU here refers to the strongest pRRU in the area covered by the terminal.

In some embodiments, the call process here can be understood as including establishing a radio resource control (RRC) request, an RRC request duration phase, and an RRC release duration phase. During the passing process, the pRRU with the strongest measurement data sample of the target terminal is detected in the area covered by the terminal. For example, in an RRC request, the pRRUs with the strongest measurement data samples of the target terminal detected in the target terminal coverage area during the RRC release duration phase are pRRU1, pRRU2, and pRRU3 in sequence. Then, in this RRC request, the area where the target terminal is moving passes through pRRU1 with the strongest channel detection quality, pRRU2 with the strongest channel detection quality, and pRRU3 with the strongest channel detection quality in sequence, that is, the terminal is transferred between pRRU1, pRRU2, and pRRU3, and the transfer that occurs can be understood as a movement event of the target terminal. It can be understood that if the strongest pRRU of the measurement data sample of the target terminal detected in a terminal coverage area during the RRC release duration phase is always pRRU1, it means that the target terminal is not moving.

Step 2: According to the motion event of any terminal, at least one n-th order transition probability of any terminal moving from any RF remote unit of the indoor cell to other RF remote units in energy-saving state is determined.

That is, based on a movement event of a terminal, the transfer probability of the terminal moving from a certain pRRU to another pRRU in an energy-saving state may be counted.

Step 3: Determine the sum of at least one n-order transition probability of any terminal between any remote RF unit and other remote RF units in energy saving state according to at least one n-order transition probability between any remote RF unit and other remote RF units in energy saving state, where n is an integer greater than or equal to 1.

The n-order transfer probability here can be understood as the probability that any terminal moves from any RF remote unit to any other RF remote unit in energy-saving state after n steps. That is, the probability that a terminal in the coverage area of a pRRU transfers to another pRRU after n steps of transfer. The probability of each step of transfer is independent, that is, it satisfies the Markov chain condition. The calculation formula for each n-order transfer probability here is as follows.

In the above formula,

represents the probability of transferring from pRRU0 to pRRUn after n steps, n = 1, 2, ..., N, where N is a positive integer.

Represents the probability of a direct one-step transition from pRRUn-1 to pRRUn.

s represents the transfer state set, which here refers to the set of all pRRUs in the cell.

Then, the sum of the n-th order transition probabilities of a terminal moving from a certain pRRU to one or more other pRRUs in the energy-saving state may be counted.

Step 4: In response to the sum of at least one n-th order transition probability of any terminal in any radio remote unit being greater than or equal to a seventh preset threshold, determining a motion trajectory corresponding to at least one n-th order transition probability of any terminal in any radio remote unit as the motion trajectory of any terminal.

When a terminal is detected in a certain pRRU, if the sum of the n-order transition probabilities of the terminal moving to one or more other pRRUs is greater than or equal to the seventh preset threshold, the multiple pRRUs experienced by the terminal in the process of moving from a certain pRRU to one or more other pRRUs can be understood as the movement trajectory of the terminal.

For example, as shown in FIG5 , assuming that N=3, the seventh preset threshold is 0.2, when pRRU0 detects the terminal, it can be obtained that:

The probability of the terminal moving to pRRU1: 1st-order transition probability 0.5;

The probability of the terminal moving to pRRU4: 1st-order transfer probability 0.3;

The probability of the terminal moving to pRRU2: 2nd-order transfer probability 0.5×0.5=0.25;

The probability of the terminal moving to pRRU5: the second-order transfer probability is 0.5×0.4+0.3×0.3=0.29, the third-order transfer probability is 0.5×0.5×0.8=0.2, and the probability of transferring from pRRU0 to pRRU5 is 0.29+0.2=0.49.

Because the probability of the terminal moving to pRRU1, the probability of the terminal moving to pRRU4, the probability of the terminal moving to pRRU2 and the probability of the terminal moving to pRRU5 are all greater than the seventh preset threshold 0.2, when pRRU0 detects the terminal, pRRU1, pRRU2, pRRU3, pRRU4 and pRRU5 are all pRRUs on the possible movement trajectory of the terminal, and all pRRUs on the movement trajectory must be powered on.

In some embodiments, the embodiments of the present disclosure may also be implemented through the following solutions. For example, the embodiment of the present disclosure detects the measurement data samples of the terminal through different pRRUs in the indoor cell to obtain the pRRUs in the terminal coverage area, which may be replaced by detecting the pRRUs in the terminal coverage area through monitoring equipment such as cameras.

The embodiment of the present disclosure determines the energy-saving time period of the pRRU based on historical data of the same period, which can be achieved through manual identification. The manual identification method can be understood as on-site inspection by staff.

The embodiment of the present disclosure obtains the adjacent pRRU of a certain pRRU through scheme 1 and scheme 2, and determines through steps 1 to 4 that the pRRU on the possible movement route of the moving terminal can be replaced by other adjacent geographical locations obtained through the network engineering information of a certain pRRU. For example, the pRRU information on the moving route is obtained through the aisle information of the indoor elevator, and is confirmed by manual identification.

In terms of the device of the embodiment of the present disclosure, a big data processing unit may not be used to store and process historical data, and the unit may be integrated into the BBU.

The following describes how the ant colony algorithm is used to find the minimum pRRU set. FIG6 is a flow chart of using the ant colony algorithm to find the minimum pRRU set according to an embodiment of the present disclosure. The pRRU set is referred to as ReservedSet, and the minimum pRRU set is referred to as minReservedSet.

Step 601: Based on all measurement data samples in the same time period of the previous N days, extract a pRRU set whose effective coverage remaining measurement data samples are greater than or equal to 0.

Step 602: Initialize the ant colony algorithm and calculate the initial pheromone strength of each pRRU in the pRRU set.

The initial pheromone strength (i) of each pRRU in the ReservedSet = 1/the total number of pRRUs in the ReservedSet.

Step 603: Calculate the probability of each pRRU being selected according to the pheromone strength of each pRRU in the pRRU set, and put the required pRRUs into the minimum pRRU set based on the probability of each pRRU being selected.

Step 604: remove the pRRUs that are put into the minimum pRRU set from the pRRU set to be selected, and then recalculate the probability of the remaining pRRUs being selected according to the pheromone strength of the remaining selectable pRRUs.

The probability of the remaining pRRUs being selected is the sum of the initial pheromone strength (i) of each pRRU/the pheromone strength of the remaining pRRUs.

Step 605: Repeat step 603 to step 604 until the pRRUs in the minimum pRRU set can cover all measurement data samples.

Step 606: After a round of selection is completed, the pheromone strength of the pRRUs in the minimum pRRU set is updated.

Pheromone strength = remaining pheromone strength + pheromone increase.

If a pRRU is selected, the pheromone increase amount of the pRRU is equal to 1/the number of pRRUs in minReservedSet; otherwise, the pheromone increase amount of the pRRU is 0.

The remaining pheromone intensity of the pRRU is equal to the pheromone of the previous round of the pRRU multiplied by (1-pheromone volatility factor), and the pheromone volatility factor is set by parameters.

Step 607: Repeat steps 603 to 605 until the number of pRRUs placed in the minimum pRRU set is the least and can cover all measurement data samples.

The following will take an example to illustrate how the ant colony algorithm searches for the minimum pRRU set.

Assume that based on all the measurement data samples in the same time period of the previous N days, there are 10 pRRUs in the ReservedSet that effectively covers the remaining measurement data samples greater than or equal to 0. Then the initial pheromone strength (i) of each pRRU in the ReservedSet is 1/10.

The second round of pRRU selection in the ReservedSet is performed, and the required pRRUs are placed in the minReservedSet until the pRRUs in the minReservedSet can cover all the measurement data samples.

Assuming that after the second round of selection, the number of pRRUs in minReservedSet is 5, namely pRRU1 to pRRU5, the increase in pheromone is 1/5=0.2.

Assuming that the pheromone volatility factor is 0.1, the remaining pheromone strength of pRRU1 to pRRU5 is 0.1×(1-0.1)=0.09. After a round of selection, the updated pheromone strength of pRRU1 to pRRU5 is 0.09+0.2=0.29. The pheromone strength of other unselected pRRUs is 0.1*(1-0.1)+0=0.09. Other unselected pRRUs refer to pRRU6 to pRRU10.

After that, multiple selections are performed until the number of pRRUs placed in minReservedSet is the minimum and can cover all measurement data samples. Each round of selection process can be understood as multiple selections of pRRUs to place the required pRRUs into minReservedSet.

During the initial selection, the initial pheromone strength of each pRRU in the ReservedSet is 0.1, so the selection probability of each pRRU is equal.

In the second round of selection, the pheromone strength of pRRU1 to pRRU5 is 0.29, and the pheromone strength of pRRU6 to pRRU10 is 0.09. Then, when the pRRUs required for the first step are selected and put into minReservedSet, the sum of the pheromone strengths of the remaining pRRUs = 0.29×5+0.09×5, so the probability of pRRU1 to pRRU5 being selected is 0.29/(0.29×5+0.09×5), and the probability of pRRU6 to pRRU10 being selected is 0.09/(0.29×5+0.09×5).

Assume that pRRU1 is put into minReservedSet, and at this time minReservedSet = (pRRU1), then the sum of the pheromone strengths of the remaining pRRU2 to pRRU10 = 0.29×4+0.09×5. Therefore, when the second step is performed, the probability of pRRU2 to pRRU5 being selected is 0.29/(0.29×4+0.09×5), and the probability of pRRU6 to pRRU10 being selected is 0.09/(0.29×4+0.09×5).

Assume that pRRU6 is put into minReservedSet, then minReservedSet = (pRRU1, pRRU2), and the remaining pRRUs are pRRU2 to pRRU5 and pRRU7 to pRRU10. Then the sum of the pheromone strengths of the remaining pRRUs = 0.29×4+0.09×4. Therefore, when the third step is performed, the probability of pRRU2 to pRRU5 being selected is 0.29/(0.29×4+0.09×4), and the probability of pRRU7 to pRRU10 being selected is 0.09/(0.29×4+0.09×4).

The above process is repeated until the number of pRRUs placed in minReservedSet is the least and can cover all measurement data samples, which is the minimum pRRU set.

It is understandable that, in order to realize the above functions, the control device includes hardware structures and/or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiments of the present disclosure.

The embodiments of the present disclosure may divide the control device into functional modules according to the above method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one functional module. The above integrated modules may be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

FIG7 is a schematic diagram of a control device according to some embodiments. The control device 70 can execute the control method of the indoor distribution system provided by the above method embodiment. As shown in FIG7 , the control device 70 includes a sample collection unit 701 and a time determination unit 702 .

The sample collection unit 701 is used to collect measurement data samples corresponding to multiple terminals in the indoor cell, where the measurement data sample corresponding to each terminal includes at least one of measurement time information, radio remote unit information capable of detecting the terminal, and channel quality information of the terminal detected by the radio remote unit.

The time determination unit 702 is used to determine energy-saving time periods corresponding to multiple RF remote units in the indoor cell according to the measurement data samples corresponding to multiple terminals, and the energy-saving time period corresponding to each RF remote unit is used to perform power-off operation on the RF remote unit.

In the disclosed embodiment, the control device further includes a range determination unit for determining the energy-saving time period range of the indoor cell according to the cell-level load index within a preset time period before collecting the measurement data samples corresponding to the plurality of terminals respectively.

In the embodiment of the present disclosure, the time determination unit 702 is used to determine the energy-saving radio remote units corresponding to multiple energy-saving time periods within the energy-saving time period of the indoor cell according to the measurement data samples corresponding to multiple terminals within the preset time period. According to the energy-saving radio remote units corresponding to multiple energy-saving time periods within the energy-saving time period of the indoor cell, the energy-saving time periods corresponding to the multiple radio remote units are determined.

In the embodiment of the present disclosure, the control device 70 further includes a set determination unit 703, which is used to determine, based on the measurement data samples corresponding to the multiple terminals in the preset time period, the energy-saving RF remote units corresponding to the multiple energy-saving time periods within the energy-saving time period of the indoor cell, and determine a first RF remote unit set outside the preset energy-saving range among the multiple RF remote units. A second RF remote unit set outside the preset energy-saving range within each energy-saving time period is determined based on the measurement data samples corresponding to the multiple terminals, and for the second RF remote unit corresponding to each energy-saving time period, the second RF remote unit set includes the historical synchronous measurement data samples of the energy-saving time period. The radio remote unit that measures at least one user, or the radio remote unit with the strongest channel quality measured for any terminal in the same period of history, or the minimum radio remote unit set that meets the coverage requirements determined according to the preset algorithm rules based on the measurement data samples in the same period of history. According to the first radio remote unit set and the second radio remote unit set outside the preset energy-saving range in each energy-saving time period, the energy-saving radio remote unit corresponding to each energy-saving time period in the energy-saving time period of the indoor cell is determined.

In the embodiment of the present disclosure, the preset algorithm rules include at least one of a greedy algorithm, an ant colony algorithm, a genetic algorithm or a particle swarm algorithm.

In the embodiment of the present disclosure, the control device 70 also includes a power-off execution unit 704, which is used to, when determining the energy-saving time periods corresponding to the multiple radio frequency remote units, perform a power-off operation on a single radio frequency remote unit among the multiple radio frequency remote units within at least one energy-saving time period corresponding to the single radio frequency remote unit.

In the embodiment of the present disclosure, the power-off execution unit 704 is also used to power off any RF remote unit in the indoor cell within the energy-saving time period of the RF remote unit when the detection result of the terminal meets the requirements of the preset energy-saving level within the energy-saving time period of the RF remote unit.

In the disclosed embodiment, the energy-saving level is used to indicate that the remote radio unit cannot detect a terminal in the energy-saving period. Or, the energy-saving level is used to indicate that there is no terminal in the energy-saving period with the remote radio unit as the remote radio unit with the strongest channel quality. Or, the energy-saving level is used to indicate that during the energy-saving period, all terminals detected by the remote radio unit are within the effective coverage range of the remote radio unit outside the preset energy-saving range.

In the embodiment of the present disclosure, the control device 70 further includes a power-on execution unit 705, which is used to obtain the cell-level load of the indoor cell in real time. When the cell-level load is greater than or equal to the first preset threshold, a power-on operation is performed on all the radio remote units in the indoor cell that are in a power-off state.

In the embodiment of the present disclosure, the power-on execution unit 705 is further used to obtain in real time the number of terminals connected to the non-powered-off RF remote units in the indoor cell. When the number of terminals connected to the non-powered-off RF remote units is greater than or equal to the second preset threshold, a power-on operation is performed on the RF remote units that are adjacent to the non-powered-off RF remote units and are in a powered-off state.

In the disclosed embodiment, the power-on execution unit 705 is also used to obtain in real time the number of weak coverage terminals corresponding to the radio remote units that are not powered off in the indoor cell. When the number of weak coverage terminals corresponding to the radio remote units that are not powered off is greater than or equal to the third preset threshold, the radio remote units that are adjacent to the radio remote units that are not powered off and are in a powered off state are powered on. The weak coverage terminal is a terminal whose channel quality is less than or equal to the fourth preset threshold.

In the embodiment of the present disclosure, the power-on execution unit 705 is also used to perform a power-on operation on all radio remote units in the indoor cell that are in a power-off state when the number of terminals detected by the key radio remote units preset in the indoor cell within a fourth preset time period is greater than or equal to a fifth preset threshold.

In the disclosed embodiment, the power-on execution unit 705 is further used to predict the movement trajectory of the target terminal according to the transfer probability of the target terminal between different RF remote units in the indoor cell, and to perform a power-on operation on the RF remote units in the indoor cell that are on the movement trajectory of the target terminal and are in a powered-off state.

In an embodiment of the present disclosure, among the terminals belonging to any radio frequency remote unit, if the ratio of the number of terminals that detect the signal of the first radio frequency remote unit in the indoor cell to the number of terminals belonging to any radio frequency remote unit within a preset time range is greater than or equal to a sixth preset threshold, the radio frequency remote units adjacent to any radio frequency remote unit include the first radio frequency remote unit.

In the embodiment of the present disclosure, any remote radio unit with the strongest channel quality of any terminal is switched to a first remote radio unit, and the remote radio units adjacent to any remote radio unit include the first remote radio unit.

In the embodiment of the present disclosure, the control device 70 further includes a trajectory determination unit 706, which is used to determine the motion event of the target terminal. The motion event is used to indicate the radio remote units experienced by any terminal in a time sequence during a call. According to the motion event of any terminal in the indoor cell, at least one n-order transition probability of any terminal moving from any RF remote unit to other RF remote units in energy-saving state is determined. According to the at least one n-order transition probability from any RF remote unit to other RF remote units in energy-saving state, the sum of at least one n-order transition probability from any terminal in any RF remote unit to other RF remote units in energy-saving state is determined, where n is an integer greater than or equal to 1. In response to the sum of at least one n-order transition probability of any terminal in any RF remote unit being greater than or equal to a seventh preset threshold, the motion trajectory corresponding to at least one n-order transition probability of any terminal in any RF remote unit is determined as the motion trajectory of any terminal.

In the disclosed embodiment, at least one n-th order transition between any remote RF unit and other remote RF units in energy-saving state refers to the probability that any terminal moves from any remote RF unit to other remote RF units in energy-saving state through n steps.

The control device 70 shown in FIG. 7 further includes a bus 707 , and the bus 707 is used to connect the above-mentioned multiple virtual units.

In the case of implementing the functions of the above-mentioned integrated modules in the form of hardware, the embodiment of the present disclosure provides another possible structure of the control device involved in the above-mentioned embodiment. As shown in Figure 8, the control device 80 includes: a memory 801, a processor 802 and a bus 804. In some embodiments, the control device 80 may also include a communication interface 803.

The memory 801 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

The processor 802 may be a processor that implements or executes various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 802 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The processor 802 may be a processor that implements or executes various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 802 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

The communication interface 803 is used to connect with other devices through a communication network. The communication network can be Ethernet, wireless access network, wireless local area network (Wireless Local Area Networks, WLAN), etc.

As an example, the memory 801 can exist independently of the processor 802, and the memory 801 can be connected to the processor 802 via the bus 804 to store instructions or program codes. When the processor 802 calls and executes the instructions or program codes stored in the memory 801, the control method of the indoor distribution system provided in the embodiment of the present disclosure can be implemented.

As another example, the memory 801 may also be integrated with the processor 802 .

The bus 804 may be an Extended Industry Standard Architecture (EISA) bus, etc. The bus 804 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, FIG8 only uses one thick line, but does not mean that there is only one bus or one type of bus.

Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) having computer program instructions stored therein. When the computer program instructions are executed on a computer, the computer executes a method for controlling an indoor distribution system as in any of the above-mentioned embodiments.

Exemplarily, the computer-readable storage medium may include, but is not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the embodiments of the present disclosure may represent one or more devices for storing information. And/or other machine-readable storage media. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instruction(s) and/or data.

The embodiment of the present disclosure provides a computer program product including instructions. When the computer program product is run on a computer, the computer is enabled to execute the control method of the indoor distribution system of any one of the above embodiments.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims (18)

1. A control method for an indoor distribution system, comprising:

   Collecting measurement data samples corresponding to a plurality of terminals in the indoor sub-cell, wherein the measurement data sample corresponding to each terminal includes at least one of measurement time information, radio remote unit information capable of detecting the terminal, and channel quality information of the terminal detected by the radio remote unit;

   The energy-saving time periods corresponding to the multiple radio remote units in the indoor cell are determined according to the measurement data samples corresponding to the multiple terminals respectively, and the energy-saving time period corresponding to each radio remote unit is used to perform a power-off operation on the radio remote unit.
2. The method according to claim 1, wherein, before collecting the measurement data samples respectively corresponding to the multiple terminals, the method further comprises:

   The energy-saving time period range of the indoor cell is determined according to the cell-level load index within a preset time period.
3. The method according to claim 2, wherein determining the energy-saving time periods corresponding to the multiple radio remote units in the indoor cell respectively according to the measurement data samples corresponding to the multiple terminals respectively comprises:

   Determine, according to the measurement data samples respectively corresponding to the multiple terminals in the preset time period, energy-saving radio remote units respectively corresponding to the multiple energy-saving time periods within the energy-saving time period range of the indoor cell;

   According to the energy-saving radio remote units corresponding to the multiple energy-saving time periods within the energy-saving time period of the indoor cell, the energy-saving time periods respectively corresponding to the multiple radio remote units are determined.
4. The method according to claim 3, wherein the determining, according to the measurement data samples respectively corresponding to the multiple terminals in the preset time period, the energy-saving radio remote units respectively corresponding to the multiple energy-saving time periods within the energy-saving time period of the indoor cell comprises:

   Determining a first set of radio remote units out of a preset energy saving range among the plurality of radio remote units;

   Determine, according to the measurement data samples respectively corresponding to the multiple terminals, a set of second remote radio frequency units outside the preset energy-saving range in each energy-saving time period, wherein, for the second remote radio frequency units corresponding to each energy-saving time period, the second remote radio frequency unit set includes a remote radio frequency unit of at least one user measured in the same period of the energy-saving time period, or a remote radio frequency unit with the strongest channel quality measured in the same period of the history for any terminal, or a minimum remote radio frequency unit set that meets the coverage requirement and is determined according to the measurement data samples in the same period of the history according to a preset algorithm rule;

   According to the first set of radio remote units and the second set of radio remote units outside the preset energy-saving range in each energy-saving time period, the energy-saving radio remote units corresponding to each energy-saving time period in the energy-saving time period of the indoor cell are determined.
5. The method according to claim 4, wherein the preset algorithm rule includes at least one of a greedy algorithm, an ant colony algorithm, a genetic algorithm or a particle swarm algorithm.
6. The method according to any one of claims 1 to 5, further comprising:

   When energy-saving time periods respectively corresponding to the multiple remote radio frequency units are determined, a power-off operation is performed on a single remote radio frequency unit among the multiple remote radio frequency units within at least one energy-saving time period corresponding to the single remote radio frequency unit.
7. The method according to claim 1, further comprising:

   For any radio remote unit in the indoor cell, when the detection result of the terminal meets the requirement of the preset energy-saving level within the energy-saving time period of the radio remote unit, the radio remote unit is powered off within the energy-saving time period of the radio remote unit.
8. The method according to claim 7, wherein the energy-saving level is used to indicate that the radio remote unit cannot detect the terminal within the energy-saving time period;

   Or, the energy saving level is used to indicate that there is no terminal in the energy saving time period with the radio remote unit as the channel with the strongest quality. The radio remote unit;

   Alternatively, the energy saving level is used to indicate the energy saving time period, and all terminals detected by the radio remote unit are within the effective coverage range of the radio remote unit outside the preset energy saving range.
9. The method according to claim 1, further comprising:

   Acquire the cell-level load of the indoor cell in real time;

   In a case where the cell-level load is greater than or equal to a first preset threshold, a power-on operation is performed on all radio remote units in the indoor cell that are in a power-off state.
10. The method according to claim 1, further comprising:

    Real-time acquisition of the number of terminals connected to the radio remote units that are not powered off in the indoor cell;

    When the number of terminals connected to the non-powered-off radio remote unit is greater than or equal to a second preset threshold, a power-on operation is performed on a radio remote unit that is adjacent to the non-powered-off radio remote unit and is in a powered-off state.
11. The method according to claim 2, further comprising:

    Acquire in real time the number of weak coverage terminals corresponding to the radio remote units that are not powered off in the indoor cell;

    When the number of weak coverage terminals corresponding to the radio remote unit that is not powered off is greater than or equal to a third preset threshold, powering on the radio remote unit that is adjacent to the radio remote unit that is not powered off and is in a powered off state;

    The weak coverage terminal is a terminal whose channel quality is less than or equal to a fourth preset threshold.
12. The method according to claim 10 or 11, wherein

    Among the terminals belonging to any radio frequency remote unit, if the ratio of the number of terminals that detect the signal of the first radio frequency remote unit in the indoor cell to the number of terminals belonging to any radio frequency remote unit within a preset time range is greater than or equal to a sixth preset threshold, the radio frequency remote units adjacent to any radio frequency remote unit include the first radio frequency remote unit.
13. The method according to claim 10 or 11, wherein

    Any of the radio remote units with the strongest channel quality of any terminal is switched to a first radio remote unit, wherein the radio remote unit adjacent to any of the radio remote units includes the first radio remote unit.
14. The method according to claim 1, further comprising:

    When the number of terminals detected by the key remote radio frequency unit preset in the indoor cell within a fourth preset time period is greater than or equal to a fifth preset threshold, a power-on operation is performed on all remote radio frequency units in the indoor cell that are in a power-off state.
15. The method according to claim 1, further comprising:

    Predicting the movement trajectory of the target terminal according to the transfer probability of the target terminal between different radio remote units in the indoor cell;

    A power-on operation is performed on a radio remote unit that is on a moving track of the target terminal and is in a power-off state within the indoor cell.
16. The method according to claim 13, wherein predicting the movement trajectory of any terminal according to the transfer probability of any terminal between different radio remote units in the indoor cell comprises:

    Determining a motion event of the target terminal, the motion event being used to indicate radio remote units experienced by any terminal in a time sequence during a call;

    Determine, according to the movement event of any terminal, at least one n-th order transition probability that any terminal moves from any remote radio unit of the indoor cell to other remote radio units in energy-saving state;

    Determining the sum of at least one n-order transition probability of any terminal between any one remote radio unit and the other remote radio units in the energy-saving state according to at least one n-order transition probability between any one remote radio unit and the other remote radio units in the energy-saving state, where n is an integer greater than or equal to 1;

    In response to the sum of at least one n-th order transition probability of any terminal in any radio remote unit being greater than or equal to a seventh preset threshold, determining that the motion trajectory corresponding to at least one n-th order transition probability of any terminal in any radio remote unit is the motion trajectory of any terminal in any radio remote unit. a movement trajectory of a terminal;

    The at least one n-th order transition probability between any one of the remote radio units and the other remote radio units in the energy-saving state refers to the probability that any one of the terminals moves from any one of the remote radio units to any one of the other remote radio units in the energy-saving state through n steps.
17. A control device comprises: a memory and a processor, wherein the memory and the processor are coupled, the memory is used to store computer program code, the computer program code includes computer instructions, the processor is used to receive data and send data, and the processor runs the computer instructions so that the control device executes the method according to any one of claims 1 to 16.
18. A computer-readable storage medium comprises computer instructions, wherein the computer instructions are executed on an electronic device so that the electronic device executes the method according to any one of claims 1 to 16.