CN117956554A

CN117956554A - Control method and device of indoor distribution system

Info

Publication number: CN117956554A
Application number: CN202211349513.4A
Authority: CN
Inventors: 王绍江; 柯雅珠; 张波
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2024-04-30
Also published as: WO2024093705A1

Abstract

The application provides a control method and a control device of an indoor distribution system, relates to the technical field of communication, and is used for improving the energy-saving efficiency of a remote radio unit in the indoor distribution system. The method comprises the following steps: and acquiring measurement data samples corresponding to a plurality of terminals in the indoor partition cell, wherein the measurement data samples corresponding to each terminal comprise at least one of measurement time information, remote radio unit information capable of detecting the terminal and channel quality information of the terminal detected by the remote radio unit. And determining energy-saving time periods corresponding to the remote radio units in the cell according to the measurement data samples corresponding to the terminals, wherein the energy-saving time periods corresponding to the remote radio units are used for executing power-down operation on the remote radio units.

Description

Control method and device of indoor distribution system

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling an indoor distribution system.

Background

The indoor distribution system utilizes the related technical means to uniformly distribute signals of the mobile communication base stations at each indoor corner, thereby ensuring that an indoor area has better signal coverage and improving the quality of mobile communication in a building. An existing indoor distribution system typically includes tens to hundreds of miniature remote radio units (Pico Remote Radio Unit, pRRU) under one base station. However, since each pRRU covers only a small area in the room, there often occurs a situation that no terminal exists in the area covered by pRRU, and at this time, the redundant pRRU can generate very large energy consumption when it is started up for a long time.

In order to maximally save energy consumption, pRRU of the terminal-free area can be turned off in a mode of manually setting timing power-down under the condition of guaranteeing terminal experience. Or to select pRRU to shut down in areas covered by pRRU where no terminals are present based on a single measurement. However, the shutdown and recovery of pRRU are relatively long-time processes, and the terminal distribution period is not stable enough, so that the current scheme cannot accurately judge the pRRU which can be shut down stably, and the pRRU in the terminal area is frequently shut down in error. Meanwhile, when the terminal is detected in the face of moving in the room, generally through pRRU, the adjacent pRRU of pRRU in the current terminal area is awakened. However, since each pRRU covers a small range, adding to the shutdown and restoration of pRRU is a relatively long process, and thus may not meet the needs of the indoor mobile terminal.

Disclosure of Invention

The embodiment of the application provides a control method and a control device for an indoor distribution system, which are used for improving the energy-saving efficiency of a remote radio unit in the indoor distribution system.

In one aspect, a control method of an indoor distribution system is provided, including: and acquiring measurement data samples corresponding to a plurality of terminals in the indoor partition cell, wherein the measurement data samples corresponding to each terminal comprise at least one of measurement time information, remote radio unit information capable of detecting the terminal and channel quality information of the terminal detected by the remote radio unit. And determining energy-saving time periods corresponding to the remote radio units in the cell according to the measurement data samples corresponding to the terminals, wherein the energy-saving time periods corresponding to the remote radio units are used for executing power-down operation on the remote radio units.

In another aspect, a control apparatus includes: the system comprises a sample acquisition unit, a detection unit and a detection unit, wherein the sample acquisition unit is used for acquiring measurement data samples corresponding to a plurality of terminals in a cell of a room, wherein the measurement data samples corresponding to each terminal comprise at least one of measurement time information, remote radio unit information capable of detecting the terminal and channel quality information of the terminal detected by the remote radio unit.

The time determining unit is used for determining energy-saving time periods respectively corresponding to the remote radio units in the cell according to the measurement data samples respectively corresponding to the terminals, and the energy-saving time periods corresponding to the remote radio units are used for executing power-down operation on the remote radio units.

In yet another aspect, there is provided a communication node comprising: a memory and a processor; the memory is coupled to the processor; the memory is used for storing a computer program; the processor executes the computer program to implement the method for controlling the indoor distribution system according to any one of the embodiments.

In yet another aspect, a computer readable storage medium is provided, on which computer program instructions are stored, which when executed by a processor, implement a method for controlling an indoor distribution system according to any one of the above embodiments.

In yet another aspect, a computer program product is provided, which comprises computer program instructions which, when executed by a processor, implement the method of controlling an indoor distribution system according to any of the embodiments described above.

According to the embodiment of the application, the energy-saving time period of each remote radio unit in the indoor distribution system is determined by collecting the measurement data sample of the terminal for a long time, and the power-down operation is performed on pRRU in the coverage area without the terminal, so that the energy consumption is effectively saved.

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings that are required to be used in some embodiments of the present application will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present application, and other drawings may be obtained according to these drawings to those of ordinary skill in the art.

FIG. 1 is a schematic diagram of an indoor distribution system according to some embodiments of the present application;

FIG. 2 is a block diagram of an indoor distribution system device according to some embodiments of the present application;

FIG. 3 is a flowchart illustrating a control method of an indoor distribution system according to some embodiments of the present application;

FIG. 4 is a flow chart of a greedy algorithm find minimum pRRU set according to some embodiments of the present application;

FIG. 5 is a graph illustrating an n-order transition probability between indoor distribution systems pRRU according to some embodiments of the present application;

Fig. 6 is a schematic flow chart of finding a minimum pRRU set of an ant colony algorithm according to some embodiments of the present application;

fig. 7 is a schematic structural diagram of a control device according to some embodiments of the present application;

fig. 8 is a schematic structural diagram of a control device according to some embodiments of the present application.

Detailed Description

The following description of the embodiments of the present application will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the present application, the words "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

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

In the description of the present application, "/" means "or" unless otherwise indicated, for example, A/B may mean A or B. "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. Furthermore, "at least one" means one or more, and "a plurality" means two or more.

Fig. 1 is a schematic diagram of an indoor distribution system according to the present application. The system architecture diagram comprises: a baseband processing unit (Building Base band Unit, BBU) and a plurality of pRRU. A plurality pRRU may form a Cell partition (Cell) within an indoor distribution system.

Wherein each pRRU would cover a smaller portion of the room. Typically, each pRRU may provide signals to terminals within the area covered by pRRU. When no terminal exists in the area covered by pRRU for a certain stable period, power-down operation can be performed on pRRU in order to save energy consumption. And, when a terminal is about to occur in an area covered by the power-down state pRRU, it is necessary to perform a power-up operation on the adjacent pRRU in the area in advance.

In the existing scheme, a mode of manually setting timing power-down is often adopted, or power-down operation is performed based on the current measurement result, that is, if no terminal is detected in the area covered by pRRU, power-down operation can be performed on pRRU. However, the power down and power up process of pRRU requires a relatively long time. According to the current scheme, pRRU needing power-down is selected only based on single measurement data, and pRRU capable of stably powering down in a period of time cannot be controlled, so that the possibility of mistakenly powering down exists, terminal experience is affected, and energy loss is caused. Meanwhile, when the terminal is in a motion state, the power-on operation is performed in advance only on the adjacent pRRU in the power-down state pRRU area, which may not meet the requirements of the motion terminal.

The above-described moving terminal may be understood as a terminal in a moving state.

In view of this, the present application provides a control method and apparatus for an indoor distribution system, where by integrating historical long-term data, pRRU of power-down operations that can be executed in an area where no terminal covers in a period of relatively stable time are found, so as to avoid affecting terminal experience. In addition, in the same time period, when a plurality of pRRU cover the same terminal at the same time, the application can find out the set which can cover the least pRRU needed by the current terminal in each time period, and execute power-down operation on the redundant pRRU, thereby playing the role of saving energy consumption. Meanwhile, the application can execute the power-on operation on pRRU of the motion terminal on a possible motion route in advance, and can better meet the requirement of the motion terminal.

Fig. 2 is a structural diagram of an indoor distribution system device provided by the application, which mainly comprises a big data processing unit and a base station, and comprises the following modules: the system comprises a real-time data acquisition module 201, a long-term data storage module 202, a power-down period learning module 203, a pRRU adjacent relation learning module 204, a pRRU inter-transfer model learning module 205 and a pRRU power-down control module 206. Wherein,

The real-time data acquisition module 201 is configured to acquire, in real time, a measurement data sample of the terminal detected by pRRU, where the measurement data sample includes at least measured time information, measured pRRU information covering the same terminal, and detected channel quality information of the same terminal detected by each pRRU. The detected channel quality information may be understood as the received power of a Sounding reference signal (Sounding REFERENCE SIGNAL, SRS) of the terminal received by pRRU.

A long term data storage module 202 for storing measurement data samples over a longer period of time.

The power-down period learning module 203 is configured to determine, according to the measurement data samples stored in the long-term data storage module 202, a set that can cover a minimum pRRU required by the current terminal in each period, that is, determine pRRU that is available for power-down in different periods, and determine a power-down period of each pRRU.

PRRU an adjacency learning module 204 for determining adjacency between each pRRU from the measured data samples stored by the long-term data storage module 202.

And the inter-pRRU migration model learning module 205 is configured to learn a migration model between each pRRU under the indoor distribution system according to the measurement data samples stored by the long-term data storage module 202, and obtain an n-order transition probability between each pRRU. When pRRU in the power-on state detects a motion terminal, the pRRU can predict the motion route of the current motion terminal in advance, and if the n-order transition probability between the pRRU motion terminal and other pRRU motion routes exceeds a preset threshold, the n-order transition probability indicates that power-on operation needs to be performed on the other pRRU motion routes, so that the terminal experience of the motion terminal is ensured.

PRRU a power-down control module 206 for performing a power-down operation on the power-down enabled pRRU according to a different power-down gear if the currently power-down enabled pRRU has no terminal coverage according to each pRRU power-down enabled time period determined by the power-down time period learning module 203. Meanwhile, the number of terminals which are not covered by the power-down pRRU and the number of weak covered terminals are detected, and power-up operation is performed on pRRU on a motion route of the current motion terminal which is predicted by the inter-pRRU migration model learning module 205. The weak coverage herein may be understood as a poor detection of channel quality information by one or more pRRU of the detection channel quality information of the same terminal detected by a plurality pRRU at the same time.

Based on the above-described structural diagram provided by the present application, an embodiment of the present application will be described below with a control apparatus as an execution subject. The control device may comprise, for example, the indoor distribution system arrangement described above.

The application provides a control method of an indoor distribution system, as shown in fig. 3, comprising the following steps:

301. The control equipment collects measurement data samples corresponding to a plurality of terminals in a cell, wherein the measurement data samples corresponding to each terminal comprise at least one of measurement time information, remote radio unit information 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 application can be understood as the big data processing unit in fig. 1.

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

It will be appreciated that the measurement data samples herein may be measurement data samples collected by the real-time data acquisition module 201 of fig. 2. The specific acquisition procedure for the measurement data samples is as follows.

301A, determining the energy-saving time period range of the indoor sub-cell according to the cell level load index in the preset time period.

The cell-level load index here can be understood as the number of terminals within the cell and the physical resource module (Physical Resource Block, PRB) utilization. When the number of terminals and the PRB utilization rate in the indoor partition cell are lower than the preset threshold in a certain period of time, the certain period of time can be understood as an energy-saving time period range of the indoor partition cell, namely, the indoor distribution system in the current energy-saving time period range is in a low-load state. For example, based on the historical contemporaneous data, if the number of terminals and the PRB utilization in the indoor cell are always lower than the preset threshold within a certain period of time, the certain period of time is the energy-saving time period range of the indoor cell. The historical contemporaneous data herein may be understood as a sample of measured data of the terminal detected pRRU for the same period of time within M days preceding the current time.

301B, according to measurement data samples respectively corresponding to a plurality of terminals in a preset time period, determining energy-saving remote radio units respectively corresponding to a plurality of energy-saving time periods in the energy-saving time period range of the indoor cell.

For example, pRRU corresponding to each energy-saving available period in the cell may be determined based on terminal measurement data samples detected by the real-time data acquisition module 201 at pRRU of the energy-saving available periods in the cell. The specific implementation steps are as follows:

301b1, determining a first remote radio unit set outside a preset energy saving range in a plurality of remote radio units.

The preset power saving range may be understood as a set of pRRU that can perform the power-down operation. If a pRRU is not within the preset power saving range, the pRRU belongs to the first remote unit set.

In some embodiments, the first remote radio unit set may be understood as pRRU that is manually set and does not need to perform a power-down operation. It may also be understood that when the terminal migrates between different pRRU cells, the probability of migration in the border area pRRU of the cell always exceeds the preset threshold, so that the pRRU does not perform the power-down operation in order to ensure that the area covered by the cell remains unchanged, and the pRRU may be used as one remote unit in the first remote unit set. It will be appreciated that pRRU in the first remote unit set need not perform the power down operation, pRRU, which must be reserved for indoor cells.

301B2, determining a second remote radio unit set outside a preset energy-saving range in each energy-saving time period according to measurement data samples corresponding to a plurality of terminals, wherein for the second remote radio units corresponding to each energy-saving time period, the second remote radio unit set comprises remote radio units which can synchronously measure at least one user in a history of the energy-saving time period, or remote radio units which can synchronously measure the strongest channel quality of any terminal in the history, or a minimum remote radio unit set which meets the coverage requirement and is determined according to the measurement data samples in the history and the preset algorithm rule.

For example, in the first case, based on historical contemporaneous data, all pRRU of the area within the cell covered with the terminal constitute a second set of remote units. Or in the second case, based on the historical contemporaneous data, all pRRU with the strongest channel detection quality in the area covered with the terminal form a second remote radio unit set. Or in the third case, based on the historical contemporaneous data, pRRU with the least number needed in the area covered with the terminal is determined according to the preset algorithm rule to form a second remote radio unit set, namely a minimum pRRU set.

It will be appreciated that when the second set of remote units is the first case, i.e. includes all pRRU of the area covered by the terminal, then the number of cells pRRU that are powered on during the power-up capable period is the greatest, i.e. the power-up level of the cells is the lowest at this time, but the quality of channel detection by the terminal is broad within the pRRU coverage area. When the second remote radio unit set is the second case, that is, includes all pRRU with the strongest channel detection quality, the energy saving level of the indoor cell is better than that of the remote radio unit set in the first case, and the channel detection quality of the terminal in the pRRU coverage area is more balanced. When the second set of remote units is the third case, that is, includes pRRU which is the minimum required number when the area where the terminal is located is completely covered, the energy saving level of the indoor cell is better than the energy saving level of the set of remote units in the first case and the second case, but the channel detection quality of the terminal in the pRRU coverage area is the weakest. It is appreciated that the second set of remote units is determined based on the distribution characteristics of the terminals for each time period.

It should be appreciated that the collection of historical contemporaneous data is performed when all pRRU have not entered the off state.

301B3, determining the energy-saving remote radio units corresponding to each energy-saving time period respectively in the energy-saving time period range 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.

And in the energy-saving time period range of the indoor subarea, the pRRU outside the second remote radio unit set which does not need energy saving in the first remote radio unit set and each energy-saving time period is pRRU which can execute power-down operation in the energy-saving time period of the indoor subarea, and the energy-saving remote radio unit can be obtained.

In some embodiments, the preset algorithm rule may include at least one of greedy algorithm, ant colony algorithm, genetic algorithm or particle swarm algorithm, but may also be other algorithms, which is not limited by the present application. Next, each measurement data sample is taken as an example of determining the minimum pRRU set according to a greedy algorithm by using all pRRU on the base station side at a certain moment to measure the channel quality information of a certain terminal, and fig. 4 is a flow chart of finding the minimum pRRU set according to the greedy algorithm according to an embodiment of the present application.

301B21, collecting a measurement data sample of historical simultaneous data.

301B22, extracting pRRU which can effectively cover the rest measurement data samples according to all measurement data samples acquired by the base station, and putting the extracted pRRU into a minimum reserved pRRU set.

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

301B23, removing covered data measurement 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 contained in pRRU2 are removed.

301B242, determining if all data measurement samples are covered, if so, re-executing 321b22 until a yes condition is met to determine pRRU, i.e. the minimum pRRU set, that can be reserved for covering all measurement data samples.

For example, from the remaining 805 data measurement samples, one again looks for some measurement data sample that effectively overlaps some pRRU of the other data measurement sample, and places the found pRRU into the minimum reservation pRRU set. After multiple iterations, the pRRU reserved for all measurement data samples can be covered as pRRU in the smallest pRRU set.

It is to be appreciated that steps 301 b.2.1-301 b.2.2 are repeated, pRRU may be selected randomly, rather than fixedly, pRRU, which is capable of covering the most of the remaining terminal measurement data samples.

The greedy algorithm, the ant colony algorithm, the genetic algorithm, the particle swarm algorithm and the like find the minimum pRRU set, so that a local optimal solution can be found. The greedy algorithm is relatively simpler to realize when searching for the minimum pRRU set, and the calculated amount is smaller. But when searching for the smallest pRRU set using ant colony algorithm, genetic algorithm, particle swarm algorithm, etc., more accurate results may be obtained if the number of iterations is increased, i.e. the number of pRRU in the smallest pRRU set found may be smaller.

301C, a pRRU set which is determined based on different time periods and needs to be reserved is obtained to obtain a pRRU set which can save energy in different time periods.

It is understood that other pRRU than the smallest pRRU sets within the energy-efficient time period range of the cell partition constitute pRRU sets that are energy-efficient within different time periods.

302. And determining energy-saving time periods corresponding to the remote radio units in the cell according to the measurement data samples corresponding to the terminals, wherein the energy-saving time periods corresponding to the remote radio units are used for executing power-down operation on the remote radio units.

It can be understood that the energy-saving time periods respectively corresponding to the plurality of remote radio units are the energy-saving time periods of each pRRU determined by the power-down time period learning module 203 in fig. 2. The power-down operation performed on the remote units for the power-down period corresponding to each remote unit may be understood as the power-down operation performed on the power-down pRRU by the pRRU power-down control module 206 in fig. 2.

302A, under the condition that energy-saving time periods corresponding to a plurality of remote radio units respectively are determined, for a single remote radio unit in the plurality of remote radio units, power-down 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, if the energy saving possible time periods corresponding to pRRU are T1, T2, and T3, then the power-down operation can be performed on pRRU1 during the time period of T1, T2, or T3. Where T1, T2 or T3 can be understood as a discrete time period of pRRU a 1.

302B, for any remote radio unit in the indoor cell, under the condition that the detection result of the terminal in the energy-saving time period of the remote radio unit meets the requirement of a preset energy-saving gear, powering down the remote radio unit in the energy-saving time period of the remote radio unit.

And when the number of the terminals in the energy-saving time period corresponding to a certain pRRU meets the energy-saving gear requirement, executing power-down operation on the pRRU. In some embodiments, the specific energy saving gear requirements are mainly three cases:

energy saving gear 1: the energy-saving gear is used for indicating that the remote radio unit cannot detect the terminal in the energy-saving time period.

A power-down operation is performed on pRRU when there is no terminal in the area covered by pRRU in the energy-saving available period.

Energy saving gear 2: the energy-saving gear is used for indicating that the terminal does not exist in the energy-saving time period, and the terminal takes the remote radio unit as the remote radio unit with the strongest channel quality.

When there is a terminal in the area covered by pRRU in the energy saving available period, and there are other pRRU in the area, if the pRRU detects that the channel detection quality of the terminal is not the strongest channel quality for the terminal in the area, a power-down operation can be performed on the pRRU.

For example, the coverage area of pRRU a and the coverage area of pRRU a overlap, and a plurality of terminals exist in the coverage area of pRRU a, and pRRU a channel detection quality of the detected plurality of terminals is stronger than that of the detected plurality of terminals of pRRU a, then the power-down operation is performed on pRRU a in the energy-saving time period.

Energy-saving gear 3: the energy-saving gear is used for indicating the energy-saving time period, and all terminals detected by the remote radio unit are in the effective coverage range of the remote radio unit outside the preset energy-saving range.

When there are terminals in the area covered by pRRU in the energy-saving available period, all the terminals in the area can be covered by pRRU in the first remote unit set and/or the second remote unit set described in steps 301b 1-301 b2, and then power-down operation is performed on pRRU in the energy-saving available period.

In some embodiments, the control device may also re-perform the power-up operation on the remote radio unit that satisfies the following conditions.

And (c) acquiring cell-level load of the indoor partition cell in real time, and executing power-on operation on all remote radio units in a power-down state in the indoor partition cell under the condition that the cell-level load is larger than or equal to a first preset threshold.

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

And b, acquiring the number of terminals connected with the remote radio units which are not powered down in the indoor cell in real time. And under the condition that the number of terminals connected with the remote radio units which are not powered down is greater than or equal to a second preset threshold, executing power-on operation on the remote radio units which are adjacent to the remote radio units which are not powered down and are in a powered down state.

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

And c, acquiring the quantity of the weak coverage terminals corresponding to the remote radio units which are not powered down in the indoor cell in real time. And under the condition that the number of the weak coverage terminals corresponding to the remote radio units which are not powered down is greater than or equal to a third preset threshold, executing power-on operation on the remote radio units which are adjacent to the remote radio units which are not powered down and are in a powered down state. The weak coverage terminal is a terminal with channel quality smaller than or equal to a fourth preset threshold.

Here, a weak coverage terminal may be understood as one or more pRRU in which the terminal detected in pRRU in the powered-on state during the cell-capable power-saving period detects poor channel quality information. If the number of weak coverage terminals is greater than or equal to the fourth preset threshold, a power-up operation is performed on one or more pRRU with poor detected channel quality information and pRRU adjacent to one or more pRRU with poor detected channel quality information.

And d, under the condition that the number of the terminals detected by the key remote radio units preset in the indoor cells in a fourth preset time period is greater than or equal to a fifth preset threshold, executing power-on operation on all the remote radio units in the indoor cells in a power-down state.

The key remote units herein may be understood as pre-configured designated remote units. Such as pRRU, which are manually deployed in a strategic location, such as a doorway of a building or a PRRU placed at an elevator hoistway. And when pRRU at the key position detects that the number of the terminals is greater than or equal to a fifth preset threshold in a certain time, performing power-on operation on all PRRUs in a power-down state in the indoor partition cell.

And e, predicting the motion trail of the target terminal according to the transition probabilities of the target terminal among different remote radio units in the indoor cell. And executing power-on operation on the remote radio unit which is in a power-down state and is on the motion trail of the target terminal in the indoor cell.

When the target terminal is in a motion state, a possible motion route of the target terminal can be predicted according to the transition probabilities of the target terminal among different pRRU. When a certain pRRU detects a moving object terminal, a power-on operation can be performed on pRRU on a possible moving route of the moving object terminal in advance.

It will be appreciated that conditions b and c apply to terminals that are relatively stationary or slow in movement, and condition e applies to terminals that are in movement.

In some embodiments, acquiring the neighbor pRRU of a pRRU may be accomplished by the following scheme.

Scheme one: and in the terminals belonging to any remote radio units, if the ratio of the number of terminals of signals of the first remote radio unit in the cell to the number of terminals belonging to any remote radio unit is greater than or equal to a sixth preset threshold within a preset time range, wherein the adjacent remote radio units of any remote radio unit comprise the first remote radio unit.

It is assumed that there are one or more terminals within an area of pRRU coverage and that one or more of the one or more terminals are simultaneously covered by another pRRU. The ratio of the number of terminals covered by another pRRU can be calculated, and if this ratio is greater than the sixth preset threshold, then another pRRU is considered to be the adjacent pRRU of a pRRU. For example, if there are 100 terminals in the area covered by pRRU a and 50 terminals out of the 100 terminals are simultaneously covered by pRRU2, the terminal number ratio of pRRU2 is 50/100=0.5. Assuming that the sixth preset threshold is 0.2,0.2>0.5, prru2 is pRRU's neighbor pRRU.

Scheme II: and switching any remote radio unit with the strongest channel quality of any terminal into a first remote radio unit, wherein the remote radio units adjacent to any remote radio unit comprise the first remote radio unit.

When a certain pRRU in a certain area covered with a terminal has strongest channel detection information for a detected certain terminal and a certain terminal moves from a certain pRRU covered area with strongest channel detection information for a certain terminal to another pRRU with strongest channel detection information for a certain terminal, another pRRU is adjacent pRRU of a certain pRRU. For example, pRRU1 in an area covered with a terminal detects that the channel detection information of the terminal is strongest, when the terminal is migrated from pRRU1 to pRRU2, and pRRU is that the channel detection information of the terminal is strongest, pRRU2 is pRRU adjacent to pRRU 1.

In some embodiments, the power-up operation is performed on pRRU on a possible motion route of the motion terminal mainly by the following steps.

Step 1: and determining a motion event of the target terminal, wherein the motion event is used for indicating a remote radio unit which is experienced by any terminal in a time sequence in the process of one call.

In a motion event of a target terminal, pRRU that the target terminal sequentially experiences in time sequence in a call process is pRRU on a possible motion route of the target terminal. pRRU here refers to the strongest pRRU within the area covered with terminals.

In some embodiments, the call procedure herein may be understood as establishing a radio resource control (Radio Resource Control, RRC) request-RRC request duration phase-RRC release duration phase. During this pass, pRRU% of the measurement sample data of the target terminal is detected to be strongest in the area covered with the terminal. For example, in one RRC request, the strongest pRRU of the measurement sample data of the target terminal is detected in the coverage area of the target terminal in the RRC release duration phase, and pRRU1, pRRU2 and pRRU3 are sequentially located in the area where the target terminal moves in this RRC request, and the area where the target terminal moves sequentially passes through pRRU1 with the strongest channel detection quality, pRRU2 with the strongest channel detection quality and pRRU3 with the strongest channel detection quality, that is, the terminal moves between pRRU1, pRRU2 and pRRU, and the occurred transition can be understood as the movement event of the target terminal. It will be appreciated that if the strongest pRRU of the measurement sample data of the target terminal is detected within a certain terminal coverage area during the RRC release duration phase is pRRU at all times, it is indicated that the target terminal is not moving.

Step 2: and determining at least one n-order transition probability of any terminal between any remote radio unit of the indoor cell and other remote radio units in an energy-saving state according to the motion event of any terminal.

That is, the transition probability of a terminal moving from a certain pRRU to other pRRU in a power saving state may be counted based on the movement event of the terminal.

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

The n-order transition probability is understood to mean at least one n-order transition from any remote radio unit to the rest of remote radio units in an energy-saving state, and the probability that any terminal moves from any remote radio unit to any rest of remote radio units in an energy-saving state through n steps. I.e. the probability of a terminal in a pRRU coverage area transitioning to another pRRU through n steps. Wherein the probability of each step transition is independent, i.e. the markov chain condition is met. Each n-order transition probability calculation formula here is as follows:

Wherein,

The probability of transitioning from pRRU to pRRUn over N steps, n=1, 2.

The probability of a direct one-step transition from pRRUn-1 to pRRUn is represented.

S denotes a set of transition states, here the set of all pRRU in the cell.

The sum of the n-th order transition probabilities of one or more other pRRU of a terminal moving from one pRRU to a power saving state may then be counted.

Step 4: and determining a motion track corresponding to the at least one n-order transition probability of any terminal in any remote radio unit as the motion track of any terminal in response to the fact that the sum of the at least one n-order transition probability of any terminal in any remote radio unit is larger than or equal to a seventh preset threshold.

When a terminal is detected in a pRRU, if the sum of n-order transition probabilities of the terminal moving to one or more other terminals pRRU is greater than or equal to a seventh preset threshold, pRRU that is undergone by a certain terminal moving from a certain pRRU terminal to one or more other terminals pRRU can be understood as a motion track of the certain terminal.

For example, as shown in fig. 5, assuming n=3, the seventh pre-threshold is 0.2, when pRRU detects a terminal, it can be derived that:

Probability of terminal movement to pRRU: order 1 transition probability 0.5

Probability of terminal movement to pRRU 4: 1 st order transition probability 0.3

Probability of terminal movement to pRRU: order 2 transition probabilities 0.5 x 0.5=0.25

Probability of terminal movement to pRRU: the probability of transition from pRRU0 to pRRU5 is 0.29+0.2=0.49, with a transition probability of 0.5×0.4+0.3×0.3= 0.29,3.

Because the probability of the terminal moving to pRRU, the probability of the terminal moving to pRRU4, the probability of the terminal moving to pRRU2, and the probability of the terminal moving to pRRU are all greater than the seventh pre-threshold 0.2, pRRU1, pRRU2, pRRU3, pRRU, and pRRU5 are all pRRU on the possible motion trajectories of the terminal when pRRU0 detects the terminal, pRRU on the motion trajectories all perform power-up.

In some examples, embodiments of the present application may also be implemented by the following several schemes. For example: the application obtains pRRU in the coverage area of the terminal by detecting the measurement data samples of the terminal through different pRRU in the indoor cells, and can replace the detection of pRRU in the coverage area of the terminal by monitoring equipment such as a camera.

The energy-saving time period of pRRU can be determined based on the historical contemporaneous data, and can be realized by a manual identification mode, wherein the manual identification mode can be understood as the in-situ investigation of staff.

The present application obtains the neighboring pRRU of a certain pRRU through the first and second schemes and determines pRRU on the possible movement route of the movement terminal through the steps 1-4, instead of obtaining other pRRU of the neighboring geographic location through the network engineering information of a certain pRRU. For example, pRRU information on the moving line is acquired by the walk information of the indoor elevator and confirmed by a manual recognition method.

In the device aspect of the application, a big data processing unit is not required to store and process the historical data, and the historical data can be integrated into the BBU.

The following description will describe the searching of the minimum pRRU set by the ant colony algorithm, as shown in fig. 6, which is a schematic flow chart of searching the minimum pRRU set by the ant colony algorithm provided by the embodiment of the application, wherein the pRRU set is RESERVEDSET and the minimum pRRU set is MINRESERVEDSET.

601. Based on all measurement sample data over the same period of time N days prior to history, a pRRU set is extracted that effectively covers the remaining measurement sample data to 0 or more. 602. The ant colony algorithm is initialized and the initial pheromone intensity of each pRRU in the set is calculated pRRU.

The initial pheromone intensity (i) =1/RESERVEDSET of each pRRU in RESERVEDSET total pRRU numbers.

603. The probability that each pRRU is selected is calculated based on the pheromone strength of each pRRU in the pRRU set, and based on the probability that each pRRU is selected, the required pRRU is put into the smallest pRRU set.

604. PRRU placed in the smallest pRRU set is culled in the pRRU set to be selected, and then the probability that the remainder pRRU is selected is recalculated according to the pheromone intensity of the remainder selectable pRRU.

The probability that the residuals pRRU are selected is the sum of the initial pheromone strength (i)/the pheromone strength of the residuals pRRU for each pRRU.

605. Steps 603-604 are repeated until pRRU in the minimum pRRU set can cover all of the measurement sample data.

606. After one round of selection is completed, the pheromone intensities of pRRU in the minimum pRRU set are updated.

Where pheromone intensity=residual pheromone intensity+pheromone increment.

Wherein if pRRU is selected, the pheromone increment of pRRU is equal to pRRU in 1/MINRESERVEDSET, otherwise the pheromone increment of pRRU is 0.

The remaining pheromone intensity of pRRU is equal to the pheromone of the previous round pRRU times (1-pheromone volatilization factor), and the pheromone volatilization factor adopts parameter setting.

607. Steps 603-605 are repeated until the number of pRRU to put into the minimum pRRU set is minimal and all measurement sample data can be covered.

The following describes, with a specific example, the search for the smallest pRRU set by the ant colony algorithm:

Assume that 10 of RESERVEDSET, which effectively cover the remaining measurement sample data by 0 or more, are pRRU, based on all measurement sample data over the same period of time N days before history. The initial pheromone intensity (i) =1/10 of each pRRU in RESERVEDSET.

Selection pRRU in the second wheel RESERVEDSET is made and the desired pRRU is placed MINRESERVEDSET until pRRU in MINRESERVEDSET can cover all measured sample data.

Assuming that the number of pRRU in MINRESERVEDSET after the second round of selection is 5, i.e., pRRU1-pRRU5, the pheromone increment is 1/5=0.2.

Assuming that the volatilization factor is 0.1, the residual pheromone intensity of pRRU to pRRU5 is 0.1 (1-0.1) =0.09, and the updated pheromone intensity after one round of selection of prru1 to pRRU5 is 0.09+0.2=0.29. Other non-selected pRRU pheromones had an intensity of 0.1 x (1-0.1) +0=0.09. Other non-selected pRRU are pRRU to pRRU10.

Multiple selections are then made until the number of pRRU placed MINRESERVEDSET is minimal and all measurement sample data can be covered. The selection process of each round can be understood as selecting pRRU multiple times, and putting the needed pRRU into MINRESERVEDSET.

The initial pheromone intensity of each pRRU in RESERVEDSET at initial selection is 0.1, so the selection probability of each pRRU is equal

In the second selection, the pheromone intensities of pRRU to pRRU5 were 0.29 and the pheromone intensities of pRRU6 to pRRU10 were 0.09. Then, when pRRU required for the first selection is put into MINRESERVEDSET, the sum of the pheromone intensities of the remaining pRRU =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).

Assuming pRRU1 is put into MINRESERVEDSET, at which point MINRESERVEDSET = (pRRU 1), the sum of the pheromone intensities of the remaining pRRU2-pRRU10 = 0.29 x 4+0.09 x 5. Therefore, when the second selection is performed, the probability of pRRU2-pRRU5 being selected is 0.29/(0.29×4+0.09×5), and the probability of pRRU to pRRU10 being selected is 0.09/(0.29×4+0.09×5).

Let pRRU be put into MINRESERVEDSET, where MINRESERVEDSET = (pRRU, pRRU 2), the remainder pRRU being pRRU 2-pRRU 5 and pRRU-pRRU. Then the sum of the pheromone intensities of the remaining pRRU = 0.29 x 4+0.09 x 4. Therefore, when the third selection is performed, the probability of pRRU to pRRU5 being selected is 0.29/(0.29×4+0.09×4), and the probability of pRRU to pRRU10 being selected is 0.09/(0.29×4+0.09×4).

The above process is repeated until the number of pRRU placed MINRESERVEDSET is minimal and all the measurement sample data can be covered, i.e. the minimal pRRU set.

It will be appreciated that the control device, in order to achieve the above-described functions, comprises corresponding hardware structures and/or software modules that perform the respective functions. Those skilled in the art will readily appreciate that the algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the function modules of the control device according to the embodiment of the method, for example, each function module can be divided corresponding to each function, and two or more functions can be integrated in one function module. The integrated modules may be implemented in hardware or software. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The following description will take an example of dividing each function module into corresponding functions.

Fig. 7 is a schematic structural diagram of a control device according to an embodiment of the present application, where the control device 70 may execute the control method of the indoor distribution system according to the above-mentioned method embodiment. As shown in fig. 7, the control device 70 includes:

the sample collection unit 701 is configured to collect measurement data samples corresponding to a plurality of terminals in a cell, where 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 time determining unit 702 is configured to determine, according to measurement data samples respectively corresponding to a plurality of terminals, energy-saving time periods respectively corresponding to a plurality of remote radio units in the cell division cell, where the energy-saving time period corresponding to each remote radio unit is used to perform a power-down operation on the remote radio unit.

In the embodiment of the application, the method further comprises a range determining unit, which is used for determining the energy-saving time range of the indoor division cells according to the cell level load index in the preset time range before the measurement data samples corresponding to the terminals are acquired.

In this embodiment of the present application, the time determining unit 702 is specifically configured to determine, according to measurement data samples corresponding to a plurality of terminals in a preset time period, energy-saving remote radio units corresponding to a plurality of energy-saving time periods in an energy-saving time period range of the indoor cell. And determining the energy-saving time periods respectively corresponding to the plurality of remote radio units according to the energy-saving remote radio units corresponding to the plurality of energy-saving time periods in the energy-saving time periods of the indoor partition cell.

In the embodiment of the present application, the set determining unit 703 is further configured to determine, according to measurement data samples respectively corresponding to a plurality of terminals in a preset time period, energy-saving remote radio units respectively corresponding to a plurality of energy-saving time periods in an energy-saving time period range of the indoor cell, and determine a first remote radio unit set outside the preset energy-saving range in the plurality of remote radio units. And determining a second remote radio unit set outside the preset energy-saving range in each energy-saving time period according to the measurement data samples respectively corresponding to the plurality of terminals, wherein the second remote radio unit set comprises remote radio units which can synchronously measure at least one user in the history of the energy-saving time period, or remote radio units which can synchronously measure the strongest channel quality of any terminal in the history, or a minimum remote radio unit set which meets the coverage requirement and is determined according to the measurement data samples in the history and the preset algorithm rule. And determining the energy-saving remote radio units corresponding to each energy-saving time period respectively in the energy-saving time period range of the indoor cell according to the first remote radio unit set and the second remote radio unit set which is outside the preset energy-saving range in each energy-saving time period.

In the embodiment of the present application, the preset algorithm rule includes 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 application, the power-down execution unit 704 is further configured to, when determining the energy-saving time periods corresponding to the multiple remote radio units, execute, for a single remote radio unit in the multiple remote radio units, a power-down operation on the single remote radio unit in at least one energy-saving time period corresponding to the single remote radio unit.

In the embodiment of the present application, the power-down execution unit 704 is specifically configured to perform, for any remote radio unit in a cell, a power-down operation on the remote radio unit in an energy-saving time period of the remote radio unit when a detection result of the remote radio unit in the energy-saving time period meets a preset requirement of an energy-saving gear.

In the embodiment of the application, the energy-saving gear is used for indicating that the remote radio unit cannot detect the terminal in the energy-saving time period. Or the energy-saving gear is used for indicating that the terminal does not exist in the energy-saving time period, and the terminal takes the remote radio unit as the remote radio unit with the strongest channel quality. Or the energy-saving gear is used for indicating the energy-saving time period, and all terminals detected by the remote radio unit are in the effective coverage range of the remote radio unit outside the preset energy-saving range.

In the embodiment of the present application, the power-on execution unit 705 is further included, and is configured to obtain the cell level negative of the cell division in real time. And under the condition that the cell-level load is greater than or equal to a first preset threshold, performing power-on operation on all remote radio units in a power-down state in the indoor cell.

In the embodiment of the present application, the power-on execution unit 705 is specifically configured to obtain, in real time, the number of terminals connected to the remote radio units that are not powered down in the indoor cell. And under the condition that the number of terminals connected with the remote radio units which are not powered down is greater than or equal to a second preset threshold, executing power-on operation on the remote radio units which are adjacent to the remote radio units which are not powered down and are in a powered down state.

In the embodiment of the present application, the power-on execution unit 705 is further configured to obtain, in real time, the number of weak coverage terminals corresponding to the remote radio units that are not powered down in the indoor cell. And under the condition that the number of the weak coverage terminals corresponding to the remote radio units which are not powered down is greater than or equal to a third preset threshold, executing power-on operation on the remote radio units which are adjacent to the remote radio units which are not powered down and are in a powered down state. The weak coverage terminal is a terminal with channel quality smaller than or equal to a fourth preset threshold.

In the embodiment of the present application, the power-on execution unit 705 is further configured to execute a power-on operation on all the remote radio units in a power-down state in the indoor unit when the number of terminals detected by the remote radio units in the indoor unit in the fourth preset time period is greater than or equal to the fifth preset threshold.

In the embodiment of the present application, the power-on execution unit 705 is further configured to predict a motion trail of the target terminal according to a transition probability of the target terminal between different remote radio units in the indoor cell. And executing power-on operation on the remote radio unit which is in a power-down state and is on the motion trail of the target terminal in the indoor cell.

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

In the embodiment of the application, any remote radio unit with the strongest channel quality of any terminal is switched to the first remote radio unit, wherein the remote radio units adjacent to any remote radio unit comprise the first remote radio unit.

In the embodiment of the present application, the method further includes a track determining unit 706, configured to determine a motion event of the target terminal, where the motion event is used to instruct a remote radio unit that any terminal experiences in time sequence during a call. And determining at least one n-order transition probability of any terminal between any remote radio unit of the indoor cell and other remote radio units in an energy-saving state according to the motion event of any terminal. Determining the sum of at least one n-order transition probability of any terminal between any remote radio unit and other remote radio units in an energy-saving state according to at least one n-order transition probability between any remote radio unit and other remote radio units in an energy-saving state, wherein n is an integer greater than or equal to 1. And determining a motion track corresponding to the at least one n-order transition probability of any terminal in any remote radio unit as the motion track of any terminal according to the fact that the sum of the at least one n-order transition probability of any terminal in any remote radio unit is larger than or equal to a seventh preset threshold.

In the embodiment of the application, at least one n-order transition between any remote radio unit and other remote radio units in an energy-saving state is probably the probability that any terminal moves from any remote radio unit to any other remote radio unit in an energy-saving state through n steps.

The control device 70 shown in fig. 7 further comprises a bus 707 for connecting the plurality of virtual units 701-706 described above.

In case of implementing the functions of the above integrated modules in the form of hardware, the embodiment of the present application provides another possible structure of the control device referred to in the above embodiment. As shown in fig. 8, the control apparatus 80 includes: a processor 802, a bus 804. Optionally, the control device may further comprise a memory 801; optionally, the control device may also include a communication interface 803.

The processor 802 may be any number of logic blocks, modules, and circuits that implement or perform the various examples described in connection with embodiments of the application. The processor 402 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 device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with embodiments of the application. Processor 402 may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

A communication interface 803 for connecting with other devices through a communication network. The communication network may be an ethernet, a radio access network, a wireless local area network (wireless local area networks, WLAN), etc.

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

As a possible implementation, the memory 801 may exist separately from the processor 802, and the memory 801 may be connected to the processor 802 through the bus 804 for storing instructions or program code. The processor 802, when calling and executing instructions or program codes stored in the memory 801, can implement the control method of the indoor distribution system provided by the embodiment of the present application.

In another possible implementation, the memory 801 may also be integrated with the processor 802.

Bus 804, which may be an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus 804 may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, only one thick line is shown in fig. 8, but not only one bus or one type of bus.

Some embodiments of the present application provide a computer readable storage medium (e.g., a non-transitory computer readable storage medium) having stored therein computer program instructions that, when run on a computer, cause the computer to perform a method of controlling an indoor distribution system as in any of the above embodiments.

By way of example, the computer-readable storage media described above can include, but are not limited to: magnetic storage devices (e.g., hard Disk, floppy Disk or tape, etc.), optical disks (e.g., compact Disk (CD), digital versatile Disk (DIGITAL VERSATILE DISK, DVD), etc.), smart cards, and flash Memory devices (e.g., erasable programmable read-Only Memory (EPROM), card, stick, or key drive, etc.). Various computer-readable storage media described herein can represent one or more devices and/or other machine-readable storage media for storing information. The term "machine-readable storage medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

An embodiment of the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method of controlling an indoor distribution system of any of the above embodiments.

The present application is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

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

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

And determining energy-saving time periods corresponding to a plurality of remote radio units in the indoor cell according to the measurement data samples corresponding to the terminals respectively, wherein the energy-saving time periods corresponding to the remote radio units are used for executing power-down operation on the remote radio units.

2. The method of claim 1, wherein prior to the collecting the respective measurement data samples for the plurality of terminals, the method further comprises:

and determining the energy-saving time period range of the indoor sub-cell according to the cell level load index in the preset time period.

3. The method according to claim 2, wherein the determining, according to the measurement data samples respectively corresponding to the plurality of terminals, energy-saving time periods respectively corresponding to the plurality of remote radio units in the cell of the room comprises:

According to the measurement data samples respectively corresponding to the terminals in the preset time period, determining energy-saving remote radio units respectively corresponding to a plurality of energy-saving time periods in the energy-saving time period range of the indoor cell;

and determining the energy-saving time periods respectively corresponding to the plurality of remote radio units according to the energy-saving remote radio units corresponding to the plurality of energy-saving time periods in the energy-saving time periods of the indoor partition cell.

4. The method according to claim 3, wherein the determining, according to the measurement data samples respectively corresponding to the plurality of terminals in the preset time period, the energy-saving remote radio units respectively corresponding to the plurality of energy-saving time periods in the energy-saving time period range of the indoor cell includes:

determining a first remote radio unit set outside a preset energy saving range in the plurality of remote radio units;

Determining a second remote radio unit set outside the preset energy saving range in each energy saving time period according to the measurement data samples corresponding to the plurality of terminals, wherein for the second remote radio units corresponding to each energy saving time period, the second remote radio unit set comprises a remote radio unit which can measure at least one user in the same period of history of the energy saving time period, or a remote radio unit which can measure the strongest channel quality of any terminal in the same period of history, or a minimum remote radio unit set which meets the coverage requirement and is determined according to the measurement data samples in the same period of history and a preset algorithm rule;

and determining the energy-saving remote radio units corresponding to each energy-saving time period respectively in the energy-saving time period range of the indoor cell according to the first remote radio unit set and the second remote radio unit set which is outside the preset energy-saving range in each energy-saving time period.

5. The method of claim 4, wherein the predetermined algorithm rule comprises 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:

And under the condition that the energy-saving time periods respectively corresponding to the plurality of remote radio units are determined, for a single remote radio unit in the plurality of remote radio units, executing power-down operation on the single remote radio unit in at least one energy-saving time period corresponding to the single remote radio unit.

7. The method according to claim 1, wherein the method further comprises:

And for any remote radio unit in the indoor cell, under the condition that the detection result of the terminal meets the requirement of a preset energy-saving gear in the energy-saving time period of the remote radio unit, powering down the remote radio unit in the energy-saving time period of the remote radio unit.

8. The method of claim 7, wherein the power saving level is used to indicate that the remote radio unit cannot detect a terminal during the power saving capable period;

Or, the energy-saving level is used for indicating that the terminal does not exist in the energy-saving time period, and the remote radio unit is used as the remote radio unit with the strongest channel quality;

Or the energy-saving gear is used for indicating the energy-saving time period, and all terminals detected by the remote radio unit are in the effective coverage range of the remote radio unit outside the preset energy-saving range.

9. The method according to claim 1, wherein the method further comprises:

acquiring the cell-level load of the cell division in real time;

and under the condition that the cell-level load is greater than or equal to a first preset threshold, performing power-on operation on all remote radio units in a power-down state in the indoor cell.

10. The method according to claim 1, wherein the method further comprises:

acquiring the number of terminals connected with the remote radio units which are not powered down in the indoor cell in real time;

And under the condition that the number of terminals connected with the remote radio units which are not powered down is greater than or equal to a second preset threshold, executing power-on operation on the remote radio units which are adjacent to the remote radio units which are not powered down and are in a powered down state.

11. The method according to claim 2, wherein the method further comprises:

acquiring the number of weak coverage terminals corresponding to the remote radio units which are not powered down in the indoor cell in real time;

Executing power-on operation on the radio remote units which are adjacent to the radio remote units and in the power-down state under the condition that the number of weak coverage terminals corresponding to the radio remote units which are not powered down is greater than or equal to a third preset threshold; ;

the weak coverage terminal is a terminal with channel quality smaller than or equal to a fourth preset threshold.

12. The method according to claim 10 or 11, wherein,

And in the terminals belonging to any remote radio unit, if the ratio of the number of terminals of signals of a first remote radio unit in the indoor cell to the number of terminals belonging to any remote radio unit is greater than or equal to a sixth preset threshold within a preset time range, wherein the adjacent remote radio units of any remote radio unit comprise the first remote radio unit.

13. The method according to claim 10 or 11, wherein,

And switching any remote radio unit with the strongest channel quality of any terminal into a first remote radio unit, wherein the remote radio units adjacent to any remote radio unit comprise the first remote radio unit.

14. The method according to claim 1, wherein the method further comprises:

And under the condition that the number of the terminals detected by the key remote radio units in the indoor cells in a fourth preset time period is greater than or equal to a fifth preset threshold, performing power-on operation on all the remote radio units in the indoor cells in a power-down state.

15. The method according to claim 1, wherein the method further comprises:

Predicting the motion trail of the target terminal according to the transition probabilities of the target terminal among different remote radio units in the indoor cell;

And executing power-on operation on the remote radio unit which is in a power-down state and is on the motion track of the target terminal in the indoor cell.

16. The method of claim 13, wherein predicting the motion profile of any terminal based on the probability of transition of the any terminal between different remote radio units within the cell comprises:

Determining a motion event of the target terminal, wherein the motion event is used for indicating a remote radio unit which is experienced by any terminal according to a time sequence in a call process;

Determining at least one n-order transition probability of any terminal between any remote radio unit of the indoor cell and other remote radio units in an energy-saving state according to the motion event of any terminal;

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

Responding to the fact that the sum of at least one n-order transition probability of any terminal at any remote radio unit is larger than or equal to a seventh preset threshold, and determining a motion track corresponding to the at least one n-order transition probability of any terminal at any remote radio unit as the motion track of any terminal;

The probability of at least one n-order transition from any remote radio unit to the rest of remote radio units in an energy-saving state refers to the probability that any terminal moves from any remote radio unit to any rest of remote radio units in an energy-saving state through n steps.

17. A control apparatus, characterized in that the control apparatus comprises: memory and a processor. The memory being coupled to the processor, the memory being for storing computer program code comprising computer instructions for receiving data and transmitting data, the processor executing the computer instructions to cause the control device to perform the method of any of claims 1-16.

18. A computer readable storage medium comprising computer instructions that run on an electronic device to cause the electronic device to perform the method of any of the preceding claims 1-16.