WO2024093705A1 - Procédé de commande et dispositif de commande pour système de distribution intérieur - Google Patents

Procédé de commande et dispositif de commande pour système de distribution intérieur Download PDF

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Publication number
WO2024093705A1
WO2024093705A1 PCT/CN2023/125996 CN2023125996W WO2024093705A1 WO 2024093705 A1 WO2024093705 A1 WO 2024093705A1 CN 2023125996 W CN2023125996 W CN 2023125996W WO 2024093705 A1 WO2024093705 A1 WO 2024093705A1
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WIPO (PCT)
Prior art keywords
energy
radio
remote
terminal
saving
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PCT/CN2023/125996
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English (en)
Chinese (zh)
Inventor
王绍江
柯雅珠
张波
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中兴通讯股份有限公司
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Publication of WO2024093705A1 publication Critical patent/WO2024093705A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • an embodiment of the present disclosure provides a computer-readable storage medium, on which computer program instructions are stored.
  • the control method of the indoor distribution system described in any of the above embodiments is implemented.
  • an embodiment of the present disclosure provides a computer program product, which includes computer program instructions.
  • 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.
  • 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.
  • 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.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features.
  • a base station of an indoor distribution system usually includes dozens to hundreds of Pico Remote Radio Units (pRRUs).
  • pRRUs Pico Remote Radio Units
  • 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.
  • BBU Building Base band Unit
  • Each pRRU covers a small area indoors.
  • each pRRU can provide signals for terminals in the area covered by the pRRU.
  • the pRRU can be powered off to save energy.
  • 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.
  • 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.
  • the power-off and power-on process of the pRRU takes a relatively long time.
  • the above-mentioned moving terminal can be understood as a terminal in a moving state.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • pRRU1 collects 30 measurement reports
  • pRRU2 collects the remaining 20 measurement reports
  • pRRU1 belongs to the minimum reserved pRRU set.
  • Step 301b23 Eliminate the covered measurement data samples.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the pRRU 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.
  • the pRRU 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.
  • 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.
  • a power-off operation is performed on the pRRU in the energy-saving time period.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the possible movement route of the target terminal can be predicted based on the transfer probability of the target terminal between different pRRUs.
  • the pRRU on the possible movement route of the moving target terminal can be powered on in advance.
  • conditions b and c are applicable to relatively stationary or slowly moving terminals, and condition e is applicable to terminals in motion.
  • 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.
  • 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.
  • the other pRRU is the adjacent pRRU of the pRRU.
  • pRRU1 in an area covered by a terminal has the strongest channel detection information for the terminal.
  • pRRU2 has the strongest channel detection information for the terminal.
  • pRRU2 is the adjacent pRRU of pRRU1.
  • 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.
  • 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.
  • 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.
  • RRC radio resource control
  • the pRRU with the strongest measurement data sample of the target terminal is detected in the area covered by the terminal.
  • 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.
  • 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.
  • 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.
  • n 1, 2, ..., N, where N is a positive integer.
  • s represents the transfer state set, which here refers to the set of all pRRUs in the cell.
  • 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.
  • 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.
  • 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 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.
  • the embodiments of the present disclosure may also be implemented through the following solutions.
  • 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.
  • the pRRU information on the moving route is obtained through the aisle information of the indoor elevator, and is confirmed by manual identification.
  • a big data processing unit may not be used to store and process historical data, and the unit may be integrated into the BBU.
  • 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
  • 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.
  • 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 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.
  • Other unselected pRRUs refer to pRRU6 to pRRU10.
  • each round of selection process can be understood as multiple selections of pRRUs to place the required pRRUs into minReservedSet.
  • the initial pheromone strength of each pRRU in the ReservedSet is 0.1, so the selection probability of each pRRU is equal.
  • the pheromone strength of pRRU1 to pRRU5 is 0.29
  • the pheromone strength of pRRU6 to pRRU10 is 0.09.
  • minReservedSet (pRRU1)
  • minReservedSet (pRRU1)
  • the probability of pRRU2 to pRRU5 being selected is 0.29/(0.29 ⁇ 4+0.09 ⁇ 5)
  • the probability of pRRU6 to pRRU10 being selected is 0.09/(0.29 ⁇ 4+0.09 ⁇ 5).
  • minReservedSet (pRRU1, pRRU2)
  • the remaining pRRUs are pRRU2 to pRRU5 and pRRU7 to pRRU10.
  • 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).
  • control device includes hardware structures and/or software modules corresponding to the execution of each function.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the preset algorithm rules include at least one of a greedy algorithm, an ant colony algorithm, a genetic algorithm or a particle swarm algorithm.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • a power-on execution unit 705 which is used to obtain the cell-level load of the indoor cell in real time.
  • a power-on operation is performed on all the radio remote units in the indoor cell that are in a power-off state.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the radio frequency remote units adjacent to any radio frequency remote unit include the first radio frequency remote unit.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the embodiment of the present disclosure provides another possible structure of the control device involved in the above-mentioned embodiment.
  • the control device 80 includes: a memory 801, a processor 802 and a bus 804.
  • 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.
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • 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.
  • 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.
  • 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.
  • the memory 801 may also be integrated with the processor 802 .
  • the bus 804 may be an Extended Industry Standard Architecture (EISA) bus, etc.
  • EISA Extended Industry Standard Architecture
  • the bus 804 may be divided into an address bus, a data bus, a control bus, etc.
  • 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.
  • the computer program instructions 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.
  • 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.
  • the computer program product 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.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

La présente invention concerne un procédé de commande et un dispositif de commande pour un système de distribution intérieur. Le procédé consiste à : collecter des échantillons de données de mesure correspondant respectivement à une pluralité de terminaux dans une cellule de distribution intérieure, l'échantillon de données de mesure correspondant à chaque terminal comprenant des informations de temps de mesure et/ou des informations concernant une unité radio à distance pouvant détecter le terminal et/ou des informations de qualité de canal du terminal détectées par l'unité radio à distance ; et selon les échantillons de données de mesure correspondant respectivement à la pluralité de terminaux, déterminer des périodes de temps d'économie d'énergie correspondant respectivement à une pluralité d'unités radio à distance dans la cellule de distribution intérieure, la période de temps d'économie d'énergie correspondant à chaque unité radio à distance étant utilisée pour exécuter une opération de mise hors tension sur l'unité radio à distance.
PCT/CN2023/125996 2022-10-31 2023-10-23 Procédé de commande et dispositif de commande pour système de distribution intérieur WO2024093705A1 (fr)

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Citations (5)

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US20170339706A1 (en) * 2016-03-10 2017-11-23 Cable Television Laboratories, Inc. System and method for network controlled dynamic small cell management
WO2018098763A1 (fr) * 2016-11-30 2018-06-07 华为技术有限公司 Procédé et appareil de commande d'unité radio distante
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CN114071661A (zh) * 2020-07-31 2022-02-18 大唐移动通信设备有限公司 一种基站节能控制方法和装置
CN114916047A (zh) * 2021-02-09 2022-08-16 大唐移动通信设备有限公司 一种状态控制方法、装置、Pico RRU及存储介质

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Publication number Priority date Publication date Assignee Title
US20170339706A1 (en) * 2016-03-10 2017-11-23 Cable Television Laboratories, Inc. System and method for network controlled dynamic small cell management
WO2018098763A1 (fr) * 2016-11-30 2018-06-07 华为技术有限公司 Procédé et appareil de commande d'unité radio distante
CN113055903A (zh) * 2019-12-26 2021-06-29 中国电信股份有限公司 用于基站的节能关断的方法、设备和介质
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