WO2022224536A1 - Base station function deployment control device, base station function deployment control method, and computer program - Google Patents

Abstract

This base station function deployment control device comprises: a priority designation information acquisition unit that acquires, through an interface with an SMO function unit, priority designation information indicating an area or a cell for which a required quality achievement rate is to be preferentially improved in a wireless access network based on O-RAN specifications; and a control unit that preferentially determines base station function deployment for the area or the cell for which the required quality achievement rate is to be preferentially improved and which is indicated in the priority designation information, from among areas or cells included in the wireless access network.

Description

Base station function allocation control device, base station function allocation control method, and computer program

The present invention relates to a base station function allocation control device, a base station function allocation control method, and a computer program.
This application claims priority based on Japanese Patent Application No. 2021-71090 filed in Japan on April 20, 2021, the content of which is incorporated herein.

　In the 5th generation (5G) mobile communication system (hereinafter referred to as 5G system), studies are being conducted to further improve performance, such as throughput, communication delay, and the number of connections, from the initial system. In addition, various services such as robot control, connected cars, AR (Augmented Reality), VR (Virtual Reality), etc. are being provided using 5G systems. Thus, it is becoming more and more important to satisfy the communication quality required by each service.

Radio Access Network (RAN) slicing technology is known as a wireless communication technology for satisfying the communication quality required by such diversifying services. The RAN slicing technology is a technology that divides the RAN into a plurality of logical networks (slices) and flexibly customizes the slices according to services (see Patent Document 1, for example).

According to RAN slicing technology, for example, by changing the arrangement of CU (Central Unit) and DU (Distributed Unit), which are base station functions, communication delay, inter-cell cooperation performance, and necessary network resources (radio resources and computer resources and transmission line resources) change. For this reason, in the technology described in Patent Document 1, by connecting multiple sets of vCU (Virtual CU) and vDU (Virtual DU) to an RU (Radio Unit) forming a single cell, a single A plurality of different base station functional allocation slices are realized for each cell.

In addition, the O-RAN ((Open Radio Access Network) Alliance (O-RAN Alliance) is considering openness and intelligentization of next-generation radio access networks such as 5G systems (for example, see Non-Patent Document 1). Among the O-RAN specifications formulated by the O-RAN Alliance, Non-Patent Document 1 describes "Non-RT RIC (Non-Real Time RAN Intelligent Controller)" according to traffic fluctuations. A use case is defined for optimizing NSSI (Network Slice Subnet Instance) using .

In the use case of this non-patent document 1, "Non-RT RIC" collects the necessary KPIs (Key Performance Indicators) from each node via the O1 interface. The parameters that can be collected by the O1 interface correspond to the parameters defined in Non-Patent Document 2. For example, parameters such as "DL PRB usage", "UL PRB usage", "Average DL UE throughput", "Average UL UE throughput", "Number of PDU Sessions requested". Analyze the information collected by "Non-RT RIC" and decide to change the resources related to NSSI. For example, change "VNF resources" and "slice subnet attributes" (see Non-Patent Document 3). "Non-RT RIC" changes resource settings related to NSSI for each node via the O1 interface.

In addition, methods using deep reinforcement learning are being studied to perform network control that takes into account various parameters. Deep reinforcement learning is a machine learning method that learns optimal behavior (control) through trial and error in an environment to be controlled. Furthermore, in recent years, distributed learning (distributed reinforcement learning) in deep reinforcement learning has attracted attention in order to improve learning efficiency. For example, in "Ape-X", a method of distributed reinforcement learning, multiple "Actors" collect experience (learning data) through trial and error with the environment, and learn this by "Learner". The "Actor" learning model is periodically updated by the "Learner". By performing parallel processing with multiple "Actors", various data can be learned efficiently.

　Non-Patent Document 4 describes a radio resource allocation control technique using distributed reinforcement learning. In the radio resource allocation control technique described in Non-Patent Document 4, each "Actor" optimally controls the radio resource allocation for each slice, thereby satisfying the quality requested by the user with a small amount of radio resources.

JP 2020-136787 A

　Since the traffic demand changes dynamically in the RAN, the traffic flowing through each slice also changes dynamically. In addition, the bandwidth required for transmission lines and the computer resources of antenna sites and accommodation stations fluctuate due to traffic fluctuations. Therefore, in order to meet the quality requirements of many users with limited network resources, it is preferable to adaptively change the RAN base station functional arrangement according to traffic fluctuations.

Here, when distributed reinforcement learning is applied to base station functional allocation, it is conceivable that each "Actor" controls the base station functional allocation (mapping of slices and base station functions) of each cell. When determining the base station functional allocation, the transmission paths shared between cells, the computer resources of the accommodating station, and the presence or absence of inter-cell cooperation differ depending on the base station functional allocation of each cell. It is preferable to determine the base station functional allocation of each cell to maximize.

However, since "Actors" act independently in distributed reinforcement learning, multiple "Actors" do not consider the actions of other "Actors". ), it is difficult to optimize the base station functional allocation across the RAN. For example, if base station functions are arranged so that all cells consume a large amount of the transmission line band even though the transmission line band is vacant, the transmission line will be congested. Further, if congestion occurs due to changes in traffic demand, the congestion will continue until the timing of the next change in base station functional allocation. On the other hand, in an emergency such as when a disaster occurs, it is required to preferentially change the base station function allocation for the area or cell in which the emergency has occurred. Therefore, it is a challenge to properly control the execution of the base station functional allocation.

The present invention has been made in consideration of such circumstances, and its purpose is to appropriately control execution of base station functional allocation in an O-RAN specification radio access network.

(1) According to one aspect of the present invention, a base station functional allocation control apparatus assigns priority designation information indicating an area or cell for which the desired quality achievement rate is to be preferentially improved in an O-RAN specification radio access network to an SMO (Service and Management Orchestration) A priority designation information acquisition unit that is acquired through an interface between the function unit, and the requested quality achievement rate indicated in the priority designation information among areas or cells included in the radio access network. a control unit that preferentially determines the base station functional arrangement for an area or cell to be preferentially improved.
(2) According to one aspect of the present invention, in the base station functional allocation control device of (1), the priority designation information indicates different priorities for all areas or cells included in the radio access network. Information to be specified.
(3) According to one aspect of the present invention, in the base station functional allocation control device of (1) above, the priority designation information indicates the desired quality achievement rate among all areas or cells included in the radio access network. This is information specifying the maximum priority only for areas or cells to be preferentially improved.
(4) According to an aspect of the present invention, in the base station functional allocation control device according to any one of (1) to (3) above, the control unit, for each area or cell included in the radio access network, Base station functional allocation is determined by distributed reinforcement learning.
(5) According to one aspect of the present invention, the base station functional allocation control device of (1) is implemented using a Non-RT RIC (Non-Real Time RAN Intelligent Controller).

(6) According to one aspect of the present invention, in a base station functional allocation control method in an O-RAN specification radio access network, a base station functional allocation control device controls the required quality achievement rate in an O-RAN specification radio access network. a priority designation information acquisition step of acquiring priority designation information indicating an area or cell in which the priority is to be improved through an interface with an SMO (Service and Management Orchestration) function unit; a control step of preferentially determining a base station functional arrangement for an area or cell in which the desired quality achievement rate indicated in the priority designation information is to be preferentially improved among areas or cells included in the radio access network; ,including.

(7) According to one aspect of the present invention, the computer program indicates to the computer of the base station functional allocation control device an area or cell in which the required quality achievement rate is to be preferentially improved in the O-RAN specification radio access network. a priority designation information obtaining step of obtaining priority designation information through an interface with an SMO (Service and Management Orchestration) function unit; and a control step of preferentially determining a base station functional arrangement for an area or cell in which the desired quality achievement ratio is to be preferentially improved.

According to the present invention, it is possible to obtain the effect of being able to appropriately control the execution of base station functional allocation in an O-RAN specification radio access network.

1 is a block diagram illustrating a configuration example of a radio access network (RAN) according to one embodiment; FIG. FIG. 2 is an explanatory diagram showing an example of base station functional arrangement of RAN according to one embodiment; 4 is a block diagram showing a configuration example of a base station function allocation control unit according to one embodiment; FIG. It is a block diagram which shows the structural example of the control part which concerns on one Embodiment. 4 is a flow chart of a schematic procedure of a base station functional allocation control method according to an embodiment; FIG. 4 is a sequence diagram showing an example of detailed procedures of a base station functional allocation control method according to an embodiment; 4 is a table showing configuration example 1 of priority designation information according to an embodiment; FIG. 11 is a table showing configuration example 2 of priority designation information according to an embodiment; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration example of a radio access network according to one embodiment. A radio access network (RAN) 1 shown in FIG. 1 is a RAN to which the RAN slicing technique is applied. Also, in RAN1, the O-RAN specification is applied.

FIG. 2 shows an example of the base station functional arrangement of RAN1. In the example of FIG. 2, a total of five sets of vCUs and vDUs are connected to RUs forming a single cell. A first example “O-RAN slice subnet#1” is a C-RAN (Centralized-RAN) arrangement, and both vCU and vDU are arranged in the accommodating station. The C-RAN arrangement is characterized in that inter-cell coordination is possible, but the required bandwidth of the transmission path is large. The second example “O-RAN slice subnet # 2” and the third example “O-RAN slice subnet # 3” are S-RAN (Split-RAN) deployments, vDUs are deployed at antenna sites and A vCU is placed in the accommodation station. The S-RAN arrangement does not allow inter-cell cooperation, but has the feature that the required bandwidth of the transmission path is small. The fourth example “O-RAN slice subnet # 4” and the fifth example “O-RAN slice subnet # 5” are D-RAN (Distributed RAN) deployments, and both vCU and vDU are in the antenna site. placed. The D-RAN arrangement does not allow cooperation between cells, but has a feature of small communication delay.

As illustrated in FIG. 2, in RAN1, by connecting multiple sets of vCUs and vDUs to RUs that form a single cell, a base station with multiple different characteristics for a single cell A slice of functional layout can be realized. As a result, in RAN1, it becomes possible to provide wireless communication services with a plurality of different features in a single cell, and it is possible to adapt to various communication qualities required by a wide variety of services.

In FIG. 1, RAN 1 includes an SMO (Service and Management Orchestration) function (SMO Functions) 11, a "Non-RT RIC (non-real-time RAN intelligent controller)" 12 including a base station function allocation control unit 20, and a base station a function group 2; The base station function allocation control unit 20 corresponds to a base station function allocation control device. In this embodiment, the base station functional allocation control unit 20 is implemented using the "Non-RT RIC" 12. Also, the SMO function unit 11 and the "Non-RT RIC" 12 are implemented using the SMO framework 10. FIG. The base station functional group 2 is composed of RU, vCU and vDU as illustrated in FIG.

The SMO framework 10 provides the O1 interface defined by the O-RAN specifications. The "Non-RT RIC" 12 acquires KPIs (key performance indicators) from the base station function group 2 via the O1 interface.

The SMO function unit 11 and the "Non-RT RIC" 12 exchange messages via the interface 100. An interface 100 is an interface with the SMO function unit 11 .

FIG. 3 is a block diagram showing a configuration example of the base station function allocation control section 20 according to this embodiment. In FIG. 3 , base station function allocation control section 20 includes priority designation information acquisition section 210 , KPI acquisition section 203 , base station function allocation setting information transmission section 204 , and control section 205 .

The priority designation information acquisition unit 210 acquires priority designation information via the interface 100 with the SMO function unit 11 . The priority designation information is information indicating an area or cell in RAN1 in which the required quality achievement rate is preferentially desired to be improved. The requested quality achievement rate is a rate indicating how much the communication quality requested by the user has been achieved.

The KPI acquisition unit 203 acquires KPIs from the base station function group 2 via the O1 interface. The KPIs that the KPI acquisition unit 203 acquires from the base station function group 2 are, for example, the throughput of each service, the utilization rate of radio resources, the utilization rate of computer resources, the utilization rate of transmission line bandwidth, and the like.

The base station function allocation setting information transmission unit 204 transmits base station function allocation setting information via the interface 100 with the SMO function unit 11 . The base station functional allocation setting information is information indicating the content of change in the base station functional allocation for changing the base station functional allocation in RAN1.

The control unit 205 determines the next base station functional arrangement based on the KPI acquired by the KPI acquisition unit 203. The control unit 205 preferentially acquires a base for an area or cell in which the required quality achievement rate indicated in the priority designation information acquired by the priority designation information acquisition unit 210 is to be preferentially improved, out of the areas or cells included in the RAN1. Determine station function allocation.

Each part of the base station function allocation control unit 20 realizes its function by the CPU executing a computer program for realizing the function of each part.

FIG. 4 is a block diagram showing a configuration example of a control unit according to this embodiment. The control unit 205 shown in FIG. 1 determines base station functional allocation by distributed reinforcement learning for each area or cell included in RAN1. RAN1 includes a plurality of cells (Cell#1, Cell#2, . . . , Cell#n). The control unit 205 generates a plurality of “Actors” 301 (Actor#1, Actor#2, . . . , Actor#) respectively corresponding to a plurality of cells (Cell#1, Cell#2, . n), 'Repository' 302, and 'Learner' 303.

Each "Actor" 301 collects "Experiences" (learning data) through trial and error with the cell (environment) based on the KPI obtained from the cell it is in charge of. “Repository” 302 stores learning data collected by each “Actor” 301 . 'Learner' 303 uses learning data stored in 'Repository' 302 to learn a base station functional allocation learning model. The base station functional arrangement learning model of each 'Actor' 301 is periodically updated by the 'Learner' 303 . A certain "Actor" 301 uses a base station functional allocation learning model to optimize the base station functional allocation in the cell that the "Actor" 301 is in charge of.

The control unit 205 controls the base station in each cell (Cell #1, Cell #2, ..., Cell #n) by each "Actor" 301 (Actor #1, Actor #2, ..., Actor #n) Find the optimal solution for functional placement. At this time, control section 205 sets the order (cell order), and the optimum solution for base station functional allocation is obtained according to the order of the cell. Here, if there is priority designation information acquired by the priority designation information acquisition unit 210, the control unit 205 selects a cell whose required quality achievement rate indicated in the priority designation information is to be preferentially improved, from the topmost cell. Give the order of the cells. Therefore, the optimal solution of the base station functional allocation is preferentially obtained for the cell whose desired quality achievement rate indicated in the priority designation information is to be preferentially improved. As a result, it is possible to quickly change the base station functional allocation in the cell in which the desired quality achievement ratio indicated in the priority designation information is to be preferentially improved. For example, in an emergency such as when a disaster occurs, it is possible to quickly change the base station functional arrangement for cells existing in the area where the emergency has occurred so as to cope with the emergency.

Next, the overall procedure of the base station functional allocation control method according to this embodiment will be described with reference to FIG. FIG. 5 is a flow chart of a schematic procedure of the base station functional allocation control method according to the present embodiment.

(Step S11) The base station function allocation control section 20 (control section 205) determines whether there is priority designation information acquired by the priority designation information acquisition section 210 or not. If there is priority designation information acquired by the priority designation information acquisition unit 210, the process proceeds to step S12; otherwise, the process proceeds to step S13.

(Step S12) The base station function allocation control unit 20 (control unit 205) selects the cell whose required quality achievement rate indicated in the priority designation information acquired by the priority designation information acquisition unit 210 is to be preferentially improved. Set the order of cells (top priority setting).

(Step S13) The base station function allocation control section 20 (control section 205) determines the cell order for a plurality of cells (Cell#1, Cell#2, . . . , Cell#n). At this time, if there is a highest priority setting, the order of the cells is assigned from the highest priority to the cells with the highest priority setting.

Note that the top priority setting may be canceled after the cell order is determined in step S13, or may be canceled at regular intervals.

Next, base station function allocation is performed for each cell (Cell#1, Cell#2, . . . , Cell#n) in the order of cells determined in step S13. In FIG. 5, Cell#1, Cell#2, . . . , Cell#n are shown in order for convenience.

Steps S14 and S15 are executed in executing the cell base station functional allocation. Here, "Cell #1" is taken as an example to describe the execution of the base station functional allocation, but other cells are similar.

(Step S14) The base station function allocation control section 20 (KPI acquisition section 203) acquires KPI from "Cell #1".

(Step S15) Based on the KPI acquired from "Cell #1", the base station functional allocation control unit 20 (control unit 205) determines the next base station functional allocation in "Cell #1". to decide. The base station function allocation control unit 20 (control unit 205) generates base station function allocation setting information regarding the next base station function allocation of the determined "Cell #1". The base station functional allocation setting information is information indicating the change contents of the base station functional allocation for changing the base station functional allocation in "Cell #1" to the next base station functional allocation.

Next, the base station function allocation control section 20 (base station function allocation setting information transmitting section 204) transmits the base station function allocation setting information of "Cell #1" generated by the control section 205 to the SMO function section 11. do. Next, the SMO function unit 11 sets to change the base station function allocation of "Cell #1" of the base station function group 2 based on the base station function allocation setting information of "Cell #1". to run. As a result, the base station functional arrangement of "Cell #1" of the base station functional group 2 is changed to the next base station functional arrangement.

Next, detailed procedures of the base station functional allocation control method according to the present embodiment will be described with reference to FIG. FIG. 6 is a sequence diagram showing an example of detailed procedures of the base station functional allocation control method according to this embodiment.

(Step S201) The "External system" sends an "Emergency notification" message to the SMO function unit 11. The "Emergency notification" message corresponds to priority information.

(Step S202) Next, the SMO function unit 11 transmits an "Emergency notification" message to the "Non-RT RIC" 12 via the interface 100. The base station function allocation control unit 20 acquires the "Emergency notification" message.

(Step S203) Next, the base station functional allocation control unit 20 determines the execution order (cell order) of the base station functional allocation. At this time, the base station function allocation control unit 20 assigns the order of the cells from the highest level to the cells for which the required quality achievement rate indicated in the "Emergency notification" message received from the SMO function unit 11 is to be preferentially improved. .

(Step S204) Next, the base station function allocation control unit 20 receives the "Performance measurements" message from each node (O-CU, O-DU1, O-DUN) of the base station function group 2 via the O1 interface. The base station function allocation control unit 20 acquires KPI from the "Performance measurements" message.

(Step S205) Next, the base station function allocation control unit 20 determines the next base station function allocation based on the KPI obtained from the "Performance measurements" message for each cell according to the cell order determined in step S203. . The base station functional allocation control unit 20 generates base station functional allocation setting information regarding the determined next base station functional allocation of each cell.

Next, steps S206 to S207 are executed as a setting change sequence for the base station functions. This setting change sequence of the base station function is based on the O-RAN specification "Reconfiguration of O-RAN Virtual Network Function(s) (O-RAN.WG6.ORCH-USE-CASES-v01.00)" .

(Step S206) The base station function allocation control unit 20 transmits the "Reconfig NF set" message containing the base station function allocation setting information for each cell generated in step S205 to the SMO function unit 11 via the interface 100. The SMO function unit 11 acquires the base station function allocation setting information of each cell from the “Reconfig NF set” message received by the interface 100 .

(Step S207) The SMO function unit 11 transmits a "Configure NF" message to each node (O-CU, O-DU1, O-DUN) of the base station function group 2 via the O1 interface. This "Configure NF" message includes setting information for changing to the next base station functional layout of each cell indicated by the base station functional layout setting information of each cell acquired in step S206. As a result, the base station functional arrangement of each cell of the base station functional group 2 is changed to the next base station functional arrangement of each cell.

Next, a configuration example of priority designation information according to the present embodiment will be described with reference to FIGS. 7 and 8. FIG.

FIG. 7 shows a configuration example 1 of priority designation information according to this embodiment. In configuration example 1 of the priority designation information in FIG. 7, the priority designation information is information that designates different priorities for all cells included in RAN1. In the example of the priority designation information in FIG. 7, the cell with "cell identifier (cell ID)=3" and the cell with "cell ID=4" are cells in which an emergency has occurred, and the requested quality achievement rate is given priority. This is the cell that we want to improve. Therefore, the highest priority "1" is given to the cell with "cell ID=3", and the second highest priority "2" is given to the cell with "cell ID=4". . The control unit 205 determines the order of the cells in order of the priority of each cell indicated in the priority designation information in FIG.

FIG. 8 shows a configuration example 2 of priority designation information according to this embodiment. In the configuration example 2 of the priority designation information in FIG. 8, the priority designation information is information in which the maximum priority is designated only for the cell whose required quality achievement rate is to be preferentially improved among all the cells included in RAN1. is. In the example of the priority designation information in FIG. 8, the cell with "cell ID=3" and the cell with "cell ID=4" are cells in which an emergency has occurred, and it is desired to improve the required quality achievement rate preferentially. cell. Therefore, the highest priority "1" is assigned only to two cells, the cell with "cell ID=3" and the cell with "cell ID=4". The control unit 205 selects the cell of "cell ID=3" and the cell of "cell ID=4" to which the highest priority "1" shown in the priority designation information in FIG. give the order of Then, the order of the cells is sequentially assigned to the remaining "cell ID=1, 2, 5" cells. It should be noted that the ordering among multiple cells with the same priority follows a predetermined ordering rule. The predetermined ordering rule may be, for example, random ordering or ordering based on a predetermined communication quality parameter.

Although the priority is designated for each cell in the examples of priority designation information in FIGS. 7 and 8, the present invention is not limited to this. A priority may be specified for each area in the priority specification information. In this case, the priority of the area is designated for all cells included in the same area.

Also, in the example of priority designation information in FIGS. 7 and 8, priority is designated for all cells included in RAN1, but this is not limiting. The priority designation information may be information designating only an area or a cell for which the requested quality achievement rate is to be preferentially improved.

As described above, according to the present embodiment, it is possible to preferentially change the base station function allocation for the area or cell in which the emergency occurs, for example, in the event of an emergency such as a disaster. As a result, it is possible to obtain the effect of being able to appropriately control the execution of the base station functional allocation in the O-RAN specification radio access network.

As an example of emergency response, when a fire or crime occurs, by preferentially changing the base station functional allocation in the cell where the incident occurred, the quality of communication related to activities such as firefighting, police, and emergency services will be improved. to improve For example, the base station function layout is preferentially changed so as to improve the quality of communication by mobile terminals used by personnel involved in activities such as firefighting, police, and ambulance. For example, the base station function layout is preferentially changed so as to improve the quality of communication by emergency vehicles, unmanned flying vehicles, security cameras, and the like.

As a result, it will be possible to improve overall service quality in radio access networks, for example. It will be possible to contribute to the promotion of industrialization and the expansion of innovation.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like are included within the scope of the present invention.

Alternatively, a computer program for realizing the functions of the devices described above may be recorded in a computer-readable recording medium, and the program recorded in the recording medium may be read and executed by the computer system. Note that the “computer system” referred to here may include hardware such as an OS and peripheral devices.
In addition, "computer-readable recording medium" includes writable nonvolatile memories such as flexible discs, magneto-optical discs, ROMs and flash memories, portable media such as DVDs (Digital Versatile Discs), and computer system built-in media. A storage device such as a hard disk that

Furthermore, "computer-readable recording medium" means a volatile memory (e.g., DRAM (Dynamic Random Access Memory)), which holds the program for a certain period of time, is also included.
Further, the above program may be transmitted from a computer system storing this program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in a transmission medium. Here, the "transmission medium" for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
Further, the program may be for realizing part of the functions described above. Further, it may be a so-called difference file (difference program) that can realize the above-described functions in combination with a program already recorded in the computer system.

1 Radio Access Network (RAN)
2 base station function group 10 SMO framework 11 SMO function unit 12 Non-RT RIC
20 base station function allocation control unit 210 priority designation information acquisition unit 203 KPI acquisition unit 204 base station function allocation setting information transmission unit 205 control unit

Claims (7)

1. The interface between the SMO (Service and Management Orchestration) functional unit and the priority designation information indicating the area or cell whose required quality achievement rate is to be preferentially improved in the O-RAN (Open Radio Access Network) specification radio access network. a priority designation information acquisition unit that acquires via
   a control unit that preferentially determines a base station function arrangement for an area or cell in which the desired quality achievement ratio indicated in the priority designation information is to be preferentially improved, among the areas or cells included in the radio access network;
   A base station functional allocation control device comprising:
2. The base station function allocation control apparatus according to claim 1, wherein the priority designation information is information designating different priorities for all areas or cells included in the radio access network.
3. The priority designation information is information that designates a maximum priority only for an area or cell whose required quality achievement rate is to be preferentially improved among all areas or cells included in the radio access network. 2. The base station functional allocation control device according to 1.
4. The base station functional allocation control device according to any one of claims 1 to 3, wherein the control unit determines the base station functional allocation by distributed reinforcement learning for each area or cell included in the radio access network.
5. The base station functional allocation control device according to any one of claims 1 to 4, wherein the base station functional allocation control device is implemented using a Non-RT RIC (Non-Real Time RAN Intelligent Controller).
6. A base station function allocation control method in a radio access network of O-RAN (Open Radio Access Network) specification,
   A base station function allocation control device transmits priority designation information indicating an area or a cell in which the required quality achievement rate is to be preferentially improved in an O-RAN specification radio access network to an SMO (Service and Management Orchestration) function unit. a priority designation information obtaining step obtained through an interface;
   The base station function allocation control device prioritizes base stations for areas or cells in which the desired quality achievement rate indicated in the priority designation information is to be preferentially improved, among areas or cells included in the radio access network. a control step for determining functional placement;
   A base station functional allocation control method comprising:
7. In the computer of the base station functional allocation controller,
   The interface between the SMO (Service and Management Orchestration) functional unit and the priority designation information indicating the area or cell whose required quality achievement rate is to be preferentially improved in the O-RAN (Open Radio Access Network) specification radio access network. a priority designation information obtaining step obtained through
   a control step of preferentially determining a base station functional arrangement for an area or cell in which the desired quality achievement rate indicated in the priority designation information is to be preferentially improved among areas or cells included in the radio access network;
   A computer program for executing

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