JP7440449B2 - Base station function allocation control device, base station function allocation control method, and computer program - Google Patents

Description

The present invention relates to a base station function allocation control device, a base station function allocation control method, and a computer program.

In the fifth generation (5G) mobile communication system (hereinafter referred to as 5G system), studies are being conducted to further improve the performance of the initial system, such as throughput, communication delay, and number of connections. In addition, a wide variety of services such as robot control, connected cars, AR (Augmented Reality), and VR (Virtual Reality) are being provided using 5G systems, and individual services are The importance of meeting required communication quality is increasing.

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

According to RAN slicing technology, for example, by changing the arrangement of base station functions such as CU (Central Unit) and DU (Distributed Unit), communication delay, inter-cell cooperation performance, and necessary network resources (such as radio resources and computer resources and transmission path resources) change. Therefore, 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, slices with multiple different base station functional arrangements have been realized for each cell.

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

In the use case of this non-patent document 1, the "Non-RT RIC" collects necessary KPI (Key Performance Indicator) 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, the parameters include "DL PRB usage", "UL PRB usage", "Average DL UE throughput", "Average UL UE throughput", and "Number of PDU Sessions requested". The "Non-RT RIC" analyzes the collected information and decides on resource changes related to NSSI. For example, "VNF resources" and "slice subnet attributes" are changed (see Non-Patent Document 3). The "Non-RT RIC" changes the settings of resources related to NSSI for each node via the O1 interface.

Japanese Patent Application Publication No. 2020-136787

O-RAN WG1, “Slicing architecture”, v03.00, 3.2.3 Use Case 3: NSSI Resource Allocation Optimization 3GPP, “TS 28.552”, V17.1.0, 2020-12 3GPP, “TS 28.541”, V15.4.0, 2019-09

Since traffic demand changes dynamically in the RAN, the traffic flowing to each slice also changes dynamically. Furthermore, due to changes in traffic, the bandwidth required for the transmission path and the computer resources at the antenna site and accommodation station change. Therefore, in order to satisfy the quality demands of many users with limited network resources, it is preferable to adaptively change the base station functional arrangement of the RAN in accordance with traffic fluctuations.

However, in the above-mentioned use case of Non-Patent Document 1, the control node ("Non-RT RIC") cannot determine the base station function layout by considering the computer resources of each server that implements the base station function. . This is because the parameters specified in Non-Patent Document 2 as parameters that can be collected by the O1 interface specify computer resource information regarding CU, but do not specify computer resource information regarding DU. This is because the "Non-RT RIC" cannot acquire computer resource information regarding the DU via the O1 interface. Therefore, since the control node (Non-RT RIC) cannot grasp the computer resources of each server that implements the base station function, it takes into consideration the computer resources of each server that implements the base station function, and It was not possible to determine the functional layout.

The present invention has been made in consideration of such circumstances, and its purpose is to determine base station functional allocation based on information on computer resources related to DU in an O-RAN specification radio access network. It's about trying.

(1) One aspect of the present invention provides computer resource information of at least a DU (Distributed Unit) as a KPI (Key Performance Indicator) of a node included in a base station functional arrangement of an O-RAN specification radio access network, and an O1 interface. The present invention is a base station function allocation control device comprising: a KPI acquisition unit that acquires KPI information via the DU; and a control unit that determines base station function allocation of the radio access network based on at least computer resource information of DU.
(2) One aspect of the present invention is the base station function allocation control device according to (1) above, wherein the computer resource information is information including a resource usage rate of the virtual calculation resource allocated to the function of the DU. It is.
(3) One aspect of the present invention is the above (1) or (2), wherein the computer resource information is information including a resource usage rate of the function with respect to computer resources possessed by the server on which the DU function is activated. This is one of the base station function allocation control devices.

(4) One aspect of the present invention is that the base station function allocation control device uses at least a DU (Distributed Unit) as a KPI (Key Performance Indicator) of a node included in the base station function allocation of a radio access network based on O-RAN specifications. a KPI acquisition step of acquiring computer resource information via an O1 interface; and a control step of the base station function allocation control device determining a base station function allocation of the radio access network based on at least the computer resource information of DU. This is a base station function allocation control method including the following.

(5) One aspect of the present invention is to provide a computer of a base station function allocation control device with at least a DU (Distributed Unit ) A computer for executing a KPI acquisition step of acquiring computer resource information of DU via an O1 interface, and a control step of determining a base station functional arrangement of the radio access network based on at least the computer resource information of DU. It is a program.

According to the present invention, it is possible to obtain the effect that base station functional arrangement can be determined based on information on computer resources regarding DU in an O-RAN specification radio access network.

FIG. 1 is a block diagram illustrating a configuration example of a radio access network (RAN) according to an embodiment. FIG. 2 is an explanatory diagram illustrating an example of a base station functional arrangement of RAN according to an embodiment. FIG. 2 is a block diagram illustrating a configuration example of a base station function allocation control unit according to an embodiment. 1 is a flowchart of a schematic procedure of a base station function allocation control method according to an embodiment. FIG. 2 is a sequence diagram illustrating an example of a detailed procedure of a base station function allocation control method according to an embodiment. FIG. 3 is a diagram illustrating an example of defining parameters according to an embodiment. FIG. 2 is an explanatory diagram of an example of a method for determining base station function allocation according to an embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram illustrating a configuration example of a radio access network according to an embodiment. A radio access network (RAN) 1 shown in FIG. 1 is a RAN to which a RAN slicing technique is applied. Also, O-RAN specifications are applied to RAN1. However, in this embodiment, in the RAN1, a "configuration for acquiring computer resource information related to DU", which is not specified in the O-RAN specifications, is newly added. Additionally, a new "configuration for changing the base station functional arrangement" that is not specified in the O-RAN specifications will be added.

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 the RUs forming a single cell. The first example “O-RAN slice subnet #1” is a C-RAN (Centralized-RAN) arrangement, and both vCUs and vDUs are arranged in the accommodation station. Although the C-RAN arrangement allows inter-cell cooperation, it has the characteristic that it requires a large bandwidth for the transmission path. The second example “O-RAN slice subnet #2” and the third example “O-RAN slice subnet #3” are S-RAN (Split-RAN) deployments in which vDUs are deployed at the antenna site and A vCU is placed in the accommodation station. Although the S-RAN arrangement does not allow inter-cell cooperation, it has the characteristic 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 where both vCU and vDU are located at the antenna site. Placed. Although the D-RAN arrangement does not allow inter-cell coordination, it is characterized by low communication delay.

As illustrated in FIG. 2, in RAN1, by connecting multiple sets of vCUs and vDUs to RUs forming a single cell, a base station with multiple different characteristics for a single cell. It is possible to realize slicing of functional layout. This makes it possible for the RAN 1 to provide wireless communication services with a plurality of different characteristics in a single cell, and to adapt to various communication qualities required by a wide variety of services.

In FIG. 1, the RAN 1 includes an SMO (Service and Management Orchestration) function unit 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 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 function allocation control unit 20 is realized using a "Non-RT RIC" 12. Further, the SMO function unit 11 and the “Non-RT RIC” 12 are realized using the SMO framework 10. The base station function group 2, as illustrated in FIG. 2, is composed of RU, vCU, and vDU.

The SMO framework 10 provides the O1 interface defined in the O-RAN specification. The "Non-RT RIC" 12 acquires KPI (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 R1 interface.

In this embodiment, for the R1 interface between the SMO function unit 11 and the “Non-RT RIC” 12, the “Non-RT RIC” 12 is configured to acquire base station function allocation information from the SMO function unit 11. Add a new message A. The base station functional arrangement information is information indicating the current base station functional arrangement in the RAN1. The SMO function unit 11 transmits a message A containing base station function allocation information to the "Non-RT RIC" 12 via the R1 interface. The base station function allocation control unit 20 acquires base station function allocation information from the message A sent from the SMO function unit 11.

Furthermore, in this embodiment, base station function configuration setting information is newly included in the existing message B that the "Non-RT RIC" 12 transmits to the SMO function unit 11 via the R1 interface. The base station functional layout setting information is information indicating the content of change in the base station functional layout for changing the base station functional layout in the RAN1. The base station function allocation control unit 20 includes base station function allocation setting information in the message B sent from the "Non-RT RIC" 12. The SMO function unit 11 receives message B including base station function configuration information through the R1 interface. The SMO function unit 11 acquires base station function configuration information from message B received through the R1 interface.

Further, in this embodiment, a new provision for acquiring computer resource information of DU is provided for the O1 interface. Thereby, the "Non-RT RIC" 12 acquires the computer resource information of the DU from the base station function group 2 through the O1 interface.

FIG. 3 is a block diagram showing a configuration example of the base station function allocation control section 20 according to the present embodiment. In FIG. 3, the base station function allocation control unit 20 includes a base station function allocation information acquisition unit 201, a base station function allocation information storage unit 202, a KPI acquisition unit 203, a base station function allocation setting information transmission unit 204, A control unit 205 is provided.

The base station function allocation information acquisition unit 201 acquires base station function allocation information via the interface with the SMO function unit 11. The interface is an R1 interface as an example of this embodiment. More specifically, the base station function allocation information acquisition unit 201 acquires base station function allocation information from the message A sent from the SMO function unit 11 through the R1 interface.

The base station functional layout information storage section 202 stores the base station functional layout information acquired by the base station functional layout information acquisition section 201.

The KPI acquisition unit 203 acquires the KPI from the base station function group 2 via the O1 interface. The KPI acquisition unit 203 acquires at least computer resource information of DU as a KPI of each node included in the base station function group 2 via the O1 interface. For example, the KPI acquisition unit 203 acquires DU computer resource information and CU computer resource information via the O1 interface as the KPI of each node included in the base station function group 2.

The base station function allocation setting information transmitting unit 204 transmits base station function allocation setting information via the interface with the SMO function unit 11. The interface is an R1 interface as an example of this embodiment. More specifically, the base station function configuration information transmitting unit 204 transmits message B including base station function configuration information through the R1 interface.

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 determines the next base station functional arrangement based on at least the computer resource information of the DU. For example, the control unit 205 determines the next base station functional arrangement based on the computer resource information of the DU and the computer resource information of the CU.

The functions of each part of the base station function allocation control unit 20 are realized by the CPU executing a computer program for realizing the functions of each part.

Next, the overall procedure of the base station function allocation control method according to this embodiment will be explained with reference to FIG. FIG. 4 is a flowchart of a schematic procedure of the base station function allocation control method according to the present embodiment.

(Step S1) After starting up the base station function group 2, the SMO function unit 11 performs initial settings for the base station function group 2.

(Step S2) After completing the initial settings of the base station function group 2, the base station function allocation control unit 20 (base station function allocation information acquisition unit 201) determines the base station function allocation from the message A sent from the SMO function unit 11. Get information. The base station function allocation control unit 20 (base station function allocation information storage unit 202) stores the base station function allocation information.

(Step S3) The base station function allocation control unit 20 (KPI acquisition unit 203) acquires KPI from the base station function group 2 via the O1 interface. At this time, the KPI acquisition unit 203 acquires at least the computer resource information of DU as the KPI of each node included in the base station function group 2 via the O1 interface. For example, the KPI acquisition unit 203 acquires DU computer resource information and CU computer resource information via the O1 interface as the KPI of each node included in the base station function group 2.

The base station function allocation control unit 20 (control unit 205) determines the next base station function allocation based on the KPI acquired by the KPI acquisition unit 203. At this time, the control unit 205 determines the next base station functional arrangement based on at least the computer resource information of the DU. For example, the control unit 205 determines the next base station functional arrangement based on the computer resource information of the DU and the computer resource information of the CU.

(Step S4) The base station function allocation control unit 20 (control unit 205) generates base station function allocation setting information regarding the determined next base station function allocation. The base station function allocation setting information is information indicating the change content of the base station function allocation for changing the base station function allocation in RAN1 to the next base station function allocation.

(Step S5) The base station function allocation control unit 20 (base station function allocation setting information transmission unit 204) transmits message B containing the base station function allocation setting information generated by the control unit 205 to the SMO function unit 11.

(Step S6) The SMO function unit 11 executes settings to change the base station function layout of the base station function group 2 based on the base station function layout setting information included in the message B.

(Step S7) After completing the settings for changing the base station function layout of the base station function group 2, the base station function allocation control unit 20 (base station function allocation information acquisition unit 201) receives the message sent from the SMO function unit 11. Obtain base station function allocation information from A. The base station function allocation control unit 20 (base station function allocation information storage unit 202) stores the base station function allocation information as the latest base station function allocation information.

Next, detailed procedures of the base station function allocation control method according to this embodiment will be explained with reference to FIG. FIG. 5 is a sequence diagram showing an example of a detailed procedure of the base station function allocation control method according to the present embodiment.

First, steps S101 to S105 are executed as a base station function start-up sequence. This base station function startup sequence is based on the O-RAN specification "Instantiate Network Function on O-Cloud (O-RAN.WG6.ORCH-USE-CASES-v01.00)."

(Step S101) "Network Function install project Mgr" sends a "Service Request" message to "O-Cloud M&O".

(Step S102) Next, "O-Cloud M&O" sends a "Create workload" message to "DMS" via the O2 interface.

(Step S103) Next, the "DMS" transmits a "Deploy NF" message to each node (O-CU, O-DU1, O-DUN) of the base station function group 2.

(Step S104) Next, "DMS" sends a "Notify workload created" message to "O-Cloud M&O" via the O2 interface.

(Step S105) Next, 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.

The above is the start-up sequence of the base station function.

(Step S106) Next, the SMO function unit 11 transmits message A including base station function configuration information to the "Non-RT RIC" 12 via the R1 interface. The base station function allocation control unit 20 acquires base station function allocation information from the message A.

(Step S107) Next, the base station function allocation control unit 20 receives a "Performance measurements" message from each node (O-CU, O-DU1, O-DUN) of the base station function group 2 through the O1 interface. The base station function allocation control unit 20 acquires the KPI from the "Performance measurements" message.
At this time, the "Performance measurements" message transmitted by the DU (O-DU1, O-DUN) among the nodes of the base station function group 2 is a message that includes at least the computer resource information of the DU. Thereby, the base station function allocation control unit 20 acquires at least the computer resource information of the DU from the "Performance measurements" message transmitted by the DU (O-DU1, O-DUN) among the nodes of the base station function group 2. .

Furthermore, the “Performance measurements” message transmitted by the CU (O-CU) among the nodes of the base station function group 2 may be a message including computer resource information of the CU. Thereby, the base station function allocation control unit 20 may acquire the computer resource information of the CU from the “Performance measurements” message transmitted by the CU (O-CU) among the nodes of the base station function group 2.

For example, the base station function allocation control unit 20 obtains at least the computer resource information of the DU from the "Performance measurements" message transmitted by the DU (O-DU1, O-DUN) among the nodes of the base station function group 2, At least the computer resource information of the CU is acquired from the "Performance measurements" message sent by the CU (O-CU).

Note that the KPIs that the base station function allocation control unit 20 acquires from the base station function group 2 include, for example, the throughput of each service, the utilization rate of radio resources, the utilization rate of computer resources, the utilization rate of transmission path bandwidth, etc. It may be.

(Step S108) Next, the base station function allocation control unit 20 determines the next base station function allocation based on the KPI acquired from the "Performance measurements" message. At this time, the base station function allocation control unit 20 determines the next base station function allocation based on at least the computer resource information of the DU. For example, the base station function allocation control unit 20 determines the next base station function allocation based on the computer resource information of the DU and the computer resource information of the CU. The base station function allocation control unit 20 generates base station function allocation setting information regarding the determined next base station function allocation.

Next, steps S109 to S110 are executed as a base station function setting change sequence. This base station function configuration change sequence is based on the O-RAN specification “Reconfiguration of O-RAN Virtual Network Function(s) (O-RAN.WG6.ORCH-USE-CASES-v01.00)” .

(Step S109) The base station function allocation control unit 20 transmits the “Reconfig NF set” message including the base station function allocation setting information generated in step S108 to the SMO function unit 11 via the R1 interface. The "Reconfig NF set" message corresponds to the existing message B. The SMO function unit 11 acquires base station function layout setting information from the "Reconfig NF set" message received through the R1 interface.

(Step S110) 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 arrangement indicated in the base station functional arrangement setting information acquired in step S109. Thereby, the base station functional arrangement of base station functional group 2 is changed to the next base station functional arrangement.

FIG. 6 is a diagram showing an example of defining parameters according to this embodiment. FIG. 6 shows new parameters (underlined portions in FIG. 6) 301, 302, and 303 added to the parameters defined in Non-Patent Document 2 as parameters that can be collected by the O1 interface. “GNBDUFunction” of the new parameter 301 is a parameter for acquiring “Mean virtual CPU usage” from among the computer resource information of DU. The new parameter 302 "GNBDUFunction" is a parameter for acquiring "Mean virtual memory usage" from among the computer resource information of DU. The new parameter 303 "GNBDUFunction" is a parameter for acquiring "Mean virtual disk usage" from among the computer resource information of DU.

A specific example of DU computer resource information is shown below.

(Example 1 of DU computer resource information)
Example 1 of the computer resource information of the DU is the resource usage rate of the function of the DU with respect to the virtual calculation resources allocated to the function. Specifically, "Mean usage rate for NF in virtual CPU allocated to NF (Unit:%)" regarding the CPU, "Mean usage rate for NF in virtual memory allocated to NF (Unit:%)" regarding the memory, and "Mean usage rate for NF in virtual memory allocated to NF (Unit:%)" regarding the disk. "Mean usage rate for NF in virtual disk allocated to NF (Unit:%)".

(Example 2 of DU computer resource information)
Example 2 of the DU computer resource information is the resource usage rate of the DU function with respect to the computer resources of the server on which the function is activated. Specifically, "Mean usage rate for NF in physical CPU in a server (Unit: %)" regarding CPU, "Mean usage rate for NF in physical memory in a server (Unit: %)" regarding memory, and "Mean usage rate for NF in physical memory in a server (Unit: %)" regarding disk. "Mean usage rate for NF in physical disk in a server (Unit: %)".

Either one of Examples 1 and 2 of the computer resource information of the DU may be used, or both Examples 1 and 2 may be used. In addition, if both examples 1 and 2 of the computer resource information of the DU are used, should we increase the virtual calculation resources allocated to the DU, or should we change the base station function allocation because the computer resources of the server itself are tight? You can decide whether to change it.

(Example of how to calculate server computer resource usage rate)
The computer resource usage rate us of the server s is expressed by the following equation (1).

I is the set of functions of DUs launched on server s. J is a set of functions of CUs launched on server s.

u'DUi is the resource usage rate (server resource usage rate) of the vDUi function with respect to the computer resources of the server s where the function is activated. u'CUj is the resource usage rate (server resource usage rate) of the function vCUj with respect to the computer resources of the server s where the function is activated.

Further, uDUi is the resource usage rate (virtual resource usage rate) of the function of vDUi with respect to the virtual computing resources allocated to the function. uCUj is the resource usage rate (virtual resource usage rate) of the function vCUj with respect to the virtual computing resources allocated to the function.

Next, an example of the base station function allocation determination method according to this embodiment will be explained with reference to FIG. FIG. 7 is an explanatory diagram of an example of the base station function allocation determination method according to the present embodiment. Here, as an example of the method for determining the base station functional layout, a method for determining the base station functional layout based on the computer resource information of the DU and the computer resource information of the CU will be described.

FIG. 7 shows a graph showing an example of a time series of computer resource information (computer resource usage rate us_a of server s_a) of the antenna site (server s_a) and computer resource information of the accommodation station (server s_b) (computer resource usage rate us_a of server s_b). A graph representing an example of a time series of the resource usage rate us_b) is shown. The computer resource information of the antenna site (computer resource usage rate us_a of server s_a) is calculated from the server resource usage rate of vDU#2, vDU#3, and vCU#3 located at the antenna site using the above formula (1). Ru. The computer resource information of the accommodation station (the computer resource usage rate us_b of the server s_b) is calculated from the server resource usage rate of vDU#1, vCU#1, and vCU#2 arranged in the accommodation station using the above formula (1). Ru.

In the example of FIG. 7, a constraint condition is set so that the computer resource usage rate us of each server does not exceed a threshold value (for example, 0.9), and an optimal solution for the base station function arrangement is determined.

For example, if the computer resources at the antenna site are tight while the computer resources at the accommodation station are available, congestion at the antenna site can be avoided by changing the base station functional arrangement based on the computer resource usage rates us_a and us_b. be able to.

For example, if there is a tight virtual resource usage rate among the virtual resource usage rates of vDU and vCU, and each computer resource usage rate us_a, us_b is below the threshold, the virtual resource usage rate is tight. By increasing the virtual computing resources allocated to the functions (vDU, vCU), it is possible to cope with this problem without changing the base station functional arrangement.

Note that, as a method of searching for an optimal solution for base station function allocation, for example, mathematical programming, machine learning, or the like may be used.

As described above, according to the present embodiment, it is possible to obtain the effect that base station function allocation can be determined based on information on computer resources related to DU in a radio access network (RAN) based on O-RAN specifications.

Furthermore, as this can improve the overall service quality of radio access networks, for example, goal 9 of the Sustainable Development Goals (SDGs) led by the United Nations, ``Build resilient infrastructure and achieve sustainable It will be possible to contribute to "promoting industrialization and expanding innovation."

Although the embodiment of the present invention has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like may be made without departing from the gist of the present invention.

Further, a computer program for realizing the functions of each device described above may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed. Note that the "computer system" here may include hardware such as an OS and peripheral devices.
Furthermore, "computer-readable recording media" refers to flexible disks, magneto-optical disks, ROMs, writable non-volatile memories such as flash memory, portable media such as DVDs (Digital Versatile Discs), and media built into computer systems. A storage device such as a hard disk.

Furthermore, "computer-readable recording medium" refers to volatile memory (for example, DRAM (Dynamic It also includes those that retain programs for a certain period of time, such as Random Access Memory).
Further, the program may be transmitted from a computer system storing the 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" that transmits the program refers to a medium that has 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.
Moreover, the above-mentioned program may be for realizing a part of the above-mentioned functions. Furthermore, 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 placement control unit, 201...Base station function placement Information acquisition unit, 202...Base station function allocation information storage unit, 203...KPI acquisition unit, 204...Base station function allocation setting information transmission unit, 205...Control unit

Claims (5)

a KPI acquisition unit that acquires computer resource information of at least a DU (Distributed Unit) as a KPI (Key Performance Indicator) of a node included in a base station functional arrangement of a radio access network with O-RAN specifications, via an O1 interface;
a control unit that determines a base station functional arrangement of the radio access network based on at least computer resource information of DU;
A base station function allocation control device comprising: The computer resource information is information including a resource usage rate of the function with respect to virtual calculation resources allocated to the function of the DU,
The base station function allocation control device according to claim 1. The computer resource information is information including a resource usage rate of the function of the DU with respect to computer resources possessed by the server on which the function is activated.
The base station function allocation control device according to claim 1 or 2. A base station function allocation control device transmits computer resource information of at least a DU (Distributed Unit) as a KPI (Key Performance Indicator) of a node included in a base station function allocation of an O-RAN specification radio access network via an O1 interface. A KPI acquisition step to be acquired;
a control step in which the base station function allocation control device determines a base station function allocation of the radio access network based on at least computer resource information of DU;
A base station function allocation control method including: In the computer of the base station function allocation control device,
a KPI acquisition step of acquiring computer resource information of at least a DU (Distributed Unit) as a KPI (Key Performance Indicator) of a node included in a base station functional arrangement of a radio access network with O-RAN specifications, via an O1 interface;
a control step of determining a base station functional arrangement of the radio access network based on at least computer resource information of DU;
A computer program for running.

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