JP2020025210A - Resource allocation device and resource allocation method - Google Patents

Abstract

To improve resource utilization efficiency of the entire network by effectively utilizing a surplus of radio resources while securing the number of resources allocated by "resource isolation" which is a feature of a network slice.SOLUTION: In a communication system 1, a base station 20 (resource allocation device) for performing resource allocation of a radio access network, includes: an information acquisition unit 21 for acquiring service request conditions for each slice, use service information relating to services used by a terminal, and location information and communication state information of the terminal; a determination unit 22 for determining the number of allocated resources for each slice on the basis of the obtained information; a determination unit 23 for determining whether there is a slice without a communicating terminal from the number of communicating terminals for each slice; and a resource allocation unit 24 for controlling resource allocation so that the number of resources allocated (surplus) of the slice is allocated to a slice that has a terminal in communication when there is a slice that has no terminal in communication.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a resource allocating apparatus and a resource allocating method for allocating resources in a radio access network (Radio Access Network: (hereinafter referred to as “RAN”)).

  In this specification, “service” or “network service” refers to, for example, a network resource such as a communication service (dedicated line service or the like) and an application service (video distribution, a service using a sensor device such as an embedded device). Means a service processed using. A “slice” or “network slice” is a virtual network logically created on a network infrastructure, and the service is allocated to a slice, and is processed using network resources of the allocated slice.

  As a resource allocation method in the conventional RAN, a method based on PF (Proportional Fairness) is known (see Patent Document 1). In this method, the ratio between the instantaneous throughput of each user and the average throughput in a certain section is calculated and compared with each other, and resources are allocated in descending order of the ratio. As the above “throughput”, for example, a signal-to-interference plus noise power ratio (received SINR) at a terminal is used.

JP 2013-229727 A

  On the other hand, a slicing technique for separating a virtual network resource for each service and guaranteeing a resource allocation amount is known. However, application of the above slicing technology to resources in the RAN has not been studied much yet. For example, there is not enough study on the case where the number of users who use the radio resources is small and the traffic is in a low traffic state and a surplus of the radio resources is generated, and there is a possibility that the resource utilization efficiency of the entire network is reduced.

  The present invention has been made in view of the above, and secures the number of resources to be allocated by “resource isolation” which is a characteristic of a network slice, and makes effective use of surplus radio resources to utilize resources throughout the network. The aim is to improve efficiency.

  In order to achieve the above object, a resource allocating apparatus according to an aspect of the present invention is a resource allocating apparatus for allocating resources in a radio access network, comprising: a service request condition set for each slice; Based on the service request information, and the information acquisition unit for acquiring the location information and communication state information of the terminal, based on the service request conditions acquired by the information acquisition unit, the use service information and the location information, A determination unit that determines the number of resources allocated to each slice according to the service request condition, and based on the communication state information of the terminal obtained by the information obtaining unit, confirms the number of communicating terminals for each slice, A determining unit that determines whether there is a slice that does not have a terminal that is communicating, and a terminal that is communicating by the determining unit When it is determined that there is a current slice, the resource allocation control unit determines the number of resource allocations for the slice without the communicating terminal determined by the determination unit, and allocates the resource to the slice with the communicating terminal. And an assignment unit.

  In the above resource allocation device, the information acquisition unit acquires the service request condition set for each slice, the use service information on the service used by the terminal, and the location information and communication state information of the terminal, and the determination unit Determining the number of resources allocated to each slice corresponding to the service request condition based on the obtained service request condition, the used service information and the location information, and determining the resource allocation number based on the obtained terminal communication state information. Then, the number of communicating terminals for each slice is confirmed, and it is determined whether or not there is a slice having no communicating terminal. Here, when it is determined that there is a slice without a communicating terminal, the resource allocating unit allocates the determined resource allocation number for the slice without a communicating terminal to a slice with a communicating terminal. Control the resource allocation. As described above, it is determined whether there is a slice without a communicating terminal, and when it is determined that there is a slice without a communicating terminal, the resource allocation number for the slice without a communicating terminal ( The resource allocation is controlled such that the surplus resource allocation number) is allocated to a slice in which the communicating terminal is located. As a result, while securing the number of resources to be allocated by “resource isolation”, which is a feature of the network slice, the surplus radio resources can be effectively used to improve the resource use efficiency of the entire network.

  ADVANTAGE OF THE INVENTION According to this invention, the resource utilization efficiency in the whole network can be improved by making effective use of the surplus radio resources while securing the number of resources allocated by "resource isolation" which is a feature of the network slice.

FIG. 1 is a configuration diagram of a communication system according to an embodiment of the present invention. (A) is a figure showing an example of data of an information holding table, and (b) is a figure showing an example of data of an allocation RB number table. FIG. 3 is a diagram showing a processing sequence executed in the communication system. FIG. 9 is a flowchart illustrating a first processing example executed by the base station. FIG. 11 is a flowchart illustrating a second processing example executed by the base station. FIG. 3 is a diagram illustrating a hardware configuration example of a base station.

  Hereinafter, an embodiment for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a configuration of a communication system 1 according to the present embodiment. As shown in FIG. 1, a communication system 1 according to the present embodiment includes a terminal (User Equipment) 10, a base station 20, and a policy control function (hereinafter referred to as “PCF”) 30. This is a system that provides a network service to the terminal 10 using data communication.

  The communication system 1 provides a network service to the terminal 10 by allocating a service to a slice that is a virtual network logically created on the network infrastructure. More specifically, the above-mentioned slice is a virtual network or service network logically generated on the combined resources by virtually separating the resources of the network and combining the separated resources. Do not interfere with each other because the resources are separated. In the present embodiment, “RB”, which is an abbreviation for Resource Block, is used as a resource name.

  Hereinafter, each component of the communication system 1 will be outlined in order.

  The terminal 10 is a terminal used by a terminal user, and includes, for example, all portable terminals such as a smartphone and a tablet terminal.

  The PCF 30 is a device that comprehensively manages a resource allocation policy of a radio access network in the communication system 1 and receives information such as a request condition of each service and a traffic model input from a network manager or the like, and The information is held in the information holding table 40 shown in FIG. The information of the information holding table 40 is held by the PCF 30, is also notified to an information acquisition unit 21 of the base station 20, which will be described later, and is also held in the base station 20.

  The base station 20 is a device that manages the location information and the like of the terminal 10 in the RAN, and corresponds to, for example, an eNodeB (evolved Node B) that is a wireless base station that supports LTE (Long Term Evolution) wireless communication. I do. In the present embodiment, the resource allocation device according to the present invention is configured by the base station 20, and the base station 20 includes, as functional units as the resource allocation device according to the present invention, an information acquisition unit 21, a determination unit 22, and a determination unit 23. And a resource allocating unit 24.

  Among the above function units, the information acquisition unit 21 acquires service request conditions set for each slice, use service information on services used by the terminal 10, and information on the location and communication status of the terminal 10. The deciding unit 22 decides the resource allocation number for each slice according to the service request condition, based on the acquired service request condition, used service information, and location information. The determination unit 23 confirms the number of communicating terminals (hereinafter, referred to as “the number of active users”) for each slice based on the acquired communication state information of the terminal 10, and determines that there is no slice without a communicating terminal (active user). It is determined whether or not there is.

  When it is determined that there is a slice having no active user, the resource allocating unit 24 controls the resource allocation so that the number of resource allocations for the slice having no active user is allocated to the slice having the active user. Although the details of the resource allocation control will be described later, the resources (RBs) may be allocated fairly to the slice in which the active user is located, may be allocated based on the priority of the slice, or may be obtained by another method. May be assigned. As a specific processing procedure, the resource allocating unit 24 corrects the resource allocation number for each slice so as to allocate the resource allocation number for the slice having no active user to the slice having the active user, and Resource allocation may be performed based on the number of allocated resources for each and a predetermined allocation method. When it is determined that there is no slice without an active user, the resource allocating unit 24 allocates resources based on the resource allocation number for each slice determined by the determining unit 22.

  The number of allocated RBs for each slice determined by the determining unit 22 and the related information are held in an allocated RB number table 50 of FIG. 2B described later, and are referenced and corrected by the resource allocating unit 24. You.

  Although not shown in FIG. 1, the communication system 1 is provided with devices such as an AMF (Access and Mobility management Function) for managing access management and mobility management, and an SMF (Session Management Function) for managing session management. ing. However, since it is not directly related to the present invention, the description of the above-described device is omitted in FIG.

  FIG. 2A shows an example of data in the information holding table 40 held by the PCF 30 and the information acquisition unit 21. As shown in FIG. 2A, the information holding table 40 includes, for example, information related to the priority, the slice name, the service name corresponding to the slice, the data amount, and the arrival interval, which are set in advance for each slice. Information such as a traffic model, an allowable delay amount, and an allowable packet loss rate is held.

  FIG. 2B shows an example of data of the allocation RB number table 50 that holds the allocation RB number for each slice determined by the determination unit 22 and the related information. As shown in FIG. 2B, for example, the priority RB, the slice name, the service name corresponding to the slice, the data flow rate in the slice, the number of terminals belonging to the slice, and the allowable Information such as the amount of delay to be performed, the allowable packet loss rate, and the determined number of allocated RBs is held.

  Hereinafter, an outline of processing executed in the communication system 1 of FIG. 1 will be described with reference to FIGS. 3 to 5. As shown in FIG. 3, information such as the required conditions of each service and the traffic model is input to the PCF 30 from a network administrator or the like (step S1), and the PCF 30 receives the input information and proceeds to FIG. The information is held in the indicated information holding table 40 (step S2). Thereafter, the information in the information holding table 40 is notified from the PCF 30 to the base station 20 (step S3), and the terminal's belonging slice information and the like are notified from the terminal 10 to the base station 20 (step S4). The base station 20 acquires the information notified in steps S3 and S4 (step S5). As a result, the base station 20 holds the information held in the information holding table 40 shown in FIG.

  Next, the base station 20 determines the number of allocated RBs for each slice based on, for example, the required conditions of each service related to the slice, the data flow rate for each slice, the number of terminals, and the like. And the related information are stored in the allocated RB number table 50 shown in FIG. 2B (step S6).

  Next, the processing illustrated in FIGS. 4 and 5 is executed by the determination unit 23 and the resource allocation unit 24 in the base station 20 (Step S7). In the first process shown in FIG. 4, when it is determined that there is a slice without an active user, the control to fairly allocate the resource allocation number for the slice without the active user to the slice with the active user is performed. In the second process shown in FIG. 5, when it is determined that there is a slice having no active user, the active user determines the resource allocation number (surplus RB number) for the slice without the active user. This is to control the allocation to a certain slice in accordance with the slice priority. Details of the first and second processes will be described later.

  When RBs are allocated to slices having active users by the processing in step S7, data communication is performed between the base station 20 and each terminal 10 thereafter (step S8).

  Hereinafter, the first processing shown in FIG. 4 and the second processing shown in FIG. 5 will be sequentially described.

  In the first process shown in FIG. 4, the determination unit 23 specifies terminals belonging to each slice from the slice information of the terminals, and determines whether there is a slice having no active user based on the communication status of those terminals. (Step S11). Here, when it is determined that there is no slice having no active user, the resource allocation unit 24 refers to the allocation RB number table 50 and determines the allocation RB number determined in step S6 in FIG. To perform radio resource control (step S12). The control method may be a so-called fair allocation method (method 1) or a so-called priority allocation method (method 2).

  On the other hand, when it is determined in step S11 that there is a slice having no active user, the resource allocation unit 24 refers to the allocation RB number table 50, and totals the number of RBs allocated to the slice having no active user (the number of surplus RBs). Then, the number of additional RBs for each slice is calculated so that the number of slices having active users is fair (step S14). As an example, the number of additional RBs (the number of additional RBs per slice) may be calculated by dividing the number of surplus RBs by the number of slices without an active user. Further, the resource allocating unit 24 corrects the number of allocated RBs to the slice having the active user by using the number of allocated RBs obtained by adding the number of additional RBs to the number of allocated RBs determined by the determining unit 22. (Step S15), radio resource control is performed using the corrected number of allocated RBs (the number of allocated RBs after addition) (Step S16).

  By such a first process, it is determined whether or not there is a slice without an active user. If there is a slice without an active user, the active user determines the number of allocated RBs (the number of surplus RBs) for the slice. Resource allocation control is performed so that a certain slice is allocated fairly. As a result, the number of RBs allocated by “resource isolation”, which is a feature of the network slice, is secured, and the surplus RBs can be effectively used to improve the resource utilization efficiency of the entire network.

  In the second process illustrated in FIG. 5, the determination unit 23 determines whether there is a slice having no active user, as in step S11 in FIG. 4 (step S21). Here, when it is determined that there is no slice having no active user, the resource allocation unit 24 determines the number of allocated RBs determined in step S6 in FIG. 3 similarly to step S12 in FIG. To perform radio resource control (step S22).

  On the other hand, when it is determined in step S21 that there is a slice having no active user, the resource allocating unit 24 totals the number of RBs (the number of surplus RBs) allocated to the slice having no active user (step S23). The number of RBs allocated to each slice is corrected so that a surplus RB is additionally allocated to a certain slice in accordance with the slice priority (step S24), and the corrected RB number is used in accordance with the priority allocation scheme. Radio resource control is performed (step S25). In step S25, for example, the resource allocation unit 24 allocates a resource (RB) to a terminal belonging to a slice having the highest priority among slices having active users, and allocates the resource (RB) to all terminals belonging to the slice. If there is a surplus RB at the end of the process, the RB is allocated to the terminal belonging to the slice having the second highest priority among the slices having the active user. If there is a surplus RB at the time when allocation to all the terminals belonging to the slice having the second highest priority is completed, the terminal belonging to the slice having the third highest priority among the slices having the active user RBs are assigned. As described above, the assignment to the terminal belonging to each slice is repeatedly executed in the order of higher priority in the slice where the active user exists. However, it is not limited to the above method.

  By such a second process, it is determined whether or not there is a slice without an active user. If there is a slice without an active user, the active user determines the number of allocated RBs (the number of surplus RBs) for the slice. Priority assignment control is performed so that a given slice is assigned based on the slice priority. As a result, the number of RBs allocated by “resource isolation”, which is a feature of the network slice, is secured, and the surplus RBs can be effectively used to improve the resource utilization efficiency of the entire network.

  According to the above-described embodiment of the present invention, whether any of the first processing according to the fair allocation scheme and the second processing according to the priority allocation scheme is employed, the presence or absence of a slice having no active user (ie, If there is a surplus RB number, the surplus RB number can be used effectively in the slice where the active user exists, so that the number of RBs allocated by “resource isolation” which is a characteristic of the network slice is secured. At the same time, it is possible to improve the resource utilization efficiency of the entire network by effectively utilizing the number of surplus RBs.

  In the above embodiment, the first processing (FIG. 4) relating to the fair allocation scheme and the second processing (FIG. 5) relating to the priority allocation scheme have been exemplified. The processing according to various methods such as the method described above may be executed.

  Further, in the above embodiment, an example has been described in which the resource allocation device according to the present invention is configured by a base station in a RAN. However, this is not an essential requirement, and the resource allocation device according to the present invention is different from a base station other than the base station. May be constituted by the above-mentioned device. In the case where the resource allocation device according to the present invention is configured by another device other than the base station as described above, for example, the base station provides information necessary for resource allocation to the other device and performs resource allocation processing. Is indicated (or requested).

  The type of the network of the communication system 1 is not particularly limited, and may be, for example, an EPC (Evolved Packet Core) network or a so-called Next Generation Network (NGN). .

  The block diagram used in the description of the above embodiment shows a block of a functional unit. These functional blocks (components) are realized by an arbitrary combination of hardware and / or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be realized by one device physically and / or logically coupled, or two or more devices physically and / or logically separated from each other directly and / or indirectly. (For example, wired and / or wireless) and may be realized by these multiple devices.

  For example, the base station 20 in the above embodiment may function as a computer that performs the processing of the base station 20 described above. FIG. 6 is a diagram illustrating an example of a hardware configuration of the base station 20. The above-described base station 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. Note that devices other than the base station 20 in FIG. 1 may have the same configuration as the base station 20. Hereinafter, the base station 20 will be described as an example.

  In the following description, the term “apparatus” can be read as a circuit, a device, a unit, or the like. The hardware configuration of the base station 20 may be configured to include one or more devices shown in the drawing, or may be configured not to include some devices.

  The functions of the base station 20 are performed by reading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs an operation, and the communication by the communication device 1004, the communication in the memory 1002, and the storage 1003. It is realized by controlling reading and / or writing of data.

  The processor 1001 controls the entire computer by operating an operating system, for example. The processor 1001 may be configured by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like. For example, each functional unit of the base station 20 may be realized including the processor 1001.

  In addition, the processor 1001 reads a program (program code), a software module, and data from the storage 1003 and / or the communication device 1004 to the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operation described in the above embodiment is used. For example, each functional unit of the base station 20 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and other functional blocks may be similarly realized. Although it has been described that the various processes described above are executed by one processor 1001, the processes may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be implemented with one or more chips. Note that the program may be transmitted from a network via a telecommunication line.

  The memory 1002 is a computer-readable recording medium, and includes, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done. The memory 1002 may be called a register, a cache, a main memory (main storage device), or the like. The memory 1002 can store a program (program code), a software module, and the like that can be executed to perform the method according to an embodiment of the present invention.

  The storage 1003 is a computer-readable recording medium such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, and a magneto-optical disk (eg, a compact disk, a digital versatile disk, a Blu-ray). (Registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, and a magnetic strip. The storage 1003 may be called an auxiliary storage device. The storage medium described above may be, for example, a database including the memory 1002 and / or the storage 1003, a server, or any other suitable medium.

  The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, each functional unit of the base station 20 described above may be realized including the communication device 1004.

  The input device 1005 is an input device that receives an external input (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like). The output device 1006 is an output device that performs output to the outside (for example, a display, a speaker, an LED lamp, and the like). Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

  Each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured by a single bus, or may be configured by a different bus between the devices.

  The base station 20 includes hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). The hardware may implement some or all of the functional blocks. For example, the processor 1001 may be implemented by at least one of these hardware.

  Although the present embodiment has been described in detail above, it is obvious to those skilled in the art that the present embodiment is not limited to the embodiment described in this specification. This embodiment can be implemented as a modified or changed embodiment without departing from the spirit and scope of the present invention defined by the description of the claims. Therefore, the description in this specification is for the purpose of illustration and description, and does not have any restrictive meaning to the present embodiment.

  The processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in this specification may be interchanged as long as there is no inconsistency. For example, the methods described herein present elements of various steps in a sample order, and are not limited to the specific order presented.

  The input and output information and the like may be stored in a specific place (for example, a memory) or may be managed by a management table. Information to be input and output can be overwritten, updated, or added. The output information or the like may be deleted. The input information or the like may be transmitted to another device.

  The determination may be made based on a value (0 or 1) represented by one bit, a Boolean value (Boolean: true or false), or a comparison of numerical values (for example, a predetermined value). Value).

  Each aspect / embodiment described in this specification may be used alone, may be used in combination, or may be switched as the execution goes on. Further, the notification of the predetermined information (for example, the notification of “X”) is not limited to being explicitly performed, and is performed implicitly (for example, not performing the notification of the predetermined information). Is also good.

  Software, regardless of whether it is called software, firmware, middleware, microcode, a hardware description language, or any other name, instructions, instruction sets, codes, code segments, program codes, programs, subprograms, software modules , Applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.

  Also, software, instructions, and the like may be transmitted and received via a transmission medium. For example, if the software uses a wired technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or a wireless technology such as infrared, wireless and microwave, the website, server, or other When transmitted from a remote source, these wired and / or wireless technologies are included within the definition of transmission medium.

  The information, signals, etc. described herein may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., that can be referred to throughout the above description are not limited to voltages, currents, electromagnetic waves, magnetic or magnetic particles, optical or photons, or any May be represented by a combination of

  In addition, the information, parameters, and the like described in this specification may be represented by an absolute value, may be represented by a relative value from a predetermined value, or may be represented by another corresponding information. .

  A mobile communication terminal is provided by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, It may also be called a wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

  The terms "determining" and "determining" as used herein may encompass a wide variety of operations. “Judgment” and “decision” are, for example, judgment (judging), calculation (computing), calculation (computing), processing (processing), derivation (deriving), investigating (investigating), searching (looking up) (for example, table , Searching in a database or another data structure), ascertaining what is considered as "determining", "determining", and the like. Also, “determining” and “deciding” include receiving (eg, receiving information), transmitting (eg, transmitting information), input (input), output (output), and access. (accessing) (for example, accessing data in a memory) may be regarded as “determined” or “determined”. In addition, `` judgment '' and `` decision '' means that resolving, selecting, selecting, establishing, establishing, comparing, etc. are regarded as `` judgment '' and `` decided ''. May be included. In other words, “judgment” and “decision” may include deeming any operation as “judgment” and “determined”.

  The phrase "based on" as used herein does not mean "based solely on" unless stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

  As long as “include”, “including”, and variations thereof, are used in the present description or claims, these terms are equivalent to the term “comprising” It is intended to be comprehensive. Further, the term "or" as used in the present specification and claims is not intended to be an exclusive OR.

  In this specification, a plurality of devices is also included unless the device is clearly and only one is present in context or technically. Throughout this disclosure, the singular may include the plural unless the context clearly dictates otherwise.

  DESCRIPTION OF SYMBOLS 1 ... Communication system, 10 ... Terminal, 20 ... Base station, 21 ... Information acquisition part, 22 ... Determination part, 23 ... Judgment part, 24 ... Resource allocation part, 30 ... PCF, 40 ... Information holding table, 50 ... Assigned RB Number table, 1001 processor, 1002 memory, 1003 storage, 1004 communication device, 1005 input device, 1006 output device, 1007 bus.

Claims (6)

A resource allocation device for allocating resources in a radio access network,
A service request condition set for each slice, use service information on a service used by the terminal, and an information acquisition unit for acquiring the area information and the communication state information of the terminal;
A determining unit that determines a resource allocation number for each slice according to the service request condition, based on the service request condition acquired by the information acquisition unit, the use service information and the location information;
Based on the communication state information of the terminal obtained by the information obtaining unit, based on the number of communicating terminals for each slice, a determining unit that determines whether there is a slice without a communicating terminal,
When the determining unit determines that there is a slice having no communicating terminal, the resource allocation number for the slice having no communicating terminal determined by the determining unit is allocated to the slice having the communicating terminal. A resource allocating unit that controls resource allocation,
A resource allocation device comprising: If it is determined by the determination unit that there is a slice without a terminal in communication, the resource allocating unit, the number of resources allocated to the slice without a terminal in communication, fair to the slice in which there is a terminal in communication Control resource allocation as if to allocate,
The resource allocation device according to claim 1. When it is determined by the determination unit that there is a slice without a terminal in communication, the resource allocating unit, the resource allocation number for the slice without the terminal in communication, the slice in which there is a terminal in communication, Controlling the resource allocation to allocate based on the priority of the slice included in the service requirement,
The resource allocation device according to claim 1. The resource allocation unit, when it is determined that there is no slice without a terminal in communication by the determination unit, performs resource allocation based on the number of resources allocated for each slice determined by the determination unit,
The resource allocation device according to claim 1. The resource allocation device,
Constituted by a base station in the radio access network,
The resource allocation device according to claim 1. A resource allocation method executed by a resource allocation device for performing resource allocation in a radio access network,
Service request conditions set for each slice, use service information relating to services used by the terminal, and an information acquisition step of acquiring location information and communication state information of the terminal;
A determining step of determining a resource allocation number for each slice according to the service request condition, based on the service request condition obtained by the information obtaining step, the used service information and the location information;
Based on the communication state information of the terminal obtained by the information obtaining step, based on the number of communicating terminals for each slice, a determining step to determine whether there is a slice without a communicating terminal,
When it is determined in the determining step that there is a slice having no communicating terminal, the resource allocation number for the slice having no communicating terminal determined in the determining step is allocated to the slice having the communicating terminal. A resource allocation step of controlling the resource allocation,
A resource allocation method comprising:

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