WO2022168141A1 - 制御システム、制御装置、制御方法及びプログラム - Google Patents
制御システム、制御装置、制御方法及びプログラム Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- the present invention relates to a control system, control device, control method and program.
- a high frequency band called millimeter wave band is used in addition to the conventional frequency band.
- radio waves in a high frequency band called Above-6 such as the 28 GHz band that can be used in 5G and local 5G, have large distance attenuation. is used to realize long-distance transmission.
- radio waves in the high-frequency band as described above travel in a straight line, and the loss due to shielding objects increases, so it is necessary to form a communication area according to the shielding objects.
- the present invention has been made in view of the above points, and an object of the present invention is to form a communication area according to a shield.
- a control system including a plurality of base stations capable of changing transmission points of radio waves in space and a control device in which the control device determines the position and shape of the radio wave shield in the space. and for each combination of one or more parameter values for determining the transmission point, the transmission point and the shield map of each of the plurality of base stations in the combination a calculation unit for calculating an index value relating to a range in which the radio waves of one or more of the base stations are not blocked by the shield, and the transmission of each of the plurality of base stations based on the combination that maximizes the index value and a control unit for controlling the change of the point.
- FIG. 2 is a diagram for explaining details of the mobile base station 20.
- FIG. 2 is a diagram showing a hardware configuration example of a control device 10 according to the first embodiment
- FIG. 2 is a diagram illustrating an example of functional configuration of a control device 10 according to the first embodiment
- FIG. 4 is a flowchart for explaining an example of a processing procedure executed by the control device 10 according to the first embodiment
- It is a figure for demonstrating a line-of-sight range.
- FIG. 1st Embodiment shows an example of the calculation result of the index value in 1st Embodiment.
- FIG. 10 is a flowchart for explaining an example of a processing procedure for identifying a combination of position/direction parameter values that maximizes an index value
- FIG. 9 is a flow chart for explaining an example of a processing procedure executed by the control device 10 according to the second embodiment
- FIG. 11 is a flow chart for explaining an example of a processing procedure executed by the control device 10 according to the third embodiment
- FIG. 10 is a flowchart for explaining an example of a processing procedure for identifying a combination of position/direction parameter values that maximizes an index value
- FIG. 9 is a flow chart for explaining an example of a processing procedure executed by the control device 10 according to the second embodiment
- FIG. 11 is a flow chart for explaining an example of a processing procedure executed by the control device 10 according to the third embodiment
- FIG. 1 is a diagram showing a configuration example of a control system according to the first embodiment.
- the control system includes a plurality of mobile base stations 20 (mobile base stations 20a and 20b), a shield detection device 30, a control device 10, and the like.
- the mobile base station 20 and the control device 10 are communicably connected by wire or wirelessly.
- the shielding object detection device 30 and the control device 10 are communicably connected by wire or wirelessly.
- the mobile base station 20 is a mobile base station 21 that forms a communication area in a space P1 such as in a factory or warehouse.
- the movable type means that the transmission point of radio waves can be changed.
- the mobile base station 20 realizes high-speed, large-capacity wireless communication with the terminal 40 by, for example, transmitting and receiving high-frequency radio waves used in the fifth-generation mobile communication system (5G).
- the terminal 40 is, for example, a communication device such as a smart phone, a tablet terminal, or a PC (Personal Computer).
- FIG. 1 shows an example where two mobile base stations 20, mobile base station 20a and mobile base station 20b, are arranged in space P1, but three or more mobile base stations 20 are arranged in space P1. good too.
- the shielding object detection device 30 has an imaging device or a LIDAR (Laser Imaging Detection and Ranging) device for detecting the shielding object 50 in the space P1.
- the shielding object detection device 30 transmits sensing information (hereinafter referred to as “shielding object detection information”) such as video information captured by an imaging device or LIDAR information measured by a LIDAR device to the control device 10 .
- a shield 50 is an object that can shield radio waves from the mobile base station 20 .
- the shield 50 is not necessarily fixed and may move semi-statically or dynamically. Note that the detection of the shielding object 50 may be performed by each terminal 40 .
- each terminal 40 detects a shielding object 50 around itself and transmits shielding object detection information related to the shielding object 50 detected by each terminal to the control device 10 .
- FIG. 1 shows an example in which there is one shield 50, a plurality of shields 50 may exist within the space P1.
- the control device 10 executes processing for forming a communication area according to the shield 50 by controlling the change of the radio wave transmission point of the mobile base station 20 based on the shield detection information. It's a computer. In this embodiment, changing the transmission point is realized by changing the position and direction of mobile base station 20 .
- the direction of the mobile base station 20 refers to the transmission direction of radio waves.
- the control device 10 based on the shielding object detection information, the control device 10 identifies the position and direction of each mobile base station 20 for which the index value of the communication area in the space P1 is optimized, and identifies the position and direction.
- the position and direction of each mobile base station 20 are controlled by transmitting the parameter (hereinafter referred to as “position/direction parameter”) to each mobile base station 20 .
- the position/direction parameter is an example of one or more parameters that determine the transmission point of radio waves.
- FIG. 2 is a diagram for explaining details of the mobile base station 20.
- the movable base station 20 has a base station 21 that transmits radio waves and a movable structure 22 that movably supports the base station 21 .
- an "a" is appended to the end of each reference number.
- a 'b' is added to the end of their respective reference numbers.
- the movable structure 22 has, for example, a rail on which the position of the base station 21 can be changed, and moves (slides) the base station 21 on the rail in the direction of the arrow a1 based on the position/direction parameter transmitted from the control device 10. Let As a result, the position of the base station 21 (radio wave transmission point) changes.
- the movable structure 22 moves the base station 21 around the c-axis (see symbol a2), around the r-axis (see symbol a3), and around the p-axis, based on the position direction parameters transmitted from the control device 10, for example. (see symbol a4).
- the direction of the base station 21 (radio wave transmission direction) changes.
- the rotation angle around the c-axis is called the tilt angle
- the rotation angle around the r-axis is called the roll angle
- the rotation angle around the p-axis is called the pan angle. That is, the tilt angle, roll angle, and pan angle are parameters that express the direction of the base station 21 .
- FIG. 2 illustrates an example in which the base station 21 moves on a fixed rail
- the configuration for changing the position and direction of the base station 21 is not limited to this.
- the movable base station 20 may be configured by mounting the base station 21 on a drone or an AGV (Automatic Guided Vehicle).
- the control device 10 can control the position and direction of the base station 21 by controlling the drone or AGV.
- the position and orientation may be changed manually.
- the transmission point and transmission direction of the radio waves of the base station 21 can be changed by physically moving the position and direction of the base station 21 .
- the transmission point and transmission direction of the radio waves of the base station 21 may be controlled by controlling the output of each unit.
- the mobile base station 20 controls the output of each unit of the distributed antenna system based on the Enable/Disable signal transmitted from the control device 10, thereby determining the transmission point and transmission direction of the radio waves of the base station 21. Control.
- the parameters for determining the transmission point and transmission direction of radio waves of the base station 21 may include, for example, an Enable/Disable signal in addition to the position/direction parameter.
- an Enable/Disable signal in addition to the position/direction parameter.
- a case will be described below in which the position and direction of the base station 21 are physically moved to control the radio wave transmission point and the transmission direction of the base station 21 .
- FIG. 3 is a diagram showing a hardware configuration example of the control device 10 according to the first embodiment.
- the control device 10 of FIG. 3 has a drive device 100, an auxiliary storage device 102, a memory device 103, a CPU 104, an interface device 105, etc., which are connected to each other via a bus B.
- FIG. 1 is a diagram showing a hardware configuration example of the control device 10 according to the first embodiment.
- the control device 10 of FIG. 3 has a drive device 100, an auxiliary storage device 102, a memory device 103, a CPU 104, an interface device 105, etc., which are connected to each other via a bus B.
- FIG. 1 is a diagram showing a hardware configuration example of the control device 10 according to the first embodiment.
- the control device 10 of FIG. 3 has a drive device 100, an auxiliary storage device 102, a memory device 103, a CPU 104, an interface device 105, etc., which are connected to each other via a bus B.
- a program that implements the processing in the control device 10 is provided by a recording medium 101 such as a CD-ROM.
- a recording medium 101 such as a CD-ROM.
- the program is installed from the recording medium 101 to the auxiliary storage device 102 via the drive device 100 .
- the program does not necessarily need to be installed from the recording medium 101, and may be downloaded from another computer via the network.
- the auxiliary storage device 102 stores installed programs, as well as necessary files and data.
- the memory device 103 reads and stores the program from the auxiliary storage device 102 when a program activation instruction is received.
- the CPU 104 executes functions related to the control device 10 according to programs stored in the memory device 103 .
- the interface device 105 is used as an interface for connecting to a network.
- FIG. 4 is a diagram showing a functional configuration example of the control device 10 according to the first embodiment.
- the control device 10 has a shield map generation unit 11 , a parameter identification unit 12 and a control unit 13 . These units are implemented by one or more programs installed in the control device 10 causing the CPU 104 to execute them.
- the program may be recorded on a recording medium and distributed, or may be distributed through a network.
- FIG. 5 is a flowchart for explaining an example of a processing procedure executed by the control device 10 according to the first embodiment.
- step S ⁇ b>110 the shielding object map generation unit 11 acquires shielding object detection information from the shielding object detection device 30 or each terminal 40 , or from the shielding object detection device 30 and each terminal 40 .
- the shielding object map generation unit 11 generates a shielding object map based on the obtained shielding object detection information (S120).
- a shield map is two-dimensional or three-dimensional map data indicating the position and shape of the shield 50 .
- the shielding object map generation unit 11 generates the shielding object map by calculating the position and size (shape) of the shielding object 50, for example, based on the shielding object detection information.
- the parameter identification unit 12 has a line-of-sight relationship with any one of the base stations 21 (radio wave transmission point) based on the shield map for each combination of possible values of the position and direction parameters of each base station 21.
- An index value (hereinafter simply referred to as "index value") of the range (hereinafter referred to as “line-of-sight range”) is calculated, and a combination with the maximum index value is specified (S130).
- the size of the line-of-sight range (hereinafter referred to as "line-of-sight range size”) is calculated as an index value.
- the line-of-sight range may be specified in two dimensions or in three dimensions.
- the line-of-sight range size is the area of the line-of-sight range. If the line of sight is specified in three dimensions, the line of sight size is the volume of the line of sight.
- the line-of-sight range refers to a range in space P ⁇ b>1 in which radio waves from one or more base stations 21 (radio wave transmission points) are not blocked by the shield 50 . An area that does not correspond to the line-of-sight range is called a “non-line-of-sight range”.
- FIG. 6 is a diagram for explaining the line-of-sight range.
- FIG. 6 illustrates two two-dimensional line-of-sight ranges (1) and (2).
- the position of the base station 21 differs between (1) and (2).
- area A1 is the line-of-sight range only for mobile base station 20a. Therefore, area A1 is a non-line-of-sight range for mobile base station 20b.
- Area A2 is a line-of-sight range only for mobile base station 20b. Therefore, area A2 is a non-line-of-sight range for mobile base station 20a.
- Area A3 is a line-of-sight range for both mobile base station 20a and mobile base station 20b.
- Area A4 is a non-line-of-sight range.
- the area composed of area A1, area A2, and area A3 is the line-of-sight range for one or more base stations 21.
- the line-of-sight range can change depending on the position of the base station 21 as well. Specifically, in (2), there is no non-line-of-sight range. Similarly, the line-of-sight range can also change depending on the direction of the base station 21 . That is, the line-of-sight range can change according to the combination of the values of the position and direction parameters. Therefore, the shielding object map generation unit 11 calculates an index value (line-of-sight range size) for each of a plurality of combinations of values of the position direction parameter.
- FIG. 7 is a diagram showing an example of calculation results of index values in the first embodiment.
- FIG. 7 shows that the line-of-sight range size is calculated for each combination of the position/direction parameter value for the base station 21a and the position/direction parameter value for the base station 21b.
- the combination of the values of the position/direction parameters means the combination of the values of the x-coordinate, y-coordinate, z-coordinate, pan angle, tilt angle, and roll angle.
- the x-coordinate is a value corresponding to the position of the base station 21 (radio wave transmission point) on one coordinate axis of the two-dimensional coordinate system on the horizontal plane (for example, on the bottom) of the space P1.
- the y-coordinate is a value corresponding to the position of the base station 21 (radio wave transmission point) on the other coordinate axis of the two-dimensional coordinate system.
- the z-coordinate is a value corresponding to the position of the base station 21 (radio wave transmission point) on the coordinate axis perpendicular to the horizontal plane (that is, in the height direction).
- the parameter identifying unit 12 identifies a combination of position/direction parameter values that have the largest line-of-sight range size from the calculation results shown in FIG.
- the control unit 13 transmits a combination of the values of the position direction parameters specified by the parameter specifying unit 12 (hereinafter referred to as “specified parameter values”) to each mobile base station 20, so that each base station 21 A change in position and direction (that is, the transmission point of the radio wave) is controlled (S140). That is, of the specific parameter values, the control unit 13 transmits to the mobile base station 20a the value of the position direction parameter related to the mobile base station 20a, and transmits the value of the position direction parameter related to the mobile base station 20b to the mobile base station 20b. .
- the processing procedure of FIG. 5 may be executed at a predetermined cycle or each time the shield detection information changes (that is, each time the position or shape of the shield 50 changes). By doing so, an appropriate communication area can be formed according to the movement of the shield 50 .
- FIG. 8 is a flowchart for explaining an example of a processing procedure for identifying a combination of position/direction parameter values that maximizes an index value.
- step S301 the parameter specifying unit 12 initializes the variable k1 to 0. Subsequently, the parameter specifying unit 12 initializes the variable k2 to 0 (S302).
- the variable k1 is a variable for identifying a combination to be processed from among combinations of values of the position and direction parameters relating to the mobile base station 20a.
- the variable k2 is a variable for identifying a combination to be processed from among combinations of values of the position direction parameter regarding the mobile base station 20b.
- the parameter identification unit 12 adds 1 to the variable k1 (S303). Note that at the timing of step S303, a new (unprocessed) combination may be generated for the values of the position direction parameters for the mobile base station 20a. If the position-orientation parameter consists of items as shown in FIG. 7, in this case the value of at least one item is changed. The width of change may be determined arbitrarily.
- the parameter specifying unit 12 determines whether or not the value of the variable k1 has exceeded k max (S304).
- k max is the number of combinations of possible values for the position-direction parameter.
- possible values may be determined for each position/direction parameter item, and all or part of the combinations of possible values for each item may be combinations of possible position/direction parameter values.
- the parameter identification unit 12 adds 1 to the variable k2 (S304).
- a new (unprocessed) combination may be generated for the values of the location/direction parameters for the base station 21b.
- the parameter specifying unit 12 determines whether or not the value of the variable k2 has exceeded k max (S304). Note that here, it is based on an example in which both the number of possible combinations of values for the position and direction parameters of the mobile base station 20a and the number of possible combinations of values for the position and direction parameters of the mobile base station 20b are k max . , and if both are different, in step S304, a value different from k max may be compared with k2.
- the parameter specifying unit 12 determines the k1-th combination (hereinafter referred to as “parameter value k1”) of the values of the position direction parameter of the mobile base station 20a and the value of the position direction parameter of the mobile base station 20b.
- the line-of-sight range with the k2th combination (hereinafter referred to as “parameter value k2”) is specified, and the index value (line-of-sight range size) of the line-of-sight range is calculated (S307).
- the parameter specifying unit 12 stores the calculation result in the memory device 103, the auxiliary storage device 102, or the like in association with the set of the parameter value k1 and the parameter value k2 (S307).
- the parameter identification unit 12 repeats step S305 and subsequent steps until the value of k2 exceeds kmax . Therefore, the line-of-sight range size is calculated for each set of the current parameter value k1 and each parameter value k2.
- the parameter identification unit 12 repeats step S302 and subsequent steps. Therefore, the line-of-sight range size is calculated for each set of each parameter value k1 and each parameter value k2.
- the parameter identification unit 12 identifies a set of parameter values k1 and k2 corresponding to the maximum value among the line-of-sight range sizes calculated in step S307. (S308).
- each mobile base station 20 can be specified to form a communication area with an optimized index value by performing similar processing with the position direction parameter of the fixed base station fixed. can be done.
- the size of the line-of-sight range (communication area), which changes according to the position and shape of the shield 50, is maximized. can be specified. Therefore, it is possible to form a communication area according to the shield.
- the size of the line-of-sight range is maximized, it is possible to improve the overall quality as much as possible when there may be many undetected terminals 40. becomes.
- 2nd Embodiment demonstrates a different point from 1st Embodiment. Points not specifically mentioned in the second embodiment may be the same as in the first embodiment.
- the communication area index value is different from that in the first embodiment.
- the index value is the number of terminals 40 in line-of-sight relationship (hereinafter referred to as "line-of-sight terminals").
- a line-of-sight terminal is a terminal 40 included in the line-of-sight range.
- FIG. 9 is a flowchart for explaining an example of a processing procedure executed by the control device 10 according to the second embodiment.
- step S130 is changed to step S130a, and step S121 is added between step S120 and step S130a.
- the parameter identification unit 12 acquires the location information of each terminal 40 .
- Location information of a certain terminal 40 refers to information indicating the location of the terminal 40 .
- the terminal position information may be any information that enables the position in the space P1 to be grasped, but may be wide-area position information.
- the terminal location information may be location information measured by the GPS (Global Positioning System) function of the terminal 40, or may be location information measured using a sensor or the like that the terminal 40 has.
- each terminal 40 transmits terminal location information to the control device 10 using an uplink data channel (or control channel).
- the terminal position information of each terminal 40 may be estimated by the base station 21 or the control device 10 analyzing the camera image.
- step S130a the parameter identifying unit 12 calculates an index value (the number of line-of-sight terminals) for each combination of possible values of the position direction parameter of each base station 21, based on the shield map and each terminal position information. , to identify the combination with the maximum index value.
- the parameter identifying unit 12 identifies the line-of-sight range for the parameter values k1 and k2, and based on the line-of-sight range and the location information of each terminal, Identify the terminal 40 (line-of-sight terminal).
- the parameter specifying unit 12 counts the number of line-of-sight terminals, associates the count result with a set of the parameter value k1 and the parameter value k2, and stores it in the memory device 103 or the auxiliary storage device 102 or the like. Therefore, in the second embodiment, information is calculated in step S307 in which the "index value" column in FIG. T2 is changed to "number of line-of-sight terminals".
- step S308 of FIG. 8 the parameter identifying unit 12 identifies a set of parameter values k1 and k2 corresponding to the maximum number of line-of-sight terminals calculated in step S307.
- the value that maximizes the number of line-of-sight terminals that varies according to the position and shape of the shield 50 is specified. can do. Therefore, a communication area corresponding to the shield 50 can be formed.
- the second embodiment is suitable in situations where the existence and position of the terminal 40 can be managed or detected, such as closed area usage such as local 5G.
- the index value of the communication area is different from each of the above embodiments. Specifically, in the third embodiment, the total amount of traffic of line-of-sight terminals is used as the index value.
- the communication volume of the terminal 40 may be traffic volume or throughput.
- FIG. 10 is a flowchart for explaining an example of a processing procedure executed by the control device 10 according to the third embodiment.
- the same step numbers as in FIG. 9 are assigned to the same steps, and the description thereof is omitted.
- step S130 is changed to step S130b, and step S122 is added between step S121 and step S130b.
- step S ⁇ b>122 the parameter identification unit 12 acquires the traffic of each terminal 40 .
- the traffic of a certain terminal 40 may be uploaded from each terminal 40 or obtained from each base station 21 .
- the communication volume of each terminal 40 may be acquired together with the terminal location information.
- the terminals 40 from which the communication traffic is acquired may be limited to line-of-sight terminals.
- step S130b the parameter identification unit 12 calculates the communication area index based on the shield map, the terminal position information, and the communication traffic of each terminal 40 for each combination of possible values of the position direction parameter of each base station 21. Calculate the value (total communication volume of line-of-sight terminals), and identify the combination that maximizes the index value.
- the parameter identifying unit 12 identifies the line-of-sight terminals for the parameter values k1 and k2, and calculates the total traffic of the line-of-sight terminals.
- the parameter specifying unit 12 stores the calculation result in the memory device 103, the auxiliary storage device 102, or the like in association with the set of the parameter value k1 and the parameter value k2. Therefore, in the third embodiment, information is calculated in step S307 in which the "index value" column in FIG.
- step S308 of FIG. 8 the parameter identifying unit 12 identifies a set of parameter values k1 and k2 corresponding to the maximum value in the total throughput of line-of-sight terminals calculated in step S307.
- the total communication traffic of line-of-sight terminals which varies depending on the position and shape of the shield 50, is maximized.
- a value can be specified. Therefore, a communication area corresponding to the shield 50 can be formed.
- maximization of the off-road effect can be expected.
- the third embodiment is suitable for situations where the existence and position of the terminal 40 can be managed or detected, such as local 5G closed area usage, and when a backup RAT such as Sub-6 coexists.
- a line-of-sight range is defined as a line segment extending from the central point of the antenna of the base station 21 to the point where it collides with the wall of the space P1 or the shield 50 .
- the line-of-sight range can be easily identified only by the shape of the space P1 and the position and shape of the shield 50, regardless of the position of the terminal 40.
- a Fresnel zone is calculated for each point on a predetermined grid from the central position of the antenna of the base station 21, and a point where a predetermined x% of the Fresnel zone is not shielded is defined as a line-of-sight position.
- the area around the grid is the line-of-sight range.
- the line-of-sight range can be specified only by the shape of the space P1 and the position and shape of the shield 50, regardless of the position of the terminal 40.
- the Fresnel zone is calculated for each terminal 40, and the terminal 40 in which a predetermined x% of the Fresnel zone is not shielded is defined as a line-of-sight terminal.
- the line-of-sight terminal can be specified only by the shape of the space P1 and the position and shape of the shield 50.
- the Fresnel zone can be calculated using the following formula.
- each parameter is as follows.
- d Shortest distance between transmitter and receiver (m)
- r1 Radius of central part of spheroid (Fresnel radius)
- d1 Distance from the transmitting side to the center of the spheroid (m):
- d2 distance from the receiving side to the center of the spheroid (m)
- d3 path difference (m) between the reflected wave reflected at the Fresnel radius and the direct wave
- ⁇ Wavelength (m)
- the shielding object map generator 11 is an example of a generator.
- the parameter identification unit 12 is an example of a calculation unit.
- Control device 11 Shielding object map generation unit 12 Parameter specifying unit 13
- Control unit 20 Mobile base station 21
- Shielding object detection device 40 Terminal 50
- Shielding object 100 Drive device 101
- Recording medium 102 Auxiliary storage device 103
- Memory device 104 CPUs 105 interface device B bus
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Abstract
Description
基地局21のアンテナの中心位置の点から空間P1の壁、又は遮蔽物50に衝突するまでの線分が通る領域を見通し範囲とする。
基地局21のアンテナの中心位置の点から、予め定めたグリッド上の各点に対して、フレネルゾーンを算出し、フレネルゾーンのうち予め定めたx%が遮蔽されないポイントを見通し位置とし、これらのグリッド周囲のエリアを見通し範囲とする。
d:送信と受信側の最短距離(m)
r1:回転楕円体の中央部の半径(フレネル半径)(m)
d1:送信側と回転楕円体中央までの距離(m):
d2:受信側と回転楕円体中央までの距離(m)
d3:フレネル半径部分で反射する反射波と直接波の経路差(m)
λ:波長(m)
なお、上記各実施の形態において、遮蔽物マップ生成部11は、生成部の一例である。パラメータ特定部12は、算出部の一例である。
11 遮蔽物マップ生成部
12 パラメータ特定部
13 制御部
20 可動基地局
21 基地局
22 可動構造体
30 遮蔽物検知装置
40 端末
50 遮蔽物
100 ドライブ装置
101 記録媒体
102 補助記憶装置
103 メモリ装置
104 CPU
105 インタフェース装置
B バス
Claims (7)
- 空間における電波の送信点を変更可能な複数の基地局と、制御装置とを含む制御システムであって、
前記制御装置は、
前記空間における前記電波の遮蔽物の位置及び形状を示す遮蔽物マップを生成する生成部と、
前記送信点を決定する1以上のパラメータの値の組み合わせごとに、当該組み合わせにおける前記複数の基地局のそれぞれの前記送信点と前記遮蔽物マップとに基づき、前記遮蔽物によって1以上の前記基地局の電波が遮蔽されない範囲に関する指標値を算出する算出部と、
前記指標値が最大となる前記組み合わせに基づき、前記複数の基地局のそれぞれの前記送信点の変更を制御する制御部と、
を有することを特徴とする制御システム。 - 前記指標値は、前記範囲の大きさである、
ことを特徴とする請求項1記載の制御システム。 - 前記算出部は、前記空間における1以上の端末のそれぞれの位置情報を取得し、前記遮蔽物マップ及びそれぞれの前記端末の前記位置情報に基づき、前記遮蔽物によって1以上の前記基地局の電波が遮蔽されない範囲に含まれる前記端末の数を前記指標値として算出する、
ことを特徴とする請求項1記載の制御システム。 - 前記算出部は、前記空間における1以上の端末のそれぞれの位置情報及び通信量を取得し、前記遮蔽物マップ並びにそれぞれの前記端末の前記位置情報及び前記通信量に基づき、前記遮蔽物によって1以上の前記基地局の電波が遮蔽されない範囲に含まれる前記端末の通信量の合計を前記指標値として算出する、
ことを特徴とする請求項1記載の制御システム。 - 空間における電波の送信点を変更可能な複数の基地局の前記送信点の変更を制御する制御装置であって、
前記空間における前記電波の遮蔽物の位置及び形状を示す遮蔽物マップを生成する生成部と、
前記送信点を決定する1以上のパラメータの値の組み合わせごとに、当該組み合わせにおける前記複数の基地局のそれぞれの前記送信点と前記遮蔽物マップとに基づき、前記遮蔽物によって1以上の前記基地局の電波が遮蔽されない範囲に関する指標値を算出する算出部と、
前記指標値が最大となる前記組み合わせに基づき、前記複数の基地局のそれぞれの前記送信点の変更を制御する制御部と、
を有することを特徴とする制御装置。 - 空間における電波の送信点を変更可能な複数の基地局と、制御装置とを含む制御システムにもける前記制御装置が、
前記空間における前記電波の遮蔽物の位置及び形状を示す遮蔽物マップを生成する生成手順と、
前記送信点を決定する1以上のパラメータの値の組み合わせごとに、当該組み合わせにおける前記複数の基地局のそれぞれの前記送信点と前記遮蔽物マップとに基づき、前記遮蔽物によって1以上の前記基地局の電波が遮蔽されない範囲に関する指標値を算出する算出手順と、
前記指標値が最大となる前記組み合わせに基づき、前記複数の基地局のそれぞれの前記送信点の変更を制御する制御手順と、
を実行することを特徴とする制御方法。 - 請求項5記載の制御装置としてコンピュータを機能させることを特徴とするプログラム。
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