Information processing device and information processing method

Abstract

To prevent a terminal from being unable to communicate in a complement target area complemented by another base station when a failure occurs in a base station.SOLUTION: An information processing device 1 includes: a first identification unit 132 that refers to power storage residual quantity information indicating the power storage residual quantity of a storage battery 3 provided in each of a plurality of base stations 2 related to wireless communication, and identifies a first base station 2A that is a base station 2 corresponding to a storage battery 3 whose power storage residual quantity is below a first threshold; a second identification unit 133 that identifies a second base station 2B that is a base station 2 that can cover a part of a first cover area, which is a cover area where the first base station 2A covers wireless communication, based on base station location information indicating the location of each of the plurality of base stations 2; and an area control unit 134 that controls the cover area of the second base station 2B so that the cover area of the second base station 2B covers at least a part of the first cover area.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an information processing device and an information processing method. [Background technology]

[0002] Conventionally, in a communication system consisting of multiple base stations for communication of mobile terminals, when a base station fails due to a power outage or disaster, a technology is known in which at least a part of the coverage area of ​​the failed base station is complemented by other base stations adjacent to the failed base station (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-46096 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional technology, after detecting a failure in a base station, the coverage area of ​​the failed base station is complemented. As a result, a problem occurs in that mobile terminals cannot communicate in the complement target area of ​​the coverage area of ​​the failed base station that is covered by another base station from the time the failure occurs until the area is complemented by another base station.

[0005] Therefore, the present invention has been made in consideration of these points, and aims to prevent terminals from being unable to communicate in a complement area that is complemented by other base stations when a failure occurs in a base station. [Means for solving the problem]

[0006] An information processing device according to a first aspect of the present invention includes a first identification unit that refers to remaining power storage information indicating the remaining power storage capacity of a storage battery that is provided in each of a plurality of base stations related to wireless communication and can supply power to the base station, and identifies a first base station that is a base station corresponding to a storage battery whose remaining power storage capacity is below a first threshold; a second identification unit that identifies a second base station that is a base station that can cover a part of a first cover area, which is a cover area in which the first base station covers the wireless communication, based on base station location information indicating the location of each of the plurality of base stations; and an area control unit that controls the cover area of ​​the second base station so that the cover area of ​​the second base station identified by the second identification unit covers at least a part of the first cover area.

[0007] The plurality of base stations may operate using power supplied from an external power source different from the storage battery, and may operate using power supplied from the storage battery when power is not supplied from the external power source, and the second identification unit may identify, as the second base station, a base station that is supplied with power from an external power source among base stations that can cover part of the first coverage area.

[0008] When there is no base station that is supplied with power from the external power source among the base stations that can cover part of the first coverage area, the second identification unit may identify as the second base station, among the base stations that can cover part of the first coverage area, a base station whose remaining amount of power stored in a storage battery is equal to or greater than a second threshold, which is a threshold that is greater than the first threshold.

[0009] The second identification unit may identify a distance between the first base station and each of a plurality of base stations that can cover a portion of the first coverage area based on the base station location information, and may identify the second base station from among the plurality of base stations that can cover a portion of the first coverage area based on the identified distances.

[0010] The second identification unit may identify a number of connected terminals, which is the number of terminals that are communicatively connected to each of a plurality of base stations that can cover a portion of the first coverage area, and may identify the second base station from among a plurality of base stations that can cover a portion of the first coverage area based on the identified number of connected terminals.

[0011] The mobile station may further include a third identification unit that, when the remaining power storage capacity of the storage battery corresponding to the second base station falls below the first threshold, refers to the base station location information and identifies a third base station that is a base station that can cover part of the first coverage area based on the location of the first base station and the location of the second base station, and the area control unit may control the coverage area of ​​the third base station so that the coverage area of ​​the third base station identified by the third identification unit extends toward the coverage area of ​​the first base station.

[0012] The area control unit may reduce the first coverage area over time and control the coverage area of ​​the second base station so that the coverage area of ​​the second base station expands toward the coverage area of ​​the first base station over time.

[0013] The area control unit may stop control of expanding the coverage area of ​​the second base station toward the coverage area of ​​the first base station when the remaining amount of stored power of the storage battery corresponding to the second base station falls below the first threshold.

[0014] The second identification unit may identify the location of a mobile station that is a movable base station that can communicate with a terminal, and may identify the second base station that can cover an area of ​​the first coverage area that cannot be covered by the mobile station based on the base station location information and the location of the mobile station.

[0015] The area control unit may acquire people flow information indicating the flow of people in the first cover area when a failure occurs in the first base station, identify an area of ​​the first cover area that is covered by the second base station based on the acquired people flow information, and control the cover area of ​​the second base station so that the cover area of ​​the second base station extends toward the identified area.

[0016] The information processing device may further include a notification unit that notifies a terminal connected to the first base station of information indicating that the first base station will become unavailable. The notification unit may notify information indicating that at least a part of the first coverage area is complemented by the second base station.

[0017] The notification unit may notify information indicating that complementation of at least a portion of the first coverage area will be completed when the remaining amount of power stored in the storage battery corresponding to the second base station falls below a second threshold, which is a threshold greater than the first threshold. The notification unit may notify information about a coverage area of ​​a base station corresponding to a storage battery that exists within a predetermined range from the first base station and whose remaining amount of stored power is equal to or greater than the first threshold.

[0018] An information processing method according to a second aspect of the present invention is executed by a computer and includes the steps of: referring to remaining battery charge information indicating the remaining battery charge of a battery capable of supplying power to a plurality of base stations related to wireless communication, and identifying a first base station corresponding to a storage battery whose remaining battery charge is below a first threshold; identifying a second base station that is capable of covering a portion of a first cover area, which is a cover area in which the first base station covers the wireless communication, based on base station location information indicating the location of each of the plurality of base stations; and controlling the cover area of ​​the second base station so that the identified cover area of ​​the second base station covers at least a portion of the first cover area. [Effects of the Invention]

[0019] According to the present invention, when a failure occurs in a base station, it is possible to prevent a terminal from being unable to communicate in a complement target area that is complemented by another base station. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a diagram illustrating an overview of an information processing device. [Figure 2] FIG. 2 is a diagram illustrating a functional configuration of an information processing device. [Figure 3] FIG. 10 is a diagram illustrating an example of base station location information. [Figure 4] 10 is a flowchart showing a flow of processing related to the information processing device. DETAILED DESCRIPTION OF THE INVENTION

[0021] [Overview of information processing device 1] 1 is a diagram illustrating an overview of an information processing device 1. The information processing device 1 is a computer that controls the range of a coverage area in which a base station 2 related to wireless communication covers wireless communication with wireless communication terminals such as mobile terminals. Hereinafter, a wireless communication terminal will be simply referred to as a terminal.

[0022] The information processing device 1 is communicably connected to a plurality of base stations 2. Each of the plurality of base stations 2 is a base station related to wireless communication such as LTE (Long Term Evolution), and performs wireless communication with terminals located in the vicinity of the base station 2. An area in which the base station 2 can wirelessly communicate with terminals is called a coverage area. In FIG. 1, an example of the coverage area of ​​each of the plurality of base stations 2 is indicated by a dashed line. Each of the plurality of base stations 2 operates using power provided from an external power source such as a commercial power source.

[0023] The information processing device 1 acquires, from each of the plurality of base stations 2, remaining power storage information indicating the remaining power storage amount of the storage battery 3 provided in each of the plurality of base stations 2. The information processing device 1 refers to the acquired remaining power storage information and identifies the base station 2 corresponding to the storage battery 3 whose remaining power storage amount is below a first threshold as the first base station 2A, which is a base station that is predicted to be unable to communicate because it will not receive power from an external power source.

[0024] The information processing device 1 identifies a second base station 2B that is a base station that can cover the coverage area of ​​the first base station 2A, based on base station location information that indicates the location of each of the multiple base stations. Then, the information processing device 1 controls the coverage area of ​​the second base station 2B so that the coverage area of ​​the identified second base station 2B covers at least a part of the coverage area of ​​the first base station 2A.

[0025] By doing this, when a failure occurs in a base station 2, the information processing device 1 can prevent a terminal from being unable to communicate in a complement target area, which is a coverage area of ​​the base station 2 that can be complemented by another base station 2, within the coverage area of ​​the base station 2.

[0026] [Functional configuration of information processing device 1] Next, a description will be given of the functional configuration of the information processing device 1. Fig. 2 is a diagram showing the functional configuration of the information processing device 1. The information processing device 1 has a communication unit 11, a storage unit 12, and a control unit 13.

[0027] The communication unit 11 is a communication interface for transmitting and receiving data to and from the base station 2 via a communication network such as a mobile phone line, the Internet, or a wireless LAN. The storage unit 12 is a storage medium that stores various types of data, and includes a read-only memory (ROM), a random access memory (RAM), a hard disk, a solid-state drive (SSD), a flash memory, etc. The storage unit 12 stores programs executed by the control unit 13. The storage unit 12 stores programs that cause the control unit 13 to function as an acquisition unit 131, a first identification unit 132, a second identification unit 133, an area control unit 134, and a notification unit 135.

[0028] The storage unit 12 also stores base station location information indicating the location of each of the multiple base stations 2. Fig. 3 is a diagram showing an example of base station location information. As shown in Fig. 3, the base station location information is information that associates a base station ID for identifying a base station 2 with location information of the base station 2. The location information is, for example, information indicating the latitude and longitude of the base station 2. In addition to the information indicating the latitude and longitude of the base station 2, the location information may also include information indicating the altitude at which the base station 2 is located.

[0029] The control unit 13 is, for example, a CPU (Central Processing Unit). The control unit 13 executes a program stored in the storage unit 12, thereby functioning as an acquisition unit 131, a first identification unit 132, a second identification unit 133, an area control unit 134, and a notification unit 135.

[0030] Before describing the details of each function of the control unit 13, the base station 2 will be described. Each of the multiple base stations 2 operates on power supplied from an external power source, such as a commercial power source, different from the storage battery 3 provided in the base station 2. When power is not supplied from the external power source, each of the multiple base stations 2 operates on power supplied from the storage battery 3 provided in the base station 2.

[0031] Each of the plurality of base stations 2 also acquires remaining power storage capacity information of the storage battery 3 from the storage battery 3. Then, each of the plurality of base stations 2 transmits to the information processing device 1, at predetermined time intervals, a base station ID for identifying the base station 2, the remaining power storage capacity information, and power status information indicating whether the base station 2 is operating using power supplied from an external power source, all in association with each other.

[0032] Next, the functions of the control unit 13 will be described in detail. The acquisition unit 131 acquires remaining power information indicating the remaining power of the storage battery 3 provided in each of the base stations 2 related to the plurality of wireless communications. For example, the acquisition unit 131 acquires the remaining power information corresponding to each of the plurality of base stations 2 by receiving the base station ID and the remaining power information transmitted from each of the plurality of base stations 2. Furthermore, the acquisition unit 131 acquires power status information together with the base station ID and the remaining power information from each of the plurality of base stations 2.

[0033] The first identifying unit 132 refers to the remaining power storage information acquired by the acquisition unit 131 from each of the plurality of base stations 2, and identifies a first base station 2A that is a base station 2 corresponding to a storage battery 3 whose remaining power storage amount is below a first threshold. The first identifying unit 132 refers to the latest remaining power storage information acquired by the acquisition unit 131 from each of the plurality of base stations 2, for example, at predetermined time intervals, and identifies remaining power storage information whose remaining power storage amount is below the first threshold. The first identifying unit 132 identifies the base station 2 indicated by the base station ID acquired by the acquisition unit 131 together with the identified remaining power storage information, as the first base station 2A corresponding to a storage battery 3 whose remaining power storage amount is below the first threshold.

[0034] The second identification unit 133 identifies the second base station 2B, which is a base station 2 that can cover part of the first coverage area, which is the coverage area in which the first base station 2A covers wireless communications, based on base station location information that indicates the location of each of the multiple base stations 2. For example, the second identification unit 133 refers to the base station location information stored in the storage unit 12, and identifies the location of the first base station 2A based on location information associated with the base station ID of the first base station 2A identified by the first identification unit 132.

[0035] Furthermore, the second identification unit 133 refers to the base station location information and identifies multiple base station IDs that are different from the base station ID of the first base station 2A identified by the first identification unit 132. Based on the location information associated with the multiple identified base station IDs, the second identification unit 133 identifies the base station ID of a base station 2 located within a predetermined distance from the location of the first base station 2A. Then, the second identification unit 133 identifies the base station 2 with the identified base station ID as the second base station 2B that can cover at least a part of the first cover area.

[0036] Note that the second identifying unit 133 may identify, among the base stations 2 that can cover at least a part of the first coverage area, a base station 2 that is supplied with power from an external power source as the second base station 2B. For example, among the base stations 2 that can cover at least a part of the first coverage area, the second identifying unit 133 identifies, as the second base station 2B, a base station 2 whose acquired power status information indicates that the base station 2 is operating with power supplied from an external power source.

[0037] Here, the second identification unit 133 may identify a storage battery 3 whose remaining power storage capacity is decreasing based on the remaining power storage capacity information acquired by the acquisition unit 131 at predetermined intervals corresponding to a base station 2 that can cover at least a part of the first coverage area, and identify the base station 2 corresponding to the storage battery 3 as the second base station 2B.

[0038] Furthermore, when there is no base station 2 to which power is supplied from an external power source among the base stations 2 that can cover part of the first coverage area, the second identification unit 133 may identify, from among the base stations 2 that can cover part of the first coverage area, a base station 2 whose remaining amount of stored power in the storage battery 3 is equal to or greater than a second threshold, which is a threshold that is greater than the first threshold, as the second base station 2B. In this way, it is possible to extend the time for covering at least part of the first coverage area compared to when the second base station 2B is not identified.

[0039] Furthermore, when there are many base stations 2 located within a predetermined distance from the location of the first base station 2A, it may not be necessary to identify all of the base stations 2 as the second base stations 2B. For example, when there are multiple base stations 2 that can cover at least a part of the first cover area in the same direction from the location of the first base station 2A, some of these base stations 2 can be designated as the second base stations 2B, thereby covering the area of ​​the first cover area that corresponds to that direction.

[0040] In contrast, the second identification unit 133 may identify the distance between the first base station 2A and each of multiple base stations 2 that can cover at least a portion of the first coverage area, based on the base station location information. Then, the second identification unit 133 may identify the second base station 2B from among the multiple base stations 2 that can cover a portion of the first coverage area, based on the identified distance. For example, when there are multiple base stations 2 whose coverage areas overlap with the base stations 2 that can cover at least a portion of the first coverage area, the second identification unit 133 identifies the base station 2 that is relatively close to the first base station 2A as the second base station 2B. In this way, the information processing device 1 can identify the base station 2 that is relatively close to the first base station 2A and has a relatively wide coverage area as the second base station 2B.

[0041] Furthermore, the second identification unit 133 may identify the number of connected terminals, which is the number of terminals that are communicatively connected to each of a plurality of base stations 2 that can cover part of the first coverage area. In this case, the acquisition unit 131 acquires connected terminal number information indicating the number of connected terminals from each of the plurality of base stations 2, and the second identification unit 133 identifies the number of connected terminals based on the connected terminal number information. The second identification unit 133 identifies the second base station 2B from among the plurality of base stations 2 that can cover part of the first coverage area based on the identified number of connected terminals.

[0042] For example, when there are multiple base stations 2 whose coverage areas overlap with the base station 2 that can cover at least a part of the first coverage area, the second identification unit 133 identifies as the second base station 2B the base station 2 with a relatively small number of terminals connected to it, based on the number of connected terminals identified for each of these base stations 2. In this way, when the second base station 2B covers at least a part of the first coverage area, the information processing device 1 can prevent an increase in the number of terminals connected to the second base station 2B and communication congestion.

[0043] Furthermore, the second identification unit 133 may identify the location of a mobile station that is a movable base station that can communicate with the terminal. In this case, the acquisition unit 131 acquires mobile station location information indicating the location of the mobile station from the mobile station, and the second identification unit 133 identifies the location of the mobile station based on the mobile station location information. Then, based on the base station location information and the location of the mobile station, the second identification unit 133 may identify, as the second base station 2B, a base station 2 that can cover an area of ​​the first coverage area that the mobile station cannot cover, among the base stations 2 that can cover at least a part of the first coverage area. In this way, a wide range of the first coverage area can be covered by the mobile station and the second base station 2B.

[0044] The area control unit 134 controls the coverage area of ​​the second base station 2B so that the coverage area of ​​the second base station 2B identified by the second identification unit 133 covers at least a part of the first coverage area. For example, the area control unit 134 transmits instruction information to the second base station 2B to instruct the second base station 2B to perform mechanical tilt control to control the angle at which one of the one or more antennas included in the second base station 2B, that corresponds to the direction of the first base station 2A, is oriented so that the coverage area of ​​the antenna covers at least a part of the first coverage area.

[0045] Although the area control unit 134 controls the coverage area of ​​the second base station 2B by controlling the angle at which the antennas are oriented, this is not limiting. The area control unit 134 may transmit instruction information to the second base station 2B to instruct the second base station 2B to perform electrical tilt control that changes the phase of radio waves output by multiple antennas corresponding to the direction of the first base station 2A, so that the second base station 2B covers at least a part of the first coverage area.

[0046] Furthermore, by transmitting instruction information to the second base station 2B instructing the second base station 2B to increase the intensity of radio waves output by an antenna corresponding to the direction of the first base station 2A, the coverage area of ​​the antenna may be made to cover at least a part of the first coverage area. Furthermore, when the second base station 2B is capable of outputting radio waves of multiple frequencies using multiple antennas, the area control unit 134 may transmit instruction information to the second base station 2B to cause an antenna of the multiple antennas that is capable of outputting radio waves of a frequency that the second base station 2B can easily reach, to output radio waves, so that the coverage area of ​​the second base station 2B covers at least a part of the first coverage area.

[0047] Here, the area control unit 134 may transmit to the first base station 2A instruction information for reducing the first cover area over time, and may also transmit to the second base station 2B instruction information for controlling the cover area of ​​the second base station 2B so that the cover area of ​​the second base station 2B expands over time toward the cover area of ​​the first base station 2A. In this way, a terminal that has been communicating with the first base station 2A in the first cover area can be gradually handed over to communication with the second base station 2B, thereby preventing the terminal from being unable to hand over and temporarily losing communication.

[0048] Furthermore, the area control unit 134 may determine whether the remaining amount of stored power of the storage battery 3 corresponding to the second base station 2B falls below a first threshold, based on the latest remaining amount of stored power information corresponding to the second base station 2B acquired by the acquisition unit 131. When the remaining amount of stored power of the storage battery 3 corresponding to the second base station 2B falls below the first threshold, the area control unit 134 may stop the control of expanding the coverage area of ​​the second base station 2B toward the coverage area of ​​the first base station 2A, and may return the coverage area of ​​the second base station 2B to the state before expanding it toward the coverage area of ​​the first base station 2A. In this way, the information processing device 1 can prevent the remaining amount of stored power of the storage battery 3 corresponding to the second base station 2B from running out early, causing communication to become unavailable in the original coverage area of ​​the second base station 2B early.

[0049] Furthermore, the area control unit 134 may acquire people flow information indicating the flow of people in the first cover area when a failure occurs in the first base station 2A. In this case, the area control unit 134 transmits the base station ID of the first base station 2A to a management device (not shown) that manages people flow information indicating past people flows and predicted people flows in the event of a disaster in each of a plurality of areas, and acquires the people flow information of the area corresponding to the first base station 2A from the management device.

[0050] The area control unit 134 then identifies the flow of people in the first cover area based on the acquired people flow information, identifies an area of ​​the first cover area that the second base station 2B should cover based on the identified people flow, and controls the cover area of ​​the second base station 2B so that the cover area of ​​the second base station 2B expands toward the identified area. In this way, the information processing device 1 can increase the probability that the second base station 2B can cover an area of ​​the first cover area that is predicted to have a large number of terminals.

[0051] The notification unit 135 notifies a terminal connected to the first base station 2A of information indicating that the first base station 2A will become unavailable. For example, the notification unit 135 calculates the remaining time until the first base station 2A will become unavailable based on the remaining power of the storage battery 3 indicated in the remaining power information corresponding to the first base station 2A and the power consumption per unit time of the first base station 2A. Then, the notification unit 135 notifies the terminal connected to and communicating with the first base station 2A of first warning information indicating the calculated remaining time by instructing the first base station 2A to notify the terminal.

[0052] Furthermore, the notification unit 135 may notify information indicating that at least a portion of the first coverage area is complemented by the second base station 2B. For example, the notification unit 135 identifies a complementation area, which is an area covered by the second base station 2B, within the first coverage area based on the control status of the second base station 2B by the area control unit 134. Then, the notification unit 135 notifies a terminal that is communicatively connected with the first base station 2A of complementation area information indicating the identified complementation area by instructing the first base station 2A to notify the terminal. In this way, the information processing device 1 can prompt the user of the terminal connected with the first base station 2A to move to the complementation area to continue communication.

[0053] Furthermore, the notification unit 135 may notify information indicating that the complement of at least a part of the first coverage area will be completed when the remaining amount of stored power of the storage battery 3 corresponding to the second base station 2B falls below a second threshold, which is a threshold greater than the first threshold. For example, based on the difference between the current remaining amount of stored power of the storage battery 3 corresponding to the second base station 2B and the second threshold and the power consumption per unit time of the second base station 2B, the notification unit 135 calculates the time until the remaining amount of stored power of the storage battery 3 falls below the second threshold as the remaining time until the second base station 2B completes the complement of at least a part of the first coverage area.

[0054] Then, the notification unit 135 instructs the first base station 2A to notify the terminal connected to the first base station 2A of the second warning information indicating the calculated remaining time, thereby notifying the terminal of the second warning information. In this way, the information processing device 1 can prompt the user of the terminal connected to the first base station 2A to complete communication that is required before completion of at least a part of the first coverage area is completed.

[0055] Furthermore, the notification unit 135 may notify surrounding cover area information related to the cover area of ​​a base station 2 corresponding to a storage battery 3 whose remaining power storage amount is equal to or greater than a first threshold and that is located within a predetermined range from the first base station 2A. For example, the notification unit 135 notifies a terminal that is communicatively connected to the first base station 2A of the surrounding cover area information by instructing the first base station 2A to notify the terminal of the surrounding cover area information. In this way, the information processing device 1 can prompt the user of the terminal connected to the first base station 2A to move to the surrounding cover area to continue communication.

[0056] Furthermore, the notification unit 135 may notify a terminal connected to the second base station 2B of information regarding a deterioration in communication quality in the coverage area of ​​the second base station 2B. For example, the notification unit 135 notifies a terminal connected to the second base station 2B of information indicating that the quality of communication via the second base station 2B will deteriorate, by instructing the second base station 2B to notify the terminal of the information. In this case, the notification unit 135 may also notify surrounding coverage area information regarding the coverage area of ​​a base station 2 corresponding to a storage battery 3 that exists within a predetermined range from the second base station 2B and whose remaining power storage amount is equal to or greater than a first threshold. In this way, the information processing device 1 can prompt a user of a terminal connected to the second base station 2B to move to a surrounding coverage area to continue communication.

[0057] [Operation flow] Next, a description will be given of the flow of processing related to the information processing device 1. Fig. 4 is a flowchart showing an example of the flow of processing related to the information processing device 1.

[0058] First, the acquisition unit 131 acquires remaining power information indicating the remaining power of the storage battery 3 provided in each of the plurality of base stations 2 (S1). Next, the first identification unit 132 identifies, from among the plurality of base stations 2, a first base station 2A that is a base station 2 whose remaining power is below a first threshold, based on the remaining power information acquired by the acquisition unit 131 from each of the plurality of base stations 2 (S2).

[0059] Next, the second identification unit 133 identifies the second base station 2B, which is a base station 2 that can cover part of the first coverage area, which is the coverage area of ​​the first base station 2A, based on the base station location information stored in the memory unit 12 (S3).

[0060] The area control unit 134 starts tilt control of the antenna of the second base station 2B so that the coverage area of ​​the second base station 2B specified in S3 covers at least a part of the first coverage area (S4).

[0061] Next, the acquisition unit 131 acquires remaining power storage information corresponding to each of the first base station 2A and the second base station 2B (S5). Next, the area control unit 134 determines whether the first remaining power storage amount, which is the remaining power storage amount of the storage battery 3 corresponding to the first base station 2A, exceeds a first threshold based on the remaining power storage information of the first base station 2A acquired in S5 (S6). If the area control unit 134 determines that the first remaining power storage amount exceeds the first threshold, that is, that power is supplied to the first base station 2A from an external power source and that the first base station 2A can cover the first coverage area by itself (YES in S6), the area control unit 134 proceeds to S8 and terminates tilt control of the antenna of the second base station 2B. If the area control unit 134 determines that the first remaining power storage amount does not exceed the first threshold (NO in S6), the area control unit 134 proceeds to S7.

[0062] Next, the area control unit 134 determines whether the second remaining power amount, which is the remaining power amount of the storage battery 3 corresponding to the second base station 2B, has fallen below the first threshold based on the remaining power amount information of the second base station 2B acquired in S5 (S7). If the area control unit 134 determines that the second remaining power amount has fallen below the first threshold, that is, that power is no longer supplied to the second base station 2B from the external power source and the second base station 2B can no longer cover the first cover area (YES in S7), the area control unit 134 proceeds to S8 and terminates tilt control of the antenna of the second base station 2B. If the area control unit 134 determines that the second remaining power amount exceeds the first threshold (NO in S7), the area control unit 134 proceeds to S5.

[0063] [Variations] In the above-described embodiment, when the remaining power storage capacity of the storage battery 3 corresponding to the second base station 2B falls below the first threshold, the area control unit 134 terminates tilt control of the antenna of the second base station 2B and terminates covering at least a part of the first coverage area, but this is not limited to this.

[0064] For example, the control unit 13 may function as a third identification unit, and when the remaining amount of stored power of the storage battery 3 corresponding to the second base station 2B falls below the first threshold, the control unit 13 may refer to the base station location information and identify the third base station 2 that is a base station 2 that can cover part of the first coverage area based on the positions of the first base station 2A and the second base station 2B. For example, the control unit 13 may refer to the base station location information and identify the third base station 2 that is a base station 2 that can cover an area that is part of the first coverage area and that was covered by the second base station 2B based on the positions of the first base station 2A and the second base station 2B.

[0065] Then, the area control unit 134 may control the coverage area of ​​the third base station identified by the control unit 13 so that the coverage area of ​​the third base station extends toward the coverage area of ​​the first base station 2A. In this way, the information processing device 1 can extend the period during which it covers the first coverage area.

[0066] [Effects of information processing device 1] As described above, the information processing device 1 according to the present embodiment refers to remaining power information indicating the remaining power of the storage batteries 3 provided in each of a plurality of base stations 2 related to wireless communication, identifies a first base station 2A that is a base station 2 corresponding to a storage battery 3 whose remaining power is below a first threshold, identifies a second base station 2B that is a base station 2 that can cover part of a first coverage area that is a coverage area for wireless communication covered by the first base station 2A based on base station location information, and controls the coverage area of ​​the identified second base station 2B so that the coverage area of ​​the second base station 2B covers at least part of the first coverage area. In this way, when a failure occurs in a base station, the information processing device 1 can prevent terminals from being unable to communicate in a complement target area complemented by another base station.

[0067] Furthermore, this invention will make it possible to contribute to Goal 9 of the United Nations' Sustainable Development Goals (SDGs), which is "Build resilient infrastructure, promote inclusive and sustainable industrialization, and promote innovation and resilience."

[0068] The present invention has been described above using embodiments, but the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. For example, all or part of the device can be configured by functionally or physically distributing or integrating any unit. Furthermore, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiments resulting from the combination also have the effects of the original embodiments. [Explanation of symbols]

[0069] 1. Information processing equipment 11 Communications Department 12 Storage section 13 Control Unit 131 Acquisition Department 132 1st Specific Part 133 Second Specific Part 134 Area Control Unit 135 Notification Department 2 base station

Claims

1. a first identification unit that refers to remaining power information indicating remaining power amounts of storage batteries that are provided in each of a plurality of base stations involved in wireless communication and that can supply power to the base station, and identifies a first base station that is a base station corresponding to a storage battery whose remaining power amount is below a first threshold; a second identification unit that identifies a second base station that is a base station that can cover a part of a first coverage area that is a coverage area where the first base station covers the wireless communication, based on base station location information that indicates a location of each of a plurality of base stations; an area control unit that controls the cover area of ​​the second base station identified by the second identification unit so that the cover area of ​​the second base station covers at least a part of the first cover area; An information processing device having the above.

2. the plurality of base stations are operated by power supplied from an external power source different from the storage battery, and are operated by power supplied from the storage battery when power is not supplied from the external power source, the second identification unit identifies, as the second base station, a base station that is supplied with power from an external power source among base stations that can cover a part of the first coverage area; The information processing device according to claim 1 .

3. when there is no base station to which power is supplied from the external power source among the base stations capable of covering a part of the first coverage area, the second identification unit identifies, from among the base stations capable of covering a part of the first coverage area, a base station having a remaining amount of power stored in a storage battery equal to or greater than a second threshold, the second threshold being a threshold greater than the first threshold, as the second base station; The information processing device according to claim 2 .

4. the second identification unit identifies a distance between the first base station and each of a plurality of base stations that can cover a part of the first coverage area based on the base station location information, and identifies the second base station from among the plurality of base stations that can cover a part of the first coverage area based on the identified distances; The information processing device according to claim 1 .

5. the second identification unit identifies a number of connected terminals, which is the number of terminals that are communicatively connected to each of a plurality of base stations that can cover a portion of the first coverage area, and identifies the second base station from among a plurality of base stations that can cover a portion of the first coverage area based on the identified number of connected terminals. The information processing device according to claim 1 .

6. a third identification unit that, when a remaining amount of stored power of a storage battery corresponding to the second base station falls below the first threshold, refers to the base station location information and identifies a third base station that is a base station that can cover a part of the first coverage area based on a location of the first base station and a location of the second base station; the area control unit controls the cover area of ​​the third base station so that the cover area of ​​the third base station identified by the third identification unit expands toward the cover area of ​​the first base station. The information processing device according to claim 1 .

7. the area control unit reduces the first cover area over time and controls the cover area of ​​the second base station so that the cover area of ​​the second base station expands toward the cover area of ​​the first base station over time. The information processing device according to claim 1 .

8. the area control unit, when a remaining amount of stored power of a storage battery corresponding to the second base station falls below the first threshold, stops control of expanding the coverage area of ​​the second base station toward the coverage area of ​​the first base station. The information processing device according to claim 1 .

9. the second identification unit identifies a location of a mobile station that is a movable base station that can communicate with a terminal, and identifies the second base station that can cover an area of ​​the first coverage area that cannot be covered by the mobile station based on the base station location information and the location of the mobile station. The information processing device according to claim 1 .

10. the area control unit acquires people flow information indicating people flow in the first cover area when a failure occurs in the first base station, identifies an area of ​​the first cover area to be covered by the second base station based on the acquired people flow information, and controls the cover area of ​​the second base station so that the cover area of ​​the second base station expands toward the identified area. The information processing device according to claim 1 .

11. a notification unit that notifies a terminal connected to the first base station of information indicating that the first base station will become unavailable; The information processing device according to claim 1 .

12. the notification unit notifies information indicating that at least a part of the first coverage area is complemented by the second base station. The information processing device according to claim 11.

13. the notification unit notifies information indicating that complement of at least a part of the first coverage area will be completed when a remaining amount of stored power of a storage battery corresponding to the second base station falls below a second threshold that is greater than the first threshold. The information processing device according to claim 11.

14. the notification unit notifies information about a coverage area of ​​a base station corresponding to a storage battery that exists within a predetermined range from the first base station and has a remaining amount of power equal to or greater than the first threshold; The information processing device according to claim 11.

15. The computer executes a step of referring to remaining power information indicating remaining power amounts of storage batteries provided in each of a plurality of base stations related to wireless communication and capable of supplying power to the base station, and identifying a first base station corresponding to a storage battery whose remaining power amount is below a first threshold; identifying a second base station that is a base station that can cover a part of a first coverage area that is a coverage area in which the first base station covers the wireless communication, based on base station location information that indicates the location of each of a plurality of base stations; controlling the coverage area of ​​the second base station so that the identified coverage area of ​​the second base station covers at least a part of the first coverage area; An information processing method comprising:

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