Base station control system, base station control device, server, and base station control method

Abstract

In order to improve equity with respect to the quality of a communication service for mobile bodies when providing the communication service from a base station to the mobile bodies, this base station control system (1) comprises: a determining means (12) that determines, on the basis of quality information, the quality of a communication service to a mobile body (30) at a second intersection that is the movement destination of the mobile body (30) and is different from a first intersection; and an instructing means (13) that instructs a second base station (20-2) that provides the communication service at the second intersection to provide the communication service on the basis of the quality determined by the determining means (12).

Description

[Technical field]

[0001] The present invention relates to a base station control system, a base station control device, a server, and a method for controlling a base station. [Background technology]

[0002] Patent Document 1 discloses a communication system in which, when allocating wireless resources to a plurality of vehicle-mounted terminals, resource allocation is performed according to the value of data to be transmitted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-140433 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, depending on the allocation format of wireless resources, an unfair allocation may occur among mobile units.

[0005] For example, since Patent Document 1 is a method for allocating wireless resources based on the value of data, there is a possibility that fairness in the quality of communication services between in-vehicle terminals, i.e., between vehicles traveling on the same road, may not be maintained. Also, if a method is adopted in which the priority of communication services is determined based on some criteria, vehicles with low priority may continue to be unable to receive services. Such problems may also occur in the case of moving objects other than vehicles.

[0006] The present invention aims to provide a base station control system, a base station control device, a server, and a base station control method that can increase the fairness of the quality of communication services to mobile devices when providing communication services from a base station to mobile devices. [Means for solving the problem]

[0007] A base station control system according to one embodiment of the present invention includes an acquisition means for acquiring quality information of a communication service provided to a mobile object passing through a first intersection from a first base station, a determination means for determining, based on the quality information, a quality of communication service for the mobile object at a second intersection located at the mobile object's destination and different from the first intersection, and an instruction means for instructing a second base station providing communication service at the second intersection to provide communication service based on the quality determined by the determination means.

[0008] A base station control device according to one embodiment of the present invention includes an acquisition means for acquiring quality information of a communication service provided to a mobile object passing through a first intersection from a first base station, a determination means for determining, based on the quality information, a quality of communication service for the mobile object at a second intersection located at the destination of the mobile object and different from the first intersection, and an instruction means for instructing a second base station providing communication service at the second intersection to provide communication service based on the quality determined by the determination means.

[0009] A server according to one embodiment of the present invention is connected to a base station control device which includes an acquisition means for acquiring quality information of a communication service provided to a mobile body that has passed through a first intersection from a first base station, a decision means for determining, based on the quality information, the quality of a communication service for the mobile body at a second intersection which is located at the destination of the mobile body and is different from the first intersection, and an instruction means for instructing a second base station providing communication services at the second intersection to provide communication services based on the quality determined by the decision means.The server acquires images from a camera installed at the first intersection, identifies the destination of the mobile body that has passed through the first intersection based on the images acquired from the camera, and provides information regarding the destination of the mobile body to the base station control device.

[0010] A base station control method according to one embodiment of the present invention obtains quality information of a communication service provided to a mobile object passing through a first intersection from a first base station, determines, based on the quality information, the quality of the communication service for the mobile object at a second intersection located at the mobile object's destination and different from the first intersection, and instructs a second base station providing communication service at the second intersection to provide communication service based on the quality determined by the determination means. Effect of the Invention

[0011] According to the present invention, when a base station provides a communication service to a mobile unit, it is possible to improve the fairness of the quality of the communication service in the mobile unit. [Brief description of the drawings]

[0012] [Figure 1] 1 is a diagram showing a configuration of a base station control system according to a first exemplary embodiment of the present invention, together with an exemplary base station and a vehicle. [Diagram 2] 1 is a diagram showing a configuration of a base station control device according to a first exemplary embodiment of the present invention, together with an exemplary base station and a vehicle. [Diagram 3] FIG. 4 is a flow chart showing the flow of a base station control method according to the first exemplary embodiment of the present invention. [Figure 4] FIG. 2 is a diagram for explaining an example of the positional relationship between a base station and a mobile object. [Diagram 5] FIG. 11 is a diagram showing a configuration of a base station control system according to a second exemplary embodiment of the present invention, together with an exemplary base station and a vehicle. [Figure 6] FIG. 11 is a diagram showing a configuration of an information processing device according to a second exemplary embodiment of the present invention, together with a peripheral configuration. [Figure 7] 11 is a diagram for explaining an example of a policy for determining communication quality of an information processing device; FIG. [Figure 8] FIG. 11 is a sequence diagram illustrating an operation of a base station control system according to a second exemplary embodiment of the present invention. [Figure 9]FIG. 11 is a diagram for explaining the operation of a base station control system according to a second exemplary embodiment of the present invention. [Figure 10] FIG. 11 is a diagram for explaining the operation of a base station control system according to a second exemplary embodiment of the present invention. [Figure 11] FIG. 11 is a diagram for explaining the operation of a base station control system according to a second exemplary embodiment of the present invention. [Figure 12] FIG. 13 is a diagram showing a configuration of an information processing device according to a third exemplary embodiment of the present invention, together with a peripheral configuration. [Figure 13] FIG. 11 is a diagram for explaining the operation of a base station control system according to a third exemplary embodiment of the present invention. [Figure 14] FIG. 11 is a diagram for explaining the operation of a base station control system according to a third exemplary embodiment of the present invention. [Figure 15] FIG. 11 is a sequence diagram showing an operation of a base station control system according to a third exemplary embodiment of the present invention. [Figure 16] FIG. 13 is a diagram showing a configuration of an information processing device according to a fourth exemplary embodiment of the present invention, together with a peripheral configuration. [Figure 17] FIG. 11 is a diagram for explaining the operation of a base station control system according to a fourth exemplary embodiment of the present invention. [Figure 18] FIG. 2 is a block diagram showing configurations of a base station control system, a base station control device, and a computer that functions as an information processing device according to each exemplary embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Example Embodiment 1 First, an exemplary embodiment 1 of the present invention will be described with reference to the drawings. This exemplary embodiment is a basic form of the exemplary embodiments described later. Note that the drawing reference symbols added to this overview are added to each element for convenience as an example to aid understanding, and are not intended to limit the present invention to the illustrated form. Also, the connection lines between blocks in the drawings and the like referred to in the following description include both bidirectional and unidirectional. The unidirectional arrows are intended to show the main signal (data) flow diagrammatically, and do not exclude bidirectionality. Also, the connection points of the input and output of each block in the drawings may be configured to include ports or interfaces, but these configurations are omitted from the illustration.

[0014] <Base station control system according to exemplary embodiment 1> 1, the base station control system 1 according to this exemplary embodiment includes an acquisition unit 11, a determination unit 12, and an instruction unit 13. The base station control system 1 is a system that determines the quality of a communication service provided to a mobile object 30 by a second base station 20-2 at a second intersection based on quality information of the communication service provided by a first base station 20-1 to the mobile object 30 that passed through a first intersection.

[0015] There are no limitations on the type of mobile object as long as it passes through an area in which a base station can provide service, and it may be, for example, a moving object such as an automobile, a mobile robot, or an AGV (Automated Guided Vehicle).

[0016] In addition, the moving object may be autonomous (not operated by an operator, etc., but using computers or AI placed on the moving object or in the cloud), remotely controlled (operated via a network by an operator not present on the moving object), or semi-autonomous (capable of both autonomous and remotely controlled control).

[0017] The acquiring means 11, the deciding means 12, and the instructing means 13 are configured to be able to communicate with each other via a network, for example. Here, the specific configuration of the network does not limit the present exemplary embodiment, but for example, a wireless LAN (Local Area Network), a wired LAN, a WAN (Wide Area Network), a public line network, a mobile data communication network, or a combination of these networks can be used.

[0018] The acquisition means 11 acquires, from the first base station 20-1, quality information of the communication service provided to the mobile object 30 that passed through the first intersection. As the quality information, in addition to QoS (Quality of Service) that directly evaluates the quality of the network, an index such as QoE (Quality of Experience) measured on the mobile object 30 side can be used.

[0019] In addition to QoS and QoE, it is possible to use radio wave strength, communication method (5G / 4G), error rate, etc. In addition, as quality information, it is also possible to use the amount of data successfully communicated between the first base station 20-1 and the mobile unit 30, the progress of communication (amount of transmitted and received data / amount of requested transmitted and received data), etc.

[0020] The determination means 12 determines the quality of communication services for the mobile body 30 at a second intersection, which is a destination of the mobile body 30 and different from the first intersection, based on the quality information of the communication services provided to the mobile body 30 that passed through the first intersection. As a method for determining the quality of this communication service, a method can be adopted in which the above-mentioned quality information is divided into levels according to its value, and the level of the (target) communication quality at the second intersection is determined according to the level of the quality after the level division.

[0021] Here, the second intersection is an intersection on a road that connects to the first intersection. As an example, the (target) communication quality at the second intersection is determined so as to have a negative correlation with the quality indicated by the quality information of the communication service provided to the mobile object 30 that passed through the first intersection.

[0022] When the quality level of the communication service provided to the mobile body 30 at the first intersection is lower than a predetermined level, the determination means 12 determines the quality of the communication service at the second intersection so as to improve the quality of the communication service at the second intersection.

[0023] For example, when the degree of progress of communication is used as the quality information, the determination means 12 predetermines the communication quality level of the communication service by setting the communication quality level of communication that is 0-30% complete as "low," the communication quality level of communication that is 31-70% complete as "medium," and the communication quality level of communication that is 71-100% complete as "high." If the communication quality level of the communication service provided to the mobile body 30 at the first intersection is "low," the determination means 12 determines the communication quality level of the communication service for the mobile body 30 at the second intersection to be "high."

[0024] Furthermore, the destination of the moving body 30 can be specified based on the lane in which the moving body 30 is located and the traveling position. For example, the determination means 12 can refer to an image from a camera installed at an intersection, and in the case of a road with left-hand traffic, estimate the traveling direction of the vehicle 30 based on whether the vehicle 30 is traveling on the left side of the road. For example, when the vehicle 30 is traveling on a lane, the determination means 12 can estimate that the vehicle 30 will turn right, and can specify the intersection where the vehicle 30 will turn right as the second intersection.

[0025] The instruction means 13 instructs the second base station 20-2 installed at the second intersection to provide a communication service based on the quality of the communication service determined by the determination means 12. The instruction of the communication service can be a method of directly or indirectly instructing the quality of the communication service.

[0026] For example, the instruction means 13 instructs the second base station 20-2 to provide a communication service including the above-mentioned communication quality level, the communication volume to be provided to the mobile unit, the band to be provided to the mobile unit, the communication means to be used, etc. Also, the instruction means 13 may instruct the second base station 20-2 to provide a communication service using the communication quality level determined by the determination means 12.

[0027] (Effects of base station control system 1) As described above, according to the base station control system 1 of this exemplary embodiment, the determination means 12 determines the quality of communication services for the mobile body 30 at a second intersection, which is the destination of the mobile body 30 and is different from the first intersection, based on quality information of the communication services provided to the mobile body 30 that passed through the first intersection. For example, if the communication quality level of the communication services provided to the mobile body 30 at the first intersection is "low," the determination means 12 determines the communication quality level of the communication services for the mobile body 30 at the second intersection to be "high." This makes it possible to improve the fairness of the quality of communication services for the mobile body 30 when the communication services are provided from the base station to the mobile body 30.

[0028] <Base station control device according to exemplary embodiment 1> FIG. 2 is a diagram showing the configuration of a base station control device according to this exemplary embodiment together with an exemplary base station and a vehicle. As shown in FIG. 2, the base station control device 10 according to this exemplary embodiment has a configuration in which the acquisition means 11, the determination means 12, and the instruction means 13 are integrated into one device. The base station control device 10 can be configured by a server installed on a cloud platform or the Internet. The base station control device 10 may also be a MEC (Multi-access Edge Computing or Mobile Edge Computing) server installed in a position close to the camera. Note that in FIG. 2, the acquisition means 11, the determination means 12, and the instruction means 13 are described as being integrated into one device, but this is not limited thereto. The acquisition means 11, the determination means 12, and the instruction means 13 may be distributed and arranged in a plurality of devices, or, for example, part or all of them may be arranged on a cloud. When they are distributed and arranged, the acquisition means 11, the determination means 12, and the instruction means 13 communicate with each other to perform their functions.

[0029] The acquisition means 11 acquires, from the first base station 20-1, quality information of the communication service provided to the mobile object 30 that passed through the first intersection. As this quality information, in addition to QoS that directly evaluates the quality of the network, an index such as QoE measured on the mobile object 30 side can be used.

[0030] The determination means 12 determines the quality of communication services for the mobile body 30 at a second intersection, which is a destination of the mobile body 30 and different from the first intersection, based on the quality information of the communication services provided to the mobile body 30 that passed through the first intersection. As a method for determining the quality of this communication service, a method can be adopted in which the above-mentioned quality information is divided into levels according to its value, and the level of the (target) communication quality at the second intersection is determined according to the level of the quality after the level division.

[0031] The instruction means 13 instructs the second base station 20-2 installed at the second intersection to provide a communication service based on the quality of the communication service determined by the determination means 12. The instruction of the communication service can be a method of directly or indirectly instructing the quality of the communication service.

[0032] (Effects of the base station control device 10) As described above, according to the base station control device 10 according to this exemplary embodiment, for example, if the communication quality level of the communication service provided to the mobile body 30 at the first intersection is "low", the decision means 12 decides the communication quality level of the communication service for the mobile body 30 at the second intersection to be "high". This makes it possible to improve the fairness of the quality of the communication service for the mobile body 30 when the communication service is provided from the base station to the mobile body 30.

[0033] <Base station control method according to exemplary embodiment 1> 3 is a flow diagram showing the flow of a base station control method according to the first exemplary embodiment of the present invention. First, the acquisition unit 11 acquires, from the first base station 20-1, quality information of the communication service provided to the mobile object 30 that has passed through the first intersection (step S001).

[0034] For example, as shown in Fig. 4, some base stations have antenna 201 installed at a low position, using traffic lights 300, etc. In the case of such a base station, vehicle 30a in Fig. 4 can communicate with relatively high quality, but vehicle 30b located behind vehicle 30a cannot receive radio waves directly from antenna 201, and may not be able to communicate well.

[0035] In addition, when the vehicles 30a and 30b are traveling at high speed, good communication may not be possible. The acquisition unit 11 acquires, from the first base station 20-1, information on the quality of the communication service provided to the mobile bodies 30a and 30b, which may be caused by the positions of the mobile bodies 30a and 30b, the presence or absence of obstacles, the speed, etc.

[0036] Next, the determination means 12 determines the quality of communication services for the mobile body 30 that has passed through the first intersection at a second intersection that is located at the destination of the mobile body 30 and different from the first intersection, based on quality information of the communication services provided to the mobile body 30 that has passed through the first intersection (step S002).

[0037] For example, if the communication quality level of the mobile body at the first intersection is low, the determination means 12 determines the communication quality level of the mobile body at the second intersection to be a higher level. Here, "lower (higher) communication quality level" is used to mean both a case where the communication quality level is lower (higher) than a predetermined threshold and a case where the communication quality level of the mobile body is relatively lower (higher) than the communication quality levels of other mobile bodies.

[0038] For example, as shown in Fig. 4, the decision means 12 decides to lower the communication quality level of the communication service at the second intersection for the vehicle 30a to which the communication service was provided at a high communication quality level at the first intersection. Also, the decision means 12 decides to raise the communication quality level of the communication service at the second intersection for the vehicle 30b to which the communication service was not provided at a high communication quality level.

[0039] Next, the instruction means 13 instructs the second base station 20-2, which provides a communication service at the second intersection, to provide the communication service based on the quality determined by the determination means 12 (step S003).

[0040] For example, the instruction means 13 instructs the second base station 20-2 to provide a communication service at a high communication quality level to the vehicle 30b. Such an instruction may be a method of instructing the base station 20-2 on the QoS of the communication for the vehicle 30b. Similarly, the instruction means 13 instructs the base station 20-2 on the QoS so that the communication quality level of the vehicle 30a is lowered.

[0041] (Effect of base station control method) As described above, according to the base station control method according to the present exemplary embodiment, for example, if the communication quality level of the communication service provided to the mobile body 30 at the first intersection is "low", the determination means 12 determines the communication quality level of the communication service for the mobile body 30 at the second intersection to be "high". This makes it possible to improve the fairness of the quality of the communication service for the mobile body 30 when the communication service is provided from the base station to the mobile body 30.

[0042] According to the present exemplary embodiment, for example, when a vehicle 30 traveling on a road communicates with a base station 20-1 around the road, it may not be able to perform the expected communication due to the influence of obstacles around the road and vehicles traveling before and after the road. Also, when the vehicle 30 traveling on the road is traveling at high speed, it is expected that the vehicle 30 will not be able to perform the necessary communication because the vehicle 30 will not stay in the service area of ​​the base station 20-1 for a short time. Even in these cases, the determining means 12 can increase the communication quality level of the moving body 30 when communicating with the next base station 20-2, thereby allowing the vehicle 30 to perform the expected communication.

[0043] [Example 2] A second exemplary embodiment of the present invention will be described in detail with reference to the drawings. Note that components having the same functions as those described in the first exemplary embodiment are given the same reference numerals, and the description thereof will be omitted as appropriate.

[0044] 5 is a diagram showing a configuration of a base station control system according to a second exemplary embodiment of the present invention, together with exemplary base stations and vehicles. The base station control system according to the second exemplary embodiment includes an information processing device 110, MECs 100-1 and 100-2, a camera 140, and base stations 200-1 and 200-2.

[0045] At each of two intersections on the same road, base stations 200-1 and 200-2, MECs 100-1 and 100-2, and a camera 140 are installed. Note that, although the two intersections are adjacent to each other in FIG. 5, the two intersections do not necessarily have to be adjacent to each other, and one or more intersections may exist between the two intersections. There are no particular restrictions on the positional relationship between the two intersections, but from the viewpoint that the second intersection must be a destination of vehicle 30b, it is preferable that the second intersection is an intersection on a road that connects to the first intersection.

[0046] The base stations 200-1 and 200-2 are connected to a core network of a telecommunications carrier (not shown) and provide communication services to mobile stations (including the vehicle-mounted terminal of the vehicle 30b) located within the service area SA of the base stations 200-1 and 200-2 installed around an intersection. For example, the base stations 200-1 and 200-2 may be base stations of a fifth generation mobile communication system (5G) installed by a telecommunications carrier, or may be base stations of a network called local 5G operated by a party other than the telecommunications carrier. The service area SA may be composed of multiple cells.

[0047] The MEC 100-1 transmits the information received from the base station 200-1 and the image obtained from the camera 140 to the information processing device 110. Similarly, the MEC 100-2 transmits the information received from the base station 200-2 and the image obtained from the camera 140 to the information processing device 110.

[0048] The camera 140 is installed near the traffic lights at the intersection and captures vehicles passing through the intersection. For example, the camera 140 may be installed near the traffic lights at the intersection, or may be installed on the side or roof of a building from which the intersection can be viewed. In this exemplary embodiment, the information processing device 110 uses the image obtained by the camera 140 to identify the traveling direction of the vehicle 30b. Note that, although FIG. 5 shows an example in which one camera is installed at each intersection, there is no limit to the number of cameras. For example, one or more cameras may be installed at each of the traffic lights at the intersection. In addition, a sensor other than the camera 140 may be used as a means for grasping the traveling direction of the vehicle.

[0049] In this exemplary embodiment, the MECs 100-1 and 100-2 transmit images obtained from the cameras 140 to the information processing device 110, but the MECs 100-1 and 100-2 may obtain images from the cameras 140 installed at the first intersection, identify the destination of the moving body that passed through the first intersection based on the images obtained from the cameras 140, and provide information regarding the destination of the moving body 30b to the information processing device (base station control device) 110. In this case, the MECs 100-1 and 100-2 transmit information regarding the traveling direction (destination) of the vehicle 30b to the information processing device 110 instead of the images obtained from the cameras 140.

[0050] 6 is a diagram showing a configuration of an information processing device 110 according to a second exemplary embodiment of the present invention together with a peripheral configuration. The information processing device 110 is connected to N MECs 100-1 to 100-N, and instructs the base stations 200-1 to 200-N on the communication quality when providing a communication service to a vehicle 30b via the MECs 100-1 and 100-N. Therefore, the information processing device 110 corresponds to the base station control device 10 described above.

[0051] As shown in FIG. 6, the information processing device 110 includes an acquisition unit 111, a decision unit 112, an instruction unit 113, a vehicle DB 114, and a base station DB 115.

[0052] The vehicle DB 114 is a database that stores information that associates the ID (SIM information such as IMSI (International Mobile Subscriber Identity)) of the vehicle-mounted terminal mounted in the vehicle with the license plate information of the vehicle. The vehicle DB 114 is referenced when identifying the vehicle (vehicle-mounted terminal) to be controlled from the license plate information of the vehicle.

[0053] The base station DB 115 is a database that stores the positional relationship between the base stations 200-1 to 200-N arranged at intersections under the management of the information processing device 110 and the intersections. The base station DB 115 stores entries that associate, for example, an intersection with information on a base station located ahead in the traveling direction from the intersection, and is referred to when the information processing device 110 determines the base station to be specified from the traveling direction of a vehicle that has passed each intersection. The positional relationship between the base stations 200-1 to 200-N and the intersections may be described using coordinate information such as latitude and longitude.

[0054] The acquisition means 111 further acquires an image of the camera 140 installed at the first intersection. Specifically, the acquisition means 111 acquires an image of the vehicle 30b that has passed the intersection from the MEC 100-1 and quality information of the communication service provided to the vehicle 30b by the base station 200-1 at the timing when the vehicle stops at the intersection or enters the intersection. The acquisition means 111 may acquire the image and quality information of the vehicle 30b at the timing when the vehicle enters within several meters of the intersection.

[0055] When the information processing device 110 identifies the vehicle 30b from the image captured by the camera 140, the information processing device 110 can, for example, recognize the license plate information of the vehicle 30b in the image captured by the camera 140. Then, the information processing device 110 refers to the vehicle DB 114 to identify the vehicle (on-board terminal) corresponding to the license plate information.

[0056] In this exemplary embodiment, the information processing device 110 is provided with a vehicle DB 114 and identifies the vehicle by referring to the vehicle DB 114, but the information processing device 110 may also request a vehicle management system on the cloud side to match the ID of the vehicle-mounted terminal with the license plate information.

[0057] In addition, when the MEC 100-1 side is to specify the vehicle and its destination (traveling direction), the MEC 100-1 side may be provided with the vehicle DB 114 and the base station DB 115. In this case, the MEC 100-1 specifies the vehicle and its destination from the license plate information of the vehicle 30b, and transmits the vehicle information and the base station information of the destination to the information processing device 110.

[0058] The determination means 112 identifies the second intersection based on the image of the moving object captured in the image. Specifically, the determination means 112 includes a traveling direction identification means 1121, a base station selection means 1122, and an instruction quality determination means 1123. The traveling direction identification means 1121 identifies the traveling direction of the vehicle 30b based on the image obtained from the camera 140. Furthermore, the base station selection means 1122 refers to the base station DB 115 and selects a base station corresponding to the second intersection to which an instruction is to be sent based on the traveling direction of the vehicle 30b.

[0059] Moreover, the instruction quality determining means 1123 determines the quality of the communication service to be provided to the vehicle 30b at the next intersection (second intersection) based on the quality information of the communication service provided by the base station 200-1 to the vehicle 30b.

[0060] Fig. 7 is a diagram for explaining an example of a communication quality determination policy that the determination means 112 refers to when determining the quality of the communication service to be provided to the vehicle 30b. In Fig. 7, when the communication quality level at the first intersection is low, the determination means 112 determines the quality of the communication service at the second intersection (the intersection where the vehicle 30b is heading) to be "high."

[0061] Moreover, if the communication quality level at the first intersection is high, the decision means 112 decides the quality of the communication service at the second intersection (the intersection at the destination of the vehicle 30b) to be "low." If the communication quality at the first intersection is "medium," the decision means 112 decides the quality of the communication service at the second intersection (the intersection at the destination of the vehicle 30b) to be "medium."

[0062] The instruction means 113 instructs the base station (for example, 200-2 in FIG. 5) determined by the determination means 112 as the destination of the instruction to provide the communication service with the quality determined by the determination means 112 to the vehicle 30b via the MEC 100-2.

[0063] Next, the operation of this exemplary embodiment will be described in detail with reference to the drawings. Fig. 8 is a sequence diagram for explaining the operation of the base station control system according to the second exemplary embodiment of the present invention. As shown in Fig. 8, the information processing device 110 acquires from the MEC 100-1 an image of the vehicle 30b that has passed through an intersection and quality information of the communication service provided by the base station 200-1 to the vehicle 30b (step S101).

[0064] Next, the information processing device 110 identifies the vehicle 30b from an image of the vehicle 30b that has passed the intersection, and further identifies the destination of the vehicle 30b (step S102). For example, the information processing device 110 can grasp the lane in which the vehicle 30b is traveling and its movement from the image of the vehicle 30b. Then, the information processing device 110 identifies the destination of the vehicle from the lane in which the vehicle 30b is located at the intersection and the movement of the vehicle, and selects a base station corresponding to a second intersection to which an instruction is to be sent, with reference to the base station DB 115. Here, it is assumed that the vehicle 30b has determined that the vehicle 30b will travel straight from right to left in FIG. 5 through the intersection where the base station 200-1 is located, and therefore the base station 200-2 has been selected, as shown in FIG. 5.

[0065] Next, the information processing device 110 determines the quality of the communication service that the base station 200-2 will provide when the vehicle 30b passes through the intersection, based on the quality information of the communication service that the base station 200-1 provided to the vehicle 30b (step S103).

[0066] Next, the information processing device 110 instructs the base station 200-2, via the MEC 100-2, on the quality of the communication service to be provided when the vehicle 30b passes through the intersection (step S104).

[0067] The MEC 100-2 transfers the instruction received from the information processing device 110 to the base station 200-2 (step S105). The base station 200-2 provides a service to the vehicle 30b in accordance with the instruction received from the information processing device 110.

[0068] Next, a specific example will be shown to explain the operation of the base station control system according to this exemplary embodiment. For example, as shown in FIG. 9, it is assumed that vehicles 30a and 30b enter the intersection on the right (first intersection) and receive communication services from the base station 200-1. At this time, it is assumed that the vehicle 30a can directly receive radio waves from the antenna of the base station 200-1 and can receive high-quality communication services. On the other hand, it is assumed that the quality of the communication services for the vehicle 30b is low because the vehicle 30a is between the vehicle 30b and the antenna of the base station 200-1.

[0069] In this case, the decision means 112 decides to raise the quality of the communication service provided by the base station 200-2 at the vehicle 30b's destination when the vehicle 30b passes through the intersection, based on the quality information of the communication service provided by the base station 200-1 to the vehicle 30b. Also, the decision means 112 decides to lower the quality of the communication service provided by the base station 200-2 at the vehicle 30a's destination when the vehicle 30a passes through the intersection, based on the quality information of the communication service provided by the base station 200-1 to the vehicle 30a.

[0070] Thereafter, as shown in FIG. 10, when vehicles 30a and 30b enter the intersection on the left side (second intersection), base station 200-2 provides communication services in accordance with instructions from instruction means 113. Specifically, base station 200-2 provides high-quality communication services to vehicle 30b. Also, base station 200-2 provides low-quality communication services to vehicle 30a. By doing so, it is possible to improve the fairness of the quality of communication services while vehicles 30a and 30b pass through the two intersections.

[0071] For example, as shown in Fig. 11, while vehicle 30b is heading from an intersection on the right (first intersection) to an intersection on the left (second intersection), vehicle 30a may pass and another vehicle 30c may cut in. In this case, too, the information processing device 110 may provide high-quality communication services to vehicle 30b. For vehicle 30c, the information processing device 110 may start collecting communication service quality information at the intersection on the left (second intersection).

[0072] (Effects of the base station control system according to the second exemplary embodiment) As described above, according to the base station control system of this exemplary embodiment, the determination means 112 identifies the second intersection based on the image of the moving object captured in the image. Therefore, the instruction means 113 can easily identify the base station corresponding to the second intersection and can instruct the provision of the communication service based on the quality determined by the determination means 112.

[0073] Third Exemplary Embodiment A third exemplary embodiment of the present invention will be described in detail with reference to the drawings. Note that components having the same functions as those described in the first and second exemplary embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

[0074] 12 is a diagram showing a configuration of a base station control system according to a third exemplary embodiment of the present invention, together with exemplary base stations and vehicles. The base station control system according to the third exemplary embodiment includes an information processing device 110a, MECs 100-1 to 100-N, a camera 140, and base stations 200-1 to 200-N.

[0075] In this exemplary embodiment, the information processing device 110a groups a plurality of vehicles and ensures the fairness of communication services within the group. The difference in configuration from the base station control system according to the second exemplary embodiment shown in Fig. 6 is that the acquisition means 111a and the decision means 112a of the information processing device 110a perform batch processing on a plurality of vehicles. Since the other configurations are the same as those of the second exemplary embodiment, the explanation will be omitted and the following will focus on the differences.

[0076] The acquisition means 111a acquires from the MEC 100-1 images of the vehicles stopped at the intersection and quality information of the communication services provided by the base station 200-1 to the vehicles.

[0077] The determination means 112a includes a group setting means 1120a, a traveling direction specification means 1121a, a base station selection means 1122a, and an instruction quality determination means 1123a. The group setting means 1120a of the determination means 112a selects and groups a plurality of moving objects traveling in the same direction as the moving object at the first intersection.

[0078] Specifically, the group setting means 1120a extracts vehicles from the image received from the MEC 100-1, groups the extracted vehicles, and sets a group (vehicle convoy group). In other words, the determination means 112a sets a plurality of vehicles stopped at an intersection as one group.

[0079] The traveling direction identification means 1121a identifies the traveling direction (destination) of this (vehicle convoy group). The base station selection means 1122a selects a base station to which to send instructions by referring to the base station DB 115. Identification of these vehicles and their destination base stations is the same as the method described in the second exemplary embodiment.

[0080] The instruction quality determination means 1123a of the determination means 112a determines the quality of the communication service for each mobile object at the second base station so that the sum of the quality levels of the communication services that each mobile object belonging to the group receives from the first base station and the second base station is equalized.

[0081] Specifically, the instruction quality determining means 1123a determines the quality of communication services to be provided to each vehicle belonging to the above group (vehicle convoy group) at the next intersection (second intersection) based on quality information of communication services provided by the base station 200-1 to the vehicles belonging to the above group (vehicle convoy group).The instruction quality determining means 1123a determines the quality of communication services to be provided to each vehicle belonging to the above group (vehicle convoy group) at the next intersection (second intersection) so that the sum (total) of communication quality levels of communication services provided to each vehicle in the group at the first and second intersections is as equal as possible.

[0082] The communication quality level can be expressed, for example, by a level determined in order from highest quality to lowest quality of the communication service provided to each vehicle. For example, in a case where five quality levels are set, with Lv5 being the highest and Lv1 being the lowest, as shown in the upper part of Fig. 13, it is assumed that the quality levels of the communication service received by the vehicles belonging to the group at the first intersection (right side of Fig. 13) vary as shown under each vehicle in Fig. 13.

[0083] In this case, the instruction quality determining means 1123a determines the quality level of the communication service to be provided at the second intersection (left side of FIG. 13) as shown in the lower part of FIG. 13. In the example of FIG. 13, the total value of the quality level of the communication service of each vehicle belonging to the group at the first and second intersections is Lv=8. Therefore, the vehicles belonging to the group can equally receive the communication service.

[0084] As shown in Fig. 14, it is assumed that the group of vehicles may change while the group of vehicles is moving from the intersection on the right (first intersection) to the intersection on the left (second intersection). In this case, the communication quality level may be set so as to maintain the fairness of the quality of the communication service among the vehicles remaining in the group. In addition, at this second intersection, the group setting means 1120a may set a new group and start collecting quality information of the communication service.

[0085] Next, the operation of the base station control system according to the present exemplary embodiment will be described in detail with reference to the drawings. Fig. 15 is a sequence diagram showing the operation of the base station control system according to the third exemplary embodiment of the present invention. As shown in Fig. 15, the acquisition means 111a of the information processing device 110a acquires from the MEC 100-1 an image of a group of vehicles stopped at an intersection and quality information of the communication service provided by the base station 200-1 to the group of vehicles (step S201).

[0086] Next, the group setting means 1120a of the information processing device 110a extracts vehicles from the image received from the MEC 100-1, groups the extracted vehicles, and sets the group (vehicle convoy group) (step S202). Next, the traveling direction identification means 1121a of the information processing device 110a identifies the traveling direction (destination) of this (vehicle convoy group) (step S203). Then, the base station selection means 1122a of the information processing device 110a refers to the base station DB 115 and selects a base station to send an instruction to.

[0087] Next, the instruction quality determination means 1123a of the information processing device 110a determines the quality of the communication service to be provided to each vehicle belonging to the above group (vehicle convoy group) based on the quality information of the communication service provided by the base station 200-1 to the vehicles belonging to the above group (vehicle convoy group) (step S204).

[0088] Next, the instruction means 113 of the information processing device 110a instructs the base station 200-2 via the MEC 100-2 on the quality of the communication service to be provided to each vehicle belonging to the group (vehicle convoy group) when the vehicle passes through the intersection (step S205).

[0089] The MEC 100-2 transfers the instruction received from the information processing device 110a to the base station 200-2 (step S206). The base station 200-2 provides services to each vehicle belonging to the group (vehicle convoy group) in accordance with the instruction received from the information processing device 110a.

[0090] (Effects of the base station control system according to the third exemplary embodiment) As described above, according to the base station control system of this exemplary embodiment, the group setting means 1120a groups the vehicle queues that inevitably occur when waiting for traffic lights at intersections, and the instruction quality determining means 1123a averages out the difference in the quality of communication services that can be enjoyed depending on the position in the queue. Therefore, when a communication service is provided from a base station to a mobile object, the fairness of the quality of the communication service for the mobile object can be improved.

[0091] Exemplary embodiment 4 A fourth exemplary embodiment of the present invention will be described in detail with reference to the drawings. Note that components having the same functions as those described in the first to third exemplary embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

[0092] 16 is a diagram showing a configuration of a base station control system according to a fourth exemplary embodiment of the present invention. The base station control system according to the fourth exemplary embodiment includes an information processing device 110b, MECs 100-1 to 100-N, a camera 140, and base stations 200-1 to 200-N.

[0093] In this exemplary embodiment, the information processing device 110b is added with a function of determining whether or not to maintain a group based on the light color of a traffic signal. The difference in configuration from the information processing device 110a according to the third exemplary embodiment shown in Fig. 12 is that the determining means 112b is added with a function of determining the light state of the traffic signal 300 captured by the camera 140 and a function of determining whether or not to maintain a group based on the determined function.

[0094] The group setting means 1120b of the decision means 112b determines whether a group is maintained at the second intersection based on the congestion state of the road between the first intersection and the second intersection and the signal control information of the traffic light at the second intersection.

[0095] Specifically, the group setting means 1120b predicts the lighting state of the traffic signal 300 when the vehicle convoy group approaches the second intersection from the image of the second intersection captured by the camera 140 acquired via the MEC 100-2, and sets the vehicle convoy group. For example, as shown in the lower part of FIG. 17, if the traffic light changes from green to red when the leading vehicle of the vehicle convoy group approaches the second intersection, the leading two vehicles may pass through the second intersection without stopping. In other words, the leading two vehicles may fall out of the vehicle convoy group, and the vehicle convoy group may not be maintained. Note that the upper part of FIG. 17 shows that the communication quality level "4" is set for all vehicles at the first intersection.

[0096] The determining means 112b according to this exemplary embodiment can additionally execute the following two processes compared to the determining means 112a according to the third exemplary embodiment shown in FIG.

[0097] (1) First, when the decision means 112b determines that the group will not be maintained at the second intersection, it stops equalizing the quality level of the communication service within the group at the second intersection and changes the communication quality level of the communication service for each vehicle.

[0098] Specifically, the decision means 112b performs a process of raising the communication quality level of the communication service provided at the second intersection to the first two vehicles that do not stop at the second intersection and pass through the second intersection, so that the first two vehicles can preferentially receive the communication service at the second intersection.

[0099] (2) Furthermore, the determination means 112b determines the communication quality level of the communication service to be provided at the second intersection for the remaining three vehicles stopped at the second intersection. Here, it is preferable that the communication quality level set for the vehicles stopped at the second intersection is lower than the communication quality level set for the first two vehicles that pass through the second intersection without stopping. In this way, it is possible to increase the possibility that the first two vehicles can receive communication services preferentially at the second intersection. Note that even if the remaining three vehicles have a low communication quality level, they stop at the second intersection and can complete communication during that time.

[0100] In the fourth exemplary embodiment, the information processing device 110b is described as grasping the light state of the traffic signal 300 from the camera image, but the method of grasping the light state of the traffic signal 300 is not limited to this. For example, the information processing device 110b can receive signal control information from a signal control device that controls the traffic signal, and estimate the light state of the traffic signal based on the value of the signal control information. In addition, if there is a control center or the like that sets control information in the signal control device, a method of grasping the light state of the signal at the intersection by acquiring signal control information of the traffic signal at a specific intersection from the control center or the like can also be adopted.

[0101] In addition, in the above exemplary embodiment 4, the information processing device 110b has been described as determining whether the group will be maintained at the second intersection based on the lighting state of the traffic light 300, but the determination may also be made taking into account the congestion status of the roads between the first intersection and the second intersection.

[0102] Specifically, the information processing device 110b grasps the congestion state of the road between the first intersection and the second intersection based on the image of the camera 140 and information provided by a traffic control center, etc. Then, for example, when the vehicle convoy group can no longer be maintained due to road congestion or the significance of leveling is lost, the leveling of the quality level of the communication service within the group at the second intersection may be stopped.

[0103] (Effects of the base station control system according to the fourth exemplary embodiment) As described above, according to the base station control system of this exemplary embodiment, the decision means 112b sets the communication quality level of the communication service at the second intersection to a more appropriate value, also taking into account the lighting state of the traffic lights at the intersection. In particular, in this exemplary embodiment, as described above, the communication quality level of the communication service between the vehicles belonging to the group can be equalized. Therefore, when distributing data to a platoon of vehicles (including autonomous vehicles), the data can be suitably distributed using the base station control system of this exemplary embodiment. For example, the communication quality can be controlled so that all of the vehicles traveling in the platoon can receive the distributed data.

[0104] Although each exemplary embodiment of the present invention has been described above, the present invention is not limited to the above exemplary embodiments, and further modifications, substitutions, and adjustments can be made without departing from the basic technical idea of ​​the present invention. For example, the system configuration, the configuration of each element, and the representation form of data, etc. shown in each drawing are examples to help understand the present invention, and are not limited to the configurations shown in these drawings. For example, in the above first to fourth exemplary embodiments, the camera 140 is described as being installed at an intersection, but the placement of the camera 140 is not limited to these. For example, a camera installed on a street or a camera installed for crime prevention purposes can also be used as the camera 140.

[0105] In addition, in each of the above exemplary embodiments, the communication quality of the communication service at the second intersection is determined based on the quality information of the communication service at the first intersection, but the communication quality of the determined communication service may be changed in consideration of the importance of data, vehicle attributes, etc., in addition to the quality information. For example, for self-driving cars and emergency vehicles, a lower limit of the quality of the provided service may be set so that a certain level is maintained.

[0106] Although no particular distinction was made in the above exemplary embodiments, it is also possible to set target values ​​for priority control and bandwidth control separately as control of the quality of communication services, and to perform control. For example, for communication that has a high priority but does not involve a large amount of data, the priority can be set to high, while the bandwidth allocation can be reduced. For communication that does not have a high priority but involves a large amount of data, the priority can be set to low, while the bandwidth allocation can be increased.

[0107] In addition, in the above exemplary embodiment, the information processing devices 110, 110a, and 110b are described as being provided independently of the MECs 100-1, 100-2 and the base stations 200-1, 200-2, but it is also possible to adopt a form in which the information processing devices 110, 110a, and 110b are integrated with the MECs or the base stations.

[0108] [Software implementation example] Some or all of the functions of the base station control system 1, the base station control device 10, and the information processing devices 110, 110a, and 110b may be realized by hardware such as an integrated circuit (IC chip), or may be realized by software.

[0109] In the latter case, the base station control system 1, the base station control device 10, and the information processing devices 110, 110a, and 110b are realized by, for example, a computer that executes instructions of a program, which is software that realizes each function. An example of such a computer (hereinafter, referred to as computer C) is shown in FIG. 18. The computer C includes at least one processor C1 and at least one memory C2. The memory C2 stores a program P for operating the computer C as the base station control system 1, the base station control device 10, and the information processing devices 110, 110a, and 110b. In the computer C, the processor C1 reads and executes the program P from the memory C2, thereby realizing each function of the base station control system 1, the base station control device 10, and the information processing devices 110, 110a, and 110b.

[0110] The processor C1 may be, for example, a central processing unit (CPU), a graphic processing unit (GPU), a digital signal processor (DSP), a micro processing unit (MPU), a floating point number processing unit (FPU), a physics processing unit (PPU), a microcontroller, or a combination of these. The memory C2 may be, for example, a flash memory, a hard disk drive (HDD), a solid state drive (SSD), or a combination of these.

[0111] The computer C may further include a RAM (Random Access Memory) for expanding the program P during execution and for temporarily storing various data. The computer C may further include a communication interface for transmitting and receiving data to and from other devices. The computer C may further include an input / output interface for connecting input / output devices such as a keyboard, a mouse, a display, and a printer.

[0112] Furthermore, the program P can be recorded on a non-transitory tangible recording medium M that can be read by the computer C. Such a recording medium M can be, for example, a tape, a disk, a card, a semiconductor memory, or a programmable logic circuit. The computer C can obtain the program P via such a recording medium M. Furthermore, the program P can be transmitted via a transmission medium. Such a transmission medium can be, for example, a communication network or broadcast waves. The computer C can also obtain the program P via such a transmission medium.

[0113] [Additional Note 1] The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the claims. For example, embodiments obtained by appropriately combining the technical means disclosed in the above-described embodiment are also included in the technical scope of the present invention.

[0114] [Additional Note 2] Some or all of the above-described embodiments can be described as follows. However, the present invention is not limited to the following described aspects.

[0115] (Appendix 1) an acquisition means for acquiring, from the first base station, information on the quality of a communication service provided to a mobile object that has passed through the first intersection; a determination means for determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; and an instruction means for instructing a second base station providing a communication service at the second intersection to provide the communication service based on the quality determined by the determination means.

[0116] Base station control system.

[0117] According to the above configuration, for example, if the communication quality level of the communication service provided to the mobile body at the first intersection is "low," the determination means determines the communication quality level of the communication service for the mobile body at the second intersection to be "high." This makes it possible to improve the fairness of the quality of the communication service for the mobile body when the communication service is provided from the base station to the mobile body.

[0118] (Appendix 2) The base station control system according to claim 1, wherein the second intersection is an intersection on a road connected to the first intersection.

[0119] (Appendix 3) The base station control system described in Appendix 1 or 2, wherein the determination means determines the quality of the communication service at the second intersection so as to improve the quality of the communication service at the second intersection when the quality level of the communication service provided to the mobile object at the first intersection is low.

[0120] According to the above configuration, when a communication service is provided from a base station to a mobile unit, it is possible to improve the fairness of the quality of the communication service to the mobile unit.

[0121] (Appendix 4) The acquisition means further acquires an image from a camera installed at the first intersection, The base station control system according to any one of claims 1 to 3, wherein the determination means identifies the second intersection based on an image of a moving object captured in the image.

[0122] According to the above configuration, the instruction means can easily identify the base station corresponding to the second intersection, and can instruct the provision of a communication service based on the quality determined by the determination means.

[0123] (Appendix 5) The determining means is selecting a plurality of moving objects traveling in the same direction as the moving object at the first intersection and setting a group; determining a quality of communication service for each mobile unit in the second base station so that a sum of quality levels of communication services received by each mobile unit belonging to the group from the first base station and the second base station is equalized; 5. A base station control system according to any one of claims 1 to 4.

[0124] According to the above configuration, when a communication service is provided from a base station to a mobile unit, it is possible to improve the fairness of the quality of the communication service to the mobile unit.

[0125] (Appendix 6) The determining means is determining whether the group is maintained at the second intersection based on a traffic congestion state of a road between the first intersection and the second intersection and signal control information of a traffic signal at the second intersection; The base station control system of claim 5, wherein when the group setting means determines that the group is not maintained at the second intersection, it stops leveling out the quality level of the communication service within the group at the second intersection.

[0126] (Appendix 7) an acquisition means for acquiring, from the first base station, information on the quality of a communication service provided to a mobile object that has passed through the first intersection; a determination means for determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; and an instruction means for instructing a second base station providing a communication service at the second intersection to provide the communication service based on the quality determined by the determination means.

[0127] Base station controller.

[0128] According to the above configuration, for example, if the communication quality level of the communication service provided to the mobile body at the first intersection is "low," the determination means determines the communication quality level of the communication service for the mobile body at the second intersection to be "high." This makes it possible to improve the fairness of the quality of the communication service for the mobile body when the communication service is provided from the base station to the mobile body.

[0129] (Appendix 8) 8. The base station control device according to claim 7, wherein the second intersection is an intersection on a road connected to the first intersection.

[0130] (Appendix 9) The base station control device described in Appendix 7 or 8, wherein the determination means determines the quality of the communication service at the second intersection so as to improve the quality of the communication service at the second intersection when the quality level of the communication service provided to the mobile object at the first intersection is low.

[0131] According to the above configuration, when a communication service is provided from a base station to a mobile unit, it is possible to improve the fairness of the quality of the communication service to the mobile unit.

[0132] (Appendix 10) The acquisition means further acquires an image from a camera installed at the first intersection, The base station control device according to any one of appendices 7 to 9, wherein the determining means identifies the second intersection based on an image of a moving object captured in the image.

[0133] According to the above configuration, the instruction means can easily identify the base station corresponding to the second intersection, and can instruct the provision of a communication service based on the quality determined by the determination means.

[0134] (Appendix 11) The determining means is selecting a plurality of moving objects traveling in the same direction as the moving object at the first intersection and setting a group; The base station control device according to any one of appendices 7 to 10, which determines a quality of communication service for each mobile object at the second base station so that a sum of quality levels of communication services that each mobile object belonging to the group receives from the first base station and the second base station is equalized.

[0135] According to the above configuration, when a communication service is provided from a base station to a mobile unit, it is possible to improve the fairness of the quality of the communication service to the mobile unit.

[0136] (Appendix 12) The determining means is determining whether the group is maintained at the second intersection based on a traffic congestion state of a road between the first intersection and the second intersection and signal control information of a traffic signal at the second intersection; The base station control device according to claim 11, wherein, when it is determined that the group is not maintained at the second intersection, the base station control device stops leveling the quality level of the communication service within the group at the second intersection.

[0137] (Appendix 13) an acquisition means for acquiring, from the first base station, information on the quality of a communication service provided to a mobile object that has passed through the first intersection; a determination means for determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; an instruction means for instructing a second base station providing a communication service at the second intersection to provide the communication service based on the quality determined by the determination means, Acquire an image from a camera installed at the first intersection; A server that identifies a destination of a moving object that has passed through the first intersection based on an image acquired from the camera, and provides information regarding the destination of the moving object to the base station control device.

[0138] According to the above configuration, for example, if the communication quality level of the communication service provided to the mobile body at the first intersection is "low," the determination means determines the communication quality level of the communication service for the mobile body at the second intersection to be "high." This makes it possible to improve the fairness of the quality of the communication service for the mobile body when the communication service is provided from the base station to the mobile body.

[0139] (Appendix 14) acquiring, from a first base station, quality information of a communication service provided to a mobile object that has passed through a first intersection; determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; instructing a second base station providing a communication service at the second intersection to provide the communication service based on the determined quality; A method for controlling a base station.

[0140] According to the above configuration, for example, if the communication quality level of the communication service provided to the mobile body at the first intersection is "low," the communication quality level of the communication service for the mobile body at the second intersection is determined to be "high." This makes it possible to improve the fairness of the quality of the communication service for the mobile body when the communication service is provided from the base station to the mobile body.

[0141] (Appendix 15) 15. The base station control method according to claim 14, wherein the second intersection is an intersection on a road connected to the first intersection.

[0142] (Appendix 16) In the process of determining, A base station control method as described in Appendix 14 or 15, wherein, when the quality level of the communication service provided to the mobile object at the first intersection is low, the quality of the communication service at the second intersection is determined so as to improve the quality of the communication service at the second intersection.

[0143] According to the above configuration, when a communication service is provided from a base station to a mobile unit, it is possible to improve the fairness of the quality of the communication service to the mobile unit.

[0144] (Appendix 17) In the acquiring process, Further acquiring an image from a camera installed at the first intersection; In the process of determining, 17. A base station control method according to any one of claims 14 to 16, further comprising identifying the second intersection based on an image of a moving object captured in the image.

[0145] According to the above configuration, it is possible to easily identify the base station corresponding to the second intersection, and to instruct the provision of a communication service based on the determined quality.

[0146] (Appendix 18) In the process of determining, selecting a plurality of moving objects traveling in the same direction as the moving object at the first intersection and setting a group; A base station control method according to any one of appendices 14 to 17, which determines the quality of communication services for each mobile object at the second base station so that the sum of the quality levels of communication services that each mobile object belonging to the group receives from the first base station and the second base station is equalized.

[0147] According to the above configuration, when a communication service is provided from a base station to a mobile unit, it is possible to improve the fairness of the quality of the communication service to the mobile unit.

[0148] (Appendix 19) In the process of determining, determining whether the group is maintained at the second intersection based on a traffic congestion state of a road between the first intersection and the second intersection and signal control information of a traffic signal at the second intersection; A base station control method as described in Appendix 18, further comprising: discontinuing the leveling of the quality level of communication services within the group at the second intersection when it is determined that the group is not maintained at the second intersection.

[0149] (Appendix 20) The method includes: acquiring, from a first base station, quality information of a communication service provided to a mobile object that has passed through a first intersection; determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; instructing a second base station providing a communication service at the second intersection to provide the communication service based on the determined quality; A base station control system that executes the above.

[0150] The base station control system may further include a memory, and the memory may store a program for causing the processor to execute the acquiring process, the determining process, and the instructing process. The program may be recorded in a computer-readable, non-transitory, tangible recording medium.

[0151] (Appendix 21) The method includes: acquiring, from a first base station, quality information of a communication service provided to a mobile object that has passed through a first intersection; determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; instructing a second base station providing a communication service at the second intersection to provide the communication service based on the determined quality; A base station controller that executes the above.

[0152] The base station control device may further include a memory, and the memory may store a program for causing the processor to execute the acquiring process, the determining process, and the instructing process. The program may be recorded in a computer-readable, non-transitory, tangible recording medium. [Explanation of symbols]

[0153] 1 Base Station Control System 10 Base Station Control Device 11 Acquisition method 12 Decision-making procedures 13 Instruction means 20-1 First base station 20-2 Second base station 30 Mobile 30a~30c Vehicles 100-1~100-N MEC 110, 110a, 110b Information processing device 111, 111a Acquisition method 112, 112a, 112b Determination means 113 Instruction means 114 Vehicle DB 115 Base station DB 140 Camera 200-1~200-N Base station 201 Antenna 300 Traffic lights 1120a, 1120b Group setting means 1121, 1121a Traveling direction identification means 1122, 1122a Base station selection means 1123, 1123a Instruction quality determination means SA service area

Claims

1. an acquisition means for acquiring, from the first base station, information on the quality of a communication service provided to a mobile object that has passed through the first intersection; a determination means for determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; and an instruction means for instructing a second base station providing a communication service at the second intersection to provide the communication service based on the quality determined by the determination means. Base station control system.

2. The base station control system according to claim 1 , wherein the second intersection is an intersection on a road that connects to the first intersection.

3. The base station control system according to claim 1 or 2, wherein the determination means determines the quality of the communication service at the second intersection so as to improve the quality of the communication service at the second intersection when the quality level of the communication service provided to the mobile object at the first intersection is low.

4. The acquisition means further acquires an image from a camera installed at the first intersection, The base station control system according to claim 1 , wherein the determining means identifies the second intersection based on an image of a moving object captured in the image.

5. The determining means is selecting a plurality of moving objects traveling in the same direction as the moving object at the first intersection and setting a group; 5. A base station control system according to claim 1, further comprising: determining a quality of communication service for each mobile unit at the second base station so that a sum of quality levels of communication services received by each mobile unit belonging to the group from the first base station and the second base station is equalized.

6. The determining means is determining whether the group is maintained at the second intersection based on a traffic congestion state of a road between the first intersection and the second intersection and signal control information of a traffic signal at the second intersection; The base station control system according to claim 5 , wherein when it is determined that the group is not maintained at the second intersection, the leveling of the quality level of the communication service within the group at the second intersection is discontinued.

7. an acquisition means for acquiring, from the first base station, information on the quality of a communication service provided to a mobile object that has passed through the first intersection; a determination means for determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; and an instruction means for instructing a second base station providing a communication service at the second intersection to provide the communication service based on the quality determined by the determination means. Base station controller.

8. The base station control device according to claim 7 , wherein the second intersection is an intersection on a road connected to the first intersection.

9. 9. The base station control device according to claim 7 or 8, wherein the determination means determines the quality of the communication service at the second intersection so as to improve the quality of the communication service at the second intersection when the quality level of the communication service provided to the mobile object at the first intersection is low.

10. The acquisition means further acquires an image from a camera installed at the first intersection, The base station control device according to claim 7 , wherein the determining means identifies the second intersection based on an image of a moving object captured in the image.

11. The determining means is selecting a plurality of moving objects traveling in the same direction as the moving object at the first intersection and setting a group; 11. The base station control device according to claim 7, further comprising: determining a quality of communication service for each mobile unit at the second base station such that a sum of quality levels of communication services received by each mobile unit belonging to the group from the first base station and the second base station is equalized.

12. The determining means is determining whether the group is maintained at the second intersection based on a traffic congestion state of a road between the first intersection and the second intersection and signal control information of a traffic signal at the second intersection; The base station control device according to claim 11, wherein when it is determined that the group is not maintained at the second intersection, the base station control device stops leveling the quality level of the communication service within the group at the second intersection.

13. an acquisition means for acquiring, from the first base station, information on the quality of a communication service provided to a mobile object that has passed through the first intersection; a determination means for determining a quality of communication service for the mobile object at a second intersection, which is a destination of the mobile object and different from the first intersection, based on the quality information; an instruction means for instructing a second base station providing a communication service at the second intersection to provide the communication service based on the quality determined by the determination means, the second base station being connected to a base station control device; Acquiring an image from a camera installed at the first intersection; A server that identifies a destination of a mobile object that has passed through the first intersection based on an image acquired from the camera, and provides information regarding the destination of the mobile object to the base station control device.

14. acquiring, from the first base station, quality information of a communication service provided to a mobile object that has passed through the first intersection; determining a quality of communication service for the mobile unit at a second intersection, which is a destination of the mobile unit and different from the first intersection, based on the quality information; instructing a second base station providing a communication service at the second intersection to provide the communication service based on the determined quality; A method for controlling a base station.

15. The base station control method according to claim 14, wherein the second intersection is an intersection on a road connected to the first intersection.

16. In the process of determining, 16. A base station control method according to claim 14 or 15, further comprising determining a quality of communication service at the second intersection so as to improve the quality of communication service at the second intersection when the quality level of the communication service provided to the mobile object at the first intersection is low.

17. In the acquiring process, Further acquiring an image from a camera installed at the first intersection; In the process of determining, The base station control method according to claim 14 , further comprising identifying the second intersection based on an image of a moving object captured in the image.

18. In the process of determining, selecting a plurality of moving objects traveling in the same direction as the moving object at the first intersection and setting a group; 18. The base station control method according to claim 14, further comprising determining a quality of communication service for each mobile unit at the second base station so that a sum of quality levels of communication services received by each mobile unit belonging to the group from the first base station and the second base station is equalized.

19. In the process of determining, determining whether the group is maintained at the second intersection based on a traffic congestion state of a road between the first intersection and the second intersection and signal control information of a traffic signal at the second intersection; The base station control method according to claim 18, further comprising: ceasing to equalize the quality level of the communication service within the group at the second intersection when it is determined that the group is not maintained at the second intersection.

Images