Delivery of movement warning information to communication instruments moving together with mobile station

Abstract

A communication control device 3 comprises at least one processor that executes: acquiring emergency information relating to a first emergency information delivery area EA1 in which a movable mobile station MS is present by an emergency information acquisition unit 34; identifying mobile communication instruments 2M-1, 2M-2, 2M-3 moving together with the mobile station MS by a mobile communication instrument identification unit 32; generating movement warning information relating to the emergency information by a movement warning information generation unit 35, the movement warning information relating to movement of at least one among the mobile station MS and the mobile communication instruments 2M-1, 2M-2, 2M-3; and delivering the movement warning information from the mobile station MS to the mobile communication instruments 2M-1, 2M-2, 2M-3 by an information delivery unit 38.

Description

Delivery of movement warning information to communication devices moving together with mobile stations

[0001] TECHNICAL FIELD This disclosure relates to the delivery of movement warning information to communicators traveling with mobile stations.

[0002] The number, types, and uses of wireless communication devices (hereinafter referred to as communication devices), such as smartphones and Internet of Things (IoT) devices, are steadily increasing, and wireless communication standards are continually being expanded and improved. For example, commercial service for the fifth-generation mobile communication system, known as "5G," began in 2018, and standardization is still underway at the Third Generation Partnership Project (3GPP). Efforts are also underway to develop standards for the sixth-generation mobile communication system, or "6G," as the next-generation wireless communication standard following 5G.

[0003] US Patent Application Publication No. 2021 / 0168643

[0004] In mobile communication systems, emergency information distribution areas are set up where emergency information such as disasters like earthquakes and tsunamis is distributed simultaneously. Here, emergency information distribution areas are generally set up in units of administrative divisions such as cities, wards, towns, and villages, so only summary information common to each administrative division is allowed to be distributed.

[0005] The present disclosure has been made in consideration of such circumstances, and provides a communication control device and the like that can deliver information that is highly relevant to communication devices in an emergency.

[0006] A communication control device of one aspect of the present disclosure includes at least one processor that performs the following operations: acquiring emergency information regarding an emergency information distribution area in which a mobile station is located using an emergency information acquisition unit; identifying a mobile communication device that moves together with the mobile station using a mobile communication device identification unit; generating movement warning information regarding the emergency information, the movement warning information regarding the movement of at least one of the mobile station and the mobile communication device, using a movement warning information generation unit; and distributing the movement warning information from the mobile station to the mobile communication device using an information distribution unit.

[0007] According to this aspect, in an emergency such as when emergency information is to be distributed simultaneously, movement warning information regarding movement is distributed from the mobile station to the mobile communication device traveling together with the mobile station. This movement warning information is more relevant to the mobile communication device than emergency information distributed simultaneously within the emergency information distribution area.

[0008] Another aspect of the present disclosure is a communication control method, which is executed by at least one processor to acquire emergency information related to an emergency information distribution area in which a mobile station is located, identify a mobile communication device that moves together with the mobile station, generate movement warning information related to the emergency information, the movement warning information being related to movement of at least one of the mobile station and the mobile communication device, and distribute the movement warning information from the mobile station to the mobile communication device.

[0009] Yet another aspect of the present disclosure is a storage medium storing a communication control program that causes at least one processor to acquire emergency information related to an emergency information distribution area in which a mobile mobile station is located, identify a mobile communication device that moves together with the mobile station, generate movement warning information related to the emergency information, the movement warning information being related to movement of at least one of the mobile station and the mobile communication device, and distribute the movement warning information from the mobile station to the mobile communication device.

[0010] Any combination of the above components, or any conversion of these expressions into methods, devices, systems, recording media, computer programs, etc., are also encompassed within the present disclosure.

[0011] According to the present disclosure, information that is highly relevant to a communication device can be distributed in an emergency.

[0012] The present invention relates to a wireless communication system including a communication control device, a location information acquisition unit, an emergency information distribution area setting unit ...

[0013] Hereinafter, with reference to the drawings, a detailed description will be given of a form for carrying out the present disclosure (hereinafter also referred to as an embodiment). In the description and / or drawings, the same or equivalent components, members, processes, etc. are designated by the same reference numerals, and redundant description will be omitted. The scale and shape of each part shown in the drawings are set for convenience to simplify the description, and should not be interpreted as limiting unless otherwise specified. The embodiment is an example and does not limit the scope of the present disclosure in any way. All features and combinations thereof presented in the embodiments are not necessarily essential to the present disclosure.

[0014] For convenience, the embodiments are presented by breaking down the embodiments into components for each function and / or each group of functions that realize the functions. However, one component in the embodiments may actually be realized by a combination of multiple separate components, or multiple components in the embodiments may actually be realized by a single integrated component. Furthermore, in describing the wireless communication system in the present embodiments, terminology in existing wireless communication standards such as 5G is used for convenience. This is not intended to limit the present disclosure to 5G or the like, and does not prevent the present disclosure from being applied when a technology similar to the present disclosure is provided under a different name in future wireless communication systems such as 6G.

[0015] FIG. 1 schematically illustrates an overview of a wireless communication system 1 to which a communication control device according to an embodiment of the present disclosure is applied. The wireless communication system 1 includes a 5G wireless communication system 11, a 4G wireless communication system 12, and a satellite communication system 13. The 5G wireless communication system 11 conforms to a fifth-generation mobile communication system (5G) that uses NR (New Radio) or 5G NR (Fifth Generation New Radio) as a radio access technology (RAT) and 5GC (Fifth Generation Core) as a core network (CN). The 4G wireless communication system 12 conforms to a fourth-generation mobile communication system (4G) that uses LTE (Long Term Evolution) or LTE-Advanced as a radio access technology and EPC (Evolved Packet Core) as a core network. The satellite communication system 13 is responsible for satellite communication via a communication satellite 131. Although not shown, the wireless communication system 1 may include a wireless communication system of a generation earlier than 4G, a wireless communication system of a generation later than 5G (such as 6G), or any wireless communication system that cannot be associated with a generation such as Wi-Fi (registered trademark). Furthermore, the wireless communication system 1 may not include some or all of the 5G wireless communication system 11, the 4G wireless communication system 12, and the satellite communication system 13.

[0016] The 5G wireless communication system 11 includes communication devices 2A, 2B, 2C, and 2D (hereinafter collectively referred to as communication devices 2) such as smartphones that are installed on the ground and are also referred to as UE (User Equipment) or UT (User Terminal), and multiple 5G base stations 111A, 111B, and 111C (hereinafter collectively referred to as 5G base stations 111) that can communicate via 5G NR. The base station 111 in 5G is also called a gNodeB (gNB). The communication range or support range of each of the 5G base stations 111A, 111B, and 111C is called a cell, and is illustrated as 112A, 112B, and 112C, respectively (hereinafter collectively referred to as 5G cells 112).

[0017] The size of the 5G cell 112 of each 5G base station 111 is arbitrary, but typically has a radius of several meters to several tens of kilometers. Although there is no established definition, a cell with a radius of several meters to several tens of meters is called a femtocell, a cell with a radius of tens to several tens of meters is called a picocell, a cell with a radius of several tens to several hundred meters is called a microcell, and a cell with a radius of more than several hundred meters is called a macrocell. 5G often uses high-frequency radio waves such as millimeter waves, and because of their high line-propagation ability, the radio waves are blocked by obstacles, shortening the communication distance. For this reason, 5G tends to use smaller cells than 4G and earlier generations.

[0018] A communication device 2 can perform 5G communication if it is located within at least one of multiple 5G cells 112A, 112B, and 112C. In the illustrated example, a communication device 2B located within 5G cells 112A and 112B can communicate with both 5G base stations 111A and 111B via 5G NR. Furthermore, a communication device 2C located within 5G cell 112C can communicate with 5G base station 111C via 5G NR. Communication devices 2A and 2D are located outside all of the 5G cells 112A, 112B, and 112C and are therefore unable to communicate via 5G NR. 5G communication via 5G NR between each communication device 2 and each 5G base station 111 is managed by the 5GC, which is a core network. For example, the 5GC handles data exchange with each 5G base station 111, data exchange with external networks such as EPC, satellite communication system 13, and the Internet, and mobility management of the communication device 2.

[0019] The 4G wireless communication system 12 includes multiple 4G base stations 121 (only one is shown in FIG. 1 ). The multiple 4G base stations 121 are installed on the ground and are capable of communicating with the communication device 2 via LTE or LTE-Advanced. In 4G, the base station 121 is also called an eNodeB (eNB). Like each 5G base station 111, the communication range or support area of ​​each 4G base station 121 is also called a cell, and is illustrated as 122.

[0020] If the communication device 2 is located inside the 4G cell 122, it can perform 4G communication. In the illustrated example, communication devices 2A and 2B located inside the 4G cell 122 can communicate with the 4G base station 121 via LTE or LTE-Advanced. Communication devices 2C and 2D are located outside the 4G cell 122 and therefore cannot communicate via LTE or LTE-Advanced. 4G communication by LTE or LTE-Advanced between each communication device 2 and each 4G base station 121 is managed by the EPC, which is a core network. For example, the EPC handles the exchange of data with each 4G base station 121, the exchange of data with external networks such as 5GC, the satellite communication system 13, and the Internet, and the mobility management of the communication device 2.

[0021] Focusing on each of the communication devices 2A, 2B, 2C, and 2D, in the illustrated example, communication device 2A is capable of 4G communication with 4G base station 121, communication device 2B is capable of 5G communication with 5G base stations 111A and 111B and 4G communication with 4G base station 121, and communication device 2C is capable of 5G communication with 5G base station 111C. When there are multiple base stations (111A, 111B, 121) with which communication is possible, as with communication device 2B, one base station determined to be optimal in terms of communication quality, etc. is selected under the management of the core network 5GC and / or EPC, and communication with communication device 2B is performed. Furthermore, communication device 2D is not capable of communication with any of the 5G base stations 111 and 4G base station 121, and therefore performs communication via satellite communication system 13, which will be described next.

[0022] The satellite communication system 13 is a wireless communication system that uses a communication satellite 131, a low-orbit satellite that flies in space at an altitude of approximately 500 km to 700 km above the Earth's surface, as a non-terrestrial base station. Similar to the 5G base station 111 and the 4G base station 121, the communication coverage or support area of ​​the communication satellite 131 is also called a cell and is illustrated as 132. In this way, the communication satellite 131, as a non-terrestrial base station, provides the satellite communication cell 132, as a non-terrestrial communication cell, to the ground. A terrestrial communication device 2 can perform satellite communication if it is located within the satellite communication cell 132. Similar to the 5G base station 111 in the 5G wireless communication system 11 and the 4G base station 121 in the 4G wireless communication system 12, the communication satellite 131, as a base station in the satellite communication system 13, can wirelessly communicate with the communication device 2 within the satellite communication cell 132 directly or indirectly via an aircraft or the like. The radio access technology that the communication satellite 131 uses for radio communication with the communication device 2 in the satellite communication cell 132 may be 5G NR, the same as the 5G base station 111, or LTE or LTE-Advanced, the same as the 4G base station 121, or any other radio access technology that can be used by the communication device 2. Therefore, the communication device 2 does not need to be provided with special functions or components for satellite communication.

[0023] The satellite communication system 13 includes a gateway 133 as a ground station installed on the ground and capable of communicating with a communication satellite 131. The gateway 133 includes a satellite antenna for communicating with the communication satellite 131, and is connected to a 5G base station 111 and a 4G base station 121 as terrestrial base stations constituting a terrestrial network (TN) via their respective wireless access technologies, such as 5G NR or LTE, or other wired or wireless access technologies or interfaces. In this way, the gateway 133 connects the non-terrestrial network (NTN) constituted by the communication satellite 131 as a non-terrestrial base station or satellite base station and the TN constituted by the terrestrial base stations 111 and 121 so that they can communicate with each other. When the communication satellite 131 performs 5G communication with the communication device 2 in the satellite communication cell 132 using 5G NR, the 5GC connected via the gateway 133 and the 5G base station 111 (or a 5G radio access network) in the TN is used as the core network, and when the communication satellite 131 performs 4G communication with the communication device 2 in the satellite communication cell 132 using LTE or LTE-Advanced, the EPC connected via the gateway 133 and the 4G base station 121 (or a 4G radio access network) in the TN is used as the core network. In this way, appropriate cooperation is achieved between different wireless communication systems such as 5G communication, 4G communication, and satellite communication via the gateway 133.

[0024] Satellite communication using a communication satellite 131 is primarily used to cover areas where terrestrial base stations such as the 5G base station 111 and the 4G base station 121 are not installed or are few in number. In the illustrated example, a communication device 2D located outside the communication cells of all terrestrial base stations communicates with the communication satellite 131. Meanwhile, communication devices 2A, 2B, and 2C that can communicate satisfactorily with any terrestrial base station are also within the satellite communication cell 132 and can therefore communicate with the communication satellite 131. However, by communicating with the terrestrial base station rather than the communication satellite 131 as a satellite base station, the limited communication resources (including power) of the communication satellite 131 are conserved for the communication device 2D and the like. The communication satellite 131 improves the quality of communication with the communication device 2D by directing communication radio waves toward the communication device 2D within the satellite communication cell 132 using beamforming.

[0025] The size of the satellite communication cell 132 of the communication satellite 131 serving as a satellite base station can be set arbitrarily depending on the number of beams emitted by the communication satellite 131. For example, a maximum of 2,800 beams can be combined to form a satellite communication cell 132 with a diameter of approximately 24 km. As shown in the figure, the satellite communication cell 132 is typically larger than terrestrial communication cells such as the 5G cell 112 and the 4G cell 122, and may include one or more 5G cells 112 and / or 4G cells 122 therein. Note that, although the above example illustrates a communication satellite 131 flying in low orbit at an altitude of approximately 500 km to 700 km above the Earth's surface as a flying non-terrestrial base station, a communication satellite flying in high orbit such as a geostationary orbit, or an unmanned or manned aircraft or drone flying in the atmosphere at a lower altitude (e.g., approximately 20 km above the Earth's surface) such as the stratosphere, may also be used as a non-terrestrial base station in addition to or instead of the communication satellite 131.

[0026] FIG. 2 schematically illustrates the overall configuration of a wireless communication system 1 to which a communication control device according to an embodiment of the present disclosure is applied. As illustrated in FIG. 1 , the wireless communication system 1 is typically constructed using terrestrial communication cells 112 and 122 (hereinafter also referred to as fixed communication cells) provided by terrestrial base stations 111 and 121 (hereinafter also referred to as fixed base stations) that are fixedly installed on the ground. However, there are problems in that mobile communication is not possible outside the fixed communication cells, and even within the fixed communication cells, the quality of mobile communication degrades depending on the time and location. The wireless communication system 1 may also include a satellite communication system 13 in which a communication satellite 131 is used as a non-terrestrial base station or a mobile base station. However, it is unrealistic to supplement the terrestrial network of the terrestrial base stations 111 and 121 solely with the communication satellite 131.

[0027] To solve this problem, it is preferable to introduce a mobile station MS to supplement the fixed communication cells 112, 122 provided by the fixed base stations 111, 121, as shown schematically in Figure 2. A mobile station MS that is mobile can provide a dynamic communication cell that can vary in space and / or time to the communicator 2. For example, a moving mobile station MS provides a dynamic communication cell that varies in space (i.e., moves).

[0028] The mobile station MS may be, for example, a communication station whose operating time is limited to a specific time period, or an on-demand communication station that adaptively switches between a stopped state and an operating state according to the communication demand of the communication device 2, etc. The mobile station MS may also be a small base station that can independently provide a preferably small communication cell such as a femtocell, picocell, or microcell without relying on other large base stations such as terrestrial base stations 111, 121 fixedly installed on the ground or communication satellite 131, or may be a relay station that communicates with an existing base station or parent base station 111, 121, 131 (not shown in FIG. 2 ) to expand the existing communication cell or parent communication cell 112, 122, 132 (not shown in FIG. 2 ). The mobile station MS in the examples of FIGS. 2 and 3 is an IAB (Integrated Access and Backhaul) node or MBSR (Mobile Base Station Relay) that functions as a relay station.

[0029] IAB is a technology developed for 5G that uses wireless backhaul between a base station serving as an IAB donor (parent node) and an IAB node (child node), and / or between parent-child IAB nodes (the IAB node closest to the IAB donor is the parent node, and the IAB node farther from the IAB donor is the child node) to expand the communication cell of the parent node. Here, "expanding the communication cell" not only refers to expanding the area covered by an existing communication cell, but also includes improving the communication quality of at least part of the existing communication cell. Furthermore, "expanding the area covered by a communication cell" not only refers to expanding the horizontal area of ​​the existing communication cell, but also includes expanding the existing communication cell vertically, for example, underground or to the upper and / or lower floors of a building.

[0030] 2 , the mobile station MS as an IAB node includes a communication device function unit 41 that functions as a communication device for parent nodes (parent base stations) including the fixed base stations 111 and 121, and a base station function unit 42 that functions as a child base station for the communication device 2 and provides a mobile communication cell or a relay communication cell. In 5G, the communication device function unit 41 is defined as an MT (Mobile Termination) or IAB-MT, and the base station function unit 42 is defined as a DU (Distributed Unit) or IAB-DU. Note that, in other wireless communication systems including generations after 5G, including a CU (Central Unit) described later, it is assumed that functions similar to IAB, MT, DU, and CU are provided under different names, but in this embodiment, such similar functions may be used as IAB, MT, DU, and CU.

[0031] FIG. 2 illustrates two fixed base stations 111 and 121. The first fixed base station 121, which is a 4G base station, provides a first fixed communication cell 122 as a 4G cell, and the second fixed base station 111, which is a 5G base station, provides a second fixed communication cell 112 as a 5G cell. In the example of FIG. 2, the baseband function of each fixed base station 111 and 121 is divided into a centralized unit (CU) on the core network CN side and a distributed unit (DU) on the communication device 2 side. The first distributed unit DU1 of the first fixed base station 121 is provided near radio equipment such as an antenna of the first fixed base station 121, typically in the same base station facility as the radio equipment. The second distributed unit DU2 of the second fixed base station 111 is provided near radio equipment such as an antenna of the second fixed base station 111, typically in the same base station facility as the radio equipment. In the illustrated example, the aggregation unit CU is shared by the first fixed base station 121 (first distributed unit DU1) and the second fixed base station 111 (second distributed unit DU2), but individual aggregation units may be provided for each of the fixed base stations 111 and 121. The aggregation unit CU is connected to the core network CN. The connections between radio devices such as antennas in each of the fixed base stations 111 and 121 and each of the distributed units DU1 and DU2, the connections between each of the distributed units DU1 and DU2 and the aggregation unit CU, and the connections between the aggregation unit CU and the core network CN are typically wired, such as by conductors or optical fibers, but some or all of these connections may also be wireless.

[0032] The communication function unit 41 (IAB-MT) of the mobile station MS can be wirelessly connected to the distributed unit DU of either of the fixed base stations 111, 121 depending on the location of the mobile station MS. In the example of Fig. 2, the communication function unit 41 is wirelessly connected to the second distributed unit DU2 of the second fixed base station 111. In this case, the mobile station MS functions as a child node with the second fixed base station 111 as a parent node (parent base station) or IAB donor, and extends the second fixed communication cell 112 by the second fixed base station 111 as the parent node. Then, the base station function unit 42 (IAB-DU) of the mobile station MS provides a mobile communication cell (not shown) as an extended communication cell of the second fixed communication cell 112 to the communication unit 2. In the example of Fig. 2, two communication units 2E and 2F connected to the base station function unit 42 of the mobile station MS are schematically shown. The first communication device 2E, while being within the first fixed communication cell 122 but outside the second fixed communication cell 112, substantially communicates with the second fixed base station 111 through the mobile station MS. The second communication device 2F, while being within the overlapping area of ​​the first fixed communication cell 122 and the second fixed communication cell 112, substantially communicates with the second fixed base station 111 through the mobile station MS. Note that the mobile station MS as an IAB node may extend a mobile communication cell or a non-terrestrial communication cell, such as the satellite communication cell 132, with a mobile base station or a non-terrestrial base station, such as the communication satellite 131, as its parent base station.

[0033] A mobile mobile station MS is attached to a moving body, except in the case of a mobile station that can move or fly autonomously, such as a communication satellite 131. A moving body is any movable object or person, including any vehicle such as a car, train, motorcycle, bicycle, airplane, drone, or ship. The mobile mobile station MS may also be a communication device 2 carried by a moving person, such as a communication device 2 with a tethering function or a personal hotspot function. Since such a communication device 2 (mobile station MS) generally functions as a wireless LAN access point, the RAT (e.g., 5G NR) used by the expansion source base station (e.g., the second fixed base station 111) may differ from the RAT used by the expansion destination mobile station MS.

[0034] In addition to the communication device function unit 41 and the base station function unit 42, the mobile station MS may have a positioning unit 43 that can measure the position of the mobile station MS itself and / or the communication device 2 with which it is connected.

[0035] The positioning unit 43 may be a satellite positioning device such as a GPS module that acquires position information of the mobile station MS itself based on a satellite positioning system such as GPS or GNSS (Global Navigation Satellite System). For example, the positioning unit 43 such as a GPS module may receive satellite positioning radio waves from multiple positioning satellites (not shown) that make up the satellite positioning system, and calculate the position information of the mobile station MS based on the transmission times of the respective satellites.

[0036] The positioning unit 43 may estimate the location information of the communication device 2 based on communication between the mobile station MS (base station function unit 42) and the communication device 2. For example, the time or delay required for communication between the mobile station MS and the communication device 2 suggests the distance between the mobile station MS and the communication device 2. Furthermore, if the mobile station MS has a function such as beamforming, the direction of the antenna of the mobile station MS communicating with the communication device 2, and the transmission direction and / or reception direction of the beam suggest the direction in which the communication device 2 is located relative to the mobile station MS. The positioning unit 43 can estimate the location information of the communication device 2 based on such relative distance and direction of the communication device 2 relative to the mobile station MS.

[0037] The positioning unit 43 may acquire position information of the communication device 2 through positioning electromagnetic waves emitted by either the mobile station MS or the communication device 2 toward the other. For example, the mobile station MS may emit positioning radio waves or positioning light, preferably having a wavelength or frequency different from that of the communication radio waves, toward the communication device 2. The communication device 2 may notify the positioning unit 43 of the time and intensity of the reception of the positioning electromagnetic waves by communicating with the base station function unit 42. The positioning unit 43 can calculate the position information of the communication device 2 based on the time, transmission intensity, transmission direction, etc. of the positioning electromagnetic waves transmitted by the positioning unit 43, in addition to the time and reception intensity of the positioning electromagnetic waves received by the communication device 2. Note that, instead of or in addition to electromagnetic waves, any physical phenomenon capable of non-contact distance measurement, such as sound, vibration, or wave, may be used to acquire relative position information of the communication device 2 with respect to the mobile station MS.

[0038] FIG. 3 is a functional block diagram of a communication control device 3 according to this embodiment. The communication control device 3 includes an information acquisition unit 31, a mobile communication device identification unit 32, an emergency information distribution area setting unit 33, an emergency information acquisition unit 34, a travel warning information generation unit 35, a route status detection unit 36, a number of onboard users detection unit 37, and an information distribution unit 38. Some of these functional blocks may be omitted as long as the communication control device 3 can achieve at least some of the functions and / or effects described below. These functional blocks are realized by the cooperation of hardware resources, such as a central processing unit (CPU), memory, input devices, output devices, and peripheral devices connected to the computer, and software executed using these resources. Regardless of the type or location of the computer, each of the above functional blocks may be realized by the hardware resources of a single computer or by combining hardware resources distributed across multiple computers. In particular, in this embodiment, some or all of the functional blocks of the communication control device 3 are preferably realized in the core network CN, but may also be realized in a centralized or decentralized manner in computers or processors provided in the base stations 111, 121, 131 (distributed units DU and / or aggregation units CU), gateway 133, mobile station MS, vehicle V, and communication device 2.

[0039] In the example of Fig. 3, a mobile station MS as an IAB node is attached to a vehicle V such as an automobile or a train and is mobile. The mobile station MS provides a mobile communication cell MC as an extended communication cell of communication cells 112, 122, and 132 (not shown) provided by base stations 111, 121, and 131 (not shown) to a communication device 2. In Fig. 3, six communication devices 2G, 2H, 2I, 2M-1, 2M-2, and 2M-3 (hereinafter collectively referred to as communication devices 2) are shown schematically and exemplarily within the mobile communication cell MC.

[0040] Of these, three non-mobile communication devices 2G, 2H, and 2I are outside the vehicle V, and three mobile communication devices 2M-1, 2M-2, and 2M-3 (hereinafter also collectively referred to as mobile communication device 2M) are inside the vehicle V as schematically indicated by the dotted line. The mobile communication device 2M inside the vehicle V can be used by a passenger user (not shown) who is riding on the vehicle V, and can move together with the vehicle V and the mobile station MS. The mobile communication device 2M, vehicle V, and mobile station MS that move approximately together in this manner are also collectively referred to as a mobile group MG.

[0041] 3 are all within the mobile communication cell MC and can communicate with the mobile station MS. However, if there are other base stations 111, 121, 131 with which the three non-mobile communication devices 2G, 2H, 2I can communicate, it is preferable that they be preferentially connected to these other base stations 111, 121, 131. This is because the mobile station MS moves relative to the non-mobile communication devices 2G, 2H, 2I, which may cause communication instability.

[0042] The fact that the non-mobile communication devices 2G, 2H, 2I are outside the vehicle V or are not moving with the mobile station MS is recognized in the core network CN etc. based on the position information of the mobile station MS and / or the non-mobile communication devices 2G, 2H, 2I acquired by a position information acquisition unit 311 described later, the movement information of the mobile station MS and / or the non-mobile communication devices 2G, 2H, 2I acquired by a movement information acquisition unit 312, the boarding information of the non-mobile communication devices 2G, 2H, 2I acquired by a boarding information acquisition unit 314 (i.e., information that they are not boarding the vehicle V), etc. The mobile communication device identification unit 32 described later identifies the mobile communication device 2M based on this information etc., but the core network CN etc. can also identify the non-mobile communication devices 2G, 2H, 2I based on this information.

[0043] On the other hand, it is preferable that the three mobile communication devices 2M-1, 2M-2, and 2M-3 shown in Figure 3 are preferentially connected to the mobile station MS that moves with them. In this case, the mobile station MS functions as a relay station that relays communications between the mobile communication device 2M and base stations 111, 121, and 131 (not shown). In the following explanation, it is assumed that only the three mobile communication devices 2M-1, 2M-2, and 2M-3 are connected to the mobile station MS, and the three non-mobile communication devices 2G, 2H, and 2I are not connected to the mobile station MS.

[0044] In the wireless communication system 1, an emergency information distribution area is set where emergency information about disasters such as earthquakes and tsunamis and other disasters is distributed simultaneously. A system that distributes emergency information is also called a public warning system (PWS), and in particular, a system that distributes warnings about disasters such as earthquakes and tsunamis is also called an earthquake and tsunami warning system (ETWS). Emergency information distribution areas are generally set in units of administrative divisions such as cities, wards, towns, and villages, and the fixed base stations 111 and 121 that are fixedly installed on the ground as shown in Figure 2 belong to the emergency information distribution area set for the administrative division in which they are installed.

[0045] On the other hand, as schematically shown in Figure 3, a mobile communication cell MC provided by a moving mobile station MS may include multiple different emergency information distribution areas. In the example of Figure 3, the mobile communication cell MC provided by the mobile station MS includes two different emergency information distribution areas EA1 and EA2. A boundary line BD is the boundary line between the emergency information distribution areas EA1 and EA2. In the illustrated state, a mobile group MG (particularly, the mobile station MS and mobile communication device 2M) and non-mobile communication devices 2H and 2I belong to or are present in a first emergency information distribution area EA1 set in a first administrative division, and a non-mobile communication device 2G belongs to or is present in a second emergency information distribution area EA2 set in a second administrative division.

[0046] The emergency information distribution system, which may constitute a part of the information distribution unit 38 described later, distributes emergency information simultaneously to all communication devices 2 within an emergency information distribution area where a disaster or the like has occurred. Specifically, when a disaster or the like has occurred within a first emergency information distribution area EA1, the mobile stations MS belonging to the first emergency information distribution area EA1 distribute emergency information simultaneously to the mobile communication devices 2M within the first emergency information distribution area EA1 and within the mobile group MG, and the base stations 111, 121, and 131 (not shown) belonging to the first emergency information distribution area EA1 distribute emergency information simultaneously to the non-mobile communication devices 2H and 2I within the first emergency information distribution area EA1. Furthermore, when a disaster or the like has occurred within a second emergency information distribution area EA2, the base stations 111, 121, and 131 (not shown) belonging to the second emergency information distribution area EA2 distribute emergency information simultaneously to the non-mobile communication devices 2G within the second emergency information distribution area EA2.

[0047] The information acquisition unit 31, which is preferably provided in the core network CN, acquires various information related to the communication device 2, the vehicle V, and the mobile station MS in the mobile communication cell MC. In particular, the information acquisition unit 31 acquires various information related to the mobile communication device 2M, the vehicle V, and the mobile station MS that constitute the mobile group MG. The information acquisition unit 31 may include at least one of a location information acquisition unit 311, a movement information acquisition unit 312, a connection information acquisition unit 313, and a boarding information acquisition unit 314.

[0048] The location information acquisition unit 311 acquires location information of the communication device 2, the vehicle V, and the mobile station MS within the mobile communication cell MC. As described above, if the positioning unit 43 of the mobile station MS is equipped with a satellite positioning device such as a GPS module, the satellite positioning information (i.e., location information of the mobile station MS) may be provided to the core network CN via the parent base stations 111, 121, and 131 (not shown). Similarly, if the communication device 2 or the vehicle V is equipped with a satellite positioning device such as a GPS module, the satellite positioning information (i.e., location information of the communication device 2 or the vehicle V) may be provided to the core network CN via the mobile station MS (to which the mobile communication device 2M is connected) or the base stations 111, 121, and 131 (to which the non-mobile communication devices 2G, 2H, and 2I are connected), not shown.

[0049] The movement information acquisition unit 312 acquires movement information of the communication device 2, vehicle V, and mobile station MS within the mobile communication cell MC. Examples of the movement information include a movement route, an arrival time at each position on the movement route, speed, acceleration, and movement direction. Some or all of this movement information can be acquired from the communication device 2, vehicle V, or mobile station MS themselves, or a movement instruction device (not shown) that remotely issues movement instructions to a vehicle V such as a bus or train or public transportation. For example, the movement route and the arrival time at each position on the movement route can be acquired from a map application or a navigation application installed in the communication device 2, vehicle V, mobile station MS, movement instruction device, etc. Furthermore, the speed, acceleration, and movement direction can be acquired from a positioning device such as a GPS module that also functions as the position information acquisition unit 311.

[0050] In addition, if the mobile communication device 2M, vehicle V, and mobile station MS that constitute the mobile group MG have been identified by the mobile communication device identification unit 32 as constituting the mobile group MG based on other information, the mobile information acquisition unit 312 may acquire the mobile information of any of the mobile communication device 2M, vehicle V, and mobile station MS as representative mobile information of the mobile group MG.

[0051] The connection information acquisition unit 313 acquires connection information between the communication device 2 in the mobile communication cell MC and the mobile station MS. As described above, in the example of this embodiment, only three mobile communication devices 2M-1, 2M-2, and 2M-3 are connected to the mobile station MS. Therefore, the connection information acquisition unit 313 acquires connection information indicating that the mobile communication device 2M in the vehicle V is connected to the mobile station MS. Similarly, the connection information acquisition unit 313 may acquire connection information indicating that the non-mobile communication devices 2G, 2H, and 2I outside the vehicle V are not connected to the mobile station MS (they are connected to other base stations 111, 121, and 131).

[0052] The boarding information acquisition unit 314 acquires boarding information of a boarding user (not shown) who is the user of the mobile communication device 2M, for the vehicle V. For example, when the boarding user boards the vehicle V, information that the boarding user has used the mobile communication device 2M to check in or complete boarding procedures (for example, information that the boarding user has held the mobile communication device 2M over a contactless reader provided at the ticket gate or boarding gate of the vehicle V serving as public transportation, or information that the mobile communication device 2M has been paired with the vehicle V for navigation, music playback, or the like when getting into a private car), or information that a boarding ticket for the vehicle V serving as public transportation has been purchased online using an account linked to the mobile communication device 2M, is acquired by the boarding information acquisition unit 314 as boarding information of the boarding user for the vehicle V.

[0053] The mobile communication device identifying unit 32 identifies the mobile communication device 2M that moves together with the mobile station MS based on some or all of the various information acquired by the information acquiring unit 31.

[0054] The mobile communication device identifying unit 32 may detect that the mobile communication device 2M is moving together with the mobile station MS, based on the position information of the mobile station MS and the mobile communication device 2M acquired by the position information acquiring unit 311. For example, if the relative distance (absolute value) that is the difference between the position information of the mobile station MS and the position information of the mobile communication device 2M is equal to or less than a predetermined value for a predetermined period of time, the mobile communication device identifying unit 32 may determine that the mobile communication device 2M is moving together with the mobile station MS.

[0055] The mobile communication device identifying unit 32 may detect that the mobile communication device 2M is moving together with the mobile station MS, based on the movement information of the mobile station MS and the mobile communication device 2M acquired by the movement information acquiring unit 312. For example, if the difference between the movement information of the mobile station MS and the movement information of the mobile communication device 2M is equal to or less than a predetermined value for a predetermined period of time, the mobile communication device identifying unit 32 may determine that the mobile communication device 2M is moving together with the mobile station MS.

[0056] The mobile communication device identifying unit 32 may detect that the mobile communication device 2M is moving together with the mobile station MS, based on connection information between the mobile communication device 2M and the mobile station MS acquired by the connection information acquiring unit 313. For example, based on connection information indicating that the mobile communication device 2M in the vehicle V is connected to the mobile station MS, the mobile communication device identifying unit 32 may determine that the mobile communication device 2M is moving together with the mobile station MS.

[0057] The mobile communication device identification unit 32 may detect that the mobile communication device 2M used by the boarding user is moving together with the mobile station MS, based on boarding information of the boarding user on the vehicle V acquired by the boarding information acquisition unit 314. For example, based on boarding information indicating that the boarding user is boarding the vehicle V, the mobile communication device identification unit 32 may determine that the mobile communication device 2M is moving together with the mobile station MS.

[0058] The emergency information distribution area setting unit 33 sets an emergency information distribution area for the mobile station MS and / or the communication device 2 based on the location information of the mobile station MS and / or the communication device 2 acquired by the location information acquisition unit 311 and the movement information of the mobile station MS and / or the communication device 2 acquired by the movement information acquisition unit 312. In the illustrated example, the emergency information distribution area setting unit 33 may set a first emergency information distribution area EA1 for the mobile station MS in response to the location information of the mobile station MS acquired by the location information acquisition unit 311 indicating a location within the first emergency information distribution area EA1. In this case, the emergency information distribution area setting unit 33 may set the same first emergency information distribution area EA1 as the mobile station MS for a mobile communication device 2M that moves together with the mobile station MS.

[0059] Alternatively, the emergency information distribution area setting unit 33 may set a first emergency information distribution area EA1 in an area on one side of the boundary line BD within the mobile communication cell MC (the left side in FIG. 3 ), and set a second emergency information distribution area EA2 in an area on the other side of the boundary line BD within the mobile communication cell MC (the right side in FIG. 3 ), based on the location information of the mobile station MS, the arrangement information of the boundary line BD, the range information of the mobile communication cell MC, etc., acquired by the location information acquisition unit 311. In this case, an emergency information distribution system that may constitute a part of the information distribution unit 38 described later can distribute emergency information related to the first emergency information distribution area EA1 to the mobile communication devices 2M and non-mobile communication devices 2H and 2I within the first emergency information distribution area EA1, and can distribute emergency information related to the second emergency information distribution area EA2 to the non-mobile communication device 2G within the second emergency information distribution area EA2.

[0060] Similarly, the emergency information distribution area setting unit 33 may set a first emergency information distribution area EA1 for the mobile communication device 2M and the non-mobile communication devices 2H, 2I when the location information of the mobile communication device 2M and the non-mobile communication devices 2H, 2I acquired by the location information acquisition unit 311 indicates a location within the first emergency information distribution area EA1, or may set a second emergency information distribution area EA2 for the non-mobile communication device 2G when the location information of the non-mobile communication device 2G acquired by the location information acquisition unit 311 indicates a location within the second emergency information distribution area EA2.

[0061] 4 is a schematic diagram illustrating an example of processing by the location information acquisition unit 311 and the emergency information distribution area setting unit 33. In this diagram, time flows from top to bottom. In this example, various data are sequentially exchanged among an "IAB" such as a mobile station MS, a "RAN" (Radio Access Network) such as the base stations 111, 121, and 131, a "CN / CBS" such as a core network CN and a CBS (Cell Broadcast Service) provided by the core network CN, and an "NWDAF" such as a Network Data Analytics Function (NWDAF) that may be part of the core network CN. In this diagram, "S" represents a step or process.

[0062] In S1, under the control of the location information acquisition unit 311, when a new mobile station MS is installed, or when a mobile station MS or a mobile group MG moves as shown by an arrow representing a movement route RT in Fig. 3, or when an emergency information distribution area changes as a result (in the example of movement in Fig. 3, a transition from a first emergency information distribution area EA1 to a second emergency information distribution area EA2), the "IAB" transmits location information of the mobile station MS to the "RAN". In this way, the mobile station MS may be able to move across different emergency information distribution areas EA1 and EA2.

[0063] In S2, the "RAN" transmits the location information of the mobile station MS transmitted to the "RAN" in S1 in the form of a location report to the "CN / CBS" under the control of the location information acquisition unit 311. The location information of the mobile station MS acquired by the "CN / CBS" that may constitute the location information acquisition unit 311 through S1 and S2 may be measured by the positioning unit 43 of the mobile station MS, such as a GPS module, as described above, or may be estimated or measured through communication radio waves or positioning electromagnetic waves emitted by the parent base station 111, 121, 131, etc., as the "RAN" to the mobile station MS as the "IAB".

[0064] In S3, the "CN / CBS" requests the "NWDAF" to perform mobility analytics of the mobile station MS based on the location information of the mobile station MS acquired in S2 under the control of the emergency information distribution area setting unit 33. In S4, under the control of the emergency information distribution area setting unit 33, the "NWDAF" executes mobility analytics of the mobile station MS in response to the request in S3, and provides the "CN / CBS" with an emergency information distribution area (Warning Area) of the mobile station MS at the current and / or future time that has been set based on the results of the analysis.

[0065] Here, the "NWDAF" may be an artificial intelligence (AI) / machine learning (ML) function in the core network CN, and may identify the emergency information distribution area in which the mobile station MS is located at each current or future time through a comprehensive analysis of the current or past location information of the mobile station MS acquired in S2, the movement information acquired by the movement information acquisition unit 312, and various other available related information (e.g., location information of the boundary line BD, range information of the mobile communication cell MC).

[0066] In this way, the emergency information distribution area setting unit 33 can be configured by various AI / ML functions in the core network CN, such as the NWDAF introduced in 5G. The NWDAF is responsible for collecting and analyzing data on networks such as 5G networks. Specifically, the NWDAF collects and stores activity history information, movement information, measurement information, and the like of mobile stations MS and communication devices 2 connected to the mobile communication network, and utilizes the analysis results for traffic control and the like on the mobile communication network. The analysis function of the movement information of the mobile stations MS and communication devices 2 provided by the NWDAF is also referred to as mobility analytics, as described above. Note that it is expected that functions similar to the NWDAF may be provided under different names in other wireless communication systems, including wireless communication systems of generations after 5G. In this embodiment, such similar functions may be used instead of or in addition to the NWDAF.

[0067] 3 , the emergency information acquisition unit 34 acquires emergency information related to an emergency information distribution area in which the mobile station MS and / or the communication device 2 is located. For example, the emergency information acquisition unit 34 may acquire emergency information related to an emergency information distribution area set by the emergency information distribution area setting unit 33 (S3 and S4 in FIG. 4 ) based on the location information of the mobile station MS acquired by the location information acquisition unit 311 (S1 and S2 in FIG. 4 ). Furthermore, the emergency information acquisition unit 34 may acquire emergency information related to an emergency information distribution area set by the emergency information distribution area setting unit 33 based on the location information of each communication device 2 acquired by the location information acquisition unit 311.

[0068] 3 , if the emergency information distribution area setting unit 33 sets a first emergency information distribution area EA1 in which the mobile station MS is located for the mobile station MS and / or the mobile communication device 2M, the emergency information acquisition unit 34 may acquire only emergency information related to the first emergency information distribution area EA1. On the other hand, if the emergency information distribution area setting unit 33 sets the first emergency information distribution area EA1 for the non-mobile communication devices 2H and 2I within the first emergency information distribution area EA1 and sets the second emergency information distribution area EA2 for the non-mobile communication device 2G within the second emergency information distribution area EA2, the emergency information acquisition unit 34 may acquire emergency information related to both emergency information distribution areas EA1 and EA2. In either case, the emergency information acquired by the emergency information acquisition unit 34 is limited to general information common to emergency information distribution areas, which are generally set on an administrative division basis such as a city, ward, town, or village (e.g., "An earthquake with a seismic intensity of X occurred in City B, Prefecture A at H:00:M").

[0069] In this embodiment, in addition to or instead of emergency information that is limited to summary information at the administrative division level, movement warning information related to emergency information that is highly relevant to the mobile communication device 2M traveling with the mobile station MS is distributed. Here, the movement warning information is information that conveys specific precautions to be taken when the mobile communication device 2M, vehicle V, and mobile station MS constituting the mobile group MG travel during an emergency when emergency information is being distributed simultaneously to the user (board user) of the mobile communication device 2M, the driver of the vehicle V, etc. As will be described in detail later, if the emergency information acquired by the emergency information acquisition unit 34 reports the occurrence of an earthquake, the movement warning information may also report, for example, to the mobile communication device 2M in the vehicle V about a landslide L that has occurred on the travel route RT of the mobile group MG in connection with the earthquake.

[0070] In order to provide the mobile communication device 2M with more relevant movement warning information, the route status detection unit 36 ​​may detect the status of the movement route RT of the moving group MG including the mobile station MS and the mobile communication device 2M. To enable more accurate detection of the status, the route status detection unit 36 ​​may be configured with an AI / ML function such as NWDAF that can access and analyze a huge amount of data regarding the current or past status (e.g., weather, topography, traffic volume, road surface conditions) of the movement route RT to be detected.

[0071] In the example of FIG. 3 , the route status detection unit 36 ​​detects that a moving group MG within the first emergency information distribution area EA1 is moving along a moving route RT. This moving route RT can be acquired by the movement information acquisition unit 312 and may be set by a map application, a route search application, or a navigation device of at least one of the mobile communication device 2M, the vehicle V, and the mobile station MS that make up the moving group MG. Alternatively, the moving route RT may be estimated from changes over time in the position information of at least one of the mobile communication device 2M, the vehicle V, and the mobile station MS that can be acquired by the position information acquisition unit 311, and known layout information of major roads. Furthermore, the route status detection unit 36 ​​detects that a road on the moving route RT has become impassable due to a landslide L caused by the earthquake related to the emergency information. Note that the location of the landslide L may be outside the first emergency information distribution area EA1 where the moving group MG is currently located (in the second emergency information distribution area EA2 in the example of FIG. 3 ), or outside the current mobile communication cell MC.

[0072] Furthermore, the route status detection unit 36 ​​may detect not only secondary disasters such as landslides L, but also congestion on travel routes RT and alternative routes due to primary disasters such as earthquakes. Furthermore, if the vehicle V is a train, the route status detection unit 36 ​​may detect sections of the tracks serving as the travel route RT that are impassable or where service is suspended due to earthquakes or the like.

[0073] The movement warning information generation unit 35 generates movement warning information related to the movement of at least one of the mobile station MS and the mobile communication device 2M (i.e., the movement group MG) that is related to the emergency information acquired by the emergency information acquisition unit 34. The movement warning information generation unit 35 may be configured with an AI / ML function such as NWDAF that can access and analyze a huge amount of data related to the current or past situations of the mobile communication device 2M and / or the mobile station MS, in order to enable the generation of movement warning information that is highly relevant to the mobile communication device 2M, etc.

[0074] The movement warning information generation unit 35 may generate movement warning information for the mobile communication device 2M based on the status of the movement route RT of the moving group MG detected by the route status detection unit 36. In the example of Fig. 3, the movement warning information generation unit 35 generates movement warning information for the mobile communication device 2M that is moving along the movement route RT toward the destination D, to warn that a landslide L has occurred on the movement route RT or that a road is impassable. This movement warning information may suggest a recommended detour route to the mobile communication device 2M.

[0075] Furthermore, when the vehicle V is a train, the travel warning information generation unit 35 generates travel warning information to alert the mobile communication device 2M used by the passenger (board user) that an impassable section has appeared on the current travel route RT due to an earthquake, etc. This travel warning information may suggest to the mobile communication device 2M a recommended station or place to get off, or an alternative means of transportation to reach the destination D.

[0076] The movement warning information generation unit 35 may generate movement warning information according to the number of onboard users detected by the onboard user number detection unit 37. The onboard user number detection unit 37 detects the number of onboard users on the vehicle V based on some or all of the various information acquired by the information acquisition unit 31. For example, the onboard user number detection unit 37 may detect the number of onboard users on the vehicle V based on connection information between the mobile communication device 2M and the mobile station MS acquired by the connection information acquisition unit 313. In the example of FIG. 3, three mobile communication devices 2M-1, 2M-2, and 2M-3 are connected to the mobile station MS, so the onboard user number detection unit 37 may determine that the number of onboard users is "3."

[0077] If the vehicle V is a private car, the number of passengers detected by the passenger user number detection unit 37 is small and the vehicle V itself is considered to be relatively small, so the movement warning information generation unit 35 may suggest a relatively narrow road as a detour route. If the vehicle V is a train and the number of passengers detected by the passenger user number detection unit 37 is large, the movement warning information generation unit 35 may suggest a recommended station or place to get off at in order to avoid congestion during evacuation, or may present precautions to take during evacuation.

[0078] The information distribution unit 38 distributes the movement warning information generated by the movement warning information generation unit 35 from the mobile station MS to the mobile communication device 2M. In addition to the movement warning information, the information distribution unit 38 may distribute emergency information acquired by the emergency information acquisition unit 34 from the mobile station MS to the mobile communication device 2M.

[0079] 3, the information distribution unit 38 may distribute, from the mobile station MS to the mobile communication device 2M traveling along the travel route RT toward the destination D, travel warning information regarding a landslide L that has occurred on the travel route RT, together with emergency information regarding the second emergency information distribution area EA2 in which the landslide L has occurred. Alternatively, the information distribution unit 38 may distribute, from the mobile station MS to the mobile communication device 2M traveling along the travel route RT toward the destination D, travel warning information regarding the landslide L that has occurred on the travel route RT, together with emergency information regarding the first emergency information distribution area EA1 in which the mobile communication device 2M is currently located.

[0080] In addition, an API (Application Programming Interface) may be provided that allows a third party with access rights to set the conditions under which the information distribution unit 38 distributes movement warning information and the content of the movement warning information generated by the movement warning information generation unit 35.

[0081] According to this embodiment, in an emergency such as when emergency information is to be distributed simultaneously, movement warning information regarding movement is distributed from the mobile station MS to the mobile communication device 2M that is moving together with the mobile station MS. This movement warning information is more relevant to the mobile communication device 2M than emergency information that is distributed simultaneously within each of the emergency information distribution areas EA1 and EA2.

[0082] The present disclosure has been described above based on the embodiments. Various modifications are possible to the combinations of the components and processes in the exemplary embodiments, and it will be obvious to those skilled in the art that such modifications are included within the scope of the present disclosure.

[0083] The configuration, operation, and function of each device and method described in the embodiments can be realized by hardware resources, software resources, or a combination of hardware and software resources. Examples of hardware resources include processors, ROM, RAM, and various integrated circuits. Examples of software resources include operating systems, applications, and other programs.

[0084] The present disclosure may be expressed as follows:

[0085] Item 1: A communication control device comprising at least one processor that executes the following: acquiring, by an emergency information acquisition unit, emergency information related to an emergency information distribution area in which a mobile station is located; identifying, by a mobile communication device identification unit, a mobile communication device that moves together with the mobile station; generating, by a movement warning information generation unit, movement warning information related to the emergency information, the movement warning information related to movement of at least one of the mobile station and the mobile communication device; and distributing, by an information distribution unit, the movement warning information from the mobile station to the mobile communication device. Item 2: The communication control device according to item 1, wherein the information distribution unit distributes the emergency information and the movement warning information from the mobile station to the mobile communication device. Item 3: The communication control device according to item 1 or 2, wherein the at least one processor executes, by a route status detection unit, detecting a status of a route of the mobile station, and the movement warning information generation unit generates the movement warning information based on the status of the route. Item 4: The communication control device according to any of items 1 to 3, wherein the mobile station is attached to a vehicle, and the mobile communication device is used by a user aboard the vehicle. Item 5: The communication control device according to item 4, wherein the at least one processor detects the number of boarding users using a boarding user number detection unit, and the movement warning information generation unit generates the movement warning information according to the number of boarding users. Item 6: The communication control device according to item 5, wherein the at least one processor acquires connection information between the mobile communication device and the mobile station using a connection information acquisition unit, and the boarding user number detection unit detects the number of boarding users based on the connection information. Item 7: The communication control device according to any of items 4 to 6, wherein the at least one processor acquires boarding information of the boarding users in the vehicle using a boarding information acquisition unit, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the boarding information.Item 8: The communication control device according to any one of items 1 to 7, wherein the at least one processor executes, by a location information acquisition unit, acquiring location information of the mobile station and the mobile communication device, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the location information of the mobile station and the mobile communication device. Item 9: The communication control device according to any one of items 1 to 8, wherein the at least one processor executes, by a location information acquisition unit, acquiring location information of the mobile station and the mobile communication device, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the location information of the mobile station and the mobile communication device. Item 10: The communication control device according to any one of items 1 to 9, wherein the at least one processor executes, by a connection information acquisition unit, acquiring connection information between the mobile communication device and the mobile station, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the connection information between the mobile communication device and the mobile station. Item 11: The communication control device according to any one of items 1 to 10, wherein the movement warning information generation unit is configured by an NWDAF (Network Data Analytics Function). Item 12: The communication control device according to any one of items 1 to 11, wherein the mobile station is capable of moving across different emergency information distribution areas. Item 13: The communication control device according to any one of items 1 to 12, wherein the mobile station is a relay station that relays communication between a base station and the mobile communication device. Item 14: The communication control device according to item 13, wherein the relay station is an IAB (Integrated Access and Backhaul) node including an MT (Mobile Termination) that functions as a communication device for the base station and a DU (Distributed Unit) that functions as a base station for the mobile communication device.Item 15: A communication control method performed by at least one processor: acquiring emergency information related to an emergency information distribution area in which a mobile mobile station is located, identifying a mobile communication device moving together with the mobile station, generating movement warning information related to the emergency information, the movement warning information related to the movement of at least one of the mobile station and the mobile communication device, and distributing the movement warning information from the mobile station to the mobile communication device. Item 16: A storage medium storing a communication control program that causes at least one processor to execute: acquiring emergency information related to an emergency information distribution area in which a mobile mobile station is located, identifying a mobile communication device moving together with the mobile station, generating movement warning information related to the emergency information, the movement warning information related to the movement of at least one of the mobile station and the mobile communication device, and distributing the movement warning information from the mobile station to the mobile communication device.

[0086] TECHNICAL FIELD This disclosure relates to the delivery of movement warning information to communicators traveling with mobile stations.

[0087] 1 Wireless communication system, 2 Communication device, 2M Mobile communication device, 3 Communication control device, 11 5G wireless communication system, 12 4G wireless communication system, 13 Satellite communication system, 31 Information acquisition unit, 32 Mobile communication device identification unit, 33 Emergency information distribution area setting unit, 34 Emergency information acquisition unit, 35 Movement warning information generation unit, 36 Route status detection unit, 37 Number of boarded users detection unit, 38 Information distribution unit, 41 Communication device function unit, 42 Base station function unit, 43 Positioning unit, 111 5G base station, 112 5G cell, 121 4G base station, 122 4G cell, 131 Communication satellite, 132 Satellite communication cell, 133 Gateway, 311 Location information acquisition unit, 312 Movement information acquisition unit, 313 Connection information acquisition unit, 314 Boarding information acquisition unit.

Claims

1. A communication control device having at least one processor that executes the following: acquiring emergency information related to an emergency information distribution area in which a mobile station capable of moving is located, by an emergency information acquisition unit; identifying a mobile communication device that moves together with the mobile station, by a mobile communication device identification unit; generating movement warning information related to the emergency information, the movement warning information being related to the movement of at least one of the mobile station and the mobile communication device, by a movement warning information generation unit; and distributing the movement warning information from the mobile station to the mobile communication device, by an information distribution unit.

2. The communication control device according to claim 1, wherein said information distribution unit distributes said emergency information and said movement warning information from said mobile station to said mobile communication device.

3. The communication control device according to claim 1, wherein the at least one processor executes detection of the status of the route of the mobile station by a route status detection unit, and the movement warning information generation unit generates the movement warning information based on the status of the route.

4. The communication control device according to claim 1, wherein the mobile station is attached to a vehicle, and the mobile communication device is used by a user on board the vehicle.

5. The communication control device described in claim 4, wherein the at least one processor detects the number of on-board users using a number of on-board users detection unit, and the movement warning information generation unit generates the movement warning information according to the number of on-board users.

6. The communication control device according to claim 5, wherein the at least one processor executes acquiring connection information between the mobile communication device and the mobile station by a connection information acquisition unit, and the number of on-board users detection unit detects the number of on-board users based on the connection information.

7. The communication control device described in claim 4, wherein the at least one processor executes acquiring boarding information of the boarding user on the vehicle via a boarding information acquisition unit, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the boarding information.

8. The communication control device according to claim 1, wherein the at least one processor executes acquisition of location information of the mobile station and the mobile communication device by a location information acquisition unit, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the location information of the mobile station and the mobile communication device.

9. The communication control device according to claim 1, wherein the at least one processor executes acquisition of mobility information of the mobile station and the mobile communication device by a mobility information acquisition unit, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the mobility information of the mobile station and the mobile communication device.

10. The communication control device according to claim 1, wherein the at least one processor executes acquiring connection information between the mobile communication device and the mobile station by a connection information acquisition unit, and the mobile communication device identification unit detects that the mobile communication device is moving together with the mobile station based on the connection information between the mobile communication device and the mobile station.

11. The communication control device according to claim 1, wherein the movement warning information generation unit is configured by an NWDAF (Network Data Analytics Function).

12. The communication control device according to claim 1, wherein the mobile station is movable across different emergency information distribution areas.

13. The communication control device according to claim 1, wherein said mobile station is a relay station that relays communications between a base station and said mobile communication device.

14. The communication control device according to claim 13, wherein the relay station is an IAB (Integrated Access and Backhaul) node having an MT (Mobile Termination) functioning as a communication device for the base station and a DU (Distributed Unit) functioning as a base station for the mobile communication device.

15. A communications control method, executed by at least one processor, comprising: acquiring emergency information relating to an emergency information distribution area in which a mobile station capable of moving is located; identifying a mobile communication device moving together with the mobile station; generating movement warning information relating to the emergency information, the movement warning information relating to the movement of at least one of the mobile station and the mobile communication device; and distributing the movement warning information from the mobile station to the mobile communication device.

16. A storage medium storing a communication control program that causes at least one processor to execute the following: acquiring emergency information related to an emergency information distribution area in which a mobile station capable of moving is located; identifying a mobile communication device that moves together with the mobile station; generating movement warning information related to the emergency information, the movement warning information being related to the movement of at least one of the mobile station and the mobile communication device; and distributing the movement warning information from the mobile station to the mobile communication device.

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