JP2023109634A - Core network device, communication terminal device, mobile body, information processing device, system, and program - Google Patents

Abstract

Kind Code: A1 Abstract: When providing a service to a mobile unit via a mobile communication network, the mobile communication terminal unit is used for service provision regardless of the strength of the signal received by the mobile communication terminal unit from a base station. To provide a system that can be connected to an information processing device that is A core network device of a mobile communication network includes means for managing connection from a communication terminal device to a base station in the mobile communication network, and a base station in an area to which a mobile communication terminal device moving on a moving route moves. and means for notifying communication address information of the communication terminal device to an information processing device used for providing services to mobile units in the area when the communication terminal device is connected to the station. [Selection drawing] Fig. 2

Description

The present invention relates to communication between a communication terminal device of a mobile object such as a vehicle and an information processing device via a core network device of a mobile communication network.

Conventionally, in automatic driving of a vehicle, which is a mobile object that moves on roads, there is a configuration in which an in-vehicle device (communication terminal device) and a server (information processing device) mounted on the vehicle communicate with each other via a base station of a mobile communication network. Are known.

Patent Literature 1 discloses a configuration of a communication system that switches base stations when the strength of a signal received by a vehicle from a base station becomes weak in road-to-vehicle communication via a mobile communication network (Patent Document 1). Reference 1).

JP-A-2000-004468

When providing services such as driving assistance to vehicles via mobile communication networks, vehicles need to be connected to an appropriate server (information processing device) regardless of the strength of the signal received by the vehicle from a base station. There is a problem that there is.

A device according to one aspect of the present invention is a core network device of a mobile communication network. This core network device comprises means for managing connection from a communication terminal device to a base station in the mobile communication network, and for recognizing that a mobile communication terminal device traveling along a movement path has connected to a base station in a destination area. means for notifying, as a trigger, communication address information of the communication terminal device connected to the base station in the area to an information processing device used for providing services to the mobile units in the area.

In the core network device, the information processing device may include means for transmitting security information used for authentication and confidential communication between the communication terminal device and the information processing device.

A device according to another aspect of the present invention is an information processing device used to provide a service to a moving body moving along a moving route. The information processing device connects to the base station in the area notified by the core network device of the mobile communication network when the mobile communication terminal device connects to the base station in the destination area. means for receiving communication address information of a device; and means for notifying the communication terminal device of communication address information of the information processing device and a connection request to the information processing device based on the communication address information of the communication terminal device. , provided.

In the information processing device, the communication address information of the information processing device may be a URL of the service providing application in the information processing device. Further, the information processing device may be a base station of a mobile communication network, a node between the base station and the core network, or an MEC (Multi-access Edge Computing) device provided outside the core network. Further, the information processing device includes means for receiving security information used for authentication and confidential communication between the communication terminal device and the information processing device from the core network device, and The notification to the device may include said security information.

A device according to another aspect of the present invention is a communication terminal device provided in a moving object that moves along a moving route. When the communication terminal device of the mobile body connects to a base station in the area of the destination, the communication terminal device receives the communication address of the information processing device from the information processing device used to provide services to the mobile body in the area. means for receiving information and a connection request to the information processing device; and means for connecting to the information processing device via the base station based on the communication address information of the information processing device according to the connection request. Prepare.

In the communication terminal device, means for transmitting the connection information received from the information processing device to communication terminal devices of other mobile units located nearby via direct wireless communication between mobile units or road-to-vehicle communication. You may prepare. Further, the communication address information of the information processing device may be the URL of the service providing application in the information processing device. Further, the communication address information of the information processing device and the connection request to the information processing device may include security information used for authentication and confidential communication between the communication terminal device and the information processing device. Further, the communication address information of the information processing device and the connection request to the information processing device may be received by non-IP communication of SMS or NIDD in the mobile communication network, or by IP communication in the mobile communication network. You may

A system according to still another aspect of the present invention includes the core network device and the information processing device.

A program according to still another aspect of the present invention is a program executed by a computer or processor provided in a core network device of a mobile communication network. This program includes a program code for managing connection from a communication terminal device to a base station in the mobile communication network, and a communication terminal device that is moving along a movement route and is connected to a base station in a destination area. a program code for notifying communication address information of the communication terminal device connected to the base station in the area to an information processing device used to provide services to the mobile units in the area, triggered by the above.

A program according to still another aspect of the present invention is a program executed by a computer or processor provided in an information processing apparatus used to provide services to mobile bodies moving along a travel route. This program is triggered by the connection of the mobile communication terminal device to the base station in the destination area, and the communication terminal device connected to the base station in the area notified by the core network device of the mobile communication network. for notifying the communication terminal device of the communication address information of the information processing device and a connection request to the information processing device based on the program code for receiving the communication address information and the communication address information of the communication terminal device; program code;

A program according to still another aspect of the present invention is a program executed by a computer or processor provided in a mobile communication terminal device that moves along a movement route. When the mobile communication terminal device connects to a base station in a destination area, the program outputs communication address information of the information processing device from an information processing device used for providing services to the mobile device in the area. A program code for receiving a connection request to the information processing device, and a program for connecting to the information processing device via the base station based on the communication address information of the information processing device in response to the connection request. including code and

In the core network device, the mobile unit, the information processing device, the system, and the program, the communication address information of the communication terminal device is non-IP communication such as SMS or NIDD (Non-IP Data Deliverer) in the mobile communication network. or an IP address of the communication terminal used for IP communication in the mobile communication network. NIDD is a function defined by 3GPP standards (see, for example, TS23.401 V15.4.0 (2018-06), TS23.682 V15.5.0 (2018-06)), and uses IP. This is non-IP communication in which communication is performed without

In the core network device, the mobile object, the information processing device, the system, and the program, the mobile object may be a mobile object that moves on the ground, in the ground, in the air, on water, or in water. It may be a vehicle that

Further, in the core network device, the mobile device, the information processing device, the system and the program, the fact that the communication terminal device of the mobile device is connected to the base station in the destination area is determined by a learned model of machine learning. may be estimated or determined using

According to the present invention, when a service is provided to a mobile unit via a mobile communication network, the service can be provided from the communication terminal unit of the mobile unit regardless of the strength of the signal received by the communication terminal unit of the mobile unit from the base station. It can be connected to an information processing device used for provision.

Explanatory drawing which shows an example of the whole structure of the system which concerns on this embodiment. 2 is a block diagram showing an example of main functions of a core network device according to the embodiment; FIG. FIG. 2 is a block diagram showing an example of main functions of an MEC server (information processing device) according to the embodiment; FIG. 2 is a block diagram showing an example of main functions of a vehicle UE (communication terminal device) according to the present embodiment; FIG. 2 is an explanatory diagram showing an example of information flow and processing for MEC connection support in the overall configuration of the system according to the present embodiment; 6 is a flow chart showing an example of a procedure for MEC connection support to a UE (communication terminal device) of a vehicle in the system of FIG. 5; 6 is a flowchart showing another example of a procedure for supporting MEC connection to a UE (communication terminal device) of a vehicle in the system of FIG. 5;

Embodiments of the present invention will be described below with reference to the drawings.
The system according to the embodiments described in this document, in the field of CV2X (Cellular Vehicle to X), the communication terminal device of the vehicle at an appropriate place and timing, a closed area network such as a communication carrier (for example, LADN: Local Area It is an MEC connection support system that supports connection to a vehicle communication terminal device through a mobile communication network core network (e.g., 5GC), which enables access to a specific MEC server (information processing device) installed in a data network). be. The MEC server (information processing device) sends applications (for example, A connection trigger to an application that provides a service of merging support near a merging point of vehicles) can be notified.

In addition, by changing the geographical area definition of the closed area network (LADN), other than the confluence, for example, in the parking lot of a large shopping mall, or in the area where an automatic driving vehicle can run as an automatic driving mode The present invention can be applied. .

In this embodiment, the moving object is a vehicle that travels on a road that is a moving route on the ground, but there are no particular restrictions on the type of moving object and the type of moving route. For example, vehicles are automobiles, trucks, buses, and motorcycles. The vehicle may be a vehicle that has an automatic driving function, or a manually operated vehicle that does not have an automatic driving function. In addition, the mobile object to be subjected to collision possibility determination may be a vehicle on the ground, or a mobile object such as a flying object that can fly and move along a movement route in the sky above a predetermined altitude. In addition, the moving body is an underground moving body that moves along an underground moving path, a water moving body such as a ship that can move along a moving path on water (e.g., sea), or an underwater moving body (e.g., in the sea) that moves along a moving path. It may be an underwater mobile such as a diving robot.

Further, the vehicle of this embodiment may be an electric vehicle, a fuel cell vehicle, or a hybrid vehicle having both an internal combustion engine and an electric motor. Also, the vehicle may be a vehicle in which the frontmost and leftmost seat is not the driver's seat, if the vehicle has a plurality of seats for crew members or passengers. That is, the vehicle may be a vehicle in which only the rightmost seat in the front row is the driver's seat, or may be an automatically operated vehicle that does not have a driver's seat.

Also, the configuration of the mobile communication network, the communication method, and the like in this embodiment are not limited to those conforming to the standards of a specific generation. The configuration and communication method of the mobile communication network in this embodiment may comply with, for example, LTE, LTE-Advanced, fifth generation, or subsequent generation standards.

FIG. 1 is an explanatory diagram showing an example of the overall configuration of the system according to this embodiment. In FIG. 1, the system of this embodiment includes a core network device that configures a mobile communication network 15 and will be described later. In addition, the system of the present embodiment can move from a merging side road 93 of a main road 91, 92 of a road 90 such as an expressway, which is a movement route on the ground on which a vehicle 30A as a moving body is traveling, to a side road 93 as another moving body. The information processing device 10 is provided for providing a service for determining the possibility of a collision between moving bodies when the vehicle 30B joins. The system of this embodiment may include a plurality of mobile communication terminal devices 31 such as vehicles 30A and 30B.

In FIG. 1, the main lane of road 90 has a driving lane 91 and an overtaking lane 92 . Vehicles 30A and 30C are traveling on the driving lane 91, and vehicles 30E and 30F are traveling on the passing lane 92. The merging side road 93 is in contact with the driving lane 91 of the main roadway in the merging possible range Wx. The vehicles 30B and 30D are traveling on the merging side road 93 toward the main roadway. In addition, in the following description, the vehicle 30 is used when the description is common to each vehicle.

The information processing device 10 of the present embodiment is provided, for example, in the base station 16 of the mobile communication network 15, and performs various data processing that is transmitted to and received from the communication terminal device 31 of the vehicle 30 via the base station 16. It is an MEC (Multi-access Edge Computing) device that can The information processing device (hereinafter referred to as “MEC server”) 10 may be provided at a node between the base station 16 and the core network of the mobile communication network 15 or outside the core network.

A base station 16 forms one or more cells (sectors, also called sector cells). The cells may be two-dimensionally formed on the ground or the sea, or three-dimensionally formed from the sky toward the ground or the sea. A cell may be a macrocell, a small cell, a femtocell, a picocell, a large cell, and so on. A plurality of cells may constitute a cellular structure distributed so as to be adjacent to each other two-dimensionally or three-dimensionally, or may constitute a hierarchical cell structure in which a part or all of them overlap hierarchically. . The base station 16 is a macrocell base station, a small cell base station, a femtocell base station, a picocell base station, a large cell base station, a fixed base station fixedly installed on the ground or the like, or a mobile station that can move on the ground, on the sea, in the sky, or the like. type base station or the like. The base station 16 may be a wireless communication device called eNodeB (evolved Node B: eNB), gNodeB (gNB), en-NodeB (en-gNB), access point, or the like.

A communication terminal device 31 of the vehicle 30 functions as a user equipment (UE) that can be used as a mobile communication service subscriber. A communication terminal device (hereafter also referred to as “UE”) 31 is, for example, an in-vehicle device installed in the vehicle 30 (for example, a device incorporated as part of a navigation device). The UE 31 of the vehicle 30 may be a device carried or worn by a user (eg, driver or passenger) within the vehicle 30 . The UE 31 may be a wireless communication device called a user terminal, terminal, terminal device, mobile station, mobile device, or the like.

The UE 31 of the vehicle 30 may have a function capable of close proximity wireless communication with other vehicles in the vicinity through vehicle-to-vehicle communication (for example, short-range wireless communication such as Sidelink (PC-5)). Vehicle-to-vehicle communication uses radio waves such as microwaves and millimeter waves, for example. The frequency of inter-vehicle communication may be, for example, several hundred MHz lower than 1 GHz or a high frequency band of 1 GHz or higher. In addition, the frequency of inter-vehicle communication is 700 MHz band (715 MHz to 725 MHz), 5.8 GHz band (5770 MHz to 5850 MHz) and LTE-V2X Sidel used in ITS (Intelligent Transport Systems) and CACC (Cooperative Adaptive Cruise Control). ink( It may be the 5.9 GHz band (5850 MHz to 5925 MHz) used in PC-5), the frequency used in NR-V2X Sidelink (PC-5), or the like. A plurality of antennas having predetermined beam widths may also be provided for vehicle-to-vehicle communication. For example, the vehicle 30 has a directional antenna for inter-vehicle communication with a vehicle in front, a directional antenna for inter-vehicle communication with a rear vehicle, and a directional antenna for inter-vehicle communication with a vehicle on the right side. and a directional antenna for inter-vehicle communication with the vehicle on the left side. Vehicle-to-vehicle communication may be performed via a roadside communication relay device RSU (Road Side Unit) provided around the road 90 .

The MEC server 10 of this embodiment may have a function of communicating with a user's communication terminal device located outside the vehicle 30 via the base station 16 . A user's communication terminal device is a user device (UE) such as a smart phone that can be used as a subscriber of a mobile communication service, and is a wireless communication device called a user terminal, terminal, terminal device, mobile station, mobile device, or the like. may

The UE 31 of the vehicle 30 and the UE outside the vehicle 30 are IoT devices, AR (Augmented Reality) devices, VR (Virtual Reality) devices, MR (Mixed Reality) devices, or smart It can be a device. In addition, the UE is a glasses-type device (eg, AR glasses, VR glasses, MR glasses, smart glasses), a watch-type device (eg, smart watch), etc. that has a function of acquiring current location information and a communication function. good. Also, the UE may be a GNSS (Global Navigation Satellite System) tracker, a security buzzer, a pedometer, etc. having a function of acquiring current location information and a communication function.

In the system of FIG. 1, the cell of the base station 16 is formed so as to cover the area near the confluence of the driving lane 91 and the merging side road 93, and the UE 31 of the vehicle 30 existing in the area, the base station 16, and the MEC A LADN (Local Area Data Network), which is a closed network of virtual network slices including the server 10, is defined. In the LADN, the UE 31 of the vehicle 30 establishes a PDU (Protocol Data Unit) session between UPF (User Plane Function), which is a node that performs packet transfer of user data via the base station 16, and through the UPF can be connected to the MEC server 10 by

In order for the UE 31 of the vehicle 30 to connect to the MEC server 10, it is necessary to know the URL (IP address), which is the communication address information of the MEC server 10 associated with the geographical location where the UE 31 is located. A conventional method (for example, ETSI white paper: Enhanced DNS Support towards Distributed MEC Environment (reference URL: https MEC with geographically distributed terminals as discussed in http://www.etsi.org/images/files/ETSIWhitePapers/etsi-wp39-Enhanced-DNS-Support-towards-Distributed-MEC-Environment.pdf) A method called “Service Discovery” in which a server is found and connected to) has the following problems (1) and (2) when it is put into practical use, especially in the field of C-V2X.

(1) When the UE 31 of the vehicle 30 moves to an area connectable to the MEC server 10, the information to the effect that the UE 31 can access the MEC server is not provided. For example, when the vehicle 30 approaches the vicinity of the merging road and wants to access the MEC server 10 deployed on the closed area NW (LADN: Local Area Data Network) that supports the merging, the vehicle 30 is triggered to access the MEC server 10. can't know In order to solve this problem with existing technology, it is necessary to create in advance information (connection information to the MEC server 10) associated with the geographical location in the application installed in the vehicle 30. FIG.

(2) When the MEC server 10 is newly added to the closed network network, the UE 31 of the vehicle 30 is provided with the MEC connection information (for example, the URL on the closed network network) as the communication address information of the added MEC server 10. not.

In this embodiment, focusing on the fact that the core network device of the mobile communication network grasps the locations of all UEs connected to each base station on a base station basis, the UE 31 of the vehicle 30 is located at a specific location (base station). Triggered by connection (initial connection or reconnection) to the station 16), the core network device notifies the MEC server 10 to that effect, and the MEC server 10 notifies the UE 31 of the specific MEC server 10 notifies the trigger to connect to the application of the service to be provided. This trigger notification includes MEC connection information as communication address information of the MEC server 10 .

In the method in which the MEC server 10 notifies the UE 31 of the vehicle 30 of the trigger, the communication route may be selected according to whether or not IP communication from the NW to the terminal is not accepted. For example, from the viewpoint of cyber security of UE31, if the IP communication from the closed NW of the mobile communication network to UE31 is not accepted (Port of Layer 4 is closed), C-Plane of mobile communication network 15 A notification means by non-IP communication such as SMS or NIDD is used. If IP communication from the closed NW of the mobile communication network to the UE31 is implemented, notification means is performed from the MEC server 10 to the UE31 by IP communication.

In order to establish secure communication at high speed between the application of the UE 31 of the vehicle 30 that received the notification and the application of the MEC server 10, the content of the notification includes the core network necessary for the UE 31 to connect to the MEC server 10. id (identification information) issued by the authentication function and security key (for example, password, electronic signature, and key information used for encryption/decryption) or token (for example, disposable " "one-time passwords" or software that generates such one-time passwords).

The UE 31 of the vehicle 30 that has received the notification uses a direct wireless communication method between vehicles such as PC-5 or a road-to-vehicle communication method for the following vehicles located around it, as communication address information of the MEC server 10 MEC connection information may be conveyed. As a result, the connection start trigger can be obtained in advance by a method different from the notification from the core network device, so that the connection sequence to the MEC server 10 can be reduced compared to that of the preceding vehicle.

FIG. 2 is a block diagram showing an example of main functions of the core network device 150 according to this embodiment. In FIG. 2 , core network device 150 provided in the core network of mobile communication network 15 includes information acquisition/management section 1501 , information transmission section 1502 , storage section 1503 and control section 1504 .

Information acquisition/management unit 1501 communicates with UEs (communication terminal devices) 31 of a plurality of vehicles 30 located in a corresponding area via base station 16, and establishes connection from UE 31 to the base station in mobile communication network 15. It has a function as a means of managing The information acquisition/management unit 1501 acquires and manages connection information indicating that the UE 31 of each vehicle 30 is connected to the cell of the base station 16, for example. The connection information of UE31 is managed as an identifier (ncgi: NR Cell Global Identifier) for identifying the cell of the base station to which UE31 is connected, for example, in the fifth generation mobile communication system.

When the UE 31 of the vehicle 30 moving on the road 90 connects to the base station 16 in the destination area, the information transmission unit 1502 sends the MEC server used to provide services such as merging support to the vehicle 30 in the area. 10 has a function as means for notifying the communication address information (for example, terminal identifier) of the UE 31 connected to the base station 16 in the area. The communication address information of UE31 is an identifier of UE31 used for SMS or NIDD non-IP communication in the mobile communication network, or an IP address of UE31 used for IP communication in the mobile communication network. The information transmission unit 1502 also functions as means for transmitting security information used for authentication and confidential communication between the UE 31 of the vehicle 30 and the MEC server 10 to the MEC server 10 . The security information is, for example, an id (identification information) issued by a core network authentication function required for connection from the UE 31 of the vehicle 30 to the MEC server 10 and a security key or token.

The storage unit 1503 has a database function as means for storing connection information of the UE 31 of the vehicle 30, communication address information (for example, a terminal identifier) of the UE 31 to be notified to the MEC server 10, and security information.

A control unit 1504 reads and executes a predetermined control program to control each unit.

FIG. 3 is a block diagram showing an example of main functions of the MEC server (information processing device) 10 according to this embodiment. 3, the MEC server 10 includes a network side communication section 1001, a terminal side communication section 1002, a storage section 1003, and a control section 1004. FIG.

Network-side communication unit 1001 receives notification from core network device 150 of mobile communication network 15 when UE 31 of vehicle 30 connects to base station 16 in the destination area, and UE 31 connected to base station 16 in the area. has a function as means for receiving communication address information (for example, a terminal identifier). The communication address information of UE31 is an identifier of UE31 used for SMS or NIDD non-IP communication in the mobile communication network, or an IP address of UE31 used for IP communication in the mobile communication network. The network-side communication unit 1001 also functions as means for receiving security information used for authentication and confidential communication between the UE 31 of the vehicle 30 and the MEC server 10 from the core network device 150 .

Based on the communication address information of the UE 31 of the vehicle 30 received from the core network device 150, the terminal-side communication unit 1002 connects the communication address information of the MEC server 10 (for example, the URL of the MEC server 10 in the closed NW) and the MEC server 10 It has a function as means for notifying the UE 31 of a connection request (trigger) to the UE 31 . The communication address information of the MEC server 10 may be the URL of a service providing application in the MEC server 10 .

The storage unit 1003 has a function as means for storing communication address information (for example, a terminal identifier) and security information of the UE 31 received from the core network device 150 .

A control unit 1004 reads and executes a predetermined control program to control each unit. The control unit 1004 also functions as a means for executing an application for service provision such as joining support executed by the MEC server 10 .

FIG. 4 is a block diagram showing an example of main functions of a UE (communication terminal device) 31 of a vehicle 30 according to this embodiment. In FIG. 4 , UE 31 includes server side communication section 3101 , network side communication section 3102 , storage section 3103 and control section 3104 .

When the UE 31 of the vehicle 30 connects to the base station 16 in the destination area, the server-side communication unit 3101 receives information from the MEC server 10 used for providing services such as merging support for the vehicle 30 in the area. It functions as means for receiving communication address information (for example, the URL of the MEC server 10 in the closed NW) and a connection request (trigger) to the MEC server 10 . Here, the communication address information of the MEC server 10 may be the URL of an application (server application) for providing services such as the joining support in the MEC server 10 . Also, the connection request notification may include security information used for authentication and confidential communication between the UE 31 and the MEC server 10 . The communication address information of the MEC server 10 and the connection request to the MEC server 10 may be received by SMS or NIDD non-IP communication in the mobile communication network, or may be received by IP communication in the mobile communication network. .

The connection request notification from the MEC server 10 may include security information used for authentication and confidential communication between the UE 31 and the MEC server 10 .

In addition, the server-side communication unit 3101 connects the MEC server 10 or the server application via the base station 16 based on the communication address information of the MEC server 10 (for example, the URL of the MEC server 10) in response to the connection request (trigger). It has a function as a means to connect to

The network side communication unit 3102 has a function of communicating with each core network device of the mobile communication network 15 via the base station 16 .

The storage unit 3103 has a function as means for storing communication address information of the MEC server 10 (for example, the URL of the MEC server 10 in the closed NW) and security information.

The control unit 3104 reads and executes a predetermined control program to control each unit.

In addition, in FIG. 4, UE31 of the vehicle 30 may be provided with the vehicle-to-vehicle communication part 3105. FIG. The vehicle-to-vehicle communication unit 3105 transmits communication address information of the MEC server 10 received from the MEC server 10 (for example, the URL of the MEC server 10 in the closed area NW), security information, or both information to direct wireless communication between vehicles or It functions as a means of transmitting to UEs of other vehicles located in the vicinity via road-to-vehicle communication.

FIG. 5 is an explanatory diagram showing an example of information flow and processing for MEC connection support in the overall configuration of the system according to the present embodiment. FIG. 6 is a flow chart showing an example of a procedure for supporting MEC connection to the UE (communication terminal equipment) 31 of the vehicle 30 in the system of FIG. The examples of FIGS. 5 and 6 are examples when the UE 31 does not accept IP communication.

In the example of FIG. 5, a plurality of base stations 16X and 16Y are arranged along the road 90 in the vehicle traveling direction. The base station 16Y on the downstream side in the direction of travel of the vehicle forms a cell 160Y in an area including the confluence, which is the area to which the vehicle 30A moving ahead on the road 90 moves. The base station 16X on the upstream side in the direction of travel of the vehicle forms a cell 160X in the area where the following vehicle 30B is located.

again. The example of FIG. 5 shows an example of the configuration of a fifth generation or later generation mobile communication system. The core network device 150 of this embodiment includes an Access and Mobility Management Function (AMF) 151, a Session Management Function (SMF) 152, and a Policy Management Function (PCF) 152, which constitute a part of the C-plane (control-plane) function group of the core network. Control Function) 153. The AMF 151 is a node that transmits and receives control-related information to and from the UE 31 via the base station 16 and manages the mobility of the UE 31 . The SMF 152 is a node that transmits and receives user data to and from the UE 31 via the base station 16 and the UPF (User Plane Function) 18 and manages the session of the UE 31 . A PCF 153 is a node that performs policy control. The core network device 150 can communicate with the MEC server 10 via a NEF (Network Exposure Function) 154 . The UPF 18 constitutes a part of the U-plane (user-plane) function group and transfers user data between the UE 31 and the SMF 152 . Also, the UE 31 establishes a PDU (Protocol Data Unit) session with the UPF 18 via the base station 16, and can communicate via the UPF 18 with the MEC server 10 located in the LADN 17, which is a closed network. .

In FIG. 6, the preceding vehicle 30A connects to a specific base station (g-NodeB) 16Y forming a cell 160Y in the destination area (S101). For example, when the vehicle 30A connects to the base station (g-NodeB) 16Y defined as the LADN 17 of the closed area NW, the connection triggers a PDU session with the UPF 18 of the LADN 17.

The core network device 150 recognizes that the UE 31 of the preceding vehicle 30A has connected to the base station (g-NodeB) 16Y and manages it as ncgi (S102).

Triggered by the connection of UE31 to the base station (g-NodeB) 16Y in the destination area, the core network device 150 sends a message to the MEC server 10 on the LADN 17 to which the UE31 is connected via the NEF 154. is connected and the identifier of UE31 is notified (S103). "EventNotification" may be used for this notification.

The MEC server 10 uses the identifier of the UE 31 to notify the URL of the MEC server to the UE 31 via SMS or the NIDD communication channel of the mobile communication network 15 (S104).

The MEC server 10 receives security information (for example, security ID/key or token) used for authentication and confidential communication between the UE 31 and the MEC server 10 from the core network device 150 (S105).

The application running on the UE 31 accesses the MEC server 10 using connection information (URL) and security information (for example, security ID/key or token) of the MEC server 10 received via the core network in the mobile communication network 15. A connection is started (S106).

The UE 31 of the vehicle 30A transmits the connection information of the MEC server 10 and the connection trigger to the following vehicle 30B via the PC-5 of the vehicle-to-vehicle direct communication system (S107). Information transmitted to the subsequent vehicle 30B may include the security information.

FIG. 7 is a flow chart showing another example of the procedure for MEC connection support for the vehicle 30 to the UE (communication terminal equipment) 31 in the system of FIG. The example of FIG. 7 is an example when UE31 accepts IP communication. Note that S201, S202, S205 and S207 in FIG. 7 are common to S101, S102, S105 and S107 in FIG.

In FIG. 7, when UE31 is connected to the base station (g-NodeB) 16Y in the destination area, the core network device 150, via the NEF 154, to the MEC server 10 on the LADN 17 to which the UE31 is connected. Then, the connection of UE31 and the IP address of UE31 are notified (S203). "EventNotification" may be used for this notification.

The MEC server 10 notifies UE31 of the URL of the MEC server to the IP address of UE31 (S204).

The application running on the UE 31 uses the connection information (URL) of the MEC server 10 received from the MEC server 10 and the security information (for example, security ID/key or token) received via the core network in the mobile communication network 15. to start connecting to the MEC server 10 (S206).

As described above, according to the present embodiment, when providing services such as merging support to the vehicle (mobile body) 30 via the mobile communication network 15, the UE (communication terminal equipment) 31 of the vehicle 30 is sent from the base station 16. Regardless of the strength of the received signal, the UE 31 of the vehicle 30 can stably connect to the MEC server (information processing device) 10 used for service provision.

Also, according to this embodiment, the UE 31 of the vehicle 30 can access the MEC server 10 at an appropriate place and timing. Also, the MEC server 10 can notify the UE 31 of the vehicle 30 of its own application without being aware of (cooperating with) the application on the public server.

In addition, since the present invention enables stable connection from the UE 31 of the vehicle 30 to the MEC server 10, it contributes to the achievement of Goal 9 of the Sustainable Development Goals (SDGs), "Industry and technological innovation." can.

In addition, the processing steps and systems, core network devices, information processing devices (servers), base stations and communication terminal devices (terminals, terminal devices, user equipment (UE), mobile stations, mobile devices) described in this specification A component may be implemented by various means. For example, these processes and components may be implemented in hardware, firmware, software, or any combination thereof.

For hardware implementation, means such as processing units used to implement the above steps and components in an entity (e.g., various wireless communication devices, Node Bs, terminals, hard disk drives, or optical disk drives) are: One or more of an application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processor (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor , controllers, microcontrollers, microprocessors, electronic devices, other electronic units designed to perform the functions described herein, computers, or combinations thereof.

Also, for firmware and/or software implementations, means such as processing units used to implement the above components may be programs (e.g., procedures, functions, modules, instructions) that perform the functions described herein. , etc.). In general, any computer/processor readable medium tangibly embodying firmware and/or software code means, such as a processing unit, used to implement the above steps and components described herein. may be used to implement For example, firmware and/or software code may be stored in memory and executed by a computer or processor, such as in a controller. The memory may be implemented within the computer or processor, or external to the processor. The firmware and/or software code may also be, for example, random access memory (RAM), read only memory (ROM), non-volatile random access memory (NVRAM), programmable read only memory (PROM), electrically erasable PROM (EEPROM). ), flash memory, floppy disk, compact disk (CD), digital versatile disk (DVD), magnetic or optical data storage devices, etc. good. The code may be executed by one or more computers or processors and may cause the computers or processors to perform certain aspects of the functionality described herein.

Also, the medium may be a non-temporary recording medium. Also, the code of the program is not limited to a specific format as long as it can be read and executed by a computer, processor, or other device or machine. For example, the program code may be source code, object code or binary code, or may be a mixture of two or more of these codes.

Moreover, the description of the embodiments disclosed herein is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein are applicable to other variations without departing from the spirit or scope of this disclosure. This disclosure, therefore, is not to be limited to the examples and designs described herein, but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

10: MEC server (information processing device)
15: Mobile communication network 16: Base station 16X: Base station 16Y: Base station 30: Vehicle (moving body)
31: UE (communication terminal equipment)
90: Road (moving route)
150: core network device

Claims (21)

A core network device of a mobile communication network,
means for managing connection from a communication terminal device to a base station in the mobile communication network;
Triggered by the fact that a communication terminal device of a mobile body moving along a movement route is connected to a base station in a destination area, an information processing device used to provide services to the mobile body in the area is connected to the base station in the area. means for notifying communication address information of the connected communication terminal device;
A core network device comprising: The core network device of claim 1,
A core network device comprising means for transmitting security information used for authentication and confidential communication between the communication terminal device and the information processing device to the information processing device. 3. In the core network device of claim 1 or 2,
A core network device, wherein the communication address information of the communication terminal device is an identifier of the communication terminal device used for SMS or NIDD non-IP communication in the mobile communication network. 3. In the core network device of claim 1 or 2,
A core network device, wherein the communication address information of the communication terminal device is an IP address of the communication terminal device used for IP communication in the mobile communication network. An information processing device used to provide a service to a moving body moving along a movement route,
Communication address information of the communication terminal device connected to the base station of the area notified by the core network device of the mobile communication network when the communication terminal device of the mobile body is connected to the base station of the destination area a means for receiving;
means for notifying the communication terminal device of the communication address information of the information processing device and a connection request to the information processing device based on the communication address information of the communication terminal device;
An information processing device. In the information processing device according to claim 5,
The information processing device, wherein the communication address information of the information processing device is a URL of the application for providing the service in the information processing device. In the information processing device according to claim 5 or 6,
The information processing device is a base station of a mobile communication network, a node between the base station and a core network, or an MEC (Multi-access Edge Computing) device provided outside the core network. In the information processing device according to any one of claims 5 to 7,
means for receiving security information used for authentication and confidential communication between the communication terminal device and the information processing device from the core network device;
The information processing device, wherein the notification from the information processing device to the communication terminal device includes the security information. In the information processing device according to any one of claims 5 to 8,
The information processing device, wherein the communication address information of the communication terminal device is an identifier of the communication terminal device used for SMS or NIDD non-IP communication in the mobile communication network. In the information processing device according to any one of claims 5 to 8,
The information processing device, wherein the communication address information of the communication terminal device is an IP address of the communication terminal device used for IP communication in the mobile communication network. A communication terminal device provided for a moving body that moves along a movement route,
When the mobile communication terminal device is connected to a base station in a destination area, communication address information of the information processing device and the information processing device from an information processing device used to provide services to the mobile device in the area. means for receiving a connection request to
means for connecting to the information processing device via the base station based on the communication address information of the information processing device in response to the connection request;
A communication terminal device. In the communication terminal device according to claim 11,
A communication terminal device comprising means for transmitting the connection information received from the information processing device to a communication terminal device of another mobile device located in the vicinity via direct wireless communication between mobile devices or road-to-vehicle communication. In the communication terminal device according to claim 11 or 12,
The communication terminal device, wherein the communication address information of the information processing device is a URL of the service providing application in the information processing device. In the communication terminal device according to any one of claims 11 to 13,
A communication terminal device, wherein the notification of the connection request from the information processing device includes security information used for authentication and confidential communication between the communication terminal device and the information processing device. In the communication terminal device according to any one of claims 11 to 14,
A communication terminal device that receives communication address information of the information processing device and a connection request to the information processing device by SMS or NIDD non-IP communication in a mobile communication network. In the communication terminal device according to any one of claims 11 to 14,
A communication terminal device that receives communication address information of the information processing device and a connection request to the information processing device by IP communication in a mobile communication network. A moving body that moves along a moving path,
A mobile body comprising the communication terminal device according to any one of claims 11 to 16. A system comprising the core network device according to claim 1 and the information processing device according to claim 5. A program executed in a computer or processor provided in a core network device of a mobile communication network,
a program code for managing connection from a communication terminal device to a base station in the mobile communication network;
Triggered by the fact that a communication terminal device of a mobile body moving along a movement route is connected to a base station in a destination area, an information processing device used to provide services to the mobile body in the area is connected to the base station in the area. a program code for notifying communication address information of the connected communication terminal device;
program, including A program to be executed in a computer or processor provided in an information processing device used to provide services to a moving body moving along a movement route,
Communication address information of the communication terminal device connected to the base station of the area notified by the core network device of the mobile communication network when the communication terminal device of the mobile body is connected to the base station of the destination area program code for receiving;
a program code for notifying the communication terminal device of communication address information of the information processing device and a connection request to the information processing device based on the communication address information of the communication terminal device;
program, including A program executed in a computer or processor provided in a communication terminal device of a mobile body that moves along a movement route,
When the mobile communication terminal device is connected to a base station in a destination area, communication address information of the information processing device and the information processing device from an information processing device used to provide services to the mobile device in the area. program code for receiving a connection request to
a program code for connecting to the information processing device via the base station based on the communication address information of the information processing device in response to the connection request;
program, including

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