KR102148848B1 - Method for managing extension of wave service using the mobile communication - Google Patents

Abstract

The present invention relates to a method of managing the extension of wireless access for vehicle environment (WAVE) service using mobile communication. The method is capable of quickly realizing a WAVE service to a nearby vehicle through a mobile communication network as well as a WAVE communication network in case of an emergency situation of a vehicle regardless of the presence or absence of an on board unit (OBU) or a road side unit (RSU).

Description

Extended operation method of WAVE service using mobile communication {METHOD FOR MANAGING EXTENSION OF WAVE SERVICE USING THE MOBILE COMMUNICATION}

The present invention relates to a method of expanding WAVE service using mobile communication, and more particularly, to a nearby vehicle through a mobile communication network in addition to a WAVE communication network in case of an emergency situation of a vehicle regardless of the presence or absence of a vehicle terminal in the vehicle or a roadside station. The present invention relates to a method of expanding WAVE service using mobile communication so that it can be realized quickly.

In recent years, with the development of vehicle operation support technology, C-ITS (Cooperative Intelligent Transport Systems), wireless communication technology WAVE (Wireless Access for Vehicle Environment) service, which is a core technology for cooperative driving and autonomous driving, has been actively studied.

This WAVE provides a service that enables drivers to save safety, convenience and fuel consumption through vehicle communication technology, transmits and receives information from traffic infrastructure to control the vehicle, and provides services on roads and accident-prone areas around schools. It provides safety services to control vehicle speed by sending speed limit information or dangerous situation information to the vehicle.

Furthermore, the autonomous driving technology minimizes the driver's driving operation by recognizing the surrounding environment, determining the risk, and manipulating vehicle behavior by the car itself, enabling the development of various technologies for human-friendly vehicles that can provide safe driving and connected services.

Currently, advanced driver assistance devices (ADAS: Advanced Driver Assistance System) enable autonomous driving using various sensors and vehicle and road condition information obtained through V2X (Vehicle to Everything) communication, a wireless communication of the vehicle environment. Control technology is being developed, and vehicle status information and road status information are wirelessly communicated in real time through V2X (Vehicle to Everything) communication such as V2I (Vehicle to Infrastructure) between vehicles and infrastructure, and V2V (Vehicle to Vehicle) between vehicles. The technology to do is attracting attention.

Figure 1a is an image showing the appearance of the vehicle and roadside base station communication V2I and vehicle-to-vehicle communication V2V introduced in the omni-directional WAVE antenna (Korean Patent Publication No. 1920616) according to the prior art document, and FIG. This is an image viewed from the top of the vehicle and vehicle-to-vehicle communication V2V introduced in the omnidirectional wave antenna according to the technical literature.

As shown in FIG. 1A, WAVE (Wireless Access for Vehicle Environment) communication enables the exchange of information from various directions, that is, from a roadside station or other vehicle, and as shown in FIG. It can be seen from prior art literature that WAVE communication can be realized regardless of intervals and lanes.

The applicant of the present application intends to further improve and develop the WAVE communication introduced in the prior art document and propose the present invention.

Republic of Korea Patent Publication No. 1920616-Omnidirectional WAVE Antenna

An object of the present invention is a method of expanding WAVE service using mobile communication to quickly realize WAVE service to nearby vehicles through a mobile communication network as well as a WAVE communication network in case of an emergency situation of a vehicle regardless of the presence or absence of a vehicle terminal in the vehicle or a roadside station In providing.

It is an object of the present invention to connect an electronic control device in a vehicle with a mobile terminal as a vehicle interface, so that not only the sudden speed decrease of the vehicle, but also all emergency situations in the vehicle are transmitted to the operating system through the mobile terminal and mobile communication base station, and then the roadside base station It is to provide an extended operation method of the WAVE service using mobile communication that enables more precise management of emergency situations of road traffic by transmitting emergency signals to vehicle terminals or mobile terminals through mobile communication base stations.

The present invention for achieving the above object,

A vehicle equipped with an electronic control device or an operating system that manages roadside base stations as WAVE network control and WAVE service along with vehicles B equipped with an electronic control device and at the same time as a vehicle terminal, and the vehicles A through a mobile communication network And a mobile communication base station for mobile communication with mobile terminals in vehicles B, comprising: an extended operation method of a WAVE service using mobile communication;

Obtaining location information of the mobile terminals in the vehicles A and B at the mobile communication base station and transmitting the information to the operating system;

The location information of the mobile terminal in the rapidly degraded vehicle A received through the mobile communication base station when any one of the driving of the vehicles A rapidly decreases, and the operating system determines it as an emergency state and passes through the mobile communication base station. Thus, the emergency signal is transmitted to the mobile terminals around the rapidly degraded vehicle A, and the emergency signal is transmitted to the vehicle terminals of the vehicles B around the rapidly degraded vehicle A via the roadside station, and the As the location information of the mobile terminal in the rapidly degraded vehicle B, received through the mobile communication base station when any one of the vehicles B is traveling, the operating system determines that it is in an emergency state and passes through the mobile communication base station. In addition to transmitting an emergency signal to the mobile terminals around the rapidly degraded vehicle B, the emergency signal is transmitted to the vehicle terminals of other vehicles B around the rapidly degraded vehicle B via the roadside station. The emergency information of the vehicle terminal of vehicle B, which has been rapidly degraded through the roadside station, is judged as an emergency state by the operating system, and the mobile terminals around the vehicle B which have been rapidly deteriorated through the mobile communication base station are emergency information. Transmitting a signal and transmitting an emergency signal to the vehicle terminals of other vehicles B around the rapidly degraded vehicle B via the roadside base station;

A basic feature of the technical method includes a step of communicating an emergency signal to each other through a vehicle terminal between the vehicle A or other vehicles B around the vehicle B, which has rapidly decreased in speed.

The present invention has the effect of enabling safer vehicle driving by allowing a WAVE communication network and a mobile communication network to quickly realize a WAVE service to a nearby vehicle through a mobile communication network in case of an emergency situation of a vehicle regardless of the presence or absence of a vehicle terminal in the vehicle or a roadside station. .

The present invention connects an electronic control device in a vehicle with a mobile terminal as a vehicle interface, so that not only the sudden speed reduction of the vehicle, but also all emergency situations in the vehicle are transmitted to the operating system through the mobile terminal and mobile communication base station, and then again through the roadside base station. There is an effect of enabling more precise management of emergency situations of road traffic by transmitting an emergency signal to a mobile terminal through a terminal or a mobile communication base station.

The present invention has the effect of transmitting all emergency situations from an electronic control device in a vehicle to a portable terminal.

Figure 1a is an image showing the appearance of the vehicle and roadside base station communication V2I and vehicle-to-vehicle communication V2V introduced in the omni-directional WAVE antenna according to the prior art document.
Figure 1b is an image viewed from the top of the vehicle and vehicle-to-vehicle communication V2V introduced in the omni-directional WAVE antenna according to the prior art document.
2A and 2B are block diagrams for explaining a general WAVE service.
3A is a block diagram for explaining a method of expanding WAVE service using wireless communication in an environment in which no roadside base station is installed according to the present invention.
3B is a block diagram illustrating a method of expanding WAVE service using mobile communication in an environment in which a roadside base station is installed and a vehicle terminal is installed in a vehicle according to the present invention.
3C is a block diagram for explaining a method of expanding WAVE service using mobile communication through a mobile terminal in an environment in which a roadside base station is installed and a vehicle terminal is installed in a vehicle according to the present invention.

A preferred embodiment of a method of expanding WAVE service using mobile communication according to the present invention will be described with reference to the drawings, and there may be a number of embodiments thereof. Through this embodiment, the objects and characteristics of the present invention And better understand the benefits.

2A and 2B are block diagrams for explaining a general WAVE service.

The WAVE service is composed of V2V and V2I as shown in Figs. 2A and 2B, and V2V (Vehicle to Vehicle) provides vehicle-to-vehicle communication, and V2I (Vehicle to Infrastructure) is between vehicle and infrastructure (RSU; roadside base station). It refers to communication, and in areas where there is no infrastructure (RSU; roadside base station), information such as emergency situations can be spread to other vehicles only with V2V.

At this time, in the case of V2V, since vehicle-to-vehicle communication is performed, the communication range is irregular, and reception is not possible in a vehicle without WAVE service.

Specifically, the WAVE service is realized by a vehicle terminal (OBU-On Board Unit) and a roadside base station (RSU-Road Side Unit), and the vehicle terminal (OBU) is a vehicle terminal (OBU) of surrounding vehicles. ) And infrastructure (RSU), and the roadside base station (RSU) delivers various information received from the vehicle to the operating system, and delivers key information of the operating system to the vehicle terminal (OBU).

However, in the case of the WAVE service as shown in FIGS. 2A and 2B, in the case of a vehicle without a vehicle terminal (OBU), an emergency situation and notification service is impossible, and monitoring of an emergency situation in an area where the roadside base station (RSU) is not installed is impossible. In addition, there is a problem in that a shadowed area occurs for the transmission of important information due to surrounding fixed/moving obstacles.

On the other hand, for the safe operation of vehicles, it is necessary to provide a service that can quickly and accurately deliver sensitive information to vehicles in a specific area, and an operation that manages traffic conditions in an environment without infrastructure such as a roadside base station (RSU). The system must be capable of extensive monitoring.

Eventually, the WAVE service supports vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication, but there is a limitation in that a vehicle without a vehicle terminal (OBU) cannot receive the WAVE service. Accordingly, in the present invention, WAVE It is intended to be able to realize service expansion using mobile communication, for example, LTE as an auxiliary means of service.

3A is a block diagram for explaining a method of extending WAVE service using wireless communication in an environment where a roadside base station (RSU) is not installed according to the present invention, and FIG. 3B is a It is a block diagram for explaining the extended operation method of the WAVE service using mobile communication in an environment in which a vehicle terminal (OBU) is installed while being installed, and FIG. 3C is a vehicle terminal in a vehicle while a roadside base station is installed according to the present invention. It is a block diagram for explaining the extended operation method of the WAVE service using mobile communication through a mobile terminal in an environment in which (OBU) is installed.

According to the present invention, since emergency information cannot be received in a situation in which a vehicle terminal (OBU) is not installed, emergency information is transmitted to the driver by using mobile communication (LTE communication or 5G communication) through a mobile terminal such as a smartphone. It was made possible to deliver.

In other words, it is possible to monitor vehicle information even in an environment where a roadside base station (RSU) is not installed, and to assist safe driving by transmitting emergency information or operation assistance information to the vehicle, and by using the location information of the vehicle. It is to be able to deliver driving assistance information to vehicles located in the area.

To this end, mobile communication (LTE communication or 5G communication) such as a smartphone is operated as needed, so that the service can be extended to drivers other than the WAVE network.

As described above, a typical WAVE service is composed of a roadside base station (RSU) and a vehicle terminal (OBU), and performs communication using these devices. The roadside base station (RSU) transmits the periodic location and status information transmitted from the vehicle terminal (OBU) to the operating system, and transmits the information to surrounding vehicles according to the command of the operating system.

When an emergency situation occurs in a vehicle with a vehicle terminal (OBU) installed, the information is propagated to other vehicles through V2V and V2I, and the situation is notified to the operating system through the roadside base station (RSU) through V2I. have.

Since V2V is transmitted from a vehicle to another vehicle, the transmission range may be affected by the surrounding environment more than V2I, and the communication range may be limited.

In order to carry out emergency information transmission in a wide area, there is a method of disseminating information through a roadside base station (RSU) or through vehicle relay, but the dissemination of emergency information between vehicles has many technical problems such as temporary transmission information saturation. Have.

That is, in an environment without a roadside base station (RSU), service restrictions may occur severely depending on the surrounding environment, and an emergency situation cannot be propagated to a vehicle that does not have a vehicle terminal (OBU) installed.

In order to expand the WAVE service, a service can be provided to receive emergency information generated in the surrounding area by using mobile communication (LTE communication or 5G communication). In other words, by periodically reporting its location information to the operating system using LTE network or 5G network from LTE devices such as smartphones or mobile terminals such as 5G devices, the location of the vehicle generating emergency information in the operating system at the time when emergency information occurs. Based on this, the service area range is determined, and the related information of the mobile terminal that needs to be transmitted is transmitted through the operating system and mobile communication base station so that the driver of the vehicle can receive emergency information of the surrounding area.

Since surrounding information can be delivered to a user who uses a mobile terminal, it is possible to provide an extended service that can deliver related information to not only a vehicle driver, but also a passenger or a pedestrian.

Meanwhile, in order to support the WAVE service, V2V and V2I can be supported only when there is a roadside base station (RSU) and a vehicle terminal (OBU) located in each vehicle.

In other words, in an environment without a roadside base station (RSU), monitoring in the operating system through the roadside base station (RSU) becomes impossible or dissemination of risk information through the operating system becomes impossible, and in an environment without a vehicle terminal (OBU), Risk information sent by vehicles or traffic information sent from the operating system cannot be utilized.

This limitation acts as a major obstacle to the expansion of services in the vehicle safe driving environment through V2X communication. Currently, even if the vehicle safety service is provided using 5G in the C-V2X environment, the same limitation occurs.

In order to overcome this, in the present invention, it is conceived that almost all vehicles have a mobile terminal (smartphone) (the driver or passenger has a smartphone), and the WAVE service can be supplemented using a mobile communication network such as LTE or 5G. It was suggested to be.

Typical WAVE services can be divided into roadside base stations (RSU), vehicle terminals (OBU), and operating systems. The operating system is connected to the roadside base station (RSU) through optical communication, and the roadside base station (RSU) is connected to enable vehicle terminal (OBU) and WAVE service. That is, the roadside base station (RSU) is used as a medium that can connect the operating system and the vehicle terminal (OBU), and the vehicle terminal (OBU) and the vehicle terminal (OBU).

Meanwhile, in an environment without a roadside base station (RSU), the WAVE service cannot be provided normally. Furthermore, in the absence of a roadside base station (RSU), it is all possible to provide a service that transmits emergency information to nearby vehicles through V2V communication between vehicle terminals (OBU). In addition, a vehicle that does not have an OBU installed has a problem that it cannot receive all services at all.

In order to overcome this problem, the present invention attempts to overcome the aforementioned disadvantages by using mobile communication including LTE communication or 5G communication as shown in FIG. 3B.

On the other hand, as shown in FIG. 3A, in an environment where the roadside base station (RSU) is not installed, it is impossible to propagate emergency information through V2I communication, and there is no way to transmit various types of information transmitted from the operating system to vehicles in a specific area.

In such an environment, it is possible to share emergency information by transmitting emergency information of the vehicle to the operating system through mobile communication such as LTE and utilizing the location information of each vehicle in the operating system.

In this way, even when the vehicle does not have an OBU installed, the surrounding situation can be identified, and useful traffic information transmitted from the operating system can be shared together.

All vehicles using the WAVE service report the location of the vehicle to the operating system at regular intervals. By collecting the location/status information of the vehicle through a smartphone including these information, it is possible to secure more vehicle locations.

The operating system internally defines the range of the area where the location information of the vehicle in which emergency information is generated or the traffic guide information is transmitted, selects vehicles that use all services included in the area, and delivers the relevant information to their smartphones.

The portable terminal installs an application app as a smartphone, for example, to supplement the functions of the vehicle terminal (OBU). In other words, the driving assistance information transmitted from the operating system can be notified to the user through the smartphone.

In addition, emergency information of the vehicle can be sent to the operating system through an application app, and information can be provided so that the operating system can propagate it to other smart phone users in the vicinity.

For this linkage, the application app can periodically transmit its location and status to the operating system. In addition, even in a situation that is not connected to the electronic control unit (ECU) of the vehicle, it is possible to determine a sudden speed decrease and transmit the information to the operating system.

Ultimately, in order to supplement the function of the vehicle terminal (OBU), information is acquired using a means for obtaining information from the electronic control unit (ECU) of the vehicle and propagated through the mobile communication network.

In order for the application app to collect vehicle information, it needs a method of connecting it to the vehicle's electronic control unit (ECU). To this end, it is possible to obtain information on the electronic control unit (ECU) of the vehicle through a vehicle interface dongle such as OBD (On-Board Diagnostics).

In order to combine these functions with a mobile terminal, wireless such as Bluetooth or wired such as serial can be used, and an interface structure that can be directly connected to the mobile terminal from the vehicle according to the direction/trend of service distribution is provided. It may be possible to do it.

There may be a way to use a sensor that the smartphone has itself, but since reliability is low, receiving and processing information from the vehicle's ECU using an interface that serves as such a connector can generate a reliable emergency signal. There is a way.

On the other hand, as shown in FIG. 3B, a more complex process occurs in an environment in which a roadside base station (RSU) is installed.

If there is a roadside base station (RSU), the operation is divided according to whether the emergency signal is generated by a vehicle equipped with a vehicle terminal (OBU) or a vehicle without a vehicle terminal (OBU) but receiving WAVE service with a mobile terminal. Can be defined.

Specifically, when emergency information occurs in a vehicle equipped with a vehicle terminal (OBU), the emergency information is transmitted to the roadside base station (RSU) through the vehicle terminal (OBU) using a WAVE network. The information transmitted in this way is transmitted to vehicles equipped with other vehicle terminals (OBU) through the roadside base station (RSU) or is propagated to V2V, and the roadside base station (RSU) receives the emergency information and sends the information to the operating system at the same time. Will be delivered. Up to this point, the operation for WAVE service is the same.

As mentioned above, the operating system receiving the emergency information manages the location of each mobile terminal, and at the same time receives the emergency information, searches for the location of the vehicle using the location of the mobile terminal, and determines the neighboring area to carry the corresponding mobile terminal. Emergency services can be provided by sending emergency signals to the terminal.

Furthermore, as shown in Fig. 3c, when emergency information occurs in a vehicle without an OBU, a vehicle without an OBU acquires the emergency information of the vehicle through the mobile terminal and moves it. It is transmitted to the operating system through the communication network.

Based on the location of emergency information, the operating system checks whether there is a roadside base station (RSU) in the area, and if the corresponding roadside base station (RSU) exists, the roadside base station can propagate emergency information to nearby vehicle terminals (OBU). (RSU) will be informed.

At the same time, it searches for nearby vehicles of the emergency information generating vehicle and, if there is a nearby vehicle, transmits emergency information to each vehicle through the mobile communication network to UNICAST, so that emergency information can be spread.

Based on the above contents, a specific proposal for a method of expanding WAVE service using mobile communication according to the present invention will be described with reference to FIG. 3C.

In the method of expanding WAVE service using mobile communication according to the present invention, vehicles A (A) equipped with electronic control units (ECUs) or electronic control units (ECUs) are mounted, and at the same time, vehicle terminals (OBU) are installed. -An operating system managed as WAVE (Wireless Access for Vehicle Environment) network control and WAVE service through RSU (Road Side Unit) along with B vehicles (B) with On Board Unit, and mobile communication network A It includes a mobile communication base station (MCBS-Mobile Communications Base Station) for mobile communication with mobile terminals in vehicles A and B vehicles, and more specifically A vehicles (A) and B vehicles (B) A step (S10) of securing the location information of the mobile terminals in the field and transmitting it to the operating system; This is the location information of the mobile terminal in vehicle A (A), which has rapidly decreased in speed, received through the mobile communication base station during any one of the driving of vehicle A (A).The operating system determines that the mobile communication base station is in an emergency. Emergency signals are transmitted to the mobile terminals around vehicle A (A), which has rapidly deteriorated via the roadside station, as well as emergency to vehicle terminals of vehicles B (B) around vehicle A (A), which rapidly slowed down via the roadside station. It transmits a signal, and is determined as an emergency state by the operating system as the location information of the mobile terminal in vehicle B (B), which has rapidly deteriorated in speed, received through the mobile communication base station when any one of vehicle B (B) is driving rapidly decreases. In addition, it transmits emergency signals to mobile terminals around vehicle B (B), which has rapidly deteriorated through the mobile communication base station, and other vehicles B (B) in the vicinity of vehicle B (B), which rapidly slowed down via the roadside base station, ), while transmitting emergency signals to their vehicle terminals, the operation system determines the emergency information of the vehicle terminal of vehicle B, which has rapidly slowed down, received through the roadside station, and speeds up rapidly through the mobile communication base station. In addition to transmitting emergency signals to mobile terminals around the degraded vehicle B (B), it also transmits emergency signals to vehicle terminals of vehicle B (B) around vehicle B (B), which has rapidly deteriorated in speed via the roadside station. A step (S20) and; It characterized in that it comprises a step (S30) of communicating an emergency signal to each other through a vehicle terminal between the vehicle A (A) or vehicle B (B) surrounding the vehicle B (B), which has rapidly decreased in speed.

With such features, regardless of the presence or absence of an in-vehicle terminal (OBU) or a roadside base station (RSU), in an emergency situation of a vehicle, a WAVE communication network as well as a mobile communication network can be used to quickly realize the WAVE service to nearby vehicles, making the vehicle safer. You will be able to drive.

At this time, in step S10, the mobile terminals in the A vehicles (A) and the mobile terminals in the B vehicles (B) are electronic control devices of the A vehicles (A) and B vehicles (B) through each vehicle interface ( ECU), each obtaining an emergency situation and transmitting it as an emergency signal to the operating system via a mobile communication base station, and in the step S20, the operating system is the vehicle A transmitted through the vehicle interface, the mobile terminal and the mobile communication base station. It includes transmitting the emergency signals of the vehicles (A) and B (B) to the vehicle terminals of the surrounding mobile terminals or the roadside base stations of the B vehicles (B) through the mobile communication base station.

By connecting the in-vehicle electronic control device to the mobile terminal as a vehicle interface, not only the sudden speed decrease of the vehicle, but also all emergency situations in the vehicle are transmitted to the operating system through the mobile terminal and mobile communication base station, and then the vehicle terminal (OBU) through the roadside base station again. ) Or, by transmitting an emergency signal to a mobile terminal through a mobile communication base station, it is possible to manage more precise road traffic emergency situations.

In the step S10, the vehicle interface is a Bluetooth or OBD dongle that connects the electronic control unit (ECU) and mobile terminals respectively mounted on the A vehicles (A) or B vehicles (B). Diagnostic Dongle), which makes it more preferable to transmit all emergency situations from the electronic control device in the vehicle to the mobile terminal.

The present invention can be used in an industrial field that can supplement WAVE service with mobile communication.

ECU: Electronic control device
OBU: Vehicle terminal
RSU: Roadside Base Station

Claims (3)

A vehicle equipped with an electronic control device or an operating system that manages roadside base stations as WAVE network control and WAVE service along with vehicles B equipped with an electronic control device and at the same time as a vehicle terminal, and the vehicles A through a mobile communication network And a mobile communication base station for mobile communication with mobile terminals in vehicles B, comprising: an extended operation method of a WAVE service using mobile communication;
Securing the location information of the mobile terminals in the vehicles A and B at the mobile communication base station and transmitting it to the operating system (S10);
The location information of the mobile terminal in the rapidly degraded vehicle A received through the mobile communication base station when any one of the driving of the vehicles A rapidly decreases, and the operating system determines it as an emergency state and passes through the mobile communication base station. Thus, the emergency signal is transmitted to the mobile terminals around the rapidly degraded vehicle A, and the emergency signal is transmitted to the vehicle terminals of the vehicles B around the rapidly degraded vehicle A via the roadside station, and the As the location information of the mobile terminal in the rapidly degraded vehicle B, received through the mobile communication base station when any one of the vehicles B is traveling, the operating system determines that it is in an emergency state and passes through the mobile communication base station. In addition to transmitting an emergency signal to the mobile terminals around the rapidly degraded vehicle B, the emergency signal is transmitted to the vehicle terminals of other vehicles B around the rapidly degraded vehicle B via the roadside station. The emergency information of the vehicle terminal of vehicle B, which has been rapidly degraded through the roadside station, is judged as an emergency state by the operating system, and the mobile terminals around the vehicle B which have been rapidly deteriorated through the mobile communication base station are emergency information. A step (S20) of transmitting an emergency signal to the vehicle terminals of other vehicles B around the rapidly degraded vehicle B via the roadside base station while transmitting a signal;
The method of expanding WAVE service using mobile communication, comprising the step (S30) of communicating an emergency signal to each other through a vehicle terminal between the vehicle A or other vehicles B around the rapidly degraded vehicle B. . The method of claim 1,
In the step S10, the mobile terminals in the A vehicles and the mobile terminals in the B vehicles obtain emergency situations from the electronic control devices of the A vehicles and B vehicles through respective vehicle interfaces, and the mobile communication base station is configured. Including transmitting as an emergency signal to the operating system via via,
In the step S20, the operating system transmits the emergency signals of the vehicles A and B transmitted through the vehicle interface, the mobile terminal, and the mobile communication base station through the mobile communication base station through the mobile terminals or roadside base stations. A method of expanding WAVE service using mobile communication, comprising transmitting to a vehicle terminal of the B vehicles in the vicinity. The method of claim 2,
In the step S10, the vehicle interface is a Bluetooth or an OBD dongle that connects the mobile terminals and the electronic control devices mounted on the A vehicles or B vehicles, respectively. Extended operation method of WAVE service using mobile communication.

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