KR102012302B1 - Supporting Method For Connected Car Services Using Mobile Device - Google Patents

Abstract

The present invention relates to a method and apparatus for supporting a connected car service using a mobile device of a vehicle occupant, which can quickly cope with a frequently changing vehicle flow by changing a mobile virtual fence. According to the present invention, the method for supporting a connected car service comprises the steps of: collecting, by a mobile device of a client, location information using a GPS signal; generating, by the mobile device, a mobile virtual fence independently applied to the corresponding client based on the collected location information; changing, by the mobile device, a coverage of the generated mobile virtual fence according to a moving speed; selecting, by a management server receiving the information from the mobile device, other clients in a connectivity group that overlap with the changed mobile virtual fence and have the same connectivity in a same direction; and transmitting, by the management server, location information and identification information of another client belonging to the connectivity group to the mobile device of the client belonging to the connectivity group through a communication base station.

Description

Supported method for connected car services using mobile device}

The present invention provides a connected car service using a mobile device capable of quickly coping with a constantly changing vehicle flow by changing a mobile virtual fence independently applied to each vehicle based on vehicle position information collected using a vehicle occupant's mobile device. It is about how to apply.

Moving away from the classic concept of transport, in which cars rely solely on internal combustion engines to carry passengers or cargo, autonomous cars that control themselves and drive to their destinations are recognized as a high value-added industry of the future.

Autonomous driving technology for automobiles can not be implemented by a specific technology in any one field, but a combination of various technologies such as computer vision, artificial intelligence, radar, lidar, sensors, and communication. Among various technologies for autonomous driving, the vehicle-to-vehicle communication technology communicates with each other and the infrastructure equipment installed in or around the road to exchange information on traffic or road conditions, ultimately preventing or reducing car accidents. It plays a role of smooth traffic and enables autonomous driving.

Recently, research on a connected car that detects the surrounding environment through a sensor and a computer attached to the vehicle and exchanges the detected environmental data with the surrounding vehicle is being actively conducted.

Connected Car is a technology that seeks to provide a safe and comfortable driving experience through real-time communication using mobile Internet technology through a smartphone, smart watch, tablet device or computer. According to a report by BI Intelligence, an international market research firm, the connected car market is expected to account for 67 million connected cars connected to wireless mobile communication, or 75% of the world's 92 million cars, by 2020. Gartner, an information technology and advisory firm, predicts that by 2020, one in five cars driving around the world will be wirelessly connected.

In order to construct the connected car service environment, various sensors for detecting the surrounding environment and infrastructure equipment installed around the road are required.In addition, the infrastructure for supporting secure and high-speed communication technology for transmitting collected data is needed. The huge costs have hampered the commercialization of connected car services.

The connected car service environment will be commercially available from 2020 to 2030. Vehicles released before 2020 will not be able to use the connected car service. In addition, since before-market vehicles (BM) and existing after-market vehicles, which will be produced from 2020 to 2030, coexist, there is no sensor or network infrastructure necessary to provide connected car service. AM vehicles will be charged an additional cost to provide connected car service.

As a method for the AM vehicle to receive the connected car service at no additional cost, a method of configuring a connected car environment using a smart phone has been studied. According to Australian market research firm TNS and Korea's KT Institute for Economic Management, in the first half of 2016, smartphone penetration rate in the world's 50 major countries reached 70%, and domestic smartphone penetration rate reached about 90%. As of 2018, according to market research firm Zenith, two out of three adults worldwide will use smartphones in 2019. With this high smartphone penetration rate, most drivers are expected to use smartphones between 2020 and 2030, so if you configure a connected car service environment using smartphones, you will be able to provide connected car services at no additional cost in AM vehicles. This is possible and service is available at a low cost even in BM vehicles.

Under these circumstances, existing vehicles that were released before the connected car service environment was established need a technology to communicate with each other at no additional cost and to receive traffic conditions around them. Furthermore, when information is indiscriminately received from neighboring vehicles in a vehicle-to-vehicle environment, there is a problem in that communication traffic increases so that an emergency message for notifying a vehicle accident or a congestion section is not received.

1. Registered Patent No. 10-1446546 (September 25, 2014. Registered "Location Based Real Time Vehicle Information Display System") 2. Korean Patent Publication No. 10-2017-0054783 (2017.05.18 published "traffic information collection method and system using a smartphone") 3. Registered Patent No. 10-1882424 (2018.07.20. Registered "real-time traffic information generation system using beacon information")

none

An object of the present invention is to provide a method for supporting a connected car service using a mobile device capable of performing inter-vehicle communication by varying a mobile virtual fence independently applied to a vehicle.

Another object of the present invention is to form a fence network connected to at least one mobile virtual fence to select a mobile device belonging to the connected vehicle group capable of delivering messages in a multi-hop manner by the mobile device capable of smoothly inter-vehicle communication It is to provide a connected car service support method.

A method of supporting a connected car service using a mobile device according to the present invention for achieving the above object includes the steps of: collecting location information by a mobile device of a client using a GPS signal; Generating, by the mobile device, a mobile virtual fence that independently applies to the client based on the collected location information; Changing, by the mobile device, the coverage of the generated mobile virtual fence according to a moving speed; Selecting, by the management server receiving the information from the mobile device, another client in the connectivity group that overlaps with the changed mobile virtual fence and has the same connectivity in the same direction; And transmitting, by the management server, location information and identification information of another client belonging to the connectivity group to the mobile device of the client belonging to the connectivity group through the communication base station.

The changing of the mobile virtual fence may include changing a radius of the mobile virtual fence in proportion to the speed detected by the mobile device of the client.

The mobile device may set a radius of the mobile virtual fence using Equation 1 based on the detected speed.

(식 1)

(Equation 1)

Base is the default value of the radius (R), and x is the weight applied when the vehicle speed (S) exceeds 10Km / h.

According to the present invention as described above can be adjusted in a way to expand or reduce the coverage of the mobile virtual fence according to the vehicle speed that changes according to the road traffic volume to prevent excessive communication traffic caused by data congestion and emergency messages from the vehicle connected to the mobile virtual fence Can be reliably received.

In addition, since the present invention configures an inter-vehicle communication environment using a vehicle occupant's mobile device, even in an existing vehicle, the connected car service can be provided at low cost, thereby reducing the economic burden.

1 is a diagram illustrating the use of a connected car service system according to an embodiment of the present invention.
2 is a block diagram of a connected car service system composed of a server and a client according to an embodiment of the present invention.
3 is a block diagram of a smartphone applied to the mobile device of FIG.
4 is a block diagram of the control module of FIG.
5 is a view for explaining the setting operation of the mobile virtual fence (MVF) for the vehicle according to the present invention.
6 is a block diagram of the management server of FIG.
7 is a view illustrating a connectivity group in which mobile virtual fences set in two vehicles according to the present invention overlap to form a fence network.
8 is a diagram illustrating a case where mobile virtual fences corresponding to a pair of vehicles belonging to a connectivity group according to the present invention overlap.
9 is a diagram illustrating a case where mobile virtual fences corresponding to three vehicles belonging to a connectivity group according to the present invention overlap.
FIG. 10 is a view illustrating a case where two mobile virtual fences corresponding to two vehicles and one pedestrian belonging to the connectivity group according to the present invention overlap.
11 is a flowchart illustrating a method of supporting a connected car service according to the present invention.

Hereinafter, the present invention will be described by explaining embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

The present invention provides a connected car service system in which a connected car service environment is implemented using a mobile device of a vehicle occupant without attaching an additional device to an existing vehicle. In addition, the connected car service system according to the present invention may be composed of a server and a client. The server plays the role of ITS (Intelligent Transportation System), and as a client, the mobile device plays the role of vehicle, roadside relay (RSU), or pedestrian. Here, the mobile device itself becomes an independent Mobile Virtual Fence (MVF), and the Mobile Virtual Fence (MVF) can maintain a speed responsive radius and support context aware computing in its coverage. Therefore, vehicles loaded with mobile devices are connected to each other when the mobile virtual fences (MVFs) of each vehicle are connected by mutual recognition (V2V communication), and the mobile devices are mounted on the vehicle and the RSU. When connected via MVF, vehicle-infrastructure communication (V2I communication) is performed, and vehicle-pedestrian communication (V2P communication) may be performed between a vehicle and a pedestrian by a mobile virtual fence (MVF). Furthermore, the connected mobile virtual fence (MVF) system proposed in the present invention can support V2X communication as a base technology for future connected car technology.

1 and 2, the connected car service system according to the present invention is a usage environment that can wirelessly communicate between the mobile device 100 and the communication base station 200 is carried by the occupants of vehicles traveling along the lanes Applicable to Each mobile device 100 corresponding to the plurality of vehicles may transmit information to the management server 300 via the communication base station 200.

The mobile device 100 is a generic term for a portable device, and includes a cellular phone, a smartphone, a notebook computer, a tablet PC, having a communication function for communicating with the management server 300 via a communication base station 200 connected to a mobile communication network, Personal digital assistants, media players, navigation devices, wearable electronic devices, and the like.

In the embodiment, the mobile device 100 assumes a smartphone, and a detailed configuration of such a smartphone is illustrated in FIG. 3. The mobile device 100 may include a control module 110, a GPS module 120, a sensor module 130, a touch panel 140, a Wi-Fi module 150, a base station communication module 160, a short range communication module 170, The memory 180 may be configured to be included.

The GPS module 120 receives a GPS signal. The sensor module 130 may include a geomagnetic sensor for detecting the orientation of the driving vehicle and an acceleration sensor for detecting the vehicle speed, and the type of the sensor is not limited thereto and may further include various functional sensors.

The memory 180 stores various application programs applied to the smartphone, and for example, may activate an application program under the control of the control module 110 to perform an additional function of providing traffic information to the navigation function.

Referring to FIG. 4, the control module 110 includes a map viewer 111, a position detector 112, a speed detector 113, a fence radius calculator 114, a movement path recorder 115, and a network handler 116. ) Can be configured to include

The location sensor 112 detects latitude and longitude on the map from the satellite GPS signal received by the GPS module 120.

The map viewer 111 displays a client location on a map, for example, and displays a vehicle location detected by the location sensor 112. Since the position of the mobile device 100 changes as the vehicle moves, the position information of the mobile device 100 may replace the vehicle position. For example, since the technology of detecting the geographic position by the mobile device 100 using the GPS signal is implemented, it is possible to determine the geographic position of the vehicle based on the GPS signal.

The movement route recording unit 115 analyzes the movement route of the vehicle and records the movement route in the memory 180.

The network handler 116 controls overall operations for the mobile device 100 to wirelessly communicate through the Wi-Fi module 150, the base station communication module 160, and the short-range communication module 170. The mobile device 100 May communicate wirelessly with the mobile device of another vehicle via the Wi-Fi module 150, may also communicate with the communication base station 200 through the base station communication module 160, and may also communicate with the vehicle through the near field communication module 170. It is possible to perform near field communication with the OBD mounted on the driving record. The short range communication method may include Bluetooth, low power Bluetooth, beacon, NFC, and the like. The driving record self-diagnosis device (OBD) is a device that automatically stores information on the current state, such as whether the vehicle has a failure, the amount of exhaust gas, location. Accordingly, the mobile device 100 may transmit the information received from the driving record diagnostic device (OBD) to the mobile device of another vehicle.

The speed detector 113 detects a vehicle speed by using sensor information detected by the sensor module 130.

As illustrated in FIG. 5, the fence radius calculator 114 calculates the radius R of the mobile virtual fence according to the vehicle speed S detected by the speed detector 113. The coverage of the mobile virtual fence is determined according to the size of the radius R, and the coverage may be enlarged or reduced by adjusting the radius.

In the embodiment, the radius R of the mobile virtual fence MVF is calculated according to the vehicle speed S according to (Equation 1).

(식 1)

(Equation 1)

Where Base is the default radius (R). x is a weight applied when the vehicle speed S exceeds 10 km / h. Base can be set in consideration of braking distance in emergency situation. 10m corresponds to the length of three ordinary cars. In the embodiment, the base is set to 10 m and x is set to 0.5, and the radius R is increased by 0.5 m each time the vehicle speed S is increased by 1 Km / h. For example, if the radius (R) of the mobile virtual fence (MVF) for any vehicle A is 55m, the vehicle A is traveling at high speed of 100 km / h, and this vehicle A and the other vehicle B connected to the mobile virtual fence are also the same. If you are driving at speed, the distance between the two cars A and B is up to 110m. For reference, although it varies from country to country, in normal weather conditions, Korea sets a distance of 100m between two vehicles running at 100km / h on the highway. In addition, Base and x should be changed to proper values considering the distance of sudden stop in bad weather such as snow, rain, and foggy weather.

The control module 110 may control the overall operation of the mobile device 100 using an operating program stored in the memory 180. The control module 110 may process a given function according to a user command through the touch panel 140 as a user interface. The touch panel 140 integrates an input function and a display function, and may process a user command through a touch input such as an icon image displayed on a screen.

Referring to FIG. 6, the management server 300 may be connected to the communication base station 200 through a network and communicate with the mobile device 100 via the communication base station 200.

The management server 300 may include an interface module 310, a situation recognition module 320, a log and path storage unit 330, and a network manager 340.

The interface module 310 receives a reception interface 311 that transmits data received from the mobile device 100 corresponding to the client, and information about vehicles connected from the situation recognition module 320 to receive a mobile corresponding to the client. A transmission interface 312 that transmits to the device 100.

The situation recognition module 320 may include a message distribution unit 321, a recognition manager 322, and a fence manager 323. The message distributor 321 sequentially disassembles a message set received from each mobile device 100 corresponding to the client into an array and transmits the message set to the recognition manager 322. The recognition manager 322 uses the array elements received from the message distribution unit 321 to configure the device information connected through the connection recognition algorithm. The fence manager 323 receives the connection information of the mobile virtual fence corresponding to the client processed by the recognition manager 322 and converts the connection information into data for transmission to the mobile device corresponding to the client.

The log and path storage unit 330 stores log data of the mobile device corresponding to the client and movement path data of the mobile device (vehicle).

The network service manager 340 configures a server environment and manages a multi-hop network using a mobile device of a client, for example, a vehicle occupant, having connectivity. Herein, the mobile device of the vehicle occupant having connectivity refers to a connectivity group connected to at least one mobile virtual fence to form a fence network. As shown in FIG. 7, when two vehicles travel in the same direction and a mobile virtual fence having the same size is set in each vehicle, the mobile virtual fence MVF1 corresponding to the vehicle A and the mobile virtual corresponding to the vehicle B are shown. When the fence (MVF2) overlaps, it is recognized as being a connectivity group capable of mutual communication using a mobile device.

As another example, in FIG. 8, [Case1] is a connection group formed by a pair of vehicles driving on the road in the same direction. The mobile virtual fence MVF3 of vehicle C and the mobile virtual fence MVF4 of vehicle D are shown in FIG. Some overlap will form a fence network. In this case, the trailing vehicle C moves faster than the preceding vehicle D. The radius of the mobile virtual fence MVF3 is larger than the mobile virtual fence MVF4, and thus the coverage of the mobile virtual fence MVF3 is greater than that of the mobile virtual fence MVF4. It becomes wider.

[Case2] is a connection group formed by a pair of vehicles driving on the road in the same direction. The mobile virtual fence (MVF5) of vehicle E and the mobile virtual fence (MVF6) of vehicle F are partially overlapped to form a fence network. Done. In this case, the trailing vehicle E moves slower than the preceding vehicle F. The radius of the mobile virtual fence MVF5 is smaller than the mobile virtual fence MVF6, and thus the coverage of the mobile virtual fence MVF5 is mobile virtual fence MVF6. Narrower than

As another example, in FIG. 9, [Case3] is a connectivity group composed of three vehicles traveling on the road in the same direction, and the mobile virtual fences MVF3 (MVF4) and MVF5 of the vehicles C, D and E are partially. Overlapping will form a fence network. At this time, the center vehicle C moves slower than the trailing vehicle D and the preceding vehicle E. The radius of the mobile virtual fence MVF3 is smaller than the mobile virtual fence MVF4 and the coverage of the mobile virtual fence MVF3. Is narrower than the mobile virtual fence (MVF4) (MVF5).

As another example, in FIG. 10, [Case4] is a pair of vehicles and a pedestrian connected by a pair of vehicles traveling in the same direction. The mobile virtual fence MVF4 (MVF5) and the pedestrians of vehicles D and E are shown. The mobile virtual fence of MVF7 is partially overlapped to form a fence network. At this time, the pedestrian is moving slower than a pair of vehicles D and E. The radius of the mobile virtual fence MVF7 is smaller than the mobile virtual fence MVF4 and the coverage of the mobile virtual fence MVF7. It is narrower than the mobile virtual fence (MVF4) (MVF5).

In the mobile virtual fence, the mobile virtual fence is moved according to the movement of the vehicle or the pedestrian, rather than the geographical position being fixed. As illustrated, the mobile virtual fence is set to a circular virtual area having a predetermined radius from the center of the vehicle or the pedestrian. Can be. In an embodiment the fence center is defined by the geographic location coordinates collected by the mobile device 100.

Based on the information transmitted from the mobile device 100 corresponding to the driving vehicle and the pedestrian, the management server 300 may recognize a connection situation of the mobile virtual fence corresponding to each mobile device 100.

The communication module 320 of the management server 300 may communicate with the mobile device 100 via the communication base station 200, and fence radius data, position data, orientation data, and acceleration data from the mobile device 100. Receive the transmission.

The management server 300 selects a target for communication between the vehicles from the surrounding vehicles. This is to solve the problem that excessive communication traffic is generated when in-vehicle communication is made indiscriminately from surrounding vehicles. That is, since the traveling directions and the vehicle distances of the vehicles driving on the roads are different, it is necessary to appropriately select a target for communication between the vehicles. For example, when the sizes of the mobile virtual fences set for each vehicle are the same, the mobile virtual fences of two vehicles having a close distance may be overlapped, and when the mobile virtual fences overlap, the connectivity between the two vehicles may be defined.

Even in a situation where the distances of the vehicles are narrowed, the information obtained from the vehicle traveling to the other side is not useful and may increase communication traffic. This is because the traffic information obtained through the inter-vehicle communication is very high only when the traveling directions are the same among the vehicles in the connectivity group and the mobile virtual fences set for each vehicle overlap.

The recognition manager 322 of the management server 300 determines whether the driving direction of the vehicle is the same according to the direction recognition algorithm.

According to the direction recognition algorithm according to the embodiment, it is assumed that a latitude and longitude value of the vehicle is used, and the connection may be possible when the distance between the vehicles is 140 m or less. The reason is that when the distance between vehicles is 140m, the values of latitude and longitude only change below the third decimal place. Therefore, if you multiply the latitude and longitude values by 1000 and discard the number after the decimal point, you will have the same value if you are in the relevant position. For example, if the latitude of the first vehicle is 127.99999 and the latitude of the second vehicle is 128.00000, multiply by 1000 and discard the number afterwards, so it is calculated as 127999 and 128000. Because of this, it is determined that the location is not related. Therefore, when the difference between the calculated value of the first vehicle and the second vehicle is less than one, it is determined that the vehicle in the related position. Therefore, when the difference between the calculated value of the first vehicle and the second vehicle is less than one, it is determined that the vehicle is in a related position. When it is determined that the vehicle is in the related location, the vehicle has the same value by comparing the bearing information included in the message received from the vehicle of the related location (actually, the vehicle occupant's mobile device). A direction recognition algorithm is executed to determine the vehicle at the related position centered on the first and last vehicles in the list by sorting the latitude and longitude values of the vehicles in the list.

Direction recognition algorithm

Premise: If the latitude and longitude values from the mobile device are the same as the third decimal point, the geographical location error range is less than 140 meters.

-Mobile virtual fence applied vehicle: MVF

-Position value of MVF: RMVF

step 1)

Create a list of RMVFs for the latitude and longitude of the MVF as follows:

RMVF = absolute value (fall (latitude _MVF1 * 1000) AND down (longitude _MVF1 * 1000) _-down (latitude _MVF2 * 1000) AND down (longitude _MVF2 * 1000)) ≤ 1

step 2)

Repeat the process of creating an RMVF list until no vehicles are associated, compare each vehicle's direction angle in the RMVF list, sort by latitude and longitude values if the vehicle's direction angle is the same, and first and last vehicle in the sorted list. Recalculate RMVF for.

Meanwhile, the connection recognition algorithm, which will be described later, is performed on a list of the vehicles traveling in the same direction. That is, the recognition manager 322 calculates the RMVF for the vehicles according to the direction recognition algorithm, and then selects the vehicles having the same travel direction, and then determines the connection recognition algorithm. To perform.

Connection recognition algorithm

step 1)

If the RMVF list is not generated because there is no result of [Direction Recognition Algorithm], it is determined that there is no object to communicate between vehicles.

step 2)

Connectivity is determined by comparing the sum and distance of the radius of two vehicles

-Radius of each vehicle (MVF _{1 ~ n} ) with the same traveling direction: R _{1 ~ n}

Distance between two vehicles (MVF _n , MVF _{n + 1} ) with the same direction of travel: D (n, n + 1)

-If (R _n + R _{n + 1} )> distance D (n, n + 1)

Above Direction Recognition Algorithm] In accordance with the same two vehicles traveling direction _{(MVF n, MVF n + 1} ) the radius sum _{(R n + R n + 1} ) is the same both vehicles traveling direction of (MVF _n, the MVF _{n + If} the distance D (n, n + 1) is greater than 1), the mobile virtual fences of the two vehicles overlap and have connectivity.

The management server 300 transmits the location information and the vehicle identification information of the vehicle to the mobile device 100 of the selected vehicles through the communication module 320 so that communication between the vehicles can be made. Accordingly, inter-vehicle communication may be smoothly performed using the mobile device 100 carried by the passenger vehicle and the occupant of another vehicle.

Hereinafter, a method of supporting a connected car service using a mobile device according to the present invention will be described.

The connected car service applied to the present invention may be composed of a server and a client. The server plays the role of ITS (Intelligent Transportation System), and as a client, the mobile device plays the role of vehicle, roadside relay (RSU), or pedestrian. Here, the mobile device itself becomes an independent Mobile Virtual Fence (MVF), and the Mobile Virtual Fence (MVF) can maintain a speed responsive radius and support context aware computing in its coverage.

Referring to FIG. 11, the mobile device 100 as a client detects the latitude and longitude on the map from the satellite GPS signal received by the GPS module 120 by the location sensor 112 (S10). In addition, the speed detecting unit 113 of the mobile device 100 detects the moving speed of the client, that is, the vehicle, using the sensor information detected by the sensor module 130 (S11).

Then, the fence radius calculator 114 of the mobile device 100 calculates the radius R of the mobile virtual fence according to the vehicle speed S detected by the speed detector 113. For example, as illustrated in FIG. 5, the coverage of the mobile virtual fence is determined according to the size of the radius R, and the coverage may be enlarged or reduced by adjusting the radius.

In the embodiment, the radius R of the mobile virtual fence MVF is calculated according to the vehicle speed S according to (Equation 1).

(식 1)

(Equation 1)

Where Base is the default radius (R). x is a weight applied when the vehicle speed S exceeds 10 km / h. In the embodiment, the base is set to 10 m and x is set to 0.5, and the radius R is increased by 0.5 m each time the vehicle speed S is increased by 1 Km / h.

The control module 110 of the mobile device 100 generates a mobile virtual fence (MVF) based on the calculated radius (S12). In the mobile virtual fence, the mobile virtual fence is moved according to the movement of the vehicle or the pedestrian, rather than the geographical position being fixed. As illustrated, the mobile virtual fence is set to a circular virtual area having a predetermined radius from the center of the vehicle or the pedestrian. Can be. In addition, the radius of the mobile virtual fence is variable in response to the speed change detected by the speed detector 113. In an embodiment the fence center is defined by the geographic location coordinates collected by the mobile device 100.

The management server 300 receives information from the mobile device 100 through the communication base station 200, the operation of receiving this information may be performed periodically.

The recognition manager 322 of the management server 300 recognizes the vehicle as a client proceeding in the same direction using the [direction recognition algorithm] based on the information received from each mobile device (S13).

In addition, the recognition manager 322 of the management server 300 is connected to at least one mobile virtual fence in the case of overlapping with the mobile virtual fence of another vehicle having the same travel direction according to [connection recognition algorithm] to form a fence network. The client belonging to the group is recognized (S14). Then, the management server 300 transmits the location information and identification information of the vehicle to the mobile device 100 of each vehicle having connectivity so that communication between vehicles can be made. Then, the mobile device 100 may be provided with a so-called connected car service that receives traffic information such as an emergency message according to an accident by communicating with another vehicle having the same direction and connecting with the vehicle (S15).

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art by using the basic concepts of the present invention defined in the claims below. It belongs to the scope of the present invention.

100: mobile device
200: communication base station
300: management server

Claims (3)

Collecting, by the vehicle occupant's mobile device, location information using a GPS signal;
Generating, by the mobile device (100), a mobile virtual fence (MVF) independently applied to the vehicle based on the collected location information;
When the control module 110 of the mobile device 100 includes a fence radius calculator 114, and the fence radius calculator 114 has a vehicle speed S of 10 km / h or less, the mobile virtual device is set to a default value. Set the radius of the fence (R), and if the vehicle speed exceeds 10 km / h, add the base value and the vehicle speed (S), and then multiply the weight (x) ((Base + S) * x Changing the coverage of the mobile virtual fence (MVF) generated by setting the radius (R) of the mobile virtual fence;
The recognition manager 322 of the management server 300 multiplies the values of latitude and longitude by 1000, respectively, as vehicle location information of the first vehicle and the second vehicle received from the mobile device 100, and discards the numbers after the decimal point. When the difference between the calculated values of the first and second vehicles is less than or equal to 1, it is determined that the vehicle is in a related position, and the bearing information included in the message received from the mobile device corresponding to the first and second vehicles in the related position is the same value. If the vehicle has the same heading, sort the vehicle according to the latitude and longitude of the vehicles in the list, and select the vehicle with the same heading direction. As the mobile virtual fence overlaps, it is recognized as a vehicle belonging to a connectivity group that is connected to at least one mobile virtual fence to form a fence network. Transmitting location information and identification information of the vehicle to the mobile device 100 of each vehicle having connectivity;
The mobile device 100 proceeds in the same direction and communicates with other vehicles having connectivity to receive traffic situation information on an emergency message according to an accident occurrence; connected car using a mobile device, comprising: How to service.

delete delete

Images