KR20200080786A - Multi-channel communication apparatus and method of connected car - Google Patents

Abstract

Provided are a multi-channel communication device of a connected car which allows a user to select an optical communication channel in accordance with a surrounding environment and a communication environment of a connected car equipped with various communication interfaces, and a method thereof. The provided device comprises: an information collection unit collecting information inside the vehicle and outside the vehicle; an information analysis unit analyzing the information inside the vehicle and the information outside the vehicle collected in the information collection unit; a communication channel analysis unit analyzing results analyzed by the information analysis unit through which communication channel is most suitable to communicate with the outside among a plurality of different communication channels; and a communication channel selection unit selecting a communication channel analyzed by the communication channel analysis unit as a communication channel having the most suitable communication performance.

Description

Multi-channel communication apparatus and method of connected car

The present invention relates to a multi-channel communication device and method for a connected car, and more specifically, a multi-connected car to select an optimal communication channel (communication path) in consideration of characteristics of various communication channels of the connected car. It relates to a channel communication device and method.

In a vehicle communication environment, a communication channel environment changes very dynamically due to low antenna installation height and high mobility, and thus it is difficult to provide a stable communication link.

Due to the limitation of the height of the vehicle body, the antenna installation is at a relatively low height, and as a result, the communication link is easily exposed to an obstacle, adversely affecting reception performance.

In addition, because the vehicle moves at a high speed, it is necessary to take into account the damage to the radio signal caused by this and be designed to compensate.

In the case of an emergency message transmission in the vehicle communication service, it may be directly connected to the safety of the occupant, so the delay time must be minimized and the certainty of information transmission must be guaranteed.

In a traffic-dense environment, a vehicle communication channel may be saturated, so a method to prevent such a problem must be prepared in advance. It is difficult to cope with various variables that may occur in the driving environment by using only a single communication channel. Accordingly, a vehicle communication system should be designed to comprehensively utilize various communication networks.

Prior art 1: Republic of Korea Patent No. 10-0957137 (military driving control system and method) Prior Art 2: Republic of Korea Patent Publication No. 10-2018-0095223 (Method for providing IoT communication connection information in an autonomous vehicle) Prior Art 3: Korean Patent Registration No. 10-1909917 (Collective autonomous driving control method and device)

The present invention has been proposed to solve the above-described conventional problems, a multi-channel communication device of the connected car to select the optimal communication channel according to the surrounding environment and communication environment of the connected car equipped with a variety of communication interfaces and The purpose is to provide a method.

In order to achieve the above object, a multi-channel communication device for a connected car according to a preferred embodiment of the present invention includes: an information collection unit for collecting vehicle interior information and vehicle exterior information; An information analysis unit (own vehicle) and an information analysis unit (server) for analyzing the vehicle interior information and the vehicle exterior information collected in the information collection unit; A communication channel analysis unit analyzing which communication channel is most suitable for communicating the result analyzed by the information analysis unit among a plurality of different communication channels; And a communication channel selection unit for selecting a communication channel analyzed by the communication channel analysis unit as a communication channel having the best communication performance.

The information analysis unit analyzes factors that may affect the communication environment around the host vehicle based on analysis results from a server that collects and analyzes information collected from all connected cars and information collected by the information collection unit. Can.

The inside information of the vehicle is information obtained through a plurality of sensors mounted on the host vehicle, and the outside information of the vehicle may include communication data from other connected vehicles and location information from satellites.

The plurality of sensors may include a plurality of radar sensors, lidar sensors, vision sensors, vehicle speed sensors, steering sensors, and ultrasonic sensors.

The information analysis unit (own vehicle) and the information analysis unit (server) may analyze the inside vehicle information and the outside vehicle information collected by the information collection unit using a machine learning algorithm.

On the other hand, the multi-channel communication method of a connected car according to a preferred embodiment of the present invention, the information collecting unit, collecting the vehicle interior information and the vehicle exterior information; An information analysis unit (own vehicle) and an information analysis unit (server) analyzing the collected vehicle interior information and vehicle exterior information; The communication channel analysis unit analyzes, through which communication channel it is most suitable to communicate with the outside among a plurality of different communication channels for the analyzed result; And a communication channel selection unit selecting a communication channel analyzed as a communication channel having the best communication performance.

According to the present invention having such a configuration, various information such as obstacles, weather, terrain, driver characteristics, etc., which may occur in a road driving environment are collected and analyzed, and various communication channels of a connected car (eg, LTE, WAVE/DSRC, LiFi, Considering the characteristics of WiFi, satellite communication, etc.), it is possible to select the optimal communication path and process data.

In other words, in a connected car, multiple wireless communication channels can be selected according to the characteristics of the country, local environment (main transit mirror), service, driver, etc., so various communication interfaces can be simultaneously installed to provide the environment and service. It can communicate intelligently according to the requirements.

1 is a block diagram of a system employing a multi-channel communication device for a connected car according to an embodiment of the present invention.
2 is a flowchart illustrating a multi-channel communication method of a connected car according to an embodiment of the present invention.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the overall understanding in describing the present invention, the same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted.

1 is a block diagram of a system employing a multi-channel communication device for a connected car according to an embodiment of the present invention.

The system of FIG. 1 includes an information collection unit 10, an own vehicle information analysis unit 20, a server information analysis unit 21, a communication channel analysis unit 30, and a communication channel selection unit 40. Here, the multi-channel communication device of the connected car according to an embodiment of the present invention, the information collecting unit 10, the information analysis unit 20 of the host vehicle, the communication channel analysis unit 30, and the communication channel selection unit 40 ).

The information collecting unit 10 may collect data by time synchronization by various sensors (eg, radar sensor, lidar sensor, vision sensor, vehicle speed sensor, steering sensor, ultrasonic sensor, etc.) mounted on the connected car.

For example, the information collecting unit 10 may collect the interfering vehicle information and the lane information around the host vehicle (connected car) using the vision sensor and the lidar sensor, and the host vehicle using the vision sensor and the lidar sensor (Connected Car) It is possible to collect information on communication obstacles including roadside trees, signs, and road installation structures, and it is possible to collect pedestrian information around a host vehicle (connected car) using a vision sensor and a lidar sensor.

In addition, the information collecting unit 10 may collect information related to a driver's driving characteristics through a vehicle speed sensor and a steering sensor.

In addition, the information collecting unit 10 may collect weather information (eg, temperature, humidity, rainfall/snowfall, rainfall, wind speed, wind direction) of the host vehicle through a connection with the Internet.

As described above, information (data) obtained through various sensors mounted on the connected car may be referred to as vehicle interior information.

Also, the information collection unit 10 may collect communication data (eg, traffic information, weather information, etc.) from communication devices of other connected cars.

In addition, the information collecting unit 10 is equipped with a GPS sensor (not shown) to collect the location information of the host vehicle (ie, the connected car) from the satellite and the location information of the other vehicle (ie, other connected cars) in real time. can do.

In this way, communication data from other connected car communication devices and position information from satellites can be referred to as vehicle exterior information.

On the other hand, it can be seen that the information collecting unit 10 includes a data distribution collecting unit (not shown) and a data storage unit (not shown). For example, the data distribution collection unit may collect and collect data based on an open-source based distributed aggregator such as Flume, Fluentd, and Scribe. The data storage unit stores data collected and distributed by the data distribution collection unit, but may store data through a distributed parallel index.

The information analysis unit 20 of the host vehicle and the information analysis unit 21 of the server analyze the information collected by the information collection unit 10 by applying a machine learning algorithm set.

For example, the information analysis unit 21 of the server may process data collected by the information collection unit 10 of all connected cars in the form of parallel distributed processing based on Spark-based high-speed in-memory-based big data. That is, the server (not shown) is installed outside the host vehicle, and can collect and analyze data collected by the information collection unit 10 of all connected cars.

The information analysis unit 20 of the host vehicle may extract an object movement trajectory and distribution around the host vehicle or analyze characteristics of objects within a predetermined radius of the host vehicle.

In other words, the information analysis unit 20 of the host vehicle is based on the analysis result of the information analysis unit 21 of the server, real-time driving situation, surrounding situation (environment; road condition, weather) for the information collected by the information collection unit 10 , Traffic, etc.). Eventually, the information analysis unit 20 of the host vehicle affects the communication environment around the host vehicle based on the analysis result from the server that collects and analyzes the information collected from all connected cars and the information collected by the information collection unit 10. Can analyze factors that can give

Accordingly, the information analysis unit described in the claims of the present invention may be referred to as the information analysis unit 20 of the host vehicle.

Then, the information analysis unit 20 of the host vehicle may analyze the data collected by the information collection unit 10 and output an emergency message indicating that an emergency situation has occurred.

The communication channel analysis unit 30 may analyze which communication channel is most suitable for sending the results analyzed by the host's information analysis unit 20 to the outside among a plurality of different communication channels.

In addition, if the information analysis unit 20 of the host vehicle and the information analysis unit 21 of the server have analyzed factors that may affect the communication environment around the host vehicle, the communication channel analysis unit 30 determines the communication channel quality of the host vehicle ( For example, an analysis on radio channel loss rate, radio channel signal strength, radio channel noise) is performed. The server's information analysis unit 21 can perform a higher dimensional or broader analysis than the host's information analysis unit 20.

Here, the plurality of communication channels may be a WAVE/DSRC channel, a mobile communication channel, a Wi-Fi channel, an LTE channel, a LoRa channel, a satellite communication channel, and the like.

Accordingly, the communication channel analysis unit 30 is based on the location information (that is, the location information of the host vehicle and the other vehicle) and the surrounding environment of the host vehicle, communication quality such as transmission rate, error rate, jitter, delay, service type, etc. of each communication channel. (Performance) can be comparatively analyzed.

It is very important to compare and analyze the quality (performance) of communication channels in an inter-vehicle communication environment in which mobility and surrounding conditions are dynamically changed. That is, location information (that is, location information of the host vehicle and the other vehicle) and the surrounding environment affect communication performance. Therefore, the communication channel analysis unit 30 is the communication channel that can be made to communicate with other cars and transmit/receive data most easily (that is, has the best communication performance) based on the current location and surrounding environment of the host vehicle. You can compare and analyze which channel.

The periphery (environment) of the existing connected car is intended to generate a vehicle route, but in the present invention, it can be considered that it is intended to derive an object and an environment influencing in terms of V2X communication transmission. In addition, although the existing technologies have implemented autonomous driving using only the autonomous driving sensor and in-vehicle data, in the present invention, communication data (traffic information, weather information) received from an intelligent communication device between autonomous vehicles is additionally analyzed. Utilize.

The communication channel selector 40 includes various vehicle communication interfaces such as WAVE/DSRC, mobile communication interfaces such as 3G/4G, Wi-Fi communication interfaces, LTE communication interfaces, LoRa communication interfaces, satellite communication interfaces, and the like. It can be said that it is equipped with a communication interface.

The communication channel selection unit 40 selects the communication channel (communication interface) analyzed by the communication channel analysis unit 30 as the communication channel having the best communication performance (quality) (ie, the most suitable).

When a communication channel is selected by the communication channel selector 40 as described above, communication with another vehicle may be performed through the selected communication channel.

2 is a flowchart illustrating a multi-channel communication method of a connected car according to an embodiment of the present invention.

First, the information collection unit 10 collects vehicle interior information and vehicle exterior information (S10). In other words, the information collecting unit 10 collects the information of the obstacle vehicles around the host vehicle (connected car), the lane information, the pedestrian information, the driving characteristic information, etc. through various sensors mounted on the connected car. Communication data (for example, traffic information, weather information, etc.) from the communication device, location information of the host vehicle from the satellite, location information of the other vehicle, and the like are collected.

Subsequently, the information analysis unit 20 analyzes by applying a machine learning algorithm set to the vehicle interior information and the vehicle exterior information collected by the information collection unit 10 (S20 ).

Then, the communication channel analysis unit 30 analyzes which communication channel is most suitable for sending the results analyzed by the information analysis unit 20 to the outside among a plurality of different communication channels. In addition, the communication channel analysis unit 30 analyzes which communication channel is most suitable for receiving vehicle external information from among different communication channels (S30 ). It is very important to compare and analyze the quality (performance) of communication channels in an inter-vehicle communication environment in which mobility and surrounding conditions are dynamically changed. In other words, location information (that is, location information of the host vehicle and the other vehicle) and the surrounding environment affect communication performance. Accordingly, the communication channel analysis unit 30 is the communication channel that can perform communication with other cars and transmit/receive data most easily (that is, has the best communication performance) based on the current location and surrounding environment of the host vehicle. This channel is compared and analyzed.

Thereafter, the communication channel selection unit 40 selects a communication channel (communication interface) analyzed by the communication channel analysis unit 30 as the communication channel having the best communication performance (S40). The communication channel selector 40 includes various vehicle communication interfaces such as WAVE/DSRC, mobile communication interfaces such as 3G/4G, Wi-Fi communication interfaces, LTE communication interfaces, LoRa communication interfaces, satellite communication interfaces, and the like. Since it is equipped with a communication interface, it is possible to select any one communication channel from various communication channels.

When a communication channel is selected by the communication channel selector 40 as described above, communication with another vehicle is performed through the selected communication channel.

In addition, the multi-channel communication method of the connected car according to the present invention described above can be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all types of recording devices in which data readable by a computer system are stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, and optical data storage devices. In addition, the computer-readable recording medium can be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. And, functional programs, codes, and code segments for implementing the method can be easily inferred by programmers in the technical field to which the present invention pertains.

As described above, optimal embodiments have been disclosed in the drawings and specifications. Although specific terms are used herein, they are only used for the purpose of describing the present invention and are not used to limit the scope of the present invention described in the meaning limitation or the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

10: information collection unit 20: own vehicle information analysis unit
21: server information analysis unit 30: communication channel analysis unit
40: communication channel selector

Claims (8)

An information collecting unit that collects inside vehicle information and outside vehicle information;
An information analysis unit that analyzes inside and outside vehicle information collected in the information collection unit;
A communication channel analysis unit analyzing which communication channel is most suitable for communicating the result analyzed by the information analysis unit among a plurality of different communication channels; And
And a communication channel selecting unit for selecting a communication channel analyzed by the communication channel analysis unit as a communication channel having the best communication performance. The method according to claim 1,
The information analysis unit,
Based on the analysis results from the server that collects and analyzes the information collected from all connected cars and the information collected by the information collection unit, it is characterized by analyzing the factors that can affect the communication environment around the host vehicle. Tidka's multi-channel communication device. The method according to claim 1,
The vehicle interior information is information obtained through a plurality of sensors mounted on the host vehicle,
The vehicle exterior information includes communication data from other connected cars and location information from satellites,
The plurality of sensors is a radar sensor, a lidar sensor, a vision sensor, a vehicle speed sensor, a steering sensor, and a multi-channel communication device of a connected car, characterized in that it comprises a plurality of ultrasonic sensors. The method according to claim 1,
The information analysis unit,
Connected car multi-channel communication device characterized in that the analysis of the vehicle information inside the vehicle and the vehicle information collected in the information collection unit. The information collection unit, collecting the vehicle interior information and the vehicle exterior information;
An information analysis unit, analyzing the collected vehicle interior information and vehicle exterior information;
The communication channel analysis unit analyzes, through which communication channel it is most suitable to communicate with the outside among a plurality of different communication channels for the analyzed result; And
And a communication channel selecting unit selecting a communication channel analyzed as a communication channel having the best communication performance. The method according to claim 5,
The step of analyzing the collected vehicle interior information and vehicle exterior information may include:
Based on the analysis result from the server that collects and analyzes the information collected from all connected cars and the information collected in the collecting step, it analyzes the factors that can affect the communication environment around the host vehicle. Tidka's multi-channel communication method. The method according to claim 5,
The vehicle interior information is information obtained through a plurality of sensors mounted on the host vehicle,
The vehicle exterior information includes communication data from other connected cars and location information from satellites,
The plurality of sensors is a radar sensor, a lidar sensor, a vision sensor, a vehicle speed sensor, a steering sensor, and a multi-channel communication method of a connected car, characterized in that it comprises a plurality of ultrasonic sensors. The method according to claim 5,
The step of analyzing the collected vehicle interior information and vehicle exterior information may include:
A multi-channel communication method for a connected car, characterized in that the collected vehicle interior information and vehicle exterior information are analyzed by a machine learning algorithm.

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