KR101828400B1 - Portable v2x terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a portable V2X terminal for performing V2X communication, which comprises: a wireless communication unit for providing a V2X (Vehicle to Everything) communication interface; And when the measured remaining power amount is equal to or less than the first power threshold value, switches the operation mode of the portable V2X terminal from the normal mode to the power saving mode, and in the power saving mode, And a controller for transmitting only the V2X message to the external device.

Description

TECHNICAL FIELD [0001] The present invention relates to a portable V2X terminal and a method of operating the same,

The present invention relates to a portable V2X terminal and an operation method thereof, and more particularly, to a method of transmitting a message for power management of a portable V2X terminal in a V2X communication system.

A terminal can be divided into a mobile / portable terminal and a stationary terminal depending on whether the terminal is movable or not. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

A vehicle is a device that moves a user in a desired direction by a boarding user. Typically, automobiles are examples. In recent years, interest in smart cars has been growing as an attempt to provide entertainment experience and reduce the risk of accidents even in vehicles. Therefore, in order to construct Intelligent Tansport System (ITS) in major countries, all vehicles are targeted for Vehicle-to-Vehicle (V2V), Vehicle-to-Infra, V2I) and V2X (Vehicle-to-Nothing Devices) communication to reduce the traffic accident rate and to minimize the social cost caused by traffic accidents. .

In this way, the V2X communication system that combines next-generation automobile technology and information communication technology is composed of a V2X server connected to the Internet network, a V2X base station installed around the road, a V2X terminal installed in a vehicle, and a portable V2X terminal possessed by a driver or a pedestrian . The devices constituting the V2X communication system exchange messages with each other through various communication methods such as V2V communication, V2I communication, and V2N communication.

However, in the V2X communication system, since the V2X server, the V2X base station, and the V2X terminal installed in the vehicle can receive power at all times, there is no problem in limiting the operation according to the power state. On the other hand, the portable V2X terminal of the driver or the pedestrian has a problem that the operation is limited depending on the state of the battery. Accordingly, there is an urgent need for a method for efficiently managing the power consumption of such a portable V2X terminal.

The present invention is directed to solving the above-mentioned problems and other problems. Another object of the present invention is to provide a portable V2X terminal capable of selectively transmitting only a V2X message having a priority processing message type when the battery remaining amount is less than or equal to a predetermined threshold value, and an operation method thereof.

According to an aspect of the present invention, there is provided a wireless communication unit for providing a V2X (Vehicle to Everything) communication interface. And when the measured remaining power amount is equal to or less than the first power threshold value, switches the operation mode of the portable V2X terminal from the normal mode to the power saving mode, and in the power saving mode, And a controller for transmitting only the V2X message to the external device.

According to another aspect of the present invention, Switching the operation mode of the portable V2X terminal from the normal mode to the power saving mode when the measured remaining power amount is less than or equal to the first power threshold value; And transmitting only a V2X message having a priority processing message type to an external device when a V2X message is generated in the power saving mode.

Effects of the portable V2X terminal and the control method thereof according to the present invention will be described as follows.

According to at least one embodiment of the present invention, power consumption of the portable V2X terminal can be minimized by transmitting only the V2X message having the priority processing message type when the battery remaining amount is less than or equal to the predetermined threshold value.

Meanwhile, various other effects will be directly or implicitly disclosed in the detailed description according to the embodiment of the present invention to be described later.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the appearance of a vehicle related to the present invention; FIG.
2 shows a cockpit module included in a vehicle related to the present invention;
3 is a block diagram illustrating a vehicle related to the present invention;
4A is a block diagram illustrating a portable V2X terminal related to the present invention;
FIGs. 4B and 4C are conceptual diagrams illustrating an example of a portable V2X terminal related to the present invention in different directions; FIG.
5 is a diagram of a V2X communication system according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating an operation of a portable V2X terminal according to an exemplary embodiment of the present invention; FIG.
7A and 7B are diagrams for explaining the structure of a WAVE Short Message Frame including a message type field;
8 is a diagram for explaining a message output method according to a power state of a portable V2X terminal;
9 is a flow chart illustrating the operation of a portable V2X terminal that processes a generic message in a predetermined mode in a power save mode.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The vehicle described herein may be a concept including a car, a motorcycle. Hereinafter, the vehicle will be described mainly with respect to the vehicle.

The vehicle described in the present specification may be a concept including both an internal combustion engine vehicle having an engine as a power source, a hybrid vehicle having an engine and an electric motor as a power source, and an electric vehicle having an electric motor as a power source.

Fig. 1 is a view showing the appearance of a vehicle related to the present invention, and Fig. 2 is a view showing a cockpit module included in a vehicle related to the present invention.

1 and 2, the vehicle 100 includes wheels 10FR, 10FL, 10RL, ..., which are rotated by a power source, steering input means 121a for adjusting the traveling direction of the vehicle 100, A camera 122a for capturing an image of the front of the vehicle, and various electric units provided in the vehicle 100. [

The vehicle 100 further includes a camera 122b for photographing an in-vehicle image, a first display unit 141 and a second display unit 141b for visually displaying various information, a portable V2X terminal 200, And an interface unit 170 electrically connected to the controller 300.

The interface unit 170 may include a mounting unit formed to mount the portable V2X terminal 200 and the wearable device 300 and a connection unit connected to the portable V2X terminal 200 and the wearable device 200 .

3 is a block diagram for explaining a vehicle related to the present invention.

3, the vehicle 100 includes a communication unit 110, an input unit 120, a sensing unit 130, an output unit 140, a vehicle driving unit 150, a memory 160, an interface unit 170, A control unit 180, and a power supply unit 190.

The communication unit 110 is provided between the vehicle 100 and the portable V2X terminal 200, between the vehicle 100 and the wearable device 300, between the vehicle 100 and the external server 410, And one or more modules that enable wireless communication with the mobile station 420. In addition, the communication unit 110 may include one or more modules that connect the vehicle 100 to one or more networks.

The communication unit 110 may include a broadcast receiving module 111, a wireless Internet module 112, a short range communication module 113, a location information module 114, and an optical communication module 115.

The broadcast receiving module 111 receives broadcast signals or broadcast-related information from an external broadcast management server through a broadcast channel. Here, the broadcast includes a radio broadcast or a TV broadcast.

The wireless Internet module 112 refers to a module for wireless Internet access, and may be built in or externally mounted in the vehicle 100. The wireless Internet module 112 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 112 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The short-range communication module 113 is for short-range communication and may be a Bluetooth ™, a Radio Frequency Identification (RFID), an Infrared Data Association (IrDA), a UWB (Ultra Wideband) It is possible to support near-field communication using at least one of Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct and Wireless USB (Universal Serial Bus)

The short-range communication module 113 may form short-range wireless communication networks to perform short-range communication between the vehicle 100 and at least one external device.

The position information module 114 is a module for obtaining the position of the vehicle 100, and a representative example thereof is a Global Positioning System (GPS) module. For example, a portable V2X terminal can acquire the position of a portable V2X terminal using a signal sent from a GPS satellite by utilizing a GPS module.

The optical communication module 115 may include a light emitting portion and a light receiving portion.

The light receiving section can convert the light signal into an electric signal and receive the information. The light receiving unit may include a photodiode (PD) for receiving light. Photodiodes can convert light into electrical signals. For example, the light receiving section can receive information of the front vehicle through light emitted from the light source included in the front vehicle.

The light emitting unit may include at least one light emitting element for converting an electric signal into an optical signal. Here, the light emitting element is preferably an LED (Light Emitting Diode). The optical transmitter converts the electrical signal into an optical signal and transmits it to the outside. For example, the optical transmitter can emit the optical signal to the outside through the blinking of the light emitting element corresponding to the predetermined frequency. According to an embodiment, the light emitting portion may include a plurality of light emitting element arrays. According to the embodiment, the light emitting portion can be integrated with the lamp provided in the vehicle 100. [ For example, the light emitting portion may be at least one of a headlight, a tail light, a brake light, a turn signal lamp, and a car light.

The input unit 120 may include a driving operation unit 121, a camera 122, a microphone 123, and a user input unit 124.

The driving operation means 121 receives a user input for driving the vehicle 100. The driving operation unit 121 may include a steering input unit 121a, a shift input unit (not shown), an acceleration input unit (not shown), and a brake input unit (not shown).

The steering input means 121a receives an input relating to the traveling direction of the vehicle 100 from the user. The steering input means 121a is preferably formed in a wheel shape so that steering input can be performed by rotation. According to the embodiment, the steering input means 121a may be formed of a touch screen, a touch pad, or a button.

The shift input means receives inputs relating to parking (P), forward (D), neutral (N), and reverse (R) of the vehicle 100 from the user. The shift input means is preferably formed in a lever shape. According to an embodiment, the shift input means may be formed of a touch screen, a touch pad or a button.

The acceleration input means receives an input for acceleration of the vehicle 100 from the user. The brake input means receives an input for decelerating the vehicle 100 from the user. The acceleration input means and the brake input means are preferably formed in the form of a pedal. According to the embodiment, the acceleration input means or the brake input means may be formed of a touch screen, a touch pad or a button.

On the other hand, when the vehicle according to the present invention is an autonomous driving vehicle, it does not require a separate user input through the driving operation means 121 because it travels to its destination by itself.

The camera 122 may include an image sensor and an image processing module. The camera 122 may process still images or moving images obtained by an image sensor (e.g., CMOS or CCD). The image processing module can process the still image or the moving image obtained through the image sensor, extract necessary information, and transmit the extracted information to the control unit 180. On the other hand, the vehicle 100 may include a first camera 122a for photographing an image in front of the vehicle and a second camera 122b for photographing an in-vehicle image.

The first camera 122a is constituted by a stereo camera, and can acquire a stereo image in front of the vehicle. At this time, the image processing module can provide the distance information with respect to the object detected on the stereo image through the binocular parallax information.

And the second camera 122b may acquire an image of the occupant. And the second camera 122b can acquire an image for biometrics of the passenger.

The microphone 123 can process an external acoustic signal into electrical data. The processed data can be utilized variously according to functions performed in the vehicle 100. The microphone 123 can convert the voice command of the user into electrical data. The converted electrical data may be transmitted to the control unit 180.

The camera 122 or the microphone 123 may be a component included in the sensing unit 130 and not a component included in the input unit 120. [

The user input unit 124 is for receiving information from a user. When the information is inputted through the user input unit 124, the control unit 180 can control the operation of the vehicle 100 to correspond to the input information. The user input unit 124 may include a touch input means or a mechanical input means. The user input unit 124 may be disposed in the steering input unit 121a.

The sensing unit 130 senses a signal related to the running of the vehicle 100 or the like. To this end, the sensing unit 130 may include a sensor such as a collision sensor, a wheel sensor, a velocity sensor, a tilt sensor, a weight sensor, a heading sensor, a yaw sensor, a gyro sensor, , A position module, a vehicle forward / reverse sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor by steering wheel rotation, a vehicle internal temperature sensor, an internal humidity sensor, an ultrasonic sensor, a radar, .

Thus, the sensing unit 130 can acquire the vehicle collision information, vehicle direction information, vehicle position information (GPS information), vehicle angle information, vehicle speed information, vehicle acceleration information, vehicle tilt information, , Fuel information, tire information, vehicle lamp information, vehicle internal temperature information, vehicle interior humidity information, and the like.

The sensing unit 130 may further include an accelerator pedal sensor, a pressure sensor, an engine speed sensor, an air flow sensor AFS, an intake air temperature sensor ATS, a water temperature sensor WTS, A position sensor (TPS), a TDC sensor, a crank angle sensor (CAS), and the like.

The sensing unit 130 may include a biometric information sensing unit 131. The biometric information sensing unit 131 senses and acquires the passenger's biometric information. The biometric information may include fingerprint information, iris-scan information, retina-scan information, hand geo-metry information, facial recognition information, Voice recognition information. The biometric information sensing unit 131 may include a sensor for sensing the passenger's biometric information. Here, the camera 122 and the microphone 123 can operate as sensors. The biometric information sensing unit 131 may acquire hand shape information and facial recognition information through the second camera 122b. The biometric information sensing unit 131 can acquire the voice recognition information through the microphone 123. [

Meanwhile, the biometric information sensing unit 131 may further include a fingerprint recognition scanner, an iris recognition scanner, or a retinal recognition scanner to acquire fingerprint recognition information, iris recognition information, or retinal recognition information of a passenger.

The output unit 140 may include a display unit 141, an acoustic output unit 142, and a haptic output unit 143 for outputting information processed by the control unit 180.

The display unit 141 may display information processed by the controller 180. [ For example, the display unit 141 can display vehicle-related information. Here, the vehicle-related information may include vehicle control information for direct control of the vehicle, or vehicle driving assistance information for a driving guide to the vehicle driver.

The display unit 141 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED) display, a 3D display, and an e-ink display.

The display unit 141 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. This touch screen may function as a user input 124 that provides an input interface between the vehicle 100 and the user and may provide an output interface between the vehicle 100 and the user. In this case, the display unit 141 may include a touch sensor that senses a touch with respect to the display unit 141 so as to receive a control command by a touch method. When a touch is made to the display unit 141, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

On the other hand, two or more display units 141 may exist. For example, the first display unit 141 may be formed in the form of a cluster so that the driver can confirm the information while driving. The second display unit 141b is provided in one area of the center fascia and can operate as an AVN (Audio Video Navigation) apparatus.

Meanwhile, according to the embodiment, the display unit 141 may be implemented as a Head Up Display (HUD). When the display unit 141 is implemented as a HUD, information can be output through a transparent display provided in the windshield. Alternatively, the display unit 141 may include a projection module to output information through an image projected on the windshield.

The sound output unit 142 converts an electric signal from the control unit 180 into an audio signal and outputs the audio signal. For this purpose, the sound output unit 142 may include a speaker or the like. It is also possible for the sound output section 142 to output a sound corresponding to the operation of the user input section 124. [

The haptic output unit 143 generates a tactile output. For example, the haptic output section 143 may operate to vibrate the steering wheel, the seat belt, and the seat so that the user can recognize the output.

The vehicle drive unit 150 can control the operation of various devices of the vehicle. The vehicle driving unit 150 includes a power source driving unit 151, a steering driving unit 152, a brake driving unit 153, a lamp driving unit 154, an air conditioning driving unit 155, a window driving unit 156, an airbag driving unit 157, A driving unit 158 and a suspension driving unit 159.

The power source drive unit 151 can perform electronic control of the power source in the vehicle 100. [

For example, when the fossil fuel-based engine (not shown) is a power source, the power source drive unit 151 can perform electronic control of the engine. Thus, the output torque of the engine and the like can be controlled. When the power source driving unit 151 is an engine, the speed of the vehicle can be limited by limiting the engine output torque under the control of the control unit 180. [

As another example, when the electric-based motor (not shown) is a power source, the power source drive unit 151 can perform control on the motor. Thus, the rotation speed, torque, etc. of the motor can be controlled.

The steering driver 152 may perform electronic control of the steering apparatus in the vehicle 100. [ Thus, the traveling direction of the vehicle can be changed.

The brake driver 153 can perform electronic control of a brake apparatus (not shown) in the vehicle 100. [ For example, the speed of the vehicle 100 can be reduced by controlling the operation of the brakes disposed on the wheels. As another example, it is possible to adjust the traveling direction of the vehicle 100 to the left or right by differently operating the brakes respectively disposed on the left wheel and the right wheel.

The lamp driving unit 154 can control the turn-on / turn-off of the lamp disposed inside or outside the vehicle. Also, the intensity, direction, etc. of the light of the lamp can be controlled. For example, it is possible to perform control on a direction indicating lamp, a brake lamp, and the like.

The air conditioning driving unit 155 can perform electronic control on the air conditioner in the vehicle 100. [ For example, when the temperature inside the vehicle is high, the air conditioner can be operated to control the cooling air to be supplied into the vehicle.

The window driving unit 156 may perform electronic control of a window apparatus in the vehicle 100. [ For example, it can control the opening or closing of left and right windows on the side of the vehicle.

The airbag drive unit 157 may perform electronic control of an airbag apparatus in the vehicle 100. [ For example, at risk, the airbag can be controlled to fire.

The sunroof driving unit 158 may perform electronic control of a sunroof apparatus (not shown) in the vehicle 100. [ For example, you can control the opening or closing of the sunroof.

The suspension driving unit 159 can perform electronic control of the suspension apparatus in the vehicle 100. [ For example, when there is a curvature on the road surface, it is possible to control the suspension device so as to reduce the vibration of the vehicle 100. [

The memory 160 is electrically connected to the control unit 180. The memory 180 may store basic data for the unit, control data for controlling the operation of the unit, and input / output data. The memory 190 may be, in hardware, various storage media such as ROM, RAM, EPROM, flash drive, hard drive, and the like.

The memory 160 may store biometric information of a user corresponding to the portable V2X terminal and the wearable device by matching with at least one portable V2X terminal and a wearable device. For example, the memory 160 may store fingerprint information, iris-scan information, retina-scan information, and hand geo-metry information of a user matching the first wearable device ) Information, facial recognition information, or voice recognition information.

The interface unit 170 may serve as a pathway to various kinds of external devices connected to the vehicle 100. For example, the interface unit 170 may include a port that can be connected to the portable V2X terminal 200 or the wearable device 300, and may be connected to the portable V2X terminal 200 or the wearable device 300 You can connect. In this case, the interface unit 170 can exchange data with the portable V2X terminal 200 or the wearable device 300.

Meanwhile, the interface unit 170 may serve as a path for supplying electrical energy to the portable V2X terminal 200 or the wearable device 300 connected thereto. When the portable V2X terminal 200 or the wearable device 300 is electrically connected to the interface unit 170, the interface unit 170 controls the electric energy supplied from the power unit 190 according to the control of the controller 180 To the portable V2X terminal 200 or the wearable device 300.

The control unit 180 can control the overall operation of each unit in the vehicle 100. [ Here, the controller 180 may be referred to as an ECU (Electronic Control Unit).

The controller 180 may be implemented in hardware as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs) processors, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions.

According to the control of the controller 180, the power supply 190 can supply power necessary for operation of each component. In particular, the power supply unit 190 can receive power from a battery (not shown) or the like inside the vehicle.

The portable V2X terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC ), Tablet PCs, ultrabooks, wearable devices (e.g., smartwatches, smart glass, HMDs (head mounted displays), etc.) .

4A and 4C are block diagrams for explaining a portable V2X terminal related to the present invention, and FIGS. 4B and 4C are conceptual diagrams showing an example of a portable V2X terminal related to the present invention from different directions .

The portable V2X terminal 200 includes a wireless communication unit 210, an input unit 220, a sensing unit 240, an output unit 250, an interface unit 260, a memory 270, a control unit 280, and a power supply unit 290 ), And the like. The components shown in FIG. 4A are not essential for implementing a portable V2X terminal, so that the portable V2X terminal described herein can have more or fewer components than the components listed above.

More specifically, the wireless communication unit 210 among the above-mentioned components can communicate with the portable V2X terminal 200 and the wireless communication system, between the portable V2X terminal 200 and the vehicle 100, between the portable V2X terminal 200 and other portable V2X terminal 200, or between the portable V2X terminal 200 and the external server. In addition, the wireless communication unit 210 may include one or more modules for connecting the portable V2X terminal 200 to one or more networks.

The wireless communication unit 210 may include at least one of a broadcast receiving module 211, a mobile communication module 212, a wireless Internet module 213, a short distance communication module 214 and a location information module 215 .

The input unit 220 includes a camera 221 or an image input unit for inputting an image signal, a microphone 222 for inputting an audio signal, an audio input unit, a user input unit 223 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 220 may be analyzed and processed by a user's control command.

The sensing unit 240 may include at least one sensor for sensing at least one of information in the portable V2X terminal, surrounding environment information surrounding the portable V2X terminal, and user information. For example, the sensing unit 240 may include a proximity sensor 241, an illumination sensor 242, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 221, a battery gauge, an environmental sensor (such as a barometer, a hygrometer, a thermometer, a radiation detection sensor, a temperature sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the portable V2X terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 250 includes at least one of a display unit 251, an acoustic output unit 252, a haptrip module 253, and a light output unit 254 for generating an output related to a visual, auditory, can do. The display unit 251 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen functions as a user input unit 223 that provides an input interface between the portable V2X terminal 200 and a user and can provide an output interface between the portable V2X terminal 200 and a user.

The interface unit 260 serves as a channel with various kinds of external devices connected to the portable V2X terminal 200. The interface unit 260 may be configured to connect a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the portable V2X terminal 200, corresponding to the connection of the external device to the interface unit 260, the portable V2X terminal 200 can perform appropriate control related to the connected external device.

In addition, the memory 270 stores data supporting various functions of the portable V2X terminal 200. The memory 270 may store a plurality of application programs (application programs or applications) driven by the portable V2X terminal 200, data for operation of the portable V2X terminal 200, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least some of these applications may reside on the portable V2X terminal 200 from the time of shipment for the basic functions (e.g., phone call incoming, calling, message receiving, calling functions) of the portable V2X terminal 200 have. Meanwhile, the application program may be stored in the memory 270, installed on the portable V2X terminal 200, and operated by the control unit 280 to perform the operation (or function) of the portable V2X terminal.

In addition to the operations related to the application program, the control unit 280 typically controls the overall operation of the portable V2X terminal 200. The control unit 280 may process or process signals, data, information or the like inputted or outputted through the above-mentioned components or may drive an application program stored in the memory 270 to provide or process appropriate information or functions to the user.

In addition, the controller 280 may control at least some of the components illustrated in FIG. 4A to drive an application program stored in the memory 270. FIG. Further, the controller 280 may operate at least two of the components included in the portable V2X terminal 200 in combination with each other for driving the application program.

Under the control of the controller 280, the power supply unit 290 supplies power to the components included in the portable V2X terminal 200 by receiving external power and internal power. The power supply unit 290 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with each other to implement a method of operation, control, or control of a portable V2X terminal in accordance with various embodiments described below. Also, the operation, control, or control method of the portable V2X terminal may be implemented on a portable V2X terminal by driving at least one application program stored in the memory 270. [

Hereinafter, the components listed above will be described in more detail with reference to FIG. 4A, before explaining various embodiments implemented through the portable V2X terminal 200 described above.

First, referring to the wireless communication unit 210, the broadcast receiving module 211 of the wireless communication unit 210 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the V2X terminal 200 for simultaneous broadcast reception or broadcast channel switching of at least two broadcast channels.

The mobile communication module 212 may be a mobile communication module or a mobile communication module that is capable of communicating with one or more mobile communication devices in a mobile communication environment using technology standards or communication methods (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution And an external terminal, or a server on a mobile communication network established according to a long term evolution (AR), a long term evolution (AR), or the like.

The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 213 is a module for wireless Internet access, and may be built in or externally attached to the portable V2X terminal 200. The wireless Internet module 213 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 113 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The wireless Internet module 213 for performing a wireless Internet connection through the mobile communication network can be used for wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE and LTE- May be understood as a kind of the mobile communication module 212.

The short-range communication module 214 is for short-range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The short-range communication module 214 is connected between the portable V2X terminal 200 and the wireless communication system through the wireless area network, between the portable V2X terminal 200 and the vehicle 100, between the portable V2X terminal 200 and the portable communication terminal, Or between the portable V2X terminal 200 and another portable V2X terminal 200, or between the portable V2X terminal 200 and another portable V2X terminal 200 (or an external server). The short-range wireless communication network may be a short-range wireless personal area network.

Here, the other portable V2X terminal 200 is a wearable device (e.g., a smartwatch) capable of interchanging (or interlocking) data with the portable V2X terminal 200 according to the present invention, Smart glass, HMD (head mounted display)). The short range communication module 214 can detect (or recognize) a wearable device capable of communicating with the portable V2X terminal 200 around the portable V2X terminal 200. [ If the detected wearable device is a device that is authorized to communicate with the portable V2X terminal 200 according to the present invention, the control unit 280 controls the portable V2X terminal 200 to transmit at least a part of the data processed by the portable V2X terminal 200, Module 214 to the wearable device. Therefore, the user of the wearable device can use the data processed by the portable V2X terminal 200 through the wearable device. For example, according to this, when a phone is received in the portable V2X terminal 200, the user performs a phone call through the wearable device, or when a message is received in the portable V2X terminal 200, It is possible to confirm the received message.

The position information module 215 is a module for obtaining the position (or current position) of the portable V2X terminal, and a representative example thereof is a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, a portable V2X terminal can acquire the position of a portable V2X terminal using a signal sent from a GPS satellite by utilizing a GPS module. As another example, a portable V2X terminal can utilize a Wi-Fi module to acquire the location of a portable V2X terminal based on information of a wireless AP (wireless access point) transmitting or receiving a wireless signal with the Wi-Fi module have. Optionally, the location information module 215 may perform any of the other functions of the wireless communication unit 210 to obtain data regarding the location of the portable V2X terminal, in addition or in addition. The location information module 215 is a module used to obtain the location (or current location) of the portable V2X terminal and is not limited to a module that directly calculates or obtains the location of the portable V2X terminal.

Next, the input unit 220 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For inputting image information, the portable V2X terminal 200 One or a plurality of cameras 221 may be provided. The camera 221 processes an image frame such as a still image or a moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 251 or stored in the memory 270. [ The plurality of cameras 221 provided in the portable V2X terminal 200 may be arranged to have a matrix structure and the portable V2X terminal 200 may be connected to the portable V2X terminal 200 through a camera 221 having a matrix structure, A plurality of pieces of image information having a focus can be input. In addition, the plurality of cameras 221 may be arranged in a stereo structure to acquire a left image and a right image for realizing the stereoscopic image.

The microphone 222 processes the external acoustic signal into electrical voice data. The processed voice data can be utilized variously according to a function (or a running application program) being executed in the portable V2X terminal 200. [ Meanwhile, the microphone 222 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 223 is used to receive information from a user. When information is input through the user input unit 223, the controller 280 controls the operation of the portable V2X terminal 200 to correspond to the input information have. The user input unit 223 may include a mechanical input unit (or a mechanical key, for example, a button located on the front, rear, or side of the portable V2X terminal 200, a dome switch, , Jog switches, etc.) and touch-type input means. For example, the touch-type input means may comprise a virtual key, a soft key or a visual key displayed on the touch screen through software processing, The virtual key or the visual key can be displayed on the touch screen with various forms. For example, the virtual key or the visual key can be displayed on the touch screen, ), An icon, a video, or a combination thereof.

Meanwhile, the sensing unit 240 senses at least one of information in the portable V2X terminal, surrounding environment information surrounding the portable V2X terminal, and user information, and generates a corresponding sensing signal. The control unit 280 may control the driving or operation of the portable V2X terminal 200 or may perform data processing, function or operation related to an application program installed in the portable V2X terminal 200 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 240 will be described in more detail.

First, the proximity sensor 241 refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. The proximity sensor 241 may be disposed in an inner area of the portable V2X terminal wrapped by the touch screen as described above or in proximity to the touch screen.

Examples of the proximity sensor 241 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is electrostatic, the proximity sensor 241 can be configured to detect the proximity of the object with a change in the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as "proximity touch & The act of actually touching an object on the screen is called a "contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 241 is capable of sensing proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, have. Meanwhile, the control unit 280 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 241 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Further, the control unit 280 can control the portable V2X terminal 200 so that different operations or data (or information) are processed depending on whether the touch to the same point on the touch screen is a proximity touch or a contact touch have.

The touch sensor uses a touch (or touch input) applied to the touch screen (or the display unit 251) using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, Detection.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated in a specific portion to an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the control unit 280. Thus, the control unit 280 can know which area of the display unit 251 is touched or the like. Here, the touch controller may be a separate component from the control unit 280, and may be the control unit 280 itself.

On the other hand, the control unit 280 may perform different controls or perform the same control according to the type of the touch object, which touches the touch screen (or a touch key provided in the touch screen). Depending on the type of the touch target object, whether to perform different controls or to perform the same control may be determined according to the operating state of the portable V2X terminal 200 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors discussed above can be used independently or in combination to provide a short touch (touch), a long touch, a multi touch, a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. On the other hand, the controller 280 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 221 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 221 and the laser sensor can be combined with each other to sense a touch of a sensing object with respect to a three-dimensional stereoscopic image. The photosensor can be laminated to the display element, which is adapted to scan the movement of the object to be detected proximate to the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 251 displays (outputs) information processed by the portable V2X terminal 200. [ For example, the display unit 251 can display execution screen information of an application program driven by the portable V2X terminal 200, UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information have.

Also, the display unit 251 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The audio output unit 252 may output audio data received from the wireless communication unit 210 or stored in the memory 270 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 252 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the portable V2X terminal 200. [ The sound output unit 252 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 253 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 253 may be vibration. The intensity and pattern of the vibration generated in the haptic module 253 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 253 may combine and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 253 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a scratch on the skin surface, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 253 can not only transmit the tactile effect through the direct contact but also can be implemented so that the user can feel the tactile effect through the muscular sense such as the finger or the arm. The haptic module 253 may include two or more haptic modules 253 according to the configuration of the portable V2X terminal 200. [

The light output unit 254 outputs a signal for notifying the occurrence of an event using the light of the light source of the portable V2X terminal 200. Examples of events that occur in the portable V2X terminal 200 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the optical output unit 254 is implemented as the portable V2X terminal emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the portable V2X terminal detecting the event confirmation of the user.

The interface unit 260 serves as a path to all the external devices connected to the portable V2X terminal 200. The interface unit 260 receives data from an external device or supplies power to each component in the portable V2X terminal 200 or allows data in the portable V2X terminal 200 to be transmitted to an external device. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio input / output port, a video input / output port, an earphone port, and the like may be included in the interface unit 260.

The identification module is a chip for storing various information for authenticating the usage right of the portable V2X terminal 200 and includes a user identification module (UIM), a subscriber identity module (SIM) A universal subscriber identity module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 200 through the interface unit 260.

When the portable V2X terminal 200 is connected to an external cradle, the interface unit 260 may be a path through which the power from the cradle is supplied to the portable V2X terminal 200, And various input command signals may be transmitted to the portable V2X terminal 200. The various command signals input from the cradle or the power source can be operated as a signal for recognizing that the portable V2X terminal 200 is correctly mounted on the cradle.

The memory 270 may store a program for the operation of the controller 280 and temporarily store input / output data (e.g., phone book, message, still image, moving picture, etc.). The memory 270 may store data on vibrations and sounds of various patterns that are output upon touch input on the touch screen.

The memory 270 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The portable V2X terminal 200 may be operated in association with a web storage that performs the storage function of the memory 270 on the Internet.

Meanwhile, as described above, the control unit 280 controls an operation related to an application program and an overall operation of the portable V2X terminal 200. [ For example, when the state of the portable V2X terminal satisfies a set condition, the controller 280 may execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 280 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing capable of recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively . Furthermore, the controller 280 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the portable V2X terminal 200 according to the present invention.

The power supply unit 290 receives external power and internal power under the control of the controller 280 and supplies power required for operation of the respective components. The power supply unit 290 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

In addition, the power supply unit 290 may include a connection port, and the connection port may be configured as an example of an interface 260 through which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 290 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 290 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

In the following, various embodiments may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

In the foregoing, the configurations of the vehicle and the portable V2X terminal relating to the present invention have been described in detail with reference to FIGS. 1 to 4. FIG. Hereinafter, a portable V2X terminal capable of selectively transmitting a V2X message having a priority processing message type in a power saving mode according to a preferred embodiment of the present invention will be described in detail.

FIG. 5 is a diagram for a schematic description of a V2X communication system according to an embodiment of the present invention. Referring to FIG.

5, the V2X communication system 500 includes a V2X server 510 connected to the Internet network, a V2X base station 520 installed around the road, a V2X terminal (not shown) installed in the vehicle 100, Or a portable V2X terminal 530 owned by a pedestrian or the like.

The V2X server 510 is connected to one or more V2X base stations 520 installed in the vicinity of the road and is connected to the V2X base station 520 in a variety of traffic such as real time traffic situation, Information can be collected. At this time, the V2X server 510 may be, for example, an operation server of a traffic information center or a traffic safety server, but is not limited thereto.

The V2X base station 520 is based on sensing data input through a sensing unit such as a camera, an infrared sensor, a radar, a rider, and the like, V2X communication (i.e., V2I communication) data transmitted / received to / Various traffic information such as real time traffic condition, road condition, traffic control status, and the like can be acquired. The V2X base station 520 transmits the map map, traffic signal system, traffic information, notification information, and various service information provided from the V2X server 510 to the vehicle 100 and the V2X terminal Lt; / RTI >

The V2X terminal installed in the vehicle 100 can exchange various messages through the V2X communication with the surrounding V2X base station 520, the V2X terminal installed in the other vehicle, and the portable V2X terminal 530 of the driver or the pedestrian. Also, the portable V2X terminal 530 of the driver or the pedestrian can exchange various messages through the V2X communication with the nearby V2X base station 520, the V2X terminal installed in the vehicle, and the like.

For example, messages related to real-time traffic information, traffic safety, traffic signals, etc. may be exchanged between the vehicle and the V2X base station. Messages related to forward traffic information, vehicle access notification, collision warning, etc. may be exchanged between the vehicle and the vehicle. Messages related to entertainment information, service information, pedestrian position / speed information, vehicle position / speed information, vehicle control information, and the like can be exchanged between the vehicle and the portable V2X terminal.

V2X communication technology used in the V2X communication system 500 for vehicle-to-vehicle (V2V), vehicle-to-base station (V2I), or vehicle-to-mobile terminal (V2N) wireless communication is described in IEEE 802.11p WAVE communication, 3G / 4G / 5G communication defined by 3GPP, and Bluetooth low power communication (v 4.0) prescribed by Bluetooth SIG.

On the other hand, since the V2X server 510, the V2X base station 520, the V2X terminal installed in the vehicle and the like in the V2X communication system 500 are always supplied with electric power by wire, there is no problem in the operation restriction according to the power state .

On the other hand, since the operation of the portable V2X terminals 530 and 540 of the driver or the pedestrian is limited depending on the battery state, it is necessary to efficiently manage the power of the terminal system. In particular, since much power is consumed in communication with a vehicle or a V2X base station, the present invention provides a message transmission method of a portable V2X terminal for minimizing battery power consumption.

6 is a flowchart illustrating an operation of a portable V2X terminal according to an exemplary embodiment of the present invention.

6, the controller 280 periodically measures the remaining power of the portable V2X terminal 200 (i.e., the remaining battery power) when the portable V2X terminal 200 is in the normal mode or when the power management mode is activated (S605). At this time, the measurement period of the remaining power amount may be preset by the user or may be set to default by the manufacturer.

In another embodiment, the control unit 280 may measure the remaining power amount of the portable V2X terminal 200 every time a V2X message is generated, instead of periodically measuring the power at regular intervals.

The control unit 280 can check whether the remaining power amount of the portable V2X terminal 200 is less than or equal to a predetermined first power threshold value at step S610. At this time, the first power threshold value is a power threshold value for switching the operation mode of the portable V2X terminal 200 from the normal mode to the power saving mode (or the power save transmission mode). In addition, the first power threshold may be preset by the user or may be set by default by the manufacturer.

If it is determined in operation 610 that the remaining power exceeds the first power threshold value, the controller 280 may continue operating the operation mode of the portable V2X terminal 200 in the normal mode. In this case, when generating the V2X message, the control unit 280 can transmit all the generated messages to the target device (e.g., the vehicle, the V2X base station, or the other portable V2X terminal) without needing to confirm the type of the corresponding message.

On the other hand, if it is determined in operation 610 that the remaining power is less than the first power threshold value, the controller 280 can check whether the battery of the portable V2X terminal 200 is being charged through the external charger or the like (S615 ).

As a result of step 615, when the battery is being charged, the controller 280 can continue to operate the operation mode of the portable V2X terminal 200 in the normal mode even if the remaining power amount is smaller than the first power threshold value. On the other hand, if the battery is not being charged, the control unit 280 can switch the operation mode of the portable V2X terminal 200 from the normal mode to the power saving mode (S620).

At this time, the control unit 280 may provide a menu for allowing the user to set whether or not to process an exception when charging the battery. When the 'exception setting item for charging' is selected or activated through the menu, the control unit 280 can perform the operation of step 615 described above.

On the other hand, when the 'exception setting item for charging' is not selected or activated through the menu, the controller 280 controls the portable V2X terminal (for example, 200 can be switched from the normal mode to the power saving mode.

Alternatively, if the remaining power of the terminal 200 is less than or equal to the first power threshold value, the portable V2X terminal 200 does not need to provide a menu for setting whether or not to process an exception during charging, Can be configured to be switched from the normal mode to the power saving mode.

The control unit 280 may generate a V2X message to be transmitted to the target device according to a command of the user or information request of the neighboring device (S625). That is, the V2X message may be generated in the portable V2X terminal 200 after entering the power saving mode.

The V2X message generated in the portable V2X terminal 200 has a value of a general message type (for example, bit 0) and a value of a priority processing message type (for example, bit 1) according to its attribute. At this time, the value of the message type may be recorded in a header portion or a payload portion of the corresponding message frame.

For example, as shown in FIG. 7A, when V2X messages are transmitted / received through WAVE communication defined in IEEE 802.11p, the corresponding V2X messages can be transmitted in the form of a WAVE Short Message Frame 700. [

The WAVE Short Message Frame 700 includes a WSMP Header field 710 and a WSM Data field 720. The WSMP Header field 710 includes a version field 711, a PSID field 712, an Extension field 712, 713, a WAVE Element ID field 714, and a Length field 715.

The WAVE Element ID field 714 indicates the identifier of the WSMP header. The Length field 715 indicates the version of the WSM data field 711. The WSID field 711 indicates the version of the WAVE protocol, the PSID field 712 indicates the identifier of the Provider Service, 720 < / RTI >

The Extension field 713 includes a Channel Number field 713_1 indicating a channel used for V2X communication, a Data Rate field 713_2 indicating a data transmission rate of the communication, a Transmit Power Used field 713_3 indicating a transmission power used for the communication ), And the like.

The WSM data field 720 may include a payload data field 721 including the actual data of the WAVE Short Message and a Priority ID field (or a Message Type field 722) indicating the priority or type of the WAVE Short Message . At this time, the Priority ID field 721 may record the value of the general message type or priority processing message type proposed in the present invention.

7B, the Priority ID field 713_4 is included in the Extension field 713 of the header field 710, not in the data field 720 of the WAVE Short Message Frame 700. In other words, . Likewise, the Priority ID field 713_4 may record the values of the general message type or priority processing message type proposed in the present invention.

The general message type proposed in the present invention is a general message type transmitted / received between devices in the V2X communication system. The V2X message having a value of the corresponding type is transmitted in a power saving mode state (i.e., a state below a predetermined power threshold value) It can be set not to be transmitted.

The priority processing message type proposed by the present invention includes urgent event information such as a disaster accident and a traffic accident, and is a message type to be processed first, and a V2X message having a value of the corresponding type can be set to be transmitted even in the power saving mode .

On the other hand, when there is a message type to be preferentially processed among the messages transmitted / received in the existing V2X communication system, the contents of the power threshold value proposed in the present invention can be added to the existing priority message type Will be apparent to those skilled in the art.

The control unit 280 can check whether the corresponding message type is a priority processing message type or a general message type by referring to the message type value recorded in the Priority ID field of the message frame at step S630.

If it is determined in operation 630 that the type of the V2X message generated in the portable V2X terminal is a priority processing message type, the controller 280 may transmit the V2X message to the target device in operation S635.

At this time, the control unit 280 sets the transmission output power lower than the general transmission output power at the antenna end, and transmits the V2X message, thereby minimizing battery consumption. As the transmission output power is reduced, the transmission distance of the message is reduced, so that devices capable of receiving the message may be limited. In this case, the neighboring device that receives the message can refer to the destination information of the message, and can forward the message to the relay device or the target device. On the other hand, the output power for transmitting the V2X message in the power saving mode may be preset by the user or may be set as a default by the manufacturer.

When a multi array antenna is installed in the portable V2X terminal 200, the controller 280 detects the position of the target device, forms a beam in a direction in which the corresponding device is positioned, and transmits a V2X message The consumption of the battery can be minimized. In this case, the controller 180 may provide a menu for allowing the user to set whether to use beamforming of the multi-array antenna.

For example, as shown in FIG. 8, the portable V2X terminal can set the output method of the V2X message differently depending on the remaining amount of the battery. That is, in the normal mode, the first portable V2X terminal 810 can transmit the V2X message by setting the output power to 100% after forming the beam in all directions (i.e., 360 degrees) through the multi-array antenna. On the other hand, in the power saving mode, the second portable V2X terminal 820 forms a beam of a predetermined angle in a direction in which the adjacent vehicle 830 is located through the multi-array antenna, and then transmits the V2X message with the output power set to 50% .

If it is determined in step 630 that the type of the V2X message generated in the portable V2X terminal is the general message type, the controller 280 does not transmit the V2X message to the target device, (S640).

There are two ways to handle a generic message in sleep mode: store all common messages in the cache in the sleep mode, store only the last generic message in the cache, and cache only regular messages that occur during the user-specified time How to save, and how to discard all generic messages that occurred during sleep mode.

The control unit 280 may provide an option menu for allowing the user to select one of the above-described general message processing methods. At this time, the option menu may include 'all message storage items', 'recent message storage items', 'designated message storage items', 'all message discard items' and the like.

If 'all message storage items' is selected through the option menu, the control unit 280 can temporarily store all the general messages generated in the power saving mode in a cache. In addition, when the 'recent message storage item' is selected through the corresponding option menu, the control unit 280 can temporarily store only the last general message generated in the power save mode in the cache.

In addition, when 'designated message storage item' is selected through the corresponding option menu, the controller 280 can temporarily store only a general message generated in a time interval preset by the user in the power saving mode. In addition, when 'all message discard item' is selected through the corresponding option menu, the control unit 280 can immediately discard all general messages generated in the power saving mode without having to store them in the cache. A detailed description of this general message processing will be given later with reference to FIG.

On the other hand, in another embodiment, it is possible to configure any one of the above methods to be set to a default by the manufacturer, without having to select any of the general message processing methods through the above-described option menu.

Thereafter, the control unit 280 can check whether the remaining power amount of the portable V2X terminal 200 is equal to or less than a predetermined second power threshold value (S645). At this time, the second power threshold is the final power threshold, which is the power threshold at which the V2X communication must be terminated to maintain the basic operation (or minimal operation) of the portable V2X terminal 200. [ Likewise, the second power threshold may be preset by the user or may be set by default by the manufacturer. The second power threshold value is preferably less than or equal to the first power threshold value.

If it is determined in step 645 that the residual power exceeds the second power threshold value, the controller 280 may repeat the operations of steps 625 to 635 described above. That is, when generating the V2X message, the control unit 280 transmits only the V2X message having the priority processing message type to the target device.

On the other hand, if it is determined that the remaining power amount is equal to or less than the second power threshold value in step 645, the controller 280 can perform only the basic operation of the portable V2X terminal 200 after terminating all applications related to the V2X communication S650).

Upon completion of the V2X communication, the control unit 280 receives additional data according to the type of service currently being executed in the portable V2X terminal 200 and stores the received data in the memory 270. [ For example, if the portable V2X terminal 200 is running the V2X navigation service and assumes that the road data that the terminal 200 normally can have in the power state below the second power threshold value is only 3 km forward , The corresponding terminal 200 may transmit the 10 km section through the last V2X communication and store it in the memory 270 and utilize the corresponding data.

As described above, the portable V2X terminal according to the present invention has an advantage that power consumption of the battery can be minimized by selectively transmitting only the V2X message having the priority processing message type when the remaining battery level is below the predetermined threshold value have.

9 is a flowchart illustrating the operation of a portable V2X terminal that processes a general message according to a predetermined method in a power saving mode.

Referring to FIG. 9, when the V2X message is generated, the controller 280 determines whether the corresponding message is a priority message or a general message based on the message type value of the corresponding message (S905).

If it is determined that the message is a general message, the control unit 280 can confirm the general message processing method previously selected by the user or determined by the manufacturer by default (S910). Herein, the general message processing method includes 'all message storing method', 'last message storing method', 'time designated message storing method', 'all message discarding method' and the like.

If it is determined in step 910 that the general message processing method is 'all message storage method', the controller 280 may store the general message generated in the power saving mode in a memory or a cache (S915).

If it is determined in step 910 that the general message processing method is 'last message storage method', the controller 280 may discard the previous general message stored in the cache and store the current general message in the memory or cache (S920, S925). That is, the control unit 280 can store only the last generic message among the general messages generated in the power saving mode in the memory or the cache.

If it is determined in step 910 that the general message processing method is a 'time-designated message storage method,' the controller 280 may check whether the generation time of the general message is within a predetermined time period S930). If it is determined that the generated message is within the designated time, the control unit 280 may store the general message generated in the power save mode in the memory or cache (S935). If it is determined that the generated message is not within the designated time, the control unit 280 may discard the general message generated in the power saving mode (S940).

If it is determined in operation 910 that the general message processing method is 'all message discarding method', the control unit 280 may discard the general message generated in the power saving mode without storing it in the memory or cache (S940) . In this case, even if the portable V2X terminal 200 is switched from the power saving mode to the normal mode, there is no general message to be transmitted to the target device.

Thereafter, the control unit 280 can check whether the operation mode of the portable V2X terminal 200 is switched from the power saving mode to the normal mode by charging the battery or replacing the battery (S945).

If it is determined in operation 945 that the operation mode of the portable V2X terminal 200 is not changed from the power saving mode to the normal mode, the controller 280 may repeatedly perform the operations of steps 905 to 940 described above.

If it is determined in operation 945 that the operation mode of the portable V2X terminal 200 is switched from the power saving mode to the normal mode, the control unit 280 may transmit a general message stored in the memory or the cache to the target device (S950 ).

The present invention described above can be embodied as computer-readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer readable medium include a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet). Also, the computer may include a control unit 180 of the terminal. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

100: vehicle 200: portable V2X terminal
210: wireless communication unit 220: input unit
240: sensing unit 250: output unit
260: interface unit 270: memory
280: control unit 290: power supply unit

Claims (11)

A wireless communication unit for providing a V2X (Vehicle to Everything) communication interface; And
The remaining battery power is measured, and if the measured remaining battery power is equal to or less than the first power threshold value, whether or not the battery is being charged through the charger is checked. If the battery is being charged, When the battery is not in the charging state, the operation mode of the portable V2X terminal is switched from the normal mode to the power saving mode, and in the power saving mode, the V2X And a control unit for transmitting only the message to the external device,
Wherein the controller confirms whether the battery is being charged when the battery is set to be an exceptional state through the menu. The method according to claim 1,
Wherein the controller identifies whether the type of the V2X message is a general message type or a priority processing message type based on the message type value set in the V2X message. 3. The method of claim 2,
Wherein the controller stores the V2X message in a memory when the type of the V2X message is a general message type. 3. The method of claim 2,
Wherein the control unit discards the previous V2X message stored in the memory and stores the V2X message in the memory when the type of the V2X message is a general message type. 3. The method of claim 2,
If the type of the V2X message is a general message type, the control unit checks whether the generation time of the V2X message is within a predetermined time interval by the user, and stores only the V2X message generated in the designated time period in the memory The portable V2X terminal. 3. The method of claim 2,
Wherein the controller measures the remaining power of the portable V2X terminal whenever a V2X message is generated. 6. The method according to any one of claims 3 to 5,
Wherein the control unit transmits a V2X message having a general message type stored in the memory to the external device when switching to the normal mode. The method according to claim 1,
Wherein the controller terminates the V2X communication with the external device when the measured remaining power amount is equal to or less than the second power threshold value. The method according to claim 1,
Wherein the control unit transmits the V2X message at a transmission output power lower than a transmission output power of the normal mode in the power saving mode. The method according to claim 1,
Wherein the control unit forms an antenna beam in the direction of the external device in the power saving mode, and transmits the V2X message. Measuring a remaining power amount of the battery;
Determining whether the battery is being charged through a charger when the measured residual power amount is less than or equal to a first power threshold value;
When the battery is being charged, the portable V2X terminal continuously controls the operation mode of the portable V2X terminal to operate in the normal mode. When the battery is not charging, the portable V2X terminal switches the operation mode of the portable V2X terminal from the normal mode to the power saving mode step; And
Transmitting only a V2X message having a priority processing message type to an external device when a V2X message is generated in the power saving mode,
Wherein the checking whether the battery is in a charging state is performed when an exception processing is performed when charging the battery through a menu.

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