V2x device and operation method thereof

Abstract

The present invention relates to an operation method of a V2X device when a plurality of V2X devices are present within a vehicle, and the operation method of the V2X device may comprise the operations of: determining whether or not the V2X device is present within the vehicle; if the V2X device is present within the vehicle, determining whether the V2X device needs to act as a driver or a passenger; when it is determined that the V2X device acts as the driver, transmitting a vehicle basic safety message in which the user type is set as the driver; and when it is determined that the V2X device acts as the passenger, transmitting a vehicle basic safety message in which the user type is set as the passenger.

Description

V2X device and its operation method

[0001] This specification relates to an operating method of a V2X device, and more particularly, to an operating method of a V2X device when there are multiple V2X devices in a vehicle.

[0002]

[0003] V2X (vehicle-to-everything) refers to a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure-based objects through wired and wireless communication. V2X can be divided into four types: V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian).

[0004] According to the SAE (Society of Automobile Engineers) and ETSI (European Telecommunications Standards Institute) standards, devices used in V2X can periodically transmit their location and situation information to surrounding users and receive location and situation information of surrounding users. For this information exchange, the SAE standard and the Korean cooperative autonomous driving system standard specify a number of V2X messages. For example, there is a basic safety message (BSM) transmitted or received by a V2X device installed in a vehicle, and a personal safety message (PSM) transmitted or received by a vulnerable road user (VRU) V2X device.

[0005] In conventional V2X systems, vehicles are mainly equipped with vehicle-specific terminals and use short-range dedicated communication such as DSCR (dedicated short range communication), so it was common for one V2X device to be installed per vehicle.

[0006] However, as V2X devices are no longer dedicated terminals, but are expanded to be equipped in the form of apps on smartphones that use long-distance communications such as 5G communication systems, and can function as V2X devices for vehicles or V2X devices for VRUs depending on manual or automatic settings, the possibility of multiple V2X devices per vehicle has emerged.

[0007] When multiple V2X devices in a vehicle are all configured as vehicle V2X devices, each V2X device can transmit the same BSM to the surrounding vehicles, allowing the surrounding vehicles to receive multiple BSMs transmitted by the same vehicle. In addition, multiple V2X devices in the same vehicle can also exchange BSMs with each other.

[0008] In cases where multiple V2X devices exist in the same vehicle, it may be recognized as if multiple vehicles are present in the same location, which may cause false alarms. Alternatively, multiple V2X devices may transmit the same BSM, which may result in inefficient use of wireless resources due to duplicate reception of the BSM by surrounding V2X devices. This may result in problems such as waste of wireless resources, network congestion, increased communication / server usage costs, and increased battery usage.

[0009]

[0010] Embodiments recognize the above-described problem and propose a method of operating a V2X device that can reduce the transmission and reception of unnecessary V2X messages and prevent false alarms when multiple V2X devices exist in a vehicle.

[0011] The technical tasks to be achieved in this document are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those with ordinary skill in the art from the description below.

[0012]

[0013] According to one embodiment of the present disclosure, a V2X device includes an output device for displaying a screen, a communication device for performing V2X communication, and a processor, wherein the processor determines whether the V2X device is present in a vehicle, and if present in the vehicle, determines whether the V2X device should operate as a driver or as a passenger, and if it determines that the V2X device is operating as a driver, controls to transmit a vehicle basic safety message in which the user type is set to a driver, and if it determines that the device is operating as a passenger, controls to transmit a vehicle basic safety message in which the user type is set to a passenger.

[0014] According to one embodiment, the processor determines whether a second V2X device exists within the vehicle, and if the second V2X device does not exist within the vehicle, sets the V2X device to operate as a driver, and if the second V2X device exists within the vehicle, sets whether to operate as a driver or a passenger manually based on a user input based on the setting, or automatically sets whether to operate as a driver or a passenger based on a relative location with respect to the second V2X device.

[0015] According to one embodiment, the processor calculates a distance between the V2X device and the surrounding V2X device based on latitude and longitude information included in a vehicle basic safety message received from a surrounding V2X device and latitude and longitude information of the V2X device, calculates an angular difference between the heading information included in the vehicle basic safety message received from the surrounding V2X device and the heading direction of the V2X device, and if there is a V2X device in which the distance is less than a first value and the angular difference is less than a second value, it can be determined that the second V2X device is present in the vehicle.

[0016] In one embodiment, the processor may automatically pop up a screen including a driver icon or a companion passenger icon on the output device for manual setting, and set whether to operate as a driver or a companion passenger based on an input of the user selecting either the driver icon or the companion passenger icon.

[0017] According to one embodiment, the processor may set the V2X device to operate as a companion passenger if the relative position of the second V2X device is located to the front left, forward, or left of the V2X device based on the moving direction of the V2X device, and may set the V2X device to operate as a driver if the second V2X device is located to the rear right of the V2X device, or only to the rear, or only to the right of the V2X device based on the moving direction of the V2X device.

[0018] According to one embodiment, when the processor determines that the user is operating as a driver, it can control to transmit a vehicle basic safety message with the user type set to driver in a first cycle, and when the processor determines that the user is operating as a passenger, it can control to transmit a vehicle basic safety message with the user type set to passenger in a second cycle that is longer than the first cycle.

[0019] According to one embodiment, the vehicle basic safety message may include a message number, an identifier, elapsed time from a reference time, a latitude value of the vehicle location, a longitude value of the vehicle location, an altitude value of the vehicle location, an accuracy of the current location of the vehicle, a transmission status of the vehicle, a speed of the vehicle, a direction of travel of the vehicle, a steering wheel angle of the vehicle, acceleration information for each axis, a brake status of the vehicle, a size of the vehicle, and a user type indicating whether the message was transmitted by a V2X device operating as a driver or a V2X device operating as a passenger.

[0020] According to one embodiment, the vehicle basic safety message in which the user type is set to a passenger may further include identifier information of a V2X device operating as a driver within the same vehicle.

[0021] According to one embodiment, the vehicle basic safety message in which the user type is set to the accompanying passenger may further include transmission cycle information of the vehicle basic safety message in which the user type is set to the accompanying passenger.

[0022] According to one embodiment, the processor may perform a safety determination when receiving a vehicle basic safety message in which the user type is set to a driver, and may not perform the safety determination when receiving a vehicle basic safety message in which the user type is set to a passenger.

[0023] According to one embodiment, when the processor receives a first vehicle basic safety message in which the user type is set to a driver, the processor may display a vehicle icon at a point corresponding to a position obtained from the first vehicle basic safety message on the output device screen, and when the processor receives a second vehicle basic safety message in which the user type is set to an accompanying passenger, the processor may display a person icon at a point corresponding to a position obtained from the second vehicle basic safety message on the output device screen.

[0024] According to one embodiment, the processor may delete a person icon representing a companion passenger displayed on the output device screen if a vehicle basic safety message in which the user type is set to a companion passenger is not received within a time period according to the second cycle.

[0025] According to one embodiment, the processor may control the V2X device to be set as a VRU (Vulnerable Road User) and transmit a personal safety message when the V2X device gets off the vehicle.

[0026] According to one embodiment, when the processor receives a vehicle basic safety message in which the user type is set to a passenger, the processor may obtain an identifier of a V2X device operating as the driver, and display a person icon representing the passenger by combining it with a vehicle icon displayed on a screen of the output device based on the basic safety message in which the user type is set to a driver, including the identifier of the V2X device operating as the driver.

[0027] According to one embodiment of the present disclosure, a method of operating a V2X device may include an operation of determining whether the V2X device is present in a vehicle, an operation of determining whether the V2X device should operate as a driver or a passenger if the V2X device is present in the vehicle, an operation of transmitting a vehicle basic safety message in which the user type is set to a driver if the V2X device is determined to operate as a driver, and an operation of transmitting a vehicle basic safety message in which the user type is set to a passenger if the V2X device is determined to operate as a passenger.

[0028] According to one embodiment, the operation of determining whether to operate as a driver or a passenger may include an operation of determining whether a second V2X device exists in the vehicle, an operation of setting the V2X device to operate as a driver if the second V2X device does not exist in the vehicle, an operation of manually setting whether to operate as a driver or a passenger based on a user input based on the setting if the second V2X device exists in the vehicle, or an operation of automatically setting whether to operate as a driver or a passenger based on a relative position with respect to the second V2X device.

[0029] According to one embodiment, the operation of determining whether a second V2X device exists within the vehicle may include an operation of calculating a distance between the V2X device and the surrounding V2X device based on latitude and longitude information included in a vehicle basic safety message received from a surrounding V2X device and latitude and longitude information of the V2X device, an operation of calculating an angular difference between the heading information included in the vehicle basic safety message received from the surrounding V2X device and the heading direction of the V2X device, and an operation of determining that the second V2X device exists within the vehicle if there is a V2X device in which the distance is less than a first value and the angular difference is less than a second value.

[0030] In one embodiment, the action of manually setting whether to operate as a driver or a companion passenger based on the user's input may include an action of automatically popping up a screen including a driver icon or a companion passenger icon on an output device and an action of setting whether to operate as a driver or a companion passenger based on the user's input of selecting either the driver icon or the companion passenger icon.

[0031] According to one embodiment, the operation of automatically setting whether to operate as a driver or a companion passenger based on the relative position with respect to the second V2X device may include an operation of setting the V2X device to operate as a companion passenger if the relative position of the second V2X device is located to the front left, forward, or left of the V2X device based on the direction of travel of the V2X device, and an operation of setting the V2X device to operate as a driver if the second V2X device is located to the rear right of the V2X device, or only to the rear, or only to the right of the V2X device based on the direction of travel of the V2X device.

[0032] According to one embodiment, the operation of transmitting the vehicle basic safety message in which the user type is set to driver may include the operation of transmitting the vehicle basic safety message in which the user type is set to driver in a first cycle, and the operation of transmitting the vehicle basic safety message in which the user type is set to passenger may include the operation of transmitting the vehicle basic safety message in which the user type is set to passenger in a second cycle that is longer than the first cycle.

[0033]

[0034] According to one embodiment of the present disclosure, it is possible to reduce the exchange of unnecessary V2X messages that occur when multiple V2X devices exist in a vehicle.

[0035] Additionally, according to one embodiment of the present disclosure, false alarms that occur when multiple vehicles are recognized to be present at one location can be prevented.

[0036] Additionally, according to one embodiment of the present disclosure, the efficiency of a V2X system can be improved by reducing waste of wireless resources.

[0037] The effects that can be obtained from the method and device proposed in this document are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by a person having ordinary skill in the art to which this document belongs from the description below.

[0038]

[0039] Figure 1 is a drawing showing an example of transmission of a vehicle basic safety message.

[0040] FIG. 2 is a diagram illustrating an example of a vehicle in the vicinity that has transmitted a vehicle basic safety message to a navigation app or a V2X app of a V2X device.

[0041] Figure 3 is a diagram illustrating the configuration of a vehicle's basic safety message.

[0042] FIG. 4 is a diagram illustrating a data frame for representing core data included in a vehicle basic safety message.

[0043] FIG. 5 is a diagram illustrating core data with an added item representing a user type according to various embodiments of the present disclosure.

[0044] FIG. 6 is a flowchart illustrating an operation of determining a safety message to be transmitted by a V2X device according to various embodiments of the present disclosure.

[0045] FIG. 7 is a diagram illustrating an example of a pop-up screen for receiving user input to set up a V2X device as a driver or co-passenger.

[0046] Figure 8 is a flowchart illustrating an example of a V2X device determining whether its owner is a driver or a fellow passenger.

[0047] FIG. 9 is a diagram illustrating an example of a V2X device determining whether another V2X device exists within the same vehicle.

[0048] Figure 10 is a diagram illustrating an example of a V2X device determining whether its owner is a driver or a fellow passenger.

[0049] FIG. 11 is a diagram illustrating an example of a driver or passenger in the vicinity who has transmitted a vehicle basic safety message to a navigation app or a V2X app of a V2X device according to various embodiments of the present disclosure.

[0050] FIG. 12 is a conceptual diagram illustrating a V2X device according to various embodiments of the present disclosure.

[0051]

[0052] The advantages and features of this disclosure, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below, along with the accompanying drawings. However, this disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms. These embodiments are provided solely to ensure the completeness of this disclosure and to fully inform those skilled in the art of the disclosure of the scope of this disclosure. This disclosure is defined solely by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0053] When one component is referred to as being "connected to" or "coupled to" another component, it includes both cases where it is directly connected or coupled to the other component, or cases where there is another component intervening therebetween. Conversely, when one component is referred to as being "directly connected to" or "directly coupled to" another component, it indicates that there is no other component intervening therebetween. "And / or" includes each and any combination of one or more of the mentioned items.

[0054] The terminology used herein is for the purpose of describing embodiments and is not intended to be limiting. In this specification, the singular also includes the plural unless specifically stated otherwise. As used herein, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, operations, and / or elements.

[0055] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used only to distinguish one component from another.

[0056] Therefore, it should be noted that the first component mentioned below may also be a second component within the technical concept of this publication. Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in a meaning that can be commonly understood by those of ordinary skill in the technical field to which this publication pertains. In addition, terms defined in commonly used dictionaries shall not be interpreted ideally or excessively unless explicitly and specifically defined. In addition, in the drawings, the thicknesses, ratios, and dimensions of the components are exaggerated for the effective explanation of the technical content. "And / or" includes all combinations of one or more that can be defined by the associated components.

[0057] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein.

[0058] Figure 1 is a drawing showing an example of transmission of a vehicle basic safety message.

[0059] The V2X device equipped in the vehicle (10) can transmit a vehicle basic safety message (BSM) to transmit basic information related to vehicle safety to external devices such as surrounding vehicles (21 to 25), a road side unit (RSU) (30), or a wireless communication base station (40) so that it can be utilized in various safety-related services and scenarios. Basically, the information transmitted through the vehicle basic safety message can include information about the message transmission time, the current location of the vehicle, transmission status, speed, direction of travel, brake status, vehicle size, etc. In addition, information about abnormal situations related to the vehicle, event information, the previous movement path of the vehicle, the expected future movement path, the vehicle type, etc. can be optionally included.

[0060] The V2X device can directly transmit a vehicle basic safety message to surrounding vehicles (21 to 25) via V2X communication. In addition, the V2X device can also transmit the vehicle basic safety message to a roadside unit (30) or a wireless communication base station (40). The roadside unit (30) or base station (40) can use the received vehicle basic safety message to identify the information and situation of the vehicle, or can transmit it to another vehicle or Vulnerable Road User (VRU) (50) that is not directly connected to the vehicle (10) via V2V (vehicle-to-vehicle).

[0061] External devices can be utilized in a variety of applications and scenarios that require information conveyed through vehicle-specific safety messages. For example, they can be crucial for road hazard alerts based on vehicle location and status, and collision warnings at intersections. As illustrated in Figure 2, a smartphone can display nearby vehicles that have transmitted vehicle-specific safety messages to a navigation app or V2X app, and use this information to alert drivers of potential collision risks, thereby ensuring safety.

[0062] Fig. 3 is a diagram illustrating the configuration of a vehicle basic safety message, and Fig. 4 is a diagram illustrating a data frame for indicating core data included in the vehicle basic safety message.

[0063] FIG. 3 and FIG. 4 may be defined as ASN.1 (Abstract Syntax Notation One) for the vehicle basic safety message and core data described in V2X message specification for cooperative autonomous driving system - Part 2: Vehicle basic safety message (KS R 1600-2:2025).

[0064] Referring to FIG. 3, the vehicle basic safety message may be composed of core data, which includes information on the vehicle's location, transmission status, direction of travel, brake status, etc. as basic information related to vehicle safety; part II data, which includes additional extensions that may be transmitted in relation to vehicle safety; and regional data, which includes information corresponding to regional extensions of the vehicle safety message. Here, the core data is a mandatory component and must be included, and part II data and regional data may not be included as additional components.

[0065] Core data (coreData) is configured in the BSMcoreData format shown in Fig. 4, and the items included in BSMcoreData of Fig. 4 are described in Table 1 below.

[0066] Item Description msgCnt Message sequence number generated by the same sender of the same type id Vehicle identifier, randomly assigned secMark Time elapsed from the reference time lat Latitude of vehicle position long Longitude of vehicle position elev Elevation of vehicle position accuracy Accuracy of vehicle current position transmission Transmission Vehicle transmission status speed Vehicle speed heading Vehicle heading (east of north is positive) angle Vehicle steering wheel angle accelSet Information about acceleration of each axis brakes Vehicle brake status size Size of vehicle

[0067] In addition, the data types representing each item are described in V2X Message Specification for Cooperative Autonomous Driving Systems - Part 2: Basic Vehicle Safety Messages (KS R 1600-2:2025), so detailed descriptions are omitted in this document.

[0068] When a vehicle has multiple V2X devices, each V2X device transmits a vehicle basic safety message as illustrated in FIG. 3, and an external device can receive multiple vehicle basic safety messages transmitted by multiple V2X devices. Then, since the external device has different IDs, it is highly likely that it will determine that multiple vehicles are in the same location and generate a false alarm indicating a possible collision.

[0069] To prevent such false alarms and to prevent unnecessary transmission and reception of vehicle basic safety messages, it is necessary to change the configuration of vehicle basic safety messages.

[0070] FIG. 5 is a diagram illustrating core data with an added item representing a user type according to various embodiments of the present disclosure.

[0071] To address the aforementioned issues, the present disclosure adds an item to core data indicating whether the V2X device belongs to the driver or a passenger. This allows external devices to recognize that the driver and passenger of the same vehicle are transmitting basic vehicle safety messages, and thus avoid generating a potential collision alarm.

[0072] In one embodiment, in order to ensure compatibility with the conventional method, if the core data in the BSMcoreData format does not have a "basicType" entry, the user may be recognized as a driver, and if the "basicType" entry is present, the user may be recognized as a passenger. In this case, the value of the "basicType" entry should be set to passenger. This embodiment may be useful when there is a conventional vehicular V2X device embedded in the vehicle. The vehicular V2X device embedded in the vehicle transmits core data without "basicType" in the conventional manner, and all V2X devices of users on board the vehicle, including the driver, transmit core data including the "basicType" entry set to passenger. Then, an external device can recognize that only one of the multiple V2X devices present in the vehicle is set as a driver and the rest are set as passenger.

[0073] FIG. 6 is a flowchart illustrating an operation of determining a safety message to be transmitted by a V2X device according to various embodiments of the present disclosure.

[0074] Referring to FIG. 6, the user of a V2X device, such as a smartphone equipped with a V2X app, may be a VRU, such as walking on the sidewalk or riding a bicycle, or a driver, or a passenger in the vehicle. The V2X may determine and transmit a safety message that matches the user type of the user of the user. In one embodiment, if the user is a VRU, the V2X device may transmit a personal safety message (PSM), if the user is a driver, the V2X device may transmit a default safety message with the user type set to driver, and if the user is a passenger, the V2X device may transmit a default safety message with the user type set to passenger.

[0075] The composition of the personal safety message can be referred to the standard document V2X Message Specification for Cooperative Autonomous Driving System - Part 6: Personal Safety Message (KS R 1600-6:2025), and the detailed composition is omitted.

[0076] Referring to FIG. 6, in operation S610, a V2X device can determine whether it exists within a vehicle.

[0077] In one embodiment, a V2X device can determine whether it is inside a vehicle based on user settings. For example, if a pedestrian, bicycle, kickboard, or motorcycle is selected instead of a vehicle (710) or passenger (720) in the V2X app installed on a smartphone as shown in FIG. 7, it is set as being outside the vehicle, and if the user selects a vehicle (710) or passenger (720), it can be determined as being inside the vehicle.

[0078] In another embodiment, a V2X device can automatically determine that it is within a vehicle. For example, a V2X device can determine that it is within a vehicle if its location information indicates that it is on the road and is traveling at a certain speed or higher.

[0079] If the V2X device determines that it is not present in the vehicle as a result of the determination in operation S610, it can transmit a personal safety message in operation S630.

[0080] If the V2X device determines that it is present in the vehicle as a result of the judgment at operation S620, it can determine at operation S620 whether its owner is the driver or a passenger.

[0081] In one embodiment, a V2X device can determine whether its owner is a driver or a passenger based on user settings. For example, if the owner selects a vehicle (710) in the V2X app installed on the smartphone illustrated in FIG. 7, the V2X device can determine that its owner is a driver. Additionally, if the owner selects a passenger (720) in the V2X app installed on the smartphone illustrated in FIG. 7, the V2X device can determine that its owner is a passenger.

[0082] In another embodiment, a V2X device may semi-automatically or automatically determine whether its bearer is a driver or a passenger.

[0083] FIG. 8 is a flowchart illustrating an example of a V2X device determining whether its owner is a driver or a fellow passenger, FIG. 9 is a diagram illustrating an example of a V2X device determining whether another V2X device exists in the same vehicle, and FIG. 10 is a diagram illustrating an example of a V2X device determining whether its owner is a driver or a fellow passenger.

[0084] Referring to FIG. 8, in operation S810, the V2X device can determine whether another V2X device exists in the same vehicle.

[0085] As an example, referring to FIG. 9, a V2X device (910) can receive a vehicle basic safety message from a surrounding V2X device (920). The V2X device (910) can obtain location information of a surrounding V2X device (920) based on latitude and longitude information included in the vehicle basic safety message, and can also know the direction of travel of a vehicle in which the surrounding V2X device (920) is riding. The V2X device (910) can calculate a distance between itself and the surrounding V2X device (920) based on its own latitude and longitude information and the latitude and longitude information of the surrounding V2X device (920) obtained through the received vehicle basic safety message. In addition, the V2X device (910) can calculate a difference in direction of travel based on its own direction of travel and the direction of travel of the surrounding V2X device (920) obtained through the received vehicle basic safety message. If the calculated distance from the surrounding V2X device (910) is less than a preset first value and the difference in the direction of travel from the surrounding V2X device (920) is less than a preset second value, the V2X device (910) can determine that another V2X device exists in the same vehicle.

[0086] At operation 810, if the V2X device (910) determines that there is no other V2X device in the same vehicle, it can proceed to operation S830 and be set as the driver.

[0087] If the V2X device (910) determines that another V2X device exists in the same vehicle, it may proceed to operation 820 to determine whether to manually or automatically set the user type. In one embodiment, whether to manually or automatically set the user type may be preset as a parameter.

[0088] Accordingly, if the V2X device (910) determines that another V2X device exists in the same vehicle in operation 810, it can proceed to manual setting (840) or automatic setting (850) according to parameter settings.

[0089] In operation 840, the V2X device (910) may display a driving mode selection screen of the V2X app installed on the smartphone illustrated in FIG. 7 to allow the user to manually set the user type. On this screen, the user may select a vehicle (710) to set the user type to driver, or select a passenger (720) to set the user type to passenger.

[0090] At operation 850, the V2X device (910) can automatically set the user type to driver or passenger based on the relative location with other V2X devices present in the same vehicle.

[0091] Referring to FIG. 10, a V2X device (1010) can set a user type based on the relative position of another V2X device (1020) existing in the same vehicle based on the direction of travel.

[0092] In one embodiment, a V2X device (1010) may determine a user type as a co-passenger if another V2X device (1020) present in the same vehicle is located to the front left, forward, or left.

[0093] Additionally, the V2X device (1020) can determine the user type as a driver if another V2X device (1010) existing in the same vehicle is located at the rear right. Additionally, the V2X device (1020) can determine the user type as a driver if another V2X device (1010) existing in the same vehicle is located only at the rear or only at the right.

[0094] Through the operation of FIG. 8, a V2X device whose user type is set to driver can generate and broadcast a vehicle basic safety message in which the user type is set to driver (VehicleDeviceUserType=1) in FIG. 5. In addition, through the operation of FIG. 8, a V2X device whose user type is set to passenger can generate and broadcast a vehicle basic safety message in which the user type is set to passenger (VehicleDeviceUserType=2) in FIG. 5.

[0095] Aside from the user type set in the vehicle's default safety message, the behavior of a V2X device set as a driver may differ from that of a V2X device set as a passenger.

[0096] A V2X device set as a driver can transmit a vehicle basic safety message in the same manner and format as before. On the other hand, a V2X device set as a passenger can add a driver temporary ID (DriverTemporaryID) to identify the driver V2X device to the vehicle basic safety message it transmits. If a V2X device receiving a vehicle basic safety message has different driver temporary ID (DriverTemporaryID) and temporary ID (TemporaryID) in addition to the user type (VehicleDeviceUserType) value in the vehicle basic safety message, the vehicle basic safety message can be determined to be a vehicle basic safety message transmitted by a V2X device set as a passenger.

[0097] In another embodiment, a V2X device set as a passenger may reduce the size of the vehicle basic safety message by transmitting a vehicle basic safety message that includes only the driver's temporary ID (DriverTemporaryID).

[0098] In another embodiment, a V2X device set as a companion passenger may transmit a vehicle basic safety message with the user type (VehicleDeviceUserType) set to companion passenger (aPASSEENGER(2)) and the driver temporary ID (DriverTemporaryID) not set even if a driver V2X device of the same vehicle is detected.

[0099] In another embodiment, the period at which a V2X device set as a driver transmits a vehicle basic safety message is 0.1 seconds, while a V2X device set as a passenger may transmit a vehicle basic safety message according to a longer period set by the owner (e.g., 1 second, 10 seconds, 100 seconds, 1000 seconds). In another embodiment, information about the period at which a V2X device set as a passenger transmits a vehicle basic safety message may also be included in the vehicle basic safety message.

[0100] In another embodiment, a V2X device set as a companion passenger may stop transmitting and receiving vehicle-specific safety messages to reduce power consumption.

[0101] Both V2X devices set as drivers and V2X devices set as passengers can normally receive basic vehicle safety messages. However, V2X devices set as passengers may not perform V2X functions, such as risk assessment.

[0102] In addition, when a V2X device receives a vehicle basic safety message transmitted by a V2X device set as a companion passenger, it does not use it for risk judgment, and can display the device as a human-shaped companion passenger icon on the navigation map as shown in Fig. 11. Then, a false alarm indicating a possible vehicle collision as shown in Fig. 2 may not be generated.

[0103] According to one embodiment, if the ID set in the DriverTemporaryID field included in the received vehicle basic safety message is identical to the TemporaryID included in the vehicle basic safety message set as the driver, the V2X device may detect that the vehicle is a fellow passenger in the same vehicle and, without making a risk judgment, display the fellow passenger icon in the same location as the vehicle displayed by the vehicle basic safety message set as the driver.

[0104] In another embodiment, even if the received vehicle basic safety message does not include a DriverTemporaryID, if the difference between the location and direction included in the vehicle basic safety message and the location and direction included in the vehicle basic safety message set as the driver is within the first and second values ​​described above, the V2X device may recognize that the vehicle is in the same vehicle, and may display a companion passenger icon at the same location as the vehicle displayed by the vehicle basic safety message set as the driver without making a risk judgment.

[0105] In another embodiment, if the V2X device does not receive a vehicle basic safety message set to a passenger within a set transmission period (PeriodPassenger) after receiving a vehicle basic safety message set to a passenger at least once, or if a vehicle basic safety message with the corresponding temporary ID (TemporaryID) is set to a driver rather than a passenger, the V2X device may remove the passenger icon displayed on the navigation.

[0106] The configuration illustrated in Fig. 8 only illustrates the configuration related to the operation presented in this document, and the path guidance device may include other configurations for linking with navigation in addition to those illustrated in Fig. 8.

[0107] Meanwhile, a V2X device set as a co-passenger can automatically or manually change to a VRU mode, such as a pedestrian or cyclist, when exiting the vehicle, or can enter another vehicle and be set as a driver. Then, safety messages can be transmitted according to the conventional vehicle basic safety message transmission method or the conventional personal safety message transmission method. According to one embodiment, the safety message transmission cycle can be restored to the original 0.1 second, and the DriverTemporaryID included in the vehicle basic safety message set as a co-passenger is not used.

[0108] FIG. 12 is a conceptual diagram illustrating a V2X device according to various embodiments of the present disclosure.

[0109] Referring to FIG. 12, a V2X device (1200) may include a processor (1210), a communication device (1220), a storage device (1230), and an output device (1240). However, this is merely exemplary, and the embodiments of the present disclosure are not limited thereto. For example, at least one of the components of the V2X device (1200) described above may be omitted, or one or more other components may be added to the configuration of the V2X device (1200).

[0110] According to various embodiments, the communication device (1220) may perform data transmission and reception based on V2X communication. According to one embodiment, the communication device (1220) may use a dedicated short-range communications (DSRC) communication method or a commercial wireless communication method such as 5G or LTE for V2X communication.

[0111] According to various embodiments, the storage device (1230) may store various data used by at least one component of the V2X device (1200) (e.g., the processor (1210), the communication device (220), or the output device (1240). According to one embodiment, the storage device (1230) may include at least one of a non-volatile memory device and a volatile memory device.

[0112] According to various embodiments, the output device (1240) may generate output related to the operation of the V2X device (1200). According to one embodiment, the output device (1240) may be connected to a display that outputs visual information, an audio data output device that outputs auditory information, a haptic module that outputs tactile information, etc. For example, the display may include a liquid crystal display (LCD), a light emitting diode (LED) display, an organic light emitting diode (OLED) display, a micro electro mechanical system (MEMS) display, or electronic paper.

[0113] According to various embodiments, the processor (1210) may be configured to control the overall operation of the V2X device (1200). According to one embodiment, the processor (1210) may execute software (e.g., a V2X app program) stored in the storage device (1230) to control at least one component among components connected to the processor (1210) (e.g., a communication device (220), a storage device (1230), or an output device (1240)) and perform various data processing or calculations. For example, as at least a part of the data processing or calculation, the processor (1210) may store commands or data received from other components in the storage device (1230), process the commands or data stored in the storage device (1230), and store result data in the storage device (1230). The processor (1210) may be configured as a main processor and a secondary processor that can operate independently or together with the main processor.

[0114] According to one embodiment, the V2X device described above may be a smartphone having a V2X app installed that implements V2X functions.

[0115] As described above, the present invention allows, when a plurality of V2X devices exist in a vehicle, each V2X device to be distinguished as a V2X device for a driver and a V2X device for a passenger, and accordingly, to set different vehicle basic safety messages transmitted by each V2X device. In addition, the present invention proposes a method in which each V2X device can operate differently depending on whether the received vehicle basic safety message is for the driver or the passenger. Accordingly, wireless resources used for transmitting vehicle basic safety messages can be efficiently used, and each V2X device can reduce battery usage or prevent false alarms from occurring in safety functions.

[0116] While this document has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible. Therefore, the true scope of technical protection of this publication should be determined by the technical spirit of the appended claims.

Claims

1. In V2X devices, An output device that displays a screen; A communication device performing V2X communication; and Contains a processor, The above processor, Determine whether the above V2X device is present in the vehicle, When present in a vehicle, determine whether to act as a driver or as a passenger; If it is determined that the user is acting as a driver, it controls the transmission of the vehicle default safety message with the user type set to driver. If it is determined that the vehicle is operating as a companion passenger, it controls the transmission of the vehicle's default safety message with the user type set to companion passenger. V2X devices.

2. In paragraph 1, The above processor, Determine whether a second V2X device exists within the vehicle, If there is no second V2X device in the vehicle, the V2X device is set to operate as a driver, If a second V2X device exists in the vehicle, it sets whether to operate as a driver or a passenger manually based on user input based on the settings, or automatically sets whether to operate as a driver or a passenger based on the relative location with respect to the second V2X device. V2X devices.

3. In paragraph 2, The above processor, Calculate the distance between the V2X device and the surrounding V2X device based on the latitude and longitude information included in the vehicle basic safety message received from the surrounding V2X device and the latitude and longitude information of the V2X device, Calculate the angular difference between the heading information included in the vehicle basic safety message received from the above-mentioned surrounding V2X device and the heading direction of the V2X device, If there is a V2X device in which the distance is less than the first value and the angle difference is less than the second value, it is determined that the second V2X device is present in the vehicle. V2X devices.

4. In paragraph 2, The above processor, For manual setting, a screen including a driver icon or a companion passenger icon is automatically popped up on the output device, and based on the user's input selecting either the driver icon or the companion passenger icon, the device sets whether to act as a driver or a companion passenger. V2X devices.

5. In paragraph 3, The above processor, If the relative position of the second V2X device is located in front left, forward or left of the V2X device based on the direction of travel of the V2X device, the V2X device is set to operate as a companion passenger, Based on the direction of travel of the V2X device, if the second V2X device is located to the rear right of the V2X device, or only to the rear, or only to the right, the V2X device is set to operate as a driver. V2X devices.

6. In paragraph 1, The above processor, If it is determined that the user is acting as the above driver, control is given to transmit the vehicle basic safety message with the user type set to driver in the first cycle, If it is determined that the user is acting as the accompanying passenger, the vehicle basic safety message with the user type set as the accompanying passenger is controlled to be transmitted in a second cycle longer than the first cycle. V2X devices.

7. In paragraph 1, The above vehicle basic safety message is, Including the message number, identifier, elapsed time from the reference time, latitude value of vehicle location, longitude value of vehicle location, altitude value of vehicle location, accuracy of current vehicle location, transmission status of vehicle, speed of vehicle, direction of vehicle, steering wheel angle of vehicle, acceleration information for each axis, brake status of vehicle, size of vehicle, and user type indicating whether the transmission was made by the V2X device operating as the driver or the V2X device operating as the passenger. V2X devices.

8. In paragraph 7, The vehicle default safety message when the above user type is set to a passenger is: Further including identifier information of a V2X device acting as a driver within the same vehicle, V2X devices.

9. In paragraph 7, The vehicle default safety message when the above user type is set to the above passenger is: The above user type further includes transmission cycle information of the vehicle basic safety message set as the accompanying passenger. V2X devices.

10. In paragraph 1, The above processor, When the vehicle basic safety message is received with the above user type set to driver, a safety judgment is made, If the vehicle receives a basic safety message in which the above user type is set as a passenger, the above safety judgment is not performed. V2X devices.

11. In paragraph 1, The above processor, When the first vehicle basic safety message in which the user type is set to a driver is received, a vehicle icon is displayed at a point corresponding to a position obtained from the first vehicle basic safety message on the output device screen, When the second vehicle basic safety message is received in which the user type is set as a companion passenger, a person icon is displayed at a point corresponding to the location obtained from the second vehicle basic safety message on the output device screen. V2X devices.

12. In paragraph 6, The above processor, If the vehicle basic safety message in which the user type is set as a companion passenger is not received within the time according to the second cycle, the person icon representing the companion passenger displayed on the output device screen is deleted. V2X devices.

13. In paragraph 1, The above processor, When the V2X device gets off the vehicle, the V2X device is set as a VRU (Vulnerable Road User) and controlled to transmit a personal safety message. V2X devices.

14. In paragraph 8, The above processor, When the vehicle basic safety message is received in which the user type is set as a passenger, the identifier of the V2X device acting as the driver is acquired, The user type including the identifier of the V2X device acting as the driver is set as a basic safety message, and a person icon representing a companion passenger is displayed in combination with a vehicle icon displayed on the screen of the output device based on the basic safety message. V2X devices.

15. In the operation method of the V2X device, An action for determining whether the above V2X device exists within a vehicle; When present in a vehicle, the action to determine whether to act as a driver or as a passenger; If it is determined that the user is acting as a driver, the action of sending a vehicle default safety message with the user type set to driver; and If it is determined that the vehicle is acting as a companion passenger, it includes an action to transmit a vehicle default safety message with the user type set to companion passenger. method.

16. In paragraph 15, The action to determine whether to act as the above driver or as a passenger is: An operation for determining whether a second V2X device exists within the vehicle; An action to set the V2X device to act as a driver if there is no second V2X device in the vehicle; If a second V2X device exists in the vehicle, the operation includes manually setting whether to operate as a driver or as a companion passenger based on a user input based on a setting, or automatically setting whether to operate as a driver or as a companion passenger based on a relative location with respect to the second V2X device. method.

17. In paragraph 16, The operation of determining whether a second V2X device exists within the vehicle is as follows: An operation of calculating a distance between a V2X device and a surrounding V2X device based on latitude and longitude information included in a vehicle basic safety message received from a surrounding V2X device and latitude and longitude information of the V2X device; An operation of calculating an angular difference between the heading information included in the vehicle basic safety message received from the surrounding V2X device and the heading direction of the V2X device; and Including an operation of determining that a second V2X device exists within the vehicle if there is a V2X device where the distance is less than the first value and the angle difference is less than the second value. method.

18. In paragraph 16, The action of manually setting whether to operate as a driver or as a passenger based on the input of the above user is as follows: An action that automatically pops up a screen containing a driver icon or a passenger icon on the output device; and Including an action to set whether to act as a driver or a companion passenger based on an input of the user selecting either the driver icon or the companion passenger icon. method.

19. In paragraph 17, The operation of automatically setting whether to operate as a driver or as a companion passenger based on the relative position with the second V2X device is as follows: An operation for setting the V2X device to operate as a companion passenger when the relative position of the second V2X device is located in front left, forward or left of the V2X device based on the direction of travel of the V2X device; and An operation for setting the V2X device to operate as a driver when the second V2X device is located at the rear right of the V2X device, or only at the rear, or only at the right, based on the direction of travel of the V2X device. method.

20. In paragraph 15, The operation of transmitting a vehicle basic safety message in which the user type is set to a driver includes an operation of transmitting a vehicle basic safety message in which the user type is set to a driver in a first cycle, The operation of transmitting a vehicle basic safety message in which the user type is set to a companion passenger includes an operation of transmitting a vehicle basic safety message in which the user type is set to a companion passenger in a second cycle that is longer than the first cycle. method.

Images