WO2023210881A1 - Sdn 기반의 차량 내 네트워크 및 이의 제어 방법 - Google Patents
Sdn 기반의 차량 내 네트워크 및 이의 제어 방법 Download PDFInfo
- Publication number
- WO2023210881A1 WO2023210881A1 PCT/KR2022/013749 KR2022013749W WO2023210881A1 WO 2023210881 A1 WO2023210881 A1 WO 2023210881A1 KR 2022013749 W KR2022013749 W KR 2022013749W WO 2023210881 A1 WO2023210881 A1 WO 2023210881A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- node
- service
- bandwidth
- signal
- transmission path
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 196
- 238000004891 communication Methods 0.000 claims description 129
- 230000008859 change Effects 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000006855 networking Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 34
- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 9
- 238000013507 mapping Methods 0.000 description 8
- 239000000725 suspension Substances 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000004297 night vision Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000004438 eyesight Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
- H04L12/40182—Flexible bus arrangements involving redundancy by using a plurality of communication lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40143—Bus networks involving priority mechanisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
- H04L41/122—Discovery or management of network topologies of virtualised topologies, e.g. software-defined networks [SDN] or network function virtualisation [NFV]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/125—Shortest path evaluation based on throughput or bandwidth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/52—Queue scheduling by attributing bandwidth to queues
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/60—Software-defined switches
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/645—Splitting route computation layer and forwarding layer, e.g. routing according to path computational element [PCE] or based on OpenFlow functionality
- H04L45/655—Interaction between route computation entities and forwarding entities, e.g. for route determination or for flow table update
Definitions
- This disclosure relates to an in-vehicle network based on SDN (Software Defined Network) for transmitting heterogeneous protocol messages in a vehicle and a control method thereof.
- SDN Software Defined Network
- vehicle functions are becoming more diverse. These vehicle functions can be divided into convenience functions to promote driver convenience, and safety functions to promote driver and/or pedestrian safety.
- Convenience functions of a vehicle may be related to driver convenience, such as providing infotainment (information + entertainment) functions to the vehicle, supporting partial autonomous driving functions, or helping secure the driver's field of vision such as night vision or blind spots.
- driver convenience adaptive cruise control (ACC), smart parking assist system (SPAS), night vision (NV), and head up display (HUD) , around view monitor (AVM), and adaptive headlight system (AHS) functions.
- ACC adaptive cruise control
- SPAS smart parking assist system
- NV night vision
- HUD head up display
- AHS adaptive headlight system
- LDWS lane departure warning system
- LKAS lane keeping assist system
- AEB autonomous emergency braking
- Ethernet network systems are being applied to vehicles.
- legacy network systems such as CAN (Controller Area Network) systems are still widely used in vehicles, the Ethernet network system needs to coexist with the legacy network system. That is, conversion between CAN signals and Ethernet signals may be required within the vehicle.
- the present disclosure is proposed to solve the above-mentioned problems and various problems related thereto, and provides an SDN-based in-vehicle network and its The purpose is to provide a control method.
- the first node based on the priority of the Ethernet signal to be converted from a CAN (Controller Area Network) signal and transmitted from the first node to the second node, the first node and determining whether the bandwidth required for transmission of the Ethernet signal can be secured in a transmission path between second nodes; if the bandwidth can be secured, controlling the Ethernet signal to be transmitted to the second node along the transmission path; and
- a method of controlling an in-vehicle network comprising changing the transmission path to pass through a third node and controlling the Ethernet signal to be transmitted to a second node according to the changed transmission path. can be provided.
- the CAN signal may be transmitted between the first node, the second node, and the third node according to Software Defined Networking (SDN). That is, the network can be controlled for transmission of CAN signals.
- SDN Software Defined Networking
- the control method may further include transmitting, by the first node, a control request message to secure a transmission path for the Ethernet signal.
- the control request message may be transmitted when the CAN signal is not the target of service communication of SOME/IP (Scalable service-Oriented MiddlewareE over IP).
- SOME/IP Scalable service-Oriented MiddlewareE over IP
- the control method further includes, when the CAN signal is the target of the service communication, transmitting a search message for service provision by a first node, and transmitting a search message for finding a service by a second node; , Based on the service provision search message and the service search message, it may be determined whether the bandwidth required for the service communication can be secured.
- the service provision search message includes identification information of the service communication, a priority of the service communication, a data size of the service communication, and an identifier of the first node, and the service search search message includes the service communication of the service communication. It may include identification information and an identifier of the second node.
- the control method includes, when the bandwidth can be secured, transmitting a first parameter for securing the bandwidth to a first SDN switch of a first node, and the first SDN switch operates a plurality of devices according to the first parameter. It may further include securing a queue responsible for the bandwidth among the queues, and transmitting the Ethernet signal through the secured queue.
- the first parameter may be transmitted through the NETCONF (Network Configuration) protocol.
- NETCONF Network Configuration
- the control method includes transmitting a third parameter for changing the transmission path to a third SDN switch, and changing the third forwarding table to transmit the Ethernet signal to the second SDN switch according to the third parameter.
- the second parameter and the third parameter may be transmitted through the OpenFlow protocol.
- the first parameter, the second parameter, and the third parameter may be defined according to the Time Sensitive Network (TSN) standard.
- TSN Time Sensitive Network
- the network includes a host computer, and the host computer secures the bandwidth or changes the transmission path by transmitting a first parameter, a second parameter, and a third parameter, a first SDN switch, a second SDN switch, and a second SDN switch.
- 3 May include an SDN controller that controls the switch.
- the host computer monitors a plurality of service provision search messages and a plurality of service search messages that are multicast (or broadcast) on the network, and the service provision search message whose priority is equal to or higher than a certain level. And it may further include a priority manager for transmitting basic service communication information of the corresponding service search search message to the SDN controller.
- the SDN controller may further include a forwarding table DB that stores the forwarding table of the switch of each node, and a path calculator for calculating the changed transmission path with reference to the forwarding table DB.
- the SDN controller may further include a path bandwidth DB that stores information about the available bandwidth of the link handled by the switch of each node, and a bandwidth calculator for calculating the bandwidth of the changed transmission path with reference to the path bandwidth DB. You can.
- the SDN controller may further include a control manager that generates a first parameter, a second parameter, and a third parameter based on the operation results of the path calculator and the bandwidth calculator.
- the first node may include a first converter for conversion between the CAN signal and the Ethernet signal.
- the present disclosure includes a first node, a second node, a third node, and a host computer
- the first node is an Ethernet signal for transmitting a CAN (Controller Area Network) signal to the second node.
- the host computer determines whether the bandwidth required for transmission of the Ethernet signal can be secured in the transmission path between the first node and the second node of the Ethernet signal, based on the priority of the Ethernet signal, and If the bandwidth can be secured, the Ethernet signal is controlled to be transmitted to the second node along the transmission path. If the bandwidth cannot be secured, the transmission path is changed to pass through a third node, and the Ethernet signal is controlled to be transmitted to the second node according to the transmission path. Therefore, it is possible to provide an in-vehicle network that controls the Ethernet signal to be transmitted to the second node.
- 1 and 2 are exterior views of a vehicle related to one embodiment of the present disclosure.
- 3 and 4 are diagrams showing the interior of a vehicle related to an embodiment of the present disclosure.
- Figure 5 is a block diagram referenced in explaining a vehicle related to an embodiment of the present disclosure.
- FIG. 7 shows the packet structure of a control request message for securing a transmission path for an Ethernet signal according to an embodiment of the present disclosure.
- FIGS 8 and 9 show an example in which the transmission path of an Ethernet signal is changed according to the control request message of Figure 7.
- 10 and 11 illustrate the packet structure of a SOME/IP Service Discovery message for service provision (OfferService) according to an embodiment of the present disclosure.
- Figure 12 is a mapping table for conversion from a CAN signal to a service message according to an embodiment of the present disclosure.
- Figure 13 shows an example of transmission of a SOME/IP service discovery message in a hybrid network system for communication between a plurality of nodes of a vehicle according to the present disclosure.
- Figure 14 is a flowchart of service communication according to Figure 13.
- FIG. 15 illustrates transmission of a SOME/IP service discovery message in a hybrid network system for communication between a plurality of nodes of a vehicle according to the present disclosure.
- Figure 16 is a flow chart for generating the control request message of Figure 7 and the service provision search message of Figures 10 and 11.
- FIG 17 is a detailed block diagram of a host computer in a vehicle according to an embodiment of the present disclosure.
- 18 and 19 illustrate parameter transmission for changing bandwidth allocation and forwarding tables in a hybrid network system for communication between a plurality of nodes in a vehicle according to the present disclosure.
- FIG. 20 is a flowchart of bandwidth allocation and change of a forwarding table in a hybrid network system for communication between a plurality of nodes of a vehicle according to an embodiment of the present disclosure.
- the vehicle described in this disclosure may be a concept including a car and a motorcycle.
- vehicles will be described, focusing on automobiles.
- the vehicle described in this disclosure may be a concept that includes all internal combustion engine vehicles 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.
- FIGS. 1 and 2 are diagrams showing the exterior of a vehicle related to an embodiment of the present disclosure
- FIGS. 3 and 4 are diagrams showing the interior of a vehicle related to an embodiment of the present disclosure
- Figure 5 is a block diagram referenced in explaining a vehicle related to an embodiment of the present disclosure.
- the vehicle 100 may include wheels rotated by a power source and a steering input device 510 for controlling the moving direction of the vehicle 100.
- Vehicle 100 may be an autonomous vehicle.
- the vehicle 100 may be switched to autonomous driving mode or manual mode based on user input.
- the vehicle 100 may be switched from a manual mode to an autonomous driving mode, or from an autonomous driving mode to a manual mode, based on a user input received through the user interface device 200.
- the vehicle 100 may be switched to autonomous driving mode or manual mode based on driving situation information.
- Driving situation information may be generated based on object information provided by the object detection device 300.
- the vehicle 100 may be switched from manual mode to autonomous driving mode, or from autonomous driving mode to manual mode, based on driving situation information generated by the object detection device 300.
- the vehicle 100 may be switched from manual mode to autonomous driving mode, or from autonomous driving mode to manual mode, based on driving situation information received through the communication device 400.
- the vehicle 100 may be switched from manual mode to autonomous driving mode or from autonomous driving mode to manual mode based on information, data, and signals provided from an external device.
- the autonomous vehicle 100 may be driven based on the driving system 700 .
- the autonomous vehicle 100 may be driven based on information, data, or signals generated by the driving system 710, the parking system 740, and the parking system 750.
- the autonomous vehicle 100 may receive user input for driving through the driving control device 500. Based on user input received through the driving control device 500, the vehicle 100 may be driven.
- the overall length refers to the length from the front to the rear of the vehicle 100
- the overall width refers to the width of the vehicle 100
- the overall height refers to the length from the bottom of the wheels to the roof.
- the overall length direction (L) is the direction that is the standard for measuring the overall length of the vehicle 100
- the overall width direction (W) is the direction that is the standard for measuring the overall width of the vehicle 100
- the overall height direction (H) is the direction that is the standard for measuring the overall width of the vehicle 100. It may refer to the direction that serves as the standard for measuring the total height of (100).
- the vehicle 100 includes a user interface device 200, an object detection device 300, a communication device 400, a driving operation device 500, a vehicle driving device 600, and a navigation system. It may include (700), a navigation system 770, a sensing unit 120, a vehicle interface unit 130, a memory 140, a control unit 170, and a power supply unit 190.
- the vehicle 100 may further include other components in addition to the components described in this specification, or may not include some of the components described.
- the user interface device 200 is a device for communication between the vehicle 100 and the user.
- the user interface device 200 may receive user input and provide information generated by the vehicle 100 to the user.
- the vehicle 100 may implement User Interfaces (UI) or User Experience (UX) through the user interface device 200.
- UI User Interfaces
- UX User Experience
- the user interface device 200 may include an input unit 210, an internal camera 220, a biometric detection unit 230, an output unit 250, and a user interface processor 270. Depending on the embodiment, the user interface device 200 may further include other components in addition to the components described, or may not include some of the components described.
- the input unit 210 is used to receive information from the user, and the data collected by the input unit 210 can be analyzed by the user interface processor 270 and processed as a user's control command.
- the input unit 210 may be placed inside the vehicle.
- the input unit 210 is an area of the steering wheel, an area of the instrument panel, an area of the seat, an area of each pillar, and a door.
- the input unit 210 may include a voice input unit 211, a gesture input unit 212, a touch input unit 213, and a mechanical input unit 214.
- the voice input unit 211 can convert the user's voice input into an electrical signal.
- the converted electrical signal may be provided to the user interface processor 270 or the control unit 170.
- the voice input unit 211 may include one or more microphones.
- the gesture input unit 212 can convert the user's gesture input into an electrical signal.
- the converted electrical signal may be provided to the user interface processor 270 or the control unit 170.
- the gesture input unit 212 may include at least one of an infrared sensor and an image sensor for detecting a user's gesture input. Depending on the embodiment, the gesture input unit 212 may detect a user's 3D gesture input. To this end, the gesture input unit 212 may include a light output unit that outputs a plurality of infrared lights or a plurality of image sensors.
- the gesture input unit 212 may detect the user's 3D gesture input through a time of flight (TOF) method, a structured light method, or a disparity method.
- TOF time of flight
- the touch input unit 213 can convert the user's touch input into an electrical signal.
- the converted electrical signal may be provided to the user interface processor 270 or the control unit 170.
- the touch input unit 213 may include a touch sensor for detecting a user's touch input.
- the touch input unit 213 may be formed integrally with the display unit 251 to implement a touch screen. This touch screen can provide both an input interface and an output interface between the vehicle 100 and the user.
- the mechanical input unit 214 may include at least one of a button, a dome switch, a jog wheel, and a jog switch.
- the electrical signal generated by the mechanical input unit 214 may be provided to the user interface processor 270 or the control unit 170.
- the mechanical input unit 214 may be placed on a steering wheel, center fascia, center console, cockpit module, door, etc.
- the internal camera 220 can acquire images inside the vehicle.
- the user interface processor 270 may detect the user's state based on the image inside the vehicle.
- the user interface processor 270 may obtain user gaze information from an image inside the vehicle.
- the user interface processor 270 may detect a user's gesture from an image inside the vehicle.
- the biometric detection unit 230 can acquire the user's biometric information.
- the biometric detection unit 230 includes a sensor that can acquire the user's biometric information, and can obtain the user's fingerprint information, heart rate information, etc. using the sensor. Biometric information can be used for user authentication.
- the output unit 250 is for generating output related to vision, hearing, or tactile sensation.
- the output unit 250 may include at least one of a display unit 251, an audio output unit 252, and a haptic output unit 253.
- the display unit 251 can display graphic objects corresponding to various information.
- the display unit 251 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display. It may include at least one of a display, a 3D display, and an e-ink display.
- the display unit 251 and the touch input unit 213 may form a layered structure or be formed as one piece, thereby implementing a touch screen.
- the display unit 251 may be implemented as a Head Up Display (HUD).
- HUD Head Up Display
- the display unit 251 is equipped with a projection module and can output information through an image projected on a windshield or window.
- the display unit 251 may include a transparent display.
- the transparent display can be attached to a windshield or window.
- a transparent display can display a certain screen while having a certain transparency.
- transparent displays are transparent TFEL (Thin Film Elecroluminescent), transparent
- It may include at least one of an Organic Light-Emitting Diode (OLED), a transparent Liquid Crystal Display (LCD), a transmissive transparent display, and a transparent Light Emitting Diode (LED) display.
- OLED Organic Light-Emitting Diode
- LCD transparent Liquid Crystal Display
- LED transparent Light Emitting Diode
- the transparency of a transparent display can be adjusted.
- the user interface device 200 may include a plurality of display units 251a to 251g.
- the display unit 251 includes one area of the steering wheel, one area of the instrument panel (521a, 251b, 251e), one area of the seat (251d), one area of each pillar (251f), and one area of the door ( 251g), may be placed in an area of the center console, an area of the headlining, or an area of the sun visor, or may be implemented in an area of the windshield (251c) or an area of the window (251h).
- the audio output unit 252 converts the electrical signal provided from the user interface processor 270 or the control unit 170 into an audio signal and outputs it. To this end, the sound output unit 252 may include one or more speakers.
- the haptic output unit 253 generates a tactile output.
- the haptic output unit 253 may operate to vibrate the steering wheel, seat belt, and seats 110FL, 110FR, 110RL, and 110RR so that the user can perceive the output.
- the user interface processor 270 may control the overall operation of each unit of the user interface device 200.
- the user interface device 200 may include a plurality of user interface processors 270 or may not include the user interface processor 270.
- the user interface device 200 may be operated according to the control of the processor 170 or a processor of another device in the vehicle 100. .
- the user interface device 200 may be called a vehicle display device.
- the user interface device 200 may be operated under the control of the control unit 170.
- the object detection device 300 is a device for detecting objects located outside the vehicle 100.
- Objects may be various objects related to the operation of the vehicle 100. Objects may include lanes, other vehicles, pedestrians, two-wheeled vehicles, traffic signals, lights, roads, structures, speed bumps, landmarks, animals, etc.
- Objects can be classified into moving objects and fixed objects.
- a moving object may be a concept that includes other vehicles and pedestrians.
- a fixed object may be a concept including a traffic signal, road, or structure.
- the object detection device 300 may include a camera 310, radar 320, lidar 330, ultrasonic sensor 340, infrared sensor 350, and object detection processor 370.
- the object detection apparatus 300 may further include other components in addition to the components described, or may not include some of the components described.
- the camera 310 may be located at an appropriate location outside the vehicle to obtain images of the exterior of the vehicle.
- the camera 310 may be a mono camera, a stereo camera 310a, an Around View Monitoring (AVM) camera 310b, or a 360-degree camera.
- AVM Around View Monitoring
- camera 310 may be placed close to the front windshield, inside the vehicle, to obtain an image of the front of the vehicle.
- the camera 310 may be placed around the front bumper or radiator grill.
- the camera 310 may be placed close to the rear windshield in the interior of the vehicle to obtain an image of the rear of the vehicle.
- the camera 310 may be placed around the rear bumper, trunk, or tailgate.
- the camera 310 may be placed close to at least one of the side windows inside the vehicle to obtain an image of the side of the vehicle.
- the camera 310 may be placed around a side mirror, fender, or door.
- the camera 310 may provide the acquired image to the object detection processor 370.
- the radar 320 may include an electromagnetic wave transmitting unit and a receiving unit.
- the radar 320 may be implemented as a pulse radar or continuous wave radar based on the principle of transmitting radio waves.
- the radar 320 may be implemented in a frequency modulated continuous wave (FMCW) method or a frequency shift keyong (FSK) method depending on the signal waveform among the continuous wave radar methods.
- FMCW frequency modulated continuous wave
- FSK frequency shift keyong
- the radar 320 detects an object using electromagnetic waves based on a Time of Flight (TOF) method or a phase-shift method, and determines the location of the detected object, the distance to the detected object, and the relative speed. can be detected.
- TOF Time of Flight
- phase-shift method determines the location of the detected object, the distance to the detected object, and the relative speed. can be detected.
- the radar 320 may be placed at an appropriate location outside the vehicle to detect objects located in front, behind, or on the sides of the vehicle.
- LiDAR 330 may include a laser transmitter and a receiver. LiDAR 330 may be implemented in a time of flight (TOF) method or a phase-shift method.
- TOF time of flight
- LiDAR 330 may be implemented as a driven or non-driven type.
- the LIDAR 330 When implemented in a driven manner, the LIDAR 330 is rotated by a motor and can detect objects around the vehicle 100.
- the LIDAR 330 can detect objects located within a predetermined range based on the vehicle 100 through optical steering.
- the vehicle 100 may include a plurality of non-driven LIDARs 330.
- the LIDAR 330 detects an object via laser light based on a time of flight (TOF) method or a phase-shift method, and determines the location of the detected object, the distance to the detected object, and Relative speed can be detected.
- TOF time of flight
- phase-shift method determines the location of the detected object, the distance to the detected object, and Relative speed can be detected.
- Lidar 330 may be placed at an appropriate location outside the vehicle to detect objects located in front, behind, or on the sides of the vehicle.
- the ultrasonic sensor 340 may include an ultrasonic transmitter and a receiver.
- the ultrasonic sensor 340 can detect an object based on ultrasonic waves and detect the location of the detected object, the distance to the detected object, and the relative speed.
- the ultrasonic sensor 340 may be placed at an appropriate location outside the vehicle to detect objects located in front, behind, or on the sides of the vehicle.
- the infrared sensor 350 may include an infrared transmitter and a receiver.
- the infrared sensor 340 can detect an object based on infrared light, and detect the location of the detected object, the distance to the detected object, and the relative speed.
- the infrared sensor 350 may be placed at an appropriate location outside the vehicle to detect objects located in front, behind, or on the sides of the vehicle.
- the object detection processor 370 may control the overall operation of each unit of the object detection device 300.
- the object detection processor 370 can detect and track an object based on the acquired image.
- the object detection processor 370 can perform operations such as calculating a distance to an object and calculating a relative speed to an object through an image processing algorithm.
- the object detection processor 370 may detect and track an object based on a reflected electromagnetic wave in which the transmitted electromagnetic wave is reflected by the object and returned.
- the object detection processor 370 may perform operations such as calculating the distance to the object and calculating the relative speed to the object, based on electromagnetic waves.
- the object detection processor 370 may detect and track an object based on reflected laser light in which the transmitted laser is reflected by the object and returned.
- the object detection processor 370 may perform operations such as calculating the distance to the object and calculating the relative speed to the object based on the laser light.
- the object detection processor 370 may detect and track an object based on reflected ultrasonic waves, in which the transmitted ultrasonic waves are reflected by the object and returned.
- the object detection processor 370 may perform operations such as calculating the distance to the object and calculating the relative speed to the object, based on ultrasonic waves.
- the object detection apparatus 300 may include a plurality of object detection processors 370 or may not include the object detection processor 370.
- the camera 310, radar 320, lidar 330, ultrasonic sensor 340, and infrared sensor 350 may each individually include a processor.
- the object detection device 300 may be operated according to the control of the processor 170 or a processor of another device in the vehicle 100. .
- the object detection device 400 may be operated under the control of the control unit 170.
- the communication device 400 is a device for communicating with an external device.
- the external device may be another vehicle, mobile terminal, or server.
- the communication device 400 may include at least one of a transmitting antenna, a receiving antenna, a radio frequency (RF) circuit capable of implementing various communication protocols, and an RF element to perform communication.
- RF radio frequency
- the communication device 400 may include a short-range communication unit 410, a location information unit 420, a V2X communication unit 430, an optical communication unit 440, a broadcast transceiver 450, and a communication processor 470.
- the communication device 400 may further include other components in addition to the components described, or may not include some of the components described.
- the short-range communication unit 410 is a unit for short-range communication.
- the short-range communication unit 410 includes Bluetooth (Bluetooth), RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), and Wi-Fi (Wireless).
- Bluetooth Bluetooth
- RFID Radio Frequency Identification
- IrDA Infrared Data Association
- UWB Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- ZigBee Ultra Wideband
- the short-range communication unit 410 may form a wireless area network and perform short-range communication between the vehicle 100 and at least one external device.
- the location information unit 420 is a unit for acquiring location information of the vehicle 100.
- the location information unit 420 may include a Global Positioning System (GPS) module or a Differential Global Positioning System (DGPS) module.
- GPS Global Positioning System
- DGPS Differential Global Positioning System
- the V2X communication unit 430 is a unit for performing wireless communication with a server (V2I: Vehicle to Infra), another vehicle (V2V: Vehicle to Vehicle), or a pedestrian (V2P: Vehicle to Pedestrian).
- the V2X communication unit 430 may include an RF circuit capable of implementing communication with infrastructure (V2I), communication between vehicles (V2V), and communication with pedestrians (V2P) protocols.
- the optical communication unit 440 is a unit for communicating with an external device through light.
- the optical communication unit 440 may include an optical transmitter that converts an electrical signal into an optical signal and transmits it to the outside, and an optical receiver that converts the received optical signal into an electrical signal.
- the light emitting unit may be formed to be integrated with the lamp included in the vehicle 100.
- the communication processor 470 may control the overall operation of each unit of the communication device 400.
- the communication device 400 may include a plurality of communication processors 470 or may not include the communication processor 470.
- the communication device 400 may be operated under the control of the processor 170 or a processor of another device in the vehicle 100.
- the communication device 400 may implement a vehicle display device together with the user interface device 200.
- the vehicle display device may be called a telematics device or an AVN (Audio Video Navigation) device.
- the communication device 400 may be operated under the control of the control unit 170.
- the driving control device 500 is a device that receives user input for driving.
- the vehicle 100 may be operated based on signals provided by the driving control device 500.
- the driving control device 500 may include a steering input device 510, an acceleration input device 530, and a brake input device 570.
- the steering input device 510 may receive an input of the direction of travel of the vehicle 100 from the user.
- the steering input device 510 is preferably formed in a wheel shape to enable steering input by rotation.
- the steering input device may be formed in the form of a touch screen, touch pad, or button.
- the driving control device 500 may be operated under the control of the control unit 170.
- the vehicle driving device 600 is a device that electrically controls the operation of various devices in the vehicle 100.
- the vehicle driving device 600 may include a power train driving unit 610, a chassis driving unit 620, a door/window driving unit 630, a safety device driving unit 640, a lamp driving unit 650, and an air conditioning driving unit 660. You can.
- the vehicle driving device 600 may further include other components in addition to the components described, or may not include some of the components described.
- the power train driving unit 610 may include a power source driving unit 611 and a transmission driving unit 612.
- the power source driver 610 may perform electronic control of the engine. Thereby, the output torque of the engine, etc. can be controlled.
- the power source driving unit 611 can adjust the engine output torque according to the control of the control unit 170.
- the transmission drive unit 612 can control the transmission.
- the transmission drive unit 612 can adjust the state of the transmission.
- the transmission drive unit 612 can adjust the state of the transmission to forward (D), reverse (R), neutral (N), or park (P).
- the transmission drive unit 612 can adjust the gear engagement state in the forward (D) state.
- the chassis driver 620 can control the operation of the chassis device.
- the chassis drive unit 620 may include a steering drive unit 621, a brake drive unit 622, and a suspension drive unit 623.
- the steering drive unit 621 may perform electronic control of the steering apparatus within the vehicle 100.
- the steering drive unit 621 can change the moving direction of the vehicle.
- the brake driver 622 may perform electronic control of the brake apparatus within 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.
- the brake driver 622 can individually control each of the plurality of brakes.
- the brake driver 622 can control braking force applied to a plurality of wheels differently.
- the suspension drive unit 623 may perform electronic control of the suspension apparatus within the vehicle 100. For example, when the road surface is curved, the suspension drive unit 623 may control the suspension device to reduce vibration of the vehicle 100. Meanwhile, the suspension driving unit 623 can individually control each of the plurality of suspensions.
- the door/window driving unit 630 may perform electronic control of the door apparatus or window apparatus within the vehicle 100.
- the door/window driving unit 630 may include a door driving unit 631 and a window driving unit 632.
- the door driver 631 can control the door device.
- the door driver 631 can control the opening and closing of a plurality of doors included in the vehicle 100.
- the door driver 631 can control the opening or closing of the trunk or tail gate.
- the door driver 631 can control the opening or closing of the sunroof.
- the window driver 632 may perform electronic control of a window apparatus. It is possible to control the opening or closing of a plurality of windows included in the vehicle 100.
- the safety device driver 640 may perform electronic control of various safety apparatuses in the vehicle 100.
- the safety device driver 640 may include an airbag driver 641, a seat belt driver 642, and a pedestrian protection device driver 643.
- the airbag driving unit 641 may perform electronic control of the airbag apparatus within the vehicle 100.
- the airbag driving unit 641 may control the airbag to be deployed when danger is detected.
- the seat belt drive unit 642 may perform electronic control of the seat belt appartus in the vehicle 100. For example, when danger is detected, the seat belt drive unit 642 can control the passenger to be fixed to the seat (110FL, 110FR, 110RL, 110RR) using the seat belt.
- the pedestrian protection device driving unit 643 may perform electronic control of the hood lift and pedestrian airbag. For example, the pedestrian protection device driving unit 643 may control the hood to lift up and the pedestrian airbag to deploy when a collision with a pedestrian is detected.
- the lamp driver 650 may perform electronic control of various lamp apparatuses in the vehicle 100.
- the air conditioning driver 660 may perform electronic control of the air conditioning device (air cinditioner) in the vehicle 100. For example, when the temperature inside the vehicle is high, the air conditioning driver 660 can control the air conditioning device to operate so that cold air is supplied into the vehicle interior.
- the air conditioning driver 660 can control the air conditioning device to operate so that cold air is supplied into the vehicle interior.
- the vehicle driving device 600 may include a vehicle driving processor. Each unit of the vehicle driving device 600 may individually include a processor.
- the vehicle driving device 600 may be operated under the control of the control unit 170.
- the operation system 700 is a system that controls various operations of the vehicle 100.
- the navigation system 700 may be operated in autonomous driving mode.
- the driving system 700 may include a driving system 710, a parking system 740, and a parking system 750.
- the navigation system 700 may further include other components in addition to the components described, or may not include some of the components described.
- the navigation system 700 may include a navigation processor. Each unit of the navigation system 700 may individually include a processor.
- the navigation system 700 when the navigation system 700 is implemented in software, it may be a sub-concept of the control unit 170.
- the navigation system 700 includes at least one of the user interface device 200, the object detection device 300, the communication device 400, the vehicle driving device 600, and the control unit 170. It may be an inclusive concept.
- the driving system 710 can drive the vehicle 100.
- the driving system 710 may receive navigation information from the navigation system 770 and provide a control signal to the vehicle driving device 600 to drive the vehicle 100.
- the driving system 710 may receive object information from the object detection device 300 and provide a control signal to the vehicle driving device 600 to drive the vehicle 100.
- the driving system 710 may receive a signal from an external device through the communication device 400 and provide a control signal to the vehicle driving device 600 to drive the vehicle 100.
- the parking system 740 can remove the vehicle 100.
- the parking system 740 may receive navigation information from the navigation system 770 and provide a control signal to the vehicle driving device 600 to remove the vehicle 100.
- the parking system 740 may receive object information from the object detection device 300 and provide a control signal to the vehicle driving device 600 to remove the vehicle 100.
- the parking system 740 may receive a signal from an external device through the communication device 400 and provide a control signal to the vehicle driving device 600 to remove the vehicle 100.
- the parking system 750 can park the vehicle 100.
- the parking system 750 may receive navigation information from the navigation system 770 and provide a control signal to the vehicle driving device 600 to park the vehicle 100.
- the parking system 750 may receive object information from the object detection device 300 and provide a control signal to the vehicle driving device 600 to park the vehicle 100.
- the parking system 750 may park the vehicle 100 by receiving a signal from an external device through the communication device 400 and providing a control signal to the vehicle driving device 600.
- the navigation system 770 may provide navigation information.
- Navigation information may include at least one of map information, set destination information, route information according to the set destination, information on various objects on the route, lane information, and current location information of the vehicle.
- Navigation system 770 may include memory and a navigation processor.
- the memory can store navigation information.
- the navigation processor may control the operation of the navigation system 770.
- the navigation system 770 may receive information from an external device through the communication device 400 and update pre-stored information.
- the navigation system 770 may be classified as a sub-component of the user interface device 200.
- the sensing unit 120 includes vehicle posture information, vehicle collision information, vehicle direction information, vehicle location information (GPS information), vehicle angle information, vehicle speed information, vehicle acceleration information, vehicle tilt information, vehicle forward/backward information, and battery. Obtain sensing signals for information, fuel information, tire information, vehicle lamp information, vehicle interior temperature information, vehicle interior humidity information, steering wheel rotation angle, vehicle exterior illumination, pressure applied to the accelerator pedal, pressure applied to the brake pedal, etc. can do.
- the sensing unit 120 includes an accelerator pedal sensor, a pressure sensor, an engine speed sensor, an air flow sensor (AFS), an intake temperature sensor (ATS), a water temperature sensor (WTS), and a throttle position sensor. (TPS), TDC sensor, crank angle sensor (CAS), etc. may be further included.
- the vehicle interface unit 130 may serve as a passageway for various types of external devices connected to the vehicle 100.
- the vehicle interface unit 130 may have a port that can be connected to a mobile terminal, and can be connected to a mobile terminal through the port. In this case, the vehicle interface unit 130 can exchange data with the mobile terminal.
- the vehicle interface unit 130 may serve as a conduit for supplying electrical energy to a connected mobile terminal.
- the vehicle interface unit 130 may provide electrical energy supplied from the power supply unit 190 to the mobile terminal under the control of the control unit 170. .
- the memory 140 is electrically connected to the control unit 170.
- the memory 140 can store basic data for the unit, control data for controlling the operation of the unit, and input/output data.
- the memory 140 may be a variety of storage devices such as ROM, RAM, EPROM, flash drive, hard drive, etc.
- the memory 140 may store various data for the overall operation of the vehicle 100, such as programs for processing or controlling the control unit 170.
- the memory 140 may be formed integrally with the control unit 170 or may be implemented as a sub-component of the control unit 170.
- the control unit 170 may control the overall operation of each unit within the vehicle 100.
- the control unit 170 may be named ECU (Electronic Control Unit).
- ECU Electronic Control Unit
- the various processors described above may also be named ECU.
- the power supply unit 190 may supply power required for the operation of each component under the control of the control unit 170.
- the power supply unit 190 may receive power from a battery inside the vehicle.
- processors and control units 170 included in the vehicle 100 include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and FPGAs ( It may be implemented using at least one of field programmable gate arrays, processors, controllers, micro-controllers, microprocessors, and other electrical units for performing functions.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- processors controllers, micro-controllers, microprocessors, and other electrical units for performing functions.
- a plurality of ECUs may be installed to control each component within the vehicle 100.
- Each ECU can perform the function of calculating data recognized from sensors and giving commands to the actuator.
- a plurality of ECUs in the vehicle 100 were able to communicate with each other through a legacy network system such as a CAN (Controller Area Network) system without a host computer.
- a legacy network system such as a CAN (Controller Area Network) system without a host computer.
- the vehicle 100 communicates in real time with other vehicles, traffic and communication infrastructure, pedestrian terminals, etc. through wireless LAN (WLAN) and/or mobile communication (e.g., LTE, 5G, etc.) to provide driver convenience and transportation. It is evolving into a connected car to help with safety and provide various Internet services.
- WLAN wireless LAN
- mobile communication e.g., LTE, 5G, etc.
- the vehicle 100 can also be understood as a large Internet of Things (IoT) device in the sense that the connected car itself becomes a communication device.
- IoT Internet of Things
- Ethernet network system As vehicle E/E architecture evolves in order to become more sophisticated as a connected car, an Ethernet network system is being introduced to the vehicle 100.
- legacy network systems such as CAN (Controller Area Network) systems are still widely used in vehicles, the Ethernet network system needs to coexist with the legacy network system.
- FIG. 6 is a block diagram of a hybrid network system for communication between a plurality of nodes of a vehicle according to the present disclosure.
- the legacy network system is a CAN system and the next-generation network system is an Ethernet network system.
- the next-generation network system is an Ethernet network system.
- this is merely an example, and of course, other network systems may be considered for the legacy network system and the next-generation network system.
- the vehicle 100 may include a plurality of ECUs.
- the vehicle 100 is illustrated as including four ECUs, namely ECU1 (1010), ECU2 (1020), ECU3 (1030), and ECU4 (1040).
- ECU1 1010
- ECU2 1020
- ECU3 1030
- ECU4 1040
- this is just an example, and of course the vehicle 100 may include more ECUs.
- Each ECU (1010, 1020, 1030, 1040) has a CAN2ETH converter (1011, 1021, 1031, 1041) for converting CAN signals to Ethernet signals, and an SDN switch (1012, 1012) for SDN (Software Defined Networking) communication. 1022, 1032, 1042).
- the ECU1 (1010) includes CAN2ETH converter 1 (1011) and SDN switch 1 (1012)
- the ECU2 (1020) includes CAN2ETH converter 2 (1021) and SDN switch 2 (1022)
- the ECU3 (1030) includes CAN2ETH converter 3 (1031) and SDN switch 3 (1032)
- the ECU4 (1040) may include CAN2ETH converter 4 (1041) and SDN switch 4 (1042).
- Each ECU (1010, 1020, 1030, 1040) includes at least one sensor (1111, 1121, 1131, 1141) and/or at least one actuator (e.g., the aforementioned driving unit) (1112, 1122, 1132, 1142). You can control it.
- the ECU1 (1010) controls sensor 1 (1111) and actuator 1 (1112)
- the ECU2 (1020) controls sensor 2 (1121) and actuator 2 (1122)
- the ECU3 (1030) It is illustrated that controls sensor 3 (1131) and actuator 3 (1132), and the ECU4 (1040) controls sensor 4 (1141) and actuator 4 (1142).
- each ECU may be configured to control more or fewer sensors and/or actuators.
- the vehicle may include a host computer 1050 for managing electrical/electronic control of the vehicle 100, such as controlling the plurality of ECUs.
- the host computer 1050 may be a high-performance computer (HPC) or a general purpose computer.
- the host computer 1050 may include an SDN switch 5 (1052), an SDN controller 1053, a priority manager 1054, and an application 1055.
- Each of the ECUs 1010, 1020, 1030, and 1040 and the host computer 1050 can be understood as a node of this network system.
- the network system is illustrated as being composed of five nodes, but of course, it may be composed of fewer or more nodes.
- the ECU1 (1010) is connected to the ECU2 (1020) through an L1-2 link, connected to the ECU3 (1030) through an L1-3 link, and connected to the host computer (1050) through an L1-5 link. You can.
- the ECU2 (1020) may be connected to the ECU4 (1040) through an L2-4 link and with the host computer 1050 through an L2-5 link.
- the ECU3 (1030) may be connected to the ECU4 (1040) through an L3-4 link and with the host computer 1050 through an L3-5 link.
- the ECU4 (1040) can be connected to the host computer (1050) through an L4-5 link.
- the present network system is configured so as not to have any one of these links, or the other link (for example, a link connecting the ECU1 (1010) and the ECU4 (1040) and/or the ECU2 (1020) and the Of course, the link connecting ECU3 (1030) may be further defined.
- ECU1 (1010) The operation of the CAN2ETH converter (1011, 1021, 1031, 1041) and the SDN switch (1012, 1022, 1032, 1042) in each ECU (1010, 1020, 1030, 1040) is explained using ECU1 (1010) as an example. would. Of course, the description of ECU1 (1010) can be applied to other ECUs.
- the CAN2ETH converter 1 (1011) can receive a signal sensed by the sensor 1 (1111) controlled by the ECU1 (1010).
- the signal sensed by Sensor 1 (1111) can be transmitted to ECU1 (1010) as a CAN sensing signal based on the CAN system.
- the CAN2ETH converter 1 (1011) can convert the CAN sensing signal (or message) into an Ethernet sensing signal (or message).
- the SDN switch 1 (1012) is for the ECU1 (1010) to communicate an Ethernet signal with another ECU or a host computer (i.e., another node).
- the Ethernet sensing signal can be transmitted to the SDN switch of another node. and can receive Ethernet signals from other nodes.
- the destination Internet Protocol (IP)/Media Access Control (MAC) address of the Ethernet signal may be predefined in the SDN switch 1 (1012) depending on the type (and/or identifier) of the Ethernet signal.
- the SDN switch 1 (1012) organizes information about the transmission path corresponding to each type of Ethernet signal (i.e., matching between the source IP/MAC address and the destination IP/MAC address or between the IP/MAC address and the output port).
- the table can be saved. In this disclosure, the table may be referred to as a “forward table.”
- Ethernet signals can be communicated between one ECU and another ECU or between one ECU and a host computer through an SDN switch.
- the SDN Software Defined Networking
- changing the bandwidth may be understood as securing the bandwidth necessary for communication.
- the SDN switch 5 (1052) is for the host computer 1050 to communicate Ethernet signals with other ECUs. Likewise, the transmission path of the Ethernet signal is predefined in the SDN switch 5 (1052) according to the type of the Ethernet signal. Like SDN Switch 1 (1012), SDN Switch 5 (1052) can also store a forwarding table that organizes transmission paths corresponding to each type of Ethernet signal.
- the SDN controller 1053 is responsible for the control plane within the vehicle 100, and the transmission path of the Ethernet signal in the data plane (i.e., at least one of the path pattern and bandwidth of the transmission path) can be changed depending on the communication environment within the vehicle 100, etc.
- the priority manager 1054 monitors signals (or messages) for service communication multicast within the vehicle 100 and transmits signals with a certain priority or higher among the monitored signals to the SDN controller 1053. , This is to enable the SDN controller 1053 to secure or change a transmission path for an Ethernet signal related to service communication corresponding to a signal with a certain priority or higher.
- the application 1055 may be an application that supports operations and/or calculations of the SDN controller 1053 and the priority manager 1054.
- the SDN controller 1053 and the priority manager 1054 may utilize the application 1055 for their own operations and/or calculations.
- Figure 7 shows the packet structure of a control request message for securing a transmission path for an Ethernet signal according to an embodiment of the present disclosure
- Figures 8 and 9 show the control request of Figure 7
- An example is shown in which the transmission path of an Ethernet signal changes depending on the message.
- the ECU2 (1020) When the ECU2 (1020) receives a CAN sensing signal from, for example, the sensor 2 (1121), the CAN2EHT converter 2 (1021) of the ECU2 (1020) converts the CAN sensing signal into an Ethernet sensing signal and transmits the CAN sensing signal to the ECU2 (1022). ) of the SDN switch 2 (1022), and the SDN switch 2 (1022) refers to its own forwarding table (hereinafter referred to as “forwarding table 2”) and sees the converted Ethernet sensing signal. It can be transmitted to other nodes within the network system. Let's assume that the other node receiving the Ethernet sensing signal is the ECU4 (1040). Also, let us assume that the transmission path of the Ethernet sensing signal predefined in the transmission table 2 is an L2-4 link (that is, the transmission path consists of the L2-4 link).
- the latency of the Ethernet sensing signal is determined according to the current data traffic situation of the L2-4 link. may occur. Even if any physical problem occurs in the L2-4 link, the ECU4 (1040) may not be able to receive the Ethernet sensing signal at all.
- the host computer (1050) sends a control request message to secure a transmission path for the Ethernet sensing signal. It can be sent to .
- control request message may be composed of an Ethernet packet part (A) and a payload packet part (B).
- the Ethernet packet part (A) is intended to comply with standards for TCP/IP-based communication between nodes, and includes an Ethernet packet header (ETH), a VLAN tag header (VLAN Tag) for additional information for network virtualization, It may include an IP header (IP) and a TCP header (TCP).
- ETH Ethernet packet header
- VLAN Tag VLAN tag header
- IP IP header
- TCP TCP header
- the payload packet part (B) includes a message type (Msg. Type) indicating the type of the CAN sensing signal (or the Ethernet sensing signal), an identifier (CAN ID) of the CAN sensing signal (or the Ethernet signal), Priority of the CAN sensing signal (or the Ethernet sensing signal), data size of the CAN sensing signal (or the Ethernet sensing signal), source IP information (Src. IP) of the Ethernet sensing signal ( That is, source identifier), and destination IP information (Des. IP) of the Ethernet sensing signal (i.e., destination identifier).
- the message type is illustrated as a network control request (NET_CTRL_REQ).
- control request message may be transmitted to the SDN controller 1053 of the host computer 1050 along the L2-5 link.
- the control request message may be generated and transmitted only when the priority of the Ethernet sensing signal is above a certain level, or it may be generated and transmitted regardless of the priority.
- the SDN controller 1053 can determine the priority of the Ethernet sensing signal that the ECU2 (1020) intends to transmit from the control request message.
- the SDN controller 1053 uses the information in the control request message to set the scheduled transmission path of the Ethernet sensing signal to the L2-4 link, as shown in FIG. 9. It can be seen that it is (transmission path 1). That is, the SDN controller 1053 can determine that the path pattern of the scheduled transmission path consists of the L2-4 link. The SDN controller 1053 can also determine the data size of the Ethernet sensing signal from the control request message.
- the SDN controller 1053 can check whether the bandwidth required to transmit the Ethernet sensing signal in the L2-4 link is available.
- the required bandwidth may vary depending on the data size of the Ethernet sensing signal. For example, the required bandwidth may be proportional to the data size of the Ethernet sensing signal.
- the required bandwidth may be the same regardless of the priority or may vary depending on the priority. If the required bandwidth is different depending on the priority, the required bandwidth may be wide if the priority is high and narrow if the priority is low. Alternatively, if the required bandwidth is different depending on the priority, the required bandwidth may be narrow if the priority is high and wide if the priority is low.
- the SDN controller 1053 can maintain the scheduled transmission path (transmission path 1) of the Ethernet sensing signal, that is, the L2-4 link. That is, the pattern of the transmission path can be maintained consisting of the L2-4 link. In addition, the SDN controller 1053 can secure the bandwidth necessary for transmission of the Ethernet sensing signal in the L2-4 path.
- the Ethernet sensing signal can be transmitted according to the predetermined transmission path.
- the SDN controller 1053 maintains the scheduled transmission path (transmission path 1), but blocks other communication traffic with lower priority than the Ethernet sensing signal to prevent the Ethernet sensing signal. Bandwidth for transmission can be secured.
- the Ethernet sensing signal can be transmitted according to the predetermined transmission path.
- the bandwidth required for transmission of the Ethernet sensing signal on the scheduled transmission path may not be secured.
- a physical problem may occur in the scheduled transmission path and the scheduled transmission path may be blocked, making Ethernet communication through it completely impossible.
- This case can also be understood as a type of case in which the bandwidth required for transmission of the Ethernet sensing signal cannot be secured.
- the SDN controller 1053 secures the bandwidth for transmission of the Ethernet sensing signal through the scheduled transmission path (i.e., path pattern of the transmission path) (transmission path 1). You can change to another available transmission path (transmission path 2).
- FIG. 9 illustrates that the other transmission path (transmission path 2) (i.e., path pattern) consists of the L2-5 link and the S4-5 link.
- transmission path 2 i.e., path pattern
- the other transmission path may consist of the L1-2 link, the L1-3 link, and the L3-4 link.
- the SDN controller 1053 switches the SDN switch 2 (1022) involved in the transmission path 2 for transmission of the Ethernet sensing signal.
- the SDN switch 2 (1022) and the SDN switch 5 (1052) can be controlled to change the forwarding table 2 of and the forwarding table 5 of the SDN switch 5 (1052).
- the transmission table 2 can be changed so that when the SDN switch 2 (1022) receives the Ethernet sensing signal from the CAN2ETH converter 2 (1021), it transmits it to the SDN switch 5 (1052).
- the forwarding table 5 can be changed so that when the SDN switch 5 (1052) receives the Ethernet sensing signal from the SDN switch 2 (1022), it transmits it to the SDN switch 4 (1042).
- the Ethernet sensing signal can be transmitted through the other transmission path.
- 10 and 11 illustrate the packet structure of a SOME/IP Service Discovery message for service provision (OfferService) according to an embodiment of the present disclosure.
- the service search message for service provision includes an Ethernet packet part (A) and a data packet part (hereinafter referred to as "SOME/IP SD for service provision") for searching a service according to the SOME/IP standard. It may be composed of (referred to as “part”) (C).
- the Ethernet packet part (A) is as described above.
- the SOME/IP SD part (C) for service provision will be explained with further reference to FIG. 11.
- the service provision SOME/IP SD part (C) includes service identifier information (Service ID) (C1) according to the SOME/IP standard and the service search message. It may include the identifier (Client ID) (C2) of the sending node and the option array (C3).
- the option array (C3) is a data field in which the SOME/IP standard allows users to specify different uses and configurations according to their needs, and additional information necessary to secure the transmission path of the service signal can be entered here. there is.
- the additional information may include priority information of the service to be provided through the service search message and size information of data provided through the service.
- FIG. 12 illustrates a case where a CAN signal related to the radar data service (RadarData) is converted into a service message.
- RadData radar data service
- the CAN signal may not have priority information (C3-1) of the radar data service included in the option array (C3) of the service search message. Therefore, when the CAN signal is converted into the service message, priority information (C3-1) of the radar data service needs to be added like the conversion mapping table.
- FIG. 12 illustrates a case where a CAN signal related to the weather data service (ClimateData) is converted into a service message.
- the CAN signal may not have priority information (C3-1) of the radar data service included in the option array (C3) of the service search message. Therefore, when the CAN signal is converted into the service message, priority information (C3-1) of the weather data service needs to be added like the conversion mapping table.
- the mapping table for conversion may be implemented as, for example, a JSON (JavaScript Object Notation) file, and may be stored in the CAN2ETH converter (1011, 1021, 1031, 1041) of each ECU (1010, 1020, 1030, 1040). .
- the CAN2ETH converter (1011, 1021, 1031, 1041) parses the JSON file, and when receiving a CAN signal corresponding to the JSON file, converts the CAN signal to a service message to match the JSON file. It can be converted to . At this time, the priority information may be added to the converted service message.
- FIG. 13 illustrates transmission of a SOME/IP service discovery message in a hybrid network system for communication between a plurality of nodes of a vehicle according to the present disclosure.
- the ECU1 (1010) multicasts a service search message (hereinafter referred to as a first service provision search message) for offering the weather data service, and the ECU2 (1020) provides the radar data service.
- a service search message for provision hereinafter referred to as a second service provision search message
- the host computer 1050 is multicasting a service search message (hereinafter referred to as a second service search search message) to find the radar data service.
- the SDN switch 5 (1050) of the host computer (1050) can receive all service discovery messages multicast in the network system and forward them to the priority manager (1054).
- the SDN switch 5 (1050) can transmit the multicast second service provision search message (PM2) to the priority manager (1054), as shown in FIG. 13.
- the SDN switch 5 (1050) may receive the multicast search message for finding the second service and the search message for providing the first service and transmit them to the priority manager (1054).
- the priority manager 1054 may first look at the priority information in the search message for providing the second service and determine that the priority of the search message for providing the second service (PM2) is higher than a certain priority. In this case, the priority manager 1054 may store the second service provision search message (PM2) having a priority higher than the certain priority. In addition, the priority manager 1054 receives the second service identification information from the second service provision search message (PM2), the node identifier that sent the message (i.e., the second service provider identifier, and in this example, the ECU2 ( 1020) identifier), and data size information of the second service can be identified.
- the priority manager 1054 receives the second service identification information from the second service search message, the node identifier that sent the message (i.e., the second service consumer identifier, and in this example, the host computer 1050) identifier) can be identified.
- the priority manager 1054 determines the search message for providing the second service and the search message for finding the second service. It can be seen that they correspond to each other. Accordingly, the priority manager 1054 receives i) second service identification information, ii) second service priority information, and iii) second service provider identifier from the search message for providing the second service and the search message for finding the second service. (e.g., provider IP information), iv) second service consumer identifier (e.g., consumer IP information), and v) second service data size (hereinafter, “service communication basic information (BI)”). It can be extracted and transmitted to the SDN controller (1053).
- provider IP information e.g., provider IP information
- second service consumer identifier e.g., consumer IP information
- BI second service communication basic information
- the SDN controller 1053 can check whether the bandwidth required for second service communication is available on the scheduled transmission path.
- the required bandwidth may vary depending on the data size of the second service communication. For example, the required bandwidth may be proportional to the data size of the second service communication.
- the bandwidth required for service communication of the same data size may be the same regardless of priority or may vary depending on priority. If the required bandwidth is different depending on the priority, the required bandwidth may be wide if the priority is high and narrow if the priority is low. Alternatively, if the required bandwidth is different depending on the priority, the required bandwidth may be narrow if the priority is high and wide if the priority is low.
- the SDN controller 1053 can maintain the scheduled transmission path for second service communication.
- the second service communication can be conducted according to the predetermined transmission path.
- the SDN controller 1053 maintains the scheduled transmission path (i.e., path pattern), but blocks other communication traffic with lower priority than the second service communication to enable second service communication. Bandwidth can be reserved for .
- the second service communication can be conducted according to the predetermined transmission path.
- the SDN controller 1053 may change the scheduled transmission path to another transmission path that can secure bandwidth for second service communication. That is, the path pattern of the scheduled transmission path may be changed.
- the SDN controller 1053 can change the forwarding table of the SDN switch of the node involved in the changed transmission path to match the changed transmission path.
- the second service communication can be transmitted through the changed other transmission path.
- Figure 14 is a flowchart of service communication according to Figure 13.
- a second service consumer 1055 such as an application of the host computer, may transmit a search message for finding a second service to the SDN switches 1022 and 1052 [S141].
- the SDN switches 1022 and 1052 may mirror the search message for finding the second service to the priority manager 1054 [S142] and multicast it for the second service provider 1021 [S143].
- the SDN switches 1022 and 1052 receive the search message for providing the second service multicast by the second service provider 1021 [S144], mirror it to the priority manager 1054 [S145], and Multicasting can be performed for the service provider 1055 [S146].
- second service communication can be performed between the second service provider 1021 and the second service consumer 1055 through the transmission path secured by the SDN controller 1054.
- FIG. 15 illustrates transmission of a SOME/IP service discovery message in a hybrid network system for communication between a plurality of nodes of a vehicle according to the present disclosure.
- the ECU1 (1010) multicasts a service search message (hereinafter, a first service provision search message) for offering the weather data service
- a service search message for providing the radar data service hereinafter referred to as a second service provision search message
- the host computer 1050 is multicasting a service search message (hereinafter referred to as a first service search search message) to find the weather data service.
- the SDN switch 5 (1050) of the host computer (1050) can receive all service discovery messages multicast in the network system and forward them to the priority manager (1054).
- the SDN switch 5 (1050) can transmit the multicast first service provision search message (PM1) to the priority manager (1054), as shown in FIG. 15. Although not shown in FIG. 15, the SDN switch 5 (1050) receives the multicast first service search message and the second service provision search message (PM2) and delivers them to the priority manager (1054). Of course it is possible.
- the priority manager 1054 may examine the priority information in the first service provision search message and determine that the priority of the first service provision search message PM1 is lower than a certain priority. In this case, the priority manager 1054 may discard the first service provision search message (PM1) having a lower priority than the certain priority.
- the priority manager 1054 receives the first service search search message, the first service provision search message (P2) corresponding to the first service search search message is discarded, so that the first service communication basic Information cannot be transmitted to the SDN controller 1053.
- the SDN controller 1053 does not need to perform a process to secure a transmission path required for first service communication. That is, the first service communication can be conducted through the originally scheduled transmission path.
- the SDN controller 1053 only needs to perform processing to secure a transmission path for service communication of a certain priority or higher.
- the SDN controller 1053 may secure a transmission path for service communication of a certain priority or higher by monitoring all multicast service messages from each node.
- the fact that the SDN controller 1053 monitors all multicast service messages from each node may act as a significant load on the SDN controller 1053.
- the host computer 1050 may further include the priority manager 1054.
- the priority manager 1054 monitors messages for the multicast service communication on behalf of the SDN controller 1053, and provides service communication basic information (BI) related to service communication of a certain priority or higher to the SDN controller ( 1053). Accordingly, since the SDN controller 1053 only needs to secure a transmission path for service communication of a certain priority or higher, the burden of computational load can be reduced.
- BI service communication basic information
- FIG. 16 is a flowchart of a process for generating the control request message of FIG. 7 and the service provision search message of FIG. 10.
- the CAN2ETH converter can receive CAN signals to be transmitted to other nodes [S161].
- the CAN2ETH converter can determine whether the CAN signal is the target of service communication by searching the service DB 141 for the identifier and/or type of the CAN signal [S162].
- the service DB 141 may store information on whether each CAN signal is the target of service communication depending on the identifier and/or type.
- the CAN2ETH converter may generate a control request message as described in FIG. 7 for the CAN signal and transmit it to the SDN controller 1053.
- the CAN2ETH converter can determine the priority of the CAN signal by searching the CAN DB 142 for the identifier and/or type of the CAN signal [S163].
- the CAN DB 142 may store information about the priority according to the identifier and/or type of each CAN signal.
- the CAN2ETH converter can find the destination information of the CAN signal by searching the CAN2ETH DB 143 for the identifier and/or type of the CAN signal [S164].
- the CAN2ETH converter can generate a control request message using the priority and destination information of the CAN signal and transmit it to the SDN controller 1053 [S165].
- the CAN2ETH converter provides other information for generating the control request message of the CAN signal, that is, information about the type, identifier, source information, and data size of the CAN signal. This can be seen from the CAN signal itself.
- the CAN2ETH converter matches the identifier and/or type of the CAN signal to the CAN signal in the mapping table DB 144 for conversion.
- the mapping table for conversion can be searched and parsed [S166].
- the CAN2ETH converter can use the parsed conversion mapping table to generate a service provision search message for the CAN signal as described in FIGS. 10 and 11 [S167].
- the CAN2ETH converter can multicast the service provision search message [S168].
- the SDN switch (1012, 1022, 1032, 1042, 1052) receives some packet data, and if the packet data is not defined in its forwarding table, it sends it to the SDN controller (1053) through a separate SDN protocol. You can inquire about the received packet data.
- the SDN controller 1053 holds all the corresponding forwarding tables of each SDN switch 1012, 1022, 1032, 1042, and 1052.
- the SDN controller 1053 which has received the inquiry, updates the transmission path of the queried packet data in the retained forwarding table and delivers the updated forwarding table to the SDN switch that inquired about the packet data, or
- the forwarding table of the SDN switch can be updated according to the updated forwarding table of the SDN controller 1053.
- the SDN controller 1053 has information about the available bandwidth of each SDN switch 1012, 1022, 1032, 1042, and 1052, and secures the bandwidth of the scheduled transmission path described above or uses the scheduled transmission path itself to another. It can be used to change the transmission route.
- Figure 17 is a detailed block diagram of a host computer in a vehicle according to an embodiment of the present disclosure.
- the host computer 1050 may include the SDN switch 5 (1052), the SDN controller 1053, the priority manager 1054, and the application 1055.
- the SDN switch 5 (1052), the priority manager (1054), and the application (1055) are as described above, and we will look at the SDN controller (1053) in more detail.
- the SDN controller 1053 may include a path calculator 1053-1, a bandwidth calculator 1053-3, and a control manager 1053-5.
- the path calculator 1053-1 can calculate the transmission path by referring to the forwarding table DB 1053-2, which stores the forwarding tables of the switches of each node.
- the bandwidth calculator 1053-3 can calculate the available bandwidth of the transmission path by referring to the path bandwidth DB 1053-4, which stores information about the available bandwidth of the link handled by the switch of each node. there is.
- the control manager (1053-5) controls the path operator (1053-1) and the bandwidth operator (1053-3), and the calculation results of the path operator (1053-1) and the bandwidth operator (1053-3) can be delivered to the SDN switch of each node.
- the TSN (Time Sensitive Network) standard is a standard for transmitting data in real time within a set time despite the latency in Ethernet communication. It includes parameters for changing the forwarding table and allocating (or securing) bandwidth. It is defined.
- the port of each node can be set based on the set parameter.
- the control manager (1053-5) generates at least one parameter for changing the forwarding table and allocating bandwidth through the path operator (1053-1) and the bandwidth operator (1053-3) and transmits it to the corresponding SDN switch. And, the corresponding SDN switch (1012, 1022, 1032, 1042, 1052) may update its forwarding table and/or allocate bandwidth based on the at least one parameter.
- Transmission of parameters for bandwidth allocation and transmission of parameters for changing the forwarding table may be performed through separate protocols.
- the parameters for bandwidth allocation may be written in YANG (Yet Another Next Generation) modeling language (eg, 802.1q-YANG modeling language) and transmitted through the NETCONF (Network Configuration) protocol.
- YANG Yet Another Next Generation
- NETCONF Network Configuration
- the SDN switch that receives the parameters for bandwidth allocation can secure a queue responsible for the bandwidth among the plurality of queues it operates.
- Parameters for changing the transmission table may be transmitted through the OpenFlow protocol.
- the CAN2ETH converter (1011, 1021, 1031, 1041) can transmit the priority used to secure a transmission path, such as the aforementioned control request message, in a VLAN tag header. Then, the SDN switches (1012, 1022, 1032, 1042, and 1052) receive the Ethernet signal and, based on the priority in the VLAN tag header, use the bandwidth secured in advance according to the transmission path for the Ethernet signal. The Ethernet signal can be assigned to the queue in charge. Then, the Ethernet signal can be transmitted according to the secured bandwidth.
- FIGS. 18 and 19 illustrate parameter transmission for changing bandwidth allocation and forwarding tables in a hybrid network system for communication between a plurality of nodes in a vehicle according to the present disclosure.
- the CAN2EHT converter 2 (1021) of the ECU2 (1020) attempts to transmit an Ethernet signal to the CAN2EHT converter 4 (1041) of the ECU4 (1020), and the planned transmission path of the Ethernet signal is the L2-4 link. Let's assume it is (transmission path 1). That is, assume that the pattern of the scheduled transmission path consists of the L2-4 link.
- the SDN controller 1053 may transmit a control signal including the first parameter (P1) for bandwidth allocation for the Ethernet signal to the SDN switch 2 (1022) of the ECU2 (1020).
- the SDN switch 2 (1022) of the ECU2 (1020) secures the bandwidth for the Ethernet signal according to the first parameter (P1), and the CAN2EHT converter 2 (1021) converts the Ethernet signal to the secured bandwidth. It can be transmitted to the CAN2EHT converter 4 (1041) through the L2-4 link.
- the bandwidth of the Ethernet signal may not be secured or the path may be blocked due to a communication failure.
- the SDN controller 1053 replaces the scheduled transmission path (transmission path 1) with another transmission path (transmission path 2) that can secure bandwidth for transmission of the Ethernet signal.
- FIG. 19 illustrates that the other transmission path (transmission path 2) consists of the L2-5 link and the S4-5 link. That is, the path pattern of the other transmission path is illustrated as consisting of the L2-5 link and the S4-5 link. Of course, this is only an example for the other transmission path, and it may be configured differently.
- the SDN controller 1053 configures the transmission table of the SDN switch 2 (1022) involved in the transmission path 2 for transmission of the Ethernet signal. 2 and the SDN switch 5 (1052) can be controlled to change the forwarding table 5 of the SDN switch 5 (1052).
- the forwarding table 2 of the SDN switch 2 (1022) is transmitted to the L2-5 link when the SDN switch 2 (1022) receives the Ethernet signal from the CAN2ETH converter 2 (1021). It can be changed to transmit to the SDN switch 5 (1052) through . Additionally, the SDN switch 2 (1022) can secure the bandwidth for the Ethernet signal in advance in the L2-5 link according to the second parameter (P2). That is, the second parameter P2 can be understood as including parameters for bandwidth allocation and parameters for changing the forwarding table.
- the forwarding table 5 of the SDN switch 5 (1054) transmits the Ethernet signal to the L4- It can be changed to transmit to the SDN switch 4 (1042) through link 5.
- the SDN switch 5 (1052) can secure the bandwidth for the Ethernet signal in advance in the L4-5 link according to the third parameter (P3). That is, the third parameter (P3) can also be understood as including parameters for bandwidth allocation and parameters for changing the forwarding table.
- the Ethernet sensing signal can be transmitted through the other transmission path (transmission path 2).
- FIG. 20 is a flowchart of bandwidth allocation and change of a forwarding table in a hybrid network system for communication between a plurality of nodes of a vehicle according to an embodiment of the present disclosure.
- control manager 1053-5 includes the type (or identifier) of the Ethernet signal to be transmitted, the source identifier (e.g., source IP), the destination identifier (e.g., destination IP), and the data size. , and priorities can be identified [S201].
- the control manager (1053-5) refers to the forwarding table DB (1053-2) to determine the scheduled transmission path of the Ethernet signal, and further refers to the link information DB (1053-6) to block the scheduled transmission path. You can check whether it is available (i.e., whether it is available) [S202].
- the link information DB 1053-6 may store information on the availability of each link based on Link Layer Discovery Protocol (LLDP).
- LLDP Link Layer Discovery Protocol
- control manager 1053-5 may reset the transmission path until an available transmission path is found [S206, S203]. And, the control manager 1053-5 can update the transmission table DB 1053-2 according to the reset transmission path.
- control manager (1053-5) refers to the path bandwidth DB (1053-4) to determine the bandwidth reservation status for each node of the transmission path, and determines the bandwidth reservation status for each node of the transmission path. It is possible to determine whether bandwidth can be secured to meet the priority of the Ethernet signal [S204].
- control manager (1053-5) resets the path pattern of the transmission path until a transmission path that can secure the bandwidth is found, and the transmission path according to the reset path pattern It is possible to determine whether is available and whether bandwidth can be secured [S206, S203, S204, S205].
- control manager 1053-5 may transmit a control signal containing parameters for securing the bandwidth and/or changing the transmission path to the corresponding SDN switch [S207].
- Computer-readable media includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. This also includes those implemented in the form of carrier waves (e.g., transmission via the Internet). Additionally, the computer may include a control unit of the autonomous driving system. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Small-Scale Networks (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims (20)
- CAN(Controller Area Network) 신호로부터 변환되어 제 1 노드에서 제 2 노드로 전송되기 위한 이더넷 신호의 우선 순위에 기반하여, 제 1 노드 및 제 2 노드 간의 전송 경로에서 상기 이더넷 신호의 전송에 필요한 대역폭이 확보 가능한지 판단하는 단계;상기 대역폭이 확보 가능한 경우, 상기 이더넷 신호가 상기 전송 경로에 따라 제 2 노드에 전송되도록 제어하는 단계; 및상기 대역폭이 확보 가능하지 않은 경우, 상기 전송 경로가 제 3 노드를 경유하도록 변경하고, 상기 이더넷 신호가 상기 변경된 전송 경로에 따라 제 2 노드에 전송되도록 제어하는 단계;를 포함하는 차량 내 네트워크의 제어 방법.
- 제 1 항에 있어서,상기 CAN 신호는 제 1 노드, 제 2 노드, 및 제 3 노드 간에 SDN(Software Defined Networking)에 따라 전송되는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 2 항에 있어서,상기 이더넷 신호의 전송 경로를 확보하기 위한 제어 요청 메시지가 제 1 노드에 의해 전송되는 단계;를 더욱 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 3 항에 있어서,상기 제어 요청 메시지에 포함된 상기 CAN 신호의 타입, 상기 CAN 신호의 데이터 사이즈, 상기 CAN 신호의 우선 순위, 제 1 노드 식별자, 및 제 2 노드 식별자에 기반하여 상기 이더넷 신호의 전송에 필요한 대역폭이 확보 가능한지가 판단되는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 3 항에 있어서,상기 제어 요청 메시지는 상기 CAN 신호가 SOME/IP(Scalable service-Oriented MiddlewarE over IP)의 서비스 통신의 대상이 아닌 경우에 전송되는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 5 항에 있어서,상기 CAN 신호가 상기 서비스 통신의 대상인 경우, 서비스 제공용 검색 메시지가 제 1 노드에 의해 전송되는 단계; 및서비스 찾기용 검색 메시지가 제 2 노드에 의해 전송되는 단계;를 더욱 포함하고,상기 서비스 제공용 검색 메시지 및 상기 서비스 찾기용 검색 메시지에 기반하여, 상기 서비스 통신에 필요한 대역폭이 확보 가능한지가 판단되는 것을 특징으로 하는 차량 내 네트워크의 제어방법.
- 제 6 항에 있어서,상기 서비스 제공용 검색 메시지는 상기 서비스 통신의 식별 정보, 상기 서비스 통신의 우선 순위, 상기 서비스 통신의 데이터 사이즈, 및 제 1 노드의 식별자를 포함하고,상기 서비스 찾기용 검색 메시지는 상기 서비스 통신의 상기 식별 정보 및 제 2 노드의 식별자를 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 1 항에 있어서,상기 대역폭이 확보 가능한 경우, 상기 대역폭의 확보를 위한 제 1 파라미터를 제 1 노드의 제 1 SDN 스위치로 전송하는 단계;제 1 파라미터에 따라서 제 1 SDN 스위치가 자신이 운영하는 복수의 큐들 중에 상기 대역폭을 담당하는 큐를 확보하는 단계; 및상기 확보된 큐를 통해 상기 이더넷 신호가 전송되는 단계;를 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 8 항에 있어서,제 1 파라미터는 NETCONF(Network Configuration) 프로토콜을 통해서 전송되는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 1 항에 있어서,제 1 노드는 제 1 전달 테이블을 갖는 제 1 SDN 스위치를 포함하고,제 2 노드는 제 2 전달 테이블을 갖는 제 2 SDN 스위치를 포함하고,제 3 노드는 제 3 전달 테이블을 갖는 제 3 SDN 스위치를 포함하고,상기 대역폭이 확보 가능하지 않은 경우, 제 1 노드의 제 1 SDN 스위치로 상기 전송 경로의 변경을 위한 제 2 파라미터를 전송하는 단계;제 2 파라미터에 따라서 제 1 전달 테이블이 상기 이더넷 신호를 제 3 SDN 스위치로 전송하도록 변경되는 단계;를 더욱 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 10 항에 있어서,상기 전송 경로의 변경을 위한 제 3 파라미터를 제 3 SDN 스위치로 전송하는 단계; 및제 3 파라미터에 따라서 제 3 전달 테이블이 상기 이더넷 신호를 제 2 SDN 스위치로 전송하도록 변경되는 단계;를 더욱 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 11 항에 있어서,제 2 파라미터 및 제 3 파라미터는 오픈플로우(OpenFlow) 프로토콜을 통해 전송되는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 12 항에 있어서,제 1 파라미터, 제 2 파라미터, 및 제 3 파라미터는 TSN(Time Sensitive Network) 규격에 따라서 정의되는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 11 항에 있어서,상기 네트워크는 호스트 컴퓨터를 포함하고,상기 호스트 컴퓨터는 제 1 파라미터, 제 2 파라미터, 및 제 3 파라미터를 전송함으로써 상기 대역폭을 확보하거나 상기 전송 경로를 변경하도록 제 1 SDN 스위치, 제 2 SDN 스위치 및 제 3 스위치를 제어하는 SDN 컨트롤러를 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 14 항에 있어서, 상기 호스트 컴퓨터는,상기 네트워크 상에서 멀티캐스팅되는 복수의 서비스 제공용 검색 메시지 및 복수의 서비스 찾기용 검색 메시지를 모니터링하고, 상기 우선 순위가 일정 레벨 이상에 해당하는 서비스 제공용 검색 메시지 및 이에 대응되는 서비스 찾기용 검색 메시지의 서비스 통신 기본 정보를 상기 SDN 컨트롤러로 전달하기 위한 우선 순위 매니저를 더욱 포함하는 것을 특징으로 차량 내 네트워크의 제어 방법.
- 제 15 항에 있어서, 상기 SDN 컨트롤러는,각 노드의 스위치의 전달 테이블을 저장하는 전달 테이블 DB; 및상기 전달 테이블 DB를 참조하여 상기 변경된 전송 경로를 연산하기 위한 경로 연산기;를 더욱 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 16 항에 있어서, 상기 SDN 컨트롤러는,각 노드의 스위치가 담당하는 링크의 가용 대역폭에 관한 정보를 저장하는 경로 대역폭 DB; 및상기 경로 대역폭 DB를 참조하여 상기 변경된 전송 경로의 대역폭을 연산하기 위한 대역폭 연산기;를 더욱 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 17 항에 있어서, 상기 SDN 컨트롤러는,상기 경로 연산기 및 상기 대역폭 연산기의 연산 결과에 기반하여 제 1 파라미터, 제 2 파라미터, 및 제 3 파라미터를 생성하는 제어 매니저를 더욱 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 1 항에 있어서,제 1 노드는 상기 CAN 신호 및 상기 이더넷 신호 간의 변환을 위한 제 1 변환기를 포함하는 것을 특징으로 하는 차량 내 네트워크의 제어 방법.
- 제 1 노드, 제 2 노드, 제 3 노드, 및 호스트 컴퓨터를 포함하고,제 1 노드는 CAN(Controller Area Network) 신호를 제 2 노드로 전송하기 위한 이더넷 신호로 변환하고,상기 호스트 컴퓨터는,상기 이더넷 신호의 우선 순위에 기반하여, 상기 이더넷 신호의 제 1 노드 및 제 2 노드 간의 전송 경로에 상기 이더넷 신호의 전송에 필요한 대역폭이 확보 가능하지 판단하고,상기 대역폭이 확보 가능하면, 상기 이더넷 신호가 상기 전송 경로에 따라서 제 2 노드에 전송되도록 제어하고,상기 대역폭이 확보 가능하지 않으면, 상기 전송 경로가 제 3 노드를 경유하도록 변경하고, 상기 변경된 전송 경로에 따라서 상기 이더넷 신호가 제 2 노드에 전송되도록 제어하는 차량 내 네트워크.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020247027988A KR20240141275A (ko) | 2022-04-28 | 2022-09-15 | Sdn 기반의 차량 내 네트워크 및 이의 제어 방법 |
EP22940375.3A EP4475491A1 (en) | 2022-04-28 | 2022-09-15 | Sdn-based in-vehicle network and control method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2022-0052481 | 2022-04-28 | ||
KR20220052481 | 2022-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023210881A1 true WO2023210881A1 (ko) | 2023-11-02 |
Family
ID=88519020
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/013749 WO2023210881A1 (ko) | 2022-04-28 | 2022-09-15 | Sdn 기반의 차량 내 네트워크 및 이의 제어 방법 |
PCT/KR2022/016954 WO2023210890A1 (ko) | 2022-04-28 | 2022-11-02 | 차량 내 네트워크 및 이의 제어 방법 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/016954 WO2023210890A1 (ko) | 2022-04-28 | 2022-11-02 | 차량 내 네트워크 및 이의 제어 방법 |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP4475491A1 (ko) |
KR (2) | KR20240141275A (ko) |
WO (2) | WO2023210881A1 (ko) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210015705A (ko) * | 2019-07-31 | 2021-02-10 | 고려대학교 산학협력단 | 차량 내부 네트워크에 대한 sdn 기반의 침입 대응 방법 및 이를 이용한 시스템 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102452615B1 (ko) * | 2016-01-21 | 2022-10-06 | 현대자동차주식회사 | 네트워크에서 우선순위에 기초한 데이터의 전송 방법 |
DE102018105007B4 (de) * | 2018-03-05 | 2019-10-17 | Volkswagen Aktiengesellschaft | Verfahren zur Übertragung von Daten über einen Kommunikationskanal, entsprechend ausgelegte Vorrichtung und Kommunikationsschnittstelle sowie entsprechend ausgelegtes Computerprogramm |
-
2022
- 2022-09-15 KR KR1020247027988A patent/KR20240141275A/ko unknown
- 2022-09-15 WO PCT/KR2022/013749 patent/WO2023210881A1/ko active Application Filing
- 2022-09-15 EP EP22940375.3A patent/EP4475491A1/en active Pending
- 2022-11-02 EP EP22940384.5A patent/EP4472146A1/en active Pending
- 2022-11-02 WO PCT/KR2022/016954 patent/WO2023210890A1/ko unknown
- 2022-11-02 KR KR1020247027989A patent/KR20240137063A/ko unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210015705A (ko) * | 2019-07-31 | 2021-02-10 | 고려대학교 산학협력단 | 차량 내부 네트워크에 대한 sdn 기반의 침입 대응 방법 및 이를 이용한 시스템 |
Non-Patent Citations (4)
Title |
---|
DOERING MICHAEL, WAGNER MARCO: "Retrofitting SDN to classical in-vehicle networks: SDN4CAN", CONFERENCE: 1. KUVS FACHGESPRÄCH "NETWORK SOFTWARIZATION" – FROM RESEARCH TO APPLICATION, UNIVERSITÄT TÜBINGEN, 1 October 2017 (2017-10-01), XP093103663, DOI: 10.15496/publikation-19541 * |
LEE YOUNGWOO; PARK KYOUNGSOO: "Meeting the real-time constraints with standard Ethernet in an in-vehicle network", 2013 IEEE INTELLIGENT VEHICLES SYMPOSIUM (IV), IEEE, 23 June 2013 (2013-06-23), pages 1313 - 1318, XP032501974, ISSN: 1931-0587, DOI: 10.1109/IVS.2013.6629648 * |
ROTERMUND RANDOLF; HACKEL TIMO; MEYER PHILIPP; KORF FRANZ; SCHMIDT THOMAS C.: "Requirements Analysis and Performance Evaluation of SDN Controllers for Automotive Use Cases", 2020 IEEE VEHICULAR NETWORKING CONFERENCE (VNC), IEEE, 16 December 2020 (2020-12-16), pages 1 - 8, XP033879241, DOI: 10.1109/VNC51378.2020.9318378 * |
SHREEJITH SHANKER, MUNDHENK PHILIPP, ETTNER ANDREAS, FAHMY SUHAIB A., STEINHORST SEBASTIAN, LUKASIEWYCZ MARTIN, CHAKRABORTY SAMARJ: "VEGa: A High Performance Vehicular Ethernet Gateway on Hybrid FPGA", IEEE TRANSACTIONS ON COMPUTERS, IEEE, USA, vol. 66, no. 10, 1 October 2017 (2017-10-01), USA , pages 1790 - 1803, XP093103661, ISSN: 0018-9340, DOI: 10.1109/TC.2017.2700277 * |
Also Published As
Publication number | Publication date |
---|---|
KR20240141275A (ko) | 2024-09-26 |
KR20240137063A (ko) | 2024-09-19 |
EP4472146A1 (en) | 2024-12-04 |
EP4475491A1 (en) | 2024-12-11 |
WO2023210890A1 (ko) | 2023-11-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019098434A1 (ko) | 차량에 구비된 차량 제어 장치 및 차량의 제어방법 | |
WO2021045257A1 (ko) | 경로 제공 장치 및 그것의 경로 제공 방법 | |
WO2017222299A1 (en) | Vehicle control device mounted on vehicle and method for controlling the vehicle | |
WO2018088615A1 (ko) | 차량 주행 제어 장치 및 방법 | |
WO2019031851A1 (ko) | 지도 제공 장치 | |
WO2017138702A1 (ko) | 차량용 사용자 인터페이스 장치 및 차량 | |
WO2020080566A1 (ko) | 전자 제어 장치 및 통신 장치 | |
WO2021090971A1 (ko) | 경로 제공 장치 및 그것의 경로 제공 방법 | |
WO2018079919A1 (ko) | 자율 주행 차량 및 자율 주행 차량의 동작 방법 | |
EP3475134A1 (en) | Vehicle control device mounted on vehicle and method for controlling the vehicle | |
WO2018097465A1 (en) | Vehicle control device mounted on vehicle and method for controlling the vehicle | |
WO2018110789A1 (en) | Vehicle controlling technology | |
WO2021045256A1 (ko) | 경로 제공 장치 및 그것의 경로 제공 방법 | |
EP3545380A1 (en) | Vehicle control device mounted on vehicle and method for controlling the vehicle | |
WO2021025212A1 (ko) | 경로 제공 장치 및 그것의 경로 제공 방법 | |
WO2018139708A1 (ko) | 차량용 전자 디바이스 해킹 테스트 장치 | |
WO2020145442A1 (ko) | 자율 주행 차량의 제어 권한 이양 장치 및 방법 | |
WO2018093192A1 (ko) | 차량용 레이더 장치 및 차량 | |
WO2019054719A1 (ko) | 차량 운전 보조 장치 및 차량 | |
WO2018235979A1 (ko) | 차량에 구비된 차량 제어 장치 및 차량의 제어방법 | |
WO2020149427A1 (ko) | 경로 제공 장치 및 그것의 경로 제공 방법 | |
WO2018097424A1 (ko) | 차량용 통신 장치 및 차량 | |
WO2018124403A1 (ko) | 차량용 카메라 장치 및 차량 | |
WO2020138515A1 (ko) | 경로 제공 장치 및 그것의 경로 제공 방법 | |
WO2021025216A1 (ko) | 경로 제공 장치 및 그것의 경로 제공 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22940375 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20247027988 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022940375 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022940375 Country of ref document: EP Effective date: 20240906 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |