WO2024029323A1 - 中継装置、スリープ制御方法およびスリープ制御プログラム - Google Patents
中継装置、スリープ制御方法およびスリープ制御プログラム Download PDFInfo
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- WO2024029323A1 WO2024029323A1 PCT/JP2023/026255 JP2023026255W WO2024029323A1 WO 2024029323 A1 WO2024029323 A1 WO 2024029323A1 JP 2023026255 W JP2023026255 W JP 2023026255W WO 2024029323 A1 WO2024029323 A1 WO 2024029323A1
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- vehicle
- wake
- state
- relay device
- sleep control
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- 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
- H04L12/40006—Architecture of a communication node
- H04L12/40039—Details regarding the setting of the power status of a node according to activity on the bus
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
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- 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]
-
- 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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
- H04L41/0833—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for reduction of network energy consumption
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- 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
Definitions
- the present disclosure relates to a relay device, a sleep control method, and a sleep control program.
- This application claims priority based on Japanese Patent Application No. 2022-125479 filed on August 5, 2022, and the entire disclosure thereof is incorporated herein.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2021-160472 discloses the following technology. That is, the in-vehicle device includes a communication unit that communicates with the in-vehicle device in the in-vehicle network, a detection unit that detects a new in-vehicle device that is an in-vehicle device newly added to the in-vehicle network, and a detection unit that detects the new in-vehicle device by the detection unit. and a sleep processing section that transmits a sleep request for transitioning to a sleep state to the new in-vehicle device via the communication section in synchronization with the in-vehicle device in the in-vehicle network in the detected detection state.
- a relay device is a relay device used in an in-vehicle system including three or more in-vehicle devices, and receives a first wake-up request from a first in-vehicle device among the three or more in-vehicle devices.
- a state transition unit that transitions the relay device in a sleep state to a wake-up state selects a second in-vehicle device from among the in-vehicle devices other than the first in-vehicle device, and and a sleep control unit that transmits a second wake-up request to the second vehicle-mounted device to cause the device to transition to the wake-up state.
- One aspect of the present disclosure can be realized not only as a relay device including such a characteristic processing unit, but also as a semiconductor integrated circuit that realizes part or all of the relay device, or as a semiconductor integrated circuit that implements part or all of the relay device, It can be realized as a system.
- FIG. 1 is a diagram illustrating an example of the configuration of an in-vehicle system according to an embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating an example of a configuration of a relay device according to an embodiment of the present disclosure.
- FIG. 3 is a diagram illustrating an example of a frame transmitted in the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 4 is a diagram illustrating an example of an address table held by a relay device according to an embodiment of the present disclosure.
- FIG. 5 is a diagram illustrating an example of a sleep processing sequence in the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 1 is a diagram illustrating an example of the configuration of an in-vehicle system according to an embodiment of the present disclosure.
- FIG. 2 is a diagram illustrating an example of a configuration of a relay device according to an embodiment of the present disclosure.
- FIG. 3 is a diagram illustrating an example of a frame transmitted in the in
- FIG. 6 is a diagram illustrating an example of a sleep control sequence in an in-vehicle system according to a comparative example.
- FIG. 7 is a diagram illustrating an example of a network table held by a relay device according to an embodiment of the present disclosure.
- FIG. 8 is a diagram illustrating an example of a sleep control sequence in the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 9 is a diagram illustrating a configuration of modification example 1 of the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 10 is a diagram showing a network table held by the relay device of Modification 1 of the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 10 is a diagram showing a network table held by the relay device of Modification 1 of the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 11 is a diagram illustrating a configuration of a second modification of the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 12 is a diagram showing a network table held by the relay device of Modification 2 of the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 13 is a diagram illustrating a configuration of modification 3 of the in-vehicle system according to the embodiment of the present disclosure.
- FIG. 14 is a diagram showing a network table held by the relay device of Modification 3 of the in-vehicle system according to the embodiment of the present disclosure.
- the present disclosure has been made to solve the above-mentioned problems, and the purpose is to provide a relay device, a sleep control method, and a sleep control program that can improve the power saving function in an in-vehicle system. .
- the power saving function of an in-vehicle system can be improved.
- a relay device is a relay device used in an in-vehicle system including three or more in-vehicle devices, and in which a first in-vehicle device among the three or more in-vehicle devices a state transition unit that transitions the relay device in a sleep state to a wake-up state when a first wake-up request is received; and a sleep control unit configured to select a sleep state and transmit a second wake-up request to the second vehicle-mounted device to cause the second vehicle-mounted device to transition to the wake-up state.
- the second vehicle-mounted device to which the wake-up request is sent is selected, and the second vehicle-mounted device that is in the sleep state is transitioned to the wake-up state.
- the relay device further includes three or more communication ports to which the three or more in-vehicle devices are respectively connected, and a correspondence relationship between the communication ports and the network to which the in-vehicle devices belong. and a storage section that stores correspondence information indicating the correspondence information, and the sleep control section may select the second in-vehicle device based on the correspondence information.
- the second vehicle-mounted device can be easily selected from among the vehicle-mounted devices other than the first vehicle-mounted device.
- the correspondence information may indicate a correspondence relationship between the communication port and a VLAN (Virtual Local Area Network), and the sleep control section
- the vehicle-mounted device belonging to the same VLAN as the VLAN corresponding to the communication port to which the first vehicle-mounted device is connected may be selected as the second vehicle-mounted device.
- an in-vehicle device that belongs to the same network as the first in-vehicle device can be easily selected as the second in-vehicle device.
- the correspondence information may indicate a correspondence relationship between the communication port and a PNC (Partial Network Cluster), and the sleep control unit is configured to
- the vehicle-mounted device belonging to the same PNC as the PNC corresponding to the communication port to which the vehicle-mounted device is connected may be selected as the second vehicle-mounted device.
- an in-vehicle device that belongs to the same network as the first in-vehicle device can be easily selected as the second in-vehicle device.
- the correspondence information may indicate a correspondence relationship between the communication port, VLAN, and PNC
- the sleep control unit is configured to control the communication port to which the first in-vehicle device is connected.
- the in-vehicle device belonging to the same PNC as the PNC corresponding to the communication port to which the first in-vehicle device is connected is given priority as the second in-vehicle device over the in-vehicle device belonging to the same VLAN as the VLAN corresponding to the first in-vehicle device. may be selected.
- the in-vehicle device belonging to the PNC which is a network with a high priority, can be selected as the second in-vehicle device.
- a sleep control method is a sleep control method in a relay device used in an in-vehicle system including three or more in-vehicle devices, wherein If a first wake-up request is received from one vehicle-mounted device, the step of transitioning the relay device in a sleep state to a wake-up state; The method includes the step of selecting an in-vehicle device and transmitting a second wake-up request to the second in-vehicle device to cause the second in-vehicle device to transition to the wake-up state.
- the second vehicle-mounted device to which the wake-up request is sent is selected, and the second vehicle-mounted device that is in the sleep state is transitioned to the wake-up state.
- a sleep control program is a sleep control program used in a relay device used in an in-vehicle system including three or more in-vehicle devices, a state transition unit that transitions the relay device in a sleep state to a wake-up state when a first wake-up request is received from a first vehicle-mounted device among the devices; a sleep control unit that selects a second in-vehicle device from among the devices and transmits a second wake-up request to the second in-vehicle device for transitioning the second in-vehicle device to the wake-up state; This is a program to make it work.
- the second vehicle-mounted device to which the wake-up request is sent is selected, and the second vehicle-mounted device that is in the sleep state is transitioned to the wake-up state.
- FIG. 1 is a diagram illustrating an example of the configuration of an in-vehicle system according to an embodiment of the present disclosure.
- in-vehicle system 301 includes, for example, one or more relay devices 101 and three or more in-vehicle ECUs 202.
- the in-vehicle system 301 includes one relay device 101 and four in-vehicle ECUs 202A, 202B, 202C, and 202D.
- Relay device 101 and in-vehicle ECU 202 constitute in-vehicle network 401 .
- the in-vehicle system 301 is mounted on the vehicle 1.
- In-vehicle ECU 202 is an example of an in-vehicle device.
- the in-vehicle system 301 is not limited to a configuration including one relay device 101 but may be configured to include a plurality of relay devices 101. Furthermore, the in-vehicle system 301 is not limited to a configuration including four in-vehicle ECUs 202, but may be configured to include three in-vehicle ECUs 202 or five or more in-vehicle ECUs 202.
- the in-vehicle ECU 202 is, for example, a TCU (Telematics Communication Unit), an automatic driving ECU, a face authentication ECU, a door lock ECU, a sensor, a navigation device, a human-machine interface, a camera, and the like.
- TCU Transmission Control Unit
- An automatic driving ECU a face authentication ECU
- a door lock ECU a sensor
- a navigation device a human-machine interface
- a camera and the like.
- in-vehicle ECUs 202A and 202B and in-vehicle ECUs 202C and 202D belong to different VLANs.
- VLAN-ID The ID of the VLAN to which the in-vehicle ECUs 202A and 202B belong is "10", and the ID of the VLAN to which the in-vehicle ECUs 202C and 202D belong is "20”. Note that in the following description, the VLAN ID may be referred to as "VLAN-ID”.
- the relay device 101 and the in-vehicle ECU 202 are devices that comply with a predetermined in-vehicle network management method. More specifically, the relay device 101 and the in-vehicle ECU 202 are devices compliant with AUTOSAR (AUTomotive Open System ARchicture) (registered trademark), which is an example of an in-vehicle network management system.
- AUTOSAR AUTomotive Open System ARchicture
- the in-vehicle ECU 202 is connected to the relay device 101 via, for example, an Ethernet (registered trademark) cable 11.
- Ethernet registered trademark
- Each in-vehicle ECU 202 is connected to other in-vehicle ECUs 202 via the Ethernet cable 11 and the relay device 101.
- the relay device 101 is, for example, a gateway device.
- Relay device 101 can perform relay processing according to layer 2 and layer 3, which is higher than layer 2, for example.
- the relay device 101 relays Ethernet frames (hereinafter also simply referred to as "frames") exchanged between the in-vehicle ECUs 202 connected via the Ethernet cable 11, for example, in accordance with the Ethernet communication standard. conduct.
- frames Ethernet frames
- the relay device 101 and each in-vehicle ECU 202 generate frames including various information described below, and transmit them to other in-vehicle ECUs 202 or the relay device 101.
- the in-vehicle system 301 is not limited to a configuration in which frame relay processing is performed according to the Ethernet communication standard, and includes, for example, CAN (Controller Area Network), CAN FD (CAN with Flexible Data Rate), FlexRay (registered trademark), M OST
- the configuration may be such that frames are relayed according to communication standards such as Media Orient System Transport (registered trademark) and LIN (Local Interconnect Network).
- FIG. 2 is a diagram illustrating an example of a configuration of a relay device according to an embodiment of the present disclosure.
- relay device 101 includes a communication port 51, a switch section 52, a processing section 53, and a storage section 54.
- the switch section 52 and the processing section 53 are realized by, for example, a processing circuit including one or more processors.
- the storage unit 54 is, for example, a nonvolatile memory included in the processing circuit.
- the processing section 53 includes a determination section 61, a state transition section 62, and a sleep control section 63.
- the relay device 101 includes three or more communication ports 51 to which three or more in-vehicle ECUs 202 are respectively connected.
- the communication port 51 is, for example, a terminal to which the Ethernet cable 11 can be connected.
- the relay device 101 includes four communication ports 51A, 51B, 51C, and 51D, which are the communication ports 51.
- on-vehicle ECUs 202A, 202B, 202C, and 202D are connected to communication ports 51A, 51B, 51C, and 51D via Ethernet cables 11, respectively.
- the switch section 52 includes, for example, a plurality of terminals (not shown) each connected to a plurality of communication ports 51. Each terminal is assigned a unique port number.
- the port numbers of the respective terminals connected to the communication ports 51A, 51B, 51C, and 51D are #1, #2, #3, and #4, respectively.
- the switch unit 52 relays frames transmitted and received between the in-vehicle ECUs 202. More specifically, upon receiving a frame addressed to another in-vehicle ECU 202 from one in-vehicle ECU 202 via the communication port 51, the switch unit 52 transmits the received frame to the destination in-vehicle ECU 202.
- the switch unit 52 upon receiving a frame destined for the relay device 101 from the in-vehicle ECU 202 via the communication port 51, the switch unit 52 outputs the received frame to the processing unit 53.
- the switch section 52 transmits the frame received from the processing section 53 to the destination in-vehicle ECU 202 via the communication port 51.
- FIG. 3 is a diagram illustrating an example of a frame transmitted in the in-vehicle system according to the embodiment of the present disclosure.
- a frame has fields of address, tag, type, and payload.
- the address field stores, for example, a destination MAC address and a source MAC address.
- a VLAN-ID is stored in the tag field.
- a destination IP address and various information are stored in the payload.
- the MAC addresses of the in-vehicle ECUs 202A, 202B, 202C, and 202D are "MAC-A”, “MAC-B”, “MAC-C”, and “MAC-D”, respectively.
- the storage unit 54 stores a MAC address table (hereinafter also referred to as "address table M") indicating the correspondence between the MAC address of the in-vehicle ECU 202 and the communication port 51.
- address table M a MAC address table
- FIG. 4 is a diagram illustrating an example of an address table held by a relay device according to an embodiment of the present disclosure.
- MAC address "MAC-A” and port number "#1" of communication port 51A are associated with each other, and MAC address "MAC-B” and port number of communication port 51B are associated with each other.
- "#2" is associated with the MAC address "MAC-C”
- the port number "#3" of the communication port 51C is associated with the MAC address "MAC-D”
- the port number "#3" of the communication port 51D is associated with the MAC address "MAC-D”.
- 4" are associated with each other.
- the relay device 101 and the in-vehicle ECU 202 transition from a wake-up state to a sleep state, and also transition from a sleep state to a wake-up state.
- the relay device 101 and the vehicle-mounted ECU 202 communicate with other devices in the vehicle-mounted system 301 in the wake-up state, and stop communicating with other devices in the vehicle-mounted system 301 in the sleep state.
- the sleep state is a state in which power consumption is lower than in the wake-up state due to stopping some functions of the device, stopping power supply to the device, or decreasing the clock frequency of the device.
- a sleep condition that is a condition for transitioning to a sleep state and a wake-up condition that is a condition for transitioning to a wake-up state are set in advance.
- the sleep conditions are that the ignition of the vehicle 1 is turned off, that the vehicle 1 is parked or stopped, and so on.
- the wake-up conditions are that the ignition of the vehicle 1 is turned on, that the vehicle 1 starts running, and so on.
- FIG. 5 is a diagram illustrating an example of a sleep processing sequence in the in-vehicle system according to the embodiment of the present disclosure.
- “Device A” and “Device B” shown in FIG. 5 are the relay device 101 or the in-vehicle ECU 202.
- step S51 and S52 device A and device B transmit a frame in which an NM (Network Management) message according to AUTOSAR is stored to each device in the in-vehicle system 301. . Specifically, device A and device B broadcast a frame in which the NM message is stored in the payload to each device for life monitoring (steps S53 and S54).
- NM Network Management
- step S55 when device A satisfies its own sleep condition in the wake-up state (step S55), device A stops transmitting the NM message (step S56).
- step S57 when device B satisfies its own sleep condition in the wake-up state (step S57), device B stops transmitting the NM message (step S58).
- Step S59 if devices A and B do not receive an NM message from other devices in the in-vehicle system 301 within a predetermined period of time after they stop transmitting the NM message, they transition to a sleep state.
- step S59 if the device A and device B meet their own wake-up conditions, they transition to the wake-up state and start periodically transmitting NM messages. Further, when device A and device B receive a wake-up request from another device in the in-vehicle system 301 in the sleep state (step S59), they transition to the wake-up state.
- determination unit 61 in relay device 101 determines whether the sleep condition of relay device 101 is satisfied or not, and whether the wake-up condition of relay device 101 is satisfied or not.
- the determining unit 61 monitors the state of the vehicle 1 and performs a determination process to determine whether the sleep condition of the relay device 101 is satisfied or not and the wake-up condition of the relay device 101 is satisfied or not based on the monitoring result. .
- the determination unit 61 periodically performs a determination process, for example, and notifies the state transition unit 62 of the determination result.
- the state transition unit 62 causes the relay device 101 to transition to a sleep state. Further, the state transition unit 62 causes the relay device 101 to transition to a wake-up state.
- the switch section 52 includes a plurality of communication circuits corresponding to the plurality of communication ports 51, respectively.
- the relay device 101 When the relay device 101 is in the sleep state, all communication circuits in the switch unit 52 are inactive.
- the relay device 101 is in the wake-up state, at least one communication circuit among the plurality of communication circuits of the switch unit 52 is operating.
- the state in which the communication circuit of the switch unit 52 is inactive is also referred to as an "off state”
- the state in which the communication circuit is in operation is also referred to as an "on state”.
- the state transition unit 62 causes the relay device 101 to transition to the sleep state.
- the state transition unit 62 transitions the relay device 101 to the wake-up state.
- the state transition unit 62 when the state transition unit 62 receives a wake-up request from the in-vehicle ECU 202 via the communication port 51 and the switch unit 52, the state transition unit 62 transitions the relay device 101 from the sleep state to the wake-up state.
- the wake-up request sent by the in-vehicle ECU 202 to the relay device 101 will also be referred to as a "wake-up request R1.”
- Wakeup request R1 is an example of a first wakeup request. Note that the description "first" does not mean priority.
- the in-vehicle ECU 202 transmits the wake-up request R1 to the directly connected relay device 101 via the Ethernet cable 11.
- the wake-up request R1 is a high-level pulse signal.
- the in-vehicle ECU 202 transmits the high-level pulse signal to the relay device 101, for example, in accordance with the OPEN Alliance standard.
- the switch unit 52 When the switch unit 52 receives the wake-up request R1 from the in-vehicle ECU 202 via the communication port 51, the switch unit 52 sends a reception notification indicating that the wake-up request R1 has been received and the port number of the communication port 51 that received the wake-up request R1 to the state. It is output to the transition section 62 and sleep control section 63.
- the state transition unit 62 receives the reception notification from the switch unit 52 and transitions the relay device 101 from the sleep state to the wake-up state. More specifically, the state transition unit 62 transitions the communication circuit corresponding to the communication port 51 that received the wake-up request R1 from the off state to the on state.
- the relay device 101 and the in-vehicle ECU 202 establish a communication connection with each other by exchanging frames containing various information.
- the sleep control unit 63 controls the in-vehicle ECU 202 to transition to a wake-up state.
- the sleep control unit 63 sends a wake-up request such as a high-level pulse signal to the in-vehicle ECU 202 to be woken up via the switch unit 52 and the communication port 51. Send to.
- a wake-up request such as a high-level pulse signal
- the in-vehicle ECU 202 receives the wake-up request, it transitions to a wake-up state.
- the wake-up request transmitted by the relay device 101 to the in-vehicle ECU 202 will also be referred to as a "wake-up request R2.”
- Wakeup request R2 is an example of a second wakeup request. Note that the description of "second" does not mean priority.
- the in-vehicle ECU 202A transitions to a wake-up state in order to communicate with the in-vehicle ECU 202B, and transmits a wake-up request R1 to the relay device 101.
- the relay device 101 receives the wake-up request R1 and transitions to the wake-up state.
- the wake-up request R1 is a high-level pulse signal, it does not include information indicating the communication partner of the in-vehicle ECU 202A. Therefore, even if the relay device 101 receives the wake-up request R1, it cannot determine which of the on-board ECUs 202B, 202C, and 202D other than the on-board ECU 202A should be transitioned to the wake-up state. . The details of such issues will be explained below.
- FIG. 6 is a diagram illustrating an example of a sleep control sequence in an in-vehicle system according to a comparative example.
- the in-vehicle system according to the comparative example described below is different from the in-vehicle system according to the embodiment of the present disclosure in that the above problem occurs in sleep control.
- the vehicle, the in-vehicle system, and each device in the in-vehicle system are given the same reference numerals as in the embodiment of the present disclosure.
- the in-vehicle system 301 is a system installed in the vehicle 1 that can unlock doors by face authentication
- the in-vehicle ECU 202A is a face authentication ECU
- the in-vehicle ECU 202B is a door lock ECU.
- the relay device 101 and each in-vehicle ECU 202 are in a sleep state while the vehicle 1 is parked.
- step S1 in a situation where relay device 101 and on-board ECUs 202A, 202B, 202C, and 202D are in a sleep state (step S1), on-board ECU 202A transitions to a wake-up state.
- step S2 it is assumed that the in-vehicle ECU 202A transitions to the wake-up state due to successful face authentication and a need to request the in-vehicle ECU 202B to release the door lock.
- the in-vehicle ECU 202A transmits a wake-up request R1 to the relay device 101 (step S3).
- the relay device 101 receives the wake-up request R1 from the in-vehicle ECU 202A, and transitions to the wake-up state. More specifically, the state transition unit 62 in the relay device 101 transitions the communication circuit corresponding to the communication port 51A that received the wake-up request R1 from the off state to the on state (step S4).
- the relay device 101 and the in-vehicle ECU 202A establish a communication connection with each other by exchanging various information (step S5).
- the state transition unit 62 in the relay device 101 transitions the communication circuits corresponding to the communication ports 51B, 51C, and 51D other than the communication port 51A from the off state to the on state.
- the relay device 101 in the in-vehicle system 301 according to the comparative example establishes a communication connection with the in-vehicle ECU 202A, the information indicating the communication partner of the in-vehicle ECU 202A is not included in the wake-up request R1. , the communication partner of the in-vehicle ECU 202A cannot be specified (step S6).
- the relay device 101 transmits a wake-up request R2 to the in-vehicle ECUs 202B, 202C, and 202D (steps S7 and S8).
- the in-vehicle ECUs 202B, 202C, and 202D receive the wake-up request R2 from the relay device 101, and transition to the wake-up state (steps S9 and S10).
- the relay device 101 and the on-vehicle ECUs 202B, 202C, and 202D establish communication connections with each other by exchanging various information (step S11).
- the in-vehicle ECUs 202A and 202B communicate with each other.
- the relay device 101 receives a frame destined for the in-vehicle ECU 202B from the in-vehicle ECU 202A, it refers to the address table M and specifies "#2" as the port number corresponding to the frame. Then, the relay device 101 transmits the received frame to the destination in-vehicle ECU 202B from the communication port 51B corresponding to the specified port number "#2" (step S12).
- the in-vehicle ECUs 202C and 202D which are not communication partners of the in-vehicle ECU 202A, stop transmitting NM messages when their own sleep conditions are satisfied, if they do not communicate with other in-vehicle ECUs 202. If the in-vehicle ECUs 202C and 202D do not receive an NM message from another device in the in-vehicle system 301 within a predetermined period of time after stopping transmission of the NM message, the in-vehicle ECUs 202C and 202D transition to a sleep state (step S13).
- the relay device 101 upon receiving a wake-up request from the in-vehicle ECU 202A, the relay device 101 causes the other in-vehicle ECUs 202B, 202C, and 202D that are in the sleep state to transition to the wake-up state. Therefore, in the in-vehicle system 301 according to the comparative example, extra power is consumed when the in-vehicle ECUs 202C and 202D, which are not communication partners of the in-vehicle ECU 202A, transition to the wake-up state.
- the relay device 101 according to the embodiment of the present disclosure solves this problem with the following configuration and operation.
- storage unit 54 stores a table (hereinafter also referred to as "network table T") showing the correspondence between communication port 51 and the network to which in-vehicle ECU 202 belongs.
- the network table T is an example of correspondence information.
- FIG. 7 is a diagram illustrating an example of a network table held by a relay device according to an embodiment of the present disclosure.
- network table T1 shows the correspondence between communication ports 51 and VLANs. More specifically, the network table T1 shows the correspondence between the port number of the communication port 51 and the VLAN-ID of the in-vehicle ECU 202.
- VLAN-ID of the on-vehicle ECUs 202A and 202B is "10"
- the VLAN-ID of the on-vehicle ECUs 202C and 202D is "20". Therefore, in network table T1, VLAN-ID "10” and port numbers “#1” and “#2” are associated with each other, and VLAN-ID "20” and port numbers “#3” and “#4" are associated with each other. are associated.
- the in-vehicle ECU 202A is an example of a first in-vehicle device
- the in-vehicle ECU 202B is an example of a second in-vehicle device.
- sleep control unit 63 when sleep control unit 63 receives wake-up request R1 from in-vehicle ECU 202A and transitions its own relay device 101 to the wake-up state, sleep control unit 63 performs the following based on network table T1:
- the destination of the wake-up request R2 is selected from among the in-vehicle ECUs 202B, 202C, and 202D other than the in-vehicle ECU 202A.
- the sleep control unit 63 selects the in-vehicle ECU 202B that belongs to the same VLAN as the VLAN corresponding to the communication port 51A to which the in-vehicle ECU 202A is connected, based on the network table T1.
- the sleep control unit 63 determines that the communication circuit corresponding to the communication port 51 having the port number indicated by the reception notification received from the switch unit 52 has transitioned from the off state to the on state.
- the switch section 52 notifies the sleep control section 63 of the port number "#1" of the communication port 51A that received the wake-up request R1, and the sleep control section 63 turns on the communication circuit corresponding to the communication port 51A. It is determined that the state has transitioned.
- the sleep control unit 63 refers to the network table T1, identifies “10” as the same VLAN-ID as the VLAN-ID corresponding to the port number “#1” notified from the switch unit 52, and sets the VLAN-ID “#2” is specified as another port number corresponding to “10”. Thereby, the sleep control unit 63 identifies the in-vehicle ECU 202B connected to the communication port 51B with the port number "#2" as the communication partner of the in-vehicle ECU 202A. That is, the sleep control unit 63 selects the vehicle ECU 202B from the vehicle ECUs 202B, 202C, and 202D as the destination of the wake-up request R2. The sleep control unit 63 then transitions the communication circuit corresponding to the communication port 51B from the off state to the on state.
- the sleep control unit 63 transmits a wake-up request R2 to the vehicle-mounted ECU 202B to cause the vehicle-mounted ECU 202B to transition to the wake-up state.
- the sleep control unit 63 transmits the wake-up request R2 to the in-vehicle ECU 202B via the switch unit 52 and the communication port 51B.
- the in-vehicle ECU 202B receives the wake-up request R2 from the relay device 101 and transitions to the wake-up state.
- the relay device 101 and the in-vehicle ECU 202B establish a communication connection with each other by exchanging various information.
- the vehicle ECU 202A After establishing a communication connection between the relay device 101 and the vehicle ECU 202B, the vehicle ECU 202A periodically or irregularly transmits a frame addressed to the vehicle ECU 202B to the relay device 101.
- the switch unit 52 in the relay device 101 receives a frame addressed to the in-vehicle ECU 202B, that is, a frame including the destination MAC address "MAC-B", the switch unit 52 refers to the address table M shown in FIG. Specify "#2" as the corresponding port number. Then, the relay device 101 transmits a frame addressed to the in-vehicle ECU 202B from the communication port 51B. Thereby, the in-vehicle ECU 202A can communicate with the in-vehicle ECU 202B via the relay device 101.
- the relay device 101 holds a network table T1 created in advance in the storage unit 54.
- the relay device 101 acquires the VLAN-ID stored in the tag field of the frame received from each in-vehicle ECU 202, and based on the acquired VLAN-ID and the port number of the communication port 51 that received the frame.
- the network table T1 may be created.
- the sleep control unit 63 is not limited to a configuration in which the on-vehicle ECU 202B, which is the destination of the wake-up request R2, is selected from among the on-vehicle ECUs 202B, 202C, and 202D other than the on-vehicle ECU 202A, based on the network table T1.
- the sleep control unit 63 may select a plurality of in-vehicle ECUs 202 that are part of the in-vehicle ECUs 202B, 202C, and 202D other than the in-vehicle ECU 202A.
- FIG. 8 is a diagram illustrating an example of a sleep control sequence in the in-vehicle system according to the embodiment of the present disclosure.
- step S101 when relay device 101 and on-vehicle ECUs 202A, 202B, 202C, and 202D are in a sleep state (step S101), on-vehicle ECU 202A transitions to a wake-up state (step S102).
- the in-vehicle ECU 202A transmits a wake-up request R1 to the relay device 101 (step S103).
- the relay device 101 receives the wake-up request R1 from the in-vehicle ECU 202A, and transitions to the wake-up state. More specifically, the state transition unit 62 in the relay device 101 transitions the communication circuit corresponding to the communication port 51A that received the wake-up request R1 from the off state to the on state (step S104).
- the relay device 101 and the in-vehicle ECU 202A establish a communication connection with each other by exchanging various information (step S105).
- the relay device 101 refers to the network table T1 in the storage unit 54 and selects the in-vehicle ECU 202B from among the in-vehicle ECUs 202B, 202C, and 202D other than the in-vehicle ECU 202A as the destination of the wake-up request R2. Specifically, as described above, the sleep control unit 63 in the relay device 101 selects a VLAN corresponding to the communication port 51A to which the in-vehicle ECU 202A is connected, from among the in-vehicle ECUs 202B, 202C, and 202D, based on the network table T1. The in-vehicle ECU 202B belonging to the same VLAN is selected. Then, the sleep control unit 63 turns on the communication circuit corresponding to the communication port 51B to which the in-vehicle ECU 202B is connected (step S106).
- the relay device 101 transmits a wake-up request R2 to the in-vehicle ECU 202B (step S107).
- the in-vehicle ECU 202B receives the wake-up request R2 from the relay device 101, and transitions to the wake-up state (step S108).
- the relay device 101 and the in-vehicle ECU 202B establish a communication connection with each other by exchanging various information (step S109).
- the in-vehicle ECUs 202A and 202B communicate with each other.
- the relay device 101 receives a frame destined for the in-vehicle ECU 202B from the in-vehicle ECU 202A, it refers to the address table M and specifies "#2" as the port number corresponding to the frame. Then, the relay device 101 transmits the received frame to the destination in-vehicle ECU 202B from the communication port 51B corresponding to the specified port number "#2" (step S110).
- the relay device 101 does not cause the in-vehicle ECU 202 in the sleep state of the in-vehicle ECUs 202C and 202D to transition to the wake-up state, so that power consumption in the in-vehicle ECU 202 can be suppressed.
- FIG. 9 is a diagram illustrating a configuration of modification example 1 of the in-vehicle system according to the embodiment of the present disclosure.
- the VLAN-ID of each in-vehicle ECU 202 is "10". In this way, in the first modification, it is assumed that the VLAN-IDs of each in-vehicle ECU 202 are the same.
- the in-vehicle ECU 202 constitutes a PN (Partial Network) defined by AUTOSAR.
- the plurality of in-vehicle ECUs 202 form a PNC, which is an example of a network, according to AUTOSAR.
- PNC Physical Network
- in-vehicle ECUs 202A and 202B and in-vehicle ECUs 202C and 202D belong to different PNCs.
- the in-vehicle ECU 202 selects a communication partner from among the in-vehicle ECUs 202 belonging to the same PNC.
- the ID of the PNC to which the on-vehicle ECUs 202A and 202B belong that is, the PN information
- the PN information of the on-vehicle ECUs 202C and 202D is "2”.
- the PN information is stored in the NM message, for example.
- FIG. 10 is a diagram showing a network table held by the relay device of Modification 1 of the in-vehicle system according to the embodiment of the present disclosure.
- storage unit 54 stores a network table T2 indicating the correspondence between communication ports 51 and PNCs. More specifically, the network table T2 shows the correspondence between the port number of the communication port 51 and the PN information of the in-vehicle ECU 202.
- PN information "1" is associated with port numbers “#1” and “#2”
- PN information "2" is associated with port numbers "#3" and “#4". ing.
- the network table T2 may show a VLAN-ID corresponding to each port number, that is, VLAN-ID "10".
- the sleep control unit 63 selects the in-vehicle ECU 202B that belongs to the same PNC as the PNC corresponding to the communication port 51A to which the in-vehicle ECU 202A is connected from among the in-vehicle ECUs 202B, 202C, and 202D.
- the sleep control unit 63 refers to the network table T2, specifies “1” as the same PN information as the PN information corresponding to the port number “#1” notified from the switch unit 52, and sets the PN information. "#2" is specified as another port number corresponding to "1". Thereby, the sleep control unit 63 identifies the in-vehicle ECU 202B connected to the communication port 51B with the port number "#2" as the communication partner of the in-vehicle ECU 202A. That is, the sleep control unit 63 selects the vehicle ECU 202B from the vehicle ECUs 202B, 202C, and 202D as the destination of the wake-up request R2.
- the relay device 101 holds a network table T2 created in advance in the storage unit 54.
- the relay device 101 acquires the PN information stored in the NM message received from each in-vehicle ECU 202, and creates the network table T2 based on the acquired PN information and the port number of the communication port 51 that received the NM message. may be created.
- FIG. 11 is a diagram illustrating a configuration of a second modification of the in-vehicle system according to the embodiment of the present disclosure.
- in-vehicle ECUs 202A and 202B and in-vehicle ECUs 202C and 202D belong to different VLANs. Furthermore, in the second modification, similarly to the first modification, the on-vehicle ECUs 202A and 202B and the on-vehicle ECUs 202C and 202D belong to different PNCs.
- FIG. 12 is a diagram showing a network table held by the relay device of Modification 2 of the in-vehicle system according to the embodiment of the present disclosure.
- the storage unit 54 stores a network table T3 indicating the correspondence between the communication ports 51, VLANs, and PNCs. More specifically, the network table T3 shows the correspondence between the port number of the communication port 51, the VLAN-ID of the in-vehicle ECU 202, and the PN information of the in-vehicle ECU 202. In the network table T3, the PN information of each in-vehicle ECU 202 belonging to the same VLAN is the same.
- VLAN-ID "10” and PN information "1” are associated with port numbers “#1” and “#2”
- VLAN-ID "20” and PN information "2" are associated with port numbers “#1” and “#2”.
- ” are associated with port numbers “#3” and “#4”.
- the sleep control unit 63 selects an in-vehicle ECU 202 that belongs to the same PNC as the PNC corresponding to the communication port 51A, rather than an in-vehicle ECU 202 that belongs to the same VLAN as the VLAN corresponding to the communication port 51A to which the in-vehicle ECU 202A is connected. be selected preferentially.
- the sleep control unit 63 refers to the network table T3, specifies “1” as the same PN information as the PN information corresponding to the port number “#1” notified from the switch unit 52, and sets the PN information. "#2" is specified as another port number corresponding to "1". Thereby, the sleep control unit 63 identifies the in-vehicle ECU 202B connected to the communication port 51B with the port number "#2" as the communication partner of the in-vehicle ECU 202A. That is, the sleep control unit 63 selects the vehicle ECU 202B from the vehicle ECUs 202B, 202C, and 202D as the destination of the wake-up request R2.
- FIG. 13 is a diagram illustrating a configuration of modification 3 of the in-vehicle system according to the embodiment of the present disclosure.
- in-vehicle ECUs 202A and 202C and in-vehicle ECUs 202B and 202D belong to different VLANs.
- the VLAN-IDs of the in-vehicle ECUs 202A and 202C are "10"
- the VLAN-IDs of the in-vehicle ECUs 202B and 202D are "20”.
- in Modification 3 similarly to Modifications 1 and 2, in-vehicle ECUs 202A and 202B and in-vehicle ECUs 202C and 202D belong to different PNCs.
- FIG. 14 is a diagram showing a network table held by the relay device of Modification 3 of the in-vehicle system according to the embodiment of the present disclosure.
- the storage unit 54 stores a network table T4 indicating the correspondence between the communication ports 51, VLANs, and PNCs. More specifically, the network table T4 shows the correspondence between the port number of the communication port 51, the VLAN-ID of the in-vehicle ECU 202, and the PN information of the in-vehicle ECU 202. In the network table T4, the PN information of each in-vehicle ECU 202 belonging to the same VLAN is different from each other.
- VLAN-ID "10” and PN information "1” are associated with port number "#1”
- VLAN-ID "20” and PN information "1” are associated with port number "#1”.
- #2 VLAN-ID "10” and PN information "2” are associated with port number "#3”
- VLAN-ID "20” and PN information "2” are associated with "#4". are associated.
- the sleep control unit 63 selects an in-vehicle ECU 202C that belongs to the same PNC as the PNC corresponding to the communication port 51A, rather than an in-vehicle ECU 202B that belongs to the same VLAN as the VLAN corresponding to the communication port 51A to which the in-vehicle ECU 202A is connected. be selected preferentially.
- the sleep control unit 63 refers to the network table T4 and identifies “10” as the same VLAN-ID as the VLAN-ID corresponding to the port number “#1” notified from the switch unit 52, “#2” is specified as another port number corresponding to VLAN-ID “10”. Further, the sleep control unit 63 refers to the network table T4, identifies “1” as the same PN information as the PN information corresponding to the port number “#1” notified from the switch unit 52, and sets the PN information “1” to the PN information “1”. ⁇ #3'' is specified as another port number corresponding to .
- the sleep control unit 63 transmits the wake-up request R2 to the in-vehicle ECU 202B connected to the communication port 51C with the port number "#3" rather than the in-vehicle ECU 202B connected to the communication port 51B with the port number "#2".
- the in-vehicle ECU 202C is selected preferentially.
- the network table T is not limited to the network tables T1, T2, T3, and T4 described above.
- the network table T may be a table showing the correspondence between the port number of the communication port 51, which is the port number of the physical port, and the number of the logical port.
- the relay device 101 selects the on-board ECU 202B from the on-board ECUs 202B, 202C, and 202D other than the on-board ECU 202A as the destination of the wake-up request R2.
- Each process (each function) of the above-described embodiment is realized by a processing circuit including one or more processors.
- the processing circuit may include an integrated circuit or the like in which one or more memories, various analog circuits, and various digital circuits are combined.
- the one or more memories store programs (instructions) that cause the one or more processors to execute each of the above processes.
- the one or more processors may execute each of the above processes according to the program read from the one or more memories, or may execute each of the above processes according to a logic circuit designed in advance to execute each of the above processes. May be executed.
- the above processors include a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), and an FPGA (Field Programmer). various types that are compatible with computer control, such as mmable Gate Array) and ASIC (Application Specific Integrated Circuit). processor.
- the plurality of physically separated processors may cooperate with each other to execute each of the above processes.
- the processors installed in each of a plurality of physically separated computers cooperate with each other via networks such as a LAN (Local Area Network), a WAN (Wide Area Network), and the Internet to perform each of the above processes. May be executed.
- the above program may be installed in the above memory from an external server device etc.
- CD-ROM Compact Disc Read Only Memory
- DVD-ROM Digital Versatile Disk Read Only Memory
- semiconductors It may be distributed in a state stored in a recording medium such as a memory, and installed into the memory from the recording medium.
- a relay device used in an in-vehicle system comprising three or more in-vehicle devices, Equipped with a processing circuit,
- the processing circuit includes: When a first wake-up request is received from a first in-vehicle device of the three or more in-vehicle devices, transitioning the relay device in a sleep state to a wake-up state; A second wake-up request for selecting a second vehicle-mounted device from among the vehicle-mounted devices other than the first vehicle-mounted device and transitioning the second vehicle-mounted device to the wake-up state is sent to the second vehicle-mounted device.
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Abstract
Description
この出願は、2022年8月5日に出願された日本出願特願2022-125479号を基礎とする優先権を主張し、その開示のすべてをここに取り込む。
特許文献1に記載の技術を超えて、省電力機能を向上させることが可能な技術が望まれる。
本開示によれば、車載システムにおける省電力機能を向上させることができる。
最初に、本開示の実施形態の内容を列記して説明する。
図1は、本開示の実施の形態に係る車載システムの構成の一例を示す図である。
図2は、本開示の実施の形態に係る中継装置の構成の一例を示す図である。
中継装置101および車載ECU202は、ウェイクアップ状態からスリープ状態へ遷移し、また、スリープ状態からウェイクアップ状態へ遷移する。中継装置101および車載ECU202は、ウェイクアップ状態において、車載システム301における他の装置と通信を行い、スリープ状態において、車載システム301における他の装置との通信を停止する。ここで、スリープ状態とは、装置の一部の機能の停止、装置への電力供給の停止、または装置におけるクロック周波数の低下等により、ウェイクアップ状態よりも消費電力が小さい状態である。
再び図2を参照して、中継装置101における判断部61は、中継装置101のスリープ条件の成否、および中継装置101のウェイクアップ条件の成否を判断する。
状態遷移部62は、中継装置101をスリープ状態へ遷移させる。また、状態遷移部62は、中継装置101をウェイクアップ状態へ遷移させる。
スリープ制御部63は、車載ECU202をウェイクアップ状態へ遷移させる制御を行う。
ところで、中継装置101と3つ以上の車載ECU202とを備える車載システム301において、中継装置101および各車載ECU202がスリープ状態である場合が考えられる。この場合、ある車載ECU202が、他の車載ECU202と通信を行う必要が生じたことによりウェイクアップ状態へ遷移すると、ウェイクアップ要求R1を中継装置101へ送信する。ここでは、車載ECU202Aが、車載ECU202Bと通信を行うためにウェイクアップ状態へ遷移し、ウェイクアップ要求R1を中継装置101へ送信する例を説明する。
再び図2を参照して、記憶部54は、通信ポート51と車載ECU202が属するネットワークとの対応関係を示すテーブル(以下、「ネットワークテーブルT」とも称する。)を記憶する。ネットワークテーブルTは、対応情報の一例である。
図8は、本開示の実施の形態に係る車載システムにおけるスリープ制御のシーケンスの一例を示す図である。
図9は、本開示の実施の形態に係る車載システムの変形例1の構成を示す図である。
図11は、本開示の実施の形態に係る車載システムの変形例2の構成を示す図である。
図13は、本開示の実施の形態に係る車載システムの変形例3の構成を示す図である。
[付記1]
3つ以上の車載装置を備える車載システムにおいて用いられる中継装置であって、
処理回路を備え、
前記処理回路は、
前記3つ以上の車載装置のうちの第1の車載装置から第1のウェイクアップ要求を受信した場合、スリープ状態である前記中継装置をウェイクアップ状態へ遷移させ、
前記第1の車載装置以外の前記車載装置の中から第2の車載装置を選択し、前記第2の車載装置を前記ウェイクアップ状態へ遷移させるための第2のウェイクアップ要求を前記第2の車載装置へ送信する、中継装置。
11 イーサネットケーブル
51,51A,51B,51C,51D 通信ポート
52 スイッチ部
53 処理部
54 記憶部
61 判断部
62 状態遷移部
63 スリープ制御部
101 中継装置
202,202A,202B,202C,202D 車載ECU
301 車載システム
401 車載ネットワーク
Claims (7)
- 3つ以上の車載装置を備える車載システムにおいて用いられる中継装置であって、
前記3つ以上の車載装置のうちの第1の車載装置から第1のウェイクアップ要求を受信した場合、スリープ状態である前記中継装置をウェイクアップ状態へ遷移させる状態遷移部と、
前記第1の車載装置以外の前記車載装置の中から第2の車載装置を選択し、前記第2の車載装置を前記ウェイクアップ状態へ遷移させるための第2のウェイクアップ要求を前記第2の車載装置へ送信するスリープ制御部とを備える、中継装置。 - 前記中継装置は、さらに、
前記3つ以上の車載装置がそれぞれ接続される3つ以上の通信ポートと、
前記通信ポートと前記車載装置が属するネットワークとの対応関係を示す対応情報を記憶する記憶部とを備え、
前記スリープ制御部は、前記対応情報に基づいて前記第2の車載装置を選択する、請求項1に記載の中継装置。 - 前記対応情報は、前記通信ポートとVLAN(Virtual Local Area Network)との対応関係を示し、
前記スリープ制御部は、前記対応情報に基づいて、前記第1の車載装置が接続される前記通信ポートに対応するVLANと同じVLANに属する前記車載装置を前記第2の車載装置として選択する、請求項2に記載の中継装置。 - 前記対応情報は、前記通信ポートとPNC(Partial Network Cluster)との対応関係を示し、
前記スリープ制御部は、前記対応情報に基づいて、前記第1の車載装置が接続される前記通信ポートに対応するPNCと同じPNCに属する前記車載装置を前記第2の車載装置として選択する、請求項2に記載の中継装置。 - 前記対応情報は、前記通信ポートとVLANとPNCとの対応関係を示し、
前記スリープ制御部は、前記第1の車載装置が接続される前記通信ポートに対応するVLANと同じVLANに属する前記車載装置よりも、前記第1の車載装置が接続される前記通信ポートに対応するPNCと同じPNCに属する前記車載装置を前記第2の車載装置として優先的に選択する、請求項2に記載の中継装置。 - 3つ以上の車載装置を備える車載システムにおいて用いられる中継装置におけるスリープ制御方法であって、
前記3つ以上の車載装置のうちの第1の車載装置から第1のウェイクアップ要求を受信した場合、スリープ状態である前記中継装置をウェイクアップ状態へ遷移させるステップと、
前記第1の車載装置以外の前記車載装置の中から第2の車載装置を選択し、前記第2の車載装置を前記ウェイクアップ状態へ遷移させるための第2のウェイクアップ要求を前記第2の車載装置へ送信するステップとを含む、スリープ制御方法。 - 3つ以上の車載装置を備える車載システムにおいて用いられる中継装置において用いられるスリープ制御プログラムであって、
コンピュータを、
前記3つ以上の車載装置のうちの第1の車載装置から第1のウェイクアップ要求を受信した場合、スリープ状態である前記中継装置をウェイクアップ状態へ遷移させる状態遷移部と、
前記第1の車載装置以外の前記車載装置の中から第2の車載装置を選択し、前記第2の車載装置を前記ウェイクアップ状態へ遷移させるための第2のウェイクアップ要求を前記第2の車載装置へ送信するスリープ制御部、
として機能させるための、スリープ制御プログラム。
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| US19/099,507 US20260058841A1 (en) | 2022-08-05 | 2023-07-18 | Relay device, sleep control method, and sleep control program |
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| JP2026039683A (ja) | 2024-08-23 | 2026-03-09 | トヨタ自動車株式会社 | 電子制御装置、判定方法、判定プログラム、送信方法、送信プログラム |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180103121A1 (en) * | 2016-10-07 | 2018-04-12 | Hyundai Motor Company | Operation method of communication node for selective wake-up in vehicle network |
| WO2022102309A1 (ja) * | 2020-11-10 | 2022-05-19 | 株式会社デンソー | 通信装置 |
| JP7108064B1 (ja) * | 2021-02-02 | 2022-07-27 | 本田技研工業株式会社 | 車両制御システム |
Family Cites Families (3)
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|---|---|---|---|---|
| EP3570500B1 (en) * | 2018-05-15 | 2021-03-17 | Volvo Car Corporation | A communication network |
| US11511703B2 (en) | 2018-11-13 | 2022-11-29 | Denso International America, Inc. | Driver personalization for vehicle-sharing fleet |
| JP7480675B2 (ja) | 2020-10-29 | 2024-05-10 | 株式会社デンソー | 中継装置 |
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- 2023-07-18 WO PCT/JP2023/026255 patent/WO2024029323A1/ja not_active Ceased
- 2023-07-18 CN CN202380056419.6A patent/CN119631359A/zh active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180103121A1 (en) * | 2016-10-07 | 2018-04-12 | Hyundai Motor Company | Operation method of communication node for selective wake-up in vehicle network |
| WO2022102309A1 (ja) * | 2020-11-10 | 2022-05-19 | 株式会社デンソー | 通信装置 |
| JP7108064B1 (ja) * | 2021-02-02 | 2022-07-27 | 本田技研工業株式会社 | 車両制御システム |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2024022118A (ja) | 2024-02-16 |
| US20260058841A1 (en) | 2026-02-26 |
| CN119631359A (zh) | 2025-03-14 |
| JP7828257B2 (ja) | 2026-03-11 |
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