Abstract: An operation method of a first communication node among a plurality of communication nodes included in an Ethernet-based vehicle network includes: receiving a first message indicating an operation of a first function of a vehicle from a second communication node among the plurality of communication nodes; determining a third communication node performing a second function corresponding to the first function among the plurality of communication nodes; determining at least one communication node providing data related to the second function among the plurality of communication nodes; and configuring port mirroring for the first function such that a second message received from the at least one communication node is mirrored to the third communication node.

Abstract: An operation method of a communication node in a vehicle network may include detecting a local event; transitioning an operation mode of the communication node from a sleep mode to a normal mode when the local event is detected; generating a wake-up signal including a wake-up pattern corresponding to the local event; and transmitting the wake-up signal.

Abstract: A method for operating a first communication node connected to an in-vehicle network is provided. The method comprises generating a header including a count field indicating a wraparound count for a presentation time of contents and a timestamp field indicating the presentation time, generating a payload field including the contents, and transmitting a frame including the header and the payload field to a second communication node connected to the in-vehicle network.

Abstract: A network diagnosis method and apparatus are disclosed. An operation method of a first communication node includes checking whether each of communication nodes connected to the first communication node are in a fault state based on a first message transmitted between the communication nodes and a first response message, which is a response to the first message and generating a diagnosis response message including identification information of the communication node that is in a fault state or normal state. Accordingly, network performance may be enhanced.

Abstract: An error recovery method performed in an end node of an Ethernet-based vehicle network includes: detecting, by a physical (PHY) layer processor of a PHY layer of the end node, a physical error of a message, when the message is received at the PHY layer of the end node; detecting, by a controller processor of a controller included in the end node, a logical error of the message; and classifying, by the controller processor, types of the physical error and the logical error.

Abstract: A diagnostic method performed by a gateway in a vehicle network, wherein the gateway comprises a controller and a physical (PHY) layer which manages ports and is connected to the controller, may comprise receiving, by the controller, a diagnostic request message from an external diagnostic apparatus connected to a first port; receiving, by the controller, a security authentication request message from the external diagnostic apparatus when a security authentication is required for the diagnostic request message; verifying, by the controller, the security authentication request message; and activating, by the PHY layer, a port of the PHY layer connected to a target communication node to be diagnosed among the ports, under control of the controller, when verification of the security authentication request message is completed.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: An operation method of a first communication node among a plurality of communication nodes included in an Ethernet-based vehicle network may comprise receiving a first message requesting an update of software for a second communication node among the plurality of communication nodes; configuring a port for wake-up of the second communication node based on a path between the first communication node and the second communication node; transmitting a second message instructing wake-up of the second communication node via the configured port; and providing the update of the software to the second communication node based on the path corresponding to the configured port.

Abstract: An error recovery method performed in an end node of an Ethernet-based vehicle network includes: detecting, by a physical (PHY) layer processor of a PHY layer of the end node, a physical error of a message, when the message is received at the PHY layer of the end node; detecting, by a controller processor of a controller included in the end node, a logical error of the message; and classifying, by the controller processor, types of the physical error and the logical error.

Abstract: An operation method of a first communication node among a plurality of communication nodes included in an Ethernet-based vehicle network may include steps of measuring a first link delay for performing time synchronization with a second communication node included in the plurality of communication nodes; calculating a difference between the first link delay and an average value of a plurality of link delays measured before the measurement of the first link delay; comparing the calculated difference with a first threshold value for controlling a link delay measurement cycle for the second communication node; and controlling the link delay measurement cycle for the second communication node based on the comparison result.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: An operation method of a first end node constituting an Ethernet-based vehicle network includes receiving a first beacon from a second end node, the beacon including first configuration information of a first main-cycle including a plurality of sub-cycles each of which includes N time slots; transmitting a signal in a time slot corresponding to an identifier of the first end node among the N time slots within a sub-cycle # k of the plurality of sub-cycles; and transmitting a signal in a time slot corresponding to the identifier of the first end node among the N time slots in a sub-cycle # (k+1) consecutive with the sub-cycle # k of the plurality of sub-cycles.

Abstract: An operation method of a first end node in a vehicle network supporting a PLCA function is provided. The method includes performing a monitoring operation in a first time interval configured for communication of the first end node and detecting a transmission request signal transmitted from a second end node by the monitoring operation. In response to detecting the transmission request signal, a transmission operation of the first end node in the first time interval is stopped. The first time interval is used for communication of a second end node instead of the first end node.

Abstract: An operation method of a first communication node constituting an Ethernet-based vehicle network of a vehicle may comprise waking up by transitioning from a sleep state to a ready state; preventing transmission of network requests to other communication nodes connected to the Ethernet-based vehicle network; and performing update of software. Thus, only a target end node among a plurality of end nodes connected to the Ethernet-based vehicle network can be woken up for update of software so as to reduce power consumption of the vehicle due to the update of software. Also, abnormal operations due to the update of software can be prevented by allowing the update of software to be performed only while the vehicle is not running.

Abstract: An operation method of a first communication node in an Ethernet-based vehicle network includes identifying a link status between the first communication node and each of a plurality of communication nodes included in the vehicle network; receiving a first frame from a second communication node whose link status is normal among the plurality of communication nodes; identifying a first time difference between a local time of the first communication node and a time stamp of the first frame; and determining a synchronization error between the first communication node and the second communication node based on the first time difference.

Abstract: An operation method of a first switch, among a plurality of switches in a vehicle network including the plurality of switches connected through a bus line in a bus topology, may include receiving a diagnostic request message from an on-board diagnostic (OBD) apparatus through the bus line; performing a diagnostic operation indicated by the diagnostic request message; and transmitting a result of the diagnostic operation to the OBD apparatus through the bus line.

Abstract: An operation method of a communication node in an Ethernet-based vehicle network, the communication node including a regulator, a physical (PHY) layer unit, and a processor, includes outputting, by the processor, a first signal to initiate a supply of power to the communication node; outputting, by the processor, a second signal to initiate a transition of the communication node from a normal mode to a sleep mode; and transitioning, by the PHY layer unit, the communication node from the normal mode to the sleep mode when the second signal is received at the PHY layer unit from the processor.

Abstract: An operation method of a first communication node among a plurality of communication nodes included in an Ethernet-based vehicle network may include steps of measuring a first link delay for performing time synchronization with a second communication node included in the plurality of communication nodes; calculating a difference between the first link delay and an average value of a plurality of link delays measured before the measurement of the first link delay; comparing the calculated difference with a first threshold value for controlling a link delay measurement cycle for the second communication node; and controlling the link delay measurement cycle for the second communication node based on the comparison result.

Abstract: Methods for time synchronization among communication nodes in a vehicle network are disclosed. An operation method of a first communication node includes: transmitting a first frame requesting verification of time synchronization to a second communication node; receiving a second frame including information indicating a link delay time of the second communication node from the second communication node; receiving a third frame including information indicating a transmission time of the second frame from the second communication node; and verifying time synchronization between the first and second communication nodes based on the information included in the received second and third frames.

Abstract: An operation method of a first communication node comprises: receiving a first frame from a second communication node; obtaining a destination address of the first frame; and transmitting a second frame including an indicator for indicating an occurrence of an error in the first frame to a communication node corresponding to a source address of the first frame, when a port corresponding to the destination address does not exist in a routing table.