Abstract: A communication network system and a method of operating the same are disclosed. The communication network system includes a controller area network (CAN) controller that generates a CAN message, a gateway that receives the CAN message and generates a conversion message for Ethernet communication based on that preset conversion determination data is included in the CAN message, and an Ethernet controller that receives the conversion message.

Abstract: An operation method of a first communication node operating as a current reference grand master (GM) node in a vehicle network includes: transmitting a first synchronization message including a first reference time of the first communication node; receiving a first response message from a second communication node, the first response message including a first synchronization offset indicating a difference between a first local time of the second communication node and the first reference time; receiving a second response message from the second communication node, the second response message including a second synchronization offset indicating a difference between the first local time and a second reference time of a third communication node operating as a GM node; and determining the first communication node or the third communication node as a new reference GM node based on a result of comparison between the first synchronization offset and the second synchronization offset.

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 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 communication node in a vehicle network may include detecting a wake-up event; generating a wake-up signal including an identifier indicating a wake-up reason corresponding to the wake-up event based on a wake-up table, the wake-up table configured for storing the wake-up reason corresponding to the wake-up event, a target communication node configured to be woken up by the wake-up reason, and an operation power configured to be supplied to the target communication node; and transmitting the wake-up signal.

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 an end node including a physical (PHY) layer unit and a controller unit in a vehicle network includes: detecting, by the controller unit, a local event; in response to detecting the local event, transitioning an operation state of the controller unit from an OFF state to an ON state; transmitting, by the controller unit, to the PHY layer unit an indicator requesting to transmit a wake-up signal in accordance with the local event; and transmitting, by the PHY layer unit, the wake-up signal including an identifier of at least one end node required to be woken up by the local event.

Abstract: A communication node in a vehicle network may comprise a medium access control (MAC) layer; a physical (PHY) layer; a first port connected to the PHY layer; a second port connected to the PHY layer; and a switch controlling a connection between the first port and the second port. The switch may turn on or off the connection between the first port and the second port under control of the MAC layer.

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.

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 of configuring an in-vehicle network includes: receiving a first wake-up signal from a first controller among a plurality of controllers in a sleep mode by an Ethernet switch; activating the Ethernet switch according to the wake-up signal; determining a routing port according to a destination address of the Ethernet data received from the first controller; and transmitting a second wake-up signal of a second controller among the plurality of controllers through a physical-layer processing device included in the Ethernet switch corresponding to the determined routing port.

Abstract: An operation method of a first communication node operating as a current reference grand master (GM) node in a vehicle network may comprise: transmitting a first synchronization message including a first reference time of the first communication node; receiving a first response message from a second communication node, the first response message including a first synchronization offset indicating a difference between a first local time of the second communication node and the first reference time; receiving a second response message from the second communication node, the second response message including a second synchronization offset indicating a difference between the first local time and a second reference time of a third communication node operating as a GM node; and determining the first communication node or the third communication node as a first reference GM node based on a result of comparison between the first synchronization offset and the second synchronization offset.

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: 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 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: 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 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.