# US 2019/0357146 A1 · Method and apparatus for wake-up of communication node in vehicle network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0357146 A1 - Document ID: US20190357146A1 - Status: Published application - Kind: A1 - Application number: 16/412,658 - Filed: 2019-05-15 - Published: 2019-11-21 - Earliest claimed: 2018-05-15 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Dong Ok KIM; Kang Woon SEO; Jin Hwa YUN - Web page: https://patentgrep.com/patent/US20190357146A1 ## CPC - H04W 52/0274: {by switching on or off the equipment or parts thereof} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 4/48: for in-vehicle communication - H04W 52/0229: {where the received signal is a wanted signal} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## 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. ## Claims ### Claim 1 A communication node in a vehicle network, the communication node comprising: a physical (PHY) layer unit and a controller unit, wherein the PHY layer unit and the controller unit are configured to: detect, by the controller unit, a wake-up event; generate, by the PHY layer unit, 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 transmit, by the PHY layer unit, the wake-up signal. ### Claim 2 (depends on 1) The communication node according to claim 1, wherein the wake-up signal is a PHY layer signal generated by the PHY layer unit of the communication node. ### Claim 3 (depends on 1) The communication node according to claim 1, wherein the wake-up table further stores a minimum power to be supplied to the target communication node. ### Claim 4 (depends on 1) The communication node according to claim 1, wherein the wake-up table is stored in a memory of the PHY layer unit of the communication node. ### Claim 5 (depends on 1) The communication node according to claim 1, wherein the PHY layer unit and the controller unit are further configured to: after the detecting of the wake-up event, operate, by the controller unit, in an ON state based on the wake-up event; wake up, by the controller unit, the PHY layer unit of the communication node; and transmit, by the controller unit, information on the wake-up event to the PHY layer unit, and wherein the wake-up signal is generated and transmitted by the PHY layer unit. ### Claim 6 An operation method of a switch in a vehicle network, the operation method comprising: receiving a wake-up signal including an identifier indicating a wake-up reason; identifying a target end node to be woken up by the wake-up reason according to a wake-up table, the wake-up table configured for storing a wake-up event corresponding to the wake-up reason, the target end node to be woken up by the wake-up reason, and an operation power configured to be supplied to the target end node; and transmitting the wake-up signal through a port to which the identified target end node is connected. ### Claim 7 (depends on 6) The operation method according to claim 6, wherein the wake-up signal is a physical (PHY) layer signal. ### Claim 8 (depends on 6) The operation method according to claim 6, wherein the wake-up table further stores a minimum power to be supplied to the target end node. ### Claim 9 (depends on 6) The operation method according to claim 6, further including: supplying the operation power for the identified target end node according to the wake-up table through the port to which the identified target end node is connected. ### Claim 10 (depends on 6) The operation method according to claim 6, wherein the wake-up table is stored in a memory of a PHY layer unit of the switch. ### Claim 11 (depends on 6) The operation method according to claim 6, wherein the switch includes a power sourcing equipment (PSE), the switch is connected to end nodes through data lines, and the wake-up signal and the operation power are transmitted to the end nodes through the data lines. ### Claim 12 (depends on 6) The operation method according to claim 6, further including: waking up, by a PHY layer unit of the switch receiving the wake-up signal, a controller unit of the switch. ### Claim 13 (depends on 12) The operation method according to claim 12, wherein the waking up is performed through a management data input/output (MDIO) interface or a media independent interface (xMII) formed between the PHY layer unit and the controller unit. ### Claim 14 An operation method of a first communication node including a physical (PHY) layer unit and a controller unit in a vehicle network, the operation method comprising: receiving a wake-up signal including an identifier indicating a wake-up reason from a second communication node; receiving an operation power from the second communication node; identifying at least a target communication node configured to be woken up by the wake-up reason according to a wake-up table, the wake-up table configured for storing the wake-up reason corresponding to the wake-up event, the at least a target communication node configured to be woken up by the wake-up reason, and a power to be supplied by the first communication node; and in a response to determining that the first communication node belongs to the at least a target communication node, waking up the controller unit by the PHY layer unit, and transmitting the wake-up signal through a port to which another target communication node is connected. ### Claim 15 (depends on 14) The operation method according to claim 14, further including: supplying the power according to the wake-up table through the port to which the another target communication node is connected. ### Claim 16 (depends on 14) The operation method according to claim 14, wherein the wake-up signal is a physical (PHY) layer signal. ### Claim 17 (depends on 14) The operation method according to claim 14, wherein the wake-up table further stores a minimum power to be supplied to the at least a target end node. ### Claim 18 (depends on 14) The operation method according to claim 14, wherein the wake-up table is stored in a memory of a PHY layer unit of the first communication node. ### Claim 19 (depends on 14) The operation method according to claim 14, wherein the first communication node includes a powered device (PD) and a power sourcing equipment (PSE), the first communication node is connected to communication nodes through data lines, and the wake-up signal and the operation power are transmitted to the communication nodes through the data lines. ### Claim 20 (depends on 14) The operation method according to claim 14, wherein the waking up is performed through a management data input/output (MDIO) interface or a media independent interface (xMII) formed between the PHY layer unit and the controller unit.