Method for time synchronization of domain based on time information of vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation, Industry-University Cooperation Foundation Hanyang University
InventorsSeong Jin Park, Woo Sub Kim, Ju Ho Lee, SungKwon Park
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Abstract
Disclosed are time synchronization methods for domains based on time information of a vehicle. A time synchronization method performed by a first end node belonging to a first domain of a vehicle includes: receiving a first frame including time information from the vehicle; changing the first end node to a grand master node of the first domain when the time information indicates a time of a universal time domain; and synchronizing a time of the grand master node with the time of the universal time domain.
Claims17
A time synchronization method performed by a first end node belonging to a first domain of a vehicle, the method comprising:
- receiving a first frame including time information from the vehicle;
- changing the first end node to a new grand master node of the first domain when the time information indicates a time of a universal time domain;
- and
- synchronizing a time of the new grand master node with the time of the universal time domain.
A time synchronization method performed by a first end node belonging to a first domain of a vehicle, the method comprising:
- receiving a plurality of frames from a plurality of grand master nodes belonging to the first domain;
- selecting a frame received from a grand master node having a highest priority among the plurality of grand master nodes based on priority information included in the respective plurality of frames, the selected frame including time information;
- and
- synchronizing a time of the first end node with a time indicated by the time information.
A time synchronization method performed by a first grand master node belonging to a first domain of a vehicle, the method comprising:
- receiving a frame from a second grand master node belonging to the first domain, the frame including priority information and time information;
- comparing a priority of the first grand master node with a priority of the second grand master node which is indicated by the priority information;
- and
- changing the first grand master node to an end node when the priority of the first grand master node is lower than the priority of the second grand master node.
Dependencies are inferred from the claim text.