System and method for time synchronizing nodes in an...

Details System and method for time synchronizing nodes in an... System and method for time synchronizing nodes in an...

2004-12-17

2009-11-24

Patel, Ajit (Department: 2617)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S516000

Reexamination Certificate

active

07623552

ABSTRACT:
A system and method for time synchronizing nodes in a switch fabric network of a vehicle. A synchronization request message is transmitted from a requesting node to a neighboring node. At the time the synchronization request message is sent, the requesting node will store a unique message identification associated with the request message as well as a first timestamp that is associated with the time that the synchronization request message was transmitted by the requesting node. The neighboring node will receive the synchronization request message and store a second timestamp associated with the time that the synchronization request message was received by the neighboring node. Thereafter, the neighboring node will transmit to the requesting node a synchronization response message that includes the message identification and the second timestamp. The requesting node will then calculate a timer offset value that is based on the first timestamp and the second timestamp. The timer offset values may then be shared with other nodes in the network so that a summed offset may be used to transmit network messages across a plurality of nodes.

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