Patent ID: 7912094
Filing Date: 2011-03-22
Classification: H04J,H04L

Abstract:
1. A method for clock synchronization in a braided ring network comprising a plurality of nodes, wherein at least two nodes of the plurality of nodes comprise a self-checking pair of a first node and a second node, the method comprising: determining at the first node when a first rendezvous message is received from the second node; when the first rendezvous message is received from the second node, calculating at the first node a time difference between a send instance of the first rendezvous message and a local time; when the time difference is not greater than a reference bound, calculating at the first node a common sending point for transmitting a first synchronization message, wherein the common sending point is calculated based on the time difference so that the first synchronization message is transmitted at approximately the same point in time as a second synchronization message transmitted from the second node; and selectively sending the first synchronization message from the first node to at least one node in the braided ring network other than the second node when the common sending point is reached based on the time difference.