Cascading style time synchronization method in hybrid networks

The present invention discloses a cascading style time synchronization method in the hybrid networks. The cascading style time synchronization method comprises the following steps of (1) using a parent layer network time synchronization control station to send a time synchronization message to a shared adapter station; (2) after the shared adapter station receives the time synchronization message, analyzing to obtain the time Tsyn of a parent layer time system at the current moment, at the same time, recording the local time Tlocal_syn when the time synchronization message is received; (3) using the shared adapter station to carry out the time synchronization on the other stations in a sublayer network according to the time Tlocal of an own sublayer time system of the shared adapter station ; (4) after the shared adapter station receives a time marking message with a sublayer time system time mark tsub sent by any other station in the sublayer network, converting the time mark tsub into a time value TafterSyn