RSU synchronization method and a synchronization pulse width modulated output based integration

The present invention provides a synchronization method for synchronizing and RSU based integrated pulse width modulated output. The roadside unit comprises: a setting module, configured to set the master RSU RSU RSU or master; pulse width modulation output module is provided on the processor of the RSU ; a first synchronization signal output and a signal output conversion module, wherein, when the module is provided RSU RSU set as the master, the pulse width modulated output module generates a first synchronizing signal, and outputs the generated signal conversion module converts a signal output module receives a first synchronization signal, converts the received first synchronization signal to the second synchronizing signal and the second synchronization signal to the non-anchor RSU, thereby using the non-anchor RSU the second synchronization signal for synchronization.