Mobile radio sets are installed on front and rear parts of a mobile body, one of fixed radio sets is set as a synchronization base station, and the other radio sets including the mobile radio sets are set as synchronization packet relay stations. Each of the relay stations in a synchronization acquiring mode makes a transition to a ground synchronization maintaining mode higher in synchronization accuracy when receiving a synchronization packet without the intervention of the mobile radio sets, or makes a transition to an on-vehicle synchronization maintaining mode lower in synchronization accuracy when receiving a synchronization packet with the intervention of the mobile radio sets, and the relay station in the on-vehicle synchronization maintaining mode makes a transition to the ground synchronization maintaining mode when receiving a synchronization packet from a relay station in the ground synchronization maintaining mode.
WIRELESS COMMUNICATION NETWORK SYSTEM SYNCHRONIZATION METHOD
SYNCHRONISATIONSVERFAHREN FÜR EIN DRAHTLOSES KOMMUNIKATIONSNETZSYSTEM
PROCÉDÉ DE SYNCHRONISATION DE SYSTÈME DE RÉSEAU DE COMMUNICATION SANS FIL
2018-07-25
Patent
Electronic Resource
English
Wireless communication network system synchronization method
European Patent Office | 2016
|Communication device cascaded network and internal synchronization method
European Patent Office | 2017