PROCÉDÉ ET APPAREIL DE SYNCHRONISATION SUR LA BASE D'UNE ARCHITECTURE DE BUS À LARGE BANDE DE CHAMP D'INTERNET INDUSTRIEL

摘要

Embodiments of the disclosure disclose a synchronization method and apparatus on the basis of a field broadband bus architecture of an industrial Internet, where the bus architecture includes a bus controller, at least one bus terminal, and a two-wire bus, and the bus controller and the bus terminal are connected over the two-wire bus to constitute a bus system, the bus system communicating using the Orthogonal Frequency Division Multiplexing (OFDM) technology; and in the method, all the bus terminals refer to the bus controller, and when receiving a signal, and transmitting a signal, they adjust a clock for a received signal, and a signal to be transmitted, adaptively according to the downlink pilot signal so as to synchronize their clocks and symbols with the bus controller, and adjust a transmission time for the signal to be transmitted, according to a transmission delay so that all the devices in the bus system are synchronized to thereby provide an underlying guarantee for a transmission of a hard real-time service. Furthermore all the bus terminals in the bus system can be clock- synchronized and symbol-synchronized with the bus controller through physical-layer synchronization.