Abstract: The disclosure relates to a method and apparatus for real-time transmission in a field broadband bus architecture over an industrial internet, where the field broadband bus architecture over an industrial internet includes: a bus controller, at least one bus terminal, and a two-wire bus over which the bus controller and the bus terminal are connected to constitute a network, the bus controller communicates with any one bus terminal, and the respective bus terminals communicate with each other, using the Orthogonal Frequency Division Multiplexing technology, and sub-carriers occupied by the respective bus terminals do not interfere with each other; and the method includes: the bus controller receives a fixed-rate service transmitted by the bus terminal in an uplink subframe over pre-allocated fixed-rate service resource blocks; and allocates resource blocks for a variable-rate service of the bus terminal in a real-time manner among variable-rate service resource blocks.

Abstract: 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 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 so that all the devices in the bus system are synchronized.

Abstract: The disclosure relates to a method and apparatus for real-time transmission in a field broadband bus architecture over an industrial internet, where the field broadband bus architecture over an industrial internet includes: a bus controller, at least one bus terminal, and a two-wire bus over which the bus controller and the bus terminal are connect to constitute a network, the bus controller communicates with any one bus terminal, and the respective bus terminals communicate with each other, using the OFDM technology, and sub-carriers occupied by the respective bus terminals do not interfere with each other; and the method includes: the bus controller receives a fixed-rate service transmitted by the bus terminal in an uplink subframe over pre-allocated fixed-rate service resource blocks; and allocates resource blocks for a variable-rate service of the bus terminal in a real-time manner among variable-rate service resource blocks.

Abstract: 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 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 so that all the devices in the bus system are synchronized.