Real-time transmission method and apparatus based on industrial internet fieldbus architecture

摘要

The disclosure relates to the field of industry communications, and particularly 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. In this way, the OFDM technology is introduced to the industrial field bus, and the data services and the channel resources are divided, to thereby transmit the data reliably at a high speed and in a real-time manner.