US Patent No. 10,462,785

METHOD AND APPARATUS FOR REAL-TIME TRANSMISSION IN A FIELD BROADBAND BUS ARCHITECTURE OVER AN INDUSTRIAL INTERNET


Patent No. 10,462,785
Issue Date October 29, 2019
Title Method And Apparatus For Real-time Transmission In A Field Broadband Bus Architecture Over An Industrial Internet
Inventorship Zhihui Shao, Beijing (CN)
Jing Shi, Beijing (CN)
Hui Zhong, Beijing (CN)
Yi Huang, Beijing (CN)
Assignee KYLAND TECHNOLOGY CO., LTD, Beijing (CN)

Claim of US Patent No. 10,462,785

1. A method for real-time transmission in a field broadband bus architecture over an industrial internet, wherein the field broadband bus architecture over an industrial internet comprises: 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 using an Orthogonal Frequency Division Multiplexing (OFDM) technology, and the respective bus terminals communicate with each other, also using the OFDM technology, and sub-carriers occupied by the respective bus terminals do not interfere with each other; and the method comprises:when the bus terminal initially accesses, receiving, by the bus controller, an access request transmitted by the bus terminal, wherein the access request comprises at least a fixed rate service transmission demand of the bus terminal;
allocating, by the bus controller, a preset number of sub-carriers for the bus terminal, and dividing the preset number of sub-carriers into the fixed-rate service resource blocks and the variable-rate service resource blocks in a time domain according to the fixed-rate service transmission demand of the bus terminal, wherein the fixed-rate service is transmitted over the fixed-rate service resource blocks, and the variable-rate service is transmitted over the variable-rate service resource blocks; and
determining the fixed-rate service resource blocks as an allocation result of the resource blocks of the fixed-rate service of the bus terminal, and transmitting the result of allocating the resource blocks of the fixed-rate service to the bus terminal so that the bus terminal transmits the fixed-rate service according to the result of allocating the resource blocks of the fixed-rate service;
receiving, by the bus controller, a fixed-rate service transmitted by the bus terminal in an uplink subframe over pre-allocated fixed-rate service resource blocks; and
receiving, by the bus controller, a variable-rate service transmission demand transmitted by the bus terminal in the uplink subframe during transmission of the data service at the physical layer, allocating resource blocks for a variable-rate service of the bus terminal among pre-allotted variable-rate service resource blocks according to the variable-rate service transmission demand, and transmitting a result of allocating the resource blocks to the bus terminal so that the bus terminal transmits the variable-rate service according to the result of allocating the resource blocks.