Industrial time sensitive network multilevel security data scheduling method

Abstract

The invention relates to an industrial time sensitive network multilevel security data scheduling method, and belongs to the field of communication networks. The method comprises the steps that S1, agateway device is used as a network manager to allocate priorities for data frames sent by field nodes; S2, the industrial wireless network field nodes generate a data frame information table; S3, thenodes perform encryption of different strength grades on the data frames about to be sent, and update the data frame information table; S4, a TSN switching device builds a multilevel security data scheduling model, and comprises a data frame allocation module, a buffer queue module and a data frame scheduling module; the data frame distribution module divides a buffer queue into four grades of encryption waiting queues according to the data frame encryption grades; and S5, the data frame scheduling module performs internal scheduling on the data frames in the encryption waiting queues according to comprehensive priorities. The method meets the requirements of the determinacy of industrial wireless network data transmission and the real-time performance of high-priority data transmission.

Description

technical field [0001] The invention belongs to the field of communication networks, and relates to a multi-level security data scheduling method for an industrial time-sensitive network. Background technique [0002] At present, the network in the factory presents a "three-level" structure. According to the current division of factory management levels, the network is divided into three levels: "field level", "workshop level", and "factory / enterprise level". The network between each level Configuration and management policies are independent of each other. At the field level, the industrial field bus is widely used to connect on-site detection sensors, actuators and industrial controllers; the network communication at the workshop level is mainly to complete between controllers, between controllers and local or remote monitoring systems, and between controllers and industrial controllers. The communication connection between factory-level networks mainly adopts the industr...

AI Technical Summary

Problems solved by technology

However, if the encryption strength is too high, the data transmission efficiency will be reduced. If important data cannot be sent in time, coupled with the time consumption caused by high-strength encryption, the data transmission delay will increase; if the encryption strength is too low, it will make Important data security is too low and under attack

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