IP layer data packet scheduling algorithm oriented to multi-service coexistence and deterministic network requirements in industrial Internet of Things

Abstract

The invention discloses an IP layer data packet scheduling algorithm oriented to multi-service coexistence and deterministic network requirements in an industrial internet of things, and belongs to the technical field of real-time data transmission and multi-network convergence of the industrial internet of things. An existing data packet scheduling algorithm lacks analysis of the coexistence problem of continuous periodic data and discrete control data in the industrial Internet of Things. According to the algorithm, the priorities and the transmission delays of data packets are considered at the same time, partial switching conditions of a hybrid switching system are obtained through a calculation formula of the maximum transmission delays of the data packets of all the priorities, a hybrid switching system model is used for analyzing the data packet scheduling process, and therefore a data packet scheduling algorithm of the IP layer is designed. By using the algorithm provided by the invention, data packets from different types of networks can be scheduled, multi-network fusion is realized, meanwhile, the real-time requirement of the data packets in the industrial Internet of Things can be met, and the packet loss rate is reduced.

Description

Technical field[0001]The present invention belongs to the technical field of real-time transmission and multi-network fusion of industrial Internet of Things, and is relate to a scheduling algorithm for packet scheduling based on packet priority, transmission time, and hybrid switching system model in the IP layer.Background technique[0002]With the development of wireless networks and 5G technology, multi-network integration and multi-service coexistence have become a problem that the current industrial network research must overcome. At the same time, with the proposal of the deterministic network application, how to ensure that each packet can be sent in time, and it has become a key in time in which each packet can be sent in time. In order to meet the low-delay demand for industrial networking data package end, IEEE 802.1 Working Group issued a series of time-sensitive network (TSN) related standards, secured by clock synchronization, data stream measurement strategy, etc. to en...

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Problems solved by technology

This method considers the priority and transmission time of data packets at the same time, and obtains the partial switching conditions of the hybrid switching system through the calculation formula of the maximum transmission delay of data packets of each priority, and uses the hybrid switching system model to analyze the packet scheduling process , so as to design the data packet scheduling algorithm of IP layer, to overcome the problem that the real-time performance of data packets with high requirements on delay such as control class in the current industrial Internet of Things cannot be guaranteed, and also reduce the packet loss rate of the network

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