A method for multi-service coexistence and ip-layer data packet scheduling in industrial internet of things

Abstract

An IP layer data packet scheduling algorithm oriented to multi-service coexistence and deterministic network requirements in the Industrial Internet of Things belongs to the technical field of real-time data transmission and multi-network integration of the Industrial Internet of Things. Current packet scheduling algorithms lack the analysis of the coexistence of continuous periodic data and discrete control data in the Industrial Internet of Things. The algorithm considers the priority and transmission delay of the 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 the data packets of each priority, and uses the hybrid switching system model to carry out the packet scheduling process Based on the analysis, the packet scheduling algorithm of IP layer is designed. The algorithm of the invention can be used to schedule data packets from different types of networks, realize multi-network integration, meet the real-time requirements of data packets in the industrial internet of things, and reduce the packet loss rate.

Description

technical field [0001] The invention belongs to the technical field of industrial Internet of Things data real-time transmission and multi-network integration, and relates to a scheduling algorithm for data packet scheduling at the IP layer according to data packet priority, transmission time and based on a hybrid switching system model. Background technique [0002] With the development of wireless networks and 5G technologies, multi-network integration and multi-service coexistence have become issues that must be overcome in the field of industrial Internet of Things research. At the same time, with the introduction of deterministic network application requirements, how to ensure that each data packet can be sent on the network in a timely manner as required in this hybrid network application scenario has become the key. In order to meet the end-to-end low-latency requirements of industrial IoT data packets, the IEEE802.1 working group released a series of time-sensitive n...

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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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