Divided type scheduling method applied to shared Ethernet

Abstract

The invention discloses a divided type scheduling method applied to a shared Ethernet. The divided type scheduling method comprises the following steps: 1, obtaining a distributed time slot; 2, further dividing the time slot into a TT time slice and an ET time slice; 3, sending to a timely scheduling port, a timed scheduling port or a random access port according to a priority of to-be-sent data;4, enabling the timely scheduling port, the timed scheduling port or the random access port to frame received data and store to respective and corresponding timely scheduling data frame queue, timed scheduling data frame queue and random access data frame queue; 5, within the TT time slice, sending data frames in the timely scheduling data frame queue; and 6, within the ET time slice, sending dataframes in the timed scheduling data frame queue and the random access data frame queue. The divided type scheduling method is applied to the field of aviation electronic communication and particularly to a scene with an extremely high demand on certainty and security of data transmission in the fields of flight control, engine control and electromechanical control.

Description

technical field [0001] The invention belongs to the field of airborne bus communication technology in avionics systems, and in particular relates to the selection of bus network architecture in the field of communication, which requires extremely high certainty and safety of data transmission in the field of flight control, engine control and electromechanical control design method. Background technique [0002] In the past few decades, Ethernet, as an open and standardized network, has achieved the most extensive and successful application in the world, and it has experienced the evolution of network configuration from shared to switched. The current mainstream switched Ethernet has developed from 100Mbps to 100Gbps. Due to its open nature, it is vulnerable to various attacks, and the security level cannot meet the high-security application fields of aviation and airborne; at the same time, the best-effort transmission method adopted by Ethernet does not take too much into...

AI Technical Summary

Problems solved by technology

As a relatively closed bus technology, TTP's research scope and technical advancement are not as extensive and continuous as Ethernet technology, and its physical layer technology has almost no new update iterations, resulting in poor scalability of transmission bandwidth; The backbone network based on 802.3 standard, such as industrial switched Ethernet AFDX, time-triggered Ethernet TTE and optical fiber Ethernet, is widely used in avionics systems. Design a high-deterministic, low-cost, and bandwidth-compatible Ethernet-compatible It is very potential to replace TTP with network and apply to aviation distributed control system

Images