Rate-limited service planning and scheduling system, method and application

Abstract

The invention belongs to the technical field of rate-limited service scheduling, and discloses a rate-limited service planning and scheduling system, method and application, and the rate-limited service planning and scheduling method performs planning according to a service planning table, controls the period and offset parameters of each rate-limited service according to a scheduling table, and schedules the rate-limited services. The rate-limited service planning scheduling system comprises a queue management module, a sending scheduling module, a BAG table and an RC sending scheduling table. The sending scheduling module comprises an RC traffic shaping module, an RC scheduling module and a BE and synchronous scheduling module. According to the system and the method for planning and scheduling the rate-limited business, the characteristic of flexibility is reserved, and meanwhile, the controllability and the certainty are higher; fixed services and common Ethernet BE services can be processed without conflicts while the rate limited RC services are processed in a planned mode, different service requirements are met, and the bandwidth utilization rate can be increased to a greater extent.

Description

technical field [0001] The invention belongs to the technical field of rate-limited service scheduling, and in particular relates to a rate-limited service planning and scheduling system, method and application. Background technique [0002] At present, with the development of complex systems such as aerospace electronic systems, higher requirements are placed on data transmission bandwidth, real-time performance, and reliability. Avionics full-duplex switched Ethernet (AFDX) networks, time-triggered Ethernet (TTE) and other deterministic networks have been widely used in aerospace electronic control systems and automotive networks. Rate-constrained services, referred to as RC services, as an event-triggered service, are flexible and dynamic. It has become one of the mainstream communication services of deterministic switched Ethernet by establishing periodic communication that maximizes bandwidth utilization to ensure limited transmission delay in complex networks. [0003...

AI Technical Summary

Problems solved by technology

[0009] (1) In the traditional rate-limited (RC) service scheduling method, the ordinary FIFO cache cannot treat different services with different requirements and provide differentiated services, which may lead to a large average delay of services in the system, which cannot meet the real-time requirements of some scenarios

[0010] (2) The efficiency of the simple polling scheduling method is low, and some data frames will be delayed due to waiting for multiple long frames to be sent, and the delay time is uncontrollable, which is not accepted in some aerospace application scenarios Allowed

[0011] (3) The priority-based scheduling method uses different algorithms to set the priority to reduce the average delay as much as possible, but the transmission of rate-limited (RC) services is still random

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