A Method for Critical Business Burst Processing in Airborne Avionics Network

A processing method and a key technology, applied in the field of avionics, can solve problems such as network congestion, application scenarios, real-time impact discussion, and network communication requirements, so as to meet real-time guarantees, ensure deterministic delays, and improve chain The effect of road utilization
CN106921591BActive Publication Date: 2020-05-12XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2020-05-12

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Abstract

The invention belongs to the technical field of avionics, and discloses a method for processing bursts of critical services in an airborne avionics network. The method for processing bursts of critical services in the airborne avionics network is based on business planning and partition scheduling of a TTE network The mechanism divides the time axis into multiple basic periods, and each basic period is divided into two sections: the TT segment that only transmits TT and the ET segment that transmits RC / BE. The present invention solves the problem that the network carries burst messages without causing packet loss through the replacement of key burst services and the one-way conversion of downgrading priority. The optimized ET scheduling method is based on the level of burst services, which not only ensures The deterministic delay of the key services sent will not bring much delay impact on the original TT and RC services, and also improve the link utilization rate of the TT segment.
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Description

technical field

[0001] The invention belongs to the technical field of avionics, and in particular relates to a key business burst processing method in an airborne avionics network. Background technique

[0002] The airborne network is considered to be the "central nerve" of the aircraft. It interconnects airborne systems such as electromechanical and flight control systems. It requires high bandwidth and strict end-to-end delay. It is a typical strong real-time safety-critical control network. It is necessary to ensure the reliability of information services in a mixed security-critical business environment. The network environment is usually unpredictable. Network business burst refers to the simultaneous arrival of multiple services that cause the buffer queue of a certain node port to overflow in a very short time, or the rate mismatch blocking caused by the input rate of the link being greater than the output rate. . Business bursts will not only affect the real-time ...

Claims

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