中文摘要：

时间触发以太网（TTE）中的速率约束（RC）流量受到按预先定义时刻发送的高优先级时间触发（TT）流量的抢占,采用传统的固定优先级/先入先出（FP/FIFO）的模型进行整体法（holistic）分析,得到的RC流量延迟上界值过于保守。根据RC流量在网络的传输过程中受到TT流量消息抢占的具体情况进行分析,提出适用于TTE网络RC流量的改进整体法。将网络拓扑的TT调度时刻表作为参数,分析RC流量在特定时间抖动区间内TT流量的抢占情况,通过遍历RC流量发送相位得出最坏情况延迟。理论分析和案例仿真验证结果表明,采用该方法得到的RC流量的端到端延迟上界值更加合理。

英文摘要：

Traditional real-time performance evaluation model based on holistic way is not fit for rate-constrained（RC）traffic in time-triggered Ethernet（TTEthernet）due to the prescribed sending schedule of time-triggered（TT）traffic.The collision of TT traffic and RC traffic during the sending process was analyzed,and an improved holistic method was proposed to analyze the worst-case end-to-end latency of RC traffic.Worst-case latency was obtained by analyzing collision of TT traffic and RC traffic in jitter interval under different send-time phases of RC traffic.The theoretical analysis and case study show that the proposed model gives a tighter latency bound than traditional holistic approach.