Fixed-priority scheduling and controller co-design for time-sensitive networks

Enhanced System Design and Scheduling Strategy for Switches in Time-Sensitive Networking

“…The definitions of other symbols are the same as in [27]. Thus, the arrival curve of TT flows and guard band can be described by (20).…”

“…The qualitative analysis of the SBQ method shows that this method does not affect TT's high priority, while the setting of the newly added queue's threshold and gateway scheduling has not been discussed in detail. To mitigate the long delay that the first-in-first-out (FIFO) queue in 802.1Qbv switches may cause in the worst case, the fixed priority scheduling (FPS) method [20] was proposed, and finegrained frame-level response time analysis was conducted. A collaborative design optimization problem was proposed to determine the real-time controller's sampling period while satisfying scheduling constraints.…”

Design of coordinated transmission mechanism of heterogeneoustime-sensitive data flow for industrial internet

“…伴随着大量现场设备之 间各类业务数据频繁交互的需求, 以及越来越多的数 据分析、预测性维护等技术引入到工业控制系统中, 工业界由原来比较封闭的自动化/运营技术(operation technology, OT )领域, 逐渐向信息技术(information technology, IT)领域开放, 工业控制系统架构也正在向 具有泛在感知、精准控制 [9] 、优化反馈 [10] 、实时决策 等功能的智能工业网络系统演进, 这对工业网络提出 了确定性传输需求 [11,12] . 不兼容问题 [13,14] , 使得传统碎片化的网络架构难以满 足工业现场异构设备间高速且频繁的实时交互需求. TAS)的调度问题上, 其中 TSN 交换机中每个端口的 调度通常都是离线计算 [13][14][15][16][17] 的.…”

“…不兼容问题 [13,14] , 使得传统碎片化的网络架构难以满 足工业现场异构设备间高速且频繁的实时交互需求. TAS)的调度问题上, 其中 TSN 交换机中每个端口的 调度通常都是离线计算 [13][14][15][16][17] 的. 文献 [13]引入了 TSN 中调度建模的无等待调度问题, 并将其映射到无等待 作业车间调度问题 [18] 中, 设计了基于禁忌搜索的启发 式算法来求解无等待调度问题.…”

Work With What You've Got: An Approach for Resource-Driven Adaptation

“…Some scheduling approaches support prioritisation [10], but they do not consider adaptation. Furthermore, these approaches order tasks using priority assignment policies of the type deadline-monotonic and rate-monotonic [14], [15], which assign the highest priorities to the tasks with the earliest deadlines and shortest periods, respectively. These policies rely on a single criterion to assign priorities to tasks.…”