Different scheduling mechanisms in Time Sensitive Networking (TSN) can be integrated together to design and support complex architectures with enhanced capabilities for mixed critical networks. Integrating Frame Preemption (FP) with Credit-Based Shaper (CBS) and Gate Control List (GCL) opens up different modes and configuration choices resulting in a complex evaluation of several possibilities and their impact on the Quality of Service (QoS). In this paper, we implement and quantify the integration of preemptive CBS with GCL by incorporating FP into the architecture. Our experiments show that the end-to-end delay of Audio Video Bridging (AVB) flows shaped by CBS reduces significantly (up to 40\%) when AVB flows are set to preemptable class. We further show that the jitter of Time Triggered (TT) traffic remains unaffected in "with Hold/Release" mode. Furthermore, we propose to introduce Guardband (GB) in the "without Hold/Release" to reduce the jitter of the TT flow. We compare all the different integration modes, starting with CBS with GCL, extending it further to FP. We evaluate all feasible combinations in both synthetic and realistic scenarios and offer recommendations for practical configuration methods.

翻译：时间敏感网络（TSN）中的不同调度机制可被整合，以设计和支持具备增强能力的混合关键性网络复杂架构。将帧抢占（FP）与基于信用的整形器（CBS）及门控列表（GCL）相结合，会开启多种模式与配置选择，从而需要对多种可能性及其对服务质量（QoS）的影响进行复杂评估。本文通过将FP纳入架构，实现并量化了可抢占CBS与GCL的集成。实验表明，当音视频桥接（AVB）流被设置为可抢占类别时，经CBS整形的AVB流的端到端延迟显著降低（最高达40%）。我们进一步证明，在“带保持/释放”模式下，时间触发（TT）流量的抖动不受影响。此外，我们建议在“不带保持/释放”模式中引入保护带（GB）以降低TT流的抖动。我们比较了所有不同的集成模式，从CBS与GCL的组合开始，进一步扩展到FP。我们在合成与真实场景中评估了所有可行的组合，并为实际配置方法提供了建议。