arXiv:2611.15622 · v1
Quota-Based Traffic Classification for Bounded Jitter in Multi-CQF under Redundancy Mechanisms
摘要
The demand for deterministic and reliable communication is rapidly increasing in industrial networks. Time-Sensitive Networking (TSN) addresses these requirements through deterministic scheduling and redundancy mechanisms such as Multiple Cyclic Queuing and Forwarding (Multi-CQF) and Frame Replication and Elimination for Reliability (FRER). Multi-CQF guarantees bounded end-to-end (E2E) latency and jitter, while FRER provides seamless fault tolerance through redundant forwarding. With static traffic classification, redundant paths with different hop counts can exhibit different E2E latency ranges. This can amplify jitter when a failure causes packets to be delivered over a longer redundant path. To address this, we propose a quota-based traffic classification mechanism that adapts class assignments hop-by-hop using a common E2E latency budget derived from the primary path, thereby mitigating jitter amplification. Simulation results show that the proposed mechanism reduces jitter amplification by up to 70% and latency degradation by up to 41% compared to static classification.
作者备注：6 pages, 4 figures, 1 table. This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible