基于卡尔曼滤波估计的节点补偿TSN-星闪跨域时间同步方法

o address the wireless communication requirements of high bandwidth, low latency, and deterministic transmission driven by rapid industrial intelligentization, this paper proposes a wireless Time-Sensitive Networking (TSN) system based on SparkLink technology. As deterministic transmission in wireless TSN fundamentally relies on time synchronization, a cross-domain time synchronization method incorporating node compensation is presented. For the synchronization scenario involving SparkLink-domain T-nodes and wired TSN-domain master clocks, a two-step synchronization process is developed: initial synchronization between G-nodes and the TSN master clock, followed by T-node synchronization with G-nodes. The Kalman filtering algorithm is employed to compensate for frequency and phase deviations in T-node clocks. Simulation experiments demonstrate the effectiveness and advantages of the proposed method. Compared with conventional compensation methods in the PTP protocol under identical synchronization cycles, this approach achieves 59.13% improvement in clock synchronization accuracy and 82.92% enhancement in synchronization error stability. Furthermore, it reduces transmission overhead by 37.75% while maintaining equivalent synchronization accuracy.