As required by Industry 4.0, companies will move towards flexible and individual manufacturing. To succeed in this transition, convergence of 5G and time-sensitive networks (TSN) is the most promising technology and has thus attracted considerable interest from industry and standardization groups. However, the delay and jitter of end-to-end (e2e) transmission will get exacerbated if the transmission opportunities are missed in TSN due to the 5G transmission jitter and the clock skew between the two network systems. To mitigate this phenomenon, we propose a novel asynchronous access mechanism (AAM) that isolates the jitter only in the 5G system and ensures zero transmission jitter in TSN. We then exploit AAM to develop an e2e asynchronous traffic scheduling model for coordinated allocation of resources for 5G and TSN to provide e2e transmission delay guarantees for time-critical flows. The results of our extensive simulation of AAM on OMNET++ corroborate the superior performance of AAM and the scheduling model.

翻译：根据工业4.0的要求，企业将迈向灵活和个性化的制造模式。为实现这一转型，5G与时间敏感网络（TSN）的融合是最具前景的技术，因此引起了工业界和标准化组织的广泛关注。然而，由于5G传输抖动以及两个网络系统间的时钟偏差，若时间敏感网络中错过传输机会，端到端传输的时延和抖动将进一步恶化。为缓解这一问题，我们提出一种新型异步接入机制（AAM），该机制将抖动隔离在5G系统内，并确保TSN中零传输抖动。进而利用AAM开发端到端异步流量调度模型，协调分配5G与TSN的资源，为时间关键型流提供端到端传输时延保障。我们在OMNET++平台上对AAM进行了广泛仿真，结果验证了AAM及其调度模型的优越性能。