1. 3GPP TR 22.804 V16.2.0 (2018-12) Study on Communication for Automationin Vertical Domains (Release 16) 在多个垂直行业的案例中,表达了时间同步的需求。 运动控制、大规模无线传感器、电力系统 PMU、低延迟音频流现场表演、高数据率视频流/专业视频制作。 2. 3GPP TR 22.821 V16.1.0 (2018-06) Feasibility Study onLAN Support in 5G (Release 16) 提到TSN。 3. 3GPP TS 22.104 V17.2.0 (2019-12) Service requirementsfor cyber-physical control applications in vertical domains;Stage 1(Release 17) 提到时间同步要求。 User-specific clock synchronicity accuracy level | Number of devices in one Communication group for clock synchronisation | Synchronicity budget requirement (note) | | | | | | | - Motion control - Control-to-control communication for industrial controller | | | | | - Control-to-control communication for industrial controller | | | | | - High data rate video streaming | | | | | - AVProd synchronisation and packet timing | | | | | - Smart Grid: synchronicity between PMUs | | | | | - Telesurgery and telediagnosis | NOTE: The clock synchronicity requirement refers to the clock synchronicity budget for the 5G system, as described in Clause 5.6.1. The global time domain requires in general a precision of 1 μs between the sync master and any device of the clock domain. |
|