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注册:2020-2-16
发表于 2020-8-6 10:21:40 |显示全部楼层
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)
Service area
Scenario
1
Up to 300 UEs
[<x  μs]
≤ 100 m  x 100 m
-       Motion  control
  
-       Control-to-control  communication for industrial controller
2
Up to 300 UEs
[<x  μs]
≤ 1000 m  x 100 m
-       Control-to-control  communication for industrial controller
3
Up to 10 UEs
< 10 μs
≤ 2500 m2
-       High data rate video  streaming
3a
Up to 100 UEs
<1 μs
≤10 km2
-        AVProd synchronisation   and packet timing
4
Up to 100 UEs
[<x  μs]
< 20 km2
-        Smart Grid: synchronicity between PMUs
5
Up to 10 UEs
<  50 μs
400 km
-     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.

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