Content for TS 22.104 Word version: 18.1.0
5.3 Aperiodic deterministic communication
5.4 Non-deterministic communication
5.5 Mixed traffic
5.6 Clock synchronisation requirements
5.6A Time-sensitive communication requirements
5.6B 5G Timing Resiliency
5.7 Positioning performance requirements
5.8 Network operation requirements
...
...
5.3 Aperiodic deterministic communication Word‑p. 18
Aperiodic deterministic communication is without a pre-set sending time, but still with stringent requirements on timeliness and availability of the communication service. A description of aperiodic deterministic communication can be found in Clause 4.3 and Clause 4.4. Additional information on the underlying use cases of the sets of requirements in Table 5.3-1 can be found in Annex A. Further information on characteristic parameters and influence quantities used in Table 5.3-1 can be found in Annex C.
The 5G system shall be able to provide aperiodic deterministic communication with the service performance requirements for individual logical communication links that realise the communication services reported in Table 5.3-1.
| Characteristic parameter (KPI) | Influence quantity | Remarks | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Communication service availability | Communication service reliability: mean time between failures | Max Allowed End-to-end latency (note 1) (note 5) | Service bit rate: user-experienced data rate (note 5) | Message size [byte] (note 5) | Survival time | UE speed (note 6) | # of UEs | Service Area (note 3) | |
| > 99.999 9 % | ~ 1 week | 10 ms | UL: > 10 Mbit/s | – | – | ≤ 50 km/h | ≤ 2,000 | ≤ 1 km² | Mobile robots - video streaming (clause A.2.2.3) |
| 99.999 9 % to 99.999 999 % | ~ 1 month | < 30 ms | > 5 Mbit/s | – | – | < 8 km/h (linear movement) | TBD | TBD | Mobile control panels - parallel data transmission (clause A.2.4.1) |
| 99.999 999 % | 1 day | < 8 ms (note 8) | 250 kbit/s | 40 to 250 | 16 ms | quasi-static; up to 10 km/h | 2 or more | 30 m x 30 m | Mobile Operation Panel: Emergency stop (emergency stop events) (clause A.2.4.1A) |
| 99.999 9 % | – | < 50 ms | 0,59 kbit/s 28 kbit/s | < 100 | – | stationary | 10 km² to 100 km² | TBD | Smart grid millisecond level precise load control (clause A.4.5) |
| > 99.9 % | ~ 1 month | < 10 ms | – | – | – | < 8 km/h (linear movement) | ≥ 3 | 20 m x 20 m x 4 m | Augmented reality; bi-directional transmission to image processing server (clause A.2.4.2) |
| 99.999 9 % to 99.999 999 % | ~ 10 years | < 1 ms (note 4) | 25 Mbit/s | – | – | stationary | 2 to 5 | 100 m x 30 m x 10 m | Wired-2-wireless 100 Mbit/s link replacement (clause A.2.2.4) |
| 99.999 9 % to 99.999 999 % | ~ 10 years | < 1 ms (note 4) | 500 Mbit/s | – | – | stationary | 2 to 5 | 100 m x 30 m x 10 m | Wired-2-wireless 1 Gbit/s link replacement (clause A.2.2.4) |
|
NOTE 1:
Unless otherwise specified, all communication includes 1 wireless link (UE to network node or network node to UE) rather than two wireless links (UE to UE).
NOTE 2:
(void)
NOTE 3:
Length x width x height.
NOTE 4:
Scheduled aperiodic traffic with transfer interval (max end-to-end allowed latency < transfer interval).
NOTE 5:
It applies to both UL and DL unless stated otherwise.
NOTE 6:
It applies to both linear movement and rotation unless stated otherwise.
NOTE 7:
Communication includes two wireless links (UE to UE).
NOTE 8:
The mobile operation panel is connected wirelessly to the 5G system. If the mobile robot/production line is also connected wirelessly to the 5G system, the communication includes two wireless links.
|
|||||||||
5.4 Non-deterministic communication Word‑p. 20
Non-deterministic communication subsumes all other traffic types than periodic/aperiodic deterministic communication. This includes periodic/aperiodic non-real-time traffic. A description of non-deterministic communication can be found in Clause 4.3 and Clause 4.4. Additional information on the underlying use cases of the sets of requirements in Table 5.4-1 can be found in Annex A. Further information on characteristic parameters and influence quantities used in Table 5.4-1 can be found in Annex C.
The 5G system shall be able to provide non-deterministic communication with the service performance requirements for individual logical communication links that realise the communication services reported in Table 5.4-1.
| Characteristic parameter (KPI) | Influence quantity | Remarks | |||
|---|---|---|---|---|---|
| Communication service reliability: mean time between failures | Service bit rate: user-experienced data rate | UE speed (note 2) | # of UEs | Service area (note 1) | |
| ~ 1 month | DL: ≥ 1 Mbit/s | ~ 0 km/h ≤ 75 km/h | ≤ 100 | 50 m x 10 m x 10 m | Motion control - software updates (clause A.2.2.1) |
| UL: > 10 Mbit/s | ≤ 50 km/h (linear movement) | ≤ 2,000 | ≤ 1 km² | Mobile robots; real-time video stream (clause A.2.2.3) | |
|
NOTE 1:
Length x width x height
NOTE 2:
It applies to both linear movement and rotation unless stated otherwise.
|
|||||
5.5 Mixed traffic
Mixed traffic cannot be assigned to one of the other communication patterns exclusively. Additional information on the underlying use cases of the sets of requirements in Table 5.5-1 can be found in Annex A. Further information on characteristic parameters and influence quantities used in Table 5.5-1 can be found in Annex C.
The 5G system shall be able to provide mixed traffic communication with the service performance requirements for individual logical communication links that realise the communication services reported in Table 5.5-1.
| Characteristic parameter (KPI) | Influence quantity | Remarks | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Communication service availability | Communication service reliability: mean time between failures | Max Allowed End-to-end latency (note 1) (note 3) | Service bit rate: aggregate user-experienced data rate | Message Size [byte] | Survival time | UE speed | # of UEs | Service Area | |
| 99.999 999 9 % | ~ 10 years | 16 ms | stationary | < 1,000 | several km² | Wind power plant - control traffic (clause A.5.2) | |||
| 99.999 9 % to 99.999 99 % | 1 day | (note 4) | 12 Mbit/s | 250 to 1,500 | quasi-static; up to 10 km/h | 2 or more | 30 m x 30 m | Mobile Operation Panel: Manufacturing data stream (clause A.2.4.1A) | |
|
NOTE 1:
Unless otherwise specified, all communication includes 1 wireless link (UE to network node or network node to UE) rather than two wireless links (UE to UE).
NOTE 2:
(void)
NOTE 3:
It applies to both UL and DL unless stated otherwise.
NOTE 4:
The mobile operation panel is connected wirelessly to the 5G system. If the mobile robot/production line is also connected wirelessly to the 5G system, the communication includes two wireless links.
|
|||||||||
5.6 Clock synchronisation requirements Word‑p. 22
5.6.0 Description
Clock synchronicity, or time synchronization precision, is defined between a sync master and a sync device. The requirement on the synchronicity budget for the 5G system is the time error contribution between ingress and egress of the 5G system on the path of clock synchronization messages.
5.6.1 Clock synchronisation service level requirements
The 5G system shall support a mechanism to process and transmit IEEE 1588v2 / Precision Time Protocol messages to support 3rd-party applications which use this protocol.
The 5G system shall support a mechanism to synchronise the user-specific time clock of UEs with a global clock.
The 5G system shall support a mechanism to synchronize the user-specific time clock of UEs with a working clock.
The 5G system shall support two types of synchronization clocks, the global time domain and the working clock domains.
The 5G system shall support networks with up to 128 working clock domains (with different synchronization domain identifiers / domain numbers), including for UEs connected through the 5G network.
The 5G system shall be able to support up to four simultaneous synchronization domains on a UE.
The synchronicity budget for the 5G system within the global time domain shall not exceed 900 ns.
The synchronicity budget for the 5G system within a working clock domain shall not exceed 900 ns.
The 5G system shall provide a media dependent interface for one or multiple IEEE 802.1AS sync domains [22].
The 5G system shall provide an interface to the 5G sync domain which can be used by applications to derive their working clock domain or global time domain (Reference Clock Model).
The 5G system shall provide an interface at the UE to determine and to configure the precision and time scale of the working clock domain.
The 5G system shall be able to support arbitrary placement of sync master functionality and sync device functionality in integrated 5G / non-3GPP TSN networks.
The 5G system shall be able to support clock synchronization through the 5G network if the sync master and the sync devices are served by different UEs. (Flow of clock synchronization messages is in either direction, UL and DL.)
The 5G system shall provide a suitable means to support the management of the merging and separation of working clock domains, that is interoperable with the corresponding mechanisms of TSN and IEEE 802.1AS.
5.6.2 Clock synchronisation service performance requirements Word‑p. 23
| User-specific clock synchronicity accuracy level | Number of devices in one Communication group for clock synchronisation | 5GS synchronicity budget requirement (note) | Service area | Scenario | |||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | Up to 300 UEs | ≤900 ns | ≤ 100 m x 100 m |
| |||||
| 2 | Up to 300 UEs | ≤900 n | ≤ 1,000 m x 100 m |
| |||||
| 3 | Up to 10 UEs | < 10 μs | ≤ 2,500 m² |
| |||||
| 3a | Up to 100 UEs | < 1 μs | ≤ 10 km² |
| |||||
| 4 | Up to 100 UEs | < 1 μs | < 20 km² |
| |||||
| 5 | Up to 10 UEs | < 50 μs | 400 km |
| |||||
|
NOTE:
The clock synchronicity requirement refers to the clock synchronicity budget for the 5G system, as described in Clause 5.6.1.
|
|||||||||
5.6A Time-sensitive communication requirements |R17|
The 5G system shall support the fully distributed model for configuration of time-sensitive networking.
The 5G system shall support the fully distributed model for configuration of time-sensitive networking that is aligned with Multiple Stream Registration Protocol (MSRP, IEEE 802.1Q [19] clause 35.1), IEEE P802.1CS Link-local Registration Protocol (LRP) [24], and IEEE P802.1Qdd Resource Allocation Protocol (RAP) [25].
The 5G system shall support the user-network / network-network interface for the dynamic configuration of the fully distributed model for time-sensitive networking.
5.6B 5G Timing Resiliency |R18|
To enable support of many critical services within the 5G network, additional requirements and KPIs that enhance the 5G system with timing resiliency are specified in TS 22.261 clause 6.36 and TS 22.261 clause 7.8. Those enhancements enable use of the 5G system for time critical services in collaboration with or as a backup to other timing solution such as loss or degradation of GNSS reference timing.
5.7 Positioning performance requirements
5.7.1 General requirements |R18|
High accuracy positioning is becoming essential for Factories of the Future. The reason for this is that tracking of mobile devices as well as mobile assets is becoming increasingly important in improving processes and increasing flexibility in industrial environments.
The 5G system shall provide positioning information for a UE that is out of coverage of the network, with accuracy of < [1 m] relative to other UEs that are in proximity and in coverage of the network.
Table 5.7.1-1 below lists typical scenarios and the corresponding high positioning requirements for horizontal and vertical accuracy, availability, heading, latency, and UE speed.
| Scenario | Horizontal accuracy | Vertical accuracy | Availability | Heading | Latency for position estimation of UE | UE speed | Corresponding Positioning Service Level in TS 22.261 |
|---|---|---|---|---|---|---|---|
| Mobile control panels with safety functions (non-danger zones) | < 5 m | < 3 m | 90 % | n/a | < 5 s | n/a | Service Level 2 |
| Process automation - plant asset management | < 1 m | < 3 m | 90 % | n/a | < 2 s | < 30 km/h | Service Level 3 |
| Flexible, modular assembly area in smart factories (for tracking of tools at the work-place location) | < 1 m (relative positioning) | n/a | 99 % | n/a | 1 s | < 30 km/h | Service Level 3 |
| Augmented reality in smart factories | < 1 m | < 3 m | 99 % | < 0.17 rad | < 15 ms | < 10 km/h | Service Level 4 |
| Mobile control panels with safety functions in smart factories (within factory danger zones) | < 1 m | < 3 m | 99,9 % | < 0.54 rad | < 1 s | n/a | Service Level 4 |
| Flexible, modular assembly area in smart factories (for autonomous vehicles, only for monitoring purposes) | < 50 cm | < 3 m | 99 % | n/a | 1 s | < 30 km/h | Service Level 5 |
| Inbound logistics for manufacturing (for driving trajectories (if supported by further sensors like camera, GNSS, IMU) of indoor autonomous driving systems)) | < 30 cm (if supported by further sensors like camera, GNSS, IMU) | < 3 m | 99.9 % | n/a | 10 ms | < 30 km/h | Service Level 6 |
| Inbound logistics for manufacturing (for storage of goods) | < 20 cm | < 20 cm | 99 % | n/a | < 1 s | < 30 km/h | Service Level 7 |
5.7.2 Energy efficiency requirements for high accuracy positioning |R18| Word‑p. 24
The 5G system shall support low power high accuracy positioning mechanisms that allow a battery-constrained UE to sustain a long lifetime without changing battery. Some corresponding use cases and example scenarios are captured in Annex A.7.2.
5.8 Network operation requirements |R17|
For use by Industry 4.0, the 5G system needs to meet various operational options that are not typical in a traditional mobile operator setting. Additional system requirements that enable a 5G system to support those options are included in this clause.
5G system shall provide support for reliable communications when a UE serves as a TSN talker or listener so there is no single point of service failure.
