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Beginners:
Introduction to 5G Reduced
Capability (RedCap) Devices
Previously known as NR-Lite / NR-Light
@3g4gUK
©3G4G
NR RedCap was initially called NR-Lite and
then NR-Light before settling on RedCap
(Reduced Capability).
It was first introduced as a 3GPP Release-17
Study item in 3GPP RAN #84 at Newport
Beach, California on 3-6 June 2019
3GPP Standards Timeline - Revised
©3G4G
2018 2019 2020 2021
2017
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3
Q4
Rel-15 NSA
(option-3)
freeze
Rel-15 NSA
(option-3)
ASN.1
Earlydrop
Rel-15 SA
(option-2)
freeze
Rel-15 SA
(option-2)
ASN.1
Main drop
Rel-15
Rel-15 late
drop
freeze
Rel-15 late
drop ASN.1
Latedrop
Rel-16
content
definition
Rel-16 specification development
Rel-16
freeze
Rel-16
ASN.1
freeze
Rel-16
Approval
of Rel-17
content
Rel-17 specification work
Rel-17
freeze
Rel-17
ASN.1
freeze
Rel-17
Designed by 3G4G, based on roadmap from 3GPP, July 2019
3GPP Rel-17 Timeline as of July 2021
©3G4G
Source: 3GPP
3GPP Release and Features
©3G4G
3GPP Release-17 Features as of July 2021
©3G4G
Source: 3GPP
©3G4G
Video Link
5G eMBB Spider Diagram
©3G4G
0
2
4
6
8
10
Coverage
Peak Data Rate
Reliability
Low Cost
Battery Life
Low Latency
eMBB
5G URLLC Spider Diagram
©3G4G
0
2
4
6
8
10
Coverage
Peak Data Rate
Reliability
Low Cost
Battery Life
Low Latency
URLLC
Requirements of Premiums 5G UEs
©3G4G
Requirements &
Characteristics
Premium 5G UEs Low tier 5G UEs Very low end
eMBB URLLC Industrial
sensors / video
monitoring
Low end
wearables
Relaxed IoT LPWA mMTC
Latency Low Ultra Low Medium Medium Low/medium High
Reliability High Ultra high Medium Medium/High High /ultra high Low
Data rate High Low/High Medium Low -Medium Low/medium Low
Device complexity High High Medium Low Low Very low
Coverage Normal Normal Normal Normal normal Extreme
Battery life Medium Medium Medium Long Low/Medium/NA Very long
Connection density Medium Medium Medium High High/very high Very high
Bandwidth requirement Wide Wide Medium Medium Medium Narrow
Mobility Yes Yes Yes Yes Yes Nomadic
Table Source: Qualcomm
LTE-M (eMTC) & NB-IoT Spider Diagram
©3G4G
0
2
4
6
8
10
Coverage
Peak Data Rate
Reliability
Low Cost
Battery Life
Low Latency
LTE-M (eMTC)
NB-IoT
Requirements of Very Low End UEs
©3G4G
Requirements &
Characteristics
Premium 5G UEs Low tier 5G UEs Very low end
eMBB URLLC Industrial
sensors / video
monitoring
Low end
wearables
Relaxed IoT LPWA mMTC
Latency Low Ultra Low Medium Medium Low/medium High
Reliability High Ultra high Medium Medium/High High /ultra high Low
Data rate High Low/High Medium Low -Medium Low/medium Low
Device complexity High High Medium Low Low Very low
Coverage Normal Normal Normal Normal normal Extreme
Battery life Medium Medium Medium Long Low/Medium/NA Very long
Connection density Medium Medium Medium High High/very high Very high
Bandwidth requirement Wide Wide Medium Medium Medium Narrow
Mobility Yes Yes Yes Yes Yes Nomadic
Table Source: Qualcomm
5G Spider Diagram Combined
©3G4G
0
2
4
6
8
10
Coverage
Peak Data Rate
Reliability
Low Cost
Battery Life
Low Latency
NB-IoT
LTE-M (eMTC)
URLLC
eMBB
Scope of NR-Lite
Expand the ecosystem
What are Low Tier 5G UEs
◦ Industrial sensors / video monitoring
◦ Relaxed IOT devices
◦ Wearables
◦ May or may not be power constrained
©3G4G
Different types of NR RedCap UEs / Devices
©3G4G
• IWSN: Industrial wireless sensor networks
• Examples: microphones, CO2 sensors, pressure sensors, humidity
sensors, thermometers, cameras, video cameras, motion sensors,
accelerometers, laser scanners, fluid-level sensors, inventory
sensors, electric voltage meter, electric current meter, actuators
• Wearables
• Low-end Wearables
• Relaxed-IoT
• Other Terminology for NR-RedCap being used:
• Low tier 5G UEs
• IWSN & mid-end IoT
NR-Lite vs LTE
Why introduce NR-Lite instead of reusing LTE?
•Motivation
•No need to support 3 different networks –NR, eMTC/NB-IoT, and LTE
•Operators can migrate their spectrum to NR which can support both URLLC & NR-Lite on the same
carrier as well as deploy eMTC/NB-IoT either in-band or in guard-band.
•Better system efficiency with NR compared to LTE
•Utilize NR features like beam-formed operation, higher subcarrier spacing for latency reduction,
massive MIMO for coverage, mixed numerology, higher positioning accuracy, low-overhead carriers,
etc.
•Deploy URLLC & NR-Lite in also FR2 and new spectrum
•FR2 can be very attractive for private networks due to its limited range and high spatial reuse e.g.
each building or floor can have its own network and they will not interfere with each other
•Better integration and benefits from 5G core and architecture –network slicing, service based
architecture, flow-based QoS, etc.
©3G4G
Use Case Requirements for Connected Industries
Wide range of use cases and connectivity requirements for industrial verticals
—cMTC type: remote driving, motion control for industrial automation, power distribution grid fault management
—eMBB type: AR/VR for industrial automation
—mMTC: LTE-M/NB-IoT for LPWA
—IWSN: Industrial wireless sensor networks
—Broadly speaking, sensors with connectivity requirements that cannot be addressed
—by NR Rel-16 in terms of
—battery lifetime
—form factor
—complexity
—nor by LTE-M/NB-IoT in terms of
—data rate
—reliability and latency
—Examples: microphones, CO2 sensors, pressure sensors, humidity sensors, thermometers, cameras, video cameras, motion sensors, accelerometers, laser scanners, fluid-
level sensors, inventory sensors, electric voltage meter, electric current meter, actuators
©3G4G
Nokia: NR-Lite in Rel-17
•NR-Lite should address new use cases with IoT-type of requirements that cannot be met by eMTC and NB-IoT:
•Higher data rate & reliability and lower latency than eMTC& NB-IoT
•Lower cost/complexity and longer battery life than NR eMBB
•Wider coverage than URLLC
•Requirements and use cases –
•Data rates up to 100 Mbps to support e.g. live video feed, visual production control, process automation
•Latency of around [10-30] msto support e.g. remote drone operation, cooperative farm machinery, time-critical
sensing and feedback, remote vehicle operation
•Module cost comparable to LTE
•Coverage enhancement of [10-15]dB compared to URLLC
•Battery life [2-4X] longer than eMBB
•Enable single network to serve all uses in industrial environment
•URLLC, MBB & positioning
©3G4G
NR-RedCap: New Feature in 3GPP Release-17
©3G4G
Requirements &
Characteristics
Premium 5G UEs Low tier 5G UEs Very low end
eMBB URLLC Industrial
sensors / video
monitoring
Low end
wearables
Relaxed IoT LPWA mMTC
Latency Low Ultra Low Medium Medium Low/medium High
Reliability High Ultra high Medium Medium/High High /ultra high Low
Data rate High Low/High Medium Low -Medium Low/medium Low
Device complexity High High Medium Low Low Very low
Coverage Normal Normal Normal Normal normal Extreme
Battery life Medium Medium Medium Long Long/Medium/NA Very long
Connection density Medium Medium Medium High High/very high Very high
Bandwidth requirement Wide Wide Medium Medium Medium Narrow
Mobility Yes Yes Yes Yes Yes Nomadic
Table Source: Qualcomm
More details on 3G4G Blog
NR-RedCap addresses new use cases with IoT-type of requirements that cannot be met by eMTC and NB-IoT
RedCap Spider Diagram
©3G4G
0
2
4
6
8
10
Coverage
Peak Data Rate
Reliability
Low Cost
Battery Life
Low Latency
RedCap
5G Spider Diagram Combined with RedCap
©3G4G
0
2
4
6
8
10
Coverage
Peak Data Rate
Reliability
Low Cost
Battery Life
Low Latency
NB-IoT
LTE-M (eMTC)
URLLC
eMBB
RedCap
Rel-15 baseline NR devices v/s Rel-17 RedCap devices
©3G4G
Source: Ericsson
©3G4G
©3G4G
©3G4G
References and Further Reading Links
©3G4G
• 3GPP TR 38.875: Study on support of reduced capability NR devices (link)
• RP-210918 : Support of reduced capability NR devices (NR_redcap) – Nokia, Ericsson
• Ericsson Blog: What is reduced capability (RedCap) NR and what will it achieve? (link)
• Thales view on 3GPP NR-REDCAP (link)
• The 3G4G Blog: New 3GPP Release-17 Study Item on NR-Lite (a.k.a. NR-Light) (link)
• RP 190831: Key directions for Release 17 – Nokia, Nokia Shanghai Bell
• RP-190844: NR-Lite for Rel-17 – Qualcomm views
• RP-191047: NR-Lite for Industrial Sensors and Wearables – Ericsson
• RP-191175: Motivation for NR-lite: IoT over NR – Samsung
• RP-1901227: New SID on NR-Lite devices and related technical enhancement – ZTE,
Sanechips
• RWS-210116: RedCap/ NR-Light Enhancements in Rel-18 – Nokia (link)
• RWS-210504: Views on Redcap Enhancements for Rel-18 – Apple (link)
• RWS-210267: Evolution of RedCap in Release 18 – Xiaomi (link)
Thank You
To learn more, visit:
3G4G Website – https://www.3g4g.co.uk/
3G4G Blog – https://blog.3g4g.co.uk/
Telecoms Infrastructure Blog – https://www.telecomsinfrastructure.com/
Operator Watch Blog – https://www.operatorwatch.com/
Connectivity Technology Blog – https://www.connectivity.technology/
Free 5G Training – https://www.free5gtraining.com/
Free 6G Training – https://www.free6gtraining.com/
Follow us on Twitter: https://twitter.com/3g4gUK
Follow us on Facebook: https://www.facebook.com/3g4gUK/
Follow us on LinkedIn: https://www.linkedin.com/company/3g4g
Follow us on SlideShare: https://www.slideshare.net/3G4GLtd
Follow us on YouTube: https://www.youtube.com/3G4G5G
©3G4G
©3G4G
0
2
4
6
8
10
Coverage
Peak Data Rate
Reliability
Low Cost
Battery Life
Low Latency
NB-IoT
LTE-M (eMTC)
URLLC
eMBB
RedCap

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Beginners: Introduction to 5G Reduced Capability (RedCap) Devices

  • 1. Beginners: Introduction to 5G Reduced Capability (RedCap) Devices Previously known as NR-Lite / NR-Light @3g4gUK
  • 2. ©3G4G NR RedCap was initially called NR-Lite and then NR-Light before settling on RedCap (Reduced Capability). It was first introduced as a 3GPP Release-17 Study item in 3GPP RAN #84 at Newport Beach, California on 3-6 June 2019
  • 3. 3GPP Standards Timeline - Revised ©3G4G 2018 2019 2020 2021 2017 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Rel-15 NSA (option-3) freeze Rel-15 NSA (option-3) ASN.1 Earlydrop Rel-15 SA (option-2) freeze Rel-15 SA (option-2) ASN.1 Main drop Rel-15 Rel-15 late drop freeze Rel-15 late drop ASN.1 Latedrop Rel-16 content definition Rel-16 specification development Rel-16 freeze Rel-16 ASN.1 freeze Rel-16 Approval of Rel-17 content Rel-17 specification work Rel-17 freeze Rel-17 ASN.1 freeze Rel-17 Designed by 3G4G, based on roadmap from 3GPP, July 2019
  • 4. 3GPP Rel-17 Timeline as of July 2021 ©3G4G Source: 3GPP
  • 5. 3GPP Release and Features ©3G4G
  • 6. 3GPP Release-17 Features as of July 2021 ©3G4G Source: 3GPP
  • 8. 5G eMBB Spider Diagram ©3G4G 0 2 4 6 8 10 Coverage Peak Data Rate Reliability Low Cost Battery Life Low Latency eMBB
  • 9. 5G URLLC Spider Diagram ©3G4G 0 2 4 6 8 10 Coverage Peak Data Rate Reliability Low Cost Battery Life Low Latency URLLC
  • 10. Requirements of Premiums 5G UEs ©3G4G Requirements & Characteristics Premium 5G UEs Low tier 5G UEs Very low end eMBB URLLC Industrial sensors / video monitoring Low end wearables Relaxed IoT LPWA mMTC Latency Low Ultra Low Medium Medium Low/medium High Reliability High Ultra high Medium Medium/High High /ultra high Low Data rate High Low/High Medium Low -Medium Low/medium Low Device complexity High High Medium Low Low Very low Coverage Normal Normal Normal Normal normal Extreme Battery life Medium Medium Medium Long Low/Medium/NA Very long Connection density Medium Medium Medium High High/very high Very high Bandwidth requirement Wide Wide Medium Medium Medium Narrow Mobility Yes Yes Yes Yes Yes Nomadic Table Source: Qualcomm
  • 11. LTE-M (eMTC) & NB-IoT Spider Diagram ©3G4G 0 2 4 6 8 10 Coverage Peak Data Rate Reliability Low Cost Battery Life Low Latency LTE-M (eMTC) NB-IoT
  • 12. Requirements of Very Low End UEs ©3G4G Requirements & Characteristics Premium 5G UEs Low tier 5G UEs Very low end eMBB URLLC Industrial sensors / video monitoring Low end wearables Relaxed IoT LPWA mMTC Latency Low Ultra Low Medium Medium Low/medium High Reliability High Ultra high Medium Medium/High High /ultra high Low Data rate High Low/High Medium Low -Medium Low/medium Low Device complexity High High Medium Low Low Very low Coverage Normal Normal Normal Normal normal Extreme Battery life Medium Medium Medium Long Low/Medium/NA Very long Connection density Medium Medium Medium High High/very high Very high Bandwidth requirement Wide Wide Medium Medium Medium Narrow Mobility Yes Yes Yes Yes Yes Nomadic Table Source: Qualcomm
  • 13. 5G Spider Diagram Combined ©3G4G 0 2 4 6 8 10 Coverage Peak Data Rate Reliability Low Cost Battery Life Low Latency NB-IoT LTE-M (eMTC) URLLC eMBB
  • 14. Scope of NR-Lite Expand the ecosystem What are Low Tier 5G UEs ◦ Industrial sensors / video monitoring ◦ Relaxed IOT devices ◦ Wearables ◦ May or may not be power constrained ©3G4G
  • 15. Different types of NR RedCap UEs / Devices ©3G4G • IWSN: Industrial wireless sensor networks • Examples: microphones, CO2 sensors, pressure sensors, humidity sensors, thermometers, cameras, video cameras, motion sensors, accelerometers, laser scanners, fluid-level sensors, inventory sensors, electric voltage meter, electric current meter, actuators • Wearables • Low-end Wearables • Relaxed-IoT • Other Terminology for NR-RedCap being used: • Low tier 5G UEs • IWSN & mid-end IoT
  • 16. NR-Lite vs LTE Why introduce NR-Lite instead of reusing LTE? •Motivation •No need to support 3 different networks –NR, eMTC/NB-IoT, and LTE •Operators can migrate their spectrum to NR which can support both URLLC & NR-Lite on the same carrier as well as deploy eMTC/NB-IoT either in-band or in guard-band. •Better system efficiency with NR compared to LTE •Utilize NR features like beam-formed operation, higher subcarrier spacing for latency reduction, massive MIMO for coverage, mixed numerology, higher positioning accuracy, low-overhead carriers, etc. •Deploy URLLC & NR-Lite in also FR2 and new spectrum •FR2 can be very attractive for private networks due to its limited range and high spatial reuse e.g. each building or floor can have its own network and they will not interfere with each other •Better integration and benefits from 5G core and architecture –network slicing, service based architecture, flow-based QoS, etc. ©3G4G
  • 17. Use Case Requirements for Connected Industries Wide range of use cases and connectivity requirements for industrial verticals —cMTC type: remote driving, motion control for industrial automation, power distribution grid fault management —eMBB type: AR/VR for industrial automation —mMTC: LTE-M/NB-IoT for LPWA —IWSN: Industrial wireless sensor networks —Broadly speaking, sensors with connectivity requirements that cannot be addressed —by NR Rel-16 in terms of —battery lifetime —form factor —complexity —nor by LTE-M/NB-IoT in terms of —data rate —reliability and latency —Examples: microphones, CO2 sensors, pressure sensors, humidity sensors, thermometers, cameras, video cameras, motion sensors, accelerometers, laser scanners, fluid- level sensors, inventory sensors, electric voltage meter, electric current meter, actuators ©3G4G
  • 18. Nokia: NR-Lite in Rel-17 •NR-Lite should address new use cases with IoT-type of requirements that cannot be met by eMTC and NB-IoT: •Higher data rate & reliability and lower latency than eMTC& NB-IoT •Lower cost/complexity and longer battery life than NR eMBB •Wider coverage than URLLC •Requirements and use cases – •Data rates up to 100 Mbps to support e.g. live video feed, visual production control, process automation •Latency of around [10-30] msto support e.g. remote drone operation, cooperative farm machinery, time-critical sensing and feedback, remote vehicle operation •Module cost comparable to LTE •Coverage enhancement of [10-15]dB compared to URLLC •Battery life [2-4X] longer than eMBB •Enable single network to serve all uses in industrial environment •URLLC, MBB & positioning ©3G4G
  • 19. NR-RedCap: New Feature in 3GPP Release-17 ©3G4G Requirements & Characteristics Premium 5G UEs Low tier 5G UEs Very low end eMBB URLLC Industrial sensors / video monitoring Low end wearables Relaxed IoT LPWA mMTC Latency Low Ultra Low Medium Medium Low/medium High Reliability High Ultra high Medium Medium/High High /ultra high Low Data rate High Low/High Medium Low -Medium Low/medium Low Device complexity High High Medium Low Low Very low Coverage Normal Normal Normal Normal normal Extreme Battery life Medium Medium Medium Long Long/Medium/NA Very long Connection density Medium Medium Medium High High/very high Very high Bandwidth requirement Wide Wide Medium Medium Medium Narrow Mobility Yes Yes Yes Yes Yes Nomadic Table Source: Qualcomm More details on 3G4G Blog NR-RedCap addresses new use cases with IoT-type of requirements that cannot be met by eMTC and NB-IoT
  • 20. RedCap Spider Diagram ©3G4G 0 2 4 6 8 10 Coverage Peak Data Rate Reliability Low Cost Battery Life Low Latency RedCap
  • 21. 5G Spider Diagram Combined with RedCap ©3G4G 0 2 4 6 8 10 Coverage Peak Data Rate Reliability Low Cost Battery Life Low Latency NB-IoT LTE-M (eMTC) URLLC eMBB RedCap
  • 22. Rel-15 baseline NR devices v/s Rel-17 RedCap devices ©3G4G Source: Ericsson
  • 26. References and Further Reading Links ©3G4G • 3GPP TR 38.875: Study on support of reduced capability NR devices (link) • RP-210918 : Support of reduced capability NR devices (NR_redcap) – Nokia, Ericsson • Ericsson Blog: What is reduced capability (RedCap) NR and what will it achieve? (link) • Thales view on 3GPP NR-REDCAP (link) • The 3G4G Blog: New 3GPP Release-17 Study Item on NR-Lite (a.k.a. NR-Light) (link) • RP 190831: Key directions for Release 17 – Nokia, Nokia Shanghai Bell • RP-190844: NR-Lite for Rel-17 – Qualcomm views • RP-191047: NR-Lite for Industrial Sensors and Wearables – Ericsson • RP-191175: Motivation for NR-lite: IoT over NR – Samsung • RP-1901227: New SID on NR-Lite devices and related technical enhancement – ZTE, Sanechips • RWS-210116: RedCap/ NR-Light Enhancements in Rel-18 – Nokia (link) • RWS-210504: Views on Redcap Enhancements for Rel-18 – Apple (link) • RWS-210267: Evolution of RedCap in Release 18 – Xiaomi (link)
  • 27. Thank You To learn more, visit: 3G4G Website – https://www.3g4g.co.uk/ 3G4G Blog – https://blog.3g4g.co.uk/ Telecoms Infrastructure Blog – https://www.telecomsinfrastructure.com/ Operator Watch Blog – https://www.operatorwatch.com/ Connectivity Technology Blog – https://www.connectivity.technology/ Free 5G Training – https://www.free5gtraining.com/ Free 6G Training – https://www.free6gtraining.com/ Follow us on Twitter: https://twitter.com/3g4gUK Follow us on Facebook: https://www.facebook.com/3g4gUK/ Follow us on LinkedIn: https://www.linkedin.com/company/3g4g Follow us on SlideShare: https://www.slideshare.net/3G4GLtd Follow us on YouTube: https://www.youtube.com/3G4G5G ©3G4G
  • 28. ©3G4G 0 2 4 6 8 10 Coverage Peak Data Rate Reliability Low Cost Battery Life Low Latency NB-IoT LTE-M (eMTC) URLLC eMBB RedCap