URLLC key enablers for 5G and beyond systems
Assist. Prof. Hirley Alves
Machine-type Wireless Communications Group
Abstract
URLLC is an inherent part of 5G and is the
communication mode that imposes the greatest technicalchallenges for 5G and beyond systems.
6GFLAGSHIP.COM, #6GFLAGSHIP
6G will emerge around 2030 to satisfy the expectations
not met with 5G, as well as, the new ones fusing AI
inspired applications in every field of society with
ubiquitous wireless connectivity.
Vision for 2030 Our society is data-driven,
enabled by near-instant,
unlimited wireless connectivity.
6GFLAGSHIP.COM, #6GFLAGSHIP
6G will emerge around 2030 to satisfy the expectations
not met with 5G, as well as, the new ones fusing AI
inspired applications in every field of society with
ubiquitous wireless connectivity.
Vision for 2030 Our society is data-driven,
enabled by near-instant,
unlimited wireless connectivity.
6GFLAGSHIP.COM, #6GFLAGSHIP
Abstract
Even though some advancements have been made with 5G NR,
we are still far from enabling that vision.
What are the URLLC enablers for 5G and beyondsystems and their associated challenges?
6GFLAGSHIP.COM, #6GFLAGSHIP
6GFlagship.com, @6GFlagship
6GFLAGSHIP.COM, #6GFLAGSHIP
MTC for 5GB
LLC (URC-S) URC (URC-L)
Latency < 1ms
Very High coverage
Reliability > 99.999 %
Semi persistent
scheduling
Fast uplink grant
Coded random
access
NB-IoT
LTE-M
mMIMO
Grant free RA
NOMA
mMTC
High coverage
106 devices/km2
Low-cost devices
Long lasting battery life
6GFlagship.com, @6GFlagship
6GFLAGSHIP.COM, #6GFLAGSHIP
MTC for 5GB
MECNetwork
slicing
Short TTI
Machine learning
Fog
Finite
blocklength
coding
Packet duplication
HARQ
Multi-connectivity
Diversity Techniques
C-RANNetwork
coding
mMTC LLC (URC-S) URC (URC-L)
High coverage
106 devices/km2
Low-cost devices
Long lasting battery life
Latency < 1ms
Very High coverage
Reliability > 99.999 %
NOMA
Grant free RA
Semi persistent
scheduling
Fast uplink grant
Coded random
access
NB-IoT
LTE-M
NOMA
mMIMO
6GFlagship.com, @6GFlagship
6GFLAGSHIP.COM, #6GFLAGSHIP
MTC for 5GB
MECNetwork
slicing
Short TTI
Machine learning
Fog
Finite
blocklength
coding
Packet duplication
HARQ
Multi-connectivity
Diversity Techniques
C-RANNetwork
coding
mMTC LLC (URC-S) URC (URC-L)
High coverage
106 devices/km2
Low-cost devices
Long lasting battery life
Latency < 1ms
Very High coverage
Reliability > 99.999 %
NOMA
Grant free RA
Semi persistent
scheduling
Fast uplink grant
Coded random
access
NB-IoT
LTE-M
NOMA
mMIMO
Enablers
Diversity Techniques
Cooperative Diversity (HARQ)
6GFLAGSHIP.COM, #6GFLAGSHIP
P. Nouri, H. Alves, M. Latva-aho,``Performance Analysis of Ultra-Reliable Short Message Decode and Forward Relaying Protocols'', EURASIP Journal on Wireless Communications and
Networking, pp. 1-10, vol 2018, no 194, Aug 2018.
Finite Blocklength Coding
- 32 bytes payload
- 99.999% reliability
Enablers
Diversity Techniques
MIMO & FBC
6GFLAGSHIP.COM, #6GFLAGSHIP
O. Lopez, H. Alves and M. Latva-aho \Rate Control under Finite Blocklength for Downlink Cellular Networks with Reliability Constraints", IEEE ISWCS'2018, Aug. 2018, Lisbon, PT. arXiv:
https://arxiv.org/abs/1806.04386
Enablers
Diversity Techniques
MIMO & FBC
Rate and Power Control
6GFLAGSHIP.COM, #6GFLAGSHIP
O. L. A. López, H. Alves, and Matti Latva-aho, “Joint Power Control and Rate Allocation enabling Ultra-Reliability and Energy Efficiency in SIMO Wireless Networks,”, TCOM (cond. Accepted.).
Robust QoS guarantees
6GFlagship.com, @6GFlagship
- Diversity (cooperative, spatial,…)
- Multi-connectivity- Meet 32 bytes & 99.999% reliability
6GFLAGSHIP.COM, #6GFLAGSHIP
Challenges ahead
- Deterministic QoS
- High reliability under strict latency
- High Coverage & availability
6GFlagship.com, @6GFlagship
Kiitos!
Thanks!
Obrigado!
6GFLAGSHIP.COM, #6GFLAGSHIP
MTC
Group
https://sites.google.com/view/hirley-alves/group