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NOMA in 5G NR of 3GPP
Presentation · May 2018
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Yifei Yuan
ZTE Corporation
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Dr. Yifei Yuan
May 20, 2018
NOMA in 5G New Radio (NR) of 3GPP
ICC’18 NOMA Workshop, Kansas City, USA
• Motivations and scenarios
• Basic techniques
• Key auxiliary designs
• Progress in 3GPP standardization
CONTENTS
© ZTE All rights reserved
3
Major targets:
– Light connection
– Efficient transmission and high capacity
– Cost-effective receivers
Light control & high capacity/connectivity
NOMA transmission
UE
gNB
DL Synch.
Small packet
RACH Procedure
Power saving
state
Connected state/ULGrant /
Transmission
Success
Fail
Small packet
NOMA
Power saving
state
lighter
connection
Random Access Preamble
RAR
Message 4
1
2
3
4
UE
gNB
L2/L3 message
UL Grant
DL Synch.
Data Transmission
© ZTE All rights reserved
4
Grant-free NOMA vs. Grant-based for Uplink Small Data
Solution \Statistics Grant-free Grant-based
Avg. delay (ms) 4.4 9.1
Signaling overhead (%) 15% 53%
Pwr consumption (µJ/s) 47 677
10
-3
10
-2
10
-1
10
0
10
1
10
2
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Packet inter-arrival time - Uplink(s)
cdf
Heavy background: UL inter-arrival distribution
10
-3
10
-2
10
-1
10
0
10
1
10
2
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
interarrival time(s) - Uplink
cdf
Empirical CDF
Solution \Statistics Grant-free Grant-based
Avg. delay (ms) 5.2 5.9
Signaling overhead (%) 11% 7%
Pwr consumption (µJ/s) 321 2,142
Light background traffic load
Heavy background traffic load
Grant-free NOMA reduced delay, signaling overhead and terminal power
consumption, esp. for light traffic
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