5G Mobile Communications - Recent R&D Results

5G Mobile Communications - Recent R&D Results

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Description: mmWave Challenges and Opportunities: high frequency- Larger high-frequency bands. Atmosphere loss, rain attenuation, foliage blocking. Outdoor-to-indoor penetration loss.

Semiconductor readiness, PA efficiency, power consumption. Samsung developed the world’s first mmWave mobile prototype to verify the feasibility of mmWave mobile communications. Global collaborative effort on mmWave channel modeling.

 
Author: Howard Benn PhD  | Visits: 470 | Page Views: 734
Domain:  High Tech Category: Mobile 
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Contents:
5G Mobile Communications
Key Enabling Technologies and Recent R&D Results

© 2016 Samsung Electronics

Innovation of Mobile Communications

5G
3G

2G

BW
Peak Data Rate
RAT
NW

200 kHz
1.25 MHz
115.2 kbps 307.2 kbps
GSM
CDMA
Circuit Switched Network

4G

5 MHz
2.048 Mbps
WCDMA
Packet Switched Network
© 2016 Samsung Electronics

20 MHz
150 Mbps
OFDMA
All-IP Network

Legacy Bands + mmWave Bands
Up to 20 Gbps
Post-OFDMA
Software Defined Network

5G Service Vision

Everything
on Cloud

Immersive
Experience

Giga-bit data rate
Ultra low latency

Giga-bit data rate
Ultra low latency

Ubiquitous
Connectivity

Massive connectivity
Ubiquitous coverage

© 2016 Samsung Electronics

Tele-Presence

Giga-bit data rate
Ultra low latency

5G Service Scenarios

© 2016 Samsung Electronics

5G Use Cases & Requirements

Peak 20 Gbps
Edge 100 Mbps

eMBB

enhanced Mobile-Broadband

UR/LL

Ultra-Reliable & Low Latency

10-9 Error-rate
1ms Latency

mMTC

massive Machine-Type Communications

106 Connections/km2
10 year Battery-life

※ ITU-R document 5D/TEMP/625

© 2016 Samsung Electronics

New Spectrum Opportunities
“Below 6 GHz” and “Above 6 GHz” Spectrum Bands Considered for 5G
Much larger bandwidths available in spectrum bands above 6 GHz
FCC NPRM : 28 / 37 / 39 / 64-71 GHz considered for mobile radio services

Below 6 GHz

Above 6 GHz

-6
APT

1427
-1452

6-20

20-30

1492
-1518

25.25
-25.5

CEPT

1427
-1518

3400

CITEL

1427
-1518

3400
-3600

10
-10.45

-6425

23.15 24.25
27.5
-23.6
-27.5

40-50

-29.5

25.5
-27.5

3400
-3600

31.8
-33
31.8
-33.4

50-60 60-70 70-80 80-100

39
-47

31.8
-33.4

-27.5

5925

1452
-1518

31.8
-33.4

24.5
-3800

RCC

ASMG

30-40

40.5
-43.5

37

39.5 40.5
-40.5 -41.5

66
-76

45.5

66
-48.9

45.5
40.5

47.2 50.4
-50.2 -52.6

-47

47.2 50.4
-50.2 -52.6

45.5
48.5 50.4
-47.5 -50.2 -52.6

-71

81
-86

71
-76

81
-86

59.3
-76
66

-71

71
-76

81
-86

31

Single band implementation for few giga-herts range exptected
© 2016 Samsung Electronics

MHz
GHz

mmWave Challenges and Opportunities
Path Loss Model in Urban Environment

Larger path-loss at high frequency bands
Atmosphere loss, rain attenuation, foliage blocking
Outdoor-to-indoor penetration loss
Semiconductor readiness, PA efficiency, power consumption

Samsung developed the world’s first mmWave mobile prototype
to verify the feasibility of mmWave mobile communications
Global collaborative effort on mmWave channel modeling

© 2016 Samsung Electronics

mmWave Channel Modeling
Leading Channel Modeling Activity toward Outdoor Cellular Deployment
Gbps data rate support envisioned by mmWave propagation analysis

Calibration

Measurement Campaign
28 GHz
Channel
Sounder
[TX]

170
NYU Measurement
New York Ray-Tracing

90

160

Path Loss (dB)

60
50
40

Angle Spread Cal.

10

1

2

3

4

5
6
7
Measurement Index #

Pathloss Cal.

110

8

9

100
50

10

80
100
150
Distance between transmitter and receiver (m)

Delay Spread in NLoS

160

Standard

200

Rapporteur on 3GPP 5G Channel Model SI
for > 6GHz

Path Loss [dB]

130
120
110
100
90
80
70
60
1

RX Azimuth Angle Spred in NLoS

1



Pathloss Model
n,Synthesized Omni-NLoS

10

Distance [m]

50

= 6.08dB

100 150 250

1

0.9

Synthesized Omni-NLoS
nSynthesized Omni-NLoS = 3.58

140

T
X

5G PPP mmMAGIC, COST IC1004

0.9

0.8
0.7
0.6
0.5

Measurement (Daejeon NLoS)
Modeling (Daejeon NLoS)
Measurement (Alpensia NLoS)
Modeling (Alpensia NLoS)

0.4
0.3

E[
0.2

0

DS

] =55.4292 ns
Daejeon

] =60.4132
Delay Spread ns
E[DS

0.1

0

50

100

150

Cumulative Distribution Function (CDF)

2018 Winter Olympic Resort

150

T
X

130

Channel modeling
Cumulative Distribution Function (CDF)

NYU campus

[RX]

Research projects

140

120

20

0

NYU, USC, KAIST

150

70

30

NLoS
Rx

Measurment Samples - NYU Campus
Measurement-based Pathloss Model (NLoS)
Ray-tracing Samples - NYU Campus
Ray-tracing-based Pathloss Model (NLoS)

80

Angular Spread

Tx

Universities & research centers

Comparison of propagation models : 28GHz

Angle Spread Comparison @ New York
100

0.8
0.7
0.6
0.5
Measurement (Daejeon, NLoS)
Modeling (Daejeon, NLoS)
Measurement (Alpensia, NLoS)
Modeling (Alpensia, NLoS)

0.4
0.3

o

0.2

E[AoA spreadDaejeon]=31.3912

E[AoA Spread
Angle spread ]=43.1066

o

0.1

Alpensia

Alpensia

200

250

300

0

RMS Delay Spread [ns]

© 2016 Samsung Electronics

0

20

40

60

AoA spread [deg]

80

100

120

mmWave Testbed / Chipset Development
World’s 1st mmWave Testbed and Antenna/RFIC for Mobile Device

28GHz Array Antenna Module
25 mm

56 mm

5 mm
42 mm

Beamforming CMOS RFIC / GaAs FEM

© 2016 Samsung Electronics

Handover
mmWave Multi-Cell Handover with 3 Test Base Stations

Base Station RFU
Start/End
Point
2.5 mm

Mobile Station RFU

© Samsung Electronics. All Rights Reserved. Confidential and Proprietary.

10

World’s 1st mmWave Multi-Cell Handover
Handover Tests in 3-Cell Network (Average ISD : 178m)
Handover Latency of 21 ms with Fast Adaptive Hybrid Beamforming
Average Throughput of 1.67 Gbps at Driving Speed of 25 km/h

© 2016 Samsung Electronics

5G New Waveform (Post-OFDM)
Post-OFDM Multicarrier Technology
Spectrum efficiency enhancement and flexible spectrum utilization through new waveform design

Service-specific commun. in a limited freq. band
Need for a new waveform enabling efficient spectrum utilization

Efficient spectrum utilization examples
Spectrum Utilization

Well-localized spectrum

5G New
Waveform

Power Spectrum

4G
Waveform

Power Spectrum

System Bandwidth










Frequency







4G LTE
Waveform
Wasted
spectrum

5G New
Waveform

97.9%
84.1%

4G LTE
5G New
Waveform Waveform

Efficient spectrum usage for multiple services
More
services
available!

UHD
Smart
Streaming Meter

Smart
Vehicle

Spectrum Utilization
91.2%
61.1%

5G New
4G LTE
Waveform Waveform

© 2016 Samsung Electronics

5G New Waveform (Post-OFDM)
QAM-FBMC : A Post-OFDM Multicarrier Technology

Post-OFDM multicarrier technology

Spectrum fragmentation performance test

Well-localized spectrum by per-subcarrier filtering
QAM transmission

Main benefits
Well-localized spectrum  Efficient coexistence with other RATs
Time/frequency overhead reduction  Enhanced spectral efficiency

RB-unit in-band spectrum nulling
Spectrum comparison between OFDM and QAM-FBMC
Interference suppression gain (>23dB) against OFDM

OFDM

QAM-FBMC

(In Frequency)

(In Time)

© 2016 Samsung Electronics

Power Efficient Modulation : FQAM
Combines the Virtues of QAM and FSK modulation
Energy efficient & good performance in a low SNR region, useful for coverage extension
Low PAPR when combined with OFDMA due to small number of active subcarriers

A QAM symbol transmission on a single tone selected a
mong a group of tones
4-QAM

4-FSK

S2

S1

S3

Inherits the energy efficient nature of FSK
Low PAPR when combined with OFDMA

16-FQAM

S4

Freq

© 2016 Samsung Electronics

Low Complexity Channel Coding : LDPC
A Promising Channel Coding Scheme for Multi-Gbps Support with Low Power Consumption
5G peak data rate is 10 Gbps to 20 Gbps
Low power consumption and small implementation area is essential

LDPC shows 10 times lower power w.r.t. Turbo

LDPC shows 5 times smaller area for decoder implementation
100

Turbo

10000

Turbo

10
1000

LDPC

LDPC

10 times
1

100

10

ASIC Process

0.1

[1] M. May, T. Ilnseher, N. Wehn, and W. Raab, "A 150Mbit/s 3GPP LTE tubo code decoder," in Proc. DATE, Mar. 2010.
[2] S. Belfanti, etc., "A 1Gbps LTE-advanced turbo-decoder ASIC in 65nm CMOS," in Symposium on VLSI Circuits Digest of Technical Papers, 2013.
[3] Y. Sun, J.R. Cavallaro, "Efficient hardware implementation of a highly-parallel 3GPP LTE/LTE-advance turbo decoder," INTEGRATION, the VLSI journal, 2011.
[4] M. Weiner, B. Nikolic, and Z. Zhang, "LDPC decoder architecture for high-data rate personal-area networks," IEEE Symp. Circuits and Systems, 2011.
[5] S.-Y. Hung, etc., "A 5.7Gbps row-based layered scheduling LDPC decoder for IEEE 802.15.3c applications," IEEE Asian Solid-State Circuits Conference, Nov. 2010.
© 2016 Samsung Electronics

5 times

Massive MIMO Technology
FD-MIMO with Massive Antenna Technologies
2D array based adaptive beamforming at the base station
Higher-order MU-MIMO with 3D beamforming

3D-Beamforming
Elevation and azimuth beamforming
Full-dimension MIMO/BF support with 2D massive array

Support of larger number of antenna ports
MIMO/beamforming enhancements for both TDD & FDD

Higher-order MU-MIMO
Increased order of Multi-users
supported simultaneously

© 2016 Samsung Electronics

Massive MIMO Technology
FD-MIMO
High order (≥8 UEs) MU-MIMO demonstration by FD-MIMO System at 3.5 GHz

High-order multi-user MIMO with FD-MIMO PoC

20MHz BW TDD @3.5GHz, 32-TRX ports
Compact eNB with fully integrated array
antenna, RF, and baseband
Novel antenna calibration network and
compact array architecture

12-UE MU-MIMO indoor test: 422Mbps DL
aggregated throughput
Realtime demo at NIWeek2015 (Aug. 2015, Austin TX)
50 cm

LTE pre-release small-cell FD-MIMO

Support of adaptive 3D-Beamforming
and high-order MU-MIMO
Support of multi-user MIMO
up to 8~12 UEs simultaneously
30 cm

Inside
(RF/Antenna Board)

© 2016 Samsung Electronics

5G Flexible Network Architecture
Flexible Architecture based on SDN and NFV
Virtual NW function : easy upgrade by software change
Scalable/flexible architecture : dynamic instantiation of NFs

Flexible Function Location
Support for low latency applications

Flexible Architecture
Support divergent network requirements

Open network API
Network as a platform for innovative
service
© 2016 Samsung Electronics

5G Flexible Network Architecture
Network Slicing using NFV/SDN technology
Enable logically independent networks for different services
Support divergent requirements by instantiating required network functions on demand

OTT can manage the end to end connection by leasing the slice
UE may access multiple slices based per App’s needs

Virtual Radio Resource
Virtual Bandwidth
vCN (MBB)

MBB

vCN (UR/LL)

UR/LL

$$$
APP

Operator
OTT A

1) RAN Virtualization 2) Network Virtualization
(using SDN)
MTC

OTT Slice

vCN (MTC)

OTT A

Default Slice

3) NFV with Orchestration

© 2016 Samsung Electronics

5G BS

Internet

5G Core Cloud

Expected 5G Timelines
Standardization and Spectrum Allocation
2015

2016

2017

2018

2019

WRC-15
'15. 9

WRC-19

'16. 3
Channel
Model SI

2020

'17. 6
< 6GHz SI

'18. 9

IMT-2020
Specification

'19.12

< 6GHzWI
Further Enhancements

> 6GHz SI

> 6GHz WI

RAN 5G
Workshop

Rel-13

Rel-14

5G Standards

Rel-15

5G Phase I

Rel-16

5G Phase II
Tokyo
2020

© 2016 Samsung Electronics

Global 5G R&D Activities
Global 5G Initiatives with Samsung’s Active Engagements
5G PPP Association (Full Member)
Leading and Participating the EU Flagship 5G Projects

5G Forum Executive Board Member
Member of Giga KOREA Project

5GIC Founding Member
NYU Wireless Center
(Board Member)
Proposed NPRM
(28/37/39/64-71 GHz)
IMT-2020 Promotion Group
5GMF
(5G Mobile Promotion Forum)

Member of Future Forum
Contributor to 863 Project

© 2016 Samsung Electronics

Thank you

© 2016 Samsung Electronics