Panel on “Possible Game Changers in the 5G RAN”cscn2016.ieee-cscn.org/CSCN2016_5GRAN_Panel_DOCOMO.pdf · Panel on “Possible Game Changers in the 5G RAN ...

© 2016 NTT DOCOMO, INC. All Rights Reserved.

Panel on “Possible Game Changers in the 5G RAN”

NTT DOCOMO, INC., 5G Laboratory

Anass Benjebbour

IEEEE CSCN 2016, Oct. 31, Berlin, Germany

© 2016 NTT DOCOMO, INC. All Rights Reserved. 1

2014 2015 2016 2017 2018 2019 2020 202x

WRC15 WRC19

Rel. 13 Rel. 14 Rel. 15

5G launch

Requirements

Workshop

Proposals Specifications

5G+ launch

Channel Model SI

Commercial system development for 5G in 2020

Rel. 16

Technology SI

Requirement SI

WIs

WIs

Time Plan for 5G/5G+

5G experimental trials

http://www.itu.int/net/home/index.aspx


5G Services & Usage Scenarios

eMBB

mMTC URLLC

Source: ITU-R M.2083

Peak data rate 20Gbps (DL)

99.999% reliability within 1ms

1 million device/km2


New RAT (New Radio (NR) in 3GPP)

Massive MIMO/ beamforming

Massive MIMO/ beamforming

Cell range extension

Improved spectral efficiency

Well localized waveform

Well localized waveform

Frequency

Time

New numerology with shorter TTI

Wider bandwidth and low latency

New numerology with shorter TTI

Wider bandwidth and low latency

LTE

New RAT

f

t

Lean radio frame Less inter-cell interference, energy saving, good forward compatibility

Lean radio frame Less inter-cell interference, energy saving, good forward compatibility

5G 5G 5G 5G 5G

5G 5G +

5G 5G ++

5G +

5G (2020)

5G (202X)

Tight LTE integration

Flexible duplex with unlicensed spectrum

(e.g. LTE-assisted access)

Flexible duplex with unlicensed spectrum

(e.g. LTE-assisted access) Licensed

Band (LTE)

Unlicensed Band

(New RAT)

f

C/U-plane split (dual connectivity, CA)

C/U-plane split (dual connectivity, CA)

eLTE/ new RAT

(C/U-plane)

New RAT

(U-plane)

NOMA on LTE Further cellular enhancement

with massive connectivity

NOMA on LTE Further cellular enhancement

with massive connectivity

Intentional non-orthogonality

f NOMA

f OMA

IoT related LTE enhancements

Low cost / Long battery life devices

IoT related LTE enhancements

Low cost / Long battery life devices

5G Key Technologies

3

New Radio Access Technologies & New radio frame design 5G = New RAT + eLTE


Evolution Toward 5G+ & Beyond

4

2020 2025 2030

5G+ 5G

Freq.

More higher & wider freq. bands

More advanced technologies （e.g., Massive MIMO with higher number of antenna

elements）

Peak: Several Gbps Peak: Above 10Gbps

・ Existing frequency bands ・ New bands licensed by 2019 ・ Unlicensed bands?

Introduction of 5G New RAT +New bands licensed after 2020 (Tight interworking with LTE)

5G will evolve by incorporating new freq. bands and technologies Future compatibility is key for system design to continue evolution

5G will evolve by incorporating new freq. bands and technologies Future compatibility is key for system design to continue evolution

Max. 375 Mbps since June 2016 (DOCOMO) using LTE-Advanced

Max. 375 Mbps since June 2016 (DOCOMO) using LTE-Advanced


Existing frequency bands New bands over wide range of frequencies

Frequency

Low SHF

3-6GHz

High SHF

6-30GHz

EHF

> 30GHz

UHF

Ex. 800MHz, 2GHz

5G New RAT (OFDM-based) eLTE

5G (in 2020) New bands licensed by 2019

(+ Unlicensed bands)

5G RAT

Phased Approach for 5G Evolution

Tight interworking

New band licensed

after 2020

5G+ (in 202x)

New RAT enhancement

Phased approach for 5G standardization and commercialization

– 5G (in 2020) : eLTE + New RAT optimized for cmW (3-30GHz)

– 5G+ (in 202x) : 5G extension for all range of spectrum (up to 100GHz)


Deployment/Migration Scenarios for 5G/5G+

• In 2020, 5G will be launched initially from areas, where higher performance is required, e.g., dense urban area – Both new RAT (Phase I) and enhanced LTE (eLTE) RAT are introduced to realize tight

interworking between lower and higher frequency bands

Before 2020

2020

202x

• In beyond 2020, deployment areas for 5G are gradually expanded while introducing additional technologies and frequency bands (= 5G+) – LTE (or LTE-Advanced) cell can be continuously used as eLTE cell for a long-time

•Stand-alone new RAT might be deployed in the future

LTE LTE LTE LTE

eLTE LTE LTE LTE

New RAT

Fre

quenc

y

5G

eLTE eLTE eLTE eLTE

New RAT

Urban Area Suburban/rural Area

5G+

5G+

5G+ 5G+

New RAT New RAT New RAT

5G+ New RAT Stand-alone

Special use cases?

6


Use Case Support for 5G & 5G+

5G in 2020 5G+ in 202X

eMBB

mMTC URLLC

eLTE New RAT

eMBB

mMTC URLLC

eLTE New RAT

Low latency

New RAT will mainly focus on eMBB

New RAT will be enhanced for all use cases

5G will support both eMBB and MTC use cases together with LTE evolution

7


Potential Topics for 5G+ & Beyond

8

Backhaul

D2D

Access Access

1. Access/Backhaul/Side link integration – Coverage extension to 1km and beyond

– New numerology/waveform for backhaul & coverage

2. New frequency bands up to 100GHz and super massive MIMO with more than 10,000 antenna elements

3. Advanced duplex & interference cancellation

– Directional/Spatial division duplex (DDD/SDD)

– Advanced interference cancellation for dynamic TDD

4. Advanced service integration – Multiplexing (e.g., TDM/FDM/SDM (MU-MIMO)) of multiple numerologies

for eMBB/URLLC/mMTC services


Panel on “Possible Game Changers in the 5G RAN”cscn2016.ieee-cscn.org/CSCN2016_5GRAN_Panel_DOCOMO.pdf · Panel on “Possible Game Changers in the 5G RAN ...

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