5g/6g 기술및서비스동향 : 스마트시티, 위성기술 -...

5G/6G 기술 및 서비스 동향: 스마트시티, 위성기술

2019. 03. 08.아주대학교 김재현[email protected]

Wireless Internet aNd Network Engineering Research Lab.http://winner.ajou.ac.kr

Department of Electrical and Computer Engineering Ajou University, Korea

2019 New Value Forum

Contents

2

01. 5G NR Key Technologies

02. 5G Use cases: 5G Smart City

03. 6G: Capacity Enhancement with Satellite Communications

04. Conclusions

q 5G, Another Generation for More Capacity?

5G Vision : What is 5G?

3

• 5G Goes Beyond Smartphones • 5G as an Extended End-to-End Ecosystem

1G

2G

3G

4G

5G

Mbps

kbps

bps

Mbps

kbps

bps

Gbps

20202010200019901980

AMPS

?

AMPS

? Mobile device for everyone

Time

data

data

data

data

New view on 5G @ 2015

Emerging Concepts and Technologies towards 5G+ Wireless Networks, Tutorial by Prof. H. Yanıkömeroğlu, GLOBECOM 2016

- Bigger hypercube

5G NR Key Technologies- PHY 비교: 5G NR(Phase 1) vs. LTE Rel. 13

4

Category Item 5G NR Phase 1 LTE Rel. 13

Numerology

Bandwidth5MHz ~ 400MHz

(UE BW can be smaller then system BW)

1.4/3/5/10/15/20MHz

(UE BW: 20MHz mandatory)

Subcarrier SpacingFlexible: 15/30/60/120/240

(Multiple SCS possible)Fixed: 15kHz

TTI

Flexible: 1 OFDM symbol ~

A number of consecutive symbols in the

time domain in one transmission direction

Fixed: 14 OFDM symbols (1ms)

Channel CodingData channel LDPC code Turbo code

Control channel Polar code Convolutional code

WaveformDownlink CP-OFDM CP-OFDM

Uplink CP-OFDM & DFT-S-OFDM DFT-S-OFDM (SC-FDMA)

MIMODimension

Max. 8 layers SU-MIMO

12 orthogonal DMRS for MU-MIMO

Max. 8 layers SU-MIMO

4 orthogonal DMRS for MU-MIMO

MIMO CSI Report Designed for both SU/MU-MIMO Optimized for SU-MIMO

q System Architecture : 4G EPS vs. 5G System

5G Key Technologies : Core Network

5

• Evolved Packet System (EPS) • 5G SystemSGSN

GERAN

UTRAN

Non-3GPP Access

(WLAN, WiMax, 3GPP2, etc.)

Node B

BTS

eNodeB

MME

S-GW

P-GW

ePDG

3GPP AAA server

HSS PCRF

EUTRAN

Evolved Packet CoreUE

UE

UE

UE

ePDG: evolved packet data gateway

- Simplified/flat architecture- Packet-optimized network- Always-on connectivity to the PDN- Radio access network:

3GPP access vs. non-3GPP accessè Separate control for non-3GPP access

A single converged (common) core network for the inhomogeneous access networks

N3

NSSF AUSF UDM

5G-AN

AMF SMF PCF

UPF

N2

N9

N14 N15

N11 N7

N22 N12 N8 N10

N4

N13

- CP/UP separated (CUPS) - Modularized function design- 5G access network:

NG-RAN vs. untrusted (non-3GPP access)è Minimized dependency on access network by a

single class of common NFs (AMF, SMF, PCF…)

q 5G System Architecture : Overview (1/2)Ø System Architecture for Next Generation Core Network

Ø Key Features


6

Service-based architecture (SBA)

UE (R)AN UPF

AF

AMF SMF

PCF UDM

DNN6

NRFNEF

N3

N2 N4

AUSF

Nausf Namf Nsmf

NpcfNnrfNnef Nudm Naf

NSSF

Nnssf

gNB, eNB, ng-eNB

Functional split between NG-RAN and 5GC

- Converged core network (common CN interface & control for non-3GPP access)- Software & cloud-friendly core network (dynamically changing the computing node for the same logical AMF)- Flexible & efficient user plane architecture (Flexible session control, e.g., UPF change for MEC)- Simplified & efficient control plane architecture (NF modularization & procedure separation)- Enhancement to support for applications and services (network/capability exposure)- Network data analytics function (NWDAF) for AI & Big Data-based network automation

q 5G System Architecture : Overview (2/2)Ø Overall Architecture


7

gNB : node providing NR user plane and control plane protocol terminations towards the UE, and connected via the NG interface to the 5GC.ng-eNB : node providing E-UTRA user plane and control plane protocol terminations towards the UE, and connected via the NG interface to the 5GC.NG-RAN node : either a gNB or an ng-eNB.Xn : network interface between NG-RAN nodes.

Functional split between NG-RAN and 5GC

Contents

8




04. Conclusions

5G 스마트시티- 5G 포럼 스마트시티 위원회 소개

9

q 5G 포럼 스마트시티 위원회 소개

5G 스마트시티- 5G 포럼 스마트시티 위원회 소개

10

q 5G 포럼 스마트시티 위원회 역할과 목표

5G포럼스마트시티위원회활동목표

01

국내외스마트시티사업주체와의교류확대국내산업생태계구축및중소기업지원

정부주도스마트시티시범서비스지역내에5G 스마트시티솔루션제공과他도시확산이

가능하도록필요한요구사항도출및관련기관소통

5G 스마트시티에대한개념정의및비전제시

5G 스마트시티비전제시및도입기반마련 02국내외스마트시티사업주체와의교류확대

및5G 스마트시티토털솔루션제공

5G 스마트시티생태계구축

5G 스마트시티기술동향파악,표준화연계기술개발방향제시,

테스트베드등검증환경조성등지원

5G 스마트시티의기술우수성,사업우수성, use case에대한홍보, 백서발간등

5G 스마트시티- 5G 스마트시티의 필요성

11

q 5G 포럼의 스마트시티 구조 및 비전Ø 5G 포럼에서 정의하는 5G 스마트시티 비전

ü 초광대역, 초연결, 초저지연/고신뢰의5G 기술을스마트시티에적용하여지능화된첨단시민사회실현

ü 스마트시티관련산업생태계조성하고사회적비용절감을위한공공가치창출을통해시민의삶의질을향상시키는혁신성장사회를구현

Ø 5G 비전 수립을 위한 서비스 3대 추진전략ü 지속적이고진화가능한미래가치지향서비스ü 시민중심의체감형맞춤형실감서비스ü 개방적이고융합연계가능한서비스

Ø 서비스가 구현을 위해 필요한 주요 5G 기술ü 액세스기술: NB-IoT, eMTC, SmallCell, NTN 등ü 네트워크기술: MEC, Network slicing, NCE 등ü 데이터플랫폼기술: AI, Big data, 블록체인 등

국내 스마트시티 연구동향(1) 국가 스마트시티 시범도시

12

q 4차산업혁명위원회와 국토교통부 스마트시티 시범도시 기본 구상안 발표Ø 2021년까지 부산시(1조 원)과 세종시(7000억 원)에 스마트시티 시범 도시 조성

부산강서구에코델타시티의3대특화전략① 혁신산업생태계도시② 친환경물특화도시③ VR과 증강현실, BIM 기술과3차원지도를활용한가상도시

강서구에코델타시티(강동동, 대저2동일대)부산

세종5-1 생활권의4대핵심사항

연동면5-1 생활권세종

①모빌리티 ②헬스케어 ④에너지③교육

도시의용도를구분짓지않고리빙/소셜/퍼블릭으로만구분하는용도지역없는도시(용도혼합및가변) 추구

“

국내스마트시티 연구동향(2) 국가전략프로젝트 스마트시티

13

q 국토교통과학기술진흥원(KAIA)의 국가전략프로젝트 추진과제 과제 구성 및 체계Ø 사업목표: 도시별 구체적 이슈해결 및 기술혁신 솔루션 개발로 도시경제 활성화Ø 과제구성체계: 총괄관리와 공통 핵심기술 개발을 위한 1개 핵심과제, 기술개발 검증을 위한 실증도시

핵심과제 2개

스마트시티의데이터허브구축을위한핵심공통기술을개발하고, 실증과제를효과적으로진행할수있는관리시스템, 협력체계, 제도등을마련

기본인프라가자리잡은도시의경우, 시민이불편함을겪고있는도시내문제를해결하고자서비스∙기술개발및검증에초점을두어스마트시티도입→ 문제해결형접근법

도시가산업적으로침체되어신산업을진작시키거나, 쇠퇴하는도시등에디지털기술을접목하여지속가능한도시경제성장및재생을위한목적으로지역공동체가참여하는스마트시티모델→ 지속가능성장형접근법

스마트시티모델기반기술개발(총괄)1핵심

기술혁신및비즈니스창출을위한리빙랩형실증(지구/지역단위)3핵심

서비스고도화를위한Use Case형실증(도시단위)2핵심

• 국가전략프로젝트스마트시티, KAIA, 2018.05.06.


14

q 국토교통과학기술진흥원(KAIA)의 국가전략프로젝트 추진과제 사업추진 예산Ø 5년간 총 예산 1,159억원 (정부출연금 843억원 포함)

핵심 세부과제명 소관부처예산 총계(단위: 억원)

정부 민간 지자체 총계

1핵심스마트시티모델및기반

기술개발(총괄)

제1핵심과제총계 222 58 - 280

1-1 . 도시데이터관리및기술표준, 아키텍처모델제시 국토부 51 13 - 34

1-2 . 임무중심형스마트시티공통기술개발및고도화 과정부 135 45 - 180

1-3. 스마트시티관리모델개발및기술검증 국토부 36 - - 36

2핵심스마트시티서비스

고도화를위한Use Case형실증(Civic City)

제2핵심과제총계 358 120 33 511

2-1. 도시수요기반스마트시티Use Case 개발(교통) 국토부 72 28 8 107

2-2. 도시수요기반스마트시티Use Case 개발(안전) 국토부 58 20 1 79

2-3. 도시수요기반스마트시티Use Case 개발(도시행정) 국토부 42 15 3 60

2-4. 개방형데이터허브센터구축(Use Case형) 국토부 122 36 16 174

2-5. 데이터기반스마트서비스Use Case 개발(지자체제안) 과정부 63 23 4 90

3핵심기술혁신및비즈니스

창출을위한리빙랩형실증(Inno City)

제3핵심과제총계 263 89 16 368

3-1. 환경분야스마트시티리빙랩구축 과정부 28 10 2 40

3-2 . 에너지분야스마트시티리빙랩구축 국토부 42 15 3 60

3-3 . 생활복지분야스마트시티리빙랩구축 국토부 39 10 - 39

3-4. 개방형데이터허브플랫폼구축(리빙랩형) 과정부 95 32 11 138

3-5. 지역수요기반의스마트시티비즈니스모델개발(시범도시) 공통 68 23 - 91합계 843 267 49 1,159



15

q 국토교통과학기술진흥원(KAIA)의 국가전략프로젝트 추진과제 과제구성 및 연계도

교통

운행정보 화물운송

대중교통 주차시설

안전

산사태 조기대응

사고현장 긴급구난

도시행정

시설물통합 3D모델링

크라우드소싱포털

에너지

BEMS

에너지미터

환경

대기오염

미세먼지

생활/복지

장애인지원

독거노인

②스마트시티서비스고도화를위한Use Case형실증(Civic City) ③기술혁신및비즈니스창출을위한리빙랩형실증(InnoCity)

도시통합운영센터데이터처리

유관기관(관계부처, 지자체등)

데이터저장 데이터분석 데이터활용

관리표준화,전처리플랫폼등

클라우드,보안등

빅데이터분석,GIS 융합등

의사결정지원,인공지능등

①개방형도시데이터허브

데이터공유

표준API 기반데이터연계

U-City 사업구축인프라

IoT실증사업구축인프라

기타스마트시티인프라기타스마트시티인프라

표준API 기반정보수집

① 스마트시티모델및기반기술개발 ② 시민중심의서비스창출형실증 ③ 지속가능한성장을위한도시혁신형실증§ 스마트시티의구현을위한핵심공통기술을개발하고,

실증과제를효과적으로진행할수있는시스템, 협력체계, 제도등을마련

§ 본시민이불편함을겪고있는도시내문제(교통, 안전, 행정등의분야)를해결하고자서비스∙ 기술개발및검증에초점을두어Use Case 형태실증

§ 도시성장및재생을위한경제적요소, 지속가능성을위한환경/에너지측면의요소, 균형이있는발전을위한생활/복지측면의요소를결합하여시티랩(다수리빙랩포함) 형태로실증

대구 시흥


해외스마트시티 연구동향- 5GCity Project

16

q 5GCity Project by 5GPPP (2017.06.01~2019.11.30, 30months)Ø 5GCity의 목표: to build and deploy a common, multi-tenant, open platform that

extends the (centralized) cloud model to the extreme edge of the network, with a demonstration in three different cities (Barcelona, Bristol and Lucca)ü WP 1. Project Managementü WP 2. 5GCity Architecture, Requirements and Use Casesü WP 3. 5GCity Virtualization Platformü WP 4. Scalable Management & Orchestration, and Service Programming Modelsü WP 5. 5GCity Use Cases piloting and validationü WP 6. 5GCity dissemination, exploitation, and standardization

• https://www.5gcity.eu/

Bristol

Lucca

Barcelona


17

q 5GCity Architecture Ø 5GCity architecture and physical resources can be described as a set of functional blocks

grouped in functional area

• 5GCity: Use Cases for Smart Cities to improve the 5G eco system using a strong partnership between industrial and research area, IEEE 5G SUMMIT Trento, 2018.05.06.

§ The Neutral Host (infrastructure owner) is able tooperate a partition of its resources and to arrangethem in asset of homogeneous tenants (or slices)

§ The 5G architecture is expected to accommodate awide range of Use Cases with advancedrequirements, especially in terms of latency,resilience, coverage, and bandwidth


18

q 5G City platform high level architecture

• 5GCity: Transforming Cities into Hyper-Connected World, Gino Carrozzo, EUCNC 2018, 2018.06.14.


19• 5GCity: Transforming Cities into Hyper-Connected World, Gino Carrozzo, EUCNC 2018, 2018.06.14.

Telecom Use Case(Neutral Host)

Industry Vertical(Media)

City Services(Video

Anlaytics)

5G Edge computing technologies (sw+virtualization development)

5G City distributed infrastructure (city hardware)Barcelona, Lucca, Bristol

5GCity scope

§ 시나리오1 –Telecom Use CaseØ 5G city leverages its virtualization platform in

order to enable the cities (or any infrastructure provider) to create dynamic end to end slices contacting both virtualized edge and network resources and lease it to third-party operators

§ 시나리오2 – Industry Vertical(Media)Ø is related to different aspects of the media and

entertainment industryØ Video acquisition, editing and delivery

§ 시나리오3 –City ServicesØ is tailored to the specific needs of the city of Lucca

– which holds some yearly events that are highly disproportionate to the city size, resulting in a number of issues including illegal waste dumping

q 모든 Use Case는 3가지 시나리오로 구분


20

q 6 key Use Cases to evaluate 5G impact on Smart Cities


ID Use Case NameCity

Barcelona Bristol Lucca

UC1 Unauthorized Waste Dumping Prevention(Monitor urban areas under the risk of environmental abuse, to prevent unauthorized dumping of waste) Yes

UC2 Neutral Host Yes Yes Yes

UC3Video Acquisition and Production + Community media engagement in live events(Acquire HQ videos via mobile applications at events and stream them through the 5G Network)

Yes Yes

UC4UHD Video Distribution Immersive Services(Develop an application that uses Mixed Reality, user movement tracking and computer vision algorithms to create an augmented tourist guide that can work both indoors and outdoors)

Yes Yes

UC5 Mobile Backpack Unit for Real-time Transmission(Acquire HQ videos via mobile applications at events and stream them through the 5G Network) Yes

UC6 Cooperative, Connected and Automated Mobility Yes


21

q 5G City Use Cases and 5G Groups


5G Groups 5G City Use Cases

eMBB - Broadband access everywhere All

mMTC - Massive internet of things UC4, UC5, UC6

Extreme real time communication UC2, UC4, UC5, UC6

uRLLC/uMTC – Ultra reliable communication and Low latency Communication All

5G Traffic Requirement UC1 UC2 UC3 UC4 UC5 UC6

Device Density Low High Medium Medium Medium High

Mobility Static/Low High Medium Medium Medium High

Infrastructure Medium Medium Medium Medium Medium Medium

Traffic Type Period/Event driven All types Continuous/

Event drivenContinuous

/Event drivenContinuous

/Event drivenContinuous

/Event driven

Use Data Rate Low High Low High Medium Medium

Latency Low Low Low Low Low Low

Reliability High High High High High High

Availability High High High High High High

5G Forum의 5G 기반 스마트시티 백서

q 2019년 4월 발간예정 (153 페이지 분량)

22

제1장서론

제2장 5G 서비스시나리오및요구사항

제3장 5G기반스마트시티서비스를위한기술

제4장스마트시티국내외동향

제5장표준화및인증

제6장법률관련제언및기타사항

5G Forum의 5G 기반 스마트시티 서비스 시나리오

q 5G 기술 기반 14가지의 스마트시티 서비스 시나리오 제시

23

< 5G 융합 서비스 시나리오 기준에 의한 분류 >

< 5G 핵심 기술에 의한 분류 >

번호 5G 기반 스마트시티 서비스 시나리오 이름

1 실감 몰입형 AR/VR 서비스

2 스마트 헬스케어 서비스

3 재난정보 공유 서비스

4 5G 홈셀을 이용한 초다시점 실시간 VR 스포츠 중계 서비스

5 보행자 친화형 다목적 횡단보도

6 스마트 거리 지도 (Smart Street Map)

7 Massive Connectivity 기반 지능형 IoT 서비스

8 5G 인증/미인증 IoT 기기 접속 서비스

9 IoT 기반 대기환경정보 분석 서비스

10 IoT기반 드론 관제 서비스

11 Connected Car

12 홀로그램을 이용한 재난사고 발생 지역 예측

13 수요 응답형 자율주행 교통체계

14 스마트 안전 부스 (Smart Safe Booth)

5G Forum의 5G 기반 스마트시티 서비스 시나리오

q 14가지 서비스 시나리오 요구사항 분석Ø 8개의 요구사항과 기준 제시

24

요구사항 정의요구사항 등급

Low level Mid level High level

1. Device density 단말의밀도,단위면적당집적도 보통: 100 thousand/km2이하 높음: 100 thousand/km2 이상(LTE) 매우높음: 250 thousand/ km2 이상(5G)

2. Mobility 단말의이동속도 보통: 최대100 km/h 빠름: 최대250 km/h (LTE) 매우빠름: 350 km/h 이상 (5G)

3. Coverage 서비스지리적영역 보통: 100m 이내 넓음: 100m ~ 1km 매우넓음: 1km 이상

4. Traffic type 트래픽의종류 연속적, 주기적, 이벤트성, 실시간

5. User data rate 사용자별데이터전송률 보통: 1Gbps 이하 높음: DL 1Gbps (LTE) 매우높음: DL 20 Gbps(5G)

6. Latency 전송지연 보통: 10ms 이상 짧음: User plane 10ms (LTE) 매우짧음: User plane 1ms (5G)

7. Reliability 전송신뢰도 보통: 95.0% 이하 높음: 95.0%~99.99% (LTE) 매우높음: 99.99%이상(5G)

8. Positioning 측위정밀도 보통: 10m 이내 정밀: 2m 이내 초정밀: 0.2m 이내

Contents

25




04. Conclusions

SoF : Current Trends in Satellite Communications

q 국가별 우주개발 투자Ø 2017년 예산을 기준으로 전세계의국가들이 우주개발에 투자한 총 예산44 B USD (약 47조원)

Ø한국은 NASA, ESA, …, 인도 다음인세계 10위로 643 M USD (6850억원)예산을 투자

<국가별공공우주개발예산>26

세계 10위

SoF : ESA Copernicus program 1/4

27[1] https://www.sinergise.com/en/news/sentinel-hub-powering-copernicus-data-and-information-access-services

<Copernicus DIAS [1]>

<Copernicus programs>


28

29


30


[2] https://youtu.be/W3fv7TUmqf8

q What is the SENTINEL mission ?

31

q Recap of Falcon 9 launch and landing by SpaceX Ø발사체 시스템 재사용으로 위성 발사 비용 감소

SoF : Reusable Rocket Development

[3] https://www.youtube.com/watch?v=ANv5UfZsvZQ

q 통신분야의 위성군 프로젝트ØMicro Sat, Nano Sat, Cube Sat 등 기술발전과, 통신/관측의 융합 서비스가 가능성에

서 주목을 받으며, 현재 다양한 형태의 중궤도 및 저궤도 위성통신 시스템 제안

ü 브로드밴드 시스템• OneWeb,Starlink, • Leosat,O3b, mPower• ISIS, AISTECH,• Planet Labs

ü 그 밖의 시스템• Sprie

32

SoF : Small Satellite of Future 1/3


q 지구 관측 위성 투자/개발 현황Ø 100’s EO SATs to be launches by Private sector By 2025

Company Raised($M)

Current/Planned# of SATs

Resolution (2/5m)

Full Constellation Deployment

Hera systems 4.2 0/48 0.25/1 2020Planet Labs 18.3 150/200 (June,’18) 3/5 2018

BlackSky Global 53.5 0/60 1 2019OmniEarth 10.3 0/18 2/5 2019

Planetary Resources 22.5 0/10 10 2020+AxelSpace 15 0/50 2.5 2020+

IceEys 2.8 0/40 - 2020

Terra Bella Sold to Planet 2/15 0.9/2 2018

Airbus+ Bill Gate +Soft Bank ? 0/500

33


34

q Planet LabsØDetect changes in infrastructure [16]

ü North Korea’s Chemical Material Institute manufactures materials used in development of ballistic-missile warheads.

[5] https://www.planet.com/markets/defense-and-intelligence/

US Retail Traffic World Oil StorageIndex

Global Water Reserves Poverty Mapping Agriculture

35

SoF : Satellite Information Convergence Service

US Retail Traffic

36


37

World Oil StorageIndex


38

Global Water Reserves


Poverty Mapping

39


40

Agriculture

SoF : Small Satellite of Future

5G standardization roadmap (NTN)

q 3GPP Release 16 NTN Study ItemØ To study channel models, to define the deployment scenarios as well as the related

system parameters and to identify and assess potential key impact areas on the NR

41Intergation of non-terreistrial solutions in the 5G standardisation roadmap, “https://artes.esa.int/news/integration-non-terrestrial-solutions-5g-standardisation-roadmap”

RAN3: terrestrial radio access architecture and interface protocols specification

RAN2: Interface architectures, protocols, and resource control

RAN1: Interface Physical layer

5G Use Cases wherein Non-Terrestrial Network components have a role

q 5G use cases for Satellite access networks

42

5G service enabler

5G Usecase

5G Use case description Satellite service3GPP

References

eMBB

Multiconnectivity

• Users in underserved areas are connected to the 5G network via multiple network technologies and benefit from 50Mbps+

• Delay sensitive traffic may be routed over short latency links while less delay sensitive traffic can be routed over the long latency links

• Broadband connectivity to cells or relay node in underserved areas in combination with terrestrial wireless/cellular or wire line access featuring limited user throughput

TS 22.261TR 22.863TR 22.864

Fixed cellconnectivity

• Users in isolated villages or industry premisesaccess 5G services and benefit from 50 Mbps+

• Broadband connectivity between the core network and the cells in un-served areas (isolated areas)

TR 22.863

Mobile cellconnectivity

• Passengers on board vessels or aircrafts access 5G services and benefit from 50 Mbps+.

• Broadband connectivity between the core network and the cells on board a moving platform (e.g. aircraft or vessels)

TS 22.261 TR 22.863

Networkresilience

• Some critical network links requires high availabilitywhich can be achieved through the aggregation of two or several network connections in parallel

• The intent is to prevent complete network connection outage

• Secondary/backup connection (although potentially limited in capability compared to the primary network connection)

TR 22.863

※ eMBB (enhanced Mobile Broadband)



43

5G service enabler

5G Usecase


References

eMBB

Trunking

• A network operator may want to deploy or restore 5G service in an isolated area (not connected to public data network)

• A network operator may want to interconnect various 5G local access network islands not otherwise connected

• Broadcast channel to support Multicast delivery to 5G network edges

TR 22.863

Edge network Delivery

• Media and entertainment content updates are transmitted in multicast mode to a RAN equipment at the network edge where it may be stored in a local cache or further distributed to the User Equipment.

• The intent is to offload popular content from the mobile network infrastructure (especially at backhaul level).

• Broadband connectivity combined with terrestrial cellular access to connect a cell/group of cells or relay node(s) on board moving platforms.

TS 22.261TR 22.864

Mobile cellhybridconnectivity

• Passengers on board public transport vehicles access reliable 5G services. They are served by a base station which is connected by a hybrid cellular/satellite connection. The cellular connectivity may be intermittent and/or support limited user throughput

• Broadcast/Multicast service to access points in homes or on board moving platforms

TS 22.261TR 22.862 TR 22.863




44

5G service enabler

5G Usecase


References

eMBB

Direct to Node broadcast

• TV or multimedia service delivery to home premises or on board a moving platform

• Broadcast/Multicast service to access points in homes or on board moving platforms

TS 22.261TR 22.864

Direct to mobile broadcast

• Public safety authorities want to be able to instantaneously alert/warn the public (or specific subsets thereof) of catastrophic events and provide guidance to them during the disaster relief while the terrestrial network might be down

• Automotive industry players, are interested to provide instantaneously Firmware/Software Over The Air services (FOTA/SOTA) to their customers wherever they are. This will include information updates such as map information including points of interest (POI), real-time traffic, weather, and early warning parking availability, infotainment, etc

• Media and entertainment industry can provide entertainment services in vehicles

• Broadcast/Multicast service directly to User Equipment whether handheld or vehicle mounted

TS 22.261TR 22.862TR 22.864




45

5G service enabler

5G Usecase


References

eMBB

Wide area public safety

• Emergency responders can exchange messaging and voice services in outdoor conditions anywhere they are and achieve continuity of service whatever mobility scenarios.

• Access to User Equipment (handset or vehicle mounted)

TS 22.261TR 22.862

Local area public safety

• Emergency responders can set up a tactical cell wherever they need to operate. This cell can be connected to the 5G system via satellite to exchange data, voice and video based services between the public safety users within a tactical cell or with the remote coordination centre

• Broadband connectivity between the core network and the tactical cells

TS 22.261TR 22.862




46

5G service enabler

5G Usecase


References

mMTC

Wide areaIoT service

• Global continuity of service for telematic applications based on a group of sensors/actuators (IoT devices, battery activated or not) scattered over or moving around a wide area and reporting information to or controlled by a central server- Automotive and road transport- Energy- Transport- Agriculture

• Connectivity between IoT devices (battery activated sensors/actuators or not) and spaceborne platform.

• Continuity of service across spaceborne platforms and terrestrial base stations is needed.

TS 22.261TR 22.861TR 22.862TR 22.864

Local areaIoTservices

• Group of sensors that collect local information, connect to each other and report to a central point. The central point may also command a set of actuators to take local actions such as on-off activities or far more complex actions

• The sensors/actuators served by a local area network may be located in a smart grid sub-system (Advanced Metering) or on board a moving platform (e.g. container on board a vessel, a truck or a train)

• Connectivity between mobile core network and base station serving IoTdevices in a cell or a group of cells.

TS 22.261TR 22.863

※ mMTC (massive Machine Type Communication)

q NTN channel model features per deployment scenarios

47

Deployment-D1 Deployment-D2 Deployment-D3 Deployment-D4 Deployment-D5

Platform orbit and altitude GEO at 35786 km

GEO at 35786 km

Non-GEO down to 600 km

Non-GEO down to 600 km

HAPS between 8 km and 50 km

Carrier Frequency on the link between Air / space-borne

platform and UE

Around 20 GHz for DL Around 2 GHz

for both DL and UL (S band)

Around 2 GHz for both DL and

UL (S band)

Around 20 GHz for DL

Below 6 GHzAround 30 GHz

for UL (Ka band)

Around 30 GHz for UL

(Ka band)

Maximum Channel Bandwidth (DL + UL) Up to 2 * 800 MHz Up to 2 * 20

MHz Up to 2 * 20MHz Up to 2 * 800 MHz Up to 2 * 80 MHz

Channel model calibration

37

48

Deployment-D1 Deployment-D2 Deployment-D3 Deployment-D4 Deployment-D5

UE typeHandheld, nomadic,

fixed, moving platform mounted

Handheld, moving platform mounted


Handheld, nomadic, fixed, moving platform mount

ed


Doppler cause Mainly UE mobility Mainly UE mobility

UE + satellite mobility UE + satellite mobility UE + HAPS

mobilityO2I penetration loss No No No No Possible

Atmospheric absorption Mandatory Negligible Negligible Mandatory Negligible

Rain attenuation Rain and cloud attenuation are not needed Negligible Negligible Rain and cloud attenuation ar

e not needed Negligible

Cloud attenuation Rain and cloud attenuation are not needed Negligible Negligible Rain and cloud attenuation ar

e not needed Negligible

Scintillation Tropospheric Ionospheric Ionospheric Tropospheric Negligible

Fast fading models (system level) Flat fading

Flat fading orfrequency selective

fading

Flat fading or frequency selective fading Flat fading Frequency selective

fading

O2I: Outdoor to Indoor

Channel model calibration

q NTN channel model features per deployment scenarios

38

Satellite and aerial access network architecture principles

q Possible satellite and aerial access network architectures (1/4)ØSatellite access network & without ISL & above 6 GHz

ØSatellite access network & with ISL & above 6 GHz

49ISL : Inter Satellite Link


q Possible satellite and aerial access network architectures (2/4)ØSatellite access network & below 6 GHz & with terrestrial access network

50


q Possible satellite and aerial access network architectures (3/4)ØSatellite access network & below 6 GHz & without terrestrial access network

ØAerial access network & with IAL & above 6 GHz

51IAL : Inter Aerial Link


q Possible satellite and aerial access network architectures (4/4)ØAerial access network & without IAL & below 6 GHz

ØAerial access network & with IAL & below 6 GHz

52IAL : Inter Aerial Link

Potential key impact areas on NR to support NTN (5/5)

53

q Areas of impacts on NR to support Non-Terrestrial networksNon-Terrestrial network specifics Effects Impacted NR features

Motion of the space/aerial vehicles(especially for Non GEO based access

network)

Moving cell pattern Hand-over/pagingDelay variation TA adjustment

DopplerInit synchro downlinkDMRS time density

Altitude Long latency

HARQMAC/RLC Procedures

Physical layer Procedures(ACM, power control)

Cell size Differential delayTA in Random access response message

RACH

Propagation channel ImpairmentsDMRS frequency density

Cyclic prefixDuplex mode Regulatory constraints Access scheme (TDD/FDD)

Satellite or aerial Payload performancePhase noise impairment PT-RS

Back-off PAPRNetwork architecture RAN Mapping Protocols

위성정보 융합 서비스 ICT 인력 양성 연구센터

위성정보 처리 및 융합 서비스 기술 개발

총괄책임자 : 아주대학교 전자공학과 김재현

Contents

58




04. Conclusions

Conclusions

q 5G starts deployment Ø 5G Convergence Services

ü Smart City, Smart Factory, Transport Convergence, AR/VR, etc.

q Smart City ØWorldwide New business Chance Ø 5G Smart City vs. Legacy Smart City? ØBiz model ? (For whom, By who)ØNeeds mighty governance to multi-ministries

q Satellite of Future Ø Small Satellite Market has is been growing dramatically in last 2 years.ØNew Biz model

q6G = 5G + AI + SAT59

Thank you !

Q & A60

5g/6g 기술및서비스동향 : 스마트시티, 위성기술 -...

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