5th generation wireless technologies - tu wien · 5th generation wireless technologies 389.193 –...

institute of

telecommunications

5th Generation Wireless Technologies389.193 – Summer Term

Stefan Schwarz

[email protected] 6, 2016

Stefan Schwarz

• M.Sc. degreeImpact of Waveguide Input Coupling on Vertical Cavity Surface Emitting Laser DiodesSupervisor: Prof. Walter Leeb, Co-Advisor: Dr. Gerhard SchmidInstitute of Telecommunications (ITC), TU Wien, 2009Programmer: The Vienna LTE Simulators (Mobile Communications Research Group)

• Ph.D. degreeLimited Feedback Transceiver Design For Downlink MIMO OFDM Cellular NetworksSupervisor: Prof. Markus Rupp, Co-Advisor: Prof. Robert Heath, UT AustinITC, TU Wien, 2013Lead Developer: The Vienna LTE-A Simulators (Mobile Communications Research Group)

• Postdoctoral researcherHead of CD-lab Dependable Wireless Connectivity for the Society in MotionITC, TU Wien, 2016

Slide 2 / 23

Contents

Course Organization

Course Outline

Course Motivation

Slide 3 / 23 Contents

Course Organization

• VO 389.193: 5th Generation Wireless Technologies

• Schedule− Monday 15:30 - 17:00, CG0402

− 12-13 lectures

− ECTS: 3.0 (weekly hours 2.0)

• Course material− Lecture slides available at (Password: 389193)

https://www.nt.tuwien.ac.at/teaching/summer-term/389-193

− Additional references provided within the slides

• Exam− Oral, appointment by email to Prof. Rupp ([email protected])

Slide 4 / 23 Course Organization

https://www.nt.tuwien.ac.at/teaching/summer-term/389-193

Course Overview

Aim of the course

...learn about fourth generation (4G) wireless communications(LTE/LTE-A) and obtain a basic understanding of the technolo-gies that will shape fifth generation (5G) mobile networks.

• Focus is on the physical layer (PHY) and medium access control layer (MAC)of 3GPP long-term evolution (LTE) [3GPP, 2010, 3GPP, 2014]

• The core network is out of scope

Slide 5 / 23 Course Organization

Course Outline

Basics of 3GPP LTE/LTE-A

Single and Multi-User MIMO Transmission

The MIMO Interference Channel

Major Trends for 5th Generation Cellular Networks

Slide 6 / 23 Course Outline

Course Outline ctd.

Basics of 3GPP LTE/LTE-A

• LTE PHY transmit signal processing chain− Adaptive modulation and coding (AMC)

− Orthogonal frequency division multiplexing (OFDM) and single-carrier frequency divisionmultiplexing (SC-FDM)

− Multiple-access and frame structure in up- and downlink

− Multiple-input multiple-output processing capabilities

• Signal processing at the receiver

• Enhancements introduced with LTE-A


Course Outline ctd.

Single and Multi-User MIMO Transmission

• Single-user multiple-input multiple-output (MIMO) basics− Review of MIMO capacity

− Space and space-time/frequency precoding schemes

• Multi-user MIMO basics− MIMO multiple access channel (MC) and broadcast channel (BC)

− Multi-user MIMO transceiver architectures

• MIMO transmission with imperfect CSIT− CSI feedback strategies

− Performance limits with imperfect CSIT

− Multi-user MIMO with rate splitting


Course Outline ctd.

The MIMO Interference Channel

• Multiple-input single-output interference channel− Performance limits of the MISO IC and degrees of freedom (DoF)

− Transceiver architectures

• Multiple-input multiple-output interference channel− Interference alignment

− Coordinated multipoint transmission in LTE


Course Outline ctd.

Major Trends for 5th Generation Cellular Networks

• Enhanced multicarrier transmission schemes− Filtered OFDM

− Filterbank multicarrier modulation

− Generalized frequency division multiplexing

• Full dimension MIMO (FD-MIMO) and massive MIMO− Massive MIMO principles and theory

− FD-MIMO in LTE

• Further trends (millimeter waves, full duplex, machine-type communication)


Contents

Course Organization

Course Outline

Course Motivation

Slide 11 / 23 Course Motivation

History of UMTS/LTE

1G (analog)

A, B, C Netz

GSM

GPRS

EDGE

1991 1997 1998

Creation of the 3GPP

UMTS

HSPA

HSPA+

2G 3G

1999

LTE

LTE advanced

2009 20102004 2007

4G

5G

(ETSI)

• First generation (1G) cellular networks: analog telephony

• Second generation (2G) era: digital networks− GSM: circuit-switched, TDMA, FDD

− GPRS: packet-switched data traffic

− EDGE: max. 472 kbit/s through higher order modulation (8 PSK instead of GMSK)

− 200 kHz bandwidth

• Standardized by the ETSI


History of UMTS/LTE (II)

1G (analog)

A, B, C Netz

GSM

GPRS

EDGE

1991 1997 1998


UMTS

HSPA

HSPA+

2G 3G

1999

LTE

LTE advanced

2009 20102004 2007

4G

5G

(ETSI)

• Worldwide standardization: 3GPP

• UMTS: release 99− WCDMA, first release: 384 kbit/s

− 5 MHz bandwidth

• HSPA and HSPA+ (release 5 and 7)− Up to 4× 4 MIMO, up to 20 MHz (carrier aggregation)

− AMC⇒ 330 Mbit/s (release 11)


History of UMTS/LTE (III)

1G (analog)

A, B, C Netz

GSM

GPRS

EDGE

1991 1997 1998


UMTS

HSPA

HSPA+

2G 3G

1999

LTE

LTE advanced

2009 20102004 2007

4G

5G

(ETSI)

• UMTS LTE release 8 (3.5G)− OFDM, up to 4× 4 MIMO

− Up to 20 MHz, first release: 300 Mbit/s

• LTE advanced release 10 (4G)− Up to 8× 8 MIMO

− Up to 100 MHz⇒ > 1 Gbit/s


Technology Utilization

201820172016201520142013201220112010

10

9

8

7

6

5

4

3

2

1

0

YearB

illio

n su

bcri

bers

Worldwide subcriptions (Source: Ericsson, June 2013)

LTEWCDMA/HSPAGSM/EDGECDMAothers

• GSM still dominates the market

• HSPA will likely become dominant in 2017

• LTE is gaining momentum


Main Motivation for 4G LTE/LTE-A

201820172016201520142013201220112010

15

12

9

6

3

0

YearG

loba

l tra

ffic

[Exa

byte

s/m

onth

]

Global traffic voice and data (Source: Ericsson, June 2013)

Data: mobile PCs, tablets, mobile routersData: smartphonesVoice

Estimated growth of mobile traffic (1 Exabyte = 1018 bytes)

• Mobile data traffic in 2012 was twelve times the size of the Internet in 2000

• Smart phones represented only 18 percent of total global handsets in use in2012, but represented 92 percent of total global handset traffic

[Cisco Systems Inc., 2013, Ericsson, 2013]Slide 16 / 23 Course Motivation

5G – Why Yet Another Generation?• Development from 2G to 3G/4G was driven by the mobile phone

− Transition from telephony to data services

− Improvements in capacity, data rate, latency

• Prime goal of 5G: One network — many business cases

Enhanced MobileBroadband

Media & Entertainment

CriticalCommunications

eHealth, Energy

Massive MachineType Communications

Sensors, Location-awareness

Enterprise andIndustry

Industry 4.0, Network slicing

VehicularCommunications

Automotive





• Prime goal of 5G: One network — many business casesEnhanced Mobile

BroadbandMedia & Entertainment


eHealth, Energy






Automotive





• Prime goal of 5G: One network — many business cases


eHealth, Energy






Automotive

Enhanced MobileBroadband

Media & Entertainment












Automotive


eHealth, Energy








eHealth, Energy




Automotive










eHealth, Energy






Automotive


5G – Why Yet Another Generation? (II)

Internet of Things (IoT)

• Interconnection of every-day devices(wearables, smart appliances/homes/. . . )

• Telepresence and -operation(physical-world web, tactile Internet)

• Autonomous information exchange⇒ Massive machine type communication (MTC)

1 Billion Connected Locati

ons

in 2

000

5 Billion Connected People in 2010

50 Billion Connected Devices by 2025


5G – Multidimensional Objectives

Peak data rate

User exp. data rate

Spectrume�ciency

Area tra�ccapacity

Connectiondensity

Energye�ciency

Mobility

Latency

Reliability

Enhanced Mobile Broadband

Vehicular Comm

unications

Machine Type Communications

• Different applications map to different requirements

• Virtual network slicing to support individual key performance indicators


5G Trend – Connected Vehicles

assisted driving

enhanced e�ciency and safetygrowing number of sensors

increasing information exchange

automated drivinghuman driving

DSRC/V2V

assisted V2V

sensing

V2P

V2I

high mobilitylow latencyhigh capacity

• Automated driving: advantages of information exchange− Expansion of sensing range (blind-spots, blockages)

− Higher level of traffic coordination (platooning, intersection scheduling)

− Better informed decisions in safety-relevant situations

• Yet, necessary dependence on communication must be avoided⇒ Details in lecture 389.177 Advanced Wireless Communications 3


3GPP Roadmap towards 5G

LTE 3.5G

R8

LTE-A 4G

R10

2008 2011

R11

2013 2015

R12

2016

R13

CA - 5CC (100MHz)MIMO 8 streams20MHz

MIMO 4 streams

CoMP

FDD/TDD CAD2DDual connectivity

CA - 32CC (640MHz)FD-MIMONarrowband IoTLTE-U

3G Era 4G Development 4G Era 5G Development

2017

R14

2018

R15 R16

2020

IMT 2020

5G Era

5GLTE-A Pro


3GPP Roadmap towards 5G

LTE + 5G Plug-Ins 5G New Radio NR

5GMaintain backwards compatibilityExisting spectrum below 3.5GHz

„Unrestricted“ play-ground (Non)-standalone

New spectrum below and above 3.5GHz

Interworking

1GHz 3GHz 10GHz 30GHz 100GHz

R14: latency - shorter TTI, instant UL LTE-U improvements FD-MIMO enhancements MTC, V2X

Channel modeling for >6GHzHot-spot capacity boostUltra-lean designMulti-site beamformingFlexible multicarrier


institute of

telecommunications

5th Generation Wireless Technologies389.193 – Summer Term

Stefan Schwarz

[email protected] 6, 2016

Abbreviations I

3GPP third generation partnership project

AMC adaptive modulation and coding

BC broadcast channel

CLSM closed loop spatial multiplexing

CoMP coordinated multipoint transmission

CSI channel state information

DoF degrees of freedom

DSRC dedicated short range communication

EDGE enhanced data rates for GSM evolution

ETSI European telecommunications standard institute

FBMC filter bank multicarrier modulation

FDD frequency division duplex

FD-MIMO full dimension MIMO

GMSK Gaussian minimum shift keying

GPRS general packet radio service

GSM global system for mobile communications

HetNets heterogeneous networks

Slide 1 / 3 Abbreviations

Abbreviations IIHSPA high speed packet access

IA interference alignmentIC interference channel

LTE long-term evolutionMAC medium access control layer

MC multiple access channelMIMO multiple-input multiple-output

mmWave millimeter waveOFDM orthogonal frequency division multiplexingOLSM open loop spatial multiplexing

PHY physical layerPSK phase shift keying

SC-FDM single-carrier frequency division multiplexingTDMA time division multiple access

TxD transmit diversityUMTS universal mobile telecommunications system

V2I vehicle to infrastructureV2P vehicle to pedestrianV2V vehicle to vehicle

WCDMA wideband code division multiple access

Slide 2 / 3 Abbreviations

References I

3GPP (2010).Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures(Release 10).[Online]. Available: http://www.3gpp.org/ftp/Specs/html-info/36213.htm.

3GPP (2014).Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels andModulation (Release 12).[Online]. Available: http://www.3gpp.org/ftp/Specs/html-info/36211.htm.

Cisco Systems Inc. (2013).Cisco visual networking index: forecast update, 2012-2017.white paper.

Ericsson (2013).Ericsson mobility report.white paper.

Slide 3 / 3 References

5th generation wireless technologies - tu wien · 5th generation wireless technologies 389.193 –...

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