5G: FROMMYTH TO REALITY

APRIL 21, 2016 - ETSI, SOPHIA ANTIPOLIS

Mobile Communications SystemsMobile Communications Systems

5G Requirements

System Level Evaluation

Dissemination

Structuring the manifoldness of 5G via 5 „core services“ and KPI map

Technical approach I – structuring the project activities via service integration drivers (SIDs)

Technical approach – Basic multiplexing and scheduling of users

Technical approach – MBB technology enablers

Technical approach – MMC technology enablers

Technical approach – MCC technology enablers

Performance evaluation through system level simulations

Technical Approach

Start service-specific, analyse synergies/conflicts, harmonize, merge and integrate!

Observation: A frame structure with dynamic adjustment of TTI size per user!

Technical approach II – Service specific resource configurations

• MMC: moderate bandwidth with longer TTIs optimized for low cost and better coverage

• MCC: higher bandwidth with shorter TTIs optimized for low latencies with reasonable overheads

• MBB: short TTIs to quickly start TCP session followed by medium ize TTI for mimized overhead

• BMS: long TTIs to maximize FEC gains from time-diversity

Fantastic-5G Use Cases Positioning to ITU, 3GPP and NGM Service Use case Primary

Challenge MBB UC1: 50 Mbps everywhere Coverage

MBB + V2X

UC2: High speed train High speed

MMC UC3: Sensor networks Massive access

MCC UC4: Tactile Internet Ultra-low latency

MCC + V2X

UC5: Automatic traffic control / driving

Ultra-high reliability

BMS UC6: Broadcast like services: Local, Regional, National

Broadcast services

MBB UC7: Dense urban society below 6GHz

Capacity

Core Services and KPIs

KPI 1 KPI 2 KPI 3 KPI 4 KPI 5 KPI 6 KPI 7 KPI 8Data

throughput per area

Latency Coverage MobilityNumber of connected

devices

Reliability, availability Low cost

Low energy

MBB

MCC

MMC

BMS

V2X

Primary Secondary Tertiary

Mobile Broadband (MBB) Massive Machine Communications (MMC) Mission Critical Communications (MCC)

Broadcast/Multicast Services (BMS) Vehicle-to-vehicle and vehicle-to-infrastructure communications (V2X)

FANTASTIC-5G will avoid a one-fits-all solution for the New Air Interface!

A divergence is coming: 2 asymptotes

Where does 4G stumble? = 6 requirement drivers for 5G

Mission & Partners Mission: The Mission of FANTASTIC-5G is to develop a flexible and scalable multi-service air interface with ubiquitous coverage and high capacity where and when needed. The air interface shall be highly efficient in terms of energy and resource consumption, shall be future proof and shall allow for sustainable delivery of wireless services far beyond 2020. To evaluate and validate the developed concepts and build up consensus on reasonable options for the standardization of 5G Funding volume: ~8 million Euro Start: July 1. 2015 Duration: 2 years . Technical Approach

Technical Approach

FANTASTIC-5G Flexible Air iNTerfAce for Scalable service delivery wiThin wIreless Communication networks of the 5th

Generation

5G needs to enable …

MCC

MB

B u

ser 1

st

artu

p MMC

time

frequ

ency

One tile corresponds to the smallest user allocation

In-resource Control Channel (CCH) with downlink scheduling grant. Downlink data payload

CCH content summary: - UE identifier - PHY configuration for data payload. - HARQ information - MIMO information

(a) Time-frequency multiplexing of users (b) In-resource control signaling t

f

MMC

BMS

MBB user 3 data

MBB user 4 data

MB

B u

ser 2

st

artu

p

Small Cell: - Efficient small cell operation - Dynamic TDD operation - Optimized PHY numerology and waveform design

Spectrum: - Support for FDD and TDD - Efficient aggregation of fragmented spectrum

Frame Structure - Flexible frame structure - Shorter, and variable size TTIs - Flexible control channel design - Energy and complexity optimized

Multinode operation - Efficient multi-node connectivity - Aggregation between layers - Aggregation between FDD and TDD

Enhanced MIMO - mMIMO with enhanced MU-MIMO

Interference handling - Network-based ICIC - Advanced interference-aware receivers

UE

eNodeB

subframe index (exemplary) i i+4 i+8 i+12

Info regarding resource assignment ACK

Data Service request

UE

eNodeB

subframe index (exemplary) i i+4

• Additional delay

• Depending on configuration certain amount of DL feedback required

• Reduced collision probability through service request over-provisioning increases throughput

• Envisaged solution for bigger packets and higher traffic load

ACK

Data

Down to 1 bit per UE

SRs >>PRACH preambles

Preamble

(a) One-shot transmission (b) Two-stage protocol

• Faster, if successful, significantly less DL feedback

• High collision probability reduces throughput, coded random access for scalability

• Envisaged solution for very small packets and low traffic load

• Sparse signal processing detectors

time fr

eque

ncy

1-way low-latency transmission

• Example: broadcast for V2V communication

• Achieved by TDD and using a communication resource of short duration

downlink uplink MCC

2-way low-latency transmission

• Example: Acknowledged data transmission, the reception of ACK is included in the latency calculation

• Achieving it with TDD may not be possible, needs to use FDD or full duplex

• … an increase in available capacity • 1000x higher mobile data volumes, 10-100x higher end user rates

• … an increase in number of connected devices • By a factor of 10-100 up to 300000 devices per access point

• … an increase in offered reliability • 99.9999% for e.g. mission critical communications, control functionalities

• … a decrease of Latency • reduction of up to a factor of 5

• … an increase in efficiency • resource utilization (e.g. energy and spectrum)

BROADBAND Massive traffic capacity Reduce Cost Spectrum efficiency Access new spectrum

EXTREME DENSITY Massive user density User content

MISSION CRITICAL Very low latency

High reliability High availability

Security

INNOVATIVE SERVICES Flexible bearer design 3rd party policy

BATTERY LIFE Signaling reduction

Energy optimization

NON TRADITIONAL DEVICES Short packet

Sporadic access More devices and more device types

5G

# of subscribers (= human or machine)

amou

nt o

f tr

affi

c/su

b/m

onth

2G

Mobile voice, traffic scaling proportional to number of subs. 3G

Start of mobile broadband. Usage per subscriber increasing.

4G

Mobile entertainment, total traffic driven by average data usage instead of by number of subscribers.

5G

At the same time as ultra-broadband continues to grow, the rise of M2M traffic and number of subscribers causes diverging requirements, both technical and economical.

Simulation capabilities

• Implement the most important features of both LTE and LTE-A technologies • Customizable network topologies, channel and propagation models (radio conditions), traffic

models, mobility models

• Is being extended for modelling 5G core services

• Preliminary versions of the simulation environment are under development

• Compliant with 3GPP LTE Rel.10+

• Politechnico di Bari LTE simulator: http://telematics.poliba.it/lte-sim

Main innovations

• Multi-service support and flexible network deployments with a user-friendly GUI

Visualization of user’s density Visualization of QoS

Red points denote higher user density around small cells

Green points denote good QoS, while yellow

denote medium QoS

• FANTASTIC-5G VTC Spring 2016 New Air Interfaces Workshop in Nanjing/China, May 15-18 2016

• ICC 2016 Joint RAN Workshop Kuala Kumpur/Malaysia, May 23-27 2016

• EuCNC 2016 5GPPP Workshop on 5G Physical Layer Design and Hardware Aspects Below and Above 6 GHz together with Flex5Gware, mmMAGIC, Athens/Greece, June 27-30

• GLOBECOM 2016 Joint RAN Workshop Washington/USA, December 4-8 2016

Web: www.fantastic5g.eu

www.fantastic5g.eu

Twitter: @fantastic5g

Upcoming events:

LinkedIn Group: Fantastic-5G