Tech-talk

Roundtable technology November 8 2016Anders Fagerholt

Ericsson Internal | 2016-11-02 | Page 2

› USA› EU› China

Status on V2X on 5.9 GHz

Ericsson Internal | 2016-11-02 | Page 3

US

› Will US DoT fulfil its ambition with the NHTSA Notice of Proposed Rulemaking (NPRM) during 2016?

› Only a few weeks left for Mr. Foxx and the present administration?› Will it mandate only V2V from model year 2020? Nothing on the road-side?› Will GM launch Cadillac CTS with DSRC 2017?› US focus on crash avoidance use cases

› Interesting times!

Ericsson Internal | 2016-11-02 | Page 4

› No mandate on ITS G5 from EU. Instead we expect “Delegated Acts” on applicable standards and interoperability testing.

› C-ITS platform concluded that C-ITS must be a hybrid system of short and long range communication (ITS G5 and 3GPP).

› EU focus on “warning to the driver” and V2X use cases

› C-ITS and Automation is now “connected” as well a automotive and telecom

EU

Ericsson Internal | 2016-11-02 | Page 5

› China and other stakeholders drive V2X with LTE direct communication– First 3GPP standard ready– Chinese standardization and field trials in preparation

› Claiming better performance than DSRC/ITS G5 – 2 x the range, better interference control and a road map to 5G– I2V and V2I wide area coverage

› Still issues to work on….

China and other initiatives

Ericsson Internal | 2016-11-02 | Page 6

› With or without network coverage› Discovery functions› LTE spectrum› V2V spectrum› Resource allocation from the network› Requirements and higher level

protocols copied from ETSI C-ITS

LTE-V

V2Vsidelink(PC5)

Uplink /downlink

(Uu)

More reading: http://www.5gamericas.org/files/2914/7769/1296/5GA_V2X_Report_FINAL_for_upload.pdf

What is 5G?

Ericsson Internal | 2016-11-02 | Page 8

5G and previous generations

2000 2010 20201990

3G

4G

Wi-Fi

2G5G =

evolution of existing standards

+NR

…

NR

5G

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5G Radio Access

NRNo backward compatibility constraints

“Existing” spectrum

Below 6 GHz

Tight interworking

“New” spectrum

New additional spectrum

LTE Evolution

1 GHz 3 GHz 10 GHz 30 GHz 100 GHz 1 GHz 3 GHz 10 GHz 30 GHz 100 GHz

Gradual migration

5G radio access

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Ericsson Internal | 2016-11-02 | Page 10

LTE in time and frequencyLink adaptation› Select modulation and coding rate

on instantaneous channel quality

data1data2data3data4

User #1 scheduledUser #2 scheduled

Time-frequency fading, user #1

Time-frequency fading, user #2

User scheduling› in time and frequency domain

Algorithms based on channel estimateTime or position

Ericsson Internal | 2016-11-02 | Page 11

High FrequencyLow frequency

Physical Layer design

N · 15 kHz

Target wide frequency range Several numerologies

15 kHz

Increased Bandwidth

subcarrier spacing

Shorter OFDM symbols

Shorter cyclic prefix

Reduced sub-frames

CP CP CP CP

66.6766.67

1, 2, 4 and possibly8

Ericsson Internal | 2016-11-02 | Page 12

”Empty” LTE Release-8 sub-frame

NR design principle:Minimize always on signals!

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< 6GHz• Coverage provisioning • MBB baseline and growth opportunity

6-30GHz• Good tradeoff between coverage and antenna

sizes for massive beamforming• Reuse macro sites to provide area coverage

(including outdoor-in)

>30GHz• Very wide bandwidths• Short range hotspots providing peak rates

Spectrum ranges

Coverage

Extreme capacityand data rates

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Ericsson Internal | 2016-11-02 | Page 14

NR – Key technology featuresmany also apply to LTE evolution

Access/backhaulintegration

Integrated D2Dconnectivity

Massivebeam-forming

System controlFlexible and scalable

system plane

Ultra-lean design

User data

Flexible, scalable and future-proof design

Deployment

Multi-site coordination/connectivity

Flexible PHY

Use cases

Spectrum Energy efficient: minimize network transmissions not directly related to user data delivery

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Ericsson Internal | 2016-11-02 | Page 15

When will 5G happen?

2015 2016 2017 2018 2019 2020 2021 2022 2023

Rel-14 Rel-15 Rel-16 Rel-17

ProposalsRequirements SpecsWRC-15 WRC-19

Multi-city roll-out

Ericsson Internal | 2016-11-02 | Page 16

› Wide set of new requirements for 5G

› 5G radio access = LTE evo + NR

› Cloud for network and services

› Migration from LTE possible

Summary

Existing spectrum

Below 6 GHz

Tight interworking

New spectrum

Above 6 GHzNew spectrum below 6 GHz

LTE Evolution

1 GHz 3 GHz 10 GHz 30 GHz 100 GHz 1 GHz 3 GHz 10 GHz 30 GHz 100 GHz

Gradual migration

“NR”

5G wireless access

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