30 november 2019site.ieee.org/.../12/5g-voice-meetathakur_ericsson-rd.pdf · 2019-12-11 · —...

5G Voice 2019-11-26

© Ericsson AB 2018 1

5G Voice

30 November 2019

Meeta Thakur

Principal Engineer

Ericsson R&D

Meeta Thakur | 2019-11-26 | 5G Voice | Page 2

5G 2G/3G

New revenues

Different Economics

Continued demand for operator voice

Smartphone Revolution

Voice Service Evolution Multi-Device

Multi-Persona

Work

Community

Private

Group Number

Adam

Bert

Charlie

Automotive Industry

New Distribution Channels

Building Construction

Industry

Intercom

AR / VR

Mission Critical

Comm.

Voice User Interface (VUI) New Use-Cases

Industry & Medical

Haptic Comm.

BOTS

eCall

Elevator alarm/voice button

Emergency/service call button

5G Voice 2019-11-26



Introduction

— 5G is driven by the ever increasing need for higher data speeds and new services

— But voice also important for

1) High 5G data speeds in smartphones

2) Support for new 5G specific use cases

3) CS legacy phase out

— IMS continues as the voice service engine

— Full VoLTE service set also in 5G

— 5G voice introduction starts with VoLTE

— 5G coverage initially with high frequencies only

— VoLTE needed as fallback


— Most initial 5G deployments are using medium

to high frequency bands

— New bands for higher data speeds

— Challenges with voice on high frequencies

— High free-space propagation loss

— High diffraction loss

— High wall penetration loss

— Solutions to overcome 5G coverage issues

— Dual connectivity with a lower 4G band

— Fallback or handover to a lower 4G band

— Carrier aggregation with a lower 5G band

Voice on high frequencies

x

x

x

x

x

x

x

x

x

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

xxxxx

5G Voice 2019-11-26



5G voice evolution steps

1. Dual Connectivity (EN-DC) April 2019 VoCS

LTE to CS HOVoLTE

NR NR NR

Dual Connectivity

2. EPS Fallback Q2 2020

VoCS

LTE to CS HOVoLTE

NREPS Fallback

3. Voice over NR Q3 2020

VoCS

VoLTE

VoNR

LTE to CS HO

NR to LTE HO

VoNRLTE to NR HO

Voice in 5G System (5GS)


Voice in 5G System (5GS)

Voice Solutions

1. Dual Connectivity (EN-DC) 2. EPS Fallback 3. Voice over NR

• LTE for voice while using NR as a

data boost

• Data over NR may optionally be

stopped during calls in order to ensure

enough uplink power for voice over

LTE on cell edges

3GPP Opt.3 3GPP Opt.2 3GPP Opt.2

• NR for data but falling back to LTE

(for voice and data) when making

or receiving calls

• Data over NR may optionally be re-

established after EPS-FB (with EN-

DC)

• EPC and 5GC with N26 interworking

and IP address preservation in 5GC

Data

Voice

Data

S G

IMS

B LTE

S G

EPC

B NR

Data

B NR

S G

IMS

S G

5GC

Voice

• NR for both voice and data

• NR dimensioned for voice coverage

• Seamless handover between 5G and

4G (and WiFi)

- No handover/fallback from 5G to

CS

B LTE

S G

MME

SGW

S G

IMS

S G

5GC

B NR

Legend

Legacy VoLTE/LTE

Impact from 5G voice

N26 (S10) IRAT HO

Voice

Data

B LTE

S G

MME

SGW

N26 (S10)

EPS-FB

April 2019 Q2 2020 Q3 2020

5G Voice 2019-11-26



Voice solution versus 5G build out

2. Local

continuous NR

coverage

NR

NR

NR

NR

NR

NR

NR

NR NR

NR

NR NR

NR NR

NR NR NR

NR

NR NR

NR

NR NR

NR NR

NR NR

NR NR

NR

NR NR

Voice over NR with IRAT

handover to/from VoLTE

Voice over NR

LTE

LTE

LTE

LTE

LTE NR NR NR

NR NR

NR NR

NR NR

NR NR

NR NR

NR NR

NR NR

NR NR

NR

1. Local spotty

NR coverage

Dual Connectivity

or

EPS Fallback

LTE

LTE

LTE

LTE

LTE

NR

NR NR

NR

NR NR

NR NR

3. Full national

NR

coverage


2020 2021 2019 2018 2022 2023

Spectrum allocation over time

4G

5G

3G

2G New 5G spectrum for

increased data capacity

First 5G voice deployments (EN-

DC) on 3.5 GHz (5G) and 2.6 GHz

(4G) 5G

Low bands (sub 1 GHz)

High bands (up to 40 GHz)

Mid bands I (1 GHz - 2.6 GHz)

Mid bands II (3.5 GHz - 6 GHz)

New 5G low band spectrum

for improved IoT & voice

coverage

2G/3G spectrum migrated to

5G as licenses expires etc

t (Yr)

f (Hz)

5G

5G

More spectrum combinations

supported by RAN and

devices, first deployments for

EPS FB and later on VoNR

5G Voice 2019-11-26



Mobility and call continuity use cases 1(3) Dual Connectivity (EN-DC)

EN-DC with VoLTE

SRVCC

EN-DC with CS Fallback

CSFB


Mobility and call continuity use cases 2(3) EPS Fallback

Fallback with consecutive handover

EPS-FB

SRVCC

B

B

5G

4G

2G/3G

EPS-FB

B

4G

5G

Dynamic spectrum sharing

Fallback between shared 5G-4G carrier with

consecutive handover

5G

SRVCC

5G Voice 2019-11-26



Mobility and call continuity use cases 3(3) Voice over NR

Consecutive handover case Indoor coverage case Low spectrum handover case

5G-4G HO

SRVCC

4G-5G HO 5G high/mid band to

5G low band HO


Real-Time Gaming - While calling

- In-game calling with QoS Augmented Reality

Spatial Audio

New and enhanced multi-media communication opportunities with 5G

Bandwidth

(Gbps)

1 / Latency

(ms)

360/Spherical Calling

Video Comm. Capacity

Hologram Comm.

Virtual Reality

Mission Critical Comm. Voice Steering (VUI)

Voice Steering (VUI) Enhanced

Interactive Control & Supervision - Drone control, autonomous driving

- Industrial/medical remote applications

- Haptic (touch) communication

Voice Translation

HD Voice

HD+ Voice

SMS

MMS

Video Comm.

5G

4G

5G 4G

5G Voice 2019-11-26



IMS data channel 1(2) 5G real-time interaction

QoS

5G Core & IMS

Human QoS

Machine

Voice – 5QI-1

Video – 5QI-2

IMS Data Channel (new) – 5QI-x (higher priority than 5QI-9/Internet)

4G real-time communication 1) Hear/Talk

2) Read/Write

3) See

5G real-time interaction 1) Hear/Talk

2) Read/Write

3) See

4) Touch/Feel

5) Move/Control


IMS data channel 2(3) New real-time interacting services

Low Latency

High Throughput

Mobility

HD Audio/Video

Binary data (New in 5G)

Global find & connect

End-to-end encryption

Authentication

Device Onboarding

Session Management

Quality of Service

Session Robustness

NR

& 5

G C

ore

IM

S

Remote haptic control VR with collaboration Machine control Remote Health

AR with control Drone Steering Remote Surgery Remote support

https://vimeo.com/333523585

5G Voice 2019-11-26



IMS data channel 3(3) Extend telephony with real-time interactivity in 5G

IMS Data

Channel

Browsified Native

Phone Dialer

+

Extend telephony with:

In-call screen sharing

In-call photo album sharing

In-call co-browsing

In-call co-editing

In-call document signing

In-call gaming

In-call AR/VR

In-call custom menus & UI

Any other web feature

More interesting and fun

consumer telephony with

media, gaming, AR, etc.

More meaningful

business telephony for

customer support,

collaboration, etc.


R2D2 sending a hologram message from

princess Lea in the 1977 movie Star Wars

Hologram communication From science fiction to reality in 5G networks

Youtube: Star Wars

https://www.youtube.com/watch?v=8N_Cj3ZS9-A

5G Voice 2019-11-26



End-user values

Faster data speeds in

smartphones — 3-4 times faster than 4G

— Better quality in streaming videos etc

— Shorter delays for on-line gaming

Improved speech quality — EVS mandatory for all voice capable 5G devices

— High capacity in radio network allowing use of wider codecs

Improved security and integrity — 5G security also for voice and smartphone apps etc.

— Improved privacy protection, more difficult to attack,

trace, and move users to older (more vulnerable)

G’s

New services — Interacting with industrial, medical and entertainment

applications

— Talking and watching during haptic (touch)

communication sessions

— Futuristic services such as spatial codecs and

hologram communication

5G Improved video calling quality — Clearer picture and better lip synch

Reduced latency for on-line

gaming — Maintained gaming performance also when

answering calls


Operator values

Increased data revenues — Coverage boosted by migration of lower 2G/3G

spectrum to 5G

— 30% mobile traffic growth until 2024 of which 35%

from 5G smartphones

Reduced TCO — Substantial cost reduction from running fewer network

generations in parallel

— Shut down of either 2G or 3G near term

— Maintain only minimum capacity for roaming and

IoT until complete 2G/3G phase out is completed

New revenues from 5G specific

services — Real-time interactive services through IMS data

channel

— Industrial and medical applications, haptic (touch)

communication, drone control etc.

— Spatial audio codecs

Increased ARPU — Increasing part of early adopters and high spenders

— Who’s the better customer? Needs a new phone and:

a) Doesn’t care which generation it supports, or

b) Really wants the latest generation

Revenue growth from increased usage — Better capacity and performance for:

— Video calling, augmented reality, mission critical

communication, real-time translation etc.

— Improved and generalized authentication for secure

communication with non-SIM devices

Reduced risks and vulnerability — Stronger security reducing risks for fraud, cyber

attacks, penalties and bad publicity etc.

— Network slicing reducing risk for disturbances

between different customer segments

5G Voice 2019-11-26



35% of mobile data traffic generated by 5G smartphones by 2024

35%

5G

Ericsson Mobility Report, November 2019

https://www.ericsson.com/digital-services

30 november 2019site.ieee.org/.../12/5g-voice-meetathakur_ericsson-rd.pdf · 2019-12-11 · —...

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