LTE Broadcast - vde- · PDF file1 © Nokia 2017 LTE Broadcast Rundfunk über LTE...

1 © Nokia 2017

LTE BroadcastRundfunk über LTE Mobilfunk

Ulrich Rehfuess, Head of Spectrum Policy

27. April 2017

28/04/20172

TV of the future: the smart phone at the heart of it?

TV receiver, mobile and fixed mini TV set

Settop Box

(Empfänger) für

großen Bildeschirm

Intelligent remote

control

TV integreated

with internet

access and social

3 © Nokia 2017 ulrich.rehfuess@nokia.com

Converge happens – e.g. waipu.tv

https://www.waipu.tv/

TV reception today (usage % in German households)

Satellite TV

(~45%)

cable TV

(~45%)

Internet TV

Terrestrial TV (DVB-T/DVB-T2) via antenna

(~5% primary / ~10% total)

Impact of

massive linear

video use

in unicast

Mobile radio without broadcast mode

Mobile radio with broadcast mode – eMBMS / LTE broadcast

Resources for

unicast FF

broadcast

Telstra to launch LTE-Broadcast large scale 2H2017

https://exchange.telstra.com.au/mwc17-lte-broadcast-coming-to-a-device-near-you

9 © Nokia 2017

What is eMBMS?

Evolved Multimedia Broadcast Multicast Service (eMBMS) solution architectureeMBMS components

Content Provider

BMSCMBMS GW

SGi-mb

Chips and Terminals available but playout, rendering program guide, etc. need to be made available.

• MBMS packet delivery to eNBs

• MBMS Session Control towards E-UTRAN

• MBMS admission control

• MBMS radio resource allocation

New Entity

eMBMS User Traffic

eMBMS Signalling

• MBMS user service provisioning and delivery

• MBMS Bearer Service authorization and initiation

• MBMS transmission scheduling and delivery

• Entry point for content providers’ transmissions

MCE: Multi-Cell/Multicast Coordination Entity, BMSC: Broadcast Multicast Service Center

Growing interest in Media mobile distributionEvidence in recent Fora and Standards activity

> EBU: CTN-Mobile

> LTE-Broadcast Alliance

> GSMA: Network 2020

Standards

> 3GPP SA: LTE based TV service

> 3GPP RAN: eMBMS enhancements

> ETSI: Mobile Broadcast Convergence

> SARFT: LTE-based broadcast in China

5G-PPP

> White paper on “5G and Media and Entertainment”

12 © Nokia 2017

eMBMS use cases

eMBMS for enhanced stadium experience – content delivery in live eventsFor content generation: mobile edge video orchestration

http://www.starhub.com/about-us/newsroom/2014/october/starhub-and-nokia-networks-at-the-edge-of-mobile-content-deliver.html

eMBMS for group communications e.g. in Public Safety networksLTE is the technology of choice for broadband PPDR networks

Global trend to use LTE performance and economies of scale instead of current proprietary systems

eMBMS provides for one to many communication channels

Further eMBMS applicationsPublic warnings in catastrophees, accidents, map and SW updates, …

… plenty of one-to-many applications exist

eMBMS for mobile TV

eMBMS for wide area TV distribution

- Mobile or even to the large screen?

- Free-to-air?- Large area SFN?- Capacity?- Cost?- …

17 © Nokia 2017

Nokia considerations

Spectrum use in Europe ~2015 – UHF remains attractive for multiple services

▪ Licence exempt: DECT, Wi-Fi (2.4 GHz,…)

▪ Possible future mobile use:LTE (700 MHz, L- and S-Band, 2.3 GHz, ...)

▪ Mobile use:GSM (900, 1800 MHz), UMTS (2.1 GHz)LTE (800, 1800, 2600 MHz)

▪ Broadcast use: FM, DAB, DVB-T

▪ Other services

Most valuable spectrum e.g. for mobile between ~450 MHz and 1 GHz large area coverage; DVB-T as of today occupies 320 MHz, after 700 MHz repurposing 224 MHz

Higher bands around 2 GHz and above deliver capacity in densely populated area

Below ~450 MHz, antennas are too large for handheld use

LTE in broadcast band 470-694 MHz: Supplemental Downlink (SDL)

Supplemental Downlink = additional capacity to exclusive (FDD) band in downlink direction

▪ Complements LTE capacity for video streaming and intense audio visual use

▪ Easier to coordinate with DTT use than conventional uplink and downlink operation within the band

▪ eMBMS as LTE broadcast technology can complement or in the more distant future even replace DVB-T for terrestrial TV distribution in supplemental downlink capacity

Downlink

Uplink

Supplemental Downlink

470 MHz 694 MHz 700 800 900

Uplink und Downlink

SDL may provide win-win between DTT and MBB way before 2030

LTE SDL Demo in live TV band in Espoo, Finland, Sep 2 2016

http://company.nokia.com/en/news/press-

releases/2016/09/02/qualcomm-nokia-and-yle-announce-worlds-first-

demonstration-of-lte-supplemental-downlink-in-a-tv-broadcast-bandhttps://ec.europa.eu/digital-single-market/en/blog/convergence-action-

interesting-demo-finland

LTE can increase efficiency of use in the valuable spectrum below 700 MHz

LTE broadcast 30 MHz DL 30 MHz UL

Digital Dividend 1(since 2010)

UHF 700 WRC-12/15LTE unicast

Integrated UHF Multimedia Network(long term Nokia vision)

Digital Dividend 2(from 2015)

LTE broadcast for e.g. 24 HD TV channels covering the most popular programs including public service broadcast

Dynamic spectrum allocation between broadcast and unicast = full flexibility

Massive capacity for non-linear content (Video on-demand, niche channels and a multitude of MBB services)

LTE broadcast builds on existing infrastructure and ecosystem

Digital terrestrial television

> DVB-T(2), ATSC, ISDB-T & DTMB

> Typically not available in smart phones and tablet PCs

> High towers require coordination (e.g. Geneva 06) and can use only fractions of the UHF band in any given location

> Multiple Frequency Network (MFN) or multiple Single Frequency Networks (SFN) required to cover large areas

LTE broadcast

> Single global standard

> Widest range of devices, latest CODECs,huge number of established BTS sites

> Improved UHF spectrumutilization due to small coordination distances

> Single Frequency Network (SFN) for national, regional and local service areas

> Cost comparable to DTT, but higher flexibility (adaptive broadcast/unicast split, interactivity)

Possible range of cost

Estimate on annual cost of DVB-T vs. LTE Broadcast distribution€160M annual spend for public broadcast vs. incremental cost of eMBMS capacity for MNO

Sensitivity analysis w.r.t.

• # base stations (eNB)

• RF bandwidth for 25 HD channels

e.g. 25 HD channels HEVC

25x 3.6 Mb/s / 1.5 b/Hz/s = 60 MHz

24 © Nokia 2017

eMBMS field trial in Munich

:Integration of Broadcast and Mobile Broadband in LTE/5G

Objectives of IMB5

• Create technological models for the convergence of broadcast and mobile broadband by:

• Testing the capabilities and limitations of current LTE eMBMS for nationwide broadcast infrastructure

• Creating an optimized system architecture for eMBMS based networks

• Defining input for modifications of the 3GPP standardization of eMBMS

• What the project is not about:

• Replacement of DVB-T/T2 by LTE eMBMS

• Discussing business models

• Tapping into the spectrum discussion

The Munich trial is part of a research project called IMB5

Public

IMB5- Consortium

Associated Partners:

This project is co-funded by the Bavarian Research Foundation

(Bayerische Forschungsstiftung BFS)

Industry first field trial of eMBMS Single Frequency Network (SFN) in Munich, GermanyImplemented with commercially available Flexi eNodeB hardware

Q3/14: field trial start

Pre-commercial SFN software implementation

Q4/14: demo center

Available for stakeholder visits

Configuration

> 4 locations, 4 cells> ISD 2 – 19 km> Nokia Flexi Multiradio 10 BTS commercial APT700 HW> eMBMS pre-commercial SFN, core network emulation> Qualcomm test terminals, eMBMS enabled measurement

equipment from Rohde & Schwarz (TSMW, ROMES)> UHF spectrum, 3GPP band 28> 10 MHz FDD (several SD channels, some HD channels)

Single Frequency Network (SFN) gaineMBMS RS SINR *) compared to single cell RS SINR

PCI 400 PCI 100 PCI 300

MBSFN area

• RS SINR measurement per single PCI over time

• This measurement is performed on the LTE reference signals in the non-MBMS subframes

• RS SINR eMBMS SFN measurement over time

• This measurement is performed only on eMBMS

reference signals in the eMBMS subframes

• Blue circled areas show SFN gain

• Red circled area indicates destructive interference

*) Reference Symbol Signal to Interference and Noise Ratio

CIR analysis to check guard interval violationsInter Symbol

inter-symbol

interference

16,7µs cyclic prefix

Interference

Channel Impulse

Response (CIR)

chart provides path

delays from

individual cells and

delay spread

information

Munich eMBMS trial network: spectrum configurationLTE DL (and UL) operational in 700 MHz band despite presence of DTT multiplexes

K48 K49 K50 K51 K52 K53 K54 K55 K56 K57 K58 K59

686 694 702 710 718 726 734 742 750 758 766 774 782 MHz

706 716 761 771

711 766

DVB-T-Mux(Pro7/ Sat1)Olympic Tower

V pol.

eMBMS trial

network Uplink

H pol.

DVB-T-Mux(div priv.)Olympic Tower

V pol.

DVB-T-Mux(ARD)Olympic Tower

V pol.

DVB-T-Mux(BFS)Olympic Tower

V pol.

eMBMS trial

network Downlink

H pol.

DVB-T transmit power: 100 kW ERP per carrier

DVB-T carriers within the trial LTE uplink spectrum produce in-band interference to the LTE receiver in the base station. Therefore notch filters were deployed. In the trial scenario this is relevant only for combined broadcast/unicast use cases.

3GPP Band 28 Downlink3GPP Band 28 Uplink

duplex distance 55 MHz

DVB-T-MuxHohen-peißen-berg

H pol.

Smartphone applications to show LTE 4 TV Broadcast use casesHbbTV example

Internet

eMBMSTV broadcast

LTE unicast

Controlled link,multicast

IP best effort

Program InformationMediathekVideotext/News

Miracast

The demo shows a combined broadcast/unicast use case on a smartphone:

- Switching between different TV broadcast channels

- Unicast overlay with VoD offering (HbbTV like presentation) - Switching between broadcast and unicast screens- Screencast via Wi-Fi to a large screen (smartphone as a “set top box”)

IMB5 presentation 14.1.2016 in Berlin, Bayerische Landesvertretung

5G Media Initiative

Nokia vision

Cooperation between broadcast and mobile broadbandIntegrated UHF Multimedia Network

• Distribution of linear audio-visual content to

mobile devices

• Mobile device may become the TV receiver for

the large screen

• Flexible allocation of bandwidth to linear and

non-linear content as needed

• Required capacity can be found in

470-694 MHz

• Broadcast - Mobile Broadband cooperation can

open win-win via more efficient spectrum use

LTE Broadcast - vde- · PDF file1 © Nokia 2017 LTE Broadcast Rundfunk über LTE...

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