LTE Broadcast. Rundfunk über LTE Mobilfunk. Ulrich Rehfuess, Head of Spectrum Policy 27. April Nokia 2017
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1 LTE Broadcast Rundfunk über LTE Mobilfunk Ulrich Rehfuess, Head of Spectrum Policy 27. April Nokia 2017
2 TV of the future: the smart phone at the heart of it? TV receiver, mobile and fixed mini TV set TV integreated with internet access and social media Settop Box (Empfänger) für großen Bildeschirm Intelligent remote control 2 28/04/2017
3 Converge happens e.g. waipu.tv 3 Nokia 2017 ulrich.rehfuess@nokia.com
4 TV reception today (usage % in German households) Satellite TV (~45%) cable TV (~45%) Internet TV (~5%) Terrestrial TV (DVB-T/DVB-T2) via antenna (~5% primary / ~10% total) DSL 4 Nokia 2017 ulrich.rehfuess@nokia.com
5 Mobile radio without broadcast mode Impact of massive linear video use in unicast V V V V V 5 Nokia 2017 ulrich.rehfuess@nokia.com
6 Mobile radio with broadcast mode embms / LTE broadcast Resources for unicast and broadcast F F F F F F F F F F 6 Nokia 2017 ulrich.rehfuess@nokia.com
7 7 Nokia 2017
8 Telstra to launch LTE-Broadcast large scale 2H Nokia 2017 ulrich.rehfuess@nokia.com
9 What is embms? 9 Nokia 2017
10 Evolved Multimedia Broadcast Multicast Service (embms) solution architecture embms components MBMS admission control MBMS radio resource allocation embms New Entity embms User Traffic embms Signalling UE MCE M2 enb M3 M1 MME MBMS GW Sm CP UP SGmb SGi-mb BMSC Content Provider 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 user service provisioning and delivery MBMS Bearer Service authorization and initiation MBMS transmission scheduling and delivery Entry point for content providers transmissions 10 Nokia 2017 MCE: Multi-Cell/Multicast Coordination Entity, BMSC: Broadcast Multicast Service Center
11 Growing interest in Media mobile distribution Evidence in recent Fora and Standards activity Fora > 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 11 Nokia 2017
12 embms use cases 12 Nokia 2017
13 embms for enhanced stadium experience content delivery in live events For content generation: mobile edge video orchestration 13 Nokia
14 embms for group communications e.g. in Public Safety networks LTE 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 14 Nokia 2017
15 Further embms applications Public warnings in catastrophees, accidents, map and SW updates, plenty of one-to-many applications exist 15 Nokia 2017
16 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? - 16 Nokia 2017 ulrich.rehfuess@nokia.com
17 Nokia considerations 17 Nokia 2017
18 MHz 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 Higher bands around 2 GHz and above deliver capacity in densely populated area 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 Below ~450 MHz, antennas are too large for handheld use 18 Nokia 2017 ulrich.rehfuess@nokia.com
19 LTE in broadcast band 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 470 MHz 694 MHz Supplemental Downlink Uplink und Downlink Uplink Downlink SDL may provide win-win between DTT and MBB way before Nokia 2017 ulrich.rehfuess@nokia.com
20 LTE SDL Demo in live TV band in Espoo, Finland, Sep Nokia 2017 ulrich.rehfuess@nokia.com
21 LTE can increase efficiency of use in the valuable spectrum below 700 MHz Integrated UHF Multimedia Network (long term Nokia vision) Digital Dividend 2 (from 2015) Digital Dividend 1 (since 2010) LTE broadcast LTE unicast UHF 700 WRC-12/15 30 MHz DL 30 MHz UL LTE broadcast for e.g. 24 HD TV channels covering the most popular programs including public service broadcast Massive capacity for non-linear content (Video on-demand, niche channels and a multitude of MBB services) Dynamic spectrum allocation between broadcast and unicast = full flexibility 21 Nokia 2017 ulrich.rehfuess@nokia.com
22 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 spectrum utilization 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) 22 Nokia 2017
23 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 e.g. 25 HD channels HEVC 25x 3.6 Mb/s / 1.5 b/hz/s = 60 MHz Possible range of cost Sensitivity analysis w.r.t. # base stations (enb) RF bandwidth for 25 HD channels 23 Nokia 2017 ulrich.rehfuess@nokia.com
24 embms field trial in Munich 24 Nokia 2017
25 The Munich trial is part of a research project called IMB5 :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 25 Nokia 2017 ulrich.rehfuess@nokia.com Public
26 IMB5- Consortium Associated Partners: This project is co-funded by the Bavarian Research Foundation (Bayerische Forschungsstiftung BFS) 26 Nokia 2017
27 Industry first field trial of embms Single Frequency Network (SFN) in Munich, Germany Implemented with commercially available Flexi enodeb hardware 7,5km 2km 10km Q3/14: field trial start Pre-commercial SFN software implementation Configuration Q4/14: demo center Available for stakeholder visits > 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) 27 Nokia 2017 ulrich.rehfuess@nokia.com
28 embms RS SINR *) compared to single cell RS SINR Single Frequency Network (SFN) gain PCI 400 PCI 100 PCI 300 MBSFN area RS SINR embms SFN measurement over time RS SINR measurement per single PCI over time This measurement is performed on the LTE reference signals in the non-mbms subframes 28 Nokia 2017 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 28
29 CIR analysis to check guard interval violations Inter Symbol 16,7µs cyclic prefix inter-symbol interference Interference Channel Impulse Response (CIR) chart provides path delays from individual cells and delay spread information 29 Nokia 2017
30 Munich embms trial network: spectrum configuration LTE 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 3GPP Band 28 Uplink 3GPP Band 28 Downlink DVB-T- Mux (Pro7/ Sat1) Olympic Tower embms trial network Uplink DVB-T- Mux (div priv.) Olympic Tower DVB-T- Mux Hohenpeißenberg DVB-T- Mux (ARD) Olympic Tower DVB-T- Mux (BFS) Olympic Tower embms trial network Downlink V pol. H pol. V pol. H pol. V pol. V pol. H pol MHz DVB-T transmit power: 100 kw ERP per carrier 30 Nokia 2017 ulrich.rehfuess@nokia.com duplex distance 55 MHz 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.
31 Smartphone applications to show LTE 4 TV Broadcast use cases HbbTV example Miracast embms TV broadcast Controlled link, multicast LTE unicast Program Information Mediathek Videotext/News IP best effort Internet 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 ) 31 Nokia 2017 ulrich.rehfuess@nokia.com
32 IMB5 presentation in Berlin, Bayerische Landesvertretung 32 Nokia 2017
33 5G Media Initiative 33 Nokia 2017
34 34 Nokia 2017
35 35 Nokia 2017
36 Nokia vision 36 Nokia 2017
37 Cooperation between broadcast and mobile broadband Integrated 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 MHz Broadcast - Mobile Broadband cooperation can open win-win via more efficient spectrum use 37 Nokia 2017 ulrich.rehfuess@nokia.com
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