The role of terrestrial DVB standards in broadcast / mobile broadband integration

Transcription

1 The role of terrestrial DVB standards in broadcast / mobile broadband integration Alexander Schertz Institut fuer Rundfunktechnik, Germany CW Technology and Engineering Conference, London

2 Agenda The basic use cases of TV consumption today Mobile broadcast and broadband standards to serve them: DVB, LTE Cost-effective solutions for terrestrial TV distribution using these standards Broadcast /mobile broadband integration for these solutions Conclusions Seite 2

3 The basic use cases of TV consumption today Linear Nonlinear Stationary Clearly dominating Increasing Mobile Of minor but increasing importance These four use cases must be served in a cost-effective way. Seite 3

4 DVB and LTE standards Mobile broadcast and broadband standards DVB, LTE DVB (terrestrial) Developed by Industry-led consortium of over 200 broadcasters, manufacturers, network operators etc. Importance One of the leading international standards LTE 3GPP: telecommunications standard development organizations (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC) The leading world standard of the future For the distribution of Linear TV Linear TV (embms) Nonlinear TV Any other content Seite 4

5 DVB and LTE standards Worldwide use of DVB and LTE Blue: adopted or deployed in December 2014 Source: DVB Red: Countries and regions with commercial LTE service Source: Wikipedia Seite 5

6 DVB and LTE standards The development of the DVB (terrestrial) family DVB study mission report Trials Commercial No longer used Draft ETSI standard DVB-T DVB-H DVB-SH DVB-T2 T2-lite DVB-NGH First digital TV standard in Europe Well suited for fixed and portable reception of SDTV For Handhelds Time interleaving (TI) against burst errors Time slicing (TS) for energy saving For hybrid satellite / terrestrial broadcasting Improvements over DVB-H: - Turbo coding - TI: longer periods - antenna diversity Well suited for HDTV and mobile: - Improved FEC - 256QAM - 16K, 32K FFT - MISO Physical Layer Pipes (PLP) e. g. fixed, mobile in parallel DVB-T2 profile Reduction of complexity Code rates 2/5 and 1/3 for robustness e. g. for mobile within DVB-T2 PLP MIMO Time Frequency Slicing with advanced Network Planning (TFS/ANP) to improve coverage or capacity Including profile for hybrid satellite / terrestrial broadcasting Seite 6

7 DVB and LTE standards Using DVB for stationary and mobile reception in parallel Stationary / mobile Advantage Disavantage Same signal No Simulcast No optimum parameters for both Separate networks Separate signals in Physical layer pipes (same FFT) Signal for mobile in Future Extension Frames Optimum parameters for both Endless simulcast Seite 7

8 Cost-effective solutions for terrestrial TV distribution Standards and networks for TV distribution: cost aspect HTHP DVB LTLP LTE Unicast LTLP embms Stationary Linear Cost-effective Very Expensive Rather expensive Nonlinear - Very Expensive - Mobile Linear Cost-effective Very Expensive Rather expensive Nonlinear - Cost-effective - More cost-effective alternative for stationary / nonlinear: fixed broadband Seite 8

9 Cost-effective solutions for terrestrial TV distribution Solution 1 HTHP DVB LTLP LTE Unicast LTLP embms Stationary Linear Cost-effective Very Expensive Rather expensive Nonlinear - Very Expensive - Mobile Linear Cost-effective Very Expensive Rather expensive Nonlinear - Cost-effective - Network A Network B Seite 9

10 Cost-effective solutions for terrestrial TV distribution Solution 2 HTHP DVB LTLP LTE Unicast LTLP embms Stationary Linear Cost-effective Very Expensive Rather expensive Nonlinear - Very Expensive - Mobile Linear Cost-effective Very Expensive Rather expensive Nonlinear - Cost-effective - e. g. DVB-T2 network A, HD service in PLP e. g. DVB-T2 network A, T2-lite service in PLP Network B Seite 10

11 Cost-effective solutions for terrestrial TV distribution Solution 3 HTHP DVB LTLP LTE Unicast HTHP embms Stationary Linear Cost-effective Very Expensive Cost-effective Nonlinear - Very Expensive - Mobile Linear Cost-effective Very Expensive Cost-effective Nonlinear - Cost-effective - For HTHP embms: modifications of LTE standard required DVB-T2 network A Network B Network A, embms signal in Future Extension Frames Proposed by Prof. Dr. Ulrich Reimers, Technische Universität Braunschweig Seite 11

12 Cost-effective solutions for terrestrial TV distribution Solution 4 HTHP DVB LTLP LTE Unicast HTHP embms Stationary Linear Cost-effective Very Expensive Cost-effective Nonlinear - Very Expensive - Mobile Linear Cost-effective Very Expensive Cost-effective Nonlinear - Cost-effective - For HTHP embms: modifications of LTE standard required Network A Network B Seite 12

13 Cost-effective solutions for terrestrial TV distribution IRT trials: the DVB-T2 network DVB-T2 test field Run by Bayerischer Rundfunk and IRT Allows manufacturers to test their devices Availability: Seite 13

14 Cost-effective solutions for terrestrial TV distribution IRT trials: the embms network Seite 14

15 Cost-effective solutions for terrestrial TV distribution IRT trials: the embms network Seite 15

16 Cost-effective solutions for terrestrial TV distribution IRT trials: the embms network Seite 16

17 Broadcast / mobile broadband integration Why broadcast / mobile broadband integration? Because it s useful: Linear and nonlinear TV content always & everywhere Linking of linear and nonlinear TV content Because it is possible: suitable UEs (smartphones, tablets) will be ubiquitous in the near future Seite 17

18 Broadcast / mobile broadband integration Integration of broadcast (DVB) and mobile broadband (LTE) DVB signal DVB tuner Linear TV Nonlinear TV Common interface on the screen of the smartphone or tablet User LTE signal LTE coder / decoder Return channel HbbTV = Hybrid Broadcast Broadband TV Yields links to nonlinear content Seite 18

19 Broadcast / mobile broadband integration Example: demo app of the IRT linear content Seite 19

20 Broadcast / mobile broadband integration Example: demo app of the IRT Nonlinear content Seite 20

21 Broadcast / mobile broadband integration Example: demo app of the IRT Link to nonlinear content Seite 21

22 Conclusions Four use cases of TV consumption to be served: stationary / mobile linear / nonlinear Stationary / mobile reception: one signal for both separate networks / separate signals Cost effective solutions: linear content via broadcast network: HTHP / DVB or embms (LTE) nonlinear content via mobile broadband network: LTLP / LTE unicast Integration of broadcast and broadband: DVB broadcast receiver in smartphones and tablets common interface Seite 22

23 Thank you for your attention. Alexander Schertz Frequency management department Institut fuer Rundfunktechnik Floriansmuehlstrasse Munich Tel. +49-(0) Fax +49-(0) Die Folien/Dokumente sind durch das Urheberrecht geschützt. Eine Vervielfältigung ist nur mit Genehmigung des Verfassers gestattet. Dieser Urheberrechtshinweis darf nicht entfernt werden.