The Path To Uhdtv - Ultra High Definition Tv

Transcript

FTTH – the path to UHDTV Ultra High Definition TV Dr. Juergen Seidenberg / BKtel - Germany Table of Content • Definitions • Current Status: Current trends of new TV-sets • What´s next? => Consequences and final statements • What to do? • How to build a RVO system? • Properties of RVO • Summary Definitions Broadcast TV • Linear TV, transmitted by TV stations • Program with fixed schedule • Principle: „what everybody consumes, is distributed to everybody“ • >90% of TV subscribers watch <10% of all programs • Subscriber terminal = TV set • In general transmitted via terrestrial video (DVB-T) • Used in RF video overlay (RVO) • Can be transmitted via IPTV as well: • In most cases in a kind of LAN/WLAN to achieve exactly this purpose, • Broadcast TV then converts into IPTV. Definitions IPTV in general • WebTV, Internet TV, Streaming TV, Online-TV, ... • The subscriber creates his own program by few „clicks“. • Principle: „maximum of individualization“ • Subscriber terminal may vary (PC, Smartphone, tablet, …). Services are targeting PC functionality and capability. • Requires a broadband connection, no dedicated (e.g. CATV) network, therefore also named „over the top“. • The network provider´s revenue comes from the broadband connection, not from the content delivery. Current Status Current trends of new TV sets • User interface for internet services is adapted to TV screens – Convergence of Broadcast and Broadband: • HbbTV • Online video store of TV stations – Apps for different services based on internet • E.g. weather • E.g. Skype – OTT: Over-the-Top-Video-Services (Internet) • You Tube • Netflix Example: HbbTV – ARD (Germany) • Change from Broadcast TV to „Services via BroadbandNetwork“ by red button of remote control • Access to online video store, to broadcast messages etc. Example: TV Store Browser with Apps for the TV set Example: OTT on TV • Online videos with „Linear-TV“ user interface • Optimized for typical TV subscriber YouTube / leanback Current trends with new TV-sets • Higher resolution – “native” HD = 1080p • resolution of 1.920 x 1.080 Pixel ~ 2 Mio. Pixel – 4K = 4 x HD-resolution (VHDTV, already “on air”)) • Resolution of 4.096 x 2.160 Pixel ~ 8 Mio. Pixel – 8K = 16 x HD-resolution = UHDTV, to be launched with Rio Olympics) • Resolution of 8.192 x 4.320 Pixel ~ 32 Mio. Pixel • Trend towards 3D on stationary displays (TV sets) • TCL displayed a holographic display on the 2012 CES already Consequences from status analysis Medium term developments (1) Estimated bandwidth requirement per “TV station”: Videoformat # of lines Bandwidth with latest H.264, H.265 Compression* HD 1080p 16 Mbit/s 4k 2160p 30 Mbit/s 8k 4320p 100 Mbit/s • Consequently on short term the bandwidth requirement will double, on medium term even at least the six-fold data rate will be required • Other trends will underline this requirement (e.g. 3D-TV) * The required bandwidth depends on the kind of content. Frequently a smaller than required bandwidth is used temporary reduced resolution if the compression can´t cope with the allocated bandwidth. leading to Consequences from status analysis Medium term developments (2) • GPON installations typically use 1:32 or 1:64 splits; therefore the guaranteed data rate per subscriber is • 78 Mbit/s for 1:32 splits • 39 Mbit/s for 1:64 splits • If the full capacity is allocated to video, disabling additional high speed internet access at the same time, GPON can carry: • 4 channels of native HD content with 1:32 splits and • 2 channels of native VHDTV content with 1:32 splits • no channel of UHDTV content Consequences from status analysis Medium term developments (3) • However, offering one channel of video content per subscriber is not sufficient for a good subscriber service experience • at least two channels should be offered to feed two separate displays • one ore two channels for PVR recording should be possible • to transport 4 x UHDTV roughly 400 Mbit/s would be required • Today´s GPON equipment in medium term needs to be replaced with nextGen PON technology in order to follow the increasing data rates for video transmission if IPTV is the only means to transport video. What to do? PON upgrade for UHDTV transmission • Option #1: GPON will not be capable to handle the upcoming video data and will need to be replaced/complemented by higher speed technology such as NG-PON2 (TWDM-PON) • Option #2 comes from applying IPTV and broadcast TV by utilizing PON technology combined with RVO (RF Video Overlay) technology - RVO introduces a multi Gbit/s video broadcast pipe - RVO is a mature technology compatible to all PON standards incl. E-PtP, xG-PON1, NG-PON2 and also XGS-PON From GPON to NG-PON2 Reference: José Salgado: „Next Generation PON - Evolving the Access Network towards the ALL FIBRE Concept, FTTH Council Europe conference, Luxemburg, Feb. 2016 Wavelengths of PON technologies Reference: José Salgado: „Next Generation PON - Evolving the Access Network towards the ALL FIBRE Concept, FTTH Council Europe confernce, Luxemburg, Feb. 2016 Wavelengths of PON technologies Reference: José Salgado: „Next Generation PON - Evolving the Access Network towards the ALL FIBRE Concept, FTTH Council Europe confernce, Luxemburg, Feb. 2016 RVO technology overview • RF Video Overlay (RVO) transmits broadcast TV-Signals transparently on the same fiber as the PON data signals using optical wavelength multiplexing • The used technology originates from CATV and/or satellite transmission technology • The transmitted signal is compatible with current TV sets – subscribers with newer TV sets will not need to use a separate STB. • RF Video Overlay is compatible and independent from the selected PON technology (E-PtP, E-PtmP, GPON, 10GEPON, xGPON-1, nGPON2) RVO for CATV/SAT signals CATV signals via RF Video Overlay • Uses signals which are widely used in terrestrial broadcast video transmission – Analog: PAL/NTSC (compatible with all TV sets) – Digital: DVB-T or DVB-C (digital video broadcast standards requesting a STB or last generation TV sets) • Frequency range: 45 MHz – 862 … 1.000 MHz Satellite signal transmission via RF Video Overlay • 2,4 GHz bandwidth – Transmission of satellite IF (L-band): – QPSK/8-PSK (for digital Set Top Box DVB-S or last generation TV sets) • Frequency range: 950 MHz – 2.150 MHz IPTV and RVO together: a strong couple • IPTV is the most competitive service today to deliver unicast video services like Video on Demand (VoD); very important in low resolution video transmission to e.g. mobile terminals • RVO is the most competitive technology to deliver broadcast type of video services with high video resolution to fixed video terminals (e.g. transmission of real life video e.g. sports events, concerts, news, …) • If broadcast TV is transmitted via IPTV strong signal delays occur due to the complex (and expensive) buffering in the IP backbone network: 5 ~ 10 seconds for SDTV and 10 ~ 15 seconds for HDTV. For that reason Japan doesn´t transmit „Earthquake TV“ via IPTV. Data rate of RVO media pipe • RF-Video-Overlay enables to offload an enormous amount of data from the IP network Equivalent datarate # of UHDTV prgs. DVB-C (862 MHz) 5 Gbit/s 50 DVB-C2 (1000 MHz) 10 Gbit/s 100 DVB-T (862 MHz) 2.50 Gbit/s 25 DVB-S 3 Gbit/s 30 Remarks: DVB-C: DVB-C2: DVB-T: DVB-S: here: 256-QAM with 6.9 MSym/s, 188/204 RS FEC, 50.87 Mbit/s here: 4.096-QAM, 10.5 bit/Hz here: 64 QAM, 8k, ¾, TS=26.346 Mbit/s here: 8-PSK with 36 MSym/s, 96.45 Mbit/s, 9/10 BCH-LDPC How to build a RVO system? Step 1: start with xG-PON system IP - Network Backbone Router 1/10GbE OLT for nn x PON ONU Optical Splitter FOVnnn-PLC TV PC VoIP ONU PC VoIP ONU TV PC VoIP TV How to build a RVO system? Step 2: add WDMs IP - Network Backbone Router 1/10GbE OLT for nn x PON ONU Optical Splitter FOVnnn-PLC TV PC VoIP ONU FWMnn-OLT PC VoIP ONU nn x WDM TV PC VoIP TV How to build a RVO system? Step 3: add RVO IP - Network Backbone Router 1/10GbE OLT for nn x PON ONU Optical Splitter FOVnnn-PLC RF Video Overlay TV PC VoIP ONU FWMnn-OLT PC VoIP Fx-ES10/26 Optical Transmitter Fx-OVnnxxx Optical Amplifier with nn outputs ONU nn x WDM TV PC VoIP TV Properties of RVO • The RF video overlay system introduces a wavelength of 1550 nm to the E-PtP, GPON, GEPON wavelengths • The wavelength multiplexing costs appr. 1 dB of insertion loss for the WDM for a single fiber PON • The RVO system is DWDM ITU-grid compatible and can also be used with XG-GPON1, NG-PON2 or XGS-PON etc. in the future GPON + RVO OLT Estimated cost of subscriber equipment PON technology and “green IT” considerations Summary Summary • IPTV via GPON on medium term will not be able to handle Broadcast TV due to the expected increasing data rates! • However, new TV sets are prepared to support IPTV services! • IPTV and Broadcast TV are not excluding each other but complimentary. • The separate „Media-Pipe“ via RVO does not put any load on the IP backbone and GPON network. • Additionally to the hundreds of programs delivered via RVO the customers benefit from the full GPON IP capacity for all other services incl. IPTV. • Broadcast TV services remain very simple and user friendly: The customers might even use existing TV sets and PVRs without the need of IPTV set top boxes Talk to the Speaker : Exhibition Hall, Booth #16! Juergen Seidenberg [email protected] www.bktel.com