TRENDS ///


EBU Media Director Annika Nyberg Frankenhaeuser keynote speech


DigiTAG DVB-T2 Event


DigiTAG (Digital Terrestrial Television Action Group), the organisation bringing together stakeholders from the Digital Terrestrial Television (DTT) industry, held a workshop on DVB-T2 in Istanbul late last year as well. Turkey launch in December, beginning in the capital Ankara,


with region-by-region launches and approximately six-month analogue simulcast. The analogue switch-off is scheduled for March 3, 2015.


About 160 delegates from Europe, Eastern Europe and Asia


heard from local industry players such as RTUK (Turkey’s regulator), TRT (public broadcaster), Anten AS (network operator) and the commercial broadcasters associations TVYD and RATEM, speaking on introducing DTT using the DVB-T2 standard. “Turkey is at a delicate phase of the launch of DTT,” said Taha


efficient to distribute live video and audio at “tablet quality” (1.4 Mbps or more) in thousands of networks cells, and possibly by several mobile network operators in parallel. To remedy this, T.U.


Braunschweig’s researchers imagined using DVB-T2 as the physical layer to carry LTE point-to-multipoint (P2MP) carrier traffic. DVB-T2 Future Extension Frames (FEF) would enable time domain spectrum sharing with other wireless networks, like LTE. Variable length and number of both frame types (DVB-T2 and FEF) would also enable flexible resource allocation, through cooperative spectrum use by terrestrial broadcast and mobile access networks. This “tower overlay” hybrid


future could allow a profitable re-use of existing broadcast networks, where (international) frequency co-ordination was already done. It would be an attractive approach for today´s broadcast network operators, as well as a joint resource for the operators of cellular networks; or a country-wide network provided by an independent (broadcast) network operator. At IBC 2013, T.U.


Braunschweig showcased a demo where a 6 Mbps broadcast video stream was managed as a standard DVB-T2 content and a 2 Mbps mobile targeted video was managed as a LTE-P2MP one. One hybrid modulator blended the two streams using DVB-T2 FEF capabilities, and a DVB-T2 transmitter was airing them on UHF channel 31 (554 MHz). On the receiver side, one off-the-shelf TV displayed the broadcast-quality content, while a LTE-A prototype


//////////////// 8 TV Technology Asia-Pacific I April 2014


receiver (with no DVB-T2 capability) did the same with the mobile-targeted content. In her closing remarks, the EBU’s Elena Puigrefagut wrapped up the seminar. Assuming that a sustainable DTT future requires certainty of spectrum availability, it’s key to strengthen the horizontal market: consumer electronic manufacturers, content owners, platform owners and operating system designers should all work together, she said. Broadcasters’ voices should


be louder, to reach European and international regulators but also national regulators: “We do a lot of technical work, but not enough on political lobbying!” Puigrefagut concluded. ///


Yucel, RTUK’s Deputy President. “However ,this workshop has shown the positive developments in other markets. We must move forward as it is important that Turkey goes digital. There is no future for analogue. There is the possibility to make digital terrestrial television a success, and we should take this opportunity.” A broad range of speakers from the DigiTAG membership


shared their experiences in markets where DVB-T and DVB-T2 have been established. Lessons learned included the need for an inter-operability testing environment, interactive standards such as HbbTV, detailed coverage maps, and taking advantage of the flexibility made possible by the DVB-T2 standard (mobile and multiple local regional services included). The need for a flexible environment, where channels can be shuffled and multiplexes restructured in the future as technology develops, was also a key area for discussion. "It is exciting to see the broad range and diversity of DVB-T2


deployments throughout the world,” said Simon Fell, the EBU’s Director of Technology and Innovation, and DigiTAG’s President. “The DigiTAG Workshop in Istanbul is an ideal opportunity for members of DigiTAG and others to bring this experience together for Turkish colleagues who can benefit from the developments that have taken place elsewhere, as they prepare for DVB-T2 services throughout Turkey.”


A combination of broadcast and mobile broadband techniques might deliver the 'best of both worlds.'


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