PMSE DTT spectrum sharing Darko Ratkaj European Broadcasting Union ratkaj@ebu.ch WM08 - PMSE Workshop at EuMW2015
I will speak about Terrestrial broadcasting Spectrum sharing between DTT and PMSE o How does it work? o Why is this model in danger? Possibilities to meet the PMSE spectrum requirements in the future. Way forward and some takeaways September 7, 2015 EBU: PMSE DTT spectrum sharing 2
Terrestrial broadcasting is a success story The largest TV platform in Europe More than 40% of the primary TV sets, many more secondary sets Near-universal coverage Exceeds 98% of the population for public service programmes Supports national, regional, and local services Free-to-air in all countries, like no other platform Low cost for broadcasters, guaranteed quality Well under 1 per TV channel per household / year Supports HDTV, demonstrated also for UHDTV Efficient use of the spectrum, sharing with PMSE, WSD Key pillar for European content creation 80% of the European content is financed by FTA broadcasters September 7, 2015 EBU: PMSE DTT spectrum sharing 3
DTT - PMSA spectrum sharing DTT A B C D E F TV frequency channels Interleaved spectrum (PMSE) September 7, 2015 EBU: PMSE DTT spectrum sharing 4
A bit of history The first: TV-related patents early 1900s Patent for a wireless microphone 1917 TV transmissions late 1920s Use of wireless microphones late 1940s TV frequency plan Stockholm 1961 September 7, 2015 EBU: PMSE DTT spectrum sharing 5
The problem (1) Spectrum demand for PMSE is increasing (more complex productions, increasing quality requirements, increasing number of events). while the available spectrum is shrinking. New entrants compete with PMSE for the interleaved spectrum o o White space devices Mobile supplemental downlink Lack of certainty for the future Where to direct the investments? September 7, 2015 EBU: PMSE DTT spectrum sharing 6
2006 The problem (2) Broadcasting The UHF TV band 21 30 40 50 60 69 470 MHz 862 MHz 500, 600 MHz 700 MHz 800 MHz 2007 2012 2015 DTT migration Broadcasting BC + Mobile 21 30 40 50 60 61 69 470 MHz 790 MHz 862 MHz DTT migration Broadcasting BC + Mobile BC + Mobile 21 30 40 48 50 60 61 69 470 MHz 694 MHz 790 MHz 862 MHz BC + Mobile BC + Mobile 21 30 40 48 50 60 61 69 470 MHz 694 MHz 790 MHz 862 MHz September 7, 2015 EBU: PMSE DTT spectrum sharing 7
The problem (3) DTT 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 470 MHz V frequency channels 43 44 45 46 47 48 694 MHz Densification of DTT Interleaved spectrum (PMSE) White space devices Mobile supplemental downlink Substantially less (or no) spectrum for PMSE New interference environment September 7, 2015 EBU: PMSE DTT spectrum sharing 8
Possible solutions Spectrum management Preserve access to the UHF band for PMSE Find additional spectrum for PMSE o Take account of the operational requirements and constraints o Intelligent sharing to ensure interference-free operation o Tuning ranges are only half of the solution, the other half is making sure that enough spectrum is available for PMSE applications Technology development Efficient use of the available spectrum Improved resilience to interference Requires a long-term certainty of spectrum access Operational arrangements Improved coordination of event and programme productions September 7, 2015 EBU: PMSE DTT spectrum sharing 9
Audio PMSE frequency bands Currently available The VHF band (174-216 MHz) The UHF band o Interleaved spectrum in 470-694 MHz o The 700 MHz band guard band and duplex gap o The 800 MHz band duplex gap 1785-1805 MHz (duplex gap in the 1800 MHz IMT band plan) Under study 1350 1400 MHz 1492 1518 MHz 1518 1525 MHz European Commission s Decision (2014/641/EU) harmonises a minimum amount of spectrum across the EU for wireless microphones including the 800 MHz and the 1800 MHz duplex gaps, and additional 30 MHz to be made available upon request. September 7, 2015 EBU: PMSE DTT spectrum sharing 10
Is the spectrum sharing between PMSE and broadcasting and obsolete model? The sharing model remains viable but there are a number of issues that need to be addressed. Increasingly complex productions Increasing quality requirements Increasing PMSE spectrum requirements The need for long term certainty License-free sharing regimes Increasing interference levels Reduced amount of spectrum for PMSE Salami slicing September 7, 2015 EBU: PMSE DTT spectrum sharing 11
Way forward Preserve access to the UHF band for PMSE Identify and make available additional spectrum for audio PMSE below 2GHz (e.g. 1350-1400 MHz, 1492-1518 MHz) Ensure an interference-free environment for PMSE Better coordination of event and programme productions Long term certainty for investments into new technology and equipment Continuing and improved cooperation between the programme production and live performance sectors, the PMSE industry, broadcasters, standardisation organisations, administrations and policy makers. September 7, 2015 EBU: PMSE DTT spectrum sharing 12
Thank you Darko Ratkaj ratkaj@ebu.ch September 7, 2015 EBU: PMSE DTT spectrum sharing 13