Pásmo
UHF jako bitevní pole - tak označuje CEPT
současný stav návrhů a postupně stále více politizovanou diskuzi
k využití kmitočtového pásma 700 MHz. CEPT se této otázce po technické
stránce přirozeně věnuje delší dobu, aktuálně pak například v právě
dokončovaném návrhu Reportu č.224 (Připravovaném Výborem
pro elektronické komunikace ECC), kterému předcházela široká a dlouhá diskuze.
CEPT se ve svých aktuálních
postech prezentuje neurčitě: „Zdá se, že příliš brzy předpovídat, co je
optimální rovnováha mezi TV příjmem a mobilními službami… „
CEPT
v průběhu října dokončuje studii
o budoucnosti pásma UHF. Po dlouhých diskuzích výbor CEPTu - ECC
TG6- dokončil návrh Reportu ECC 224,
který se týká "Dlouhodobé vize využití pásma UHF pro vysílání“.
Koncept zprávy ECC 224 je
výsledkem diskuzí a veřejné
konzultace ke studii o využití pásma UHF, s důrazem na frekvenční úsek 470-694 MHz. Je to
jeden z klíčových podkladů pro
evropské přípravy na světovou konferenci
WRC-15. Jedním z impulsu byl i legendární názor
ex-komisaře pana Pascala Lamy a jeho materiál pro skupiny zabývající se
v rámci Evropské komise politikou rádiového spektra (RSPG). Více informací o konzultaci k UHF zde.
Návrh
ECC zdůrazňuje významnou úlohu platformy DVB-T, která poskytuje
bezplatné terestrické televizní služby a má mj. i zásadní význam pro veřejnoprávní
vysílání. Zdůrazňuje se, že se celá věc týká klíčové
regulační a politické otázky i
nových technologií a především diváků…. Report
ale ani v této době nedává jednoznačné doporučení, když uvádí celou řadu
možných budoucích scénářů. Připouští ale, že je
potřeba zajistiti určitou flexibilitu ve využití této části kmitočtů tak, aby
to do budoucna „ nebránilo technologickému a inovačnímu pokroku…“.
ECC CEPT předpokládá 4 hlavní scénáře dalšího
vývoje využití „televizního“ kmitočtového pásma. Kromě základních jde o
kombinaci variant, ale vše zatím bez jednoznačného doporučení a preferencí.
Návrh prošel v době od června do 9. Září veřejnou
konzultací. Skupina TG6 se sešla na začátku
října, aby přezkoumala odpovědí obdržené v průběhu veřejné konzultace a dokončila svou práci do finální
podoby. Zpráva nyní čeká na své závěrečné schválení na zasedání Výboru
v listopadu 2014.
O
plánování frekvenčního plánování a technických podmínek pro digitální vysílání
v DVB-T2 i o interoperabilitě
s jinými druhy vysílání (včetně digitálního rozhlasu) je možné se dozvědět
více například v aktuální studii EBU zde.
P.S. Výbor pro elektronické komunikace (ECC) sdružuje 48 zemí. V rámci své činnosti se výbor věnuje společným „politikám“ a
právním předpisům v oblasti elektronických komunikací
a souvisejících aplikací. Jeho hlavním cílem je harmonizovat účinné využívání rádiového spektra v celé Evropě. Je aktivní na mezinárodní úrovni, kde se
dojednávají a připravují společné evropské návrhy v rámci ITU i na dalších mezinárodních fórech (http://www.cept.org/ecc).
---------------------------------------------------------------------------------------------------------------------
Executive summary
Traditionally, broadcasting and broadband communication services have
their own regulations, market structure and typical dedicated network
infrastructure (e.g. high power / high tower versus dense networks) in order to
provide their respective set of services. The future development of services
and terminals is blurring the border between the two “worlds” for the end user
and may require innovative approaches to deliver content to the end users in
the most efficient way from technical, economical and social perspective.
The studies contained in this Report identify and analyse possible
scenarios for the development of the band 470 – 694 MHz in the long term
starting from the existing situation and recognizing ongoing studies in the 700
MHz band in Europe, and short to medium term developments (e.g. AI 1.2 of
WRC-15 and the response to the European Commission Mandate on the 700 MHz
band). The current situation is dealt
with in the Report by describing the current role of the terrestrial broadcast
platform including issues such supporting social inclusion and providing
information in times of emergencies. In addition, the regulatory framework for
the provision of audiovisual media services, the duration of currently assigned
TV Rights of Use and current consumption of audiovisual content is also
explored in the Report.
The Report addresses the trends in the evolution of services (broadcast,
mobile and converged services to consumers) as well as the networks and technologies
with the potential to deliver these services in the band. It includes
consideration of the way in which audio visual content consumption habits may
be changing. The most important developments in relation to the evolution of
delivery of broadcast services in fixed and mobile environments are also
identified. The studies contained in the Report are based on assumptions made
on expected developments for the various current platforms and technologies
under consideration and on the demand and supply of the envisaged services.
Thus, it was necessary to develop relevant indicators in order to monitor the
assumptions made on expected developments used for the construction of the
scenarios in the future. These indicators are described in Chapter 5 and
suggested as suitable for monitoring developments in the services expected to
use the UHF band. Further consideration is required on the measurement and the
monitoring of these indicators.
This Report discusses the general classes of scenarios considered by CEPT
in defining the long term vision for the band 470-694 MHz. Annex 3 provides a
detailed description and the assessment of all the scenarios studied by CEPT.
CEPT considers that the following four classes of scenarios could cover the
developments in the band 470-694 MHz in the long term:
§ Class A: Primary usage of the band
by existing and future DVB terrestrial networks
This class of scenarios
assumes a natural evolution of the DTT platform based on HPHT and/or LPLT
networks taking into account the ongoing technological and service
developments, and assuming a stable regulatory environment and access to the
spectrum.
§ Class B: Hybrid usage of the band
by DVB and/or downlink LTE terrestrial networks
This class of scenarios
assumes that broadcast and mobile broadband services in the UHF band would in
the future be delivered via LTE SDL/eMBMS, with or without DTT platform, based
on HPHT and/or LPLT networks. The scenarios of this class generally provide
additional unicast downlink capacity.
§ Class C: Hybrid usage of the band
by DVB and/or LTE (including uplink) terrestrial networks
This class of scenarios
assumes that broadcast and mobile broadband services in the UHF band would in
the future be delivered via LTE (including uplink), with or without DTT
platform, based on HPHT and/or LPLT networks. This class corresponds to
scenarios where IMT-like unicast uplink and downlink are introduced in the
band.
§ Class D: Usage of the band by
future communication technologies
Though most scenarios
described herein are derived and based on today’s DTTB and Mobile technologies
it is envisaged, that new, more flexible and possibly convergent technologies,
will be developed and implemented in future for the transmission/distribution
of audiovisual content in the UHF band.
The cross-border coordination and coexistence is one element of the
assessment and is addressed in chapter 6 of the Report based on the above
mentioned classes.
The main conclusions of the studies are stated below.
Content, which could be traditionally seen as typical broadcast content
(i.e. audiovisual content like videos, music) is also available in the internet
and distributed via cable, optical fibre or wireless broadband access. On the
other hand, broadcast services are more and more heading for using reverse
channels or additional parallel channels to allow the user more flexibility and
access to additional information. A
cooperation between radiocommunication services is expected on a long term.
Traffic expectations for broadcast service and broadband access,
including wireless, are mainly based on the increasing delivery of audiovisual
content in improved quality to an increasing number of users. This will result
in a higher traffic asymmetry.
Due to its propagation characteristics, the band 470-694 MHz can be
efficiently used for the distribution of audiovisual services. These services
may be linear or non-linear. The number of receiving users served by a content
provider can vary from one to up to several million users. This is depending on
the different types of content, user density, the specific social and economic
situation, and technology. Therefore,
the long term usage of the band 470-694 MHz is mainly, foreseen for downstream
audiovisual content distribution.
The scenarios listed in Annex 3 and
classified in Section 6 describe possible long term future deployments in the
band 470-694 MHz. Each of these scenarios has a certain potential to occur.
With the current state-of-the-art of the radiocommunication technologies there
are incompatibilities between some scenarios. However, the situation as of
today may change in the long term.
The variety of scenarios considered in
this report should be understood as an indication for different
needs/requirements in different countries regarding the future use of the band
470-694 MHz.
In order to facilitate different scenarios considered by the CEPT for
the usage of the band 470-694 MHz, it could be necessary to introduce more
flexibility in the regulatory environment governing the use of this band. It should among others take account of possible advances
in radiocommunication technologies far beyond the current situation as well as
of different needs and requirements in different countries. To avoid
interference issues between administrations and inefficient usage of spectrum,
the compatibility between scenarios has to be taken into account.
There could be different measures to
provide for the regulatory flexibility in the band 470-694 MHz, if so required.
It should be pointed out that any modification of the Radio Regulations to
implement flexibility has to be discussed in the framework of ITU, taking into
account the inherent flexibility of the Radio Regulations and the GE06
Agreement.
Overall, the following
non-binding elements may assist administrations when deciding on a particular
scenario for the usage of the band 470-694 MHz:
§ the current
national interest objectives;
§ the implications
of a given scenario on the audiovisual industry, content creation and user
expectations;
§ monitoring of
the market and technological developments by means of the key indicators as
defined in Chapter 5;
§ the cost/benefit
analysis with a focus on the impact on consumers;
§ assessment
criteria such as but not limited to those that were used in the assessment of
the scenarios listed in Annex 3;
§ a realistic time
frame for the transition towards a new scenario, taking into account duration
of the existing rights of use and the spectrum needs during the transition
period as well as the need for continuation of the service (in the context of
this report);
§ the necessity
for cross-border coordination;
§ the national
legal and regulatory framework.
