All posts by Briantist
Below are all of Briantist's postings, with the most recent are at the bottom of the page.
MikeP: the Ofcom planning documents do list the total dedication of current TV frequencies to mobile communications by 2030. The 700MHz band, as it called, is not necessarily going to be the end of it. Just the 2018 part.
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See http://stakeholders.ofcom….pdf and http://stakeholders.ofcom….pdf etc plus my Ofcom channel bingo II - introducing the bands | 4G-at-800 | ukfree.tv - 11 years of independent, free digital TV advice articles.
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From TV should switch to internet, peers suggest | Technology | The Guardian :
"The switch to digital television is not yet complete, but UK households could be forced to adjust their sets again with a parliamentary inquiry now forecasting a second wave of switchover, this time from the airwaves to the internet. The government should draw up plans to have every channel, including those from the BBC, broadcast over the internet, freeing up the spectrum for other uses such as mobile phones, the House of Lords suggested on Tuesday. The recommendation comes months after most of the country's 26m television households retuned their sets from analogue to digital, with two regions the north-east and Northern Ireland due to complete the process by the end of October".
Abolish TV To Make Room For The Internet - Forbes
House of Lords Suggests TV Switch From Broadcast to Internet
"The report adds that the spectrum currently used to carry television signals could be used by mobile phone operators to help broaden their national coverage."
The report is here House of Lords - Broadband for all - an alternative vision - Communications Committee
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MikeP "vision carrier at 799.25 to 847.25 MHz [sound at +6 MHz]) "
You seem to be having an analogue moment!
How digital television works | News headlines | ukfree.tv - 11 years of independent, free digital TV advice
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michael: the capacity of 4G is limited to 6MHz (up+down) per operator... It's not that much if 60 million people want to use it at once.
This is from Ofcom: The future role of spectrum sharing for mobile and wireless data services Licensed sharing, Wi-Fi, and dynamic spectrum access http://stakeholders.ofcom….pdf
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pw69: If I recall correctly, it was because there was a channel overlap with ... Denmark. C12 is still used in Denmark where it is "reserved by the military". See Television channel frequencies - Wikipedia, the free encyclopedia .
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Technical Evolution of the DTT Platform
An independent report by ZetaCast, commissioned by Ofcom
http://stakeholders.ofcom….pdf
"Spectrum Issues
15. The total amount of spectrum available for DTT may change over time ... Spectrum re-planning at a later date may result in DTT spectrum being re-assigned to other services, such as mobile broadban "
7.3 Future Spectrum re-Planning
The Asia-Pacific Telecommunity (APT), which includes Australia, China, Japan, South Korea and other countries in the Asia Pacific Region, agreed on a plan to assign the 698-806 MHz frequency range to mobile broadband in September 2010. There appears to be increasing interest in using this plan as the basis of an internationally harmonised approach for mobile broadband, to enable better economies of scale and facilitate global roaming.
If this band were also to be assigned to mobile broadband in Europe, it would necessarily involve a reduction in the spectrum available to DTT. Given the lengthy timescales normally required for international frequency coordination, it is assumed that this would take place after 2020, most probably around 2025. The scenarios examined in Section 8 therefore include the possibility that the number of DTT multiplexes would be decreased by 3 from 2025.
Table 7: Overview of the Scenarios Considered : No Roll-out of 3rd Gen services, 1st Gen services switched off in 2030
8.3.10 Scenario D1
In Scenario D1, there is no launch of 3rd Generation services during the period under consideration and 1st Generation services are switched off in 2030. It is also assumed that the DTT capacity is reduced to 3 multiplexes in 2025. A possible evolution of the number of programme channels of each generation of technology is summarised in Table 17 below.
Pros:
The advantage of this scenario is that more spectrum would be available for other uses from 2025.
etc etc etc
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KEVIN GARDINER: It could be possible you are recording a programme that was not available in HD and is being just transmitted in MPEG4?
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And, from
Robert Kenny, Robin Foster & Tim Suter
The value of Digital Terrestrial Television in an era of increasing demand for spectrum
January 2014
http://www.digitaluk.co.u….pdf
page 66
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Wednesday 22 January 2014 1:07PM
From Ariel - Hall calls for protection of DTT
"Tony Hall is calling on the government and Ofcom to protect the future of digital terrestrial television at a 'critical time'.
The director general is one of four broadcasting chiefs to write to policy makers highlighting the importance of DTT, which delivers both Freeview and YouView to UK viewers, in a year when its share of the airwaves may be under threat.
Digital switchover freed up capacity for 4G mobile broadband, and now a further shake-up is being considered to give more spectrum to the mobile market, which already has the lion's share.
The letter, which is co-signed by ITV CEO Adam Crozier, Channel 4 CEO David Abraham and Arquiva CEO John Cresswell, was sent together with a new report that examines DTT's economic and social value.
It finds that the free-to-air platform, watched in three-quarters of UK homes, returns nearly £80bn to the UK economy - higher than previous estimates."