Ofcom consults on future use of 700MHz band

Ofcom , the Super regulator is holding a consultation on the future of the 700MHz band (694 - 790 MHz). This band is being used for Wireless Broadband in several countries and the EU is proposing to harmonise this band across the EU for the same purpose.

The band falls within spectrum used for Digital Terrestrial Television (DTT) also know as the UHF band IV and V which spans 470MHz through 862MHz. After the digital switchover the 800MHz band was cleared (channels 61 through 69) and this was recently auctioned off for use by mobile network for 4G/LTE services.

The lower end of the band (channels 21 through 30) starting at 470MHz is used for interleaved spectrum, local TV broadcasts (from 2013), Program making and special events (PMSE) and whitespace services (from 2014).

The band between channels 31 to 37 - the 600MHz band was cleared as part of the digital switchover.

Channel 38 is used for PMSE exclusively and now allows high power devices in the lower end of the spectrum.

The current 700MHz DTT band extends from channel 39 through channel 60 and will also be used for whitespace services from 2014.

If this spectrum is made available for mobile broadband use, it will have very good propagation characteristics and be good for rural broadband and other uses.

Though Ofcom is consulting now, the 700MHz band won't be available until 2018 at the earliest as use of the band must be in-line with International policy.

Ofcom have produced a nice picture describing the changes.

Ofcom has a duty under the Wireless Telegraphy Act 2006 to have regard to: -

• the extent to which the electromagnetic spectrum is available for use, or further use, for wireless telegraphy
• the demand for use of the spectrum for wireless telegraphy
• the demand that is likely to arise in future for the use of spectrum for wireless telegraphy.

and using the 700MHz band falls into these duties.

Unfortunately it does mean all DTT transmissions will have to move into the cleared 600MHz (channels 31 through 37) band and the lower end of the current 700MHz band (channels 39 through 48) so in 2018 there is likely to be a second TV switchover. It's also likely that set top boxes will have to use DVB-T2 and MPEG4 (rather than the less efficient DVB-T and MPEG2 that is currently used by standard definition broadcasts today, though DTT in High Definition or HD already uses DBV-T2 and MPEG4).

The full statement is on-line here and stakeholders may respond through an on-line form.

Ofcom consults on GPS repeaters

Ofcom is holding a consultation on the use of Global Navigation Satellite System (GNSS) repeaters which operate in the following band 1164-1215 MHz, 1215-1300 MHz and 1559-1610 MHz. These cover both the US Global Positioning System and EU Galileo GNSS. A repeater system consists on an external aerial, a transmitter and an internal aerial which would allow GNSS reception indoors where normally there would be no reception. Ofcom is proposing a light licensing regime whereby users of GNSS repeaters would have to register their location with Ofcom. This is to quell concerns from the Civil Aviation Authority (CAA) who believe there could be aircraft interference. This proposal is in-line with CEPT and EU recommendations. This does not cover any kind of mobile repeater use (unless operated by a licensed Mobile Network Operator) or any other technology which could cause interference and any such use would still be a criminal offence under the Wireless Telegraphy Act (WTA) 2006. The consultation (available here) closes 16th April 2012.

Ofcom wants to allow mobile operators to trade spectrum

Ofcom is holding two related consultations, the first is to allow mobile operators to trade spectrum in the 900MHz, 1800MHz (1.8GHz) and 2100MHz (2.1GHz) bands, the second is to vary the Wireless Telegraphy Act so that the 3G licenses can be changed to support a new coverage obligation, a change to licence duration, a revocation notice period of 5 years (such revocation not to be capable of taking effect before the period for which the licences were auctioned expires), a provision for Ofcom to charge annual licence fees from the end of 2021 (when the period for which the licences were auctioned expires) and a provision relating to spectrum trading.

The are many reasons to allow spectrum trading which benefit the UK as a whole especially financially as spectrum licenses generate around £40bn per annum for the UK (and account for around 3% of the GDP). Spectrum trading has also been directed from Government.

This will also allow Everything Everywhere (the combined Orange and T-Mobile) to effective get rid of 2 x 15MHz pairs of spectrum from their 1800MHz allowance, which was agreed with the EU as part of the merger conditions. Everything Everywhere will be able to trade directly, as part of the digital divide spectrum (800MHz and 2.6GHz) or give it back to Ofcom who can re-award it.

This is likely to have a major impact when the 800MHz and 2.6GHz licenses are awarded as some entities may have a large chunk of additional spectrum (though companies such a 3 are hoping that there will be sub 1GHz spectrum caps) and can therefore free-up existing mobile spectrum.

The spectrum trading consultation may be responded to here and the WTA variance consultation here.

Ofcom liberalises the WTA

Ofcom the super regulator will changes to the Wireless Telegraphy Act to come into force on 1st November 2010 that will allow the following to be used in a license exempt manner: -

* Railway level-crossing radars at 24 GHz.

* Fixed Wireless Services (FWS) at 59.1 to 63.9 GHz.

* 900 and 1800 MHz Universal Mobile Telecommunications System (UMTS) terminals.

The changes also liberalise the technical specifications for the following: -

* Short Range Devices (SRDs) below 30 MHz when operating underwater.

* High Density Fixed Satellite Services (HDFSS).

* SRDs covered by the Commission Decision of 30 June 2010 amending Decision 2006/771/EC on harmonisation of the radio spectrum for use by short-range devices (the SRD Decision).

Though railway enthusiasts may be happy that railway crossing radars no longer need a license, the interesting ones for the general public are that FWS at 59.1 to 63.9 GHz (60GHz) are now license exempt as are 900 and 1800 MHz UMTS (i.e. 3G) terminals.

FWS at 60GHz will allow for very high-speed short range wireless links which will be suitable for in-room transmissions e.g. video links from a set-top-box to a TV mounted on a wall without using wires. Equipment is also expected for connecting USB equipment over wireless.

The 3G terminals at 900/1800 MHz opens the way for refarming the 2G networks so that they can be used for 3G services. When Ofcom sort this out, it should increase 3G coverage and make life easier for everyone.

The full statement is available from Ofcom.