Feeds

Ofcom extends deadline for interferers, those who fear them

4G vs granny-alarm deathmatch rumbles on

Providing a secure and efficient Helpdesk

Ofcom is extending the deadline for feedback on potential interference from, and to, 4G services ahead of next year's mega auction.

Ofcom has been speaking to manufacturers and retailers of kit using nearby frequencies, including personal alarms and monitoring keyfobs, and has now extended the window for their comment to match the 11 August deadline set for those concerned 4G is going to interfere with Digital TV broadcasts.

The scale of digital television, and potential impact of any interruption to service, pushed Ofcom to separate DTT interference into its own consultation, which established that 4G services will indeed knock out TV viewing for a significant number of people. But Ofcom has also published research (PDF, very technical) showing that other radio users nearby could also see problems, and extended the deadline for them to let the regulator know.

Those radio users come under the heading of Short range Radio Devices (SRDs), which includes a variety of audio equipment and radio frequency identity tags (RFIDs), as well as the wireless alarms of the type often used by the elderly, either fixed around the house or worn for easy access. All these devices operate, licence-free, between 863 and 870MHz. The 4G space tops out at 862MHz, which is close enough to generate significant interference to the low-power transmissions of SRDs.

The study does highlight some potential problems, though the fact that there are, as yet, no 4G handsets able to use the allocated band makes testing a rather theoretical affair. Modelling suggests that alarm systems won't be impacted; unsurprising given the simplicity of the signalling, but audio systems could see significant interference.

Anyone interested in mitigating such interference now has until August 11 to let Ofcom know, sharing a deadline with those who want to keep DTT on the air. ®

Choosing a cloud hosting partner with confidence

More from The Register

next story
Brit telcos warn Scots that voting Yes could lead to HEFTY bills
BT and Co: Independence vote likely to mean 'increased costs'
Phones 4u slips into administration after EE cuts ties with Brit mobe retailer
More than 5,500 jobs could be axed if rescue mission fails
New 'Cosmos' browser surfs the net by TXT alone
No data plan? No WiFi? No worries ... except sluggish download speed
Radio hams can encrypt, in emergencies, says Ofcom
Consultation promises new spectrum and hints at relaxed licence conditions
Turnbull: NBN won't turn your town into Silicon Valley
'People have been brainwashed to believe that their world will be changed forever if they get FTTP'
Blockbuster book lays out the first 20 years of the Smartphone Wars
Symbian's David Wood bares all. Not for the faint hearted
Bonking with Apple has POUNDED mobe operators' wallets
... into submission. Weve squeals, ditches payment plans
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Protecting users from Firesheep and other Sidejacking attacks with SSL
Discussing the vulnerabilities inherent in Wi-Fi networks, and how using TLS/SSL for your entire site will assure security.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.