Feeds

WTF is... 4G

Not LTE, for starters...

High performance access to file storage

What next?

LTE Advanced can aggregate up to five LTE radio channels into one – so if given 20MHz-wide channels, it could treat them as a single 100MHz-wide channel. LTE Advanced also opens up more possibilities for changing cell infrastructure, such as subdividing cells, and supports more antennæ in MIMO configurations – eight downstream and four up, as opposed to four down and one up. Devices can be used while moving at higher speeds – right up to 500km/h.

4G, really?

Some way to go before we get true 4G

But at the same time, LTE Advanced includes some of the advantages of CDMA. While it can use large chunks of spectrum for high speeds when required, it can also efficiently scale down to much smaller slices for better bandwidth efficiency – a strength of IS-95 and CDMA2000.

Suitably-equipped phones will be able to talk to both LTE Advanced and CDMA2000 networks – and conceivably WiMax as well, with which LTE Advanced shares its OFDMA multiplexing algorithm.

It's more or less inconceivable that anything else will replace LTE Advanced as the official standard for 4G mobile phones now, although WiMax 2 will have a role too. Which only leaves one big question: what will be the basis of 5G? ®

4G in the UK

Ofcom will be auctioning the LTE spectrum – 800MHz and 2.6GHz – next year, later than originally anticipated. The reason for the delay: UK operators were keen to see how much they can squeeze out of 3G networks before deciding how much to spend on 4G spectrum.

But punters – expecting better performance from 4G phones and seeing how many, more advanced handsets are appearing in other parts of the world – will demand 4G handsets here. Competition-sensitive carriers will eventually supply that demand.

But not until 2015, some analysts believe, at which point the operators hope to have reached the limits of 3G technology - especially now Ofcom has allowed the use of 2G spectrum for 3G applications - and for 4G equipment to be rather cheaper than it is now.

SANS - Survey on application security programs

More from The Register

next story
Virgin Media so, so SORRY for turning spam fire-hose on its punters
Hundreds of emails flood inboxes thanks to gaffe
A black box for your SUITCASE: Now your lost luggage can phone home – quite literally
Breakfast in London, lunch in NYC, and your clothes in Peru
AT&T dangles gigabit broadband plans over 100 US cities
So soon after a mulled Google Fiber expansion, fancy that
AT&T threatens to pull out of FCC wireless auctions over purchase limits
Company wants ability to buy more spectrum space in auction
Google looks to LTE and Wi-Fi to help it lube YouTube tubes
Bandwidth hogger needs tube embiggenment if it's to succeed
Turnbull gave NBN Co NO RULES to plan blackspot upgrades
NBN Co faces huge future Telstra bills and reduces fibre footprint
NBN Co plans fibre-to-the-basement blitz to beat cherry-pickers
Heading off at the pass operation given same priority as blackspot fixing
NBN Co in 'broadband kit we tested worked' STUNNER
Announcement of VDSL trial is not proof of concept for fibre-to-the-node
prev story

Whitepapers

Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.