Feeds

Tokyo 250Mbps mobile supernetwork speeds into life

Did you see it? There it goes again....

The essential guide to IT transformation

Japan's largest operator has built a mobile network offering massive download speeds of 250Mbps.

NTTDoCoMo's network near Tokyo is only a test, but the operator expects to complete development of the technology next year. Commercial networks could follow soon after. It's pushing technical standards to the limit in magicking out the 250Mbps speed, although it claims speeds could in theory reach 300Mbps. Upstream data can be transmitted on the network at up to 75Mbps.

The network is based on long-term evolution (LTE), an enhancement of 3G and HSDPA which is using four multiple-input multiple-output (MIMO) antennae. It's a lot faster than current networks - HSDPA offers just 14Mbps downstream while 3G provides a mere 384Kbps. Both those figures are theoretical speeds - actual experiences have been far slower.

3G is available across the majority of the UK, but HSDPA is still much more limited.

As well as providing extra bandwidth, LTE has other benefits. It should provide less delay than 3G and it's more spectrally efficient, meaning it'll save operators like NTT a yen or two. It also works over both 2G and 3G frequencies.

Before it's released commercially, a range of issues have to be tested, including the ability of users to roam between base stations without losing the call.

NTT plans to give more details of its network to the Americans at a trade show on 1 April. It has dubbed LTE as both "Super 3G" and 3.9G - which looks set to cause confusion, as HSDPA has also been called Super 3G. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
6 Obvious Reasons Why Facebook Will Ban This Article (Thank God)
Clampdown on clickbait ... and El Reg is OK with this
So, Apple won't sell cheap kit? Prepare the iOS garden wall WRECKING BALL
It can throw the low cost race if it looks to the cloud
EE fails to apologise for HUGE T-Mobile outage that hit Brits on Friday
Customer: 'Please change your name to occasionally somewhere'
Time Warner Cable customers SQUEAL as US network goes offline
A rude awakening: North Americans greeted with outage drama
We need less U.S. in our WWW – Euro digital chief Steelie Neelie
EC moves to shift status quo at Internet Governance Forum
BT customers face broadband and landline price hikes
Poor punters won't be affected, telecoms giant claims
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.