Feeds

China Mobile sees time-sliced evolution

Speedy 4G at Shanghai Expo

Providing a secure and efficient Helpdesk

Huawei and Motorola have been working with China Mobile to get a time-duplexed LTE network deployed at the Shanghai Expo, offering 20Mb/sec over cheap and cheerful spectrum.

The deployment is experimental and will only last as long as the Expo, but the companies involved have been demonstrating peak speeds of 80Mb/sec, with 24 simultaneous video streams for those who really, really, like mobile TV.

Long Term Evolution (LTE) is the preferred 4G wireless technology for GSM operators around the world, but the planned deployments (and the single existing one) all use Frequency Division Duplexing (FDD); one frequency for the uplink and a separate one for the downlink. That requires "paired" spectrum, and regulators around the world have been happy to parcel up frequencies that way, rather to the annoyance of the WiMAX crowd who'd like spectrum in big chunks instead.

Current WiMAX deployments use Time Division Duplexing - one frequency is used and the connection flips between sending and receiving.

There are advantages to TDD: devices only need one radio and asynchronous connections can be arranged, but the big difference is that unpaired spectrum is generally cheaper. In Sweden, for example, 100MHz of FDD spectrum at 2.6GHz sold for more than €200m, while 50MHz of unpaired spectrum suitable for TDD only raised €16.5m.

Motorola has been demonstrating that its solutions can roam between LTE networks using FDD and TDD, even managing a live handoff, and is supplying TDD-LTE dongles for the World Expo in Shanghai which kicked off yesterday.

Those dongles will be operating on an LTE network run by China Mobile, with Huawei providing the network infrastructure, and it's only a proof of concept that disappears with the Expo at the end of October.

But assuming the technology works it will demonstrate how LTE can push into the spectrum previously thought of as the exclusive preserve of WiMAX - as though more nails were needed for that particular coffin. ®

Security for virtualized datacentres

More from The Register

next story
TEEN RAMPAGE: Kids in iPhone 6 'Will it bend' YouTube 'prank'
iPhones bent in Norwich? As if the place wasn't weird enough
Consumers agree to give up first-born child for free Wi-Fi – survey
This Herod network's ace – but crap reception in bullrushes
Crouching tiger, FAST ASLEEP dragon: Smugglers can't shift iPhone 6s
China's grey market reports 'sluggish' sales of Apple mobe
Sea-Me-We 5 construction starts
New sub cable to go live 2016
New EU digi-commish struggles with concepts of net neutrality
Oettinger all about the infrastructure – but not big on substance
PEAK IPV4? Global IPv6 traffic is growing, DDoS dying, says Akamai
First time the cache network has seen drop in use of 32-bit-wide IP addresses
EE coughs to BROKEN data usage metrics BLUNDER that short-changes customers
Carrier apologises for 'inflated' measurements cockup
Comcast: Help, help, FCC. Netflix and pals are EXTORTIONISTS
The others guys are being mean so therefore ... monopoly all good, yeah?
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.