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5G is to IoT, as 4G is to smartphone

Posted: 08 Oct 2015     Print Version  Bookmark and Share

Keywords:Dresden University of Technology  4G  5G  IoT  smartphone 

I objected that what about cars traveling at 55mph and he broke out in a big smile, as if I had fallen into a well-laid trap.

"Yes, but they are all traveling at about the same speed, so relative to each other they still need 1ms latency to communicate effectively, the first car sending a 1ms signal to the one behind that it its braking, the that one sending a signal to the one behind it and so one. All you need is a guaranteed 1ms," Fitzek said.

Fitzek insists that all we have to do to meet 5G specifications, is achieve 1ms latency no matter how far the signal travels, plus insure that even the smartest hacker on the planet cannot crack its encryption. To achieve the latter, without violating the former, is a tall order, according to Fitzek, but he has had a legion of graduate students trying out his ideas for over a decade and he believes he has it licked.


Key technologies using cooperation strategies and network coding in order to improve reliability, throughput, delay, security, and complexity and energy consumption define 5G. (Source: TU Dresden, used with permission)

During that decade, his students has spun-off five companies now perfecting different aspects of the coming 5G revolution. The concepts involved are mathematically complex, yet fast to execute. They are also energy efficient, yet reliable and ultra-secure, he said. But he isn't letting the whole cat out of the bag yet. He did give me a millisecond glimpse inside the bag, and this is what I saw.

Network slicing combined with cognitive computing in each base station, local storage in each base station, local networking in every base station plus random-number based encryption coding and recoding during transmission that can only be decoded by the intended recipients. The tools to do this will be software defined networks, software defined storage and software defined radio to add flexibility, to reorder packets, to decode even multiple-encoding data jaunts, and most important, all in under 1ms.

- R. Colin Johnson
  EE Times

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