5 G: still poorly defined uses

In the CTIA keynotes, principal annual event that brought together the US mobile operators from 7 to 9 September in Las Vegas, speakers mainly spoke of futuristic applications, or claimed emergency extension of the spectrum to provide new networks to make those dreams reality. This is the case of Meredith Attwell Baker, President and CEO of CTIA, which, in his opening speech, said that US carriers would need hundreds of megahertz of additional spectrum to meet the demand of the next mobile decade. But on Thursday, when asked to entertainment mogul Mark Cuban, founder of Broadcast.com and franchise owner of basketball's Dallas Mavericks, what the needs of wireless mobility, he replied without hesitation: "There there is currently no very consumer broadband "applications. In other words, the current mobile applications do not require a sustained and uninterrupted flow of 100 Mb / s (bits per second).

In fact, smartphones mainly used for texting, consultation of social media and playing videos, applications that do not justify these performance continuously. In addition, the IoT is developing rapidly, but most of the time, speed needs are less important than those of mobile. "Considering the current context, it appears difficult for industry to seek an extension of the spectrum or to sell 5G to consumers," the tycoon said. "It changes the idea that users are their bandwidth requirements." Mark Cuban does not doubt that a future application justify a 100 Mb / s throughput on mobile or other device. Eg autonomous cars and telemedicine. But areas such as remote robotic surgery that spoke Thursday CEO of Nokia, Rajeev Suri, are still at the stage of speculation. Certainly one thing that no one expected, invented by a 12 year old child, could change that. "That is what we can speculate today," said Mark Cuban. therefore difficult to convince skeptics and develop new networks, as long as this issue remains unresolved. And carriers need to be more persuasive than ever.


Multiplication by 10 relays 5G

However, they already seem to have convinced Tom Wheeler, president of the Federal Communications Commission (FCC), which pushes the agency to open a millimeter wave spectrum with 5G services. "But how 5G is supposed to work, especially at these frequencies, ad many debates to come," said FCC chairman at a conference at CTIA. For example, the 5G should be based largely on the ultra-dense cell relays that take up less space than the current towers, but in much greater numbers. "Today there are 200,000 cell towers in the United States, and it would take many millions to 5G," said Tom Wheeler. However, very often, urban communities are reluctant to install new cell relay. Moreover, the relay will not only more numerous, they are also closer to the places where people live and work users. The FCC is trying to define a common approval process, but local authorities will always remain masters of the decision.

 Meanwhile, companies that develop 5G networks know they have their work cut out for it. To help carriers prepare for the next generation mobile, they work on intermediate technologies such as 4.5G, between 4G and 5G. At the CTIA, the CEO of Nokia, Rajeev Suri, said his company would start selling what he called the 4.5G Pro later this year. "This product will allow service providers to combine up to five frequency bands to deliver speeds up to 1Gbps, with less latency than current LTE networks," he said. Although 5G standard does not yet exist, operators can use the G Pro 4.5 for testing a range of new applications, including those that require more bandwidth, machine lower latency and better communication machine " added the CEO of Nokia. In the end, if the carriers take the game, and if subscribers begin to use these transition networks, 5G could happen in 2020 with some applications already ready for use.


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