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  • They say 5G is going to completely change our livesfrom as simple to gaming, to

  • driving,to as complex as medical care.

  • This shift will be a once in a decade upgrade for our wireless systems.

  • Now, that all sounds great but what is it and when can I get it?

  • Well, there's a brand new, second generation, cellular module from the current leading chip

  • company, Qualcomm that boasts the almighty power of

  • 5G speeds for your phone.

  • Except, we all don't exactly have 5G phones yet, nor a 5G mobile network.

  • However, this might be the year all that changes.

  • If you're just being brought up to speed, 5G, is known as the fifth generation of wireless

  • network communication.

  • Every time the technical rules that define the inner workings of cellular networks changes,

  • we get a newgeneration,” or “G” of technology, meaning to reap the benefits

  • people have to buy whole new phones, and carriers will need to install new transmission equipment

  • to deliver the speeds they promised.

  • When we got 1G it was for voice calls only, but then 2G gave us text messages, 3G added

  • that multimedia support that we can't imagine being without, like vidchats and faster speeds,

  • and now we have 4G – which has all the features of 3G BUT an added bump of speeds from 14

  • Mbps to 100Mbps which changed the game.

  • Now we have video chats in HD, HD mobile TV, and live streamed apps But this next one is

  • gonna be big.

  • 5G is anticipated to give users the fastest connectivity they've ever experienced.

  • Its thought to be so fast it'd compete with our current fibre optic cables we have in

  • our homes, and about ten to a hundred times faster than the phone you currently have in

  • your hand.

  • But other than the major benefits of downloading “8K” videos in seconds, and using VR and

  • AR seamlessly (goodbye buffering)why does the world want data coming in so fast?

  • Well, 5G connectivity promises reduced latency, or lag time, to practically zero.

  • Meaning devices can communicate with each other in nearly real-time.

  • We're talking about major improvements in the responsiveness in devices that use sensors

  • to make important decisions; like self-driving cars that need to suddenly brake, or industrial

  • robots that can be sent to hazardous areas and be controlled remotely from anywhere in

  • the world or better yet, anything in the healthcare field.

  • From telemedicine, precision surgical robots, to remote surgery, or even virtual physical

  • therapy sessions.

  • All this without any data slow down.

  • But wait, how does any of this work?

  • Well, 5G systems will run on smaller what they call, cell sites, that divide their territory

  • into different sections.

  • Then, exchanges between cell sites and devices are made with encoded data,through radio waves,

  • called OFDM, . This encoding isn't much different from

  • what 4G LTE uses, but the frequencies they use within the spectrum are.

  • Right now the low-band spectrum that 4G LTE travels on is overly crowded and therefore

  • we can only expect speeds up to 2Gs.

  • Which, by the way, doesn't seem too bad running on Verizon visible for only $40/month,

  • but we can get that more later on.

  • 5G can currently travel on a couple of kind of airwaves.

  • One low-band frequency and one high-frequency.

  • The plans are for low-band frequency 5G to operate through 4G cell sites that companies

  • already have in place.

  • But the encoding will be more flexible and use a bigger channel size to get up to 50

  • percent better speeds than LTE.

  • This isn't too bad.

  • But since we want the multi-gigabit, ultra-fast, speeds, we're going to use higher frequencies

  • on the millimeter wave spectrum.

  • Now it slightly varies, but millimeter waves are signals estimated to be above 24GHz or

  • 30GHz range where there's enough spectrum available to create big channels for very

  • high speeds.

  • But what researchers have been struggling with is the fact that these wavelengths are

  • easily blocked and can only go very short distances.

  • So a new infrastructure is needed.

  • That's why we have to get the small cell sites.Hundreds, if not thousands of lower-power

  • base stations (outputting only 2-10 watts each)will have to be built in and around city

  • homes to keep the connectivity in place.

  • There are select places around the U.S. that actually already have some of them, BUT we

  • still need our devices to upgrade to get the speeds we want.

  • This is where the Qualcomm chip comes in.

  • Qualcomm is a wireless chip maker and they've been the forefront of advancements in chip

  • technology since the 3G era.

  • Their new one, creatively called Snapdragon X55 5G , is a millimeter wave modem that would

  • run along their new millimeter wave antenna the QTM525..

  • The idea is that these modules will help smartphones connect to the new and improved network of

  • 5G AS WELL AS stay connected to the previous “g's” 2 through 4.

  • They anticipate that phone makers will embed three or four modules in their devices, so

  • the device always gets a signal from one module even if the others are blocked by something

  • like your hand.And Qualcomm is not the only one, there are other brands that are in the

  • works to make 5G happen for the consumer market.

  • So, for us to really reap the benefits of this all-powerful 5G speed.

  • The whole infrastructure needs to change.

  • You can't have the 5G phone without the 5G network, and you can't have the 5G network

  • until you get the mini cell towers, but companies are making massive strides.

  • Most of the phones and networks are planning to launch at the end of 2019.

  • So keep your eyes peeled, And your phones ready to throw out

They say 5G is going to completely change our livesfrom as simple to gaming, to

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A 5G World Is on the Horizon, But How Will It Work?

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    林宜悉 posted on 2020/04/04
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