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"2017-02-06 21:10:47"
Everything You Need to Know About 5G
\\every new generation of wireless networks delivers faster speeds and more functionality to our smartphones one do you brought us the very first cell phones to deliver us text for the first time 3 do you brought us online and Forgy deliver the speeds that we enjoy today but as more users come online for D. networks have just about reached the limit of what they're capable of at a time when users want even more data for their smart phones and devices now we're headed toward 5 G. the next generation of wireless it will be able to handle 1000 times more traffic than today's networks and it'll be up to 10 times faster than 4 G. LTE just imagine downloading in HD movie in under a second and then let your imagination run wild 5 you will be the foundation for virtual reality autonomous driving the internet of things and stuff we can't even yet imagine but what exactly is a 5 G. network ngga truth as experts can't tell us what 5 G. actually as because they don't even know yet but right now there are 5 brand new technologies emerging as the foundation of 5 G. millimeter waves small cells massive my mo beamforming and full duplex first up technology number one millimeter waves your smartphone and other electronic devices in your home use very specific frequencies on the radio frequency spectrum typically those under 6 gigahertz but these frequencies are starting to get more crowded carriers can only squeeze so many bits of data on the same amount of radio frequency spectrum as more devices come online we're going to start to see slower service and more dropped connections the solution is to open up some new real estate so researchers are experimenting with broadcasting on shorter millimeter waves those the fall between 30 and 300 gigahertz this section of spectrum has never been used before for mobile devices and opening it up means more bandwidth for everyone but there is a cat's millimeter waves can't travel well through buildings or other obstacles and they tend to be absorbed by plants and rain to get around this problem will need technology number 2 small cell networks today's wireless networks allow large high powered cell towers to broadcast their signals over long distances but remember higher frequency millimeter waves have a harder time traveling through obstacles which means if you move behind one you lose your signal small cell networks would solve that problem using thousands of low power many base stations the space stations would be much closer together than traditional towers forming a sort of relay team to transmit signals around obstacles this would be especially useful in cities as a user move behind an obstacle his smartphone would automatically switch to a new base station in better range of his device allowing him to keep his connection next up technology number 3 massive Milo my most stands for multiple input multiple output today's Forgy base stations have about a dozen ports for antennas the handle all cellular traffic but massive my mo bay stations can support about 100 ports this could increase the capacity of today's networks by a factor of 22 or more of course massive Milo comes with its own complications today's cellular antennas broadcast information in every direction at once and all of those crossing signals could cause serious interference which brings us to technology number 4 beamforming beamforming is like a traffic signalling system for cellular signals instead of broadcasting in every direction it would allow base station to send a focus stream of data to a specific user this precision prevents interference and it's way more efficient I mean stations could handle more incoming and outgoing data streams at once here's how it works say you're in a cluster of buildings and you're trying to make a phone call your signal is ricocheting off of surrounding buildings and crisscrossing with other signals from users in the area a massive my mo bay station receives all of these signals and keeps track of the timing and the direction of their arrival it then uses signal processing algorithms to triangulate exactly where each signal is coming from and plots the best transmission route back through the air to each phone sometimes it'll even bounce individual packets of data in different directions off of buildings or other objects to keep signals from interfering with each other the result is a coherent datastream sent only to you which brings us to technology number 5 full duplex if you've ever used a walkie talkie you know that in order to communicate you have to take turns talking and listening that's kind of a drag today's cellular base stations have that exact same hold up a basic antenna can only do one job at a time either transmit or receive this is because of a principal caught reciprocity which is the tendency for radio waves to travel both forward and backward along the same frequency to understand this it helps to think of a way of like a train loaded up with data the frequency it's traveling on is like the train track and if there's a second train trying to go in the opposite direction on the same track you're going to get some interference up until now the solution has been to have the trains take turns or to put all the trains on different tracks were frequencies but you can make things a lot more efficient by working around reciprocity researchers have you silicon transistors to create high speed switches that hold the backward roll of these waves it's kind of like a signaling system that can momentarily reroute to train so that they can get past each other that means there's a lot more getting done on each track a whole lot faster we're still working out many of the Kinks with millimeter waves small cell networks mass of my mail beam forming and full duplex in fact all of 5 G. is still a work in progress it will likely include other new technologies to and making all of these systems work together will be a whole other challenge but if experts can figure that out ultrafast 5 G. service could arrive in the next 5 years //



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