The days of waiting for smartphones to upload video may be numbered thanks to Rice University researchers who have invented a new "full-duplex" technology allows wireless devices like phones and tablets to both "talk" and "listen" to wireless cell towers on the same frequency something that requires two frequencies today. people may see this when carriers upgrade to 4.5G or 5G in just a few years.
"How is full-duplex possible?
To explain why full-duplex was long thought impossible for wireless networks, Sabharwal uses the analogy of two people standing far apart inside an otherwise empty arena. If each shouts to the other at the same time, neither can hear what the other is saying.
The easy solution is to have only one person speak at a time, and that's what happens on two-way radios where only one person may speak at a given time. Phones achieve two-way speech by using two different frequencies to send and listen.
"How is full-duplex possible?
To explain why full-duplex was long thought impossible for wireless networks, Sabharwal uses the analogy of two people standing far apart inside an otherwise empty arena. If each shouts to the other at the same time, neither can hear what the other is saying.
The easy solution is to have only one person speak at a time, and that's what happens on two-way radios where only one person may speak at a given time. Phones achieve two-way speech by using two different frequencies to send and listen.
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