A group of researchers from the University of Washington has developed a technology that leverages a known effect but until now had not been applied with much success. His system, called Passive Wi-Fi, can apply backscattering ( backscatter ) of normal WiFi signals to create specific channels that could be used for IoT devices.
Although the name is a bit over- the transmissions are not fully leveraging pasivas- yes transmissions that perform other devices around to deliver information at rates that reach 11 Mbps. The result: a standard especially efficient.
Ultra efficiency for the Internet of Things
The developers of this technology indicate that consuming 10,000 times less energy than conventional WiFi components, which enable the use of these - and Bluetooth wireless connections not, for example in a new class of devices that could provide them the advantages of these transmissions for example in the field of security and encryption.
Previous developments in this regard as BackFi -developed by Stanford University achieved rates of 5 Mbits per second, but this new development increases these rates to 11 Mbps ** and has a range of more than 30 meters **.
The idea of this type of solution is not to enhance our wireless communications in the home - that is the purpose for example of the new types of access, as Halow -, but to take advantage of that connectivity to other embedded and devices segment IoT can communicate with the cloud autonomously, without using gateways like a smartphone or a PC / laptop to make these data transfers.