Licensed Wi-Fi Technology Aims to Improve Capacity and Reduce Coexistence Problems
New research published in the IEEE Spectrum highlights that Wi-Fi users might be able to boost their capacity when the network get congested by utilizing spectrum from the licensed LTE bands without interfering with LTE users. The project, which is dubbed WiFi-Lic to refer to the use of licensed spectrum, is led by Shahid Mumtaz, a wireless researcher at the Instituto de Telecomunicações in Portugal. The technique implements a cognitive radio technology that allows the Wi-Fi transmitter to scan the LTE licensed bands every millisecond for free channels that are available to use. Once a channel is identified, the Wi-Fi user can hop into the licensed spectrum and start using it. The Wi-Fi user then hops off the channel when it finishes transmitting or when it detects a licensed LTE user accessing the channel.
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