A frequency switch has been created for 6G networks that do not interfere with satellites

Researchers have developed a frequency switch that will allow 6G networks to use broadband data transmission in the range above 100 GHz, while avoiding harmful interference to satellite systems. The work is published in the journal Communications Engineering. Researchers at Northeastern University’s Wireless Internet of Things Institute and the Caltech Jet Propulsion Laboratory have designed a system for sharing extremely high frequencies over 6G networks and scientific satellites. The development combines a hardware switching device and a program that tracks the location of passive sounding services. Sixth-generation (6G) wireless networks will combine mobile traffic with a higher-than-ever high-bandwidth transport channel, which the authors believe can be deployed in an almost unused frequency range above 100 GHz. However, a number of frequencies in this range are reserved for passive sounding services. These are satellites that use only high-sensitivity radio frequency sensors for Earth exploration, weather monitoring and radio astronomy. Interference created by communication networks will negatively affect such observations. The system, proposed by scientists, tracks the orbits of satellites and automatically switches frequency bands, thus preventing interference created by data transmission to passive operators. The hardware part of the created device is a stack of protocols with hardware acceleration, which generates a multiplexing waveform with orthogonal frequency division multiplexing. The device can operate in two bands 123.5-140 GHz and 210-225 GHz. Experimental installation. Source: Michele Polese et al, Communications Engineering To demonstrate the operation of the device, scientists have assembled a prototype that provides wide-format data transmission at Northeastern University. Scientists used NASA’s Aura satellite motion data to provide frequency switching as the satellite passed over the data network. The results of the experiment showed that the system functioned successfully without creating obstacles to scientific research. The developers note that the system they created is the first wireless system with a frequency above 100 GHz, which uses a stack of real-time protocols in two frequency bands, provides automated and dynamic spectrum sharing and adapts real-time line parameters.

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