The paper, titled “6G Spectrum: Expanding the Frontier,” talks about how to get the spectrum needed to realise the Samsung’s 6G strategy, which was first announced in a white paper released in July 2020.
“We have started on our journey long ago to understand, develop and standardize the 6G communications technology,” said Sunghyun Choi, Executive Vice President and Head of the Advanced Communications Research Center at Samsung Research. “We are committed to taking the lead and sharing our findings to spread our vision to bring the next hyper-connected experience to every corner of life.”
To support new services like high-fidelity mobile holograms and genuinely immersive extended reality (XR), which are characterised by ultra-high speed communications and massive amounts of data, 6G would require spectrum with ultra-wideband contiguous bandwidth ranging from hundreds of MHz to tens of GHz. Demand for more coverage is also increasing. Samsung advises that all accessible bands for 6G be considered, ranging from low-band under 1 GHz to mid-band in the 1-24 GHz area and high-band in the 24-300 GHz range.
Samsung also highlights its research findings on some of the 6G candidate technologies, including sub-THz band communications, reconfigurable intelligent surface (RIS), cross division duplex (XDD), full duplex, artificial intelligence (AI)-based nonlinearity compensation (AI-NC), and AI-based energy savings, along with the release of the 6G spectrum white paper (AI-ES).
With the use of a metamaterial surface, RIS can improve beam sharpness and steer or reflect wireless signals in the desired direction. It can reduce high-frequency signal penetration loss and obstruction, such as mmWave. Samsung’s RIS lens technology increased signal strength by four times and beam steering range by 1.5 times.
By allowing continuous uplink transmission in a tiny amount of the system bandwidth, XDD can improve the propagation distance of uplink signals in TDD systems by up to two times. As a result, XDD can significantly improve the coverage of TDD systems commonly employed in high-frequency bands. At the base station, Samsung exhibited its basic technology, self-interference cancellation.
On May 13, 2022, Samsung expects to unveil more details and conclusions from its 6G research during the company’s first Samsung 6G Forum.