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Samsung Unveils 6G Spectrum White Paper and 6G Research Findings – Samsung Newsroom UK

By on May 8, 2022 0

The company’s vision and plans to prepare for the next generation communication system

Samsung Electronics today released a white paper outlining the company’s vision for securing global frequency bands for 6G, the next-generation communications technology. The document, titled “6G Spectrum: Expanding the Frontier”,1 discusses ways to obtain the spectrum needed to achieve the company’s 6G vision introduced in a white paper published earlier in July 2020.

“We started our journey a long time ago to understand, develop and standardize 6G communication technology,” said Sunghyun Choi, executive vice president and head of advanced communications research center at Samsung Research.2 “We are committed to taking the lead and sharing our discoveries to spread our vision to bring the next hyper-connected experience to every corner of life.”

6G spectrum: pushing the boundaries

6G would require spectrum with ultra-wide contiguous bandwidth ranging from hundreds of MHz to tens of GHz to enable new services such as high-fidelity mobile holograms and truly immersive extended reality (XR) that are characterized by communications ultra-fast and a large amount of data. There is also a growing demand for greater coverage. In response to these requirements, Samsung proposes to consider all the bands available for 6G, from the low band under 1 GHz, to the medium band in the range 1-24 GHz and the high band in the range 24-300 GHz.

This also highlights the importance of securing new bands for commercial 6G deployments, as 5G networks will still be operational when the 6G rollout begins. The midband in the 7-24 GHz range is a candidate that can support faster data speed and reasonable coverage. The sub-terahertz (sub-THz) band in the 92–300 GHz range is being considered for ultra-fast data rate support. The white paper also mentions refarming existing bands used for 3G, 4G and 5G networks to 6G operation as another way to get all the spectrum needed for 6G. In addition, he notes that research on prospective regulations and technologies on spectrum use is essential to provide efficient and flexible support of 6G and other services with limited spectrum.

Recent findings on 6G candidate technologies

Along with the release of the 6G Spectrum White Paper, Samsung is also highlighting its research findings on some of the 6G candidate technologies – specifically on THz sub-band communications, reconfigurable intelligent surface (RIS), cross-duplex (XDD), full duplex, intelligence-based non-linearity compensation (AI) (AI-NC) and AI-based power saving (AI-ES).

Sub-THz is considered a candidate spectrum for 6G communications, which is expected to support data rate up to 1 Terabit per second (Tbps), 50 times faster than 20 Gbps of 5G networks. Samsung has successfully demonstrated a data rate of 6 Gbps at a distance of 15 meters indoors in June 2021, and 12 Gbps at a distance of 30 meters indoors and 2.3 Gbps /s at a distance of 120 meters outdoors the following year.

RIS can improve beam sharpness and can steer or reflect the wireless signal in a desired direction using a metamaterial surface. It can reduce the penetration loss and blockage of high frequency signal, for example, mmWave. Samsung has demonstrated that its RIS lens technology can increase signal strength by four times and beam steering range by 1.5 times.

XDD can improve the uplink signal propagation distance up to two times in the TDD system by enabling continuous uplink transmission in a small part of the system bandwidth. Therefore, XDD is able to significantly improve the coverage of the TDD system often used in high frequency bands. Samsung demonstrated its core technology, self-interference cancellation at the base station.

With full duplex, data transmission and reception can take place simultaneously using the same frequency, so data speed increases up to twice. Samsung conducted a successful full-duplex test in the mmWave band with a base station and terminal 100 meters apart, demonstrating self-interference cancellation of over 114 dB and improved 1.9 times the data rate.

AI-NC uses AI at the receiver to compensate for signal distortion caused by non-linearity of a transmitter’s power amplifier and therefore can significantly improve data signal coverage and quality High Speed. Samsung demonstrated a 1.9x improvement in coverage for high-speed uplink data and a 1.5x improvement in transmission speed for a given coverage.

AI-ES capitalizes on AI to minimize power consumption at the base station by adjusting parameters controlling power on/off of selected cells based on traffic load, without affecting network performance . In a replicated simulation based on real base station data, Samsung applied AI-ES to demonstrate over 10% power savings.

Samsung plans to share more details and the results of its 6G research at the company’s first Samsung 6G Forum (samsung6gforum.com) scheduled for May 13, 2022.

For more information on the “Samsung Tech Forum”, please visit the Samsung Research website at research.samsung.com/events.

1 Samsung’s 6G Spectrum White Paper is available for download at search.samsung.com.

2 Samsung Electronics’ advanced R&D center, which leads the development of future technologies for its Device eXperience division