Samsung Unveils 6G Research Findings and 6G Spectrum White Paper
Samsung Electronics had released a white paper outlining its 6G vision in July 2020
Samsung Electronics has released a white paper outlining the company’s vision for securing global frequency bands for future 6G technology.
The paper, titled “6G Spectrum: Expanding the Frontier,” examines ways to obtain the spectrum needed to realize the company’s 6G vision outlined in a white paper released 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. “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.”
According to Samsung Electronics, 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 characterized by fast communications and large amount of data. 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.
The South Korean provider also stresses 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 super-fast data rate support,” Samsung said.
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. He also 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.
Samsung is also highlighting the results of its research on some of the 6G candidate technologies – specifically on sub-THz band communications, reconfigurable intelligent surface (RIS), cross-duplex (XDD), full-duplex, compensation nonlinearity based on artificial intelligence (IA-NC) and energy saving based on AI (AI-ES).
Sub-THz is considered as a candidate spectrum for 6G communications, which should support data rate up to 1 terabit per second (Tbps).
“RIS can improve beam sharpness and can steer or reflect the wireless signal in a desired direction through the use of 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 fourfold and beam steering range up to 1.5x.
Samsung also noted that 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.
With full duplex, data transmission and reception can take place simultaneously using the same frequency so data speed increases up to two times, while AI-NC uses AI at the receiver to compensate for signal distortion caused by the non-linearity of a transmitter’s power. amplifier and, therefore, can significantly improve the coverage and quality of high-speed data signals.
Additionally, 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, Samsung said.