Jan 26, 2021 16:07 JST

Source: NTT DOCOMO

DOCOMO and AGC Use Metasurface Lens to Enhance Radio Signal Reception Indoors
- New technology efficiently guides millimeter waves to target locations indoors -

TOKYO, Jan 26, 2021 - (JCN Newswire) - NTT DOCOMO, INC. and AGC Inc. announced that they have developed a prototype technology that efficiently guides 28-GHz 5G radio signals received from outdoors to specific locations indoors using a film-like metasurface lens that attaches to window surfaces. DOCOMO and AGC also conducted what is believed to be world's first successful trial to direct 28-GHz signals passing through a window to specific locations indoors as well as raise the strength of the signals.

 

 

 


Newly emerging 5G networks as well as 6G networks of the future are expected to use high-frequency radio waves, such as 28 GHz. Although high-frequency signals enable the realization of advanced communication standards, they are subject to high attenuation over long distances and their high directivity resulting in low diffraction (or weak bending around objects) generally limits their range to within the line of sight of the transmitting base station. Consequently, it is difficult for high-frequency radio waves to penetrate windows, and even if they do they are attenuated to the point of not being able to propagate sufficiently to establish wireless communication links indoors.

The new metasurface lens is made with an artificially engineered material featuring a large number of sub-wavelength unit cells arranged periodically on a two-dimensional surface. Elements arranged in various shapes on the metasurface substrate can be attached to a glass window to direct radio signals to specific points (focal points) indoors. It is believed that radio waves from an outdoor base station could be received on a window's broad surface and then efficiently propagated to specific focal points inside a building with the help of repeaters and reflectors.

The metasurface lens material is a transparent film that can cover virtually the entire inside surface of a window. The material has no effect on LTE and sub-6 band radio waves, so it can be used to improve indoor reception of 28 GHz radio signals without affecting the performance of legacy wireless frequencies.

The trial confirmed that the metasurface lens improves the power level of 28 GHz radio signals received at indoor focal points. The trial also confirmed the ability to control focal-point position as well as the ability to switch from single to dual focal points.

In addition, DOCOMO and AGC verified that structural design technology can be deployed to enable metasurface lenses to allow high-frequency radio signals to penetrate glass that has been coated for heat insulation.

DOCOMO and AGC have been developing transparent metasurface technology for use in solutions that not only improve access to high-frequency radio signals but also are aesthetically acceptable. The new metasurface lens incorporates DOCOMO's metasurface design technology and AGC's design and microfabrication technologies.

The prototype metasurface lens will be presented during DOCOMO Open House 2021, which will take place online this February 4 to 7.

Going forward, DOCOMO and AGC will continue to collaborate in the research and development of technologies for highly efficient and flexible 5G and 6G wireless communication.

About NTT DOCOMO

NTT DOCOMO, Japan's leading mobile operator with over 80 million subscriptions, is one of the world's foremost contributors to 3G, 4G and 5G mobile network technologies. Beyond core communications services, DOCOMO is challenging new frontiers in collaboration with a growing number of entities ("+d" partners), creating exciting and convenient value-added services that change the way people live and work. Under a medium-term plan toward 2020 and beyond, DOCOMO is pioneering a leading-edge 5G network to facilitate innovative services that will amaze and inspire customers beyond their expectations. https://www.nttdocomo.co.jp/english/.

About AGC Inc.

AGC Inc. is the parent company of the AGC Group, a world-leading glass solution provider and supplier of flat, automotive and display glass, chemicals, ceramics and other high-tech materials and components. Based on more than a century of technical innovation, the AGC Group has developed a wide range of cutting-edge products. The AGC Group employs some 55,000 people worldwide and generates annual sales of approximately 1.5 trillion Japanese yen through business in about 30 countries. For more information, please visit New windowhttps://www.agc.com/en/

Source: NTT DOCOMO
Sectors: Wireless, Apps

Copyright ©2022 JCN Newswire. All rights reserved. A division of Japan Corporate News Network.

Related Press Release


DOCOMO Concludes a Business Alliance Contract with JGC Corporation to Develop Platforms for DX at Large-scale Plant Construction Sites
April 14 2022 17:39 JST
 
DOCOMO Launches Carbon-neutrality Website to Encourage Climate Action
April 05 2022 08:08 JST
 
DOCOMO's Okayama Building to be Powered 100% with Renewable Energy
March 29 2022 15:45 JST
 
JTOWER and DOCOMO Agreed to the Master Transaction Agreement for Infra-Sharing of Existing Telecommunications Towers
March 25 2022 17:20 JST
 
NTT Group to Donate US $2.5 Million for Humanitarian Aid in Ukraine and Neighboring Countries
March 11 2022 17:30 JST
 
NTT DOCOMO, NTT Com, NTT Network Service Systems Laboratories and NTT Network Innovation Center Achieve Japan's First ETSI ZSM-based End-to-End Orchestration of 5G Network Slicing
March 11 2022 16:06 JST
 
NTT DOCOMO and NEC are Onboarding 5G SA Core Using Energy-efficient and High-performance AWS Cloud Computing Services
March 01 2022 14:47 JST
 
DOCOMO Opens vRAN Verification Facility to Global Mobile Operators
February 28 2022 17:01 JST
 
DOCOMO to Roll Out IPv6 Single-stack Support Beginning Feb. 1
January 31 2022 14:06 JST
 
DOCOMO to Participate Virtually in MWC Barcelona 2022
January 26 2022 15:01 JST
 
More Press release >>

Latest Press Release


More Latest Release >>