Abstract
Fifth Generation NTT DOCOMO announced that its joint fifth-generation (5G) outdoor trial with Ericsson achieved a maximum data transmission speed of over 4.5 Gb/s using the high-frequency 15-GHz spectrum band. This is the first phase of trials designed to pave the way for DOCOMO's deployment of a commercial 5G network by the Tokyo 2020 Olympic and Paralympic Games in July 2020. In a separate indoor 5G trial with Nokia Networks to verify beamforming, a technique for a more stable high-speed data transmission using exceptionally higher frequencies in the 70-GHz band, DOCOMO achieved data transmissions of over 2 Gb/s. DOCOMO also announced that it has agreed with Huawei and Mitsubishi Electric to conduct technical verifications of emerging 5G mobile communication technologies using various frequency bands, including lower than 6 GHz and extremely high frequencies called millimeter waves.
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