NTT DOCOMO and JR EAST Verify Stable 5G Communication aboard ALFA-X Shinkansen Test Train Running at 360km/h
DOCOMO has been working to confirm the feasibility of 5G communication in high-speed environments since 2017. For the newly announced trials, experimental equipment conforming to international standard and specifications established by the 3rd Generation Partnership Project (3GPP(2)) was put through various trials conducted for the first time in Japan aboard ALFA-X running at 360km/h.
In general, communication quality at high speed becomes unstable due to the influence of direct-path obstructions and the Doppler effect. This is especially true in the case of 5G, which uses relatively high frequency bands that are more sensitive to physical obstructions and the Doppler effect compared to lower frequency bands used in legacy mobile communication networks.
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Source: NTT DOCOMO
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