米連邦通信委員会（FCC）が5.9Ghz帯をC-V2Xに開放決定 |
[ ITS/CASE&MaaS ITS海外情報 ] 2020年11月28日 |
米連邦通信委員会（FCC）は11月18日従来車車間通信のためDSRC(専用狭域)通信に割り当てられていた5.9Ghz帯の一部をC-V2X(*Cellular-Vehicle-to-Everything）に割り当てることを決定した。(*)セルラー通信を使ってコネクテッドカーを実現するための技術を総称
この決定については、自動車、ITS業界から強い反対(*2)があり、またWifi業界からは同帯域がDSRCにほとんど活用されてないとして解放の要請が寄せられていた。
この決定により、5.9 Ghz帯を中国に続き米国がC-V2Xに開放することになった。EUも現在検討中で、日本は来年度中に方針を決定する予定。(下記資料出所 愛知ITS協議会会員セミナー20201127)
(*2)
Anger as FCC votes to slash 5.9GHz spectrum for transportation safety by over half
BY TOM STONE ON NOVEMBER 18, 2020CONNECTED VEHICLES
https://www.traffictechnologytoday.com/news/connected-vehicles-infrastructure/anger-as-fcc-votes-to-slash-5-9ghz-spectrum-for-transportation-safety-by-over-half.html
The connected vehicle community in the US reacted angrily today as the FCC (Federal Communications Commission) backed the intentions outlined by its chairman Ajit Pai last month, and voted to give away more than half of the communication spectrum, reserved for the last 20 years for transportation safety, to unlicensed wi-fi.
Specifically, the new band plan designates the lower 45 megahertz (5.850-5.895 GHz) for unlicensed uses and the upper 30 megahertz (5.895-5.925 GHz) for enhanced automobile safety using cellular vehicle-to-everything (C-V2X) technology. This also signalled the end of the era of DSRC (dedicated short range communication) which has long been a key part of V2X testing in the USA.
An FCC statement read: "Although the Commission designated DSRC as the technology standard for ITS services over 20 years ago, DSRC has not been meaningfully deployed, and this critical mid-band spectrum has largely been unused for decades. Today's action therefore begins the transition away from DSRC services - which are incompatible with C-V2X - to hasten the actual deployment of ITS services that will improve automotive safety.
"The new rules also will improve automotive safety by reserving the upper 30 megahertz of the band for Intelligent Transportation System (ITS) services and designating C-V2X as the technology standard for safety-related transportation and vehicular communications."
