nii unlicensed national information infrastructure
nii unlicensed national information infrastructure
无牌国家信息基础设施
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Unlicensed National Information Infrastructure (U-NII) devices today operate in 555 megahertz of spectrum in the 5 GHz band, and are used for short range, high speed wireless connections including Wi-Fi enabled local area networks and fixed outdoor broadband transceivers used by wireless Internet service providers to connect smart phones, tablets and laptops to the broadband network.
ENGADGET: FCC proposal hopes to grow WiFi spectrum by 35 percent, reduce hotspot congestion