| 出典： U-NII 『フリー百科事典 ウィキペディア(Wikipedia)』 最終更新 8 December 2017, at 07:34 UTC、URL: https://en.wikipedia.org/wiki/U-NII The Unlicensed National Information Infrastructure (U-NII) radio band is part of the radio frequency spectrum used by IEEE-802.11a devices and by many wireless ISPs. It operates over four ranges: ... ● U-NII Low (U-NII-1): 5.150-5.250 GHz. Originally limited to indoor use only. ... ● U-NII Mid (U-NII-2A): 5.250-5.350 GHz. Both outdoor and indoor use, subject to Dynamic Frequency Selection (DFS, or radar avoidance). ... |
| DSRC/ITS | U-NII | U-NII Low | U-NII Mid |
| U-NII Upper | U-NII Worldwide | U-NII-1 | U-NII-2A |
| U-NII-2B | U-NII-2C | U-NII-2e | U-NII-3 |
| U-NII-4 | UNII | Unlicensed National Information Infrastructure | |