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(1) (UNique Ingredient Identifier) See healthcare IT.

(2) (Unlicensed-National Information Infrastructure) A part of the national spectrum sanctioned by the FCC in 1997 that does not require a license for short-range wireless use. One of the purposes for U-NII was to enable schools, libraries and healthcare organizations in rural areas to more easily connect to the Internet and private, high-speed networks.

Radar Has Priority
U-NII channels 52 through 140 (5.26-5.7 GHz) require transmitting devices to use dynamic frequency selection (DFS) to avoid conflicts with radar pulses. A DFS frequency must be clear of radar for one minute before using it, and if radar is detected on the current channel, the transmitter must switch to another channel, also free of radar for one minute. See ISM band and WiSA.

U-NNI BANDSIndoor/  MaxFrequency     Outdoor  PowerRange (GHz)   Usage    (mW)  DFS?

 5.150-5.250   In       50    no

 5.250-5.350   In/Out  250    yes

 5.470-5.725   In/Out  250    yes

 5.725-5.825   Out    1000    no
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References in periodicals archive ?
As stated, U-NII devices are unlicensed intentional radiators that operate in the frequency bands 5.
With the former, the U-NII and an expansion of the same principles to ultra wideband devices that would operate underneath many licensed services provide the obvious example.
Until new U-NII equipment is certified and meets revised FCC rules, the database solution will be employed to facilitate coordination between U-NII band device users and the FAA's TDWR sites.
Although proprietary terrestrial microwave networks have been in existence for many years, recent support for WiMAX and U-NII FWA systems in leading personal computer and network chipset solutions, combined with other industry efforts to standardize FWA networks, is likely to help expand the market, particularly in geographic regions without widespread availability of DSL or cable.
Mitsubishi, GaAs FET, PCS, GSM, CDMA, TDMA, W-CDMA, U-NII, MMDS, ITFS, AMPS, SMD, SMT, fixed wireless, microwave, RF, radio frequency.
With the U-NII system, consumers will benefit from the availability of high-bandwidth Internet services allowing simultaneous access to multi-media functions all over a single wireless Internet connection and broadband-on-demand at the click of a mouse.
11a, HiperLAN2, U-NII, and WLAN systems in Japan -- Performance, small size, broadband cited -- On-chip power detectors simplify design-in
The U-NII (Unlicensed National Information Infrastructure) band can be a very practical solution to the demands of CLECs, IXCs and ILECs either as the primary broadband access solution or a complement to existing wireline offerings.
The WT-2700 operates in the unlicensed FCC Part 15 U-NII Bands at 5.
While the first releases for AB-Access are for applications using the 5 GHz U-NII (Unlicensed National Information Infrastructure), 2.