U-NII

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U-NII

(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 ?
For more information about the WiSA Association, visit wisaassociation.
The reference design is available to all WiSA Association members and is compliant with the current version of the WiSA Compliance Test Specification (CTS).
Our members have been asking for a soundbar reference design to accelerate their WiSA-enabled product introductions and save months in development time and costs," said Jim Venable, president of the WiSA Association.
Participation in both groups is open to members of the WiSA Association and the activities pursued by each group may influence the WiSA Compliance Test Specification (CTS) as well as the technology roadmap.
The WiSA Association has gained significant momentum with the recent release of the industry's first Compliance Test Specification for interoperability and I expect our engagement with the Technical Advisory Committee and Special Interest Groups to be equally ground-breaking in driving additional areas of application for high-performance wireless audio.
The WiSA Association will be an exhibitor in sound room 6 at the CEDIA Expo, providing product demonstrations of the new soundbar and audio hub reference design as well as member companies' 2.
Bang & Olufsen has collaborated with Summit Semiconductor and the WiSA association in the development of the new standard.
About the WiSA Association Established in 2011 and headquartered in Sunnyvale, California, the Wireless Speaker & Audio (WiSA) Association is an industry group dedicated to bringing reliable, high- performance interoperable wireless audio products to the consumer.
There is an inflection point in the home theater market where having a robust wireless audio technology can address the inadequate audio quality in today's ultra-thin DTVs," said Jim Venable, president of the WiSA Association.
The WiSA Association is an industry group dedicated to promoting high performance wireless audio in the home theater market by delivering the industry's first interoperability specification and compliance testing programs for manufacturers of high-performance wireless speakers, DTVs, Blu-ray Disc players, and other consumer electronics (CE) devices.
The WiSA Association was founded to advance the adoption of wirelessly transmitted high-definition (HD) surround-sound audio in the home theater environment by establishing the industry's first interoperability specification and compliance testing programs for manufacturers of high-performance wireless speakers, DTVs, Blu-ray Disc players, and other consumer electronics (CE) devices.
Pioneer Corporation, SHARP Corporation, Silicon Image and Summit Semiconductor signed Letters of Intent to join the WiSA Association as Advisory Board members to promote interoperability of interference-free, wireless surround-sound audio across a wide range of consumer electronics devices.