UNII
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The Unlicensed National Information Infrastructure radio band is part of the radio frequency spectrum used by IEEE-802.11a devices and by many wireless ISPs. It operates over three ranges:
- UNII 1:
- 5.15-5.25 GHz. Sometimes referred to as UNII Indoor. Regulations require use of an integrated antenna.
- 5.25-5.35 GHz. Sometimes referred to as UNII Low. Regulations allow for a user-installable antenna.
- UNII 2: 5.47-5.725 GHz. Both outdoor and indoor 802.11a use.[citation needed]
- UNII 3: 5.725 to 5.825 GHz. Sometimes referred to as UNII / ISM due to overlap with the ISM band. Regulations allow for a user-installable antenna.
Wireless ISPs generally use 5.725-5.825 GHz.
UNII is an FCC regulatory domain for 5- GHz wireless devices. UNII power limits are defined by the United States CFR Title 47 (Telecommunication), Part 15 - Radio Frequency Devices, Subpart E - Unlicensed National Information Infrastructure Devices, Paragraph 15.407 - General technical requirements. Regulatory use in individual countries may differ.
The European HiperLAN standard operates in the UNII band.
[edit] Sources
- 15.07.2005, Heise: 5 GHz WLAN to be available all over Europe Citat: "...Today, the European Commission resolved in Brussels to regulate two blocks in the 5 GHz range (5150-5350 MHz and 5470-5725 MHz) for all of Europe..."
- Cisco: Glossary
[edit] See also
[edit] External links
- In the USA, CFR Title 47 Part 15 (revised in 2005) describes the regulation of the UNII bands.
