IEEE 802.11h-2003

IEEE 802.11h-2003, or just 802.11h, refers to the amendment added to the IEEE 802.11 standard for Spectrum and Transmit Power Management Extensions. It solves problems like interference with satellites and radar using the same 5 GHz frequency band. It was originally designed to address European regulations but is now applicable in many other countries. The standard provides Dynamic Frequency Selection (DFS) and Transmit Power Control (TPC) to the 802.11a MAC. It has been integrated into the full IEEE 802.11-2007 standard.

IEEE 802.11 is a set of IEEE standards that govern wireless networking transmission methods. They are commonly used today in their 802.11a, 802.11b, and 802.11g versions to provide wireless connectivity in the home, office and some commercial establishments.

pectrum and Transmit Power Management Extensions

DFS ensures that channels containing radar are avoided by an Access Point (AP) and energy is spread across the band to reduce interference to satellites. TPC ensures that the average power is less than the regulatory maximum to reduce interference to satellites.

ee also

IEEE 802.11a High-speed Physical Layer in the 5 GHz band

External references

* [http://standards.ieee.org/getieee802/download/802.11h-2003.pdf The IEEE 802.11h-2003 Standard]
* [http://grouper.ieee.org/groups/802/11/Reports/tgh_update.htm Status of the project 802.11h] IEEE Task Group TGh
* [http://grouper.ieee.org/groups/802/11/QuickGuide_IEEE_802_WG_and_Activities.htm Quick Guide to IEEE 802.11 WG]
* [http://www.networkworld.com/news/tech/2004/071904techupdate.html 802.11h helps WLANs share spectrum] Michael See "Network World" July 19, 2004