IEEE 802.11h-2003, or simply 802.11h, refers to a 2003 amendment added to the
IEEE 802.11
IEEE 802.11 is part of the IEEE 802 set of local area network (LAN) technical standards, and specifies the set of media access control (MAC) and physical layer (PHY) protocols for implementing wireless local area network (WLAN) computer commun ...
standard Standard may refer to:
Symbols
* Colours, standards and guidons, kinds of military signs
* Standard (emblem), a type of a large symbol or emblem used for identification
Norms, conventions or requirements
* Standard (metrology), an object th ...
for Spectrum and Transmit Power Management Extensions. It addresses 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
Power control, broadly speaking, is the intelligent selection of transmitter power output in a communication system to achieve good performance within the system.Guowang Miao, Jens Zander, Ki Won Sung, and Ben Slimane, Fundamentals of Mobile Data ...
(TPC) to the
802.11a
IEEE 802.11a-1999 or 802.11a was an amendment to the IEEE 802.11 wireless local network specifications that defined requirements for an orthogonal frequency-division multiplexing (OFDM) communication system. It was originally designed to support ...
PHY. It has since been integrated into the full IEEE 802.11-2007 standard.
Motivation
Wireless technology has been more and more popular and a lot of standards have been finalized over the past decade. This holds especially for
ISM bands
ISM or Ism may refer to:
Arts and entertainment
* '' Incredible Shrinking Man'', a film
* ''ISM'' (album), a 2012 album by Norwegian electronic music producer Savant
* ''Ism'' (film), a 2016 Indian Telugu-language action film starring Nandamuri ...
(Industrial, Scientific and Medical) which are unlicensed and free to use. The problem, however, is the coexistence between these heterogeneous wireless networks. To address the coexistence problems in those bands, the IEEE has started the 802.11h Working Group to make recommendations for better future coexistence. It addresses problems like interference with satellites and radar using the same 5 GHz frequency band.
See also
*
Channel allocation schemes
In radio resource management for wireless and cellular networks, channel allocation schemes allocate bandwidth (signal processing), bandwidth and communication channels to base stations, access points and terminal equipment. The objective is to ach ...
*
List of WLAN channels
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols, and equipment that does so is sold mostly under the trademark Wi-Fi. Other equipment also accesses the same channels, such as Bluetooth. The radio frequency (RF) spec ...
References
External links
The IEEE 802.11h-2003 StandardIEEE Task Group TGh
{{IEEE standards
H
Radio resource management