Siemens IEEE802.11 - Manual (Page 26)

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 26 © Siemens, 2002
IEEE802.11h: Spectrum and
Transmit Power Management
n
TPC (Transmission Power Control)
– supports interference minimisation, power consumption reduction,
range control and link robustness.
– TPC procedures include:
• AP‘s define and communicate regulatory and local transmit power constraints
• Stations select transmit powers for each frame according to local and
regulatory constraints
AP 1
AP 2
AP 3
STA
n
DFS (Dynamic Frequency Selection)
– AP‘s make the decision
– STA‘s provide detailed reports
about spectrum usage at their
locations.