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Siemens IEEE802.11 User Manual

Page 26

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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.