Thomas Kunz
Systems and Computer Engineering
165
802.11 Layers and Functions
nPLCP Physical
Layer Convergence Protocol
–clear
channel assessment signal (carrier sense)
nPMD Physical
Medium Dependent
–modulation,
coding
nPHY Management
–channel
selection, MIB
nStation Management
–coordination
of all management functions
nMAC
–access
mechanisms, fragmentation, encryption
nMAC Management
–synchronization,
roaming, MIB, power management
PMD
PLCP
MAC
LLC
MAC Management
PHY Management