Siemens IEEE802.11 - Manual (Page 16)

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 16 © Siemens, 2002
IEEE802.11 Protocol Architecture
n
Station Management
– interacts with both MAC Management
and PHY Management
n
MAC Layer Management Entity
– power management
– handover
– MAC MIB
n MAC Entity
– basic access mechanism
– fragmentation
– encryption
n PHY Layer Management
– channel tuning
– PHY MIB
n
Physical Layer Convergence Protocol (PLCP)
– PHY-specific, supports common PHY SAP
– provides Clear Channel Assessment signal (carrier sense)
n Physical Medium Dependent Sublayer (PMD)
– modulation and encoding
MAC
Sublayer
PLCP Sublayer
PMD Sublayer
MAC Layer
Management
PHY Layer
Management
Station
Management
LLC = 802.2
MAC
PHY