In a wireless Local Area Network (WLAN) system, a hierarchical
architecture is provided which employs a protocol which divides protocol
processing functions between a plurality of substantially identical
access elements in which reside time-critical protocol functions, such as
acknowledgment and retransmission of packets, and a centralized control
element which provides control and management functions related to
dynamic configuration of wireless networks, such as processing of network
management messages (e.g., authentication and association), load control,
channel control, and handoff, processing of physical layer information,
and processing of channel characteristics, propagation, interference or
noise, for the plurality of access elements in the WLAN without loss of
information about the wireless characteristics of the access elements.
This hierarchical protocol processing architecture allows the data flow
to be centralized for better performance and provides useful access to
all the protocol information from the WLAN.