wiki:802.11/MAC/Upper/AP

Version 6 (modified by chunter, 10 years ago) (diff)

--

The 802.11 Reference Design and its documentation are under active development by the Mango team. The current release should be considered a beta- updates with bug fixes, API changes, new features and other refinements will be posted frequently. Please check the downloads page for the latest updates and post any questions about the design to the forums.

Access Point

The Access Point implementation in the Mango 802.11 Reference Design allows 802.11 stations to associate and bridge their traffic over the Ethernet port of a WARP v3 kit.

Top-level view of AP States

There are three broad classes of events that pull the AP implementation out of an idle state. Those classes are:

  1. Wireless MPDU Receptions
  2. Ethernet Frame Receptions
  3. Scheduled Events

In our implementation, each of these state transitions occurs via an interrupt.

Wireless MPDU Receptions

MPDU Reception States

When receiving a wireless MPDU, an 802.11 AP must filter on the type of packet and where it came from (i.e. transmitter address TA). In the event that the received MPDU is a data frame intended to be delivered to the wired Ethernet portal, it is passed off to the MAC High Framework's Ethernet Encapsulation

Ethernet Frame Receptions

Ethernet Reception States

Scheduled Event

Scheduled Events