Презентации / 5_WirelessFrames

◦Sending a frame requires a timing and acknowledgment system that is based on CSMA/CA.

◦802.11 frames have a specific shape with headers containing specific information and different parts that are sent at different speeds.

◦Beacons and probes help discover the network.

◦Authentication and association frames are used to join the cell.

◦Some other management frames may be used while the client is connected.

◦Control frames improve the communication framework by allowing special messages in specific cases, such as RTS and CTS or PCF.

◦Some stations may use the power save mode to increase battery time, which means there must be specific exchanges with the AP.