Problem
Consider an IEEE 802.11 WLAN setup that uses Distributed Coordination Function (DCF) to handle frame collisions. Network administrator has not enabled RTS/CTS on this setup.
Using the textbook diagram 6-16 (page 217) as a guide, draw a diagram that shows three WLAN devices A, B and C, competing for access to the medium. Assume all three devices have one data frame to send out. Initially, the random backoff counters for these devices are 4, 6 and 5 respectively. Further assume that device A's frame gets corrupted by an external interference and hence no ACK is received. The corrupted frame will be retransmitted, following DCF rules.