Design and Performance Evaluation of a Distributed OFDMA-Based MAC Protocol for MANETs

Figure 6

An example scenario of an LET5.

(a) At time 𝑡, both 𝐴 and 𝐶 are sending RTS frames to 𝐶 to reserve a PDU bin 1 while 𝐸 sends a 𝑅³₃ to 𝐷

(b) At time 𝑡+1, 𝐵 detects a LET3 and assigns the PDU bin 3 to 𝐶 by sending a 𝐶²₃

(c) At time 𝑡+2, the data sent from 𝐶 to 𝐵 fail the data transmission from 𝐸 to 𝐷