“…The most conventional PID controller is described in (3): 121 , , and is referred to the proportional, integral, and derivative constant gain respectively. Is the output of PID controller, and is error signal between the input reference and the process output, Figure 3, shows the internal structure of PIDC with input parameters ( , , , , and ), and with as an output parameter [22,23]. The control on congestion in a TCP network is considered a very complex and nonlinear process, so the fuzzy logic is used to reduce the effect of these problems, Figure 4, is shown all block diagrams that describes the fuzzy controller operation.…”