CAN networks, called Controller Area Networks, can be used in the framework of real-time distributed industrial applications. Wireless CAN gives a solution when industrial mobile stations under certain constraints should continue to use the CAN protocol as a frame exchange protocol.

In Wireless CAN, we adopt the use of the RTS/CTS mechanism to gain access to the medium in a first step and to exchange ordinary CAN frames in a second step. We focus, in this paper, on the performance evaluation of Wireless CAN by coupling the two criteria: the throughput and the latency time.

After analyses, we deduce that when we increase the payload, the latency time along with the throughput increase respectively. Thus, in this way our work, in this paper, consists in computing the throughputlatency time couple that would guarantee a maximum throughput and minimum latency time in the case of WCAN