IEEE 802.11 is one of the wireless network MAC/PHY protocols. Though IEEE 802.11 a/b/g offers more than one non-overlapping channels, IEEE 802.11 a/b/g uses just one channel for communication. These days, NICs(Network Interface Cards)'s cost has been decreasing and its performance has been increasing. Therefore, the mobile nodes are able to use more than one interface and many channels simultaneously. This paper suggests the MIMC(Multi Interface Multi Channel) hybrid channel assignment algorism for using the nodes which has different number of interfaces in IEEE 802.11.