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In this paper, we propose a new multi-channel MAC protocol for MHs that are equipped with single transceiver or multi-transceivers in ad hoc wireless network. The proposed protocol modified the RTS/CTS frames for multi-channel usage, and divides the transmission frame into channel negotiation and data transmission period. The protocol can contain different type of MHs including multi-channel and single channel nodes and achieve high throughput. The simulation results show that our schemes can effectively exploit multiple channels to achieve higher throughput than IEEE 802.11 and many existing multi-channel MAC protocols.