Channel reservation method and system

The invention discloses a channel reservation method and system. The method comprises the following steps of: sending channel reservation request information to a receiving station by a sending station on a first number of base channels, wherein the first number is an integer larger than or equal to 1, and the base channels are minimum-bandwidth channels defined in a system in which the sending station and the receiving station are located; sending channel reservation acknowledgement information to the sending station by the receiving station on a second number of base channels, wherein the second number is an integer larger than or equal to 1; and receiving the channel reservation acknowledgement information by the sending station and then completing the channel reservation with the receiving station. According to the method and system, the inference caused by other sending stations is avoided.