The present invention relates to a method of avoiding collision in a. More specifically, the present invention relates to a method of effectively avoiding collision when resources are allocated to and used by substantial mobile terminals in a synchronous wireless distribution communication system. The method of avoiding collision includes: determining, by a terminal, a slot to be transmitted in a main frequency channel; in a slot prior to the determined slot, performing contention using a contention deputy channel having a different frequency from the main frequency channel; and using the selected slot of the main frequency channel when winning the contention.
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