If the TPC-based operation is not supported in the AP (or BSS), the TPC STA may not be able to perform the TPC-based operation, and may operate based on non-TPC. The TPC STA operating based on the non-TPC may not control transmit power but perform channel access on a time resource overlapping with the non-TPC STA. Alternatively, if the TPC-based operation is not supported, the AP (or BSS) may scan another AP (or BSS) supporting the TPC-based operation.

In another method, the AP may transmit information regarding whether to support the TPC-based operation by the AP (or in the BSS) through a beacon frame. Regarding an STA which performs access scanning and thus does not receive the beacon frame, the AP may transmit the information regarding whether to support the TPC-based operation through the probe response frame transmitted in response to the probe request frame.

According to an embodiment of the present invention, the time duration in which the TPC-based operation is supported may also be configured when performing the procedure of configuring the TPC-based operation. In this case, the TPC configuration request frame may further include information regarding the TPC STA time resource, and the TPC configuration response frame may include information regarding whether to accept/reject/update the requested TPC STA time resource.

Further, after completion of the procedure of configuring the TPC-based operation with respect to the TPC STA, the AP may transmit a frame including information regarding the TPC STA channel (a TPC channel start time, a TPC channel end time, a TPC channel duration, etc.) and information regarding the TPC STA's transmit power in the BSS in a broadcast manner.