Methods for modifying a central frequency of a channel following a change in channel width between wireless devices are disclosed. The station desiring a channel width change notifies the AP and enters a constructive power management mode, which keeps the AP from sending frames to the station. This enables the station to move the central frequency without concern of data loss, then restores itself to a full-power state. Or, the station communicates the desire to switch channel modes after receiving a beacon frame from the AP, then switches the central frequency of the channel during a subsequent beacon, or during some predetermined time period prior to the subsequent beacon. While the central frequency is being changed, the station does not miss a frame intended to be communicated to the station.