A user-controlled application-based power management function is provided for a battery-operated device. In the logic region, a high-k dielectric and a barrier layer are formed. The first and second axes can be parallel to one another. If the status code indicates that the second station accepts the schedule information, the first station may transmit an MPDU whose power save bit is set to \u20181\u2019 to the second station and then enter the PSM.