Abstract: A control frame processing method receives a control frame transmitted by the access point, and parses the received control frame to extract a random value and a MIC check value therein; decrypts the random value and the MIC check value by using a data key from the access point to obtain an original plaintext of the random value and the original plaintext of the MIC check value; calculates a local MIC check value using the MIC key from the access point, the non-check field in the control frame, and the random value; determines whether the original plaintext of the MIC check value is consistent with the local MIC check value, and in response to that the original plaintext of the MIC check value is consistent with the local MIC check value, performs a corresponding control operation according to the control frame.

Abstract: Provided is a method sending an acknowledgment frame, wherein by receiving a data frame sent by the first access point and calculating the minimum transmission power of the present station, the maximum transmission power of the station is used as the initial transmission power; the pre-established queue of the maximum transmission powers of the overlapping basic service set is invoked; the queue is a set of maximum transmission powers which does not affect packet reception of one or more second stations and calculated by the first station; the maximum transmission power of the overlapping basic service set allowed in the pre-established queue is traversed sequentially; being greater than or equal to the minimum transmission power, the minimum value among the initial transmission power and one or more maximum transmission powers is taken as the final transmission power; and the acknowledgment frame is sent by using the determined final transmission power.