Patent ID: 7280495

Claim:
A method comprising: transmitting an Eavesdrop Unicast frame to a destination device by a transmitting device, the Eavesdrop Unicast frame includes at least four address fields, a first address field including a destination address of the destination device and a fourth address field including either a medium access control (MAC) address assigned to a plurality of devices including the destination device or a predetermined value; and receiving at the transmitting device a data frame assembled in accordance with Institute of Electrical and Electronics Engineers (IEEE) 802.11 having a type field identifying the frame to be a data type, from the destination device in response to the destination device receiving the Eavesdrop Unicast frame for acknowledgement of receipt of the Eavesdrop Unicast frame, the contents within a first address field of the data frame having been overwritten with contents from the fourth address field of the Eavesdrop Unicast frame.