Patent ID: 8599731
Filing Date: 2013-12-03
Classification: H04W

Abstract:
1. A method of exchanging messages at a receiving device in a wireless network, the method comprising: receiving a link recommendation request message from a transmitting device, wherein the link recommendation request message is included in a first Medium Access Control (MAC) extension header of a first data packet which includes user data to be transmitted to the receiving device from the transmitting device; and transmitting an ACK packet to the transmitting device in response to the first data packet, the ACK packet comprising a second MAC extension header which includes transmit power control (TPC) information, wherein the TPC information is to be used by the transmitting device to determine whether to change transmission power of the transmitting device, and wherein the TPC information is determined based on a channel status of a channel on which the first data packet is received, wherein the second MAC extension header comprises: an extension control field comprising control information; a type field indicating a type of data included in sub-packets constituting the ACK packet; a low-rate physical (LRP) antenna direction tracking (ADT) feedback field comprising ADT feedback information for obtaining an optimized transmission pattern during future signal transmission in an LRP unidirectional mode; an ACK group field comprising information indicating whether preceding sub-packets exist; and at least one clock field comprising clock count information of video data or audio data.