Patent ID: 8416779

Claim:
A transmission packet used in a link-adaptation mechanism for a network comprising a source device and a sink device, the transmission packet comprising: a payload of comprising at least one transmission data unit; and at least one header, wherein the link adaptation mechanism comprises: a Link Assessment operation, in which at least one of a state of a channel, provided between the source device and the sink device, and a quality of a first, packet transmitted from the source device to the sink device is assessed by the sink device; the Link Recommendation operation, in which a transmission mode suitable for the channel is recommended by the sink device which uses a result of the Link Assessment operation and transmits the transmission packet to the source device, the payload of the transmission packet comprising a link recommendation command in which information on the recommended transmission mode for the channel is recorded; and a Link Adjustment operation, in which the an existing transmission mode of the source device is adjusted using the information on the recommended transmission mode; wherein the recommendation command included in the payload of the transmission packet comprises: a high-rate PHY (HRP) mode field that records information on an HRP mode for the recommended transmission mode; and a low-rate PHY (LRP) mode field that records information on an LRP mode for the recommended transmission mode.