Patent ID: 8111654

Claim:
A wireless communication device for uncompressed video data, comprising: a receiver configured to receive a data packet via a channel during a reserved time slot or contention-free data period; and a transmitter configured to send an acknowledgment (ACK) frame during the slot period via a low-rate channel upon receiving the data packet, the low-rate channel having a directional mode and an omni-directional mode, the (ACK) frame comprising: a low-rate physical layer (LRP) preamble; and an ACK header comprising a mode index field, the mode index field comprising a plurality of bits indicative of whether the ACK frame is transmitted using the directional mode or the omni-directional mode, wherein the ACK header further comprises an ACK bitmap indicative of the status of the data packet, and wherein the data packet comprises a plurality of sub-packets, and wherein the ACK bitmap includes a plurality of bits, each of the ACK bitmap bits being indicative of the status of one of the sub-packets, wherein the ACK frame includes neither information indicative of a source address nor information indicative of a destination address, and wherein the ACK frame does not include a media access control (MAC) header.