Patent ID: 8472386

Claim:
A method for transmitting data in a wireless communication system, the method comprising: determining, by a transmitter, a number of data symbols for a data field; generating, by the transmitter, the data field; and transmitting, by the transmitter, a data packet including a signal field and the data field, the signal field indicating the number of data symbols for the data field, wherein generating the data field comprises: generating a data unit comprising a plurality of Aggregate-Medium Access Control Protocol Data Unit (A-MPDU) subframes; adding a Medium Access Control (MAC) pad to the data unit to generate a padded unit; and adding a physical pad to the padded unit to generate the data field, wherein the MAC pad includes a first pad, a second pad, and a third pad sequentially, the first pad having a length of 0 to 3 bytes, the second pad having a length of a multiple of 4 bytes, and the third pad having a length of 0 to 3 bytes, and wherein the physical pad has a length of 0 to 7 bits.