Patent ID: 8446891

Claim:
A method for communicating over a wireless local area network, comprising: generating, by a transmitter, an initial data block; adding, by the transmitter, zero or more first padding unit to the initial data block to generate a first padded block if a length of the initial data block is less than a target length, wherein a length of the first padded block is a multiple of a first predetermined length; adding, by the transmitter, one or more second padding unit to the first padded block to generate a second padded block if the length of the first padded block is less than the target length, wherein a length of the second padded block is a multiple of a second predetermined length; and transmitting, by the transmitter, the second padded block if the length of the second padded block is equal to the target length, wherein the first and second padding units have different lengths from each other.