Patent ID: 7889634
Filing Date: 2011-02-15
Classification: H04L

Abstract:
1. An apparatus comprising: a transmitter configured to transmit a first orthogonal frequency-division multiplexing signal, the first orthogonal frequency-division multiplexing signal comprising a first signal burst, the first signal burst comprising a plurality of first fields of a first type, and a plurality of pair fields, each of the pair fields comprising a second field of a second type and a third field of a third type, the second type being different than the first type, the third type being different than the first type and the second type, wherein each of the first fields is transmittable prior to a corresponding one of the pair fields, and wherein the second field of one of the pair fields comprises an indicator to indicate (i) whether one of the first fields is transmitted subsequent to the one of the pair fields, and (ii) a duration of an inter-frame gap following the one of the pair fields; and a controller configured to select a first number of the pair fields to be transmitted in the first signal burst of the first orthogonal frequency-division multiplexing signal.