Support for additional decoding processing time in wireless lan systems

Abstract

A wireless communication device in a wireless system may generate a High Efficiency Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (HE PPDU) frame including (i) an Orthogonal Frequency Division Multiplexing (OFDM) symbol including padding bits and (ii) an extension having a non-zero signal strength, and transmit the HE PPDU frame. A High Efficiency signal (HE-SIG) field of the transmitted HE PPDU frame may include an indication for a duration of the extension to avoid ambiguity of the extension. A communication device in a wireless system may receive an HE PPDU frame including (i) an OFDM symbol including padding bits, and (ii) an extension having a non-zero signal strength, and transmit an Acknowledgement frame a predetermined inter-frame space after an end of the HE PPDU frame. An HE-SIG field of the received HE PPDU may include an indication for duration of the extension to avoid ambiguity of the extension.

What is claimed is: 
     
         1 . A method of a communication device, the method comprising:
 generating capability information of the communication device, wherein the capability information indicates a required additional processing time which is to be provided by (i) first padding bits of a High Efficiency Physical layer Protocol Data Unit (HE PPDU) frame and (ii) an extension of the HE PPDU frame; and   transmitting the capability information.