Patent ID: 8909286
Filing Date: 2014-12-09
Classification: H04W,Y02D

Abstract:
1. A method for use in an access point (AP), the method comprising: receiving a request-to-send (RTS) frame from a station (STA), wherein the RTS frame indicates a request for a transmit opportunity (TXOP); transmitting, in response to the RTS frame, an indication of a TXOP, wherein the indication of a TXOP is a clear-to-send (CTS) frame; receiving packet data from the STA during the TXOP; receiving, on a condition that the STA does not have further packet data to transmit, an indication of truncation of the TXOP including a first space-time block code (STBC) contention free (CF)-End frame or a first non-STBC CF-End frame; and transmitting a second STBC CF-End frame and a second non-STBC CF-End frame.