Patent ID: 8144653
Filing Date: 2012-03-27
Classification: H04B,H04L,H04W

Abstract:
1. A method of transmitting a data frame having a high throughput (HT) format to a wireless local area network (WLAN) where a plurality of HT stations and a plurality of legacy stations coexist, the method comprising: generating a data frame having an HT format by inserting information indicating that a medium will be unavailable until the reception of an acknowledgement (ACK) frame is concluded into a physical layer (PHY) header having a format that can be interpreted by both the HT stations and the legacy stations; transmitting the data frame; and transmitting a reset frame which equally resets network allocation vectors (NAVs) of a plurality of stations including the HT stations and the legacy stations which have heard the data frame, and the reset frame has a format that can be interpreted by both the HT stations and the legacy stations, wherein the transmission of the reset frame comprises transmitting the reset frame before a distributed coordination function (DCF) interframe space (DIFS) elapses after the reception of the ACK frame.