Patent ID: 9307538
Filing Date: 2016-04-05
CPC Classification: H04W

Claim Text:
1. A method for communicating in a wireless local area network, the method comprising: selecting, by a transmitting station, a transmission channel by performing a Clear Channel Assessment (CCA); and transmitting, by the transmitting station, a Physical layer Protocol Data Unit (PPDU) over the selected transmission channel to a receiving station, wherein the transmission channel includes a primary 20 MHz channel and a secondary 20 MHz channel if the secondary 20 MHz channel was idle, wherein the transmission channel includes the primary 20 MHz channel, the secondary 20 MHz channel and a secondary 40 MHz channel if both the secondary 20 MHz channel and the secondary 40 MHz channel were idle, and wherein the primary 20 MHz channel is positioned between the secondary 20 MHz channel and the secondary 40 MHz channel if the transmission channel includes the primary 20 MHz channel, the secondary 20 MHz channel and a secondary 40 MHz channel.