Patent ID: 9432940
Filing Date: 2016-08-30
CPC Classification: H04L,H04W,Y02D

Claim Text:
1. A method of accessing a channel in a wireless local area network, comprising: receiving, by a destination station, a plurality of request to send (RTS) frames to update its network allocation vector from a source station over a first band; and transmitting, by the destination station, a clear to send (CTS) frame over a second band to the source station in response to the plurality of RTS frames, wherein the first band includes a plurality of first 20 MHz bands, each of the plurality of RTS frames corresponding to each of the plurality of first 20 MHz bands, wherein the second band includes at least one second 20 MHz band, wherein a number of the at least one second 20 MHz band is equal to or less than a number of the plurality of first 20 MHz bands, and wherein each of the plurality of RTS frames includes transmission mode information indicating an entire bandwidth of the plurality of first 20 MHz bands.