Patent ID: 9450726
Filing Date: 2016-09-20
CPC Classification: H04B,H04J,H04L,H04W

Claim Text:
1. A method of performing link adaptation in a wireless local area network system by a mobile station, the method comprising: receiving, by the mobile station, a first physical layer protocol data unit (PPDU) transmitted by an access point (AP) via multi-user multiple input/multiple output (MU MIMO) transmission to a plurality of mobile stations, the first PPDU including a first feedback sequence identifier that includes a value identifying the plurality of mobile stations, when the mobile station is one of the plurality of mobile stations identified by the value included by the first feedback sequence identifier, estimating a modulation and coding scheme (MCS) based on the first PPDU; and transmitting, by the mobile station, a second PPDU to the AP, wherein the second PPDU includes channel information about the estimated MCS and a second feedback sequence identifier, the second feedback sequence identifier including the value included by the first feedback sequence identifier.