Method for reporting channel information based on link adaptation in wireless local area network and the apparatus for the same

An wireless apparatus comprising:

• a transceiver transmitting and receiving radio signal;
• and, a processor operationally coupled to the transceiver, wherein the processor is configured for the step of :
• receiving a data block for requesting a modulation and coding scheme (MCS) feedback from a requesting station, the data block including a data field and a stream indicator indicating a number of at least one spatial stream in the data field;
• determining the MCS feedback based on the data block;
• and, transmitting the MCS feedback to the requesting station, the MCS feedback including a recommended MCS and a recommended stream indicator indicating a number of at least one recommended spatial stream,
• wherein the number of the at least one recommended spatial stream in the MCS feedback is equal or less than the number of the at least one spatial stream in the data block.