A method of transmitting a multiple input multiple output, MIMO, packet in a wireless local area network system, the method comprising: generating first control information; generating at least one data field (530, 531, 532, 533) to be transmitted based on at least one spatial stream; and transmitting a physical layer convergence procedure protocol data unit, PPDU, including the first control information and the at least one data field (530, 531, 532, 533) by using a single user multiple input multiple output, SU-MIMO, transmission scheme or a multi user, MU, -MIMO transmission scheme, wherein the first control information includes a plurality of fields for interpreting the PPDU, wherein a first field of the first control information indicates whether the PPDU is transmitted by using the SU-MIMO transmission scheme or the MU-MIMO transmission scheme, characterised in that: a second field of the first control information indicates one encoding scheme applied to one data field when the PPDU is transmitted by using the SU-MIMO transmission scheme, wherein the second field of the first control information indicates an encoding scheme applied to a data field to be transmitted to a first receiving station of a plurality of receiving stations when the PPDU is transmitted by using the MU-MIMO transmission scheme, wherein a third field of the first control information indicates one modulation and coding scheme, MCS, index for decoding one data field when the PPDU is transmitted by using the SU-MIMO transmission scheme, wherein the third field of the first control information indicates an encoding scheme applied to respective data fields (532, 533) to be transmitted to the plurality of receiving stations other than the first receiving station when the PPDU is transmitted by using the MU-MIMO transmission scheme, wherein the third field consists of four consecutive bits, wherein when the PPDU is transmitted by using the MU-MIMO transmission scheme, a fourth bit of the third field is reserved and first to third bits of the third field are used for corresponding receiving stations other than the first receiving station, wherein the encoding scheme is a binary convolution coding, BCC, encoding scheme or a low density parity check, LDPC, encoding scheme. generating first control information; generating at least one data field (530, 531, 532, 533) to be transmitted based on at least one spatial stream; and transmitting a physical layer convergence procedure protocol data unit, PPDU, including the first control information and the at least one data field (530, 531, 532, 533) by using a single user multiple input multiple output, SU-MIMO, transmission scheme or a multi user, MU, -MIMO transmission scheme, wherein the first control information includes a plurality of fields for interpreting the PPDU, wherein a first field of the first control information indicates whether the PPDU is transmitted by using the SU-MIMO transmission scheme or the MU-MIMO transmission scheme, characterised in that: a second field of the first control information indicates one encoding scheme applied to one data field when the PPDU is transmitted by using the SU-MIMO transmission scheme, wherein the second field of the first control information indicates an encoding scheme applied to a data field to be transmitted to a first receiving station of a plurality of receiving stations when the PPDU is transmitted by using the MU-MIMO transmission scheme, wherein a third field of the first control information indicates one modulation and coding scheme, MCS, index for decoding one data field when the PPDU is transmitted by using the SU-MIMO transmission scheme, wherein the third field of the first control information indicates an encoding scheme applied to respective data fields (532, 533) to be transmitted to the plurality of receiving stations other than the first receiving station when the PPDU is transmitted by using the MU-MIMO transmission scheme, wherein the third field consists of four consecutive bits, wherein when the PPDU is transmitted by using the MU-MIMO transmission scheme, a fourth bit of the third field is reserved and first to third bits of the third field are used for corresponding receiving stations other than the first receiving station, wherein the encoding scheme is a binary convolution coding, BCC, encoding scheme or a low density parity check, LDPC, encoding scheme.