A wireless communication terminal, the terminal comprising: a communication unit; and a processor configured to process signals transmitted and received through the communication unit, wherein the processor is configured to: receive, through the communication unit, a high efficiency multi-user PHY protocol data unit, HE MU PPDU, wherein a preamble of the HE MU PPDU includes a high efficiency signal A, HE-SIG-A, field and a high efficiency signal B, HE-SIG-B, field, and decode the received HE MU PPDU based on information obtained from the preamble, wherein the HE-SIG-A field includes a SIG-B compression subfield and a specific subfield, the specific subfield indicating a number of MU-MIMO users or a number of orthogonal frequency division multiplexing, OFDM, symbols according to a value of the SIG-B compression subfield, when the value of the SIG-B compression subfield indicates a full-bandwidth MU-MIMO transmission, - the specific subfield indicates the number of MU-MIMO users, and - a format of each of at least one user field constituting a user specific field of the HE-SIG-B field is configured for MU-MIMO allocation or non-MU-MIMO allocation based on whether the specific subfield indicates two or more users or a single user, respectively. a communication unit; and a processor configured to process signals transmitted and received through the communication unit, wherein the processor is configured to: receive, through the communication unit, a high efficiency multi-user PHY protocol data unit, HE MU PPDU, wherein a preamble of the HE MU PPDU includes a high efficiency signal A, HE-SIG-A, field and a high efficiency signal B, HE-SIG-B, field, and decode the received HE MU PPDU based on information obtained from the preamble, wherein the HE-SIG-A field includes a SIG-B compression subfield and a specific subfield, the specific subfield indicating a number of MU-MIMO users or a number of orthogonal frequency division multiplexing, OFDM, symbols according to a value of the SIG-B compression subfield, when the value of the SIG-B compression subfield indicates a full-bandwidth MU-MIMO transmission, - the specific subfield indicates the number of MU-MIMO users, and - a format of each of at least one user field constituting a user specific field of the HE-SIG-B field is configured for MU-MIMO allocation or non-MU-MIMO allocation based on whether the specific subfield indicates two or more users or a single user, respectively. receive, through the communication unit, a high efficiency multi-user PHY protocol data unit, HE MU PPDU, wherein a preamble of the HE MU PPDU includes a high efficiency signal A, HE-SIG-A, field and a high efficiency signal B, HE-SIG-B, field, and decode the received HE MU PPDU based on information obtained from the preamble, wherein the HE-SIG-A field includes a SIG-B compression subfield and a specific subfield, the specific subfield indicating a number of MU-MIMO users or a number of orthogonal frequency division multiplexing, OFDM, symbols according to a value of the SIG-B compression subfield, when the value of the SIG-B compression subfield indicates a full-bandwidth MU-MIMO transmission, - the specific subfield indicates the number of MU-MIMO users, and - a format of each of at least one user field constituting a user specific field of the HE-SIG-B field is configured for MU-MIMO allocation or non-MU-MIMO allocation based on whether the specific subfield indicates two or more users or a single user, respectively. - the specific subfield indicates the number of MU-MIMO users, and - a format of each of at least one user field constituting a user specific field of the HE-SIG-B field is configured for MU-MIMO allocation or non-MU-MIMO allocation based on whether the specific subfield indicates two or more users or a single user, respectively. <EOS>