A method of wireless communication, comprising: transmitting , from a first access point of a plurality of access points (110a-c) to each of the plurality of access points (110b-c) other than the first access point , an announcement frame for performing a beamforming procedure for a distributed transmission, wherein the distributed transmission includes a transmission from the plurality of access points (110a-c), wherein the announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point , and wherein the announcement frame is configured to cause each of the plurality of access points (110b-c) other than the first access point to transmit a separate packet for measuring a channel, wherein each of the plurality of access points (110a-c) transmits the separate packet for measuring the channel during a same time interval based on the announcement frame; transmitting , from the first access point to the user terminal , a packet for measuring the channel; receiving , by the first access point , feedback information from the user terminal based on the packet for measuring the channel; and transmitting , by the first access point , the distributed transmission using the beamforming procedure, wherein the beamforming procedure is based on the feedback information. transmitting , from a first access point of a plurality of access points (110a-c) to each of the plurality of access points (110b-c) other than the first access point , an announcement frame for performing a beamforming procedure for a distributed transmission, wherein the distributed transmission includes a transmission from the plurality of access points (110a-c), wherein the announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point , and wherein the announcement frame is configured to cause each of the plurality of access points (110b-c) other than the first access point to transmit a separate packet for measuring a channel, wherein each of the plurality of access points (110a-c) transmits the separate packet for measuring the channel during a same time interval based on the announcement frame; wherein the distributed transmission includes a transmission from the plurality of access points (110a-c), wherein the announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point , and wherein the announcement frame is configured to cause each of the plurality of access points (110b-c) other than the first access point to transmit a separate packet for measuring a channel, wherein each of the plurality of access points (110a-c) transmits the separate packet for measuring the channel during a same time interval based on the announcement frame; transmitting , from the first access point to the user terminal , a packet for measuring the channel; receiving , by the first access point , feedback information from the user terminal based on the packet for measuring the channel; and transmitting , by the first access point , the distributed transmission using the beamforming procedure, wherein the beamforming procedure is based on the feedback information. <EOS>