A method for wireless communication, performed at a third wireless device, comprising: determining that a first packet is to be transmitted to a first wireless device associated with a first beam; determining that a second packet is to be transmitted to a second wireless device associated with a second beam; performing a first listen before talk, LBT, procedure for the first beam using a first LBT timer that is associated with the first beam, wherein the first LBT procedure is initiated based at least in part on the first LBT timer; performing a second LBT procedure for the second beam using a second LBT timer that is associated with the second beam, wherein the second beam and the second LBT timer are different from the first beam and the first LBT timer and wherein the second LBT procedure is initiated based at least in part on the second LBT timer; performing a multiple user multiple-input multiple output, MU-MIMO, transmission based at least in part on the first LBT procedure and the second LBT procedure, wherein the MU-MIMO transmission comprises transmitting the first packet addressed to the first wireless device over the first beam and the second packet addressed to the second wireless device over the second beam; wherein the first beam corresponds to a configuration of a first antenna panel of the third wireless device, and the second beam corresponds to a configuration of a second antenna panel of the third wireless device; characterized in that performing the second LBT procedure comprises performing energy detection on a first polarization of the second beam and a second polarization of the second beam at the second antenna panel; and transmitting a third packet addressed to a fourth wireless device using the second polarization of the second beam in parallel with transmitting the second packet using the first polarization of the second beam. determining that a first packet is to be transmitted to a first wireless device associated with a first beam; determining that a second packet is to be transmitted to a second wireless device associated with a second beam; performing a first listen before talk, LBT, procedure for the first beam using a first LBT timer that is associated with the first beam, wherein the first LBT procedure is initiated based at least in part on the first LBT timer; performing a second LBT procedure for the second beam using a second LBT timer that is associated with the second beam, wherein the second beam and the second LBT timer are different from the first beam and the first LBT timer and wherein the second LBT procedure is initiated based at least in part on the second LBT timer; performing a multiple user multiple-input multiple output, MU-MIMO, transmission based at least in part on the first LBT procedure and the second LBT procedure, wherein the MU-MIMO transmission comprises transmitting the first packet addressed to the first wireless device over the first beam and the second packet addressed to the second wireless device over the second beam; wherein the first beam corresponds to a configuration of a first antenna panel of the third wireless device, and the second beam corresponds to a configuration of a second antenna panel of the third wireless device; characterized in that performing the second LBT procedure comprises performing energy detection on a first polarization of the second beam and a second polarization of the second beam at the second antenna panel; and transmitting a third packet addressed to a fourth wireless device using the second polarization of the second beam in parallel with transmitting the second packet using the first polarization of the second beam.