1. A method of wireless communication at a base station, comprising:performing a dual clear channel assessment (CCA) procedure for a frame prior to transmitting a transmission, wherein the dual CCA procedure comprises CCA followed by a first extended CCA (eCCA) when the CCA is unsuccessful;
transmitting the transmission during the frame when at least one CCA procedure of the dual CCA procedure is successful;
refraining from transmitting during the frame when both CCA procedures of the dual CCA procedure are unsuccessful; and
when the CCA and the first eCCA of the dual CCA procedure are unsuccessful:
waiting until a next CCA location at a next frame boundary following the frame in which the CCA and the first eCCA are performed; and
performing a second eCCA at the next CCA location prior to transmitting the transmission, wherein the second eCCA comprises a next eCCA following the dual CCA procedure and is performed at the next CCA location without performing a new CCA at the next CCA location.