A method performed by a first wireless communication apparatus for transmitting data to a second wireless communication apparatus in a communication channel shared with a communication link including a third wireless communication apparatus, wherein each of the first wireless communication apparatus, the second wireless communication apparatus and the third wireless communication apparatus implements listen after talk, LAT, in 5G radio access technology, RAT, the method comprising: determining there is data to be transmitted to the second wireless communication apparatus; and transmitting the data to the second wireless communication apparatus before listening to the channel, wherein communication with the second wireless communication apparatus is performed using directional transmission and wherein said transmitting the data to the second wireless communication apparatus before listening to the channel comprises: performing a data transmission and entering an idle state, if interference is determined during the data transmission: stopping the data transmission, and listening to the channel for a transmitting indication in order to continue transmitting of data from the first wireless communication apparatus to the second wireless communication apparatus, if during the listening, the first wireless communication apparatus receives a transmitting indication, from the second communication apparatus, indicating transmitting of data from the first communication apparatus to the second communication apparatus according to a time slot indicated by a data unit comprising a data header, then transmitting of data will be performed according to said time slot, and wherein said time slot indicates an idle state time of the third wireless communication apparatus. determining there is data to be transmitted to the second wireless communication apparatus; and transmitting the data to the second wireless communication apparatus before listening to the channel, wherein communication with the second wireless communication apparatus is performed using directional transmission and wherein said transmitting the data to the second wireless communication apparatus before listening to the channel comprises: performing a data transmission and entering an idle state, if interference is determined during the data transmission: stopping the data transmission, and listening to the channel for a transmitting indication in order to continue transmitting of data from the first wireless communication apparatus to the second wireless communication apparatus, if during the listening, the first wireless communication apparatus receives a transmitting indication, from the second communication apparatus, indicating transmitting of data from the first communication apparatus to the second communication apparatus according to a time slot indicated by a data unit comprising a data header, then transmitting of data will be performed according to said time slot, and wherein said time slot indicates an idle state time of the third wireless communication apparatus. performing a data transmission and entering an idle state, if interference is determined during the data transmission: stopping the data transmission, and listening to the channel for a transmitting indication in order to continue transmitting of data from the first wireless communication apparatus to the second wireless communication apparatus, if during the listening, the first wireless communication apparatus receives a transmitting indication, from the second communication apparatus, indicating transmitting of data from the first communication apparatus to the second communication apparatus according to a time slot indicated by a data unit comprising a data header, then transmitting of data will be performed according to said time slot, and wherein said time slot indicates an idle state time of the third wireless communication apparatus. stopping the data transmission, and listening to the channel for a transmitting indication in order to continue transmitting of data from the first wireless communication apparatus to the second wireless communication apparatus, if during the listening, the first wireless communication apparatus receives a transmitting indication, from the second communication apparatus, indicating transmitting of data from the first communication apparatus to the second communication apparatus according to a time slot indicated by a data unit comprising a data header, then transmitting of data will be performed according to said time slot, and wherein said time slot indicates an idle state time of the third wireless communication apparatus.