A technique for accessing a wireless channel by a station using an access technology in coexistence with the same or another access technology on the wireless channel is described. As to a method aspect, resources (302) on the wireless channel are allocated or an allocation (300) therefor is received at the station. The allocation is not uniquely associated with data to be transmitted by the station on the wireless channel. If data to be transmitted by the station on the wireless channel is available, a listen before talk (LBT) process is performed on the wireless channel or transmission is deferred to satisfy a time-averaged transmit constraint. The data is transmitted by the station using at least one of the allocated resources (302) on the wireless channel, if the LBT process indicates that the wireless channel is clear for the at least one allocated resource (302) or if the time-averaged transmit constraint is satisfied for the at least one allocated resource (302).