An electronic equipment in a wireless communication system, and a wireless communication method. The wireless communication system includes at least one first cell and at least one second cell, and at least one of the second cells is operating in an unlicensed band. The electronic equipment includes one or more processing circuits configured to perform: configuring for a user equipment at least one second cell operating in an unlicensed band to perform carrier aggregation communication; and generating, dynamically or semi-statically, energy detection threshold information for each second cell operating in the unlicensed band so that the user equipment can perform energy detection on the unlicensed band according to the energy detection threshold information.