User equipment and network node involved in communication

An integrated circuit for controlling a user equipment (UE), the integrated circuit comprising:

• control circuitry which, in operation, determines, based on a type of a transmission, a time interval between an outer boundary of a transient period for ramping of power to start or finish the transmission and a symbol on which a signal included in the transmission is to be transmitted;
• and
• transceiver circuitry which, in operation, transmits the signal on the symbol;
• wherein
• the time interval and a time window for clear channel assessment (CCA) are non-overlapping,
• the symbol on which the signal is transmitted is at a time boundary of the transmission,
• the signal is included in a current transmission and the CCA is a CCA for a future transmission,
• the time boundary is an end boundary of the current transmission,
• the transceiver circuitry, in operation, receives, in a grant or in higher layer signaling, an indication of a start boundary of the current transmission and of a duration of the current transmission,
• the control circuitry, in operation, derives the end boundary of the current transmission from the indicated start boundary and duration of the current transmission, and determines an inner boundary of the transient period to be located at a distance from the end boundary of the current transmission which is a difference between a length of the transient period and the time interval, and
• the type of the transmission includes a service requirement for a type of the signal, and the time interval is longer if the service requirement is higher and shorter if the service requirement is lower.