In one embodiment, “No DL and No UL” or “empty” or “reserved” may mean that the UE does not perform transmission or reception for a reference signal or a channel in symbols indicated as “No DL and No UL” or “empty” or “reserved”. Additionally, “No DL and No UL” or “empty” or “reserved” may mean that the UE does not perform transmission or reception for a reference signal with configured resources or a channel with configured resources in symbols indicated as “No DL and No UL” or “empty” or “reserved”. Furthermore, “No DL and No UL” or “empty” or “reserved” may mean that the UE does not perform transmission or reception for a reference signal or a channel in symbols indicated as “No DL and No UL” or “empty” or “reserved”, unless the UE receives an indication for reference signal triggering and/or data scheduling, e.g. a DCI for reference signal triggering and/or DL or UL resource assignment.
In one embodiment, “No DL and No UL” or “empty” or “reserved” may mean that the UE does not perform transmission or reception for a reference signal with configured resources or a channel with configured resources in symbols indicated as “No DL and No UL” or “empty” or “reserved”, unless the UE receives an indication for reference signal triggering and/or data scheduling, e.g. a DCI for reference signal triggering and/or DL/UL resource assignment.
The way for the control signal to explicitly or implicitly indicate the timing of ending scheduling time unit or TTI and/or ending symbol can be implemented through at least two alternatives discussed below.