Question: When a UE initiates a channel occupancy in a period and transmits a UL transmission burst, what condition must be met for the UE to transmit another UL transmission burst after a previous DL transmission burst in the same period, with a gap between them of at most [threshold value]?
Option 1: The UE must sense the channel to be idle for at least a sensing slot duration immediately before the new UL transmission burst.
Option 2: The UE may transmit the new UL transmission burst without sensing, but only if the previous DL transmission burst was intended for another UE.
Option 3: The UE may transmit the new UL transmission burst without sensing, as the short gap allows for immediate transmission following the previous DL burst.
Option 4: The UE must wait for an idle duration within the period before transmitting the new UL transmission burst.
Explanation: According to the procedures for shared spectrum channel access, if the gap between a UL transmission burst and a previous DL transmission burst in the same period is at most [threshold value], the UL transmission burst may be transmitted without sensing. This rule allows for efficient use of the channel occupancy initiated by the UE, enabling quick successive transmissions under certain conditions without requiring additional sensing to ensure the channel's idleness.