Method and device for transmitting and receiving signals in wireless communication system
摘要
說明書
When the UE receives a UL grant in a subframe (or slot) ng and transmits a UL-SCH in subframes (or slots) n0, n1, . . . nw, starting from the subframe (or slot) n0 without a gap (the subframe (or slot) nw is the most recent subframe (or slot) before a subframe (or slot) ng?3 in which the UE has transmitted a UL-SCH based on a Type 1 CAP), the reference subframe (or slot) nref is the subframe (or slot) n0.
(2) Type 2 UL CAP Method
When the UE uses the Type 2 CAP to transmit a UL signal (including the PUSCH) in a U-band, the UE may transmit the UL signal (including the PUSCH) in the U-band immediately after sensing that the channel is idle at least for a sensing period Tshort_ul of 25 us. Tshort_ul includes a duration Tf of 16 us immediately followed by one slot duration Tsl of 9 us. Tf includes an idle slot duration Tsl at the start thereof.
PUSCH Transmission in U-Band
The present disclosure proposes methods of scheduling a plurality of PUSCHs transmitted in a plurality of slots with one DCI by considering the DCI overhead required for UL data scheduling and the LBT operation of a UE required before UL transmission for U-band operations. The methods proposed in the present disclosure are not limited to LBT-based U-band operations, and the embodiments of the present disclosure may be equally/similarly applied to L-band (or U-band) operations accompanied by no LBT. For PUSCH signal transmission, the following two data mapping types may be considered.
1) Data Mapping Type A
A. A structure in which a DMRS is mapped/transmitted to/in a specific symbol position/index (e.g., symbol index Y) in a slot
