US 12,457,084 B2
Method and apparatus for transmitting uplink signal in a communication system
Jingxing Fu, Beijing (CN); Feifei Sun, Beijing (CN); Yi Wang, Beijing (CN); and Bin Yu, Beijing (CN)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 17/624,717
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Jul. 10, 2020, PCT No. PCT/KR2020/009082
§ 371(c)(1), (2) Date Jan. 4, 2022,
PCT Pub. No. WO2021/010666, PCT Pub. Date Jan. 21, 2021.
Claims priority of application No. 201910630689.9 (CN), filed on Jul. 12, 2019; application No. 201910938786.4 (CN), filed on Sep. 30, 2019; application No. 201911055423.2 (CN), filed on Oct. 31, 2019; and application No. 202010203399.9 (CN), filed on Mar. 20, 2020.
Prior Publication US 2022/0247543 A1, Aug. 4, 2022
Int. Cl. H04W 74/0808 (2024.01); H04L 5/00 (2006.01)
CPC H04L 5/0055 (2013.01) [H04W 74/0808 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) in a communication system, the method comprising:
receiving, from a base station via a higher layer signaling, information for physical uplink control channel (PUCCH) resources constituting a PUCCH resource set and information for subsets of the PUCCH resource set, wherein multiple PUCCH resources in a subset of the PUCCH resource set belong to different uplink listen before talk (LBT) sub-bands;
receiving, from the base station, a physical downlink control channel (PDCCH) scheduling a physical downlink shared channel (PDSCH), wherein the PDCCH provides downlink control information (DCI) including a PUCCH resource indicator (PRI) indicating the subset of PUCCH resource set from the subsets of the PUCCH resource set;
performing LBT on uplink LBT sub-bands in turn according to a priority order, wherein the uplink LBT sub-bands are where PUCCH resources in the subset of PUCCH resource set are located;
identifying a PUCCH resource to transmit hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH based on the LBT performed on the uplink LBT sub-bands; and
transmitting, to the base station, the HARQ-ACK information on the PUCCH resource,
wherein mapping between the PRI and the subsets of PUCCH resource set is independent of downlink LBT sub-band where the PDCCH is received, and
wherein a first uplink LBT sub-band which is in a same frequency band as a downlink LBT sub-band where the PDCCH is located has priority over a second uplink LBT sub-band which is in a different frequency band from the downlink LBT sub-band where the PDCCH is located.