US 12,349,154 B2
Monitoring physical downlink control channel for small data transmission
Hsin-Hsi Tsai, Taipei (TW); Heng-Li Chin, Taipei (TW); Wan-Chen Lin, Taipei (TW); and Yung-Lan Tseng, Taipei (TW)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Mar. 8, 2022, as Appl. No. 17/689,347.
Claims priority of provisional application 63/158,813, filed on Mar. 9, 2021.
Prior Publication US 2022/0295540 A1, Sep. 15, 2022
Int. Cl. H04W 72/23 (2023.01); H04W 24/08 (2009.01); H04W 72/1273 (2023.01); H04W 74/0833 (2024.01); H04W 76/20 (2018.01); H04W 76/30 (2018.01)
CPC H04W 72/23 (2023.01) [H04W 24/08 (2013.01); H04W 72/1273 (2013.01); H04W 74/0833 (2013.01); H04W 76/20 (2018.02); H04W 76/30 (2018.02)] 16 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) for monitoring a physical downlink control channel (PDCCH), the method comprising:
receiving, while in a radio resource control (RRC)_CONNECTED state, from a base station (BS), an RRC release message that includes a small data transmission (SDT) configuration;
transitioning to an RRC_INACTIVE state from the RRC_CONNECTED state in response to receiving the RRC release message;
initiating an SDT procedure based on the SDT configuration;
determining whether an SDT search space set is received from the BS;
monitoring the PDCCH by monitoring the SDT search space set during the SDT procedure when the SDT search space set is received from the BS; and
when the SDT search space set is not received from the BS and the SDT procedure comprises a random access (RA)-based SDT procedure, monitoring the PDCCH by monitoring a common search space (CSS) set that is associated with an RA search space during the RA-based SDT procedure, wherein
the SDT configuration comprises a configured grant (CG) configuration for SDT, a signaling radio bearer (SRB) configuration for SDT, and a data radio bearer (DRB) configuration for SDT.