US 12,452,857 B2
Method and user equipment for cross-carrier scheduling from secondary cell to primary cell
Chi-Hsuan Hsieh, Hsin-Chu (TW); Yi-Ju Liao, Hsin-Chu (TW); Wei-De Wu, Hsin-Chu (TW); Pei-Kai Liao, Hsin-Chu (TW); and Chia-Hao Yu, Hsin-Chu (TW)
Assigned to MediaTek Inc., Hsinchu (TW)
Filed by MEDIATEK INC., Hsin-Chu (TW)
Filed on Mar. 8, 2022, as Appl. No. 17/689,982.
Claims priority of provisional application 63/248,592, filed on Sep. 27, 2021.
Claims priority of provisional application 63/230,130, filed on Aug. 6, 2021.
Claims priority of provisional application 63/171,129, filed on Apr. 6, 2021.
Prior Publication US 2022/0322384 A1, Oct. 6, 2022
Int. Cl. H04W 72/1263 (2023.01); H04L 1/00 (2006.01); H04L 27/26 (2006.01); H04W 24/08 (2009.01); H04W 72/0446 (2023.01); H04W 72/20 (2023.01)
CPC H04W 72/1263 (2013.01) [H04L 1/0038 (2013.01); H04L 27/26025 (2021.01); H04W 24/08 (2013.01); H04W 72/0446 (2013.01); H04W 72/20 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
connecting, by a user equipment (UE), to a primary cell and a secondary cell, wherein a cross-carrier scheduling (CCS) is configured between the primary cell and the secondary cell; and
monitoring, by the UE, physical downlink control channels (PDCCHs) from both the primary cell and the secondary cell in a same slot when the UE is a first type UE, and ignoring, by the UE, the PDCCHs from the secondary cell in the same slot when the UE is a second type UE, wherein when the UE is the second type UE, and when at least one common search space (CSS) set on the primary cell is configured to overlap with at least one UE specific search space (USS) set on the secondary cell, which is for scheduling the primary cell, dropping, by the second type UE, the at least one USS set on the secondary cell, and wherein the first type UE is configured not to support CCS and the second type UE is configured to support CCS.