US 12,414,102 B2
Techniques for cross-carrier scheduling from a secondary cell to a primary cell
Kazuki Takeda, Tokyo (JP); Wanshi Chen, San Diego, CA (US); Peter Gaal, San Diego, CA (US); Yiqing Cao, Beijing (CN); Alberto Rico Alvarino, San Diego, CA (US); Mostafa Khoshnevisan, San Diego, CA (US); and Xiaoxia Zhang, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/758,489
Filed by QUALCOMM INCORPORATED, San Diego, CA (US)
PCT Filed Jan. 27, 2021, PCT No. PCT/CN2021/073960
§ 371(c)(1), (2) Date Jul. 7, 2022,
PCT Pub. No. WO2021/151382, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. PCT/CN2020/074063 (WO), filed on Jan. 29, 2020.
Prior Publication US 2023/0026760 A1, Jan. 26, 2023
Int. Cl. H04W 72/1263 (2023.01); H04L 1/00 (2006.01); H04L 1/1812 (2023.01); H04W 24/08 (2009.01); H04W 72/23 (2023.01)
CPC H04W 72/1263 (2013.01) [H04L 1/0038 (2013.01); H04L 1/1812 (2013.01); H04W 24/08 (2013.01); H04W 72/23 (2023.01); H04L 1/0007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for wireless communications at a user equipment (UE), comprising:
identifying that the UE is in communication with a primary cell and one or more secondary cells in a carrier aggregation configuration, wherein the primary cell is a cross-carrier scheduled cell and a first secondary cell is a cross-carrier scheduling cell;
monitoring respective UE-specific search spaces of the one or more secondary cells for control information in accordance with a shared search space monitoring configuration;
determining a limit corresponding to the shared search space monitoring configuration, wherein the limit is associated with a maximum number of blind decodes to be attempted by the UE, a maximum number of non-overlapping control channel elements, or both, across control channel candidates of the UE-specific search space of the first secondary cell;
receiving an indication of the limit from the first secondary cell, wherein determining the limit is based at least in part on receiving the indication;
receiving one or more downlink control information messages as a result of monitoring the UE-specific search space of the first secondary cell, wherein the one or more downlink control information messages schedule one or more data transmissions and include a cross-carrier scheduling indication that the one or more data transmissions are scheduled with the primary cell; and
communicating with the primary cell via the data transmission in accordance with at least one of the one or more downlink control information messages.