US 12,193,104 B2
Method and apparatus for power savings at a user equipment
Chao He, Allen, TX (US); and Aris Papasakellariou, Houston, TX (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 9, 2022, as Appl. No. 17/654,228.
Application 17/654,228 is a continuation of application No. 16/268,300, filed on Feb. 5, 2019, granted, now 11,297,674.
Claims priority of provisional application 62/701,028, filed on Jul. 20, 2018.
Claims priority of provisional application 62/679,118, filed on Jun. 1, 2018.
Claims priority of provisional application 62/678,513, filed on May 31, 2018.
Claims priority of provisional application 62/630,597, filed on Feb. 14, 2018.
Prior Publication US 2022/0210866 A1, Jun. 30, 2022
Int. Cl. H04W 76/28 (2018.01); H04L 5/00 (2006.01); H04L 41/0896 (2022.01); H04W 52/02 (2009.01)
CPC H04W 76/28 (2018.02) [H04L 5/0048 (2013.01); H04L 41/0896 (2013.01); H04W 52/0235 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for a user equipment (UE) to receive first physical downlink control channels (PDCCHs), the method comprising:
receiving:
information for groups of secondary cells (SCells) and for indexes of SCells in each group of SCells from the groups of SCells,
information for a search space set for receptions of second PDCCHs on a primary cell, outside an On-duration of any discontinuous reception (DRX) cycle on the primary cell, according to a common search space,
information for a time offset, and
the second PDCCHs starting from the time offset before a start of On-duration for a next DRX cycle, wherein a PDCCH from the second PDCCHs provides a first downlink control information (DCI) format and wherein:
the first DCI format does not schedule transmission or reception of a channel that provides data information,
the first DCI format includes a bitmap, and
bits of the bitmap have a one-to-one mapping with the groups of SCells; and
determining, based on a value of a bit of the bitmap, whether or not to receive the first PDCCHs, wherein:
the bit of the bitmap maps to a group of SCells from the groups of SCells, and
the first PDCCHs provide DCI formats that schedule receptions of physical downlink shared channels (PDSCHs) or transmissions of physical uplink shared channels (PUSCHs), on an SCell in the group of SCells.