US 12,439,407 B2
Method and apparatus for data transmission in network cooperative communications
Youngrok Jang, Gyeonggi-do (KR); Ameha Tsegaye Abebe, Gyeonggi-do (KR); Seongmok Lim, Gyeonggi-do (KR); and Hyoungju Ji, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd., Seoul (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on May 5, 2022, as Appl. No. 17/737,215.
Claims priority of application No. 10-2021-0058361 (KR), filed on May 6, 2021.
Prior Publication US 2022/0394742 A1, Dec. 8, 2022
Int. Cl. H04W 72/1273 (2023.01); H04L 1/08 (2006.01); H04W 72/20 (2023.01); H04W 72/23 (2023.01)
CPC H04W 72/1273 (2013.01) [H04L 1/08 (2013.01); H04W 72/23 (2023.01)] 16 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a communication system, the method comprising:
receiving, via higher layer signaling, single frequency network (SFN) scheme configuration information, information on a set of transmission configuration indication (TCI) states, and TCI mapping information indicating cyclic mapping or sequential mapping;
receiving a medium access control-control element (MAC-CE) to activate TCI states among the set of TCI states, wherein the MAC-CE maps the activated TCI states to codepoints of a TCI field in downlink control information (DCI);
receiving the DCI including scheduling information for a physical downlink shared channel (PDSCH), wherein the DCI further includes the TCI field, and wherein a codepoint of the TCI field is mapped to a first TCI state and a second TCI state among the activated TCI states;
identifying PDSCH reception occasions based on the scheduling information; and
receiving PDSCH repetitions on the PDSCH reception occasions,
wherein a PDSCH repetition is received on a PDSCH reception occasion by using the first TCI state and the second TCI state based on the SFN scheme configuration information,
wherein, in case that the DCI is received on a physical downlink control channel (PDCCH) using a third TCI state and a fourth TCI state or the DCI further includes another TCI field mapped to the third TCI state and the fourth TCI state among the activated TCI states:
another PDSCH repetition is received on another PDSCH reception occasion by using the third TCI state and the fourth TCI state based on the SFN scheme configuration information,
in case that the TCI mapping information indicates the cyclic mapping, a combination of the first TCI state and the second TCI state and a combination of the third TCI state and the fourth TCI state are cyclically used, and
in case that the TCI mapping information indicates the sequential mapping, the combination of the first TCI state and the second TCI state and the combination of the third TCI state and the fourth TCI state are sequentially used.