US 12,279,237 B2
Method and apparatus for transmitting and receiving group downlink control channel in wireless communication system
Seung Hoon Choi, Seongnam-si (KR); Tae Hyoung Kim, Seoul (KR); Young Bum Kim, Seoul (KR); Sung Jin Park, Incheon (KR); and Jin Young Oh, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Dec. 2, 2020, as Appl. No. 17/109,555.
Application 17/109,555 is a continuation of application No. 16/201,200, filed on Nov. 27, 2018, granted, now 10,863,503, issued on Dec. 8, 2020.
Claims priority of application No. 10-2017-0128266 (KR), filed on Sep. 29, 2017.
Prior Publication US 2021/0092739 A1, Mar. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/0446 (2023.01); H04W 72/23 (2023.01)
CPC H04W 72/0446 (2013.01) [H04W 72/23 (2023.01)] 12 Claims
OG exemplary drawing
 
1. A method performed by a terminal in a wireless communication system, the method comprising:
receiving, from a base station, a radio resource control (RRC) message including first information on a plurality of slot format combinations, second information on an identification (ID) of a serving cell for which the plurality of slot format combinations are applicable, third information on a slot format indicator radio network temporary identifier (SFI-RNTI), and fourth information on a reference subcarrier spacing for the plurality of slot format combinations, wherein a slot format combination among the plurality of slot format combinations includes at least one slot format, and wherein each slot format of the at least one slot format indicates each symbol in a slot as one symbol from among symbols comprising a downlink symbol, an uplink symbol, and a flexible symbol;
receiving, from the base station, first downlink control information (DCI) including a slot format indicator (SFI), wherein a cyclic redundancy check (CRC) of the first DCI is scrambled by the SFI-RNTI;
identifying a first slot format combination corresponding to the SFI among the plurality of slot format combinations, wherein the SFI is included in the first DCI scrambled by the SFI-RNTI and the SFI-RNTI is identified based on the third information included in the RRC message; and
communicating, with the base station on the serving cell based on the second information, in the at least one slot by applying the identified first slot format combination,
wherein the terminal receives a downlink signal in the flexible symbol in a first case that second DCI is received and indicates to receive the downlink signal in the flexible symbol,
wherein the terminal transmits an uplink signal in the flexible symbol in a second case that the second DCI is received and indicates to transmit the uplink signal in the flexible symbol, and
wherein the first DCI is received by a group common signaling for a plurality of terminals and the second DCI is received by a terminal-specific signaling.