US 12,193,043 B2
Method for transmitting and receiving data channel in wireless communication system, and apparatus therefor
Kyuseok Kim, Seoul (KR); Hyungtae Kim, Seoul (KR); Jiwon Kang, Seoul (KR); and Kilbom Lee, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 17/608,334
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed May 4, 2020, PCT No. PCT/KR2020/005869
§ 371(c)(1), (2) Date Nov. 2, 2021,
PCT Pub. No. WO2020/222605, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 10-2019-0051875 (KR), filed on May 2, 2019; application No. 10-2019-0055309 (KR), filed on May 10, 2019; and application No. 10-2019-0123426 (KR), filed on Oct. 4, 2019.
Prior Publication US 2022/0217729 A1, Jul. 7, 2022
Int. Cl. H04W 72/542 (2023.01); H04L 5/00 (2006.01); H04W 72/1263 (2023.01); H04W 72/20 (2023.01); H04W 72/23 (2023.01)
CPC H04W 72/542 (2023.01) [H04L 5/0051 (2013.01); H04W 72/1263 (2013.01); H04W 72/20 (2023.01); H04W 72/23 (2023.01)] 9 Claims
OG exemplary drawing
 
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
reporting, to a base station, channel state information (Channel State Information);
receiving, from the base station, downlink control information (DCI) including i) a transmission configuration indication (TCI) field and ii) an antenna port field,
wherein an entry related to one or more Code Division Multiplexing (CDM) groups and one or more DeModulation Reference Signal (DMRS) ports is indicated based on the antenna port field, and
wherein a code point corresponding to one or more TCI states is indicated based on the TCI field of the DCI; and
receiving, from the base station, a phase tracking reference signal (PTRS) which is transmitted through an antenna port associated with a specific DMRS port among the one or more DMRS ports,
wherein, based on i) a number of the one or more TCI states corresponding to the code point being 2 and ii) a number of the one or more CDM groups including the one or more DMRS ports being 1, a number of antenna ports through which the PTRS is transmitted is determined as 1, and
wherein, based on i) the number of the one or more TCI states being 2 and ii) the number of the one or more CDM groups being 2:
a number of DMRS ports related to a first CDM group is 1,
a number of DMRS ports related to a second CDM group is 2, and
one of the one or more CDM groups includes a DMRS port 0 among the one or more DMRS ports based on the entry.