US 11,658,785 B2
Method for transmitting and receiving phase tracking reference signal in wireless communication system, and apparatus therefor
Kyuseok Kim, Seoul (KR); Hyungtae Kim, Seoul (KR); and Jiwon Kang, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Apr. 1, 2022, as Appl. No. 17/711,289.
Application 17/711,289 is a continuation of application No. PCT/KR2020/013516, filed on Oct. 5, 2020.
Claims priority of application No. 10-2019-0122728 (KR), filed on Oct. 3, 2019; and application No. 10-2019-0143040 (KR), filed on Nov. 8, 2019.
Prior Publication US 2022/0224482 A1, Jul. 14, 2022
Int. Cl. H04W 72/12 (2009.01); H04L 5/00 (2006.01)
CPC H04L 5/0048 (2013.01) [H04W 72/1289 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of receiving, by a user equipment (UE), a physical downlink shared channel (PDSCH) in a wireless communication system, the method comprising:
receiving configuration information via a RRC signaling, wherein the configuration information includes information related to the PDSCH;
receiving downlink control information (DCI) scheduling the PDSCH, based on the configuration information,
wherein the DCI includes (i) a frequency domain resource assignment field, (ii) a transmission configuration indication (TCI) field and (iii) an antenna port field; and
receiving the PDSCH in resource blocks assigned based on the frequency domain resource assignment field,
wherein, based on a first TCI state and a second TCI state being indicated via the TCI field, the assigned resource blocks include (i) first resource blocks related to the first TCI state and (ii) second resource blocks related to the second TCI state,
wherein the first resource blocks and the second resource blocks do not overlap with each other in the assigned resource blocks,
wherein the method further comprises receiving a phase tracking reference signal (PTRS),
wherein the PTRS is mapped to a resource element and is received, and
wherein, based on (i) resource blocks related to each of the plurality of TCI states not overlapping with each other in the assign resource blocks, (ii) one or more demodulation reference signal (DMRS) ports within a same code division multiplexing (CDM) group being indicated based on the antenna port field and (iii) an antenna port of the PTRS being related to a DMRS port with a lowest index among the one or more DMRS ports:
(a) for each of the plurality of TCI states, a frequency density of the PTRS is determined based on a number of resource blocks related to each of the plurality of TCI states,
(b) a resource element mapping of the PTRS is associated with the resource blocks related to each of the plurality of TCI states.