name: PT-RS
full_form: Phase Tracking Reference Signal
context: with the higher layer parameter maxNrofPorts in PTRS-UplinkConfig set to 'n1', the PT-RS port is associated with the one of DM-RS ports indicated by DCI field PTRS-DMRS association for the codeword with the higher MCS. If the MCS indices of the two codewords are the same, the PT-RS antenna port is associated with codeword 0. When a codeword is scheduled to transmit PUSCH for retransmission, the MCS for determining PT-RS association to codeword is obtained from the DCI for the same transport block in the initial transmission. - if the UE is configured with the higher layer parameter maxNrofPorts in PTRS-UplinkConfig set to 'n2', each PT-RS port is associated with the one of DM-RS pors indicated by DCI field PTRS-DMRS association. [PUSCH antenna port 1000, 1001, 1004 and 1005 share PT-RS port 0, and PUSCH antenna port 1002, 1003, 1006 and 1007 share PT-RS port 1.] When the UE is scheduled with Qp={1,2} PT-RS port(s) in uplink and the number of scheduled layers is , - If the UE is
description: Phase Tracking Reference Signal (PT-RS) is a parameter used in the context of PUSCH transmission, specifically for determining PT-RS association to codeword based on MCS indices and DCI field PTRS-DMRS association.
explanation: The provided text describes PT-RS as a parameter used within a specific telecommunications process (PUSCH transmission). Its role is to define associations based on various signal characteristics, indicating its function as a configurable element within the system.
section_title: 6.2.3.1UE PT-RS transmission procedure when transform precoding is not enabled
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