US 12,413,362 B2
Joint resource map design of DM-RS and PT-RS
Zhao Wang, Solna (SE); Lars Lindbom, Karlstad (SE); Vicent Molés Cases, Nules (ES); and Karl Werner, Segeltorp (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Feb. 28, 2024, as Appl. No. 18/589,589.
Application 18/589,589 is a continuation of application No. 18/191,618, filed on Mar. 28, 2023, granted, now 11,949,617.
Application 18/191,618 is a continuation of application No. 16/073,680, abandoned, previously published as PCT/SE2018/050629, filed on Jun. 15, 2018.
Claims priority of provisional application 62/521,078, filed on Jun. 16, 2017.
Prior Publication US 2024/0204945 A1, Jun. 20, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01); H04W 72/0446 (2023.01); H04W 72/12 (2023.01)
CPC H04L 5/0048 (2013.01) [H04L 5/0042 (2013.01); H04L 5/0051 (2013.01); H04W 72/0446 (2013.01); H04W 72/12 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for use in a wireless device in a wireless communication system for transmitting a phase-tracking reference signal, PT-RS, the method comprising:
obtaining information about a position in a time domain of a scheduled first demodulation reference signal, DM-RS, symbol in a slot;
obtaining information about a position of a first time symbol in the slot scheduled for data transmission;
obtaining information about a position of a last time symbol in the slot scheduled for data transmission;
obtaining information about the PT-RS density;
mapping of PT-RS symbols to resource elements, REs, within the slot based on an equation determined by the obtained information about the position in the time domain of the scheduled first DM-RS symbol in the slot, the position of the first time symbol in the slot scheduled for data transmission, the position of the last time symbol in the slot scheduled for data transmission, and the PT-RS density; and
transmitting PT-RS symbols within the slot.