Patent ID: 11949617
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for use in a network node 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;
transmitting PT-RS symbols within the slot, the position of the PT-RS symbols depending on the position in the time domain of the scheduled first DM-RS symbol; and
determining potential positions of additional DM-RS symbols, the potential positions of additional DM-RS symbols being a subset of the positions of the PT-RS symbols.