US 11,677,525 B2
Method for transmitting reference signal
Zhan Zhang, Beijing (CN); Majid Gerami, Lund (SE); Niklas Andgart, Södra Sandby (SE); and Mårten Sundberg, Årsta (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Apr. 12, 2021, as Appl. No. 17/228,300.
Application 17/228,300 is a continuation of application No. 16/088,891, granted, now 10,999,029, previously published as PCT/CN2018/085342, filed on May 2, 2018.
Claims priority of application No. PCT/CN2017/097238 (WO), filed on Aug. 11, 2017.
Prior Publication US 2021/0234653 A1, Jul. 29, 2021
Int. Cl. H04L 5/00 (2006.01); H04W 4/70 (2018.01)
CPC H04L 5/0048 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0051 (2013.01); H04W 4/70 (2018.02)] 18 Claims
OG exemplary drawing
 
1. A method in a base station, comprising:
configuring User Equipment (UE)-specific Reference Signal (UE-RS) corresponding to a set of antenna ports in two or more groups of Orthogonal Frequency Division Multiplexing (OFDM) symbols on a short Physical Downlink Sharing CHannel (sPDSCH), wherein:
indices of subcarriers in frequency domain used for UE-RS transmission are fully different between at least two consecutive groups of OFDM symbols in time domain; and
short Transmission Time Intervals (sTTIs) in the time domain used for UE-RS transmission are different between the at least two consecutive groups of OFDM symbols; and
transmitting the UE-RS to a user equipment.