US 12,218,869 B2
Sounding reference transmission
Sebastian Faxér, Järfälla (SE); and Andreas Nilsson, Gothenburg (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Mar. 30, 2023, as Appl. No. 18/128,580.
Application 18/128,580 is a continuation of application No. 17/679,531, filed on Feb. 24, 2022, granted, now 11,632,214.
Application 17/679,531 is a continuation of application No. 16/652,597, granted, now 11,265,124, issued on Mar. 1, 2022, previously published as PCT/EP2018/076649, filed on Oct. 1, 2018.
Claims priority of provisional application 62/566,604, filed on Oct. 2, 2017.
Prior Publication US 2023/0299907 A1, Sep. 21, 2023
Int. Cl. H04L 5/00 (2006.01); H04B 7/0456 (2017.01); H04W 72/23 (2023.01); G06F 3/01 (2006.01); H04J 11/00 (2006.01)
CPC H04L 5/0048 (2013.01) [H04B 7/0456 (2013.01); H04W 72/23 (2023.01); G06F 3/011 (2013.01); H04J 11/0026 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method performed by a wireless device for performing sounding reference signal (SRS) transmission, the method comprising:
receiving in a radio resource control (RRC) message an indication for one or more SRS resource sets to be configured, the message including a precoding indicator;
receiving in a downlink control information (DCI) an indication of a selected one of the one or more SRS resource sets to use for a SRS transmission;
determining that the precoding indicator indicates non-codebook based precoding;
as a result of determining that the precoding indicator indicates non-codebook based precoding, determining a precoder for the SRS transmission based on a measurement of a downlink (DL) reference signal and based on the selected SRS resource set and the precoding indicator; and
transmitting the SRS based on the determination.