US 12,170,555 B2
Power control for new radio uplink single-user multiple-input-multiple-output communication
Niklas Wernersson, Stockholm (SE); and Robert Mark Harrison, Plano, TX (US)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed on May 15, 2023, as Appl. No. 18/197,471.
Application 18/197,471 is a continuation of application No. 16/653,402, filed on Oct. 15, 2019, granted, now 11,695,458.
Application 16/653,402 is a continuation of application No. 16/257,538, filed on Jan. 25, 2019, granted, now 10,476,567, issued on Nov. 12, 2019.
Application 16/257,538 is a continuation of application No. PCT/IB2019/050075, filed on Jan. 4, 2019.
Claims priority of provisional application 62/654,286, filed on Apr. 6, 2018.
Prior Publication US 2023/0291447 A1, Sep. 14, 2023
Int. Cl. H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01); H04W 52/14 (2009.01); H04W 72/044 (2023.01)
CPC H04B 7/0486 (2013.01) [H04B 7/0626 (2013.01); H04B 7/0639 (2013.01); H04L 5/0048 (2013.01); H04L 25/0226 (2013.01); H04W 52/146 (2013.01); H04W 72/0473 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A User Equipment (UE) having a plurality of transmit chains that do not support relative transmit phase continuity, the UE comprising:
processing circuitry configured to:
derive a power P to be used for uplink power control for a physical uplink shared channel transmission; and
determine a power to be used for a set of antenna ports based on the power P according to a rule that depends on whether the UE is utilizing codebook based transmission or non-codebook based transmission for the physical uplink shared channel transmission, the set of antenna ports being antenna ports on which the physical uplink shared channel transmission is transmitted with non-zero power,
wherein the rule is such that, for a case of codebook based transmission, in order to determine the power to be used for the set of antenna ports based on the power P according to the rule, the processing circuitry is further configured to:
derive a second power P′ by scaling the power P with a ratio, R, wherein the ratio R is a first number antenna ports divided by a second number of antenna ports, wherein the first number of antenna ports is a number of antenna ports on which the physical uplink shared channel transmission is transmitted with non-zero power, and the second number of antenna ports is determined according to a multi-antenna transmission configuration as a third number of spatial layers indicated by a gNB; and
equally divide the second power P′ across the set of antenna ports on which the physical uplink shared channel transmission is transmitted with non-zero power.