US 12,250,040 B2
Systems and methods for early CSI feedback in NR
Siva Muruganathan, Stittsville (CA); Sebastian Faxér, Stockholm (SE); Mattias Frenne, Uppsala (SE); and Shiwei Gao, Nepean (CA)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/763,789
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 25, 2020, PCT No. PCT/IB2020/059012
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/059239, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/907,176, filed on Sep. 27, 2019.
Prior Publication US 2022/0407576 A1, Dec. 22, 2022
Int. Cl. H04B 7/06 (2006.01); H04B 17/336 (2015.01); H04L 5/00 (2006.01); H04W 74/0833 (2024.01)
CPC H04B 7/0626 (2013.01) [H04B 7/0632 (2013.01); H04B 7/0639 (2013.01); H04B 17/336 (2015.01); H04L 5/0051 (2013.01); H04W 74/0833 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A method performed by a wireless device for providing early Channel State Information, CSI, reporting, the method comprising:
receiving, from a network, information related to (I) a CSI Reference Signal, CSI-RS, for channel measurement, (II) a CSI Interference Measurement, CSI-IM, resource, or (III) both (I) and (II), to be used for acquiring early CSI;
receiving, from the network, one or more of the CSI-RS and the CSI-IM resource;
measuring (A) a channel based on the CSI-RS, (B) interference based on at least one of the CSI-RS and the CSI-IM resource, or (C) both (A) and (B);
computing CSI based on at least one of the measured channel or the measured interference; and
sending a CSI report containing the CSI to the network during a random access procedure;
wherein the information related to (I) the CSI-RS for channel measurement, (II) the CSI-IM resource, or (III) both (I) and (II) comprises one or more of the group consisting of:
a time and frequency position of the CSI-RS;
a number of CSI-RS ports where the number of CSI-RS ports is more than one;
a scrambling sequence of the CSI-RS;
an indication of: (a) one or more default CSI reporting settings for a CSI, (b) one or more default CSI resource settings containing information of the CSI-RS, or (c) both (a) and (b); and
is carried in a System Information Block, SIB.