US 12,224,966 B2
Code-division multiplexing (CDM) groups for multi-source transmission
Mattias Frenne, Uppsala (SE); Niklas Wernersson, Kungsängen (SE); Shiwei Gao, Nepean (CA); Sebastian Faxér, Stockholm (SE); Simon Järmyr, Skarpnäck (SE); and Siva Muruganathan, Stittsville (CA)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/421,585
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jan. 10, 2020, PCT No. PCT/IB2020/050179
§ 371(c)(1), (2) Date Jul. 8, 2021,
PCT Pub. No. WO2020/144637, PCT Pub. Date Jul. 16, 2020.
Claims priority of provisional application 62/790,531, filed on Jan. 10, 2019.
Prior Publication US 2022/0158805 A1, May 19, 2022
Int. Cl. H04L 5/00 (2006.01); H04J 13/18 (2011.01); H04W 72/23 (2023.01)
CPC H04L 5/0069 (2013.01) [H04J 13/18 (2013.01); H04L 5/0051 (2013.01); H04L 5/0053 (2013.01); H04W 72/23 (2023.01)] 32 Claims
OG exemplary drawing
 
1. A method for a user equipment (UE) to transmit or receive a plurality of physical data channels in a wireless network, the method comprising:
receiving, from the wireless network, an indication of a Transmission Configuration Indicator (TCI) state that includes the following:
a plurality of source reference signal (RS) pairs, each source RS pair comprising first and second source RS; and
for each source RS pair, a corresponding pair of quasi-colocation (QCL) relations between the first and second source RS and a single code-division multiplexing (CDM) group of demodulation reference signal (DM-RS) antenna ports,
wherein each source RS pair has a corresponding pair of QCL relations with a different CDM group than all other source RS pairs of the plurality; and
receiving or transmitting the plurality of physical data channels based on the QCL relations for the plurality of source RS pairs of the indicated TCI state.