US 12,021,581 B2
Enabling non-coherent joint transmission
Fang Yuan, Beijing (CN); Mostafa Khoshnevisan, San Diego, CA (US); Wooseok Nam, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); Tao Luo, San Diego, CA (US); and Jing Sun, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/758,105
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Feb. 17, 2021, PCT No. PCT/CN2021/076665
§ 371(c)(1), (2) Date Jun. 28, 2022,
PCT Pub. No. WO2021/164693, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. PCT/CN2020/076181 (WO), filed on Feb. 21, 2020.
Prior Publication US 2023/0025805 A1, Jan. 26, 2023
Int. Cl. H04B 7/04 (2017.01); H04B 7/0404 (2017.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/0404 (2013.01) [H04B 7/0456 (2013.01); H04B 7/063 (2013.01); H04B 7/0634 (2013.01); H04B 7/0639 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A user equipment (UE) for wireless communication, comprising:
memory; and
one or more processors coupled to the memory, the one or more processors configured to:
receive downlink control information that indicates a transmit precoding matrix indicator, that identifies a precoding matrix, and a set of demodulation reference signal (DMRS) antenna ports, wherein:
a first association is between a first set of antenna indices of the precoding matrix, that form a first transmission group, and a first code-division multiplexing (CDM) group of the set of DMRS antenna ports,
a second association is between a second set of antenna indices of the precoding matrix, that form a second transmission group, and a second CDM group of the set of DMRS antenna ports, and
the first set of antenna indices is different than the second set of antenna indices and the first CDM group is different than the second CDM group; and
transmit an uplink transmission according to the first association and the second association.