US 11,943,018 B2
Hybrid closed-loop multiple-input multiple-output and transparent diversity schemes
Yi Huang, San Diego, CA (US); Gokul Sridharan, Sunnyvale, CA (US); Wei Yang, San Diego, CA (US); Taesang Yoo, San Diego, CA (US); and Peter Gaal, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jan. 27, 2023, as Appl. No. 18/160,875.
Application 18/160,875 is a continuation of application No. 17/255,134, granted, now 11,641,225, previously published as PCT/US2019/038741, filed on Jun. 24, 2019.
Application 17/255,134 is a continuation of application No. 16/449,246, filed on Jun. 21, 2019, granted, now 10,673,500, issued on Jun. 2, 2020.
Claims priority of provisional application 62/689,801, filed on Jun. 25, 2018.
Prior Publication US 2023/0283331 A1, Sep. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/0456 (2017.01); H04B 7/0491 (2017.01); H04B 7/06 (2006.01); H04W 52/08 (2009.01)
CPC H04B 7/046 (2013.01) [H04B 7/0456 (2013.01); H04B 7/0486 (2013.01); H04B 7/0491 (2013.01); H04B 7/063 (2013.01); H04W 52/08 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a user equipment (UE), comprising:
a processor;
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from a base station, an indication that the UE is to use a closed-loop multiple-input multiple-output (MIMO) scheme for transmissions of uplink data via a plurality of antenna ports, wherein the plurality of antenna ports include a plurality of groups of antenna ports, wherein antenna ports within a group of antenna ports are phase coherent with each other antenna port belonging to the group of antenna ports, and wherein the antenna ports within the group of antenna ports are phase incoherent with antenna ports that belong to at least one other group of antenna ports;
generate, from the uplink data, a plurality of output signals that correspond to the plurality of antenna ports based at least in part on application of the closed-loop MIMO scheme for the plurality of groups of antenna ports; and
transmit the plurality of output signals via the plurality of antenna ports.