	US 11,757,513 B2
	Multi-resolution CSI feedback
Shiwei Gao, Nepean (CA); Robert Mark Harrison, Grapevine, TX (US); Siva Muruganathan, Stittsville (CA); Mattias Frenne, Uppsala (SE); and Stephen Grant, Pleasanton, CA (US)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on May 27, 2021, as Appl. No. 17/332,527.
Application 17/332,527 is a continuation of application No. 16/566,426, filed on Sep. 10, 2019, granted, now 11,070,272.
Application 16/566,426 is a continuation of application No. 15/543,766, granted, now 10,447,368, issued on Oct. 15, 2019, previously published as PCT/SE2017/050501, filed on May 15, 2017.
Claims priority of provisional application 62/335,774, filed on May 13, 2016.
Prior Publication US 2021/0288706 A1, Sep. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/06 (2006.01); H04B 17/309 (2015.01); H04B 7/0452 (2017.01); H04W 76/27 (2018.01); H04L 25/02 (2006.01); H04L 5/00 (2006.01); H04B 7/0456 (2017.01)

CPC H04B 7/0626 (2013.01) [H04B 7/0452 (2013.01); H04B 7/0456 (2013.01); H04B 7/0634 (2013.01); H04B 17/309 (2015.01); H04L 5/0023 (2013.01); H04L 5/0048 (2013.01); H04L 5/0051 (2013.01); H04L 5/0057 (2013.01); H04L 25/0226 (2013.01); H04W 76/27 (2018.02); H04L 5/0053 (2013.01); H04L 5/0094 (2013.01)]

20 Claims

1. A method performed by a Radio Access Network, RAN, node, equipped with multiple transmit antenna ports for transmitting data to a radio device in a communication system and for receiving channel feedback from the radio device, the method comprising

sending, to the radio device, information about a reference signal resource, a first feedback type and a second feedback type;

sending, to the radio device, a feedback request for measurement and feedback of the first feedback type or the second feedback type; and

transmitting at least one reference signal in the reference signal resource; and

receiving, from the radio device, a report of the requested feedback type.