US 12,273,290 B2
Antenna port determination based on maximum number of transmission layers of bandwidth part
Youngwoo Kwak, Woodbury, NY (US); Esmael Hejazi Dinan, McLean, VA (US); Yunjung Yi, Vienna, VA (US); and Hua Zhou, Vienna, VA (US)
Assigned to Ofinno, LLC, Reston, VA (US)
Filed by Ofinno, LLC, Reston, VA (US)
Filed on Feb. 27, 2023, as Appl. No. 18/114,530.
Application 18/114,530 is a continuation of application No. 17/093,379, filed on Nov. 9, 2020, granted, now 11,626,948.
Claims priority of provisional application 62/932,075, filed on Nov. 7, 2019.
Prior Publication US 2023/0224116 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 72/04 (2023.01); H04L 5/00 (2006.01); H04W 24/10 (2009.01); H04W 72/23 (2023.01); H04W 72/51 (2023.01)
CPC H04L 5/0048 (2013.01) [H04W 72/23 (2023.01); H04W 72/51 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting, by a base station to a wireless device, one or more radio resource control (RRC) messages comprising configuration parameters indicating:
a bandwidth part (BWP), of a cell, associated with a maximum number of transmission layers;
a plurality of demodulation reference signal (DMRS) ports;
a maximum length of a DMRS; and
a position indication for the plurality of DMRS ports;
transmitting, to the wireless device, a downlink control information comprising an antenna port indication value;
determining a subset of DMRS ports, from the plurality of DMRS ports, based on
the maximum number of transmission layers associated with the BWP; and
the position indication and the maximum length of the DMRS;
selecting, based on the antenna port indication value, one or more DMRS ports from the subset of DMRS ports; and
transmitting, to the wireless device via the BWP, a transport block with the one or more selected DMRS ports and with a number of transmission layers, wherein the number is less than or equal to the maximum number in response to the BWP being associated with the maximum number of transmission layers.