US 12,081,318 B2
Signaling aspects for indication of co-scheduled DMRS ports in MU-MIMO
Ankit Bhamri, Langen (DE); and Hidetoshi Suzuki, Kanagawa (JP)
Assigned to Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Filed on Jul. 11, 2023, as Appl. No. 18/350,624.
Application 18/350,624 is a continuation of application No. 17/722,208, filed on Apr. 15, 2022, granted, now 11,742,975.
Application 17/722,208 is a continuation of application No. 16/834,240, filed on Mar. 30, 2020, granted, now 11,349,590, issued on May 31, 2022.
Application 16/834,240 is a continuation of application No. PCT/EP2018/075011, filed on Sep. 17, 2018.
Claims priority of application No. 17194653 (EP), filed on Oct. 3, 2017.
Prior Publication US 2023/0353270 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 76/27 (2018.01); H04J 13/10 (2011.01); H04J 13/12 (2011.01); H04L 5/00 (2006.01); H04L 5/10 (2006.01); H04L 27/26 (2006.01)
CPC H04J 13/102 (2013.01) [H04J 13/12 (2013.01); H04L 5/0051 (2013.01); H04L 5/10 (2013.01); H04L 27/2607 (2013.01); H04W 76/27 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A user equipment for transmitting and/or receiving data in layers to/from a base station using multiple antennas in a mobile communication system, comprising
circuitry which, in operation,
receives, from the base station, a parameter defining a configuration for assigning to ports respective resources for carrying reference signals, the resources being grouped in a plurality of code division multiplexing (CDM) groups, and
receives from the base station, control information indicating one of a set of layer-to-port mapping combinations which is to be applied for arranging reference signals on ports of at least one CDM group for data transmission and/or reception,
wherein the control information additionally indicates co-scheduling information for the at least one and/or at least a different CDM group of the plurality of CDM groups for the same data transmission and/or reception, wherein the plurality of CDM groups are consecutively indexed and wherein the ports of each of the plurality of CDM groups are consecutively indexed, such that the indexes of the ports increase with the indexes of the plurality of CDM groups for a case of one-symbol demodulation reference signal (DMRS).