US 11,838,908 B2
Short control messages using index modulation on demodulation reference signals
Shay Landis, Hod Hasharon (IL); Assaf Touboul, Netanya (IL); Gideon Kutz, Ramat Hasharon (IL); and Ran Berliner, Kfar-Aviv (IL)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Mar. 5, 2021, as Appl. No. 17/194,140.
Prior Publication US 2022/0287016 A1, Sep. 8, 2022
Int. Cl. H04W 72/20 (2023.01); H04L 5/00 (2006.01); H04L 41/0806 (2022.01); H04W 72/0453 (2023.01)
CPC H04W 72/20 (2023.01) [H04L 5/0048 (2013.01); H04L 41/0806 (2013.01); H04W 72/0453 (2013.01)] 48 Claims
OG exemplary drawing
 
1. A method of wireless communication performed by a base station, the method comprising:
determining, by the base station, a configuration action for a served user equipment (UE) in communication with a network node;
generating, by the base station, a short control message associated with the configuration action;
mapping, by the base station, the short control message onto a set of inactive subcarrier resource elements (REs) of a demodulation reference signal (DMRS) sequence;
transmitting, by the base station, the DMRS sequence to the served UE, wherein the DMRS sequence includes the short control message within the set of inactive subcarrier REs of the DMRS sequence; and
wherein the mapping the short control message includes:
selecting an initialization seed from a set of available initialization seeds associated with generation of the DMRS sequence;
generating the DMRS sequence, wherein the DMRS sequences generated includes the set of inactive subcarrier REs associated with the initialization seed selected; and
mapping the short control message to the set of known inactive subcarrier REs associated with the initialization seed.