US 12,238,786 B2
Enhanced downlink control information detection
Seyed Ali Akbar Fakoorian, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); Srinivas Yerramalli, San Diego, CA (US); Chih-Hao Liu, San Diego, CA (US); and Tamer Kadous, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 13, 2022, as Appl. No. 17/943,851.
Application 17/943,851 is a division of application No. 16/365,505, filed on Mar. 26, 2019, granted, now 11,470,655.
Claims priority of provisional application 62/648,599, filed on Mar. 27, 2018.
Prior Publication US 2023/0007685 A1, Jan. 5, 2023
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01); H04W 74/0833 (2024.01); H04W 76/27 (2018.01)
CPC H04W 74/085 (2013.01) [H04L 5/0032 (2013.01); H04L 5/0035 (2013.01); H04L 5/0051 (2013.01); H04L 5/0053 (2013.01); H04L 27/2692 (2013.01); H04W 76/27 (2018.02)] 17 Claims
OG exemplary drawing
 
1. A method for wireless communications at a user equipment (UE), comprising:
performing a preamble detection procedure on a shared radio frequency spectrum band for a plurality of transmission and reception points (TRPs), wherein each TRP of the plurality of TRPs is associated with a control resource set of a plurality of control resource sets for downlink control information and the preamble detection procedure is based at least in part on a unique preamble sequence for each control resource set of an associated TRP that passed a listen before talk procedure for the shared radio frequency spectrum band, wherein performing the preamble detection procedure comprises:
detecting, for at least one control resource set of the plurality of control resource sets, a first preamble within a bandwidth part of a data transmission and a second preamble outside of the bandwidth part of the data transmission, wherein the first preamble and the second preamble are detected at different resources in a frequency domain;
receiving the downlink control information using one or more control resource sets of the plurality of control resource sets; the one or more control resource sets selected based at least in part on the preamble detection procedure; and
receiving the data transmission associated with the downlink control information.
 
10. A user equipment (UE), comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:
perform a preamble detection procedure on a shared radio frequency spectrum band for a plurality of transmission and reception points (TRPs), wherein each TRP of the plurality of TRPs is associated with a control resource set of a plurality of control resource sets for downlink control information and the preamble detection procedure is based at least in part on a unique preamble sequence for each control resource set of an associated TRP that passed a listen before talk procedure for the shared radio frequency spectrum band, wherein, to perform the preamble detection procedure the one or more processors are individually or collectively operable to execute the code to cause the UE to:
detect, for at least one control resource set of the plurality of control resource sets, a first preamble within a bandwidth part of a data transmission and a second preamble outside of the bandwidth part of the data transmission, wherein the first preamble and the second preamble are detected at different resources in a frequency domain;
receive the downlink control information using one or more control resource sets of the plurality of control resource sets; the one or more control resource sets selected based at least in part on the preamble detection procedure; and
receive the data transmission based at least in part on the downlink control information.