US Patent No. 10,716,125

SOUNDING REFERENCE SIGNAL TRIGGERING FOR ENHANCED CARRIER AGGREGATION


Patent No. 10,716,125
Issue Date July 14, 2020
Title Sounding Reference Signal Triggering For Enhanced Carrier Aggregation
Inventorship Alberto Rico Alvarino, San Diego, CA (US)
Wanshi Chen, San Diego, CA (US)
Peter Gaal, San Diego, CA (US)
Assignee QUALCOMM Incorporated, San Diego, CA (US)

Claim of US Patent No. 10,716,125

1. A method of wireless communication performed by a user equipment (UE), comprising:identifying a carrier aggregation (CA) configuration and an aperiodic sounding reference signal (A-SRS) configuration of the UE, the CA configuration comprising one or more component carriers (CCs) on which the UE is configured to perform uplink (UL) data transmissions and the A-SRS configuration comprising one or more CCs on which the UE is configured to transmit A-SRS and not perform UL data transmissions;
receiving a resource assignment on a downlink (DL) CC in the CA configuration, the resource assignment comprising a sounding reference signal radio network temporary identifier (SRS-RNTI);
detecting a trigger based at least in part on the SRS-RNTI, wherein the SRS-RNTI triggers a plurality of A-SRS transmissions in a plurality of UL resources of the A-SRS configuration;
determining at least one CC of the one or more CCs of the A-SRS configuration for transmitting one or more A-SRS transmissions based at least in part on a downlink control information (DCI) of the resource assignment; and
transmitting the one or more A-SRS transmissions on the determined at least one CC of the one or more CCs of the A-SRS configuration.