US Patent No. 10,560,901

METHOD AND APPARATUS HAVING POWER CONTROL FOR GRANT-FREE UPLINK TRANSMISSION


Patent No. 10,560,901
Issue Date February 11, 2020
Title Method And Apparatus Having Power Control For Grant-free Uplink Transmission
Inventorship Hyejung Jung, Northbrook, IL (US)
Ebrahim MolavianJazi, Lincolnwood, IL (US)
Hossein Bagheri, Urbana, IL (US)
Vijay Nangia, Woodridge, IL (US)
Assignee Lenovo (Singapore) Pte. Ltd., New Tech Park (SG)

Claim of US Patent No. 10,560,901

1. A method in a user equipment, the method comprising:receiving a first higher layer configuration message including information of a mapping between a set of sounding reference signal indications and a set of power control parameters, when the user equipment is configured with more than one sounding reference signal resource for uplink data channel transmission;
receiving a second higher layer configuration message including a configured grant uplink transmission configuration, wherein the configured grant uplink transmission configuration does not include a sounding reference signal indication;
receiving an activation message in downlink control information for the configured grant uplink transmission configuration;
in response to receiving uplink grant downlink control information including a sounding reference signal resource indication field, determining power control parameters for the configured grant uplink transmission based on the sounding reference signal resource indication, wherein the user equipment determines the power control parameters for the sounding reference signal resource indication based on the mapping indicated in the first higher layer configuration message;
in response to being configured with only a single sounding reference signal resource for uplink data channel transmission or if a sounding reference signal indication is not present in the uplink grant downlink control information, determining the power control parameters for the configured grant uplink transmission based on a direct semi-static configuration;
transmitting the configured grant uplink transmission using the determined power control parameters.