US Patent No. 10,925,116


Patent No. 10,925,116
Issue Date February 16, 2021
Title Beam Indication For Semi-persistent And Grant-free Transmissions
Inventorship Yushu Zhang, Beijing (CN)
Gang Xiong, Beaverton, OR (US)
Guotong Wang, Beijing (CN)
Alexei Vladimirovich Davydov, Nizhny Novgorod (RU)
Assignee Apple Inc., Cupertino, CA (US)

Claim of US Patent No. 10,925,116

1. An apparatus of a user equipment (UE), the apparatus comprising:processing circuitry, wherein to configure the UE for semi-persistent scheduling (SPS) transmission or grant-free transmission in a 5G New Radio (NR) communication network, wherein the processing circuitry is configured to:
decode radio resource control (RRC) signaling from a base station, wherein the RRC signaling configures a plurality of transmission configuration information (TCI) candidates, wherein the plurality of TCI candidates indicate a first set of transmission beams for an initial transmission on an SPS physical downlink shared channel (PDSCH), and wherein the initial transmission uses an initial transmission beam that is selected based on a TCI beam index;
decode a medium access control (MAC) control element (MAC CE) from the base station, wherein the MAC CE indicates a re-configuration of the plurality of TCI candidates to include at least a second set of transmission beams for the SPS PDSCH;
select a transmission beam from the second set of transmission beams based on the TCI beam index; and
decode downlink data received in a subsequent transmission via the selected transmission beam on the SPS PDSCH; and
memory coupled to the processing circuitry, wherein the memory is configured to store the first and second sets of transmission beams.