US 12,438,683 B2
Beam group-based downlink transmit beam indication
Juha Karjalainen, Sotkamo (FI); Samuli Turtinen, Ii (FI); Sami-Jukka Hakola, Kempele (FI); Keeth Saliya Jayasinghe Laddu, Espoo (FI); Timo Koskela, Oulu (FI); and Mihai Enescu, Espoo (FI)
Assigned to Nokia Technologies Oy, Espoo (FI)
Appl. No. 17/999,290
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Mar. 9, 2021, PCT No. PCT/FI2021/050170
§ 371(c)(1), (2) Date Nov. 18, 2022,
PCT Pub. No. WO2021/234212, PCT Pub. Date Nov. 25, 2021.
Claims priority of provisional application 63/029,109, filed on May 22, 2020.
Prior Publication US 2023/0188308 A1, Jun. 15, 2023
Int. Cl. H04B 7/0408 (2017.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01)
CPC H04L 5/0096 (2013.01) [H04B 7/0408 (2013.01); H04B 7/06952 (2023.05)] 12 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining, by a terminal node, information indicating that one or more activated transmission configuration indicator states are associated with a set of beam groups; and
operating based on the obtained information; and
when operating based on the obtained information:
detect a control signal indicating one of the one or more activated transmission configuration indicator states to use;
determine whether the indicated one of the one or more activated transmission configuration indicator states is associated with a same beam group as that associated with a transmission configuration indicator state in use;
based on the indicated one of the one or more activated transmission configuration indicator states being determined to be associated with the same beam group as that associated with the transmission configuration indicator state in use, determine to use at least one of the following for a communication: a time offset associated with the same beam group; or
one or more simultaneous spatial domain receive filters that are the same as that used for the transmission configuration indicator state in use;
operate based on the determination that the indicated one of the one or more activated transmission configuration indicator states is associated with the same beam group as that associated with the transmission configuration indicator state in use; and
based on a group report for a transmission configuration indicator state being outdated, determine to use a different time offset for the communication.