US 12,225,565 B2
Methods and apparatus of spatial relation switching in new radio system
Zhixun Tang, Beijing (CN); Tsang-Wei Yu, Hsin-Chu (TW); and Hsuan-Li Lin, Hsin-Chu (TW)
Assigned to MEDIATEK Singapore Ptd. Ltd, Singapore (SG)
Filed by MediaTek Singapore Pte. Ltd., Singapore (SG)
Filed on Feb. 9, 2021, as Appl. No. 17/171,075.
Application 17/171,075 is a continuation of application No. PCT/CN2020/074812, filed on Feb. 12, 2020.
Prior Publication US 2021/0250949 A1, Aug. 12, 2021
Int. Cl. H04W 72/53 (2023.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01); H04W 24/10 (2009.01); H04W 72/044 (2023.01); H04W 72/23 (2023.01); H04W 80/02 (2009.01)
CPC H04W 72/53 (2023.01) [H04B 7/0617 (2013.01); H04L 5/0048 (2013.01); H04L 25/0226 (2013.01); H04W 24/10 (2013.01); H04W 72/046 (2013.01); H04W 72/23 (2023.01); H04W 80/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a spatial relation configuration to switch to a target spatial relation for an uplink channel by a user equipment (UE) in a new radio (NR) network, wherein the spatial relation configuration indicates a spatial filter of the uplink channel is Quasi-Co-Located (QCLed) with one or more spatial filters of one or more downlink reference signals (DL RSs);
determining whether the target spatial relation is known or unknown based on a list of predefined conditions, wherein the target spatial relation is known when the spatial relation configuration was received within a predefined period of a previous transmission for beam measurement or reporting for the QCLed DL RS of the target spatial relation, the UE has sent at least one measurement report for the QCLed DL RS of the target spatial relation, the target spatial relation remain detectable during a spatial relation switching period, and a signal quality of the QCLed DL RS of the target spatial relation is better than a predefined threshold; and
switching to the target spatial relation directly when the target spatial relation is known, otherwise performing spatial filter training for a QCLed DL RS when the target spatial relation is unknown.