US 12,250,048 B2
Terminal and communication method that determine a spatial reception parameter
Hideaki Takahashi, Tokyo (JP); Kazuki Takeda, Tokyo (JP); and Yuuki Matsumura, Tokyo (JP)
Assigned to NTT DOCOMO, INC., Tokyo (JP)
Appl. No. 17/432,451
Filed by NTT DOCOMO, INC., Tokyo (JP)
PCT Filed Jan. 22, 2020, PCT No. PCT/JP2020/002185
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/174947, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-032848 (JP), filed on Feb. 26, 2019.
Prior Publication US 2022/0149919 A1, May 12, 2022
Int. Cl. H04W 72/04 (2023.01); H04B 7/06 (2006.01); H04W 24/08 (2009.01); H04W 56/00 (2009.01); H04W 74/0833 (2024.01); H04W 76/19 (2018.01)
CPC H04B 7/0695 (2013.01) [H04W 24/08 (2013.01); H04W 56/001 (2013.01); H04W 74/0841 (2013.01); H04W 76/19 (2018.02)] 5 Claims
OG exemplary drawing
 
1. A terminal comprising:
a processor that determines a spatial reception parameter of a downlink control channel based on Quasi-co-location (QCL) information on a synchronization signal or a reference signal; and
a receiver that receives the downlink control channel based on the determined spatial reception parameter,
wherein, when a beamFailureRecoveryTimer expires, and when Beam Failure Recovery (BFR) is performed by applying a contention-based random access procedure, the processor assumes a parameter indicating a DeModulation Reference Signal (DM-RS) antenna port quasi-collocation, the parameter being associated with a Synchronization Signal Block (SSB), the SSB being detected so as to select a random access preamble in the contention-based random access procedure, as a QCL parameter for monitoring the downlink control channel in a search space, and
wherein until the terminal receives a reconfiguration that includes configuration of Type 3 Physical Downlink Control Channel (PDCCH) common search space (CSS) set, Type 1 PDCCH CSS set is used for monitoring the downlink control channel.