US 12,294,438 B2
Method and apparatus for SCell beam failure recovery configuration
Chia-Hao Yu, Yilan (TW); and Chia-Hung Wei, Hsinchu (TW)
Assigned to Hannibal IP LLC, Frisco, TX (US)
Filed by Hannibal IP LLC, Frisco, TX (US)
Filed on Jul. 17, 2023, as Appl. No. 18/222,789.
Application 18/222,789 is a continuation of application No. 17/942,659, filed on Sep. 12, 2022, granted, now 11,876,592.
Application 17/942,659 is a continuation of application No. 16/791,778, filed on Feb. 14, 2020, granted, now 11,483,054, issued on Oct. 25, 2022.
Claims priority of provisional application 62/806,081, filed on Feb. 15, 2019.
Prior Publication US 2024/0120988 A1, Apr. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/30 (2009.01); H04B 7/08 (2006.01); H04W 16/28 (2009.01); H04W 72/044 (2023.01); H04W 72/23 (2023.01); H04W 76/19 (2018.01); H04W 80/02 (2009.01)
CPC H04B 7/088 (2013.01) [H04W 16/28 (2013.01); H04W 72/046 (2013.01); H04W 72/23 (2023.01); H04W 80/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A base station (BS) comprising:
a transceiver;
one or more non-transitory computer-readable media containing computer-executable instructions embodied therein; and
at least one processor coupled to the transceiver and the one or more non-transitory computer-readable media, the at least one processor configured to execute the computer-executable instructions to:
transmit, via the transceiver, a first secondary cell (SCell) beam failure recovery (BFR) configuration corresponding to a first SCell, the first SCell BFR configuration including at least one of a resource list for beam failure detection (BFD) indicating at least one BFD reference signal for BFD and a resource list for New Beam Identification (NBI) comprising at least one candidate NBI reference signal, each NBI reference signal that corresponds to a different candidate beam being associated with a specific preamble configuration;
in response to a scheduling request (SR) being configured;
receive, via the transceiver from a user equipment (UE), a scheduling request (SR) message on a Physical Uplink Control Channel (PUCCH) requesting an UpLink (UL) resource for the UE to transmit a BFR Medium Access Control (MAC) Control Element (CE), the SR configured for BFR on the first SCell; and
transmit, via the transceiver to the UE, a DCI comprising UL grant on Physical Downlink Control Channel (PDCCH) in response to receiving the SR message, the DCI granting a Physical Uplink Shared Channel (PUSCH) for the BFR MAC CE transmission; and
in response to the SR not being configured:
receive from the UE in the SCell a Beam Failure Recovery (BFR) request on a Physical Random Access Channel (PRACH) according to a two-step contention-free random access procedure; and
transmit to the UE in the SCell a random access response according to the two-step contention-free random access procedure.