US 12,192,144 B2
Beam failure recovery for user equipment communicating with multiple transmission and reception points
Yushu Zhang, Beijing (CN); Chunxuan Ye, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haitong Sun, Irvine, CA (US); Huaning Niu, San Jose, CA (US); Oghenekome Oteri, San Diego, CA (US); Seyed Ali Akbar Fakoorian, San Diego, CA (US); Sigen Ye, Whitehouse Station, NJ (US); and Wei Zeng, San Diego, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Oct. 16, 2023, as Appl. No. 18/487,498.
Application 18/487,498 is a continuation of application No. 17/438,912, granted, now 11,843,559, previously published as PCT/CN2021/071383, filed on Jan. 13, 2021.
Prior Publication US 2024/0072970 A1, Feb. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/0051 (2013.01) [H04L 5/0032 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a processor configured to, when executing instructions stored in a memory, perform operations comprising:
receiving a configuration including a first beam failure detection reference signal (BFD RS) set corresponding to a first transmission reception point (TRP) of a plurality of TRPs, a second BFD RS set corresponding to a second TRP of the plurality of TRPs, and at least one dedicated scheduling request associated with beam failure indication for one or more of the first and second BFD RS sets;
transmitting the at least one dedicated scheduling request requesting resources for indicating a first one or more beam failures associated with the first BFD RS set and a second one or more beam failures associated with the second BFD RS set;
receiving a response to the at least one dedicated scheduling request allocating resources; and
transmitting, using the allocated resources, a beam failure indication in a medium access control-control element (MAC-CE) indicating the first one or more beam failures associated with the first BFD RS set and the second one or more beam failures associated with the second BFD RS set, wherein the beam failure indication includes indications of:
one or more serving cells with detected beam failures,
whether a first new beam is identified from a first candidate beam detection reference signal (CBD RS) set corresponding to the first TRP,
the first new beam,
whether a second new beam is identified from a second CBD RS set corresponding to the second TRP, and
the second new beam.