Apparatus and method for beam failure recovery
AssigneeFuturewei Technologies, Inc.
InventorsYoung Hoon Kwon, Bin Liu, Pengfei Xia
Life of this patent
Estimating the term…
Abstract
The disclosure relates to technology for assigning resources to user equipment for a beam failure recovery by a base station. The base station identifies a beam failure random access channel (BRACH) resource holding beam correspondence with a synchronization signal (SS) block resource covering the user equipment, and assigns the user equipment one or more BRACH preambles for each BRACH resource assigned to the user equipment, excluding the BRACH resource holding beam correspondence with the SS block resource covering the user equipment.
Claims18
A non-transitory computer-readable medium storing computer instructions for assigning resources to a user equipment for a beam failure recovery by a base station that, when executed by one or more processors of the base station, cause the base station to perform the steps of:
- configuring a plurality of new beam identification reference signals;
- identifying one or more of the new beam identification reference signals corresponding to one or more current beams of the user equipment;
- assigning to the user equipment one or more beam failure random access channel (BRACH) resource, including a BRACH preamble, for each of the plurality of the new beam identification reference signals excluding the new beam identification reference signals corresponding to all the current beams of the user equipment;
- and
- transmitting the assignment of the BRACH resources to the user equipment.
A method for a beam failure recovery, comprising:
- identifying one or more current beams serving a user equipment;
- monitoring a signal quality of the one or more current beams to identify when the signal quality falls below a first threshold value;
- identifying one or more new beam identification reference signals corresponding to the one or more current beams of the user equipment;
- identifying a new beam having a signal quality above a second threshold value from the one or more new beam identification reference signals, excluding the new beam identification reference signals corresponding to one or more of the current beams of the user equipment;
- and transmitting a beam failure recovery request (BFRR) on a beam failure random access channel (BRACH) resource corresponding to the identified new beam.
A method for assigning resources to a user equipment for a beam failure recovery by a base station, comprising:
- configuring a plurality of new beam identification reference signals;
- identifying one or more of the new beam identification reference signals corresponding to one or more current beams of the user equipment;
- assigning to the user equipment one or more beam failure random access channel (BRACH) resources, including a BRACH preamble, for each of the plurality of the one or more the new beam identification reference signals excluding the new beam identification reference signals corresponding to all the current beams of the user equipment;
- and
- transmitting the assignment of the BRACH resource to the user equipment.
Dependencies are inferred from the claim text.