Beam switch and beam failure recovery
AssigneeQUALCOMM Incorporated
InventorsSumeeth Nagaraja, Tao Luo, Yong Li
Life of this patent
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Abstract
Methods, systems, and devices for wireless communications are described. One method may include receiving a beam switch message prior to initiating a physical random access channel (PRACH) procedure, monitoring for a response from a base station using a candidate beam during a random access response window, identifying a beam switch event occurring within the random access response window based on beam switch timing information indicated in the beam switch message, and performing a beam switch procedure based on an absence of a response from the base station during a portion of the random access response window and prior to the beam switch event.
Claims30
A method for wireless communication at a user equipment (UE), comprising:
- receiving a beam switch message prior to initiating a physical random access channel (PRACH) procedure;
- monitoring for a response from a base station using a candidate beam during a random access response window;
- identifying a beam switch event occurring within the random access response window based at least in part on beam switch timing information indicated in the beam switch message;
- and
- performing a beam switch procedure based at least in part on an absence of a response from the base station during a portion of the random access response window and prior to the beam switch event.
An apparatus for wireless communication at a user equipment (UE), comprising:
- a processor;
- memory coupled with the processor;
- and
- instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
- receive a beam switch message prior to initiating a physical random access channel (PRACH) procedure;
- monitor for a response from a base station using a candidate beam during a random access response window;
- identify a beam switch event occurring within the random access response window based at least in part on beam switch timing information indicated in the beam switch message;
- and
- perform a beam switch procedure based at least in part on an absence of a response from the base station during a portion of the random access response window and prior to the beam switch event.
An apparatus for wireless communication at a user equipment (UE), comprising:
- means for receiving a beam switch message prior to initiating a physical random access channel (PRACH) procedure;
- means for monitoring for a response from a base station using a candidate beam during a random access response window;
- means for identifying a beam switch event occurring within the random access response window based at least in part on beam switch timing information indicated in the beam switch message;
- and
- means for performing a beam switch procedure based at least in part on an absence of a response from the base station during a portion of the random access response window and prior to the beam switch event.
A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to:
- receive a beam switch message prior to initiating a physical random access channel (PRACH) procedure;
- monitor for a response from a base station using a candidate beam during a random access response window;
- identify a beam switch event occurring within the random access response window based at least in part on beam switch timing information indicated in the beam switch message;
- and
- perform a beam switch procedure based at least in part on an absence of a response from the base station during a portion of the random access response window and prior to the beam switch event.
Dependencies are inferred from the claim text.