Apparatus and method for beam failure recovery
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorLi Guo
Life of this patent
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Abstract
An apparatus and a method for beam failure recovery are provided. The apparatus, such as a user equipment device, detects a first set of beam failure detection reference signals (RSs) associated with a first control resource set (CORESET) group identifier (ID), and measures the first set of beam failure detection RSs to detect a first beam failure event associated with the first CORESET group ID. The apparatus transmits a first beam failure recovery request message associated with the first CORESET group ID upon detecting the first beam failure event, and monitors a search space for a first beam failure recovery response responding to the first beam failure recovery request.
Claims18
A method for beam failure recovery executable by an apparatus, comprising:
- detecting a first set of beam failure detection reference signals (RSs) associated with a first control resource set (CORESET) group identifier (ID);
- measuring the first set of beam failure detection RSs to detect a first beam failure event associated with the first CORESET group ID;
- transmitting a first beam failure recovery request message associated with the first CORESET group ID when the first beam failure event is detected;
- and
- monitoring a search space for a first beam failure recovery response which responds to the first beam failure recovery request,
- wherein the method further comprises:
- selecting a first set of new beam identification RSs associated with the first CORESET group ID, of which link quality is measured as greater than a first threshold;
- and
- transmitting a random access channel (RACH) preamble associated with the first set of new beam identification RSs for a beam failure recovery process associated with the first CORESET group ID, wherein the RACH preamble comprises the first beam failure recovery request.
An apparatus for beam failure recovery, comprising:
- a transceiver configured for receiving reference signals (RSs);
- and
- a processor configured for detecting a first set of beam failure detection RSs associated with a first control resource set (CORESET) group identifier (ID);
- wherein the processor measures the first set of beam failure detection RSs to detect a first beam failure event associated with the first CORESET group ID;
- wherein the processor transmits a first beam failure recovery request message associated with the first CORESET group ID when the first beam failure event is detected;
- wherein the processor monitors a search space for a first beam failure recovery response which responds to the first beam failure recovery request, and
- wherein the processor further selects a RS from a first set of new beam identification RSs associated with the first CORESET group ID, of which link quality is measured as greater than a first threshold, and the processor transmits a random access channel (RACH) preamble associated with the RS selected from the first set of new beam identification RSs for a beam failure recovery process associated with the first CORESET group ID, wherein the RACH preamble comprises the first beam failure recovery request.
Dependencies are inferred from the claim text.