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US 11,601,181 B2Granted
Beam failure recovery
AssigneeLenovo (Beijing) Limited
InventorsChenxi Zhu, Lianhai Wu, Zhennian Sun, Hongmei Liu
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Abstract
Methods and apparatuses for recovering from beam failure are disclosed. A method of recovering from beam failure, comprising: sending a beam failure recovery request message including information regarding beam failure recovery and information regarding a new candidate beam via a working beam of a first cell; monitoring a response via the new candidate beam of a second cell; and receiving the response via the new candidate beam from the second cell.
Claims20
A method of recovering from beam failure, comprising:
- comparing an error rate of a last serving beam of a first cell to a threshold value;
- determining occurrence of a beam failure in response to the error rate of the last serving beam of the first cell being below the threshold value for a predetermined number of times;
- in response to determining occurrence of the beam failure, sending a beam failure recovery request message including information regarding beam failure recovery and information regarding a new candidate beam via a working beam of the first cell;
- monitoring a response to the beam failure recovery request message via the new candidate beam of a second cell;
- and
- receiving the response to the beam failure recovery request message via the new candidate beam from the second cell.
3 more elements
A method comprising:
- receiving a beam failure recovery request message including information regarding beam failure recovery and information regarding a new candidate beam in response to a determination of an occurrence of a beam failure, wherein the occurrence of the beam failure is determined in response to an error rate of a last serving beam of a first cell being below a threshold value for a predetermined number of times;
- and
- sending a response to the beam failure recover request message via the new candidate beam.
A method of recovering from beam failure, comprising:
- receiving a beam management message including a carrier index and a reference signal in response to a determination of an occurrence of a beam failure, wherein the occurrence of the beam failure is determined in response to an error rate of a last serving beam of a first cell being below a threshold value for a predetermined number of times;
- sending a random access procedure signal via random access procedure resource to the first cell, wherein the first cell is a primary cell;
- configuring a working beam of the first cell;
- and
- configuring the working beam of the first cell as a working beam of a second cell, wherein the second cell is a secondary cell, and the working beam is configured for the second cell without using random access channel resources.
2 more elements
Dependencies are inferred from the claim text.