Method for recovering beam in wireless communication system and device therefor
AssigneeLG Electronics Inc.
InventorsJiwon Kang, Minki Ahn, Kilbom Lee
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Abstract
Provided is a beam recovery method in a wireless communication system. A beam recovery method performed by a user terminal (UE) may include receiving a beam reference signal (BRS) used for beam management from an enhanced Node B (eNB), when a beam failure event is detected, transmitting a control signal for a beam failure recovery request to the eNB; and, when beam reporting is triggered, reporting a beam measurement result to the eNB in a specific resource.
Claims11
A method performed by a user equipment (UE) for beam failure recovery in a wireless communication system, the method comprising:
- receiving, from a base station, information for a beam reference signal (BRS) set including at least one BRS used for beam management;
- based on a beam failure event being detected, transmitting a control signal for a beam failure recovery request to the base station;
- and
- based on beam reporting being triggered, reporting a beam measurement result in a specific resource to the base station,
- wherein the control signal comprises indication information directly indicating whether there is a replacement beam in the BRS set, and wherein based on the indication information indicating that there is a replacement beam, information indicating the replacement beam is transmitted from the UE to the base station,
- wherein the replacement beam is related to a reference signal having a quality greater than a specific quality threshold in the BRS set, and
- wherein aperiodic reference signal transmission and aperiodic beam reporting are triggered together.
A user equipment (UE) for performing beam failure recovery in a wireless communication system, the UE comprising:
- a radio frequency (RF) module configured to transmit and receive radio signals;
- a processor functionally connected to the RF module,
- wherein the processor is configured to:
- receive, from a base station, information for a beam reference signal (BRS) set including at least one BRS used for beam management;
- based on a beam failure event being detected, transmit a control signal for a beam failure recovery request to the base station;
- and
- based on beam reporting being triggered, report a beam measurement result in a specific resource to the base station,
- wherein the control signal comprises indication information directly indicating whether there is a replacement beam in the BRS set, and wherein based on the indication information indicating that there is a replacement beam, information indicating the replacement beam is transmitted from the UE to the base station,
- wherein the replacement beam is related to a reference signal having a quality greater than a specific quality threshold in the BRS set, and
- wherein aperiodic reference signal transmission and aperiodic beam reporting are triggered together.
Dependencies are inferred from the claim text.