Joint-Repeater-UE Beam Report for Overhead-Efficient Link Monitoring
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Solution Overview
Problem
Existing repeater nodes, such as RF repeaters, lack accurate beamforming capabilities, which limits their efficiency in millimeter wave frequencies, and there is a need for overhead-efficient methods to manage beam links in repeater-assisted networks to ensure robust connections and quick recovery from link failures.
Innovation Solution
Implement joint-repeater-UE beam reporting methods that configure and trigger specific beam reports to identify and quickly re-establish beam links between a wireless network node, repeater node, and UE, reducing overhead by combining service and access link evaluations into a single beam sweep procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional separate beam reporting for service link and access link is used, then link monitoring capability is maintained, but overhead and processing time increase
Solution Approach 1:
The patent combines service link beam reporting and access link beam reporting into a single joint beam report. The UE evaluates both links simultaneously using a unified reporting mechanism, where the beam report includes measurements from both the service link (gNB to UE) and access link (repeater to UE), reducing overhead and processing time while maintaining comprehensive link monitoring capability
2Measurement precision
If comprehensive beam sweeping for both service and access links is performed, then link evaluation accuracy is improved, but overhead increases
Solution Approach 1:
The patent implements selective beam reporting where the UE performs beam sweeping and evaluation but only reports beams that meet specific criteria (e.g., above a threshold quality level). The joint beam report includes only the best candidate beams from both service and access links, avoiding exhaustive reporting of all measured beams while maintaining sufficient evaluation accuracy for link failure detection
3Productivity
If rapid beam link recovery is implemented, then network availability is improved, but complexity of beam management increases
Solution Approach 1:
The patent pre-configures the UE with beam reporting configurations including reference signal resources for both service link (CSI-RS, SSB) and access link monitoring. The UE maintains a pool of candidate beam measurements and can rapidly trigger joint beam reports when link degradation is detected, enabling quick recovery without complex real-time beam management decisions during failure events
Data Source
AI summary
Systems and methods for joint-repeater-UE beam reporting in repeater-assisted networks are provided. In some embodiments, a method performed by a wireless network node for monitoring a connection to a UE through a repeater node includes: configuring the UE with one or more beam reports containing reference signals for evaluating one or more links between one or more of the group consisting of: the wireless network node, the repeater, and the UE; triggering one or more of the configured beam reports; transmitting one or more configured reference signals associated with the triggered beam reports; and receiving the one or more beam reports. In this way, overhead-efficient methods are provided for radio link monitoring in the presence of a repeater node to activate the beam and/or link recovery process.