NCR Beam Indication for Adaptive Backhaul Link Alignment
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Solution Overview
Problem
Current network-controlled repeaters (NCRs) lack a method for adjusting uplink forwarding and downlink reception beams, leading to degraded link quality and reduced communication system performance due to inflexible beam management.
Innovation Solution
Implement a method for network-controlled repeaters (NCRs) to receive beam-related information from a base station, allowing for dynamic adjustment of downlink reception and uplink forwarding beams through signaling such as RRC, MAC-CE, or DCI, using spatial filters associated with TCI states or reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network-controlled repeaters use fixed beam configurations, then device complexity is reduced, but link quality and coverage are degraded
Solution Approach 1:
The base station receives feedback information from the repeater about channel conditions and determines optimal beam configurations based on this feedback. This feedback mechanism enables adaptive beam management that maintains high link quality while keeping the repeater's device complexity low, as the base station performs the complex beam selection based on simple feedback from the repeater.
Solution Approach 2:
The repeater autonomously determines uplink forwarding beam configurations based on downlink reception beam information without requiring complex external control. This self-service approach allows the repeater to adapt to changing conditions while maintaining simplified device architecture, resolving the contradiction between reliability and complexity.
2Reliability
If network-controlled repeaters use dynamic beam adjustment, then link quality and coverage are improved, but device complexity increases
Solution Approach 1:
The system implements dynamic beam adjustment where the base station sends downlink reception beam information to the repeater, which then determines uplink forwarding beam configurations. This dynamic adaptation to changing channel conditions improves link quality and coverage while maintaining manageable device complexity through standardized procedures.
Solution Approach 2:
The beam configurations are adjusted by changing parameters such as spatial filters and TCI states based on channel conditions. This parameter-based approach enables flexible and adaptive beam management that improves reliability while keeping device complexity controlled through systematic parameter adjustment rather than complex structural changes.
3Productivity
If network-controlled repeaters lack beam indication methods, then device complexity is reduced, but communication system performance deteriorates
Solution Approach 1:
The base station acts as an intermediary that provides beam indication information to the repeater through standardized signaling mechanisms. This intermediary approach enables the repeater to perform effective beam management for improved communication performance while relying on the base station to handle the complexity of beam selection and configuration.
Solution Approach 2:
The beam indication mechanism uses universal signaling methods (such as TCI states and spatial filters) that can be applied across different scenarios and configurations. This multi-functional approach improves communication system performance through standardized beam management procedures that work across various conditions without requiring scenario-specific complex solutions.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. In one embodiment. a method performed by a repeater is provided. The repeater is comprised a first unit and a second unit. The method comprising the step of obtaining beam-related information of the first unit, and performing at least one of downlink reception or uplink transmission through the second unit based on the beam-related information of the first unit. In another embodiment. a repeater is provided. the repeater comprises a transceiver and a controller. The controller is configured to obtain beam-related information of a first unit of the repeater, and perform at least one of downlink reception or uplink transmission through a second unit of the repeater based on the beam-related information.