Access Node Reference Signal Configuration for Repeater Angle-of-Arrival
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Solution Overview
Problem
Existing re-configurable repeater devices (RRDs) lack effective methods for accurately configuring spatial filters to facilitate angle-of-arrival measurements, which is crucial for reliable signal forwarding and beam management in wireless communication systems.
Innovation Solution
Implementing a method where an access node provides a configuration for reference signal transmissions on an auxiliary carrier to a re-configurable repeater device (RRD) to facilitate angle-of-arrival measurements, utilizing multiple spatial filters associated with specific input and output directions, enabling the RRD to re-configure based on these measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reference signals are transmitted on the data carrier, then the existing communication channel is utilized, but angle-of-arrival measurements at the RRD cannot be facilitated
Solution Approach 1:
The patent segments the communication system by introducing a separate auxiliary carrier specifically for reference signal transmissions. This allows angle-of-arrival measurements to be performed independently without interfering with data carrier operations, resolving the contradiction between maintaining existing channel simplicity and enabling measurement capabilities.
Solution Approach 2:
The auxiliary carrier acts as an intermediary channel that facilitates angle-of-arrival measurements without directly modifying the data carrier. This mediator approach enables measurement functionality while preserving the original communication channel structure, addressing both reliability and complexity concerns.
2Adaptability or versatility
If multiple spatial filters are configured at the RRD, then beam management capability is improved, but the complexity of spatial filter configuration increases
Solution Approach 1:
The patent implements feedback mechanisms where the access node receives angle-of-arrival measurement results from the RRD and uses this information to optimize spatial filter configurations. This feedback loop enables adaptive beam management that improves versatility while managing complexity through data-driven optimization.
Solution Approach 2:
The spatial filter configuration is made dynamic and reconfigurable based on measured angle-of-arrival data. Rather than static configuration, the system adapts spatial filters in real-time to optimize beam management, resolving the contradiction between adaptability and configuration complexity.
3Measurement precision
If angle-of-arrival measurements are performed, then spatial direction accuracy is improved, but the need for separate reference signal transmissions increases system complexity
Solution Approach 1:
The auxiliary carrier is designed with multi-functionality, serving both as a reference signal transmission channel for angle-of-arrival measurements and as a potential data transmission channel. This universal approach reduces overall system complexity by consolidating functions rather than creating separate dedicated channels.
Data Source
AI summary
An access node—e.g., a base station—provide a wireless communication device with a configuration of a reference-signal transmission in response to a need to facilitate angle-of-arrival measurements a reconfigurable repeater device.