Repeater Node Self-Interference Measurement for Full Duplex
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Solution Overview
Problem
Wireless communication systems face challenges in accurately measuring self-interference in repeater nodes, which can lead to reduced signal quality and increased network resource consumption due to interference and clutter reflections.
Innovation Solution
A method where a control node transmits full duplex configuration information to a repeater node, enabling the repeater node to transmit and receive signals for self-interference measurement, and subsequently, the control node determines the self-interference based on the received signals or parameters, allowing for reconfiguration to reduce interference and improve signal-to-interference-plus-noise ratio (SINR).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex operation is enabled in repeater nodes, then network capacity and spectral efficiency are improved, but self-interference and clutter reflections increase reducing signal quality
Solution Approach 1:
The system performs self-interference measurement and reporting before full duplex operation begins, allowing the network to pre-characterize the interference environment and configure appropriate interference mitigation strategies in advance
Solution Approach 2:
The repeater node continuously measures self-interference levels and feeds back this information to the network controller, enabling dynamic adjustment of full duplex configuration parameters to maintain optimal performance while managing interference
2Reliability
If self-interference measurement is performed, then signal quality is improved, but network resource consumption increases
Solution Approach 1:
The system performs self-interference measurement only on specific resource blocks and time slots as needed, rather than continuously across all resources, reducing measurement overhead while maintaining adequate signal quality monitoring
Solution Approach 2:
The repeater node transmits copies of reference signals for self-interference measurement purposes, allowing the network to characterize interference without requiring additional dedicated measurement resources
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a control node may transmit, to a repeater node, full duplex configuration information. The control node may determine, based at least in part on a signal transmitted by the repeater node, a self-interference of the repeater node associated with the signal. Numerous other aspects are provided.