UE Beam Reporting for Cross-Link Interference Differentiation
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Solution Overview
Problem
Current interference measurement resources in wireless communication systems cannot differentiate between inter-cell and inter-UE cross-link interference, leading to inaccurate CSI reports and degraded communications with increased latency and wasted signaling resources.
Innovation Solution
A UE reports beam information jointly with cross-link interference measurements, allowing the network entity to adjust beams or scheduling based on the nature of the interference, thereby reducing overhead and conserving signaling resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current interference measurement resources are used, then interference measurement can be performed, but the system cannot differentiate between inter-cell and inter-UE cross-link interference leading to inaccurate CSI reports
Solution Approach 1:
The patent segments the interference measurement process by introducing separate measurement resources for different interference types. Specifically, it defines separate CSI-RS resources for inter-cell interference measurement and inter-UE CLI measurement, allowing the system to distinguish between different interference sources and report them separately, thereby resolving the information loss problem while maintaining measurement capability
Solution Approach 2:
The patent introduces an intermediary mechanism through the beam report structure that carries both channel measurement and CLI measurement. The beam report acts as a mediator that consolidates multiple measurement types while preserving the ability to differentiate interference sources, enabling accurate CSI reporting without losing interference source information
2Measurement precision
If separate interference measurement resources are introduced to differentiate interference sources, then measurement precision improves, but device complexity and signaling overhead increase
Solution Approach 1:
The patent merges multiple measurement functions into a unified beam report structure. Instead of requiring completely separate measurement resources and processing paths, it combines channel measurement and CLI measurement within the same beam report framework, reducing the overall system complexity while maintaining the ability to differentiate interference sources
Solution Approach 2:
The beam report structure is designed with multi-functionality, serving both as a channel quality indicator and as a carrier for interference measurement information. This universal structure reduces the need for separate dedicated resources and simplifies the overall measurement system while preserving interference source differentiation capability
3Productivity
If accurate interference source identification is implemented, then communication efficiency improves, but signaling resources are consumed for additional measurements and reports
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports beam information including interference measurements back to the network entity. This feedback loop enables the network to identify interference sources and adjust scheduling decisions, improving communication efficiency while the structured report format controls signaling resource consumption
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a reference signal. The UE may transmit a beam report that is based at least in part on a channel measurement of the reference signal and one or more interference measurements of the reference signal that include a cross-link interference measurement. Numerous other aspects are described.