Cross-Link Interference Reporting With Priority and Time-Aware Feedback
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Solution Overview
Problem
Existing wireless communications systems face challenges in efficiently minimizing cross-link interference (CLI) as techniques for generating and reporting CLI measurements are underdeveloped, leading to frequent failed transmissions and excessive retransmissions, which reduce throughput and increase overhead.
Innovation Solution
UEs report channel state feedback (CSF) and CLI measurements to network entities, including indicators and values, and may also report SINR, with the network entity triggering further measurements based on SINR, and the content of the report varying based on allocated time for generation and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs perform CLI measurements and generate reports, then CLI minimization capability is improved, but processing time and report generation duration increase
Solution Approach 1:
The UE performs CLI measurements on configured resources in advance and stores measurement results before report transmission is required. This preliminary measurement action allows the UE to have measurement data ready, reducing the critical processing time when reports need to be generated and transmitted.
Solution Approach 2:
The report configuration is made dynamic and configurable, allowing the network to adjust report parameters, resources, and timing based on current system conditions. This flexibility enables optimization of the balance between measurement accuracy and reporting timing requirements.
2Measurement precision
If detailed CLI measurement reports are transmitted, then interference minimization accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent implements differentiated reporting where different levels of measurement detail are provided for different purposes. Critical CLI measurements are reported with high precision, while less critical information uses compressed or aggregated formats, optimizing the balance between accuracy and overhead.
Solution Approach 2:
The system reports only the necessary portion of CLI measurement data required for effective interference minimization. Rather than transmitting all possible measurement parameters, the patent selectively reports the most impactful metrics, reducing overhead while maintaining minimization effectiveness.
3Measurement precision
If multiple CLI measurement resources are allocated, then measurement accuracy is improved, but resource allocation complexity increases
Solution Approach 1:
CLI measurement resources are segmented into multiple configured resources with different characteristics (time, frequency, spatial). This segmentation allows the UE to perform measurements across diverse conditions, improving accuracy through multiple measurement opportunities while the network manages resource allocation in organized segments.
Solution Approach 2:
The configured CLI measurement resources serve multiple functions: they enable both accurate interference measurement and provide the network with information for scheduling decisions. The same resource configuration framework supports both measurement accuracy and resource management objectives.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In one aspect, a UE may report channel state feedback (CSF) to a network entity based on channel state information (CSI) measurements and CLI measurements. In another aspect, a UE may explicitly report CLI measurements to a network entity. In yet another aspect, a UE may report a signal-to-interference-plus-noise ratio (SINR) to a network entity based on CLI measurements, and the network entity may trigger the UE to perform further CLI measurements on signals received from other UEs based on the SINR. In yet another aspect, a UE may generate a report using CLI measurements based on whether the UE is allocated enough time to generate and transmit the report. In yet another aspect, a UE may identify a suitable priority for reporting CLI to a network entity.