Cross-Link Interference Measurement Using Time Window Reporting
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively measuring and mitigating cross-link interference (CLI) between communication devices, leading to reduced throughput and decreased communication reliability.
Innovation Solution
A method and apparatus for UE-to-UE cross-link interference measurement and reporting using time window-based CLI-RSSI and CLI SRS-RSRP resources, with configurable slot offsets and measurement windows, enabling differentiation between aggressor UEs and reporting of CLI levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional CLI measurement methods are used, then measurement simplicity is maintained, but measurement precision and ability to differentiate between aggressor UEs deteriorates
Solution Approach 1:
The patent segments the CLI measurement process into distinct components: time window definition, resource configuration (CLI-RSSI and CLI-SRS-RSRP), and measurement execution. This segmentation allows precise measurement of CLI from different aggressor UEs while maintaining manageable complexity through structured configuration parameters.
Solution Approach 2:
The patent applies preliminary action by configuring measurement resources (time windows, slot offsets, frequency locations) before actual CLI measurement execution. The network entity pre-configures the UE with specific measurement parameters, enabling precise CLI differentiation without requiring complex real-time processing during measurement.
2Reliability
If continuous monitoring is implemented, then CLI detection reliability is improved, but time consumption and processing overhead increase
Solution Approach 1:
The patent implements periodic action through time window-based measurement scheduling. Instead of continuous monitoring, the system performs CLI measurements at specific periodic intervals defined by time windows and slot offsets. This maintains detection reliability by periodically sampling CLI levels while reducing time consumption by avoiding continuous processing.
Solution Approach 2:
The patent applies dynamics by making the measurement time window and slot offset configurable based on actual network conditions. The measurement parameters can be dynamically adjusted to optimize between reliability and time consumption, allowing the system to adapt to varying CLI conditions without fixed continuous monitoring overhead.
3Adaptability or versatility
If multiple measurement resources are configured, then ability to differentiate aggressor UEs is improved, but configuration complexity increases
Solution Approach 1:
The patent applies universality by configuring multiple measurement resources (CLI-RSSI and CLI-SRS-RSRP) that can be used for different purposes: identifying aggressor UEs, measuring CLI levels, and supporting mitigation decisions. These resources serve multiple functions within a unified measurement framework, enhancing differentiation capability without proportionally increasing configuration complexity.
Solution Approach 2:
The patent implements local quality by assigning specific measurement resources to specific time windows and frequency locations based on the characteristics of different aggressor UEs. Each measurement resource is tailored to specific local conditions (time, frequency, spatial characteristics), enabling precise differentiation of aggressor UEs while maintaining manageable configuration through localized parameter assignment.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Generally, the described techniques may enable a user equipment (UE) to receive a configuration message that may configure a set of cross-link interference resources, where each CLI resource may be configured with a respective slot offset. Based on receiving a control message, the UE may monitor and report the CLI resources in accordance with their respective slot offsets. Additionally, or alternatively, the UE may receive a control message that triggers a time window for the UE to monitor and measure any CLI resources that occurs within the time window. The UE may report a quantity of measurements (e.g., the N strongest or N weakest) in the time window, which may be associated with a quantity (e.g., the N strongest or N weakest) of aggressor UEs.