CLI Measurement Reporting for Subband Full Duplex Terminals
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Solution Overview
Problem
In subband full duplex (SBFD) systems, cross-link interference (CLI) between terminal devices is not measured quickly enough by network devices, affecting communication quality.
Innovation Solution
A terminal device reports cross-link interference measurements to a network device through flexible reporting methods like aperiodic, semi-persistent, or event-triggered reporting on physical uplink control channels, using modified control information fields to indicate CLI measurements, and receives configuration information for measurement signals and reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If terminal devices measure SRS and feedback results using conventional methods, then measurement can be performed, but the network device cannot obtain CLI variation quickly enough
Solution Approach 1:
The patent implements dynamic reporting mechanisms where the terminal device can switch between periodic reporting (for stable conditions) and aperiodic/event-triggered reporting (when CLI changes rapidly). The network device can dynamically configure reporting triggers based on CLI variation thresholds, enabling faster response to interference changes while maintaining efficiency during stable periods.
Solution Approach 2:
The patent changes the reporting parameters from fixed periodic intervals to flexible event-triggered or aperiodic reporting. By modifying the reporting trigger conditions and intervals dynamically based on CLI variation magnitude, the system achieves faster detection of interference changes without continuous high-frequency reporting, thus reducing time delay while maintaining measurement accuracy.
2Adaptability or versatility
If flexible reporting methods (aperiodic, semi-persistent, event-triggered) are used, then reporting speed and flexibility improve, but system complexity increases
Solution Approach 1:
The patent designs a universal reporting framework that can handle multiple reporting types (periodic, semi-persistent, aperiodic, event-triggered) through a unified interface and configuration mechanism. The same measurement and reporting infrastructure supports different reporting strategies, reducing the need for separate dedicated systems for each reporting mode and thereby limiting the increase in complexity.
Solution Approach 2:
The network device pre-configures multiple reporting configurations with different parameters and triggers before actual CLI measurement begins. When CLI measurement is needed, the terminal device simply activates the appropriate pre-configured reporting mode based on current conditions, avoiding the need to dynamically create and manage complex reporting structures in real-time, thus reducing operational complexity.
Data Source
AI summary
This application provides a measurement method and a communication apparatus. The method includes: A terminal device receives one or more measurement signals, where the one or more measurement signals include a measurement signal 1. The terminal device sends one or more measurement reports to a network device on a physical uplink control channel and/or a physical uplink shared channel, where the one or more measurement reports include a measurement report 1. The measurement report 1 includes information obtained by performing cross-link interference measurement based on the measurement signal 1. A reporting type of the measurement report 1 includes aperiodic reporting or semi-persistent reporting.