mTRP CLI Measurement Configuration for Dynamic TDD Interference
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively mitigating cross-link interference (CLI) and self-interference (SI) in dynamic TDD and full-duplexing scenarios, which can degrade downlink reception performance.
Innovation Solution
A user equipment (UE) and network node configuration that includes setting up measurement resource sets for UE to measure CLI levels associated with downlink receive beams from multiple transmission reception points (TRPs), allowing for the reporting of CLI levels to the network node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic TDD configuration is used to improve spectral efficiency and reduce latency, then resource utilization is enhanced, but cross-link interference between uplink and downlink transmissions increases
Solution Approach 1:
The patent applies preliminary action by configuring the UE with measurement resource sets and CLI measurement configurations before actual downlink transmissions occur. The network node pre-configures multiple measurement resource sets corresponding to different TRPs, enabling the UE to proactively measure and report CLI levels before interference-degrading transmissions take place, allowing the network to adjust scheduling decisions in advance
Solution Approach 2:
The patent implements feedback mechanisms where the UE continuously measures CLI levels on configured measurement resources and reports these measurements back to the network node. This feedback loop enables the network to dynamically adjust TDD configurations, power levels, or scheduling decisions based on real-time interference conditions, resolving the contradiction between maintaining high spectral efficiency and controlling CLI
2Measurement precision
If multiple measurement resource sets are configured for different TRPs, then CLI measurement capability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the measurement configuration into multiple distinct measurement resource sets, where each set corresponds to a specific TRP. This segmentation allows the UE to measure CLI from different TRPs independently using dedicated resources, improving measurement precision while organizing the complexity into manageable, TRP-specific configurations rather than a single monolithic measurement system
Solution Approach 2:
The patent implements universality by designing a standardized measurement resource set structure that can be reused across multiple TRPs. Each measurement resource set follows the same format and measurement procedures, allowing the UE to apply the same measurement logic universally to different TRPs. This multi-functional approach improves measurement capability while reducing complexity through configuration reuse and standardized procedures
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may configure multiple transmission reception point (mTRP) operation in a manner that enables a user equipment (UE) to measure inter-UE cross-link interference (CLI) for each downlink receive beam that corresponds to a respective TRP that communicates with the UE in a duplexing mode with dynamic interference conditions (for example, CLI and/or self-interference). For example, to support mTRP operation, the network node may transmit, to the UE, a CLI configuration that indicates a respective CLI measurement resource set for each TRP that is configured to communicate with the UE, where each CLI measurement resource set may include an interference measurement resource (IMR) set associated with a respective TRP, thereby configuring the UE to measure and report a CLI level for each channel measurement resource (CMR) associated with a TRP that communicates with the UE.