Cross Link Interference Measurement for Full Duplex Scheduling
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Solution Overview
Problem
The present disclosure aims to minimize interference between inter-cell user equipments (UEs) due to sub-band full duplex (SBFD) and/or single frequency full duplex (SFFD) operation at a base station (BS) by scheduling/configuring SBFD slots and/or SFFD slots based on cross link interference (CLI) measurement information reported through L1/L2.
Innovation Solution
A method and apparatus for performing measurement related to cross link interference (CLI) by a user equipment (UE) in a wireless communication system, involving receiving resource configuration information, triggering CLI measurement, and reporting measurement information to a base station (BS), with the CLI measurement triggered based on downlink control information (DCI) that includes indication information for the CLI measurement resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sub-band full duplex (SBFD) and/or single frequency full duplex (SFFD) operation is implemented at base station, then communication capacity and spectral efficiency are improved, but cross link interference between inter-cell user equipments increases
Solution Approach 1:
The patent applies preliminary action by having user equipments perform cross link interference measurements and report results to the base station before full duplex scheduling decisions are made. The base station uses these pre-reported measurement results to determine whether to schedule SBFD/SFFD slots, thereby preventing interference issues before they occur rather than reacting to them afterward.
Solution Approach 2:
The patent implements feedback mechanisms where user equipments measure cross link interference on configured resources and report the measurement results back to the base station. The base station then uses this feedback information to dynamically adjust scheduling decisions, enabling closed-loop control that balances communication capacity improvement with interference mitigation.
2Measurement precision
If CLI measurement resources are configured for all UEs, then interference measurement accuracy is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent applies local quality by configuring CLI measurement resources selectively rather than uniformly for all user equipments. The base station determines which specific UEs should perform measurements based on local conditions such as their proximity to potential interference sources or their scheduled resource patterns, thereby achieving accurate interference measurement where needed while reducing unnecessary complexity elsewhere in the system.
Data Source
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AI summary
A method by which a terminal performs measurements related to positioning in a wireless communication system and a device therefor, according to various embodiments, are disclosed. Disclosed are a method and a device therefor, the method comprising: a step of receiving resource configuration information including CLI measurement resources related to a CLI measurement; a step in which the CLI measurement for the CLI measurement resources is triggered; and a step of reporting measurement information about the CLI measurement to a base station, wherein the CLI measurement is triggered on the basis of indication information about the CLI measurement resources being included in downlink control information (DCI) which triggers reporting of channel state information (CSI).