Inter-DU CLI Measurement Coordination for Wireless Base Stations
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively measuring and managing inter-distributed unit (inter-DU) crosslink interference (CLI) within wireless networks, which can impact communication quality and efficiency.
Innovation Solution
Implementing methods and apparatuses for identifying and measuring CLI resources, performing CLI measurements, and reporting CLI measurements and configurations between base station DUs and CUs to manage and mitigate CLI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inter-DU CLI measurement and reporting mechanisms are implemented, then communication quality and efficiency are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent introduces a centralized entity (such as a base station controller or network manager) that coordinates CLI measurements across multiple DUs. This intermediary collects measurement configurations, distributes them to relevant DUs, and consolidates measurement reports, thereby improving communication quality while managing the complexity through centralized control rather than distributed peer-to-peer interactions.
Solution Approach 2:
The patent employs universal measurement resources and signaling structures that can be applied across different DU pairs and scenarios. By defining standardized CLI measurement objects, resource configurations, and reporting formats that work universally, the system improves communication quality without requiring custom complex mechanisms for each specific DU pair.
2Measurement precision
If comprehensive CLI measurements are performed across all DU pairs, then interference management accuracy is improved, but signaling overhead and processing time increase
Solution Approach 1:
The patent implements CLI measurements selectively based on local conditions at each DU pair. Instead of universal measurements across all DUs, the system identifies specific DU pairs experiencing interference issues and performs measurements only on those local instances. This approach maintains measurement precision for affected pairs while reducing overall signaling overhead and processing time.
Solution Approach 2:
The patent performs CLI measurements on a partial basis rather than comprehensively across all DU pairs. By implementing measurements only when interference is detected or suspected, and by allowing optional reporting based on threshold conditions, the system achieves sufficient measurement accuracy for problem areas without the time and overhead costs of universal measurements.
3Speed
If frequent CLI measurement reports are transmitted, then interference mitigation responsiveness is improved, but network overhead and energy consumption increase
Solution Approach 1:
The patent implements periodic CLI measurement reporting where DUs transmit reports at predetermined intervals or triggered by specific events rather than continuously. This periodic approach maintains responsiveness to interference changes while significantly reducing signaling overhead and energy consumption compared to continuous reporting mechanisms.
Solution Approach 2:
The patent employs feedback-based reporting where the frequency and detail of CLI measurement reports are dynamically adjusted based on current interference conditions. When interference levels are high or changing rapidly, reporting frequency increases to maintain fast mitigation response. When conditions are stable, reporting frequency decreases to reduce overhead and energy consumption, creating an adaptive balance between responsiveness and efficiency.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first base station distributed unit (DU) may identify, based at least in part on information associated with a second base station DU, one or more resources for crosslink interference (CLI) measurement for the second base station DU. The first base station DU may perform one or more CLI measurements for a cell associated with the second base station DU based at least in part on the one or more resources. Numerous other aspects are provided.