CLI Reporting Priority and Timing for Wireless Interference Control
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Solution Overview
Problem
Existing wireless communications systems face challenges in efficiently generating and reporting cross-link interference (CLI) measurements, which leads to increased interference and reduced throughput.
Innovation Solution
User equipment (UE) reports channel state feedback and CLI measurements to a network entity, including indicators and values, and adjusts reporting based on allocated time and priority, facilitating minimization of CLI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE reports detailed CLI measurements and channel state feedback, then the network entity can minimize interference more effectively, but the reporting overhead and processing complexity increase
Solution Approach 1:
The patent segments CLI measurement reporting into different types (e.g., absolute CLI measurements, differential CLI measurements, CLI indicators) that can be reported selectively based on network needs and UE capabilities. This segmentation allows the network to receive detailed interference information when necessary while reducing overhead during normal operation, thus resolving the contradiction between interference minimization effectiveness and reporting complexity.
Solution Approach 2:
The patent implements partial reporting where the UE reports only the most relevant CLI measurement components or aggregated statistics rather than complete raw measurement data in all cases. This partial action approach provides sufficient information for interference minimization while significantly reducing the reporting overhead and processing complexity.
2Speed
If the UE performs frequent CLI measurements and reporting, then the interference management becomes more responsive, but the power consumption and processing load increase
Solution Approach 1:
The patent implements periodic CLI measurement and reporting mechanisms where the UE performs measurements at configured intervals rather than continuously. The reporting frequency can be adjusted based on interference conditions, network requirements, and UE battery status. This periodic action maintains responsive interference management while significantly reducing power consumption compared to continuous monitoring.
Solution Approach 2:
The patent introduces dynamic adaptation of measurement and reporting parameters based on current system conditions. The UE can adjust measurement frequency, reporting granularity, and activation of different reporting modes based on battery charge level, interference severity, and network instructions. This dynamic behavior optimizes the balance between responsiveness and power consumption.
3Measurement precision
If the network entity allocates more time for CLI measurement and report generation, then the measurement accuracy improves, but the latency for interference mitigation increases
Solution Approach 1:
The patent implements preliminary CLI measurements where the UE performs measurements in advance of when the results are needed for scheduling decisions. Measurement resources are configured ahead of time, and the UE maintains a buffer of recent measurement data. This preliminary action allows the network to make quick interference mitigation decisions without waiting for new measurements, thus reducing latency while maintaining accuracy.
Solution Approach 2:
The patent employs parameter changes in measurement configuration, where the measurement bandwidth, resource allocation, and averaging parameters can be dynamically adjusted. The network can configure higher precision measurements when interference conditions warrant it and accept lower precision during normal conditions, thus balancing measurement accuracy with response time requirements.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In one aspect, a UE may report channel state feedback (CSF) to a network entity based on channel state information (CSI) measurements and CLI measurements. In another aspect, a UE may explicitly report CLI measurements to a network entity. In yet another aspect, a UE may report a signal-to-interference-plus-noise ratio (SINR) to a network entity based on CLI measurements, and the network entity may trigger the UE to perform further CLI measurements on signals received from other UEs based on the SINR. In yet another aspect, a UE may generate a report using CLI measurements based on whether the UE is allocated enough time to generate and transmit the report. In yet another aspect, a UE may identify a suitable priority for reporting CLI to a network entity.