Semi-Persistent CSI-IM Interference Measurement
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently measuring interference, particularly in future-generation communication systems that require enhanced mobile broadband, massive machine-type communications, and ultra-reliable and low-latency communications, due to increased complexity and the need for reduced overhead in interference measurement processes.
Innovation Solution
The proposed method involves configuring semi-persistent channel state information-interference measurement (CSI-IM) configurations in wireless communication systems, allowing for on-demand interference measurement using aperiodic CSI-IM resources, which reduces overhead by only measuring interference when needed and using aperiodic CSI-IM configurations for interference calculation and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional interference measurement methods are used in future-generation communication systems, then interference measurement capability is provided, but signaling overhead increases and system complexity increases
Solution Approach 1:
The patent applies dynamics by transitioning from static periodic interference measurement to dynamic aperiodic interference measurement. The gNB can dynamically trigger interference measurement requests based on current channel conditions and traffic demands, allowing the measurement configuration to adapt flexibly to changing system states rather than following rigid periodic schedules
Solution Approach 2:
The patent changes the temporal parameter of interference measurement from periodic fixed intervals to aperiodic variable intervals. By modifying when measurements occur based on network conditions, traffic patterns, and channel quality, the system optimizes measurement timing to reduce unnecessary measurements while maintaining measurement accuracy when needed
2Measurement precision
If periodic interference measurement is performed continuously, then interference measurement accuracy is maintained, but signaling overhead increases
Solution Approach 1:
The patent inverts the periodic action principle by implementing aperiodic measurement. Instead of performing measurements at fixed periodic intervals regardless of need, the system performs measurements only when triggered by specific conditions such as channel quality thresholds, traffic demands, or gNB decisions, thereby eliminating redundant periodic signaling
Solution Approach 2:
The system implements self-service by enabling the gNB to autonomously decide when interference measurement is necessary based on monitored system conditions. The gNB evaluates current channel state, traffic patterns, and quality metrics to self-determine optimal measurement timing without requiring external scheduling or fixed periodic commands
3Loss of information
If aperiodic CSI-IM configuration is used for interference measurement, then signaling overhead is reduced, but measurement flexibility requirements increase
Solution Approach 1:
The patent applies dynamics by implementing flexible aperiodic measurement triggering mechanisms. The gNB can dynamically adjust measurement timing, frequency, and configuration based on real-time channel conditions, traffic demands, and quality requirements, providing adaptability without requiring continuous periodic signaling
Data Source
AI summary
A method for measuring interference by a terminal in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving interference measurement configuration information including a semi-persistence channel state information-interference (CSI-IM) configuration; receiving a request which indicates measurement of the semi-persistence CSI-IM configuration; and measuring the semi-persistence CSI-IM configuration in response to the received request, wherein the semi-persistence CSI-IM configuration may indicate CSI-IM which is performed at predetermined periods during a predetermined time interval.