Enhanced SRS Configuration for Accurate CLI Measurement in 5G NR
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Solution Overview
Problem
Current wireless communication systems, particularly 5G NR, face challenges in accurately measuring cross-link interference (CLI) due to limitations in existing SRS configurations, which affect the ability to manage CLI effectively between user equipment (UEs) with different uplink and downlink slot formats.
Innovation Solution
The proposed solution involves enhancing the SRS configuration to allow for more flexible and accurate CLI measurement by supporting additional SRS configurations, such as measuring CLI SRS-RSRP in any OFDM symbol of a slot, increasing the number of symbols per measurement resource, and using additional sequence IDs, enabling better demodulation and reporting of CLI measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing SRS configurations are used for CLI measurement, then the system maintains simplicity in configuration, but the measurement precision and ability to manage CLI effectively deteriorates
Solution Approach 1:
The patent segments the SRS configuration into multiple independent parameters including measurement frequency bandwidth, time resources, comb size, and sequence IDs. This segmentation allows each parameter to be optimized independently for CLI measurement precision while maintaining manageable system complexity through modular configuration.
Solution Approach 2:
The patent introduces additional dimensions to the SRS configuration by enabling measurement in any OFDM symbol of a slot rather than limited to specific symbols, and by adding comb size and sequence ID parameters. This dimensional expansion provides more measurement opportunities and improves precision without fundamentally changing the basic measurement mechanism.
2Adaptability or versatility
If additional SRS configurations are supported for flexible CLI measurement, then the adaptability and measurement accuracy improve, but the device complexity increases
Solution Approach 1:
The patent designs the enhanced SRS configuration to serve multiple functions: CLI measurement, channel sounding, and interference management. The same SRS framework supports different measurement types and scenarios, reducing the need for separate dedicated mechanisms and thereby limiting the increase in UE processing complexity.
Solution Approach 2:
The patent implements dynamic SRS configuration where parameters such as measurement frequency bandwidth, time resources, and sequence IDs can be adjusted based on specific measurement needs. This dynamic adaptability allows the system to optimize for different scenarios without requiring permanent complex configurations, managing complexity through on-demand parameter selection.
Data Source
AI summary
Aspects described herein relate to cross-link interference (CLI) measurement based on enhanced sounding reference signal (SRS) in fifth generation new radio (5G NR). In an example, the aspects may include receiving, by a first user equipment (UE) from a network entity, a SRS configuration; measuring, by the first UE, CLI between the first UE and a second UE based on the SRS configuration; and transmitting, by the first UE to the network entity, a measurement report of the CLI measurement to trigger CLI management between the first UE and the second UE.