Full-Duplex Reference Signal Configuration for Wireless CSI Reporting
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring reference resources for full-duplex and half-duplex communications, leading to suboptimal channel state information (CSI) reporting and potential interference issues.
Innovation Solution
The proposed solution involves configuring user equipment (UE) to receive and transmit CSI reports based on full-duplex and half-duplex reference signals, with specific parameters indicating reference resources that define timing windows for measurement and reporting, allowing for accurate CSI parameter determination and transmission timing aligned with duplexing modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex reference signals are used for CSI reporting, then communication efficiency and spectral utilization are improved, but interference management and signal accuracy become more difficult
Solution Approach 1:
The patent segments the reference signal configuration into separate full-duplex and half-duplex reference signal resources, allowing the UE to selectively measure and report based on the specific duplexing mode. This segmentation enables clear distinction between the two modes and prevents interference in measurement, resolving the contradiction by maintaining signal accuracy while enabling full-duplex efficiency where applicable.
Solution Approach 2:
The patent introduces a network entity as an intermediary that configures and transmits different reference signals based on the required duplexing mode. This intermediary role allows the system to adaptively select the appropriate reference signal type, mediating between the desire for full-duplex efficiency and the need for accurate measurement, thereby resolving the technical contradiction.
2Adaptability or versatility
If reference resources are configured for both full-duplex and half-duplex modes, then system flexibility and adaptability are improved, but configuration complexity and processing requirements increase
Solution Approach 1:
The patent configures reference signal resources that can serve multiple functions - the same reference signal framework supports both full-duplex and half-duplex modes through parameter configuration rather than requiring entirely separate systems. This multi-functionality approach enables system flexibility while avoiding the complexity of maintaining completely separate reference signal configurations.
Solution Approach 2:
The patent implements dynamic configuration where the network entity can adaptively select between full-duplex and half-duplex reference signals based on current communication conditions. This dynamic approach allows the system to be flexible and adaptable to different scenarios while keeping the UE processing requirements manageable by only handling the active mode at a time rather than simultaneously processing both modes.
3Reliability
If CSI reporting timing is aligned with reference resources, then measurement accuracy and reporting reliability are improved, but time sensitivity and processing speed requirements increase
Solution Approach 1:
The patent configures reference signals in advance before the actual CSI measurement and reporting phase. By preparing the reference signal resources beforehand and establishing the timing relationship between reference signal reception and CSI reporting, the system ensures measurement accuracy and reporting reliability while allowing the UE adequate processing time, thus avoiding excessive speed requirements.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support channel state information (CSI) reporting based on full-duplex reference signals, half-duplex reference signals, or both. A user equipment (UE) may receive, from a network entity, a CSI reporting configuration that includes one or more parameters for full-duplex CSI reporting, half-duplex CSI reporting, or both. The network entity may transmit a full-duplex reference signal, a half-duplex reference signal, or both to the UE based on the CSI reporting parameters. The UE may obtain measurements of the reference signals. The UE may transmit one or more CSI reports based on the measurements. The CSI reports may be transmitted at least a threshold time period after a corresponding reference resource. The threshold time period may be based on a duplexing mode associated with the CSI report.