Full Duplex Capability Signaling for CSI Reporting
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing channel state information (CSI) reports for full duplex (FD) operations, leading to limitations in the number of supported reference signal resources and potential performance degradation in user equipment (UE).
Innovation Solution
The proposed solution involves transmitting capability signaling associated with a codebook for CSI reports, indicating the maximum number of supported reference signal resources for codebook reporting in FD operations. This capability signaling is based on changed counting criteria or codebook UE features, allowing for appropriate counting of resources for both half-duplex (HD) and FD operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the maximum number of supported reference signal resources is increased for full duplex operation, then the channel state information reporting capability is improved, but the device complexity and capability burden on the UE increases
Solution Approach 1:
The patent applies parameter changes by introducing new counting criteria specific to full duplex operation. Instead of using the same counting method as half-duplex operation, the system changes the parameter for counting reference signal resources based on the operational mode. This allows the UE to accurately report its capability for full duplex operations without being constrained by legacy counting methods, thereby improving adaptability while managing complexity through mode-specific parameters.
Solution Approach 2:
The patent segments the capability reporting mechanism into distinct counting criteria for different operation modes. By separating the counting methodology for half-duplex and full-duplex operations, the system can independently optimize each mode's capability assessment. This segmentation allows the UE to report capabilities specific to full duplex operations without conflating them with legacy half-duplex capabilities, thus improving versatility while maintaining manageable complexity through clear operational mode differentiation.
2Reliability
If legacy counting criteria are used for full duplex operation, then compatibility with existing systems is maintained, but the number of supported reference signal resources is limited
Solution Approach 1:
The patent applies dynamics by making the counting criteria adaptive to the operational mode. The system dynamically switches between legacy counting criteria for half-duplex operations and new full-duplex-specific counting criteria when needed. This dynamic approach maintains compatibility with existing systems during half-duplex operations while enabling enhanced capability in full-duplex mode, thus balancing reliability through compatibility with adaptability through mode-dependent resource support.
Solution Approach 2:
The patent implements universality by creating a unified capability reporting framework that serves both half-duplex and full-duplex operations. The framework incorporates both legacy counting criteria and new full-duplex counting criteria within a single system, allowing it to universally handle different operation modes. This multi-functional approach ensures that existing systems remain compatible while the system can also support enhanced full-duplex capabilities, thereby achieving both reliability and adaptability.
3Measurement precision
If the codebook UE features are modified for full duplex operation, then the accuracy of capability assessment is improved, but the signaling complexity increases
Solution Approach 1:
The patent applies local quality by introducing full-duplex-specific counting criteria that are locally optimized for assessing UE capability in full-duplex operations. Instead of applying a single universal counting method, the system uses different counting criteria tailored to the specific requirements of full-duplex operations. This local optimization improves the accuracy of capability assessment for full-duplex mode while keeping the signaling complexity manageable by applying the enhanced criteria only where needed, rather than throughout the entire capability reporting framework.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit capability signaling associated with a codebook for a channel state information (CSI) report, the capability signaling indicating a maximum number of supported reference signal resources for codebook reporting in a full duplex operation. The UE may receive, based at least in part on the capability signaling, one or more CSI report configurations indicating a number of reference signal resources for the full duplex operation. Numerous other aspects are described.