PDCCH Prioritization for Multi-TRP Wireless Reception
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Solution Overview
Problem
Current wireless communication systems face challenges in setting PDSCH default beam behavior for various operation modes, such as single TRP, single DCI multi-TRP, and multi-DCI multi-TRP, due to unknown default beam behavior and PDCCH prioritization issues.
Innovation Solution
The proposed solution involves extending PDCCH prioritization techniques to multi-DCI multi-TRP operation by specifying prioritization within CORESETs across cells associated with the same CORESETPoolIndex value, allowing UE to monitor PDCCH from multiple TRPs for enhanced operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PDCCH prioritization is applied to single TRP operation, then PDCCH monitoring efficiency is improved, but multi-DCI multi-TRP operation is disallowed
Solution Approach 1:
The patent segments PDCCH prioritization into two distinct modes: one for single TRP operation and another for multi-DCI multi-TRP operation. By separating the prioritization logic based on operation mode, the system can apply PDCCH prioritization efficiently for single TRP while simultaneously enabling multi-DCI multi-TRP operation without mutual interference, thus resolving the contradiction between monitoring efficiency and operational versatility
Solution Approach 2:
The patent introduces dynamic adaptability by making PDCCH prioritization behavior dependent on the configured operation mode. The system dynamically adjusts whether to apply PDCCH prioritization based on whether single TRP or multi-DCI multi-TRP operation is configured, allowing the system to optimize for efficiency when appropriate while maintaining versatility when needed
2Device complexity
If all TCI codepoints are mapped to one TCI state, then configuration simplicity is improved, but PDSCH default beam behavior becomes unknown
Solution Approach 1:
The patent applies local quality by differentiating TCI state assignment based on the specific operation mode and configuration. When multi-DCI multi-TRP operation is configured, the system assigns different TCI states to different codepoints locally, ensuring that PDSCH default beam information is properly defined. This localized differentiation resolves the contradiction by maintaining configuration simplicity only where applicable while ensuring beam information is available where required
3Adaptability or versatility
If PDCCH prioritization is extended to multi-DCI multi-TRP operation, then operational versatility is improved, but PDCCH monitoring complexity increases
Solution Approach 1:
The patent segments PDCCH monitoring into distinct procedures for different operation modes. For multi-DCI multi-TRP operation, separate monitoring procedures are defined that account for multiple TRPs and DCIs, preventing the complexity of one mode from interfering with the optimization of another. This segmentation allows the system to support versatile operation modes while managing monitoring complexity through mode-specific procedures
Solution Approach 2:
The patent changes monitoring parameters based on the configured operation mode. When multi-DCI multi-TRP operation is enabled, specific monitoring parameters are adjusted to accommodate the enhanced operational requirements. This parameter adaptation allows the system to achieve operational versatility while controlling complexity through configuration-dependent parameter settings
Data Source
AI summary
Various embodiments herein are directed to set physical downlink shared channel (PDSCH) default beam behavior for single transmission-reception point (TRP), single downlink control information (DCI) multi-TRP and multi-DCI multi-TRP operation, as well as physical downlink control channel (PDCCH) prioritization based on quasi-colocation (QCL) Type-D for multi-panel reception and single panel reception.