Inter-Cell Multi-TRP Resource Mapping for Overlap-Resolved Scheduling
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Solution Overview
Problem
Existing 5G NR systems face challenges in efficiently mapping resources for inter-cell multi-transmission/reception point operations, particularly in handling resource collisions and ensuring simultaneous reception and transmission across multiple cells, which affect the reliability and robustness of wireless communications.
Innovation Solution
The proposed solution involves determining and utilizing specific resource elements for defined communications, such as PDSCH, PDSCH, and PUSCH, by considering configuration indices like TCI states, PCIs, and CORESET pools, and managing overlapping communications through prioritization and resource mapping strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource elements are allocated for inter-cell multi-TRP operations, then communication reliability is improved, but resource collision and scheduling complexity increase
Solution Approach 1:
The patent segments resource elements into different sets based on their association with specific TRPs and cells. It introduces separate resource element sets for first TRP communications and second TRP communications, with specific rules for handling overlapping resources. This segmentation allows the UE to manage complex inter-cell multi-TRP operations by processing resources in organized groups rather than individually, reducing scheduling complexity while maintaining communication reliability.
Solution Approach 2:
The patent introduces configuration indices (first configuration index and second configuration index) as intermediary identifiers that mediate between different TRPs and cells. These indices serve as a common reference framework that allows the UE to resolve conflicts and manage resource allocations without requiring complex direct coordination between all TRPs, thereby simplifying the scheduling process while maintaining reliable multi-TRP communication.
2Productivity
If multiple signals are mapped to resource elements, then communication capacity is improved, but signal interference and collision increase
Solution Approach 1:
The patent applies local quality by assigning different properties to different resource element sets based on their associated TRPs and cells. It defines specific mapping rules where resource elements are selectively allocated to different signals (PDSCH, PUSCH, SSB) based on local configuration indices and TRP associations. This ensures that signals with different requirements are mapped to appropriate resource elements, maximizing communication capacity while minimizing signal interference through localized optimization.
Solution Approach 2:
The patent performs preliminary action by pre-configuring resource element mappings and establishing clear association rules between resource elements, TRPs, and signals before actual communication occurs. The configuration indices and mapping procedures are predetermined, allowing the UE to proactively resolve potential interference issues and optimize signal placement before conflicts arise, thereby increasing communication capacity without significant interference.
3Reliability
If resource mapping is optimized for specific TRPs, then transmission reliability is improved, but flexibility and adaptability decrease
Solution Approach 1:
The patent introduces dynamic adaptability through configurable parameters and flexible mapping rules that can be adjusted based on actual communication conditions. The configuration indices and resource element associations are not fixed but can be dynamically configured to match different TRP scenarios and channel conditions. This allows the system to maintain optimized transmission reliability for specific TRP combinations while retaining the flexibility to adapt to changing network conditions and deployment scenarios.
Data Source
AI summary
Presented are systems, methods, apparatuses, or computer-readable media for scheduling performance of resource mapping of inter-cell multi transmission/reception points (TRPs) operation. A wireless communication device may receive, from a wireless communication node, an indication that a set of resources is scheduled for a first defined communication and a second defined communication. The first defined communication is associated with a first physical cell identity (PCI) value, and the second defined communication is associated with a second PCI value.