Inter-Cell Multi-TRP Resource Mapping for Signal Collision Avoidance
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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 collisions between uplink and downlink communications, resource element availability for reference signals, and simultaneous reception of multiple downlink signals due to UE capability limitations.
Innovation Solution
The proposed solution involves resource mapping techniques that allow wireless communication devices to determine and utilize resource elements for defined communications, including PDSCH, PUSCH, and other channels, by considering configuration indices and quasi-co-location sources, such as SSB, CSI-RS, and SRS, to manage overlapping communications and ensure efficient use of resources across multiple TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource elements are allocated for multiple downlink communications simultaneously, then the data transmission capacity is improved, but the UE capability limitations cause reception failures
Solution Approach 1:
The patent segments the resource element allocation by introducing a first set of resource elements for a first downlink communication and a second set of resource elements for a second downlink communication. This segmentation allows the UE to handle multiple downlink communications separately, avoiding the limitation of simultaneous reception while maintaining high data transmission capacity through efficient resource utilization.
2Productivity
If resource elements are shared between uplink and downlink communications, then the resource utilization efficiency is improved, but communication collisions occur
Solution Approach 1:
The patent resolves the collision between uplink and downlink communications by introducing a dimensional separation through different resource element sets. The first resource element set is configured for downlink communication while the second resource element set is configured for uplink communication, eliminating overlap in the resource domain and ensuring reliable communication while maintaining efficient resource utilization.
3Reliability
If resource elements are exclusively allocated to single communication, then communication reliability is improved, but resource waste increases
Solution Approach 1:
The patent implements multi-functionality in resource element allocation where the first resource element set can be used for first downlink communication and the second resource element set can be used for second downlink communication or uplink communication. This universal allocation approach ensures reliable communication through dedicated resource sets while reducing resource waste by allowing flexible reuse of the second resource element set for different communication directions.
Data Source
AI summary
Presented are systems, methods, apparatuses, or computer-readable media for resource mapping of inter-cell multi transmission/reception points (TRPs) operation. A wireless communication device may determine at least one resource element that is scheduled for a defined communication associated with a first configuration index, and is assigned for use for at least one signal associated with a second configuration index. The wireless communication device may perform the defined communication using resource elements other than the determined at least one resource element.