UCI Multiplexing Across Priorities With UE Timing Constraints
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently multiplexing uplink control information (UCI) across different service types with varying priorities and processing capabilities, such as eMBB and URLLC, due to differing processing times and timeline conditions.
Innovation Solution
The proposed solution involves multiplexing acknowledgment feedback for one service type (e.g., eMBB or URLLC) in the uplink transmission of another service type by defining conditions that accommodate different processing capabilities, allowing UCI to be piggybacked on PUSCH or PUCCH transmissions, thereby meeting the processing times dictated by the UE's capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UCI of different priorities is multiplexed in the same PUCCH resource, then resource utilization efficiency is improved, but interference between different priority UCIs occurs
Solution Approach 1:
The PUCCH resource is segmented into multiple non-overlapping time resources based on priority. High priority UCI and low priority UCI are assigned to different time slots, ensuring that they do not interfere with each other while still utilizing the same frequency resources. This segmentation resolves the contradiction by maintaining resource utilization efficiency through frequency reuse while eliminating interference through temporal separation.
Solution Approach 2:
The patent introduces a time dimension to resolve the conflict. By mapping different priority levels to different time resources (time slots or symbols) within the same PUCCH structure, the system achieves multi-dimensional resource allocation. This allows high priority and low priority UCIs to coexist without interference, improving overall resource utilization while maintaining priority differentiation.
2Adaptability or versatility
If UCI multiplexing is supported across different priorities, then system flexibility and adaptability are improved, but determination of transmission parameters becomes more complex
Solution Approach 1:
The patent applies local quality by assigning different transmission parameters to different priority levels. Each priority level has its own configured set of parameters (such as time resources, frequency resources, and modulation schemes) that are optimized for its specific requirements. This allows the system to maintain high adaptability for multi-priority support while keeping the parameter determination process manageable through localized parameter sets rather than global complexity.
Solution Approach 2:
Transmission parameters for different priority levels are pre-configured and stored in the system before actual UCI transmission occurs. When UCI needs to be transmitted, the appropriate pre-configured parameters are selected based on priority, eliminating the need for complex real-time parameter determination. This preliminary action reduces device complexity during operation while maintaining flexible multi-priority support.
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AI summary
Certain aspects of the present disclosure provide techniques for processing physical downlink shared channel (PDSCH) transmissions scheduled with non-numeric timing feedback indicators.