Uplink Grant Timeline Freeze Points for UE Processing
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing uplink processing timelines due to complexities in determining PUCCH and PUSCH resources, particularly when multiple resources overlap, and issues with HARQ-ACK overriding and DCI timing ambiguity, leading to inefficient UE processing.
Innovation Solution
Introduce new UCI multiplexing timelines with defined anchor timings and freeze points to ensure proper handling of uplink grants, and simplify PUCCH resource determination by defining specific formats and priority-based processing times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing wireless communication systems use complex PUCCH and PUSCH resource determination methods, then more flexible resource allocation is achieved, but processing time and UE complexity increase
Solution Approach 1:
The patent segments the uplink processing timeline into distinct phases with defined anchor timings and freeze points. This segmentation allows the UE to process different types of uplink grants (PUCCH and PUSCH) separately and systematically, reducing processing time while maintaining flexible resource allocation through the structured timeline approach.
Solution Approach 2:
The patent introduces preliminary anchor timings and freeze points that are established before the actual resource allocation occurs. These pre-defined time references allow the UE to prepare and process uplink grants more efficiently, reducing processing time while maintaining adaptability through the structured timeline framework.
2Productivity
If existing systems handle multiple overlapping PUCCH and PUSCH resources, then resource utilization improves, but processing complexity and errors increase
Solution Approach 1:
The patent segments the handling of multiple overlapping resources by introducing distinct processing timelines for different resource types. The anchor timing mechanism divides the complex task of managing overlapping PUCCH and PUSCH resources into manageable segments, reducing processing complexity while maintaining high resource utilization through systematic handling.
Solution Approach 2:
The patent introduces anchor timings and freeze points as intermediary time references that mediate between the UE and the network for resource allocation. These intermediaries simplify the processing complexity by providing clear time boundaries and processing order, while still enabling efficient handling of multiple overlapping resources.
3Reliability
If HARQ-ACK overriding is implemented to handle timing ambiguities, then communication reliability improves, but processing time increases
Solution Approach 1:
The patent implements preliminary anchor timings and freeze points that are established before HARQ-ACK processing occurs. These pre-defined time references enable the UE to handle timing ambiguities proactively through the freeze point mechanism, ensuring communication reliability while minimizing the time required for HARQ-ACK overriding by providing clear processing boundaries.
Data Source
AI summary
Systems, methods and apparatuses for uplink (UL) processing timeline are discussed herein. In some embodiments a network node may define anchor timing for a user equipment (UE) by determining a starting symbol (Sx) for the anchor timing, and determining a processing time for the UE. The anchor timing defines a period reserved for the UE to process uplink grants for a slot. The network node may determine a freeze point that is positioned at least the processing time before Sx, and send, to the UE, the uplink grants prior to the freeze point.