Uplink Preemption Indication Management via Timing Thresholds
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Solution Overview
Problem
Current wireless communication systems face challenges in effectively managing uplink preemption indications, leading to potential interference and inefficient resource utilization due to delays in processing preemption signals.
Innovation Solution
A method and apparatus for user equipment (UE) to selectively preempt uplink grants based on the receive time of preemption indications, a processing time threshold, and the preemption time of the grant, allowing for timely decision-making to reduce interference and optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the UE processes preemption indications with delayed decision-making, then the processing complexity is reduced, but interference increases and resource utilization efficiency deteriorates
Solution Approach 1:
The UE performs preliminary evaluation of preemption indications by comparing receive time with preemption time to determine whether further processing is warranted. This preliminary action filters out time-invalid indications before full processing, reducing interference responses while maintaining efficient resource utilization for valid preemptions.
Solution Approach 2:
The UE autonomously evaluates and processes preemption indications based on timing criteria without requiring external control. By self-determining which indications to act upon based on the time difference between receive and preemption times, the UE reduces unnecessary interference while optimizing resource usage efficiency.
2Measurement precision
If the UE evaluates all preemption indications thoroughly, then processing accuracy is improved, but processing time increases
Solution Approach 1:
The UE performs a preliminary timing check by comparing the receive time of preemption indications with the preemption time to calculate a time difference. This preliminary action filters out indications that would result in invalid or excessive processing delays, ensuring that full processing accuracy is applied only to time-critical cases.
Solution Approach 2:
The UE dynamically adjusts its processing behavior based on the calculated time difference between receive and preemption times. When the time difference indicates sufficient processing window, the UE performs thorough evaluation; when the time difference is insufficient, the UE skips or reduces processing, optimizing the balance between accuracy and time loss adaptively.
3Productivity
If the UE implements selective preemption based on timing criteria, then resource utilization is improved, but processing complexity increases
Solution Approach 1:
The UE implements a preliminary timing-based filter that compares receive time with preemption time to determine whether to proceed with full preemption processing. This simple preliminary check enables selective preemption that improves resource utilization while adding minimal processing complexity compared to always-processing or never-processing approaches.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a preemption indication identifying at least one symbol of a grant for preemption. The user equipment may selectively preempt the at least one symbol of the grant based at least in part on a receive time of the preemption indication, a processing time threshold, and a preemption time of the at least one symbol of the grant. Numerous other aspects are provided.