Uplink Grant Prioritization for Overlapping WTRU Transmissions
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Solution Overview
Problem
Existing wireless transmit/receive units (WTRUs) face challenges in efficiently handling overlapping uplink resources due to insufficient processing time, leading to inefficiencies and potential data loss during uplink transmissions.
Innovation Solution
A method for determining available processing times and designating prioritized uplink resources based on thresholds, allowing for single or separate transmissions and preemption procedures to manage overlapping grants, ensuring timely and prioritized data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the WTRU processes multiple overlapping uplink grants simultaneously, then data transmission reliability improves, but processing time requirements increase beyond available thresholds
Solution Approach 1:
The patent changes the parameter of grant processing by introducing different processing thresholds (first threshold and second threshold) based on available processing time. When processing time exceeds the first threshold, the WTRU processes both grants; when it falls between thresholds, the WTRU processes only the second grant with higher priority. This parameter-based decision-making resolves the contradiction by adapting processing behavior to available time resources.
Solution Approach 2:
The patent segments the grant processing into distinct time-based scenarios: (1) sufficient processing time where both grants are processed, (2) limited processing time where only the second grant is processed, and (3) preemptive processing where the second grant interrupts the first. This segmentation allows the system to handle overlapping grants appropriately based on available processing time.
2Productivity
If the WTRU transmits on both overlapping uplink resources, then resource utilization improves, but transmission coordination complexity increases
Solution Approach 1:
The patent introduces dynamic transmission coordination where the WTRU's behavior adapts based on available processing time. The system dynamically selects between transmitting on both resources, transmitting only on the second resource, or preempting the first transmission based on real-time processing time measurements. This dynamic approach optimizes resource utilization while managing coordination complexity through adaptive decision-making.
Solution Approach 2:
The patent applies preliminary action by determining the available processing time before making transmission decisions. The WTRU calculates processing time thresholds in advance and uses these pre-determined values to guide subsequent transmission coordination, avoiding complex real-time arbitration during the actual transmission moment.
3Manufacturing precision
If the WTRU implements preemption procedures for overlapping grants, then transmission timing accuracy improves, but protocol complexity increases
Solution Approach 1:
The patent uses parameter changes by introducing specific time thresholds (first threshold and second threshold) that trigger different preemption behaviors. When available processing time falls below the first threshold, the WTRU implements preemption; when it falls between thresholds, selective processing occurs. This parameter-based approach provides clear, implementable rules for preemption timing.
Solution Approach 2:
The patent enables self-service preemption where the WTRU autonomously determines whether to preempt the first grant based on its own processing time measurements. The device independently evaluates available processing time against predefined thresholds and makes preemption decisions without requiring complex network coordination, simplifying the overall protocol while maintaining timing accuracy.
Data Source
AI summary
Systems, methods, and devices for transferring data with different reliabilities. A wireless transmit/receive unit (WTRU) is configured with a first modulation and coding set (MCS) table and a second MCS table. The WTRU monitors for a radio network temporary identifier (RNTI). If the WTRU detects a first value for the RNTI, data is transferred with a first reliability. If the WTRU detects a second value for the RNTI, data is transferred with a second reliability.