Uplink Repetition Cancellation for Priority Collision Resolution
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Solution Overview
Problem
Existing 5G NR technologies face inefficiencies in resolving collisions between overlapping uplink transmissions with different priorities, particularly when one transmission is repetitive, leading to suboptimal data transmission efficiency.
Innovation Solution
Implement collision resolution procedures at the user equipment (UE) level to identify and manage overlapping uplink transmissions with different priorities, including repetitive transmissions, by canceling low-priority transmissions and scheduling them in slots where they do not overlap with high-priority transmissions, and performing independent collision resolution in multiple slots as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If low-priority repetitive uplink transmissions are scheduled across multiple slots, then data transmission volume is increased, but collision with high-priority transmissions occurs leading to reduced transmission efficiency
Solution Approach 1:
The patent applies preliminary action by performing collision resolution procedures in advance before actual transmissions occur. The network device determines whether collisions will happen between low-priority repetitive transmissions and high-priority transmissions, and proactively cancels or adjusts the low-priority transmissions to prevent collisions before they occur, thereby maintaining high transmission efficiency while still allowing data to be sent in alternative slots.
Solution Approach 2:
The patent segments the collision resolution process into slot-specific independent procedures. Each slot is evaluated separately for collisions between low-priority and high-priority transmissions, allowing granular control over which specific repetitive transmissions to cancel. This segmentation enables the system to preserve non-colliding low-priority transmissions while only canceling those that would conflict with high-priority traffic.
2Reliability
If collision resolution procedures are performed in each slot for repetitive transmissions, then transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent applies local quality by making collision resolution independent for each slot. The determination of whether to cancel low-priority transmissions is made locally for each slot based on that slot's specific collision conditions, rather than applying a uniform rule across all slots. This allows the system to maintain high reliability by addressing each slot's unique situation while avoiding the complexity of a monolithic resolution system.
3Reliability
If low-priority transmissions are canceled to resolve collisions with high-priority transmissions, then high-priority transmission reliability is improved, but low-priority data loss increases
Solution Approach 1:
The patent applies periodic action by scheduling low-priority repetitive transmissions across multiple slots rather than concentrating them in one slot. When a collision is detected in one slot, the low-priority transmission is canceled only for that specific slot and rescheduled for another slot. This periodic distribution allows the system to protect high-priority transmissions while still delivering low-priority data through alternative time opportunities, reducing overall data loss.
Data Source
AI summary
This disclosure relates to collision resolution for overlapping uplink transmissions, and includes a method and apparatus for identifying a plurality of scheduled uplink transmissions that overlap in at least a first slot and a second slot, wherein the plurality of uplink transmissions comprises a high priority uplink transmission scheduled for repetitive transmission across at least a first slot and a second slot and further comprises one or more uplink transmissions scheduled in the first slot and two or more uplink transmissions scheduled in the second slot, wherein the two or more uplink transmissions scheduled in the second slot comprise at least a first low priority uplink transmission and a second high priority uplink transmission; and performing a first collision resolution procedure in the first slot and performing a second collision resolution procedure in the second slot, the second collision resolution procedure being independent of the first collision resolution procedure.