Uplink Transmission Prioritization via Group-Based Cancellation
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Solution Overview
Problem
Current wireless communication systems lack a mechanism to effectively prioritize between overlapping uplink transmissions based on additional factors beyond priority levels, leading to inefficient handling of simultaneous uplink transmissions in the time domain.
Innovation Solution
The implementation of a method and apparatus for user equipment (UE) to receive signaling and control messages that schedule overlapping uplink transmissions, allowing for prioritization configurations based on transmission groups, such as control resource set pool index, uplink beam, and antenna port, enabling cancellation of overlapping portions and prioritization of high-priority over low-priority transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE cancels overlapping uplink transmissions based on priority levels alone, then the high-priority transmission is maintained, but the low-priority transmission is dropped without considering additional factors like transmission group
Solution Approach 1:
The patent applies local quality by differentiating transmission groups (e.g., first transmission group and second transmission group) with distinct prioritization rules. Instead of uniform prioritization, the system assigns different cancellation behaviors to different transmission groups based on their specific characteristics, such as whether they are configured grant-based or dynamic grant-based transmissions.
Solution Approach 2:
The patent implements dynamic prioritization by allowing the UE to determine cancellation based on multiple dynamic factors including transmission group type, priority level, and time-domain overlap. The prioritization configuration is not fixed but adapts to the specific characteristics of each transmission scenario, enabling flexible handling of overlapping transmissions.
2Ease of operation
If the UE uses simple priority-based cancellation, then the processing complexity is low, but the system cannot handle diverse transmission scenarios effectively
Solution Approach 1:
The patent segments the uplink transmission management into distinct transmission groups (first transmission group for configured grant-based, second transmission group for dynamic grant-based). This segmentation allows the UE to apply different cancellation rules to different segments, improving system efficiency while maintaining manageable processing complexity through structured organization.
Solution Approach 2:
The patent changes the prioritization parameters from simple priority levels to a multi-parameter system including transmission group type, priority level, and time-domain overlap characteristics. This parameter expansion enables the UE to handle diverse transmission scenarios effectively, improving system efficiency while the structured approach keeps processing manageable.
3Loss of substance
If the UE transmits all scheduled uplink transmissions regardless of overlap, then no data is dropped, but the system resources are wasted due to simultaneous transmissions
Solution Approach 1:
The patent applies partial action by canceling only the overlapping portions of low-priority transmissions rather than entirely dropping them. The UE can transmit non-overlapping parts of low-priority transmissions while canceling only the conflicting portions, thereby reducing data loss while avoiding the energy waste of transmitting all scheduled transmissions regardless of overlap.
Solution Approach 2:
The patent converts the harmful effect of time-domain overlap (which causes interference and requires cancellation) into a beneficial prioritization mechanism. By using the overlap information to trigger selective cancellation based on transmission group and priority, the system achieves efficient resource utilization while minimizing data loss, turning the potential harm of simultaneous transmissions into a useful decision-making criterion.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive signaling that schedules a set of uplink transmissions that at least partially overlap in a time domain, the set of uplink transmissions including at least one dynamic grant based uplink transmission and at least one configured grant based uplink transmission, each uplink transmission is associated with a corresponding transmission group of a set of available transmission groups for simultaneous serving cell transmissions. The UE may receive a control message indicating a prioritization configuration for the set of uplink transmissions that at least partially overlap in the time domain. The UE may cancel at least an overlapping portion of one uplink transmission in the set of uplink transmissions based at least in part on the at least partial overlap in the time domain, the corresponding transmission group, and the prioritization configuration.