Uplink Transmission Priority Handling for 5G PUSCH Conflict Resolution
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Solution Overview
Problem
In 5G communication systems, there is a challenge of managing uplink transmission conflicts between different services, particularly when a terminal simultaneously supports both low-priority and high-priority services, and a higher-priority service occurs during the scheduling of a Physical Uplink Shared Channel (PUSCH).
Innovation Solution
The proposed solution involves an uplink transmission method where a terminal receives cancellation indication information for a first PUSCH with lower priority and a scheduling grant for a second PUSCH with higher priority. Based on the time domain positions of these indications, the terminal performs corresponding behaviors, such as canceling the transmission of the low-priority PUSCH to ensure the transmission of the high-priority PUSCH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal transmits both low-priority and high-priority PUSCH simultaneously, then the service coverage is expanded, but transmission conflicts occur between different services
Solution Approach 1:
The patent implements dynamic priority-based resource management where the terminal can flexibly adjust transmission behavior based on received priority indicators. The network device dynamically assigns different priorities to PUSCH transmissions, and the terminal dynamically responds by selecting appropriate transmission schemes (simultaneous transmission, dropping low-priority, or dropping high-priority), thereby adapting to varying service requirements while maintaining reliable transmission.
2Loss of time
If the terminal prioritizes high-priority PUSCH transmission, then the timeliness of high-priority services is improved, but low-priority service transmission may be dropped
Solution Approach 1:
The patent applies local quality differentiation by treating different priority services differently. Based on the priority indicator received from the network device, the terminal selectively applies different transmission strategies to different PUSCH transmissions - high-priority services receive preferential treatment (timely transmission) while low-priority services are selectively dropped or deferred, ensuring that resource allocation matches service requirements.
Solution Approach 2:
The patent changes the transmission parameter (whether to transmit or drop) based on the priority indicator parameter. When the priority indicator indicates high-priority service, the terminal changes its transmission behavior to prioritize that service, potentially dropping low-priority transmissions. This parameter-based control mechanism allows flexible adaptation to different service priorities while maintaining overall system reliability.
3Ease of operation
If the terminal cancels low-priority PUSCH transmission, then the conflict resolution capability is improved, but the resource utilization efficiency decreases
Solution Approach 1:
The patent implements partial action by selectively canceling only the low-priority PUSCH transmission while maintaining high-priority transmission. Instead of canceling all transmissions or using complex arbitration mechanisms, the terminal applies partial cancellation based on priority indicators, resolving conflicts in a simple and efficient manner that maintains adequate resource utilization for critical services.
Data Source
AI summary
An uplink transmission method, an uplink transmission indication method, and a device are provided. The method includes: receiving cancellation indication information corresponding to a first physical uplink shared channel (PUSCH) and receiving a scheduling grant of a second PUSCH, where a priority of the first PUSCH is lower than a priority of the second PUSCH; and performing a corresponding terminal behavior according to time domain positions of the cancellation indication information and the scheduling grant.