Uplink Transmission Priority Control for 5G Terminals
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Solution Overview
Problem
In future radio communication systems like 5G, there is a lack of effective control mechanisms for managing uplink (UL) transmissions with different priorities that overlap in the same time domain, particularly across multiple carriers or cells, which affects latency and spectral efficiency.
Innovation Solution
A terminal equipped with a receiving section to gather information on simultaneous UL transmissions and a control section that manages these transmissions based on priority, allowing for appropriate scheduling and processing of UL transmissions with varying priorities across different carriers or cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UL transmissions with different priorities are allowed to overlap in the time domain across different carriers, then spectral efficiency and resource utilization are improved, but transmission reliability and latency control deteriorate due to lack of effective control mechanisms
Solution Approach 1:
The patent segments the uplink transmission control by introducing priority levels (first priority and second priority) for different UL transmissions. The terminal device divides transmission handling into priority-based groups, allowing high-priority transmissions to be controlled separately from low-priority ones, thus resolving the conflict between allowing overlaps for spectral efficiency while maintaining reliability through differentiated control mechanisms.
2Device complexity
If multiple UL transmissions with different priorities are simultaneously controlled without priority differentiation, then device complexity is reduced, but latency control and transmission quality deteriorate
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different UL transmissions based on their specific requirements. High-priority transmissions (e.g., URLLC) receive preferential treatment in terms of scheduling and resource allocation, while low-priority transmissions (e.g., eMBB) are handled differently. This localized differentiation in transmission quality ensures that latency-sensitive applications receive the necessary priority handling without requiring complete redesign of the entire control mechanism.
3Reliability
If priority-based control is implemented for overlapping UL transmissions, then transmission reliability and latency control are improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The patent implements dynamic priority-based control where the terminal device can flexibly adjust transmission handling based on the priority levels of overlapping UL transmissions. The control mechanism dynamically selects which transmission to prioritize or defer based on real-time priority assignments, allowing the system to adapt to different traffic conditions without requiring overly complex static control structures. This dynamic approach maintains reliability while keeping device complexity manageable through adaptive rather than rigid control logic.
Data Source
AI summary
To appropriately control one or more UL transmissions in which configuration of priorities is supported. A terminal according to an aspect of the present disclosure includes a receiving section that receives information related to simultaneous transmission of UL transmissions, and a control section that, when a plurality of UL transmissions with different priorities overlap in a time domain, controls transmission processing of the plurality of UL transmissions, based on the information related to the simultaneous transmission.