Uplink-Sidelink Priority Rules to Avoid MAC Transmission Deadlocks
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Solution Overview
Problem
Existing communication systems face challenges in efficiently determining transmission priority for uplink and sidelink data, leading to potential deadlocks and unreasonable priority rules, especially in scenarios involving multiple types of MAC CEs and MAC SDUs.
Innovation Solution
A method and terminal device are developed to determine transmission priority by identifying the highest priority data within uplink and sidelink data, using specific priority rules to resolve conflicts and avoid deadlocks, including priority rules for MAC CEs and MAC SDUs based on threshold comparisons and logical channel priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional priority rules are used for uplink and sidelink data transmission, then the system can handle basic transmission scenarios, but deadlocks occur and transmission efficiency deteriorates when multiple types of MAC CEs and MAC SDUs are involved
Solution Approach 1:
The patent segments the uplink data into different types (TYPE1 MAC CE, TYPE2 MAC CE, and MAC SDU) and applies different priority determination rules to each type. This segmentation allows the system to handle each data type appropriately, avoiding deadlocks while maintaining transmission efficiency. The segmentation principle resolves the contradiction by enabling fine-grained control over different data types rather than applying a single blanket priority rule.
2Reliability
If priority rules are simplified to avoid deadlocks, then transmission reliability improves, but the complexity of handling multiple data types increases
Solution Approach 1:
The patent applies local quality by assigning different priority determination characteristics to different data types. TYPE1 MAC CE uses one set of priority rules, TYPE2 MAC CE uses another set, and MAC SDU uses yet another approach. This local differentiation resolves the contradiction by tailoring the priority rule complexity to the specific requirements of each data type, rather than applying uniform complexity across all data types.
Solution Approach 2:
The priority determination mechanism is made dynamic by selecting different priority rules based on the type of data being transmitted. The system dynamically adapts the priority rule complexity to match the data type, using simpler rules for certain MAC CE types and more nuanced rules for others. This dynamic approach resolves the contradiction by adjusting complexity in real-time based on transmission needs.
3Ease of manufacture
If existing priority determination methods are used, then implementation is straightforward, but unreasonable priority rules lead to transmission deadlocks
Solution Approach 1:
The patent changes the parameters of priority determination by introducing type-specific rules that modify how priority is calculated and applied. Instead of using a single static priority parameter, the system changes the priority determination parameters based on data type, which resolves deadlocks while maintaining reasonable implementation complexity. The parameter changes enable the system to adapt to different data types without requiring complete redesign of the priority mechanism.
Data Source
AI summary
The present disclosure relates to a method and a terminal device for determining transmission priority. Wherein the method for determining transmission priority includes: obtaining, by a terminal device, corresponding priority rule according to data with highest priority in uplink data, and determining transmission order of the uplink data and sidelink data.