Power Reservation Rules for TTI Groups in Wireless Uplink
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Solution Overview
Problem
In wireless communication systems, allocating power efficiently across transmission time intervals (TTIs) with different durations and component carriers is challenging, leading to inadequate power for all TTIs, especially when different TTI durations and groups collide, resulting in insufficient transmit power for some carriers.
Innovation Solution
The described techniques involve grouping TTIs by duration, reserving power for each group, and applying additional power based on priority rules or TTI length, allowing for dynamic power allocation across TTIs and component carriers, ensuring that higher-priority TTIs receive additional power while lower-priority ones may be dropped to maintain a maximum transmit power limit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is allocated to every component carrier in carrier aggregation, then complete coverage is achieved, but the total transmit power exceeds the maximum power limit
Solution Approach 1:
The patent segments component carriers into different TTI duration groups (first TTI duration group and second TTI duration group) and applies different power reservation strategies to each group. This segmentation allows the system to manage power allocation in a structured manner, ensuring that critical carriers receive adequate power while staying within the maximum power limit.
Solution Approach 2:
The patent applies different power reservation rules to different TTI duration groups based on their specific requirements. The first TTI duration group (with longer duration) receives power reserved at a first ratio, while the second TTI duration group (with shorter duration) receives power reserved at a second ratio. This local differentiation ensures optimal power distribution tailored to each group's characteristics.
2Productivity
If power is reserved for each TTI duration group, then power distribution is optimized, but the complexity of power management increases
Solution Approach 1:
By dividing component carriers into distinct TTI duration groups with separate power reservation ratios, the patent creates a manageable structure for power allocation. Each group can be independently controlled through its own power control module, simplifying the overall management complexity while improving distribution efficiency.
Solution Approach 2:
The patent implements dynamic power adjustment where the power control module continuously monitors and adjusts the reserved power for each TTI duration group based on current transmission needs. This dynamic approach allows the system to adapt to changing conditions while maintaining a structured framework, balancing efficiency gains with manageable complexity.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may group multiple carriers with transmission time intervals (TTIs) having different durations into different physical uplink control channel (PUCCH) groups. The UE may reserve power per each PUCCH group. Alternatively, the UE may reserve power per each TTI duration across the one or more PUCCH groups.