Overlapping Uplink Power Scaling Across Multiple Carriers
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing overlapping uplink transmissions due to power limitations, leading to dropped transmissions and inefficient power allocation across multiple carriers.
Innovation Solution
Implementing a power scaling factor based on a power offset to adjust the transmit power of overlapping uplink transmissions, ensuring that the total power does not exceed the maximum available power, thereby maintaining transmission quality across all carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple uplink transmissions are performed simultaneously on multiple carriers, then communication capability and data rate are improved, but total transmit power exceeds maximum available power
Solution Approach 1:
The patent changes the power parameter by introducing a power offset value that adjusts the transmit power of specific uplink transmissions. By modifying the power parameter dynamically based on overlap detection and priority levels, the system enables simultaneous multi-carrier transmissions while keeping total power within available limits.
Solution Approach 2:
The system dynamically adjusts transmit power levels based on real-time conditions. When an uplink transmission overlaps with a higher priority transmission, the power is dynamically reduced by applying a power offset. This dynamic power management allows flexible simultaneous transmissions across multiple carriers while adapting to changing priority requirements.
2Reliability
If transmit power is increased for overlapping uplink transmissions, then transmission quality is improved, but power allocation becomes inefficient and total power exceeds maximum available power
Solution Approach 1:
The patent applies local quality by differentiating power allocation based on transmission priority and overlap conditions. Instead of uniformly reducing power for all overlapping transmissions, the system applies power offsets selectively to specific transmissions based on their priority level and overlap characteristics. This ensures that high-priority transmissions maintain quality while lower-priority transmissions receive reduced power, optimizing overall power allocation efficiency.
3Power
If power scaling is applied to all overlapping uplink transmissions, then total power constraint is satisfied, but transmission quality deteriorates and transmissions may be dropped
Solution Approach 1:
The patent segments uplink transmissions into different priority levels (first level and second level). By dividing transmissions into segments with different priorities, the system can apply power offsets selectively rather than uniformly to all transmissions. This segmentation ensures that high-priority transmissions are protected from power reduction while lower-priority transmissions absorb the power scaling, preventing transmission drops for critical data.
Solution Approach 2:
The system changes power parameters differently for different transmission segments based on priority. For first-level priority transmissions, no power offset is applied, maintaining full power and ensuring reliable delivery. For second-level priority transmissions, power offsets are applied to reduce total power consumption. This differentiated parameter change maintains transmission quality for critical communications while satisfying overall power constraints.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network node, a first uplink transmission using a first transmit power that is based at least in part on: a first power level associated with the first uplink transmission, and a power scaling factor based at least in part on a power offset. The UE may transmit, to the network node, a second uplink transmission, at least partially overlapping in time with the first uplink transmission, using a second transmit power that is based at least in part on: a second power level associated with the second uplink transmission, a maximum available transmit power, and the first transmit power. Numerous other aspects are described.