UE Uplink Power Allocation for Positioning Signal Priority
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In uplink transmission scenarios where the total transmit power of user equipment exceeds a power threshold, existing systems struggle to effectively allocate power to uplink transmissions, particularly for sounding reference signals and positioning state information, leading to potential transmission failures.
Innovation Solution
A power allocation method and apparatus that prioritize power allocation based on predefined or network-indicated priorities for uplink transmissions, including sounding reference signals for positioning (SRS_pos) and positioning state information (PSI), ensuring that the total transmit power remains within the threshold by reallocating power according to specific priority rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE increases transmit power for positioning signals (SRS_pos and PSI), then positioning accuracy is improved, but the total transmit power exceeds the power threshold
Solution Approach 1:
The patent changes the power allocation parameters by introducing priority-based power distribution. When total transmit power would exceed the threshold, the system adjusts the power parameters of different uplink transmissions based on their priorities, ensuring positioning signals receive adequate power while maintaining compliance with power thresholds.
Solution Approach 2:
The patent applies local quality by differentiating power allocation for different signal types. Positioning signals (SRS_pos and PSI) are assigned higher priority and receive preferential power allocation compared to other uplink transmissions, ensuring they maintain sufficient power for accurate positioning while managing overall power consumption.
2Ease of operation
If the UE allocates power equally to all uplink transmissions, then simplicity is maintained, but positioning signal transmission reliability deteriorates
Solution Approach 1:
The patent implements differentiated power allocation where positioning signals receive preferential treatment. By assigning priority levels to different uplink transmissions and allocating power according to these priorities, the system ensures positioning signals maintain high transmission reliability while keeping the allocation mechanism manageable through clear priority rules.
Solution Approach 2:
The UE autonomously performs priority-based power allocation without requiring complex external control. The device automatically identifies positioning signals, assigns them higher priority, and reallocates power accordingly when threshold violations are detected, enabling reliable positioning transmission through self-service power management.
3Reliability
If the UE reallocates power dynamically based on priority, then positioning transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent manages complexity by changing the power allocation parameter structure. Instead of complex continuous optimization, the system uses discrete priority levels and threshold-based triggers. When total power exceeds the threshold, pre-defined priority rules automatically dictate power reallocation, simplifying the control logic while maintaining positioning reliability.
Solution Approach 2:
The UE performs autonomous priority-based power reallocation without requiring complex network control or external intervention. The device independently identifies positioning signals, determines their priority, and adjusts power allocation accordingly, reducing overall system complexity while ensuring reliable positioning transmission.
Data Source
AI summary
A power allocation method includes: in a case that a total transmit power of UE on a time domain unit is greater than a power threshold, allocating, by the UE, a transmit power to an uplink transmission on the time domain unit according to a power allocation priority. The uplink transmission includes at least one of a SRS_pos or PSI, and the power allocation priority includes a power allocation priority of the uplink transmission.