UE Uplink Power Allocation for Normal and Positioning SRS
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Solution Overview
Problem
In wireless communication systems, especially in scenarios involving carrier aggregation (CA) or dual connectivity (DC), the limited transmit power of user equipment (UE) poses challenges when simultaneously transmitting multiple uplink signals, including normal sounding reference signals (SRS) and positioning SRS, leading to potential power overloads.
Innovation Solution
A method is introduced where the UE allocates transmit power to uplink transmissions based on predefined priorities, with normal SRS transmissions prioritized over positioning SRS transmissions, and dynamic power allocation rules based on received information, ensuring efficient power management across multiple carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE transmits multiple uplink signals simultaneously (normal SRS and positioning SRS), then the communication capacity and positioning capability are improved, but the total transmit power may exceed the maximum transmit power limit
Solution Approach 1:
The patent segments the uplink transmissions into different categories (normal SRS, positioning SRS, and other UL signals) and applies different power allocation strategies to each segment based on their priorities and power consumption characteristics, allowing the UE to manage total power within limits while maintaining communication capacity
Solution Approach 2:
The patent dynamically adjusts the transmit power parameter for different uplink signals based on predefined priorities and received information. The UE changes power allocation parameters to ensure that high-priority signals receive sufficient power while the total power does not exceed the maximum limit
2Ease of operation
If the UE allocates power based on predefined priorities (normal SRS prioritized over positioning SRS), then the power management is simplified and normal communication is ensured, but the positioning accuracy may be compromised when power is limited
Solution Approach 1:
The patent introduces dynamic power allocation mechanisms where the UE can switch between predefined priority-based allocation and received-information-based allocation. The system dynamically adjusts power distribution based on real-time conditions, allowing positioning accuracy to be maintained when needed while falling back to simplified management when power is constrained
Solution Approach 2:
The patent implements feedback mechanisms where the UE receives information from the network about power allocation preferences. This feedback allows the UE to adjust power allocation strategies dynamically, balancing the trade-off between simplified management and positioning accuracy based on actual system conditions
3Productivity
If the UE uses received information to dynamically allocate power (second priority), then the power allocation is optimized and adaptive, but the device complexity increases due to additional processing requirements
Solution Approach 1:
The patent applies partial action by implementing dynamic power allocation only when necessary (when received information is available and processing complexity justifies the benefit). The UE can choose to use simplified predefined priorities when dynamic allocation would add unnecessary complexity, applying the more complex approach only when it provides significant power allocation efficiency improvements
Data Source
AI summary
Various embodiments relate to a next generation wireless communication system for supporting a higher data transfer rate and the like beyond the 4th generation (4G) wireless communication system. According to various embodiments, a device operating in a wireless communication system and an operation method therefor may be provided, and various other embodiments may also be provided.