UE Power Amplifier Switching Using Characterized Uplink Thresholds
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Solution Overview
Problem
Existing user equipment (UE) systems face inefficiencies in selecting the appropriate power amplifier for data transmission, leading to suboptimal power consumption and signal transmission performance based on varying transmission conditions.
Innovation Solution
A UE is equipped with characterization data that associates transmission parameters with thresholds to select between peak performance and efficient power amplifiers, using a look-up table generated from offline device characterization, optimizing power consumption and signal transmission based on proximity to the base station and power output requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power amplifier is used for all transmission conditions, then device complexity is reduced, but power consumption efficiency deteriorates
Solution Approach 1:
The system dynamically selects between different power amplifiers based on real-time transmission conditions. The power amplifier selection is not fixed but adapts to varying operational requirements, allowing the UE to switch between PAs optimized for different power output ranges and efficiency characteristics depending on the current transmission scenario.
Solution Approach 2:
The system changes operational parameters by selecting different power amplifiers based on transmission power requirements and efficiency thresholds. The characterization data stored in memory contains threshold values that trigger switching between PAs, effectively changing the system's operational state to optimize for either power output or energy efficiency based on current conditions.
2Use of energy by moving object
If multiple power amplifiers are used with selection based on transmission conditions, then power consumption efficiency is improved, but device complexity increases
Solution Approach 1:
The system performs preliminary characterization of multiple power amplifiers before actual operation. Transmission power measurements and efficiency threshold values are pre-determined and stored in memory during device characterization. This advance preparation eliminates the need for complex real-time analysis, as the UE simply compares current transmission requirements against pre-stored threshold values to make selection decisions.
Solution Approach 2:
The system introduces an intermediary layer in the form of characterization data stored in memory. This data acts as a lookup table containing pre-calculated threshold values that mediate between transmission requirements and power amplifier selection. Instead of directly analyzing complex amplifier characteristics in real-time, the system uses this intermediary data structure to simplify the selection process.
3Reliability
If peak performance power amplifier is always used, then signal transmission performance is improved, but power consumption increases
Solution Approach 1:
The system applies different power amplifiers for different operational conditions rather than using a single amplifier for all scenarios. Each power amplifier is selected based on local transmission requirements, such as whether the UE is in proximity to the base station or at a distance, and whether high power output or energy efficiency is the priority. This localized optimization ensures peak performance is used only when necessary.
Solution Approach 2:
The system uses peak performance power amplifiers partially, only when transmission conditions require maximum power output. For normal operating conditions where high performance is not critical, more energy-efficient power amplifiers are selected. This partial use of peak performance capabilities avoids unnecessary power consumption while maintaining adequate signal transmission performance for the majority of operational scenarios.
4Use of energy by moving object
If efficient power amplifier is always used, then power consumption is reduced, but signal transmission performance deteriorates
Solution Approach 1:
The system dynamically switches between efficient and peak performance power amplifiers based on real-time transmission conditions. When the UE determines that transmission power exceeds a stored threshold or when operating in conditions requiring maximum signal strength, it switches to the peak performance amplifier. This dynamic adaptation ensures that power consumption is minimized during normal operation while signal transmission performance is maintained when critical.
Data Source
AI summary
The present application relates to selecting a power amplifier from among a plurality of power amplifiers of a user equipment (UE) for use in transmitting data via an antenna of the UE to a base station. In an example, the UE stores characterization data that indicates the selection of the power amplifier given a requested power output for the uplink transmission and a set of transmission parameters. This set can include any or a combination of the antenna, a radio access technology, a frequency band, and/or a frequency bandwidth. The characterization data can be generated according to an offline characterization process and can be stored as a look-up table in a memory of the UE.