UE Uplink Modulation Mode Switching Based on Power Conditions
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Solution Overview
Problem
5G telecommunications networks face challenges in efficiently switching to higher order modulation modes like 256QAM due to susceptibility to noise margin and power constraints, which can degrade transmission signals and reduce battery life, despite equipment capabilities supporting higher data rates.
Innovation Solution
User equipment (UE) in 5G networks dynamically switches to a higher order modulation mode like 256QAM only when current transmit power and battery levels meet predetermined thresholds, ensuring sufficient power margin and battery life to maintain communication, using a monitor circuit to assess conditions and send confirmation to the base station for mode change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher order modulation mode (256QAM) is used, then data rate and bandwidth efficiency are improved, but noise margin decreases making the system more susceptible to noise
Solution Approach 1:
The patent implements dynamic modulation mode switching that adapts to real-time channel conditions. The UE and base station continuously assess channel quality indicators and transmit power levels, switching between modulation orders (e.g., 256QAM, 64QAM, 16QAM, QPSK) based on current conditions. This dynamic adaptation allows the system to exploit higher order modulation when conditions permit while falling back to more robust lower order modulation when noise or interference increases, thus resolving the contradiction between achieving high data rates and maintaining noise margin.
2Productivity
If higher order modulation mode (256QAM) is used, then bandwidth efficiency is improved, but transmit power requirements increase which may exceed maximum power limits
Solution Approach 1:
The system dynamically adjusts modulation order based on real-time transmit power level assessments. When the UE determines that current transmit power is sufficient to support higher order modulation without exceeding maximum power limits, it switches to modes like 256QAM for improved bandwidth efficiency. When power constraints are detected, the system transitions to lower order modulation modes that have lower peak-to-average power ratios and reduced power requirements, thus resolving the contradiction between bandwidth efficiency and power consumption.
Solution Approach 2:
The patent changes the modulation order parameter based on power conditions. By adjusting this key parameter according to available power headroom and maximum power constraints, the system optimizes the trade-off between bandwidth efficiency and power consumption. Higher modulation orders are selected when power availability is sufficient, while lower modulation orders are selected when power constraints are tight, dynamically optimizing system performance.
3Productivity
If higher order modulation mode (256QAM) is used, then data transmission efficiency is improved, but battery power consumption increases reducing battery life
Solution Approach 1:
The UE implements dynamic modulation mode selection that considers battery power status alongside channel conditions. When battery power levels are sufficient and charging status indicates availability, the system can afford to use higher order modulation modes like 256QAM for improved data transmission efficiency. When battery power is low or the device is in power-saving mode, the system switches to lower order modulation modes that consume less processing power and energy, thus resolving the contradiction between transmission efficiency and battery power consumption.
Data Source
AI summary
An apparatus, method, and system disclosed herein are directed to a user equipment (UE) capable of switching an uplink modulation mode to a higher order modulation mode based on communication, or link, conditions and a condition associated with the UE. The UE, in response to receiving a request to change a current uplink modulation mode to a new modulation mode having a higher order modulation, may determine whether a current condition associated with the UE meets a predetermined condition. In response to determining that the current condition, including a current transmit power level and a current battery power level, meets the predetermined condition, the UE may generate a confirmation indicating that the current condition meets the predetermined condition, send the confirmation, and change the uplink modulation mode to the new modulation mode.