Multi-Radio Power Allocation for RF Exposure and Uplink Efficiency
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Solution Overview
Problem
Maintaining RF exposure compliance is challenging for wireless devices with multiple radios due to regulatory constraints like SAR and MPE, especially in scenarios involving dual connectivity, carrier aggregation, and multi-SIM, which can reduce uplink throughput when energy inefficient links are involved.
Innovation Solution
Dynamic allocation of transmit power across multiple wireless communication connections based on relative energy efficiency, ensuring compliance with regulatory constraints while optimizing uplink throughput by prioritizing more energy-efficient connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmit power is increased to maintain uplink throughput, then communication performance is improved, but RF exposure compliance becomes difficult to maintain
Solution Approach 1:
The patent dynamically adjusts transmit power parameters across multiple radios based on real-time energy efficiency measurements and RF exposure conditions. By changing power parameters adaptively rather than using fixed allocations, the system maintains uplink throughput while complying with SAR and MPE limits.
Solution Approach 2:
The system implements dynamic power allocation that continuously monitors energy efficiency of different wireless connections and adjusts transmit power in real-time. This dynamic approach allows the system to respond to changing channel conditions and RF exposure requirements, optimizing throughput while maintaining compliance.
2Reliability
If energy is allocated to energy inefficient connections, then connection reliability is maintained, but overall system productivity decreases
Solution Approach 1:
The patent changes the power allocation parameters based on measured energy efficiency metrics. Connections with poor energy efficiency receive reduced power allocation, while more efficient connections receive increased power, thereby optimizing overall system productivity while maintaining necessary connection reliability.
Solution Approach 2:
The system implements a feedback mechanism that measures energy efficiency of each wireless connection and uses this information to adjust power allocation. This closed-loop control ensures that power is distributed optimally across connections based on their actual performance characteristics.
3Adaptability or versatility
If multiple radios operate simultaneously, then communication versatility is improved, but energy consumption increases
Solution Approach 1:
The patent applies different power allocation strategies to different radios based on their individual energy efficiency characteristics. Rather than uniform power distribution, each radio receives power allocation tailored to its specific channel conditions and efficiency metrics, optimizing overall energy utilization while maintaining multi-radio versatility.
Solution Approach 2:
The system allocates power partially to multiple radios based on their relative energy efficiency, rather than providing full power to all connections simultaneously. This selective power allocation maintains communication versatility while reducing total energy consumption by focusing resources on the most efficient connections.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for transmit energy allocation. A method that may be performed by a wireless device includes establishing first and second wireless communication connections and allocating an available energy between the first and second wireless communication connections by: allocating a first portion of the available energy to the first wireless communication connection based at least in part on one or more functionalities associated with the first wireless communication connection; allocating a second portion of the available energy to the second wireless communication connection based at least in part on one or more functionalities associated with the second wireless communication connection; and allocating a third portion of the available energy to the first and/or the second wireless communication connections based at least in part on energy efficiencies of the first and second wireless communication connections.