Linear RF Exposure Computation for Coherent Transmissions
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Solution Overview
Problem
Wireless communication devices face challenges in efficiently ensuring RF exposure compliance for coherent transmissions due to computationally intensive non-linear operations required for time-averaged evaluation, which can consume excessive power and resources, hindering performance and efficiency.
Innovation Solution
Implementing a method that uses a linear computation to determine transmit power limits for RF exposure compliance, scaling these limits to account for non-linear effects of coherent transmissions, thereby avoiding intensive calculations and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-linear operations are used for time-averaged evaluation of RF exposure for coherent transmissions, then RF exposure compliance is ensured, but computational complexity and power consumption increase excessively
Solution Approach 1:
The patent changes the mathematical parameters of the computation from non-linear operations to linear operations. Specifically, it transforms the time-averaged evaluation by using linear summation of transmit powers instead of non-linear computations, while still ensuring RF exposure compliance through adjusted calculation methods that operate on the same input parameters but with simpler mathematical relationships.
Solution Approach 2:
The patent substitutes complex non-linear computational mechanisms with simpler linear computational mechanisms. The non-linear operations required for coherent transmission RF exposure evaluation are replaced with linear operations that achieve the same compliance verification through different mathematical approaches, reducing computational burden while maintaining reliability.
2Reliability
If non-linear operations are used for time-averaged evaluation of RF exposure, then RF exposure compliance is ensured, but power consumption increases excessively
Solution Approach 1:
The patent changes the computational parameters from non-linear to linear operations, which inherently consume less energy. By transforming the mathematical operations used in RF exposure evaluation for coherent transmissions, the system maintains compliance verification while reducing the energy required for computation.
Solution Approach 2:
The patent replaces energy-intensive non-linear computational mechanisms with more efficient linear computational mechanisms. This substitution maintains the ability to verify RF exposure compliance while significantly reducing power consumption associated with the evaluation process.
3Reliability
If extensive certification process is undergone to ensure RF exposure compliance, then compliance is ensured, but time and resources are consumed
Solution Approach 1:
The patent performs preliminary computational adjustments and pre-calculations that simplify the RF exposure evaluation process. By preparing and adjusting transmit power limits in advance using linear operations, the system reduces the time required for certification and compliance verification during actual operation.
Solution Approach 2:
The patent substitutes time-consuming non-linear computational processes with faster linear computational processes. This substitution maintains the thoroughness of RF exposure compliance verification while significantly reducing the time and computational resources required for certification and ongoing compliance checks.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques and apparatus for radio frequency (RF) exposure compliance for coherent transmissions. An example method of wireless communication includes obtaining a first transmit power limit associated with a coherent transmission mode, wherein the first transmit power limit is adjusted by a scaling factor associated with the coherent transmission mode. The method also includes transmitting first signals via a plurality of antennas in the coherent transmission mode at a first transmit power determined based at least in part on the first transmit power limit.