Wireless Device Configuration Adaptation for Hardware Imperfections
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Solution Overview
Problem
In wireless communication networks, hardware imperfections in devices such as power amplifier nonlinearities and oscillator phase noise negatively affect data transmission and reception performance, which existing link adaptation and beamforming techniques fail to adequately address.
Innovation Solution
A method and device that acquire current values of performance-affecting properties like temperature and output power, determine the corresponding performance level, and select an appropriate device configuration, such as modulation scheme or beamforming weights, to ensure successful data transmission or reception, using look-up tables or performance computation functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If link adaptation and beamforming are used to adapt to channel conditions, then data transmission performance is improved, but hardware imperfections such as power amplifier nonlinearities and oscillator phase noise still negatively affect performance
Solution Approach 1:
The patent implements a feedback mechanism where the device continuously monitors its own performance characteristics (such as error vector magnitude) and uses this information to adjust transmission parameters. The device reports actual performance metrics back to the network, enabling dynamic adaptation that compensates for hardware imperfections like power amplifier nonlinearities and oscillator phase noise, thereby maintaining reliable data transmission despite these harmful factors
Solution Approach 2:
The patent changes transmission parameters such as modulation and coding scheme (MCS) based on measured performance characteristics. By monitoring actual device performance and comparing it against target performance thresholds, the system dynamically adjusts parameters like MCS index to compensate for hardware imperfections, ensuring that data transmission maintains required reliability levels despite the presence of harmful hardware effects
2Ease of operation
If device configurations are selected based on general channel quality reports, then transmission is simplified, but performance degradation occurs due to unaccounted hardware imperfections
Solution Approach 1:
The patent enables the device to self-monitor and self-adjust its transmission parameters based on its own measured performance characteristics. Rather than relying solely on network-controlled link adaptation, the device independently evaluates its own performance (e.g., measuring error vector magnitude) and selects appropriate transmission configurations, thereby maintaining reliable operation while simplifying the overall transmission management process
3Device complexity
If fixed device configurations are used, then device complexity is reduced, but adaptability to varying hardware performance and environmental conditions is limited
Solution Approach 1:
The patent transitions from fixed device configurations to dynamic configuration selection. The device continuously monitors its performance characteristics and environmental conditions, then dynamically selects appropriate transmission parameters such as modulation and coding scheme. This dynamic approach maintains low device complexity while significantly improving adaptability to varying hardware performance and environmental conditions, as the system can adjust configurations in real-time based on actual performance measurements
Data Source
AI summary
The present disclosure relates to methods to transmit and/or receive data in a wireless communications network, and a device performing the methods. In an aspect, a method of fora device configured to transmit data in a wireless communications network is provided. The method comprises acquiring a current value of at least one property affecting performance of the data transmission and determining a level of the performance attained with the current value of said at least one property. The method further comprises selecting, based on the determined level of the performance, at least one device configuration of a plurality of different device configurations allowing successful data transmission for the determined level of the performance and performing the data transmission applying the selected at least one device configuration.