Dynamic Transmit Diversity Control for Propagation Variability
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Solution Overview
Problem
Wireless transmit diversity systems face challenges in adapting to dynamic propagation conditions, such as those caused by mobile terminals or varying environmental factors, leading to suboptimal performance in terms of signal quality, power efficiency, and data throughput.
Innovation Solution
A method and apparatus for dynamically adapting transmit diversity parameters, including phase and power adjustments, based on detected mobility parameters that reflect changes in propagation conditions, allowing for faster adaptation and improved performance in dynamic environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transmit diversity control parameters are changed frequently to adapt to dynamic propagation conditions, then the system can track propagation variability better, but the stability of operation deteriorates and power consumption increases
Solution Approach 1:
The patent implements dynamic adaptation of transmit diversity parameters based on detected propagation variability. The system transitions from static parameter settings to dynamic adjustment, where parameters are modified in real-time according to detected mobility parameters and propagation conditions, allowing the system to adapt optimally without excessive changes
Solution Approach 2:
The patent changes the state of transmit diversity control parameters based on detected propagation variability. By monitoring mobility parameters and adjusting parameters only when necessary (when variability exceeds thresholds), the system achieves adaptability while maintaining stability during stable propagation conditions
2Productivity
If transmit diversity parameters are adapted dynamically to track propagation variability, then system throughput improves, but the complexity of the control algorithm increases
Solution Approach 1:
The patent applies different levels of parameter adaptation based on local propagation conditions. Rather than uniformly complex processing everywhere, the system detects local variability and applies sophisticated adaptation only where needed, keeping the control algorithm simpler in stable regions while maintaining high throughput in dynamic regions
3Speed
If the rate of change of transmit diversity parameters is increased to adapt faster to varying propagation conditions, then the response time improves, but the loss of energy increases
Solution Approach 1:
The patent implements periodic detection of propagation variability followed by parameter adjustment only when necessary. By using periodic monitoring with threshold-based triggering, the system achieves fast response when conditions change while avoiding continuous parameter changes that would waste energy during stable propagation periods
Data Source
AI summary
A method and apparatus for dynamic adaptation of transmit diversity parameters according to detected dynamics that may be, for example, related to changes in actual propagation and network conditions, and may be referred to as mobility parameters. Mobility parameters may apply to variability in a propagation path due to any conditions. Determination of a mobility parameter may be conducted using one or more of multiple parameters available to the mobile terminal.