Adaptive Transmit Power Control for Wireless Devices
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Solution Overview
Problem
Conventional transmit power control methods in WLANs are too simplistic and fail to adapt effectively to highly variable network environments, leading to issues such as weak signals or interference due to suboptimal power settings, which can reduce data rates and increase retransmissions.
Innovation Solution
Dynamic adjustments of transmit power based on observed network parameters like throughput and network loading, using feedback loops to continuously optimize power levels and maintain desired performance ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If transmit power is reduced to conserve battery power, then energy consumption is reduced, but signal strength becomes too weak to be received correctly
Solution Approach 1:
The patent implements dynamic transmit power adjustment by continuously monitoring network parameters (throughput, network loading) and adapting power levels in real-time. The system transitions from static power settings to dynamic control, allowing the wireless device to optimize power consumption while maintaining reliable signal reception based on current network conditions.
Solution Approach 2:
The patent employs feedback loops where the wireless device monitors network performance parameters and uses this information to adjust transmit power levels. The system measures throughput and network loading, then feeds this information back to control the transmit power, creating a closed-loop control system that balances energy savings with signal reliability.
2Reliability
If transmit power is increased to ensure correct signal reception, then signal strength is sufficient, but interference problems occur between devices and adjoining systems
Solution Approach 1:
The patent applies local quality by allowing each wireless device to independently adjust its transmit power based on its specific network environment and observed parameters. Instead of uniform power levels across all devices, each device optimizes its power locally according to its throughput requirements and network loading conditions, reducing overall interference while maintaining individual signal quality.
Solution Approach 2:
The patent changes the transmit power parameter dynamically based on monitored network conditions. The system adjusts power levels by modifying this key parameter in response to varying throughput requirements and network loading, thereby maintaining signal reliability while minimizing interference generation.
3Adaptability or versatility
If conventional transmit power control is used, then device complexity is low, but adaptability to variable network conditions is insufficient
Solution Approach 1:
The patent implements self-service by enabling the wireless device to autonomously monitor its own network performance parameters (throughput, network loading) and automatically adjust its transmit power without external intervention. The device serves itself by making intelligent power control decisions based on observed network conditions, enhancing adaptability while keeping the control mechanism relatively simple.
Data Source
AI summary
In a wireless network communications device, transmit power levels may be interactively adjusted to dynamically maintain a desired level of network loading and/or data throughput within the network in a changing network environment.