Adaptive Transmission Power Control for Wireless Devices
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Solution Overview
Problem
Low-power devices face challenges in communication due to fixed transmission power settings, which can lead to battery life issues and interference with other communication technologies, and existing power control methods are energy and bandwidth intensive.
Innovation Solution
Implementing adaptive transmission power control mechanisms using feedback signals from receiver devices, identification information, and sensor data to adjust transmission power dynamically, including the use of link quality queries and encoded channel status information within acknowledgment frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If fixed transmission power is used, then communication coverage is maintained, but battery life deteriorates and interference increases
Solution Approach 1:
The patent implements dynamic transmission power adjustment by continuously monitoring link quality metrics (such as signal-to-noise ratio and packet error rate) and adapting the transmission power level accordingly. This allows the system to use lower power when channel conditions are good and increase power only when necessary, resolving the contradiction between maintaining communication coverage and reducing power consumption/interference
Solution Approach 2:
The system employs feedback mechanisms where the receiver device sends link quality reports back to the transmitter, which then adjusts its transmission power based on this feedback. This closed-loop control enables the system to optimize power consumption while maintaining reliable communication, directly addressing the battery life and interference issues associated with fixed power transmission
2Use of energy by moving object
If transmission power control techniques are implemented, then power efficiency is improved, but energy and bandwidth overhead increase
Solution Approach 1:
The patent applies partial power control by adjusting transmission power only when link quality metrics indicate a need for adjustment, rather than continuously modifying power levels. This selective approach reduces the energy and bandwidth overhead associated with constant power control signaling while still achieving improved power efficiency when necessary
Solution Approach 2:
The system integrates multiple functions into the power control mechanism, including link quality assessment, power level selection, and transmission scheduling, all within a unified framework. This multi-functionality reduces the overall overhead by combining what would otherwise be separate control processes into a single efficient mechanism
3Duration of action of moving object
If adaptive transmission power control is implemented, then battery life is improved, but communication quality may deteriorate
Solution Approach 1:
The system uses real-time feedback from link quality metrics (signal-to-noise ratio, packet error rate, received signal strength) to guide power adjustment decisions. This feedback ensures that transmission power is increased when communication quality degrades and reduced only when quality remains acceptable, thus extending battery life without compromising communication reliability
Solution Approach 2:
The adaptive power control mechanism dynamically adjusts transmission power based on current channel conditions, transitioning between different power levels in response to changing environmental factors. This dynamic adaptation maintains communication quality by ensuring sufficient power is transmitted when channel conditions are poor while conserving energy when conditions are favorable
Data Source
AI summary
Some aspects of this disclosure include apparatuses and methods for implementing transmission power control. Some aspects relate to an electronic device including a transceiver configured to communicate with a second electronic device and a processor communicatively coupled to the transceiver. The processor is configured to receive an identification information of the second electronic device and receive, from the second electronic device, at least one of a plurality of feedback signals. The plurality of feedback signals includes a first feedback signal generated based on a link quality query from the electronic device and a second feedback signal including an encoded channel status information embedded within an acknowledgment (ACK) frame from the second electronic device. Based on the received identification information and the at least one of the plurality of feedback signals, the processor is configured to adjust transmission power of a signal to be transmitted to the second electronic device.