Activator Transmit Power Configuration for Ambient IoT
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Solution Overview
Problem
Existing technologies for Ambient IoT devices face challenges in optimizing transmit power while minimizing interference and power consumption, especially in scenarios where bidirectional links between activators, devices, and readers are not available.
Innovation Solution
The proposed solution involves determining a first transmit power for a signal from the activator device to arrive at the reader device, and then determining a second transmit power for the response signal from the tag device based on the first transmit power. This configuration is provided to the tag device, allowing it to adjust its transmit power accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmit power is increased to ensure successful data transmission, then reliability of communication is improved, but interference to other devices increases
Solution Approach 1:
The patent applies local quality by configuring different transmit power levels for different devices based on their specific characteristics. The activator device determines a first transmit power for itself, then configures a second transmit power for the tag device based on this first power level. This localized power configuration ensures each device transmits at an appropriate power level for its specific communication needs, achieving reliable transmission while minimizing unnecessary interference.
2Area of stationary object
If transmit power is increased to extend communication range, then coverage area is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamics by making transmit power configurable and adaptable rather than fixed. The activator device dynamically determines the first transmit power based on communication conditions, then configures the tag device with an appropriate second transmit power level. This dynamic power adjustment allows the system to extend coverage area when needed while minimizing power consumption by avoiding consistently high power transmission.
3Productivity
If transmit power is optimized for one device, then communication efficiency is improved, but performance of other devices may deteriorate
Solution Approach 1:
The patent applies feedback by having the activator device determine its first transmit power based on communication conditions, then use this information to configure the tag device's second transmit power. The activator device receives feedback from the tag device and can adjust power configurations accordingly. This feedback mechanism ensures that power optimization for one device does not compromise the performance of other devices in the network.
Data Source
AI summary
There is provided an activator device comprising means for determining a first transmit power for a signal from the activator device to arrive at at least one reader device, determining a second transmit power for a response signal from a tag device to the at least one reader device based at least on the first transmit power and providing, by the activator device to the tag device, a configuration of the second transmit power for the response signal from the tag device to the at least one reader device.