Ambient AIoT Carrier Wave Power Control with Dynamic Guard Bands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ambient-powered IoT devices, such as AIoT devices, face challenges with limited energy storage and interference issues affecting carrier wave transmission power, leading to weak signals and communication disruptions.
Innovation Solution
A network entity configures emitter nodes to adjust carrier wave transmission power based on interference levels and energy harvesting capabilities, using backscatter transmissions for feedback, and employs guard bands to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carrier wave transmission power is increased to improve signal strength for AIoT devices, then communication reliability is improved, but interference with other frequency bands increases
Solution Approach 1:
The patent introduces an intermediary mechanism (guard band configuration and power adjustment signaling) between the carrier wave transmission and adjacent frequency bands. The network entity configures guard bands as buffer zones and uses signaling to coordinate power adjustments, preventing direct interference while maintaining communication reliability.
Solution Approach 2:
The patent dynamically adjusts transmission power parameters based on interference conditions. The network entity monitors interference levels and modifies carrier wave power parameters in real-time, changing the power level from a fixed value to a dynamically adjusted parameter that adapts to environmental conditions.
2Productivity
If transmission power is adjusted dynamically to optimize communication, then communication efficiency is improved, but device complexity increases due to additional configuration and feedback mechanisms
Solution Approach 1:
The patent implements a feedback mechanism where AIoT devices report received signal power and interference levels to the network entity. This feedback loop enables dynamic power adjustment without requiring complex local decision-making at the device level, centralizing the complexity in the network entity.
Solution Approach 2:
The patent uses existing communication signaling infrastructure for multiple purposes: the same signaling mechanisms used for regular communication are also employed for power adjustment configurations and feedback. This multi-functionality reduces overall system complexity by reusing established protocols rather than introducing dedicated new mechanisms.
3Object-generated harmful factors
If guard bands are expanded to reduce interference, then interference mitigation is improved, but frequency resource utilization decreases
Solution Approach 1:
The patent makes guard band configuration dynamic rather than static. The network entity adjusts guard band widths based on real-time interference conditions, expanding them when interference is detected and contracting them when conditions are favorable, optimizing both interference mitigation and resource utilization.
Solution Approach 2:
The patent applies guard bands selectively rather than uniformly across all transmissions. Guard bands are expanded only in specific frequency bands or time periods where interference is detected, rather than applying excessive guard bands universally, thus preserving frequency resource utilization in unaffected bands.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances communication reliability and efficiency of AIoT devices by optimizing carrier wave power levels, mitigating interference, and ensuring consistent energy supply.
Implementation Method 1
These restricted devices may store energy by harvesting energy from the environment of the IoT device, such as via radio waves
Implementation Method 2
receive, from the IoT device, via a backscatter transmission, the information for adjusting the transmission power
Data Source
AI summary
Various aspects of the present disclosure relate to employing emitter nodes to excite Internet of Things (IoT) devices, such as ambient-powered IoT devices. For example, a base station may configure an emitter node, such as a user equipment (UE), and/or an AIoT device to implement adjustments of a carrier wave transmission power during excitation of the AIoT device by the emitter node.