Ambient IoT Backscatter Amplifier Switching for Reliable Response Signals
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing ambient Internet of Things (IoT) devices, particularly in determining optimal transmission modes and amplifier gain settings for response signals, which affects communication efficiency and reliability.
Innovation Solution
The apparatus and method enable ambient IoT devices to transmit response signals by backscattering activation signals with or without amplification, and adjust amplifier gain based on received requests, utilizing energy storage and modulators to optimize transmission modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ambient IoT devices transmit response signals by backscattering activation signals with amplification, then signal quality and communication reliability are improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic switching between two transmission modes: backscattering without amplification (low power) and backscattering with amplification (high reliability). The device can adaptively select the appropriate mode based on communication requirements, resolving the contradiction between power consumption and communication reliability by making the amplification capability dynamic rather than static.
Solution Approach 2:
The patent changes the amplification parameter of the backscattering transmission. By controlling the amplifier gain parameter, the system can adjust between low-power mode (gain = 0 or amplifier off) and high-reliability mode (amplifier on with appropriate gain), allowing flexible adaptation to different communication scenarios.
2Adaptability or versatility
If ambient IoT devices support multiple transmission modes, then adaptability and communication efficiency are improved, but device complexity increases
Solution Approach 1:
The patent makes the ambient IoT device multi-functional by incorporating both backscattering transmission capability and amplified transmission capability within a single device architecture. The same hardware components (antenna, backscatter module, amplifier) serve multiple functions depending on configuration, enabling the device to adapt to different transmission requirements without requiring separate specialized devices.
Solution Approach 2:
The patent introduces a mode indication mechanism as an intermediary that manages the complexity of multiple transmission modes. The mode indication information exchanged between devices allows them to coordinate which transmission mode to use, simplifying the control logic while maintaining support for multiple modes. This intermediary signaling approach manages complexity through standardized protocols rather than complex internal decision-making.
3Power
If amplifier gain is increased to improve signal quality, then response signal strength is improved, but power consumption and potential interference increase
Solution Approach 1:
The patent implements feedback mechanisms where devices exchange mode indication information and capability information about amplifier gain ranges. This feedback allows transmitting devices to adjust their amplifier gain appropriately based on received signal conditions, ensuring sufficient signal strength while avoiding excessive gain that would cause interference. The feedback loop enables dynamic optimization of signal strength versus interference trade-off.
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 efficiency and reliability by allowing ambient IoT devices to adapt transmission modes and amplifier settings, improving signal quality and reducing power consumption.
Implementation Method 1
a first transmission mode wherein the response signal is transmitted by backscattering the activation signal without amplification
Implementation Method 2
a second transmission mode wherein the response signal is transmitted by backscattering the activation signal with amplification
Data Source
AI summary
The disclosure relates to an apparatus comprising: an energy storage; an antenna; a modulator connected to the antenna; an amplifier; means for selectively connecting the amplifier to the energy storage or disconnecting the amplifier from the energy storage; and means for selectively connecting the modulator to the amplifier or disconnecting the modulator from the amplifier.