Backscatter IoT Attachment via Polling Signal Measurement
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Solution Overview
Problem
Existing 3GPP technologies face challenges in supporting battery-less or low-energy-capability IoT devices due to the need for continuous connectivity and mobility handling, as these devices lack the ability to detect timing reference signals and measure signal strength, leading to complex and inefficient attachment procedures.
Innovation Solution
The solution involves a first apparatus receiving a polling signal from a second apparatus, enabling communication through backscattering, determining a query occasion, and initiating an attachment procedure based on signal strength measurement and polling cycle, allowing proactive attachment to maintain network connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous connectivity is required for mobility handling in existing 3GPP technologies, then network coverage and reliability are improved, but device complexity and energy consumption increase significantly for battery-less AIoT devices
Solution Approach 1:
The patent implements periodic polling cycles where the network side actively queries AIoT devices at predetermined intervals. Instead of requiring continuous device-side connectivity monitoring and attachment procedures, the network initiates periodic polling signals to maintain connectivity, significantly reducing device complexity while ensuring reliable network coverage for battery-less AIoT devices
2Use of energy by moving object
If battery-less AIoT devices are used to reduce energy consumption, then device portability and deployment flexibility are improved, but the ability to detect timing reference signals and measure signal strength is lost
Solution Approach 1:
The patent inverts the traditional measurement approach by having the network side (second apparatus) perform signal strength measurements and timing reference detections instead of the AIoT device. The network apparatus measures the backscattered signals from AIoT devices to determine attachment suitability, enabling battery-less devices to maintain energy efficiency while the network compensates for the lost measurement capability through active sensing
3Extent of automation
If traditional attachment procedures are used for AIoT devices, then network management control is improved, but signaling overhead and procedure complexity increase
Solution Approach 1:
The patent extracts the measurement and decision-making functions from the device-side attachment procedure and relocates them to the network side. The network apparatus extracts signal strength information from backscattered polling responses, performs attachment suitability assessments, and makes attachment decisions centrally, significantly reducing the signaling overhead and procedure complexity while maintaining network management control
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
This approach reduces complexity and signaling overhead by enabling AIoT devices to proactively measure signal strength and attach to the best activator, ensuring timely connectivity without the need for continuous monitoring, suitable for high-end use cases like agriculture and livestock monitoring.
Implementation Method 1
the first apparatus enables a communication with the second apparatus by backscattering mechanism
Data Source
AI summary
Embodiments of the present disclosure relate to apparatuses, methods, devices and computer readable storage medium for device measurement based mobility handling in ambient internet of things. The method including at a first apparatus, the first apparatus receives, from a second apparatus, a polling signal at least indicating an identifier of the second apparatus and a period of a polling cycle of the polling signal, wherein the first apparatus enables a communication with the second apparatus by backscattering mechanism; the first apparatus determines a query occasion for a backscattering communication; and the first apparatus initiates, according to the identifier of the second apparatus, an attachment procedure to the second apparatus based on at least one of: a signal strength measurement on the polling signal, or the query occasion of the backscattering communication.