AIoT Reader Selection for Indoor Positioning Thresholds
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently selecting appropriate reader devices for ambient-powered IoT devices, particularly in indoor environments, leading to inaccurate positioning and operational failures due to distance thresholds not being met.
Innovation Solution
A framework for messaging between network entities, reader devices, and IoT devices is introduced to facilitate the discovery and selection of suitable reader devices based on proximity and capabilities, using techniques such as RSSI measurement and distance thresholding to ensure accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reader devices are deployed to provide positioning services for AIoT devices, then positioning capability is improved, but device complexity and operational failures increase due to distance threshold requirements not being met
Solution Approach 1:
The system performs preliminary actions by having reader devices transmit proximity request messages and AIoT devices respond with proximity response messages containing distance information before actual positioning operations. This preliminary exchange of proximity information allows the network to pre-select appropriate reader devices that meet distance threshold requirements, preventing operational failures during actual positioning tasks.
Solution Approach 2:
The system implements feedback mechanisms where AIoT devices provide feedback information about their proximity to reader devices through proximity response messages. This feedback loop allows the network to receive distance measurements, evaluate whether threshold criteria are met, and select suitable reader devices accordingly, thereby improving both positioning accuracy and operational reliability.
2Area of stationary object
If multiple reader devices are deployed for positioning, then positioning coverage is improved, but system complexity increases due to need for device selection and criteria evaluation
Solution Approach 1:
The system segments the reader device selection process into distinct phases: first, reader devices transmit proximity request messages; second, AIoT devices respond with proximity information; third, the network evaluates criteria and selects appropriate readers. This segmentation of the complex selection process into manageable steps reduces overall system complexity while maintaining extensive positioning coverage through multiple reader devices.
Solution Approach 2:
The network acts as an intermediary that mediates between multiple deployed reader devices and AIoT devices. It receives proximity information from AIoT devices, evaluates criteria, and selects appropriate reader devices for positioning tasks. This intermediary function simplifies the system by centralizing the selection logic in the network rather than requiring complex peer-to-peer coordination between readers and devices.
3Measurement precision
If distance threshold criteria are strictly enforced for reader selection, then positioning accuracy is improved, but deployment efficiency decreases due to fewer suitable readers available
Solution Approach 1:
The system applies parameter changes by allowing flexible interpretation of distance threshold criteria. Instead of using fixed, rigid thresholds, the network can adjust proximity requirements based on specific deployment scenarios, AIoT device capabilities, and environmental factors. This flexibility maintains positioning accuracy when needed while improving deployment efficiency by accommodating a broader range of reader device configurations.
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
Enables efficient and reliable deployment and operation of multiple IoT devices by selecting reader devices that meet positioning requirements, enhancing inventory and command procedures.
Implementation Method 1
to determine the proximity of the reader device to the IoT device, the at least one processor is further configured to cause the reader device to measure a received signal strength indicator (RSSI) associated with the second message and determine a distance between the reader device and the IoT device based on the measured RSSI
Data Source
AI summary
Various aspects of the present disclosure relate to selection of reader devices for positioning of ambient Internet of Things (AIoT) devices. For example, the present disclosure introduces messaging between a network, reader devices, and AIoT devices that provides for the discovery and selection of reader devices appropriate for AIoT devices within a certain location (e.g., a target area) such as an indoor facility.