Local Wireless Proximity Detection for IoT Mobility
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Solution Overview
Problem
Existing methods for determining device proximity rely on GPS, which is energy-intensive, privacy-intrusive, and ineffective indoors, and require centralized servers and network connections, making them unsuitable for IoT devices and efficient mobility profiling.
Innovation Solution
A method that uses wireless network discovery to determine device proximity by recording unique identifiers and timestamps of detected access nodes, allowing devices to compare records and conclude proximity without satellite signals or centralized servers, respecting user privacy and leveraging local processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS is used for device positioning, then positioning accuracy is improved, but energy consumption increases and privacy is compromised
Solution Approach 1:
The patent extracts the positioning function from GPS satellite dependency and implements it using local wireless network infrastructure. Devices discover and track wireless access nodes (WiFi, Bluetooth, cellular towers) to determine relative proximity without requiring satellite signals, thereby eliminating GPS energy consumption while maintaining positioning capability through alternative wireless signals.
Solution Approach 2:
The patent introduces wireless access nodes as intermediary objects that mediate between devices and the positioning system. Instead of direct GPS satellite-to-device communication, devices use discovered access nodes as intermediaries to infer relative proximity, enabling positioning through local wireless infrastructure rather than satellite-based systems.
2Measurement precision
If GPS is used for device positioning, then positioning accuracy is improved, but privacy is compromised
Solution Approach 1:
The patent extracts the positioning function from centralized GPS tracking systems and implements it through decentralized local comparison. Devices independently discover and record wireless access nodes, then compare their own discovery records with received records from other devices, eliminating the need for centralized server processing and reducing privacy exposure.
Solution Approach 2:
The patent implements self-service positioning where each device independently performs discovery, recording, and comparison operations. Devices autonomously determine relative proximity by comparing their own discovery records with received records without requiring external server intervention, thereby maintaining privacy through local processing only.
3Ease of operation
If centralized server-based positioning is used, then positioning services are provided, but device complexity and network dependency increase
Solution Approach 1:
The patent segments the positioning function into independent device-level operations: local discovery of wireless access nodes, local recording of discovery data with timestamps, and local comparison of discovery records. This segmentation eliminates dependency on centralized servers and reduces system complexity by distributing functionality to individual devices.
Solution Approach 2:
The patent implements self-service positioning where each device independently performs all positioning operations including discovery, recording, and comparison. Devices autonomously determine relative proximity without requiring external server infrastructure, thereby simplifying the system architecture and eliminating network dependency while maintaining service availability.
4Measurement precision
If GPS is used for positioning, then outdoor positioning accuracy is improved, but indoor positioning capability is lost
Solution Approach 1:
The patent implements a universal positioning method that functions in both outdoor and indoor environments by using wireless access nodes as discovery targets. The same discovery and comparison mechanism works regardless of location, adapting to available wireless infrastructure (WiFi access points indoors, cellular towers outdoors) without requiring environment-specific modifications.
Data Source
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AI summary
The present invention provides a method for determining the relative proximity of wireless network devices. The method may advantageously be executed locally on a computing device, so that it provides enhanced reliability, responsiveness, security and privacy as compared to known methods requiring Internet access and/or satellite positioning signals. The determination of the proximity of networked devices allows for efficient implementation of several social network services, such as shared mobility services or location-based services, wherein the proximity of users/devices is a key 10 incentive for the service's usage.