Mobile Device Location Accuracy via Proximity Detection

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Solution Overview

Problem

Current location detection methods for mobile communication devices, such as network-based triangulation and GPS, lack accuracy and efficiency in collecting and reporting location data for a high volume of devices, especially in crowd sensing applications.

Innovation Solution

Equipping mobile communication devices with location-tracking and presence-sensing capabilities, using GPS for accurate self-location determination and short-range radio signals like Bluetooth, NFC, and WiFi to detect and report the locations of nearby devices, enabling simultaneous collection and reporting of location data with high accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If network-based triangulation is used to determine location, then a high volume of mobile communication devices can be located, but location accuracy deteriorates to 100+ meters

Engineering Contradiction:
Improvevolume of devices locatedVSAvoidlocation accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent combines network-based location determination with device-to-device proximity detection. Each mobile device determines its own location using network-based methods while simultaneously detecting nearby devices through short-range radio signals. This merging allows the system to maintain high volume processing capability while improving accuracy through multiple detection mechanisms working together.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces an intermediary approach where mobile devices themselves participate in the location detection process by detecting presence of nearby devices through short-range radio signals. This intermediary mechanism (device-to-device detection) supplements the traditional network-based approach, enabling improved accuracy without sacrificing the ability to handle high volumes of devices.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If GPS is used by each mobile device to determine location, then location accuracy improves to approximately 10 meters, but the complexity and resource consumption increase

Engineering Contradiction:
Improvelocation accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies partial action by having each mobile device perform only the necessary location determination functions rather than requiring full GPS functionality on all devices. Devices use their existing location capabilities combined with simple proximity detection mechanisms, avoiding the excessive complexity of implementing complete GPS systems on every device while still achieving high accuracy.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The patent implements self-service by enabling each mobile device to autonomously determine its own location and detect nearby devices without requiring centralized coordination or complex system infrastructure. Each device uses its own resources (location services, radio signal detectors) to perform the detection function, reducing overall system complexity while maintaining high accuracy.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If device-to-device proximity detection is implemented, then location accuracy improves, but the quantity of devices that can be simultaneously tracked decreases

Engineering Contradiction:
Improvelocation accuracyVSAvoidnumber of devices tracked
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent segments the location detection task into two parts: (1) network-based location determination for each device, and (2) device-to-device proximity detection for nearby devices. This segmentation allows the system to handle large numbers of devices through network-based methods while simultaneously providing high accuracy through localized device-to-device detection for nearby devices.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by providing high-accuracy location determination through device-to-device detection only for nearby devices within proximity, while using less resource-intensive network-based methods for all devices. This localized approach to high-precision detection maintains the ability to track large numbers of devices while improving accuracy where most needed (for nearby devices).

Inventive Principle:
Principle #3Local quality

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 allows for accurate and efficient collection and reporting of location data for a large number of devices, improving accuracy from 100+ meters to approximately 10 meters, and enables effective analytics for crowd size estimation and traffic flow analysis.

Implementation Method 1

determining a location of the first mobile communication device

Methodology Applied
Scientific EffectGPS:

Implementation Method 2

detecting presence of a second mobile communication device located within a proximity of the first mobile communication device

Methodology Applied
Scientific EffectElectromagnetic radiation:

Data Source

PatentUS10743281B2Methods, devices, and computer readable storage devices for collecting and reporting location data with a high accuracy
Publication Date: 2020.08.11 AT&T MOBILITY II LLC
  • US10743281B2 patent drawing
  • US10743281B2 patent drawing
  • US10743281B2 patent drawing

AI summary

A mobile communication device collects and reports location data associated with itself and with mobile communication devices within a proximity. The mobile communication device determines its location and detects the presence of another communication device located within the proximity of the mobile communication device. The mobile communication device determines a location of the other mobile communication device. The mobile communication device reports its location and the location of the other mobile communication device.