Mobile Proximity Detection Using Bluetooth Trigger and WiFi Data Transfer
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Solution Overview
Problem
Existing mobile social matching and messaging services face limitations due to proximity detection issues with long-range communications systems and bandwidth constraints of short-range radio frequency technologies, leading to inefficient network resource usage and battery drain.
Innovation Solution
A method utilizing a Wireless Wide Area Network for data transfer, where an Internet-based server coordinates connections between mobile peers, and Bluetooth is used as a trigger for proximity detection, minimizing continuous communication and relying on location-based services for accurate user location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Bluetooth is used for proximity detection, then short-range communication between mobile devices is enabled, but data transfer rate is slow and susceptibility to interference increases
Solution Approach 1:
The system segments the communication function into two distinct parts: proximity detection (using Bluetooth for its reliability in detecting presence) and data transfer (using WiFi for its high speed). This segmentation allows each component to optimize for its specific function without compromise.
Solution Approach 2:
The system merges two different wireless communication technologies (Bluetooth and WiFi) into a unified communication framework. Bluetooth handles the proximity detection trigger while WiFi handles the actual data transfer, combining the strengths of both technologies to resolve their individual limitations.
2Length of stationary object
If long-range communications systems are used for proximity detection, then detection range is extended, but network resource consumption and battery power drain increase
Solution Approach 1:
Instead of continuous long-range communication, the system uses periodic Bluetooth scanning to detect proximity. The Bluetooth device periodically checks for nearby devices and only initiates communication when a match is found, significantly reducing power consumption compared to continuous monitoring.
Solution Approach 2:
The system introduces WiFi as an intermediary for data transfer when Bluetooth detects proximity. This mediator approach allows Bluetooth to handle only the low-power proximity detection function while delegating the high-bandwidth data transfer to WiFi, optimizing overall energy efficiency.
3Reliability
If continuous communication is maintained between mobile devices, then real-time connectivity is achieved, but network resource usage and battery power are excessively consumed
Solution Approach 1:
The system implements periodic communication checks instead of continuous communication. Bluetooth performs periodic proximity checks and only establishes WiFi connection when needed, maintaining reliable connectivity when required while minimizing energy consumption during idle periods.
Solution Approach 2:
The system enables self-service communication by having devices independently perform proximity detection and initiate connections only when mutually beneficial. This eliminates the need for continuous server-mediated communication, reducing network resource usage and power consumption.
Data Source
AI summary
Disclosed is a mobile computing device application or “mobile application” designed to assist users in performing directed searches within defined geographic scope to achieve specific goals within social, ecommerce and collaborative spaces. The Wireless Wide Area Network (WWAN) is used for data transfer. An Internet-based server is responsible for coordinating all connections between mobile peers. Peer matches are pre-qualified by the server based on available location-based service (LBS) data and other criteria. Short-range wireless communication protocols, such as Bluetooth, radio-frequency identification (RFID), Wibree, UWB (ultra-wideband), WUSB (wireless USB) and WLAN (wireless local area network) connection, are used as a trigger to indicate proximity. Thus, contact between users in close proximity is established without the need for continuous communication between the mobile device and the server.