UWB Ranging Control via BLE Advertising Packet Detection
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Solution Overview
Problem
There is a demand for a mechanism that enables easy use of the ranging function by Ultra-Wide Band (UWB) communication to acquire highly accurate distance information, particularly for devices equipped with UWB communication functions, as existing methods like BLE communication may not provide sufficient accuracy.
Innovation Solution
An information processing apparatus is designed to receive advertising packets from nearby devices, and upon detecting a device supporting UWB communication, it displays a list screen allowing users to select and instruct ranging using UWB communication for more accurate distance measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If BLE communication is used for distance measurement, then the system is simple and widely compatible, but the measurement precision is insufficient
Solution Approach 1:
The patent uses BLE communication as an intermediary to detect UWB capability and initiate ranging, while UWB serves as the mediator for high-precision distance measurement. The control unit acts as an intermediary that coordinates between the two communication systems, switching from BLE's simple discovery to UWB's precise ranging when UWB capability is detected.
2Measurement precision
If UWB ranging function is added to all devices, then the measurement precision improves, but the device complexity and cost increase
Solution Approach 1:
The patent implements dynamic capability detection and adaptive ranging mode selection. The system dynamically switches between BLE-only mode and UWB-assisted mode based on real-time detection of UWB capability in cooperating devices, ensuring broad compatibility while enabling high-precision ranging when available.
Solution Approach 2:
The patent changes the communication parameter from BLE to UWB based on detected device capabilities. The control unit modifies the ranging approach by detecting UWB capability through advertising packets and switching to UWB communication when available, thereby adapting the measurement precision parameter to the highest achievable level for each device pair.
3Ease of operation
If automatic UWB ranging is implemented, then the ease of operation improves, but the energy consumption increases
Solution Approach 1:
The patent performs preliminary capability detection through BLE advertising packet analysis before initiating UWB ranging. By pre-detecting UWB capability and user intent through the list screen interaction, the system avoids unnecessary UWB activation, thereby reducing energy consumption while maintaining ease of operation when ranging is actually needed.
Data Source
AI summary
An information processing apparatus that executes predetermined processing in cooperation with a cooperation target apparatus. A mobile terminal receives an advertising packet transmitted by BLE communication and displays a device list screen for prompting a user to select the cooperation target apparatus on a display thereof based on the advertising packet. In a case where a transmission source of the advertising packet is an apparatus supporting UWB communication which makes it possible to acquire distance information with higher accuracy than BLE communication, the device list screen including an object for instructing ranging between the mobile terminal and the transmission source by UWB communication is displayed on the display of the mobile terminal.