Bluetooth Advertising Position Embedding for Distance Accuracy
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Solution Overview
Problem
Current techniques for determining the distance between an information processing apparatus and a communication apparatus using radio field intensity are limited in accuracy and efficiency, particularly in environments with multiple Bluetooth devices.
Innovation Solution
The apparatus includes a communication unit that transmits advertising information containing position information, utilizing Bluetooth Low Energy standards to detect direction and distance through angle of arrival or departure methods, enabling precise positional determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distance is identified using radio field intensity of advertising information, then distance identification is enabled, but measurement precision is insufficient
Solution Approach 1:
The patent applies preliminary action by acquiring position information in advance and embedding it into advertising information before transmission. This allows receiving devices to obtain accurate position data without performing complex real-time calculations, thereby improving measurement precision while avoiding increased device complexity.
2Measurement precision
If position information is embedded in advertising information, then absolute position identification accuracy is improved, but information transmission volume increases
Solution Approach 1:
The patent extracts only the essential position information from complex location data and embeds it into advertising information. This selective extraction approach maintains absolute position identification accuracy while minimizing the increase in advertising information data size, effectively balancing precision requirements with transmission efficiency.
3Adaptability or versatility
If multiple Bluetooth devices are present in the environment, then communication versatility is enhanced, but distance identification reliability deteriorates
Solution Approach 1:
The patent implements feedback mechanisms where devices continuously transmit and update their position information through advertising channels. This allows receiving devices to filter and identify the most relevant signals from multiple Bluetooth devices, maintaining reliability in complex environments while preserving versatility.
Data Source
AI summary
An apparatus that executes communication includes a communication unit configured to transmit advertising information, and an acquisition unit configured to acquire position information of the apparatus, wherein the communication unit transmits advertising information including the acquired position information.