Bluetooth Low Energy Advertising for Position Determination
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Solution Overview
Problem
Current techniques for determining distance using field intensity of communication, such as those discussed in Japanese Patent Application Laid-Open No. 2017-037427, lack accuracy in identifying positions between information processing apparatuses and communication apparatuses.
Innovation Solution
An apparatus configured to perform communication by transmitting advertising information, including information about usage type, utilizing Bluetooth Low Energy standards for more precise position determination through Angle of Arrival (AoA) or Angle of Departure (AoD) methods, enabling accurate relative positional relationships between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distance is determined using field intensity of communication, then position identification is enabled, but accuracy is insufficient
Solution Approach 1:
The patent segments the advertising information into multiple components, including usage type information, to provide more data points for position determination. This segmentation allows the system to use diverse information elements (usage type, field intensity, etc.) collectively to improve measurement precision beyond what single-parameter methods achieve.
2Measurement precision
If advertising information includes usage type information, then position determination accuracy improves, but communication data volume increases
Solution Approach 1:
The patent applies local quality by selectively adding usage type information to advertising packets based on specific conditions and contexts. Rather than universally increasing data volume, the system strategically includes additional information elements where they provide marginal gains in position determination accuracy, optimizing the balance between data volume and measurement precision.
3Measurement precision
If Bluetooth Low Energy with AoA/AoD methods is used, then position determination accuracy reaches several centimeters, but device complexity increases
Solution Approach 1:
The patent leverages the universality of Bluetooth Low Energy technology, which already supports multiple functions including advertising, connection, and position determination via AoA/AoD. By utilizing an existing multi-functional communication standard rather than implementing a dedicated position determination system, the patent achieves high accuracy while avoiding the device complexity that would arise from separate specialized hardware.
Data Source
AI summary
An apparatus configured to perform communication includes a communication unit configured to transmit advertising information, and an obtaining unit configured to obtain information about a usage type of the apparatus. The communication unit is configured to transmit advertising information including the obtained information about the usage type.