18271520. POSITION ESTIMATION SYSTEM, POSITION ESTIMATION METHOD, WIRELESS DEVICE AND ANALYSIS DEVICE simplified abstract (NIPPON TELEGRAPH AND TELEPHONE CORPORATION)

POSITION ESTIMATION SYSTEM, POSITION ESTIMATION METHOD, WIRELESS DEVICE AND ANALYSIS DEVICE

Organization Name

NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor(s)

Shinya Tamaki of Musashino-shi, Tokyo (JP)

Ryota Shiina of Musashino-shi, Tokyo (JP)

Tetsuya Suzuki of Musashino-shi, Tokyo (JP)

Yasutaka Kimura of Musashino-shi, Tokyo (JP)

Tomohiro Taniguchi of Musashino-shi, Tokyo (JP)

Sei Kou of Musashino-shi, Tokyo (JP)

Tomoya Hatano of Musashino-shi, Tokyo (JP)

Takashi Yamada of Musashino-shi, Tokyo (JP)

POSITION ESTIMATION SYSTEM, POSITION ESTIMATION METHOD, WIRELESS DEVICE AND ANALYSIS DEVICE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18271520 titled 'POSITION ESTIMATION SYSTEM, POSITION ESTIMATION METHOD, WIRELESS DEVICE AND ANALYSIS DEVICE

Simplified Explanation

The present invention relates to a position estimation system that can determine the positions of multiple wireless devices without the need for external devices like fixed beacons or GPS.

• The system includes multiple wireless devices and an analysis device.
• Wireless devices send beacon signals, transfer them to other devices within range, update transfer histories, and discard their own sent signals upon reception.
• One device collects the beacon signals, and the analysis device analyzes the flags to estimate the positions of all wireless devices.

1. 1. 1. Potential Applications

• Indoor positioning systems
• Asset tracking in warehouses or factories
• Location-based services in large venues like shopping malls or airports

1. 1. 1. Problems Solved

• Eliminates the need for expensive external positioning devices
• Provides accurate position estimation without relying on GPS signals
• Enables real-time tracking of multiple devices in indoor environments

1. 1. 1. Benefits

• Cost-effective solution for position estimation
• Improved accuracy in indoor environments where GPS signals may be weak or unavailable
• Real-time tracking and monitoring of assets or people without the need for manual intervention

Original Abstract Submitted

An object of the present invention is to provide a position estimation system capable of grasping position information of a plurality of wireless devices without using an external device such as a fixed beacon or a GPS, a position estimation method, a wireless device, and an analysis device. A position estimation system according to the present invention includes a plurality of wireless devices and an analysis device , wherein the wireless devices are each configured to: send beacon signals; transfer the beacon signals between the wireless devices in a range that the beacon signals reach; update flags indicating transfer histories of the beacon signals at the time of transfer; and discard beacon signals sent by own wireless devices upon reception thereof. Any one of the wireless devices is configured to collect the beacon signals, and the analysis device analyzes the flags of the respective beacon signals collected by the wireless device -, to estimate positions of the plurality of wireless devices