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Method to Position Mobile User's Indoor Locations Without User Participations and System Training

IP.com Disclosure Number: IPCOM000243684D
Publication Date: 2015-Oct-09
Document File: 2 page(s) / 166K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method to position mobile users' indoor locations without user participations. The method includes smartphones with Wi-Fi interfaces enabled periodically to send out messages even when they are not associated with any Wi-Fi access points (APs).

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Method to Position Mobile User's Indoor Locations Without User Participations and System Training

Indoor localization is a hot area because it is essential for many mobile applications, such as targeted advertising (for sending real-time advertisement based on customers' locations, disaster escaping (for guiding firefighters safely leaving collapsed buildings), indoor navigation (for guiding customers towards a shop in a big mall). The current positioning technologies normally require user cooperation. For example, most indoor localization systems require users to install and start their apps on their phones. For many application scenarios such as advertisement, users may not be willing to cooperate due to concerns of energy/data consumption of their devices, privacy, and etc. Therefore, it is necessary to define a method to position mobile users' indoor locations without user participation.

Current solution may be comprised of two major parts. On the client side, a mobile device sends request for localization, and an application/service on the device captures the signal strengths of the access points around the device. Also, an application/service on the device sends the signal strength data to the cloud. On the server side, the server computes the location and returns it back to the device. Clearly, challenges are how and when to send requests from client and then how to handle those requests in server side. To solve those challenges, a proposed solution is to use the information extracted from Wi-Fi access points (APs) alone to track the positions of indoor mobile users for different location-based services. Since there is no need application/service on the mobile device, exiting access points captures the signal strengths of opportunistic data from the devices that can be used to determine the device location with the device unaware (unconsciously).

Figure 1 below illustrates positioning algorithm in high level. In Figure 1, smartphones wit...