Encrypted Positioning Support Data for Indoor Navigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Satellite-based positioning technologies are ineffective indoors due to poor signal penetration through walls and roofs, necessitating alternative solutions for accurate navigation indoors.
Innovation Solution
A method involving encrypted positioning support data sent by a first apparatus, decryptable by a decryption key held by mobile devices, allowing them to determine their position using WLAN-based positioning systems, with a server managing decryption keys and access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If satellite-based positioning technologies are used, then positioning accuracy outdoors is improved, but signal penetration through walls and roofs deteriorates
Solution Approach 1:
The positioning system is segmented into multiple independent components: satellite-based positioning for outdoor areas and WLAN-based positioning for indoor areas. Each segment operates independently with its own optimization, allowing the system to maintain high positioning accuracy in both outdoor and indoor environments without compromising signal penetration capabilities.
2Reliability
If positioning support data are sent repeatedly to enable position determination, then positioning availability is improved, but security against unauthorized access deteriorates
Solution Approach 1:
Positioning support data are encrypted before being sent to mobile devices. The encryption is performed in advance using cryptographic algorithms, so that even though the data are transmitted repeatedly for positioning availability, they remain secure against unauthorized access. Only authorized devices with the correct decryption keys can access the positioning information.
3Object-affected harmful factors
If decryption keys are managed by a server to control access, then security is improved, but system complexity deteriorates
Solution Approach 1:
A server acts as an intermediary between positioning data sources and mobile devices. The server manages decryption keys and controls access to positioning support data, simplifying the security architecture by centralizing key management rather than requiring complex distributed security protocols in each mobile device.
Data Source
AI summary
A method is disclosed, comprising: holding available, by a first apparatus, encrypted first positioning support data, wherein said encrypted first positioning support data are decryptable by a first decryption key, and wherein said encrypted first positioning support data are configured to enable one or more mobile devices receiving said encrypted first positioning support data and having access to said first decryption key to determine their position at least partially based on said first positioning support data; and automatically and repeatedly sending or triggering sending, by said first apparatus, said encrypted first positioning support data.