Secure Positioning of Mobile Terminals with Simplex Radio Communication
Mikio Fujii

TL;DR
This paper introduces a secure positioning method for mobile terminals using unidirectional radio communication and a high-precision internal clock, enhancing privacy and accuracy in adversarial environments.
Contribution
It presents a novel secure positioning mechanism that relies on unidirectional communication and an internal clock, improving privacy and reducing timing errors compared to previous bidirectional methods.
Findings
Protects user location privacy by not requiring information exchange with trusted stations.
Eliminates errors caused by processing-time fluctuations in challenge-response protocols.
Suitable for high-speed mobile terminals in open environments.
Abstract
With the rapid spread of various mobile terminals in our society, the importance of secure positioning is growing for wireless networks in adversarial settings. Recently, several authors have proposed a secure positioning mechanism of mobile terminals which is based on the geometric property of wireless node placement, and on the postulate of modern physics that a propagation speed of information never exceeds the velocity of light. In particular, they utilize the measurements of the round-trip time of radio signal propagation and bidirectional communication for variants of the challenge-and-response. In this paper, we propose a novel means to construct the above mechanism by use of unidirectional communication instead of bidirectional communication. Our proposal is based on the assumption that a mobile terminal incorporates a high-precision inner clock in a tamper-resistant protected…
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Taxonomy
TopicsIndoor and Outdoor Localization Technologies · Mobile Ad Hoc Networks · Wireless Networks and Protocols
