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Nanotechnology is enabling the development of a new generation of deviceswhich are able to sense, process and communicate, while being in the scale oftens to hundreds of cubic nanometers. Such small, imperceptible devices enhancenot only current applications but enable entirely new paradigms especially forin-body environments. This paper introduces a localization and tracking conceptfor bionanosensors floating in the human bloodstream to detect anomalies in thebody. Besides the nanoscale sensors, the proposed system also comprisesmacroscale anchor nodes attached to the skin of the monitored person. Torealize autonomous localization and resource-efficient wireless communicationbetween sensors and anchors, we propose to exploit inertial positioning andsub-terahertz backscattering. The proposed system is a first step towards earlydisease detection as it aims at localizing body regions which show anomalies.Simulations are conducted to enable a systematical evaluation on thefeasibility of the approach.

In-body Bionanosensor Localization for Anomaly Detection via Inertial Positioning and THz Backscattering Communication