  The Tunka Radio Extension (Tunka-Rex) is a cosmic-ray detector operating
since 2012. The detection principle of Tunka-Rex is based on the radio
technique, which impacts data acquisition and storage. In this paper we give a
first detailed overview of the concept of the Tunka-Rex Virtual Observatory
(TRVO), a framework for open access to the Tunka-Rex data, which currently is
under active development and testing. We describe the structure of the data,
main features of the interface and possible applications of the TRVO.
