1. Christian Doppler Laboratory ATHENA, Institute of Information Technology (ITEC), Alpen-Adria-Universität Klagenfurt, Austria
2. Institute for Communication Systems (ICS), 5G and6G Innovation Centre (5G/6GIC), University of Surrey, Guildford, UK
3. Emeritus Professor at the School of Computer Science and Electronic Engineering, University of Essex, Colchester, UK