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Comparison of location-based and CSI-based resource allocation in D2D-enabled cellular networks

: Botsov, M.; Stanczak, S.; Fertl, P.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE International Conference on Communications, ICC 2015. Proceedings. Vol.4 : Smart City and Smart World, 8-12 June 2015, London, United Kingdom
Piscataway, NJ: IEEE, 2015
ISBN: 978-1-4673-6432-4
ISBN: 978-1-4673-6430-0
International Conference on Communications (ICC) <2015, London>
Fraunhofer HHI ()

This paper provides a performance comparison of location-based and Channel State Information (CSI)-based resource allocation for device-to-device (D2D) communication. Our focus is on a system where the available cellular uplink resources are reused for the exchange of messages between vehicles in D2D underlay manner. In this context, we define a heuristic resource allocation algorithm with a spectral radius feasibility check that aims to satisfy the requirements of automotive applications. Simulations show that the developed CSI-based approach achieves higher spectral efficiency as compared to a location-based scheme. However, the gains come at a price of increased feedback overhead due to the CSI acquisition.