PHY and MAC Layer Exploration for Dependable Cellular-Assisted Vehicular Communications
Thesis advisor: Markus Rupp
Vehicular communications is an important enabler for enhancing the safety on roads by supporting mutual awareness of vehicles, as well as, for improving the efficiency of transportation through smart traffic management by intelligent transport systems. Legacy vehicular communication systems are based on dedicated road-side infrastructure and transmission bands; however, recently the interest in cellular-assisted vehicular communications is increasing, to exploit synergies between dedicated ad-hoc transmission (mainly based on 802.11) and mobile cellular systems (5G) to enhance the dependability of vehicular connectivity. In this thesis, PHY and MAC layer signal processing methods for cellular-assisted vehicular communications will be proposed and analyzed, with specific focus on enhancing efficiency and dependability of vehicular connectivity in dense traffic scenarios.
Wireless Vehicular Connectivity for Cooperative Transport
Thesis advisor: Christoph Mecklenbräuker
Vehicle-to-Anything Communication enables cleaner, safer, and more eficient traffic by coordinating the traffic flow among the road users. Currently, the fourth generation telecommunication proposal V2X LTE competes with local area networks based on the IEEE 802.11 protocol stack in the 5 GHz band. Fifth generation (5G) cellular access promises to support current vehicular use cases as well as future ones through diversification of radio access (below and above 6 GHz) for low-latency at high reliability (e.g. safety-relevant messaging, sharing of radar and video information) or high data rate (for road map updates). Initial ideas in this direction are: coded slotted ALOHA, multitier communication, radio resource management based on convex optimization theory, as well as full-duplex operation. A specific diversified radio access scheme will be proposed for a selected cooperative transport use case, analysed in theory, prototyped for road tests, and evaluated by measurements in selected real-world vehicular scenarios.