QoS-guaranteed Clustering and Routing Protocol for Extended Sensor Sharing in Vehicular Networks

As one of the key applications in future vehicular networks, extended sensor sharing (ESS) requires stringent quality-of-service (QoS) for disseminating sensed data to multiple vehicles under high mobility. Ensuring QoS for ESS is challenging network dynamics. To address this issue, we propose a QoS-guaranteed clustering and routing protocol (QCRP) to make routing decisions while adapting to network changes. Specifically, QCRP uses global network information to perform topology control to ensure network connectivity and find optimal routing paths which satisfy the QoS requirements. In addition, QCRP enables re-routing at each relay vehicle based on local network observations to quickly respond to network topology changes caused by mobility. We conduct simulations to evaluate the proposed routing protocol using traffic traces of different densities in a highway scenario and show our solution can achieve the design goal and outperform the existing state-of-the-art.