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Reliable safety message dissemination is a fundamental primitive for constructing intersection safety systems. Normally, the dissemination is based on vehicular communications, of which the de-facto standard is Dedicated Short Range Communications (DSRC). However, due to high frequency operations, a DSRC signal is seriously attenuated when being propagated in Non Line-Of-Sight (NLOS) conditions. Previous...
Vehicle traffic on highway systems is typically not uniformly distributed. In this paper, we introduce a protocol that exploits this phenomenon by considering the formations of shock waves and opportunities in adjacent lanes. The objective of this protocol is to reduce the impact of a shock wave by using event-driven messages between vehicles that provide drivers with velocity or lane switching recommendations...
Nowadays, the explosive growth of real-time applications that need stringent Quality of Service (QoS) and Quality of Experience (QoE) support, forces network programmers to design network protocols that deliver specified performance guarantees. This paper exploits the use of Software-Defined Networking (SDN) in conjunction with the OpenFlow protocol to differentiate network services with quality level...
We address the problem of shock wave formation in uncoordinated highway traffic. First, we identify the combination of heavy traffic and small traffic perturbations or unexpected driver actions as the main causes of highway traffic jams. Then we introduce a novel distributed communication protocol that enables us to eliminate upstream shock wave formation even with low system penetration rates. Based...
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