Vehicular delay-tolerant network (VDTN) is a network architecture based on the delay-tolerant network paradigm,\r\nwhich was designed to provide low-cost asynchronous vehicular communications in environments with\r\ndisruptions, intermittency, variable delays, and network partition. This article proposes a laboratory testbed for\r\nVDTNs, called VDTN@Lab. It aims to support research studies related with the design, emulation, performance\r\nevaluation, and diagnose of new VDTN protocols, services, and applications. It intends to demonstrate the\r\napplicability of VDTNs over multiple application environments. VDTN@Lab features an emulation capability,\r\nallowing live experiments with prototyped hardware and software embedded into robotic cards, desktop, and\r\nnetbooks computers. The proposed prototype is demonstrated and evaluated with Epidemic, and Spray, and Wait\r\nrouting protocols, using different combinations of scheduling and dropping policies, in scenarios with different\r\nvehicular mobility models (bus movement and random movement across roads).
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