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Although vehicular ad hoc networks are emerging as a novel paradigm for safety services, supporting real-time applications (e.g., video-streaming, Internet browsing, online gaming, etc.) while maintaining ubiquitous connectivity remains a challenge due to both high vehicle speed, and non-homogeneous nature of the network access infrastructure. To guarantee acceptable Quality-of-Service and to support seamless connectivity, vertical handovers across different access networks are performed. In this work the authors prove the counterintuitive result that in vehicular environments, even if a candidate network has significantly higher bandwidth, it is not always beneficial to abandon the serving network.
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