Abstract
Vehicular Ad-Hoc Networks rely on a multi-channel architecture to support vehicle-to-vehicle and vehicle-to-infrastructure communications. Multiple service channels are assigned in the 5GHz spectrum for non-safety data transfer, while a unique control channel is used for broadcasting safety messages and service advertisements. Single-radio vehicular devices stay tuned on one radio channel at a time and alternately switch between channels to monitor safety messages and to access information and entertainment services; while dual-radio devices can simultaneously stay tuned on both types of channels. Multi-channel coordination, synchronization, and access are big challenges in VANETs; many design choices are still open issues in ETSI and IEEE standardization bodies. In this paper, counter-measures and recent trends in standardization bodies are discussed to cope with inefficiencies related to multi-channel operation for single-radio devices (e.g., inefficient spectrum utilization, synchronized frame collisions, bandwidth waste), and dual-radio devices (e.g., cross-channel interference, coexistence with single-radio devices).
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© 2013 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Campolo, C., Molinaro, A. (2013). Design Challenges and Solutions for Multi-channel Communications in Vehicular Ad Hoc NETworks. In: Zheng, J., Mitton, N., Li, J., Lorenz, P. (eds) Ad Hoc Networks. ADHOCNETS 2012. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 111. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36958-2_20
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DOI: https://doi.org/10.1007/978-3-642-36958-2_20
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