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Contention-based forwarding with multi-hop connectivity awareness in vehicular ad-hoc networks |
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| Authors: | Michele Rondinone Javier Gozalvez |
| Affiliation: | 1. Department of Computer Science and Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh;2. School of Computer Science, University of Oklahoma, USA;1. Department of Computing, Curtin University of Technology, Perth, WA, Australia;2. University of Wollongong, Northfields Ave., Wollongong, NSW, Australia;1. Télécom ParisTech, 46 rue Barrault, 75634 Paris, France;2. Bell Labs, Alcatel-Lucent Villarceaux, Route de Villejust 91620 Nozay, France;3. France Télécom R&D – Orange Labs, 38-40 rue du général Leclerc, 92794 Issy-les-Moulineaux, France;1. Xi’an University of Posts and Telecommunications, Xi’an, China;2. Department of Computer Science and Engineering, University of Connecticut, Storrs, CT 06269, USA |
| Abstract: | Recent vehicular routing proposals use real-time road traffic density estimates to dynamically select forwarding paths. Estimating the traffic density in vehicular ad hoc networks requires the transmission of additional dedicated messages increasing the communications load. These proposals are generally based on unicast sender-based forwarding schemes. The greedy nature of sender-based forwarding can result in the selection of forwarders with weak radio links that might compromise the end-to-end performance. To overcome these limitations, this paper presents TOPOCBF, a novel contention-based broadcast forwarding protocol that dynamically selects forwarding paths based on their capability to route packets between anchor points. Such capability is estimated by means of a multi-hop connectivity metric. The obtained results demonstrate that TOPOCBF can provide good packet delivery ratios while reducing the communications load compared to unicast sender-based forwarding schemes using road traffic density estimates. |
| Keywords: | Cooperative vehicular communications Multi-hop connectivity Routing protocols Vehicular ad hoc networks Vehicle-to-vehicle communications |
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