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An Efficient and Reliable Multi-Hop Geographical Broadcast Protocol in Vehicular Ad-Hoc Networks
Högskolan i Halmstad, Akademin för informationsteknologi.
Network Technology, TNO, Delft, Netherlands.
2013 (Engelska)Ingår i: 13th International Conference on ITS Telecommunications, ITST 2013, New York: IEEE, 2013, s. 1-7, artikel-id 6685512Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

In Intelligent Transportation Systems (ITS), disseminating warning messages in a timely and efficient way through wireless short-range communications can save many lives and reduce traffic congestion. A geographical broadcast protocol provides data delivery to specified geographical areas, using multi-hop communications if needed. Among the main challenges for such protocols are forwarder selection and the reduction of the number of hops required to reach and cover the destination area. In this paper we propose an efficient geographical broadcast protocol called Preferred and Contention Based Forwarding (PCBF) and evaluate it through simulations. PCBF uses a combination of contention-based forwarding and selecting preferred forwarders also found in other protocols like Emergency Message Dissemination for Vehicular Environments (EMDV). Since the preferred forwarder is allowed to immediately forward the packet (evading contention among other potential forwarders), this approach reduces end-to-end delays. Notable extensions of PCBF compared to EMDV are the use of direct negative acknowledgements in case of unnecessary rebroadcasts and the use of forwarders outside the target region. Our simulation results show that the PCBF protocol outperforms selected other protocols in terms of end-to-end delay, re-broadcast overhead and reliability in both sparse and dense networks. © 2013 IEEE

Ort, förlag, år, upplaga, sidor
New York: IEEE, 2013. s. 1-7, artikel-id 6685512
Nyckelord [en]
ITS, routing, geographical broadcast, timer-based protocol, forwarder selection, contention-based forwarding
Nationell ämneskategori
Kommunikationssystem
Identifikatorer
URN: urn:nbn:se:hh:diva-35745DOI: 10.1109/ITST.2013.6685512ISI: 000330842900001Scopus ID: 2-s2.0-84893519610ISBN: 978-1-4799-0846-2 (tryckt)OAI: oai:DiVA.org:hh-35745DiVA, id: diva2:1177983
Konferens
13th International Conference on ITS Telecommunications (ITST), Nov. 5-7, 2013, Tampere, Finland
Tillgänglig från: 2018-01-26 Skapad: 2018-01-26 Senast uppdaterad: 2018-01-26Bibliografiskt granskad

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