Research Article
Enforcing Replica Determinism in the Road Side Units of Fault-Tolerant Vehicular Networks
@INPROCEEDINGS{10.1007/978-3-319-51207-5_1, author={Jo\"{a}o Almeida and Joaquim Ferreira and Arnaldo Oliveira and Paulo Pedreiras and Jos\^{e} Fonseca}, title={Enforcing Replica Determinism in the Road Side Units of Fault-Tolerant Vehicular Networks}, proceedings={Future Intelligent Vehicular Technologies. First International Conference, Future 5V 2016, Porto, Portugal, September 15, 2016, Revised Selected Papers}, proceedings_a={FUTURE 5V}, year={2017}, month={1}, keywords={Vehicular networks Intelligent transportation systems Real-time communications Fault-tolerance mechanisms Active replication scheme Replica consistency Atomic commit protocol}, doi={10.1007/978-3-319-51207-5_1} }- João Almeida
Joaquim Ferreira
Arnaldo Oliveira
Paulo Pedreiras
José Fonseca
Year: 2017
Enforcing Replica Determinism in the Road Side Units of Fault-Tolerant Vehicular Networks
FUTURE 5V
Springer
DOI: 10.1007/978-3-319-51207-5_1
Abstract
This paper presents a strategy to enforce replica determinism in the road-side units (RSUs) of wireless vehicular networks. An active replication scheme is used to enhance fault-tolerant behaviour in these RSU nodes, which are responsible for handling channel access and admission control policies in real-time vehicular communications protocols. The proposed solution guarantees consistency among all RSU replicas, by introducing a dedicated link shared exclusively by these units, allowing them to implement an atomic commit protocol of the packets received through the wireless medium. This strategy also has the advantage of reducing packet loss, since only one replica needs to successfully decode the packet in order for it to become available to the RSU group of replicas. It should be noticed however that this method increases the total delay of packet delivery to the upper layers of the communications protocol, so its impact on the real-time properties of the network needs to be further evaluated.