Ad hoc relay wireless networks over moving vehicles on highways
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Replication Techniques in Distributed Systems
Replication Techniques in Distributed Systems
Basic Concepts and Taxonomy of Dependable and Secure Computing
IEEE Transactions on Dependable and Secure Computing
Collaborative backup for dependable mobile applications
MPAC '04 Proceedings of the 2nd workshop on Middleware for pervasive and ad-hoc computing
Queueing Networks and Markov Chains
Queueing Networks and Markov Chains
Connectivity dynamics in vehicular freeway scenarios
GIIS'09 Proceedings of the Second international conference on Global Information Infrastructure Symposium
Connectivity analysis of one-dimensional ad-hoc networks
Wireless Networks
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In order to increase availability and reliability of stateful applications, redundancy as provided by replication in cluster solutions is a well-known and frequently utilized approach. For mobile services in dynamic ad-hoc networks, such replication mechanisms have to be adapted to deal with the frequently higher communication delays and with the intermittent connectivity. Dynamic clustering strategies in which the replica set is adjusted to the current network state can help to handle the network dynamicity. The paper develops a stochastic Petri net model (and its corresponding Markov chain representation) to analyze the resulting availability and replica consistency in such dynamic clusters. The numerical results are interpreted in the context of a vehicular (c2c) communication use-case and can be used to determine optimized cluster configuration parameters.