OpenMote: Open-Source Prototyping Platform for the Industrial IoT

Abstract

Data replication is a widely used redundancy scheme for improving data availability and performance in distributed systems. However, currently existing replication schemes do not take into account that the mobile ad hoc net- work is often partitioned in smaller portions, enjoying only intermittent connec- tivity thanks to mobile nodes traveling across partitions. A novel replication scheme, RICMAN (Replication in Intermittently Connected Mobile Ad Hoc Networks), is proposed to address this problem. Desired data items are repli- cated to the nodes with rather stable neighboring topology and with enough resources such as energy and storage space. A semi-probabilistic data dissemi- nating protocol is employed to distribute the replicas and propagate the updates, which can identify the potential mobile nodes traveling across partitions to maximize data delivery despite network partitions and intermittent connectivity. Simulation results demonstrate that RICMAN scheme leads to good successful data access ratios and latencies with small overheads.