Mobile wireless sensor network gateway: A raspberry Pi implementation with a VPN backend to OpenStack

The paper discusses a solution to allow permanent access to a cloud for the devices in mobile wireless sensor networks. Concepts like Dew Computing DC distributes the cloud infrastructure but has a lack of mobility. Seamless connectivity for applications and services is ensured by implementing a mobility system over different access technologies relying on dynamic context-based routing mechanism in edge nodes. The application scenario involves mobile wireless sensor networks gateways MWSNGs, designed to be installed in public transportation (mainly electric vehicles). The sensors are presumed to be scattered all around a smart city, monitoring environmental parameters and centralizing them through permanent Internet connectivity. The implemented cloud-based testbed includes a Raspberry PI acting as a Compute Node, allowing the deployment of the application in a virtualized manner.