SensIaas: A Sensor-Cloud Infrastructure with Sensor Virtualization

In this paper, we propose a sensor-cloud environment which incorporates remotely located physical sensor devices in the generic resource family along with other resources like CPU, memory etc. The environment enables ubiquitous and on-demand access to virtual sensors which are abstractions of physical devices with enhanced capabilities. An architecture of the sensor-cloud environment is discussed in this paper that spans multiple infrastructures hosting local and remote resources. Responsibilities of each of the components in the sensor-cloud architecture are defined and algorithms for provisioning these components are discussed along with some proposed enhancements with respect to our earlier work. As forwarding data traffic is an important task, a high performance I/O redirection algorithm is also proposed to deliver sensed traffic to multiple instances of virtual sensors that is accumulated from one or multiple physical sensors. Performance of the I/O redirection algorithm is observed and the experimental results are presented in this paper.