Providing Different Quality of Service Levels by Routing Protocol for Virtualized Wireless Sensor Networks
Virtualization of Wireless Sensor Networks (WSN) is a new concept that can provide a common platform upon which new federated sensor architectures can be built, experimented and evaluated. A Virtualized Sensor Network (VSN) is formed by a subset of sensor nodes of a physical WSN that is dedicated to a certain task or an application at a given time. In this paper, we investigate the requirements that virtualization imposes on the routing procedure of the involved WSNs and propose a routing scheme: Virtualized-EMRP (based on EMRP [1]). In addition, over the same WSN, different applications may require different QoS levels but satisfying this is not always a straightforward task. In the context of VSN, this task can be resolved by initializing different instances of Virtualization-EMRP routing protocol and adjusting its routing metrics. We use OMNET++ simulator for different scenarios of Virtualized-EMRP associated with different routing metrics and simulation results show that QoS differentiation for different applications can be achieved.