CORB: Context-aware opportunistic resource-based routing for stationary wireless sensor networks

In this paper, we present the Context-Aware Opportunistic Resource-Based Routing Protocol (CORB) for intermittently-connected stationary wireless sensor networks. This protocol targets domains such as ambiance control in smart buildings. Unlike existing context-aware routing approaches which consider node mobility as the main source of disconnection, CORB only considers the nodes´ limited resources and context as the reasons for intermittent connection. Performance evaluation results show that the proposed CORB protocol does not only outperform existing context-aware routing protocols but also significantly outperforms the IP Ripple Routing Protocol (RPL) designed specifically for low power and lossy networks. In grid topologies (sink-centered topologies), the delivery ratio of CORB under heavy loads is up to 404% and 296% (143% and 46.6%) of the original context-aware routing protocol and IPv6 RPL, respectively.