Abstract. Sensor networks are gradually moving towards full-IPv6 architectures and play an important role in the upcoming Internet of Things. Some mission-critical applications of sensor networks will require a level of reliability that excludes the presence of single points of failure, as it is often the case today for the gateways connecting sensor networks to the Internet. In this paper, we introduce RPL-6LBR, a 6LoWPAN border router that addresses mission-critical deployments through redundancy. The paper discusses how existing standards may be leveraged to enable redundant border router synchronization, while identifying certain of their shortcomings. We also propose innovative network architectures incorporating multiple border routers, which deal with redundancy and node mobility without requiring any synchronization among the border routers. We implement the proposed RPL-6LBR in the Contiki operating system and report on this implementation through trials on a small-scale testbed and simulator. Our results open new possibilities for real-world wireless sensor networks requiring reliable border routers, and guide further standardization efforts in emerging technologies in support of the Internet of Things.
In this paper, we present an innovative software architecture that brings dynamics to the world of interconnected small devices and sensors by mixing cloud services, semantics and border router technologies. Dynamic aspects can be enabled both in the way that the devices are deployed or managed as well as in the manner in which the data can be combined or interpreted to form additional services. We got inspired from the architecture of mediators and wrappers in databases and services systems and adapt them to the IoT world. We illustrate our purposes with a use case scenario that involves different actors from the energy and smart cities domains.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.