Commitment to R+D+i
In WimbiTek we certainly know the importance of providing resources to deploy technological innovation in order to bring valuable knowledgement to society in the same way we improve our technological abilities. This is the reason why we maintain the commitment to have a solid R+D+i work line. Consquently, we apply the newest technological approaches in order to expediting their usage in commercial solutions.
Routing in Mobile Wireless Sensor Networks: A Leader-Based Approach
This paper presents a leader-based approach to routing in Mobile Wireless Sensor Networks (MWSN). Using local information from neighbour nodes, a leader election mechanism maintains a spanning tree in order to provide the necessary adaptations for efficient routing upon the connectivity changes resulting from the mobility of sensors or sink nodes. We present two protocols following the leader election approach, which have been implemented using Castalia and OMNeT++. The protocols have been evaluated, besides other reference MWSN routing protocols, to analyse the impact of network size and node velocity on performance, which has demonstrated the validity of our approach.For reading click here
Leader-based routing in mobile wireless sensor networks
This paper presents a routing approach for Mobile Wireless Sensor Networks (MWSN) where all the nodes, sensors and sink, are mobile. A spanning tree is built on the basis of a leader election mechanism that uses only information provided by neighbour nodes, allowing automatic routing adaptation despite node mobility. We present two protocols following the leader election approach, which have been implemented using Castalia and OMNeT++. The protocols have been evaluated, besides other reference MWSN routing protocols, to analyse the impact of network size and node velocity on performance, which has demonstrated the validity of our approach.For reading click here
A Sensor-driven Framework for Rapid Prototyping of Mobile Applications using a Context-Aware Approach
The development of mobile context-aware applications using sensors require the developers to understand several diverse issues: signal acquisition, network protocols, embedded systems, data filtering, etc. We designed and implemented a software framework in order to assist developers in prototyping. Our framework facilitates the use of sensors from wearable devices and supports the reusability of components following a modular approach. This paper describes the design of our approach and highlights the benefits of the framework for the development of mobile applications. To evaluate the framework, representative context-aware applications are described as a case study. The usability of the applications were tested with 26 participants and good results were obtained.For reading click here
Benchmarking Bluetooth SPP Communications for Ubiquitous Computing.
Seamless integration of devices in Ubiquitous Computing requires partaking nodes to perform periodic scans for new nodes in the area, and a set of protocols for interchanging information between devices, among them Bluetooth. In this paper we show an evaluation of the Bluetooth Serial Port Profile (SPP) to study how the communication performance behaves under the discovery process of Bluetooth for new nodes in the vicinity. The results so far show that the performance loss is not dramatic but that it can be improved using different strategies.For reading click here