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Publications

Adnan Bekan
A RESTful based architecture for reconfigurable experimental wireless sensor network testbed
MSc thesis, MPS, Ljubljana, Slovenia.

Typically, experimental WSN deployments can be found in research institutions and consist of few tens to few hundreds of low cost, low-power devices with limited processing and communication capabilities. These are typically centrally controlled and have a two or three-tier architecture. A relatively small number of these deployments are based on constrained devices and use a wireless management network, mostly because of the unreliable communication it enables. However, in some cases, such management networks are the only option due to the target location of such testbeds: outdoors, on light posts, buildings, etc.

In this thesis we propose a single-tier architecture for RESTful-based fully reconfigurable wireless sensor network testbed, which (i) can be used for experimentally driven research and development; (ii) should be deployable on an ad-hoc basis in any target environment; (iii) should be remotely configurable and controllable using simple RESTful APIs; (iv) has to be able to reconfigure and support easy experimentation and testing of standard protocol stacks (i.e. uIPv4 and uIPv6) as well as non-standardized clean-slate protocol stacks. In order to achieve this, we identified a list of challenges and requirements for designing a wireless sensor network testbed with optimal configuration to enable experimenting with new applications in, for instance, smart cities, industrial and building automation environments, environmental monitoring, etc.

As a practical part of the thesis we implemented and evaluated the performance of the proposed architecture on a sensor network consisting of VESNA platform nodes. The reference implementation of the architecture uses a dual-stack Contiki OS with the ProtoStack tool for dynamic composition of services. The parameters of the protocol stacks, standardized or non-standardized, can be remotely reconfigured through easy to use CoAP handlers. Additionally, we are able to fully reconfigure clean-slate protocol stacks at run-time. The architecture enables easy set-up of the network by using a protocol that automatically sets up a multi-hop network (i.e. RPL protocol) and it enables reconfiguration and experimentation by using a simple, RESTful interaction with each node individually.

For the validation of the reference implementation, we performed a set of uplink/downlink experiments on the management network and also executed localization experiment for the validation of the experimental network. The obtained experimental results of transmission and relocation times are in line with the expected values, proving that the proposed architecture provides a significantly faster way of deployment and configuration of WSN experimental testbeds compared to traditional deployment of sensor networks relying also on wired infrastructure.

Topic: system
Type: thesis
Keywords: thesis, REST, WSN, sensor, network, testbed, experimental

Download: PDF | PPT

Highlights

As part of activities in the FP7 CREW project the Department of Communication Systems at JSI installed two VESNA SNE-ESTHER devices in London. SNE-ESHTER is a radio receiver for the UHF band designed at JSI based on the VESNA sensor platform. Installed devices will be used for advanced spectrum sensing, contributing to the large scale Ofcom TV White Spaces pilot. One device was installed on the roof of a building in the King's College London Strand campus and the other on the roof of Queen Mary University London. Long term measurements will be used to support the experimentation with advanced, so called cognitive radio devices, as secondary users in currently unused parts of the spectrum.

Marko Pesko, Miha Smolnikar, Matevz Vucnik, Tomaz Javornik, Milica Pejanovic-Djurisic and Mihael Mohorcic published a paper titled "Smartphone with augmented gateway functionality as opportunistic WSN gateway device" in Wireless Personal Communications journal. They described how a Samsung phone connected via Bluetooth to a VESNA sensor node can act as a gateway to a wireless sensor network.

Chapter "Low-cost testbed development and its applications in cognitive radio prototyping" written by our colleagues Tomaž Šolc, Carolina Fortuna and Mihael Mohorcic has been published by Springer in the book  "Cognitive Radio and Networking for Heterogeneous Wireless Networks" from the Recent Advances and Visions for the Future series.

Jernej and Klemen talked with Nickola Naous about our new VESNA sensor node design. Read about The engineers behind the WSN Vesna on the IoTMonkey blog.

The CREW project entered a continuous open access phase. You can test your cognitive radio networking solution on 5 differrent testbed islands and advanced radio components, including our LOG-a-TEC testbed and the VESNA sensor network platform.

In cooperation with Adria Mobil we are developing a motorhome for the future. Adria Moving Lab is equipped with intelligent sensors that allow the vehicle to adapt to its user. This way we can optimize the use of consumables like fuel and water and exploit renewable sources of energy like solar power. The prototype has been unveiled at the Institute Jožef Stefan open days in April 2014.

Our paper "Trends in the development of communication networks: Cognitive networks" is the 10th among the 25th most cited articles published since 2009, extracted from Scopus, see all on the Elsevier web site.

Check the "Cognitive radio experimentation with VESNA platform" presentation by Miha Smolnikar at the School on Applications of Open Spectrum and White Spaces Technologies.

We are looking for a C programmers that would join the team developing the VESNA platform. Candidates that have previous experience with electronic circuit design, operating systems or open source projects will have priority.

 

We are constantly open for talented, open minded and hard working undergraduate students, interns and MSc/PhD candidates. Read more.

[ more highlights ]

Videolectures


Dynamic composition of communication services

Carolina Fortuna

Orchestrating Virtual Wireless Networks from Shared Resource Pools
Luiz DaSilva


VESNA in Kognitivni Radio

Tomaž Šolc

[ more videolectures ]

Demos


SensorNetwork testbed
Mash-up demo.

 

GSN demo

[ more demos ]

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