Bringing IP to Low-power Smart Objects: The Smart Parking Case in the CALIPSO Project

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P. Medagliani, J. Leguay, A. Duda, F. Rousseau, S. Duquennoy, S. Raza, G. Ferrari, P. Gonizzi, S. Cirani, L. Veltri, M. Monton, M. Domingo, M. Dohler, I. Villajosana, O. Dupont, Bringing IP to Low-power Smart Objects: The Smart Parking Case in the CALIPSO Project, chapter contribution in Internet of Things Applications – From Research and Innovation to Market Deployment, edited by O. Vermesan and P. Friess, pp. 287-313, The River Publishers Series in Communications, Alborg, Denmark, 2014. ISBN: 9788793102941. Invited chapter by the EC IERC 2014 book on IoT.
Available online (excerpt)

A Routing Aware Wave-based MAC protocol for WSNs

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P. Gonizzi, P. Medagliani, G. Ferrari, and J. Leguay, RAWMAC: A Routing Aware Wave-based MAC protocol for WSNs, 2014 International Workshop on the Green Optimized Wireless Networks (GROWN 2014), in conjunction with the 10th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2014), Larnaca, Cyprus, October 2014 (Accepted in August 2014).
DOI: 10.1109/WiMOB.2014.6962172 Available online

Lightweight Multicast Forwarding for Service Discovery in Low-power IoT Networks

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M. Antonini, S. Cirani, G. Ferrari, P. Medagliani, M. Picone, and L. Veltri, Lightweight Multicast Forwarding for Service Discovery in Low-power IoT Networks, 22nd International Conference on Software, Telecommunications and Computer Networks (SoftCOM 2014), Split, Croatia, September 2014. Best paper award within the Symposium on RFID Technologies and Internet of Things
DOI: 10.1109/SOFTCOM.2014.7039103 Available online

mjCoAP: An Open-Source Lightweight Java CoAP Library for Internet of Things Applications

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Simone Cirani, Marco Picone, Luca Veltri. mjCoAP: An Open-Source Lightweight Java CoAP Library for Internet of Things Applications. Workshop on Interoperability and Open-Source Solutions for the Internet of Things, in conjunction with the IEEE 22st International Conference on Software, Telecommunications and Computer Networks (SoftCOM), Split (Croatia), September 2014. LNCS, vol. 9001, Springer International Publishing Switzerland (2015).
DOI: 10.1007/978-3-319-16546-2_10

Data Storage and Retrieval with RPL Routing

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P. Gonizzi, G. Ferrari, P. Medagliani, J. Leguay. Data Storage and Retrieval with RPL RoutingIWCMC 2013-Mobile Computing. Cagliari, Sardinia, Italy, July 2013. DOI: 10.1109/IWCMC.2013.6583761. Available online

Abstract: In scenarios like the surveillance of isolated areas, when the border node of a network does not have a permanent connection with the Internet, Wireless Sensor Networks (WSNs) are calling for resilient in-network data storage techniques which minimize the risk of data loss. The efficiency of these techniques can be largely improved exploiting information on the status of the network, such as that used by routing protocols. In particular, one of the most used protocol in Internet of Things (IoT) scenarios is the IPv6 Routing Protocol for Low power and lossy networks (RPL). In this paper, we propose a redundant distributed data storage and retrieval mechanism to increase the resilience and storage capacity of a RPL-based WSN against local memory shortage. We evaluate our approach in the Contiki operating system through extensive analysis with the Cooja simulator.

Optimisation de la qualité de service par l’utilisation de mémoire cache

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R.Leone, P. Medagliani, J. Leguay. Optimisation de la qualité de service par l’utilisation de mémoire cache15èmes Rencontres Francophones sur les Aspects Algorithmiques des Télécommunications (AlgoTel), Pornic, France, May 2013.
Available online.

In scenarios like the surveillance of isolated areas, when the border node of a network does not have a permanent connection with the Internet, Wireless Sensor Networks (WSNs) are calling for resilient in-network data storage techniques which minimize the risk of data loss. The efficiency of these techniques can be largely improved exploiting information on the status of the network, such as that used by routing protocols. In particular, one of the most used protocol in Internet of Things (IoT) scenarios is the IPv6 Routing Protocol for Low power and lossy networks (RPL). In this paper, we propose a redundant distributed data storage and retrieval mechanism to increase the resilience and storage capacity of a RPL-based WSN against local memory shortage. We evaluate our approach in the Contiki operating system through extensive analysis with the Cooja simulator.

Optimizing QoS in Wireless Sensor Networks using a Caching Platform

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R. Leone,  P. Medagliani, J. Leguay. Optimizing QoS in Wireless Sensor Networks using a Caching Platform, SENSORNETS, Barcelona, Spain, February 2013.
DOI: 10.5220/0004314400230032 Available online

Abstract: This paper addresses monitoring and surveillance applications using Wireless Sensors  Networks (WSNs). In this context, several remote clients are interested in receiving the information collected by the nodes of a WSN. As WSN devices are most of the time constrained in energy and processing, we present a caching architecture that will help reducing unnecessary communications and adapting the network to application needs. Our aim here is to cache information in order to improve the overall network lifetime, while meeting requirements of external applications in terms information freshness. We first describe and evaluate the performance of our caching system using a Constrained Application Protocol (CoAP)-HTTP proxy. We then extend this work by showing how the cache could be enriched and exploited using cross-layer data. Based on information
from routing packets and estimations of nodes power consumption, we derive an optimization strategy which allows to either maximize the user satisfaction, expressed in terms of freshness of cached data, in the presence of constraints on network lifetime, or jointly maximize network lifetime and user satisfaction, obtaining a set of non-dominated Pareto optimal solutions.