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Displaying 1-19 out of 19 total
On the feasibility of power control in current IEEE 802.11 devices
Found in: Pervasive Computing and Communications Workshops, IEEE International Conference on
By Fehmi Ben Abdesslem, Luigi Iannone, Marcelo Dias de Amorim, Konstantin Kabassanov, Serge Fdida
Issue Date:March 2006
pp. 468-473
Recent research in wireless communications has achieved important results by exploring more and more sophisticated solutions involving power control. Cross-layer design and topology control are the main examples. Although much has been done in the theoreti...
Collaborative data collection in global sensing systems
Found in: Local Computer Networks, Annual IEEE Conference on
By Greg Bigwoodt,Aline Carneiro Viana,Marcelo Dias de Amorim,Mathias Boc
Issue Date:October 2011
pp. 243-246
Here, we first investigate data collection delegation strategies based on the relative importance of nodes in their social interactions. Second, by considering a prediction strategy that estimates the likelihood of two nodes meeting each other, we investig...
Dynamic Service Contract Enforcement in Service-Oriented Networks
Found in: IEEE Transactions on Services Computing
By Yesid Jarma,Keerthana Boloor,Marcelo Dias de Amorim,Yannis Viniotis,Robert D. Callaway
Issue Date:January 2013
pp. 130-142
In recent years, service-oriented architectures (SOA) have emerged as the main solution for the integration of legacy systems with new technologies in the enterprise world. A service is usually governed by a client service contract (CSC) that specifies, am...
Wardrop Equilibrium Formulation of Resource-Constrained DTN Routing in Public Safety Networks
Found in: Mobile Ad-Hoc and Sensor Systems, IEEE International Conference on
By Pierre-Ugo Tournoux,Vania Conan,Jon Crowcroft,Jérémie Leguay,Marcelo Dias de Amorim,Farid Benbadis
Issue Date:October 2011
pp. 968-974
No summary available.
Density-Aware Routing in Highly Dynamic DTNs: The RollerNet Case
Found in: IEEE Transactions on Mobile Computing
By Pierre-Ugo Tournoux,Jérémie Leguay,Farid Benbadis,John Whitbeck,Vania Conan,Marcelo Dias de Amorim
Issue Date:December 2011
pp. 1755-1768
We analyze the dynamics of a mobility data set collected in a pipelined disruption-tolerant network (DTN), a particular class of intermittently-connected wireless networks characterized by a 1-D topology. First, we collected and investigated traces of cont...
Towards Multi-Service Traffic Shaping in Two-Tier Enterprise Data Centers
Found in: Cloud Computing Technology and Science, IEEE International Conference on
By Yesid Jarma,Marcelo Dias de Amorim,Yannis Viniotis
Issue Date:December 2011
pp. 640-645
In Enterprise Data Centers (EDC), service providers are usually governed by Client Service Contracts (CSC) that specify, among other requirements, the rate at which a service should be accessed. The contract limits the rate to no more than a number of serv...
An empirical analysis of Wi-Fi activity in three urban scenarios
Found in: Pervasive Computing and Communications, IEEE International Conference on
By Thomas Claveirole, Mathias Boc, Marcelo Dias de Amorim
Issue Date:March 2009
pp. 1-6
A better understanding of people's daily behaviors with respect to the underlying wireless network is a crucial step toward Wi-Fi based pervasive networking. Existing analyses found in the literature have focused on closed environments such as university c...
Examining vicinity dynamics in opportunistic networks
Found in: Proceedings of the 8th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks (PM2HW2N '13)
By Miguel Elias M. Campista, Tiphaine Phe-Neau, Marcelo Dias de Amorim, Vania Conan
Issue Date:November 2013
pp. 153-160
Modeling the dynamics of opportunistic networks generally relies on the dual notion of contacts and intercontacts between nodes. We advocate the use of an extended view in which nodes track their vicinity (within a few hops) and not only their direct neigh...
Trace selection for improved WLAN monitoring
Found in: Proceedings of the 5th ACM workshop on HotPlanet (HotPlanet '13)
By Marcelo Dias de Amorim, Matteo Sammarco, Miguel Elias Mitre Campista
Issue Date:August 2013
pp. 9-14
Existing measurement techniques for IEEE~802.11-based networks assume that the higher the density of monitors in the target area, the higher the quality of the measure. This assumption is, however, too strict if we consider the cost involved in monitor ins...
Temporal reachability graphs
Found in: Proceedings of the 18th annual international conference on Mobile computing and networking (Mobicom '12)
By Jean-Loup Guillaume, John Whitbeck, Marcelo Dias de Amorim, Vania Conan
Issue Date:August 2012
pp. 377-388
While a natural fit for modeling and understanding mobile networks, time-varying graphs remain poorly understood. Indeed, many of the usual concepts of static graphs have no obvious counterpart in time-varying ones. In this paper, we introduce the notion o...
Predicting the popularity of online articles based on user comments
Found in: Proceedings of the International Conference on Web Intelligence, Mining and Semantics (WIMS '11)
By Alexandru Tatar, Arnaud Limbourg, Jeremie Leguay, Marcelo Dias de Amorim, Panayotis Antoniadis, Serge Fdida
Issue Date:May 2011
pp. 1-8
Understanding user participation is fundamental in anticipating the popularity of online content. In this paper, we explore how the number of users' comments during a short observation period after publication can be used to predict the expected popularity...
Critical analysis of encounter traces
Found in: Proceedings of the 2010 ACM workshop on Wireless of the students, by the students, for the students (S3 '10)
By John Whitbeck, Marcelo Dias de Amorim, Vania Conan
Issue Date:September 2010
pp. 29-32
The limitations of contact-logging experiments, particularly those based on periodic Bluetooth neighborhood scans, prevent them from detecting many contact opportunities. This paper highlights recent results on inferring a plausible movement from contact t...
Plausible mobility: inferring movement from contacts
Found in: Proceedings of the Second International Workshop on Mobile Opportunistic Networking (MobiOpp '10)
By John Whitbeck, Marcelo Dias de Amorim, Vania Conan
Issue Date:February 2010
pp. 110-117
We address the difficult question of inferring plausible node mobility based only on information from wireless contact traces. Working with mobility information allows richer protocol simulations, particularly in dense networks, but requires complex set-up...
Practical DHT-based location service for wireless mesh networks
Found in: Proceedings of the 5th international student workshop on Emerging networking experiments and technologies (Co-Next Student Workshop '09)
By Luigi Iannone, Marcelo Dias de Amorim, Mehdi Bezahaf, Serge Fdida
Issue Date:December 2009
pp. 47-48
Mobility management in Wireless Mesh Networks (WMN) is a hot topic still lacking a final, widely accepted, and deployed solution. The major drawbacks of existing proposals is the fact that they rely on some sort of flooding-based technique and very often t...
Selecting an appropriate routing protocol for in-field MANEMO experiments
Found in: Proceedings of the 6th ACM symposium on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks (PE-WASUN '09)
By Hajime Tazaki, Jun Murai, Kanchana Kanchanasut, Marcelo Dias de Amorim, Rodney Van Meter, Ryuji Wakikawa, Thirapon Wongsaardsakul
Issue Date:October 2009
pp. 101-107
Despite years of research in ad hoc routing protocols, only a few have been investigated in the context of MANEMO (MANET for NEMO), which provides a hierarchical structured network and global connectivity. Motivated by the deployment of post-disaster MANEM...
WiPal and WScout, two hands-on tools for wireless packet traces manipulation and visualization
Found in: Proceedings of the third ACM international workshop on Wireless network testbeds, experimental evaluation and characterization (WiNTECH '08)
By Marcelo Dias de Amorim, Thomas Claveirole
Issue Date:September 2008
pp. 1-2
In this demonstration paper, we present an overview of WiPal and WScout, two tools to handle IEEE 802.11 packet traces. WiPal embeds several programs to manipulate IEEE 802.11 packet traces, while WScout is a visualizing program designed for large packet t...
Sensing and acting with predefined trajectories
Found in: Proceeding of the 1st ACM international workshop on Heterogeneous sensor and actor networks (HeterSanet '08)
By Aline Carneiro Viana, Marcelo Dias de Amorim
Issue Date:May 2008
pp. 83-92
We consider applications of mobile wireless sensor actor networks(MWSAN) that require periodic readings and/or actions. In such a context, a single integrated sensor-actor can be used to monitor different regions of the target area if it is able to move fr...
Otiy: locators tracking nodes
Found in: Proceedings of the 2007 ACM CoNEXT conference (CoNEXT '07)
By Anne Fladenmuller, Marcelo Dias de Amorim, Mathias Boc
Issue Date:December 2007
pp. 89-97
We propose Otiy, a node-centric location service that limits the impact of location updates generate by mobile nodes in IEEE 802.11-based wireless mesh networks. Existing location services use node identifiers to determine the locator (aka anchor) that is ...
Resisting against aggregator compromises in sensor networks
Found in: Proceedings of the 2006 ACM CoNEXT conference (CoNEXT '06)
By Marcelo Dias de Amorim, Michel Abdalla, Thomas Claveirole, Yannis Viniotis
Issue Date:December 2006
pp. 89-97
In order to reduce the amount of radio communications, wireless sensor networks may perform data aggregation, where relaying nodes perform in-network processing. Guaranteeing security in aggregation schemes is particularly challenging because node compromi...