@conference { ISI:000386851600006,
	title = {A College Admissions Game for Content Caching in Heterogeneous Delay Tolerant Networks},
	booktitle = {2016 23RD INTERNATIONAL CONFERENCE ON TELECOMMUNICATIONS (ICT)},
	year = {2016},
	note = {23rd International Conference on Telecommunications (ICT), Thessaloniki, GREECE, MAY 16-18, 2016},
	abstract = {In recent years, Delay Tolerant Networks (DTNs) have been successfully presented as a possible extension of the Internet architecture in order to provide communication support to existing networks. However, these networks have a major issue which is the coordination among relays. In this paper, we propose a novel mechanism source-relay association approach for heterogeneous DTNs that exploits the information about the history and predictability of the relay nodes while also we focus on the source packet dissemination to a destination using tow-hop relaying scheme, considering network resource constraints: the relay buffer, the packet life time, and the energy consumption according to the mobile technologies. We formulate the problem as a college admissions game in which a number of colleges, i.e., data source seek to recruit a number of students, i.e., relays nodes. In this game, the data source and relays nodes rank one another based on preference functions that capture the data sources need to optimize their utilities which are functions of packet success rate and delay. We propose a novel distributed algorithm that leads to a stable matching among data sources and relays nodes. We show that the proposed approach can yields the better performance improvement of the traffic among the source and destination node.},
	isbn = {978-1-5090-1990-8},
	author = {Oualhaj, Omar Ait and Sabir, Essaid and Kobbane, Abdellatif and Ben-Othman, Jalel and El Koutbi, Mohammed}
}
@conference { ISI:000381477900169,
	title = {A Coalitional-Game-Based Incentive Mechanism for Content Caching in Heterogeneous Delay Tolerant Networks},
	booktitle = {2015 INTERNATIONAL WIRELESS COMMUNICATIONS \& MOBILE COMPUTING CONFERENCE (IWCMC)},
	series = {International Wireless Communications and Mobile Computing Conference},
	year = {2015},
	note = {11th IEEE International Wireless Communications and Mobile Computing Conference (IEEE IWCMC), Dubrovnik, CROATIA, AUG 24-25, 2015},
	pages = {987-992},
	publisher = {IEEE; IEEE Croatia Sect; Univ Dubrovnik},
	organization = {IEEE; IEEE Croatia Sect; Univ Dubrovnik},
	abstract = {In recent years, Delay Tolerant Networks (DTNs) have successfully presented as a possible extension of the Internet architecture in order to provide communication support to existing networks. However, these networks have a major issue which is the coordination among relays. In this work, we study the cooperative transmission for DTNs using coalitional game theory. We design a new incentive mechanism for heterogeneous system to induce coordination among DTN relays. In particular, we focus on the source packet dissemination to a destination using tow-hop relaying scheme, considering networks resource constraints: the relay buffer, the packet life time, and the energy consumption according to the mobile technologies. Rational mobiles are organized into separate coalition structures to meet a trade off between the source reward and the energy conservation. We discus the Nash equilibria for our game and the stable strategy state in which no mobile can get a higher payoff through changing unilaterally its coalition. Then, we use the distributed imitative Boltzmann-Gibbs learning algorithm enabling relays to learn the Nash equilibrium strategy; grand coalition. The improvement of the global system performance is examined, and a comparison between different inter-node collaboration states is presented.},
	isbn = {978-1-4799-5344-8},
	issn = {2376-6492},
	author = {Oualhaj, Omar Ait and Kobbane, Abdellatif and Elmachkour, Mouna and Sabir, Essaid and Ben-Othman, Jalel}
}
@article { ISI:000360910900010,
	title = {A ferry-assisted solution for forwarding function in Wireless Sensor Networks},
	journal = {PERVASIVE AND MOBILE COMPUTING},
	volume = {22},
	number = {SI},
	year = {2015},
	month = {SEP},
	pages = {126-135},
	abstract = {For sure, Wireless Sensor Networks (WSNs) are becoming an ultimate part of next generation mobile networks. They are a master piece for Ubiquitous computing. Indeed, they sustain development of numerous paradigms/ technologies such as distributed ambient intelligence, context-awareness and future mobile networking (e.g., B4G and 5G). Battery life remains one of the crucial problems to handle. In this article we propose an infrastructure-based topology using mobile ferries (mobile micro-base stations). In real life, a ferry could be robot, bus, tram, train or any other engine scrutinizing periodically a given area. Yet, message ferries are moving along concentric annulus and may collect data generated by the static sensors (could be classic sensors, smart meters, wearable devices, etc.) randomly distributed on given area. Next, transmissions are performed in a ferry-to-ferry forwarding scheme till arriving at the sink. Considered ferries could sense themselves data and therefore behave as mobile sensors allowing better awareness on the area state {[}1-3]. Our scheme could also assist Machine-to-Machine communications to increase the network lifetime, with potentially some cognitive-radio capabilities and opportunistic detection and access. Our proposal can easily be integrated in a smart-city for better interaction and green communications. Next, we present a queueing model (queues with finite capacity) to handle the generated traffic and to analyze the behavior of mobile ferries. We provided a close-form expression for both end-to-end throughput and end-to-end delay. The main objective of this work is to improve the energy efficiency of the cognitive sensors by asking cognitive sensors to not care about forwarding data of each other except for urgent data, this latter point is out of the scope of the paper. These static sensors will only care about data sensing, which will reduce their individual energy consumption. (C) 2015 Elsevier B.V. All rights reserved.},
	issn = {1574-1192},
	doi = {10.1016/j.pmcj.2015.05.003},
	author = {Oualhaj, Omar Ait and Kobbane, Abdellatif and Sabir, Essaid and Ben-Othman, Jalel and Erradi, Mohammed}
}
