Julien Fasson

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Networking has experienced tremendous changes. Once dedicated to one single type of services, technologies are now offering integrated services: we want to have access to any services anywhere. One challenge is the mobility, with 3G terrestrial offers beginning to be successful. In such a context, satellite systems appear as a real opportunity since they(More)
Session Initial Protocol (SIP) is widely used for handling multimedia signaling. Because SIP is widely used in many multimedia applications, it becomes an attractive target to attackers. Actually, in contrast to traditional telephone networks, SIP works at the application layer in IP networks. It is thus faced to not only the IP-networks security issues,(More)
Initially envisaged to support handover between different wireless 802.x network technologies, the IEEE 802.21 standard also appears as the good candidate for handover management in future integrated satellite / terrestrial systems. This paper presents an analysis of how this standard could be implemented in the frame of a realistic scenario and taking into(More)
Satellite communications can provide fourth generation (4G) networks with large-scale coverage. However, their integration to 4G is challenging because satellite networks have not been designed with handover in mind. The setup of satellite links takes time, and so, handovers must be anticipated long before. This paper proposes a generic scheme based on the(More)
Home networks have been more and more present in today life, delivering miscellaneous services to end users. Then one opportunity consists in deploying services between home networks (service communities). However it requires networking interconnection and efficient authentication mechanisms. According to this context, this paper proposes two network(More)
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