Daniele Manini - IEEE Xplore Author Profile

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We analyze next generation cellular networks, offering connectivity to mobile users through multiple radio access technologies (RATs), namely LTE and WiFi. We develop a framework based on the Markovian agent formalism, which can model several aspects of the system, including user traffic dynamics and radio resource allocation. In particular, through a mean-field solution, we show the ability of ou...Show More
Cloud Computing is emerging today as a commercial infrastructure that through the use of virtualization aims to provide on demand computing resources. In particular, the Infrastructure as a Service (IaaS) is a cloud service that allows the user to perform and execute any OS and application in virtual environments. In this work we present an evaluation of different policies for the assignment of vi...Show More
We study the delay performance of a sensor network, whose nodes access the medium by using the unslotted MAC protocol specified by the IEEE 802.15.4 standard. Unlike previous works, which focus on the average throughput and delay analysis, we develop a detailed model that allows us to obtain the delivery delay distribution of messages sent by concurrently contending sensors toward a central contro...Show More
We study the delay performance of a sensor network, whose nodes access the medium by using the unslotted MAC protocol specified by the IEEE 802.15.4 standard. Unlike previous works which focus on the average throughput and delay analysis, we develop a detailed model that allows us to obtain the delivery delay distribution of messages sent by concurrently contending sensors toward a central control...Show More
Gillespie's algorithm serves to simulate a network of stochastic reactions with given initial quantities and kinetic rate constants.  In this paper we consider the estimation of the kinetic rate constants of the reactions based on a set of discrete observations generated by Gillespie's algorithm. In particular, we present an Expectation Maximisation (EM) method to perform maximum likelihood estima...Show More
File transfer using peer-to-peer file sharing applications is usually divided into two steps: resource search and resource download. Depending on the file size and its popularity, either of the two phases can become the bottleneck. In this paper we describe both the location and download phases of a generic peer-to-peer file sharing application using a fluid model. The proposed model allows the co...Show More
Peer-to-Peer (P2P) based file sharing applications have become highly popular in today’s Internet due to the spread of platforms such as Napster, Gnutella, KaZaa, eDonkey, BitTorrent, and others. There are several interesting issues in P2P-based file sharing applications that affect their performance. As their diffusion grew, the scientific community started to analyze these applications using ana...Show More
The behavior of large-scale wireless sensor networks has been shown to be surprisingly complex and difficult to analyze, both by empirical experiment and simulation. In this paper we develop a new analytical model of the behavior of wireless sensor networks, based on a fluid approach, i.e., we represent the sensor network by a continuous fluid entity distributed on the network area. The model acco...Show More
The rapid growth of the Internet, in both user numbers and Web content, has fueled extensive efforts to improve the user's overall Internet experience. A growing number of providers deliver content from multiple servers or proxies to reduce response time by moving content closer to end users. An increasingly popular mechanism to direct client requests towards one of the replica servers is DNS-base...Show More