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Mobile computing is increasingly becoming important to business and enterprises, especially SMEs (Small and Medium Size Enterprises). Mobile applications are seen not only as a means to offer enterprise services to clients online but also to improve their operational activity, increase their efficiency and reduce costs. In this paper we take the business perspective by a use case analysis on the mobile...
With the ever increasing number of mobile devices and their computational capacity in terms of processing, storage and software, the use of smart devices is being employed each time more not only for basic use and entertainment and social networking but also for work. Besides this added value to use smart devices for work at individual level, the interest is of course to explore the use of such devices...
P2P technologies have been considered as one of the most disruptive Internet technologies in achieving fully decentralized and efficient communication in distributed systems. Indeed, the nature of the direct communication among peers in the system, being these machines or people, makes possible to overcome the limitations of the flat communications through email, newsgroups and other forum-based communication...
Synchronization protocols have been widely investigated in distributed systems aiming to achieve real-time and scalable properties. With the fast development of large-scale distributed systems, and due to their heterogenous nature involving wired, wireless, and mobile nodes, synchronization has again come into play. In this work, we have studied contact synchronization and handling, which is an important...
This special issue is devoted to recent research findings in the field of Cyber Physical Systems. The special issue follows “The IEEE 26th International Conference on Advanced Information Networking and Applications (AINA-2012)”, held at the Fukuoka Institute of Technology, Fukuoka, Japan, March 26–29, 2012.
A Mobile Ad hoc Network (MANET) is a set of mobile wireless devices, which communicate by forwarding packets for each other. These autonomous devices act as routers and as end nodes as well. The communication from one node to another can happen in many routes with different number of hops. Because of mobility these routes change dynamically. Recent application of MANETs have strong Quality of Service...
P2P systems have shown useful to many types of distributed systems due to their features of efficient direct communication among peers. Although initially motivated by the need for efficient file sharing among large amount of peers, P2P techniques have found wide applicability to many domains within large scale distributed systems such as solving complex problems from science and engineering, data...
In this work, we evaluate the performance of DYMO routing protocol in different VANET scenarios. We investigate the effect of density and speed in the performance of communication between nodes using different node densities and speeds for the same simulation area. As evaluation metric, we use Packet Delivery Ratio (PDR). The simulation results have shown that with the increasing of the nodes density...
Vehicular Ad-hoc Networks (VANETs) represent a rapidly emerging, particularly challenging class of Mobile Ad-hoc Networks (MANETs). VANETs are expected to be massively deployed in upcoming vehicles, because their use can improve the safety of driving and makes new forms of inter-vehicle communications possible as well. Because they are characterized of high mobility and dynamic topology change, congestion...
Wireless networks are continuing to attract attention for their potential use in several fields such as ad-hoc networks, sensor networks, mesh networks, and vehicular networks. Vehicular Ad-hoc networks (VANETs) are expected to be massively deployed in upcoming vehicles, because their use can improve the road safety and comfort. The effective implementation of vehicular communication could improve...
Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. In this paper, we investigate packet loss, routing loss and transport loss in mobile Wireless Sensor Networks (WSNs) considering AODV protocol and different radio models. We compare the simulation results...
In this work, we carry out a comparison evaluation for mobile and static sensor nodes in Wireless Sensor Networks (WSNs) using TwoRayGround propagation model and different protocols. We consider packet-loss and delay metrics to evaluate the performance of WSN. The simulation results have shown that for WSN with mobile sensor nodes, the delay is better than static sensor nodes. In case of static sensor...
Synchronization protocols have been widely investigated in distributed systems aiming to achieve real time and scalable properties. With the fast development of large scale distributed systems and due to their heterogenous nature involving wired, wireless and mobile nodes, synchronization has come again to play. In this work we have studied the contact synchronization and handling, which is an important...
In VANETs and MANETs, the topology of the network changes very often, therefore implementation of efficient routing protocols is very important problem. In this paper, we investigated the good put of AODV, OLSR and DYMO routing protocols using CAVENET (Cellular Automaton based Vehicular Network). The simulation results show that the number of hops for DYMO is smaller than AODV and bigger than OLSR...
Sensor networks are sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. In this paper, we present a comparison evaluation for mobile and static sensor nodes in Wireless Sensor Networks (WNSs) considering TwoRayGround and Shadowing propagation models. The simulation results have...
Event detection is a major issue for applications of wireless sensor networks. In order to detect an event, a sensor network has to identify which application-specific incident has occurred based on the raw data gathered by individual sensor nodes. Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment...
Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment and in our physical and cyber infrastructure. In this paper, we propose a sensor network with mobile and static sensor nodes set-up for performing tasks like sensing a phenomenon or monitoring a region. We investigate how the sensor network performs...
In VANETs and MANETs, the topology of the network changes very often, therefore implementation of efficient routing protocols is very important problem. In MANETs, the Random Waypoint (RW) model is used as a simulation model for generating node mobility pattern. On the other hand, in VANETs, the mobility patterns of nodes is restricted along the roads, and is affected by the movement of neighbour...
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