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The problem of burst losses in OBS networks has an impact on the service quality perceived by end users. In order to guarantee certain level of Service Quality (QoS) in terms of burst losses, wavelength resources have to be dimensioned properly. In this paper, we address the problem of the Virtual Topology (VT) design that concerns the establishment of explicit routing paths and the allocation of...
Modified optimized link state routing (M-OLSR) has been developed for adaptability in wireless mesh networking (WMNs) scenarios and exhibits a much better scalability of traffic load and mobility in sparse and dense network. The protocol uses some refresh timers for periodic updates of link information and for subsequent topology maintenance. In this paper, we investigate the impact of configuring...
Proactive routing in MANETs induces high signaling overhead. Increasing the routing period size, while it reduces such an overhead, prevents to correctly track frequent changes in the topology and impacts the validity of routing as time goes farther from the start of the routing period. Routes' validity plays a central leveraging mission to enhance network performances as forwarding through incorrect...
Routing in mobile ad hoc networks (MANETs) is central to their proper functioning. Mobility in such networks makes the routing a real challenging task. Routes validity plays a central leveraging mission to enhance network performances. Forwarding through incorrect routes not only results in traffic wandering inside the network without ever being able to be delivered to their ultimate destinations...
In this paper we examine the behavior of ad hoc networks through simulations, using different routing protocols and various topologies. We examine the difference in performance, using a CBR application, with packets of different size through a variety of topologies, showing that the way nodes are placed in a network has an impact in networks performance. We show that the choice of routing protocol...
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