Papers by el fatmi el fatmi
of 5 Resources Reservation Satisfying QoS Constraints for Ad Hoc Networks
For the last several years, there has been a significant increase of interest in supporting quali... more For the last several years, there has been a significant increase of interest in supporting quality of service (QoS) constraints in Mobile Ad Hoc Networks (AHNs). AHNs include mobile nodes with limited capacities and communication resources. This specificity makes existing solutions for wired networks little suitable and a broad range of novel approaches have been studied. In this paper we propose a QoS reservation mechanism for AHNs, called QSRR. The mechanism is targeted for sources requiring a bandwidth allocation. It is based on the knowledge of the bandwidth requirements of the neighbours of a node and the interfering nodes in the cover area of each node. Our proposition uses a traffic classification and requires available bandwidth estimation definition. The advantages of this proposition are shown thanks to some simulation results that are detailed in the end of this paper.
Ad hoc networks (AHNs) include mobile nodes with limited communication resources on which the pat... more Ad hoc networks (AHNs) include mobile nodes with limited communication resources on which the path selection is usually made according to a best effort strategy. Today, AHNs are facing a new challenge: a QoS routing based on bandwidth and delay requirements. Hence, we are interested in this paper by a routing QoS oriented in AHNs. One of the major contributions of this paper concerns the proposition of a novel QoS routing protocol based on delay and bandwidth requirements and called QSDB. The aim of this protocol is to support multiple-metric routing criteria concerning delay and bandwidth and to respond in a fast manner to changes in topology and/or quality of service conditions. Our proposition is based on traffic classification and requires metrics definition allowing the expression of the QoS requirements in order to provide differentiated routing according to traffic classes.
Ad Hoc mobile Network (AHNs) may include a plurality of mobile nodes each including a wireless co... more Ad Hoc mobile Network (AHNs) may include a plurality of mobile nodes each including a wireless communications device with limited communication resources. Achieving QoS (Quality of Service) in AHNs has been an important research topic in the last years. Consequently, we are interested in this paper by the proposition of an admission control mechanism QoS oriented in AHNs based on traffic classification. One of the major contributions of this paper concerns the proposition of a novel contention resolution mechanism allowing an admission control oriented service differentiation mechanism called DS_CAP for Differentiation Service Control Admission Protocol. We also give simulation results showing the advantages of our mechanism.
Ad hoc networks (AHNs) include mobile nodes with limited communication resources on which the pat... more Ad hoc networks (AHNs) include mobile nodes with limited communication resources on which the path selection is usually made according to a best effort strategy. Today, AHNs are facing a new challenge: a QoS routing based on bandwidth and delay requirements. The importance of this challenge makes this issue focused by several researchers. Consequently, we are interested in this paper by a routing QoS oriented in AHNs. One of the major contributions of this paper concerns the proposition of a novel layered QoS architecture and a contention resolution mechanism allowing a QoS routing definition. Our proposition is based on traffic classification and requires metrics definition allowing the expression of the QoS requirements in order to provide differentiated routing according to traffic classes.
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Papers by el fatmi el fatmi