Browsing by Author "Djellab, Natalia"

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    A critical review of quality of service models in mobile ad hoc networks
    (Inderscience Enterprises Ltd, 2019) Bouchama, Nadir; Aïssani, Djamil; Djellab, Natalia; Nouali-Taboudjemat, Nadia
    Quality of service (QoS) provisioning in mobile ad hoc networks (MANETs) consists of providing a complex functionality in a harsh environment where resources are scarce. Thus, it is very challenging to build an efficient solution to address this issue. The proposed solutions in the literature are broadly classified into four categories, namely: QoS routing protocols, QoS signalling, QoS-aware MAC protocols and QoS models, which are the main concern of our study. The contribution of this paper is threefold: Firstly, we propose a set of guidelines to deal with the challenges facing QoS models design in ad hoc networks. Secondly, we propose a new taxonomy for QoS models in ad hoc networks. Finally, we provide an in-depth survey and discussion of the most relevant proposed frameworks.
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    Extending the AODV Protocol to Provide Quality of Service in Mobile Ad Hoc Networks
    (2011-04-24) Bouchama, Nadir; Nouali-Taboudjemat, Nadia; Aïssani, Djamil; Djellab, Natalia; Maouchi, Houari
    Voice communication is the most needed application in disaster management. However, without good QoS tuning, its performance can be poor. QoS routing is one of the most important building blocks in any given QoS solution. To conceive a QoS routing protocol for ad hoc networks, we can either conceive anew protocol from scratch, or extend an existing best effort protocol like AODV (Ad-hoc On- Demand Distance Vector Routing Protocol). The main advantage for the second approach is its easiness. In this paper, we propose a new QoS routing protocol that can satisfy multimedia application requirements in ad hoc networks. Thereafter, we present and discuss simulation results obtained under the NS-2 simulator for a VoIP application