Mohamed Ould Cheikh

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This paper tackle the problem of coverage in IEEE 802.11 in mesh mode. Instead of omnidirectional coverage, we propose to use directional coverage that can increase the distance between the nodes. The use of directional antenna have two main advantages. The first is to increase the performance of QoS of considered services. The second is that using(More)
Wireless mesh network (WMNs) are an emerging technology, presented mainly as a way to build a multi-hop network based on an infrastructure. IEEE has developed a draft 802.11s describing the enhancement of the IEEE 802.11 for mesh networks. This new standard aims to create a new wireless configuration that manages the topology, the quality of radio link and(More)
The most widely used standard for wireless networks is the IEEE 802.11. In 802.11, dense deployment of Access Points (APs) is needed to meet customers' demands. The installation of multiple access points is expensive and not convenient because of Ethernet wiring from access points to backhaul network access modem, hub, etc. Wireless mesh network (WMN) is an(More)
Recently, the directional antenna has received intensive research due to its variety of potential benefits for wireless communication systems, especially in the context of ad hoc networks. Nodes equipped with this type of antennas can communicate simultaneously without interference, and potentially establish links between them with less routing hops. This(More)
WIMAX networks are aim to provide services with high throughput (up to 70 Mbps) and with a large coverage (up to 50 Km) To ensure QoS architecture has been designed and in the IEEE 802.16.e amendment they introduce the service differentiation by 4 service classes (UGS, rtPS, nrtPS and BE). Add to this an Admission control (AC) has been specified to avoid(More)
The emergence and success of IP networks make the development of new services like voice, multimedia or web services possible. One of the major problem of these type of application is that IP networks is not designed to provide Quality of Service (QoS) in an end to end architecture. Thus the performance evaluation of these applications is important to(More)
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