Abdesselem Kortebi

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This paper describes and evaluates the performance of a modified deficit round robin scheduler called PDRR (for Priority DRR). In conjunction with per-flow admission control, PDRR allows the realization of implicit service differentiation where streaming and elastic flows are assured adequate performance without the need for explicit class of service(More)
Despite its well-known advantages, per-flow fair queueing has not been deployed in the Internet mainly because of the common belief that such scheduling is not scalable. The objective of the present paper is to demonstrate using trace simulations and analytical evaluations that this belief is misguided. We show that although the number of flows <i>in(More)
An enhanced flow-aware Internet is arguably a more effective means of ensuring adequate performance than implementing the complex standardized QoS architectures. This flow-aware network would provide flow-level performance guarantees for real time and data applications by implementing per-flow fair queueing and by limiting the impact of overload through(More)
In this paper, we investigate architectural and practical issues related to the setup of a broadband home network solution. Our experience led us to the consideration of a hybrid, wireless and wired, Mesh-Network to enable high data rate service delivery everywhere in the home. We demonstrate the effectiveness of our proposal using a real experimental(More)
. The time-varying capacity links, such as wireless links and power line communication (PLC) links, which are integrated to emergent connectivity devices of Home Networks (HNs) require QoS mechanisms to protect sensitive and critical HN flows. In this paper, we couple the “Iperf in lightweight TCP mode” probing technique (developed in a previous work to(More)
A number of studies show that most of current probing tools, for available bandwidth, exhibit low accuracy, and slow convergence in Home Networks. Some reasons of this behavior include the high queuing variability of probing flows, which is induced by multiple-access mechanisms, time-variant capacity links of hybrid paths, and the instability of beta(More)
This paper aims at modeling video stream applications with structured data and multiple clocks. Multi-Periodic Process Networks (MPPN) are real-time process networks with an adaptable degree of synchronous behavior and a hierarchical structure. MPPN help to describe stream-processing applications and deduce resource requirements such as parallel functional(More)