This thesis presents the LiquiMedia operating system architecture. LiquiMedia is specialized to schedule multimedia applications. Because they generate output for a human observer, multimedia applications such as video games, video conferencing and video players have both unique scheduling requirements and unique allowances: a multimedia stream must synchronize sub-streams generated for differe...

The Connection Admission Control(CAC) is part of ATM traffic control and consists of a framework that optimizes network usage while ensuring the desired QoS for the services. The CAC approach we propose for ATM networks is based on a effective bandwidth allocation strategy. This paper addresses the effective bandwidth computation based on a probabilistic model for cell level QoS and call level ...

We summarize our current research on the applications of computational intelligence in asynchronous transfer mode networks. Our goal is to improve network performance (call blocking, utilization) through “intelligent” call admission control. We discuss the need for a methodology of applying computational intelligence in this environment.

In this paper, we show that the expected workload and the expected waiting time in (max,+) linear system under a single input sequence is multimodular. We use this result to construct the optimal deterministic admission control in the (max,+) system under rate constraints. Gaujal is a member of a common project between CNRS, UNSA and INRIA. Contrrle d'admission dans les graphes d''vnements stoc...

InWiMAXCall admission control (CAC) plays a vital role in providing the desired quality of service.It is such a provisioning strategy to limit the number of incoming connections into the networks in order to reduce the network congestion and call dropping. Over the last few years, a significant number of call admission control (CAC) schemes have been anticipated for WiMAXnetwork. In this paper,...

This paper considers the support of real-time applications to mobile hosts in an Integrated Services Packet Network. We have proposed a service model for mobile hosts that can support adaptive applications which can withstand wide range of available bandwidth, as well as applications which require mobility independent service guarantees. We describe an admission control scheme and a reservation...

The third wireless network generation (3G) aims to provide fast Internet access with quality of service (QoS) guarantees, especially to multimedia applications. UMTS (Universal Mobile Telecommunication System) is a kind of 3G networks. To provide QoS, the network must use an efficient admission control mechanism. This mechanism needs to prioritize network access to critical classes of applicati...

In this paper, we propose a scalable reservation protocol and admission control algorithm, DEAC, that combines features of both endpoint admission control and Diff-Serv architectures. We are able to make hard guarantees to individual flows without per-flow management in the network core. By allowing flows to probe the network for available bandwidth and routers to control the amount of simultan...

Wireless sensor networks are expected to provide reliable event sensing at the network sink for the longest possible time. These requirements are somewhat conflicting, esp. in the case of networks that use medium access protocols based on the ubiquitous CSMA-CA mechanism, where collisions may substantially affect transmission efficiency and thus impair network lifetime. This is the case with be...