Mourad Elhadef

Learn More
Dependable mobile ad-hoc networks are being designed to provide reliable and continuous service despite the failure of some of their components. One of the basic building blocks that have been identified for such fault tolerant systems is the failure detection service which aims at providing some information on which hosts have crashed. In this paper, we(More)
The design of large dependable multiprocessor systems requires quick and precise mechanisms for detecting the faulty nodes. The problem of system-level fault diagnosis is computationally difficult and no efficient and generic deterministic solutions are known, motivating the use of heuristic algorithms. In this paper, we show how artificial immune systems(More)
This paper considers the problem of self-diagnosis of wireless mesh networks (WMNs) and mobile ad-hoc networks (MANETs) using the comparison approach. In this approach, the network consists of a collection of n independent heterogeneous mobile or stationary hosts interconnected via wireless links, and it is assumed that at most sigma of these hosts are(More)
This paper deals with the problem of self-diagnosis of multiprocessor and multicomputer systems. We consider the generalized comparison model in which jobs are assigned to pairs of nodes (processors) and the results are compared by the system's nodes themselves (self-diagnosis). The agreements and disagreements among the nodes are the basis for identifying(More)
The system-level fault diagnosis problem aims at answering the very simple question "Who's faulty and who's fault-free?", in systems known to be diagnosable. In this paper, we answer such a question using neural networks. Our objective is to identify faulty nodes based on an input syndrome that has been generated using the asymmetric comparison model. In(More)
We consider the fault identification problem, also known as the system-level self-diagnosis, in multiprocessor and multicomputer systems using the comparison approach. In this diagnosis model, a set of tasks is assigned to pairs of nodes and their outcomes are compared by neighboring nodes. Given that comparisons are performed by the nodes themselves,(More)
In emergency/rescue applications mobile ad-hoc networks (MANETs) play an important role as a self-organizable and rapidly deployable infrastructure. Consequently, reliable break MANETs are necessary for this type of applications. One of the key problem we are considering in this paper is the identification of faulty mobile hosts in MANETs. Current(More)