Doru Todinca

Learn More
– This work proposes a new admission control algorithm for GPRS/EGPRS networks. The cellular networks are evolving from the 2 nd generation voice systems to 3 rd generation data and voice systems, and the classical admission control methods used for voice systems cannot efficiently cope with the new problems posed by the complex nature of data traffic and(More)
The goal of this paper is to investigate the efficiency of different algorithms used for resource allocation in data transfer over EGPRS networks. The focus is on the efficiency during congested periods in order to ensure reduced file transfer delay. A number of algorithms are presented for the resource allocation, and some generic mathematical results are(More)
In the component based software engineering approach, a software system is viewed as an assembly of reusable independently developed components. In order to produce automated tools to support the selection and assembly of components, rigorous specifications of components and performant retrieval and selection strategies based on these specifications are(More)
This article proposes an approach for including user preferences and quality of service characteristics in the selection process of services. Our approach consists of a Domain ontology for the service description vocabulary, and a trader that facilitates user-preference-based service selection, combining imperfect service matching and ranking algorithms.(More)
Recent technological improvements have made the deployment of small, inexpensive, low-power devices (nodes), which are capable of local processing and wireless communication, a reality. Such structure is called Wireless Sensor Network (WSN). Nowadays, a WSN node may include complex sensing devices like video cameras. This paper proposes a new routing(More)
In the heterogeneous mobile networks of the future, the mobile users, equipped with multi-mode terminals, will be able to select the radio network that suits best the needs of the mobile user and of the applications running on the mobile terminal. In this work we propose a novel network selection algorithm based on fuzzy inference. Our algorithm permits a(More)
Many of the admission control strategies for cellular data networks proposed in the literature allow the network operator to use different policies, depending on the network load, the number of users from each quality of service class, etc. Each policy is applied in a certain region, the regions being separated by thresholds. Those approaches suffer from a(More)