Szilveszter Nádas

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control radio scheduler queues in Node B. In this paper we propose an algorithm that also provides congestion control in the transport network. The performance analysis concentrates on transport network limited scenarios and shows that the algorithm can achieve high end-user perceived throughput, while maintaining low delay and loss in the transport(More)
In this paper we propose a Connection Admission Control (CAC) algorithm to provide Quality of Service (QoS) in UMTS Terrestrial Radio Access Networks (UTRAN). In UTRAN, the main QoS requirement is to ensure low packet delays. The CAC algorithm works with priority scheduling , which is used for QoS differentiation. We give a detailed investigation on the(More)
The purpose of this study was to determine the risk factors predisposing to an obstetric fracture, and their long-term outcome. We reviewed 28 obstetric fractures treated in the County of Vaud, Switzerland, between 1976 and 1989. There were 12 fractures of long bones, 10 clavicles and 6 depressed skull fractures. The belief that obstetric fractures occur in(More)
Computed tomography (CT) is the gold standard for exact delineation of inflammatory sinus disease, especially before endoscopic surgical treatment. Thermoluminescent dosimetry studies were performed on a Rando humanoid phantom to compare radiation doses used in sinus examinations. Radiation doses were determined for lens, thyroid gland, condylar marrow and(More)
This is a position paper regarding the role of middleboxes and mid-dlebox layer in an evolved protocol stack. The focus of the paper is on the requirement of cellular networks, but the statements are not limited to cellular systems. The paper describes relevant properties of cellular networks and discusses the related roles of the middleboxes. It addresses(More)
—The introduction of High Speed Uplink Packet Access (HSUPA) greatly improves achievable uplink bitrate but it presents new challenges to be solved in the radio access network. In the transport network, bandwidth reservation for HSUPA is not efficient and TCP cannot efficiently resolve congestion because of lower layer retransmissions. This paper proposes(More)
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