János Harmatos

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I. ABSTRACT Building new UMTS (Universal Mobile Telecommunica-tion Systems) based networks seems to be on time. Nowadays the UMTS network design related problems are moving to the interconnection of Radio Network Controllers (RNC), placement of Media Gateways (MGw) and planning of the core network topology. This new area of UMTS network design is studied in(More)
— Multiprotocol Label Switching technology provides efficient means for controlling the traffic of IP backbone networks and thus, offers performance superior to that of traditional Interior Gateway Protocol (IGP) based packet forwarding. However, computation of explicit paths yielding optimal network performance is a difficult task; several different(More)
The paper addresses the IP/MPLS network cost optimization problem of selecting localizations of nodes and links, combined with links' dimensioning. As MPLS is flexible in routing demands' flows through the network, the considered problem is similar to the classical NP-hard topological design problems dealt with in the past, mostly in the context of the road(More)
— In this paper, the application questions of OSPF (Open Shortest Path First) routing protocols in the all–IP based protected UMTS (Universal Mobile Telecommunications System) access networks is investigated. The basic problem here is how the OSPF administrative weights should be adjusted in an adequate way, resulting near–optimal overall network(More)
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