T he advent of mobile telecommunication systems has brought the term user mobility to next-generation telecommunication network research and design. User mobility implies two things: terminal mobility—the ability of the network to locate a mobile terminal—and personal mobility— the ability of users to access defined services from any terminal in the network, while maintaining their personal env...

Personal mobility (PM) is one of key issues in realizing emerging third generation mobile communication systems such as International Mobile Telecommunication 2000 (IMT2000) and it can be realized through universal personal telecommunication (UPT) service. A PM management scheme is considered in order to manage PM information related to UPT users for incall registration/deregistration, incall r...

This paper presents practical integration of enterprise Unified Communications system with telecommunication service provider Service Delivery Platform. System implemented in Orange Labs, enables sending SMS and USSD messages geo-localizing of user mobile terminal directly from user interface of Unified Communications system. This article presents also statement regarding further investigations...

A telecommunication system like an ISDN network comprises a great variety of software components. It includes software for switches, the terminal equipment (like a simple telephone) but also for the management of resources and the provision of high level services like time dependent call forwarding. Software for telecommunication systems like other software must be fast, robust and easy to main...

3 generation systems such as UMTS will support the enrichment of the traditional service provision schemes via partnering of mobile network operators with other players in the marketplace, such as value added service providers and content providers. These partnerships will raise the bar on service provision requirements as well as roaming configurations. Roaming requirements for future mobile t...

Personal mobility (PM) is one of the key issues in realizing personal communications service (PCS) in emerging thirdgeneration mobile communication networks such as International Mobile Telecommunication 2000 (IMT-2000). It can be realized through universal personal telecommunication (UPT) service. Two PM management schemes are proposed to manage PM information related to UPT users for incoming...

This paper investigates the use of multi-terminal HVDC systems to provide primary frequency support to connected AC networks via coordinated DC voltage manipulation. Control schemes for multi-terminal HVDC systems to allow redistribution of active power, based on the idea of “power priority” are proposed. Inertia response from DC connected large offshore wind farms can also be incorporated base...

Telecommunication networks of known reliability are frequently upgraded as traffic patterns change. In this paper we will present theorems and an algorithm which could be used to solve the problem of adding a single link of known failure probability to a network such that the marginal increase in 2-terminal reliability is maximized. The theorems presented will subsequently be used to derive upp...