Institution
Deutsche Telekom
Company•Welwyn Garden City, United Kingdom•
About: Deutsche Telekom is a company organization based out in Welwyn Garden City, United Kingdom. It is known for research contribution in the topics: Telecommunications network & Terminal (electronics). The organization has 3473 authors who have published 5208 publications receiving 65429 citations. The organization is also known as: DTAG & German Telecom.
Topics: Telecommunications network, Terminal (electronics), The Internet, Radio access network, Network packet
Papers published on a yearly basis
Papers
More filters
•
16 Jan 2008TL;DR: In this article, a method for the controlled querying of information stored in a structured format in a data processing system using a dialog system is presented, which includes: providing at least one first ontology configured to store information in structured format.
Abstract: A method for the controlled querying of information stored in a structured format in a data processing system using a dialog system includes: providing at least one first ontology configured to store information in a structured format; and providing at least one input grammar in the dialog system configured to analyze user inputs as a function of the at least one first ontology.
15 citations
•
10 Apr 2002TL;DR: In this article, a method for digital transmission using an AM transmitter includes operating an output stage of the AM transmitter in a linear mode and correcting the supply voltage of the output stage in the linear mode as a function of an instantaneous drive so as to improve efficiency.
Abstract: A method for digital transmission using an AM transmitter includes operating an output stage of the AM transmitter in a linear mode and correcting the supply voltage of the output stage in the linear mode as a function of an instantaneous drive so as to improve efficiency. The correcting is performed by operating the modulator of the AM transmitter as a switched-mode power supply unit so as to deliver a corrected supply voltage to the output stage, and scanning an envelope of a complex modulated data signal so as to control the correcting. A time constant during the scanning of the envelope enables immediate following of a rise in the envelope. The complex modulated data signal is delayed after the scanning so as to perform the correcting during the delay and prevent an overdriving of the output stage.
15 citations
•
03 Mar 2011TL;DR: In this article, a controller determines a micro-flowset routing for the set of flows, the micro flowset routing defining which of a set of directed links connecting a plurality of routing devices are used to route each of the flows from the respective ingress routing device to the respective egress routing device.
Abstract: A method for routing-assisted traffic monitoring includes providing a set of flows, each flow having an associated ingress routing device and an associated egress routing device. A controller determines a micro-flowset routing for the set of flows, the micro-flowset routing defining which of a set of directed links connecting a plurality of routing devices are used to route each of the flows from the respective ingress routing device to the respective egress routing device. The controller transmits flow information to at least a first routing device of the plurality of routing devices according to the micro-flowset routing, the flow information defining which of the set of directed links are to be used to route at least one flow entering the first routing device to a second routing device of the plurality of routing devices.
15 citations
•
27 Jan 1995TL;DR: In this paper, anordnung zur Ermittlung von Nutzungsgebuhren fur Verkehrswege und/oder Verkehrflachen werden mit Hilfe einer in einem Fahrzeug befindlichen Einrichtung aufgrund von Positionsdaten and Tarifdaten Nutzingsgebhren berechnet and uber ein Datenubertragungssystem an eine Zentralstelle ubertragen mit der Moglichkeit
Abstract: Bei einem Verfahren und einer Anordnung zur Ermittlung von Nutzungsgebuhren fur Verkehrswege und/oder Verkehrsflachen werden mit Hilfe einer in einem Fahrzeug befindlichen Einrichtung aufgrund von Positionsdaten und Tarifdaten Nutzungsgebuhren berechnet und uber ein Datenubertragungssystem an eine Zentralstelle ubertragen mit der Moglichkeit einer Uberprufung der ordnungsgemasen Zahlung .
15 citations
••
18 Mar 2008TL;DR: A testbed specially built to investigate the user perception of mobility in NGNs, using the Mobisense setting, which allows the migration of VoIP calls across heterogeneous wireless networks, and simulation of user mobility patterns while roaming between networks.
Abstract: The convergence of different commercial wireless technologies poses new opportunities for always-on connectivity and nearly ubiquitous access in Next Generation Networks (NGNs) The proposed integrated virtual access platform frees users from the fixed locations, and allows them to enjoy services while they are on the move However, the possibility to seamlessly roam (on demand) across wireless technologies is a must in NGNs Even though a wide body of research has been done on seamless mobility, a thorough analysis of user perception of this phenomenon is required in order to successfully design, and further improve, always-on services and mobility management solutions This paper describes a testbed specially built to investigate the user perception of mobility in NGNs The Mobisense testbed enables the mapping of user experience to network conditions, focusing on phenomena caused by a user roaming across diverse wireless technologies and the impact on applications and services The Mobisense setting helps in the analysis of IP services, in particular experiments were done to study user perceived quality of Voice over IP in NGNs This testbed allows (1) the migration of VoIP calls across heterogeneous wireless networks, (2) network application data tracking, (3) simulation of user mobility patterns, (4) and audio codec changeovers while roaming between networks
15 citations
Authors
Showing all 3475 results
Name | H-index | Papers | Citations |
---|---|---|---|
Jörg Müller | 67 | 407 | 15282 |
Anja Feldmann | 67 | 340 | 17422 |
Yuval Elovici | 62 | 544 | 14451 |
Lior Rokach | 55 | 357 | 19989 |
Pan Hui | 52 | 468 | 17724 |
Hartmut G. Roskos | 50 | 434 | 9643 |
Wolfgang Haase | 50 | 624 | 11634 |
Shlomi Dolev | 48 | 516 | 10435 |
Jean-Pierre Seifert | 45 | 298 | 7516 |
Stefan Schmid | 45 | 561 | 9088 |
Fabian Schneider | 44 | 164 | 7437 |
Karsten Buse | 43 | 394 | 7774 |
Tansu Alpcan | 43 | 293 | 7840 |
Florian Metze | 42 | 318 | 7148 |
Christian Bauckhage | 42 | 285 | 8313 |