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Institution

Deutsche Telekom

CompanyWelwyn 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.


Papers
More filters
Proceedings ArticleDOI
M. Roth1
01 Apr 2007
TL;DR: An analytical framework is presented to study the self-adaptive behavior of probabilistic routing protocols for computer networks, based on a Markov chain analysis, which can be estimated without resorting to expensive Monte-Carlo simulation of the whole system.
Abstract: An analytical framework is presented to study the self-adaptive behavior of probabilistic routing protocols for computer networks. Such soft routing protocols have attracted attention for delivering packets more reliably, robustly, and efficiently than conventional deterministic approaches. Efficient global operating parameters can be estimated without resorting to expensive Monte-Carlo simulation of the whole system. Key model parameters are routing sensitivity and routing threshold/noise, which control the "randomness" of packet routes between source and destination, and a metric estimator. Global network characteristics are estimated, including steady state routing probabilities, average path length, and path robustness. The framework is based on a Markov chain analysis. Individual network nodes are represented as states. Standard techniques are used to find primary statistics of the steady state global routing pattern, given a set of link costs. The use of packets to collect information about, or "sample," the network for new path information is also reviewed. How the network sample rate influences performance is investigated.

15 citations

Patent
28 Dec 2000
TL;DR: In this paper, a mobile phone has a scanner or barcode reader, integral with phone or detachable with connecting cable or infrared interface, which provides choice of scanner and its functions for text recognition, bar code recognition and symbol recognition.
Abstract: Mobile phone has scanner or barcode reader, integral with phone or detachable with connecting cable or infrared interface. Phone menu provides choice of scanner and its functions for text recognition, bar code recognition and symbol recognition. Mobile phone has scanner or barcode reader, integral with phone or detachable with connecting cable or infrared interface. Phone menu provides choice of scanner and its functions for text recognition, bar code recognition and symbol recognition. Handwritten or printed text is scanned in and integral optical character recognition software, on SIM or permanent in phone, recognizes characters. Recognized text is shown on phone display, confirmed by user and transmitted. Set text converted to bar code is scanned by bar code reader integrated in phone to transmit specific messages.

15 citations

Patent
14 Aug 2003
TL;DR: In this article, a method for notification and ordering of electronic messages, especially voicemail and text messages to a phone, is presented, in a first step, messages received by the message receiving system are analyzed with voicemail messages first being converted into text.
Abstract: Method for notification and ordering of electronic messages, especially voicemail and text messages to a phone. According to the method, in a first step, messages received by the message receiving system are analyzed with voicemail messages first being converted into text. In a second step the messages are prioritized based on the analysis. Finally the messages are provided to the user based on the priority criteria. The invention also relates to software and a computer system for implementation of the inventive method.

15 citations

Patent
Ingo Breunig1, Karsten Buse1, Jens Kiessling1, Bastian Knabe1, Rosita Sowade1 
29 Oct 2008
TL;DR: In this paper, a method for producing an electromagnetic carrier wave in the frequency range between 0.1 and 10 terahertz that is suitable for the wireless transmission of data is presented.
Abstract: A method for producing an electromagnetic carrier wave in the frequency range between 0.1 and 10 terahertz that is suitable for the wireless transmission of data includes generating, by an electromagnetic pump wave, at least two mixing waves with a defined frequency difference, the pump wave being configured to constitute one of the mixing waves; and producing an electromagnetic carrier wave by frequency mixing the mixing waves.

15 citations

Proceedings ArticleDOI
13 Mar 2006
TL;DR: In this article, the problem of approximating the number of differences between sets held on remote hosts using minimum communication is considered, and a heuristic solution based on the counting Bloom filter is proposed.
Abstract: We consider the problem of approximating the number of differences between sets held on remote hosts using minimum communication. Efficient solutions to this problem are important for streamlining a variety of communication sensitive network applications, including data synchronization in mobile networks, gossip protocols and content delivery networks. Using tools from the field of interactive communication, we show that this problem requires about as much communication as the problem of exactly determining such differences. As a result, we propose a heuristic solution based on the counting Bloom filter. We provide analytic bounds on the expected performance of our protocol and also experimental evidence that they can outperform existing difference approximation techniques.

15 citations


Authors

Showing all 3475 results

NameH-indexPapersCitations
Jörg Müller6740715282
Anja Feldmann6734017422
Yuval Elovici6254414451
Lior Rokach5535719989
Pan Hui5246817724
Hartmut G. Roskos504349643
Wolfgang Haase5062411634
Shlomi Dolev4851610435
Jean-Pierre Seifert452987516
Stefan Schmid455619088
Fabian Schneider441647437
Karsten Buse433947774
Tansu Alpcan432937840
Florian Metze423187148
Christian Bauckhage422858313
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20232
20227
202139
202061
201984
201897