Deutsche Telekom

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.

Fall and emergency detection with mobile phones

Abstract: In this demo, we present an application for mobile phones which can monitor physical activities of users and detect unexpected emergency situations such as a sudden fall or accident. Upon detection of such an event, the mobile phone can inform a designated center (by automatically calling or sending message) about the incident and its location. This can facilitate and speed up recovery and help process especially if the user is alone or the accident has happened in a deserted place. Such an application can be particularly useful for elderly people or people with physical and movement disabilities. The application operates based on analysis of user movements using data provided by accelerometers integrated in mobile phones.

On expressing networks with flow transformations in convolution-form

Abstract: Convolution-form networks have the property that the end-to-end service of network flows can be expressed in terms of a (min,+)-convolution of the per-node services. This property is instrumental for deriving end-to-end queueing results which fundamentally improve upon alternative results derived by a node-by-node analysis. This paper extends the class of convolution-form networks with stochastic settings to scenarios with flow transformations, e.g., by loss, dynamic routing or retransmissions. In these networks, it is shown that by using the tools developed in this paper end-to-end delays grow as O(n) in the number of nodes n; in contrast, by using the alternative node-by-node analysis, end-to-end delays grow as O(n2).

Representing Emotions and Related States in Technological Systems

Abstract: In many cases when technological systems are to operate on emotions and related states, they need to represent these states. Existing representations are limited to application-specific solutions that fall short of representing the full range of concepts that have been identified as relevant in the scientific literature. The present chapter presents a broad conceptual view on the possibility to create a generic representation of emotions that can be used in many contexts and for many purposes. Potential use cases and resulting requirements are identified and compared to the scientific literature on emotions. Options for the practical realisation of an Emotion Markup Language are discussed in the light of the requirement to extend the language to different emotion concepts and vocabularies, and ontologies are investigated as a means to provide limited “mapping” mechanisms between different emotion representations.

Location of origin of measuring data for radio characteristics of cellular network

Abstract: The measured values from the interface (Abis1) are recorded with a protocol analyser (2) and stored in a memory device or a database (3), so that they can be selected by the software (4) and sorted in the measuring vector bank (5). From the operation and maintenance controller (OMC) (6) the neighbourhood list of the server base station can be determined and stored in a memory device or database (7). From the list can be obtained the location, the elevation and the land utilisation data (8, 9). From the field strength unit (10) can be deduced the prediction data (11) and the predicted reception strengths for the server and neighbouring stations (20,...), together with the vector data (12, 12). The steps in the calculation involve the determination of the transmit times for signals in the cellular network, the determination of the transmitter parameters for at least one stationary transmitting and receiving units, and the prediction of the transmitting parameter.

Method and switching device for billing in telecommunications networks

Abstract: An administratively optimized process and/or system for metering communication tariffs which—with the aid of a flat-rate-calculating computer, which is connected to an associated exchange for customer terminals—carries out automatic administratively optimized metering of communication tariffs. Such automatic, administratively optimized metering of communication tariffs is suitable both for digitized, as well as for analog communication networks, implemented as wire-bound, radio-based or laser-assisted, terrestrial or satellite networks. Each terminal is connected to a communication meter which is sealed or otherwise protected against manipulation and can be read off using telemetry or, when prompted, by the customer using a special meter-reading card. The flat-rate-calculating computer processes the information pertaining to consumed volumes of information in three ways. First, it compares the current values with the specified process breadths and, if process alarm limits have been exceeded, generates a process alarm; it checks the current consumption values for a possible trend development and generates an indicator alarm in response to a limit-value exceeding trend. It stores the charge information, process behavior and alarms in a system memory for documentation purposes. At a predetermined time or if there is a special need, it calculates a new flat-rate value which corresponds to the changed communication behavior of the particular customer or group of customers. For the purpose of control, the flat-rate-calculating computer is connected to an operator terminal having a record printer.