Deutschetelekom Ag

Nippon Telegraph and Telephone Corporation

Huawei Technologies Co., Limited

Werner Weiershausen

Ralph Leppla

Matthias Gunkel

Malte Schneiders

Sascha Vorbeck

Yutaka Miyamoto

Yoshiaki Kisaka

Akira Hirano

Wolfgang Dultz

Hans-Joerg Kolbe

Leonid Alexseevich Beresnev

Thomas Haag

Heidrun Schmitzer

Joachim Vobian

Erna Frins

Michael Bousonville

Arnold Mattheus

Egbert Terlinde

Franko Kueppers

Frank Rumpf

Felix Wissel

Hans-Jörg Kolbe

Werner Würtenberger

Peter Hostalka

Arnold Dr Mattheus

Josef Röse

Yutaka Ntt Intellectual Property Center Miyamoto

Akira Ntt Intellectual Property Center Hirano

Yoshiaki Ntt Intellectual Property Center Kisaka

A method for an improved and simplified operation and architecture of a broadband access network of a telecommunications network and/or for providing fixed mobile convergence (FMC) and/or fixed mobile interworking (FMI) access and functionality to a plurality of residential gateways being connected to the broadband access network includes: in a first step, a unique identifier information is transmitted, by the specific residential gateway, to the broadband access network; in a second step, the unique identifier information is used, by the broadband access network, to decide whether or not the broadband access network is able or configured to provide 5G network access to the specific residential gateway and/or whether the specific residential gateway is able or configured to receive or to accept or to process 5G network access; and in a third step, the FMC access gateway function node or instance is dynamically configured or generated.

Broadband access for 5G capable residential gateways

A system and method for Raman amplification of optical signals in a wavelength division multiplexing (WDM) optical transmission system includes transmitting optical signals within a transmission band via an optical waveguide between a transmitter and a receiver, Raman-amplifying the optical signals with at least one pump so as to distort an amplification profile of the Raman amplification within the transmission band, and rectifying the distorted amplification profile so as to compensate for the distortion.

Method for the raman amplification of optical signals and transmission system

A method for optical data transmission in a wavelength multiplexing system having at least two transmission channels of different wavelengths includes determining at least one value which is a measure of a physical property of an optical data transmission path of the wavelength multiplexing system; and automatically adjusting a transmission parameter of at least one of the transmission channels as a function of the determined at least one value.

Method and device for channel-adapted signal transmission in optical networks

A method for detecting and locating faults in an optical transmission path, and to an optical transmission system having such a functionality, is provided. By measuring the temporal change in the state of polarization SOP, external influences on a glass fiber cable of a long-haul transmission system, e.g., a WDM transmission system, may be detected. Such fault(s) may be localized with the aid of the relative arrival time of the polarization signal at both sides of a bidirectional transmission system.

Method for detecting and localizing faults in an optical transmission path, and optical transmission system

A method and device for reducing the distortion of optical pulses caused by the polarization mode dispersion in optical communication systems is provided. When an optical pulse having any polarization is transmitted through an optical communication system, which is optically anisotropic, at least in sections, the optical pulse may become distorted due to the different velocities of the various polarization components. This distortion of the optical pulses may reduces the maximum transmission rate of the system. A method is provided for functioning in response to the detected transmission quality of the communication system where a polarization-controlling device for setting the polarization of the optical pulse is driven in such a way that the transmission quality is maximized. An optical communication system, including an optical transmission medium, involves a device for determining the transmission quality of the communication system, a regulating device, and a polarization-controlling device. The output signal from the device for determining the transmission quality of the communication system may be applied to the regulating device, which drives the polarization-controlling device to change the polarization of the optical pulses in such a way that the transmission quality is optimized.

Reducing the distortion of optical pulses caused by polarization mode dispersion in optical communication systems

The present invention proposes a method whereby during a specified/specifiable observation period (T) , the polarization states of optical transmission system and/or the optical signals transmitted by the optical transmission system are changed by applying a targeted intervention in at least one position of the transmission line, and at a second position which is interposed at least one place downstream from the first position of the optical transmission line, a specified/specifiable signal characteristic (BER) is qualitatively measured and checked for adherence to a specified/specifiable threshold condition (BER) and the PMD-induced outage probability of the optical transmission system is calculated on the basis of the ratio between the length of that share of the time (T), during which the measured signal characteristic fails to meet the threshold condition (BER), to the length of the observation period (T).

Processes and devices for the determination of a PMD-induced outage probability of an optical transmission system

Growing community of inventors

Eppertshausen, Germany

Werner Weiershausen