Telcordia Technologies

About: Telcordia Technologies is a based out in . It is known for research contribution in the topics: Network packet & Node (networking). The organization has 3097 authors who have published 4737 publications receiving 237882 citations.

Multi-rate synchronous virtual circuit network for voice and data communications

Abstract: A transmission network for enabling communication between a multiplicity of user stations is disclosed. The network can handle a wide variety of traffic types ranging from the continuous transmission of batch data to the bursty transmission of voice and interactive data. The network comprises an array of switches which are connected by trunk groups. Communication between any pair of user stations is achieved by means of a virtual circuit which passes through one or more of the switches. Frames of data are synchronously transmitted between the switches. Variable bit rate capability is achieved by allocating different numbers of slots in each frame to different virtual circuits.

Chain-site versus plane-site Cu substitution in YBa2Cu3-xMxO7 (M=Co,Ni): Hall and thermopower studies.

Abstract: Substitution of Cu by Ni at Cu(2) (plane) sites in Y${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7}$ has a weak effect on the Hall constant, but turns the thermopower negative. In contrast, substitution at Cu(1) (chain) sites by Co decreases the Hall number exponentially. The suppression of ${T}_{c}$ is due to different mechanisms in the two cases. We discuss how doping affects the carrier density, and the evidence in favor of a filling factor of \textonehalf{} in the undoped system.

Method and system for real time cellular network configuration

Abstract: A method and system for automatically configuring the frequency allocation within a cellular system or network. The method requires the collection of measurements from different parts of a cellular network, generating statistics from these measurements, and combining these statistics with inventory, propagation and geographic data. The combined data is used as input to a frequency allocation algorithm. As a result, the allocation algorithm produces a frequency configuration set a quality measure of the configuration proposed and/or a set of recommendations that is fed back to the cellular base stations to re-allocate the frequency usage in a plurality of cells.

Method and apparatus for enabling and monitoring mobile communication across platforms

Abstract: A system and method for communicating across various communication platforms is disclosed. The system includes a mobility manager that includes a database that stores the alias of terminals on other platforms for addressing from a first platform. Through use of the disclosed system and method, communication across platforms is enabled while minimizing modifications needed to further the communication pathways.

Fabrication of arrays of GaAs optical bistable devices

Abstract: Arrays of fast optical bistable devices (OBD’) hold excellent promise in the implementation of parallel optical computation systems. The fabrication of an array of 9×9 μm pixels of OBD’s on a GaAs/AlGaAs molecular beam epitaxial layer is reported here. The pixels were defined by reactive ion etching in a freon, helium, and oxygen gas mixture. The array, consisting of over 100×100 devices, formed good quality, uniform interferometers, exhibiting a single fringe in transmitted light. Gate recovery times were reduced by eliminating the top AlGaAs window and by etching 9×9 μm pixels in an array. Uniform arrays of such high quality optical gates or bistable devices could handle thousands of parallel channels at a rate of several gigahertz per channel.